CN105791200A - Mapping method of reference signal and physical resource block - Google Patents

Mapping method of reference signal and physical resource block Download PDF

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Publication number
CN105791200A
CN105791200A CN201610113270.2A CN201610113270A CN105791200A CN 105791200 A CN105791200 A CN 105791200A CN 201610113270 A CN201610113270 A CN 201610113270A CN 105791200 A CN105791200 A CN 105791200A
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ofdm symbol
subcarrier
reference signal
mapped
individual
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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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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Abstract

The invention discloses a mapping method of a reference signal and a physical resource block. The method comprises the following steps: mapping one or more paths of reference signals to N orthogonal frequency division multiplexing OFDM symbols of the physical resource block, wherein value of N is one of 3, 4 and 6; and for the reference signals mapped to the same time domain, setting a frequency domain interval of the same path of reference signals as M subcarriers, wherein value of M is one of 3, 4, 6 and 12. By the technical scheme of the invention, by means of making position of each reference signal based on layer in the physical resource block clear and definite, gaps of the prior art are filled; and by the resource block mapping scheme of the reference signal of the invention, overall performance of a system may be improved.

Description

The mapping method of reference signal and Physical Resource Block
Technical field
The present invention relates to the communications field, particularly relate to the mapping method of a kind of reference signal and Physical Resource Block.
Background technology
OFDM (OrthogonalFrequencyDivisionMultiplexing, referred to as OFDM) is one of core technology in forth generation mobile communication, and OFDM technology essence is a kind of multi-carrier modulation communication technology.
In OFDM technology, multipath channel on its frequency domain presents the characteristic of frequency selective fading, in order to overcome this decline, OFDM channel is divided into many sub-channels on frequency domain, the spectral characteristic of every sub-channels all near flat, and mutually orthogonal between sub-channel, so, the frequency spectrum allowing for sub-channel is overlapped, it is possible to very utilize frequency spectrum resource to limits.
Multiinputoutput (MultipleInputMultipleOutput, referred to as MIMO) technology can increase power system capacity, improve transmission performance, and can blend with the technology of other physical layer, therefore become B3G and the key technology of forth generation mobile communication system.But, when channel relevancy is stronger, multipath channel the diversity gain brought and spatial multiplexing gain can be substantially reduced, and cause declining to a great extent of mimo system performance.So, it is proposed to a kind of MIMO method for precoding, it is a kind of efficient MIMO multiplex mode.Mimo channel is divided into multiple independent pseudo channel by the precoding processing of sending and receiving end by the method, it is possible to effectively eliminate the impact of channel relevancy, it is ensured that mimo system stability under circumstances.
Long Term Evolution (LongTermEvolution, referred to as LTE) system is the essential planning of third generation partnership.When LTE system adopts conventional cyclic prefix, a time slot comprises the uplink/downlink symbol of 7 length, and when LTE system adopts extended cyclic prefix, a time slot comprises the uplink/downlink symbol of 6 length.Fig. 1 is the structural representation that system bandwidth is Physical Resource Block during 5MHz of LTE system, as shown in Figure 1, one Resource Unit (ResourceElement, referred to as RE) it is a subcarrier in an OFDM symbol, and a downlink resource block (ResourceBlock, referred to as RB) is made up of 12 subcarriers of continuous print and continuous print 7 (when extended cyclic prefix being 6) OFDM symbol.One Resource Unit is 180kHz on frequency domain, time domain is the time span of a general time slot, when carrying out resource distribution, can be allocated with Resource Block for ultimate unit.
LTE system supports that the MIMO of 4 antennas applies, such as, 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 (Cell-specificreferencesignals in community of full bandwidth, referred to as CRS) mode, the function of this CRS is: down channel carries out mass measurement, and down channel is estimated (demodulation).When Cyclic Prefix is conventional cyclic prefix time, as shown in Figure 2 a, when Cyclic Prefix is extended cyclic prefix time, these publicly-owned reference signal positions in Physical Resource Block are as shown in Figure 2 b in these publicly-owned reference signal positions in Physical Resource Block.Additionally, also has the reference signal (UE-specificreferencesignals) that a kind of user is proprietary, this reference signal is only transmitted on the time-frequency domain position at proprietary Physical Shared Channel (Physicaldownlinksharedchannel, referred to as the PDSCH) place of user.
Senior Long Term Evolution (FurtherAdvancementsforE-UTRA, LTE-Advanced) system is the evolution version of LTERelease-8.LTE-Advanced meets or more than 3GPPTR25.913 except needing: except all related needs of " RequirementsforEvolvedUTRA (E-UTRA) andEvolvedUTRAN (E-UTRAN) ", also should meet or exceed the ITU-R demand of IMT-Advanced proposed.Wherein, referring to the demand of LTERelease-8 backward compatibility: the terminal of LTERelease-8 can work in the network of LTE-Advanced, the terminal of LTE-Advanced can work in the network of LTERelease-8.
It addition, LTE-Advanced should meet different size of spectrum disposition, for instance, work under (the continuous print frequency spectrum resource of such as 100MHz) more broader than LTERelease-8 spectrum disposition, to reach higher performance and Target peak rate.Owing to LTE-Advanced network is required to access LTE user, so its operational frequency bands needs to cover LTE frequency band, but be absent from the spectral bandwidth of assignable continuous 100MHz in this frequency range, so LTE-Advanced needs the problem solved to be that several distributions continuous component carrier frequency (frequency spectrum) (Componentcarrier) on different frequency bands is aggregating the formation operable 100MHz bandwidth of LTE-Advanced.That is, for the frequency spectrum after assembling, being divided into n component carrier frequency (Componentcarrier) (frequency spectrum), the frequency spectrum in each component carrier frequency (frequency spectrum) is continuous print.
At present, the demand behaviors report TR36.814V0.1.1 of LTE-Advanced specify that the descending application that can support at most 8 antennas of LTE-Advanced；nullLTE-Advanced be specify that application and the CoMP for supporting 8 antennas by February, 2009 the 56th meeting of 3GPP、The design basic framework (Wayforward) using lower LTE-Advanced downlink reference signal of the technology such as double fluid Beamforming，The LTE-Advanced downlink reference signal operated will be defined as two kinds of reference signal: towards the reference signal of PDSCH demodulation with towards channel condition information (ChannelStatusInformation，Referred to as CSI) reference signal that produces，And，Reference signal towards PDSCH demodulation sends based on layer，Every layer of corresponding a kind of reference signal，At present，In LTE-Advanced system，The number of plies can supported at most is 8.
But, not yet propose to be capable of the resource mapping scheme of the reference signal based on layer at present.
Summary of the invention
Consider that what exist in correlation technique proposes the present invention owing to lacking the problem of the resource block mapping scheme being capable of the reference signal based on layer, for this, present invention is primarily targeted at mapping method and device that a kind of reference signal and Physical Resource Block are provided, to solve the problems referred to above.
According to an aspect of the present invention, the mapping method of a kind of reference signal and Physical Resource Block is provided, the method is mainly used in being mapped on Physical Resource Block by one or more reference signal, wherein, Physical Resource Block includes two continuous slots that time domain length is equal, further, Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal.
Reference signal and the mapping method of Physical Resource Block according to the present invention include: one or more reference signal be mapped in N number of OFDM symbol and the OFDM symbol of Physical Resource Block, and wherein, the value of N is one below: 3,4,6；For being mapped to the reference signal of same time domain, the frequency domain interval of same road reference signal being set to M subcarrier, wherein, the value of M is one below: 3,4,6,12.
Wherein, if multichannel reference signal is 2 tunnels, and this 2 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+4) individual subcarrier of described first OFDM symbol, (A+8) individual subcarrier of described first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described 3rd OFDM symbol, (A+10) mod12 subcarrier of described 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+4) individual subcarrier of described second OFDM symbol, (A+8) individual subcarrier of described second OFDM symbol, (A+2) individual subcarrier of 4th OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described 4th OFDM symbol, (A+10) mod12 subcarrier of described 4th OFDM symbol；Wherein, A=1,2,3,4；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+3) individual subcarrier of described first OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of described 4 OFDM symbol, (A+5) individual subcarrier of described 3rd OFDM symbol, (A+8) individual subcarrier of described 3rd OFDM symbol, (A+11) mod12 subcarrier of described 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (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 4th OFDM symbol of described 4 OFDM symbol, (A+5) individual subcarrier of described 4th OFDM symbol, (A+8) individual subcarrier of described 4th OFDM symbol, (A+11) mod12 subcarrier of described 4th OFDM symbol；Wherein, A=1,2,3,4.
If multichannel reference signal is 4 tunnels, and this 4 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: second OFDM symbol the A subcarrier of point of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6.
If multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described second OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+1) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described second OFDM symbol, (A+10) mod12 subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+1) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+7) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described second OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described second OFDM symbol, (A+10) mod12 subcarrier of described second OFDM symbol, (A+1) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+7) mod12 subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol the A subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+3) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol the A subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+3) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=0,1,2,3,4,5.
If multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 6 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol of 6 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 6 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, described 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, described 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+10) mod12 subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6.
By at least one technical scheme above-mentioned of the present invention, by clearly based on each reference signal of layer position in Physical Resource Block, having filled up the blank of prior art, by the resource block mapping scheme of reference signal of the present invention, it is possible to increase the overall performance of system.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, is used for together with embodiments of the present invention explaining the present invention, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the system bandwidth according to correlation technique is the schematic diagram of the Physical Resource Block of the LTE system of 5MHz；
Fig. 2 a-2b is the publicly-owned reference signal in the LTE system small area schematic diagram of position in Physical Resource Block according to correlation technique；
Fig. 3 is the flow chart of the mapping method of the reference signal according to the inventive method embodiment and Physical Resource Block；
Fig. 4 a-4b is the schematic diagram of the reference signal position of the example 1 of the method shown in Fig. 3；
Fig. 5 a-5d is the schematic diagram of the reference signal position of the example 2 of the method shown in Fig. 3；
Fig. 6 a-6e is the schematic diagram of the reference signal position of the example 3 of the method shown in Fig. 3；
Fig. 7 a-7e is the schematic diagram of the reference signal position of the example 4 of the method shown in Fig. 3；
Fig. 8 a-8e is the schematic diagram of the reference signal position of the example 5 of the method shown in Fig. 3；
Fig. 9 is a schematic diagram of the reference signal position of the example 6 of the method shown in Fig. 3；
Figure 10 is another schematic diagram of the reference signal position of the example 6 of the method shown in Fig. 3；
Figure 11 is the schematic diagram of the reference signal position of the example 7 of the method shown in Fig. 3.
Detailed description of the invention
The mapping scheme of reference signal or the publicly-owned reference signal in community based on antenna port, or the special reference signal based on a layer or two-layer, for 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, it is possible to improve the overall performance of system.
When not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Embodiment of the method
According to embodiments of the present invention, it is provided that the mapping method of a kind of reference signal and Physical Resource Block.
