CN109150428A - A kind of method for transmitting signals, device and base station - Google Patents
A kind of method for transmitting signals, device and base station Download PDFInfo
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- CN109150428A CN109150428A CN201710453980.4A CN201710453980A CN109150428A CN 109150428 A CN109150428 A CN 109150428A CN 201710453980 A CN201710453980 A CN 201710453980A CN 109150428 A CN109150428 A CN 109150428A
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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Abstract
The present invention provides a kind of method for transmitting signals, device and base station, the mapping and transmission problem in current NR system for the CSI-RS of beam scanning are solved.Method for transmitting signals of the invention includes: by the way of frequency division multiplexing or code division multiplexing, at least one channel state information reference signals CSI-RS for being used for beam scanning is mapped to multiple subcarriers of scheduled transmission bandwidth, and it is sent to mobile terminal, wherein, multiple subcarriers correspond to same time quantum.The present invention is by the way of frequency division multiplexing or code division multiplexing, at least one channel state information reference signals CSI-RS for being used for beam scanning is mapped to multiple subcarriers of scheduled transmission bandwidth, and it is sent to mobile terminal, realize the mapping and transmission of the CSI-RS for beam scanning.
Description
Technical field
The present invention relates to the technical field of communications applications more particularly to a kind of method for transmitting signals, device and base station.
Background technique
Support that sending channel state information reference signals CSI-RS pilot signal carries out wave in NR system of newly eating dishes without rice or wine
Beam scanning.The process of this beam scanning can be used for the transmission beam direction that receiving end determines transmitting terminal, can be used for receiving
End determines the direction for receiving wave beam.Fig. 1 gives a kind of for sending and receiving the hair of the CSI-RS pilot signal of beam scanning
Pass through journey.Assuming that sharing A transmission beam direction.The CSI-RS of a beam direction is sent in figure in each time quantum, and
The CSI-RS that transmission same beam direction is repeated in multiple adjacent time quantums, sends wave beam in this way convenient for receiving end herein
Side switches up different reception beam directions, so that it is determined that this sends the corresponding optimal reception beam direction of beam direction.
In subsequent several adjacent time intervals, repetition sends the CSI-RS of another beam direction, and receiving end equally determines this hair
Send beam direction corresponding optimum reception beam direction.Successively traverse all transmission beam directions, it can determine each transmission
The optimum reception beam direction of beam direction.Beam direction is sent by traversal simultaneously, can determine optimal transmission wave beam side
To with optimal reception beam direction.
Fig. 2 gives a kind of transmission process of CSI-RS pilot signal for being only used for sending beam scanning.Assuming that shared A
Send beam direction.Send the CSI-RS of a beam direction in figure respectively in each time interval, and between the adjacent time
Different every the beam direction of transmission, such A transmission beam direction is sent in A time quantum.Receiving end is in this A
It is measured in a time quantum using identical reception wave beam, obtains optimal transmission wave beam corresponding with this reception wave beam.
Further, since the antenna for sending and receiving side may have multiple panels (Panel), each panel can independently be sent out
A beam direction is sent or received, therefore in fig. 1 and 2, in each time quantum, multiple wave beam sides can also be sent simultaneously
To CSI-RS.
At present in NR system, the above process that beam scanning is carried out using CSI-RS pilot tone is only defined.But every
The mapping and transmission that CSI-RS how is carried out in a time quantum do not have corresponding scheme.
Summary of the invention
The purpose of the present invention is to provide a kind of method for transmitting signals, device and base stations, to solve in current NR system
The mapping of CSI-RS for beam scanning and transmission problem.
To achieve the goals above, the present invention provides a kind of method for transmitting signals, are applied to base station, comprising:
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information for being used for beam scanning is referred to
Signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple sub- loads
Wave corresponds to same time quantum.
Wherein, each CSI-RS includes at least one antenna port, at least one antenna of each CSI-RS
It is frequency division multiplexing or code division multiplexing between port, and is frequency between the antenna port in difference CSI-RS with identical port numbering
Divide multiplexing or code division multiplexing.
Wherein, by the way of frequency division multiplexing or code division multiplexing, at least one channel status for being used for beam scanning is believed
Ceasing the step that reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth includes:
By the way of frequency division multiplexing, by the L1 of the antenna terminal mapping of target CSI-RS to the scheduled transmission bandwidth
On subcarrier, wherein the target CSI-RS is the CSI-RS in N number of CSI-RS with most antenna ports,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the antenna end of the target CSI-RS
Mouth number, by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive whole D-1
Number；
By the way of code division multiplexing, by each CSI-RS in N number of CSI-RS in addition to the target CSI-RS
Each antenna port, be mapped in target CSI-RS with the antenna port have identical port numbering antenna port where
On subcarrier.
