CN102291189A - Antenna calibration method and device - Google Patents

Antenna calibration method and device Download PDF

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Publication number
CN102291189A
CN102291189A CN2011102313115A CN201110231311A CN102291189A CN 102291189 A CN102291189 A CN 102291189A CN 2011102313115 A CN2011102313115 A CN 2011102313115A CN 201110231311 A CN201110231311 A CN 201110231311A CN 102291189 A CN102291189 A CN 102291189A
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China
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terminal equipment
calibration
base station
pilot tone
sub
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CN2011102313115A
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CN102291189B (en
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高秋彬
彭莹
孙韶辉
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201110231311.5A priority Critical patent/CN102291189B/en
Publication of CN102291189A publication Critical patent/CN102291189A/en
Priority to PCT/CN2012/079663 priority patent/WO2013023535A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses an antenna calibration method and device. The technical scheme provided by the embodiment of the invention is as follows: a base station sends calibration pilot frequency to a terminal device, thus the terminal device performs channel measurement and information feedback of antenna calibration according to the calibration pilot frequency; and the terminal device performs antenna calibration cooperating with the base station according to the pilot frequency information which accords with multi-antenna occasions through the treatment, thus the antenna calibration can be realized accurately under the condition of no exact uplink and downlink reciprocity.

Description

Antenna calibration method and equipment
Technical field
The present invention relates to communication technical field, particularly a kind of antenna calibration method and equipment.
Background technology
MIMO(Multiple-Input Multiple-Output, multiple-input and multiple-output) system refers to all be equipped with at transmitting terminal and receiving terminal the system of many antennas.Mimo system has increased the processing in spatial domain on the basis that traditional time-frequency is handled, can further obtain ARRAY PROCESSING gain and diversity gain.In the mimo system, if transmitter can be known channel information in some way, just can be optimized sending signal, to improve the quality of reception and reduction requirement to the receiver complexity according to the characteristic of channel.Linear predictive coding/wave beam forming technology is exactly wherein a kind of optimization method, is the antagonism fading channel, reduces error probability, improves the effective means of systematic function.
In many antennas linear predictive coding/wave beam forming transmission technology, the base station is to UE(User Equipment, subscriber equipment, i.e. terminal equipment) channel information be a key factor that influences systematic function.FDD(Frequency Division Duplexing, Frequency Division Duplexing (FDD)) in the system, UE gives the base station by up channel with the feedback of channel information of estimating to obtain, and has taken a large amount of uplink channel resources, and can introduce quantization error etc.At TDD(Time Division Duplexing, time division duplex) in the system, the signal of uplink and downlink sends on identical frequency range, so the reciprocity of up-downgoing channel is set up.
So-called reciprocity is meant that up channel is identical with down channel.Utilize the up-downgoing channel reciprocity to estimate up channel, thereby obtain descending channel information, saved a large amount of feedback overheads by the upward signal that UE sends.
The reciprocity of channel is set up the physical channel of spatial transmission.Signal will be transported to antenna through radiating circuit after Base-Band Processing is finished, and also will be transported to base band through receiving circuit from the signal that antenna receives.In general, radiating circuit is two different circuit with receiving circuit, and therefore time delay and the amplitude gain of being introduced by radiating circuit and receiving circuit and inequality that is to say that transmission circuit does not match.Not matching of radiating circuit and receiving circuit causes the not strict establishment of up-downgoing channel reciprocity.
If the up-downgoing circuit does not match, especially time delay not simultaneously, the signal that then can't guarantee each antenna is with superimposed, makes the signal to noise ratio of received signal reduce, and causes mis-behave.
It is a kind of that to offset the do not match method of the influence that causes of up-downgoing circuit be to carry out antenna calibration: the information that reports according to UE with and/or base station measurement to information calculations go out calibration factor, the channel that is estimated by upward signal is compensated adjustment, perhaps compensate adjustment to sent data.
On the other hand, (Coordinated Multi-Point, CoMP) technology is the cooperation between a plurality of transmission points that separate on the geographical position in the multipoint cooperative transmission.A plurality of transmission points of the base station that a plurality of transmission points are different districts or the separation of inside, a sub-district.The multipoint cooperative transmission technology is divided descending cooperation transmission and up is united reception.Descending multipoint cooperative transmission technology scheme mainly is divided into two classes: cooperative scheduling and unite transmission.
Cooperative scheduling is the coordination by the time between the sub-district, frequency and space resources, avoids or reduces each other interference.The interference of minizone is the principal element of restriction cell edge UE performance, so cooperative scheduling can improve the performance of cell edge UE by reducing the interference of minizone.As shown in Figure 1, by the cooperative scheduling of 3 sub-districts, three UE that may the phase mutual interference have dispatched (with the different resource of different color showings) on the mutually orthogonal resource, have effectively avoided the interference between the sub-district.
A plurality of sub-districts send data to UE simultaneously in the associating delivery plan, to strengthen the UE received signal.As shown in Figure 2, three sub-districts send data to a UE on identical resource, and UE receives the signal of a plurality of sub-districts simultaneously.On the one hand, stack can promote the signal quality that UE receives from the useful signal of a plurality of sub-districts, on the other hand, has reduced the interference that UE is subjected to, thereby improves systematic function.
Be similar to single-point (single sub-district) multi-antenna transmitting transmission scheme, whether the multipoint cooperative transmission technology can effectively implement to depend on the obtainable channel condition information of transmitting terminal.After transmitting terminal obtains desirable channel condition information, can improve signal quality and suppress user's interference with linear predictive coding (wave beam forming) technology.Transmitting terminal can obtain channel condition information by the feedback of terminal, but feedback channel can take valuable uplink spectrum resource, thereby reduces up spectrum efficiency.This point is particularly evident in the multipoint cooperative transmission, and each sub-district (transmission point) that participates in cooperation transmission all needs to acquire the channel condition information of terminal, so its feedback overhead is linear increasing along with the number of cooperation point.Consider concrete transmission plan, also may be higher to the channel condition information permissible accuracy, this just means and takies more uplink bandwidth resource.This very nervous uplink transmission resource seems awkward this moment more.Simultaneously, because the capacity of up channel is limited, inevitably there is quantization error in the channel condition information of feedback.Quantization error then can reduce the multipoint cooperative transmission performances.Utilizing channel reciprocity to obtain channel condition information in the TDD system and can not bring extra feedback overhead, and do not have the quantization error of introducing because of feedback, is very competitive solution.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
Utilize the CoMP scheme of channel reciprocity to be faced with the requirement of antenna calibration equally, the air interface calibration that foregoing terminal participates in needs the pilot signal of up-downgoing.
