CN107231694A - The method of adjustment and system of downlink transfer - Google Patents
The method of adjustment and system of downlink transfer Download PDFInfo
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- CN107231694A CN107231694A CN201610176671.2A CN201610176671A CN107231694A CN 107231694 A CN107231694 A CN 107231694A CN 201610176671 A CN201610176671 A CN 201610176671A CN 107231694 A CN107231694 A CN 107231694A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of method of adjustment of downlink transfer and system.According to methods described, the system is received come the detection reference signal of self terminal according to the time slot rule of pre- coordination using the setting ascending time slot configured in down channel；The down channel environment reflected based on the detection reference signal received adjusts the transfer resource of the down channel, and according to the transfer resource adjusted, carries out data transmission with the terminal.The present invention can solve the problem that because feedback overhead is too high caused by feedback of channel information, the problem of expense increases severely.
Description
Technical field
The present embodiments relate to the method for adjustment and system of the communication technology, more particularly to a kind of downlink transfer.
Background technology
In wireless communications in order to pursue higher transmission rate, current base station use large-scale antenna array with
Increase number of antennas, greatly increase channel capacity.At the same time, in order to obtain the bigger channel free degree,
The channel of each antenna port of terminal-pair is needed to measure and reporting base station, base station carries out the money of user accordingly
Source scheduling, shaping of wave beam etc..Need to increase substantial amounts of RS while the port number increase of antenna
(reference signal, pilot signal) resource and great feedback overhead.
It is generally adopted by configuring RS to terminal in current FDD system (frequency division duplex system), passes through end
End measurement RS carries out channel estimation and quantified, so as to feed back to base station end.Therefore when antenna port increase
Need to configure more RS, this causes terminal to report RS to need to take the expense of more up channels.
Accordingly, it would be desirable to be improved to prior art.
The content of the invention
The present invention provides a kind of method of adjustment and system of downlink transfer, too high to solve up channel occupancy,
The problem of expense increases severely.
In a first aspect, the embodiments of the invention provide a kind of method of adjustment of downlink transfer, including：According to pre-
The time slot rule of coordination, is received using the setting ascending time slot configured in down channel and joined come the detection of self terminal
Examine signal；The down channel environment reflected based on the detection reference signal received adjusts the descending letter
The transfer resource in road, and according to the transfer resource adjusted, carry out data transmission with the terminal.
Second aspect, the embodiment of the present invention additionally provides a kind of adjustment system of downlink transfer, including：Signal
Receiving module, for the time slot rule according to pre- coordination, utilizes the setting ascending time slot configured in down channel
Receive the detection reference signal for carrying out self terminal；Adjusting module, for based on the detection reference signal institute received
The down channel environment of reflection carrys out the transfer resource that transfer resource adjusts the down channel, and according to being adjusted
Transfer resource, carry out data transmission with the terminal.
The present invention obtains each end-probing reference signal by using down channel, can solve the problem that due to channel letter
Feedback overhead is too high caused by breath feedback, the problem of expense increases severely.
Brief description of the drawings
Fig. 1 is the flow chart of the method for adjustment of the downlink transfer in the embodiment of the present invention one；
Fig. 2 is the flow chart of the method for adjustment of the downlink transfer in the embodiment of the present invention two；
Fig. 3 is the structural representation of the adjustment system of the downlink transfer in the embodiment of the present invention three；
Fig. 4 is the structural representation of the adjustment system of the downlink transfer in the embodiment of the present invention four.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the present invention, rather than limitation of the invention.Also need in addition
It is noted that illustrate only part related to the present invention for the ease of description, in accompanying drawing and not all knot
Structure.
Embodiment one
Fig. 1 is the flow chart of the method for adjustment for the downlink transfer that the embodiment of the present invention one is provided, and the present embodiment can
Suitable for down channel quality of the base station according to each terminal, the transfer resource of the corresponding down channel of adjustment in time
Situation, this method can specifically include following steps by being performed installed in the adjustment system of base station side：
Step S110, according to pre- coordination time slot rule, using the setting configured in down channel it is up when
Gap receives the detection reference signal for carrying out self terminal.
