CN106549740B - A kind of method, apparatus and system obtaining channel sequence in a communications system - Google Patents
A kind of method, apparatus and system obtaining channel sequence in a communications system Download PDFInfo
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- CN106549740B CN106549740B CN201510609076.9A CN201510609076A CN106549740B CN 106549740 B CN106549740 B CN 106549740B CN 201510609076 A CN201510609076 A CN 201510609076A CN 106549740 B CN106549740 B CN 106549740B
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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
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Abstract
The invention discloses a kind of methods for obtaining channel sequence in a communications system, apparatus and system, in the method, base station sends the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol that frame structure is configured to part PRB to terminal, the RI-RS of the corresponding position the RE setting non-zero power CSI-RS of the corresponding OFDM symbol of another part PRB answered to the part PRB pair, wherein, the part PRB and another part PRB are located in same subframe, to measure channel sequence according to the RI-RS received by the terminal, and the channel sequence that measurement obtains is fed back into the base station, to know corresponding channel capacity, to improve the power of RI-RS while the RI-RS expense for realizing minimum 2RE/PRB, in turn RI-RS is improved to the estimated accuracy of channel sequence.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method for obtaining channel sequence in a communications system,
Apparatus and system.
Background technique
Existing communication system is passed as being used to improve system in LTE (Long Term Evolution, long term evolution) system
Transmission quality, the mode for improving power system capacity generally use traditional 2D MIMO (Multiple-Input Multiple-
Output, multiple-input and multiple-output) technology, the basic principle is that improving transmission matter using the two-dimensional space freedom degree on horizontal plane
Amount improves power system capacity.In current physical layer technology not compared under quantum jump background, how further future broadband wireless communication systems are
Transmission quality, spectrum efficiency are improved, more feasible direction is abundant excavation vertical space freedom degree, traditional 2D MIMO skill
Art expands to 3D MIMO technology, and the freedom degree of three-dimensional space is made full use of to improve system performance.3D-MIMO antenna distribution map
It can be as shown in Figure 1, the antenna of the N root horizontal direction in original 2D mimo antenna distribution to be extended to the N of matrix form in figure
× M ties up antenna, and wherein horizontal direction has N root antenna, and vertical direction has M root antenna, and every horizontal antenna originally is vertical by M
The antenna element in direction forms.
During disposing 3D-MIMO antenna, original 2~8 channel is extended to more than 8 channels, for example, typically
There are 16,32,64 or 128 channels etc., since port number is excessive, base station obtains CSI by way of feeding back based on code book
When (Channel State Indication, channel state information), if directly transmitting the CSI-RS of 32 or 64 ports
(Channel State Indication-reference signal channel state information reference signals), then will lead to CSI-
RS expense is excessive, and code book feedback quantity also greatly increases.Specifically, it is contemplated that the requirement of CSI-RS precision of channel estimation, CSI-
The expense of RS is the port 1RE/PRB/, and the CSI-RS expense of 32 ports is 32RE/PRB, and expense is larger.With 2 port CSI-RS
For, existing TDD (Time Division Duplexing, time division duplex) system and FDD (Frequency Division
Dual, frequency division duplex) in system, the resource location that CSI-RS is occupied respectively can be as shown in Figure 2.It should be noted that existing
CSI-RS is divided to for two kinds: zero energy ZP CSI-RS and non-zero power NZP CSI-RS.NZP CSI-RS refers in PRB
It sends out (Resource Element, the resource unit) position corresponding RE of (Physical Resource Block, Physical Resource Block)
CSI-RS sequence is sent, estimates channel for UE, ZP CSI-RS refers to punch in the corresponding position RE PRB, any signal is not sent,
Interference when for reducing the estimation of adjacent cell NZP CSI-RS upper signal channel.
And when obtaining CSI according to the mode based on channel reciprocity, it is contemplated that terminal transmission antenna number NTXLess than reception
Antenna number NRXThe case where, terminal usually only configures 1 transmission antenna, and the mode based on channel reciprocity is only capable of supporting NTXStream
Transmission or even single-stream transmission, lead to not provide multiple stream transmission well.
Therefore, it in order to preferably support multiple stream transmission and guarantee lower CSI-RS expense, can be sent by base station end
It is only used for the reference signal RI-RS of measurement channel sequence, such terminal is based on this feedback channel order, preferably multithread can be supported to pass
It is defeated.That is, the frame structure configuration mode of existing CSI-RS can be directly used to obtain the order of channel.But due to terminal
RI-RS is estimated only for obtaining channel sequence, and not only includes RI (rank in the CSI for utilizing CSI-RS measurement to obtain
Indication, order index), it further include CQI (Channel Quality Indicator, channel quality instruction) and/or PMI
Therefore (Precoding Matrix Indicator, pre-coding matrix instruction) etc. is configured using the frame structure of existing CSI-RS
Mode is larger come the order expense for obtaining channel.
In addition, CSI-RS is cell level transmission, it is contemplated that the advantage for giving full play to 3D-MIMO enhancing covering then needs
The power for sending CSI-RS sequence is improved, as shown in figure 3, enhance power configuration schematic diagram for NZP CSI-RS in the prior art,
0, the 1 corresponding position RE is marked in figure for sending NZP CSI-RS sequence, corresponding two shades below 0, the 1 corresponding position RE
The position RE user send ZP CSI-RS, the power on two shades is added on 0, the 1 corresponding position RE, to mention
Rise the power of NZP CSI-RS.But need to configure two sets of CSI-RS information modes for terminal thus to inform that terminal sends NZP
The position RE of CSI-RS sequence and the position RE of ZP CSI-RS, minimal-overhead 4RE/PRB, if it is desired to further be promoted
Power then needs bigger CSI-RS expense.