Fig. 3 is the flow chart of the mapping of reference signal according to embodiments of the present invention and Physical Resource Block, it should be noted that, for the ease of describing, illustrate and describe the technical scheme of the embodiment of the method for the present invention in figure 3 with the form of step, step shown in figure 3 can perform in the computer system of such as one group of computer executable instructions.Although figure 3 illustrates logical order, but in some cases, it is possible to perform shown or described step with the order being different from herein.As shown in Figure 3, the method is for being mapped to Physical Resource Block by one or more reference signal, wherein, Physical Resource Block includes two continuous slots that time domain length is equal, further, this Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal, specifically, (step S302 to step S304) is comprised the following steps.
Step S302, one or more reference signal being mapped in N number of OFDM symbol and the OFDM symbol of Physical Resource Block, wherein, the value of N is one below: 3,4,6, further, this reference signal can be carried on the time-frequency domain position at the proprietary Physical Shared Channel place of user；
Step S304, for being mapped to the reference signal of same time domain, is set to M subcarrier by the frequency domain interval of same road reference signal, wherein, the value of M is at least one of: 3,4,6,12, and, each layer of reference signal is determined by cell ID at the initial position of frequency domain.
nullIn specific implementation process，When Dui mono-tunnel reference signal maps，Physical Resource Block comprises 12 subcarriers at frequency domain，14 OFDM symbol are comprised in time domain，If system adopts conventional cyclic prefix，Then concrete operations are: be mapped on the following time-frequency location of Physical Resource Block by the multiple reference signals in a road reference signal: the A subcarrier of the 4th OFDM symbol、(A+4) individual subcarrier of 4th OFDM symbol、(A+8) individual subcarrier of 4th OFDM symbol、(A+2) individual subcarrier of 7th OFDM symbol、(A+6) individual subcarrier of 7th OFDM symbol、(A+10) mod12 subcarrier of 7th OFDM symbol、The A subcarrier of the 10th OFDM symbol、(A+4) individual subcarrier of 10th OFDM symbol、(A+8) individual subcarrier of 10th OFDM symbol、(A+2) individual subcarrier of 13rd OFDM symbol、(A+6) individual subcarrier of 13rd OFDM symbol、(A+10) mod12 subcarrier of 13rd OFDM symbol；Wherein, A=1,2,3,4；nullIf system adopts extended cyclic prefix，Physical Resource Block comprises 12 subcarriers at frequency domain，12 OFDM symbol are comprised in time domain，Then concrete operations are: be mapped on the following time-frequency location of Physical Resource Block by the multiple reference signals in a road reference signal: the A subcarrier of the 5th OFDM symbol、(A+3) individual subcarrier of 5th OFDM symbol、(A+6) individual subcarrier of 5th OFDM symbol、(A+9) mod12 subcarrier of 5th OFDM symbol、(A+2) individual subcarrier of 8th OFDM symbol、(A+5) individual subcarrier of 8th OFDM symbol、(A+8) individual subcarrier of 8th OFDM symbol、(A+11) mod12 subcarrier of 8th OFDM symbol、The A subcarrier of the 11st OFDM symbol、(A+3) individual subcarrier of 11st OFDM symbol、(A+6) individual subcarrier of 11st OFDM symbol、(A+9) mod12 subcarrier of 11st OFDM symbol；Wherein, A=1,2,3,4.
If multichannel reference signal is 2 tunnels, and this 2 tunnel reference signal is mapped to 4 OFDM symbol of Physical Resource Block, then includes following two processing mode:
Processing mode 1: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+4) individual subcarrier of first OFDM symbol, (A+8) individual subcarrier of first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of 3rd OFDM symbol, (A+10) mod12 subcarrier of 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, (A+4) individual subcarrier of second OFDM symbol, (A+8) individual subcarrier of second OFDM symbol, the 4th (A+2) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 4th (A+6) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+10) mod12 subcarrier；Wherein, A=1,2,3,4.
Processing mode 2: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+3) individual subcarrier of first OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of 4 OFDM symbol, (A+5) individual subcarrier of 3rd OFDM symbol, (A+8) individual subcarrier of 3rd OFDM symbol, (A+11) mod12 subcarrier of 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, (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 4th OFDM symbol of 4 OFDM symbol, (A+5) individual subcarrier of 4th OFDM symbol, (A+8) individual subcarrier of 4th OFDM symbol, (A+11) mod12 subcarrier of 4th OFDM symbol；Wherein, A=1,2,3,4.
If multichannel reference signal is 4 tunnels, and this 4 tunnel reference signal is mapped to 4 OFDM symbol of Physical Resource Block, then includes following two processing mode:
Processing mode 1: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, the 3rd (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: second OFDM symbol the A subcarrier of point of 4 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 4th (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 3rd OFDM symbol, the 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 2: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, the 3rd (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 3rd OFDM symbol, the 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 4th (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6.
When multichannel reference signal is 4 tunnel, if needing the reference signal mapped is 3 tunnels, then the reference signal mapped on the time-frequency location of the arbitrary road reference signal in the 4 tunnel reference signals mapped is replaced with data.
If multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 4 OFDM symbol of Physical Resource Block, then includes following 4 kinds of processing modes:
Processing mode 1: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, the 3rd (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 4th (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 3rd OFDM symbol, the 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of first OFDM symbol, (A+7) mod12 subcarrier of first OFDM symbol, the 3rd (A+4) individual subcarrier of OFDM symbol, the 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of second OFDM symbol, (A+7) mod12 subcarrier of second OFDM symbol, the 4th (A+4) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of first OFDM symbol, (A+10) mod12 subcarrier of first OFDM symbol, the 3rd (A+7) mod12 subcarrier of OFDM symbol, the 3rd OFDM symbol (A+1) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of second OFDM symbol, (A+10) mod12 subcarrier of second OFDM symbol, the 4th (A+7) mod12 subcarrier of OFDM symbol, the 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 2: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, the 3rd (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 3rd OFDM symbol, the 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 4th (A+3) individual subcarrier of OFDM symbol of 4 OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Will
Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of first OFDM symbol, (A+7) mod12 subcarrier of first OFDM symbol, the 3rd (A+4) individual subcarrier of OFDM symbol, the 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of first OFDM symbol, (A+10) mod12 subcarrier of first OFDM symbol, the 3rd (A+1) individual subcarrier of OFDM symbol, the 3rd OFDM symbol (A+7) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of second OFDM symbol, (A+7) mod12 subcarrier of second OFDM symbol, the 4th (A+4) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of second OFDM symbol, (A+10) mod12 subcarrier of second OFDM symbol, the 4th (A+1) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+7) mod12 subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 3: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of first OFDM symbol, the 3rd OFDM symbol the A subcarrier；4th LUSHEN is examined letter
Multiple reference signals in number are mapped to following time-frequency location: (A+6) individual subcarrier of second OFDM symbol, the 4th OFDM symbol the A subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of first OFDM symbol, the 3rd OFDM symbol (A+3) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of second OFDM symbol, the 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 4: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 4 OFDM symbol, 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of first OFDM symbol, the 3rd OFDM symbol the A subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, the 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+9) mod1212 subcarrier of first OFDM symbol, the 3rd OFDM symbol (A+3) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 4 OFDM symbol, 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of second OFDM symbol, the 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: the of second OFDM symbol
(A+3) (A+9) mod12 subcarrier of individual subcarrier, the 4th OFDM symbol；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of second OFDM symbol, the 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=0,1,2,3,4,5.
If multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 6 OFDM symbol of Physical Resource Block, then includes following 4 kinds of processing modes:
Processing mode 1: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 5th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of 6 OFDM symbol, the 3rd (A+6) individual subcarrier of OFDM symbol, the 6th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 5th OFDM symbol, the 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: the 3rd (A+3) individual subcarrier of OFDM symbol, the 3rd (A+9) mod12 subcarrier of OFDM symbol, the A subcarrier of the 6th OFDM symbol, the 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, the 4th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of first OFDM symbol, (A+7) mod12 subcarrier of first OFDM symbol, the 4th (A+4) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of first OFDM symbol, (A+10) mod12 subcarrier of first OFDM symbol, the 4th (A+7) mod12 subcarrier of OFDM symbol, the 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 2: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 5th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 5th OFDM symbol, the 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of 6 OFDM symbol, the 3rd (A+6) individual subcarrier of OFDM symbol, the 6th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: the 3rd (A+3) individual subcarrier of OFDM symbol, the 3rd (A+9) mod12 subcarrier of OFDM symbol, the A subcarrier of the 6th OFDM symbol, the 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of first OFDM symbol, 6
The 4th (A+3) individual subcarrier of OFDM symbol of OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, (A+9) mod12 subcarrier of first OFDM symbol, the A subcarrier of the 4th OFDM symbol, the 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of first OFDM symbol, (A+7) mod12 subcarrier of first OFDM symbol, the 4th (A+4) individual subcarrier of OFDM symbol, the 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of first OFDM symbol, (A+10) mod12 subcarrier of first OFDM symbol, the 4th (A+7) mod12 subcarrier of OFDM symbol, the 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 3: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 5th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of 6 OFDM symbol, the 3rd (A+6) individual subcarrier of OFDM symbol, the 6th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 5th OFDM symbol, the 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: the 3rd (A+3) individual subcarrier of OFDM symbol, the 3rd OFDM symbol (A+9)
Mod12 subcarrier, the A subcarrier of the 6th OFDM symbol, the 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 6 OFDM symbol, 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of first OFDM symbol, the 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of first OFDM symbol, the 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6.
Processing mode 4: the multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of 6 OFDM symbol, (A+6) individual subcarrier of second OFDM symbol, the 5th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of second OFDM symbol, (A+9) mod12 subcarrier of second OFDM symbol, the A subcarrier of the 5th OFDM symbol, the 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of 6 OFDM symbol, the 3rd (A+6) individual subcarrier of OFDM symbol, the 6th (A+3) individual subcarrier of OFDM symbol of 6 OFDM symbol, the 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: the 3rd (A+3) individual subcarrier of OFDM symbol, the 3rd (A+9) mod12 subcarrier of OFDM symbol, the A subcarrier of the 6th OFDM symbol, the 6th OFDM symbol (A+6) individual subcarrier；By the multiple ginsengs in the 5th tunnel reference signal
Examine signal and be mapped to following time-frequency location: the A subcarrier of first OFDM symbol of 6 OFDM symbol, 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of first OFDM symbol, the 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of first OFDM symbol, the 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+10) mod12 subcarrier of first OFDM symbol, the 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6.
When multichannel reference signal is 8 tunnel, if needing the reference signal mapped is 5 tunnels, then the reference signal mapped on the time-frequency location of any 3 tunnel reference signals in the 8 tunnel reference signals mapped is replaced with data；If needing the reference signal mapped is 6 tunnels, then the reference signal mapped on the time-frequency location of any 2 tunnel reference signals in the 8 tunnel reference signals mapped is replaced with data；If needing the reference signal mapped is 7 tunnels, then the reference signal mapped on the time-frequency location of the arbitrary road reference signal in the 8 tunnel reference signals mapped is replaced with data.