Specifically, the adjustment system utilizes the top signaling (such as RRC signaling) with each terminal to preset
Time slot rule be sent to terminal.Terminal determines to configure in correspondence down channel according to the time slot rule received
Setting ascending time slot, and during the ascending time slot upload detection reference signal (Sounding RS).
Wherein, the time slot rule includes but is not limited to：The periodicity collocating uplink time slot in down channel
Regular and the aperiodicity collocating uplink time slot in down channel rule.Wherein, the periodic rule
Then include：The time cycle of detection reference signal is regularly uploaded in down channel, and/or in down channel
The middle initial time for uploading detection reference signal.The acyclic rule includes：On in down channel
Pass the initial time of detection reference signal.For example, the adjustment system can after time slot rule is sent,
When reaching the initial time in the time slot rule, the detection reference signal for carrying out self terminal is received.Equally,
Terminal sends and visited in the initial time during the time slot rule is reached after receiving the time slot rule
Survey reference signal.So so that can be utilized between the adjustment system and terminal up in down channel
Time slot transmits the detection reference signal.
Wherein, the ascending time slot includes：The time interval of protection and transmission are visited needed for up-downgoing switching
Survey the time interval of reference signal.
After the detection reference signal of terminal offer is received, the adjustment system performs step S120.
Step S120, the down channel environment reflected based on the detection reference signal received are to adjust
The transfer resource of down channel is stated, and according to the transfer resource adjusted, is carried out data transmission with the terminal.
Wherein, the transfer resource includes but is not limited to：Transmit the number of plies, precoding vectors and transmit power
At least one of.
Specifically, the adjustment system obtains transmission matrix H according to the detection reference signal received, then right
The transmission matrix H carries out singular value conversion, obtains each channel gain after channel parallelizationWherein,
K ∈ { 1 ..., N }, N are for integer and more than or equal to 1.Resulting each layer channel gain is substituted into default adjust again
Integral mould, when calculating transfer resource after obtained adjustment result corresponds to adjustment, then according to the biography after adjustment
Defeated resource carries out data transmission with the terminal.
In one embodiment, under the adjustment system is reflected based on the detection reference signal received
Row channel circumstance includes to adjust the mode of the transfer resource of the down channel：Step S121, S122.
It is preferred that can also include：S123 and S124.
Step S121, based on the detection reference signal received, determine that each layer channel in down channel increases
Benefit.
This step can be regarded as obtaining corresponding transmission matrix H, then root according to the detection reference signal received
According to default because left unitary matrice U and right unitary matrice V is to transmission matrix H progress singular value decompositions,
Obtain each channel gain after channel parallelizationWherein, in order to avoid waste power, the adjustment system
The channel gain less than preset gain threshold value can be rejected, and performs using remaining channel gain step S122.
Step S122, the cumulative comparative result than with pre-determined threshold according to adjacent channel gain, determine phase
Answer the transmission number of plies of down channel.
Specifically, the adjustment system is utilizedFormula, it is determined that under corresponding
The transmission number of plies N of row channellayer.Wherein, p1For pre-determined threshold, the thresholding can be empirical value or pass through it
His mode measured value.When the cumulative ratio for calculating adjacent channel gain meets above-mentioned formula, it is determined that right
Answer the transmission number of plies of channel.
Optionally, with the also step S123 of step S121 parallel executions.
Step S123, CQI (channel quality instruction) and ACK (the confirmation word for collecting the terminal transmission
Symbol).
Specifically, the adjustment system obtains CQI and ACK that terminal is sent by existing up channel,
And preserve into historical data, for when the adjustment system obtains the transmission number of plies, based on history report it is each
CQI, each ACK and the identified transmission number of plies, finely tune the transmission number of plies of corresponding down channel.
Here, the adjustment system can report CQI and ACK according to the history for including predetermined number, with
And the transmission number of plies adjustment model constructed by the resulting transmission number of plies is come the transmission number of plies obtained by adjusting, and
Perform step S124.
Step S124, the preceding several columns by the right unitary matrice corresponding to default transmission matrix, as corresponding
The precoding vectors of down channel, wherein, the columns of the right unitary matrice is related to the identified transmission number of plies.
