CN104811255B - A kind of antenna calibration method and device - Google Patents
A kind of antenna calibration method and device Download PDFInfo
- Publication number
- CN104811255B CN104811255B CN201510196861.6A CN201510196861A CN104811255B CN 104811255 B CN104811255 B CN 104811255B CN 201510196861 A CN201510196861 A CN 201510196861A CN 104811255 B CN104811255 B CN 104811255B
- Authority
- CN
- China
- Prior art keywords
- time
- time range
- base station
- radio frames
- specified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to the communications field, more particularly to a kind of antenna calibration method and device, for when base station carries out antenna calibration, effectively reducing interference signal to calibrating the influence of flow.The method is：Devise brand-new calibration interference and hide mechanism, base station is when selected prover time point is entered, interferometry is first carried out within the special time, pick out candidate time section of the interference signal intensity less than pre-determined threshold, then, prover time point is picked out in candidate time Duan Zhongzai, and antenna calibration is carried out based on the prover time point.So, can be disturbed by calculating, select a relatively minimum position of annoyance level and perform calibration operation, so that the influence that interference is calculated calibration factor is farthest reduced, so as to ensure the performance of TDD base station beam excipients.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of antenna calibration method and device.
Background technology
, it is necessary to 8 in mobile communication time division duplex Long Term Evolution (Time division duplex, TDD LTE) system
The calibration function of antenna, in order to which beam shaping function can make full use of the heterogeneite of up-downgoing channel, so as to show
Best effect.
At present in the TDD LTE networks of China Mobile, the TD SDMA Time of F-band is operated in
Division Synchronized Code Division Multiple Access, TD-SCDMA) system, it is operated in A frequency ranges
TD-SCDMA system, and time-division Long Term Evolution (Time Division Long Term for being operated in F-band
Evolution, TD-LTE) share same radio frequency unit and antenna feeder.Further, specified based on standard, TD-SCDMA system
Up-downgoing transmission time point and up-downgoing reception time point with TD-LTE system need alignment.
Referring particularly to shown in Fig. 1, under TD-LTE and TD-SCDMA common mode configuration surroundings, the frame structure of TD-SCDMA when
Gap proportioning is the descending sub frame (D) of 2 sub-frame of uplink (U) 5, and the time slot proportion of the frame structure of TD-LTE is 1U3D, therefore, TD-SCDMA
With protection time slot (Guard Period, GP) position that the prover time point of TD-LTE is all located at TD-SCDMA.
Refering to shown in Fig. 2, at present, because TDD LTE systems introduce special subframe configuration 6 in F-band, so, when not
Using a certain base station of special subframe configuration 6 when GP positions carry out time calibration, under the neighboring station using special subframe configuration 6
The downstream signal of row pilot time slot (Downlink Pilot Time Slot, DwPTS) just does what is calibrated with above-mentioned a certain base station
Time point overlaps in time domain；Further, since calibration signal is transmitted using the passage of normal traffic signal, thus transmitting
Power ratio is higher, and the interference performance of anti-adjacent area is strong, but enters because calibration signal employs calibrated channel (Boosterless)
Row is received, therefore receiving power is relatively low, it is easy to disturbed by the descending pilot frequency of adjacent area, so as to cause to calibrate the coefficient for obtaining not
Correctly, it is possible to having influence on calculating and the excipient effect of follow-up excipient coefficient, and then the signal of base station is badly influenced
Emitting performance.
The content of the invention
The embodiment of the present invention provides a kind of antenna calibration method and device, to when base station carries out antenna calibration, effectively
Interference signal is reduced to calibrating the influence of flow.
Concrete technical scheme provided in an embodiment of the present invention is as follows：
A kind of antenna calibration method, including：
Base station carries out interferometry in the first specified time range in current TD-LTE radio frames, and described first specifies
Time range is the partial period in special subframe in the current TD-LTE radio frames；
Specified in time range described first and filter out interference signal intensity according to the interference measurement results for obtaining in base station
Less than the candidate time section of pre-determined threshold, and the selected prover time point in candidate time section；
When the prover time point of the base station in next TD-LTE radio frames is reached, calibration operation is performed.
So, can be disturbed by calculating, select a relatively minimum position of annoyance level and perform calibration operation, so that
The influence that interference is calculated calibration factor is farthest reduced, so as to ensure the performance of TDD base station beam excipients.
Base station carries out interferometry in the first specified time range in current TD-LTE radio frames, including：
Base station will protect time slot GP in current TD-LTE radio frames with time-division duplex TD-SCDMA radio frames
The time point of original position alignment, as the described first starting point for specifying time range, will be special in current TD-LTE radio frames
Different time slot end time point, as the described first end point for specifying time range；
Specified in time range selected first and carry out interferometry in base station.
