CN103828270A - Channel cablibration method, apparatus and base station based on antenna feed system - Google Patents
Channel cablibration method, apparatus and base station based on antenna feed system Download PDFInfo
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- CN103828270A CN103828270A CN201380000492.8A CN201380000492A CN103828270A CN 103828270 A CN103828270 A CN 103828270A CN 201380000492 A CN201380000492 A CN 201380000492A CN 103828270 A CN103828270 A CN 103828270A
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Abstract
The invention discloses a channel calibration method, an apparatus and a base station based on an antenna feed system and belongs to the technical field of communication. The method works in a way that the base station receives a referred detection signal sent by UE in a purlaity of channels of the antenna system; a second phase difference between channels is acquired by combination of a preset referred detection signal; a phase difference between the referred detection signal and the preset referred detection signal is got; and a first phase difference between channels is acquired according to the phase difference; static passive network phase cablibration quantity is thereby achieved, so channel calibration is conducted. The apppartus comprises a receiving module, a phase difference acquiring module, a first phase difference acquiring module, a second phase difference acquiring module, a static passive network phase cablibration quantity acquiring module and a channel cablibration module. The base station comprises a receiver, a processor and a controller. Via calibration of the phase between channels, effective compensation can be achieved for factors easily affected by outside world, so accurate BF and VAM can be conducted and wireless network transmission and coverage can be improved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of channel calibration method, device and base station based on antenna-feedback system.
Background technology
In the process being gradually improved at wireless network, in order to make antenna-feedback system can reach higher transmission rate and the covering power of Geng Gao, BF(Beam Forming, wave beam forming) and VAM(Virtual Atenna Mapping, virtual-antenna mapping) become the critical problem that must consider.And to carry out BF and VAM, just must calibrate the passage of antenna-feedback system.
For channel phases calibration, general calibration thinking: sendaisle end sends reference signal, loopback receives and detects through calibration branch road and obtains a channel vector, makes the channel vector phase place of each calibrated channel consistent by phase compensation.Be divided into two kinds of calibrating modes according to the path of transmitting loopback is unusual: 1, external calibration, loopback path comprises the passive part of active part to antenna inside, detects entering calibrated channel by the coupling circuit of standard; 2, internal calibration, loopback path only has active part, enters calibrated channel detect by standard coupling circuit.General inside and outside calibration can realize the requirement of up-downgoing reciprocity, can guarantee the benchmark of BF.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
The in the situation that of active internal calibration, although the calibrating mode of active channel can reach the object of up-downgoing reciprocity calibrate, but antenna is eated dishes without rice or wine but can not to reach phase difference between array and is alignd, be subject to the impact of external environment, device property etc. toward contact mainly due to the calibrate of passive part, as the elastic error of inaccurate, the joint of the phase displacement error of wireless network, feeder line cutting etc., cause carrying out accurate BF and VAM, affect covering and the transmission of wireless network.
Summary of the invention
In order to realize under the impact that is subject to external environment, device property etc., realize the object of interchannel calibration, the embodiment of the present invention provides a kind of channel calibration method, device and base station based on antenna-feedback system.Described technical scheme is as follows:
First aspect, provides a kind of channel calibration method based on antenna-feedback system, and described method comprises:
Base station receives the reference detectable signal that UE sends in multiple passages of antenna-feedback system;
Described base station, according to the reference detectable signal receiving in preset reference detectable signal and described multiple passage, obtains the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage;
According to described phase difference, obtain interchannel first-phase potential difference;
Correlation measurement, according to the reference detectable signal of preset reference detectable signal and described UE transmission, is carried out in described base station, obtains interchannel second-phase potential difference;
According to described first-phase potential difference and described second-phase potential difference, obtain static passive network phase alignment amount;
According to described static passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
In conjunction with first aspect, in the first possibility implementation of first aspect, described correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
In conjunction with the first possibility implementation of first aspect, in the second possibility implementation of first aspect, described coherent phase is calculated and is carried out on time domain or frequency domain.
In conjunction with first aspect, in the third of first aspect may implementation, described UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of described antenna-feedback system.
In conjunction with first aspect, in the 4th kind of possibility implementation of first aspect, described static passive network phase alignment amount equals correlation and measures the inter-channel phase difference of gained and the difference of internal calibration inter-channel phase difference.