Here, the left tenth of the twelve Earthly Branches square due to each down channel of correspondence provided with transmission matrix H and for singular value decomposition
Battle array U, and right unitary matrice V, then the adjustment system is by the preceding N of matrix VlayerRow, which are used as, to be used for and corresponding end
The precoding vectors of end data transmission, and carry out data biography according to resulting precoding vectors and the terminal
It is defeated.
In another preferred scheme, what the adjustment system was reflected based on the detection reference signal received
Down channel environment includes to adjust the mode of the transfer resource of the down channel：Step S125, S126.
It should be noted that step S125, S126 can be performed individually, also can be after step s 122
Perform, can also carry out after step S124 parallel with step S123-S124.
Step S125, the down channel environment reflected based on the detection reference signal received and terminal
The interference statistic information of the down channel provided, estimates channel bearing ability.
Here, terminal also measures the interference second-order statisticses Rn of down channel, and report the adjustment
System, then the adjustment system determine transmission matrix not only according to channel where detection reference signal, also obtain
The statistical information Rn of down channel.In this way, the adjustment system estimates sky using default estimation function
Between the supported number of plies, the channel bearing ability such as the SINR (signal to noise ratio) of each layer.
Step S126, based on estimated channel bearing capability distribution transmit power.
Here, the adjustment system uses water injection power allocation algorithm or constant power allocation algorithm, according to described
The power of each layer of channel bearing capability distribution.
The technical scheme of the present embodiment, obtains end-probing reference signal by using down channel, can solve
Certainly up channel occupancy is too high, the problem of expense increases severely；Meanwhile, money is transmitted by detection reference signal
Source adjusts the transfer resource of down channel, and message transmission rate can be effectively adjusted in time；In addition, under
The measurement that the ascending time slot of row channel carries out down channel can obtain more accurate channel parameter, so as to enter
The more accurate physical resource scheduling of row；And, down channel is carried out using the ascending time slot of down channel
The mode fed back relative to traditional PMI/RI is measured, with lower time delay.
On the basis of above-mentioned technical proposal, using detection reference signal adjust precoding vectors, be conducive to by
Coded treatment is carried out to signal according to channel circumstance.
In addition, by estimating that the bearing capacity of channel adjusts the transmit power to terminal, signal is increased with this
Anti-interference.
Embodiment two
Fig. 2 is the method for adjustment for the downlink transfer that the embodiment of the present invention two is provided.It is different from the various embodiments described above
, by base station connects multiple terminals (terminal quantity in cell that i.e. base station is covered is multiple) simultaneously,
In order to prevent base station side from obscuring the detection reference signal that each terminal is provided, before step S110 is performed,
Also perform step S100.
Step S100, the Format Series Lines for each terminal distribution detection reference signal, and be sent to corresponding
Terminal, to indicate that corresponding terminal sends detection reference signal according to the Format Series Lines received.
Here, the Format Series Lines includes but is not limited to：Using ZC sequences.Wherein, different terminals correspondence
Multiple terminals for distributing in different root sequence and cyclically shifted sequences, same cell of ZC sequences can be with
Multiplexing.
It is corresponding, after step silo, in addition to：Step S111：Parse each detection reference signal
Format Series Lines, to determine the detection reference signal corresponding to each terminal.
For example, the adjustment system is by matching the root sequence and cyclically shifted sequences of ZC sequences, to determine
The terminal corresponding to detection reference signal distributed.Again by performing step to each detection reference signal
S120, to adjust the transfer resource of corresponding down channel.
The technical scheme of the present embodiment, by distributing different Format Series Lineses for the detection reference signal of terminal,
It can solve the problem that while the problem of being interfered with each other when adjusting the transfer resource of multiple terminals.
Embodiment three
Fig. 3 is the structural representation of the adjustment system for the downlink transfer that the embodiment of the present invention three is provided, this implementation
Example is applicable to down channel quality of the base station according to each terminal, in time the transmission money of adjustment correspondence down channel
The situation in source, the adjustment system 1 includes：Signal receiving module 11, adjusting module 12.
