CN108322245A - Channel status reference signal sending method, device and method of reseptance, mobile terminal - Google Patents
Channel status reference signal sending method, device and method of reseptance, mobile terminal Download PDFInfo
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- CN108322245A CN108322245A CN201710030892.3A CN201710030892A CN108322245A CN 108322245 A CN108322245 A CN 108322245A CN 201710030892 A CN201710030892 A CN 201710030892A CN 108322245 A CN108322245 A CN 108322245A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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Abstract
A kind of channel status reference signal sending method of present invention offer, device and method of reseptance, mobile terminal, this method include：All antenna ports are divided to the port set of preset quantity, each port set includes mutiple antennas port；According to position of the current reference signal sending cycle in preset cycle period and preset cyclic shift rule, determines the reference signal of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle and sent；Cyclic shift rule includes：Corresponding to the reference signal for sending the reference signal of each port set on the different PRB of same frequency domain successively with sending each port set successively on the corresponding each PRB of same reference signal sending cycle in cycle period.For a certain antenna port, downlink channel state information reference signal cycles through successively on each PRB, and the channel status reference signal so as to complete all antenna ports on each PRB is sent, therefore improves the precision of channel estimation.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of channel status reference signal sending method, device and connect
Receiving method, mobile terminal.
Background technology
Full dimension Multiple Input Multiple Output (Full Dimension Multi-Input-Multi-Output, FD-MIMO) is adopted
With the active large-scale antenna array of two dimension, the spatial degrees of freedom that horizontal peacekeeping is tieed up vertically can be made full use of to realize that 3D wave beams are assigned
Shape, while service is provided for great amount of terminals with frequency, to which power system capacity be substantially improved, it is widely regarded as one of 5G key technologies.
Currently, newest 3GPP TS 36.211R13 can at most support the downlink channel status information reference of 16 transmitting antennas
Signal (Channel State InformationReference Signal, CSI-RS) designs.However, in future 5G systems
FD-MIMO technologies be likely to use more antenna numbers (for example 32,64,128, even 256), more antennas mean more
More resource units (Resource Element, RE) will be allocated for CSI-RS, be used for transmission to be greatly reduced
Imitate the resource of transmission data.
The mode of the sending method generally use frequency division multiplexing of traditional downlink channel state information reference signal.Due to frequency
Divide in the transmission process of multiplexing, for a certain antenna port, downlink channel state information reference signal is always in certain fixations
PRB (Physical Resource Block, Physical Resource Block) on transmit, on other PRB then lean on difference obtain, cause
In the penalty of frequency domain upper signal channel estimation so that precision of channel estimation is poor.
Invention content
A kind of channel status reference signal sending method of offer of the embodiment of the present invention, device and method of reseptance, mobile terminal,
To solve the problems, such as that precision of channel estimation is poor.
In a first aspect, an embodiment of the present invention provides a kind of channel status reference signal sending methods, including：
All antenna ports are divided to the port set of preset quantity, each port set includes mutiple antennas port；
According to position of the current reference signal sending cycle in preset cycle period and preset cyclic shift rule
Then, the reference signal of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle is determined
And it is sent；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, and the cycle is moved
Position rule include：Corresponding to the reference for sending each port set on the different PRB of same frequency domain successively in the cycle period
Signal, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
Second aspect, the embodiment of the present invention also provide a kind of downlink channel state information reference signal acceptance method, including：
Receive the cyclic shift rule that base station is sent；
The reference signal sent in the PRB of base station current transmission is determined according to the shift rule；
According to time-frequency two-dimensional interpolation algorithm to the downlink channel shape of all antenna ports in the PRB of the current transmission
State information CSI is estimated；
Wherein, corresponding to the reference letter for sending each port set on the different PRB of same frequency domain successively in cycle period
Number, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
The third aspect, the embodiment of the present invention also provide a kind of channel status reference signal sending device, including：
Grouping module, the port set for all antenna ports to be divided to preset quantity, each port set include multiple
Antenna port；
