CN102237908A - Data transmission method and equipment - Google Patents
Data transmission method and equipment Download PDFInfo
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- CN102237908A CN102237908A CN2011102313346A CN201110231334A CN102237908A CN 102237908 A CN102237908 A CN 102237908A CN 2011102313346 A CN2011102313346 A CN 2011102313346A CN 201110231334 A CN201110231334 A CN 201110231334A CN 102237908 A CN102237908 A CN 102237908A
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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
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 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 Transmission, 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 equipments 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 prior art does not have suitable solution for antenna calibration.
Summary of the invention
The embodiment of the invention provides a kind of data transmission 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:
When the base station needed terminal equipment to carry out calibration measurement and feedback, described base station sent to described terminal equipment and triggers message;
The positional information of described terminal equipment calibration pilot signal is notified in described base station;
Described base station is according to the positional information of described calibration pilot signal, and the Measuring Time parameter, sends calibration pilot signal to described terminal equipment on corresponding subframe;
Described base station receives the calibration parameter information of described terminal equipment feedback according to the feedback time parameter on corresponding subframe;
Antenna calibration is carried out according to described calibration parameter information in described base station.
On the other hand, the embodiment of the invention also provides a kind of base station, comprises at least:
Trigger module is used for when the needs terminal equipment carries out calibration measurement and feedback, sends to described terminal equipment and triggers message;
Sending module is used to notify the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter, on corresponding subframe, send calibration pilot signal to described terminal equipment;
Receiver module is used for according to the feedback time parameter, receives the calibration parameter information of described terminal equipment feedback on corresponding subframe;
Calibration module is used for carrying out antenna calibration according to the received calibration parameter information of described receiver module.
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 triggering message that the base station sends;
Described terminal equipment receives the positional information of the calibration pilot signal of described base station transmission;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the pre-configured Measuring Time parameter in described base station, receives the calibration pilot signal that described base station sends on corresponding subframe;
Described terminal equipment is determined calibration parameter information according to described calibration pilot signal;
Described terminal equipment reports described calibration parameter information to described base station, so that antenna calibration is carried out according to described calibration parameter information in described base station according to the pre-configured feedback time parameter in described base station on corresponding subframe.
On the other hand, the embodiment of the invention also provides a kind of terminal equipment, comprises at least:
Receiver module, be used to receive the triggering message that the base station sends, and the positional information of calibration pilot signal, and according to the positional information of described calibration pilot signal, and the pre-configured Measuring Time parameter in described base station, on corresponding subframe, receive the calibration pilot signal that described base station sends;
Determination module is used for determining calibration parameter information according to the received calibration pilot signal of described receiver module;
Sending module is used for according to the pre-configured feedback time parameter in described base station, reports the determined calibration parameter information of described determination module to described base station on corresponding subframe, so that antenna calibration is carried out according to described calibration parameter information in described base station.
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, carry out calibration measurement and feedback by the base station by triggering the message trigger terminal equipment, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back on corresponding resource, so that antenna calibration is carried out according to feedback information in the base station, thereby the base station can message be controlled flexibly and the opportunity of calibration measurement by triggering, and improves the precision and the control flexibility ratio of calibration operation.
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 the schematic flow sheet of the antenna calibration method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 6 is the structural representation of a kind of base station of embodiment of the invention proposition;
Fig. 7 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 the performance of system.
In order to overcome such defective, the embodiment of the invention has proposed a kind of antenna calibration method, carries out calibration measurement and feedback by the base station by the mode triggering terminal equipment that triggers message, thereby, realization improves the precision of calibration for the flexible control of the reality of calibration measurement.
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 to described terminal equipment and trigger message.
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.
In concrete enforcement scene, send the flow process that triggers message in this step, be specially the base station and send the down physical layer control signaling that triggering terminal equipment carries out calibration measurement or feedback to described terminal equipment.
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 the described down physical layer control signaling;
When the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, indicate corresponding frequency band whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
Further, when the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, adopt the mode of bitmap to indicate frequency band corresponding whether to need to measure and feed back in the described down physical layer control signaling.
Terminal equipment on the other hand, in the described down physical layer control signaling, also comprises the resource allocation information of the up channel that calibration parameter information reports, so that can carry out the feedback of calibration parameter information on corresponding resource.
