CN103684566A - Transceiver and antenna calibrating method - Google Patents
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- CN103684566A CN103684566A CN201210334884.5A CN201210334884A CN103684566A CN 103684566 A CN103684566 A CN 103684566A CN 201210334884 A CN201210334884 A CN 201210334884A CN 103684566 A CN103684566 A CN 103684566A
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Abstract
The invention provides a transceiver and an antenna calibrating method. In particular, the transceiver comprises N antennae, wherein N is bigger than or equal to 2. The method comprises the following steps: sending an uplink reference signal by a first antenna at the calibrating time of the first antenna; B, receiving the uplink reference signal which is sent by the first antenna for channel estimation by every other antenna and obtaining a channel estimate result from the first antenna to every other antenna; C, sending an uplink reference signal by every other antenna at the calibrating time of a second antenna; D, receiving the uplink reference signal which is sent by the every other antenna for channel estimation by the first antenna and obtaining a channel estimate result from every other antenna to the first antenna; E, calculating the calibrating coefficient of the antenna by the transceiver according to the channel estimate result from the first antenna to every other antenna and the channel estimate result from every other antenna to the first antenna.
Description
Technical field
The present invention relates to wireless communication field, espespecially a kind of transceiver and antenna calibration method thereof.
Background technology
Long Term Evolution (LTE, Long Term Evolution) system is supported Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplexing) and time division duplex (TDD, Time Division Duplexing) two kinds of patterns, wherein the deployment of LTE tdd mode is flexible, hardware cost is lower, is more suitable in focus and indoor covering.The up-downgoing of LTE TDD system takies identical frequency band, and up-downgoing wireless channel has channel reciprocity in theory, and base station can obtain downlink channel condition information according to uplink channel estimation result, and then optimizes downlink transfer performance.But, because transmitting-receiving radio circuit exists property difference, in practical communication, must, by specific antenna calibration algorithm, just can make the channel reciprocity in LTE TDD system be met.
In existing communication system, antenna calibration method can be divided into three major types: 1, the radio frequency self calibration based on particular radio-frequency calibration circuit; 2, based on native wireless signals transmitting-receiving and the base band self calibration calculating; 3, the mutual calibration realizing by the data interaction between a plurality of communication nodes.Wherein, base band self calibration has advantages of low cost (with respect to radio frequency self calibration) and without revising existing air protocol (with respect to mutual calibration), be applicable to the required low power nodes (LPN of focus and indoor covering, low power node),, lower powered base station low-cost such as Pico eNB, Femto eNB etc.
Summary of the invention
The embodiment of the present invention provides a kind of transceiver and antenna calibration method thereof, to reduce the implementation complexity of antenna calibration.
An antenna calibration method for transceiver, this transceiver comprises N root antenna, and wherein N is greater than or equal to 2, and the method comprises:
The first antenna in A, described N root antenna sends uplink reference signals at the first antenna in the alignment time;
The uplink reference signals that described in every other antenna reception in B, described N root antenna except the first antenna, the first antenna sends carries out channel estimating, obtains the channel estimation results from described the first antenna to described every other antennas;
C, described every other antenna send uplink reference signals at the second antenna in the alignment time;
The uplink reference signals that described in D, described the first antenna reception, every other antenna sends carries out channel estimating, obtains the channel estimation results from described every other antenna to described the first antenna;
E, described transceiver are according to the channel estimation results from described the first antenna to described every other antennas, and the channel estimation results from described every other antenna to described the first antenna, calculate antenna calibration coefficient.
The method further comprises: common protection interval GP described the first antenna alignment time of interior selection and the described second antenna alignment time of Frame of described transceiver Cong Zhe community and adjacent cell.
The method further comprises: described transceiver, when the running time-frequency resource of selecting for the antenna calibration of this community, makes it mutually orthogonal according to time-division or the maintenance of frequency division relation with the running time-frequency resource of the antenna calibration of adjacent cell.