Specified in time range described first and filter out interference signal intensity according to the interference measurement results for obtaining in base station
Less than the candidate time section of pre-determined threshold, and prover time point is selected within the time period, including：
Specified in time range described first and filter out interference signal intensity according to the interference measurement results for obtaining in base station
Less than the candidate time section of pre-determined threshold；
If base station determines itself using TDD special subframes configuration 5, base station is being further determined that in the candidate time section
When including the second specified time range, specified described second and prover time point is selected in time range, wherein, base station ought
The time point alignd with GP original positions in TD-SCDMA radio frames in preceding TD-LTE radio frames specifies the time as described second
The starting point of scope, using GP end times point in current TD-LTE radio frames as the described second end for specifying time range
Point；
If base station determines itself using TDD special subframes configuration 6, base station is being further determined that in the candidate time section
When including the 3rd specified time range, specified the described 3rd and prover time point is selected in time range, wherein, base station ought
The time point alignd with special sub- end position in TD-SCDMA radio frames in preceding TD-LTE radio frames specifies as the described 3rd
The starting point of time range, using GP end times point in current TD-LTE radio frames as the described 3rd knot for specifying time range
Spot.
Further include：
If base station determines that itself is specified using not including second in TDD special subframes configuration 5 and candidate time section
Time range, or, if base station determines itself using not including the in TDD special subframes configuration 6 and candidate time section
Three when specifying time range, then base station further determine that include the 4th specified time range in the candidate time section when,
Specified from the described 4th and prover time point is selected in time range；Wherein, when the described 4th specified time range is first specified
Between in the range of except described second specify time range and the 3rd specify time range in addition to time period.
Further include：
During selecting prover time point in specifying the time period the 4th, each terminal is indicated when the described 4th specifies
Between the transmission power of detection reference signal SRS, and the SRS expectation received powers for reducing itself are reduced in section.
Further include：
If base station is specified in time range described first and is not filtered out interference signal according to the interference measurement results for obtaining
Intensity then selectes calibration less than the candidate time section of pre-determined threshold on the sub-frame of uplink after described first specifies time range
Time point.
Prover time point is selected in base station on the sub-frame of uplink after first specifies time range, including：
After time range is specified in base station first, the regular upstream for not carrying Physical Random Access Channel and SRS is filtered out
Subframe, and therefrom select prover time point.
Further include：
If prover time point is selected in base station in the sub-frame of uplink in current TD-LTE radio frames, in local administration
In all cells, Physical Uplink Shared Channel is not dispatched on the sub-frame of uplink in next TD-LTE radio frames, and
Physical Uplink Control Channel is not dispatched in n-th subframe before the sub-frame of uplink.
Further include：
Base station notifies adjacent base station by X2 interface, uncomfortable on the sub-frame of uplink in next TD-LTE radio frames
Degree Physical Uplink Shared Channel, and do not dispatch Physical Uplink Control Channel in n-th subframe before the sub-frame of uplink.
A kind of antenna calibration equipment, including：
Measuring unit, specifies to enter in time range for first in double Long Term Evolution TD-LTE radio frames of current time-division
Row interferometry, described first to specify time range be the partial period in the current TD-LTE radio frames in special subframe；
Screening unit, for according to the interference measurement results for obtaining, being filtered out in the described first specified time range dry
Disturb candidate time section of the signal intensity less than pre-determined threshold, and the selected prover time point in candidate time section；
Alignment unit, when being reached for the prover time point in next TD-LTE radio frames, performs calibration behaviour
Make.
So, can be disturbed by calculating, select a relatively minimum position of annoyance level and perform calibration operation, so that
The influence that interference is calculated calibration factor is farthest reduced, so as to ensure the performance of TDD base station beam excipients.
When carrying out interferometry in the first specified time range in current TD-LTE radio frames, the measuring unit is used
In：
In current TD-LTE radio frames time slot GP startings will be protected with time-division duplex TD-SCDMA radio frames
The time point of aligned in position, as the described first starting point for specifying time range, when will be special in current TD-LTE radio frames
Gap end time point, as the described first end point for specifying time range；
Being specified in time range selected first carries out interferometry.
According to the interference measurement results for obtaining, specified described first and filter out interference signal intensity and be less than in time range
The candidate time section of pre-determined threshold, and when selecting prover time point within the time period, the screening unit is used for：
According to the interference measurement results for obtaining, specified described first and filter out interference signal intensity and be less than in time range
The candidate time section of pre-determined threshold；
If it is determined that itself is using TDD special subframes configuration 5, then include the in candidate time section further determining that
During two specified time ranges, specified described second and prover time point is selected in time range, wherein, the screening unit ought
The time point alignd with GP original positions in TD-SCDMA radio frames in preceding TD-LTE radio frames specifies the time as described second
The starting point of scope, using GP end times point in current TD-LTE radio frames as the described second end for specifying time range
Point；
If it is determined that itself is using TDD special subframes configuration 6, then include the in candidate time section further determining that
During three specified time ranges, specified the described 3rd and prover time point is selected in time range, wherein, the screening unit ought
The time point alignd with special sub- end position in TD-SCDMA radio frames in preceding TD-LTE radio frames specifies as the described 3rd
The starting point of time range, using GP end times point in current TD-LTE radio frames as the described 3rd knot for specifying time range
Spot.
