CN102237908B - Data transmission method and equipment - Google Patents
Data transmission method and equipment Download PDFInfo
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- CN102237908B CN102237908B CN201110231334.6A CN201110231334A CN102237908B CN 102237908 B CN102237908 B CN 102237908B CN 201110231334 A CN201110231334 A CN 201110231334A CN 102237908 B CN102237908 B CN 102237908B
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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
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- 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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- 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
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Abstract
The embodiment of the invention discloses a data transmission method and data transmission equipment. In the technical scheme provided by the embodiment of the invention, a base station triggers user equipment by a triggering message for calibration measurement and feedback, and informs the location information of corresponding calibration information; and the user equipment performs the calibration measurement and the feedback on corresponding resources according to a fixed time sequence, and the base station performs antenna calibration according to feedback information. Therefore, the base station can flexibly control the time of calibration measurement, and improve the accuracy and control flexibility of calibration operations.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of data transmission method and equipment.
Background technology
MIMO(Multiple-Input Multiple-Output, multiple-input and multiple-output) system refers to the system that many antennas are all housed at transmitting terminal and receiving terminal.Mimo system adds the process in spatial domain on the basis of traditional time frequency processing, can obtain ARRAY PROCESSING gain and diversity gain further.In mimo system, if transmitter can know channel information in some way, just can be optimized transmission signal according to the characteristic of channel, to improve the quality of reception and to reduce the requirement to Receiver Complexity.Linear predictive coding/beamforming technique is exactly wherein a kind of optimization method, is antagonism fading channel, reduces error probability, improve the effective means of systematic function.
In multiple antennas linear predictive coding/beamforming transmission technology, base station to UE(User Equipment, subscriber equipment, i.e. terminal equipment) channel information be a key factor of influential system performance.FDD(Frequency Division Duplexing, Frequency Division Duplexing (FDD)) in system, by up channel, UE will estimate that the feedback of channel information obtained is to base station, occupies a large amount of uplink channel resources, and can introduce quantization error etc.At TDD(Time Division Duplexing, time division duplex) in system, the signal of uplink and downlink sends in identical frequency range, and therefore the reciprocity of up-downgoing channel is set up.
So-called reciprocity refers to that up channel is identical with down channel.The upward signal utilizing up-downgoing channel reciprocity can be sent by UE estimates up channel, thus obtains descending channel information, eliminates a large amount of feedback overheads.
The reciprocity of channel is set up the physical channel of spatial.Signal will be transported to antenna through radiating circuit after Base-Band Processing completes, and also will be transported to base band through receiving circuit from the signal that antenna receives.In general, radiating circuit and receiving circuit are two different circuit, therefore by radiating circuit and the time delay that receiving circuit is introduced and amplitude gain not identical, that is transmission circuit does not mate.Radiating circuit and not mating of receiving circuit, cause up-downgoing channel reciprocity strictly not set up.
If up-downgoing circuit does not mate, when especially time delay is different, then cannot ensures the signal in-phase stacking of each antenna, the signal to noise ratio of Received signal strength be reduced, causes penalty.
It is a kind of that to offset the method that up-downgoing circuit do not mate the impact caused be carry out antenna calibration: the information reported according to UE and/or base station measurement to information calculate calibration factor, adjustment is compensated to the channel estimated by upward signal, or compensates adjustment to sent data.
On the other hand, coordinated multipoint transmission (Coordinated Multi-Point Transmission, CoMP) technology is the cooperation between multiple transfer points that geographical position is separated.Multiple transfer point is multiple transmission equipments of the base station of different districts or the separation of an Intra-cell.The cooperation transmission that coordinated multipoint transmission technical point is descending and up combine reception.Descending coordinated multipoint transmission technical scheme is mainly divided into two classes: cooperative scheduling and combine transmission.
Cooperative scheduling be by community between time, frequency and space resources coordination, avoid or reduce interference each other.The interference of minizone is the principal element of restriction cell edge UE performance, and therefore cooperative scheduling is by reducing the interference of minizone, can improve the performance of cell edge UE.As shown in Figure 1, by the cooperative scheduling of 3 communities, three UE that may mutually disturb scheduled in mutually orthogonal resource and (represent different resources with different colors), effectively avoid the interference between community.
In associating delivery plan, multiple community sends data, to strengthen UE Received signal strength to UE simultaneously.As shown in Figure 2, three communities send data to a UE on the same resource, and UE receives the signal of multiple community simultaneously.On the one hand, the useful signal superposition from multiple community can promote the signal quality that UE receives, and on the other hand, reduces the interference that UE is subject to, thus improves systematic function.
Be similar to single-point (single community) multi-antenna transmitting transmission scheme, whether coordinated multipoint transmission technology can effectively be implemented to depend on the obtainable channel condition information of transmitting terminal.After transmitting terminal obtains desirable channel condition information, can signal quality be improved by linear predictive coding (wave beam forming) technology and suppress user's interference.Transmitting terminal can obtain channel condition information by the feedback of terminal, but feedback channel can take valuable uplink frequency spectrum resource, thus reduces up spectrum efficiency.This point is particularly evident in coordinated multipoint transmission, and each community (transfer point) participating in cooperation transmission needs the channel condition information acquiring terminal, and therefore its feedback overhead linearly increases along with the number of cooperation point.Consider concrete transmission plan, also may be higher to channel condition information permissible accuracy, this just means and takies more uplink bandwidth resource.This very nervous uplink transmission resource now seems awkward more.Meanwhile, because the capacity constraint of up channel, inevitably there is quantization error in the channel condition information of feedback.Quantization error then can reduce the performance of coordinated multipoint transmission.Utilizing channel reciprocity to obtain channel condition information in TDD system and can not bring extra feedback overhead, and there is not the quantization error introduced because of feedback, is very competitive solution.