Preferably, when system adopts conventional cyclic prefix, it is mapped with the 4th, 6,7,11,13,14 OFDM symbol in OFDM symbol is Physical Resource Block 14 OFDM symbol of reference signal；Or, for the 4th, 6,7,10,11,13 OFDM symbol in 14 OFDM symbol of Physical Resource Block；When system adopts extended cyclic prefix, it is mapped with the 4th, 5,6,10,11,12 OFDM symbol in OFDM symbol is Physical Resource Block 12 OFDM symbol of reference signal；Or, for the 5th, 6,8,9,11,12 OFDM symbol in 12 OFDM symbol of Physical Resource Block.
Further, the ascending arrangement of time-domain position coordinate 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 or descending arrangement.
Preferably, when system adopts conventional cyclic prefix, the OFDM symbol being mapped with reference signal is: the 6th, 7,13,14 OFDM symbol in 14 OFDM symbol of Physical Resource Block；Or, the 5th, 8,9,12 OFDM symbol in 14 OFDM symbol of Physical Resource Block；Or, the 4th, 7,10,13 OFDM symbol in 14 OFDM symbol of Physical Resource Block.
Preferably, when system adopts extended cyclic prefix, the OFDM symbol being mapped with reference signal is: the 5th, 6,9,11 OFDM symbol in 12 OFDM symbol of Physical Resource Block；Or, the 5th, 6,11,12 OFDM symbol in 12 OFDM symbol of Physical Resource Block；Or, the 4th, 7,8,10 OFDM symbol in 12 OFDM symbol of Physical Resource Block；Or, the 5th, 6,8,9 OFDM symbol in 12 OFDM symbol of Physical Resource Block.
Further, the ascending arrangement of time-domain position coordinate of above-mentioned first OFDM symbol, second OFDM symbol, the 3rd OFDM symbol and the 4th OFDM symbol or descending arrangement.
It should be noted that, it is directed to same road reference signal, frequency domain interval in the present invention is: be not mapped with between adjacent two reference signals of frequency domain position mapped in same OFDM symbol this road reference signal resource element quantity with 1 and, that is, when having the resource element that n is not mapped with this road reference signal between two reference signals that frequency domain position in identical time domain is adjacent, the value of M is (n+1).Such as, in the mapping pattern shown in Fig. 2 a, multiple reference signal (T of first via reference signal1) frequency domain interval on same time domain is 6, computational methods are: such as, in first OFDM symbol, and adjacent reference signal T1Be mapped at frequency domain on first subcarrier and the 7th subcarrier, between the two reference signal, there are 5 resource elements not being mapped with first via reference signal, then in first OFDM symbol, adjacent reference signal T1Frequency domain interval be 5+1=6.
By the technical scheme that the embodiment of the present invention provides, by clearly based on each reference signal of layer position in Physical Resource Block, having filled up the blank of prior art, by the resource block mapping scheme of reference signal of the present invention, it is possible to increase the overall performance of system.
Below in conjunction with example 1 to example 8, the method shown in Fig. 3 is described in detail, in example 1 to example 8, the frequency domain position of the reference signal of each antenna logic port can change along with the change 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, second tunnel reference signal is corresponding to the reference signal #1 of floor 2,3rd tunnel reference signal is corresponding to the reference signal #2 of floor 3,4th tunnel reference signal is corresponding to the reference signal #3 of floor 4,5th tunnel reference signal is corresponding to the reference signal #4 of floor 5,6th tunnel reference signal is corresponding to the reference signal #5 of floor 6,7th tunnel reference signal is corresponding to the reference signal #6 of floor 7, and the 8th tunnel reference signal is corresponding to the reference signal #7 of floor 8.
Further, in Fig. 4 to Figure 11, number in the figure T1Reference signal #0, T corresponding to layer 12Reference signal #1, T corresponding to layer 23Reference signal #2, T corresponding to layer 34Reference signal #3, T corresponding to layer 45Reference signal #4, T corresponding to layer 56Reference signal #5, T corresponding to layer 67Reference signal #6, T corresponding to layer 78Reference signal #7 corresponding to layer 8.
Additionally, in the multiple mapping mode being described below, describe the mapping pattern mapping the arbitrarily reference signal of the number of plies in 1,2,3,4,5,6,7,8 in Physical Resource Block, the present invention can define corresponding mapped mode according to the number of plies of the reference signal mapped, preferably, it is possible to 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, such as, the mapped mode 1 mapping pattern that the reference signal number of plies is 1 corresponding to mapping can be defined, similarly, it is also possible to the definition mapped mode 2 mapping pattern that the reference signal number of plies is 2 corresponding to mapping, the rest may be inferred.
Mode two: define 3 kinds of mapped modes, such as, the mapped mode 1 mapping pattern that the reference signal number of plies is 1 corresponding to mapping can be defined, the mapped mode 2 mapping pattern that the reference signal number of plies is 2 corresponding to mapping, the mapped mode 3 mapping pattern that the reference signal number of plies is 3,4,5,6,7,8 corresponding to mapping.
Mode three: define 4 kinds of mapped modes, such as, the mapped mode 1 mapping pattern that the reference signal number of plies is 1 corresponding to mapping can be defined, the mapped mode 2 mapping pattern that the reference signal number of plies is 2 corresponding to mapping, the mapped mode 3 mapping pattern that the reference signal number of plies is 3,4 corresponding to mapping, the mapped mode 4 mapping pattern that the reference signal number of plies is 5,6,7,8 corresponding to mapping.
Example 1
This example describes the mapping of the Physical Resource Block transmitting one layer of reference signal in a subframe, i.e. k=1.
When Fig. 4 a is subframe employing conventional cyclic prefix, reference signal situation schematic diagram in Physical Resource Block is (namely, the mapping pattern of reference signal during k=1), as shown in fig. 4 a, including the reference signal #0 of layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbol in time domain, further, A=1.
nullThe reference signal #0 of layer 1 is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 4th OFDM symbol is (namely，On 1st subcarrier of the 4th symbol being mapped in subframe first time slot)、5th subcarrier of the 4th OFDM symbol is (namely，On 5th subcarrier of the 4th symbol being mapped in subframe first time slot)、9th subcarrier of the 4th OFDM symbol is (namely，On 9th subcarrier of the 4th symbol being mapped in subframe first time slot)、3rd subcarrier of the 7th OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe first time slot)、7th subcarrier of the 7th OFDM symbol is (namely，On 7th subcarrier of last symbol being mapped in subframe first time slot)、11st subcarrier of the 7th OFDM symbol is (namely，On 11st subcarrier of last symbol being mapped in subframe first time slot)、1st subcarrier of the 10th OFDM symbol is (namely，On 1st subcarrier of the 3rd symbol being mapped in subframe second time slot)、5th subcarrier of the 10th OFDM symbol is (namely，On 5th subcarrier of the 3rd symbol being mapped in subframe second time slot)、9th subcarrier of the 10th OFDM symbol is (namely，On 9th subcarrier of the 3rd symbol being mapped in subframe second time slot)、3rd subcarrier of the 13rd OFDM symbol is (namely，On 3rd subcarrier of the penultimate symbol being mapped in subframe second time slot)、7th subcarrier of the 13rd OFDM symbol is (namely，On 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)、11st subcarrier of the 13rd OFDM symbol is (namely，On 11st subcarrier of the penultimate symbol being mapped in subframe second time slot).
When Fig. 4 b is subframe employing extended cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in Figure 4 b, including the reference signal #0 of layer 1, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbol in time domain.
nullReference Signal #0 is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol is (namely，On 1st subcarrier of the 5th symbol being mapped in subframe first time slot)、4th subcarrier of the 5th OFDM symbol is (namely，On 4th subcarrier of the 5th symbol being mapped in subframe first time slot)、7th subcarrier of the 5th OFDM symbol is (namely，On 7th subcarrier of the 5th symbol being mapped in subframe first time slot)、10th subcarrier of the 8th OFDM symbol is (namely，On 10th subcarrier of second symbol being mapped in subframe second time slot)、3rd subcarrier of the 8th OFDM symbol is (namely，On 3rd subcarrier of second symbol being mapped in subframe second time slot)、6th subcarrier of the 8th OFDM symbol is (namely，On 6th subcarrier of second symbol being mapped in subframe second time slot)、9th subcarrier of the 8th OFDM symbol is (namely，On 9th subcarrier of second symbol being mapped in subframe second time slot)、12nd subcarrier of the 8th OFDM symbol is (namely，On 12nd subcarrier of second symbol being mapped in subframe second time slot)、1st subcarrier of the 11st OFDM symbol is (namely，On 1st subcarrier of the penultimate symbol being mapped in subframe second time slot)、4th subcarrier of the 11st OFDM symbol is (namely，On 4th subcarrier of the penultimate symbol being mapped in subframe second time slot)、7th subcarrier of the 11st OFDM symbol is (namely，On 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)、10th subcarrier of the 11st OFDM symbol is (namely，On 10th subcarrier of the penultimate symbol being mapped in subframe second time slot).
The pattern schematic diagram of reference signal when example 1 gives k=1, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, it is possible to increase the overall performance of system.
Example 2
This example describes the mapping of the Physical Resource Block transmitting two-layer reference signal in a subframe, i.e. k=2.
When Fig. 5 a and Fig. 5 b is subframe employing conventional cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in figure 5 a and 5b, reference signal #1 including the reference signal #0 of layer 1 and layer 2, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbol in time domain.
Below in conjunction with Fig. 5 a, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, #0 and reference signal #1 is mapped in 14 OFDM symbol of Physical Resource Block in the 4th, 7,10,13 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as shown in Figure 5 a, including following process:
nullBy first via reference signal (namely，Reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 4th OFDM symbol is (namely，On 1st subcarrier of the 4th symbol being mapped in subframe by this first reference signal first time slot)、5th subcarrier of the 4th OFDM symbol is (namely，On 5th subcarrier of the 4th symbol being mapped in subframe first time slot)、9th subcarrier of the 4th OFDM symbol is (namely，On 9th subcarrier of the 4th symbol being mapped in subframe first time slot)、3rd subcarrier of the 10th OFDM symbol is (namely，On 3rd subcarrier of the 3rd symbol being mapped in subframe second time slot)、7th subcarrier of the 10th OFDM symbol is (namely，On 7th subcarrier of the 3rd symbol being mapped in subframe second time slot)、11st subcarrier of the 10th OFDM symbol is (namely，On 11st subcarrier of the 3rd symbol being mapped in subframe second time slot)；
nullBy the second tunnel reference signal (namely，Reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 3rd subcarrier of the 7th OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe first time slot)、7th subcarrier of the 7th OFDM symbol is (namely，On 7th subcarrier of last symbol being mapped in subframe first time slot)、11st subcarrier of the 7th OFDM symbol is (namely，On 11st subcarrier of last symbol being mapped in subframe first time slot)、1st subcarrier of the 13rd OFDM symbol is (namely，On 1st subcarrier of the penultimate symbol being mapped in subframe second time slot)、5th subcarrier of the 13rd OFDM symbol is (namely，On 5th subcarrier of the penultimate symbol being mapped in subframe second time slot)、9th subcarrier of the 13rd OFDM symbol is (namely，On 9th subcarrier of the penultimate symbol being mapped in subframe second time slot).