Send determining module, for according to position of the current reference signal sending cycle in preset cycle period and
Preset cyclic shift rule, determines the day sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
The reference signal of line end mouth is simultaneously sent；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, and the cycle is moved
Position rule include：Corresponding to the reference for sending each port set on the different PRB of same frequency domain successively in the cycle period
Signal, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, including：
Receiving module, the cyclic shift rule for receiving base station transmission；
Reference signal determining module, for being determined according to the shift rule sent in the PRB of base station current transmission
Reference signal；
Estimation module is used for according to time-frequency two-dimensional interpolation algorithm to all antenna ports in the PRB of the current transmission
Downlink channel status information CSI is estimated；
Wherein, corresponding to the reference letter for sending each port set on the different PRB of same frequency domain successively in cycle period
Number, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
In this way, in the embodiment of the present invention, all antenna ports are divided to the port set of preset quantity, each port set packet
Include mutiple antennas port；According to position of the current reference signal sending cycle in preset cycle period and preset cycle
Shift rule determines the ginseng of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
It examines signal and is sent；Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, institute
Stating cyclic shift rule includes：Correspond in the cycle period on the different PRB of same frequency domain and sends each port successively
The reference signal of group, and, send the ginseng of each port set successively on the corresponding each PRB of same reference signal sending cycle
Examine signal.Due in the transmission process of frequency division multiplexing, for a certain antenna port, downlink channel state information reference signal
It is cycled through successively on each PRB, so as to complete the channel status reference signal hair of all antenna ports on each PRB
It send, therefore improves the precision of channel estimation.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart for the channel status reference signal sending method that first embodiment of the invention provides；
Fig. 2 is that each PRB is corresponding with interface group in channel status reference signal sending method provided in an embodiment of the present invention
Relational graph；
Fig. 3 be in channel status reference signal sending method provided in an embodiment of the present invention 32 antenna ports based on when
The two-dimentional cyclic shift of frequency sends exemplary plot；
Fig. 4 is one of the flow chart for the channel status reference signal sending method that second embodiment of the invention provides；
Fig. 5 is the two of the flow chart for the channel status reference signal sending method that second embodiment of the invention provides；
Fig. 6 is the flow chart for the channel status reference signal sending method that third embodiment of the invention provides；
Fig. 7 is the structure chart for the channel status reference signal sending device that fourth embodiment of the invention provides；
Fig. 8 is the structure chart for the mobile terminal that fifth embodiment of the invention provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
First embodiment
It is the flow chart of channel status reference signal sending method provided in an embodiment of the present invention, such as Fig. 1 referring to Fig. 1, Fig. 1
It is shown, include the following steps：
Step 101, all antenna ports are divided to the port set of preset quantity, each port set includes mutiple antennas end
Mouthful；
Channel status reference signal sending method provided in an embodiment of the present invention is mainly used in antenna amount and is more than or waits
In 16 FD-MIMO systems, for being managed to the transmission of reference signal.Specifically, on the reference signal may include
Downlink channel state information reference signal SRS-RS or downlink channel status information reference signal CSI-RS.
Specifically, the quantity of above-mentioned antenna port can be configured according to actual needs, and in embodiment, the antenna end
The quantity of mouth can be 16,32,64 or 128 etc..The case where antenna port is grouped and total antenna port quantity and each PRB
On it is related for sending the antenna port quantity of reference signal, specific number of packet can be configured according to actual conditions.Example
The FD-MIMO systems for being such as 32 for antenna port quantity, if the antenna port number on each PRB for sending reference signal
Amount is 8, then all antenna ports can be divided into 4 port sets, wherein each port set includes 8 antenna ports.Such as
Shown in Fig. 2, port set includes first port group, second port group, third port group and the 4th port set, wherein first port
The corresponding antenna port of group is 15~22, and the corresponding antenna port of second port group is 23~30, the corresponding day of third port group
Line end mouth is 31~38, and the corresponding antenna port of the 4th port set is 39~46.In following embodiment, as example to each stream
The realization process of journey is described in detail.