Realizing in process of the present invention, inventor finds at least there is following problem in prior art:
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).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 prior art unsuitable solution for antenna calibration.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method and equipment, solves in existing technical scheme, when up-downgoing reciprocity is not strictly set up, accurately can not realize the problem of antenna calibration.
For achieving the above object, the embodiment of the present invention provides a kind of antenna calibration method on the one hand, at least comprises the following steps:
When base station needs terminal equipment to carry out calibration measurement and feedback, described base station sends Trigger message to described terminal equipment;
Described base station notifies the positional information of described terminal equipment calibration pilot signal;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter, and corresponding subframe sends calibration pilot signal to described terminal equipment;
Described base station, according to feedback time parameter, corresponding subframe receives the calibration parameter information of described terminal equipment feedback;
Antenna calibration is carried out according to described calibration parameter information in described base station.
On the other hand, the embodiment of the present invention additionally provides a kind of base station, at least comprises:
Trigger module, during for carrying out calibration measurement and feedback at needs terminal equipment, sends Trigger message to described terminal equipment;
Sending module, for notifying the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and Measuring Time parameter, corresponding subframe sends calibration pilot signal to described terminal equipment;
Receiver module, for according to feedback time parameter, corresponding subframe receives the calibration parameter information of described terminal equipment feedback;
Calibration module, carries out antenna calibration for the calibration parameter information received by described receiver module.
On the other hand, the embodiment of the present invention additionally provides a kind of antenna calibration method, at least comprises the following steps:
Terminal equipment receives the Trigger message that base station sends;
Described terminal equipment receives the positional information of the calibration pilot signal that described base station sends;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the Measuring Time parameter that described base station is pre-configured, and corresponding subframe receives the calibration pilot signal that described base station sends;
Described terminal equipment is according to described calibration pilot signal determination calibration parameter information;
Described terminal equipment, according to the pre-configured feedback time parameter in described base station, corresponding subframe reports described calibration parameter information to described base station, carries out antenna calibration to make described base station according to described calibration parameter information.
On the other hand, the embodiment of the present invention additionally provides a kind of terminal equipment, at least comprises:
Receiver module, for receiving the Trigger message that base station sends, and the positional information of calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter that described base station is pre-configured, corresponding subframe receives the calibration pilot signal that described base station sends;
Determination module, for the calibration pilot signal determination calibration parameter information received by described receiver module;
Sending module, for according to the pre-configured feedback time parameter in described base station, corresponding subframe reports the determined calibration parameter information of described determination module to described base station, carries out antenna calibration to make described base station according to described calibration parameter information.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, calibration measurement and feedback is carried out by Trigger message triggering terminal equipment by base station, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back in corresponding resource, antenna calibration is carried out according to feedback information to make base station, thus base station can control the opportunity with calibration measurement flexibly by Trigger message, improve the precision of calibration operation and control flexibility ratio.
Accompanying drawing explanation
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;
The schematic flow sheet of a kind of antenna calibration method that Fig. 3 proposes for the embodiment of the present invention;
The schematic flow sheet of the antenna calibration method in a kind of concrete scene that Fig. 4 proposes for the embodiment of the present invention;
The schematic flow sheet of the antenna calibration method in a kind of concrete scene that Fig. 5 proposes for the embodiment of the present invention;
Fig. 6 is the structural representation of a kind of base station that the embodiment of the present invention proposes;
Fig. 7 is the structural representation of a kind of terminal equipment that the embodiment of the present invention proposes.
Embodiment
As stated in the Background Art, multi-antenna technology is one of key technology becoming Next-Generation Wireless Communication Systems, and the linear predictive coding/beamforming technique in multi-antenna technology is antagonism fading channel, reduces error probability, improves the effective means of systematic function.
TDD system utilizes the reciprocity of up-downgoing channel, and the UE estimated according to base station can obtain the descending channel information of base station to UE to the uplink channel information of base station, thus calculates pre-coding matrix/beam shape-endowing weight value.But up-downgoing reciprocity is not strictly set up in real system, this have impact on the performance of system.
In order to overcome such defect, the embodiment of the present invention proposes a kind of antenna calibration method, carries out calibration measurement and feedback by base station by the mode triggering terminal equipment of Trigger message, thus, realize the flexible control for the reality of calibration measurement, improve the precision of calibration.
As shown in Figure 3, be the schematic flow sheet of a kind of antenna calibration method that the embodiment of the present invention proposes, the method specifically comprises the following steps:
Step S301, base station send Trigger message to described terminal equipment.
Before this step, also comprise the selection course of the terminal equipment participating in calibration, be described as follows:
First, described base station receives the ability information of self that described terminal equipment reports, and certainly, in the processing procedure of reality, the ability information that base station can receive multiple terminal equipment reports, and participates in the terminal equipment of calibration according to these Information Selection.
When described base station is according to the ability information of each terminal equipment received, when determining that described terminal equipment participates in calibration, base station sends to the selected terminal equipment participating in calibration and confirms that described terminal equipment participates in the notification message of calibration.
In concrete enforcement scene, in this step, send the flow process of Trigger message, be specially base station and send to described terminal equipment the down physical layer control signal that triggering terminal equipment carries out calibration measurement or feedback.
When the pre-configured described terminal equipment in described base station carries out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal;
When the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, in described down physical layer control signal, corresponding frequency band is indicated whether to carry out calibration measurement and feedback by multiple bit.