Below in conjunction with Fig. 5 b, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, this reference signal #0 and reference signal #1 is mapped in 14 OFDM symbol of Physical Resource Block in the 6th, 7,13,14 OFDM symbol, namely, first OFDM symbol above corresponds to the 6th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 13rd OFDM symbol, 4th OFDM symbol is corresponding to the 14th OFDM symbol, as shown in Figure 5 b, including following process:
nullBy first via reference signal (namely，Reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol is (namely，On 1st subcarrier of the penultimate symbol being mapped in subframe by this first reference signal first time slot)、5th subcarrier of the 6th OFDM symbol is (namely，On 5th subcarrier of the penultimate symbol being mapped in subframe first time slot)、9th subcarrier of the 6th OFDM symbol is (namely，On 9th subcarrier of the penultimate symbol being mapped in subframe first time slot)、3rd subcarrier of the 13rd OFDM symbol is (namely，On 3rd subcarrier of the penultimate symbol being mapped in subframe second time slot)、7th subcarrier of the 13rd OFDM symbol is (namely，On 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)、11st subcarrier of the 13rd OFDM symbol is (namely，On 11st subcarrier of the penultimate symbol being mapped in subframe second time slot)；
nullBy the second tunnel reference signal (namely，Reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol is (namely，On 1st subcarrier of last symbol being mapped in subframe first time slot)、5th subcarrier of the 7th OFDM symbol is (namely，On 5th subcarrier of last symbol being mapped in subframe first time slot)、9th subcarrier of the 7th OFDM symbol is (namely，On 9th subcarrier of last symbol being mapped in subframe first time slot)、3rd subcarrier of the 14th OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe second time slot)、7th subcarrier of the 14th OFDM symbol is (namely，On 7th subcarrier of last symbol being mapped in subframe second time slot)、11st subcarrier of the 14th OFDM symbol is (namely，On 11st subcarrier of last symbol being mapped in subframe second time slot).
When Fig. 5 c and Fig. 5 d is subframe employing extended cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in Fig. 5 c and Fig. 5 d, reference signal #1 including the reference signal #0 of layer 1 and layer 2, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 12 OFDM symbol in time domain.
Below in conjunction with Fig. 5 c, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, this reference signal #0 and reference signal #1 is mapped in 12 OFDM symbol of Physical Resource Block in the 5th, 6,8,12 OFDM symbol, namely, first OFDM symbol above corresponds to the 5th OFDM symbol, second OFDM symbol is corresponding to the 6th OFDM symbol, 3rd OFDM symbol is corresponding to the 8th OFDM symbol, 4th OFDM symbol is corresponding to the 12nd OFDM symbol, as shown in Figure 5 c, including following process:
nullBy first via reference signal (namely，Reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol is (namely，On 1st subcarrier of the penultimate symbol being mapped in subframe first time slot)、4th subcarrier of the 5th OFDM symbol is (namely，On 4th subcarrier of the penultimate symbol being mapped in subframe first time slot)、7th subcarrier of the 5th OFDM symbol is (namely，On 7th subcarrier of the penultimate symbol being mapped in subframe first time slot)、10th subcarrier of the 5th OFDM symbol is (namely，On 10th subcarrier of the penultimate symbol being mapped in subframe first time slot)、3rd subcarrier of the 8th OFDM symbol is (namely，On 3rd subcarrier of second symbol being mapped in subframe second time slot)、6th subcarrier of the 8th OFDM symbol is (namely，On 6th subcarrier of second symbol being mapped in subframe second time slot)、9th subcarrier of the 8th OFDM symbol is (namely，On 9th subcarrier of second symbol being mapped in subframe second time slot)、11st subcarrier of the 8th OFDM symbol is (namely，On 11st subcarrier of second symbol being mapped in subframe second time slot).
nullBy the second tunnel reference signal (namely，Reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol is (namely，On 1st subcarrier of last symbol being mapped in subframe first time slot)、4th subcarrier of the 6th OFDM symbol is (namely，On 4th subcarrier of last symbol being mapped in subframe first time slot)、7th subcarrier of the 6th OFDM symbol is (namely，On 7th subcarrier of last symbol being mapped in subframe first time slot)、10th subcarrier of the 6th OFDM symbol is (namely，On 10th subcarrier of last symbol being mapped in subframe first time slot)、3rd subcarrier of the 12nd OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe second time slot)、6th subcarrier of the 12nd OFDM symbol is (namely，On 6th subcarrier of last symbol being mapped in subframe second time slot)、9th subcarrier of the 12nd OFDM symbol is (namely，On 9th subcarrier of last symbol being mapped in subframe second time slot)、12nd subcarrier of the 12nd OFDM symbol is (namely，On 12nd subcarrier of last symbol being mapped in subframe second time slot).
Below in conjunction with Fig. 5 d, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, this reference signal #0 and reference signal #1 is mapped in 12 OFDM symbol of Physical Resource Block in the 5th, 6,11,12 OFDM symbol, namely, first OFDM symbol above corresponds to the 5th OFDM symbol, second OFDM symbol is corresponding to the 6th OFDM symbol, 3rd OFDM symbol is corresponding to the 11st OFDM symbol, 4th OFDM symbol is corresponding to the 12nd OFDM symbol, as fig 5d, including following process:
nullBy first via reference signal (namely，Reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol is (namely，On 1st subcarrier of the penultimate symbol being mapped in subframe first time slot)、5th subcarrier of the 5th OFDM symbol is (namely，On 5th subcarrier of the penultimate symbol being mapped in subframe first time slot)、9th subcarrier of the 5th OFDM symbol is (namely，On 9th subcarrier of the penultimate symbol being mapped in subframe first time slot)、3rd subcarrier of the 11st OFDM symbol is (namely，On 3rd subcarrier of the penultimate symbol being mapped in subframe second time slot)、7th subcarrier of the 11st OFDM symbol is (namely，On 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)、11st subcarrier of the 11st OFDM symbol is (namely，On 11st subcarrier of the penultimate symbol being mapped in subframe second time slot).
nullBy the second tunnel reference signal (namely，Reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 3rd subcarrier of the 6th OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe first time slot)、5th subcarrier of the 6th OFDM symbol is (namely，On 5th subcarrier of last symbol being mapped in subframe first time slot)、9th subcarrier of the 6th OFDM symbol is (namely，On 9th subcarrier of last symbol being mapped in subframe first time slot)、3rd subcarrier of the 12nd OFDM symbol is (namely，On 3rd subcarrier of last symbol being mapped in subframe second time slot)、7th subcarrier of the 12nd OFDM symbol is (namely，On 7th subcarrier of last symbol being mapped in subframe second time slot)、11st subcarrier of the 12nd OFDM symbol is (namely，On 11st subcarrier of last symbol being mapped in subframe second time slot).
The pattern schematic diagram of reference signal when example 2 gives k=2, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, it is possible to increase the overall performance of system.
Example 3
This example describes the mapping of the Physical Resource Block transmitting four layers of reference signal in a subframe, i.e. k=4.
Divide three kinds of situations that this example is illustrated below.
Situation one:
When Fig. 6 a is subframe employing conventional cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in Figure 6 a, reference signal #3 including the reference signal #0 of layer 1, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and layer 4, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbol in time domain.
Below in conjunction with Fig. 6 a, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, Reference Signal #0, reference signal #1, reference signal #2 and reference signal #3 is mapped in 14 OFDM symbol of Physical Resource Block the 6th, 7, 13, in 14 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as shown in Figure 6 a, including following process:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol is (namely, on 1st subcarrier of the penultimate symbol being mapped in subframe first time slot), 7th subcarrier of the 6th OFDM symbol is (namely, on 7th subcarrier of the penultimate symbol being mapped in subframe first time slot), 4th subcarrier of the 13rd OFDM symbol is (namely, on 4th subcarrier of the penultimate symbol being mapped in subframe second time slot), 10th subcarrier of the 13rd OFDM symbol is (namely, on 10th subcarrier of the penultimate symbol being mapped in subframe second time slot)；
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol is (namely, on 1st subcarrier of last symbol being mapped in subframe first time slot), 7th subcarrier of the 7th OFDM symbol is (namely, on 7th subcarrier of last symbol being mapped in subframe first time slot), 4th subcarrier of the 14th OFDM symbol is (namely, on 4th subcarrier of last symbol being mapped in subframe second time slot), 10th subcarrier of the 14th OFDM symbol is (namely, on 10th subcarrier of last symbol being mapped in subframe second time slot)；
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol is (namely, on 4th subcarrier of the penultimate symbol being mapped in subframe first time slot), 10th subcarrier of the 6th OFDM symbol is (namely, on 10th subcarrier of the penultimate symbol being mapped in subframe first time slot), 1st subcarrier of the 13rd OFDM symbol is (namely, on 1st subcarrier of the penultimate symbol being mapped in subframe second time slot), 7th subcarrier of the 13rd OFDM symbol is (namely, on 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)；
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 7th OFDM symbol is (namely, on 4th subcarrier of last symbol being mapped in subframe first time slot), 10th subcarrier of the 7th OFDM symbol is (namely, on 10th subcarrier of last symbol being mapped in subframe first time slot), 1st subcarrier of the 14th OFDM symbol is (namely, on 1st subcarrier of last symbol being mapped in subframe second time slot), 7th subcarrier of the 14th OFDM symbol is (namely, on 7th subcarrier of last symbol being mapped in subframe second time slot).
When Fig. 6 b is subframe employing extended cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in Figure 6 b, reference signal #3 including the reference signal #0 of layer 1, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and layer 4, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 12 OFDM symbol in time domain.
