CN106549740A - A kind of method for obtaining channel sequence in a communications system, apparatus and system - Google Patents
A kind of method for obtaining channel sequence in a communications system, apparatus and system Download PDFInfo
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- CN106549740A CN106549740A CN201510609076.9A CN201510609076A CN106549740A CN 106549740 A CN106549740 A CN 106549740A CN 201510609076 A CN201510609076 A CN 201510609076A CN 106549740 A CN106549740 A CN 106549740A
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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
Abstract
The invention discloses a kind of method for obtaining channel sequence in a communications system, apparatus and system, in the method, base station sends corresponding RE positions setting zero energy CSI-RS of corresponding OFDM symbol that frame structure is configured to part PRB to terminal, the corresponding RE positions of corresponding OFDM symbol of another part PRB corresponding to the part PRB arrange the RI-RS of non-zero power CSI-RS, channel sequence is measured according to the RI-RS for receiving by the terminal, and the channel sequence that measurement is obtained is fed back to into the base station, to know corresponding channel capacity, so as to the power of RI-RS is improve while the RI-RS expenses of minimum 2RE/PRB are realized, and then improve estimated accuracies of the RI-RS to channel sequence.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of channel sequence of acquisition in a communications system
Method, apparatus and system.
Background technology
It is used for changing in existing communication system, such as LTE (Long Term Evolution, Long Term Evolution) system
Kind system transfers quality, the mode of raising power system capacity generally adopt traditional 2D MIMO
(Multiple-Input Multiple-Output, multiple-input and multiple-output) technology, its ultimate principle is to utilize water
Two-dimensional space degree of freedom in plane come improve transmission quality, improve power system capacity.In current physical layer technology
Without compared with quantum jump background, how future broadband wireless communication systems further improve transmission quality, spectrum efficiency,
More feasible direction is fully to excavate vertical space degree of freedom, and traditional 2D MIMO technologies are expanded to 3D
MIMO technology, makes full use of three-dimensional degree of freedom to improve systematic function.3D-MIMO antennas point
Butut can be as shown in figure 1, by the day of the N root horizontal directions in original 2D mimo antennas distribution in figure
Line expands to N × M dimension antennas of matrix form, and wherein horizontal direction has N root antennas, and vertical direction has M
Root antenna, every horizontal antenna originally are made up of the antenna element of M vertical direction.
During deployment 3D-MIMO antennas, original 2～8 passage is extended to more than 8 passages,
For example, typically there are 16,32,64 or 128 passages etc., as port number is excessive, base station is by being based on
When the mode of code book feedback obtains CSI (Channel State Indication, channel condition information), if
Directly transmit CSI-RS (the Channel State Indication-reference signal letters of 32 or 64 ports
Channel state information reference signal), then CSI-RS expenses can be caused excessive, and code book feedback quantity is also greatly increased.
Specifically, it is contemplated that the requirement of CSI-RS precision of channel estimation, the expense of CSI-RS is 1RE/PRB/ ends
Mouthful, the CSI-RS expenses of 32 ports are 32RE/PRB, and expense is larger.By taking 2 port CSI-RS as an example,
Existing TDD (Time Division Duplexing, time division duplex) system and FDD (Frequency Division
Dual, FDD) in system, the resource location that CSI-RS is taken respectively can be as shown in Figure 2.Need
Bright, existing CSI-RS is divided to for two kinds：Zero energy ZP CSI-RS and non-zero power NZP CSI-RS.
NZP CSI-RS refer to the corresponding RE in PRB (Physical Resource Block, Physical Resource Block)
(Resource Element, Resource Unit) position sends CSI-RS sequences, estimates channel for UE,
ZP CSI-RS refer to RE positions punching corresponding in PRB, do not send any signal, for reducing adjacent cell
Interference when NZP CSI-RS upper signal channels are estimated.
And during according to obtaining CSI based on the mode of channel reciprocity, it is contemplated that terminal transmission antenna number NTX
Less than reception antenna number NRXSituation, terminal generally only configures 1 transmission antenna, and is based on channel reciprocity
Property mode be only capable of support NTXStreaming, or even single-stream transmission, lead to not provide multiple stream transmission well.
Therefore, in order to preferably support multiple stream transmission and ensure relatively low CSI-RS expenses, base can be passed through
End transmission of standing is only used for measuring reference signal RI-RS of channel sequence, and such terminal is based on this feedback channel order,
Multiple stream transmission can preferably be supported.That is, directly can be configured using the frame structure of existing CSI-RS
Mode is obtaining the order of channel.But as terminal estimates RI-RS only for obtaining channel sequence, and utilize
Not only include RI (rank indication, order index) in the CSI that CSI-RS measurements are obtained, also including CQI
(Channel Quality Indicator, channel quality are indicated) and/or PMI (Precoding Matrix
Indicator, pre-coding matrix instruction) etc., therefore, using the frame structure configuration mode of existing CSI-RS come
The order expense for obtaining channel is larger.
In addition, CSI-RS is sent for cell level, it is contemplated that giving full play to 3D-MIMO strengthens the excellent of covering
Gesture, then need to improve the power for sending CSI-RS sequences, as shown in figure 3, being NZP in prior art
CSI-RS strengthens power configuration schematic diagram, and 0,1 corresponding RE positions are marked in figure to be used to send NZP
CSI-RS sequences, below 0,1 corresponding RE positions, the RE positions user of corresponding two shades sends ZP
CSI-RS, the power on two shades is added on 0,1 corresponding RE positions, NZP is lifted
The power of CSI-RS.But so it is accomplished by configuring two sets of CSI-RS information patterns to inform terminal for terminal
The RE positions of NZP CSI-RS sequences and the RE positions of ZP CSI-RS, its minimal-overhead is sent to be
4RE/PRB, if it is desired to further hoisting power, then need bigger CSI-RS expenses.