The method further comprises: after execution step E, if described transceiver does not exit antenna calibration pattern, return to execution step A.
The method further comprises:
After execution step E, described transceiver judges whether default antenna calibration cycle-index reaches;
If do not reached, return to execution step A;
If reached, the antenna calibration coefficient that each cycle calculations is gone out is selected or merges, and obtains antenna calibration result, and finishes antenna calibration.
Described uplink reference signals is detection reference signal or demodulated reference signal.
A transceiver, comprising: N root antenna, and for every antenna, uplink reference signals maker, transmitter unit, receiving element, channel estimator, transmitting-receiving selected cell are set, wherein N is greater than or equal to 2;
The transmitting-receiving selected cell of the first antenna in described N root antenna is used for: at the first antenna in the alignment time, allow uplink reference signals that the uplink reference signals maker of described the first antenna provides to send by the transmitter unit of described the first antenna;
The channel estimator of every other antennas in described N root antenna except the first antenna is used for: from the receiving element of described every other antennas, obtain the uplink reference signals that the transmitter unit of described the first antenna sends and carry out channel estimating, obtain the channel estimation results from described the first antenna to described every other antennas;
The transmitting-receiving selected cell of described every other antennas is used for: at the second antenna in the alignment time, allow uplink reference signals that the uplink reference signals maker of described every other antennas provides to send by the transmitter unit of described every other antennas;
The channel estimator of described the first antenna is used for: from the receiving element of described the first antenna, obtain the uplink reference signals that the transmitter unit of described every other antennas sends and carry out channel estimating, obtain the channel estimation results from described every other antenna to described the first antenna;
This transceiver also comprises: alignment unit, the channel estimation results for basis from described the first antenna to described every other antennas, and the channel estimation results from described every other antenna to described the first antenna, calculate antenna calibration coefficient.
This transceiver further comprises: time schedule controller, be used in described the first antenna alignment time, the transmitting-receiving selected cell of described the first antenna is set to emission state, the transmitting-receiving selected cell of described every other antennas is set to accepting state, and controls the channel estimation results that channel estimator that described alignment unit receives described every other antennas provides; In described the second antenna alignment time, the transmitting-receiving selected cell of described every other antennas is set to emission state, the transmitting-receiving selected cell of described the first antenna is set to accepting state, and controls the channel estimation results that channel estimator that described alignment unit receives described the first antenna provides.
On described transceiver, the transmitting-receiving selected cell of every antenna comprises: a switch, and its first end connects described transmitter unit or described receiving element, and its second end connects the antenna that this transmitting-receiving selected cell is corresponding.
This transceiver further comprises: along separate routes/mixer, the transmitting-receiving selected cell that connects described N root antenna, for the uplink reference signals that described the first antenna provided in described the first antenna alignment time, export to respectively described every other antenna, and the uplink reference signals described every other antenna being provided in described the second antenna alignment time closes road and exports to described the first antenna.
On described transceiver, the transmitting-receiving selected cell of every antenna comprises the first switch and second switch; Wherein, the first end of described the first switch connects described transmitter unit or described receiving element, the second end of described the first switch connects the first end of described second switch, and the second end of described second switch connects described shunt/mixer or antenna corresponding to this transmitting-receiving selected cell.