Step 102, it the position according to current reference signal sending cycle in preset cycle period and preset follows
Ring shift rule determines the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
Reference signal is simultaneously sent；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, and the cycle is moved
Position rule include：Corresponding to the reference for sending each port set on the different PRB of same frequency domain successively in the cycle period
Signal, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
It in the step, applies in the case of above-mentioned 32 antenna ports, above-mentioned cycle period is that reference signal sends week
4 times of phase.That is, needing to send 4 sending cycles in a cycle period.Current reference signal sending cycle is pre-
If cycle period in position include current reference signal sending cycle be cycle period in which time send.Above-mentioned reference
The time span of signal sending cycle can be configured according to actual needs, such as in the present embodiment, optionally, the transmission
Period can be a subframe or a time slot, and one of subframe is two time slots.In other embodiments, it can also adopt
It is defined with other time spans, does not do further limiting herein.
In the present embodiment, corresponds in the cycle period on the different PRB of same frequency domain and send each port successively
The reference signal of group refers to that the different PRB of same frequency domain send the reference of a port group in current reference signal sending cycle
Signal sends the reference signal of next port set in next reference signal sending cycle.As shown in figure 3, PRB0 is in the first reference
Signal sending cycle sends the reference signal of first port group, PRB0 sends second port group in the second reference signal sending cycle
Reference signal, PRB0 send the reference signal of third port group, PRB0 in the 4th reference in third reference signal sending cycle
Signal sending cycle sends the reference signal of the 4th port set, PRB0 sends first port group in the first reference signal sending cycle
Reference signal.
Sending the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle is
Refer to, according to the number order of each PRB, send the reference signal of each port set successively, for example, sending week in same reference signal
PRB0 sends the reference signal of first port group in phase, PRB1 sends the reference signal of second port group, PRB2 sends third end
The reference signal of mouth group, PRB3 send the reference signal of the 4th port set, PRB4 sends the reference signal of first port group, PRB5
Send the reference signal of second port group, PRB6 sends the reference signal of third port group, PRB7 sends the ginseng of the 4th port set
Examine signal.
In this way, in the embodiment of the present invention, all antenna ports are divided to the port set of preset quantity, each port set packet
Include mutiple antennas port；According to position of the current reference signal sending cycle in preset cycle period and preset cycle
Shift rule determines the ginseng of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
It examines signal and is sent；Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, institute
Stating cyclic shift rule includes：Correspond in the cycle period on the different PRB of same frequency domain and sends each port successively
The reference signal of group, and, send the ginseng of each port set successively on the corresponding each PRB of same reference signal sending cycle
Examine signal.Due in the transmission process of frequency division multiplexing, for a certain antenna port, downlink channel state information reference signal
It is cycled through successively on each PRB, so as to complete the channel status reference signal hair of all antenna ports on each PRB
It send, therefore improves the precision of channel estimation.
Second embodiment
Further, it is based on above-described embodiment, in the present embodiment, above-mentioned cyclic shift rule further includes that cyclic shift refers to
Number, the position according to current reference signal sending cycle in preset cycle period and preset cyclic shift rule
Then, the reference signal of the antenna port sent on the corresponding each fast PRB of physical resource of current reference signal sending cycle is determined
Including：According to the number N of PRBPRBThe number identified with position of the current reference signal sending cycle in preset cycle period
The remainder that the sum of value I divided by preset quantity obtain determines each PRB port sets to be sent.
In the present embodiment, each PRB is correspondingly arranged on its corresponding number, as shown in figure 3, being carried out by taking 4 PRB as an example
Illustrate, for example, the number of PRB0 is 0, the number of PRB1 is 1, the number of PRB2 is 2 and the number of PRB3 is 3, in the present embodiment
The number enumerated is merely to illustrate this programme, not indicates the true number of PRB.Current reference signal sending cycle is preset
Position in cycle period includes that current reference signal sending cycle sends for which time in cycle period, such as sends out for the first time
It send, the numerical value that position of the preceding reference signal sending cycle in preset cycle period is identified is 0；It is preceding such as second of transmission
The numerical value that position of the reference signal sending cycle in preset cycle period is identified is 1；It is preceding with reference to letter if third time is sent
The numerical value that number position of the sending cycle in preset cycle period is identified is 2；If the 4th sends, preceding reference signal sends week
The numerical value that position of the phase in preset cycle period is identified is 3.