As shown in the above, when system only needs to obtain channel sequence, tie according to the frame of existing CSI-RS
Structure configuration mode can then have that CSI-RS expenses increase with power ascension obtaining the order of channel.
The content of the invention
A kind of method for obtaining channel sequence in a communications system, apparatus and system are embodiments provided,
To solve, when system only needs to obtain channel sequence, to come according to the frame structure configuration mode of existing CSI-RS
The order of channel is obtained, then can there is a problem of that CSI-RS expenses increase with power ascension.
A kind of method for obtaining channel sequence in a communications system is embodiments provided, including：
Base station is sent for measuring reference signal RI-RS of channel sequence to terminal, with by the terminal according to connecing
The RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to into the base station, wherein,
The frame structure of the RI-RS is configured to corresponding OFDM (the Orthogonal Frequency of part PRB
Division Multiplexing, orthogonal frequency division multiplexi) the corresponding RE positions setting zero energy of symbol
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges non-zero power CSI-RS；
The channel sequence of the terminal feedback is received, to know corresponding channel capacity.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, the embodiment of the present invention additionally provides another kind of side for obtaining channel sequence in a communications system
Method, including：
Terminal receives reference signal RI-RS for measuring channel sequence that base station sends, wherein, the RI-RS
Frame structure be configured to the corresponding RE positions of corresponding OFDM symbol of part PRB zero energy be set
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges non-zero power CSI-RS；
Channel sequence is measured according to the RI-RS, and the channel sequence that measurement is obtained is fed back to into the base station, with
Corresponding channel capacity is known by the base station.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, the embodiment of the present invention additionally provides a kind of base station, including：
Transmitting element, for sending for measuring reference signal RI-RS of channel sequence, with by described to terminal
Terminal is according to the RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to described
Base station, wherein, the corresponding OFDM symbol that the frame structure of the RI-RS is configured to part PRB is corresponding
RE positions arrange zero energy CSI-RS, and another part PRB's corresponding to the part PRB is corresponding
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS；
Receiving unit, for receiving the channel sequence of the terminal feedback, to know corresponding channel capacity.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, the embodiment of the present invention additionally provides a kind of terminal, including：
Receiving unit, for receiving reference signal RI-RS for measuring channel sequence of base station transmission, wherein,
The frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB and arranges
Zero energy CSI-RS, the corresponding OFDM symbol pair of another part PRB corresponding to the part PRB
The RE positions answered arrange non-zero power CSI-RS；
Processing unit, for measuring channel sequence, and the channel sequence feedback that measurement is obtained according to the RI-RS
To the base station, to know corresponding channel capacity by the base station.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, the embodiment of the present invention additionally provides a kind of system for obtaining channel sequence in a communications system,
Including：
Base station, for sending for measuring reference signal RI-RS of channel sequence to terminal, wherein, it is described
The frame structure of RI-RS is configured to the corresponding Resource Unit RE positions of corresponding OFDM symbol of part PRB
Zero energy CSI-RS, the corresponding OFDM symbols of another part PRB corresponding to the part PRB are set
Number corresponding RE positions arrange non-zero power CSI-RS, and, the channel sequence of the terminal feedback is received,
To know corresponding channel capacity.
Terminal, for receiving the RI-RS that the base station sends, and measures channel according to the RI-RS
Order, and, the channel sequence that measurement is obtained is fed back to into the base station.
The present invention has the beneficial effect that：
A kind of method for obtaining channel sequence in a communications system, apparatus and system are embodiments provided,
In the method, base station is sent for measuring reference signal RI-RS of channel sequence, with by the end to terminal
End is according to the RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to the base
Stand, wherein, the frame structure of the RI-RS is configured to the corresponding RE of corresponding OFDM symbol of part PRB
Position arranges zero energy CSI-RS, the corresponding OFDM of another part PRB corresponding to the part PRB
The corresponding RE positions of symbol arrange non-zero power CSI-RS, and the channel sequence of the reception terminal feedback,
To know corresponding channel capacity.That is, in technical scheme described in the embodiment of the present invention, base station leads to
Cross to terminal and send the corresponding RE positions setting of corresponding OFDM symbol that frame structure is configured to part PRB
The corresponding OFDM symbol pair of zero energy CSI-RS another part PRB corresponding to the part PRB
The RE positions answered arrange the RI-RS of non-zero power CSI-RS, so as to realize minimum 2RE/PRB's
The power of RI-RS is improve while RI-RS expenses, and then improves estimation essences of the RI-RS to channel sequence
Degree.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in embodiment description
The accompanying drawing that needs are used is briefly introduced, it should be apparent that, drawings in the following description are only the present invention's
Some embodiments, for one of ordinary skill in the art, on the premise of not paying creative work,
Can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 show 3D mimo antenna schematic diagrams in prior art；
Fig. 2 show the frame structure configuration schematic diagram of CSI-RS in prior art；
During Fig. 3 show prior art, NZP CSI-RS strengthen power configuration schematic diagram；
Fig. 4 show a kind of method for obtaining channel sequence in a communications system described in the embodiment of the present invention one
Schematic flow sheet；
Fig. 5 A show a kind of frame structure configuration schematic diagram of the RI-RS described in the embodiment of the present invention one；
Fig. 5 B show a kind of frame structure configuration schematic diagram of the RI-RS described in the embodiment of the present invention one；
Fig. 5 C show a kind of another kind of frame structure configuration of the RI-RS described in the embodiment of the present invention one and illustrate
Figure；
Fig. 5 D show a kind of another kind of frame structure configuration of the RI-RS described in the embodiment of the present invention one and illustrate
Figure；
Fig. 6 show a kind of another kind of frame structure configuration of the RI-RS described in the embodiment of the present invention one and illustrates
Figure；
Fig. 7 show the method that the another kind described in the embodiment of the present invention two obtains channel sequence in a communications system
Schematic flow sheet；
Fig. 8 show a kind of method for obtaining channel sequence in a communications system described in the embodiment of the present invention three
Interaction flow schematic diagram；
Fig. 9 show a kind of structural representation of the base station described in the embodiment of the present invention four；
Figure 10 show a kind of structural representation of the terminal described in the embodiment of the present invention four；
Figure 11 show a kind of system for obtaining channel sequence in a communications system described in the embodiment of the present invention four
Structural representation.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to this
It is bright to be described in further detail, it is clear that described embodiment is only a part of embodiment of the invention,
Rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The all other embodiment obtained under the premise of going out creative work, belongs to the scope of protection of the invention.