The screening unit is further used for：
The time is specified if it is determined that itself being configured using TDD special subframes and not including second in 5 and candidate time section
Scope, or, however, it is determined that itself using do not include in TDD special subframes configuration 6 and candidate time section the 3rd it is specified when
Between scope when, then when further determining that include the 4th in candidate time section specifies time range, from the described 4th finger
Prover time point is selected in the range of fixing time；Wherein, the described 4th time range is specified to be specified in time range except institute for first
State the time period outside the second specified time range and the 3rd specified time range.
Further include：
First scheduling unit, the process for selecting prover time point in the 4th specified time period in the screening unit
In, indicate each terminal to specify the transmission power of reduction detection reference signal SRS in the time period the described 4th, and reduce certainly
The SRS expectation received powers of body.
The screening unit is further used for：
If according to the interference measurement results for obtaining, being specified in time range described first and not filtering out interference signal intensity
Less than the candidate time section of pre-determined threshold, then prover time is selected on the sub-frame of uplink after described first specifies time range
Point.
When selecting prover time point on the sub-frame of uplink after first specifies time range, the screening unit is used for：
After specifying time range first, the regular upstream subframe for not carrying Physical Random Access Channel and SRS is filtered out,
And therefrom select prover time point.
Further include：
Second scheduling unit, for being selected in a sub-frame of uplink in current TD-LTE radio frames when the screening unit
During prover time point, in all cells of local administration, on the sub-frame of uplink in next TD-LTE radio frames not
Scheduling Physical Uplink Shared Channel, and physical uplink control letter is not dispatched in n-th subframe before the sub-frame of uplink
Road.
Second scheduling unit is further used for：
Adjacent base station is notified by X2 interface, thing is not dispatched on the sub-frame of uplink in next TD-LTE radio frames
Reason Uplink Shared Channel, and do not dispatch Physical Uplink Control Channel in n-th subframe before the sub-frame of uplink.
Brief description of the drawings
Fig. 1 is the frame head corresponding relation of TDL frames and TDS frames under prior art；
Fig. 2 is TDL calibration time-domain position schematic diagrames in prior art and the embodiment of the present invention；
Fig. 3 is TDL calibration flow charts in the embodiment of the present invention；
Fig. 4 is base station functions structural representation in the embodiment of the present invention.
Specific embodiment
In the case where the networking scene of the special subframe of TDD standards configuration 6 is configured with, in order to avoid base station is carrying out antenna calibration
When, disturbed by neighboring station downstream signal, it is abnormal so as to cause calibration factor to occur, in the embodiment of the present invention, it is proposed that solve
Scheme, specially：By calculating the noise power at calibration moment, so as to judge whether interference, and then dynamic select is calibrated
Time-domain position hide interference.
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
In the embodiment of the present invention, by taking TDD-LTE base stations as an example, can be determined by measurement in real time current interference etc.
Level, so as to select corresponding prover time point (time-domain position calibrated).
Refering to shown in Fig. 3, in the embodiment of the present invention, be operated in TDD-LTE carry out antenna calibration detailed process it is as follows：
Step 300：Base station is entered in the first specified time range in current TD-LTE radio frames (hereinafter referred to as TDL frames)
Row interferometry, first to specify time range be the partial period in current TDL frames in special subframe for this.
In practical application, the base station of TDD-LTE standards is required to perform interferometry when each TDL frame starts, with
It is determined which time-domain position is able to carry out calibration operation in each TDL frame, in the present embodiment, only by taking a TDL frame as an example
(i.e. above-mentioned current TDL frames) is introduced.
Further, refering to shown in Fig. 2, so-called special subframe refers to when containing descending pilot frequency in a radio frames
Gap (Downlink Pilot Time Slot, DwPTS), protection time slot (Guard Period, GP), uplink pilot time slot
The subframe of (Uplink Pilot Time Slot, UpPTS), it is generally the case that in TD-SCDMA system, compiles to each subframe
Number when, special subframe is foreclosed, i.e., special subframe does not have subframe number, and in TD-LTE system, matches somebody with somebody in special subframe
Put under 5 and special subframe 6 both of these cases of configuration, be subframe 1 by special subframe numbering.
Specifically, perform step 300 when, base station can by current TDL frames with multiple access TD-SCDMA radio frames (below
Abbreviation TDS frames) in GP original positions alignment time point, as first specify time range starting point, by current TDL frames
Special time slot end time point, as the first end point for specifying time range, then, time range is specified selected first
Inside carry out interferometry.It is specific as shown in Fig. 2 under the application scenarios of TDD-LTE system and TDD-SCDMA system common-modes, the
One specify time range be refer to 1450us-2000us that TDL frame heads start, usual base station performs the position limit of calibration operation
System can otherwise influence the up-downgoing business of base station in the range of this time.
Step 310：Specified in time range above-mentioned first and filter out interference according to the interference measurement results for obtaining in base station
Signal intensity is less than the candidate time section of pre-determined threshold, and the selected prover time point in candidate time section.
Specifically, can be divided three classes for interference according to practical application request by base station, low interference, moderate interference and high level cadre
Disturb, and in the embodiment of the present invention, it refers to low interference threshold that above-mentioned pre-determined threshold is, only when base station is according to interference measurement results,
Determine that first specifies in some of time range candidate time section, neighboring station signal belongs to low interference to the interference that this base station is caused
When, prover time point can be chosen in these candidate times section.Preferably, pre-determined threshold for judging low interference takes
Value could be arranged to 100dbm/180kHz.