Uplink pilot signal SRS(Sounding Reference Signal, detection reference signal) get final product.And down-bound pilot frequency signal has CSI-RS(Channel State Information Reference Signal, channel state information reference signals), CRS(Cell-specific Reference Signal, cell special reference), DMRS(Demodulation Reference Signal, demodulated reference signal) and PRS(Positioning Reference Signals, location reference signals) etc. can select, but, DM-RS is not that full bandwidth sends, and live through precoding, be not suitable for calibration, CRS sends at full bandwidth, does not have precoding, can be used for calibration, but the trend of considering standard evolution is the effect of CRS of weakening gradually, and in addition, CRS might be the virtualized result of antenna, therefore also be not suitable for calibrating with CRS, the frequency domain density of CSI-RS is lower, is difficult to reach the required precision of channel estimation of calibration, and the density of PRS is enough high, but do not distinguish many antenna ports, be not suitable for calibration measurement.
Thus, as can be seen, under the multipoint cooperative transmitting scene, prior art does not have suitable solution for antenna calibration.
Summary of the invention
The embodiment of the invention provides a kind of antenna calibration method and equipment, solves in the existing technical scheme, not under the situation of strict establishment, can not accurately realize the problem of antenna calibration in the up-downgoing reciprocity.
For achieving the above object, the embodiment of the invention provides a kind of antenna calibration method on the one hand, may further comprise the steps at least:
The base station sends the calibration pilot tone to terminal equipment;
Described base station receives the calibration parameter that described terminal equipment returns, and described calibration parameter is determined according to the down channel measurement result in the corresponding scope of described calibration pilot tone by described terminal equipment;
Calibration factor is determined according to the uplink pilot signal of described calibration parameter and the transmission of described terminal equipment in described base station, and carries out antenna calibration according to described calibration factor.
On the other hand, the embodiment of the invention also provides a kind of base station, comprises at least:
Sending module is used for sending the calibration pilot tone to terminal equipment;
Receiver module is used to receive the calibration parameter that described terminal equipment returns, and described calibration parameter is determined according to the down channel measurement result in the corresponding scope of calibration pilot tone that described sending module sent by described terminal equipment;
Determination module is used for determining calibration factor according to the uplink pilot signal that the received calibration parameter of described receiver module and described terminal equipment send, and carries out antenna calibration according to described calibration factor.
On the other hand, the embodiment of the invention also provides a kind of antenna calibration method, may further comprise the steps at least:
Terminal equipment receives the calibration pilot tone that the base station sends;
Described terminal equipment is measured down channel according to described calibration pilot tone, and determines calibration parameter according to corresponding measurement result;
Described terminal equipment sends described calibration parameter and uplink pilot signal to described base station, so that corresponding calibration factor is determined in described base station, and carries out antenna calibration according to calibration factor.
On the other hand, the embodiment of the invention also provides a kind of terminal equipment, comprises at least:
Receiver module is used to receive the calibration pilot tone that the base station sends;
Determination module is used for according to the received calibration pilot tone of described receiver module down channel being measured, and determines calibration parameter according to corresponding measurement result;
Sending module is used for sending described calibration parameter and uplink pilot signal to described base station, so that corresponding calibration factor is determined in described base station, and carries out antenna calibration according to calibration factor.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
By using the technical scheme of the embodiment of the invention, send the calibration pilot tone by the base station to terminal equipment, so that terminal equipment carries out the channel measurement and the feedback information of antenna calibration according to this calibration pilot tone, by such processing, make the terminal equipment can be according to the pilot signal that meets many antennas scene needs, cooperate the base station to carry out antenna calibration, even not under the situation of strict establishment, also can realize antenna calibration accurately in the up-downgoing reciprocity.
Description of drawings
Fig. 1 is the scene schematic diagram of cooperative scheduling scheme of the prior art;
Fig. 2 is the enforcement scene schematic diagram of associating delivery plan of the prior art;
Fig. 3 is the schematic flow sheet of a kind of antenna calibration method that the embodiment of the invention proposed;
Fig. 4 is the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 5 is a kind of schematic diagram of calibrating pilot tone that the embodiment of the invention proposed;
Fig. 6 is the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 7 is the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 8 is the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 9 is the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Figure 10 is the structural representation of a kind of base station of embodiment of the invention proposition;
Figure 11 is the structural representation of a kind of terminal equipment of embodiment of the invention proposition.
Embodiment
As stated in the Background Art, multi-antenna technology has become one of key technology of next generation wireless communication system, and the linear predictive coding in the multi-antenna technology/wave beam forming technology is the antagonism fading channel, reduces error probability, improves the effective means of systematic function.
The TDD system utilizes the reciprocity of up-downgoing channel, and the UE that estimates according to the base station can obtain the descending channel information of base station to UE to the uplink channel information of base station, thereby calculates pre-coding matrix/beam shape-endowing weight value.Yet, the not strict establishment of up-downgoing reciprocity in the real system, this has influenced realization accurate between antenna.
In order to overcome such defective, the embodiment of the invention has proposed a kind of antenna calibration method, carry out corresponding channel measurement and feedback information by terminal equipment according to the calibration pilot tone of the special use of base station transmission, the base station is carried out antenna calibration in view of the above then, thus, guaranteed the smooth realization of antenna calibration under many antennas scene.
As shown in Figure 3, be the schematic flow sheet of a kind of antenna calibration method that the embodiment of the invention proposed, this method specifically may further comprise the steps:
Step S301, base station send the calibration pilot tone to terminal equipment.
Before this step, also comprise the selection course of the terminal equipment that participates in calibration, specify as follows:
At first, the ability information of self that described base station receives that described terminal equipment reports, certainly, in the processing procedure of reality, the ability information that the base station can receive a plurality of terminal equipments reports, and participates in the terminal equipment of calibration according to these Information Selection.
Ability information when described base station according to each terminal equipment that receives, when determining that described terminal equipment participates in calibration, the base station confirms that to the terminal equipment transmission of selected participation calibration described terminal equipment participates in the notification message of calibration.