In the present embodiment, in cycle period, when first time send reference signal when, then according to the number of each PRB with
The sum of numerical value that position of the current reference signal sending cycle in preset cycle period is identified divided by preset quantity obtain
Remainder include：The corresponding remainder values of PRB0 are 0, the corresponding remainder values of PRB1 are 1, the corresponding remainder values of PRB2 be 2 and
The corresponding remainder values of PRB3 are 3.It may thereby determine that PRB port sets to be sent are：It is 15 that PRB0, which corresponds to the port set sent,
It is that 31~38, PRB3 correspondences are sent that~22, PRB1, which correspond to the port set that the port set sent is 23~30, PRB2 correspondence transmissions,
Port set is 39~46.
When sending reference signal second, then according to the number of each PRB and current reference signal sending cycle default
Cycle period in the sum of the numerical value that is identified of position divided by the obtained remainder of preset quantity include：The corresponding remainders of PRB0
Value is 1, the corresponding remainder values of PRB1 are 2, the corresponding remainder values of PRB2 are 3 and the corresponding remainder values of PRB3 are 4.So as to
Determine that PRB port sets to be sent are：It is 31 that PRB0, which corresponds to the port set that the port set sent is 23~30, PRB1 correspondence transmissions,
It is 15~22 that~38, PRB2, which correspond to the port set that the port set sent is 39~46, PRB3 correspondence transmissions,.And so on, successively
Cyclic shift.
Further, in above-described embodiment, the mode for displacement is to move one each time, however, implementing in others
It, can also be by the way of moving multidigit in example.It specifically, can be to current reference signal sending cycle in preset cycle period
In the numerical value that is identified of position different values is set, such as when carrying out moving two, following setting can be done：When
Preceding reference signal sending cycle is to send the first time in cycle period, and preceding reference signal sending cycle is in preset cycle period
In the numerical value that is identified of position be 0；Current reference signal sending cycle is second of transmission in cycle period, preceding with reference to letter
The numerical value that number position of the sending cycle in preset cycle period is identified is 2；Current reference signal sending cycle is cycle
Third time in period is sent, and the numerical value that position of the preceding reference signal sending cycle in preset cycle period is identified is 4；
Current reference signal sending cycle is the 4th transmission in cycle period, and preceding reference signal sending cycle is in preset cycle period
In the numerical value that is identified of position be 6.
Further, further include before above-mentioned steps 102 with reference to Fig. 4：
Step 103, the cyclic shift rule is sent to the reception terminal for receiving the reference signal, for described
It receives terminal and the reference signal sent in the PRB of current transmission is determined according to the cyclic shift rule, according to time-frequency two-dimensional
Interpolation algorithm estimates the downlink channel state information of all antenna ports in the PRB of the current transmission.
It should be noted that above-mentioned channel status reference signal sending method can be applied in a base station, can also apply
On the relaying (such as signal amplifier) of base station and mobile terminal, when reference signal is uplink channel state information reference
When signal SRS-RS, which applies on relaying, and above-mentioned reception terminal is base station；Work as reference
When signal is downlink channel status information reference signal CSI-RS, which applies in
After or base station on, above-mentioned reception terminal be mobile terminal.
In the present embodiment, when mobile terminal is established RRC with base station and connect, above-mentioned cyclic shift rule can be sent to
It is corresponding to receive terminal.After receiving terminal and receiving the cyclic shift rule, it will determine the ginseng sent in the PRB of transmission
Examine signal.
Further, further include before above-mentioned steps 101 with reference to Fig. 5：
Step 104, it calculates on total antenna port number divided by each PRB for sending the antenna port number of reference signal most
The quotient of big value；
Step 105, the quotient being calculated is set as the preset quantity into the value that a method rounding operation obtains of advancing.