Step 320：Base station performs calibration operation when the above-mentioned prover time point of next TDL frame ins is reached.
After the selected prover time point of current TDL frame ins, the effective time of the prover time point is a TDL frame for base station,
So, in next TDL frame ins, after above-mentioned prover time point is reached, base station can start to perform antenna calibration operation.
Based on above-described embodiment, during step 210 is performed, base station is specified above-mentioned first and is selected in time range
Source can pick out prover time using various ways in after the candidate time section of low disturbance state in candidate time section
Point, is specifically including but not limited in the following manner：
First way is：If base station determines itself using TDD special subframes configuration 5, base station is further determining that time
Selecting when include in the time period second to specify time range, specified second and prover time point is selected in time range, wherein, base
The time point that current TDL frame ins are alignd with GP original positions in TDS frames stand as the second starting point for specifying time range, will
The GP end times o'clock are used as the second end point for specifying time range in current TDL frames；
Specifically, refer to shown in Fig. 2, when base station is using TDD special subframes configuration 5, can be by since frame head
The time period of 1450us-1857us is chosen to be second and specifies time range, wherein, 1450us is current TDL frame ins and TDS frames
At the time point of middle GP original positions alignment, 1857us is current TDL frame ins GP end time points.
Why choose in current TDL frames when being specified as second this time period of 1450us-1857us frame head
Between scope, reason is as follows：
Refering to shown in Fig. 2, on the premise of the interference of neighboring station is for low interference：
If neighboring station use TDS standards, in this time period of 1450us-1857us, neighboring station be respectively at GP, UpPTS and
Descending sub frame, when neighboring station is operated in GP, because stagger in frequency from this base station (being given tacit consent to using different frequency ranges-- industry
Network planning criterion), so base station will not be interfered, when neighboring station is operated in UpPTS, due to staggering in frequency, so not
Base station can be interfered, when neighboring station is operated in descending sub frame, although be to send downstream signal, but due to interference signal intensity
Less than the first threshold value, so will not also be interfered to base station.
If neighboring station is using TDL standards and using special subframe configuration 6, adjacent in this time period of 1450us-1857us
Station is respectively at DwPTS and GP, when neighboring station is operated in DwPTS, although be to send downstream signal, but due to interference signal intensity
Less than the first threshold value, so base station will not also be interfered, when neighboring station is operated in GP, due to not sending downstream signal, and
And have the guard time of propagation delay time, so will not be interfered to base station.
The second way is：If base station determines itself using TDD special subframes configuration 6, base station is further determining that time
Selecting when include in the time period the 3rd to specify time range, specified the 3rd and prover time point is selected in time range, wherein, base
Stand time point that current TDL frame ins are alignd with special sub- end position in TDS frames as the 3rd starting for specifying time range
Point, using the GP end times o'clock in current TDL frames as the 3rd end point for specifying time range.
Specifically, refer to shown in Fig. 2, when base station is using TDD special subframes configuration 6, can be by since frame head
The time period of 1650us-1857us is chosen to be the 3rd and specifies time range, wherein, 1650us is current TDL frame ins and TDS frames
At the time point of middle special subframe end position alignment, 1857us is current TDL frame ins GP end time points.
Why choose in current TDL frames when being specified as the 3rd this time period of 1650us-1857us frame head
Between scope, rather than 1650us-1857us is used, allow for base station using special subframe configuration 6 application scenarios under,
Neighboring station signal is possible to can the presence of delay phenomenon, in order to avoid delay information is impacted to base station, therefore, when first is specified
Between the original position of scope postpone 200us, further, when selection this time period of 1650us-1857us specifies as the 3rd
Between scope, reason is as follows：
Refering to shown in Fig. 2, on the premise of the interference of neighboring station is for low interference：
If neighboring station uses TDS standards, in this time period of 1650us-1857us, neighboring station is in descending sub frame, neighboring station
When being operated in descending sub frame, although be to send downstream signal, but due to staggering in frequency, and interference signal intensity is less than first
Threshold value, so will not also be interfered to base station.
If neighboring station is using TDL standards and using special subframe configuration 5, adjacent in this time period of 1650us-1857us
Stand in GP, when neighboring station is operated in GP, due to not sending downstream signal, and have the guard time of propagation delay time, so will not
Base station is interfered.
Based on above-described embodiment, further, if base station is specified in time range first filters out interference signal intensity
After less than the candidate time section of pre-determined threshold, however, it is determined that itself further determines that the candidate using TDD special subframes configuration 5
Do not include above-mentioned second in time period and specify time range, or, however, it is determined that itself is entered using TDD special subframes configuration 6
One step determines that not including the above-mentioned 3rd in candidate time section specifies time range, then further determining that in the candidate time
After including the 4th specified time range, specified the 4th and prover time point is selected in time range；Wherein, the so-called 4th refers to
Scope of fixing time refer to first specify time range in except second specify time range and the 3rd specify time range in addition to when
Between section.