Below in conjunction with Fig. 6 b, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, Reference Signal #0, reference signal #1, reference signal #2 and reference signal #3 is mapped in 12 OFDM symbol of Physical Resource Block the 5th, 6, 11, in 12 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as shown in Figure 6 b, including following process:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 1st subcarrier of the 5th OFDM symbol is (namely, on 1st subcarrier of the penultimate symbol being mapped in subframe first time slot), 7th subcarrier of the 5th OFDM symbol is (namely, on 7th subcarrier of the penultimate symbol being mapped in subframe first time slot), 4th subcarrier of the 11st OFDM symbol is (namely, on 4th subcarrier of the penultimate symbol being mapped in subframe second time slot), 10th subcarrier of the 11st OFDM symbol is (namely, on 10th subcarrier of the penultimate symbol being mapped in subframe second time slot)；
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 6th OFDM symbol is (namely, on 1st subcarrier of last symbol being mapped in subframe first time slot), 7th subcarrier of the 6th OFDM symbol is (namely, on 7th subcarrier of last symbol being mapped in subframe first time slot), 4th subcarrier of the 12nd OFDM symbol is (namely, on 4th subcarrier of last symbol being mapped in subframe second time slot), 10th subcarrier of the 12nd OFDM symbol is (namely, on 10th subcarrier of last symbol being mapped in subframe second time slot)；
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol is (namely, on 4th subcarrier of the penultimate symbol being mapped in subframe first time slot), 10th subcarrier of the 6th OFDM symbol is (namely, on 10th subcarrier of the penultimate symbol being mapped in subframe first time slot), 1st subcarrier of the 11st OFDM symbol is (namely, on 1st subcarrier of the penultimate symbol being mapped in subframe second time slot), 7th subcarrier of the 11st OFDM symbol is (namely, on 7th subcarrier of the penultimate symbol being mapped in subframe second time slot)；
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 6th OFDM symbol is (namely, on 4th subcarrier of last symbol being mapped in subframe first time slot), 10th subcarrier of the 6th OFDM symbol is (namely, on 10th subcarrier of last symbol being mapped in subframe first time slot), 1st subcarrier of the 12nd OFDM symbol is (namely, on 1st subcarrier of last symbol being mapped in subframe second time slot), 7th subcarrier of the 12nd OFDM symbol is (namely, on 7th subcarrier of last symbol being mapped in subframe second time slot).
Situation two
When Fig. 6 c is subframe employing conventional cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as fig. 6 c, reference signal #3 including the reference signal #0 of layer 1, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and layer 4, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbol in time domain.
Below in conjunction with Fig. 6 c, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, Reference Signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 14 OFDM symbol of Physical Resource Block in the 5th, 8,9,12 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as fig. 6 c, including following process:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 2nd subcarrier of the 5th OFDM symbol is (namely, on 2nd subcarrier of the third last symbol being mapped in subframe first time slot), 8th subcarrier of the 5th OFDM symbol is (namely, on 8th subcarrier of the third last symbol being mapped in subframe first time slot), 5th subcarrier of the 9th OFDM symbol is (namely, on 5th subcarrier of second symbol being mapped in subframe second time slot), 11st subcarrier of the 9th OFDM symbol is (namely, on 11st subcarrier of second symbol being mapped in subframe second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 2nd subcarrier of the 8th OFDM symbol is (namely, on 2nd subcarrier of first symbol being mapped in subframe second time slot), 8th subcarrier of the 8th OFDM symbol is (namely, on 8th subcarrier of first symbol being mapped in subframe second time slot), 5th subcarrier of the 12nd OFDM symbol is (namely, on 5th subcarrier of the third last symbol being mapped in subframe second time slot), 11st subcarrier of the 12nd OFDM symbol is (namely, on 11st subcarrier of the third last symbol being mapped in subframe second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th subcarrier of the 5th OFDM symbol is (namely, on 5th subcarrier of the third last symbol being mapped in subframe first time slot), 11st subcarrier of the 5th OFDM symbol is (namely, on 11st subcarrier of the third last symbol being mapped in subframe first time slot), 2nd subcarrier of the 9th OFDM symbol is (namely, on 2nd subcarrier of second symbol being mapped in subframe second time slot), 8th subcarrier of the 9th OFDM symbol is (namely, on 8th subcarrier of second symbol being mapped in subframe second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th subcarrier of the 8th OFDM symbol is (namely, on 5th subcarrier of first symbol being mapped in subframe second time slot), 10th subcarrier of the 8th OFDM symbol is (namely, on 10th subcarrier of first symbol being mapped in subframe second time slot), 2nd subcarrier of the 12nd OFDM symbol is (namely, on 2nd subcarrier of the third last symbol being mapped in subframe second time slot), 8th subcarrier of the 12nd OFDM symbol is (namely, on 8th subcarrier of the third last symbol being mapped in subframe second time slot).
When Fig. 6 d is subframe employing extended cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in fig 6d, reference signal #3 including the reference signal #0 of layer 1, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and layer 4, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 12 OFDM symbol in time domain.
Below in conjunction with Fig. 6 d, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, Reference Signal #0, reference signal #1, reference signal #2 and reference signal #3 are mapped in 12 OFDM symbol of Physical Resource Block in the 4th, 7,8,10 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as shown in fig 6d, including following process:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 2nd subcarrier of the 4th OFDM symbol is (namely, on 2nd subcarrier of the third last symbol being mapped in subframe first time slot), 8th subcarrier of the 4th OFDM symbol is (namely, on 8th subcarrier of the third last symbol being mapped in subframe first time slot), 5th subcarrier of the 8th OFDM symbol is (namely, on 5th subcarrier of second symbol being mapped in subframe second time slot), 11st subcarrier of the 8th OFDM symbol is (namely, on 11st subcarrier of second symbol being mapped in subframe second time slot).
Second tunnel reference signal is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 2nd subcarrier of the 7th OFDM symbol is (namely, on 2nd subcarrier of first symbol being mapped in subframe second time slot), 8th subcarrier of the 7th OFDM symbol is (namely, on 8th subcarrier of first symbol being mapped in subframe second time slot), 5th subcarrier of the 10th OFDM symbol is (namely, on 5th subcarrier of the third last symbol being mapped in subframe second time slot), 11st subcarrier of the 10th OFDM symbol is (namely, on 11st subcarrier of the third last symbol being mapped in subframe second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th subcarrier of the 4th OFDM symbol is (namely, on 5th subcarrier of the third last symbol being mapped in subframe first time slot), 11st subcarrier of the 4th OFDM symbol is (namely, on 11st subcarrier of the third last symbol being mapped in subframe first time slot), 2nd subcarrier of the 8th OFDM symbol is (namely, on 2nd subcarrier of second symbol being mapped in subframe second time slot), 8th subcarrier of the 8th OFDM symbol is (namely, on 8th subcarrier of second symbol being mapped in subframe second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th subcarrier of the 7th OFDM symbol is (namely, on 5th subcarrier of first symbol being mapped in subframe second time slot), 10th subcarrier of the 7th OFDM symbol is (namely, on 10th subcarrier of first symbol being mapped in subframe second time slot), 2nd subcarrier of the 10th OFDM symbol is (namely, on 2nd subcarrier of the third last symbol being mapped in subframe second time slot), 8th subcarrier of the 10th OFDM symbol is (namely, on 8th subcarrier of the third last symbol being mapped in subframe second time slot).
Situation three
When Fig. 6 e is subframe employing conventional cyclic prefix, reference signal situation schematic diagram in Physical Resource Block, as shown in fig 6e, reference signal #3 including the reference signal #0 of layer 1, the reference signal #1 of layer 2, the reference signal #2 of layer 3 and layer 4, and this Physical Resource Block comprises 12 subcarriers at frequency domain, comprise 14 OFDM symbol in time domain.
Below in conjunction with Fig. 6 e, the Physical Resource Block mapping of reference signal #0 and reference signal #1 is illustrated, Reference Signal #0, reference signal #1, reference signal #2 and reference signal #3 is mapped in 14 OFDM symbol of Physical Resource Block the 4th, 7, 10, in 13 OFDM symbol, namely, first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol is corresponding to the 7th OFDM symbol, 3rd OFDM symbol is corresponding to the 10th OFDM symbol, 4th OFDM symbol is corresponding to the 13rd OFDM symbol, as shown in fig 6e, including following process:
First via reference signal is mapped to the following time-frequency location of above-mentioned Physical Resource Block (namely, reference signal #0) (A=1): the 1st subcarrier of the 4th OFDM symbol is (namely, on 1st subcarrier of the 4th symbol being mapped in subframe first time slot), 7th subcarrier of the 4th OFDM symbol is (namely, on 7th subcarrier of the 4th symbol being mapped in subframe first time slot), 4th subcarrier of the 10th OFDM symbol is (namely, on 4th subcarrier of the 3rd symbol being mapped in subframe second time slot), 10th subcarrier of the 10th OFDM symbol is (namely, on 10th subcarrier of the 3rd symbol being mapped in subframe second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 1st subcarrier of the 7th OFDM symbol is (namely, on 1st subcarrier of last symbol being mapped in subframe first time slot), 7th subcarrier of the 7th OFDM symbol is (namely, on 7th subcarrier of last symbol being mapped in subframe first time slot), 4th subcarrier of the 13rd OFDM symbol is (namely, on 4th subcarrier of the penultimate symbol being mapped in subframe second time slot), 10th subcarrier of the 13rd OFDM symbol is (namely, on 10th subcarrier of the penultimate symbol being mapped in subframe second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 4th OFDM symbol is (namely, on 4th subcarrier of the 4th symbol being mapped in subframe first time slot), 10th subcarrier of the 4th OFDM symbol is (namely, on 10th subcarrier of the 4th symbol being mapped in subframe first time slot), 1st subcarrier of the 10th OFDM symbol is (namely, on 1st subcarrier of the 3rd symbol being mapped in subframe second time slot), 7th subcarrier of the 10th OFDM symbol is (namely, on 7th subcarrier of the 3rd symbol being mapped in subframe second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th subcarrier of the 7th OFDM symbol is (namely, on 4th subcarrier of last symbol being mapped in subframe first time slot), 10th subcarrier of the 7th OFDM symbol is (namely, on 10th subcarrier of last symbol being mapped in subframe first time slot), 1st subcarrier of the 13rd OFDM symbol is (namely, on 1st subcarrier of the penultimate symbol being mapped in subframe second time slot), 7th subcarrier of the 13rd OFDM symbol is (namely, on 7th subcarrier of the penultimate symbol being mapped in subframe second time slot).
Alternatively, in the mapping process described by example 3, it is possible to any 1 tunnel (any 1 floor) reference signal mapped in Physical Resource Block is replaced with data.
The pattern schematic diagram of reference signal when example 3 gives k=2, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, it is possible to increase the overall performance of system.
Example 4
In this example, Physical Resource Block is mapped with k road (floor) reference signal, and during k=8, is described more fully below in this example reference signal position in Physical Resource Block.
When Cyclic Prefix is conventional cyclic prefix time, reference signal position in Physical Resource Block can be as shown in Figure 7a.In figure 7 a, the OFDM symbol being mapped with reference signal is the six, the seven of Physical Resource Block, 13,14 OFDM symbol.Concrete mapping situation is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 6th OFDM symbol, on the 4th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 10th subcarrier of the 13rd OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 7th subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 4th subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 10th subcarrier on.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 13rd OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 10th subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 1st subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 7th subcarrier on.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 6th OFDM symbol, on the 5th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 11st subcarrier of the 13rd OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 2nd subcarrier on, 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 8th subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 5th subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 11st subcarrier on.