Embodiment one：
The embodiment of the present invention one provides a kind of method for obtaining channel sequence in a communications system, as shown in figure 4,
It is described in the embodiment of the present invention one in a communications system obtain channel sequence method schematic flow sheet, institute
The method of stating may include following steps：
Step 401：Base station is sent for measuring reference signal RI-RS of channel sequence, with by described to terminal
Terminal is according to the RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to described
Base station, wherein, the corresponding OFDM symbol that the frame structure of the RI-RS is configured to part PRB is corresponding
RE positions arrange zero energy CSI-RS, and another part PRB's corresponding to the part PRB is corresponding
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS.
Step 402：The channel sequence of the terminal feedback is received, to know corresponding channel capacity.
That is, in technical scheme described in the embodiment of the present invention, base station is by sending frame structure to terminal
The corresponding RE positions of corresponding OFDM symbol for being configured to part PRB arrange zero energy CSI-RS, with institute
The corresponding RE positions of corresponding OFDM symbol for stating the corresponding another part PRB of part PRB arrange non-zero
The RI-RS of power CSI-RS, so as to improve while the RI-RS expenses of minimum 2RE/PRB are realized
The power of RI-RS, and then improve estimated accuracies of the RI-RS to channel sequence.
Alternatively, the frame structure configuration of the RI-RS can be K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
For example, it is assumed that 100 PRB are included in the whole bandwidth of RI-RS, then can be continuous middle by 7
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, and then realize that part PRB's is corresponding
The corresponding RE positions of OFDM symbol arrange zero energy CSI-RS, the corresponding OFDM of another part PRB
The corresponding RE positions of symbol arrange the frame structure collocation form of the RI-RS of non-zero power CSI-RS, so as to
The power of RI-RS is improve while the RI-RS expenses of minimum 2RE/PRB are realized, and then is improved
Estimated accuracies of the RI-RS to channel sequence.
Alternatively, the frame structure configuration of the RI-RS can also be by the phase of n-th PRB in each subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
For example, by taking TDD system as an example, the frame structure configuration figure of RI-RS two-port can be such as left side in Fig. 5 A
Shown in figure, wherein N=1, M=1, in figure, 0,1 represents two ports of RI-RS respectively, by Fig. 5 A
Middle left hand view understands, is located in corresponding OFDM symbol #8 of the first subcarrier and #10 of first PRB
RE positions arrange non-zero power CSI-RS to send CSI-RS sequences, the first of second PRB
The RE positions that corresponding OFDM symbol #8 of subcarrier and #10 are located arrange zero energy CSI-RS and (beat
Hole) so that the power on the RE positions of adjacent transmission CSI-RS sequences strengthens, and then realize most
The power of RI-RS is improve while the RI-RS expenses of little 2RE/PRB, and Jing experiments understand that maximum can
Hoisting power is 3dB, further, the frame structure configuration figure of the RI-RS two-port by taking FDD system as an example can
As shown in right part of flg in Fig. 5 A, the embodiment of the present invention is not repeated to this.Correspondingly, in M=1, with
As a example by TDD system, the frame structure configuration figure of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 B institutes
Show.
Again for example, work as N=1, during M=2, the frame structure configuration of the RI-RS two-port comprising multiple PRB
Figure can as shown in Figure 5 C, and Jing experiments understand that the configuration mode is realizing the RI-RS of minimum 2RE/PRB
While expense, the 4.7dB by the power ascension of RI-RS；Further, as M=3, comprising multiple PRB
RI-RS two-port frame structure configuration figure can as shown in Figure 5 D, the configuration mode is realizing minimum
While the RI-RS expenses of 2RE/PRB, the 6dB by the power ascension of RI-RS.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes
To configure the RE positions for sending CSI-RS sequences, can specifically be embodied as：By the n-th of i-th subframe
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, i+1 subframe
The corresponding RE positions of corresponding OFDM symbol of N+1 PRB non-zero power CSI-RS is set, and
Every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB, non-zero power is set
The corresponding RE positions symbols of corresponding OFDM of CSI-RS, other PRB arrange zero energy CSI-RS, its
The corresponding RE of corresponding OFDM symbol of minor frame next PRB successively after one PRB of rearward displacement
Position arranges non-zero power CSI-RS, and the corresponding OFDM symbol of the next PRB every M PRB
Corresponding RE positions arrange non-zero power CSI-RS, the corresponding RE positions of corresponding OFDM of other PRB
Set symbol arranges zero energy CSI-RS, wherein, i, N, M are positive integer.