Wherein, by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to the scheduled transmission bandwidth
L1 subcarrier on step include:
Pass through formula s0+ (i-1) × D+ (L-1) × Mmax× D determines that i-th of antenna port is corresponding in target CSI-RS
Frequency domain position of the subcarrier in the scheduled transmission bandwidth；
Wherein, s0 indicates the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, the value range of s0 >=0, L is [1, L1], and L is positive integer.
Wherein, the antenna port of port numbering having the same uses mutually orthogonal sequence in the different CSI-RS
Column.
Wherein, by the way of frequency division multiplexing or code division multiplexing, at least one channel status for being used for beam scanning is believed
Ceasing the step that reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth includes:
By the way of frequency division multiplexing, by MsumEach antenna port in a antenna port, is mapped to the scheduled transmission
On L2 subcarrier of bandwidth,S is the sub-carrier number that the scheduled transmission bandwidth includes, MsumIt is N number of
The total quantity of antenna port included by the CSI-RS, D-1 is between adjacent antenna port in the scheduled transmission bandwidth between institute
Every subcarrier number, D, N are positive integer.
Wherein, by the way of frequency division multiplexing, by MsumEach antenna port in a antenna port is mapped to described pre-
The step determined on L2 subcarrier of transmission bandwidth includes:
Pass through formulaDetermine each day of each CSI-RS
Frequency domain position of the corresponding subcarrier of line end mouth in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Interior frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with
The number of the CSI-RS of antenna port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
Wherein, by the way of frequency division multiplexing or code division multiplexing, at least one channel status for being used for beam scanning is believed
Ceasing the step that reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth includes:
By the way of code division multiplexing, each antenna port of each CSI-RS in N number of CSI-RS is reflected respectively
It is incident upon on L3 subcarrier,S is the sub-carrier number that the scheduled transmission bandwidth includes, and D-1 is the scheduled transmission
The number for the subcarrier being spaced between adjacent antenna port in bandwidth, D, N are positive integer.
Wherein, by the way of code division multiplexing, by each antenna port of each CSI-RS in N number of CSI-RS point
The step not mapped on L3 subcarrier includes:
Determine the corresponding subcarrier of each antenna port of each CSI-RS described predetermined by formula s2+ (L-1) × D
Frequency domain position in transmission bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission band
Frequency domain initial position in width, s2 >=0, L are positive integer, and the value range of L is [1, L3].
Wherein, each antenna port of each CSI-RS uses mutually orthogonal sequence.
The embodiments of the present invention also provide a kind of signal transmitting apparatus, are applied to base station, comprising:
Transmission module, at least one letter of beam scanning will to be used for by the way of frequency division multiplexing or code division multiplexing
Channel state information reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal,
In, multiple subcarriers correspond to same time quantum.
Wherein, each CSI-RS includes at least one antenna port, at least one antenna of each CSI-RS
It is frequency division multiplexing or code division multiplexing between port, and is frequency between the antenna port in difference CSI-RS with identical port numbering
Divide multiplexing or code division multiplexing.
Wherein, the transmission module includes:
First mapping submodule, for by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to institute
It states on L1 subcarrier of scheduled transmission bandwidth, wherein the target CSI-RS is to have most antennas in N number of CSI-RS
The CSI-RS of port,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the target
The antenna port number of CSI-RS, D-1 is by for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth
Number, D, N are positive integer；
Second mapping submodule, for the target CSI- will to be removed in N number of CSI-RS by the way of code division multiplexing
Each antenna port of each CSI-RS except RS is mapped in target CSI-RS and compiles with the antenna port with identical port
Number antenna port where subcarrier on.
Wherein, first mapping submodule is used to pass through formula s0+ (i-1) × D+ (L-1) × Mmax× D, determines target
Frequency domain position of the corresponding subcarrier of i-th of antenna port in the scheduled transmission bandwidth in CSI-RS；
Wherein, s0 indicates the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, the value range of s0 >=0, L is [1, L1], and L is positive integer.
Wherein, the antenna port of port numbering having the same uses mutually orthogonal sequence in the different CSI-RS
Column.
Wherein, the transmission module includes:
Third mapping submodule, for by the way of frequency division multiplexing, by MsumEach antenna end in a antenna port
Mouthful, it is mapped on L2 subcarrier of the scheduled transmission bandwidth,S is the scheduled transmission bandwidth packet
The sub-carrier number contained, MsumFor the total quantity of antenna port included by N number of CSI-RS, D-1 is in the scheduled transmission bandwidth
The number for the subcarrier being spaced between adjacent antenna port, D, N are positive integer.
Wherein, third mapping submodule is for passing through formula
Determine frequency domain position of the corresponding subcarrier of each antenna port of each CSI-RS in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Interior frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with
The number of the CSI-RS of antenna port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
Wherein, the transmission module includes:
4th mapping submodule, for by the way of code division multiplexing, by each CSI-RS's in N number of CSI-RS
Each antenna port is respectively mapped on L3 subcarrier,S is the subcarrier that the scheduled transmission bandwidth includes
Number, for D-1 by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive integer.