On the other hand, the calibration pilot tone that is sent in order to make terminal equipment receive the base station smoothly, before the base station sent the calibration pilot tone, the base station can be notified the positional information of terminal equipment calibration pilot tone in the following manner:
Mode one, described base station send to described terminal equipment with pairing frequency domain information of described calibration pilot tone and/or sub-frame information.
In the application scenarios of reality, for this kind mode, the pairing frequency domain information of calibration pilot tone can be semi-static by high-level signaling by the base station, or dynamically described terminal equipment is configured by physical layer control signaling.
The pairing sub-frame information of calibration pilot tone then can be semi-static by high-level signaling by the base station, or by physical layer control signaling dynamically to described terminal equipment configuration, the content of the concrete sub-frame information that is disposed can be corresponding cycle and sub-frame offset.
Mode two, described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information.
In the application scenarios of reality, for this kind mode, the pairing frequency domain information of calibration pilot tone can be the information of the fixedly frequency domain scope at the direct calibration pilot tone place of making an appointment in described base station and described terminal equipment.
The pairing sub-frame information of calibration pilot tone then can be to realize by make an appointment in described base station and described terminal equipment cycle and sub-frame offset, and base station and terminal equipment can be determined the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset.
Need further be pointed out that, no matter adopt which kind of above-mentioned mode, frequency domain information and sub-frame information all are a kind of concrete indicating modes of calibration pilot frequency locations information, both can use separately, also can be used in combination, for example the base station can send the calibration pilot tone in the specific frequency domain scope of specific sub-frame, and terminal equipment is then calibrated the reception of pilot tone in corresponding scope.
In the application scenarios of reality; the concrete positional information that adopts which kind of above-mentioned mode to represent to calibrate pilot tone; and specifically which kind of mode to give terminal equipment by with the location information notification of concrete calibration pilot tone; all can be provided with according to actual needs, such variation does not influence protection scope of the present invention.
In order better to make terminal equipment carry out corresponding channel measurement according to the calibration pilot tone, before sending corresponding calibration pilot tone, the antenna amount that the base station can notify described terminal equipment to calibrate earlier, and the pattern of calibration pilot tone.
In concrete enforcement scene, the base station sends the transmission density that the transmission density of calibrating pilot tone is higher than CRS and CSI-RS to terminal equipment.
When a plurality of antenna of described calibration pilot tone correspondence, described a plurality of antennas are specially a plurality of antennas of corresponding same transmission point (being specifically as follows the base station), or distinguish a plurality of antennas of corresponding a plurality of transmission points (being specifically as follows the base station).
Step S302, described base station receive the calibration parameter that described terminal equipment returns, and described calibration parameter is determined according to the down channel measurement result in the corresponding scope of described calibration pilot tone by described terminal equipment.
Step S303, described base station are determined calibration factor according to the uplink pilot signal of described calibration parameter and the transmission of described terminal equipment, and are carried out antenna calibration according to described calibration factor.
Corresponding, in terminal equipment side, then be to receive the calibration pilot tone that the base station sends, and carry out the measurement of down channel according to corresponding calibration pilot tone, then, will feed back to the base station, and send uplink pilot signal according to the indication of base station according to the determined calibration parameter of corresponding measurement result, make the base station determine corresponding calibration factor in view of the above, realize the calibration of antenna, the transmission means of concrete calibration pilot tone is referring to above-mentioned explanation, and is similar with it, at this, no longer repeat specification.
It is pointed out that the determined calibration parameter of terminal equipment can be the quantized value of channel coefficients, also can be other parameter of being come out by channel calculation, such variation do not influence protection scope of the present invention,
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
By using the technical scheme of the embodiment of the invention, send the calibration pilot tone by the base station to terminal equipment, so that terminal equipment carries out the channel measurement and the feedback information of antenna calibration according to this calibration pilot tone, by such processing, make the terminal equipment can be according to the pilot signal that meets many antennas scene needs, cooperate the base station to carry out antenna calibration, even not under the situation of strict establishment, also can realize antenna calibration accurately in the up-downgoing reciprocity.
Below, the application scenarios in conjunction with concrete describes the technical scheme that the embodiment of the invention proposed.
The embodiment of the invention has proposed a kind of antenna calibration method, send to the calibration pilot tone of the UE-specific of terminal equipment according to the base station, terminal equipment carries out corresponding channel measurement and feedback information, make the base station can determine corresponding calibration factor in view of the above, antenna is calibrated, realized the antenna calibration under many antennas scene, not under the situation of strict establishment, can realize the calibration of antenna at the up-downgoing channel reciprocity.
With reference to aforesaid mode one and mode two, the embodiment of the invention specifies antenna calibration handling process under the application scenarios that adopts mode one and mode two respectively by following embodiment respectively.
As shown in Figure 4, be the schematic flow sheet of the antenna calibration method under a kind of concrete application scenarios that the embodiment of the invention proposed.
In the present embodiment, employing mode one, promptly the mode that directly sends a notification message to terminal equipment of base station is calibrated the notice of the positional information of pilot tone, for convenience of description, adopt the positional information of frequency domain information as the calibration pilot tone in the present embodiment, concrete processing procedure is as follows:
Step S401, each UE report the ability information of self to the base station.
Be that each UE need report whether support to calibrate required measurement and feedback.
The ability information of each UE that step S402, base station basis receive selects to participate in the UE of antenna calibration, and notifies this UE to participate in antenna calibration.
In concrete enforcement scene, base station selected UE can be the terminal that channel quality is good and translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, below the UE of each step all refer to UE1, no longer repeat specification.
Step S403, base station notify this UE to measure down channel in certain frequency domain scope, the pilot tone that is specifically designed to calibration measurement that exists the base station to send in this frequency domain scope.
In concrete enforcement scene, the base station is by this frequency domain scope of the semi-static configuration of high-level signaling, perhaps dynamically indicate this frequency domain scope by physical layer control signaling, perhaps UE measures down channel in the fixedly frequency domain scope of making an appointment, the pilot tone that is specifically designed to calibration measurement that exists the base station to send in this frequency domain scope.
In the present embodiment, the mode that the UE that directly calibrates to participation with the base station in this step sends frequency domain information is an example, illustrates accordingly.
The frequency domain information that the base station sent can be merged into a piece of news with the message of notifying this UE to participate in calibration and send; also can be before or after the message of notifying this UE to participate in calibration sends; form with independent message sends to UE, and the variation of concrete send mode does not influence protection scope of the present invention.
In this step, message and the frequency domain information of notifying this UE to participate in calibration sends by step S402 and step S403 respectively.
