CN101594335A - The mapping method of reference signal and Physical Resource Block - Google Patents
The mapping method of reference signal and Physical Resource Block Download PDFInfo
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- CN101594335A CN101594335A CNA200910150224XA CN200910150224A CN101594335A CN 101594335 A CN101594335 A CN 101594335A CN A200910150224X A CNA200910150224X A CN A200910150224XA CN 200910150224 A CN200910150224 A CN 200910150224A CN 101594335 A CN101594335 A CN 101594335A
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Abstract
The invention provides the mapping method of a kind of reference signal and Physical Resource Block, be used for one or more reference signal is mapped to the Physical Resource Block of long evolving system, wherein, Physical Resource Block comprises 12 subcarriers on frequency domain, Physical Resource Block comprises two continuous slots of time domain equal in length, and every road reference signal includes a plurality of reference signals, comprise: one or more reference signal is mapped on N the orthogonal frequency division multiplex OFDM symbol of Physical Resource Block, wherein, the value of N is one of following: 2,3,4; Each road reference signal is mapped on M the subcarrier on the OFDM symbol, and wherein, the value of M is one of following: 1,2,3,4.The present invention, makes that realization is fairly simple, and makes the LTE systematic function be improved based on the position of each reference signal in Physical Resource Block of layer by clearly, helps expanding to the reference signal design of high-order MIMO, has good forward compatibility.
Description
Technical field
The present invention relates to the communications field, relate in particular to the mapping method of a kind of reference signal and Physical Resource Block.
Background technology
Long Term Evolution (Long Term Evolution abbreviates LTE as) system is the essential planning of third generation partnership.When the LTE system adopts the regular circulation prefix, time slot comprise 7 length on/descending symbol, when the LTE system adopts extended cyclic prefix, time slot comprise 6 length on/descending symbol.Fig. 1 is the structural representation of the Physical Resource Block of the system bandwidth of LTE system when being 5MHz, as shown in Figure 1, a Resource Unit (ResourceElement, abbreviate RE as) be a subcarrier in the OFDM symbol, and a downlink resource piece (Resource Block abbreviates RB as) is made of continuous 12 subcarriers and 7 continuous (in the time of extended cyclic prefix being 6) OFDM symbols.A Resource Unit is 180kHz on frequency domain, is a general time slots length on the time domain, when carrying out resource allocation, can be that base unit distributes with the Resource Block.
The LTE system supports the MIMO of 4 antennas to use, for example, antenna port # 0, antenna port # 1, antenna port # 2, antenna port #3, and, antenna port # 0, antenna port # 1, antenna port # 2, antenna port #3 all adopt sub-district special reference signal (the Cell-specific reference signals of full bandwidth, abbreviate CRS as) mode, the function of this CRS is: down channel is carried out mass measurement, and down channel is estimated (demodulation).When Cyclic Prefix is the regular circulation prefix, these publicly-owned reference signals in the position in the Physical Resource Block shown in Fig. 2 a, when Cyclic Prefix is extended cyclic prefix, these publicly-owned reference signals in the position in the Physical Resource Block shown in Fig. 2 b.In addition, also has the proprietary reference signal of a kind of user (UE-specific reference signals), this reference signal is only transmitted on the time-frequency domain position at the proprietary Physical Downlink Shared Channel of user (Physical downlink shared channel abbreviates PDSCH as) place.
(Further Advancements for E-UTRA, LTE-Advanced) system is the evolution version of LTE Release-8 to senior Long Term Evolution.LTE-Advanced satisfies except needs or surpasses 3GPP TR 25.913: all related needs of " Requirements for EvolvedUTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) ", also should meet or exceed the demand of the IMT-Advanced of ITU-R proposition.Wherein, the demand with LTE Release-8 backward compatibility is meant: the terminal of LTE Release-8 can be worked in the network of LTE-Advanced, and the terminal of LTE-Advanced can be worked in the network of LTE Release-8.
At present, the clear and definite descending application that can support 8 antennas at most of LTE-Advanced among demand research report TR 36.814 V0.1.1 of LTE-Advanced; In the 56th meeting of in February, 2009 3GPP to LTE-Advanced clear and definite for supporting the application and the CoMP of 8 antennas, the design basic framework (Way forward) of LTE-Advanced downlink reference signal under the use of technology such as double fluid Beamforming, to be defined as two types reference signal to the downlink reference signal of LTE-Advanced operation: towards the reference signal of PDSCH demodulation with towards channel condition information (Channel Status Information, abbreviate CSI as) reference signal that produces, and, reference signal towards the PDSCH demodulation sends based on layer, every layer of a kind of reference signal of correspondence, at present, in the LTE-Advanced system, the number of plies that can support is 8 at most, and major programme is shown in Fig. 3 a and Fig. 3 b.
Yet because the frequency domain position of reference signal on different time domain OFDM symbol on same road is different, this complexity that causes realizing becomes big.
Summary of the invention
The present invention aims to provide the mapping method of a kind of reference signal and Physical Resource Block, with the bigger problem of implementation complexity of the mapping method that solves correlation technique.
According to an aspect of the present invention, the mapping method of a kind of reference signal and Physical Resource Block is provided, be used for one or more reference signal is mapped to the Physical Resource Block of long evolving system, wherein, Physical Resource Block comprises 12 subcarriers on frequency domain, Physical Resource Block comprises two continuous slots of time domain equal in length, and every road reference signal includes a plurality of reference signals, comprise: one or more reference signal is mapped on N the orthogonal frequency division multiplex OFDM symbol of Physical Resource Block, wherein, the value of N is one of following: 2,3,4; Each road reference signal is mapped on M the subcarrier on the OFDM symbol, and wherein, the value of M is one of following: 1,2,3,4.
The mapping method of the foregoing description is by the clear and definite position of each reference signal in Physical Resource Block based on layer, make that realization is fairly simple, and make the LTE systematic function be improved, help expanding to the reference signal design of high-order MIMO, have good forward compatibility.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is that the system bandwidth according to correlation technique is the schematic diagram of Physical Resource Block of the LTE system of 5MHz;
Fig. 2 is the schematic diagram according to special reference signal position in Physical Resource Block in sub-district in the LTE system of correlation technique;
Fig. 3 is the schematic diagram of the proprietary two-layer reference signal position in Physical Resource Block of existing terminal;
Fig. 4 is the flow chart according to the mapping method of the reference signal of the inventive method embodiment and Physical Resource Block;
Fig. 5 is the schematic diagram of reference signal position of the example 1 of method shown in Figure 4;
Fig. 6 is the schematic diagram of reference signal position of the example 2 of method shown in Figure 4;
Fig. 7 is the schematic diagram of reference signal position of the example 3 of method shown in Figure 4;
Fig. 8 is the schematic diagram of reference signal position of the example 4 of method shown in Figure 4.
Embodiment
Functional overview
At present, the mapping scheme of reference signal or based on the sub-district special reference signal of antenna port, or based on one or more layers special reference signal, at this problem, the invention provides the mapping scheme of a kind of reference signal and Physical Resource Block, this reference signal can be based on the reference signal of layer, to support the use of relevant art, by mapping scheme provided by the invention, can improve the overall performance of system.
Under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Method embodiment
According to the embodiment of the invention, provide the mapping method of a kind of reference signal and Physical Resource Block.
Fig. 4 is the flow chart according to the mapping of the reference signal of the embodiment of the invention and Physical Resource Block, need to prove, for convenience of description, in Fig. 4, illustrated and described the technical scheme of method embodiment of the present invention, can in computer system, carry out such as a set of computer-executable instructions in the step shown in Fig. 4 with the form of step.Though figure 4 illustrates logical order, in some cases, can carry out step shown or that describe with the order that is different from herein.As shown in Figure 4, this method is used for one or more reference signal is mapped to the Physical Resource Block of long evolving system, wherein, Physical Resource Block comprises 12 subcarriers on frequency domain, Physical Resource Block comprises two continuous slots of time domain equal in length, and every road reference signal includes a plurality of reference signals, particularly, may further comprise the steps:
Step S302 is mapped to one or more reference signal on N the orthogonal frequency division multiplex OFDM symbol of Physical Resource Block, and wherein, the value of N is one of following: 2,3,4;
Step S304 is mapped to each road reference signal on M the subcarrier on the OFDM symbol, and wherein, the value of M is one of following: 1,2,3,4;
By the technical scheme that the embodiment of the invention provides, based on the position of each reference signal in Physical Resource Block of layer, filled up the blank of prior art by clearly, by the resource block mapping scheme of reference signal of the present invention, make that realization is fairly simple.