Wherein, the 4th mapping submodule is used to determine each day of each CSI-RS by formula s2+ (L-1) × D
Frequency domain position of the corresponding subcarrier of line end mouth in the scheduled transmission bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission band
Frequency domain initial position in width, s2 >=0, L are positive integer, and the value range of L is [1, L3].
Wherein, each antenna port of each CSI-RS uses mutually orthogonal sequence.
The embodiments of the present invention also provide a kind of base station, including memory, transceiver, processor and it is stored in memory
Computer program that is upper and can running on a processor, the processor perform the steps of when executing the computer program
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information for being used for beam scanning is referred to
Signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal by transceiver, wherein more
A subcarrier corresponds to same time quantum.
The embodiments of the present invention also provide a kind of computer readable storage mediums, are stored thereon with computer program, should
It is performed the steps of when computer program is executed by processor
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information for being used for beam scanning is referred to
Signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple sub- loads
Wave corresponds to same time quantum.
The embodiment of the present invention has the advantages that
The above-mentioned technical proposal of the embodiment of the present invention will be used for wave beam and be swept by the way of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS retouched is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent
To mobile terminal, the mapping and transmission of the CSI-RS for beam scanning are realized.
Detailed description of the invention
Fig. 1 is the first transmission schematic diagram for being used for the CSI-RS of beam scanning in the prior art；
Fig. 2 is the second transmission schematic diagram for being used for the CSI-RS of beam scanning in the prior art；
Fig. 3 is the first work flow diagram of the method for transmitting signals of the embodiment of the present invention；
The first mapping schematic diagram that Fig. 4 is CSI-RS in the method for transmitting signals of the embodiment of the present invention；
The second mapping schematic diagram that Fig. 5 is CSI-RS in the method for transmitting signals of the embodiment of the present invention；
The third that Fig. 6 is CSI-RS in the method for transmitting signals of the embodiment of the present invention maps schematic diagram；
Fig. 7 is the first structure block diagram of the base station of the embodiment of the present invention；
Fig. 8 is the second structural block diagram of the base station of the embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation
Example and attached drawing are described in detail.
The embodiment provides a kind of method for transmitting signals, device, base station and computer readable storage medium, solutions
Mapping and transmission problem in current NR system of having determined for the CSI-RS of beam scanning.
In some embodiments of the invention, referring to shown in Fig. 3, a kind of method for transmitting signals is provided, is applied to base station,
Include:
Step 301: by the way of frequency division multiplexing or code division multiplexing, at least one channel status of beam scanning will be used for
Information reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple
The subcarrier corresponds to same time quantum.
Here scheduled transmission bandwidth is one section of continuous bandwidth in system bandwidth, can be whole system bandwidths, by base
The part system bandwidth that end configures of standing or the bandwidth by the predefined fixed frequency domain position of system.Above-mentioned time quantum can have
Body is pre-defined or configuration the unit comprising D1 orthogonal frequency division multiplex OFDM symbol, and it is single to be also possible to D2 sub- times
Position, less than one OFDM symbol of the sub- chronomere, wherein D1, D2 are the integer more than or equal to 1.
It should be noted that a CSI-RS being previously mentioned in the embodiment of the present invention each means a CSI-RS resource.
In the embodiment of the present invention, each CSI-RS includes at least one antenna port, and each CSI-RS is extremely
It is frequency division multiplexing or code division multiplexing between a few antenna port, and with the antenna end of identical port numbering in difference CSI-RS
It is frequency division multiplexing or code division multiplexing between mouthful.
The method for transmitting signals of the embodiment of the present invention will be used for wave beam and be swept by the way of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS retouched is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent
To mobile terminal, the mapping and transmission of the CSI-RS for beam scanning are realized.
As a kind of optional implementation, above-mentioned steps 301 include:
Step 3011: by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to the scheduled transmission
On L1 subcarrier of bandwidth, wherein the target CSI-RS is the CSI- in N number of CSI-RS with most antenna ports
RS,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the antenna of the target CSI-RS
Port number, by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D's D-1, N are positive
Integer；
Step 3012:, will be every in addition to the target CSI-RS in N number of CSI-RS by the way of code division multiplexing
Each antenna port of a CSI-RS, being mapped in target CSI-RS has the antenna end of identical port numbering with the antenna port
On subcarrier where mouthful.
Here, the antenna port of port numbering having the same uses mutually orthogonal sequence in the different CSI-RS
Column.
Further, above-mentioned steps 3011 specifically include: passing through formula s0+ (i-1) × D+ (L-1) × Mmax× D is determined
Frequency domain position of the corresponding subcarrier of i-th of antenna port in the scheduled transmission bandwidth in target CSI-RS；
Wherein, s0 indicates the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, the value range of s0 >=0, L is [1, L1], and L is positive integer.