Need further be pointed out that, in concrete enforcement scene, the base station also needs the number of antennas of notifying UE to calibrate, and the calibration pilot tone of every antenna shared RE in the determined scope of resource in aforesaid step S403, UE promptly calibrates the pattern of pilot tone, so that can carry out corresponding channel measurement according to the calibration pilot tone accurately.
Step S404, base station send the calibration pilot tone to UE in corresponding frequency domain scope.
In concrete enforcement scene, the calibration pilot tone can use the density higher than CRS and CSI-RS etc. to send, to guarantee the quality of channel estimating.
Be illustrated in figure 5 as the calibration pilot tone schematic diagram of four antennas in 1 PRB, the calibration pilot tone of every antenna takies 4 RE, and the pilot tone of four antennas takies different RE.Every antenna does not send any signal on the RE of other antenna transmission calibration pilot tones.
Many antennas of calibration pilot tone can be the antennas of same transmission point (base station), also can be the antennas from difference transmission point.For example, 4 antennas shown in Figure 5 can be 4 antennas of a base station, perhaps are respectively the antennas of two 2 antenna base stations.Terminal can not distinguished every antenna respectively from which transmission point when measuring.
Step S405, UE receive the calibration pilot tone in corresponding frequency domain scope, and down channel is measured.
Step S406, UE calculate calibration parameter and feed back to the base station by up channel according to the channel information of measuring.
In actual applications, calibration parameter can be the quantized value of channel coefficients, perhaps other parameters of being come out by channel calculation.
Step S407, base station are calculated calibration factor according to the calibration parameter of terminal feedback and the uplink pilot signal of UE transmission, and are calibrated.
As shown in Figure 6, be the schematic flow sheet of the antenna calibration method under a kind of concrete application scenarios that the embodiment of the invention proposed.
In the present embodiment, employing mode one, promptly the mode that directly sends a notification message to terminal equipment of base station is calibrated the notice of the positional information of pilot tone, for convenience of description, adopt the positional information of sub-frame information as the calibration pilot tone in the present embodiment, concrete processing procedure is as follows:
Step S601, each UE report the ability information of self to the base station.
Be that each UE need report whether support to calibrate required measurement and feedback.
The ability information of each UE that step S602, base station basis receive selects to participate in the UE of antenna calibration, and notifies this UE to participate in antenna calibration.
In concrete enforcement scene, base station selected UE can be the terminal that channel quality is good and translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, below the UE of each step all refer to UE1, no longer repeat specification.
Step S603, base station notify this UE to measure down channel in certain subframe scope, the pilot tone that is specifically designed to calibration measurement that exists the base station to send in this subframe scope.
In concrete enforcement scene, the base station is by this subframe scope of the semi-static configuration of high-level signaling, perhaps dynamically indicate this subframe scope by physical layer control signaling, perhaps UE measures down channel in the fixedly subframe scope of making an appointment, the pilot tone that is specifically designed to calibration measurement that exists the base station to send in this subframe scope.
In the present embodiment, the mode that the UE that directly calibrates to participation with the base station in this step sends sub-frame information is an example, illustrates accordingly.And the concrete form of sub-frame information can be the base station send cycle and sub-frame offset to UE, UE can determine corresponding sub-frame information in view of the above.
The sub-frame information that the base station sent can be merged into a piece of news with the message of notifying this UE to participate in calibration and send; also can be before or after the message of notifying this UE to participate in calibration sends; form with independent message sends to UE, and the variation of concrete send mode does not influence protection scope of the present invention.
In this step, message and the sub-frame information of notifying this UE to participate in calibration sends by step S602 and step S603 respectively.
Need further be pointed out that, in concrete enforcement scene, the base station also needs the number of antennas of notifying UE to calibrate, and the calibration pilot tone of every antenna shared RE in the determined scope of resource in aforesaid step S603, UE promptly calibrates the pattern of pilot tone, so that can carry out corresponding channel measurement according to the calibration pilot tone accurately.
Step S604, base station send the calibration pilot tone to UE on corresponding subframe.
In concrete enforcement scene, the calibration pilot tone can use the density higher than CRS and CSI-RS etc. to send, to guarantee the quality of channel estimating.
Concrete transmission example equally as shown in Figure 5, in this no longer repeat specification.
Step S605, UE receive the calibration pilot tone in corresponding subframe scope, and down channel is measured.
Step S606, UE calculate calibration parameter and feed back to the base station by up channel according to the channel information of measuring.
In actual applications, calibration parameter can be the quantized value of channel coefficients, perhaps other parameters of being come out by channel calculation.
Step S607, base station are calculated calibration factor according to the calibration parameter of terminal feedback and the uplink pilot signal of UE transmission, and are calibrated.
As shown in Figure 7, be the schematic flow sheet of the antenna calibration method under a kind of concrete application scenarios that the embodiment of the invention proposed.
In the present embodiment, employing mode two, promptly base station and UE make an appointment and calibrate the positional information of pilot tone, for convenience of description, adopt the positional information of frequency domain information as the calibration pilot tone in the present embodiment, and concrete processing procedure is as follows:
Step S701, base station and each UE frequency domain information of making an appointment.
Step S702, each UE report the ability information of self to the base station.
Be that each UE need report whether support to calibrate required measurement and feedback.
The ability information of each UE that step S703, base station basis receive selects to participate in the UE of antenna calibration, and notifies this UE to participate in antenna calibration.
In concrete enforcement scene, base station selected UE can be the terminal that channel quality is good and translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, below the UE of each step all refer to UE1, no longer repeat specification.
Step S704, UE determine the positional information of calibration pilot tone according to default frequency domain information.
Need further be pointed out that, in concrete enforcement scene, the number of antennas that the base station can notify UE to calibrate, and the calibration pilot tone of every antenna shared RE in the pairing scope of resource of preset frequency domain information, UE promptly calibrates the pattern of pilot tone, so that can carry out corresponding channel measurement according to the calibration pilot tone accurately.
Step S705, base station send the calibration pilot tone to UE in corresponding frequency domain scope.
In concrete enforcement scene, the calibration pilot tone can use the density higher than CRS and CSI-RS etc. to send, to guarantee the quality of channel estimating.Many antennas of calibration pilot tone can be the antennas of same transmission point (base station), also can be the antennas from difference transmission point.
Concrete transmission example equally as shown in Figure 5, in this no longer repeat specification.