Further, when the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, the mode of bitmap in described down physical layer control signal, is adopted to indicate corresponding frequency band to measure the need of carrying out and feed back.
On the other hand, in described down physical layer control signal, also comprise the resource allocation information of the up channel of calibration parameter information reporting, with the feedback making terminal equipment can carry out calibration parameter information in corresponding resource.
In concrete enforcement scene, described down physical layer control signal, also for trigger in corresponding band aperiodic SRS transmission, by with the coordinating of SRS aperiodic, the time delay between twice measurement can be reduced, improve the precision of calibration calculations.
Step S302, described base station notify the positional information of described terminal equipment calibration pilot signal.
Inform the positional information of the calibration pilot signal of terminal equipment in this step, be specially base station and pass through high-level signaling, or physical layer control signal sends the frequency band parameters of calibration measurement to described terminal equipment, wherein, the frequency band parameters of described calibration measurement, be specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
In concrete application scenarios, described frequency band parameters, at least comprises the resource location information shared by described frequency band, and described resource location information can be continuous print, also can be discontinuous, and such as, configurating terminal device is measured on one section of continuous print PRB.
In concrete enforcement scene, described base station is especially by high-level signaling, or physical layer control signal sends the pilot parameters in the frequency band corresponding to the frequency band parameters of described calibration measurement to described terminal equipment, such as port number, the running time-frequency resource position etc. taken.
In the application scenarios of reality; above-mentioned step S301 and step S302 does not have inevitable time order and function relation, and, may be incorporated in a piece of news and send; also can respectively by two independently message send, such defense belongs to protection scope of the present invention equally.
Step S303, described base station are according to the positional information of described calibration pilot signal, and Measuring Time parameter, and corresponding subframe sends calibration pilot signal to described terminal equipment.
Step S304, described base station, according to feedback time parameter, corresponding subframe receive the calibration parameter information of described terminal equipment feedback.
Measuring Time parameter in above two steps and feedback time parameter all completed configuration before step S302 and step S304 implements, and concrete configuration mode comprises two kinds:
(1) predetermined fixed value, the fixed value of namely making an appointment using described base station and described terminal equipment is as corresponding parameter.
(2) by message informing, the parameter information of described terminal equipment is namely informed by configuration messages using described base station as corresponding parameter.
After completing corresponding parameter configuration, corresponding parameter information has identical configuration for making base station and terminal equipment both sides to carrying out verifying the sequential measured and feed back, thus, the transmission of calibration pilot signal and the feedback of calibration parameter information can be carried out at corresponding timing position.
In concrete enforcement scene, corresponding Measuring Time parameter and feedback time parameter can calculate based on the time (such as subframe position) receiving Trigger message, thus determine the time of reception of concrete calibration information and the feedback time of calibration parameter information, wherein, in order to the Normal Feedback of calibration parameter information, the position of corresponding feedback time or feedback calibration parameter information should be later than the time or position that receive calibration pilot signal.
Calibration pilot signal can be CSI-RS, CRS, DMRS, also can be newly-designed pilot signal.
It is further noted that in the operation of reality, if in step S301, base station needs the frequency band parameters sending multiple frequency band to terminal equipment, so, needs the process fulfiled ahead of schedule also to comprise:
Described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter; Or,
Described base station, by sending configuration messages to described terminal equipment, notifies the Measuring Time parameter corresponding to each frequency band of described terminal equipment and feedback time parameter respectively.
Antenna calibration is carried out according to described calibration parameter information in step S305, described base station.
In concrete enforcement scene, above-mentioned handling process can be specially:
Base station sends Trigger message to described terminal equipment in the n-th subframe;
Described base station notifies the positional information of described terminal equipment calibration pilot signal;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter k, and the n-th+k subframe sends calibration pilot signal to described terminal equipment;
Described base station, according to feedback time parameter m, the n-th+m subframe receives the calibration parameter information of described terminal equipment feedback;
Antenna calibration is carried out according to described calibration parameter information in described base station;
Wherein, the value of m is greater than the value of k.
Corresponding, in terminal equipment side, it is then the Trigger message receiving base station transmission, and according to the positional information of corresponding calibration pilot signal, the calibration information sent in reception base station, corresponding position, then the feedback of corresponding calibration parameter information is being carried out to the feedback time that base station is arranged, thus, base station is coordinated to complete antenna calibration, reception calibration information wherein and the time of feedback calibration parameter information are all according to the corresponding time parameter information that base station is pre-configured, the basis in moment receiving Trigger message calculates and determines, concrete handling process is see above-mentioned explanation, similar with it, at this, no longer repeat specification.
Similar with the explanation of base station side, the handling process of terminal equipment side can specifically describe and be:
Terminal equipment receives the Trigger message of base station transmission in the n-th subframe;
Terminal equipment receives the positional information of the calibration pilot signal that base station sends;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the Measuring Time parameter k that described base station is pre-configured, and the n-th+k subframe receives the calibration pilot signal that described base station sends;
Described terminal equipment is according to described calibration pilot signal determination calibration parameter information;
Described terminal equipment, according to the pre-configured feedback time parameter m in described base station, the n-th+m subframe reports described calibration parameter information to described base station, carries out antenna calibration to make described base station according to described calibration parameter information;
Wherein, the value of m is greater than the value of k.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, calibration measurement and feedback is carried out by Trigger message triggering terminal equipment by base station, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back in corresponding resource, antenna calibration is carried out according to feedback information to make base station, thus base station can control the opportunity with calibration measurement flexibly by Trigger message, improve the precision of calibration operation and control flexibility ratio.