Here, first the CSI-RS in N number of CSI-RS with most antenna ports is reflected by the way of frequency division multiplexing
It penetrates, then further according to the antenna port position of the CSI-RS with most antenna ports, resource is carried out to remaining N-1 CSI-RS
Mapping.In addition, in the scheduled transmission bandwidth comprising S subcarrier, other than the subcarrier of above CSI-RS mapping, minor
Carrier position does not map transmission signal.
One concrete application of the implementation is described as follows.
It is assumed that the subcarrier number S=32 for including in the scheduled transmission bandwidth of CSI-RS, transmits 4 CSI-RS, wherein the
1-3 CSI-RS resource all has 2 antenna ports, and the 4th CSI-RS has 1 antenna port, and between hypothesis antenna port
The subcarrier number at interval is 1, then D=2.By above-mentioned implementation it is found that Mmax=2, each antenna terminal mapping to L1=8
On a subcarrier, as shown in Figure 4.
For first CSI-RS, frequency domain of the corresponding subcarrier of first antenna port in scheduled transmission bandwidth is risen
Beginning position s0=0, the CSI-RS of a port (port 0) be mapped in subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12,
On subcarrier 16, subcarrier 20, subcarrier 24 and subcarrier 28；The CSI-RS of second port (port 1) is mapped in subcarrier
2, on subcarrier 6, subcarrier 10, subcarrier 14, subcarrier 18, subcarrier 22, subcarrier 26 and subcarrier 30.
For second CSI-RS and third CSI-RS, the position of the port 0 of the position of port 0 and first CSI-RS
Overlapping is set, for second and third CSI-RS, the position of port 1 is Chong Die with the position of port 1 of first CSI-RS.
For the 4th CSI-RS, the position of port 0 is Chong Die with the position of port 0 of first CSI-RS.
First CSI-RS in Fig. 4, second CSI-RS, third CSI-RS and the 4th CSI-RS port 0 distinguish
Use mutually orthogonal sequence.A kind of selection can generate different mutually orthogonal ZC sequences according to the ID of CSI-RS, or by
The same ZC sequence carries out different cyclic shifts according to the ID of resource.Similar, the first CSI-RS, the 2nd CSI-RS and third
The port 1 of CSI-RS also uses mutually orthogonal sequence respectively.
As another optional implementation, above-mentioned steps 301 include:
Step 3013: by the way of frequency division multiplexing, by MsumEach antenna port in a antenna port, is mapped to institute
It states on L2 subcarrier of scheduled transmission bandwidth,S is the subcarrier that the scheduled transmission bandwidth includes
Number, MsumFor the total quantity of antenna port included by N number of CSI-RS, D-1 is adjacent antenna end in the scheduled transmission bandwidth
The number for the subcarrier being spaced between mouthful, D, N are positive integer.
Specifically, passing through formulaDetermine each CSI-RS
Frequency domain position of the corresponding subcarrier of each antenna port in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Interior frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with
The number of the CSI-RS of antenna port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
It is illustrated below.
Assuming that the subcarrier number S=28 for including in scheduled transmission bandwidth, transmits 4 CSI-RS, wherein 1-3
CSI-RS all has 2 antenna ports (port numbering is respectively 0,1), and there is the 4th CSI-RS 1 antenna port (to compile port
Number for 0).Assuming that the subcarrier number being spaced between antenna port is 1, then D=2, Msum=7, by the above formula, each
In antenna terminal mapping to L2=2 subcarrier.
As shown in figure 5, the number of the CSI-RS with port 0 is 4, the number of the CSI-RS with port 1 is 3,
At this time in 4 CSI-RS with port 0, (its corresponding subcarrier of first antenna port is described pre- by first CSI-RS
Determine the frequency domain initial position s1=0 in transmission bandwidth) port 0 be mapped on subcarrier 0 and subcarrier 14；Second CSI-RS
Port 0 be mapped on subcarrier 2 and subcarrier 16；The port 0 of third CSI-RS is mapped in subcarrier 4 and subcarrier 18
On；The port 0 of 4th CSI-RS is mapped on subcarrier 6 and subcarrier 20；In 3 CSI-RS with port 1, first
The port 1 of CSI-RS is mapped on subcarrier 8 and subcarrier 22；The port 1 of second CSI-RS is mapped in subcarrier 10 and son
On carrier wave 24；The port 1 of third CSI-RS is mapped on subcarrier 12 and subcarrier 26.
It is orthogonal since each port of each resource is frequency division multiplexing, therefore the CSI-RS of different port can
To use the sequence of any generation, without requiring orthogonal sequence.