As shown in the above, when system only needs to obtain channel sequence, according to the frame structure configuration side of existing CSI-RS
Formula obtains the order of channel, then can there are problems that CSI-RS expense increases with power ascension.
Summary of the invention
The embodiment of the invention provides a kind of method, apparatus and system for obtaining channel sequence in a communications system, to solve
Certainly when system only needs to obtain channel sequence, the order of channel is obtained according to the frame structure configuration mode of existing CSI-RS, then can
There are problems that CSI-RS expense increases with power ascension.
The embodiment of the invention provides a kind of methods for obtaining channel sequence in a communications system, comprising:
Base station sends the reference signal RI-RS for measuring channel sequence to terminal, with by the terminal according to receiving
The RI-RS measures channel sequence, and the channel sequence that measurement obtains is fed back to the base station, wherein the frame structure of the RI-RS
It is configured to corresponding OFDM (Orthogonal Frequency Division Multiplexing, the orthogonal frequency division multiplexing of part PRB
With technology) zero energy CSI-RS is arranged in the corresponding position RE of symbol, and it is corresponding to another part PRB that the part PRB pair is answered
Non-zero power CSI-RS is arranged in the corresponding position RE of OFDM symbol, wherein the part PRB is located at another part PRB
In same subframe;
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 the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, the embodiment of the invention also provides another methods for obtaining channel sequence in a communications system, comprising:
Terminal receives the reference signal RI-RS for being used to measure channel sequence that base station is sent, wherein the frame knot of the RI-RS
Structure is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, answers with the part PRB pair
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of another part PRB, wherein the part PRB and institute
Another part PRB is stated to be located in same subframe;
Channel sequence is measured according to the RI-RS, and the channel sequence that measurement obtains is fed back into the base station, by the base
Know corresponding channel capacity in station.
Further, the frame structure of the RI-RS is configured to the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, the embodiment of the invention also provides a kind of base stations, comprising:
Transmission unit, for sending the reference signal RI-RS for measuring channel sequence to terminal, with by the terminal according to
The RI-RS measurement channel sequence received, and the channel sequence that measurement obtains is fed back into the base station, wherein the RI-RS
Frame structure be configured to the corresponding OFDM symbol corresponding position the RE setting zero energy CSI-RS of part PRB, with the part PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of corresponding another part PRB, wherein the part
PRB and another part PRB are located in same subframe;
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 the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, the embodiment of the invention also provides a kind of terminals, comprising:
Receiving unit, for receiving the reference signal RI-RS for being used to measure channel sequence of base station transmission, wherein the RI-
The frame structure of RS is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, with the part
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol for another part PRB that PRB pair is answered, wherein the portion
PRB and another part PRB is divided to be located in same subframe;
The channel sequence that measurement obtains for measuring channel sequence according to the RI-RS, and is fed back to the base by processing unit
It stands, to know corresponding channel capacity by the base station.
Further, the frame structure of the RI-RS is configured to the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, the embodiment of the invention also provides a kind of systems for obtaining channel sequence in a communications system, comprising:
Base station, for sending the reference signal RI-RS for measuring channel sequence to terminal, wherein the frame knot of the RI-RS
Structure is configured to the corresponding OFDM symbol position the corresponding resource unit RE setting zero energy CSI-RS of part PRB, with the part
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol for another part PRB that PRB pair is answered, and, receive institute
The channel sequence for stating terminal feedback, to know corresponding channel capacity, wherein the part PRB is located at another part PRB
In same subframe.
Terminal, the RI-RS sent for receiving the base station, and channel sequence is measured according to the RI-RS, and,
The channel sequence that measurement obtains is fed back into the base station.