The signal receiving module 11 is used for the time slot rule according to pre- coordination, is configured using in down channel
Setting ascending time slot receive come self terminal detection reference signal.
Specifically, the signal receiving module 11 utilizes the top signaling (such as RRC signaling) with each terminal
Default time slot rule is sent to terminal.Terminal determines correspondence down channel according to the time slot rule received
The setting ascending time slot of middle configuration, and the upload detection reference signal (Sounding during the ascending time slot
RS)。
Wherein, the time slot rule includes but is not limited to：The periodicity collocating uplink time slot in down channel
Regular and the aperiodicity collocating uplink time slot in down channel rule.Wherein, the periodic rule
Then include：The time cycle of detection reference signal is regularly uploaded in down channel, and/or in down channel
The middle initial time for uploading detection reference signal.The acyclic rule includes：On in down channel
Pass the initial time of detection reference signal.For example, the signal receiving module 11 can be from the transmission time slot
After rule, when reaching the initial time in the time slot rule, the detection reference for carrying out self terminal is received
Signal.Equally, terminal is in the initial time during the time slot rule is reached after receiving the time slot rule
Start, send detection reference signal.So so that can between the signal receiving module 11 and terminal
The detection reference signal is transmitted using the ascending time slot in down channel.
Wherein, the ascending time slot includes：The time interval of protection and transmission are visited needed for up-downgoing switching
Survey the time interval of reference signal.
After the detection reference signal of terminal offer is received, the signal receiving module 11 starts adjustment mould
Block 12.
The adjusting module 12 is used for the down channel environment reflected based on the detection reference signal received
To adjust the transfer resource of the down channel, and according to the transfer resource adjusted, carried out with the terminal
Data transfer.
Wherein, the transfer resource includes but is not limited to：Transmit the number of plies, precoding vectors and transmit power
At least one of.
Specifically, the adjusting module 12 obtains transmission matrix H according to the detection reference signal received,
Singular value conversion is carried out to the transmission matrix H again, each channel gain after channel parallelization is obtained
Wherein, k ∈ { 1 ..., N }, N are for integer and more than or equal to 1.Resulting each layer channel gain is substituted into again pre-
If adjustment model, when calculating transfer resource after obtained adjustment result corresponds to adjust, then according to adjustment
Transfer resource afterwards carries out data transmission with the terminal.
In one embodiment, the adjusting module 12 includes：First adjustment submodule, the second adjustment
Submodule, it is preferable that also include：3rd adjustment submodule and the 4th adjustment submodule.(being unillustrated)
The first adjustment submodule is used for based on the detection reference signal received, determines in down channel
Each layer channel gain.
The course of work of this submodule can be regarded as obtaining corresponding biography according to the detection reference signal received
Defeated matrix H, further according to default because left unitary matrice U and right unitary matrice V enters to the transmission matrix H
Row singular value decomposition, obtains each channel gain after channel parallelizationWherein, in order to avoid wasting power,
The first adjustment submodule can reject the channel gain less than preset gain threshold value, and utilize remaining channel
Gain performs the second adjustment submodule.
The second adjustment submodule is used for the cumulative comparison than with pre-determined threshold according to adjacent channel gain
As a result, it is determined that the transmission number of plies of corresponding down channel.
Specifically, the second adjustment submodule is utilizedFormula, it is determined that
The transmission number of plies N of corresponding down channellayer.Wherein, p1For pre-determined threshold, the thresholding can for empirical value or
Measured value by other means.When the cumulative ratio for calculating adjacent channel gain meets above-mentioned formula, then
Determine the transmission number of plies of respective channels.
Optionally, with also the 4th adjustment submodule of the first adjustment submodule parallel execution.
The 4th adjustment submodule be used to collecting the CQI (channel quality instruction) that the terminal sends and
ACK (confirmation character).
Specifically, it is described 4th adjustment submodule by existing up channel obtain terminal send CQI and
ACK, and historical data is preserved into, for when the described second adjustment submodule obtains the transmission number of plies, being based on
Each CQI, each ACK and the identified transmission number of plies that history is reported, finely tune the transport layer of corresponding down channel
Number.