Such as the FD-MIMO systems that antenna port quantity is 32, if for sending reference signal on each PRB
Antenna port quantity is 8, then above-mentioned preset quantity could be provided as 4.In other examples, if total antenna port number
Divided by the quotient of the maximum value of antenna port number on each PRB for sending reference signal carries decimal point, then may be used
The value obtained into a method rounding operation is set as the preset quantity.Such as antenna port number is 32, and be used on each PRB
The antenna port quantity for sending reference signal is 7, then above-mentioned preset quantity could be provided as 5, can antenna port be divided into 8
Group, wherein 4 port sets are 7 antenna ports, 1 port set is 4 antenna ports.
If the group number of the quantity divided by port set that should be noted that PRB is not integer, due to can in each PRB
The reference signal of all antenna ports is cycled through, therefore can effectively improve the estimated accuracy to downlink channel state information.
3rd embodiment
With reference to Fig. 6, the flow chart of downlink channel state information reference signal acceptance method embodiment of the present invention is provided, it should
Downlink channel state information reference signal acceptance method includes：
Step 601, the cyclic shift rule that base station is sent is received；
Step 602, the reference signal sent in the PRB of base station current transmission is determined according to the shift rule；
Step 603, according to time-frequency two-dimensional interpolation algorithm to the downlink chain of all antenna ports in the PRB of the current transmission
Path channels status information CSI is estimated；
Wherein, corresponding to the reference letter for sending each port set on the different PRB of same frequency domain successively in cycle period
Number, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
Downlink channel state information reference signal acceptance method provided in an embodiment of the present invention is mainly used in mobile terminal
In, in mobile terminal access base station network, it will the cyclic shift rule that base station is sent is received, then according to the cyclic shift
Sent in the PRB of rule parsing current transmission receive base station send reference signal CSI-RS, using wireless channel when
The correlation in domain and frequency domain, by time-frequency two-dimensional interpolation algorithm to the downlink of all antenna ports in the PRB of the current transmission
Downlink channel state information CSI is estimated, then by the CSI feedback of estimation to base station.
In the embodiment of the present invention, the cyclic shift rule that base station is sent is received；Determine that base station is worked as according to the shift rule
Reference signal sent in the PRB of preceding transmission；According to time-frequency two-dimensional interpolation algorithm to all days in the PRB of the current transmission
The downlink channel status information CSI of line end mouth is estimated；Wherein, the difference of same frequency domain is corresponded in cycle period
The reference signal of each port set is sent on PRB successively, and, on the corresponding each PRB of same reference signal sending cycle
The reference signal of each port set is sent successively.Due in the transmission process of frequency division multiplexing, for a certain antenna port, chain
Path channels state information reference signals cycle through successively on each PRB, so as to complete all antenna ports on each PRB
Channel status reference signal send, therefore improve the precision of channel estimation.
Fourth embodiment
It is the structure chart that the present invention implements the channel status reference signal sending device provided, Neng Goushi referring to Fig. 7, Fig. 7
Existing first to channel status reference signal sending method in second embodiment details, and reach identical effect.Such as Fig. 7 institutes
Show, channel status reference signal sending device 700 includes：
Grouping module 701, the port set for all antenna ports to be divided to preset quantity, each port set include more
A antenna port；
Determining module 702 is sent, for the position according to current reference signal sending cycle in preset cycle period
And preset cyclic shift rule, it determines and is sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
Antenna port reference signal and sent；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, and the cycle is moved
Position rule include：Corresponding to the reference for sending each port set on the different PRB of same frequency domain successively in the cycle period
Signal, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
Optionally, the transmission determining module 702 is specifically used for：Week is sent according to the number of PRB and current reference signal
The remainder that the sum of numerical value that position of the phase in preset cycle period is identified divided by preset quantity obtain determines that each PRB is waited for
The port set of transmission.