Step S706, terminal equipment receive the calibration pilot tone on corresponding frequency domain scope, and down channel is measured.
Step S707, terminal equipment calculate calibration parameter and feed back to the base station by up channel according to the channel information of measuring.
In actual applications, calibration parameter can be the quantized value of channel coefficients, perhaps other parameters of being come out by channel calculation.
Step S708, base station are calculated calibration factor according to the calibration parameter of terminal feedback and the uplink pilot signal of terminal equipment transmission, and are calibrated.
As shown in Figure 8, be the schematic flow sheet of the antenna calibration method under a kind of concrete application scenarios that the embodiment of the invention proposed.
In the present embodiment, employing mode two, promptly base station and UE make an appointment and calibrate the positional information of pilot tone, for convenience of description, adopt the positional information of sub-frame information as the calibration pilot tone in the present embodiment, and concrete processing procedure is as follows:
Step S801, base station and each UE make an appointment and calibrate the positional information of pilot tone.
Step S802, each UE report the ability information of self to the base station.
Be that each UE need report whether support to calibrate required measurement and feedback.
The ability information of each UE that step S803, base station basis receive selects to participate in the UE of antenna calibration, and notifies this UE to participate in antenna calibration.
In concrete enforcement scene, base station selected UE can be the terminal that channel quality is good and translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, below the UE of each step all refer to UE1, no longer repeat specification.
In the present embodiment, because the positional information of calibration pilot tone is actual to be sub-frame information, sub-frame information can with the cycle+mode of subframe skew determines, in the application scenarios of reality, the positional information of calibration pilot tone can be made an appointment and be adopted sub-frame information to determine, but concrete cycle and sub-frame offset can be given terminal equipment by base station configuration.
For example the cycle is T Period, the subframe skew is S Offset, then having the condition of calibration pilot tone in subframe S is (S-S Offset) mod T Period=0.
Certainly, sub-frame information also can dynamically be indicated by physical layer signaling, and is concrete with reference to the mode among the aforesaid step S403, explanation no longer separately in the present embodiment.
And on the other hand, aforesaid frequency domain information also can adopt the similar method of this step to make an appointment in base station and UE in advance, and the scheme that such variation can be used in the present embodiment is equally handled, and belongs to protection scope of the present invention equally.
Step S804, UE determine the positional information of calibration pilot tone according to presupposed information.
Need further be pointed out that, in concrete enforcement scene, the number of antennas that the base station can notify UE to calibrate, and the calibration pilot tone of every antenna shared RE in the default pairing scope of resource of sub-frame information, UE promptly calibrates the pattern of pilot tone, so that can carry out corresponding channel measurement according to the calibration pilot tone accurately.
Step S805, base station send the calibration pilot tone to UE on corresponding subframe.
In concrete enforcement scene, the calibration pilot tone can use the density higher than CRS and CSI-RS etc. to send, to guarantee the quality of channel estimating.Many antennas of calibration pilot tone can be the antennas of same transmission point (base station), also can be the antennas from difference transmission point.
Concrete transmission example equally as shown in Figure 5, in this no longer repeat specification.
Step S806, terminal equipment receive the calibration pilot tone on corresponding subframe, and down channel is measured.
Step S807, terminal equipment calculate calibration parameter and feed back to the base station by up channel according to the channel information of measuring.
In actual applications, calibration parameter can be the quantized value of channel coefficients, perhaps other parameters of being come out by channel calculation.
Step S808, base station are calculated calibration factor according to the calibration parameter of terminal feedback and the uplink pilot signal of terminal equipment transmission, and are calibrated.
Need further be pointed out that, above-mentioned frequency domain information and sub-frame information also can combine the positional information as the calibration pilot tone, promptly in the specific frequency domain scope of specific sub-frame, there is the calibration pilot tone, and the send mode of concrete frequency domain information and sub-frame information can be the same or different, for example:
1, base station high-level signaling configuration frequency domain information and sub-frame information.
2, base station high-level signaling configuration frequency domain information, and adopt physical layer control signaling dynamically to indicate sub-frame information.
3, physical layer signaling is dynamically indicated frequency domain information and sub-frame information.
Concrete send mode also has other compound mode, more than three kinds of compound modes be the preferred exemplary that the embodiment of the invention provides, the variation of concrete compound mode can't influence protection scope of the present invention.
As shown in Figure 9, be the schematic flow sheet of the antenna calibration method under a kind of concrete application scenarios that the embodiment of the invention proposed.
In the present embodiment, employing mode one, be the notice that mode that the base station directly sends a notification message to terminal equipment is calibrated the positional information of pilot tone, the base station sends frequency domain information and the sub-frame information positional information as the calibration pilot tone to terminal in the present embodiment, and concrete processing procedure is as follows:
Step S901, each UE report the ability information of self to the base station.
Be that each UE need report whether support to calibrate required measurement and feedback.
The ability information of each UE that step S902, base station basis receive selects to participate in the UE of antenna calibration, and notifies this UE to participate in antenna calibration.
In concrete enforcement scene, base station selected UE can be the terminal that channel quality is good and translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, below the UE of each step all refer to UE1, no longer repeat specification.
Step S903, base station notify this UE (in the certain frequency domain in certain subframe scope) in certain time-frequency scope to measure down channel, the pilot tone that is specifically designed to calibration measurement that exists the base station to send in this time-frequency scope.
In concrete enforcement scene, the base station is by high-level signaling configuration frequency domain information and sub-frame information, perhaps the base station disposes frequency domain information by high-level signaling, and adopt physical layer control signaling dynamically to indicate sub-frame information, perhaps frequency domain information and sub-frame information are dynamically indicated by physical layer signaling in the base station.
The concrete form of sub-frame information can be that the base station sends cycle and sub-frame offset to UE, and UE can determine corresponding sub-frame information in view of the above.Can calculating of sub-frame information by the subframe that physical layer is controlled the signaling place, send n subframe as physical layer control signaling, then corresponding sub-frame information can be defined as n+k subframe, and wherein k is the parameter of making an appointment, or the base station is notified to the parameter of terminal.
Sub-frame information can send in a piece of news with frequency domain information, also can be placed in the independent message to send separately.
Sub-frame information that the base station sent and frequency domain information can be merged into a piece of news with the message of notifying this UE to participate in calibration and send; also can be before or after the message of notifying this UE to participate in calibration sends; form with independent message sends to UE, and the variation of concrete send mode does not influence protection scope of the present invention.