Can find out, the embodiment of the present invention on transceiver, reuses existing uplink reference signals and uplink reference signals channel estimator carries out antenna calibration, also be about to existing uplink reference signals and be multiplexed with antenna calibration signal, thus the implementation complexity of reduction antenna calibration.Wherein, this uplink reference signals can be detection reference signal (SRS, sounding reference signal) or demodulated reference signal (DMRS, demodulation reference signal).Further, while thering is more than two antennas on transceiver, utilize the uplink reference signals of a plurality of quadratures can also save the required step of antenna calibration and time.Further, transceiver is selected the antenna calibration time in the protection interval (GP, guard period) of each Frame, can avoid the interference of antenna calibration of the transfer of data Dui Zhe community of adjacent cell.Further, while coexisting in a plurality of communication cells, by repeatedly carrying out antenna calibration, interference during all right Avoids or reduces antenna calibration.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of antenna calibration in the embodiment of the present invention;
Fig. 2 is the particular flow sheet of antenna calibration in the embodiment of the present invention;
Fig. 3 illustrates the antenna calibration time that in the embodiment of the present invention, LTE transceiver is selected;
Fig. 4 and Fig. 5 are the schematic diagram that in the embodiment of the present invention, a plurality of antennas replace dual-mode antenna calibrating signal;
Fig. 6 carries out repeatedly the schematic flow sheet of antenna calibration in the embodiment of the present invention;
Fig. 7 is the structural representation of realizing the LTE transceiver of antenna calibration in the embodiment of the present invention;
Fig. 8 (a) and Fig. 8 (b) illustrate the concrete structure of the LTE transceiver of realizing antenna calibration in the embodiment of the present invention;
Fig. 9 illustrates the another concrete structure of the LTE transceiver of realizing antenna calibration in the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Existing base band method for self-calibrating is not considered the concrete structure of transceiver, needs otherwise designed, storage and use antenna calibration signal, comparatively complicated in realization.For this reason, the embodiment of the present invention provides a kind of method of antenna calibration, the uplink reference signals of communication system and channel estimator are used for to antenna calibration, thereby a kind of base band method for self-calibrating of enhancement mode is provided, reduced the implementation complexity of antenna calibration on transceiver.Further, for the situation on transceiver with two above antenna receiving-sendings, the antenna calibration that uses uplink reference signals to carry out only needs two steps just can complete, and also can save the time of antenna calibration.In practical application, this transceiver can be the transceiver (or being called LTE transceiver) adopting in LTE system, or the transceiver adopting in 2G, 3G system, or LPN, or UE etc.Below adopting LTE transceiver is that example is illustrated specific implementation of the present invention, and following realization is equally applicable to the transceiver of other types.
Fig. 1 is the schematic flow sheet of LTE transmitting-receiving aircraft antenna calibration in the embodiment of the present invention, and this LTE transceiver is provided with N root antenna, be respectively the first antenna, the second antenna ..., N antenna, wherein N >=2.While it may be noted that specific implementation can using in N root antenna any one as the first antenna, be also reference antenna.
Step 101: the first antenna sends uplink reference signals (such as SRS, DMRS etc.) as antenna calibration signal at the first antenna in the alignment time.
Step 102: n antenna (n=2 ~ N) receives and carries out channel estimating, obtains the channel estimation results from the first antenna to n antenna.
Step 103: n antenna sends uplink reference signals (such as SRS, DMRS etc.) as antenna calibration signal at the second antenna in the alignment time.
Also, other antennas of every except the first antenna all perform step 102 and 103.In step 103, the uplink reference signals that other antennas of N-1 root send is mutually orthogonal.
Step 104: the first antenna reception (N-1) group uplink reference signals also carries out channel estimating, obtains the channel estimation results from n antenna to the first antenna.
Step 105:LTE transceiver carries out antenna calibration according to above-mentioned channel estimation results.
In specific implementation, LTE transceiver can use any idle constantly as the antenna calibration time, in order to send uplink reference signals.The idle moment on different pieces of information frame may be different, and the antenna calibration time correspondingly neither be fixed.Certainly, LTE transceiver also can be selected the antenna calibration time in the GP of each Frame, thereby avoids the interference of antenna calibration of the transfer of data Dui Zhe community of adjacent cell, and wherein this community is the community at this LTE transceiver place.Particularly, in the common GP of the Frame of LTE transceiver Cong Zhe community and adjacent cell, select described the first antenna alignment time and described the second antenna alignment time.Such as, in the subframe 1 of the Frame of all communities, all there is GP, therefore LTE transceiver can be elected the time in the GP of the subframe of each Frame 1 as the antenna calibration time.In step 101-102, the first antenna sends uplink reference signals at the antenna calibration of the first frame in the time, by other antenna receptions; In step 103-104, other antennas send uplink reference signals at the antenna calibration of the second frame in the time, by the first antenna reception.Wherein, the second frame can be next Frame of the first frame, or a upper Frame of the first frame.And for example, LTE transceiver is used for performing step 101-102 by the 1st OFDM symbol in the GP of the subframe of certain Frame 1, and the 2nd OFDM symbol is used for performing step 103-104.For another example, have the situation of GP for the subframe 6 of a plurality of neighbor cells, antenna calibration all can be carried out in above-mentioned community in the GP of the subframe 6 of each Frame.