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 6th OFDM symbol, on the 2nd subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 8th subcarrier of the 13rd OFDM symbol.
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 5th subcarrier on, 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 11st subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 2nd subcarrier on, 14th OFDM symbol is (namely, last OFDM symbol of second time slot) the 8th subcarrier on.
When Cyclic Prefix is extended cyclic prefix time, these reference signals position in Physical Resource Block can be as shown in Figure 7b, in fig .7b, the OFDM symbol being mapped with reference signal is the five, the six, 11,12 OFDM symbol, and concrete mapping position is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 5th OFDM symbol, on the 4th subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 10th subcarrier of the 11st OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, the 6th OFDM symbol (namely, last OFDM symbol of first time slot) the 7th subcarrier on, on the 4th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot),
On 10th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 5th OFDM symbol, on the 1st subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 11st OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 10th subcarrier on, 12nd OFDM symbol is (namely, last OFDM symbol of second time slot) the 1st subcarrier on, 12nd OFDM symbol is (namely, last OFDM symbol of second time slot) the 7th subcarrier on.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 5th OFDM symbol, on the 5th subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 11st subcarrier of the 11st OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 2nd subcarrier on, the 6th OFDM symbol (namely, last OFDM symbol of first time slot) the 8th subcarrier on, on the 5th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot),
On 11st subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 5th OFDM symbol, on the 2nd subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 8th subcarrier of the 11st OFDM symbol.
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 5th subcarrier on, 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 11st subcarrier on, 12nd OFDM symbol is (namely, last OFDM symbol of second time slot) the 2nd subcarrier on, 12nd OFDM symbol is (namely, last OFDM symbol of second time slot) the 8th subcarrier on.
In addition, when Cyclic Prefix is conventional cyclic prefix time, these reference signals position in Physical Resource Block can also as shown in Figure 7 c, in figure 7 c, the OFDM symbol being mapped with reference signal is the five, the eight, nine, 12 OFDM symbol, and concrete mapping position is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 5th OFDM symbol, on the 5th subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot), on the 11st subcarrier of the 9th OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 2nd subcarrier on, on the 8th subcarrier of the 8th OFDM symbol, on the 5th subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 11st subcarrier of the 12nd OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 5th OFDM symbol, on the 2nd subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot), on the 8th subcarrier of the 9th OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 5th subcarrier on, on the 11st subcarrier of the 8th OFDM symbol, on the 2nd subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 8th subcarrier of the 12nd OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 3rd subcarrier on, on the 9th subcarrier of the 5th OFDM symbol, on the 6th subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot), on the 12nd subcarrier of the 9th OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 3rd subcarrier on, on the 9th subcarrier of the 8th OFDM symbol, on the 6th subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 12nd subcarrier of the 12nd OFDM symbol.
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 6th subcarrier on, on the 12nd subcarrier of the 5th OFDM symbol, on the 3rd subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot), on the 9th subcarrier of the 9th OFDM symbol.
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 6th subcarrier on, on the 12nd subcarrier of the 8th OFDM symbol, on the 3rd subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 9th subcarrier of the 12nd OFDM symbol.
In addition, when Cyclic Prefix is extended cyclic prefix time, these reference signals position in Physical Resource Block can also as shown in figure 7d, in figure 7d, the OFDM symbol being mapped with reference signal is the four, the seven, eight, ten OFDM symbol, and concrete mapping position is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot), on the 11st subcarrier of the 8th OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 2nd subcarrier on, on the 8th subcarrier of the 7th OFDM symbol, on the 5th subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 11st subcarrier of the tenth OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot), on the 8th subcarrier of the 8th OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 5th subcarrier on, on the 11st subcarrier of the 7th OFDM symbol, on the 2nd subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 8th subcarrier of the tenth OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 3rd subcarrier on, on the 9th subcarrier of the 4th OFDM symbol, on the 6th subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot), on the 12nd subcarrier of the 8th OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 3rd subcarrier on, on the 9th subcarrier of the 7th OFDM symbol, on the 6th subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 12nd subcarrier of the tenth OFDM symbol.
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 6th subcarrier on, on the 12nd subcarrier of the 4th OFDM symbol, on the 3rd subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot), on the 9th subcarrier of the 8th OFDM symbol.
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 6th subcarrier on, on the 12nd subcarrier of the 7th OFDM symbol, on the 3rd subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot), on the 9th subcarrier of the tenth OFDM symbol.
In addition, when Cyclic Prefix is conventional cyclic prefix time, these reference signals position in Physical Resource Block can also as shown in figure 7e, in figure 7e, the OFDM symbol being mapped with reference signal is the four, the seven, ten, 13 OFDM symbol, and concrete mapping position is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 4th OFDM symbol, on the 4th subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot), on the 10th subcarrier of the tenth OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 10th subcarrier of the 13rd OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 4th OFDM symbol, on the 1st subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot), on the 7th subcarrier of the tenth OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 13rd OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot), on the 11st subcarrier of the tenth OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 7th OFDM symbol, on the 5th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 11st subcarrier of the 13rd OFDM symbol.
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot), on the 8th subcarrier of the tenth OFDM symbol.
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 7th OFDM symbol, on the 2nd subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 8th subcarrier of the 13rd OFDM symbol.
When to reference signal will be k road (k floor) and k=8 below, adopt and illustrate according to the mapping position in Physical Resource Block of the reference signal after the mapping method of the present invention.
Example 5
In this example, 8 tunnel reference signals are mapped in 4 OFDM symbol.
When Cyclic Prefix is conventional cyclic prefix time, reference signal position in Physical Resource Block can be as shown in Figure 8 a.In Fig. 8 a, the OFDM symbol being mapped with reference signal is the six, the seven of Physical Resource Block, 13,14 OFDM symbol.Concrete mapping situation is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot).
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot).
When Cyclic Prefix is extended cyclic prefix time, reference signal position in Physical Resource Block can be as shown in Figure 8 b.In figure 8b, the OFDM symbol being mapped with reference signal is the five, the six of Physical Resource Block, 11,12 OFDM symbol.Concrete mapping situation is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot).
Additionally, when Cyclic Prefix is conventional cyclic prefix time, reference signal position in Physical Resource Block can be as shown in Figure 8 c.In Fig. 8 c, the OFDM symbol being mapped with reference signal is the five, the eight of Physical Resource Block, nine, 12 OFDM symbol.Concrete mapping situation is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 2nd subcarrier on, on the 8th subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 8th subcarrier on, on the 2nd subcarrier of the 8th OFDM symbol (that is, first OFDM symbol of second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, last OFDM symbol of second time slot) the 8th subcarrier on, on the 2nd subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 10th subcarrier on, on the 5th subcarrier of the 9th OFDM symbol (that is, second OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 8th OFDM symbol is (namely, first OFDM symbol of second time slot) the 11st subcarrier on, on the 5th subcarrier of the 12nd OFDM symbol (that is, the third last OFDM symbol of second time slot).
Additionally, when Cyclic Prefix is extended cyclic prefix time, reference signal position in Physical Resource Block can be as shown in figure 8d.In figure 8d, the OFDM symbol being mapped with reference signal is the four, the seven of Physical Resource Block, eight, ten OFDM symbol.Concrete mapping situation is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=2) of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 2nd subcarrier on, on the 8th subcarrier of the tenth OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 8th subcarrier on, on the 2nd subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 8th subcarrier on, on the 2nd subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 5th subcarrier on, on the 11st subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, the third last OFDM symbol of first time slot) the 11st subcarrier on, on the 5th subcarrier of the 8th OFDM symbol (that is, second OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, first OFDM symbol of second time slot) the 11st subcarrier on, on the 5th subcarrier of the tenth OFDM symbol (that is, the third last OFDM symbol of second time slot).
Additionally, the mapping situation of this example can also with reference to the mapping mode shown in Fig. 8 e.
As figure 8 e shows, when Cyclic Prefix is conventional cyclic prefix time, the OFDM symbol being mapped with reference signal can be the four, the seven, ten, 13 OFDM symbol, and reference signal particular location in Physical Resource Block is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot).
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot).
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 13rd OFDM symbol (that is, the third last OFDM symbol of second time slot).
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the tenth OFDM symbol (that is, the 3rd OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot).
Example 6
In this example, 8 tunnel reference signals are mapped in 6 OFDM symbol.
On the one hand, when subframe adopts conventional cyclic prefix, as shown in Figure 9, the symbol being mapped with reference signal is the 4 in Physical Resource Block, six, seven, 11, 13, 14 OFDM symbol, by first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on 7th subcarrier of the 6th OFDM symbol, 13rd OFDM symbol is (namely, the penultimate OFDM symbol of second time slot) the 4th subcarrier on, on 10th subcarrier of the 13rd OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 7th OFDM symbol, on the 4th subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot), on the 10th subcarrier of the 14th OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 13rd OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot), on the 7th subcarrier of the 14th OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 7th subcarrier on, on the 1st subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 10th subcarrier on, on the 4th subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot).
On the other hand, when subframe adopts extended cyclic prefix, as shown in Figure 10, the symbol being mapped with reference signal is the 4 in Physical Resource Block, five, six, ten, 11, 12 OFDM symbol, as shown in Figure 10, by first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 1st subcarrier on, on 7th subcarrier of the 5th OFDM symbol, 11st OFDM symbol is (namely, the penultimate OFDM symbol of second time slot) the 4th subcarrier on, on 10th subcarrier of the 11st OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 6th OFDM symbol, on the 4th subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot), on the 10th subcarrier of the 12nd OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 5th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 5th OFDM symbol, on the 1st subcarrier of the 11st OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 11st OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 12nd OFDM symbol (that is, last OFDM symbol of second time slot), on the 7th subcarrier of the 12nd OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the tenth OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 6th tunnel reference signal (namely, reference signal #5) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 8th subcarrier on, on the 2nd subcarrier of the tenth OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the tenth OFDM symbol (that is, the 4th OFDM symbol of second time slot).
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 11st subcarrier on, on the 5th subcarrier of the tenth OFDM symbol (that is, the 4th OFDM symbol of second time slot).
Example 7
In this example 8 tunnel reference signals are mapped in 6 OFDM symbol.
When subframe adopts conventional cyclic prefix, as shown in figure 11, the symbol being mapped with reference signal is the four, the six in Physical Resource Block, seven, 11,13,14 OFDM symbol, and as shown in figure 11, concrete mapping mode is as follows:
By first via reference signal (namely, reference signal #0) it is mapped to the following time-frequency location (A=1) of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) on the 1st subcarrier, the 7th subcarrier in the 6th OFDM symbol, the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot) the 4th subcarrier on, on the 10th subcarrier of the 13rd OFDM symbol.