Below, in conjunction with concrete application scenarios, the technical scheme that the embodiment of the present invention proposes is described.
The embodiment of the present invention proposes a kind of antenna calibration method, the Trigger message sent by base station is carried out control terminal and whether performs calibration measurement and feedback, and corresponding calibration measurement with time of feedback, then carry out according to the unified sequential that base station and terminal equipment both sides are preset.
For convenience of description; the concrete example of subsequent embodiment of the present invention specifically using DCI information as Trigger message is described; certainly; in actual applications; other message that can realize trigger action equally also can be applied to the technical scheme that the embodiment of the present invention proposes, and such change does not affect protection scope of the present invention.
Further, be directed to the difference that base station triggers terminal equipment carries out one or more measurement, subsequent embodiment of the present invention is described for two kinds of situations respectively.
It is to be noted; below in an example, be specifically described using frequency band as the object of calibration measurement, concrete measuring object; namely the representation of the more specific location information of calibration information can adjust according to the actual needs, and such change does not affect protection scope of the present invention.
As shown in Figure 4, the schematic flow sheet of the antenna calibration method under a kind of embody rule scene proposed for the embodiment of the present invention.
In the present embodiment, base station triggers terminal equipment carries out calibration measurement and the feedback of a frequency band, and concrete processing procedure is as follows:
Step S401, each UE report self ability information to base station.
Namely each UE needs to report the measurement needed for whether supporting to calibrate and feedback.
The UE participating in antenna calibration, according to the ability information of each UE received, is selected in step S402, base station, and notifies that this UE participates in antenna calibration.
In concrete enforcement scene, base station selected UE can be that channel quality is good and the terminal that translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, the UE of following steps all refers to UE1, no longer repeat specification.
The parameters such as the frequency band of calibration measurement are carried out in step S403, base station by signal deployment UE.
Such as, configuration UE is measured on one section of continuous print PRB.
Concrete, the signaling configuring corresponding parameter can be high-level signaling, also can be that physical layer controls Sina.
Further, the pilot parameters in corresponding frequency band in this signaling, can also be comprised, as port number, the running time-frequency resource position etc. taken.
Step S404, base station are when needs terminal carries out calibration measurement and feedback, and triggered measurement and the feedback of UE by DCI signaling, wherein, base station issues this DCI signaling in the n-th subframe.
In the present embodiment, base station only has 1 to the frequency band that UE configures, and therefore, only needs 1 bit to indicate whether to trigger calibration measurement and feedback in DCI.
In the application scenarios of reality, in DCI, also comprise the resource allocation information of the up channel reported for calibration information, carry out the feedback of calibration parameter information to make UE according to corresponding resource allocation information.
In concrete enforcement scene; the parameter information of above-mentioned step S403 sends to UE together with may be incorporated in the DCI signaling of step S404; also independently UE can be sent to; in the present embodiment; after notifying that this UE participates in the message transmission of calibration; send corresponding parameter information and DCI signaling with the form of independent message respectively to UE, the change of concrete send mode does not affect protection scope of the present invention.
In concrete enforcement scene, toggle bit in DCI also may be used for SRS aperiodic triggered in corresponding band and sends, thus the actual of antenna calibration can be matched with the transmission of uplink SRS signal, reduce the time delay between twice measurement, improve the precision of calibration calculations.
Step S405, base station according to the configuration of step S403, send the signal needed for calibration to UE in the n-th+k subframe, as calibration pilot tone.
Wherein, k is the amount that base station notifies UE or the amount appointed in advance, namely mentioned in aforesaid step S302 Measuring Time parameter.
Step S406, UE, after As-received stands in the triggering DCI of the n-th subframe transmission, perform the measurement needed for calibration in the n-th+k subframe.
S405 and step S406 can find out in steps, and base station maintains consistent with the transmission time about calibration pilot signal in UE, i.e. the n-th+k subframe, and thus, the calibration pilot signal that UE can send according to base station carries out calibration measurement.
Step S407, UE after As-received stands in the triggering DCI that the n-th subframe sends, in the n-th+m subframe by the calibration parameter information feed back needed for calibration to base station.
Concrete, can the uplink channel resources of DCI instruction in step s 404 send.
Wherein, m is the amount that base station notifies UE or the amount appointed in advance, namely mentioned in aforesaid step S303 feedback time parameter.
The calibration parameter information that step S408, base station are fed back according to UE is calibrated antenna.
As shown in Figure 5, the schematic flow sheet of the antenna calibration method under a kind of embody rule scene proposed for the embodiment of the present invention.
In the present embodiment, base station triggers terminal equipment carries out calibration measurement and the feedback of multiple frequency band, and concrete processing procedure is as follows:
Step S501, each UE report self ability information to base station.
Namely each UE needs to report the measurement needed for whether supporting to calibrate and feedback.
The UE participating in antenna calibration, according to the ability information of each UE received, is selected in step S502, base station, and notifies that this UE participates in antenna calibration.
In concrete enforcement scene, base station selected UE can be that channel quality is good and the terminal that translational speed is low.
In the present embodiment, select UE1 to participate in antenna calibration, the UE of following steps all refers to UE1, no longer repeat specification.
The parameters such as the frequency band of calibration measurement are carried out in step S503, base station by signal deployment UE.
Such as, configuration UE is measured on one section of continuous print PRB.
Concrete, the signaling configuring corresponding parameter can be high-level signaling, also can be that physical layer controls Sina.
Further, the pilot parameters in corresponding frequency band in this signaling, can also be comprised, as port number, the running time-frequency resource position etc. taken.