The present invention has the beneficial effect that:
The embodiment of the invention provides a kind of method, apparatus and system for obtaining channel sequence in a communications system, in the party
In method, base station sends the reference signal RI-RS for measuring channel sequence to terminal, with as the terminal according to receiving
RI-RS measures channel sequence, and the channel sequence that measurement obtains is fed back to the base station, wherein the frame structure of the RI-RS configures
For the corresponding OFDM symbol corresponding position RE of part PRB, zero energy CSI-RS, another portion answered with the part PRB pair are set
Divide the corresponding OFDM symbol of the PRB corresponding position RE that non-zero power CSI-RS is set, and receives the channel of the terminal feedback
Order, to know corresponding channel capacity.That is, in the technical solution described in the embodiment of the present invention, base station is by terminal
Zero energy CSI-RS and the part is arranged in the corresponding position RE of corresponding OFDM symbol that transmission frame structure is configured to part PRB
The RI-RS of the corresponding position the RE setting non-zero power CSI-RS of the corresponding OFDM symbol for another part PRB that PRB pair is answered, thus
The power of RI-RS is improved while the RI-RS expense for realizing minimum 2RE/PRB, and then improves RI-RS to channel sequence
Estimated accuracy.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 show 3DMIMO antenna schematic diagram in the prior art;
Fig. 2 show the frame structure configuration schematic diagram of CSI-RS in the prior art;
Fig. 3, which show NZP CSI-RS in the prior art, enhances power configuration schematic diagram;
The process that Fig. 4 show the method that one kind described in the embodiment of the present invention one obtains channel sequence in a communications system is shown
It is intended to;
Fig. 5 A show a kind of frame structure configuration schematic diagram of RI-RS described in the embodiment of the present invention one;
Fig. 5 B show a kind of frame structure configuration schematic diagram of RI-RS described in the embodiment of the present invention one;
Fig. 5 C show a kind of another frame structure configuration schematic diagram of RI-RS described in the embodiment of the present invention one;
Fig. 5 D show a kind of another frame structure configuration schematic diagram of RI-RS described in the embodiment of the present invention one;
Fig. 6 show a kind of another frame structure configuration schematic diagram of RI-RS described in the embodiment of the present invention one;
Fig. 7 show the process that another kind described in the embodiment of the present invention two obtains the method for channel sequence in a communications system
Schematic diagram;
Fig. 8 show the interactive stream that one kind described in the embodiment of the present invention three obtains the method for channel sequence in a communications system
Journey schematic diagram;
Fig. 9 show a kind of structural schematic diagram of base station described in the embodiment of the present invention four;
Figure 10 show a kind of structural schematic diagram of terminal described in the embodiment of the present invention four;
Figure 11 show the structure that one kind described in the embodiment of the present invention four obtains the system of channel sequence in a communications system
Schematic diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present 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 this
The flow diagram of the method for channel sequence is obtained described in inventive embodiments one in a communications system, the method may include following
Step:
Step 401: base station sends the reference signal RI-RS for measuring channel sequence to terminal, with by the terminal according to
The RI-RS measurement channel sequence received, and the channel sequence that measurement obtains is fed back into the base station, wherein the RI-RS
Frame structure be configured to the corresponding OFDM symbol corresponding position the RE setting zero energy CSI-RS of part PRB, with the part PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of corresponding another part PRB.
Wherein, the part PRB and another part PRB are located in same subframe.
Step 402: the channel sequence of the terminal feedback is received, to know corresponding channel capacity.
That is, base station is configured to by sending frame structure to terminal in the technical solution described in the embodiment of the present invention
Zero energy CSI-RS, the another part answered with the part PRB pair is arranged in the corresponding position RE of the corresponding OFDM symbol of part PRB
The RI-RS of the corresponding OFDM symbol of the PRB corresponding position RE setting non-zero power CSI-RS, wherein the part PRB with it is described
Another part PRB is located in same subframe, to improve RI-RS while the RI-RS expense for realizing minimum 2RE/PRB
Power, and then improve RI-RS to the estimated accuracy of channel sequence.
Optionally, the frame structure configuration of the RI-RS can be for by the continuous intermediate PRB's of K in the whole bandwidth of RI-RS
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
It, then can be by the corresponding of 7 continuous intermediate PRB for example, it is assumed that include 100 PRB in the whole bandwidth of RI-RS
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, and then realize that zero energy CSI-RS, another portion is arranged in the corresponding position RE of the corresponding OFDM symbol of part PRB
Divide the frame structure collocation form of the RI-RS of the corresponding position the RE setting non-zero power CSI-RS of the corresponding OFDM symbol of PRB, thus
The power of RI-RS is improved while the RI-RS expense for realizing minimum 2RE/PRB, and then improves RI-RS to channel sequence
Estimated accuracy.
Optionally, the frame structure configuration of the RI-RS can also be by the corresponding OFDM symbol of the n-th PRB in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
N, M are positive integer.
For example, by taking TDD system as an example, the frame structure configuration diagram of RI-RS two-port can as shown in left hand view in Fig. 5 A, wherein
N=1, M=1, in figure, 0,1 respectively indicates two ports of RI-RS, by left hand view in Fig. 5 A it is found that the of first PRB
Where the corresponding OFDM symbol #8 and #10 of one subcarrier the position RE setting non-zero power CSI-RS to send CSI-RS sequence,
The position RE setting zero energy CSI-RS where the corresponding OFDM symbol #8 and #10 of the first subcarrier in second PRB (is beaten
Hole) so that the power enhancing on the adjacent position RE for sending CSI-RS sequence, and then realize the RI- of minimum 2RE/PRB
Improve the power of RI-RS while RS expense, and through maximum known to experiment can hoisting power be 3dB, further more, with FDD system
For the frame structure configuration diagram of RI-RS two-port can be as shown in right part of flg in Fig. 5 A, the embodiment of the present invention does not repeat this.
Correspondingly, in M=1, by taking TDD system as an example, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 B
It is shown.
For another example work as N=1, when M=2, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 C institute
Show, and through experiment it is found that the configuration mode is while the RI-RS expense for realizing minimum 2RE/PRB, by the power of RI-RS
Improve 4.7dB;Further more, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be as shown in Figure 5 D as M=3,
The configuration mode is while the RI-RS expense for realizing minimum 2RE/PRB, by the power ascension of RI-RS 6dB.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes to configure
The position RE of CSI-RS sequence is sent, it is specific implementable are as follows: the corresponding OFDM symbol of the n-th PRB of i-th of subframe is corresponding
Non-zero power CSI-RS is arranged in the position RE, and every the corresponding position the RE setting of the corresponding OFDM symbol of next PRB of M PRB
Zero energy CSI-RS, i+1 subframe is arranged in the corresponding position the RE symbol of the corresponding OFDM of non-zero power CSI-RS, other PRB
The corresponding OFDM symbol corresponding position RE of the N+1 PRB non-zero power CSI-RS is set, and every the next of M PRB
Non-zero power CSI-RS, the corresponding position RE the corresponding OFDM of other PRB is arranged in the corresponding position RE of the corresponding OFDM symbol of PRB
Symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol pair of remaining subframe successively next PRB after one PRB of rearward displacement
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein i,
N, M are positive integer.