The time order and function that it may be noted that the first antenna alignment time and the second antenna alignment time is not limit.Also, can first perform step 101-102, rear execution step 103-104; Or, first perform step 103-104, rear execution step 101-102.
Take LPN as example, and Fig. 2 illustrates the particular flow sheet of antenna calibration in the embodiment of the present invention, this LPN use antenna 1, antenna 2 ..., antenna N transceiving data, the idiographic flow of its antenna calibration comprises the following steps.
Step 201:LPN selectes the antenna calibration time in the GP of Frame, enters antenna calibration pattern.
In an embodiment of the present invention, LPN determines whether to enter antenna calibration pattern, and the selected time of carrying out antenna calibration.In a specific implementation, for fear of the interference of the antenna calibration of the transfer of data Dui Zhe community of adjacent cell, LPN selects the antenna calibration time in the GP of Frame.In another specific implementation, the antenna calibration time is selected in the GP of subframe 1 of each Frame, and between DwPTS and UpPTS, particular location as shown in Figure 3.In another specific implementation, can further specify the 1st OFDM symbol in the GP of subframe 1 only for antenna calibration, make different frame structures there is the cycle of identical antenna calibration.
Step 202: antenna 1 sends SRS1 at the antenna calibration of t frame in the time.Wherein, t frame can refer to any one Frame.
Step 203: antenna n (n=2 ~ N) receives SRS1 and carries out channel estimating, obtains the channel from antenna 1 to antenna n
Can find out, antenna 2 ..., antenna N performs step respectively 203, as shown in Figure 4, the SRS(that reception antenna 1 sends is SRS1) and carry out separately SRS channel estimating.
Step 204: in the time, antenna 2-N sends the SRS of (N-1) group quadrature at the antenna calibration of (t+1) frame, above-mentioned (N-1) group SRS can distinguish by Comb and/or CS.
Step 205: antenna 1 reception antenna 2 ..., the SRS(that sends of antenna N be respectively SRS2 ..., SRSN), as shown in Figure 5, and obtain the channel from antenna n (n=2 ~ N) to antenna 1 by SRS channel estimating
Step 206:LPN utilizes above-mentioned steps 203 and 205 channel estimation results that obtain, and take antenna 1 as reference, calculates antenna calibration coefficient.
Particularly, antenna calibration coefficient is according to formula C
1=1,
determine.Wherein,
for the channel estimation results from antenna 1 to antenna n,
for the channel estimation results from antenna n to antenna 1; C
1for the antenna calibration coefficient of antenna 1, C
nantenna calibration coefficient for antenna n.
Step 207:LPN exits antenna calibration pattern.So far, the flow process of whole antenna calibration finishes.
Fig. 1 or Fig. 2 are the flow process that the LPN in single subdistrict carries out antenna calibration.Consider when a plurality of LTETDD community coexists, may occur that a plurality of neighbor cells carry out the situation of antenna calibration simultaneously, in order to eliminate the phase mutual interference between the antenna calibration signal of neighbor cell, such as the interference to the antenna calibration of adjacent cell of the antenna calibration of this community, or the interference of the antenna calibration of the antenna calibration Dui Zhe community of adjacent cell, can also take further measures and disturb inhibition.Such as, the transmitting power of adjustment antenna calibration signal, to reduce the interference to adjacent cell.And for example, carry out continuously repeatedly antenna calibration, many groups antenna calibration coefficient is selected or merged.For another example, the cooperation of antenna calibration running time-frequency resource is carried out in neighbor cell, by time-division or frequency division mode, avoid phase mutual interference, LTE transceiver, when the running time-frequency resource of selecting for the antenna calibration of this community, makes it mutually orthogonal according to time-division or the maintenance of frequency division relation with the running time-frequency resource of the antenna calibration of adjacent cell.