In the present embodiment, base station configures to the quantity of the measurement frequency band of UE more than one, can have overlapping or without overlapping between cutting frequency band.
Step S504, base station are when needs terminal carries out calibration measurement and feedback, and triggered measurement and the feedback of UE by DCI signaling, wherein, base station issues this DCI signaling in the n-th subframe.
In the present embodiment, the frequency band that base station configures to UE is more than 1, therefore, multiple bit may be needed indicate whether in DCI to trigger calibration measurement and feedback, such as, if concentrating to the number of frequency bands of UE configuration is 4, then in DCI, multiple bit (such as: 2 bits) is needed to indicate UE to trigger measurement in which frequency band.
Moreover, if allow UE measure and feed back the calibration information in multiple frequency band, the mode of bitmap in DCI, then can be adopted to indicate corresponding frequency band the need of measurement and feedback.
In the application scenarios of reality, in DCI, also comprise the resource allocation information of the up channel reported for calibration information, carry out the feedback of calibration parameter information to make UE according to corresponding resource allocation information.
In concrete enforcement scene; the parameter information of above-mentioned step S503 sends to UE together with may be incorporated in the DCI signaling of step S504; also independently UE can be sent to; in the present embodiment; after notifying that this UE participates in the message transmission of calibration; send corresponding parameter information and DCI signaling with the form of independent message respectively to UE, the change of concrete send mode does not affect protection scope of the present invention.
In concrete enforcement scene, toggle bit in DCI also may be used for SRS aperiodic triggered in corresponding band and sends, thus the actual of antenna calibration can be matched with the transmission of uplink SRS signal, reduce the time delay between twice measurement, improve the precision of calibration calculations.
Step S505, base station are according to the configuration of step S503, send the calibration pilot signal of frequency band 1 to UE in the n-th+k1 subframe, send the calibration pilot signal of frequency band 2 to UE in the n-th+k2 subframe, in the n-th+k3 subframe, send the calibration pilot signal of frequency band 3 to UE, in the n-th+k4 subframe, send the calibration pilot signal of frequency band 4 to UE.
In the present embodiment, be described with the example that is measured as configuring 4 frequency bands, in the application scenarios of reality, the number of frequency bands configured, not as limit, can set according to the actual needs, and such change does not affect protection scope of the present invention.
Wherein, k1, k2, k3, k4 are the amount that base station notifies UE or the amount appointed in advance, namely mentioned in aforesaid step S302 Measuring Time parameter.
Step S506, UE, after As-received stands in the triggering DCI of the n-th subframe transmission, perform the measurement needed for calibration to frequency band 1, frequency band 2, frequency band 3 and frequency band 4 respectively in the n-th+k1, n+k2, n+k3, n+k4 subframe.
S505 and step S506 can find out in steps, base station maintains consistent with the transmission time about calibration pilot signal in UE, i.e. the n-th+k1, n+k2, n+k3, n+k4 subframe, thus, the calibration pilot signal that UE can send according to base station carries out calibration measurement.
Step S507, UE As-received stand in n-th subframe send triggering DCI after, respectively in the n-th+m1, n+m2, n+m3, n+m4 subframe by calibrate needed for calibration parameter information feed back to base station.
Concrete, can the uplink channel resources of DCI instruction in step S504 send.
Wherein, m1, m2, m3, m4 are the amount that base station notifies UE or the amount appointed in advance, namely mentioned in aforesaid step S303 feedback time parameter.
Concrete, can k1=k2=k3 be had ... ,=k4, also can have m1=m2=m3=m4.
The calibration parameter information that step S508, base station are fed back according to UE is calibrated antenna.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, calibration measurement and feedback is carried out by Trigger message triggering terminal equipment by base station, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back in corresponding resource, antenna calibration is carried out according to feedback information to make base station, thus base station can control the opportunity with calibration measurement flexibly by Trigger message, improve the precision of calibration operation and control flexibility ratio.
In order to realize the technical scheme of the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of base station, and its structural representation as shown in Figure 6, at least comprises:
Trigger module 61, during for carrying out calibration measurement and feedback at needs terminal equipment, sends Trigger message to described terminal equipment;
Sending module 62, for notifying the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and Measuring Time parameter, corresponding subframe sends calibration pilot signal to described terminal equipment;
Receiver module 63, for according to feedback time parameter, corresponding subframe receives the calibration parameter information of described terminal equipment feedback;
Calibration module 64, carries out antenna calibration for the calibration parameter information received by described receiver module 63.
In concrete enforcement scene,
Described receiver module 63, also for described sending module 62 to terminal equipment send calibration pilot tone before, receive the ability information of self that described terminal equipment reports;
Described sending module 62, also for the ability information of each terminal equipment received by described receiver module 63, determines that described terminal equipment participates in calibration, and sends corresponding notification message to described terminal equipment.
On the other hand, described trigger module 61, specifically for:
The down physical layer control signal that triggering terminal equipment carries out calibration measurement or feedback is sent to described terminal equipment;
Wherein, when the pre-configured described terminal equipment in described base station carries out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal, when the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
Further, described trigger module 61, also for passing through high-level signaling, or physical layer control signal sends the frequency band parameters of calibration measurement to described terminal equipment;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
In the application scenarios of reality, described Measuring Time parameter and feedback time parameter, be specially the fixed value that described base station and described terminal equipment are made an appointment, or described base station informs the parameter information of described terminal equipment by configuration messages;
Wherein, to send the frequency band parameters of multiple frequency band to described terminal equipment at described sending module 62 before, described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter, or described sending module 62 is by sending configuration messages to described terminal equipment, notifies the Measuring Time parameter corresponding to each frequency band of described terminal equipment and feedback time parameter respectively.