In concrete enforcement scene, described down physical layer control signaling, also be used to trigger on the corresponding band aperiodic SRS transmission, by with the cooperating of SRS aperiodic, can reduce the time delay between twice measurement, improve the precision of calibration calculations.
The positional information of described terminal equipment calibration pilot signal is notified in step S302, described base station.
Be notified to the positional information of the calibration pilot signal of terminal equipment in this step, be specially the base station and pass through high-level signaling, or physical layer control signaling sends the frequency band parameter of calibration measurement to described terminal equipment, wherein, the frequency band parameter of described calibration measurement, be specially the frequency band parameter of a frequency band, or the frequency band parameter of a plurality of frequency bands.
In concrete application scenarios, described frequency band parameter comprises the resource location information that described frequency band is shared at least, and described resource location information can be continuous, also can be discontinuous, and for example, configurating terminal device is measured on one section continuous PRB.
In concrete enforcement scene, described base station is specifically by high-level signaling, or the pilot tone parameter of physical layer control signaling in described terminal equipment sends the pairing frequency band of frequency band parameter of described calibration measurement, port number for example, the running time-frequency resource position that takies etc.
In the application scenarios of reality; above-mentioned step S301 and step S302 do not have inevitable time order and function relation, and, may be incorporated in a piece of news and send; also can be 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 the Measuring Time parameter, send calibration pilot signal to described terminal equipment on corresponding subframe.
Step S304, described base station receive the calibration parameter information of described terminal equipment feedback according to the feedback time parameter on corresponding subframe.
Measuring Time parameter in two above steps and feedback time parameter were all finished configuration before step S302 and step S304 enforcement, concrete configuration mode comprises two kinds:
(1) default fixed value, promptly the fixed value of making an appointment with described base station and described terminal equipment is as relevant parameters.
(2) by message informing, promptly be notified to the parameter information of described terminal equipment as relevant parameters by configuration messages with described base station.
After finishing the relevant parameters configuration, relevant parameters information is used to make the base station with the terminal equipment both sides sequential of carrying out verification measurement and feedback to be had identical configuration, thereby, can carry out the transmission of calibration pilot signal and the feedback of calibration parameter information in corresponding sequential position.
In concrete enforcement scene, corresponding Measuring Time parameter and feedback time parameter can be that calculate on the basis to receive the time (for example subframe position) of triggering message, thereby determine the time of reception of concrete calibration information and the feedback time of calibration parameter information, wherein, for the normal feedback of calibration parameter information, the position of corresponding feedback time or feedback calibration parameter information should be later than time or the position that receives calibration pilot signal.
Calibration pilot signal can be CSI-RS, CRS, and DMRS also can be newly-designed pilot signal.
Need be pointed out that further that in the operation of reality, if in step S301, the base station need send the frequency band parameter of a plurality of frequency bands to terminal equipment, so, the processing that need fulfil ahead of schedule also comprises:
Described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter; Or,
Described base station is notified pairing Measuring Time parameter of each frequency band of described terminal equipment and feedback time parameter respectively by sending configuration messages to described terminal equipment.
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:
The base station sends triggering message to described terminal equipment on n subframe;
The positional information of described terminal equipment calibration pilot signal is notified in described base station;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter k, sends calibration pilot signal to described terminal equipment on n+k subframe;
Described base station receives the calibration parameter information of described terminal equipment feedback according to the feedback time parameter m on n+m subframe;
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, then be to receive the triggering message that the base station sends, and according to the positional information of corresponding calibration pilot signal, receive the calibration information that the base station sends in corresponding position, carrying out the feedback of corresponding calibration parameter information with the feedback time of base station agreement then, thereby, cooperate the base station to finish antenna calibration, the reception calibration information wherein and the time of feedback calibration parameter information are calculated on the basis that receives the moment of triggering message and determine all according to the pre-configured corresponding time parameter information in base station, concrete handling process is referring to 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 triggering message that the base station sends n subframe;
Terminal equipment receives the positional information of the calibration pilot signal of base station transmission;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the pre-configured Measuring Time parameter k in described base station, receives the calibration pilot signal that described base station sends on n+k subframe;
Described terminal equipment is determined calibration parameter information according to described calibration pilot signal;
Described terminal equipment reports described calibration parameter information to described base station according to the pre-configured feedback time parameter m in described base station on n+m subframe, so that 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.