Here, the second adjustment submodule can report CQI and ACK according to the history for including predetermined number,
And the transmission number of plies adjustment model constructed by the resulting transmission number of plies is come the transmission number of plies obtained by adjusting,
And perform the 3rd adjustment submodule.
The 3rd adjustment submodule is used for will be some before the right unitary matrice corresponding to default transmission matrix
Row, as the precoding vectors of corresponding down channel, wherein, the columns of the right unitary matrice with it is identified
Transmit the number of plies related.
Here, the left tenth of the twelve Earthly Branches square due to each down channel of correspondence provided with transmission matrix H and for singular value decomposition
Battle array U, and right unitary matrice V, then the described 3rd adjust submodule by the preceding N of matrix VlayerRow as be used for
The precoding vectors of corresponding terminal data transfer, and carried out according to resulting precoding vectors and the terminal
Data transfer.
In another preferred scheme, the adjusting module 12 includes：5th adjustment submodule, the 6th adjust
Whole submodule.(being unillustrated)
It should be noted that the 5th adjustment submodule, the 6th adjustment submodule can be performed individually, also may be used
Performed parallel with the 4th adjustment submodule, the 3rd adjustment submodule after the second adjustment submodule, can be with
Perform after the 3rd adjustment submodule.
The 5th adjustment submodule is used for the down channel reflected based on the detection reference signal received
The interference statistic information for the down channel that environment and each terminal are provided, estimates channel bearing ability.
Here, terminal also measures the interference second-order statisticses Rn of down channel, and report described
5th adjustment submodule, then the 5th adjustment submodule is not only according to channel determination where detection reference signal
Transmission matrix, also obtains the statistical information Rn of down channel.In this way, the 5th adjustment submodule is utilized
Default estimation function carrys out the supported number of plies of estimation space, and the channel such as SINR (signal to noise ratio) of each layer is held
Loading capability.
The 6th adjustment submodule is used for based on estimated channel bearing capability distribution transmit power.
Here, the 6th adjustment submodule uses water injection power allocation algorithm or constant power allocation algorithm, press
According to the power of each layer of channel bearing capability distribution.
The technical scheme of the present embodiment, obtains end-probing reference signal by using down channel, can solve
Certainly up channel occupancy is too high, the problem of expense increases severely；Meanwhile, money is transmitted by detection reference signal
Source adjusts the transfer resource of down channel, and message transmission rate can be effectively adjusted in time；In addition, under
The measurement that the ascending time slot of row channel carries out down channel can obtain more accurate channel parameter, so as to enter
The more accurate physical resource scheduling of row；And, down channel is carried out using the ascending time slot of down channel
The mode fed back relative to traditional PMI/RI is measured, with lower time delay.
On the basis of above-mentioned technical proposal, using detection reference signal adjust precoding vectors, be conducive to by
Coded treatment is carried out to signal according to channel circumstance.
In addition, by estimating that the bearing capacity of channel adjusts the transmit power to terminal, signal is increased with this
Anti-interference.
Example IV
Fig. 4 is the adjustment system 1 for the downlink transfer that the embodiment of the present invention four is provided.With the various embodiments described above not
With by base station connects multiple terminals simultaneously, (terminal quantity in cell that i.e. base station is covered is many
It is individual), in order to prevent base station side from obscuring the detection reference signal that each terminal is provided, the adjustment system 1 is also
Including：Distribute module 13, is performed before signal receiving module 11.
The distribute module 13 is used for the Format Series Lines for each terminal distribution detection reference signal, and sends
To corresponding terminal, to indicate that corresponding terminal sends detection reference signal according to the Format Series Lines received.
Here, the Format Series Lines includes but is not limited to：Using ZC sequences.Wherein, different terminals correspondence
Multiple terminals for distributing in different root sequence and cyclically shifted sequences, same cell of ZC sequences can be with
Multiplexing.
Corresponding, the signal receiving module 11 is additionally operable to parse the Format Series Lines of each detection reference signal,
To determine the detection reference signal corresponding to each terminal.