Optionally, described device further includes：
Sending module, for the cyclic shift rule to be sent to the reception terminal for receiving the reference signal,
The reference signal sent in the PRB of current transmission is determined according to the cyclic shift rule for the reception terminal, according to when
Frequency two-dimensional interpolation algorithm estimates the downlink channel state information of all antenna ports in the PRB of the current transmission.
Optionally, described device further includes：
Computing module, for calculating the antenna end on total antenna port number divided by each PRB for sending reference signal
The quotient of the mouth maximum value of number；
Setting module, for the quotient being calculated to be set as the present count into the value that a method rounding operation obtains of advancing
Amount.
Optionally, the reference signal includes uplink channel state information reference signal SRS-RS or downlink letter
Channel state information reference signal CSI-RS.
In this way, in the embodiment of the present invention, all antenna ports are divided to the port set of preset quantity, each port set packet
Include mutiple antennas port；According to position of the current reference signal sending cycle in preset cycle period and preset cycle
Shift rule determines the ginseng of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
It examines signal and is sent；Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, institute
Stating cyclic shift rule includes：Correspond in the cycle period on the different PRB of same frequency domain and sends each port successively
The reference signal of group, and, send the ginseng of each port set successively on the corresponding each PRB of same reference signal sending cycle
Examine signal.Due in the transmission process of frequency division multiplexing, for a certain antenna port, downlink channel state information reference signal
It is cycled through successively on each PRB, so as to complete the channel status reference signal hair of all antenna ports on each PRB
It send, therefore improves the precision of channel estimation.
5th embodiment
It is the structure chart that the present invention implements the mobile terminal provided referring to Fig. 8, Fig. 8, can realizes in 3rd embodiment and believe
The details of road state reference signaling method, and reach identical effect.As shown in figure 8, mobile terminal 800 includes：
Receiving module 801, the cyclic shift rule for receiving base station transmission；
Reference signal determining module 802, for being determined according to the shift rule sent in the PRB of base station current transmission
Reference signal；
Estimation module 803 is used for according to time-frequency two-dimensional interpolation algorithm to all antenna ports in the PRB of the current transmission
Downlink channel status information CSI estimated；
Wherein, corresponding to the reference letter for sending each port set on the different PRB of same frequency domain successively in cycle period
Number, and, send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
In the embodiment of the present invention, the cyclic shift rule that base station is sent is received；Determine that base station is worked as according to the shift rule
Reference signal sent in the PRB of preceding transmission；According to time-frequency two-dimensional interpolation algorithm to all days in the PRB of the current transmission
The downlink channel status information CSI of line end mouth is estimated；Wherein, the difference of same frequency domain is corresponded in cycle period
The reference signal of each port set is sent on PRB successively, and, on the corresponding each PRB of same reference signal sending cycle
The reference signal of each port set is sent successively.Due in the transmission process of frequency division multiplexing, for a certain antenna port, chain
Path channels state information reference signals cycle through successively on each PRB, so as to complete all antenna ports on each PRB
Channel status reference signal send, therefore improve the precision of channel estimation.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit
It connects, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the embodiment of the present invention
Purpose.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can to store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (12)
1. a kind of channel status reference signal sending method, which is characterized in that including：
All antenna ports are divided to the port set of preset quantity, each port set includes mutiple antennas port；
According to position of the current reference signal sending cycle in preset cycle period and preset cyclic shift rule, really
Determine the reference signal of the antenna port sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle and progress
It sends；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, the cyclic shift rule
Include then：Correspond to the reference signal for sending each port set on the different PRB of same frequency domain successively in the cycle period,
And send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
2. according to the method described in claim 1, it is characterized in that, it is described according to current reference signal sending cycle preset
Position in cycle period and preset cyclic shift rule, determine the corresponding each physics of current reference signal sending cycle
The step of reference signal of the antenna port sent on the fast PRB of resource includes：It is sent according to the number of PRB and current reference signal
The remainder that the sum of numerical value that position of the period in preset cycle period is identified divided by preset quantity obtain determines each PRB
Port set to be sent.