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, carry out calibration measurement and feedback by the base station by triggering the message trigger terminal equipment, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back on corresponding resource, so that antenna calibration is carried out according to feedback information in the base station, thereby the base station can message be controlled flexibly and the opportunity of calibration measurement by triggering, and improves the precision and the control flexibility ratio of calibration operation.
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, come control terminal whether to carry out calibration measurement and feedback by the triggering message that the base station sends, and corresponding calibration measurement and time feedback then carry out according to the default unified sequential in base station and terminal equipment both sides.
For convenience of description; subsequent embodiment of the present invention specifically describes as the concrete example that triggers message with DCI information; 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 invention proposes, and such variation does not influence protection scope of the present invention.
Further, be directed to the difference that the base station triggers terminal equipment carries out one or more measurements, subsequent embodiment of the present invention describes at two kinds of situations respectively.
It is to be noted; in following embodiment, specifically describe concrete measuring object with the object of frequency band as calibration measurement; the expression mode that is the more specific location information of calibration information can be adjusted according to the actual needs, and such variation does not influence protection scope of the present invention.
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, the base station triggers terminal equipment carries out the calibration measurement and the feedback of a frequency band, and 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.
The parameters such as frequency band of calibration measurement are carried out in step S403, base station by the signaling configuration UE.
For example, configuration UE is measured on one section continuous PRB.
Concrete, the signaling of configuration relevant parameters can be a high-level signaling, also can be physical layer control Sina.
Further, can also comprise the pilot tone parameter in the corresponding frequency band in this signaling, as port number, the running time-frequency resource position that takies etc.
When calibration measurement and feedback were carried out in the needs terminal in step S404, base station, by measurement and the feedback of DCI signaling triggering UE, wherein, the base station issued this DCI signaling n subframe.
In the present embodiment, the base station has only 1 to the frequency band of UE configuration, therefore, only needs 1 bit to indicate whether to trigger calibration measurement and feedback among the DCI.
In the application scenarios of reality, also comprise the resource allocation information that is used for the up channel that calibration information reports among the DCI, so that UE carries out the feedback of calibration parameter information according to corresponding resource allocation information.
In concrete enforcement scene; the DCI signaling of the parameter information of above-mentioned step S403 and step S404 may be incorporated in and sends to UE together; also can independently send to UE respectively; in the present embodiment; be after the message of notifying this UE to participate in calibration sends; form with independent message sends relevant parameters information and DCI signaling to UE respectively, and the variation of concrete send mode does not influence protection scope of the present invention.
In concrete enforcement scene, SRS aperiodic that triggering bit among the DCI also can be used to trigger on the corresponding band sends, thereby 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 required signal of calibration to UE in n+k subframe, as the calibration pilot tone.
Wherein, k is the amount of base station notice UE or the amount of appointing in advance, mentioned Measuring Time parameter among the promptly aforesaid step S302.
Step S406, UE carry out the required measurement of calibration in n+k subframe after As-received stands in the triggering DCI of n subframe transmission.
In steps S405 and step S406 as can be seen, the transmission time about calibration pilot signal among base station and the UE has kept consistent, i.e. n+k subframe, thus, UE can carry out calibration measurement according to the calibration pilot signal that the base station sends.
Step S407, UE will calibrate required calibration parameter feedback information and give the base station after As-received stands in the triggering DCI of n subframe transmission in n+m subframe.
Concrete, can on the uplink channel resources of the indication of the DCI among the step S404, send.
Wherein, m is the amount of base station notice UE or the amount of appointing in advance, mentioned feedback time parameter among the promptly aforesaid step S303.
Calibrate antenna according to the calibration parameter information of UE feedback step S408, base station.
As shown in Figure 5, 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, the base station triggers terminal equipment carries out the calibration measurement and the feedback of a plurality of frequency bands, and concrete processing procedure is as follows:
Step S501, 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 S502, 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.
The parameters such as frequency band of calibration measurement are carried out in step S503, base station by the signaling configuration UE.
For example, configuration UE is measured on one section continuous PRB.
Concrete, the signaling of configuration relevant parameters can be a high-level signaling, also can be physical layer control Sina.
Further, can also comprise the pilot tone parameter in the corresponding frequency band in this signaling, as port number, the running time-frequency resource position that takies etc.
In the present embodiment, base station configuration gives the quantity of measurement frequency band of UE more than one, can have between the cutting frequency band to overlap or do not have overlapping.