For example, work as i=1, when N=1, M=2, it is assumed that the frame structure of the RI-RS comprising 3 subframes is configured that
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of first PRB of one subframe, and every 2 PRB
The corresponding OFDM symbol corresponding position RE of next PRB non-zero power CSI-RS is set, the corresponding OFDM of other PRB is corresponding
Zero energy CSI-RS is arranged in the position RE symbol, in the corresponding position RE of corresponding OFDM symbol of second PRB of second subframe
Non-zero power CSI-RS is set, and non-zero power is set every the corresponding position RE of the corresponding OFDM symbol of next PRB of 2 PRB
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of rate CSI-RS, other PRB, in the third of third subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of a PRB, and every the corresponding of next PRB of 2 PRB
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, specifically can be as shown in fig. 6, be the frame structure configuration diagram of RI-RS two-port in TDD system, wherein 0,1 point
Not Biao Shi RI-RS two ports.
The embodiment of the present invention one provides a kind of method for obtaining channel sequence in a communications system, in the method, base station
The reference signal RI-RS for measuring channel sequence is sent to terminal, to be measured by the terminal according to the RI-RS received
Channel sequence, and the channel sequence that measurement obtains is fed back into the base station, wherein the frame structure of the RI-RS is configured to part PRB
The corresponding OFDM symbol corresponding position RE zero energy CSI-RS, the phase of another part PRB answered with the part PRB pair are set
Answer the corresponding position the RE setting non-zero power CSI-RS of OFDM symbol, wherein the part PRB and described another part PRB
In same subframe, and the channel sequence of the terminal feedback is received, to know corresponding channel capacity.That is, at this
In technical solution described in inventive embodiments, base station is by sending the corresponding OFDM symbol that frame structure is configured to part PRB to terminal
Zero energy CSI-RS is arranged in the corresponding position RE, and the corresponding OFDM symbol of another part PRB answered to the part PRB pair is corresponding
The position RE setting non-zero power CSI-RS RI-RS, to be mentioned while the RI-RS expense for realizing minimum 2RE/PRB
The high power of RI-RS, and then RI-RS is improved to the estimated accuracy of channel sequence.
Embodiment two
The embodiment of the present invention two to act the side of executioning as terminal, to described in the embodiment of the present invention one in communication system
The middle method for obtaining channel sequence is further described, as shown in fig. 7, it is described in the embodiment of the present invention two in communication system
The flow diagram of the middle method for obtaining channel sequence, the method can comprise the following steps that
Step 701: terminal receives the reference signal RI-RS for being used to measure channel sequence that base station is sent, wherein the RI-
The frame structure of RS is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, with the part
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol for another part PRB that PRB pair is answered.
Wherein, the part PRB and another part PRB are located in same subframe.
Step 702: channel sequence is measured according to the RI-RS, and the channel sequence that measurement obtains is fed back into the base station, with
Corresponding channel capacity is known by the base station.
That is, terminal is configured to part PRB by receiving frame structure in the technical solution described in the embodiment of the present invention
The corresponding OFDM symbol corresponding position RE zero energy CSI-RS, the phase of another part PRB answered with the part PRB pair are set
The RI-RS of the corresponding position the RE setting non-zero power CSI-RS of OFDM symbol is answered to measure channel sequence and feed back to base station, wherein
The part PRB and another part PRB are located in same subframe, thus in the RI-RS expense for realizing minimum 2RE/PRB
While improve the power of RI-RS, and then improve RI-RS to the estimated accuracy of channel sequence.
Optionally, the frame structure configuration of the RI-RS can be for by the continuous intermediate PRB's of K in the whole bandwidth of RI-RS
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
It, then can be by the corresponding of the 7th continuous intermediate PRB for example, it is assumed that include 100 PRB in the whole bandwidth of RI-RS
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, and then realize that zero energy CSI-RS, another portion is arranged in the corresponding position RE of the corresponding OFDM symbol of part PRB
Divide the frame structure collocation form of the RI-RS of the corresponding position the RE setting non-zero power CSI-RS of the corresponding OFDM symbol of PRB, thus
The power of RI-RS is improved while the RI-RS expense for realizing minimum 2RE/PRB, and then improves RI-RS to channel sequence
Estimated accuracy.
Optionally, the frame structure configuration of the RI-RS can also be by the corresponding OFDM symbol of the n-th PRB in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
N, M are positive integer.
For example, by taking TDD system as an example, the frame structure configuration diagram of RI-RS two-port can as shown in left hand view in Fig. 5 A, wherein
N=1, M=1, in figure, 0,1 respectively indicates two ports of RI-RS, by left hand view in Fig. 5 A it is found that the of first PRB
Where the corresponding OFDM symbol #8 and #10 of one subcarrier the position RE setting non-zero power CSI-RS to send CSI-RS sequence,
The position RE setting zero energy CSI-RS where the corresponding OFDM symbol #8 and #10 of the first subcarrier in second PRB (is beaten
Hole) so that the power enhancing on the adjacent position RE for sending CSI-RS sequence, and then realize the RI- of minimum 2RE/PRB
Improve the power of RI-RS while RS expense, and through maximum known to experiment can hoisting power be 3dB, further more, with FDD system
For the frame structure configuration diagram of RI-RS two-port can be as shown in right part of flg in Fig. 5 A, the embodiment of the present invention does not repeat this.