In one embodiment of the invention, LTE transceiver can carry out repeatedly antenna calibration continuously, and idiographic flow as shown in Figure 6.Wherein, step 601-606 and step 201-206 are similar, complete an antenna calibration (or being called single cycle) from step 602 to step 606, repeat no more herein.After step 606, the flow process shown in Fig. 6 further comprises step 607:LTE transceiver judges whether default antenna calibration cycle-index reaches, to judge whether to exit antenna calibration pattern; If do not reached, return to execution step 602; If reached, perform step 608-609, the antenna calibration coefficient going out from each cycle calculations obtains antenna calibration result, and exits antenna calibration pattern, finishes the flow process of whole antenna calibration.Particularly, in step 608, LTE transceiver merges the many groups antenna calibration coefficient calculating, such as all antenna calibration coefficients that calculate are averaged, or filter out many group antenna calibration coefficients from all antenna calibration coefficients that calculate after, be averaged again, obtain antenna calibration result; Or, the antenna calibration coefficient that LTE transceiver goes out from each cycle calculations, select best one group as antenna calibration result.
Can find out, the consideration of disturbing during for Avoids or reduces antenna calibration, LTE transceiver can judge whether to exit antenna calibration pattern according to actual conditions, if do not exited, returns to execution step 202, to repeatedly perform step 202-206, it is also the single cycle of antenna calibration.
In the flow process shown in Fig. 1-6, the channel estimator that can reuse in uplink reference signals and LTE transceiver carries out antenna calibration, thereby reduces the implementation complexity of antenna calibration, adopts the schematic structure of the LTE transceiver of above-mentioned antenna calibration method to see Fig. 7.Suppose that this LTE transceiver has N antenna (N >=2), for each antenna arranges one group of processing unit.
Wherein, the processing unit arranging for antenna 1 comprises: uplink reference signals maker 711, transmitter unit 712, transmitting-receiving selected cell 713, receiving element 714, channel estimator 715.Particularly, the uplink reference signals that 712 pairs of uplink reference signals makers 711 of transmitter unit provide is processed, and when receiving and dispatching selected cell 713 in emission state, allows transmitter unit 712 that the uplink reference signals after processing is sent; When receiving and dispatching selected cell 713 in accepting state, the uplink reference signals that receiving element 714 receives corresponding to antenna n (n=2 ~ N), and the uplink reference signals after processing is offered to channel estimator 715, by channel estimator 715, carry out corresponding channel estimating, obtain the channel from antenna n (n=2 ~ N) to antenna 1
For antenna n (n=2 ~ N), take antenna 2 as example, set processing unit comprises: uplink reference signals maker 721, transmitter unit 722, transmitting-receiving selected cell 723, receiving element 724, channel estimator 725.Particularly, when the transmitting-receiving selected cell 713 of antenna 1 is during in emission state, transmitting-receiving selected cell 723 is in accepting state, the uplink reference signals that receiving element 724 receives corresponding to antenna 1, and the uplink reference signals after processing is offered to channel estimator 725, by channel estimator 725, carry out corresponding channel estimating, obtain the channel from antenna 1 to antenna 2
when the transmitting-receiving selected cell 713 of antenna 1 is during in accepting state, transmitting-receiving selected cell 723 is in emission state, and the uplink reference signals that 722 pairs of uplink reference signals makers 721 of transmitter unit provide is processed, and the uplink reference signals after processing is sent.For the situation of N > 2, antenna 3 ..., antenna N operation principle identical with antenna 2, repeat no more herein.