When calibration measurement and feedback were carried out in the needs terminal in step S504, base station, by measurement and the feedback of DCI signaling triggering UE, wherein, the base station issued this DCI signaling n subframe.
In the present embodiment, the base station to the frequency band of UE configuration more than 1, therefore, may need a plurality of bits to indicate whether to trigger calibration measurement and feedback among the DCI, for example, if concentrating the number of frequency bands to the UE configuration is 4, then in DCI, need a plurality of bits (for example: 2 bits) indicate UE to trigger measurement in which frequency band.
Moreover, if allow the UE measurement and feed back the interior calibration information of a plurality of frequency bands, then can adopt the mode of bitmap to indicate frequency band corresponding whether to need to measure and feedback among the DCI.
In the application scenarios of reality, also comprise the resource allocation information that is used for the up channel that calibration information reports among the DCI, so that UE carries out the feedback of calibration parameter information according to corresponding resource allocation information.
In concrete enforcement scene; the DCI signaling of the parameter information of above-mentioned step S503 and step S504 may be incorporated in and sends to UE together; also can independently send to UE respectively; in the present embodiment; be after the message of notifying this UE to participate in calibration sends; form with independent message sends relevant parameters information and DCI signaling to UE respectively, and the variation of concrete send mode does not influence protection scope of the present invention.
In concrete enforcement scene, SRS aperiodic that triggering bit among the DCI also can be used to trigger on the corresponding band sends, thereby 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, in n+k1 subframe, send the calibration pilot signal of frequency band 1 to UE, in n+k2 subframe, send the calibration pilot signal of frequency band 2 to UE, in n+k3 subframe, send the calibration pilot signal of frequency band 3, in n+k4 subframe, send the calibration pilot signal of frequency band 4 to UE to UE.
In the present embodiment, describe with the example that is measured as that disposes 4 frequency bands, in the application scenarios of reality, the number of frequency bands that is disposed can be set according to the actual needs not as limit, and such variation does not influence protection scope of the present invention.
Wherein, k1, k2, k3, k4 are the amount of base station notice UE or the amount of appointing in advance, mentioned Measuring Time parameter among the promptly aforesaid step S302.
Step S506, UE carry out the required measurement of calibration to frequency band 1, frequency band 2, frequency band 3 and frequency band 4 respectively in n+k1, n+k2, n+k3, a n+k4 subframe after As-received stands in the triggering DCI of n subframe transmission.
S505 and step S506 are as can be seen in steps, transmission time about calibration pilot signal among base station and the UE has kept consistent, i.e. n+k1, n+k2, n+k3, a n+k4 subframe, thus, UE can carry out calibration measurement according to the calibration pilot signal that the base station sends.
Step S507, UE will calibrate required calibration parameter feedback information respectively and give the base station after As-received stands in the triggering DCI of n subframe transmission in n+m1, n+m2, n+m3, a n+m4 subframe.
Concrete, can on the uplink channel resources of the indication of the DCI among the step S504, send.
Wherein, m1, m2, m3, m4 are the amount of base station notice UE or the amount of appointing in advance, mentioned feedback time parameter among the promptly aforesaid step S303.
Concrete, k1=k2=k3 can be arranged ... ,=k4 also can have m1=m2=m3=m4.
Calibrate antenna according to the calibration parameter information of UE feedback step S508, base station.
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, carry out calibration measurement and feedback by the base station by triggering the message trigger terminal equipment, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back on corresponding resource, so that antenna calibration is carried out according to feedback information in the base station, thereby the base station can message be controlled flexibly and the opportunity of calibration measurement by triggering, and improves the precision and the control flexibility ratio of calibration operation.
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 6 at least:
Sending module 62 is used to notify the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter, on corresponding subframe, send calibration pilot signal to described terminal equipment;
In concrete enforcement scene,
Described receiver module 63 also was used at described sending module 62 before terminal equipment sends the calibration pilot tone, self the ability information that receives that described terminal equipment reports;
Described sending module 62 also is used for the ability information according to each received terminal equipment of 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 is used for:
Send the down physical layer control signaling that triggering terminal equipment carries out calibration measurement or feedback 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 the described down physical layer control signaling, when the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
Further, described trigger module 61 also is used for by high-level signaling, or physical layer control signaling sends the frequency band parameter of calibration measurement to described terminal equipment;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
In the application scenarios of reality, described Measuring Time parameter and feedback time parameter are specially the fixed value that described base station and described terminal equipment are made an appointment, or described base station is notified to the parameter information of described terminal equipment by configuration messages;
Wherein, before described sending module 62 sends the frequency band parameter of a plurality of frequency bands to described terminal equipment, described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter, or described sending module 62 is notified pairing Measuring Time parameter of each frequency band of described terminal equipment and feedback time parameter respectively by sending configuration messages to described terminal equipment.