3. according to the method described in claim 1, it is characterized in that, it is described according to current reference signal sending cycle preset
Position in cycle period and preset cyclic shift rule, determine the corresponding each physics of current reference signal sending cycle
The reference signal of the antenna port sent on resource block PRB and the step of sent before, further include：
The cyclic shift rule is sent to the reception terminal for receiving the reference signal, for the reception terminal according to
The cyclic shift rule determines the reference signal sent in the PRB of current transmission, according to time-frequency two-dimensional interpolation algorithm to institute
The downlink channel state information for stating all antenna ports in the PRB of current transmission is estimated.
4. method according to any one of claims 1 to 3, which is characterized in that it is described all antenna ports are divided to it is pre-
If before the step of port set of quantity, further include：
Calculate the quotient of the maximum value of antenna port number on total antenna port number divided by each PRB for sending reference signal；
The quotient being calculated is set as the preset quantity into the value that a method rounding operation obtains of advancing.
5. according to the method described in claim 1, it is characterized in that, the reference signal includes uplink channel state information
Reference signal SRS-RS or downlink channel status information reference signal CSI-RS.
6. a kind of downlink channel state information reference signal acceptance method, which is characterized in that including：
Receive the cyclic shift rule that base station is sent；
The reference signal sent in the PRB of base station current transmission is determined according to the shift rule；
The downlink channel status of all antenna ports in the PRB of the current transmission is believed according to time-frequency two-dimensional interpolation algorithm
Breath CSI is estimated；
Wherein, the reference signal for sending each port set on the different PRB of same frequency domain successively is corresponded in cycle period, with
And send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
7. a kind of channel status reference signal sending device, which is characterized in that including：
Grouping module, the port set for all antenna ports to be divided to preset quantity, each port set include mutiple antennas
Port；
Determining module is sent, for according to position of the current reference signal sending cycle in preset cycle period and default
Cyclic shift rule, determine the antenna end sent on the corresponding each Physical Resource Block PRB of current reference signal sending cycle
The reference signal of mouth is simultaneously sent；
Wherein, the cycle period includes the reference signal sending cycle of the preset quantity integral multiple, the cyclic shift rule
Include then：Correspond to the reference signal for sending each port set on the different PRB of same frequency domain successively in the cycle period,
And send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
8. device according to claim 7, which is characterized in that the transmission determining module is specifically used for：According to the volume of PRB
The sum of number numerical value identified with position of the current reference signal sending cycle in preset cycle period divided by preset quantity
Obtained remainder determines each PRB port sets to be sent.
9. device according to claim 7, which is characterized in that described device further includes：
Sending module, for the cyclic shift rule to be sent to the reception terminal for receiving the reference signal, for institute
It states and receives terminal reference signal sent in the PRB of current transmission is determined according to the cyclic shift rule, according to time-frequency two
Dimension interpolation algorithm estimates the downlink channel state information of all antenna ports in the PRB of the current transmission.
10. device according to any one of claims 7 to 9, which is characterized in that described device further includes：
Computing module, for calculating the antenna port number on total antenna port number divided by each PRB for sending reference signal
The quotient of maximum value；
Setting module, for the quotient being calculated to be set as the preset quantity into the value that a method rounding operation obtains of advancing.
11. device according to claim 7, which is characterized in that the reference signal includes uplink channel state letter
Cease reference signal SRS-RS or downlink channel status information reference signal CSI-RS.
12. a kind of mobile terminal, which is characterized in that including：
Receiving module, the cyclic shift rule for receiving base station transmission；
Reference signal determining module, for determining the reference sent in the PRB of base station current transmission according to the shift rule
Signal；
Estimation module is used for according to time-frequency two-dimensional interpolation algorithm to the downlink of all antenna ports in the PRB of the current transmission
Downlink channel state information CSI is estimated；
Wherein, the reference signal for sending each port set on the different PRB of same frequency domain successively is corresponded in cycle period, with
And send the reference signal of each port set successively on the corresponding each PRB of same reference signal sending cycle.
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| WO2020029182A1 (en) * | 2018-08-09 | 2020-02-13 | 株式会社Ntt都科摩 | Method and device for transmitting reference signal |
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