For example, i=1, N=1 are worked as, during M=2, it is assumed that the frame structure of the RI-RS comprising 3 subframes
It is configured to：Arrange in the corresponding RE positions of the corresponding OFDM symbol of first PRB of first subframe
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every 2 PRB
Position arranges zero energy CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB arrange non-
Zero energy CSI-RS, in the corresponding RE positions of the corresponding OFDM symbol of second PRB of second subframe
Install zero setting power CSI-RS, and the corresponding OFDM symbol correspondence of the next PRB every 2 PRB
RE positions arrange zero energy CSI-RS, the corresponding RE positions symbols of corresponding OFDM of other PRB
Non-zero power CSI-RS is set, it is corresponding in the corresponding OFDM symbol of the 3rd PRB of the 3rd subframe
RE positions arrange zero energy CSI-RS, and the corresponding OFDM symbol of the next PRB every 2 PRB
Corresponding RE positions arrange zero energy CSI-RS, and the corresponding OFDM of the next PRB every 2 PRB
The corresponding RE positions of symbol arrange zero energy CSI-RS, the corresponding RE of corresponding OFDM of other PRB
Position symbol arranges non-zero power CSI-RS, specifically can be as shown in fig. 6, being RI-RS two in TDD system
The frame structure configuration figure of port, wherein, 0,1 represents two ports of RI-RS respectively.
The embodiment of the present invention one provides a kind of method for obtaining channel sequence in a communications system, in the method
In, base station is sent for measuring reference signal RI-RS of channel sequence to terminal, with by the terminal according to connecing
The RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to into the base station, wherein,
The frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB and arranges
Zero energy CSI-RS, the corresponding OFDM symbol pair of another part PRB corresponding to the part PRB
The RE positions answered arrange non-zero power CSI-RS, and the channel sequence of the reception terminal feedback, to know
Corresponding channel capacity.That is, in technical scheme described in the embodiment of the present invention, base station is by end
End sends the corresponding RE positions setting zero energy of corresponding OFDM symbol that frame structure is configured to part PRB
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges the RI-RS of non-zero power CSI-RS, so as to open in the RI-RS for realizing minimum 2RE/PRB
The power of RI-RS is improve while pin, and then improves estimated accuracies of the RI-RS to channel sequence.
Embodiment two
The embodiment of the present invention two so that action executing side is as terminal as an example, to described in the embodiment of the present invention one logical
The method that channel sequence is obtained in letter system is further described, as shown in fig. 7, which is the embodiment of the present invention
The schematic flow sheet of the method for obtaining channel sequence in a communications system described in two, methods described may include following
Step：
Step 701：Terminal receives reference signal RI-RS for measuring channel sequence that base station sends, wherein,
The frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB and arranges
Zero energy CSI-RS, the corresponding OFDM symbol pair of another part PRB corresponding to the part PRB
The RE positions answered arrange non-zero power CSI-RS.
Step 702：Channel sequence is measured according to the RI-RS, and the channel sequence that measurement is obtained is fed back to into institute
Base station is stated, corresponding channel capacity is known by the base station.
That is, in technical scheme described in the embodiment of the present invention, terminal is configured to by receiving frame structure
The corresponding RE positions of corresponding OFDM symbol of part PRB arrange zero energy CSI-RS, with the part
The corresponding RE positions of corresponding OFDM symbol of the corresponding another part PRB of PRB arrange non-zero power
The RI-RS of CSI-RS measuring channel sequence and feed back to base station, so as to realize minimum 2RE/PRB's
The power of RI-RS is improve while RI-RS expenses, and then improves estimation essences of the RI-RS to channel sequence
Degree.
Alternatively, the frame structure configuration of the RI-RS can be K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
For example, it is assumed that 100 PRB are included in the whole bandwidth of RI-RS, then can by the 7th it is continuous in
Between the corresponding RE positions of corresponding OFDM symbol of PRB non-zero power CSI-RS, other PRB are set
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, and then realize part PRB's
Accordingly the corresponding RE positions of OFDM symbol arrange zero energy CSI-RS, and another part PRB's is corresponding
The corresponding RE positions of OFDM symbol arrange the frame structure collocation form of the RI-RS of non-zero power CSI-RS,
So as to the power of RI-RS is improve while the RI-RS expenses of minimum 2RE/PRB are realized, and then
Improve estimated accuracies of the RI-RS to channel sequence.
Alternatively, the frame structure configuration of the RI-RS can also be by the phase of n-th PRB in each subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
For example, by taking TDD system as an example, the frame structure configuration figure of RI-RS two-port can be such as left side in Fig. 5 A
Shown in figure, wherein N=1, M=1, in figure, 0,1 represents two ports of RI-RS respectively, by Fig. 5 A
Middle left hand view understands, is located in corresponding OFDM symbol #8 of the first subcarrier and #10 of first PRB
RE positions arrange non-zero power CSI-RS to send CSI-RS sequences, the first of second PRB
The RE positions that corresponding OFDM symbol #8 of subcarrier and #10 are located arrange zero energy CSI-RS and (beat
Hole) so that the power on the RE positions of adjacent transmission CSI-RS sequences strengthens, and then realize most
The power of RI-RS is improve while the RI-RS expenses of little 2RE/PRB, and Jing experiments understand that maximum can
Hoisting power is 3dB, further, the frame structure configuration figure of the RI-RS two-port by taking FDD system as an example can
As shown in right part of flg in Fig. 5 A, the embodiment of the present invention is not repeated to this.Correspondingly, in M=1, with
As a example by TDD system, the frame structure configuration figure of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 B institutes
Show.