Further, the embodiment of the present invention also proposed a kind of terminal equipment, and its structural representation as shown in Figure 7, at least comprises:
Receiver module 71, for receiving the Trigger message that base station sends, and the positional information of calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter that described base station is pre-configured, corresponding subframe receives the calibration pilot signal that described base station sends;
Determination module 72, for the calibration pilot signal determination calibration parameter information received by described receiver module 71;
Sending module 73, for according to the pre-configured feedback time parameter in described base station, corresponding subframe reports the determined calibration parameter information of described determination module 72 to described base station, carries out antenna calibration to make described base station according to described calibration parameter information.
In the application scenarios of reality,
Described sending module 73, also for receive at described receiver module 71 base station send trigger message before, the ability information of the described terminal equipment reported to described base station;
Described receiver module 71, the described terminal equipment of confirmation also sent for receiving described base station participates in the notification message of calibration.
On the other hand, described receiver module 71, also for:
The described terminal equipment of triggering receiving the transmission of described base station carries out the down physical layer control signal of calibration measurement or feedback;
Wherein, when the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal, when the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
It is pointed out that described receiver module 71, also for:
Receive described base station by high-level signaling, or the frequency band parameters of the calibration measurement of physical layer control signal transmission;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
Further, described Measuring Time parameter and feedback time parameter, be specially the fixed value that described base station and described terminal equipment are made an appointment, or the configuration messages that described terminal equipment sends according to the described base station received, determined corresponding parameter information;
Wherein, receive the frequency band parameters of multiple frequency bands that described base station sends at described receiver module 71 before, described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter, or the configuration messages that described receiver module 71 sends by receiving described base station, determine the Measuring Time parameter corresponding to each frequency band and feedback time parameter respectively.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, calibration measurement and feedback is carried out by Trigger message triggering terminal equipment by base station, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back in corresponding resource, antenna calibration is carried out according to feedback information to make base station, thus base station can control the opportunity with calibration measurement flexibly by Trigger message, improve the precision of calibration operation and control flexibility ratio.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present 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 and perform each method implementing described in scene of the embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram preferably implementing scene, the module in accompanying drawing or flow process might not be that the enforcement embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device implemented in scene can carry out being distributed in the device of enforcement scene according to implementing scene description, also can carry out respective change and being arranged in the one or more devices being different from this enforcement scene.The module of above-mentioned enforcement scene can merge into a module, also can split into multiple submodule further.
The invention described above embodiment sequence number, just to describing, does not represent the quality implementing scene.
Be only the several concrete enforcement scene of the embodiment of the present invention above, but the embodiment of the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into the business limited field of the embodiment of the present invention.
Claims (29)
1. an antenna calibration method, is characterized in that, at least comprises the following steps:
Base station sends Trigger message to terminal equipment;
Described base station notifies the positional information of described terminal equipment calibration pilot signal;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter, and corresponding subframe sends calibration pilot signal to described terminal equipment;
Described base station, according to feedback time parameter, corresponding subframe receives the calibration parameter information of described terminal equipment feedback;
Antenna calibration is carried out according to described calibration parameter information in described base station;
Wherein, described base station sends Trigger message to described terminal equipment, is specially:
Described base station sends to described terminal equipment the down physical layer control signal that triggering terminal equipment carries out calibration measurement or feedback;
Wherein, when the pre-configured described terminal equipment in described base station carries out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal;
When the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
2. the method for claim 1, is characterized in that, described base station also comprises before sending calibration pilot tone to terminal equipment:
Described base station receives the ability information of self that described terminal equipment reports;
Described base station, according to the ability information of each terminal equipment received, determines that described terminal equipment participates in calibration, and sends the notification message confirming described terminal equipment participation calibration to described terminal equipment.
3. the method for claim 1, is characterized in that,
When the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, the mode of bitmap in described down physical layer control signal, is adopted to indicate corresponding frequency band to measure the need of carrying out and feed back.
4. method as claimed in claim 3, is characterized in that, in described down physical layer control signal, also comprise:
The resource allocation information of the up channel of calibration parameter information reporting.
5. the method for claim 1, is characterized in that, described down physical layer control signal, also for trigger in corresponding band aperiodic SRS transmission.
6. the method for claim 1, is characterized in that, the described positional information notifying described terminal equipment calibration pilot signal, is specially:
Described base station is by high-level signaling, or physical layer control signal sends the frequency band parameters of calibration measurement to described terminal equipment;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
7. method as claimed in claim 6, it is characterized in that, described frequency band parameters, at least comprises:
Resource location information shared by described frequency band, described resource location information can be continuous print, also can be discontinuous.
8. method as claimed in claim 6, is characterized in that, also comprise:
Described base station is by high-level signaling, or physical layer control signal sends the pilot parameters in the frequency band corresponding to the frequency band parameters of described calibration measurement to described terminal equipment.
9. the method for claim 1, is characterized in that, described Measuring Time parameter and feedback time parameter, be specially:
The fixed value that described base station and described terminal equipment are made an appointment; Or,
Described base station informs the parameter information of described terminal equipment by configuration messages.
10. the method as described in claim 6 or 9, is characterized in that, described base station also comprises before sending the frequency band parameters of multiple frequency band to described terminal equipment:
Described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter; Or,
Described base station, by sending configuration messages to described terminal equipment, notifies the Measuring Time parameter corresponding to each frequency band of described terminal equipment and feedback time parameter respectively.