Second aspect, provides a kind of calibrate device based on antenna-feedback system, and described device comprises:
Receiver module, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
Phase difference acquisition module, for the reference detectable signal receiving according to preset reference detectable signal and described multiple passage, obtains the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage;
First-phase potential difference acquisition module, for according to described phase difference, obtains interchannel first-phase potential difference;
Second-phase potential difference acquisition module, for according to the reference detectable signal of preset reference detectable signal and described UE transmission, carries out correlation measurement, obtains interchannel second-phase potential difference;
Static passive network phase alignment amount acquisition module, for according to described first-phase potential difference and described second-phase potential difference, obtains static passive network phase alignment amount;
Calibrate module, for calibrating multiple passages corresponding with the channel of current channel reciprocity.
In conjunction with second aspect, in the first possibility implementation of second aspect, described correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
In conjunction with the first possibility implementation of second aspect, in the second possibility implementation of second aspect, described coherent phase is calculated and is carried out on time domain or frequency domain.
In conjunction with second aspect, in the third of second aspect may implementation, described UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of described antenna-feedback system.
In conjunction with second aspect, in the 4th kind of possibility implementation of second aspect, described static passive network phase alignment amount equals correlation and measures the inter-channel phase difference of gained and the difference of internal calibration inter-channel phase difference.
The third aspect, provides a kind of base station, and described base station comprises: receiver, reflector, and memory and processor, described receiver, described reflector and described memory are connected with described processor respectively, and described memory stores has program code,
Described receiver, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
Described processor, be used for calling described program code, carry out following operation: according to the reference detectable signal receiving in preset reference detectable signal and described multiple passage, obtain the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage; According to described phase difference, obtain interchannel first-phase potential difference; According to the reference detectable signal of preset reference detectable signal and described UE transmission, carry out correlation measurement, obtain interchannel second-phase potential difference; According to described first-phase potential difference and described second-phase potential difference, obtain static passive network phase alignment amount; According to described static passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The reference detectable signal sending by receiving UE, the reference detectable signal receiving and preset reference detectable signal are carried out to matching ratio, to obtain both phase differences, thereby obtain interchannel first-phase potential difference and carry out the interchannel second-phase potential difference that correlation measurement obtains, and then obtain static passive network phase alignment amount, to calibrating through multiple passages of eating dishes without rice or wine, to make the phase displacement error of wireless network, it is inaccurate that feeder line cuts, the elastic error of joint etc. obtains effective compensation, interchannel phase difference is consistent, be conducive to the carrying out of BF and VAM, improve transmission and the covering of wireless network.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of channel calibration method flow chart based on antenna-feedback system that the embodiment of the present invention provides;
Fig. 2 is the channel calibration method flow chart of the another kind that provides of the embodiment of the present invention based on antenna-feedback system;
Fig. 3 is a kind of calibrate apparatus structure schematic diagram based on antenna-feedback system that the embodiment of the present invention provides;
Fig. 4 is a kind of architecture of base station schematic diagram that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 is a kind of channel calibration method flow chart based on antenna-feedback system that the embodiment of the present invention provides.Referring to Fig. 1, described method comprises:
101, base station receives UE(User Equipment, subscriber equipment in multiple passages of antenna-feedback system) send reference detectable signal;
102, this base station, according to the reference detectable signal receiving in preset reference detectable signal and the plurality of passage, obtains the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage;
103,, according to this phase difference, obtain interchannel first-phase potential difference;
It should be noted that, this first-phase potential difference can be the mean value of the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage, also can be the phase difference between reference detectable signal and this preset reference detectable signal that in the plurality of passage, any one passage is corresponding, the embodiment of the present invention limit this.
104, correlation measurement, according to the reference detectable signal of preset reference detectable signal and this UE transmission, is carried out in this base station, obtains interchannel second-phase potential difference;
105,, according to this first-phase potential difference and this second-phase potential difference, obtain static passive network phase alignment amount;
106, according to this static state passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
Wherein, the multiple passages corresponding with the channel of current channel reciprocity being calibrated, is according to this static state passive network phase alignment amount, to the channel of current channel reciprocity in signal carry out that phase place is counter mends.
It should be noted that, if current channel is up channel, should be down channel with the channel of this channel reciprocity, if current channel is down channel, should be up channel with the channel of this channel reciprocity, the embodiment of the present invention does not limit this.