Further, the embodiment of the invention has also proposed a kind of terminal equipment, and its structural representation comprises as shown in Figure 7 at least:
Sending module 73 is used for according to the pre-configured feedback time parameter in described base station, reports described determination module 72 determined calibration parameter information to described base station on corresponding subframe, so that antenna calibration is carried out according to described calibration parameter information in described base station.
In the application scenarios of reality,
Described sending module 73 also was used for before described receiver module 71 receives the trigger message that base stations send, the ability information of the described terminal equipment that reports to described base station;
Described receiver module 71 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 71 also is used for:
The described terminal equipment of triggering that receives the transmission of described base station carries out the down physical layer control signaling of calibration measurement or feedback;
Wherein, when the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in the described down physical layer control signaling, when the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
It is pointed out that described receiver module 71, also be used for:
Receive described base station by high-level signaling, or the frequency band parameter of the calibration measurement of physical layer control signaling transmission;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
Further, described Measuring Time parameter and feedback time parameter are specially the fixed value that described base station and described terminal equipment are made an appointment, or described terminal equipment is according to the configuration messages of the described base station transmission that receives, determined relevant parameters information;
Wherein, receive at described receiver module 71 before the frequency band parameter of a plurality of frequency bands that described base station sends, described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter, or described receiver module 71 is determined pairing Measuring Time parameter of each frequency band and feedback time parameter respectively by receiving the configuration messages that described base station sends.
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, carry out calibration measurement and feedback by the base station by triggering the message trigger terminal equipment, and notify the positional information of corresponding calibration information, terminal equipment carries out calibration measurement according to fixing sequential and feeds back on corresponding resource, so that antenna calibration is carried out according to feedback information in the base station, thereby the base station can message be controlled flexibly and the opportunity of calibration measurement by triggering, and improves the precision and the control flexibility ratio of calibration operation.
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 (35)
1. an antenna calibration method is characterized in that, may further comprise the steps at least:
The base station sends to terminal equipment and triggers message;
The positional information of described terminal equipment calibration pilot signal is notified in described base station;
Described base station is according to the positional information of described calibration pilot signal, and the Measuring Time parameter, sends calibration pilot signal to described terminal equipment on corresponding subframe;
Described base station receives the calibration parameter information of described terminal equipment feedback according to the feedback time parameter on corresponding subframe;
Antenna calibration is carried out according to described calibration parameter information in described base station.
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, described base station sends to described terminal equipment and triggers message, is specially:
Described base station sends the down physical layer control signaling that triggering terminal equipment carries out calibration measurement or feedback to described terminal equipment.
4. method as claimed in claim 3 is characterized in that,
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 the described down physical layer control signaling;
When the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
5. method as claimed in claim 4 is characterized in that,
When the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, adopt the mode of bitmap to indicate frequency band corresponding whether to need to measure and feed back in the described down physical layer control signaling.
6. method as claimed in claim 5 is characterized in that, in the described down physical layer control signaling, also comprises:
The resource allocation information of the up channel that calibration parameter information reports.
7. method as claimed in claim 3 is characterized in that, described down physical layer control signaling, also be used to trigger on the corresponding band aperiodic SRS transmission.
8. the method for claim 1 is characterized in that, the described positional information of notifying described terminal equipment calibration pilot signal is specially:
Described base station is by high-level signaling, or physical layer control signaling sends the frequency band parameter of calibration measurement to described terminal equipment;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
9. method as claimed in claim 8 is characterized in that, described frequency band parameter comprises at least:
The resource location information that described frequency band is shared, described resource location information can be continuous, also can be discontinuous.
10. method as claimed in claim 8 is characterized in that, also comprises:
Described base station is by high-level signaling, or the pilot tone parameter of physical layer control signaling in described terminal equipment sends the pairing frequency band of frequency band parameter of described calibration measurement.