As another optional implementation, above-mentioned steps 301 include:
Step 3014: by the way of code division multiplexing, by each antenna end of each CSI-RS in N number of CSI-RS
Mouth is respectively mapped on L3 subcarrier,S is the sub-carrier number that the scheduled transmission bandwidth includes, and D-1 is described
The number for the subcarrier being spaced between adjacent antenna port in scheduled transmission bandwidth, D, N are positive integer.
Determine the corresponding subcarrier of each antenna port of each CSI-RS described predetermined by formula s2+ (L-1) × D
Frequency domain position in transmission bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission band
Frequency domain initial position in width, s2 >=0, L are positive integer, and the value range of L is [1, L3].
Each antenna port of each CSI-RS uses mutually orthogonal sequence.
Here, each antenna port in each CSI-RS uses mutually orthogonal sequence, to guarantee same CSI-RS
The different port of resource is mutually orthogonal, and also mutually orthogonal between the port of different CSI-RS resource.
It is illustrated below.
It is assumed that the subcarrier number S=32 for including in CSI-RS transmission bandwidth.2 CSI-RS are transmitted, each CSI-RS is equal
With 2 antenna ports.Assuming that the subcarrier number being spaced between antenna port is 1, then D=2.As shown from the above formula, each
In antenna terminal mapping to L3=16 subcarrier, as shown in Figure 6.Assuming that each antenna port of s0=0, each CSI-RS are equal
It is mapped in subcarrier 0, subcarrier 2, subcarrier 4, subcarrier 6, subcarrier 8 ..., on subcarrier 30.
Since each antenna port of each CSI-RS is overlapped, each antenna port is needed using mutually orthogonal sequence
Column.A kind of selection can generate two groups of different mutually orthogonal ZC sequences according to the ID of CSI-RS and realize between CSI-RS just
It hands over, if first CSI-RS uses one group of ZC sequence in Fig. 6, second CSI-RS uses another group of ZC sequence, this two groups of sequences
It is mutually orthogonal；Different cyclic shifts are carried out in the sequence corresponding to a CSI-RS further according to port numbering to realize between port
Orthogonal, the cyclic shift such as port 0 without sequence, port 1 carry out sequence cyclic shift.
The information transferring method of the embodiment of the present invention will be used for wave beam and be swept by the way of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS retouched is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent
To mobile terminal, the mapping and transmission of the CSI-RS for beam scanning are realized.
As shown in fig. 7, being applied to base station 700 the embodiments of the present invention also provide a kind of signal transmitting apparatus, comprising:
Transmission module 701, for by the way of frequency division multiplexing or code division multiplexing, by be used for beam scanning at least one
Channel state information reference signals CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal,
Wherein, multiple subcarriers correspond to same time quantum.
The signal transmitting apparatus of the embodiment of the present invention, each CSI-RS include at least one antenna port, Mei Gesuo
Stating is frequency division multiplexing or code division multiplexing between at least one antenna port of CSI-RS, and has identical port in difference CSI-RS
It is frequency division multiplexing or code division multiplexing between the antenna port of number.
The signal transmitting apparatus of the embodiment of the present invention, the transmission module 701 include:
First mapping submodule, for by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to institute
It states on L1 subcarrier of scheduled transmission bandwidth, wherein the target CSI-RS is to have most antennas in N number of CSI-RS
The CSI-RS of port,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the target
The antenna port number of CSI-RS, D-1 is by for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth
Number, D, N are positive integer；
Second mapping submodule, for the target CSI- will to be removed in N number of CSI-RS by the way of code division multiplexing
Each antenna port of each CSI-RS except RS is mapped in target CSI-RS and compiles with the antenna port with identical port
Number antenna port where subcarrier on.
The signal transmitting apparatus of the embodiment of the present invention, first mapping submodule are used to pass through formula s0+ (i-1) × D+
(L-1)×Mmax× D determines that the corresponding subcarrier of i-th of antenna port is in the scheduled transmission bandwidth in target CSI-RS
Frequency domain position；
Wherein, s0 indicates the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, the value range of s0 >=0, L is [1, L1], and L is positive integer.
The signal transmitting apparatus of the embodiment of the present invention, the antenna of port numbering having the same in the different CSI-RS
Port uses mutually orthogonal sequence.
The signal transmitting apparatus of the embodiment of the present invention, the transmission module 701 include:
Third mapping submodule, for by the way of frequency division multiplexing, by MsumEach antenna end in a antenna port
Mouthful, it is mapped on L2 subcarrier of the scheduled transmission bandwidth,S is the scheduled transmission bandwidth packet
The sub-carrier number contained, MsumFor the total quantity of antenna port included by N number of CSI-RS, D-1 is in the scheduled transmission bandwidth
The number for the subcarrier being spaced between adjacent antenna port, D, N are positive integer.