Correspondingly, in M=1, by taking TDD system as an example, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 B
It is shown.
For another example work as N=1, when M=2, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be such as Fig. 5 C institute
Show, and through experiment it is found that the configuration mode is while the RI-RS expense for realizing minimum 2RE/PRB, by the power of RI-RS
Improve 4.7dB;Further more, the frame structure configuration diagram of the RI-RS two-port comprising multiple PRB can be as shown in Figure 5 D as M=3,
The configuration mode is while the RI-RS expense for realizing minimum 2RE/PRB, by the power ascension of RI-RS 6dB.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes to configure
The position RE of CSI-RS sequence is sent, it is specific implementable are as follows: the corresponding OFDM symbol of the n-th PRB of i-th of subframe is corresponding
Non-zero power CSI-RS is arranged in the position RE, and every the corresponding position the RE setting of the corresponding OFDM symbol of next PRB of M PRB
Zero energy CSI-RS, i+1 subframe is arranged in the corresponding position the RE symbol of the corresponding OFDM of non-zero power CSI-RS, other PRB
The corresponding OFDM symbol corresponding position RE of the N+1 PRB non-zero power CSI-RS is set, and every the next of M PRB
Non-zero power CSI-RS, the corresponding position RE the corresponding OFDM of other PRB is arranged in the corresponding position RE of the corresponding OFDM symbol of PRB
Symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol pair of remaining subframe successively next PRB after one PRB of rearward displacement
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein i,
N, M are positive integer.
For example, work as i=1, when N=1, M=2, it is assumed that the frame structure of the RI-RS comprising 3 subframes is configured that
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of first PRB of one subframe, and every 2 PRB
The corresponding OFDM symbol corresponding position RE of next PRB non-zero power CSI-RS is set, the corresponding OFDM of other PRB is corresponding
Zero energy CSI-RS is arranged in the position RE symbol, in the corresponding position RE of corresponding OFDM symbol of second PRB of second subframe
Non-zero power CSI-RS is set, and non-zero power is set every the corresponding position RE of the corresponding OFDM symbol of next PRB of 2 PRB
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of rate CSI-RS, other PRB, in the third of third subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of a PRB, and every the corresponding of next PRB of 2 PRB
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, specifically can be as shown in fig. 6, be the frame structure configuration diagram of RI-RS two-port in TDD system, wherein 0,1 point
Not Biao Shi RI-RS two ports.
Second embodiment of the present invention provides a kind of methods for obtaining channel sequence in a communications system, in the method, terminal
Receive the reference signal RI-RS for being used to measure channel sequence that base station is sent, wherein the frame structure of the RI-RS is configured to part
Zero energy CSI-RS, another part PRB answered with the part PRB pair is arranged in the corresponding position RE of the corresponding OFDM symbol of PRB
The corresponding OFDM symbol corresponding position RE non-zero power CSI-RS is set, wherein the part PRB and described another part
PRB is located in same subframe, and measures channel sequence according to the RI-RS, and will the obtained channel sequence of measurement feed back to it is described
Base station, to know corresponding channel capacity by the base station.That is, in the technical solution described in the embodiment of the present invention, base
It stands by sending the corresponding position the RE setting zero energy CSI- of corresponding OFDM symbol that frame structure is configured to part PRB to terminal
The corresponding position the RE setting non-zero power CSI-RS of corresponding OFDM symbol of RS, another part PRB answered to the part PRB pair
RI-RS, to improve the power of RI-RS while the RI-RS expense for realizing minimum 2RE/PRB, and then improve
Estimated accuracy of the RI-RS to channel sequence.
Embodiment three
The embodiment of the present invention three is being led to so that base station and terminal interaction execute as an example to described in the embodiment of the present invention one to two
The method that channel sequence is obtained in letter system is further described, as shown in figure 8, it is described in the embodiment of the present invention three logical
The flow diagram of the method for channel sequence is obtained in letter system, the method can comprise the following steps that
Step 801: base station sends the reference signal RI-RS for measuring channel sequence to terminal, wherein the RI-RS's
Frame structure is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, with the part PRB pair
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of another part PRB answered.
Wherein, the part PRB and another part PRB are located in same subframe.
Optionally, the frame structure configuration of the RI-RS can be for by the continuous intermediate PRB's of K in the whole bandwidth of RI-RS
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Optionally, the frame structure configuration of the RI-RS can also be that the corresponding OFDM symbol of first PRB is RE corresponding
Zero setting power CSI-RS is installed, and zero energy is set every the corresponding OFDM symbol of next PRB of the N number of PRB corresponding position RE
Non-zero power CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of CSI-RS, other PRB, wherein N is positive integer.
Further, for average acquisition channel sequence, frequency shift (FS) can be added between different subframes to configure
The position RE of CSI-RS sequence is sent, it is specific implementable are as follows: the corresponding OFDM symbol of the n-th PRB of i-th of subframe is corresponding
Non-zero power CSI-RS is arranged in the position RE, and every the corresponding position the RE setting of the corresponding OFDM symbol of next PRB of M PRB
Zero energy CSI-RS, i+1 subframe is arranged in the corresponding position the RE symbol of the corresponding OFDM of non-zero power CSI-RS, other PRB
The corresponding OFDM symbol corresponding position RE of the N+1 PRB non-zero power CSI-RS is set, and every the next of M PRB
Non-zero power CSI-RS, the corresponding position RE the corresponding OFDM of other PRB is arranged in the corresponding position RE of the corresponding OFDM symbol of PRB
Symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol pair of remaining subframe successively next PRB after one PRB of rearward displacement
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein i,
N, M are positive integer.