The method that the embodiment of the present invention provides, the reference detectable signal sending by receiving UE, the reference detectable signal receiving and preset reference detectable signal are carried out to matching ratio, to obtain both phase differences, thereby obtain interchannel first-phase potential difference and carry out the interchannel second-phase potential difference that correlation measurement obtains, and then obtain static passive network phase alignment amount, to calibrating through multiple passages of eating dishes without rice or wine, to make the phase displacement error of wireless network, it is inaccurate that feeder line cuts, the elastic error of joint etc. obtains effective compensation, interchannel phase difference is consistent, be conducive to the carrying out of BF and VAM, improve transmission and the covering of wireless network.
Fig. 2 is the channel calibration method flow chart of the another kind that provides of the embodiment of the present invention based on antenna-feedback system.Referring to Fig. 2, described method flow comprises:
201: base station receives by multiple passages of antenna-feedback system the reference detectable signal that UE sends;
In embodiments of the present invention, UE sends with reference to detectable signal to base station, and this is known to base station with reference to detectable signal.When base station receives by multiple passages of antenna-feedback system the reference detectable signal that UE sends, the received reference detectable signal in base station is the signal through such environmental effects such as channel disturbance, and variation all may occur phase place etc.
In embodiments of the present invention, receiving by up channel the reference detectable signal that UE sends take base station describes as example.
Preferably, measure the impact of the signal to noise ratio etc. that can not be subject to user's orientation and the received signal of user in order to ensure source calibration and correlation, this UE can choose SINR(Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) be greater than predetermined threshold value and be positioned at the UE of the normal direction of the directional diagram of this antenna-feedback system.
202, this base station, according to the reference detectable signal receiving in preset reference detectable signal and the plurality of passage, obtains the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage;
In embodiments of the present invention, because the meeting such as attribute and structure of passage in channel has a certain impact to the signal tool of transmission therein, make the phase place of signal and the signal phase of UE transmission of this received process transmission of base station inconsistent, thereby generation phase difference, when receive with reference to detectable signal by first passage, mate with preset reference detectable signal, obtain first passage and send out number phase difference of generation of collecting mail, when receive with reference to detectable signal by second channel, mate with preset reference detectable signal, obtain second channel and send out number phase difference of generation of collecting mail, obtain the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage with this.
203, according to this phase difference, obtain interchannel first-phase potential difference, carry out 206;
In embodiments of the present invention, described first-phase potential difference is: first passage is sent out the collect mail phase difference, the second channel that number produce and send out the mean value of the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the collect mail phase difference that number produces and follow-up multiple passages, also can be that first passage is sent out number phase difference of generation of collecting mail, or phase difference between the reference detectable signal that in the plurality of passage, any one passage is corresponding and this preset reference detectable signal, the embodiment of the present invention does not limit this.
This step 201-step 203 is active calibration process, and this process can be by RRU(Radio Remote Unit, Remote Radio Unit) periodically carry out.
204, determine the residing polarized state of base station up channel;
205,, according to definite polarized state, correlation measurement, according to the reference detectable signal of preset reference detectable signal and described UE transmission, is carried out in this base station, obtains interchannel second-phase potential difference;
In embodiments of the present invention, determining after polarized state, according to the different polarized states of channel, this correlation is measured can following situation:
(1) when channel is during in the different polarized state of same column, this step 205 can comprise the following steps: utilize upstream multi-antenna receive channel, calculate the coherent phase between single-row cross polarization channel vector (h1, h2), angle_Crs=angle (h1)-angle (h2); Wherein, angle_Crs represents coherent phase, and angle (h1) and angle (h2) represent the phase place of row cross polarization a period of time channel vector; Alternatively, the calculating of this coherent phase can be at time domain or frequency domain to preferably strong LOS(Line-of-sight of certain UE(, sighting distance)) carry out.
Further, in the time that the calculating of coherent phase is positioned at time domain, choosing one or more effective diameters that energy is the highest calculates, second-phase potential difference using the mean value of the phase place of multipath as between each passage to be calibrated and reference channel, wherein effective diameter is the transmission path that point-to-point transmission must be able to be looked at straight, does not block centre transmitting and receiving on antenna.In the time that the calculating of coherent phase is positioned at frequency domain, calculate each subcarrier after passage with the phase difference that sends the subcarrier before subcarrier, using the mean value of the phase difference of the plurality of subcarrier as interchannel second-phase potential difference.