The signal transmitting apparatus of the embodiment of the present invention, third mapping submodule is for passing through formulaDetermine the corresponding sub- load of each antenna port of each CSI-RS
Frequency domain position of the wave in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Interior frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with
The number of the CSI-RS of antenna port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
The signal transmitting apparatus of the embodiment of the present invention, the transmission module include:
4th mapping submodule, for by the way of code division multiplexing, by each CSI-RS's in N number of CSI-RS
Each antenna port is respectively mapped on L3 subcarrier,S is the subcarrier that the scheduled transmission bandwidth includes
Number, for D-1 by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive integer.
The signal transmitting apparatus of the embodiment of the present invention, the 4th mapping submodule are used to pass through formula s2+ (L-1) × D
Determine frequency domain position of the corresponding subcarrier of each antenna port of each CSI-RS in the scheduled transmission bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission band
Frequency domain initial position in width, s2 >=0, L are positive integer, and the value range of L is [1, L3].
Each antenna port of the signal transmitting apparatus of the embodiment of the present invention, each CSI-RS uses mutually orthogonal sequence
Column.
The signal transmitting apparatus of the embodiment of the present invention will be used for wave beam and be swept by the way of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS retouched is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent
To mobile terminal, the mapping and transmission of the CSI-RS for beam scanning are realized.
It should be noted that the signal transmitting apparatus is device corresponding with above-mentioned method for transmitting signals, wherein above-mentioned
All implementations can also reach same technical effect suitable for the embodiment of the device in embodiment of the method.
In some embodiments of the invention, as shown in figure 8, additionally providing a kind of base station, including memory 820, processing
Device 800, transceiver 810, bus interface and it is stored in the computer program that can be run on memory 820 and on processor 800,
The processor 800 is used to read the program in memory 820, executes following process:
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information for being used for beam scanning is referred to
Signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal by transceiver 810,
In, multiple subcarriers correspond to same time quantum.
Wherein, in fig. 8, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 800
The various circuits for the memory that the one or more processors and memory 820 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 810 can
To be multiple element, that is, includes transmitter and transceiver, the list for communicating over a transmission medium with various other devices is provided
Member.Processor 800, which is responsible for management bus architecture and common processing, memory 820, can store processor 800 and is executing operation
When used data.
Optionally, each CSI-RS includes at least one antenna port, at least one day of each CSI-RS
It is frequency division multiplexing or code division multiplexing between line end mouth, and is between the antenna port in difference CSI-RS with identical port numbering
Frequency division multiplexing or code division multiplexing.
Processor 800 is also used to: by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to described pre-
Determine on L1 subcarrier of transmission bandwidth, wherein the target CSI-RS is to have most antenna ports in N number of CSI-RS
CSI-RS,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the target CSI-RS
Antenna port number, D-1 is by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N
It is positive integer；
By the way of code division multiplexing, by each CSI-RS in N number of CSI-RS in addition to the target CSI-RS
Each antenna port, be mapped in target CSI-RS with the antenna port have identical port numbering antenna port where
On subcarrier.
Processor 800 is also used to: passing through formula s0+ (i-1) × D+ (L-1) × Mmax× D is determined i-th in target CSI-RS
Frequency domain position of the corresponding subcarrier of a antenna port in the scheduled transmission bandwidth；
Wherein, s0 indicates the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, the value range of s0 >=0, L is [1, L1], and L is positive integer.
Optionally, the antenna port of port numbering having the same uses mutually orthogonal sequence in the different CSI-RS
Column.
Processor 800 is also used to: by the way of frequency division multiplexing, by MsumEach antenna port in a antenna port, reflects
It is mapped on L2 subcarrier of the scheduled transmission bandwidth,S is the son that the scheduled transmission bandwidth includes
Carrier number, MsumFor the total quantity of antenna port included by N number of CSI-RS, D-1 is adjacent day in the scheduled transmission bandwidth
The number for the subcarrier being spaced between line end mouth, D, N are positive integer.
Processor 800 is also used to: passing through formulaIt determines every
Frequency domain position of the corresponding subcarrier of each antenna port of a CSI-RS in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Interior frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with
The number of the CSI-RS of antenna port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
Processor 800 is also used to: by the way of code division multiplexing, by the every of each CSI-RS in N number of CSI-RS
A antenna port is respectively mapped on L3 subcarrier,S is the sub-carrier number that the scheduled transmission bandwidth includes,
For D-1 by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive integer.
Processor 800 is also used to: determining that each antenna port of each CSI-RS is corresponding by formula s2+ (L-1) × D
Frequency domain position of the subcarrier in the scheduled transmission bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission band
Frequency domain initial position in width, s2 >=0, L are positive integer, and the value range of L is [1, L3].
Optionally, each antenna port of each CSI-RS uses mutually orthogonal sequence.
In some embodiments of the invention, a kind of computer readable storage medium is additionally provided, calculating is stored thereon with
Machine program, the program perform the steps of when being executed by processor
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information for being used for beam scanning is referred to
Signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple sub- loads
Wave corresponds to same time quantum.