Step 802: terminal receives the RI-RS, and measures channel sequence according to the RI-RS, and measurement is obtained
Channel sequence 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, base station
The reference signal RI-RS for measuring channel sequence is sent to terminal, to be measured by the terminal according to the RI-RS received
Channel sequence, and the channel sequence that measurement obtains is fed back into the base station, wherein the frame structure of the RI-RS is configured to part PRB
The corresponding OFDM symbol corresponding position RE zero energy CSI-RS, the phase of another part PRB answered with the part PRB pair are set
Answer the corresponding position the RE setting non-zero power CSI-RS of OFDM symbol, wherein the part PRB and described another part PRB
In same subframe, and the channel sequence of the terminal feedback is received, to know corresponding channel capacity.That is, at this
In technical solution described in inventive embodiments, base station is by sending the corresponding OFDM symbol that frame structure is configured to part PRB to terminal
Zero energy CSI-RS is arranged in the corresponding position RE, and the corresponding OFDM symbol of another part PRB answered to the part PRB pair is corresponding
The position RE setting non-zero power CSI-RS RI-RS, to be mentioned while the RI-RS expense for realizing minimum 2RE/PRB
The high power of RI-RS, and then RI-RS is improved to the estimated accuracy of channel sequence.
Example IV
Based on inventive concept identical with the embodiment of the present invention one, the embodiment of the present invention four provides a kind of base station, the base
The specific implementation stood can be found in the associated description in above method embodiment one, and overlaps will not be repeated, structural schematic diagram
As shown in figure 9, the base station is main can include:
Transmission unit 91 can be used for sending the reference signal RI-RS for measuring channel sequence to terminal, by the terminal
Channel sequence is measured according to the RI-RS received, and the channel sequence that measurement obtains is fed back into the base station, wherein is described
The frame structure of RI-RS is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, with the portion
The corresponding position the RE setting non-zero power CSI-RS of the corresponding OFDM symbol for another part PRB for dividing PRB pair to answer, wherein described
Part PRB and another part PRB are located in same subframe;
Receiving unit 92 can be used 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 the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, it is based on inventive concept identical with the embodiment of the present invention two, the embodiment of the present invention four additionally provides one
Kind terminal, the specific implementation of the terminal can be found in the associated description in above method embodiment two, and overlaps will not be repeated,
Structural schematic diagram is as shown in Figure 10, and the terminal is main can include:
Receiving unit 101 can be used for receiving the reference signal RI-RS for being used to measure channel sequence of base station transmission, wherein institute
The frame structure for stating RI-RS is configured to the corresponding OFDM symbol corresponding position the RE setting zero energy CSI-RS of part PRB, and described
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol for another part PRB that part PRB pair is answered, wherein institute
It states part PRB and another part PRB is located in same subframe;
Processing unit 102 can be used for measuring channel sequence according to the RI-RS, and the channel sequence that measurement obtains fed 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 the K in the whole bandwidth by RI-RS continuous intermediate PRB's
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein K is the positive integer greater than 1.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB in each subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein N, M
For positive integer.
Further, the frame structure of the RI-RS is configured to that frequency shift (FS) is added between each subframe.
Further, the frame structure of the RI-RS is configured to the corresponding OFDM symbol pair of the n-th PRB of i-th of subframe
The position the RE setting non-zero power CSI-RS answered, and every the corresponding position RE of the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is set, and zero energy CSI-RS, i+1 is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of subframe, and every under M PRB
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of one PRB, and the corresponding OFDM of other PRB is RE corresponding
Set symbol is arranged zero energy CSI-RS, the corresponding OFDM symbol of remaining subframe successively next PRB after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE, and RE corresponding every the corresponding OFDM symbol of next PRB of M PRB
Non-zero power CSI-RS is installed, zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of other PRB, wherein
I, N, M are positive integer.
Further, it is based on inventive concept identical with the embodiment of the present invention one and two, the embodiment of the present invention four also provides
A kind of system obtaining channel sequence in a communications system, the specific implementation of the system can be found in above method embodiment one and two
In associated description, overlaps will not be repeated, and structural schematic diagram is as shown in figure 11, this obtains channel sequence in a communications system
System it is main can include:
Base station 111 can be used for sending the reference signal RI-RS for measuring channel sequence to terminal 112, wherein the RI-
The frame structure of RS is configured to the corresponding position the RE setting zero energy CSI-RS of corresponding OFDM symbol of part PRB, with the part
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol for another part PRB that PRB pair is answered, and, receive institute
The channel sequence of the feedback of terminal 112 is stated, to know corresponding channel capacity, wherein the part PRB and another part PRB
In same subframe.
Terminal 112, the RI-RS sent for receiving the base station 111, and channel sequence is measured according to the RI-RS,
And the channel sequence that measurement obtains is fed back into the base station 111.