By the second tunnel reference signal (namely, reference signal #1) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 7th OFDM symbol, on the 4th subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot), on the 10th subcarrier of the 14th OFDM symbol.
By the 3rd tunnel reference signal (namely, reference signal #2) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 6th OFDM symbol is (namely, the penultimate OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 6th OFDM symbol, on the 1st subcarrier of the 13rd OFDM symbol (that is, the penultimate OFDM symbol of second time slot), on the 7th subcarrier of the 13rd OFDM symbol.
By the 4th tunnel reference signal (namely, reference signal #3) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 7th OFDM symbol is (namely, last OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 7th OFDM symbol, on the 1st subcarrier of the 14th OFDM symbol (that is, last OFDM symbol of second time slot), on the 7th subcarrier of the 14th OFDM symbol.
By the 5th tunnel reference signal (namely, reference signal #4) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 1st subcarrier on, on the 7th subcarrier of the 4th OFDM symbol, on the 4th subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot), on the 10th subcarrier of the 11st OFDM symbol.
(namely 6th tunnel reference signal is put, reference signal #5) it is mapped to the following time-frequency position of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 4th subcarrier on, on the 10th subcarrier of the 4th OFDM symbol, on the 1st subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot), on the 7th subcarrier of the 11st OFDM symbol.
By the 7th tunnel reference signal (namely, reference signal #6) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 2nd subcarrier on, on the 8th subcarrier of the 4th OFDM symbol, on the 5th subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot), on the 11st subcarrier of the 11st OFDM symbol.
By the 8th tunnel reference signal (namely, reference signal #7) it is mapped to the following time-frequency location of above-mentioned Physical Resource Block: the 4th OFDM symbol is (namely, 4th OFDM symbol of first time slot) the 5th subcarrier on, on the 11st subcarrier of the 4th OFDM symbol, on the 2nd subcarrier of the 11st OFDM symbol (that is, the 4th OFDM symbol of second time slot), on the 8th subcarrier of the 11st OFDM symbol.
Alternatively, in the mapping process described by example 4, example 5, example 6, example 7, it is possible to any 1 tunnel (any 1 floor) mapped in Physical Resource Block, any 2 tunnels (any 2 floor) or any 3 tunnels (any 3 floor) reference signal are replaced with data.
The pattern schematic diagram of reference signal when example 4 to example 7 gives k=8, has filled up the blank of prior art, and, based on the mapping method of the reference signal of this pattern, it is possible to increase the overall performance of system.
As mentioned above, mapping method by means of reference signal provided by the invention and Physical Resource Block, by clearly based on each reference signal of layer position in Physical Resource Block, fill up the blank of prior art, by the resource block mapping scheme of reference signal of the present invention, it is possible to increase the overall performance of system.
It should be noted that the present invention is only for examples detailed above for technical scheme is described, but it is not limited to this, adopts the mapping scheme of reference signal of inventive concept 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.Such as, in example 7, mapping pattern as shown in figure 11, first via reference signal, the second tunnel reference signal, the 3rd tunnel reference signal, the 4th tunnel reference signal, the 5th tunnel reference signal, the 6th tunnel reference signal, the 7th tunnel reference signal, the 8th tunnel reference signal initial frequency-domain position all identical, for A=1.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.

Claims (31)

1. the mapping method of a reference signal and Physical Resource Block, for one or more reference signal is mapped to Physical Resource Block, wherein, described Physical Resource Block includes two continuous slots that time domain length is equal, further, described Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal, it is characterized in that, including:
Being mapped in N number of OFDM symbol and the OFDM symbol of described Physical Resource Block by one or more reference signal described, wherein, the value of N is one below: 3,4,6；
For being mapped to the reference signal of same time domain, the frequency domain interval of same road reference signal being set to M subcarrier, wherein, the value of M is one below: 3,4,6,12；
Wherein, if multichannel reference signal is 2 tunnels, and this 2 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+4) individual subcarrier of described first OFDM symbol, (A+8) individual subcarrier of described first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described 3rd OFDM symbol, (A+10) mod12 subcarrier of described 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+4) individual subcarrier of described second OFDM symbol, (A+8) individual subcarrier of described second OFDM symbol, (A+2) individual subcarrier of 4th OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described 4th OFDM symbol, (A+10) mod12 subcarrier of described 4th OFDM symbol；Wherein, A=1,2,3,4；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+3) individual subcarrier of described first OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, (A+2) individual subcarrier of 3rd OFDM symbol of described 4 OFDM symbol, (A+5) individual subcarrier of described 3rd OFDM symbol, (A+8) individual subcarrier of described 3rd OFDM symbol, (A+11) mod12 subcarrier of described 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (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 4th OFDM symbol of described 4 OFDM symbol, (A+5) individual subcarrier of described 4th OFDM symbol, (A+8) individual subcarrier of described 4th OFDM symbol, (A+11) mod12 subcarrier of described 4th OFDM symbol；Wherein, A=1,2,3,4.
2. method according to claim 1, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts conventional cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 4th OFDM symbol、(A+4) individual subcarrier of 4th OFDM symbol、(A+8) individual subcarrier of 4th OFDM symbol、(A+2) individual subcarrier of 7th OFDM symbol、(A+6) individual subcarrier of 7th OFDM symbol、(A+10) mod12 subcarrier of 7th OFDM symbol、The A subcarrier of the 10th OFDM symbol、(A+4) individual subcarrier of 10th OFDM symbol、(A+8) individual subcarrier of 10th OFDM symbol、(A+2) individual subcarrier of 13rd OFDM symbol、(A+6) individual subcarrier of 13rd OFDM symbol、(A+10) mod12 subcarrier of 13rd OFDM symbol；
Wherein, A=1,2,3,4.
3. method according to claim 1, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts extended cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 5th OFDM symbol、(A+3) individual subcarrier of 5th OFDM symbol、(A+6) individual subcarrier of 5th OFDM symbol、(A+9) mod12 subcarrier of 5th OFDM symbol、(A+2) individual subcarrier of 8th OFDM symbol、(A+5) individual subcarrier of 8th OFDM symbol、(A+8) individual subcarrier of 8th OFDM symbol、(A+11) mod12 subcarrier of 8th OFDM symbol、The A subcarrier of the 11st OFDM symbol、(A+3) individual subcarrier of 11st OFDM symbol、(A+6) individual subcarrier of 11st OFDM symbol、(A+9) mod12 subcarrier of 11st OFDM symbol；
Wherein, A=1,2,3,4.
4. method according to claim 1, it is characterised in that when described system adopts conventional cyclic prefix, the OFDM symbol being mapped with reference signal is:
6th, 7,13,14 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
5th, 8,9,12 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
4th, 7,10,13 OFDM symbol in 14 OFDM symbol of described Physical Resource Block.
5. method according to claim 1, it is characterised in that when described system adopts extended cyclic prefix, the OFDM symbol being mapped with reference signal is:
5th, 6,9,11 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,11,12 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
4th, 7,8,10 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,8,9 OFDM symbol in 12 OFDM symbol of described Physical Resource Block.
6. method according to claim 1, the ascending arrangement of time-domain position coordinate of described first OFDM symbol, described second OFDM symbol, described 3rd OFDM symbol and described 4th OFDM symbol or descending arrangement.
7. method according to claim 1, described reference signal refers to: based on the reference signal of layer.
8. the mapping method of a reference signal and Physical Resource Block, for one or more reference signal is mapped to Physical Resource Block, wherein, described Physical Resource Block includes two continuous slots that time domain length is equal, further, described Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal, it is characterized in that, including:
Being mapped in N number of OFDM symbol and the OFDM symbol of described Physical Resource Block by one or more reference signal described, wherein, the value of N is one below: 3,4,6；
For being mapped to the reference signal of same time domain, the frequency domain interval of same road reference signal being set to M subcarrier, wherein, the value of M is one below: 3,4,6,12；
Wherein, if multichannel reference signal is 4 tunnels, and this 4 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: second OFDM symbol the A subcarrier of point of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Wherein, A=1,2,3,4,5,6.
9. method according to claim 8, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts conventional cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 4th OFDM symbol、(A+4) individual subcarrier of 4th OFDM symbol、(A+8) individual subcarrier of 4th OFDM symbol、(A+2) individual subcarrier of 7th OFDM symbol、(A+6) individual subcarrier of 7th OFDM symbol、(A+10) mod12 subcarrier of 7th OFDM symbol、The A subcarrier of the 10th OFDM symbol、(A+4) individual subcarrier of 10th OFDM symbol、(A+8) individual subcarrier of 10th OFDM symbol、(A+2) individual subcarrier of 13rd OFDM symbol、(A+6) individual subcarrier of 13rd OFDM symbol、(A+10) mod12 subcarrier of 13rd OFDM symbol；
Wherein, A=1,2,3,4.
10. method according to claim 8, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts extended cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 5th OFDM symbol、(A+3) individual subcarrier of 5th OFDM symbol、(A+6) individual subcarrier of 5th OFDM symbol、(A+9) mod12 subcarrier of 5th OFDM symbol、(A+2) individual subcarrier of 8th OFDM symbol、(A+5) individual subcarrier of 8th OFDM symbol、(A+8) individual subcarrier of 8th OFDM symbol、(A+11) mod12 subcarrier of 8th OFDM symbol、The A subcarrier of the 11st OFDM symbol、(A+3) individual subcarrier of 11st OFDM symbol、(A+6) individual subcarrier of 11st OFDM symbol、(A+9) mod12 subcarrier of 11st OFDM symbol；
Wherein, A=1,2,3,4.
11. method according to claim 8, it is characterised in that if needing the reference signal mapped is 3 tunnels, then the reference signal mapped on the time-frequency location of the arbitrary road reference signal in the described 4 tunnel reference signals mapped is replaced with data.
12. method according to claim 8, it is characterised in that when described system adopts conventional cyclic prefix, the OFDM symbol being mapped with reference signal is:
6th, 7,13,14 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
5th, 8,9,12 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
4th, 7,10,13 OFDM symbol in 14 OFDM symbol of described Physical Resource Block.
13. method according to claim 8, it is characterised in that when described system adopts extended cyclic prefix, the OFDM symbol being mapped with reference signal is:
5th, 6,9,11 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,11,12 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
4th, 7,8,10 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,8,9 OFDM symbol in 12 OFDM symbol of described Physical Resource Block.
14. method according to claim 8, the ascending arrangement of time-domain position coordinate of described first OFDM symbol, described second OFDM symbol, described 3rd OFDM symbol and described 4th OFDM symbol or descending arrangement.
15. method according to claim 8, described reference signal refers to: based on the reference signal of layer.