The program is able to achieve all implementations in above method embodiment when being executed by processor, no longer superfluous herein
It states.
In various embodiments of the present invention, it should be appreciated that magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (22)
1. a kind of method for transmitting signals is applied to base station characterized by comprising
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information reference signals of beam scanning will be used for
CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple subcarriers pair
Answer same time quantum.
2. method for transmitting signals according to claim 1, which is characterized in that each CSI-RS includes at least one day
Line end mouth, is frequency division multiplexing or code division multiplexing between at least one antenna port of each CSI-RS, and difference CSI-RS
In with identical port numbering antenna port between be frequency division multiplexing or code division multiplexing.
3. method for transmitting signals according to claim 1, which is characterized in that using the side of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS for being used for beam scanning is mapped to the multiple of scheduled transmission bandwidth by formula
Step on subcarrier includes:
By the way of frequency division multiplexing, L1 son of the antenna terminal mapping of target CSI-RS to the scheduled transmission bandwidth is carried
On wave, wherein the target CSI-RS is the CSI-RS in N number of CSI-RS with most antenna ports,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the antenna end of the target CSI-RS
Mouth number, by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive whole D-1
Number；
By the way of code division multiplexing, by the every of each CSI-RS in N number of CSI-RS in addition to the target CSI-RS
A antenna port, the son where being mapped in target CSI-RS the antenna port with the antenna port with identical port numbering carry
On wave.
4. method for transmitting signals according to claim 3, which is characterized in that by the way of frequency division multiplexing, by target
Step in the antenna terminal mapping of CSI-RS to L1 subcarrier of the scheduled transmission bandwidth includes:
Pass through formula s0+ (i-1) × D+ (L-1) × Mmax× D determines the corresponding sub- load of i-th of antenna port in target CSI-RS
Frequency domain position of the wave in the scheduled transmission bandwidth；
Wherein, s0 indicates frequency of the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Domain initial position, the value range of s0 >=0, L are [1, L1], and L is positive integer.
5. method for transmitting signals according to claim 3, which is characterized in that having the same in the different CSI-RS
The antenna port of port numbering uses mutually orthogonal sequence.
6. method for transmitting signals according to claim 1, which is characterized in that using the side of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS for being used for beam scanning is mapped to the multiple of scheduled transmission bandwidth by formula
Step on subcarrier includes:
By the way of frequency division multiplexing, by MsumEach antenna port in a antenna port is mapped to the scheduled transmission bandwidth
L2 subcarrier on,S is the sub-carrier number that the scheduled transmission bandwidth includes, MsumIt is N number of described
The total quantity of antenna port included by CSI-RS is spaced in the D-1 scheduled transmission bandwidth between adjacent antenna port
The number of subcarrier, D, N are positive integer.
7. method for transmitting signals according to claim 6, which is characterized in that by the way of frequency division multiplexing, by MsumA day
Each antenna port in line end mouth, the step being mapped on L2 subcarrier of the scheduled transmission bandwidth include:
Pass through formulaDetermine each antenna end of each CSI-RS
Frequency domain position of the corresponding subcarrier of mouth in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with antenna
The number of the CSI-RS of port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
8. method for transmitting signals according to claim 1, which is characterized in that using the side of frequency division multiplexing or code division multiplexing
At least one channel state information reference signals CSI-RS for being used for beam scanning is mapped to the multiple of scheduled transmission bandwidth by formula
Step on subcarrier includes:
By the way of code division multiplexing, each antenna port of each CSI-RS in N number of CSI-RS is respectively mapped to
On L3 subcarrier,S is the sub-carrier number that the scheduled transmission bandwidth includes, and D-1 is the scheduled transmission bandwidth
The number for the subcarrier being spaced between interior adjacent antenna port, D, N are positive integer.
9. method for transmitting signals according to claim 8, which is characterized in that, will be N number of described by the way of code division multiplexing
The step that each antenna port of each CSI-RS in CSI-RS is respectively mapped on L3 subcarrier includes:
Determine the corresponding subcarrier of each antenna port of each CSI-RS in the scheduled transmission by formula s2+ (L-1) × D
Frequency domain position in bandwidth；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, s2 >=0, L are positive integer, and the value range of L is [1, L3].
10. method for transmitting signals according to claim 8, which is characterized in that each antenna port of each CSI-RS is equal
Use mutually orthogonal sequence.
11. a kind of signal transmitting apparatus is applied to base station characterized by comprising
Transmission module, at least one channel shape of beam scanning will to be used for by the way of frequency division multiplexing or code division multiplexing
State information reference signal CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein more
A subcarrier corresponds to same time quantum.
12. signal transmitting apparatus according to claim 11, which is characterized in that each CSI-RS includes at least one
Antenna port, is frequency division multiplexing or code division multiplexing between at least one antenna port of each CSI-RS, and difference CSI-
It is frequency division multiplexing or code division multiplexing between antenna port in RS with identical port numbering.