Again for example, work as N=1, during M=2, the frame structure configuration of the RI-RS two-port comprising multiple PRB
Figure can as shown in Figure 5 C, and Jing experiments understand that the configuration mode is realizing the RI-RS of minimum 2RE/PRB
While expense, the 4.7dB by the power ascension of RI-RS；Further, as M=3, comprising multiple PRB
RI-RS two-port frame structure configuration figure can as shown in Figure 5 D, the configuration mode is realizing minimum
While the RI-RS expenses of 2RE/PRB, the 6dB by the power ascension of RI-RS.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes
To configure the RE positions for sending CSI-RS sequences, can specifically be embodied as：By the n-th of i-th subframe
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, i+1 subframe
The corresponding RE positions of corresponding OFDM symbol of N+1 PRB non-zero power CSI-RS is set, and
Every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB, non-zero power is set
The corresponding RE positions symbols of corresponding OFDM of CSI-RS, other PRB arrange zero energy CSI-RS, its
The corresponding RE of corresponding OFDM symbol of minor frame next PRB successively after one PRB of rearward displacement
Position arranges non-zero power CSI-RS, and the corresponding OFDM symbol of the next PRB every M PRB
Corresponding RE positions arrange non-zero power CSI-RS, the corresponding RE positions of corresponding OFDM of other PRB
Set symbol arranges zero energy CSI-RS, wherein, i, N, M are positive integer.
For example, i=1, N=1 are worked as, during M=2, it is assumed that the frame structure of the RI-RS comprising 3 subframes
It is configured to：Arrange in the corresponding RE positions of the corresponding OFDM symbol of first PRB of first subframe
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every 2 PRB
Position arranges zero energy CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB arrange non-
Zero energy CSI-RS, in the corresponding RE positions of the corresponding OFDM symbol of second PRB of second subframe
Install zero setting power CSI-RS, and the corresponding OFDM symbol correspondence of the next PRB every 2 PRB
RE positions arrange zero energy CSI-RS, the corresponding RE positions symbols of corresponding OFDM of other PRB
Non-zero power CSI-RS is set, it is corresponding in the corresponding OFDM symbol of the 3rd PRB of the 3rd subframe
RE positions arrange zero energy CSI-RS, and the corresponding OFDM symbol of the next PRB every 2 PRB
Corresponding RE positions arrange zero energy CSI-RS, and the corresponding OFDM of the next PRB every 2 PRB
The corresponding RE positions of symbol arrange zero energy CSI-RS, the corresponding RE of corresponding OFDM of other PRB
Position symbol arranges non-zero power CSI-RS, specifically can be as shown in fig. 6, being RI-RS two in TDD system
The frame structure configuration figure of port, wherein, 0,1 represents two ports of RI-RS respectively.
The embodiment of the present invention two provides a kind of method for obtaining channel sequence in a communications system, in the method
In, terminal receives reference signal RI-RS for measuring channel sequence that base station sends, wherein, the RI-RS
Frame structure be configured to the corresponding RE positions of corresponding OFDM symbol of part PRB zero energy be set
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges non-zero power CSI-RS, and measures channel sequence according to the RI-RS, and measurement is obtained
Channel sequence feed back to the base station, to know corresponding channel capacity by the base station.That is,
In technical scheme described in the embodiment of the present invention, base station is configured to part PRB by sending frame structure to terminal
To arrange zero energy CSI-RS corresponding with the part PRB the corresponding RE positions of corresponding OFDM symbol
The corresponding RE positions of corresponding OFDM symbol of another part PRB non-zero power CSI-RS is set
RI-RS, so as to the power of RI-RS is improve while the RI-RS expenses of minimum 2RE/PRB are realized,
And then improve estimated accuracies of the RI-RS to channel sequence.
Embodiment three
The embodiment of the present invention three by taking the execution of base station and terminal interaction as an example, to institute in the embodiment of the present invention one to two
The method for stating acquisition channel sequence in a communications system is further described, as shown in figure 8, which is the present invention
The schematic flow sheet of the method for obtaining channel sequence in a communications system described in embodiment three, methods described can be wrapped
Include following steps：
Step 801：Base station is sent for measuring reference signal RI-RS of channel sequence to terminal, wherein, institute
The frame structure for stating RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB and arranges zero
Power CSI-RS, the corresponding OFDM symbol of another part PRB corresponding to the part PRB are corresponding
RE positions arrange non-zero power CSI-RS.
Alternatively, the frame structure configuration of the RI-RS can be K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Alternatively, the frame structure configuration of the RI-RS can also be by the corresponding OFDM symbols of first PRB
Number corresponding RE positions arrange zero energy CSI-RS, and every N number of PRB next PRB it is corresponding
The corresponding RE positions of OFDM symbol arrange zero energy CSI-RS, the corresponding OFDM correspondences of other PRB
RE positions symbols non-zero power CSI-RS is set, wherein, N is positive integer.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes
To configure the RE positions for sending CSI-RS sequences, can specifically be embodied as：By the n-th of i-th subframe
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, i+1 subframe
The corresponding RE positions of corresponding OFDM symbol of N+1 PRB non-zero power CSI-RS is set, and
Every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB, non-zero power is set
The corresponding RE positions symbols of corresponding OFDM of CSI-RS, other PRB arrange zero energy CSI-RS, its
The corresponding RE of corresponding OFDM symbol of minor frame next PRB successively after one PRB of rearward displacement
Position arranges non-zero power CSI-RS, and the corresponding OFDM symbol of the next PRB every M PRB
Corresponding RE positions arrange non-zero power CSI-RS, the corresponding RE positions of corresponding OFDM of other PRB
Set symbol arranges zero energy CSI-RS, wherein, i, N, M are positive integer.