11. the method for claim 1 is characterized in that, described Measuring Time parameter and feedback time parameter are specially:
The fixed value that described base station and described terminal equipment are made an appointment; Or,
Described base station is notified to the parameter information of described terminal equipment by configuration messages.
12., it is characterized in that described base station sends before the frequency band parameter of a plurality of frequency bands to described terminal equipment, also comprises as claim 8 or 11 described methods:
Described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter; Or,
Described base station is notified pairing Measuring Time parameter of each frequency band of described terminal equipment and feedback time parameter respectively by sending configuration messages to described terminal equipment.
13. the method for claim 1 is characterized in that, described method specifically comprises:
Described base station sends triggering message to described terminal equipment on n subframe;
The positional information of described terminal equipment calibration pilot signal is notified in described base station;
Described base station is according to the positional information of described calibration pilot signal, and Measuring Time parameter k, sends calibration pilot signal to described terminal equipment on n+k subframe;
Described base station receives the calibration parameter information of described terminal equipment feedback according to the feedback time parameter m on n+m subframe;
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.
14. a base station is characterized in that, comprises at least:
Trigger module is used for sending triggering message to described terminal equipment;
Sending module is used to notify the positional information of described terminal equipment calibration pilot signal, and according to the positional information of described calibration pilot signal, and the Measuring Time parameter, on corresponding subframe, send calibration pilot signal to described terminal equipment;
Receiver module is used for according to the feedback time parameter, receives the calibration parameter information of described terminal equipment feedback on corresponding subframe;
Calibration module is used for carrying out antenna calibration according to the received calibration parameter information of described receiver module.
15. base station as claimed in claim 14 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.
16. base station as claimed in claim 14 is characterized in that, described trigger module specifically is used for:
Send the down physical layer control signaling that triggering terminal equipment carries out calibration measurement or feedback 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 the described down physical layer control signaling, when the pre-configured described terminal equipment in described base station carries out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
17. base station as claimed in claim 14 is characterized in that, described trigger module also is used for by high-level signaling, or physical layer control signaling sends the frequency band parameter of calibration measurement to described terminal equipment;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
18. base station as claimed in claim 14 is characterized in that, described Measuring Time parameter and feedback time parameter are specially:
The fixed value that described base station and described terminal equipment are made an appointment, or described base station is notified to the parameter information of described terminal equipment by configuration messages;
Wherein, before described sending module sends the frequency band parameter of a plurality of frequency bands to described terminal equipment, described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter, or described sending module is notified pairing Measuring Time parameter of each frequency band of described terminal equipment and feedback time parameter respectively by sending configuration messages to described terminal equipment.
19. an antenna calibration method is characterized in that, may further comprise the steps at least:
Terminal equipment receives the triggering message that the base station sends;
Described terminal equipment receives the positional information of the calibration pilot signal of described base station transmission;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the Measuring Time parameter, receives the calibration pilot signal that described base station sends on corresponding subframe;
Described terminal equipment is determined calibration parameter information according to described calibration pilot signal;
Described terminal equipment reports described calibration parameter information to described base station, so that antenna calibration is carried out according to described calibration parameter information in described base station according to the feedback time parameter on corresponding subframe.
20. method as claimed in claim 19 is characterized in that, described terminal equipment receives before the triggering message of described 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.
21. method as claimed in claim 19 is characterized in that, described terminal equipment receives the triggering message that described base station sends, and is specially:
Described terminal equipment receives the down physical layer control signaling that the described terminal equipment of triggering that described base station sends carries out calibration measurement or feedback.
22. method as claimed in claim 21 is characterized in that,
When the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in the described down physical layer control signaling;
When the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
23. method as claimed in claim 22 is characterized in that,
When the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a plurality of frequency bands, adopt the mode of bitmap to indicate frequency band corresponding whether to need to measure and feed back in the described down physical layer control signaling.
24. method as claimed in claim 21 is characterized in that, in the described down physical layer control signaling, also comprises:
The resource allocation information of the up channel that calibration parameter information reports.
25. method as claimed in claim 19 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 parameter of the calibration measurement of physical layer control signaling transmission;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
26. method as claimed in claim 25 is characterized in that, described frequency band parameter comprises at least:
The resource location information that described frequency band is shared, described resource location information can be continuous, also can be discontinuous.