11. the method for claim 1, is characterized in that, described method, specifically comprises:
Described base station sends Trigger message to described terminal equipment in the n-th subframe;
Described base station notifies the positional information of described terminal equipment calibration pilot signal;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter k, and the n-th+k subframe sends calibration pilot signal to described terminal equipment;
Described base station, according to feedback time parameter m, the n-th+m subframe receives the calibration parameter information of described terminal equipment feedback;
Antenna calibration is carried out according to described calibration parameter information in described base station;
Wherein, the value of m is greater than the value of k.
12. 1 kinds of base stations, is characterized in that, at least comprise:
Trigger module, for sending Trigger message to terminal equipment;
Sending module, for notifying the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and Measuring Time parameter, corresponding subframe sends calibration pilot signal to described terminal equipment;
Receiver module, for according to feedback time parameter, corresponding subframe receives the calibration parameter information of described terminal equipment feedback;
Calibration module, carries out antenna calibration for the calibration parameter information received by described receiver module;
Wherein, described trigger module, specifically for:
The down physical layer control signal that triggering terminal equipment carries out calibration measurement or feedback is sent to described terminal equipment;
Wherein, when the pre-configured described terminal equipment in described base station carries out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal, when the pre-configured described terminal equipment in described base station carries out the measurement of multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
13. base stations as claimed in claim 12, is characterized in that,
Described receiver module, also for described sending module to terminal equipment send calibration pilot tone before, receive the ability information of self that described terminal equipment reports;
Described sending module, also for the ability information of each terminal equipment received by described receiver module, determines that described terminal equipment participates in calibration, and sends corresponding notification message to described terminal equipment.
14. base stations as claimed in claim 12, is characterized in that, described trigger module, and also for passing through high-level signaling, or physical layer control signal sends the frequency band parameters of calibration measurement to described terminal equipment;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
15. base stations as claimed in claim 12, it is characterized in that, described Measuring Time parameter and feedback time parameter, be specially:
The fixed value that described base station and described terminal equipment are made an appointment, or described base station informs the parameter information of described terminal equipment by configuration messages;
Wherein, before described sending module sends the frequency band parameters of multiple frequency band to described terminal equipment, described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter, or described sending module is by sending configuration messages to described terminal equipment, notifies the Measuring Time parameter corresponding to each frequency band of described terminal equipment and feedback time parameter respectively.
16. 1 kinds of antenna calibration methods, is characterized in that, at least comprise the following steps:
Terminal equipment receives the Trigger message that base station sends;
Described terminal equipment receives the positional information of the calibration pilot signal that described base station sends;
Described terminal equipment is according to the positional information of described calibration pilot signal, and Measuring Time parameter, and corresponding subframe receives the calibration pilot signal that described base station sends;
Described terminal equipment is according to described calibration pilot signal determination calibration parameter information;
Described terminal equipment, according to feedback time parameter, corresponding subframe reports described calibration parameter information to described base station, carries out antenna calibration to make described base station according to described calibration parameter information;
Wherein, described terminal equipment receives the Trigger message that described base station sends, and is specially:
Described terminal equipment receives the described terminal equipment of triggering that described base station sends and carries out the down physical layer control signal of calibration measurement or feedback;
Wherein, when the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal;
When the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
17. methods as claimed in claim 16, is characterized in that, described terminal equipment also comprises before receiving the Trigger message of described base station transmission:
The ability information of self that described terminal equipment reports to described base station;
Described terminal equipment receives the notification message of confirmation self the participation calibration that described base station sends.
18. methods as claimed in claim 16, is characterized in that,
When the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out multiple frequency band, the mode of bitmap in described down physical layer control signal, is adopted to indicate corresponding frequency band to measure the need of carrying out and feed back.
19. methods as claimed in claim 16, is characterized in that, in described down physical layer control signal, also comprise:
The resource allocation information of the up channel of calibration parameter information reporting.
20. methods as claimed in claim 16, is characterized in that, described terminal equipment receives the positional information of calibration pilot signal, is specially:
Described terminal equipment receives described base station by high-level signaling, or the frequency band parameters of the calibration measurement of physical layer control signal transmission;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
21. methods as claimed in claim 19, it is characterized in that, described frequency band parameters, at least comprises:
Resource location information shared by described frequency band, described resource location information can be continuous print, also can be discontinuous.
22. methods as claimed in claim 20, is characterized in that, also comprise:
Described terminal equipment receives described base station by high-level signaling, or the pilot parameters in the frequency band corresponding to frequency band parameters of the described calibration measurement of physical layer control signal transmission.
23. methods as claimed in claim 16, it is characterized in that, described Measuring Time parameter and feedback time parameter, be specially:
The fixed value that described base station and described terminal equipment are made an appointment; Or,
The configuration messages that described terminal equipment sends according to the described base station received, determined corresponding parameter information.
24. methods as described in claim 16 or 23, is characterized in that, described terminal equipment also comprises before receiving the frequency band parameters of multiple frequency bands that described base station sends:
Described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter; Or,
The configuration messages that described terminal equipment sends by receiving described base station, determines the Measuring Time parameter corresponding to each frequency band and feedback time parameter respectively.
25. methods as claimed in claim 16, it is characterized in that, described method, specifically comprises:
Terminal equipment receives the Trigger message of base station transmission in the n-th subframe;
Described terminal equipment receives the positional information of the calibration pilot signal that described base station sends;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the Measuring Time parameter k that described base station is pre-configured, and the n-th+k subframe receives the calibration pilot signal that described base station sends;
Described terminal equipment is according to described calibration pilot signal determination calibration parameter information;
Described terminal equipment, according to the pre-configured feedback time parameter m in described base station, the n-th+m subframe reports described calibration parameter information to described base station, carries out antenna calibration to make described base station according to described calibration parameter information;
Wherein, the value of m is greater than the value of k.