Step 802：Terminal receives the RI-RS, and measures channel sequence according to the RI-RS, and will
The channel sequence that measurement is obtained feeds back to the base station.
Step 803：Base station receives the channel sequence of the terminal feedback, to know corresponding channel capacity.
The embodiment of the present invention three provides a kind of method for obtaining channel sequence in a communications system, in the method
In, base station is sent for measuring reference signal RI-RS of channel sequence to terminal, with by the terminal according to connecing
The RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to into the base station, wherein,
The frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB and arranges
Zero energy CSI-RS, the corresponding OFDM symbol pair of another part PRB corresponding to the part PRB
The RE positions answered arrange non-zero power CSI-RS, and the channel sequence of the reception terminal feedback, to know
Corresponding channel capacity.That is, in technical scheme described in the embodiment of the present invention, base station is by end
End sends the corresponding RE positions setting zero energy of corresponding OFDM symbol that frame structure is configured to part PRB
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges the RI-RS of non-zero power CSI-RS, so as to open in the RI-RS for realizing minimum 2RE/PRB
The power of RI-RS is improve while pin, and then improves estimated accuracies of the RI-RS to channel sequence.
Example IV
Based on one identical inventive concept of the embodiment of the present invention, the embodiment of the present invention four provide a kind of base
Stand, being embodied as of the base station can be found in the associated description in said method embodiment one, repeat part no longer
Repeat, its structural representation is as shown in figure 9, the base station mainly may include：
Transmitting element 91, can be used for terminal sending for measuring reference signal RI-RS of channel sequence, with by
The terminal is according to the RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to
The base station, wherein, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of part PRB
The RE positions answered arrange zero energy CSI-RS, the phase of another part PRB corresponding with the part PRB
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set；
Receiving unit 92, can be used to receive the channel sequence of the terminal feedback, to know corresponding channel capacity.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, based on two identical inventive concept of the embodiment of the present invention, the embodiment of the present invention four also carries
A kind of terminal is supplied, being embodied as of the terminal can be found in the associated description in said method embodiment two, weight
Multiple part is repeated no more, and as shown in Figure 10, the terminal mainly may include its structural representation：
Receiving unit 101, can be used to receive reference signal RI-RS for measuring channel sequence that base station sends,
Wherein, the frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB
Zero setting power CSI-RS is installed, the corresponding OFDM of another part PRB corresponding to the part PRB
The corresponding RE positions of symbol arrange non-zero power CSI-RS；
Processing unit 102, can be used to measure channel sequence, and the channel that measurement is obtained according to the RI-RS
Order feeds back to the base station, to know corresponding channel capacity by the base station.
Further, the frame structure of the RI-RS is configured to K company in the whole bandwidth by RI-RS
In the middle of continuous, the corresponding RE positions of the corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, other PRB
Corresponding OFDM corresponding RE positions symbols zero energy CSI-RS is set, wherein, K is positive integer.
Further, the frame structure of the RI-RS is configured to the corresponding of n-th PRB in each subframe
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, N, M are positive integer.
Further, the frame structure of the RI-RS is configured to add frequency shift (FS) between each subframe.
Further, the frame structure of the RI-RS is configured to the phase of n-th PRB of i-th subframe
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, the N+1 of i+1 subframe is individual
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, and every M
The corresponding RE positions of corresponding OFDM symbol of next PRB of PRB arrange non-zero power CSI-RS, its
The corresponding RE positions symbols of corresponding OFDM of its PRB arrange zero energy CSI-RS, and remaining subframe is successively
The corresponding RE positions of corresponding OFDM symbol of the next PRB after one PRB of rearward displacement arrange non-
Zero energy CSI-RS, and the corresponding RE of corresponding OFDM symbol of the next PRB every M PRB
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, i, N, M are positive integer.
Further, based on the embodiment of the present invention one and two identical inventive concepts, the embodiment of the present invention four
A kind of system for obtaining channel sequence in a communications system is additionally provided, being embodied as of the system can be found in above-mentioned
Associated description in embodiment of the method one and two, repeats part and repeats no more, its structural representation such as Figure 11
Shown, the system for obtaining channel sequence in a communications system mainly may include：
Base station 111, can be used for terminal 112 sending for measuring reference signal RI-RS of channel sequence, its
In, the frame structure of the RI-RS is configured to the corresponding RE positions of corresponding OFDM symbol of part PRB
Zero energy CSI-RS, the corresponding OFDM symbols of another part PRB corresponding to the part PRB are set
Number corresponding RE positions arrange non-zero power CSI-RS, and, receive the channel of the feedback of terminal 112
Order, to know corresponding channel capacity.
Terminal 112, for receiving the RI-RS of the transmission of the base station 111, and according to the RI-RS
Measurement channel sequence, and, the channel sequence that measurement is obtained is fed back to into the base station 111.