In addition, this LTE transceiver also comprises: alignment unit 706, the channel estimation results providing in the first antenna alignment time for receive channel estimator 725 grades
the channel estimation results that receive channel estimator 715 provided in the second antenna alignment time
and carry out antenna calibration according to above-mentioned channel estimation results.
In one embodiment of the invention, the realization of LTE transceiver is as shown in Fig. 8 (a) and Fig. 8 (b).Particularly, this LTE transceiver adopts SRS sequence to carry out antenna calibration.In Fig. 8 (a), antenna 1 in emission state, other antennas in accepting state; In Fig. 8 (b), antenna 1 in accepting state, other antennas in emission state.Also, antenna 1 and other antennas are are alternately received and dispatched SRS by eating dishes without rice or wine.
Particularly, the processing unit arranging for antenna 1 comprises: SRS maker 811, the processing 812 that transmits, transmitting radio frequency link 813, switch 1814, received RF link 815, reception signal processing 816, SRS channel estimator 817.Wherein, SRS maker 811 and SRS channel estimator 817 are similar with the corresponding unit in Fig. 7, repeat no more herein.The processing 812 that transmits forms transmitter units 712 with transmitting radio frequency link 813, and received RF link 815 and reception signal processing 816 form receiving elements 714.The processing 812 that transmits comprises following operation: the SRS sequence that SRS maker 811 is provided is carried out IFFT, and increases CP.Receive signal processing 816 and comprise following operation: the signal receiving from received RF link 815, remove CP, and carry out FFT.
Particularly, time schedule controller 809 is as follows to the control of other unit according to the flow process of antenna calibration: in the first antenna alignment time, time schedule controller 809 triggers the SRS maker 811 of antenna 1, and switch 1 is set to emission state, the switch of antenna 2 ~ N is set to accepting state, and controls the channel estimation results that SRS channel estimator that calibration factor calculator 808 records antenna 2 ~ N provides; In the second antenna alignment time, time schedule controller 809 triggers the SRS maker of antenna 2 ~ N, and the switch of antenna 2 ~ N is set to emission state, switch 1 is set to accepting state, and controls the channel estimation results that SRS channel estimator 817 that calibration factor calculator 808 records antenna 1 provides.Further, time schedule controller 809 is used to indicate calibration factor calculator 808 and calculates antenna calibration coefficient, and the process that calibration factor calculator 808 calculates antenna calibration coefficient can, referring to step 206, repeat no more herein.
In one embodiment of the invention, the another specific implementation of LTE transceiver as shown in Figure 9.Wherein, SRS maker 911, transmit process 912, transmitting radio frequency link 913, received RF link 915, receive that signal processes 916, the corresponding unit that arranges for antenna 1 in SRS channel estimator 917 and Fig. 8 is similar, also similar in the processing unit arranging for other antennas and Fig. 8, repeat no more herein.Similarly, calibration factor calculator 908, time schedule controller 909 are also similar with the corresponding unit in Fig. 8.
The transmitting-receiving selected cell different from Fig. 8, the LTE transceiver shown in Fig. 9 is interconnected to constitute by two switches for each antenna setting, the transmitting-receiving selected cell 914 of antenna 1 of take is below illustrated as example.Transmitting-receiving selected cell 914 comprises the first switch and second switch, and the first switch switches between transmitting radio frequency link 913 and received RF link 915, and second switch switches between shunt/mixer 901 and antenna 1.Particularly, the second end that the first end of the first switch connects transmitting radio frequency link 913 or received RF link 915, the first switches connects the first end of second switch, and the second end of second switch connects shunt/mixer 901, closes road port or antenna 1.The transmitting-receiving selected cell of each other antenna includes the first switch and second switch, and the transmitting-receiving selected cell 914 of its operation principle and antenna 1 is similar, repeats no more herein.Different, the second end of the second switch of each other antenna connects minute road port of shunt/mixer 901 or the antenna of correspondence.