16. the mapping method of a reference signal and Physical Resource Block, for one or more reference signal is mapped to Physical Resource Block, wherein, described Physical Resource Block includes two continuous slots that time domain length is equal, further, described Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal, it is characterized in that, including:
Being mapped in N number of OFDM symbol and the OFDM symbol of described Physical Resource Block by one or more reference signal described, wherein, the value of N is one below: 3,4,6；
For being mapped to the reference signal of same time domain, the frequency domain interval of same road reference signal being set to M subcarrier, wherein, the value of M is one below: 3,4,6,12；
Wherein, if multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 4 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described second OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+1) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described second OFDM symbol, (A+10) mod12 subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 3rd OFDM symbol of described 4 OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 4 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+1) individual subcarrier of described 3rd OFDM symbol, described 3rd OFDM symbol (A+7) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described second OFDM symbol, (A+7) mod12 subcarrier of described second OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described second OFDM symbol, (A+10) mod12 subcarrier of described second OFDM symbol, (A+1) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+7) mod12 subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol the A subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+3) individual subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 3rd OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol the A subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 3rd OFDM symbol (A+3) individual subcarrier；
Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 4 OFDM symbol, described 4 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described second OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=0,1,2,3,4,5.
17. method according to claim 16, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts conventional cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 4th OFDM symbol、(A+4) individual subcarrier of 4th OFDM symbol、(A+8) individual subcarrier of 4th OFDM symbol、(A+2) individual subcarrier of 7th OFDM symbol、(A+6) individual subcarrier of 7th OFDM symbol、(A+10) mod12 subcarrier of 7th OFDM symbol、The A subcarrier of the 10th OFDM symbol、(A+4) individual subcarrier of 10th OFDM symbol、(A+8) individual subcarrier of 10th OFDM symbol、(A+2) individual subcarrier of 13rd OFDM symbol、(A+6) individual subcarrier of 13rd OFDM symbol、(A+10) mod12 subcarrier of 13rd OFDM symbol；
Wherein, A=1,2,3,4.
18. method according to claim 16, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts extended cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 5th OFDM symbol、(A+3) individual subcarrier of 5th OFDM symbol、(A+6) individual subcarrier of 5th OFDM symbol、(A+9) mod12 subcarrier of 5th OFDM symbol、(A+2) individual subcarrier of 8th OFDM symbol、(A+5) individual subcarrier of 8th OFDM symbol、(A+8) individual subcarrier of 8th OFDM symbol、(A+11) mod12 subcarrier of 8th OFDM symbol、The A subcarrier of the 11st OFDM symbol、(A+3) individual subcarrier of 11st OFDM symbol、(A+6) individual subcarrier of 11st OFDM symbol、(A+9) mod12 subcarrier of 11st OFDM symbol；
Wherein, A=1,2,3,4.
19. method according to claim 16, it is characterised in that
If needing the reference signal mapped is 5 tunnels, then the reference signal mapped on the time-frequency location of any 3 tunnel reference signals in the described 8 tunnel reference signals mapped is replaced with data；
If needing the reference signal mapped is 6 tunnels, then the reference signal mapped on the time-frequency location of any 2 tunnel reference signals in the described 8 tunnel reference signals mapped is replaced with data；
If needing the reference signal mapped is 7 tunnels, then the reference signal mapped on the time-frequency location of the arbitrary road reference signal in the described 8 tunnel reference signals mapped is replaced with data.
20. method according to claim 16, it is characterised in that when described system adopts conventional cyclic prefix, the OFDM symbol being mapped with reference signal is:
6th, 7,13,14 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
5th, 8,9,12 OFDM symbol in 14 OFDM symbol of described Physical Resource Block；Or
4th, 7,10,13 OFDM symbol in 14 OFDM symbol of described Physical Resource Block.
21. method according to claim 16, it is characterised in that when described system adopts extended cyclic prefix, the OFDM symbol being mapped with reference signal is:
5th, 6,9,11 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,11,12 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
4th, 7,8,10 OFDM symbol in 12 OFDM symbol of described Physical Resource Block；Or
5th, 6,8,9 OFDM symbol in 12 OFDM symbol of described Physical Resource Block.
22. method according to claim 16, the ascending arrangement of time-domain position coordinate of described first OFDM symbol, described second OFDM symbol, described 3rd OFDM symbol and described 4th OFDM symbol or descending arrangement.
23. method according to claim 16, described reference signal refers to: based on the reference signal of layer.
24. the mapping method of a reference signal and Physical Resource Block, for one or more reference signal is mapped to Physical Resource Block, wherein, described Physical Resource Block includes two continuous slots that time domain length is equal, further, described Physical Resource Block comprises 12 subcarriers on frequency domain, and every road reference signal all includes multiple reference signal, it is characterized in that, including:
Being mapped in N number of OFDM symbol and the OFDM symbol of described Physical Resource Block by one or more reference signal described, wherein, the value of N is one below: 3,4,6；
For being mapped to the reference signal of same time domain, the frequency domain interval of same road reference signal being set to M subcarrier, wherein, the value of M is one below: 3,4,6,12；
Wherein, if multichannel reference signal is 8 tunnels, and this 8 tunnel reference signal is mapped to 6 OFDM symbol of described Physical Resource Block, then described method includes one below:
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of described the 4th OFDM symbol of 6 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described first OFDM symbol, (A+3) individual subcarrier of the 4th OFDM symbol of described 6 OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, (A+9) mod12 subcarrier of described first OFDM symbol, the A subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+1) individual subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described first OFDM symbol, (A+4) individual subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+10) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+4) individual subcarrier of described first OFDM symbol, (A+10) mod12 subcarrier of described first OFDM symbol, (A+7) mod12 subcarrier of described 4th OFDM symbol, described 4th OFDM symbol (A+1) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, described 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+9) mod12 subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6；
Multiple reference signals in first via reference signal are mapped to following time-frequency location: the A subcarrier of second OFDM symbol of described 6 OFDM symbol, (A+6) individual subcarrier of described second OFDM symbol, (A+3) individual subcarrier of the 5th OFDM symbol of described 6 OFDM symbol, described 5th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described second OFDM symbol, (A+9) mod12 subcarrier of described second OFDM symbol, the A subcarrier of described 5th OFDM symbol, described 5th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location: the A subcarrier of the 3rd OFDM symbol of described 6 OFDM symbol, described 3rd (A+6) individual subcarrier of OFDM symbol, (A+3) individual subcarrier of the 6th OFDM symbol of described 6 OFDM symbol, described 6th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described 3rd OFDM symbol, (A+9) mod12 subcarrier of described 3rd OFDM symbol, the A subcarrier of described 6th OFDM symbol, described 6th OFDM symbol (A+6) individual subcarrier；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location: the A subcarrier of first OFDM symbol of described 6 OFDM symbol, described 6 OFDM symbol (A+6) individual subcarrier of the 4th OFDM symbol；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location: (A+6) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol the A subcarrier；Multiple reference signals in 7th tunnel reference signal are mapped to following time-frequency location: (A+3) individual subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+9) mod12 subcarrier；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location: (A+10) mod12 subcarrier of described first OFDM symbol, described 4th OFDM symbol (A+3) individual subcarrier；Wherein, A=1,2,3,4,5,6.
25. method according to claim 24, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts conventional cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 14 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 4th OFDM symbol、(A+4) individual subcarrier of 4th OFDM symbol、(A+8) individual subcarrier of 4th OFDM symbol、(A+2) individual subcarrier of 7th OFDM symbol、(A+6) individual subcarrier of 7th OFDM symbol、(A+10) mod12 subcarrier of 7th OFDM symbol、The A subcarrier of the 10th OFDM symbol、(A+4) individual subcarrier of 10th OFDM symbol、(A+8) individual subcarrier of 10th OFDM symbol、(A+2) individual subcarrier of 13rd OFDM symbol、(A+6) individual subcarrier of 13rd OFDM symbol、(A+10) mod12 subcarrier of 13rd OFDM symbol；
Wherein, A=1,2,3,4.
26. method according to claim 24, it is characterised in that Dui mono-tunnel reference signal maps, and when system adopts extended cyclic prefix, described Physical Resource Block comprises 12 subcarriers at frequency domain, comprises 12 OFDM symbol in time domain, then described method includes:
nullMultiple reference signals in a described road reference signal are mapped on the following time-frequency location of described Physical Resource Block: the A subcarrier of the 5th OFDM symbol、(A+3) individual subcarrier of 5th OFDM symbol、(A+6) individual subcarrier of 5th OFDM symbol、(A+9) mod12 subcarrier of 5th OFDM symbol、(A+2) individual subcarrier of 8th OFDM symbol、(A+5) individual subcarrier of 8th OFDM symbol、(A+8) individual subcarrier of 8th OFDM symbol、(A+11) mod12 subcarrier of 8th OFDM symbol、The A subcarrier of the 11st OFDM symbol、(A+3) individual subcarrier of 11st OFDM symbol、(A+6) individual subcarrier of 11st OFDM symbol、(A+9) mod12 subcarrier of 11st OFDM symbol；
Wherein, A=1,2,3,4.
27. method according to claim 24, it is characterised in that
If needing the reference signal mapped is 5 tunnels, then the reference signal mapped on the time-frequency location of any 3 tunnel reference signals in the described 8 tunnel reference signals mapped is replaced with data；
If needing the reference signal mapped is 6 tunnels, then the reference signal mapped on the time-frequency location of any 2 tunnel reference signals in the described 8 tunnel reference signals mapped is replaced with data；
If needing the reference signal mapped is 7 tunnels, then the reference signal mapped on the time-frequency location of the arbitrary road reference signal in the described 8 tunnel reference signals mapped is replaced with data.
28. method according to claim 24, it is characterised in that
When described system adopts conventional cyclic prefix, it is mapped with the 4th, 6,7,11,13,14 OFDM symbol in OFDM symbol is described Physical Resource Block 14 OFDM symbol of reference signal；Or
When described system adopts conventional cyclic prefix, it is mapped with the 4th, 6,7,10,11,13 OFDM symbol in OFDM symbol is described Physical Resource Block 14 OFDM symbol of reference signal.
29. method according to claim 24, it is characterised in that
When described system adopts extended cyclic prefix, it is mapped with the 4th, 5,6,10,11,12 OFDM symbol in OFDM symbol is described Physical Resource Block 12 OFDM symbol of reference signal；
When described system adopts extended cyclic prefix, it is mapped with the 5th, 6,8,9,11,12 OFDM symbol in OFDM symbol is described Physical Resource Block 12 OFDM symbol of reference signal.
30. method according to claim 24, it is characterized in that, the ascending arrangement of time-domain position coordinate of described first OFDM symbol, described second OFDM symbol, described 3rd OFDM symbol, described 4th OFDM symbol, described 5th OFDM symbol and described 6th OFDM symbol or descending arrangement.
31. method according to claim 24, described reference signal refers to: based on the reference signal of layer.
CN201610113270.2A 2009-03-17 2009-03-17 Mapping method of reference signal and physical resource block Withdrawn CN105791200A (en)

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