That is, in technical scheme described in the embodiment of the present invention, base station is by sending frame structure to terminal
The corresponding RE positions of corresponding OFDM symbol for being configured to part PRB arrange zero energy CSI-RS, with institute
The corresponding RE positions of corresponding OFDM symbol for stating the corresponding another part PRB of part PRB arrange non-zero
The RI-RS of power CSI-RS, so as to improve while the RI-RS expenses of minimum 2RE/PRB are realized
The power of RI-RS, and then improve estimated accuracies of the RI-RS to channel sequence.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment),
Or computer program.Therefore, the present invention can using complete hardware embodiment, complete software embodiment,
Or with reference to the form of the embodiment in terms of software and hardware.And, the present invention can using at one or more its
In include computer-usable storage medium (the including but not limited to disk storage of computer usable program code
Device, CD-ROM, optical memory etc.) on the form of computer program implemented.
The present invention is with reference to method according to embodiments of the present invention, device (equipment) and computer program
Flow chart and/or block diagram describing.It should be understood that can by computer program instructions flowchart and/or
Each flow process and/or square frame and flow chart and/or flow process and/or square frame in block diagram in block diagram
With reference to.These computer program instructions can be provided to general purpose computer, special-purpose computer, Embedded Processor
Or the processor of other programmable data processing devices is producing a machine so that by computer or other
The instruction of the computing device of programmable data processing device produce for realizing in one flow process of flow chart or
The device of the function of specifying in one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and computer or other programmable datas process can be guided to set
In the standby computer-readable memory for working in a specific way so that be stored in the computer-readable memory
Instruction produce and include the manufacture of command device, command device realization is in one flow process or multiple of flow chart
The function of specifying in one square frame of flow process and/or block diagram or multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices, made
Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place
Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one
The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.
, but those skilled in the art once know base although preferred embodiments of the present invention have been described
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to include preferred embodiment and fall into the had altered of the scope of the invention and change.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (21)
1. it is a kind of in a communications system obtain channel sequence method, it is characterised in that include：
Base station is sent for measuring reference signal RI-RS of channel sequence to terminal, with by the terminal according to connecing
The RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to into the base station, wherein,
The frame structure of the RI-RS is configured to the respective orthogonal frequency multiplexing technique of part physical Resource Block PRB
The corresponding Resource Unit RE positions of OFDM symbol arrange zero energy channel state information reference signals
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges non-zero power CSI-RS；
The channel sequence of the terminal feedback is received, to know corresponding channel capacity.
2. the method for claim 1, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding RE positions of corresponding OFDM symbol of PRB in the middle of will be K in the whole bandwidth of RI-RS continuous
Non-zero power CSI-RS is installed, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero
Power CSI-RS, wherein, K is positive integer.
3. the method for claim 1, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding OFDM symbol of n-th PRB in each subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
CSI-RS, wherein, N, M are positive integer.
4. the method as described in arbitrary in claim 1-3, it is characterised in that the frame knot of the RI-RS
Structure is configured to add frequency shift (FS) between each subframe.
5. method as claimed in claim 4, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding OFDM symbol of n-th PRB of i-th subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
The corresponding RE positions of corresponding OFDM symbol of CSI-RS, N+1 PRB of i+1 subframe set
Non-zero power CSI-RS is put, and it is corresponding every the corresponding OFDM symbol of next PRB of M PRB
RE positions arrange non-zero power CSI-RS, the corresponding RE positions symbols of corresponding OFDM of other PRB
Zero energy CSI-RS is set, and remaining subframe next PRB's successively after one PRB of rearward displacement is corresponding
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, i, N, M are positive integer.
6. it is a kind of in a communications system obtain channel sequence method, it is characterised in that include：
Terminal receives reference signal RI-RS for measuring channel sequence that base station sends, wherein, the RI-RS
Frame structure be configured to the respective orthogonal frequency multiplexing technique OFDM symbol pair of part physical Resource Block PRB
The Resource Unit RE positions answered arrange zero energy channel state information reference signals CSI-RS, with the part
The corresponding RE positions of corresponding OFDM symbol of the corresponding another part PRB of PRB arrange non-zero power
CSI-RS；
Channel sequence is measured according to the RI-RS, and the channel sequence that measurement is obtained is fed back to into the base station, with
Corresponding channel capacity is known by the base station.
7. method as claimed in claim 6, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding RE positions of corresponding OFDM symbol of PRB in the middle of will be K in the whole bandwidth of RI-RS continuous
Non-zero power CSI-RS is installed, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero
Power CSI-RS, wherein, K is positive integer.
8. method as claimed in claim 6, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding OFDM symbol of n-th PRB in each subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
CSI-RS, wherein, N, M are positive integer.
9. the method as described in arbitrary in claim 6-8, it is characterised in that the frame knot of the RI-RS
Structure is configured to add frequency shift (FS) between each subframe.
10. method as claimed in claim 9, it is characterised in that the frame structure of the RI-RS is configured to
The corresponding OFDM symbol of n-th PRB of i-th subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
The corresponding RE positions of corresponding OFDM symbol of CSI-RS, N+1 PRB of i+1 subframe set
Non-zero power CSI-RS is put, and it is corresponding every the corresponding OFDM symbol of next PRB of M PRB
RE positions arrange non-zero power CSI-RS, the corresponding RE positions symbols of corresponding OFDM of other PRB
Zero energy CSI-RS is set, and remaining subframe next PRB's successively after one PRB of rearward displacement is corresponding
The corresponding RE positions of OFDM symbol arrange non-zero power CSI-RS, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, i, N, M are positive integer.