For example, refering to shown in Fig. 2, when base station determines itself to employ special subframe configuration 5, but since TDL frame heads
Higher than pre-determined threshold, (i.e. second specifies time range to be not belonging to candidate to interference signal on this time period of 1450us-1857us
Time period), then can further judge whether the interference signal on this time period of 1857us-2000us that TDL frame heads start is high
In above-mentioned pre-determined threshold, (the i.e. the 4th specifies time model when determining that this time period of 1857us-2000us is in low disturbance state
Enclose and belong to candidate time section), therefrom select prover time point.
Again for example, referring to shown in Fig. 2, when base station determines itself to employ special subframe configuration 6, but since TDL frame heads
This time period of 1650us-1857us on interference signal higher than pre-determined threshold (the i.e. the 3rd specify time range be not belonging to wait
Select the time period), then can further judge whether interference signal on this time period of 1857us-2000us that TDL frame heads start is
Higher than above-mentioned pre-determined threshold, (the i.e. the 4th specifies the time when determining that this time period of 1857us-2000us is in low disturbance state
Scope belongs to candidate time section), therefrom select prover time point.
Further, refering to shown in Fig. 2, if the 4th specified time range is the 1857us- since TDL frame heads
2000us, then this time period is the UpPTS in TDL frames, and in UpPTS, by convention, terminal needs to report detection to base station
With reference signal (Sounding Reference Signal, SRS) signal to detect channel status, now, base station needs to indicate
Each terminal is specified the above-mentioned 4th and SRS signal transmission power is reduced in time range, and reduces the SRS expectation receptions of itself
Power.
In addition to above-mentioned various situations, further, if neighboring station first specify time range in cause moderate interference or
High interference, i.e., first are specified cannot filter out candidate time section of the interference signal intensity less than pre-determined threshold in time range, that
, base station just can only abandon first and specify the time period, then the selected calibration of the regular upstream subframe after first specifies the time period
Time point, preferably, base station needs to select not carrying Physical Random Access Channel (Physical Random Access
Channel, PRACH) and SRS signal regular upstream subframe.
For example, refering to shown in Fig. 2, if base station is specified first does not filter out candidate time section in time range, can be with
Prover time point is selected in first regular upstream subframe (i.e. subframe 2) after special subframe (i.e. subframe 1).
Further, if prover time point is selected in base station in the sub-frame of uplink in current TDL frames, base station is up at this
Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH, also known as PUSCH industry are not dispatched in subframe
Business channel), it is to reach when next TDL frame ins include the sub-frame of uplink of selected calibration measurement point not specifically
Scheduling PUSCH Traffic Channels the, preferably, (N in the n-th subframe reached before the above-mentioned sub-frame of uplink of next TDL frame ins
It is setup parameter, value is positive integer, specific depending on sub-frame configuration specification), Physical Uplink Control Channel is not also dispatched in base station
(Physical Uplink Control Channel, PUCCH, also known as PUCCH channels).Because, in a radio frames
Interior, the instruction sent on the PUCCH channels dispatched in usual n-th subframe is for dispatching the PUSCH industry in n-th+N number of subframe
Business channel, therefore, if base station have selected prover time point in n-th+N number of subframe, can not be dispatched in n-th subframe
PUCCH channels, accordingly, can not dispatch PUSCH Traffic Channels, in this manner it is ensured that have selected school in n-th+N number of subframe
Not transmission services data in the n-th of quasi- time point+N number of subframe, so that influence will not be produced on calibration result.
In practical application, base station may administer multiple cells, i.e., in the presence of the cell at multiple cobasis stations, then base station will ensure
In all cells of local administration, PUSCH channels should not be dispatched in the sub-frame of uplink of above-mentioned selected prover time point.Enter
One step ground, can be communicated between base station and neighboring station using X2 interface, by the mutual working condition of X2 message informings, that
, in this case, base station needs to notify neighboring station on the above-mentioned sub-frame of uplink that have selected prover time point by X2 interface
Also PUSCH channels should not be dispatched.
Based on above-described embodiment, refering to shown in Fig. 4, in the embodiment of the present invention, base station includes measuring unit 40, screening unit
41 and alignment unit 42, wherein,
Measuring unit 40, being specified in time range for first in current TDL frames carries out interferometry, first finger
Scope of fixing time is the partial period in special subframe in current TDL frames；
Screening unit 41, for according to the interference measurement results for obtaining, being specified in time range first and filtering out interference
Signal intensity is less than the candidate time section of pre-determined threshold, and the selected prover time point in candidate time section；
Alignment unit 42, for when the prover time point of next TDL frame ins is reached, performing calibration operation.
Preferably, when carrying out interferometry in the first specified time range in current TDL frames, the measuring unit is used
In：
At the time point that will be alignd with GP original positions in TDS frames in current TDL frames, rising for time range is specified as first
Initial point, by special time slot end time point in current TD-LTE radio frames, as the described first end point for specifying time range；
Being specified in time range selected first carries out interferometry.