In addition, the mapping method of prior art also is unfavorable for expanding to the reference signal design of high-order mimo, and, what its transmission performance neither be optimum, and this method helps expanding to the reference signal design of high-order MIMO, has fine forward compatibility.
Method one: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; Wherein, A=0,1,2,3;
Method two: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12, the subcarrier A+6 of second OFDM symbol of 4 OFDM symbols, the subcarrier A+6 of the 4th OFDM symbol of the subcarrier A of the 3rd OFDM symbol of 4 OFDM symbols, 12,4 OFDM symbols of subcarrier (A+8) mod; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+6 of first OFDM symbol of 4 OFDM symbols, the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12, the subcarrier A+6 of the 3rd OFDM symbol of 4 OFDM symbols, the subcarrier A of the 4th OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12; Wherein, A=0,1,2,3.
Method one: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12; Wherein, A=0,1,2;
Method two: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6; Wherein, A=0,1,2;
Method three: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+5 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, subcarrier A+3, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod; Wherein, A=0,1,2;
Method four: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, subcarrier A, the subcarrier A+6 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A+3 of the 11st OFDM symbol, subcarrier (A+9) mod 12; Wherein, A=0,1,2;
Method five: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A+2, subcarrier (A+8) mod 12 of the subcarrier A of the 5th OFDM symbol, subcarrier A+3, subcarrier A+6,12, the 8 OFDM symbols of subcarrier (A+9) mod; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+5 of the 8th OFDM symbol, subcarrier (A+11) mod12, the subcarrier A of the 11st OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12; Wherein, A=0,1,2;
Method six: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+3, subcarrier A, the subcarrier A+3 of 12, the 11 OFDM symbols of subcarrier (A+9) mod, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+6 of the 5th OFDM symbol, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+5, subcarrier A+8,12, the 11 OFDM symbols of subcarrier (A+11) mod; Wherein, A=0,1,2;
Method seven: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of second OFDM symbol of the subcarrier A of first OFDM symbol of 2 OFDM symbols, subcarrier A+3, subcarrier A+6,12,2 OFDM symbols of subcarrier (A+9) mod, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of second OFDM symbol of the subcarrier A+B of first OFDM symbol of 2 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, 12,2 OFDM symbols of subcarrier (A+9+B) mod, subcarrier A+6+B, subcarrier (A+9+B) mod 12; Wherein, A=0,1,2; B=1,2;
Method eight: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of second OFDM symbol of the subcarrier A of first OFDM symbol of 2 OFDM symbols, subcarrier A+4,12,2 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of second OFDM symbol of the subcarrier A+B of first OFDM symbol of 2 OFDM symbols, subcarrier A+4+B, 12,2 OFDM symbols of subcarrier (A+8+B) mod, subcarrier (A+8+B) mod 12; Wherein, A=0,1,2; B=1,2.
Optional embodiment 3, the multichannel reference signal is 4 the tunnel, 4 tunnel reference signals is mapped on 2 OFDM symbols of Physical Resource Block, and each road reference signal is mapped to specifically comprises following at least a method on M the subcarrier on the OFDM symbol:
Method one: subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of second OFDM symbol that a plurality of reference signals in the first via reference signal is mapped to subcarrier A, subcarrier A+4,12, two OFDM symbols of subcarrier (A+8) mod of first OFDM symbol of two OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of second OFDM symbol of subcarrier A+2, subcarrier A+6,12, two OFDM symbols of subcarrier (A+10) mod of first OFDM symbol of two OFDM symbols; Subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 with second OFDM symbol of subcarrier A+1, the subcarrier A+5 of first OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the Third Road reference signal, 12, two OFDM symbols of subcarrier (A+9) mod; A plurality of reference signals in the four tunnel reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12 of second OFDM symbol of subcarrier A+3, subcarrier A+7,12, two OFDM symbols of subcarrier (A+11) mod of first OFDM symbol of two OFDM symbols; Wherein, A=0,1,2,3;
Method two: subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of second OFDM symbol that a plurality of reference signals in the first via reference signal is mapped to subcarrier A, subcarrier A+4,12, two OFDM symbols of subcarrier (A+8) mod of first OFDM symbol of two OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 of second OFDM symbol of subcarrier A+1, subcarrier A+5,12, two OFDM symbols of subcarrier (A+9) mod of first OFDM symbol of two OFDM symbols; Subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 with second OFDM symbol of subcarrier A+2, the subcarrier A+6 of first OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the Third Road reference signal, 12, two OFDM symbols of subcarrier (A+10) mod; A plurality of reference signals in the four tunnel reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12 of second OFDM symbol of subcarrier A+3, subcarrier A+7,12, two OFDM symbols of subcarrier (A+11) mod of first OFDM symbol of two OFDM symbols; Wherein, A=0,1,2,3;
Method three: subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of second OFDM symbol that a plurality of reference signals in the first via reference signal is mapped to subcarrier A, subcarrier A+4,12, two OFDM symbols of subcarrier (A+8) mod of first OFDM symbol of two OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of second OFDM symbol of subcarrier A+2, subcarrier A+6,12, two OFDM symbols of subcarrier (A+10) mod of first OFDM symbol of two OFDM symbols; With subcarrier A+1, the subcarrier A+7 of first OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the Third Road reference signal, the subcarrier A+1 of second OFDM symbol of two OFDM symbols, subcarrier A+7; A plurality of reference signals in the four tunnel reference signal are mapped to subcarrier A+3, the subcarrier A+9 of first OFDM symbol of two OFDM symbols, the subcarrier A+3 of second OFDM symbol of two OFDM symbols, subcarrier A+9; Wherein, A=0,1,2,3;
Method four: a plurality of reference signals in the first via reference signal are mapped to subcarrier A, the subcarrier A+6 of first OFDM symbol of two OFDM symbols, the A of second OFDM symbol of two OFDM symbols, subcarrier A+6; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+3, subcarrier (A+9) mod 12 of second OFDM symbol of subcarrier A+3,12, two OFDM symbols of subcarrier (A+9) mod of first OFDM symbol of two OFDM symbols; Subcarrier A+2, subcarrier (A+8) mod 12 with second OFDM symbol of the subcarrier A+2 of first OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the Third Road reference signal, 12, two OFDM symbols of subcarrier (A+8) mod; A plurality of reference signals in the four tunnel reference signal are mapped to subcarrier A+4, subcarrier (A+10) mod 12 of second OFDM symbol of subcarrier A+4,12, two OFDM symbols of subcarrier (A+10) mod of first OFDM symbol of two OFDM symbols; Wherein, A=0,1,2,3,4,5;
Method five: a plurality of reference signals in the first via reference signal are mapped to subcarrier A, the subcarrier A+6 of first OFDM symbol of two OFDM symbols, the A of second OFDM symbol of two OFDM symbols, subcarrier A+6; Subcarrier A+1, subcarrier (A+7) mod 12 with second OFDM symbol of the subcarrier A+1 of first OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the Third Road reference signal, 12, two OFDM symbols of subcarrier (A+7) mod; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+2, subcarrier (A+8) mod 12 of second OFDM symbol of subcarrier A+2,12, two OFDM symbols of subcarrier (A+8) mod of first OFDM symbol of two OFDM symbols; A plurality of reference signals in the four tunnel reference signal are mapped to subcarrier A+3, subcarrier (A+9) mod 12 of second OFDM symbol of subcarrier A+3,12, two OFDM symbols of subcarrier (A+9) mod of first OFDM symbol of two OFDM symbols; Wherein, A=0,1,2,3,4,5.
Optional embodiment 4, the multichannel reference signal is 4 the tunnel, 4 tunnel reference signals is mapped on 4 OFDM symbols of Physical Resource Block, and each road reference signal is mapped to specifically comprises following at least a method on M the subcarrier on the OFDM symbol:
Method one: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, 12,4 OFDM symbols of subcarrier (A+8+B) mod, subcarrier (A+8+B) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, 12,4 OFDM symbols of subcarrier (A+8+B) mod, subcarrier (A+8+B) mod 12; Wherein, A=0,1,2,3; B=1,2;
Method two: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, 12,4 OFDM symbols of subcarrier (A+8+B) mod, subcarrier (A+8+B) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, 12,4 OFDM symbols of subcarrier (A+8+B) mod, subcarrier (A+8+B) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; Wherein, A=0,1,2,3; B=1,2;
Method three: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+1 of first OFDM symbol of 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+1 of second OFDM symbol of 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 4th OFDM symbol of 4 OFDM symbols; Wherein, A=0,1,2,3;
Method four: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4,12,4 OFDM symbols of subcarrier (A+8) mod, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: subcarrier A+2, the subcarrier A+6 of the 4th OFDM symbol of the subcarrier A+2 of second OFDM symbol of 4 OFDM symbols, subcarrier A+6,12,4 OFDM symbols of subcarrier (A+10) mod, subcarrier (A+10) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+1 of first OFDM symbol of 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of 4 OFDM symbols; Wherein, A=0,1,2;
Method five: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 4th OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+3 of first OFDM symbol of 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of 4 OFDM symbols; Wherein, A=0,1,2,3,4,5;
Method six: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+3 of first OFDM symbol of 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 3rd OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 4th OFDM symbol of 4 OFDM symbols; Wherein, A=0,1,2,3,4,5.
Method one: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+3 of the 8th OFDM symbol, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+6 of the 8th OFDM symbol, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12; Wherein, A=0,1;
Method two: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+6 of the 8th OFDM symbol, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+3 of the 8th OFDM symbol, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7; Wherein, A=0,1;
Method three: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+5 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, subcarrier A+3, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+4 of the 8th OFDM symbol, subcarrier A+7, the subcarrier A+1 of the 11st OFDM symbol, subcarrier (A+10) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier A+7, subcarrier A+4, the subcarrier A+7 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+10) mod; Wherein, A=0,1.
Method one: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier (A+8+B) mod12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of 4 OFDM symbols, subcarrier (A+8+B) mod 12; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12; Wherein, A=0; B=1,2;
Method two: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier (A+8+B) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier (A+8) mod 12; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of 4 OFDM symbols, subcarrier (A+8+B) mod 12; Wherein, A=0; B=1,2;
Method three: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 4th OFDM symbol of 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 4th OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12; Wherein, A=0; B=1,2;
Method four: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 4th OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 3rd OFDM symbol of 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 4th OFDM symbol of 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod 12; Wherein, A=0; B=1,2.
Optional embodiment 8, the multichannel reference signal is 8 the tunnel, 8 tunnel reference signals are mapped on 2 OFDM symbols of Physical Resource Block, and each road reference signal is mapped on M the subcarrier on the OFDM symbol specifically comprises: subcarrier A, the subcarrier A+4, subcarrier (A+8) mod 12 that a plurality of reference signals in the first via reference signal are mapped to first OFDM symbol of two OFDM symbols; A plurality of reference signals in the second tunnel reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of second OFDM symbol of two OFDM symbols; A plurality of reference signals in the Third Road reference signal are mapped to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 of first OFDM symbol of two OFDM symbols; With second OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the four tunnel reference signal to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12; A plurality of reference signals in the five tunnel reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of first OFDM symbol of two OFDM symbols; A plurality of reference signals in the six tunnel reference signal are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of second OFDM symbol of two OFDM symbols; A plurality of reference signals in the seven tunnel reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod12 of first OFDM symbol of two OFDM symbols; With second OFDM symbol of two OFDM symbols of the mapping of a plurality of reference signals in the eight tunnel reference signal to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12; Wherein, A=0.
Optional embodiment 9, the LTE system adopts extended cyclic prefix, Physical Resource Block comprises 12 OFDM symbols in time domain, and the multichannel reference signal is 8 the tunnel, and each road reference signal is mapped to specifically comprises following at least a method on M the subcarrier on the OFDM symbol:
Method one: the subcarrier 0, subcarrier 4, the subcarrier 8 that first via reference signal are mapped to the 5th OFDM symbol; The second tunnel reference signal is mapped to subcarrier 2, subcarrier 6, the subcarrier 10 of the 12nd OFDM symbol; The Third Road reference signal is mapped to subcarrier 1, subcarrier 5, the subcarrier 9 of the 5th OFDM symbol; The four tunnel reference signal is mapped to subcarrier 3, subcarrier 7, the subcarrier 11 of the 12nd OFDM symbol; The five tunnel reference signal is mapped to subcarrier 2, subcarrier 6, the subcarrier 10 of the 5th OFDM symbol; The six tunnel reference signal is mapped to subcarrier 0, subcarrier 4, the subcarrier 8 of the 12nd OFDM symbol; The seven tunnel reference signal is mapped to subcarrier 3, subcarrier 7, the subcarrier 11 of the 5th OFDM symbol; The eight tunnel reference signal is mapped to subcarrier 1, subcarrier 5, the subcarrier 9 of the 12nd OFDM symbol;
Method two: first via reference signal is mapped to the subcarrier 5 of the subcarrier 0 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 9 of the 11st OFDM symbol; The second tunnel reference signal is mapped to the subcarrier 8 of the subcarrier 3 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 0 of the 11st OFDM symbol; The Third Road reference signal is mapped to the subcarrier 6 of the subcarrier 1 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 10 of the 11st OFDM symbol; The four tunnel reference signal is mapped to the subcarrier 10 of the subcarrier 4 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 1 of the 11st OFDM symbol; The five tunnel reference signal is mapped to the subcarrier 11 of the subcarrier 6 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 3 of the 11st OFDM symbol; The six tunnel reference signal is mapped to the subcarrier 2 of the subcarrier 10 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 6 of the 11st OFDM symbol; The seven tunnel reference signal is mapped to the subcarrier 0 of the subcarrier 7 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 4 of the 11st OFDM symbol; The eight tunnel reference signal is mapped to the subcarrier 3 of the subcarrier 10 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 7 of the 11st OFDM symbol.
Optional embodiment 10, in the method for above-mentioned optional embodiment 7 to 9, Ying She reference signal is 5 the tunnel if desired, the reference signal of shining upon on the time-frequency position of any 3 tunnel reference signals in 8 tunnel reference signals that then will shine upon replaces with data; Ying She reference signal is 6 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of any 2 tunnel reference signals in 8 tunnel reference signals that then will shine upon replaces with data; Ying She reference signal is 7 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of the arbitrary road reference signal in 8 tunnel reference signals that then will shine upon replaces with data.
Optional embodiment 14, in the method for above-mentioned optional embodiment 12 or 13, the ascending arrangement of time-domain position coordinate or the descending arrangement of first OFDM symbol, second OFDM symbol, the 3rd OFDM symbol and the 4th OFDM symbol.
Optional embodiment 16, the LTE system adopts extended cyclic prefix, Physical Resource Block comprises 12 OFDM symbols in time domain, one or more reference signal is mapped on 2 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, 2 OFDM symbols that are mapped with reference signal are: the 5th OFDM symbol and the 12nd OFDM symbol in 12 OFDM symbols; Perhaps the 5th OFDM symbol and the 9th OFDM symbol in 12 OFDM symbols; Perhaps the 5th OFDM symbol and the 11st OFDM symbol in 12 OFDM symbols; Perhaps the 8th OFDM symbol and the 9th OFDM symbol in 12 OFDM symbols.
Optional embodiment 17, in the method for above-mentioned optional embodiment 1 to 16, reference signal is meant the reference signal based on layer.
Be elaborated below in conjunction with example 1 to 4 pairs of methods shown in Figure 4 of example.
Should illustrate, in this article, the described reference signal of the first via is corresponding to the reference signal # 0 of layer 1, the second tunnel described reference signal is corresponding to the reference signal # 1 of layer 2, the described reference signal of Third Road is corresponding to the reference signal # 2 of layer 3, the four tunnel described reference signal is corresponding to the reference signal #3 of layer 4, the five tunnel reference signal is corresponding to the reference signal #4 of layer 5, the six tunnel reference signal is corresponding to the reference signal # 5 of layer 6, the seven tunnel reference signal is corresponding to the reference signal # 6 of layer 7, and the eight tunnel reference signal is corresponding to the reference signal # 7 of layer 8.12 sub-carrier indices of Physical Resource Block correspondence are subcarrier # 0, subcarrier # 1, subcarrier # 2, subcarrier #3, subcarrier #4, subcarrier # 5, subcarrier # 6, subcarrier # 7, subcarrier #8, subcarrier #9, subcarrier #10, subcarrier # 11.
And, in Fig. 5 to Fig. 8, number in the figure T
1Corresponding to the reference signal # 0 of layer 1, T
2Corresponding to the reference signal # 1 of layer 2, T
3Corresponding to the reference signal # 2 of layer 3, T
4Corresponding to the reference signal #3 of layer 4, T
5Corresponding to the reference signal #4 of layer 5, T
6Corresponding to the reference signal # 5 of layer 6, T
7Corresponding to the reference signal # 6 of layer 7, T
8 Reference signal # 7 corresponding to layer 8.
In Fig. 5 to Fig. 8,12 of the Physical Resource Block correspondence sub-carrier indices are subcarrier # 0, subcarrier # 1 among the figure, subcarrier # 2, subcarrier #3, subcarrier #4, subcarrier # 5, subcarrier # 6, subcarrier # 7, subcarrier #8, subcarrier #9, subcarrier #10, subcarrier # 11.
Example 1
This case description the mapping of the Physical Resource Block of transmission one deck reference signal in subframe.
When Fig. 5 a was subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block was shown in Fig. 5 a, comprise layer 1 reference signal # 0, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbols in time domain, and, A=0.
The reference signal # 0 of layer 1 is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8, subcarrier # 2, the subcarrier # 6 of the 13rd OFDM symbol, subcarrier #10.
Fig. 5 b is a subframe when adopting extended cyclic prefix, and the situation schematic diagram of reference signal in Physical Resource Block shown in Fig. 4 b, comprises the reference signal # 0 of layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbols in time domain.
Example 1 has provided the pattern schematic diagram of one deck reference signal, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, can improve the overall performance of system.
Implement 2
This case description the mapping of the Physical Resource Block of the two-layer reference signal of transmission in subframe.
When Fig. 6 a and Fig. 6 b are subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 a and Fig. 6 b, comprise the reference signal # 0 of layer 1, the reference signal # 1 of layer 2, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbols in time domain.
Below in conjunction with Fig. 6 a the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, reference signal # 0, reference signal # 1 are mapped in 14 OFDM symbols of Physical Resource Block on the 4th, 7,10,13 the OFDM symbol, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 6 a, comprise following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8;
Below in conjunction with Fig. 6 b the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, this reference signal # 0, reference signal # 1 are mapped in 14 OFDM symbols of Physical Resource Block the different carrier on the 4th OFDM symbol and the 14th the OFDM symbol, shown in Fig. 6 b, comprise following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 14th OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 4th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 14th OFDM symbol, subcarrier # 6, subcarrier #10;
When Fig. 6 c to Fig. 6 g is subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 c to Fig. 6 g, comprise the reference signal # 0 of layer 1, the reference signal # 1 of layer 2, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbols in time domain.
Below in conjunction with Fig. 6 c the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, shown in Fig. 6 c, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 2 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier # 6;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 5 of the 8th OFDM symbol, subcarrier # 11, the subcarrier # 0 of the 11st OFDM symbol, subcarrier # 6;
Below in conjunction with Fig. 6 d the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, shown in Fig. 6 d, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 5 of the 8th OFDM symbol, subcarrier # 11, sub-subcarrier #3, the subcarrier #9 of the 11st OFDM symbol;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 2 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 1st OFDM symbol, subcarrier # 6;
Below in conjunction with Fig. 6 e the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, shown in Fig. 6 e, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 5 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier #9;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 2 of the 8th OFDM symbol, subcarrier # 11, the subcarrier #3 of the 11st OFDM symbol, subcarrier # 6;
Below in conjunction with Fig. 6 f the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, shown in Fig. 6 f, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9, the subcarrier # 0 of the 11st OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 5th OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11, the subcarrier # 2 of the 11st OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11;
Below in conjunction with Fig. 6 g the Physical Resource Block mapping of reference signal # 0, reference signal # 1 is described, shown in Fig. 6 g, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 5th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 11st OFDM symbol, subcarrier # 6, subcarrier #10;
Example 2 has provided the pattern schematic diagram of two-layer reference signal, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, can improve the overall performance of system.
Example 3
This case description the mapping of the Physical Resource Block of four layers of reference signal of transmission in subframe.When Fig. 7 a and Fig. 7 b are subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 7 a and Fig. 7 b, reference signal # 0, the reference signal # 1 of layer 2, the reference signal # 2 of layer 3, the reference signal #3 of layer 4 that comprise layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbols in time domain.
Below in conjunction with Fig. 7 a to reference signal # 0, reference signal # 1, reference signal # 2, the Physical Resource Block mapping of reference signal #3 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is mapped in 14 OFDM symbols of Physical Resource Block the 4th, 7,10, on 13 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 7 a, comprise following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 2 of the 4th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 10th OFDM symbol, subcarrier # 6, subcarrier #10;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 13rd OFDM symbol, subcarrier # 6, subcarrier #10;
Below in conjunction with Fig. 7 b to reference signal # 0, reference signal # 1, reference signal # 2, the Physical Resource Block mapping of reference signal #3 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is mapped in 14 OFDM symbols of Physical Resource Block the 4th, 7,10, on 13 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 7 b, comprise following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 13rd OFDM symbol, subcarrier # 6, subcarrier #10;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 2 of the 4th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 10th OFDM symbol, subcarrier # 6, subcarrier #10;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8;
Below in conjunction with Fig. 7 c the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is described, this reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 are mapped in 14 OFDM symbols of Physical Resource Block the different carrier on the 4th OFDM symbol and the 14th the OFDM symbol, shown in Fig. 7 c, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to subcarrier # 0, subcarrier #4, the subcarrier #8 of above-mentioned Physical Resource Block (A=0);
The second tunnel described reference signal (that is reference signal #1) is mapped to subcarrier # 2, subcarrier # 6, the subcarrier #10 of above-mentioned Physical Resource Block;
The described reference signal of Third Road (that is reference signal #2) is mapped to subcarrier # 1, subcarrier # 5, the subcarrier #9 of above-mentioned Physical Resource Block;
The four tunnel described reference signal (that is reference signal #3) is mapped to subcarrier #3, subcarrier # 7, the subcarrier # 11 of above-mentioned Physical Resource Block;
Below in conjunction with Fig. 7 d to reference signal # 0, reference signal # 1, reference signal # 2, the Physical Resource Block mapping of reference signal #3 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is mapped in 14 OFDM symbols of Physical Resource Block the 4th, 7,10, on 13 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 7 d, comprise following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 13rd OFDM symbol, subcarrier # 6, subcarrier #10;
The described reference signal of Third Road (that is, reference signal #2) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 1 of the 4th OFDM symbol, subcarrier # 7, the subcarrier # 1 of the 10th OFDM symbol, subcarrier # 7;
The four tunnel described reference signal (that is, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 7th OFDM symbol, subcarrier #9, the subcarrier #3 of the 13rd OFDM symbol, subcarrier #9;
When Fig. 7 e to Fig. 7 h is subframe employing extended cyclic prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 7 e to Fig. 7 h, reference signal # 0, the reference signal # 1 of layer 2, the reference signal # 2 of layer 3, the reference signal #3 of layer 4 that comprise layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbols in time domain.
Below in conjunction with Fig. 7 e the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is described, shown in Fig. 7 e, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 2 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier # 6;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 5 of the 8th OFDM symbol, subcarrier # 11, the subcarrier #3 of the 11st OFDM symbol, subcarrier #9;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 1 of the 5th OFDM symbol, subcarrier # 7, the subcarrier #3 of the 8th OFDM symbol, subcarrier #9, the subcarrier # 1 of the 11st OFDM symbol, subcarrier # 7;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #4 of the 5th OFDM symbol, subcarrier #10, the subcarrier # 1 of the 8th OFDM symbol, subcarrier # 6, the subcarrier #4 of the 11st OFDM symbol, subcarrier #10;
Below in conjunction with Fig. 7 f the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is described, shown in Fig. 7 f, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 5 of the 8th OFDM symbol, subcarrier # 11, the subcarrier #3 of the 11st OFDM symbol, subcarrier #9;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 2 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier # 6;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 1 of the 5th OFDM symbol, subcarrier # 7, the subcarrier # 1 of the 8th OFDM symbol, subcarrier # 6, the subcarrier #4 of the 11st OFDM symbol, subcarrier #10;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #4 of the 5th OFDM symbol, subcarrier #10, the subcarrier #3 of the 8th OFDM symbol, subcarrier #9, the subcarrier # 1 of the 11st OFDM symbol, subcarrier # 7;
Below in conjunction with Fig. 7 g the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is described, shown in Fig. 7 g, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #9, the subcarrier # 5 of the 8th OFDM symbol, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier #9;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier # 6, the subcarrier # 2 of the 8th OFDM symbol, subcarrier # 11, the subcarrier #3 of the 11st OFDM symbol, subcarrier # 6;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 1 of the 5th OFDM symbol, subcarrier #10, the subcarrier #4 of the 8th OFDM symbol, subcarrier # 7, the subcarrier # 1 of the 11st OFDM symbol, subcarrier #10;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #4 of the 5th OFDM symbol, subcarrier # 7, the subcarrier # 2 of the 8th OFDM symbol, subcarrier #10, the subcarrier #4 of the 11st OFDM symbol, subcarrier # 7;
Below in conjunction with Fig. 7 h the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3 is described, shown in Fig. 7 h, comprises following processing:
With the described reference signal of the first via (promptly, reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier # 0 of the 11st OFDM symbol, subcarrier #4, subcarrier #8;
With the second tunnel described reference signal (promptly, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 5th OFDM symbol, subcarrier # 6, subcarrier #10, the subcarrier # 2 of the 11st OFDM symbol, subcarrier # 6, subcarrier #10;
With the described reference signal of Third Road (promptly, reference signal #2) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 1 of the 5th OFDM symbol, subcarrier # 5, subcarrier #9, the subcarrier # 1 of the 11st OFDM symbol, subcarrier # 5, subcarrier #9;
With the four tunnel described reference signal (promptly, reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier #3 of the 5th OFDM symbol, subcarrier # 7, subcarrier # 11, the subcarrier #3 of the 11st OFDM symbol, subcarrier # 7, subcarrier # 11;
Example 4
This case description the mapping of the Physical Resource Block of eight layers of reference signal of transmission in subframe.
When Fig. 8 a and Fig. 8 b are subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 8 a and Fig. 8 b, reference signal # 0, the reference signal # 1 of layer 2, reference signal # 2, the reference signal #3 of layer 4 of layer 3, reference signal #4, the reference signal # 5 of layer 6 of layer 5, the reference signal # 6 of layer 7, the reference signal # 7 of layer 8 that comprise layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbols in time domain.
Below in conjunction with Fig. 8 a to reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, the Physical Resource Block mapping of reference signal # 7 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is mapped in 14 OFDM symbols of Physical Resource Block the 4th, 7,10, on 13 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 8 a, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8;
The second tunnel described reference signal (that is reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8;
The described reference signal of Third Road (that is reference signal #2) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 10th OFDM symbol, subcarrier # 6, subcarrier #10;
The four tunnel described reference signal (that is reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 13rd OFDM symbol, subcarrier # 6, subcarrier #10;
The five tunnel reference signal (that is reference signal #4) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 4th OFDM symbol, subcarrier # 6, subcarrier #10;
The six tunnel reference signal (that is reference signal #5) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10;
The seven tunnel reference signal (that is reference signal #6) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
The eight tunnel reference signal (that is reference signal #7) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8;
Below in conjunction with Fig. 8 b to reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, the Physical Resource Block mapping of reference signal # 7 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is mapped in 14 OFDM symbols of Physical Resource Block the 4th, 7,10, on 13 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 10th OFDM symbol, the 4th OFDM symbol is corresponding to the 13rd OFDM symbol, shown in Fig. 8 b, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8;
The second tunnel described reference signal (that is reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 7th OFDM symbol, subcarrier # 6, subcarrier #10;
The described reference signal of Third Road (that is reference signal #2) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 10th OFDM symbol, subcarrier # 6, subcarrier #10;
The four tunnel described reference signal (that is reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8;
The five tunnel reference signal (that is reference signal #4) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 4th OFDM symbol, subcarrier # 6, subcarrier #10;
The six tunnel reference signal (that is reference signal #5) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8;
The seven tunnel reference signal (that is reference signal #6) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 10th OFDM symbol, subcarrier #4, subcarrier #8;
The eight tunnel reference signal (that is reference signal #7) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 13rd OFDM symbol, subcarrier # 6, subcarrier #10;
When Fig. 8 c and Fig. 8 d are subframe employing extended cyclic prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 8 c and Fig. 8 d, reference signal # 0, the reference signal # 1 of layer 2, reference signal # 2, the reference signal #3 of layer 4 of layer 3, reference signal #4, the reference signal # 5 of layer 6 of layer 5, the reference signal # 6 of layer 7, the reference signal # 7 of layer 8 that comprise layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbols in time domain.
Below in conjunction with Fig. 8 c to reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, the Physical Resource Block mapping of reference signal # 7 describes, reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is mapped in 12 OFDM symbols of Physical Resource Block the 5th, 6,11, on 12 OFDM symbols, promptly, first OFDM symbol above is corresponding to the 5th OFDM symbol, second OFDM symbol is corresponding to the 6th OFDM symbol, the 3rd OFDM symbol is corresponding to the 11st OFDM symbol, the 4th OFDM symbol is corresponding to the 12nd OFDM symbol, shown in Fig. 8 c, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to the following time-frequency position (A=0) of above-mentioned Physical Resource Block: the subcarrier # 0 of the 5th OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9;
The second tunnel described reference signal (that is reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 6th OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9;
The described reference signal of Third Road (that is reference signal #2) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 11st OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11;
The four tunnel described reference signal (that is reference signal #3) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 12nd OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11;
The five tunnel reference signal (that is reference signal #4) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 5th OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11;
The six tunnel reference signal (that is reference signal #5) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 2 of the 6th OFDM symbol, subcarrier # 5, subcarrier #8, subcarrier # 11;
The seven tunnel reference signal (that is reference signal #6) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 11st OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9;
The eight tunnel reference signal (that is reference signal #7) is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the subcarrier # 0 of the 12nd OFDM symbol, subcarrier #3, subcarrier # 6, subcarrier #9;
Below in conjunction with Fig. 8 d the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is described, this reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 are mapped in 12 OFDM symbols of Physical Resource Block the different carrier on the 5th OFDM symbol or the 12nd the OFDM symbol, shown in Fig. 8 d, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to subcarrier # 0, subcarrier #4, the subcarrier #8 of the 5th OFDM symbol of above-mentioned Physical Resource Block (A=0);
The second tunnel described reference signal (that is reference signal #1) is mapped to subcarrier # 2, subcarrier # 6, the subcarrier #10 of the 12nd OFDM symbol of above-mentioned Physical Resource Block;
The described reference signal of Third Road (that is reference signal #2) is mapped to subcarrier # 1, subcarrier # 5, the subcarrier #9 of the 5th OFDM symbol of above-mentioned Physical Resource Block;
The four tunnel described reference signal (that is reference signal #3) is mapped to subcarrier #3, subcarrier # 7, the subcarrier # 11 of the 12nd OFDM symbol of above-mentioned Physical Resource Block;
The five tunnel reference signal (that is reference signal #4) is mapped to subcarrier # 2, subcarrier # 6, the subcarrier #10 of the 5th OFDM symbol of above-mentioned Physical Resource Block;
The six tunnel reference signal (that is reference signal #5) is mapped to subcarrier # 0, subcarrier #4, the subcarrier #8 of the 12nd OFDM symbol of above-mentioned Physical Resource Block;
The seven tunnel reference signal (that is reference signal #6) is mapped to subcarrier #3, subcarrier # 7, the subcarrier # 11 of the 5th OFDM symbol of above-mentioned Physical Resource Block;
The eight tunnel reference signal (that is reference signal #7) is mapped to subcarrier # 1, subcarrier # 5, the subcarrier #9 of the 12nd OFDM symbol of above-mentioned Physical Resource Block;
Below in conjunction with Fig. 8 e the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is described, this reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 are mapped in 12 OFDM symbols of Physical Resource Block the different carrier on the 5th OFDM symbol or the 12nd the OFDM symbol, shown in Fig. 8 e, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to the subcarrier # 5 of the subcarrier # 0 of the 5th OFDM symbol of above-mentioned Physical Resource Block (A=0), the 8th OFDM symbol, the subcarrier #9 of the 11st OFDM symbol;
The second tunnel described reference signal (that is reference signal #1) is mapped to the subcarrier #8 of the subcarrier #3 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 0 of the 11st OFDM symbol;
The described reference signal of Third Road (that is reference signal #2) is mapped to the subcarrier # 6 of the subcarrier # 1 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #10 of the 11st OFDM symbol;
The four tunnel described reference signal (that is reference signal #3) is mapped to the subcarrier #10 of the subcarrier #4 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 1 of the 11st OFDM symbol;
The five tunnel reference signal (that is reference signal #4) is mapped to the subcarrier # 11 of the subcarrier # 6 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #3 of the 11st OFDM symbol;
The six tunnel reference signal (that is reference signal #5) is mapped to the subcarrier # 2 of the subcarrier #10 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 6 of the 11st OFDM symbol;
The seven tunnel reference signal (that is reference signal #6) is mapped to the subcarrier # 0 of the subcarrier # 7 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #4 of the 11st OFDM symbol;
The eight tunnel reference signal (that is reference signal #7) is mapped to the subcarrier #3 of the subcarrier #10 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 7 of the 11st OFDM symbol;
Below in conjunction with Fig. 8 f the Physical Resource Block mapping of reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 is described, this reference signal # 0, reference signal # 1, reference signal # 2, reference signal #3, reference signal #4, reference signal # 5, reference signal # 6, reference signal # 7 are mapped in 12 OFDM symbols of Physical Resource Block the different carrier on the 5th OFDM symbol or the 12nd the OFDM symbol, shown in Fig. 8 f, comprise following processing:
The described reference signal of the first via (that is reference signal #0) is mapped to the subcarrier # 2 of the subcarrier # 0 of the 5th OFDM symbol of above-mentioned Physical Resource Block (A=0), the 8th OFDM symbol, the subcarrier # 6 of the 11st OFDM symbol;
The second tunnel described reference signal (that is reference signal #1) is mapped to the subcarrier # 5 of the subcarrier #3 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #9 of the 11st OFDM symbol;
The described reference signal of Third Road (that is reference signal #2) is mapped to the subcarrier #3 of the subcarrier # 1 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 7 of the 11st OFDM symbol;
The four tunnel described reference signal (that is reference signal #3) is mapped to the subcarrier # 6 of the subcarrier #4 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #10 of the 11st OFDM symbol;
The five tunnel reference signal (that is reference signal #4) is mapped to the subcarrier #8 of the subcarrier # 6 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 0 of the 11st OFDM symbol;
The six tunnel reference signal (that is reference signal #5) is mapped to the subcarrier # 11 of the subcarrier #9 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #3 of the 11st OFDM symbol;
The seven tunnel reference signal (that is reference signal #6) is mapped to the subcarrier #9 of the subcarrier # 7 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier # 1 of the 11st OFDM symbol;
The eight tunnel reference signal (that is reference signal #7) is mapped to the subcarrier # 0 of the subcarrier #10 of the 5th OFDM symbol of above-mentioned Physical Resource Block, the 8th OFDM symbol, the subcarrier #4 of the 11st OFDM symbol;
That example 2, example 3 and embodiment 4 have provided respectively is two-layer, the reference signal pattern schematic diagram of four layers and eight layers, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, can improve the overall performance of system.
As mentioned above, mapping method by means of reference signal provided by the invention and Physical Resource Block, by the clear and definite position of each reference signal in Physical Resource Block based on layer, filled up the blank of prior art, by the resource block mapping scheme of reference signal of the present invention, can improve the overall performance of system.
Need to prove that the present invention is that example illustrates technical scheme of the present invention with above-mentioned example only, but is not limited to this, the mapping scheme of the reference signal of employing inventive concept is all within protection scope of the present invention.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. the mapping method of reference signal and Physical Resource Block, be used for one or more reference signal is mapped to the Physical Resource Block of long evolving system, wherein, described Physical Resource Block comprises 12 subcarriers on frequency domain, described Physical Resource Block comprises two continuous slots of time domain equal in length, and every road reference signal includes a plurality of reference signals, it is characterized in that, comprising:
One or more described reference signal is mapped on N the orthogonal frequency division multiplex OFDM symbol of described Physical Resource Block, wherein, the value of N is one of following: 2,3,4;
The described reference signal in each road is mapped on M the subcarrier on the described OFDM symbol, and wherein, the value of M is one of following: 1,2,3,4.
2. method according to claim 1, it is characterized in that, described long evolving system adopts the regular circulation prefix, described Physical Resource Block comprises 14 OFDM symbols in time domain, described multichannel reference signal is 2 the tunnel, described 2 tunnel reference signals are mapped on 4 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
Wherein, A=0,1,2,3;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12, the subcarrier A+6 of second OFDM symbol of described 4 OFDM symbols, the subcarrier A of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12, the subcarrier A+6 of the 4th OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+6 of first OFDM symbol of described 4 OFDM symbols, the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12, the subcarrier A+6 of the 3rd OFDM symbol of described 4 OFDM symbols, the subcarrier A of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
Wherein, A=0,1,2,3.
3. method according to claim 1, it is characterized in that, described long evolving system adopts extended cyclic prefix, described Physical Resource Block comprises 12 OFDM symbols in time domain, described multichannel reference signal is 2 the tunnel, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12;
Wherein, A=0,1,2;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6;
Wherein, A=0,1,2;
Method three:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier (A+9) mod12, the subcarrier A+5 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, subcarrier A+3, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod;
Wherein, A=0,1,2;
Method four:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, subcarrier A, the subcarrier A+6 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A+3 of the 11st OFDM symbol, subcarrier (A+9) mod 12;
Wherein, A=0,1,2;
Method five:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: subcarrier A+2, subcarrier (A+8) mod 12 of the subcarrier A of the 5th OFDM symbol, subcarrier A+3, subcarrier A+6,12, the 8 OFDM symbols of subcarrier (A+9) mod;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+5 of the 8th OFDM symbol, subcarrier A, the subcarrier A+3 of 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier A+6, subcarrier (A+9) mod 12;
Wherein, A=0,1,2;
Method six:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+3, subcarrier A, the subcarrier A+3 of 12, the 11 OFDM symbols of subcarrier (A+9) mod, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+6 of the 5th OFDM symbol, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+5, subcarrier A+8,12, the 11 OFDM symbols of subcarrier (A+11) mod;
Wherein, A=0,1,2;
Method seven:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 2 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12, the subcarrier A of second OFDM symbol of described 2 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 2 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12, the subcarrier A+B of second OFDM symbol of described 2 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12;
Wherein, A=0,1,2; B=1,2;
Method eight:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of 2 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, the subcarrier A of second OFDM symbol of described 2 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 2 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12, the subcarrier A+B of second OFDM symbol of described 2 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12;
Wherein, A=0,1,2; B=1,2.
4. method according to claim 1, it is characterized in that, described multichannel reference signal is 4 the tunnel, described 4 tunnel reference signals are mapped on 2 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A of second OFDM symbol of described two OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+2 of second OFDM symbol of described two OFDM symbols, subcarrier A+6, subcarrier (A+10) mod 12;
A plurality of reference signals in the described reference signal of Third Road are shone upon subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+1 of second OFDM symbol of described two OFDM symbols, subcarrier A+5, subcarrier (A+9) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+3 of second OFDM symbol of described two OFDM symbols, subcarrier A+7, subcarrier (A+11) mod 12;
Wherein, A=0,1,2,3;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A of second OFDM symbol of described two OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+1 of second OFDM symbol of described two OFDM symbols, subcarrier A+5, subcarrier (A+9) mod12;
A plurality of reference signals in the described reference signal of Third Road are shone upon subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+2 of second OFDM symbol of described two OFDM symbols, subcarrier A+6, subcarrier (A+10) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+3 of second OFDM symbol of described two OFDM symbols, subcarrier A+7, subcarrier (A+11) mod 12;
Wherein, A=0,1,2,3;
Method three:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A of second OFDM symbol of described two OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+2 of second OFDM symbol of described two OFDM symbols, subcarrier A+6, subcarrier (A+10) mod 12;
A plurality of reference signals in the described reference signal of Third Road are shone upon subcarrier A+1, the subcarrier A+7 of first OFDM symbol of described two OFDM symbols, the subcarrier A+1 of second OFDM symbol of described two OFDM symbols, subcarrier A+7;
A plurality of reference signals in the four tunnel described reference signal are mapped to subcarrier A+3, the subcarrier A+9 of first OFDM symbol of described two OFDM symbols, the subcarrier A+3 of second OFDM symbol of described two OFDM symbols, subcarrier A+9;
Wherein, A=0,1,2,3;
Method four:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, the subcarrier A+6 of first OFDM symbol of described two OFDM symbols, the A of second OFDM symbol of described two OFDM symbols, subcarrier A+6;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+3, subcarrier (A+9) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+3 of second OFDM symbol of described two OFDM symbols, subcarrier (A+9) mod 12;
A plurality of reference signals in the described reference signal of Third Road are shone upon subcarrier A+2, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+2 of second OFDM symbol of described two OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to subcarrier A+4, subcarrier (A+10) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+4 of second OFDM symbol of described two OFDM symbols, subcarrier (A+10) mod 12;
Wherein, A=0,1,2,3,4,5;
Method five:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, the subcarrier A+6 of first OFDM symbol of described two OFDM symbols, the A of second OFDM symbol of described two OFDM symbols, subcarrier A+6;
A plurality of reference signals in the described reference signal of Third Road are shone upon subcarrier A+1, subcarrier (A+7) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+1 of second OFDM symbol of described two OFDM symbols, subcarrier (A+7) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+2, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+2 of second OFDM symbol of described two OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to subcarrier A+3, subcarrier (A+9) mod 12 of first OFDM symbol of described two OFDM symbols, the subcarrier A+3 of second OFDM symbol of described two OFDM symbols, subcarrier (A+9) mod 12;
Wherein, A=0,1,2,3,4,5.
5. method according to claim 1, it is characterized in that, described multichannel reference signal is 4 the tunnel, described 4 tunnel reference signals are mapped on 4 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12, subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12, subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
Wherein, A=0,1,2,3; B=1,2;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12, subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12, subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
Wherein, A=0,1,2,3; B=1,2;
Method three:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+1 of first OFDM symbol of described 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+1 of second OFDM symbol of described 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 4th OFDM symbol of described 4 OFDM symbols;
Wherein, A=0,1,2,3;
Method four:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12, subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+2 of second OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier (A+10) mod 12, subcarrier A+2, the subcarrier A+6 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+10) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+1 of first OFDM symbol of described 4 OFDM symbols, subcarrier A+7, subcarrier A+1, the subcarrier A+7 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of described 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of described 4 OFDM symbols;
Wherein, A=0,1,2;
Method five:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 4th OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+3 of first OFDM symbol of described 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of described 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of described 4 OFDM symbols;
Wherein, A=0,1,2,3,4,5;
Method six:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of second OFDM symbol of described 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 4th OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+3 of first OFDM symbol of described 4 OFDM symbols, subcarrier A+9, subcarrier A+3, the subcarrier A+9 of the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier A, the subcarrier A+6 of the 4th OFDM symbol of described 4 OFDM symbols;
Wherein, A=0,1,2,3,4,5.
6. method according to claim 1, it is characterized in that, described long evolving system adopts extended cyclic prefix, described Physical Resource Block comprises 12 OFDM symbols in time domain, described multichannel reference signal is 4 the tunnel, described 4 tunnel reference signals are mapped on 3 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+3 of the 8th OFDM symbol, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+6 of the 8th OFDM symbol, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12;
Wherein, A=0,1;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+3 of the subcarrier A+5 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier (A+9) mod 12, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+6 of the 8th OFDM symbol, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+3 of the 8th OFDM symbol, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7;
Wherein, A=0,1;
Method three:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of the 5th OFDM symbol, subcarrier (A+9) mod12, the subcarrier A+5 of the 8th OFDM symbol, subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, subcarrier A+3, the subcarrier A+6 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+11) mod;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: the subcarrier A+1 of the 5th OFDM symbol, subcarrier (A+10) mod 12, the subcarrier A+4 of the 8th OFDM symbol, subcarrier A+7, the subcarrier A+1 of the 11st OFDM symbol, subcarrier (A+10) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+4 of the 5th OFDM symbol, subcarrier A+7, subcarrier A+4, the subcarrier A+7 of the subcarrier A+2 of the 8th OFDM symbol, 12, the 11 OFDM symbols of subcarrier (A+10) mod;
Wherein, A=0,1.
7. according to each described method of claim 4 to 6, it is characterized in that needing the reference signal of mapping is 3 the tunnel, the reference signal of shining upon on the time-frequency position with the arbitrary road reference signal in described 4 tunnel reference signals of mapping replaces with data.
8. method according to claim 1, it is characterized in that, described multichannel reference signal is 8 the tunnel, described 8 tunnel reference signals are mapped on 4 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the five tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the six tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the seven tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the eight tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
Wherein, A=0; B=1,2;
Method two:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the five tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+4+B, subcarrier (A+8+B) mod 12;
A plurality of reference signals in the six tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+4, subcarrier (A+8) mod 12;
A plurality of reference signals in the seven tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+4 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier (A+8) mod 12;
A plurality of reference signals in the eight tunnel described reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+4+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier (A+8+B) mod 12;
Wherein, A=0; B=1,2;
Method three:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the five tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the six tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the seven tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the eight tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12;
Wherein, A=0; B=1,2;
Method four:
A plurality of reference signals in the described reference signal of the first via are mapped to following time-frequency position: the subcarrier A of first OFDM symbol of described 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the second tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of second OFDM symbol of described 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the described reference signal of Third Road are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the four tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the five tunnel described reference signal are mapped to following time-frequency position: the subcarrier A+B of first OFDM symbol of described 4 OFDM symbols, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12;
A plurality of reference signals in the six tunnel described reference signal are mapped to following time-frequency position: the subcarrier A of second OFDM symbol of described 4 OFDM symbols, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the seven tunnel described reference signal are mapped to following time-frequency position: subcarrier A, the subcarrier A+3 of the 3rd OFDM symbol of described 4 OFDM symbols, subcarrier A+6, subcarrier (A+9) mod 12;
A plurality of reference signals in the eight tunnel described reference signal are mapped to following time-frequency position: subcarrier A+B, the subcarrier A+3+B of the 4th OFDM symbol of described 4 OFDM symbols, subcarrier A+6+B, subcarrier (A+9+B) mod12;
Wherein, A=0; B=1,2.
9. method according to claim 1, it is characterized in that, described multichannel reference signal is 8 the tunnel, described 8 tunnel reference signals is mapped on 2 OFDM symbols of described Physical Resource Block, and the described reference signal in each road is mapped on M the subcarrier on the described OFDM symbol specifically comprises:
A plurality of reference signals in the described reference signal of the first via are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of first OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the second tunnel described reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of second OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the described reference signal of Third Road are mapped to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12 of first OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the four tunnel described reference signal are shone upon described two OFDM symbols second OFDM symbol to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12;
A plurality of reference signals in the five tunnel described reference signal are mapped to subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12 of first OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the six tunnel described reference signal are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of second OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the seven tunnel described reference signal are mapped to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12 of first OFDM symbol of described two OFDM symbols;
A plurality of reference signals in the eight tunnel described reference signal are shone upon described two OFDM symbols second OFDM symbol to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12;
Wherein, A=0.
10. method according to claim 1, it is characterized in that, described long evolving system adopts extended cyclic prefix, described Physical Resource Block comprises 12 OFDM symbols in time domain, described multichannel reference signal is 8 the tunnel, and the described reference signal in each road is mapped to specifically comprises following at least a method on M the subcarrier on the described OFDM symbol:
Method one:
The described reference signal of the first via is mapped to subcarrier 0, subcarrier 4, the subcarrier 8 of the 5th OFDM symbol;
The second tunnel described reference signal is mapped to subcarrier 2, subcarrier 6, the subcarrier 10 of the 12nd OFDM symbol;
The described reference signal of Third Road is mapped to subcarrier 1, subcarrier 5, the subcarrier 9 of the 5th OFDM symbol;
The four tunnel described reference signal is mapped to subcarrier 3, subcarrier 7, the subcarrier 11 of the 12nd OFDM symbol;
The five tunnel described reference signal is mapped to subcarrier 2, subcarrier 6, the subcarrier 10 of the 5th OFDM symbol;
The six tunnel described reference signal is mapped to subcarrier 0, subcarrier 4, the subcarrier 8 of the 12nd OFDM symbol;
The seven tunnel described reference signal is mapped to subcarrier 3, subcarrier 7, the subcarrier 11 of the 5th OFDM symbol;
The eight tunnel described reference signal is mapped to subcarrier 1, subcarrier 5, the subcarrier 9 of the 12nd OFDM symbol;
Method two:
The described reference signal of the first via is mapped to the subcarrier 5 of the subcarrier 0 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 9 of the 11st OFDM symbol;
The second tunnel described reference signal is mapped to the subcarrier 8 of the subcarrier 3 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 0 of the 11st OFDM symbol;
The described reference signal of Third Road is mapped to the subcarrier 6 of the subcarrier 1 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 10 of the 11st OFDM symbol;
The four tunnel described reference signal is mapped to the subcarrier 10 of the subcarrier 4 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 1 of the 11st OFDM symbol;
The five tunnel described reference signal is mapped to the subcarrier 11 of the subcarrier 6 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 3 of the 11st OFDM symbol;
The six tunnel described reference signal is mapped to the subcarrier 2 of the subcarrier 10 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 6 of the 11st OFDM symbol;
The seven tunnel described reference signal is mapped to the subcarrier 0 of the subcarrier 7 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 4 of the 11st OFDM symbol;
The eight tunnel described reference signal is mapped to the subcarrier 3 of the subcarrier 10 of the 5th OFDM symbol, the 8th OFDM symbol, the subcarrier 7 of the 11st OFDM symbol.
11. each described method in 10 is characterized in that according to Claim 8,
Ying She reference signal is 5 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of any 3 tunnel reference signals in described 8 tunnel reference signals that then will shine upon replaces with data;
Ying She reference signal is 6 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of any 2 tunnel reference signals in described 8 tunnel reference signals that then will shine upon replaces with data;
Ying She reference signal is 7 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of the arbitrary road reference signal in described 8 tunnel reference signals that then will shine upon replaces with data.
12. each described method in 10 is characterized in that according to Claim 8,
Ying She reference signal is 5 the tunnel if desired, and the locational reference signal of time-frequency of any 3 tunnel reference signals in described 8 tunnel reference signals that then will shine upon replaces with in the 1 the road to the 4 the tunnel any three tunnel reference signal;
Ying She reference signal is 6 the tunnel if desired, and the locational reference signal of time-frequency of any 2 tunnel reference signals in described 8 tunnel reference signals that then will shine upon replaces with in above-mentioned any three kinds any 2 tunnel reference signal;
Ying She reference signal is 7 the tunnel if desired, and the locational reference signal of time-frequency of any 1 tunnel reference signal in described 8 tunnel reference signals that then will shine upon replaces with in above-mentioned any two kinds any 1 tunnel reference signal.
13. method according to claim 1, it is characterized in that, described long evolving system adopts the regular circulation prefix, described Physical Resource Block comprises 14 OFDM symbols in time domain, one or more described reference signal is mapped on 4 orthogonal frequency division multiplex OFDM symbols of described Physical Resource Block, described 4 OFDM symbols that are mapped with reference signal are:
The the 6th, 7,13,14 OFDM symbol in described 14 OFDM symbols;
Perhaps
The the 5th, 8,9,12 OFDM symbol in described 14 OFDM symbols;
Perhaps
The the 4th, 7,10,13 OFDM symbol in described 14 OFDM symbols;
Perhaps
The the 4th, 7,11,14 OFDM symbol in described 14 OFDM symbols;
Perhaps
The the 4th, 7,10,14 OFDM symbol in described 14 OFDM symbols;
Perhaps
The the 4th, 6,13,14 OFDM symbol in described 14 OFDM symbols.
14. method according to claim 1, it is characterized in that, described long evolving system adopts extended cyclic prefix, described Physical Resource Block comprises 12 OFDM symbols in time domain, one or more described reference signal is mapped on 4 orthogonal frequency division multiplex OFDM symbols of described Physical Resource Block, described 4 OFDM symbols that are mapped with reference signal are:
The the 5th, 6,9,11 OFDM symbol in described 12 OFDM symbols;
Perhaps
The the 5th, 6,11,12 OFDM symbol in described 12 OFDM symbols;
Perhaps
The the 4th, 7,8,10 OFDM symbol in described 12 OFDM symbols;
Perhaps
The the 5th, 6,8,9 OFDM symbol in described 12 OFDM symbols.
15. according to claim 13 or 14 described methods, it is characterized in that the ascending arrangement of time-domain position coordinate or the descending arrangement of described first OFDM symbol, described second OFDM symbol, described the 3rd OFDM symbol and described the 4th OFDM symbol.
16. method according to claim 1, it is characterized in that, described long evolving system adopts the regular circulation prefix, described Physical Resource Block comprises 14 OFDM symbols in time domain, one or more described reference signal is mapped on 2 orthogonal frequency division multiplex OFDM symbols of described Physical Resource Block, described 2 OFDM symbols that are mapped with reference signal are:
The 4th OFDM symbol and the 14th OFDM symbol in described 14 OFDM symbols; Perhaps
The 4th OFDM symbol and the 13rd OFDM symbol in described 14 OFDM symbols; Perhaps
The 6th OFDM symbol and the 14th OFDM symbol in described 14 OFDM symbols; Perhaps
The 6th OFDM symbol and the 13rd OFDM symbol in described 14 OFDM symbols; Perhaps
The 6th OFDM symbol and the 11st OFDM symbol in described 14 OFDM symbols; Perhaps
The 10th OFDM symbol and the 11st OFDM symbol in described 14 OFDM symbols.
17. method according to claim 1, it is characterized in that, described long evolving system adopts extended cyclic prefix, described Physical Resource Block comprises 12 OFDM symbols in time domain, one or more described reference signal is mapped on 2 orthogonal frequency division multiplex OFDM symbols of described Physical Resource Block, described 2 OFDM symbols that are mapped with reference signal are:
The 5th OFDM symbol and the 12nd OFDM symbol in described 12 OFDM symbols; Perhaps
The 5th OFDM symbol and the 9th OFDM symbol in described 12 OFDM symbols; Perhaps
The 5th OFDM symbol and the 11st OFDM symbol in described 12 OFDM symbols; Perhaps
The 8th OFDM symbol and the 9th OFDM symbol in described 12 OFDM symbols.
18., it is characterized in that described reference signal is meant the reference signal based on layer according to each described method in the claim 1 to 17.
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