Need further be pointed out that, in concrete enforcement scene, the base station also needs the number of antennas of notifying UE to calibrate, and the calibration pilot tone of every antenna shared RE in the determined scope of resource in aforesaid step 903, UE promptly calibrates the pattern of pilot tone, so that can carry out corresponding channel measurement according to the calibration pilot tone accurately.
Send the calibration pilot tone to UE in step S904, the corresponding frequency domain of base station in corresponding subframe scope.
In concrete enforcement scene, the calibration pilot tone can use the density higher than CRS and CSI-RS etc. to send, to guarantee the quality of channel estimating.
Concrete transmission example equally as shown in Figure 5, in this no longer repeat specification.
Receive the calibration pilot tone in step S905, the UE corresponding frequency domain in corresponding subframe scope, and down channel is measured.
Step S906, UE calculate calibration parameter and feed back to the base station by up channel according to the channel information of measuring.
In actual applications, calibration parameter can be the quantized value of channel coefficients, perhaps other parameters of being come out by channel calculation.
Step S907, base station are calculated calibration factor according to the calibration parameter of terminal feedback and the uplink pilot signal of UE transmission, and are calibrated.
No matter adopt which kind of above-mentioned mode; UE is after the positional information that receives corresponding calibration pilot tone; in corresponding scope, estimate down channel; concrete implementation can be with reference to the explanation of previous embodiment; at this repeated description no longer, the variation of such positional information particular type can't influence protection scope of the present invention.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
By using the technical scheme of the embodiment of the invention, send the calibration pilot tone by the base station to terminal equipment, so that terminal equipment carries out the channel measurement and the feedback information of antenna calibration according to this calibration pilot tone, by such processing, make the terminal equipment can be according to the pilot signal that meets many antennas scene needs, cooperate the base station to carry out antenna calibration, even not under the situation of strict establishment, also can realize antenna calibration accurately in the up-downgoing reciprocity.
In order to realize the technical scheme of the embodiment of the invention, the embodiment of the invention also provides a kind of base station, and its structural representation comprises as shown in figure 10 at least:
Sending module 101 is used for sending the calibration pilot tone to terminal equipment;
Receiver module 102 is used to receive the calibration parameter that described terminal equipment returns, and the down channel measurement result in the corresponding scope of calibration pilot tone that described calibration parameter is sent according to described sending module 101 by described terminal equipment is determined;
Determination module 103 is used for determining calibration factor according to the uplink pilot signal that the received calibration parameter of described receiver module 102 and described terminal equipment send, and carries out antenna calibration according to described calibration factor.
Concrete,
Described receiver module 102 also was used at described sending module 101 before terminal equipment sends the calibration pilot tone, self the ability information that receives that described terminal equipment reports;
Described sending module 101 also is used for the ability information according to each received terminal equipment of described receiver module 102, determines that described terminal equipment participates in calibration, and sends corresponding notification message to described terminal equipment.
Wherein, described sending module 101 also is used for giving described terminal equipment with the location information notification of described calibration pilot tone in the following manner:
Pairing frequency domain information of described calibration pilot tone and/or sub-frame information are sent to described terminal equipment; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that described terminal equipment participates in calibration, notify described terminal equipment in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information, to receive described calibration pilot tone.
Further, described sending module 101 specifically is used for:
Semi-static by high-level signaling, or by physical layer control signaling dynamically to the pairing frequency domain information of the described calibration pilot tone of described terminal equipment configuration; And/or,
Control signaling dynamically to the pairing sub-frame information of the described calibration pilot tone of described terminal equipment configuration by physical layer.
In the application scenarios of reality, described sending module 101 specifically is used for:
Under the situation of the information of the fixedly frequency domain scope at the described calibration pilot tone of in described base station and described terminal equipment, making an appointment place, participate in calibration if determine described terminal equipment, then notify described terminal equipment in the pairing scope of described frequency domain information of making an appointment, to receive described calibration pilot tone; And/or,
Under the situation of cycle and sub-frame offset of in described base station and described terminal equipment, making an appointment, participate in calibration if determine described terminal equipment, then notify described terminal equipment to determine the pairing sub-frame information of described calibration pilot tone, and in the pairing scope of described sub-frame information, receive described calibration pilot tone according to described cycle and sub-frame offset.
Further, described sending module 101 also was used for before sending the calibration pilot tone to terminal equipment the antenna amount of notifying described terminal equipment to calibrate, and the pattern of calibration pilot tone.
Further, the embodiment of the invention has also proposed a kind of terminal equipment, and its structural representation comprises as shown in figure 11 at least:
Receiver module 111 is used to receive the calibration pilot tone that the base station sends;
Determination module 112 is used for according to described receiver module 111 received calibration pilot tones down channel being measured, and determines calibration parameter according to corresponding measurement result;
Sending module 113 is used for sending described calibration parameter and uplink pilot signal to described base station, so that corresponding calibration factor is determined in described base station, and carries out antenna calibration according to calibration factor.
Wherein, described sending module 113 also was used for before described receiver module 111 receives the calibration pilot tone that base stations send, the ability information of the described terminal equipment that reports to described base station;
Described receiver module 111 also is used to receive the notification message that the described terminal equipment of affirmation that described base station sends participates in calibration.
On the other hand, described receiver module 111, the positional information of the calibration pilot tone that specifically is used in the following manner determining that described base station is sent:
Receive pairing frequency domain information of described calibration pilot tone and/or sub-frame information that described base station sends; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that in described base station described terminal equipment participates in calibration, receive the notification message that in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information, receives described calibration pilot tone that described base station sends.
Concrete, described receiver module 111 specifically is used for:
It is semi-static by high-level signaling to receive described base station, or controls the pairing frequency domain information of described calibration pilot tone of signaling dynamic-configuration by physical layer; And/or,
Receive the pairing sub-frame information of described calibration pilot tone of described base station physical layer control signaling dynamic-configuration.
On the other hand, described receiver module 111 specifically is used for:
Under the situation of the information of the fixedly frequency domain scope at the described calibration pilot tone of in described base station and described terminal equipment, making an appointment place, receive the notification message that in the pairing scope of described frequency domain information of making an appointment, receives described calibration pilot tone that described base station sends; And/or,
Under the situation of cycle and sub-frame offset of in described base station and described terminal equipment, making an appointment, what receive that described base station sends determines the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset, and receives the notification message of described calibration pilot tone in the pairing scope of described sub-frame information.