Preferably, screening unit 41 is used for：
According to the interference measurement results for obtaining, specified first and interference signal intensity is filtered out in time range less than default
The candidate time section of thresholding；
If it is determined that itself using TDD special subframes configuration 5, then further determine that candidate time section in include the second finger
During scope of fixing time, specified second and prover time point is selected in time range, wherein, screening unit 41 is by current TDL frame ins
The time point alignd with GP original positions in TDS frames, as the second starting point for specifying time range, GP in current TDL frames is tied
Beam time point is used as the second end point for specifying time range；
If it is determined that itself using TDD special subframes configuration 6, then further determine that candidate time section in include the 3rd finger
During scope of fixing time, specified the 3rd and prover time point selected in time range, wherein, screening unit 41 by current TD-LTE without
The time point that line frame in is alignd with special sub- end position in TD-SCDMA radio frames is used as the 3rd starting for specifying time range
Point, using the GP end times o'clock in current TD-LTE radio frames as the 3rd end point for specifying time range.
Preferably, screening unit 41 is further used for：
Time range is specified if it is determined that itself being configured using TDD special subframes and not including second in 5 and candidate time section,
Or, however, it is determined that when itself in TDD special subframes configuration 6 and candidate time section using the 3rd specified time range is not included,
Then when further determining that include the 4th in candidate time section specifies time range, being specified from the 4th and school is selected in time range
Quasi- time point；Wherein, the 4th time range is specified to be specified in time range except second specifies time range and the 3rd finger for first
Time period outside scope of fixing time.
Base station further includes：
First scheduling unit 43, the process for selecting prover time point in the 4th specified time period in screening unit 41
In, indicate each terminal to specify the transmission power of reduction SRS in the time period the 4th, and reduce the SRS expectation receptions of itself
Power.
Screening unit 41 is further used for：
If according to the interference measurement results for obtaining, being specified first and not filtering out interference signal intensity and be less than in time range
The candidate time section of pre-determined threshold, then select prover time point on the sub-frame of uplink after first specifies time range.
Preferably, screening unit 41 is used for：
After specifying time range first, the regular upstream subframe for not carrying Physical Random Access Channel and SRS is filtered out,
And therefrom select prover time point.
Base station further includes：、
Second scheduling unit 44, for being selected in a sub-frame of uplink in current TD-LTE radio frames when screening unit 41
During prover time point, in all cells of local administration, do not dispatched on the sub-frame of uplink in next TD-LTE radio frames
Physical Uplink Control Channel is not dispatched on Physical Uplink Shared Channel, and n-th subframe before sub-frame of uplink.
Preferably, the second scheduling unit 44 is further used for：
Adjacent base station is notified by X2 interface, is not dispatched physically on the sub-frame of uplink in next TD-LTE radio frames
Physical Uplink Control Channel is not dispatched in row shared channel, and n-th subframe before sub-frame of uplink.
In sum, in the embodiment of the present invention, devise brand-new calibration interference and hide mechanism, selected calibration is being entered in base station
During time point, interferometry is first carried out within the special time, pick out candidate time of the interference signal intensity less than pre-determined threshold
Section, then, picks out prover time point, and carry out antenna calibration based on the prover time point in candidate time Duan Zhongzai.So,
Can be disturbed by calculating, select a relatively minimum position of annoyance level and perform calibration operation, so as to farthest drop
The influence that low interference is calculated calibration factor, so as to ensure the performance of TDD base station beam excipients.
Further, if not choosing satisfactory candidate time section in special time slot, can with regular upstream
Subframe scheduling is calibrated, to ensure the normal execution of calibration operation.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the present invention can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.So, if these modifications of the embodiment of the present invention and modification belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (16)
1. a kind of antenna calibration method, it is characterised in that including：
Base station carries out interferometry in the first specified time range in current time-division Long Term Evolution TD-LTE radio frames, described
First to specify time range be the partial period in the current TD-LTE radio frames in special subframe；
Specified described first and filter out interference signal intensity and be less than in time range according to the interference measurement results for obtaining in base station
The candidate time section of pre-determined threshold；
If base station determines itself using TDD special subframe configuration 5, base station is further determining that the candidate time
When including the second specified time range in section, specified described second and prover time point is selected in time range, wherein, base station
The time point alignd with GP original positions in TD-SCDMA radio frames in current TD-LTE radio frames is specified as described second
The starting point of time range, using GP end times point in current TD-LTE radio frames as the described second knot for specifying time range
Spot；
If base station determines itself using TDD special subframes configuration 6, base station is included in candidate time section further determining that
When thering is the 3rd to specify time range, specified the described 3rd and prover time point is selected in time range, wherein, base station will be current
The time point alignd with special subframe end position in TD-SCDMA radio frames in TD-LTE radio frames specifies as the described 3rd
The starting point of time range, using GP end times point in current TD-LTE radio frames as the described 3rd knot for specifying time range
Spot；
When the prover time point of the base station in next TD-LTE radio frames is reached, calibration operation is performed.
2. the method for claim 1, it is characterised in that first specify the time in current TD-LTE radio frames in base station
In the range of carry out interferometry, including：
Base station will protect time slot GP startings in current TD-LTE radio frames with time-division duplex TD-SCDMA radio frames
The time point of aligned in position, as the described first starting point for specifying time range, when will be special in current TD-LTE radio frames
Gap end time point, as the described first end point for specifying time range；
Specified in time range selected first and carry out interferometry in base station.