That is, base station is configured to by sending frame structure to terminal in the technical solution described in the embodiment of the present invention
Zero energy CSI-RS, the another part answered with the part PRB pair is arranged in the corresponding position RE of the corresponding OFDM symbol of part PRB
The RI-RS of the corresponding OFDM symbol of the PRB corresponding position RE setting non-zero power CSI-RS, wherein the part PRB with it is described
Another part PRB is located in same subframe, to improve RI-RS while the RI-RS expense for realizing minimum 2RE/PRB
Power, and then improve RI-RS to the estimated accuracy of channel sequence.
It will be understood by those skilled in the art that the embodiment of the present invention can provide as method, apparatus (equipment) or computer journey
Sequence product.Therefore, complete hardware embodiment, complete software embodiment or combining software and hardware aspects can be used in the present invention
The form of embodiment.Moreover, it wherein includes the calculating of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (21)
1. a kind of method for obtaining channel sequence in a communications system characterized by comprising
Base station sends the reference signal RI-RS for measuring channel sequence to terminal, with as the terminal according to receiving
RI-RS measures channel sequence, and the channel sequence that measurement obtains is fed back to the base station, wherein the frame structure of the RI-RS configures
For the respective orthogonal frequency multiplexing technique OFDM symbol position corresponding resource unit RE of part physical resource block PRB, zero power is set
The corresponding OFDM symbol of rate channel state information reference signals CSI-RS, another part PRB answered to the part PRB pair are corresponding
The position RE non-zero power CSI-RS is set, wherein the part PRB and another part PRB are located in same subframe;
The channel sequence of the terminal feedback is received, to know corresponding channel capacity.
2. the method as described in claim 1, which is characterized in that the frame structure of the RI-RS is configured to the entire band of RI-RS
Non-zero power CSI-RS, the phase of other PRB is arranged in the corresponding position RE of corresponding OFDM symbol of K continuous intermediate PRB in width
Answer the corresponding position the RE symbol setting zero energy CSI-RS of OFDM, wherein K is the positive integer greater than 1.
3. the method as described in claim 1, which is characterized in that the frame structure of the RI-RS is configured to the N in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of a PRB, and every the corresponding of next PRB of M PRB
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, wherein N, M are positive integer.
4. such as method as claimed in any one of claims 1-3, which is characterized in that the frame structure of the RI-RS is configured in each son
Frequency shift (FS) is added between frame.
5. method as claimed in claim 4, which is characterized in that the frame structure of the RI-RS is configured to the of i-th of subframe
Non-zero power CSI-RS, and the phase of next PRB every M PRB is arranged in the corresponding position RE of the corresponding OFDM symbol of N number of PRB
The corresponding position the RE setting non-zero power CSI-RS of OFDM symbol is answered, the corresponding position the RE symbol of the corresponding OFDM of other PRB is set
Non-zero power is arranged in zero setting power CSI-RS, the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of i+1 subframe
CSI-RS, and non-zero power CSI-RS is set every the corresponding OFDM symbol of next PRB of the M PRB corresponding position RE, it is other
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of PRB, remaining subframe is successively after one PRB of rearward displacement
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of next PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein i, N, M are positive integer.
6. a kind of method for obtaining channel sequence in a communications system characterized by comprising
Terminal receives the reference signal RI-RS for being used to measure channel sequence that base station is sent, wherein the frame structure of the RI-RS is matched
It is set to the respective orthogonal frequency multiplexing technique OFDM symbol position the corresponding resource unit RE setting zero of part physical resource block PRB
Power channel state information reference signals CSI-RS, to the corresponding OFDM symbol pair for another part PRB that the part PRB pair is answered
The position the RE setting non-zero power CSI-RS answered, wherein the part PRB and another part PRB are located in same subframe;
Channel sequence is measured according to the RI-RS, and the channel sequence that measurement obtains is fed back into the base station, to be obtained by the base station
Know corresponding channel capacity.
7. method as claimed in claim 6, which is characterized in that the frame structure of the RI-RS is configured to the entire band of RI-RS
Non-zero power CSI-RS, the phase of other PRB is arranged in the corresponding position RE of corresponding OFDM symbol of K continuous intermediate PRB in width
Answer the corresponding position the RE symbol setting zero energy CSI-RS of OFDM, wherein K is the positive integer greater than 1.
8. method as claimed in claim 6, which is characterized in that the frame structure of the RI-RS is configured to the N in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of a PRB, and every the corresponding of next PRB of M PRB
Non-zero power CSI-RS, the corresponding position the RE symbol setting of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS, wherein N, M are positive integer.
9. the method as described in any in claim 6-8, which is characterized in that the frame structure of the RI-RS is configured in each son
Frequency shift (FS) is added between frame.
10. method as claimed in claim 9, which is characterized in that the frame structure of the RI-RS is configured to i-th subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of n-th PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, and non-zero power is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of i+1 subframe
Rate CSI-RS, and non-zero power CSI-RS is set every the corresponding OFDM symbol of next PRB of the M PRB corresponding position RE,
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of its PRB, remaining subframe is successively after one PRB of rearward displacement
The corresponding OFDM symbol corresponding position RE of next PRB non-zero power CSI-RS is set, and every next PRB of M PRB
The corresponding OFDM symbol corresponding position RE non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB are set
Number setting zero energy CSI-RS, wherein i, N, M are positive integer.