In the application scenarios of reality,
Described receiver module 111 also was used for before the calibration pilot tone that receives the transmission of described base station, according to the message that received described base station sends, need to determine the antenna amount of calibration, and the pattern of calibrating pilot tone.
Need be pointed out that further that described determination module 112 specifically is used for:
According to the quantized value of the pairing channel coefficients of described measurement result, determine described calibration parameter; Or,
To determine described calibration parameter according to resulting other parameters of described measurement result.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
By using the technical scheme of the embodiment of the invention, send the calibration pilot tone by the base station to terminal equipment, so that terminal equipment carries out the channel measurement and the feedback information of antenna calibration according to this calibration pilot tone, by such processing, make the terminal equipment can be according to the pilot signal that meets many antennas scene needs, cooperate the base station to carry out antenna calibration, even not under the situation of strict establishment, also can realize antenna calibration accurately in the up-downgoing reciprocity.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, the technical scheme of the embodiment of the invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, or network equipment etc.) each implements the described method of scene to carry out the embodiment of the invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred schematic diagram of implementing scene, module in the accompanying drawing or flow process might not be that the enforcement embodiment of the invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of implementing scene just to description.
More than disclosed only be the several concrete enforcement scene of the embodiment of the invention, still, the embodiment of the invention is not limited thereto, any those skilled in the art can think variation all should fall into the traffic limits scope of the embodiment of the invention.

Claims (30)

1. an antenna calibration method is characterized in that, may further comprise the steps at least:
The base station sends the calibration pilot tone to terminal equipment;
Described base station receives the calibration parameter that described terminal equipment returns, and described calibration parameter is determined according to the down channel measurement result in the corresponding scope of described calibration pilot tone by described terminal equipment;
Calibration factor is determined according to the uplink pilot signal of described calibration parameter and the transmission of described terminal equipment in described base station, and carries out antenna calibration according to described calibration factor.
2. the method for claim 1 is characterized in that, described base station also comprised before terminal equipment sends the calibration pilot tone:
The ability information of self that described base station receives that described terminal equipment reports;
Described base station is determined that described terminal equipment participates in calibration, and is sent the notification message that the described terminal equipment of affirmation participates in calibration to described terminal equipment according to the ability information of each terminal equipment that receives.
3. the method for claim 1 is characterized in that, the positional information of described calibration pilot tone is specifically notified described terminal equipment in the following manner:
Described base station sends to described terminal equipment with pairing frequency domain information of described calibration pilot tone and/or sub-frame information; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that in described base station described terminal equipment participates in calibration, notify described terminal equipment in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information, to receive described calibration pilot tone.
4. method as claimed in claim 3 is characterized in that, described base station sends to described terminal equipment with pairing frequency domain information of described calibration pilot tone and/or sub-frame information, specifically comprises:
Described base station is semi-static by high-level signaling, or controls signaling dynamically to the pairing frequency domain information of the described calibration pilot tone of described terminal equipment configuration by physical layer; And/or,
Signaling is controlled dynamically to the pairing sub-frame information of the described calibration pilot tone of described terminal equipment configuration by physical layer in described base station.
5. method as claimed in claim 4 is characterized in that, described base station, is specially dynamically to the pairing sub-frame information of the described calibration pilot tone of described terminal equipment configuration by physical layer control signaling:
Described base station sends cycle and sub-frame offset to described terminal equipment, so that described terminal equipment is determined the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset.
6. method as claimed in claim 3 is characterized in that, described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information specifically comprise:
The information of the fixedly frequency domain scope at the described calibration pilot tone of making an appointment in described base station and described terminal equipment place; And/or,
Make an appointment in described base station and the described terminal equipment cycle and sub-frame offset, after described base station determined that described terminal equipment participates in calibration, described base station notified described terminal equipment to determine the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset.
7. the method for claim 1 is characterized in that, described base station also comprised before terminal equipment sends the calibration pilot tone:
The antenna amount that described base station notifies described terminal equipment to calibrate, and the pattern of calibration pilot tone.
8. the method for claim 1 is characterized in that, when a plurality of antenna of described calibration pilot tone correspondence, described a plurality of antennas are specially:
A plurality of antennas of corresponding same base station; Or,
A plurality of antennas of the corresponding a plurality of base stations of difference.
9. a base station is characterized in that, comprises at least:
Sending module is used for sending the calibration pilot tone to terminal equipment;
Receiver module is used to receive the calibration parameter that described terminal equipment returns, and described calibration parameter is determined according to the down channel measurement result in the corresponding scope of calibration pilot tone that described sending module sent by described terminal equipment;
Determination module is used for determining calibration factor according to the uplink pilot signal that the received calibration parameter of described receiver module and described terminal equipment send, and carries out antenna calibration according to described calibration factor.
10. base station as claimed in claim 9 is characterized in that,
Described receiver module also was used at described sending module before terminal equipment sends the calibration pilot tone, self the ability information that receives that described terminal equipment reports;
Described sending module also is used for the ability information according to each received terminal equipment of described receiver module, determines that described terminal equipment participates in calibration, and sends corresponding notification message to described terminal equipment.
11. base station as claimed in claim 9 is characterized in that, described sending module also is used for giving described terminal equipment with the location information notification of described calibration pilot tone in the following manner:
Pairing frequency domain information of described calibration pilot tone and/or sub-frame information are sent to described terminal equipment; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that described terminal equipment participates in calibration, notify described terminal equipment in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information, to receive described calibration pilot tone.
12. base station as claimed in claim 11 is characterized in that, described sending module specifically is used for:
Semi-static by high-level signaling, or by physical layer control signaling dynamically to the pairing frequency domain information of the described calibration pilot tone of described terminal equipment configuration; And/or,
Control signaling dynamically to the pairing sub-frame information of the described calibration pilot tone of described terminal equipment configuration by physical layer.
13. base station as claimed in claim 11 is characterized in that, described sending module specifically is used for:
Under the situation of the information of the fixedly frequency domain scope at the described calibration pilot tone of in described base station and described terminal equipment, making an appointment place, participate in calibration if determine described terminal equipment, then notify described terminal equipment in the pairing scope of described frequency domain information of making an appointment, to receive described calibration pilot tone; And/or,
Under the situation of cycle and sub-frame offset of in described base station and described terminal equipment, making an appointment, participate in calibration if determine described terminal equipment, then notify described terminal equipment to determine the pairing sub-frame information of described calibration pilot tone, and in the pairing scope of described sub-frame information, receive described calibration pilot tone according to described cycle and sub-frame offset.