3. the method for claim 1, it is characterised in that further include：
If base station determines that itself is configured using TDD special subframes did not included for the second specified time in 5 and candidate time section
Scope, or, if base station determines that itself is configured in 6 and candidate time section using TDD special subframes does not include the 3rd finger
During scope of fixing time, then base station further determine that include the 4th specified time range in the candidate time section when, from institute
State the 4th and specify selected prover time point in time range；Wherein, the described 4th time range is specified to specify time model for first
Time period in enclosing in addition to described second specifies time range and the 3rd specifies time range.
4. method as claimed in claim 3, it is characterised in that further include：
During specifying and select prover time point in time range the 4th, each terminal is indicated to specify the time the described 4th
In the range of reduce the transmission power of detection reference signal SRS, and the SRS expectation received powers for reducing itself.
5. the method as described in claim any one of 1-4, it is characterised in that further include：
If base station is specified in time range described first and is not filtered out interference signal intensity according to the interference measurement results for obtaining
Less than the candidate time section of pre-determined threshold, then prover time is selected on the sub-frame of uplink after described first specifies time range
Point.
6. method as claimed in claim 5, it is characterised in that base station is on the sub-frame of uplink after first specifies time range
Selected prover time point, including：
After time range is specified in base station first, the regular upstream subframe for not carrying Physical Random Access Channel and SRS is filtered out,
And therefrom select prover time point.
7. method as claimed in claim 5, it is characterised in that further include：
If prover time point is selected in base station in the sub-frame of uplink in current TD-LTE radio frames, in all of local administration
In cell, Physical Uplink Shared Channel is not dispatched on the sub-frame of uplink in next TD-LTE radio frames, and in institute
Physical Uplink Control Channel is not dispatched in n-th subframe before stating sub-frame of uplink.
8. method as claimed in claim 7, it is characterised in that further include：
Base station notifies adjacent base station by X2 interface, and thing is not dispatched on the sub-frame of uplink in next TD-LTE radio frames
Reason Uplink Shared Channel, and do not dispatch Physical Uplink Control Channel in n-th subframe before the sub-frame of uplink.
9. a kind of antenna calibration equipment, it is characterised in that including：
Measuring unit, specifies for first in current time-division Long Term Evolution TD-LTE radio frames and is disturbed in time range
Measurement, described first to specify time range be the partial period in the current TD-LTE radio frames in special subframe；
Screening unit, for according to the interference measurement results for obtaining, being specified described first and interference letter being filtered out in time range
The candidate time section of number intensity less than pre-determined threshold；If it is determined that itself is then being entered using TDD special subframe configuration 5
When one step determines that including second in the candidate time section specifies time range, specified in time range described second and selected
Prover time point, wherein, the screening unit by current TD-LTE radio frames with GP original positions in TD-SCDMA radio frames
The time point of alignment as described second specify time range starting point, by GP end time points in current TD-LTE radio frames
As the described second end point for specifying time range；If it is determined that itself is using TDD special subframes configuration 6, then further true
When including the 3rd specified time range in the fixed candidate time section, when the described 3rd specifies and selectes calibration in time range
Between point, wherein, the screening unit by current TD-LTE radio frames with special subframe end position in TD-SCDMA radio frames
The time point of alignment as the described 3rd specify time range starting point, by GP end time points in current TD-LTE radio frames
As the described 3rd end point for specifying time range；
Alignment unit, when being reached for the prover time point in next TD-LTE radio frames, performs calibration operation.
10. device as claimed in claim 9, it is characterised in that in current TD-LTE radio frames first specifies time model
When carrying out interferometry in enclosing, the measuring unit is used for：
In current TD-LTE radio frames time slot GP original positions will be protected with time-division duplex TD-SCDMA radio frames
The time point of alignment, as the described first starting point for specifying time range, by special time slot knot in current TD-LTE radio frames
Beam time point, as the described first end point for specifying time range；
Being specified in time range selected first carries out interferometry.
11. devices as claimed in claim 9, it is characterised in that the screening unit is further used for：
Time range is specified if it is determined that itself being configured using TDD special subframes and not including second in 5 and candidate time section,
Or, however, it is determined that itself configured using TDD special subframes and do not include the 3rd specified time range in 6 and candidate time section
When, then when further determining that include the 4th in the candidate time section specifies time range, the time is specified from the described 4th
In the range of select prover time point；Wherein, the described 4th time range is specified to be specified in time range except described second for first
Specify the time period outside time range and the 3rd specified time range.
12. devices as claimed in claim 11, it is characterised in that further include：
First scheduling unit, for specifying the process that prover time point is selected in time range the 4th in the screening unit
In, indicate each terminal to specify the transmission power of reduction detection reference signal SRS in time range the described 4th, and reduce
The SRS expectation received powers of itself.
13. device as described in claim any one of 9-12, it is characterised in that the screening unit is further used for：
If according to the interference measurement results for obtaining, being specified described first and not filtering out interference signal intensity and be less than in time range
The candidate time section of pre-determined threshold, then select prover time point on the sub-frame of uplink after described first specifies time range.