11. a kind of base station characterized by comprising
Transmission unit, for sending the reference signal RI-RS for measuring channel sequence to terminal, with by the terminal according to reception
The RI-RS measurement channel sequence arrived, and the channel sequence that measurement obtains is fed back into the base station, wherein the frame of the RI-RS
Structure is configured to the position respective orthogonal frequency multiplexing technique OFDM symbol corresponding resource unit RE of part physical resource block PRB
Zero power channel status information reference signal CSI-RS is set, to the corresponding OFDM for another part PRB that the part PRB pair is answered
Non-zero power CSI-RS is arranged in the corresponding position RE of symbol, wherein the part PRB and another part PRB is located at same
In subframe;
Receiving unit, for receiving the channel sequence of the terminal feedback, to know corresponding channel capacity.
12. base station as claimed in claim 11, which is characterized in that the frame structure of the RI-RS is configured to the entire of RI-RS
Non-zero power CSI-RS is arranged in the corresponding position RE of corresponding OFDM symbol of K continuous intermediate PRB in bandwidth, other PRB's
Accordingly zero energy CSI-RS is arranged in the corresponding position the RE symbol of OFDM, wherein K is the positive integer greater than 1.
13. base station as claimed in claim 11, which is characterized in that the frame structure of the RI-RS is configured to will be in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of n-th PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein N, M are positive integer.
14. the base station as described in any in claim 11-13, which is characterized in that the frame structure of the RI-RS is configured to each
Frequency shift (FS) is added between subframe.
15. base station as claimed in claim 14, which is characterized in that the frame structure of the RI-RS is configured to i-th subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of n-th PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, and non-zero power is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of i+1 subframe
Rate CSI-RS, and non-zero power CSI-RS is set every the corresponding OFDM symbol of next PRB of the M PRB corresponding position RE,
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of its PRB, remaining subframe is successively after one PRB of rearward displacement
The corresponding OFDM symbol corresponding position RE of next PRB non-zero power CSI-RS is set, and every next PRB of M PRB
The corresponding OFDM symbol corresponding position RE non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB are set
Number setting zero energy CSI-RS, wherein i, N, M are positive integer.
16. a kind of terminal characterized by comprising
Receiving unit, for receiving the reference signal RI-RS for being used to measure channel sequence of base station transmission, wherein the RI-RS's
The respective orthogonal frequency multiplexing technique OFDM symbol that frame structure is configured to part physical resource block PRB is resource unit RE corresponding
Zero power channel status information reference signal CSI-RS is installed, it is corresponding to another part PRB that the part PRB pair is answered
Non-zero power CSI-RS is arranged in the corresponding position RE of OFDM symbol, wherein the part PRB is located at another part PRB
In same subframe;
The channel sequence that measurement obtains for measuring channel sequence according to the RI-RS, and is fed back to the base station by processing unit,
To know corresponding channel capacity by the base station.
17. terminal as claimed in claim 16, which is characterized in that the frame structure of the RI-RS is configured to the entire of RI-RS
Non-zero power CSI-RS is arranged in the corresponding position RE of corresponding OFDM symbol of K continuous intermediate PRB in bandwidth, other PRB's
Accordingly zero energy CSI-RS is arranged in the corresponding position the RE symbol of OFDM, wherein K is the positive integer greater than 1.
18. terminal as claimed in claim 16, which is characterized in that the frame structure of the RI-RS is configured to will be in each subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of n-th PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, wherein N, M are positive integer.
19. the terminal as described in any in claim 16-18, which is characterized in that the frame structure of the RI-RS is configured to each
Frequency shift (FS) is added between subframe.
20. terminal as claimed in claim 19, which is characterized in that the frame structure of the RI-RS is configured to i-th subframe
Non-zero power CSI-RS is arranged in the corresponding position RE of the corresponding OFDM symbol of n-th PRB, and every next PRB's of M PRB
Accordingly non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB is arranged in the corresponding position RE of OFDM symbol
Zero energy CSI-RS is set, and non-zero power is arranged in the corresponding position RE of the corresponding OFDM symbol of the N+1 PRB of i+1 subframe
Rate CSI-RS, and non-zero power CSI-RS is set every the corresponding OFDM symbol of next PRB of the M PRB corresponding position RE,
Zero energy CSI-RS is arranged in the corresponding position the RE symbol of the corresponding OFDM of its PRB, remaining subframe is successively after one PRB of rearward displacement
The corresponding OFDM symbol corresponding position RE of next PRB non-zero power CSI-RS is set, and every next PRB of M PRB
The corresponding OFDM symbol corresponding position RE non-zero power CSI-RS, the corresponding position the RE symbol of the corresponding OFDM of other PRB are set
Number setting zero energy CSI-RS, wherein i, N, M are positive integer.
21. a kind of system for obtaining channel sequence in a communications system characterized by comprising
Base station, for sending the reference signal RI-RS for measuring channel sequence to terminal, wherein the frame structure of the RI-RS is matched
It is set to the respective orthogonal frequency multiplexing technique OFDM symbol position the corresponding resource unit RE setting zero of part physical resource block PRB
Power channel state information reference signals CSI-RS, to the corresponding OFDM symbol pair for another part PRB that the part PRB pair is answered
The position the RE setting non-zero power CSI-RS answered, and, the channel sequence of the terminal feedback is received, to know that corresponding channel holds
Amount, wherein the part PRB and another part PRB are located in same subframe;
Terminal, the RI-RS sent for receiving the base station, and channel sequence is measured according to the RI-RS, and, it will survey
The channel sequence measured feeds back to the base station.
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CN103503332A (en) * | 2011-05-04 | 2014-01-08 | Lg电子株式会社 | Method and device for transmitting/receiving channel state information in a wireless communication system |
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