(2) in another embodiment providing in the embodiment of the present invention, when channel is during in the different polarized state of same column, this step 205 can comprise the following steps: utilize upstream multi-antenna receive channel, calculate the coherent phase between single-row cross polarization channel vector (h1, h2), angle_Crs=angle (h1*h2 '); Wherein, angle_Crs represents coherent phase, h1, and h2 represents the measurement vector of each channel; Alternatively, the calculating of this coherent phase can be at time domain or frequency domain to preferably strong LOS of certain UE() carry out.
Further, in the time that the calculating of coherent phase is positioned at time domain, chooses one or more effective diameters that energy is the highest and calculate, the second-phase potential difference using the mean value of the phase place of multipath as between each passage to be calibrated and reference channel.In the time that the calculating of coherent phase is positioned at frequency domain, calculate each subcarrier after passage with the phase difference that sends the subcarrier before subcarrier, using the mean value of the phase difference of the plurality of subcarrier as interchannel second-phase potential difference.
(3) in the another embodiment providing in the embodiment of the present invention, when channel is during in same polarization state, this step 205 can comprise the following steps: utilize upstream multi-antenna receive channel, calculate same polarization channel vector (h1, h2, h3 ...) between coherent phase
angle_Crs1=angle(h1*h2’)；
angle_Crs2=angle(h1*h3’)；
angle_Crs3=angle(h1*h4’)；…，
Wherein, angle_Crs1, angle_Crs2, angle_Crs3 etc. represent coherent phase, phase place corresponding to coherence existing between the expression same polarization a period of time such as angle (h1*h2 '), angle (h1*h3 '), angle (h1*h4 '); Alternatively, the calculating of this coherent phase can must be normal direction and the UE of strong LOS or the UE far away apart from antenna to this UE of certain UE(at time domain or frequency domain) carry out.
Further, in the time that the calculating of coherent phase is positioned at time domain, chooses one or more effective diameters that energy is the highest and calculate, the second-phase potential difference using the mean value of the phase place of multipath as between each passage to be calibrated and reference channel.In the time that the calculating of coherent phase is positioned at frequency domain, calculate each subcarrier after passage with the phase difference that sends the subcarrier before subcarrier, using the mean value of the phase difference of the plurality of subcarrier as interchannel second-phase potential difference.
(4) in an embodiment again who provides in the embodiment of the present invention, when channel is during in same polarization state, this step 205 can comprise the following steps: utilize upstream multi-antenna receive channel, calculate same polarization channel (h1, h2, h3, ) between coherent phase, angle_Crs1=angle (h1)-angle (h2), angle_Crs2=angle (h1)-angle (h3), angle_Crs3=angle (h1)-angle (h4), angle_Crs represents coherent phase, angle (h1), angle (h2), angle (h3), angle (h4) etc. represent the phase place of single-row cross polarization a period of time channel vector, necessarily, the calculating of this coherent phase can must be normal direction and the UE of strong LOS or the UE far away apart from antenna to this UE of certain UE(at time domain or frequency domain) carry out.
Further, in the time that the calculating of coherent phase is positioned at time domain, chooses one or more effective diameters that energy is the highest and calculate, the second-phase potential difference using the mean value of the phase place of multipath as between each passage to be calibrated and reference channel.In the time that the calculating of coherent phase is positioned at frequency domain, calculate each subcarrier after passage with the phase difference that sends the subcarrier before subcarrier, using the mean value of this phase difference as interchannel second-phase potential difference.
206, according to the interchannel second-phase potential difference of this interchannel first-phase potential difference and this correlation measurement gained, obtain static passive network phase alignment amount;
In the embodiment of the present invention, this static state passive network phase alignment amount equals correlation and measures this interchannel second-phase potential difference of gained and the difference of this interchannel first-phase potential difference.
Based on 205 example, in the time that channel is carried out to the different Polarimetric Calibration of same column, calculate coherent phase by 205, and calculate the mean value on time domain or frequency domain, this value is measured the interchannel second-phase potential difference of gained as correlation, and calculate interchannel first-phase potential difference by 203, calculate by first-phase potential difference and second-phase potential difference are done to difference, obtain static passive network phase alignment amount.
In the time that channel is carried out to the different Polarimetric Calibration of same column, calculate coherent phase by 205, and calculate the mean value on time domain or frequency domain, this value is measured the interchannel second-phase potential difference of gained as correlation, and calculate interchannel first-phase potential difference by 203, by first-phase potential difference and second-phase potential difference are done to difference calculating, obtain static passive network phase alignment amount.
207, according to this static state passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
In embodiments of the present invention, according to obtaining static passive network phase alignment amount by the received reference detectable signal of up channel, utilize this static state passive network phase alignment amount down channel to be carried out to phase place is counter mends.
It should be noted that, this calibration program is equally applicable to the calibration between traditional four-way antenna-feedback system and the same polarization of eight passage antenna-feedback systems.
The method that the embodiment of the present invention provides, the reference detectable signal sending by receiving UE, the reference detectable signal receiving is mated with preset reference detectable signal, to obtain both phase differences, thereby obtain interchannel first-phase potential difference and carry out the interchannel second-phase potential difference that correlation measurement obtains, and then obtain static passive network phase alignment amount, to calibrating through multiple passages of eating dishes without rice or wine, to make the phase displacement error of wireless network, it is inaccurate that feeder line cuts, the elastic error of joint etc. obtains effective compensation, interchannel phase difference is consistent, be conducive to the carrying out of BF and VAM, improve transmission and the covering of wireless network.Further, by utilization receive with reference to correlative between detectable signal and preset reference detectable signal measure and this accessed calibrator quantity of first-phase potential difference affected by environment and temperature less, and substantially constant, can be used as the static parameter for calibrating.
Fig. 3 is a kind of calibrate apparatus structure schematic diagram based on antenna-feedback system that the embodiment of the present invention provides.Referring to Fig. 3, described device comprises:
Receiver module 301, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
Phase difference acquisition module 302, for the reference detectable signal receiving according to preset reference detectable signal and the plurality of passage, obtains the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage;
First-phase potential difference acquisition module 303, for according to this phase difference, obtains interchannel first-phase potential difference;
Second-phase potential difference acquisition module 304, for according to the reference detectable signal of preset reference detectable signal and this UE transmission, carries out correlation measurement, obtains interchannel second-phase potential difference;
Static passive network phase alignment amount acquisition module 305, for according to this first-phase potential difference and this second-phase potential difference, obtains static passive network phase alignment amount;
Calibrate module 306, for calibrating multiple passages corresponding with the channel of current channel reciprocity.
Alternatively, this correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
Alternatively, this coherent phase is calculated and is carried out on time domain or frequency domain.
Alternatively, this UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of this antenna-feedback system.
Alternatively, this static state passive network phase alignment amount equals this interchannel second-phase potential difference of correlation measurement gained and the difference of this interchannel first-phase potential difference.
In sum, the device that the embodiment of the present invention provides, the reference detectable signal sending by receiving UE, the reference detectable signal receiving and preset reference detectable signal are carried out to matching ratio, to obtain both phase differences, thereby obtain interchannel first-phase potential difference and carry out the interchannel second-phase potential difference that correlation measurement obtains, and then obtain static passive network phase alignment amount, to calibrating through multiple passages of eating dishes without rice or wine, to make the phase displacement error of wireless network, it is inaccurate that feeder line cuts, the elastic error of joint etc. obtains effective compensation, interchannel phase difference is consistent, be conducive to the carrying out of BF and VAM, improve transmission and the covering of wireless network.
It should be noted that: the calibrate device based on antenna-feedback system that above-described embodiment provides is in the time of the calibrate carrying out based on antenna-feedback system, only be illustrated with the division of above-mentioned each functional module, in practical application, can above-mentioned functions be distributed and completed by different functional modules as required, be divided into different functional modules by the internal structure of base station, to complete all or part of function described above.In addition, the calibrate device based on antenna-feedback system that above-described embodiment provides belongs to same design with the channel calibration method embodiment based on antenna-feedback system, and its specific implementation process refers to embodiment of the method, repeats no more here.
Fig. 4 is the structural representation of a kind of base station of providing of the embodiment of the present invention.Referring to Fig. 4, described device comprises: receiver 401, reflector 402, and memory 403 and processor 404, this receiver 401, this reflector 402 and this memory 403 are connected with this processor 404 respectively, this memory 403 code that has program stored therein,
This receiver 401, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
This processor 404, be used for calling described program code, carry out following operation: according to the reference detectable signal receiving in preset reference detectable signal and the plurality of passage, obtain the phase difference between reference detectable signal and this preset reference detectable signal corresponding in the plurality of passage; According to this phase difference, obtain interchannel first-phase potential difference; According to the reference detectable signal of preset reference detectable signal and this UE transmission, carry out correlation measurement, obtain interchannel second-phase potential difference; According to this first-phase potential difference and this second-phase potential difference, obtain static passive network phase alignment amount; According to this static state passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
Alternatively, this correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
Alternatively, this coherent phase is calculated and is carried out on time domain or frequency domain.
Alternatively, this UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of this antenna-feedback system.
Alternatively, this static state passive network phase alignment amount equals this interchannel second-phase potential difference of correlation measurement gained and the difference of this interchannel first-phase potential difference.
One of ordinary skill in the art will appreciate that all or part of step that realizes above-described embodiment can complete by hardware, also can carry out the hardware that instruction is relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. the channel calibration method based on antenna-feedback system, is characterized in that, described method comprises:
Base station receives the reference detectable signal that user equipment (UE) sends in multiple passages of antenna-feedback system;
Described base station, according to the reference detectable signal receiving in preset reference detectable signal and described multiple passage, obtains the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage;
According to described phase difference, obtain interchannel first-phase potential difference;
Correlation measurement, according to the reference detectable signal of preset reference detectable signal and described UE transmission, is carried out in described base station, obtains interchannel second-phase potential difference;
According to described first-phase potential difference and described second-phase potential difference, obtain static passive network phase alignment amount;
According to described static passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
2. method according to claim 1, is characterized in that, described correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
3. method according to claim 2, is characterized in that, described coherent phase is calculated and carried out on time domain or frequency domain.
4. method according to claim 1, is characterized in that, described UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of described antenna-feedback system.
5. method according to claim 1, is characterized in that, described static passive network phase alignment amount equals correlation and measures the interchannel phase difference of gained and the difference of internal calibration inter-channel phase difference.
6. the calibrate device based on antenna-feedback system, is characterized in that, described device comprises:
Receiver module, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
Phase difference acquisition module, for the reference detectable signal receiving according to preset reference detectable signal and described multiple passage, obtains the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage;
First-phase potential difference acquisition module, for according to described phase difference, obtains interchannel first-phase potential difference;
Second-phase potential difference acquisition module, for according to the reference detectable signal of preset reference detectable signal and described UE transmission, carries out correlation measurement, obtains interchannel second-phase potential difference;
Static passive network phase alignment amount module, for according to described first-phase potential difference and described second-phase potential difference, obtains static passive network phase alignment amount;
Calibrate module, for calibrating multiple passages corresponding with the channel of current channel reciprocity.
7. device according to claim 6, is characterized in that, described correlation measurement comprises that in the different Polarimetric Calibration of same column, the coherent phase between polarisation channel is calculated; Or the coherent phase in same polarization calibration between polarisation channel is calculated.
8. device according to claim 7, is characterized in that, described coherent phase is calculated and carried out on time domain or frequency domain.
9. device according to claim 6, is characterized in that, described UE is that Signal to Interference plus Noise Ratio SINR is greater than predetermined threshold value and is positioned at the UE of the normal direction of the directional diagram of described antenna-feedback system.
10. device according to claim 6, is characterized in that, described static passive network phase alignment amount equals correlation and measures the described interchannel phase difference of gained and the difference of internal calibration inter-channel phase difference.
11. 1 kinds of base stations, is characterized in that, described base station comprises: receiver, reflector, and memory and processor, described receiver, described reflector and described memory are connected with described processor respectively, and described memory stores has program code,
Described receiver, the reference detectable signal sending for receive UE at multiple passages of antenna-feedback system;
Described processor, be used for calling described program code, carry out following operation: according to the reference detectable signal receiving in preset reference detectable signal and described multiple passage, obtain the phase difference between reference detectable signal and described preset reference detectable signal corresponding in described multiple passage; According to described phase difference, obtain interchannel first-phase potential difference; According to the reference detectable signal of preset reference detectable signal and described UE transmission, carry out correlation measurement, obtain interchannel second-phase potential difference; According to described first-phase potential difference and described second-phase potential difference, obtain static passive network phase alignment amount; According to described static passive network phase alignment amount, the multiple passages corresponding with the channel of current channel reciprocity are calibrated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/078187 WO2014205740A1 (en) | 2013-06-27 | 2013-06-27 | Method and device for calibrating channel based on antenna feed system, and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103828270A true CN103828270A (en) | 2014-05-28 |
| CN103828270B CN103828270B (en) | 2015-11-25 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033984A (en) * | 2015-03-11 | 2016-10-19 | 中兴通讯股份有限公司 | Methods and systems for calibration of downlink channel and uplink channel of intelligent antenna |
| WO2018176201A1 (en) * | 2017-03-27 | 2018-10-04 | 华为技术有限公司 | Radio frequency channel calibration apparatus and method |
| WO2019127493A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Device and method for correcting deviation between multiple transmission channels |
| CN110572191A (en) * | 2018-05-09 | 2019-12-13 | 是德科技股份有限公司 | Active antenna system transceiver near field test system and method |
| CN110831018A (en) * | 2019-11-14 | 2020-02-21 | 中国联合网络通信集团有限公司 | Detection method, equipment and storage medium for LTE (Long term evolution) cell antenna feeder system |
| CN112711843A (en) * | 2020-12-23 | 2021-04-27 | 牟晶 | Civil aviation antenna simulation and management method |
| CN112865844A (en) * | 2019-11-27 | 2021-05-28 | 大唐移动通信设备有限公司 | Channel calibration method and device thereof |
| WO2022012600A1 (en) * | 2020-07-17 | 2022-01-20 | 华为技术有限公司 | Initial phase correction method and device for transmitting channel |
| WO2022267853A1 (en) * | 2021-06-22 | 2022-12-29 | 华为技术有限公司 | Channel phase correction method and related apparatus |
| WO2023040796A1 (en) * | 2021-09-17 | 2023-03-23 | 华为技术有限公司 | Channel phase deviation prediction method and related device |
Families Citing this family (1)
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| CN104579513B (en) * | 2015-01-29 | 2017-01-18 | 武汉虹旭信息技术有限责任公司 | Terminal frequency deviation correcting method |
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| CN106033984A (en) * | 2015-03-11 | 2016-10-19 | 中兴通讯股份有限公司 | Methods and systems for calibration of downlink channel and uplink channel of intelligent antenna |
| CN106033984B (en) * | 2015-03-11 | 2020-12-18 | 中兴通讯股份有限公司 | Method and system for calibrating downlink channel and uplink channel of intelligent antenna |
| WO2018176201A1 (en) * | 2017-03-27 | 2018-10-04 | 华为技术有限公司 | Radio frequency channel calibration apparatus and method |
| WO2019127493A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Device and method for correcting deviation between multiple transmission channels |
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| CN110572191B (en) * | 2018-05-09 | 2022-06-07 | 是德科技股份有限公司 | Active antenna system transceiver near field test system and method |
| CN110572191A (en) * | 2018-05-09 | 2019-12-13 | 是德科技股份有限公司 | Active antenna system transceiver near field test system and method |
| CN110831018A (en) * | 2019-11-14 | 2020-02-21 | 中国联合网络通信集团有限公司 | Detection method, equipment and storage medium for LTE (Long term evolution) cell antenna feeder system |
| CN112865844A (en) * | 2019-11-27 | 2021-05-28 | 大唐移动通信设备有限公司 | Channel calibration method and device thereof |
| WO2022012600A1 (en) * | 2020-07-17 | 2022-01-20 | 华为技术有限公司 | Initial phase correction method and device for transmitting channel |
| CN112711843A (en) * | 2020-12-23 | 2021-04-27 | 牟晶 | Civil aviation antenna simulation and management method |
| WO2022267853A1 (en) * | 2021-06-22 | 2022-12-29 | 华为技术有限公司 | Channel phase correction method and related apparatus |
| WO2023040796A1 (en) * | 2021-09-17 | 2023-03-23 | 华为技术有限公司 | Channel phase deviation prediction method and related device |
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| WO2014205740A1 (en) | 2014-12-31 |
| CN103828270B (en) | 2015-11-25 |
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