Shown in Fig. 9 is the situation that the second switch of all antennas all connects shunt/mixer 901, and now LTE transceiver carries out antenna calibration.Different from Fig. 8, in this embodiment, needn't be through the transmission of eating dishes without rice or wine for the SRS sequence of antenna calibration.When the second switch of all antennas connects corresponding antenna, LTE transceiver can carry out normal transfer of data.In Fig. 9, in the first antenna alignment time, the first switch of antenna 1 connects transmitting radio frequency link 913, and the first switch of other antennas connects corresponding received RF link.Also, antenna 1 sends SRS sequence, and each other antenna all receives SRS sequence.In the second antenna alignment time, the first switch of antenna 1 connects received RF link 915, and the first switch of other antennas connects corresponding transmitting radio frequency link, and each other antenna sends SRS sequence and antenna 1 receives N-1 SRS sequence.
The foregoing is only embodiments of the invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (11)
1. an antenna calibration method for transceiver, this transceiver comprises N root antenna, and wherein N is greater than or equal to 2, it is characterized in that, and the method comprises:
The first antenna in A, described N root antenna sends uplink reference signals at the first antenna in the alignment time;
The uplink reference signals that described in every other antenna reception in B, described N root antenna except the first antenna, the first antenna sends carries out channel estimating, obtains the channel estimation results from described the first antenna to described every other antennas;
C, described every other antenna send uplink reference signals at the second antenna in the alignment time;
The uplink reference signals that described in D, described the first antenna reception, every other antenna sends carries out channel estimating, obtains the channel estimation results from described every other antenna to described the first antenna;
E, described transceiver are according to the channel estimation results from described the first antenna to described every other antennas, and the channel estimation results from described every other antenna to described the first antenna, calculate antenna calibration coefficient.
2. method according to claim 1, is characterized in that, further comprises: common protection interval GP described the first antenna alignment time of interior selection and the described second antenna alignment time of Frame of described transceiver Cong Zhe community and adjacent cell.
3. method according to claim 1 and 2, it is characterized in that, further comprise: described transceiver, when the running time-frequency resource of selecting for the antenna calibration of this community, makes it mutually orthogonal according to time-division or the maintenance of frequency division relation with the running time-frequency resource of the antenna calibration of adjacent cell.
4. method according to claim 1 and 2, is characterized in that, further comprises: after execution step E, if described transceiver does not exit antenna calibration pattern, return to execution step A.
5. method according to claim 1 and 2, is characterized in that, further comprises:
After execution step E, described transceiver judges whether default antenna calibration cycle-index reaches;
If do not reached, return to execution step A;
If reached, the antenna calibration coefficient that each cycle calculations is gone out is selected or merges, and obtains antenna calibration result, and finishes antenna calibration.
6. method according to claim 1 and 2, is characterized in that, described uplink reference signals is detection reference signal or demodulated reference signal.
7. a transceiver, is characterized in that,
Comprise: N root antenna, and for every antenna, uplink reference signals maker, transmitter unit, receiving element, channel estimator, transmitting-receiving selected cell are set, wherein N is greater than or equal to 2;
The transmitting-receiving selected cell of the first antenna in described N root antenna is used for: at the first antenna in the alignment time, allow uplink reference signals that the uplink reference signals maker of described the first antenna provides to send by the transmitter unit of described the first antenna;
The channel estimator of every other antennas in described N root antenna except the first antenna is used for: from the receiving element of described every other antennas, obtain the uplink reference signals that the transmitter unit of described the first antenna sends and carry out channel estimating, obtain the channel estimation results from described the first antenna to described every other antennas;
The transmitting-receiving selected cell of described every other antennas is used for: at the second antenna in the alignment time, allow uplink reference signals that the uplink reference signals maker of described every other antennas provides to send by the transmitter unit of described every other antennas;
The channel estimator of described the first antenna is used for: from the receiving element of described the first antenna, obtain the uplink reference signals that the transmitter unit of described every other antennas sends and carry out channel estimating, obtain the channel estimation results from described every other antenna to described the first antenna;
This transceiver also comprises: alignment unit, the channel estimation results for basis from described the first antenna to described every other antennas, and the channel estimation results from described every other antenna to described the first antenna, calculate antenna calibration coefficient.