26. 1 kinds of terminal equipments, is characterized in that, at least comprise:
Receiver module, for receiving the Trigger message that base station sends, and the positional information of calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter that described base station is pre-configured, corresponding subframe receives the calibration pilot signal that described base station sends;
Determination module, for the calibration pilot signal determination calibration parameter information received by described receiver module;
Sending module, for according to the pre-configured feedback time parameter in described base station, corresponding subframe reports the determined calibration parameter information of described determination module to described base station, carries out antenna calibration to make described base station according to described calibration parameter information;
Wherein, described receiver module, also for:
The described terminal equipment of triggering receiving the transmission of described base station carries out the down physical layer control signal of calibration measurement or feedback;
Wherein, when the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in described down physical layer control signal, when the information that the described base station that described terminal equipment receives is pre-configured is the measurement carrying out multiple frequency band, indicate whether to carry out calibration measurement and feedback by multiple bit in described down physical layer control signal.
27. terminal equipments as claimed in claim 26, is characterized in that,
Described sending module, also for before the trigger message of described receiver module reception base station transmission, the ability information of the described terminal equipment reported to described base station;
Described receiver module, the described terminal equipment of confirmation also sent for receiving described base station participates in the notification message of calibration.
28. terminal equipments as claimed in claim 26, is characterized in that, described receiver module, also for:
Receive described base station by high-level signaling, or the frequency band parameters of the calibration measurement of physical layer control signal transmission;
Wherein, the frequency band parameters of described calibration measurement, is specially the frequency band parameters of a frequency band, or the frequency band parameters of multiple frequency band.
29. terminal equipments as claimed in claim 26, it is characterized in that, described Measuring Time parameter and feedback time parameter, be specially:
The fixed value that described base station and described terminal equipment are made an appointment, or the configuration messages that described terminal equipment sends according to the described base station received, determined corresponding parameter information;
Wherein, receive the frequency band parameters of multiple frequency bands that described base station sends at described receiver module before, described base station and described terminal equipment make an appointment multiple fixed value respectively as the Measuring Time parameter corresponding to each frequency band and feedback time parameter, or the configuration messages that described receiver module sends by receiving described base station, determine the Measuring Time parameter corresponding to each frequency band and feedback time parameter respectively.
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| CN201110231334.6A CN102237908B (en) | 2011-08-12 | 2011-08-12 | Data transmission method and equipment |
| PCT/CN2012/079647 WO2013023534A1 (en) | 2011-08-12 | 2012-08-03 | Method and device for data transmission |
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| CN102237908B (en) * | 2011-08-12 | 2014-12-17 | 电信科学技术研究院 | Data transmission method and equipment |
| CN103298119B (en) * | 2012-02-29 | 2016-04-06 | 电信科学技术研究院 | A kind of instruction of running time-frequency resource and confirmation method and device |
| CN106413107B (en) * | 2015-07-28 | 2019-10-18 | 华为技术有限公司 | A kind of control signal sending, receiving method and equipment |
| CN107124753B (en) * | 2017-07-01 | 2020-06-02 | 国仪行云(合肥)教育科技有限公司 | Bidirectional communication method for wireless terminal |
| CN109429338B (en) * | 2017-08-24 | 2024-03-05 | 株式会社电装 | Band indication method, band determination method, transmitting terminal device, and receiving terminal device |
| CN111917492B (en) * | 2019-05-09 | 2023-03-28 | 中国移动通信有限公司研究院 | Calibration method, network equipment and terminal equipment |
| WO2021217595A1 (en) * | 2020-04-30 | 2021-11-04 | 北京小米移动软件有限公司 | Data transmission processing method and device, communication apparatus, and storage medium |
| CN115918010A (en) | 2020-06-24 | 2023-04-04 | 瑞典爱立信有限公司 | Method and apparatus for antenna calibration |
| CN113950084A (en) * | 2021-10-20 | 2022-01-18 | 国网北京市电力公司 | Calibration method of base station, device thereof, computer readable storage medium and processor |
| CN116132006A (en) * | 2021-11-15 | 2023-05-16 | 大唐移动通信设备有限公司 | Antenna calibration method, device, apparatus and storage medium |
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| SE509782C2 (en) * | 1997-07-29 | 1999-03-08 | Ericsson Telefon Ab L M | Method and apparatus for antenna calibration and their use in a radio communication system |
| JP4562542B2 (en) * | 2005-02-15 | 2010-10-13 | 三洋電機株式会社 | CALIBRATION METHOD AND BASE STATION DEVICE, TERMINAL DEVICE, AND RADIO DEVICE USING THE SAME |
| CN101500248B (en) * | 2008-01-31 | 2011-02-02 | 大唐移动通信设备有限公司 | Antenna calibration method and apparatus |
| GB2467773B (en) * | 2009-02-13 | 2012-02-01 | Socowave Technologies Ltd | Communication system, apparatus and methods for calibrating an antenna array |
| CN102075298B (en) * | 2009-11-19 | 2014-04-30 | 华为技术有限公司 | Method for transmitting detection signal by using user equipment (UE), UE and base station |
| CN102149123B (en) * | 2011-04-15 | 2013-12-04 | 北京邮电大学 | Scheme and device for calibrating antennae among base stations in cooperative multi-point system and base station |
| CN102237908B (en) * | 2011-08-12 | 2014-12-17 | 电信科学技术研究院 | Data transmission method and equipment |
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