For example, the signal receiving module 11 is by matching the root sequence and cyclically shifted sequences of ZC sequences,
To determine the terminal corresponding to distributed detection reference signal.Visited again by adjusting module 12 according to each
The down channel environment that reference signal is reflected is surveyed, to adjust the transfer resource of corresponding down channel.
The technical scheme of the present embodiment, by distributing different Format Series Lineses for the detection reference signal of terminal,
It can solve the problem that while the problem of being interfered with each other when adjusting the transfer resource of multiple terminals.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.Those skilled in the art
It will be appreciated that the invention is not restricted to specific embodiment described here, can enter for a person skilled in the art
Row it is various it is obvious change, readjust and substitute without departing from protection scope of the present invention.Therefore, though
So the present invention is described in further detail by above example, but the present invention be not limited only to
Upper embodiment, without departing from the inventive concept, can also include other more equivalent embodiments,
And the scope of the present invention is determined by scope of the appended claims.
Claims (16)
1. a kind of method of adjustment of downlink transfer, it is characterised in that including：
According to the time slot rule of pre- coordination, received using the setting ascending time slot configured in down channel from eventually
The detection reference signal at end；
The down channel environment that is reflected based on the detection reference signal received adjusts the down channel
Transfer resource, and according to the transfer resource adjusted, carry out data transmission with each terminal.
2. the method for adjustment of downlink transfer according to claim 1, it is characterised in that positioned at same
The terminal quantity of cell is multiple, then in the time slot rule according to pre- coordination, utilizes what is configured in down channel
Ascending time slot is set to receive before carrying out the detection reference signal of self terminal, in addition to：
For the Format Series Lines of each terminal distribution detection reference signal, and corresponding terminal is sent to, to indicate
Corresponding terminal sends detection reference signal according to the Format Series Lines received；
It is corresponding, in the time slot rule according to pre- coordination, utilize the setting ascending time slot configured in down channel
Receive and come after the detection reference signal of self terminal, in addition to：
The Format Series Lines of each detection reference signal is parsed, to determine the detection reference signal corresponding to each terminal.
3. the method for adjustment of downlink transfer according to claim 1, it is characterised in that the time slot
Rule includes：The time cycle of detection reference signal is regularly uploaded in down channel, and/or in descending letter
The initial time of detection reference signal is uploaded in road.
4. the method for adjustment of downlink transfer according to claim 1, it is characterised in that the transmission
Resource includes：Transmit at least one of the number of plies, precoding vectors and transmit power.
5. the method for adjustment of the downlink transfer according to claim 1 or 4, it is characterised in that described
The down channel environment that is reflected based on the detection reference signal received adjusts the biography of the down channel
Defeated resource includes：
Based on the detection reference signal received, each layer channel gain in down channel is determined；
According to adjacent channel gain it is cumulative than and pre-determined threshold comparative result, it is determined that corresponding down channel
Transmit the number of plies.
6. the method for adjustment of downlink transfer according to claim 5, it is characterised in that according to phase
Side channel gain it is cumulative than and pre-determined threshold comparative result, determine the down channel the transmission number of plies it
Afterwards, in addition to：
By the preceding several columns of the right unitary matrice corresponding to default transmission matrix, the pre- of corresponding down channel is used as
Coded vector, wherein, the columns of the right unitary matrice is related to the identified transmission number of plies.
7. the method for adjustment of downlink transfer according to claim 5, it is characterised in that also include：
Collect CQI and ACK that the terminal is sent；
Corresponding, the cumulative comparative result than with pre-determined threshold of the gain according to adjacent channel determines phase
Answering the transmission number of plies of down channel includes：
Each CQI, each ACK that are reported based on history and the identified transmission number of plies, finely tune corresponding down channel
The transmission number of plies.
8. the method for adjustment of downlink transfer according to claim 4, it is characterised in that based on being connect
The down channel environment that the detection reference signal of receipts is reflected adjusts the transfer resource bag of the down channel
Include：
It is descending that the down channel environment and terminal reflected based on the detection reference signal received is provided
The interference statistic information of channel, estimates channel bearing ability；
Based on estimated channel bearing capability distribution transmit power.