8. transceiver according to claim 7, it is characterized in that, further comprise: time schedule controller, be used in described the first antenna alignment time, the transmitting-receiving selected cell of described the first antenna is set to emission state, the transmitting-receiving selected cell of described every other antennas is set to accepting state, and controls the channel estimation results that channel estimator that described alignment unit receives described every other antennas provides; In described the second antenna alignment time, the transmitting-receiving selected cell of described every other antennas is set to emission state, the transmitting-receiving selected cell of described the first antenna is set to accepting state, and controls the channel estimation results that channel estimator that described alignment unit receives described the first antenna provides.
9. according to the transceiver described in claim 7 or 8, it is characterized in that, on described transceiver, the transmitting-receiving selected cell of every antenna comprises: a switch, and its first end connects described transmitter unit or described receiving element, and its second end connects the antenna that this transmitting-receiving selected cell is corresponding.
10. according to the transceiver described in claim 7 or 8, it is characterized in that, further comprise: along separate routes/mixer, the transmitting-receiving selected cell that connects described N root antenna, for the uplink reference signals that described the first antenna provided in described the first antenna alignment time, export to respectively described every other antenna, and the uplink reference signals described every other antenna being provided in described the second antenna alignment time closes road and exports to described the first antenna.
11. according to the transceiver described in claim 7 or 8, it is characterized in that, on described transceiver, the transmitting-receiving selected cell of every antenna comprises the first switch and second switch; Wherein, the first end of described the first switch connects described transmitter unit or described receiving element, the second end of described the first switch connects the first end of described second switch, and the second end of described second switch connects described shunt/mixer or antenna corresponding to this transmitting-receiving selected cell.
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| CN107666338A (en) * | 2016-07-26 | 2018-02-06 | 大众汽车有限公司 | For characterizing device, the method and computer program of the antenna element in space |
| CN108880702A (en) * | 2017-05-10 | 2018-11-23 | 中兴通讯股份有限公司 | A kind of antenna correcting method of FDD system, antenna calibration device and base station |
| CN110417488A (en) * | 2019-08-23 | 2019-11-05 | 安徽超清科技股份有限公司 | A kind of relaying calibration method, device, storage medium and the server of 5G cooperation communication system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107666338A (en) * | 2016-07-26 | 2018-02-06 | 大众汽车有限公司 | For characterizing device, the method and computer program of the antenna element in space |
| CN107666338B (en) * | 2016-07-26 | 2021-08-13 | 大众汽车有限公司 | Apparatus, method and computer program for characterizing antenna elements in a space |
| CN108880702A (en) * | 2017-05-10 | 2018-11-23 | 中兴通讯股份有限公司 | A kind of antenna correcting method of FDD system, antenna calibration device and base station |
| CN108880702B (en) * | 2017-05-10 | 2022-03-25 | 中兴通讯股份有限公司 | Antenna correction method and device for FDD system and base station |
| CN110417488A (en) * | 2019-08-23 | 2019-11-05 | 安徽超清科技股份有限公司 | A kind of relaying calibration method, device, storage medium and the server of 5G cooperation communication system |
| CN110417488B (en) * | 2019-08-23 | 2021-09-24 | 安徽超清科技股份有限公司 | Relay calibration method, device, storage medium and server of 5G cooperative communication system |
| CN111208463A (en) * | 2020-01-15 | 2020-05-29 | 湖南卫导信息科技有限公司 | Link insertion loss rapid calibration method for darkroom starry test system |
| CN111208463B (en) * | 2020-01-15 | 2023-03-07 | 湖南卫导信息科技有限公司 | Link insertion loss rapid calibration method for darkroom starry test system |
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