14. devices as claimed in claim 13, it is characterised in that selected on the sub-frame of uplink after first specifies time range
When determining prover time point, the screening unit is used for：
After specifying time range first, the regular upstream subframe for not carrying Physical Random Access Channel and SRS is filtered out, and from
In select prover time point.
15. devices as claimed in claim 13, it is characterised in that further include：、
Second scheduling unit, for selecting calibration in a sub-frame of uplink in current TD-LTE radio frames when the screening unit
During time point, in all cells of local administration, do not dispatched on the sub-frame of uplink in next TD-LTE radio frames
Physical Uplink Control Channel is not dispatched on Physical Uplink Shared Channel, and n-th subframe before the sub-frame of uplink.
16. devices as claimed in claim 15, it is characterised in that second scheduling unit is further used for：
Adjacent base station is notified by X2 interface, is not dispatched physically on the sub-frame of uplink in next TD-LTE radio frames
Physical Uplink Control Channel is not dispatched in row shared channel, and n-th subframe before the sub-frame of uplink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196861.6A CN104811255B (en) | 2015-04-23 | 2015-04-23 | A kind of antenna calibration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196861.6A CN104811255B (en) | 2015-04-23 | 2015-04-23 | A kind of antenna calibration method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104811255A CN104811255A (en) | 2015-07-29 |
| CN104811255B true CN104811255B (en) | 2017-06-23 |
Family
ID=53695788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510196861.6A Active CN104811255B (en) | 2015-04-23 | 2015-04-23 | A kind of antenna calibration method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104811255B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471523B (en) * | 2015-11-17 | 2017-09-08 | 东南大学 | The collaboration diversity reciprocity calibration method of multiaerial system |
| WO2018119792A1 (en) * | 2016-12-28 | 2018-07-05 | 华为技术有限公司 | Antenna calibration method, device, and base station |
| CN114189291B (en) * | 2020-09-15 | 2023-12-05 | 北京佰才邦技术股份有限公司 | Antenna calibration method, remote radio unit and baseband processing unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790636A (en) * | 2011-05-17 | 2012-11-21 | 普天信息技术研究院有限公司 | Method for transmitting intelligent antenna calibration sequence |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546205B (en) * | 2010-05-14 | 2016-04-20 | 电信科学技术研究院 | A kind of method of antenna calibration position dynamic conditioning and device |
| CN102244531B (en) * | 2010-05-14 | 2014-08-13 | 电信科学技术研究院 | Method and device for dynamically regulating antenna calibration position |
| CN102324961B (en) * | 2011-05-24 | 2014-06-18 | 大唐移动通信设备有限公司 | Method and device for determining calibration position of receiving direction antenna |
| CN102324944B (en) * | 2011-06-15 | 2014-06-04 | 大唐移动通信设备有限公司 | Antenna calibration method and device |
-
2015
- 2015-04-23 CN CN201510196861.6A patent/CN104811255B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790636A (en) * | 2011-05-17 | 2012-11-21 | 普天信息技术研究院有限公司 | Method for transmitting intelligent antenna calibration sequence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104811255A (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108289311B (en) | Interference measuring method and device and timing deviation measuring method | |
| CN105704834B (en) | The configuration method of lead code, sending method and relevant device on unauthorized carrier wave | |
| US10045378B2 (en) | Channel monitoring method and device | |
| CN106465138A (en) | Method and apparatus for transmitting LTE waveforms in shared spectrum by carrier sensing | |
| CN102215534B (en) | Sub-frame configuration coordination approach and device thereof between a kind of TDD cell | |
| WO2017076090A1 (en) | Signal processing method and base station | |
| US10149312B2 (en) | Resource scheduling method and apparatus | |
| CN105634699A (en) | Carrier selecting method and device and access point | |
| CN109565846A (en) | For information transmission and the received method and apparatus of information | |
| CN108737949A (en) | Bluetooth equipment and its method for avoiding WiFi system from interfering and Bluetooth system | |
| CN107079483B (en) | Data transmission method, system and equipment with base station function | |
| CN104811255B (en) | A kind of antenna calibration method and device | |
| CN110167173A (en) | A kind of sending method of upstream data, method of reseptance and device | |
| EP3355635B1 (en) | Multiplexing sending and receiving method and device for discovery signal and physical downlink shared channel | |
| US20230309124A1 (en) | Method and Apparatus for Positioning on Sidelink SL, and Terminal | |
| CN110100399A (en) | Determination method, apparatus, equipment and the storage medium of Channel Detection mechanism | |
| CN106455108B (en) | listen-before-talk method and device | |
| EP3054718A1 (en) | Wireless communication method and device | |
| CN108141855A (en) | For the method and apparatus for performing uplink transmission and receiving | |
| JP2021510242A (en) | Method and device | |
| EP4021110A1 (en) | Control channel detection capability determining method and apparatus, device, and medium | |
| US20220263615A1 (en) | Synchronization signaling block compatible interference coordination patterns to reduce interference in wireless networks | |
| CN108882248A (en) | LTE extra long distance user's accidental access method based on sector mark | |
| CN114205014B (en) | Cross time slot interference processing method, base station, device and medium | |
| US10764850B2 (en) | Information transceiving method, apparatus, and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |