CN101510868A - Method for mapping reference signal and physical resource block - Google Patents

Method for mapping reference signal and physical resource block Download PDF

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Publication number
CN101510868A
CN101510868A CNA200910129605XA CN200910129605A CN101510868A CN 101510868 A CN101510868 A CN 101510868A CN A200910129605X A CNA200910129605X A CN A200910129605XA CN 200910129605 A CN200910129605 A CN 200910129605A CN 101510868 A CN101510868 A CN 101510868A
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ofdm symbol
subcarrier
reference signal
mapped
ofdm
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戴博
罗宇民
郁光辉
陈艺戬
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a mapping method of reference signals and a physical resource block; the method comprises the steps: one or more paths of reference signals are mapped to N orthogonal frequency division multiplexing signals (OFDM signals) of the physical resource block, wherein N refers to one of the following numbers: 3, 4 and 6; with respect to the reference signals mapped into the same time domain, the frequency domain interval of the reference signals belonging to the same path is set as M sub-carriers, wherein M refers to one of the following numbers: 3, 4, 6 and 12. With the technical proposal, the positions of various reference signals on the basis of layers in the physical resource block are determined, thereby filling the blank of the prior art. With the mapping proposal of the reference signals to the physical blocks, the overall performance of the system can be improved.

Description

The mapping method of reference signal and Physical Resource Block
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
OFDM (Orthogonal Frequency Division Multiplexing abbreviates OFDM as) is one of core technology in the 4th third-generation mobile communication, and the OFDM technological essence is a kind of multi-carrier modulation communication technology.
In the OFDM technology, multipath channel on its frequency domain presents the characteristic of frequency selective fading, in order to overcome this decline, the OFDM channel is divided into a plurality of subchannels on frequency domain, the spectral characteristic of each subchannel is near flat all, and orthogonal mutually between the subchannel, like this, just allow the frequency spectrum of subchannel overlapped, can very big limit land productivity frequency spectrum resource.
Many input and output (Multiple Input Multiple Output, abbreviating MIMO as) technology can increase power system capacity, improve transmission performance, and can merge mutually with the technology of other physical layer, therefore become the key technology of B3G and the 4th third-generation mobile communication system.But when channel relevancy was strong, the diversity gain and the spatial multiplexing gain that are brought by multipath channel can reduce greatly, cause declining to a great extent of mimo system performance.Like this, propose a kind of MIMO method for precoding, it is a kind of multiplex mode of MIMO efficiently.This method is divided into a plurality of independently pseudo channels by the precoding processing of sending and receiving end with mimo channel, can eliminate the influence of channel relevancy effectively, has guaranteed the stability of mimo system under various environment.
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 the publicly-owned reference signal in sub-district (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 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.
In addition, LTE-Advanced should satisfy the frequency spectrum configuration of different sizes, for example, and in frequency spectrum configuration (for example continuous frequency spectrum resource of 100MHz) the down work wideer, to reach higher performance and target peak speed than LTE Release-8.Because the LTE-Advanced network needs to insert LTE user, so its operational frequency bands need cover the LTE frequency band, but the spectral bandwidth that does not have assignable continuous 100MHz on this frequency range, so the problem that LTE-Advanced need solve is that several continuous component carrier frequency (frequency spectrum) (Component carrier) polymerizations that are distributed on the different frequency range are got up to form the operable 100MHz bandwidth of LTE-Advanced.That is, the frequency spectrum for after assembling is divided into n component carrier frequency (Component carrier) (frequency spectrum), and the frequency spectrum in each component carrier frequency (frequency spectrum) is continuous.
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.
Yet, propose at present to realize resource mapping scheme as yet based on the reference signal of layer.
Summary of the invention
Consider exist in the correlation technique owing to lacking the problem that can realize the present invention is proposed based on the resource block mapping scheme of the reference signal of layer, for this reason, main purpose of the present invention is to provide the mapping method and the device of a kind of reference signal and Physical Resource Block, to address the above problem.
According to an aspect of the present invention, the mapping method of a kind of reference signal and Physical Resource Block is provided, this method is mainly used in one or more reference signal is mapped on the Physical Resource Block, wherein, Physical Resource Block comprises two continuous slots of time domain equal in length, and Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal includes a plurality of reference signals.
Mapping method according to reference signal of the present invention and Physical Resource Block comprises: N the OFDM symbol that one or more reference signal is mapped to Physical Resource Block is on the OFDM symbol, and wherein, the value of N is one of following: 3,4,6; For the reference signal that is mapped to same time domain, the frequency domain interval of same road reference signal is set to M subcarrier, and wherein, the value of M is one of following: 3,4,6,12.
By above-mentioned at least one technical scheme of the present invention, by the clear and definite position of each reference signal in Physical Resource Block based on layer, filled up the blank of prior art,, can improve the overall performance of system by the resource block mapping scheme of reference signal of the present invention.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the 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 the publicly-owned reference signal in sub-district position in Physical Resource Block in the LTE system of correlation technique;
Fig. 3 is the flow chart according to the mapping method of the reference signal of the inventive method embodiment and Physical Resource Block;
Fig. 4 is the schematic diagram of reference signal position of the example 1 of method shown in Figure 3;
Fig. 5 is the schematic diagram of reference signal position of the example 2 of method shown in Figure 3;
Fig. 6 is the schematic diagram of reference signal position of the example 3 of method shown in Figure 3;
Fig. 7 is the schematic diagram of reference signal position of the example 4 of method shown in Figure 3;
Fig. 8 is the schematic diagram of reference signal position of the example 5 of method shown in Figure 3;
Fig. 9 is the schematic diagram of reference signal position of the example 6 of method shown in Figure 3;
Figure 10 is another schematic diagram of reference signal position of the example 6 of method shown in Figure 3;
Figure 11 is the schematic diagram of reference signal position of the example 7 of method shown in Figure 3.
Embodiment
Functional overview
At present, the mapping scheme of reference signal or based on the publicly-owned reference signal in the sub-district of antenna port, or based on one deck or two-layer 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. 3 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. 3, 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. 3 with the form of step.Though figure 3 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 3, this method is used for one or more reference signal is mapped to Physical Resource Block, wherein, Physical Resource Block comprises two continuous slots of time domain equal in length, and this Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal includes a plurality of reference signals, particularly, may further comprise the steps (step S302 is to step S304).
Step S302, N the OFDM symbol that one or more reference signal is mapped to Physical Resource Block is on the OFDM symbol, and wherein, the value of N is one of following: 3,4,6, and this reference signal can be carried on the time-frequency domain position at the proprietary Physical Shared Channel place of user;
Step S304, for the reference signal that is mapped to same time domain, the frequency domain interval of same road reference signal is set to M subcarrier, wherein, the value of M be following one of at least: 3,4,6,12, and each layer reference signal determined by cell ID at the initial position of frequency domain.
In specific implementation process, when one tunnel reference signal is shone upon, Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbols in time domain, if when system adopted the regular circulation prefix, then concrete operations were: a plurality of reference signals in one tunnel reference signal are mapped on the following time-frequency position of Physical Resource Block: A subcarrier of the 4th OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, (A+8) individual subcarrier of the 4th OFDM symbol, (A+2) individual subcarrier of the 7th OFDM symbol, (A+6) individual subcarrier of the 7th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 7th OFDM symbol, A subcarrier of the 10th OFDM symbol, (A+4) individual subcarrier of the 10th OFDM symbol, (A+8) individual subcarrier of the 10th OFDM symbol, (A+2) individual subcarrier of the 13rd OFDM symbol, (A+6) individual subcarrier of the 13rd OFDM symbol, 13+1 subcarrier of (A+10) mod of the 13rd OFDM symbol; Wherein, A=1,2,3,4; When if system adopts extended cyclic prefix, Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 12 OFDM symbols in time domain, then concrete operations are: a plurality of reference signals in one tunnel reference signal are mapped on the following time-frequency position of Physical Resource Block: A subcarrier of the 5th OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol, (A+2) individual subcarrier of the 8th OFDM symbol, (A+5) individual subcarrier of the 8th OFDM symbol, (A+8) individual subcarrier of the 8th OFDM symbol, (A+11) mod13+1 subcarrier of the 8th OFDM symbol, A subcarrier of the 11st OFDM symbol, (A+3) individual subcarrier of the 11st OFDM symbol, (A+6) individual subcarrier of the 11st OFDM symbol, 13+1 subcarrier of (A+9) mod of the 11st OFDM symbol; Wherein, A=1,2,3,4.
If the multichannel reference signal is 2 the tunnel, and this 2 tunnel reference signal is mapped to 4 OFDM symbols of Physical Resource Block, then comprises following two kinds of processing modes:
Processing mode 1: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+2) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+4) individual subcarrier of first OFDM symbol, (A+8) individual subcarrier of first OFDM symbol, 4 OFDM symbols, (A+6) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+2) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of 4 OFDM symbols, (A+4) individual subcarrier of second OFDM symbol, (A+8) individual subcarrier of second OFDM symbol, 4 OFDM symbols, (A+6) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 4th OFDM symbol; Wherein, A=1,2,3,4.
Processing mode 2: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+3) individual subcarrier of first OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, (A+2) individual subcarrier of the 3rd OFDM symbol of 4 OFDM symbols, (A+5) individual subcarrier of the 3rd OFDM symbol, (A+8) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+11) mod of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: A subcarrier of second OFDM symbol of 4 OFDM symbols, (A+3) individual subcarrier of second OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, (A+9) individual subcarrier of second OFDM symbol, (A+2) individual subcarrier of the 4th OFDM symbol of 4 OFDM symbols, (A+5) individual subcarrier of the 4th OFDM symbol, (A+8) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+11) mod of the 4th OFDM symbol; Wherein, A=1,2,3,4.
If the multichannel reference signal is 4 the tunnel, and this 4 tunnel reference signal is mapped to 4 OFDM symbols of Physical Resource Block, then comprises following two kinds of processing modes:
Processing mode 1: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbolic point of 4 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 3rd OFDM symbol, (A+6) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 2: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 3rd OFDM symbol, (A+6) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
When the multichannel reference signal was 4 the tunnel, Ying She reference signal was 3 the tunnel if desired, and the reference signal of shining upon on the time-frequency position of the arbitrary road reference signal in 4 tunnel reference signals that then will shine upon replaces with data.
If the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 4 OFDM symbols of Physical Resource Block, then comprises following 4 kinds of processing modes:
Processing mode 1: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 3rd OFDM symbol, (A+6) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+7) mod of first OFDM symbol, (A+4) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of the 3rd OFDM symbol; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+7) mod of second OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+10) mod of first OFDM symbol, 13+1 subcarrier of (A+7) mod of the 3rd OFDM symbol, (A+1) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+10) mod of second OFDM symbol, 13+1 subcarrier of (A+7) mod of the 4th OFDM symbol, (A+1) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 2: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, 4 OFDM symbols, (A+9) mod13+1 subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 3rd OFDM symbol, (A+6) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of 4 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+7) mod of first OFDM symbol, (A+4) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of the 3rd OFDM symbol; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+10) mod of first OFDM symbol, (A+1) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+7) mod of the 3rd OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+7) mod of second OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+10) mod of second OFDM symbol, (A+1) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+7) mod of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 3: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of 4 OFDM symbols, 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: (A+6) individual subcarrier of A subcarrier of second OFDM symbol of 4 OFDM symbols, 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: (A+6) individual subcarrier of first OFDM symbol, A subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of second OFDM symbol, A subcarrier of the 4th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+9) mod13+1 subcarrier of first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 4: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of 4 OFDM symbols, 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: (A+6) individual subcarrier of first OFDM symbol, A subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: 13+112 subcarrier of (A+9) mod of first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of second OFDM symbol of 4 OFDM symbols, the 4th OFDM symbol of 4 OFDM symbols; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of second OFDM symbol, A subcarrier of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol; Wherein, A=0,1,2,3,4,5.
If the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 6 OFDM symbols of Physical Resource Block, then comprises following 4 kinds of processing modes:
Processing mode 1: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of the 3rd OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 6th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol, A subcarrier of the 6th OFDM symbol, (A+6) individual subcarrier of the 6th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: A subcarrier of first OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+7) mod of first OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+10) mod of first OFDM symbol, 13+1 subcarrier of (A+7) mod of the 4th OFDM symbol, (A+1) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 2: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of the 3rd OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 6th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol, A subcarrier of the 6th OFDM symbol, (A+6) individual subcarrier of the 6th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of first OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of first OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of first OFDM symbol, A subcarrier of the 4th OFDM symbol, (A+6) individual subcarrier of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+7) mod of first OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+10) mod of first OFDM symbol, 13+1 subcarrier of (A+7) mod of the 4th OFDM symbol, (A+1) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 3: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of the 3rd OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 6th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol, A subcarrier of the 6th OFDM symbol, (A+6) individual subcarrier of the 6th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of 6 OFDM symbols, the 4th OFDM symbol of 6 OFDM symbols; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of first OFDM symbol, A subcarrier of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
Processing mode 4: a plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of second OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol; A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of second OFDM symbol, 13+1 subcarrier of (A+9) mod of second OFDM symbol, A subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol; A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of 6 OFDM symbols, (A+6) individual subcarrier of the 3rd OFDM symbol, 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of the 6th OFDM symbol; A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of the 3rd OFDM symbol, A subcarrier of the 6th OFDM symbol, (A+6) individual subcarrier of the 6th OFDM symbol; A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of 6 OFDM symbols, the 4th OFDM symbol of 6 OFDM symbols; A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of first OFDM symbol, A subcarrier of the 4th OFDM symbol; A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of first OFDM symbol, 13+1 subcarrier of (A+9) mod of the 4th OFDM symbol; A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+10) mod of first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol; Wherein, A=1,2,3,4,5,6.
When the multichannel reference signal was 8 the tunnel, Ying She reference signal was 5 the tunnel if desired, and 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.
Preferably, when adopting the regular circulation prefix in system, the OFDM symbol that is mapped with reference signal is in 14 OFDM symbols of Physical Resource Block the 4th, 6,7,11,13,14 OFDM symbols; Perhaps, in 14 OFDM symbols of Physical Resource Block the 4th, 6,7,10,11,13 OFDM symbols; When system adopted extended cyclic prefix, the OFDM symbol that is mapped with reference signal was in 12 OFDM symbols of Physical Resource Block the 4th, 5,6,10,11,12 OFDM symbols; Perhaps, in 12 OFDM symbols of Physical Resource Block the 5th, 6,8,9,11,12 OFDM symbols.
And, the ascending arrangement of time-domain position coordinate or the descending arrangement of above-mentioned first OFDM symbol, second OFDM symbol, the 3rd OFDM symbol, the 4th OFDM symbol, the 5th OFDM symbol and the 6th OFDM symbol.
Preferably, when adopting the regular circulation prefix in system, the OFDM symbol that is mapped with reference signal is: the 6th, 7,13,14 OFDM symbol in 14 OFDM symbols of Physical Resource Block; Perhaps, the 5th, 8,9,12 OFDM symbol in 14 of Physical Resource Block OFDM symbols; Perhaps, the 4th, 7,10,13 OFDM symbol in 14 of Physical Resource Block OFDM symbols.
Preferably, when adopting extended cyclic prefix in system, the OFDM symbol that is mapped with reference signal is: the 5th, 6,9,11 OFDM symbol in 12 OFDM symbols of Physical Resource Block; Perhaps, the 5th, 6,11,12 OFDM symbol in 12 of Physical Resource Block OFDM symbols; Perhaps, the 4th, 7,8,10 OFDM symbol in 12 of Physical Resource Block OFDM symbols; Perhaps, the 5th, 6,8,9 OFDM symbol in 12 of Physical Resource Block OFDM symbols.
And, the ascending arrangement of time-domain position coordinate or the descending arrangement of above-mentioned first OFDM symbol, second OFDM symbol, the 3rd OFDM symbol and the 4th OFDM symbol.
Need to prove, be directed to same road reference signal, frequency domain interval among the present invention is: be not mapped with between adjacent two reference signals of the frequency domain position that shines upon on the same OFDM symbol this road reference signal resource element quantity and 1 and, that is to say, have between two adjacent reference signals of frequency domain position on the identical time domain under the situation of resource element that n is not mapped with this road reference signal, the value of M is (n+1).For example, in the mapping pattern shown in Fig. 2 a, a plurality of reference signal (T of first via reference signal 1) frequency domain interval on same time domain is 6, computational methods are: for example, on first OFDM symbol, adjacent reference signal T 1Be mapped on first subcarrier and the 7th subcarrier at frequency domain, have 5 resource elements that are not mapped with first via reference signal between these two reference signals, then on first OFDM symbol, adjacent reference signal T 1Frequency domain interval be 5+1=6.
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, can improve the overall performance of system.
Be elaborated below in conjunction with example 1 to 8 pairs of methods shown in Figure 3 of example, at example 1 to example 8, the frequency domain position of the reference signal of each antenna logic port can change along with the variation of cell ID, but the relativeness between the reference signal of each antenna logic port remains unchanged.
Should illustrate, in this article, first via reference signal is corresponding to the reference signal #0 of layer 1, the second tunnel reference signal is corresponding to the reference signal #1 of layer 2, the Third Road reference signal is corresponding to the reference signal #2 of layer 3, the four tunnel 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.
And, in Fig. 4 to Figure 11, 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 addition, hereinafter in the multiple mapping mode of Miao Shuing, the mapping pattern of shining upon the reference signal of any number of plies in 1,2,3,4,5,6,7,8 in Physical Resource Block has been described, the present invention can define corresponding mapped mode according to the number of plies of the reference signal of shining upon, preferably, can adopt following three kinds of modes to define mapped mode:
Mode one: the mapping mode under each number of plies all can corresponding a kind of mapped mode, the number of plies of reference signal is 8 layers, then can define 8 kinds of mapped modes, for example, can define mapped mode 1 is 1 mapping pattern corresponding to the reference signal number of plies of mapping, similarly, can also define mapped mode 2 is 2 mapping pattern corresponding to the reference signal number of plies of mapping, and the rest may be inferred.
Mode two: define 3 kinds of mapped modes, for example, can define mapped mode 1 is 1 mapping pattern corresponding to the reference signal number of plies of mapping, mapped mode 2 is 2 mapping pattern corresponding to the reference signal number of plies of mapping, and mapped mode 3 is 3,4,5,6,7,8 mapping pattern corresponding to the reference signal number of plies of mapping.
Mode three: define 4 kinds of mapped modes, for example, can define mapped mode 1 is 1 mapping pattern corresponding to the reference signal number of plies of mapping, mapped mode 2 is 2 mapping pattern corresponding to the reference signal number of plies of shining upon, mapped mode 3 is 3,4 mapping pattern corresponding to the reference signal number of plies of mapping, and mapped mode 4 is 5,6,7,8 mapping pattern corresponding to the reference signal number of plies of mapping.
Example 1
This case description the mapping of the Physical Resource Block of transmission one deck reference signal in subframe, i.e. k=1.
When Fig. 4 a is subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block (promptly, the mapping pattern of reference signal during k=1), shown in Fig. 4 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=1.
The reference signal #0 of layer 1 is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 4th OFDM symbol (promptly, be mapped on the 1st subcarrier of the 4th symbol of first time slot in the subframe), the 5th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 5th subcarrier of the 4th symbol of first time slot in the subframe), the 9th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 9th subcarrier of the 4th symbol of first time slot in the subframe), the 3rd subcarrier of the 7th OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 11st subcarrier of the 7th OFDM symbol (promptly, be mapped on the 11st subcarrier of last symbol of first time slot in the subframe), the 1st subcarrier of the 10th OFDM symbol (promptly, be mapped on the 1st subcarrier of the 3rd symbol of second time slot in the subframe), the 5th subcarrier of the 10th OFDM symbol (promptly, be mapped on the 5th subcarrier of the 3rd symbol of second time slot in the subframe), the 9th subcarrier of the 10th OFDM symbol (promptly, be mapped on the 9th subcarrier of the 3rd symbol of second time slot in the subframe), the 3rd subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 3rd subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of second time slot in the subframe), the 11st subcarrier of the 13rd OFDM symbol (that is, being mapped on the 11st subcarrier of penult symbol of second time slot in the subframe).
Fig. 4 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.
Reference signal #0 is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol (promptly, be mapped on the 1st subcarrier of the 5th symbol of first time slot in the subframe), the 4th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 4th subcarrier of the 5th symbol of first time slot in the subframe), the 7th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 7th subcarrier of the 5th symbol of first time slot in the subframe), the 10th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 10th subcarrier of second symbol of second time slot in the subframe), the 3rd subcarrier of the 8th OFDM symbol (promptly, be mapped on the 3rd subcarrier of second symbol of second time slot in the subframe), the 6th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 6th subcarrier of second symbol of second time slot in the subframe), the 9th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 9th subcarrier of second symbol of second time slot in the subframe), the 12nd subcarrier of the 8th OFDM symbol (promptly, be mapped on the 12nd subcarrier of second symbol of second time slot in the subframe), the 1st subcarrier of the 11st OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of second time slot in the subframe), the 4th subcarrier of the 11st OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 11st OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of second time slot in the subframe), the 10th subcarrier of the 11st OFDM symbol (that is, being mapped on the 10th subcarrier of penult symbol of second time slot in the subframe).
The pattern schematic diagram of the reference signal when example 1 has provided k=1 has been 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 2
This case description the mapping of the Physical Resource Block of the two-layer reference signal of transmission in subframe, i.e. k=2.
When Fig. 5 a and Fig. 5 b are subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 5 a and Fig. 5 b, comprise the reference signal #0 of layer 1 and 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. 5 a the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, #0 and 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. 5 a, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 4th OFDM symbol (promptly, this first reference signal is mapped on the 1st subcarrier of the 4th symbol of first time slot in the subframe), the 5th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 5th subcarrier of the 4th symbol of first time slot in the subframe), the 9th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 9th subcarrier of the 4th symbol of first time slot in the subframe), the 3rd subcarrier of the 10th OFDM symbol (promptly, be mapped on the 3rd subcarrier of the 3rd symbol of second time slot in the subframe), the 7th subcarrier of the 10th OFDM symbol (promptly, be mapped on the 7th subcarrier of the 3rd symbol of second time slot in the subframe), the 11st subcarrier of the 10th OFDM symbol (that is, being mapped on the 11st subcarrier of the 3rd symbol of second time slot in the subframe);
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 3rd subcarrier of the 7th OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 11st subcarrier of the 7th OFDM symbol (promptly, be mapped on the 11st subcarrier of last symbol of first time slot in the subframe), the 1st subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of second time slot in the subframe), the 5th subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 5th subcarrier of penult symbol of second time slot in the subframe), the 9th subcarrier of the 13rd OFDM symbol (that is, being mapped on the 9th subcarrier of penult symbol of second time slot in the subframe).
Below in conjunction with Fig. 5 b the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, this reference signal #0 and reference signal #1 are mapped in 14 OFDM symbols of Physical Resource Block on the 6th, 7,13,14 the OFDM symbol, promptly, first OFDM symbol above is corresponding to the 6th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, the 3rd OFDM symbol is corresponding to the 13rd OFDM symbol, the 4th OFDM symbol is corresponding to the 14th OFDM symbol, shown in Fig. 5 b, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol (promptly, this first reference signal is mapped on the 1st subcarrier of penult symbol of first time slot in the subframe), the 5th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 5th subcarrier of penult symbol of first time slot in the subframe), the 9th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 9th subcarrier of penult symbol of first time slot in the subframe), the 3rd subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 3rd subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of second time slot in the subframe), the 11st subcarrier of the 13rd OFDM symbol (that is, being mapped on the 11st subcarrier of penult symbol of second time slot in the subframe);
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of first time slot in the subframe), the 5th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 5th subcarrier of last symbol of first time slot in the subframe), the 9th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 9th subcarrier of last symbol of first time slot in the subframe), the 3rd subcarrier of the 14th OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of second time slot in the subframe), the 7th subcarrier of the 14th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of second time slot in the subframe), the 11st subcarrier of the 14th OFDM symbol (that is, being mapped on the 11st subcarrier of last symbol of second time slot in the subframe).
When Fig. 5 c and Fig. 5 d are subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 5 c and Fig. 5 d, comprise the reference signal #0 of layer 1 and 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. 5 c the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, this reference signal #0 and reference signal #1 are mapped in 12 OFDM symbols of Physical Resource Block on the 5th, 6,8,12 the OFDM symbol, 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 8th OFDM symbol, the 4th OFDM symbol is corresponding to the 12nd OFDM symbol, shown in Fig. 5 c, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of first time slot in the subframe), the 4th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of first time slot in the subframe), the 7th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of first time slot in the subframe), the 10th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 10th subcarrier of penult symbol of first time slot in the subframe), the 3rd subcarrier of the 8th OFDM symbol (promptly, be mapped on the 3rd subcarrier of second symbol of second time slot in the subframe), the 6th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 6th subcarrier of second symbol of second time slot in the subframe), the 9th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 9th subcarrier of second symbol of second time slot in the subframe), the 11st subcarrier of the 8th OFDM symbol (that is, being mapped on the 11st subcarrier of second symbol of second time slot in the subframe).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of first time slot in the subframe), the 4th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 10th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 10th subcarrier of last symbol of first time slot in the subframe), the 3rd subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of second time slot in the subframe), the 6th subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 6th subcarrier of last symbol of second time slot in the subframe), the 9th subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 9th subcarrier of last symbol of second time slot in the subframe), the 12nd subcarrier of the 12nd OFDM symbol (that is, being mapped on the 12nd subcarrier of last symbol of second time slot in the subframe).
Below in conjunction with Fig. 5 d the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, this reference signal #0 and reference signal #1 are mapped in 12 OFDM symbols of Physical Resource Block on the 5th, 6,11,12 the OFDM symbol, 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. 5 d, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of first time slot in the subframe), the 5th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 5th subcarrier of penult symbol of first time slot in the subframe), the 9th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 9th subcarrier of penult symbol of first time slot in the subframe), the 3rd subcarrier of the 11st OFDM symbol (promptly, be mapped on the 3rd subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 11st OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of second time slot in the subframe), the 11st subcarrier of the 11st OFDM symbol (that is, being mapped on the 11st subcarrier of penult symbol of second time slot in the subframe).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 3rd subcarrier of the 6th OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of first time slot in the subframe), the 5th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 5th subcarrier of last symbol of first time slot in the subframe), the 9th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 9th subcarrier of last symbol of first time slot in the subframe), the 3rd subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 3rd subcarrier of last symbol of second time slot in the subframe), the 7th subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of second time slot in the subframe), the 11st subcarrier of the 12nd OFDM symbol (that is, being mapped on the 11st subcarrier of last symbol of second time slot in the subframe).
The pattern schematic diagram of the reference signal when example 2 has provided k=2 has been 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, i.e. k=4.
Divide three kinds of situations that this example is described below.
Situation one:
When Fig. 6 a is subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 a, the reference signal #0, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and 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. 6 a the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, reference signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 14 OFDM symbols of Physical Resource Block on the 6th, 7,13,14 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 first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of first time slot in the subframe), the 7th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of first time slot in the subframe), the 4th subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of second time slot in the subframe), the 10th subcarrier of the 13rd OFDM symbol (that is, being mapped on the 10th subcarrier of penult symbol of second time slot in the subframe);
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 4th subcarrier of the 14th OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of second time slot in the subframe), the 10th subcarrier of the 14th OFDM symbol (that is, being mapped on the 10th subcarrier of last symbol of second time slot in the subframe);
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of first time slot in the subframe), the 10th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 10th subcarrier of penult symbol of first time slot in the subframe), the 1st subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 13rd OFDM symbol (that is, being mapped on the 7th subcarrier of penult symbol of second time slot in the subframe);
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of first time slot in the subframe), the 10th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 10th subcarrier of last symbol of first time slot in the subframe), the 1st subcarrier of the 14th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of second time slot in the subframe), the 7th subcarrier of the 14th OFDM symbol (that is, being mapped on the 7th subcarrier of last symbol of second time slot in the subframe).
When Fig. 6 b is subframe employing extended cyclic prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 b, the reference signal #0, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and 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. 6 b the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, reference signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 12 OFDM symbols of Physical Resource Block on the 5th, 6,11,12 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 b, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of first time slot in the subframe), the 7th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 7th subcarrier of penult symbol of first time slot in the subframe), the 4th subcarrier of the 11st OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of second time slot in the subframe), the 10th subcarrier of the 11st OFDM symbol (that is, being mapped on the 10th subcarrier of penult symbol of second time slot in the subframe);
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 4th subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of second time slot in the subframe), the 10th subcarrier of the 12nd OFDM symbol (that is, being mapped on the 10th subcarrier of last symbol of second time slot in the subframe);
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of first time slot in the subframe), the 10th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 10th subcarrier of penult symbol of first time slot in the subframe), the 1st subcarrier of the 11st OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 11st OFDM symbol (that is, being mapped on the 7th subcarrier of penult symbol of second time slot in the subframe);
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of first time slot in the subframe), the 10th subcarrier of the 6th OFDM symbol (promptly, be mapped on the 10th subcarrier of last symbol of first time slot in the subframe), the 1st subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of second time slot in the subframe), the 7th subcarrier of the 12nd OFDM symbol (that is, being mapped on the 7th subcarrier of last symbol of second time slot in the subframe).
Situation two
When Fig. 6 c is subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 c, the reference signal #0, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and 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. 6 c the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, reference signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 14 OFDM symbols of Physical Resource Block on the 5th, 8,9,12 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 c, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 2nd subcarrier of the 5th OFDM symbol (promptly, be mapped on the 2nd subcarrier of third from the bottom symbol of first time slot in the subframe), the 8th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 8th subcarrier of third from the bottom symbol of first time slot in the subframe), the 5th subcarrier of the 9th OFDM symbol (promptly, be mapped on the 5th subcarrier of second symbol of second time slot in the subframe), the 11st subcarrier of the 9th OFDM symbol (that is, being mapped on the 11st subcarrier of second symbol of second time slot in the subframe).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 2nd subcarrier of the 8th OFDM symbol (promptly, be mapped on the 2nd subcarrier of first symbol of second time slot in the subframe), the 8th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 8th subcarrier of first symbol of second time slot in the subframe), the 5th subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 5th subcarrier of third from the bottom symbol of second time slot in the subframe), the 11st subcarrier of the 12nd OFDM symbol (that is, being mapped on the 11st subcarrier of third from the bottom symbol of second time slot in the subframe).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th subcarrier of the 5th OFDM symbol (promptly, be mapped on the 5th subcarrier of third from the bottom symbol of first time slot in the subframe), the 11st subcarrier of the 5th OFDM symbol (promptly, be mapped on the 11st subcarrier of third from the bottom symbol of first time slot in the subframe), the 2nd subcarrier of the 9th OFDM symbol (promptly, be mapped on the 2nd subcarrier of second symbol of second time slot in the subframe), the 8th subcarrier of the 9th OFDM symbol (that is, being mapped on the 8th subcarrier of second symbol of second time slot in the subframe).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 5th subcarrier of first symbol of second time slot in the subframe), the 10th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 10th subcarrier of first symbol of second time slot in the subframe), the 2nd subcarrier of the 12nd OFDM symbol (promptly, be mapped on the 2nd subcarrier of third from the bottom symbol of second time slot in the subframe), the 8th subcarrier of the 12nd OFDM symbol (that is, being mapped on the 8th subcarrier of third from the bottom symbol of second time slot in the subframe).
When Fig. 6 d is subframe employing extended cyclic prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 d, the reference signal #0, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and 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. 6 d the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, reference signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 12 OFDM symbols of Physical Resource Block on the 4th, 7,8,10 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 d, comprise following processing:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 2nd subcarrier of the 4th OFDM symbol (promptly, be mapped on the 2nd subcarrier of third from the bottom symbol of first time slot in the subframe), the 8th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 8th subcarrier of third from the bottom symbol of first time slot in the subframe), the 5th subcarrier of the 8th OFDM symbol (promptly, be mapped on the 5th subcarrier of second symbol of second time slot in the subframe), the 11st subcarrier of the 8th OFDM symbol (that is, being mapped on the 11st subcarrier of second symbol of second time slot in the subframe).
The second tunnel reference signal is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 2nd subcarrier of the 7th OFDM symbol (promptly, be mapped on the 2nd subcarrier of first symbol of second time slot in the subframe), the 8th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 8th subcarrier of first symbol of second time slot in the subframe), the 5th subcarrier of the 10th OFDM symbol (promptly, be mapped on the 5th subcarrier of third from the bottom symbol of second time slot in the subframe), the 11st subcarrier of the 10th OFDM symbol (that is, being mapped on the 11st subcarrier of third from the bottom symbol of second time slot in the subframe).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 5th subcarrier of third from the bottom symbol of first time slot in the subframe), the 11st subcarrier of the 4th OFDM symbol (promptly, be mapped on the 11st subcarrier of third from the bottom symbol of first time slot in the subframe), the 2nd subcarrier of the 8th OFDM symbol (promptly, be mapped on the 2nd subcarrier of second symbol of second time slot in the subframe), the 8th subcarrier of the 8th OFDM symbol (that is, being mapped on the 8th subcarrier of second symbol of second time slot in the subframe).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 5th subcarrier of first symbol of second time slot in the subframe), the 10th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 10th subcarrier of first symbol of second time slot in the subframe), the 2nd subcarrier of the 10th OFDM symbol (promptly, be mapped on the 2nd subcarrier of third from the bottom symbol of second time slot in the subframe), the 8th subcarrier of the 10th OFDM symbol (that is, being mapped on the 8th subcarrier of third from the bottom symbol of second time slot in the subframe).
Situation three
When Fig. 6 e is subframe employing regular circulation prefix, the situation schematic diagram of reference signal in Physical Resource Block, shown in Fig. 6 e, the reference signal #0, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and 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. 6 e the Physical Resource Block mapping of reference signal #0 and reference signal #1 is described, reference signal #0, reference signal #1, reference signal #2 and reference signal #3 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 e, comprise following processing:
The following time-frequency position that first via reference signal is mapped to above-mentioned Physical Resource Block (promptly, reference signal #0) (A=1): the 1st subcarrier of the 4th OFDM symbol (promptly, be mapped on the 1st subcarrier of the 4th symbol of first time slot in the subframe), the 7th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 7th subcarrier of the 4th symbol of first time slot in the subframe), the 4th subcarrier of the 10th OFDM symbol (promptly, be mapped on the 4th subcarrier of the 3rd symbol of second time slot in the subframe), the 10th subcarrier of the 10th OFDM symbol (that is, being mapped on the 10th subcarrier of the 3rd symbol of second time slot in the subframe).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol (promptly, be mapped on the 1st subcarrier of last symbol of first time slot in the subframe), the 7th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 7th subcarrier of last symbol of first time slot in the subframe), the 4th subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 4th subcarrier of penult symbol of second time slot in the subframe), the 10th subcarrier of the 13rd OFDM symbol (that is, being mapped on the 10th subcarrier of penult symbol of second time slot in the subframe).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 4th subcarrier of the 4th symbol of first time slot in the subframe), the 10th subcarrier of the 4th OFDM symbol (promptly, be mapped on the 10th subcarrier of the 4th symbol of first time slot in the subframe), the 1st subcarrier of the 10th OFDM symbol (promptly, be mapped on the 1st subcarrier of the 3rd symbol of second time slot in the subframe), the 7th subcarrier of the 10th OFDM symbol (that is, being mapped on the 7th subcarrier of the 3rd symbol of second time slot in the subframe).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 4th subcarrier of last symbol of first time slot in the subframe), the 10th subcarrier of the 7th OFDM symbol (promptly, be mapped on the 10th subcarrier of last symbol of first time slot in the subframe), the 1st subcarrier of the 13rd OFDM symbol (promptly, be mapped on the 1st subcarrier of penult symbol of second time slot in the subframe), the 7th subcarrier of the 13rd OFDM symbol (that is, being mapped on the 7th subcarrier of penult symbol of second time slot in the subframe).
Alternatively, in example 3 described mapping process, any 1 tunnel (any 1 layer) reference signal of shining upon in the Physical Resource Block can be replaced with data.
The pattern schematic diagram of the reference signal when example 3 has provided k=2 has been 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 4
In this example, in Physical Resource Block, be mapped with k road (floor) reference signal, and during k=8, will describe the position of reference signal in Physical Resource Block in this example below in detail.
When Cyclic Prefix was the regular circulation prefix, reference signal can be shown in Fig. 7 a in the position in the Physical Resource Block.In Fig. 7 a, the OFDM symbol that is mapped with reference signal is the 6th, seven, 13,14 an OFDM symbol of Physical Resource Block.Concrete mapping situation is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 6th OFDM symbol, on the 4th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 13 OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 7th subcarrier, the 14 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 4th subcarrier, on the 10th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 13 OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 10th subcarrier, the 14 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 1st subcarrier, on the 7th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 6th OFDM symbol, on the 5th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 11st subcarrier of the 13 OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 2nd subcarrier, the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 8th subcarrier, the 14 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 5th subcarrier, on the 11st subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 6th OFDM symbol, on the 2nd subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 8th subcarrier of the 13 OFDM symbol.
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 5th subcarrier, the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 11st subcarrier, the 14 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
When Cyclic Prefix is extended cyclic prefix, these reference signals can be shown in Fig. 7 b in the position in the Physical Resource Block, in Fig. 7 b, the OFDM symbol that is mapped with reference signal is the 5th, six, 11,12 an OFDM symbol, and concrete mapping position is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 5th OFDM symbol, on the 4th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 11 OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 7th subcarrier, the 12 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 4th subcarrier, on the 10th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 5th OFDM symbol, on the 1st subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 11 OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 10th subcarrier, the 12 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 1st subcarrier, on the 7th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 5th OFDM symbol, on the 5th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 11st subcarrier of the 11 OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 2nd subcarrier, the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 8th subcarrier, the 12 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 5th subcarrier, on the 11st subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 5th OFDM symbol, on the 2nd subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 8th subcarrier of the 11 OFDM symbol.
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 5th subcarrier, the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 11st subcarrier, the 12 OFDM symbol (promptly, last OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
In addition, when Cyclic Prefix was the regular circulation prefix, these reference signals can also be shown in Fig. 7 c, in Fig. 7 c in the position in the Physical Resource Block, the OFDM symbol that is mapped with reference signal is the 5th, eight, nine, 12 an OFDM symbol, and concrete mapping position is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 5th OFDM symbol, on the 5th subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol), on the 11st subcarrier of the 9th OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the 8th OFDM symbol, on the 5th subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 11st subcarrier of the 12 OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 5th OFDM symbol, on the 2nd subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol), on the 8th subcarrier of the 9th OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 5th subcarrier, on the 11st subcarrier of the 8th OFDM symbol, on the 2nd subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 8th subcarrier of the 12 OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 3rd subcarrier, on the 9th subcarrier of the 5th OFDM symbol, on the 6th subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol), on the 12nd subcarrier of the 9th OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 3rd subcarrier, on the 9th subcarrier of the 8th OFDM symbol, on the 6th subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 12nd subcarrier of the 12 OFDM symbol.
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 6th subcarrier, on the 12nd subcarrier of the 5th OFDM symbol, on the 3rd subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol), on the 9th subcarrier of the 9th OFDM symbol.
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 6th subcarrier, on the 12nd subcarrier of the 8th OFDM symbol, on the 3rd subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 9th subcarrier of the 12 OFDM symbol.
In addition, when Cyclic Prefix was extended cyclic prefix, these reference signals can also be shown in Fig. 7 d, in Fig. 7 d in the position in the Physical Resource Block, the OFDM symbol that is mapped with reference signal is the 4th, seven, eight, ten an OFDM symbol, and concrete mapping position is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol), on the 11st subcarrier of the 8th OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the 7th OFDM symbol, on the 5th subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 11st subcarrier of the tenth OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol), on the 8th subcarrier of the 8th OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 5th subcarrier, on the 11st subcarrier of the 7th OFDM symbol, on the 2nd subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 8th subcarrier of the tenth OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 3rd subcarrier, on the 9th subcarrier of the 4th OFDM symbol, on the 6th subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol), on the 12nd subcarrier of the 8th OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 3rd subcarrier, on the 9th subcarrier of the 7th OFDM symbol, on the 6th subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 12nd subcarrier of the tenth OFDM symbol.
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 6th subcarrier, on the 12nd subcarrier of the 4th OFDM symbol, on the 3rd subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol), on the 9th subcarrier of the 8th OFDM symbol.
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 6th subcarrier, on the 12nd subcarrier of the 7th OFDM symbol, on the 3rd subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot), on the 9th subcarrier of the tenth OFDM symbol.
In addition, when Cyclic Prefix was the regular circulation prefix, these reference signals can also be shown in Fig. 7 e, in Fig. 7 e in the position in the Physical Resource Block, the OFDM symbol that is mapped with reference signal is the 4th, seven, ten, 13 an OFDM symbol, and concrete mapping position is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 4th OFDM symbol, on the 4th subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol), on the 10th subcarrier of the tenth OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 13 OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 4th OFDM symbol, on the 1st subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol), on the 7th subcarrier of the tenth OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 13 OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol), on the 11st subcarrier of the tenth OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 7th OFDM symbol, on the 5th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 11st subcarrier of the 13 OFDM symbol.
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol), on the 8th subcarrier of the tenth OFDM symbol.
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 7th OFDM symbol, on the 2nd subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 8th subcarrier of the 13 OFDM symbol.
In the time of will being k road (k floor) and k=8 to reference signal below, adopt to describe according to the mapping position of reference signal in Physical Resource Block behind the mapping method of the present invention.
Example 5
In this example, 8 tunnel reference signals are mapped on 4 OFDM symbols.
When Cyclic Prefix was the regular circulation prefix, reference signal can be shown in Fig. 8 a in the position in the Physical Resource Block.In Fig. 8 a, the OFDM symbol that is mapped with reference signal is the 6th, seven, 13,14 an OFDM symbol of Physical Resource Block.Concrete mapping situation is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot).
When Cyclic Prefix was extended cyclic prefix, reference signal can be shown in Fig. 8 b in the position in the Physical Resource Block.In Fig. 8 b, the OFDM symbol that is mapped with reference signal is the 5th, six, 11,12 an OFDM symbol of Physical Resource Block.Concrete mapping situation is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot).
In addition, when Cyclic Prefix was the regular circulation prefix, reference signal can be shown in Fig. 8 c in the position in the Physical Resource Block.In Fig. 8 c, the OFDM symbol that is mapped with reference signal is the 5th, eight, nine, 12 an OFDM symbol of Physical Resource Block.Concrete mapping situation is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 8th subcarrier, on the 2nd subcarrier of the 8th OFDM symbol (that is first OFDM symbol of second time slot).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, last OFDM symbol of second time slot) on the 8th subcarrier, on the 2nd subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 10th subcarrier, on the 5th subcarrier of the 9th OFDM symbol (that is second of second time slot OFDM symbol).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 8th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 11st subcarrier, on the 5th subcarrier of the 12 OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
In addition, when Cyclic Prefix was extended cyclic prefix, reference signal can be shown in Fig. 8 d in the position in the Physical Resource Block.In Fig. 8 d, the OFDM symbol that is mapped with reference signal is the 4th, seven, eight, ten an OFDM symbol of Physical Resource Block.Concrete mapping situation is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 2nd subcarrier, on the 8th subcarrier of the tenth OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 8th subcarrier, on the 2nd subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 8th subcarrier, on the 2nd subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 5th subcarrier, on the 11st subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, third from the bottom OFDM symbol of first time slot) on the 11st subcarrier, on the 5th subcarrier of the 8th OFDM symbol (that is second of second time slot OFDM symbol).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, first OFDM symbol of second time slot) on the 11st subcarrier, on the 5th subcarrier of the tenth OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
In addition, the mapping situation of this example can also be with reference to the mapping mode shown in Fig. 8 e.
Shown in Fig. 8 e, when Cyclic Prefix was the regular circulation prefix, the OFDM symbol that is mapped with reference signal can be the 4th, seven, ten, 13 OFDM symbol, and the particular location of reference signal in Physical Resource Block is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol).
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol).
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 13 OFDM symbol (that is third from the bottom OFDM symbol of second time slot).
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the tenth OFDM symbol (that is the 3rd of second time slot the OFDM symbol).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot).
Example 6
In this example, 8 tunnel reference signals are mapped on 6 OFDM symbols.
On the one hand, when subframe adopts the regular circulation prefix, as shown in Figure 9, the symbol that is mapped with reference signal is the 4th in the Physical Resource Block, six, seven, 11,13,14 OFDM symbols, with first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 6th OFDM symbol, on the 4th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 13 OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 7th OFDM symbol, on the 4th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot), on the 10th subcarrier of the 14 OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 13 OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot), on the 7th subcarrier of the 14 OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 7th subcarrier, on the 1st subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 10th subcarrier, on the 4th subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol).
On the other hand, when subframe adopts extended cyclic prefix, as shown in figure 10, the symbol that is mapped with reference signal is the 4th in the Physical Resource Block, five, six, ten, 11,12 OFDM symbols, as shown in figure 10, with first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 5th OFDM symbol, on the 4th subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 11 OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 6th OFDM symbol, on the 4th subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot), on the 10th subcarrier of the 12 OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 5th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 5th OFDM symbol, on the 1st subcarrier of the 11 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 11 OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 12 OFDM symbol (that is last OFDM symbol of second time slot), on the 7th subcarrier of the 12 OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the tenth OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the six tunnel reference signal (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 8th subcarrier, on the 2nd subcarrier of the tenth OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the tenth OFDM symbol (that is the 4th of second time slot the OFDM symbol).
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 11st subcarrier, on the 5th subcarrier of the tenth OFDM symbol (that is the 4th of second time slot the OFDM symbol).
Example 7
In this example 8 tunnel reference signals are mapped on 6 OFDM symbols.
When subframe adopted the regular circulation prefix, as shown in figure 11, the symbol that is mapped with reference signal was the 4th, six, seven, 11,13,14 an OFDM symbol in the Physical Resource Block, and as shown in figure 11, concrete mapping mode is as follows:
With first via reference signal (promptly, reference signal #0) be mapped to the following time-frequency position (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 7th subcarrier on the 1st subcarrier on, the 6th the OFDM symbol, the 4th subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 10th subcarrier of the 13 OFDM symbol.
With the second tunnel reference signal (promptly, reference signal #1) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 7th OFDM symbol, on the 4th subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot), on the 10th subcarrier of the 14 OFDM symbol.
With the Third Road reference signal (promptly, reference signal #2) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 6th OFDM symbol (promptly, the penult OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13 OFDM symbol (that is the penult OFDM symbol of second time slot), on the 7th subcarrier of the 13 OFDM symbol.
With the four tunnel reference signal (promptly, reference signal #3) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 7th OFDM symbol (promptly, last OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 14 OFDM symbol (that is last OFDM symbol of second time slot), on the 7th subcarrier of the 14 OFDM symbol.
With the five tunnel reference signal (promptly, reference signal #4) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 1st subcarrier, on the 7th subcarrier of the 4th OFDM symbol, on the 4th subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol), on the 10th subcarrier of the 11 OFDM symbol.
The six tunnel reference signal is put (promptly, reference signal #5) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 4th subcarrier, on the 10th subcarrier of the 4th OFDM symbol, on the 1st subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol), on the 7th subcarrier of the 11 OFDM symbol.
With the seven tunnel reference signal (promptly, reference signal #6) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 2nd subcarrier, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol), on the 11st subcarrier of the 11 OFDM symbol.
With the eight tunnel reference signal (promptly, reference signal #7) be mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol (promptly, the 4th OFDM symbol of first time slot) on the 5th subcarrier, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the 11 OFDM symbol (that is the 4th of second time slot the OFDM symbol), on the 8th subcarrier of the 11 OFDM symbol.
Alternatively, in example 4, example 5, example 6, example 7 described mapping process, any 1 tunnel (any 1 floor) that shines upon in the Physical Resource Block, any 2 tunnel (any 2 floor) or any 3 tunnel (any 3 layers) reference signal can be replaced with data.
The pattern schematic diagram of the reference signal of example 4 when example 7 has provided k=8 has been 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.In the mapping pattern of above-mentioned each reference signal, the initial frequency domain position of each road reference signal is all identical.For example, in example 7, mapping pattern as shown in figure 11, the initial frequency domain position of first via reference signal, the second tunnel reference signal, Third Road reference signal, the four tunnel reference signal, the five tunnel reference signal, the six tunnel reference signal, the seven tunnel reference signal, the eight tunnel reference signal is all identical, is A=1.
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 (24)

1. the mapping method of reference signal and Physical Resource Block, be used for one or more reference signal is mapped to Physical Resource Block, wherein, described Physical Resource Block comprises two continuous slots of time domain equal in length, and described Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal includes a plurality of reference signals, it is characterized in that, comprising:
N the OFDM symbol that described one or more reference signal is mapped to described Physical Resource Block is on the OFDM symbol, and wherein, the value of N is one of following: 3,4,6;
For the reference signal that is mapped to same time domain, the frequency domain interval of same road reference signal is set to M subcarrier, and wherein, the value of M is one of following: 3,4,6,12.
2. method according to claim 1 is characterized in that, one tunnel reference signal is being shone upon, and when system adopts the regular circulation prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbols in time domain, and then described method comprises:
A plurality of reference signals in described one tunnel reference signal are mapped on the following time-frequency position of described Physical Resource Block: A subcarrier of the 4th OFDM symbol, (A+4) individual subcarrier of the 4th OFDM symbol, (A+8) individual subcarrier of the 4th OFDM symbol, (A+2) individual subcarrier of the 7th OFDM symbol, (A+6) individual subcarrier of the 7th OFDM symbol, 13+1 subcarrier of (A+10) mod of the 7th OFDM symbol, A subcarrier of the 10th OFDM symbol, (A+4) individual subcarrier of the 10th OFDM symbol, (A+8) individual subcarrier of the 10th OFDM symbol, (A+2) individual subcarrier of the 13rd OFDM symbol, (A+6) individual subcarrier of the 13rd OFDM symbol, (A+10) mod13+1 subcarrier of the 13rd OFDM symbol;
Wherein, A=1,2,3,4.
3. method according to claim 1 is characterized in that, one tunnel reference signal is being shone upon, and when system adopts extended cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbols in time domain, and then described method comprises:
A plurality of reference signals in described one tunnel reference signal are mapped on the following time-frequency position of described Physical Resource Block: A subcarrier of the 5th OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol, (A+6) individual subcarrier of the 5th OFDM symbol, 13+1 subcarrier of (A+9) mod of the 5th OFDM symbol, (A+2) individual subcarrier of the 8th OFDM symbol, (A+5) individual subcarrier of the 8th OFDM symbol, (A+8) individual subcarrier of the 8th OFDM symbol, (A+11) mod13+1 subcarrier of the 8th OFDM symbol, A subcarrier of the 11st OFDM symbol, (A+3) individual subcarrier of the 11st OFDM symbol, (A+6) individual subcarrier of the 11st OFDM symbol, 13+1 subcarrier of (A+9) mod of the 11st OFDM symbol;
Wherein, A=1,2,3,4.
4. method according to claim 1 is characterized in that, if the multichannel reference signal is 2 the tunnel, and this 2 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+4) individual subcarrier of described first OFDM symbol, (A+8) individual subcarrier of described first OFDM symbol, (A+2) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: A subcarrier of second OFDM symbol of described 4 OFDM symbols, (A+4) individual subcarrier of described second OFDM symbol, (A+8) individual subcarrier of described second OFDM symbol, (A+2) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 4th OFDM symbol;
Wherein, A=1,2,3,4.
5. method according to claim 1 is characterized in that, if the multichannel reference signal is 2 the tunnel, and this 2 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+3) individual subcarrier of described first OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, (A+2) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbols, (A+5) individual subcarrier of described the 3rd OFDM symbol, (A+8) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+11) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: A subcarrier of second OFDM symbol of described 4 OFDM symbols, (A+3) individual subcarrier of described second OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+9) individual subcarrier of described second OFDM symbol, (A+2) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbols, (A+5) individual subcarrier of described the 4th OFDM symbol, (A+8) individual subcarrier of described the 4th OFDM symbol, (A+11) mod13+1 subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4.
6. method according to claim 1 is characterized in that, if the multichannel reference signal is 4 the tunnel, and this 4 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbolic point of described 4 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol, (A+6) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
7. method according to claim 1 is characterized in that, if the multichannel reference signal is 4 the tunnel, and this 4 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol, (A+6) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
8. according to claim 6 or 7 described methods, it is characterized in that Ying She reference signal is 3 the tunnel if desired, the reference signal of shining upon on the time-frequency position of the arbitrary road reference signal in described 4 tunnel reference signals that then will shine upon replaces with data.
9. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol, (A+6) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described first OFDM symbol, (A+4) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+7) mod of described second OFDM symbol, (A+4) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+10) mod of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 3rd OFDM symbol, (A+1) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+10) mod of described second OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 4th OFDM symbol, (A+1) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
10. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, and then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 3rd OFDM symbol of A subcarrier of first OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol, (A+6) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of second OFDM symbol of described 4 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 4 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described first OFDM symbol, (A+4) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+10) mod of described first OFDM symbol, (A+1) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+7) mod of described second OFDM symbol, (A+4) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+10) mod of described second OFDM symbol, (A+1) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
11. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of described 4 OFDM symbols, the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of second OFDM symbol of described 4 OFDM symbols, the 4th OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of described first OFDM symbol, (A+3) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of described second OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
12. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 4 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of described 4 OFDM symbols, the 3rd OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described first OFDM symbol, A subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of described first OFDM symbol, (A+3) individual subcarrier of described the 3rd OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of second OFDM symbol of described 4 OFDM symbols, the 4th OFDM symbol of described 4 OFDM symbols;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described second OFDM symbol, A subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of described second OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=0,1,2,3,4,5.
13. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 6 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 5th OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described the 3rd OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 6th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 5th OFDM symbol, (A+6) individual subcarrier of described the 5th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol, A subcarrier of described the 6th OFDM symbol, (A+6) individual subcarrier of described the 6th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: A subcarrier of first OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described first OFDM symbol, (A+4) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+10) mod of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 4th OFDM symbol, (A+1) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
14. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 6 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 5th OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 5th OFDM symbol, (A+6) individual subcarrier of described the 5th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described the 3rd OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 6th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol, A subcarrier of described the 6th OFDM symbol, (A+6) individual subcarrier of described the 6th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 4th OFDM symbol of A subcarrier of first OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described first OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described first OFDM symbol, A subcarrier of described the 4th OFDM symbol, (A+6) individual subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+1) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described first OFDM symbol, (A+4) individual subcarrier of described the 4th OFDM symbol, 13+1 subcarrier of (A+10) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: (A+4) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+10) mod of described first OFDM symbol, 13+1 subcarrier of (A+7) mod of described the 4th OFDM symbol, (A+1) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
15. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 6 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 5th OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described the 3rd OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 6th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 5th OFDM symbol, (A+6) individual subcarrier of described the 5th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol, A subcarrier of described the 6th OFDM symbol, (A+6) individual subcarrier of described the 6th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of described 6 OFDM symbols, the 4th OFDM symbol of described 6 OFDM symbols;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described first OFDM symbol, A subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+9) mod of described first OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
16. method according to claim 1 is characterized in that, if the multichannel reference signal is 8 the tunnel, and this 8 tunnel reference signal is mapped to 6 OFDM symbols of described Physical Resource Block, then described method comprises:
A plurality of reference signals in the first via reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 5th OFDM symbol of A subcarrier of second OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described second OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 5th OFDM symbol;
A plurality of reference signals in the second tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described second OFDM symbol, 13+1 subcarrier of (A+9) mod of described second OFDM symbol, A subcarrier of described the 5th OFDM symbol, (A+6) individual subcarrier of described the 5th OFDM symbol;
A plurality of reference signals in the Third Road reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of the 6th OFDM symbol of A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbols, (A+6) individual subcarrier of described the 3rd OFDM symbol, described 6 OFDM symbols, 13+1 subcarrier of (A+9) mod of described the 6th OFDM symbol;
A plurality of reference signals in the four tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described the 3rd OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 3rd OFDM symbol, A subcarrier of described the 6th OFDM symbol, (A+6) individual subcarrier of described the 6th OFDM symbol;
A plurality of reference signals in the five tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of A subcarrier of first OFDM symbol of described 6 OFDM symbols, the 4th OFDM symbol of described 6 OFDM symbols;
A plurality of reference signals in the six tunnel reference signal are mapped to following time-frequency position: (A+6) individual subcarrier of described first OFDM symbol, A subcarrier of described the 4th OFDM symbol;
A plurality of reference signals in the seven tunnel reference signal are mapped to following time-frequency position: (A+3) individual subcarrier of described first OFDM symbol, 13+1 subcarrier of (A+9) mod of described the 4th OFDM symbol;
A plurality of reference signals in the eight tunnel reference signal are mapped to following time-frequency position: 13+1 subcarrier of (A+10) mod of described first OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol;
Wherein, A=1,2,3,4,5,6.
17. according to each described method in the claim 9 to 16, it is characterized in that,
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.
18. according to each described method in the claim 1,13 to 16, it is characterized in that,
When described system adopted the regular circulation prefix, the OFDM symbol that is mapped with reference signal was in 14 OFDM symbols of described Physical Resource Block the 4th, 6,7,11,13,14 OFDM symbols; Perhaps
When described system adopted the regular circulation prefix, the OFDM symbol that is mapped with reference signal was in 14 OFDM symbols of described Physical Resource Block the 4th, 6,7,10,11,13 OFDM symbols.
19. according to each described method in the claim 1,13 to 16, it is characterized in that,
When described system adopted extended cyclic prefix, the OFDM symbol that is mapped with reference signal was in 12 OFDM symbols of described Physical Resource Block the 4th, 5,6,10,11,12 OFDM symbols;
When described system adopted extended cyclic prefix, the OFDM symbol that is mapped with reference signal was in 12 OFDM symbols of described Physical Resource Block the 5th, 6,8,9,11,12 OFDM symbols.
20. according to each described method in the claim 13 to 16, 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, described the 4th OFDM symbol, described the 5th OFDM symbol and described the 6th OFDM symbol.
21., it is characterized in that when adopting the regular circulation prefix in described system, the OFDM symbol that is mapped with reference signal is according to each described method in the claim 1,4 to 7,9 to 12:
The the 6th, 7,13,14 OFDM symbol in 14 OFDM symbols of described Physical Resource Block; Perhaps
The the 5th, 8,9,12 OFDM symbol in 14 OFDM symbols of described Physical Resource Block; Perhaps
The the 4th, 7,10,13 OFDM symbol in 14 OFDM symbols of described Physical Resource Block.
22., it is characterized in that when adopting extended cyclic prefix in described system, the OFDM symbol that is mapped with reference signal is according to each described method in the claim 1,4 to 7,9 to 12:
The the 5th, 6,9,11 OFDM symbol in 12 OFDM symbols of described Physical Resource Block; Perhaps
The the 5th, 6,11,12 OFDM symbol in 12 OFDM symbols of described Physical Resource Block; Perhaps
The the 4th, 7,8,10 OFDM symbol in 12 OFDM symbols of described Physical Resource Block; Perhaps
The the 5th, 6,8,9 OFDM symbol in 12 OFDM symbols of described Physical Resource Block.
23. according to each described method in the claim 4 to 7,9 to 12, 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.
24. according to each described method in the claim 1 to 7,9 to 16, described reference signal is meant: based on the reference signal of layer.
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