9. a kind of adjustment system of downlink transfer, it is characterised in that including：
Signal receiving module, for the time slot rule according to pre- coordination, utilizes the setting configured in down channel
Ascending time slot receives the detection reference signal for carrying out self terminal；
Adjusting module, is transmitted for the down channel environment reflected based on the detection reference signal received
Resource adjusts the transfer resource of the down channel, and according to the transfer resource adjusted, with each terminal
Carry out data transmission.
10. the adjustment system of downlink transfer according to claim 9, it is characterised in that positioned at same
The terminal quantity of cell is multiple, then also includes：Distribute module, is referred to for being detected for each terminal distribution
The Format Series Lines of signal, and corresponding terminal is sent to, to indicate corresponding terminal according to the sequence lattice received
Formula sends detection reference signal；
Corresponding, the signal receiving module is additionally operable to, in the time slot rule according to pre- coordination, utilize descending letter
The setting ascending time slot configured in road receives to come after the detection reference signal of self terminal, each detection ginseng of parsing
The Format Series Lines of signal is examined, to determine the detection reference signal corresponding to each terminal.
11. the adjustment system of downlink transfer according to claim 9, it is characterised in that the time slot
Rule includes：The time cycle of detection reference signal is regularly uploaded in down channel, and/or in descending letter
The initial time of detection reference signal is uploaded in road.
12. the adjustment system of downlink transfer according to claim 9, it is characterised in that the transmission
Resource includes：Transmit at least one of the number of plies, precoding vectors and transmit power.
13. the adjustment system of the downlink transfer according to claim 9 or 12, it is characterised in that institute
Stating adjusting module includes：
First adjustment submodule, for based on the detection reference signal received, determining each layer in down channel
Channel gain；
Second adjustment submodule, for the cumulative comparative result than with pre-determined threshold according to adjacent channel gain,
Determine the transmission number of plies of the down channel.
14. the adjustment system of downlink transfer according to claim 13, it is characterised in that also include：
3rd adjustment submodule, for by the preceding several columns of the right unitary matrice corresponding to default transmission matrix, as
The precoding vectors of corresponding down channel, wherein, the columns of the right unitary matrice and the identified transmission number of plies
It is related.
15. the adjustment system of downlink transfer according to claim 13, it is characterised in that the tune
Mould preparation block also includes：
4th adjustment submodule, for collecting CQI and ACK that the terminal is sent；
Corresponding, the second adjustment submodule is additionally operable to each CQI, each ACK and institute reported based on history
The transmission number of plies of determination, finely tunes the transmission number of plies of corresponding down channel.
16. the adjustment system of downlink transfer according to claim 12, it is characterised in that the tune
Mould preparation block includes：
5th adjustment submodule, for reflected based on the detection reference signal received down channel environment,
The interference statistic information of the down channel provided with terminal, estimates channel bearing ability；
6th adjustment submodule, for based on estimated channel bearing capability distribution transmit power.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020000261A1 (en) * | 2018-06-27 | 2020-01-02 | 华为技术有限公司 | Power allocation method and related device |
| WO2022206374A1 (en) * | 2021-03-31 | 2022-10-06 | 大唐移动通信设备有限公司 | Data transmission method, apparatus, and device, and storage medium |
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| CN102457324A (en) * | 2010-10-29 | 2012-05-16 | 中兴通讯股份有限公司 | Downlink multi-user multi-path beamforming method and device in FDD (Frequency Division Duplexing) system |
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| CN102457324A (en) * | 2010-10-29 | 2012-05-16 | 中兴通讯股份有限公司 | Downlink multi-user multi-path beamforming method and device in FDD (Frequency Division Duplexing) system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020000261A1 (en) * | 2018-06-27 | 2020-01-02 | 华为技术有限公司 | Power allocation method and related device |
| US11503549B2 (en) | 2018-06-27 | 2022-11-15 | Huawei Technologies Co., Ltd. | Power allocation method and related device |
| WO2022206374A1 (en) * | 2021-03-31 | 2022-10-06 | 大唐移动通信设备有限公司 | Data transmission method, apparatus, and device, and storage medium |
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