11. a kind of base stations, it is characterised in that include：
Transmitting element, for sending for measuring reference signal RI-RS of channel sequence, with by described to terminal
Terminal is according to the RI-RS measurements channel sequence for receiving, and the channel sequence that measurement is obtained is fed back to described
Base station, wherein, the frame structure of the RI-RS is configured to the respective orthogonal frequency of part physical Resource Block PRB
Divide multiplex technique OFDM symbol corresponding Resource Unit RE positions that the reference of zero energy channel condition information is set
Signal CSI-RS, the corresponding OFDM symbol of another part PRB corresponding to the part PRB are corresponding
RE positions arrange non-zero power CSI-RS；
Receiving unit, for receiving the channel sequence of the terminal feedback, to know corresponding channel capacity.
12. base stations as claimed in claim 11, it is characterised in that the frame structure configuration of the RI-RS
Be K in the whole bandwidth by RI-RS it is continuous in the middle of PRB the corresponding RE of corresponding OFDM symbol
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, K is positive integer.
13. base stations as claimed in claim 11, it is characterised in that the frame structure configuration of the RI-RS
It is that the corresponding OFDM symbol of n-th PRB in each subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
CSI-RS, wherein, N, M are positive integer.
14. base stations as described in arbitrary in claim 11-13, it is characterised in that the frame of the RI-RS
Structure is configured to add frequency shift (FS) between each subframe.
15. base stations as claimed in claim 14, it is characterised in that the frame structure configuration of the RI-RS
It is that the corresponding OFDM symbol of n-th PRB of i-th subframe corresponding RE positions are arranged into non-zero power
Rate CSI-RS, and every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero power
Rate CSI-RS, the corresponding RE positions of corresponding OFDM symbol of N+1 PRB of i+1 subframe
Non-zero power CSI-RS, and the corresponding OFDM symbol correspondence of the next PRB every M PRB are set
RE positions arrange non-zero power CSI-RS, the corresponding RE position signs of corresponding OFDM of other PRB
Number zero energy CSI-RS, the phase of remaining subframe next PRB successively after one PRB of rearward displacement are set
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, i, N, M are positive integer.
16. a kind of terminals, it is characterised in that include：
Receiving unit, for receiving reference signal RI-RS for measuring channel sequence of base station transmission, wherein,
The frame structure of the RI-RS is configured to the respective orthogonal frequency multiplexing technique of part physical Resource Block PRB
The corresponding Resource Unit RE positions of OFDM symbol arrange zero energy channel state information reference signals
CSI-RS, the corresponding RE of corresponding OFDM symbol of another part PRB corresponding to the part PRB
Position arranges non-zero power CSI-RS；
Processing unit, for measuring channel sequence, and the channel sequence feedback that measurement is obtained according to the RI-RS
To the base station, to know corresponding channel capacity by the base station.
17. terminals as claimed in claim 16, it is characterised in that the frame structure configuration of the RI-RS
Be K in the whole bandwidth by RI-RS it is continuous in the middle of PRB the corresponding RE of corresponding OFDM symbol
Position arranges non-zero power CSI-RS, and the corresponding RE positions symbols of corresponding OFDM of other PRB are arranged
Zero energy CSI-RS, wherein, K is positive integer.
18. terminals as claimed in claim 16, it is characterised in that the frame structure configuration of the RI-RS
It is that the corresponding OFDM symbol of n-th PRB in each subframe corresponding RE positions are arranged into non-zero power
CSI-RS, and set every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is put, the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero energy
CSI-RS, wherein, N, M are positive integer.
19. terminals as described in arbitrary in claim 16-18, it is characterised in that the frame of the RI-RS
Structure is configured to add frequency shift (FS) between each subframe.
20. terminals as claimed in claim 19, it is characterised in that the frame structure configuration of the RI-RS
It is that the corresponding OFDM symbol of n-th PRB of i-th subframe corresponding RE positions are arranged into non-zero power
Rate CSI-RS, and every the corresponding RE positions of corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and the corresponding RE positions symbols of corresponding OFDM of other PRB arrange zero power
Rate CSI-RS, the corresponding RE positions of corresponding OFDM symbol of N+1 PRB of i+1 subframe
Non-zero power CSI-RS, and the corresponding OFDM symbol correspondence of the next PRB every M PRB are set
RE positions arrange non-zero power CSI-RS, the corresponding RE position signs of corresponding OFDM of other PRB
Number zero energy CSI-RS, the phase of remaining subframe next PRB successively after one PRB of rearward displacement are set
Answer OFDM symbol corresponding RE positions that non-zero power CSI-RS is set, and every the next of M PRB
The corresponding RE positions of corresponding OFDM symbol of PRB arrange non-zero power CSI-RS, the phase of other PRB
Answer OFDM corresponding RE positions symbols that zero energy CSI-RS is set, wherein, i, N, M are positive integer.
21. a kind of systems for obtaining channel sequence in a communications system, it is characterised in that include：
Base station, for sending for measuring reference signal RI-RS of channel sequence to terminal, wherein, it is described
The frame structure of RI-RS is configured to respective orthogonal frequency multiplexing technique OFDM of part physical Resource Block PRB
The corresponding Resource Unit RE positions of symbol arrange zero energy channel state information reference signals CSI-RS, with institute
The corresponding RE positions of corresponding OFDM symbol for stating the corresponding another part PRB of part PRB arrange non-zero
Power CSI-RS, and, the channel sequence of the terminal feedback is received, to know corresponding channel capacity；
Terminal, for receiving the RI-RS that the base station sends, and measures channel according to the RI-RS
Order, and, the channel sequence that measurement is obtained is fed back to into the base station.
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