14. base station as claimed in claim 9 is characterized in that, described sending module also is used for:
Before sending the calibration pilot tone to terminal equipment, the antenna amount of notifying described terminal equipment to calibrate, and the pattern of calibration pilot tone.
15. an antenna calibration method is characterized in that, may further comprise the steps at least:
Terminal equipment receives the calibration pilot tone that the base station sends;
Described terminal equipment is measured down channel according to described calibration pilot tone, and determines calibration parameter according to corresponding measurement result;
Described terminal equipment sends described calibration parameter and uplink pilot signal to described base station, so that corresponding calibration factor is determined in described base station, and carries out antenna calibration according to calibration factor.
16. method as claimed in claim 15 is characterized in that, described terminal equipment receives before the calibration pilot tone of base station transmission, also comprises:
The ability information of self that described terminal equipment reports to described base station;
Described terminal equipment receives the notification message of affirmation self the participation calibration of described base station transmission.
17. method as claimed in claim 15 is characterized in that, described terminal equipment is determined the positional information of the calibration pilot tone that described base station is sent in the following manner:
Described terminal equipment receives pairing frequency domain information of described calibration pilot tone and/or the sub-frame information that described base station sends; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that in described base station described terminal equipment participates in calibration, described terminal equipment receives the notification message that receives described calibration pilot tone in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information that described base station sends.
18. method as claimed in claim 17 is characterized in that, described terminal equipment receives pairing frequency domain information of described calibration pilot tone and/or the sub-frame information that described base station sends, and specifically comprises:
It is semi-static by high-level signaling that described terminal equipment receives described base station, or control the pairing frequency domain information of described calibration pilot tone of signaling dynamic-configuration by physical layer; And/or,
Described terminal equipment receives the pairing sub-frame information of described calibration pilot tone of described base station physical layer control signaling dynamic-configuration.
19. method as claimed in claim 18 is characterized in that, described terminal equipment receives the pairing sub-frame information of described calibration pilot tone of described base station physical layer control signaling dynamic-configuration, is specially:
Described terminal equipment receives cycle and the sub-frame offset that described base station sends, and determines the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset.
20. method as claimed in claim 17 is characterized in that, described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information specifically comprise:
The information of the fixedly frequency domain scope at the described calibration pilot tone of making an appointment in described base station and described terminal equipment place; And/or,
Make an appointment in described base station and the described terminal equipment cycle and sub-frame offset, after described base station determined that described terminal equipment participates in calibration, what described terminal equipment received that described base station sends determined the notification message of the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset.
21. method as claimed in claim 15 is characterized in that, described terminal equipment receives before the calibration pilot tone of base station transmission, also comprises:
The message that described terminal equipment sends according to described base station, definite antenna amount that needs calibration, and the pattern of calibration pilot tone.
22. method as claimed in claim 15 is characterized in that, when a plurality of antenna of described calibration pilot tone correspondence, described a plurality of antennas are specially:
A plurality of antennas of corresponding same base station; Or,
A plurality of antennas of the corresponding a plurality of base stations of difference.
23. method as claimed in claim 15 is characterized in that, the corresponding measurement result of described basis is determined calibration parameter, is specially:
Described terminal equipment is determined described calibration parameter according to the quantized value of the pairing channel coefficients of described measurement result; Or,
Described terminal equipment will be determined described calibration parameter according to resulting other parameters of described measurement result.
24. a terminal equipment is characterized in that, comprises at least:
Receiver module is used to receive the calibration pilot tone that the base station sends;
Determination module is used for according to the received calibration pilot tone of described receiver module down channel being measured, and determines calibration parameter according to corresponding measurement result;
Sending module is used for sending described calibration parameter and uplink pilot signal to described base station, so that corresponding calibration factor is determined in described base station, and carries out antenna calibration according to calibration factor.
25. terminal equipment as claimed in claim 24 is characterized in that,
Described sending module also was used for before described receiver module receives the calibration pilot tone that the base station sends, the ability information of the described terminal equipment that reports to described base station;
Described receiver module also is used to receive the notification message that the described terminal equipment of affirmation that described base station sends participates in calibration.
26. terminal equipment as claimed in claim 24 is characterized in that, described receiver module, and the positional information of the calibration pilot tone that specifically is used in the following manner determining that described base station is sent:
Receive pairing frequency domain information of described calibration pilot tone and/or sub-frame information that described base station sends; Or,
Described base station and described terminal equipment make an appointment pairing frequency domain information of described calibration pilot tone and/or sub-frame information, and when determining that in described base station described terminal equipment participates in calibration, receive the notification message that in described frequency domain information of making an appointment and/or the pairing scope of sub-frame information, receives described calibration pilot tone that described base station sends.
27. terminal equipment as claimed in claim 26 is characterized in that, described receiver module specifically is used for:
It is semi-static by high-level signaling to receive described base station, or controls the pairing frequency domain information of described calibration pilot tone of signaling dynamic-configuration by physical layer; And/or,
Receive the pairing sub-frame information of described calibration pilot tone of described base station physical layer control signaling dynamic-configuration.
28. terminal equipment as claimed in claim 26 is characterized in that, described receiver module specifically is used for:
Under the situation of the information of the fixedly frequency domain scope at the described calibration pilot tone of in described base station and described terminal equipment, making an appointment place, receive the notification message that in the pairing scope of described frequency domain information of making an appointment, receives described calibration pilot tone that described base station sends; And/or,
Under the situation of cycle and sub-frame offset of in described base station and described terminal equipment, making an appointment, what receive that described base station sends determines the pairing sub-frame information of described calibration pilot tone according to described cycle and sub-frame offset, and receives the notification message of described calibration pilot tone in the pairing scope of described sub-frame information.
29. terminal equipment as claimed in claim 24 is characterized in that,
Described receiver module also was used for before the calibration pilot tone that receives the transmission of described base station, according to the message that received described base station sends, need to determine the antenna amount of calibration, and the pattern of calibrating pilot tone.
30. terminal equipment as claimed in claim 24 is characterized in that, described determination module specifically is used for:
According to the quantized value of the pairing channel coefficients of described measurement result, determine described calibration parameter; Or,
To determine described calibration parameter according to resulting other parameters of described measurement result.
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