27. method as claimed in claim 25 is characterized in that, also comprises:
Described terminal equipment receives described base station by high-level signaling, or the pilot tone parameter in the pairing frequency band of frequency band parameter of the described calibration measurement of physical layer control signaling transmission.
28. method as claimed in claim 19 is characterized in that, described Measuring Time parameter and feedback time parameter are 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 that receives, determined relevant parameters information.
29., it is characterized in that described terminal equipment receives before the frequency band parameter of a plurality of frequency bands that described base station sends, and also comprises as claim 19 or 28 described methods:
Described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter; Or,
Described terminal equipment is determined pairing Measuring Time parameter of each frequency band and feedback time parameter respectively by receiving the configuration messages that described base station sends.
30. method as claimed in claim 19 is characterized in that, described method specifically comprises:
Terminal equipment receives the triggering message that the base station sends n subframe;
Described terminal equipment receives the positional information of the calibration pilot signal of described base station transmission;
Described terminal equipment is according to the positional information of described calibration pilot signal, and the pre-configured Measuring Time parameter k in described base station, receives the calibration pilot signal that described base station sends on n+k subframe;
Described terminal equipment is determined calibration parameter information according to described calibration pilot signal;
Described terminal equipment reports described calibration parameter information to described base station according to the pre-configured feedback time parameter m in described base station on n+m subframe, so that 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.
31. a terminal equipment is characterized in that, comprises at least:
Receiver module, be used to receive the triggering message that the base station sends, and the positional information of calibration pilot signal, and according to the positional information of described calibration pilot signal, and the pre-configured Measuring Time parameter in described base station, on corresponding subframe, receive the calibration pilot signal that described base station sends;
Determination module is used for determining calibration parameter information according to the received calibration pilot signal of described receiver module;
Sending module is used for according to the pre-configured feedback time parameter in described base station, reports the determined calibration parameter information of described determination module to described base station on corresponding subframe, so that antenna calibration is carried out according to described calibration parameter information in described base station.
32. terminal equipment as claimed in claim 31 is characterized in that,
Described sending module also was used for before described receiver module receives the trigger message 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.
33. terminal equipment as claimed in claim 31 is characterized in that, described receiver module also is used for:
The described terminal equipment of triggering that receives the transmission of described base station carries out the down physical layer control signaling of calibration measurement or feedback;
Wherein, when the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a frequency band, indicate whether to carry out calibration measurement and feedback by 1 bit in the described down physical layer control signaling, when the pre-configured information in the described base station that described terminal equipment receives is when carrying out the measurement of a plurality of frequency bands, indicate whether to carry out calibration measurement and feedback by a plurality of bits in the described down physical layer control signaling.
34. terminal equipment as claimed in claim 31 is characterized in that, described receiver module also is used for:
Receive described base station by high-level signaling, or the frequency band parameter of the calibration measurement of physical layer control signaling transmission;
Wherein, the frequency band parameter of described calibration measurement is specially the frequency band parameter of a frequency band or the frequency band parameter of a plurality of frequency bands.
35. terminal equipment as claimed in claim 31 is characterized in that, described Measuring Time parameter and feedback time parameter are specially:
The fixed value that described base station and described terminal equipment are made an appointment, or described terminal equipment is according to the configuration messages of the described base station transmission that receives, determined relevant parameters information;
Wherein, receive at described receiver module before the frequency band parameter of a plurality of frequency bands that described base station sends, described base station and described terminal equipment are made an appointment a plurality of fixed values respectively as pairing Measuring Time parameter of each frequency band and feedback time parameter, or described receiver module is determined pairing Measuring Time parameter of each frequency band and feedback time parameter respectively by receiving the configuration messages that described base station sends.
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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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| CN201110231334.6A CN102237908B (en) | 2011-08-12 | 2011-08-12 | Data transmission method and equipment |
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| WO2019037693A1 (en) * | 2017-08-24 | 2019-02-28 | 华为技术有限公司 | Frequency band indicating method, frequency band determining method, transmitter device, and receiver device |
| CN111917492A (en) * | 2019-05-09 | 2020-11-10 | 中国移动通信有限公司研究院 | Calibration method, network equipment and terminal equipment |
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| CN102237908B (en) | 2014-12-17 |
| WO2013023534A1 (en) | 2013-02-21 |
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