13. signal transmitting apparatus according to claim 11, which is characterized in that the transmission module includes:
First mapping submodule, for by the way of frequency division multiplexing, by the antenna terminal mapping of target CSI-RS to described pre-
Determine on L1 subcarrier of transmission bandwidth, wherein the target CSI-RS is to have most antenna ports in N number of CSI-RS
CSI-RS,S is the sub-carrier number that the scheduled transmission bandwidth includes, MmaxFor the target CSI-RS
Antenna port number, D-1 is by the number for the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N
It is positive integer；
Second mapping submodule, for by the way of code division multiplexing, will in N number of CSI-RS except the target CSI-RS it
Each antenna port of outer each CSI-RS, being mapped in target CSI-RS has identical port numbering with the antenna port
On subcarrier where antenna port.
14. signal transmitting apparatus according to claim 13, which is characterized in that first mapping submodule is for passing through
Formula s0+ (i-1) × D+ (L-1) × Mmax× D determines that the corresponding subcarrier of i-th of antenna port is described in target CSI-RS
Frequency domain position in scheduled transmission bandwidth；
Wherein, s0 indicates frequency of the corresponding subcarrier of first antenna port of target CSI-RS in the scheduled transmission bandwidth
Domain initial position, the value range of s0 >=0, L are [1, L1], and L is positive integer.
15. signal transmitting apparatus according to claim 13, which is characterized in that have in the different CSI-RS identical
Port numbering antenna port use mutually orthogonal sequence.
16. signal transmitting apparatus according to claim 11, which is characterized in that the transmission module includes:
Third mapping submodule, for by the way of frequency division multiplexing, by MsumEach antenna port in a antenna port, reflects
It is mapped on L2 subcarrier of the scheduled transmission bandwidth,S is the son that the scheduled transmission bandwidth includes
Carrier number, MsumFor the total quantity of antenna port included by N number of CSI-RS, D-1 is adjacent day in the scheduled transmission bandwidth
The number for the subcarrier being spaced between line end mouth, D, N are positive integer.
17. signal transmitting apparatus according to claim 16, which is characterized in that third mapping submodule is for passing through formulaDetermine the corresponding sub- load of each antenna port of each CSI-RS
Frequency domain position of the wave in the scheduled transmission bandwidth；
Wherein, s1 indicates the corresponding subcarrier of first antenna port of first CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, port numbering of the i for antenna port, s1 >=0,0≤r≤i, and i and r are integer, NiFor with antenna
The number of the CSI-RS of port i, 1≤j≤Ni, L is positive integer, and the value range of L is [1, L2].
18. signal transmitting apparatus according to claim 11, which is characterized in that the transmission module includes:
4th mapping submodule, for by the way of code division multiplexing, by each of each CSI-RS in N number of CSI-RS
Antenna port is respectively mapped on L3 subcarrier,S is the sub-carrier number that the scheduled transmission bandwidth includes, D-1
Number by the subcarrier being spaced between adjacent antenna port in the scheduled transmission bandwidth, D, N are positive integer.
19. signal transmitting apparatus according to claim 18, which is characterized in that the 4th mapping submodule is for passing through
Formula s2+ (L-1) × D determines the corresponding subcarrier of each antenna port of each CSI-RS in the scheduled transmission bandwidth
Frequency domain position；
Wherein, s2 indicates the corresponding subcarrier of first antenna port of each CSI-RS in the scheduled transmission bandwidth
Frequency domain initial position, s2 >=0, L are positive integer, and the value range of L is [1, L3].
20. signal transmitting apparatus according to claim 18, which is characterized in that each antenna port of each CSI-RS is equal
Use mutually orthogonal sequence.
21. a kind of base station, can run on a memory and on a processor including memory, transceiver, processor and storage
Computer program, which is characterized in that the processor performs the steps of when executing the computer program
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information reference signals of beam scanning will be used for
CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal by transceiver, wherein Duo Gesuo
It states subcarrier and corresponds to same time quantum.
22. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
Processor performs the steps of when executing
By the way of frequency division multiplexing or code division multiplexing, at least one channel state information reference signals of beam scanning will be used for
CSI-RS is mapped on multiple subcarriers of scheduled transmission bandwidth, and is sent to mobile terminal, wherein multiple subcarriers pair
Answer same time quantum.
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| US20140029696A1 (en) * | 2010-01-18 | 2014-01-30 | Pantech Co., Ltd. | Method and apparatus for allocating channel state information-reference signal in wireless communication system |
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| CN102612808A (en) * | 2009-08-14 | 2012-07-25 | Lg电子株式会社 | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| US20140029696A1 (en) * | 2010-01-18 | 2014-01-30 | Pantech Co., Ltd. | Method and apparatus for allocating channel state information-reference signal in wireless communication system |
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