CN102857458A - Pilot frequency symbol determining method and device - Google Patents
Pilot frequency symbol determining method and device Download PDFInfo
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Abstract
The invention discloses a pilot frequency symbol determining method, comprising the steps of allocating different demodulation reference signals (DMRS) for data resource in different packets and carrying out precoding or beam forming processing on the data resource in different packets by utilizing different precoding weights or beam forming weights, wherein different DMRS packets are carried on one or more than one of a second OFDM (orthogonal frequency division multiplexing) symbol, a fourth OFDM symbol, a fifth OFDM symbol and an eighth OFDM symbol of an extension circulation prefix subframe. The invention also discloses a pilot frequency symbol determining device, comprising an allocating unit and a processing unit, wherein the allocating unit is used for allocating different DMRSs for the data resource in different packets, and the processing unit is used for carrying out precoding or beam forming processing on the data resource of different DMRS packets by adopting different precoding weights or beam forming weights. According to the pilot frequency symbol determining method and the pilot frequency symbol determining method disclosed by the invention, the DMRSs of different DMRS packets are respectively carried by corresponding OFDM symbols and sub carriers, interference between channels of different DMRS packets is avoided, and efficient and rapid demodulation on data of different DMRS packets is realized.
Description
Technical field
The present invention relates to the pilot tone bearing technology, relate in particular to a kind of frequency pilot sign and determine method and device.
Background technology
In Long Term Evolution (LTE, Long Term Evolution) Release8/9, for the quality of channel being measured and the data symbol that receives being carried out demodulation, designed public reference signal (CRS, Common Reference Signal).Subscriber equipment (UE, User Equipment) can carry out channel measurement by CRS, thereby determines that UE carries out cell reselection and switches to Target cell.And the measurement of channel quality is to carry out under the UE connection status, and when disturbing rank higher, physical layer can disconnect by the relevant Radio Link connection failure signaling of high level.In LTE Release 10, in order further to improve the average availability of frequency spectrum in residential quarter and the throughput of the cell edge availability of frequency spectrum and each UE, two kinds have been defined respectively with reference to signal: channel information reference signal (CSI-RS, Channel State InformationReference Signal) and demodulated reference signal (DMRS, Demodulation reference signal), wherein, CSI-RS is used for the measurement of channel, can calculate UE by the measurement to CSI-RS need to be to the pre-coding matrix index (PMI of eNB feedback, Precoding Matrix Indicator), channel quality information indication (CQI, Channel Quality Indicator) and order indication (RI, Rank Indicator).Utilize DMRS can make pellucidly downlink data receiving of UE, and need not to know the precoding weights that base station side is used, like this, reducing Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel) when load, also reduced the restriction of code book to weights.In addition, utilize DMRS can also support alone family multiple-input and multiple-output (SU-MIMO, Single User Multiple Input Multiple Output) and multi-user's multiple-input and multiple-output (MU-MIMO, Multiple User Multiple Input Multiple Output) carries out dynamic transparent switching between, utilize DMRS to carry out Interference Estimation, can greatly improve the interference elimination performance of receiver side.
In R8, utilize CRS to carry out the transmission of transmission mode TM1～TM6, also utilize CRS to carry out demodulation for the pattern of this open loop of TM3, only TM1, TM2, TM4～TM6 have been carried out optimization based on the DMRS transmission in R9～R10 stage, this open loop mode of TM3 has not been carried out optimizing based on DMRS.Consider the factors such as energy-conservation, resource saving in future version, CRS need to fade out gradually, so need to design based on DMRS for this open loop sending mode of TM3.At present, not yet have carry out the related art scheme of TM3 open loop sending mode based on DMRS can be for reference.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of frequency pilot sign to determine method and device, and the distribution that can reasonably distribute pilot tone to meet in subframe reduces the interference between different DMRS groups, is conducive to subscriber equipment efficient quick ground demodulated channel.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of frequency pilot sign is determined method, comprising:
The different demodulated reference signal DMRS of data resource distribution for different grouping, the data resource of different DMRS groups uses different precoding weights or beam forming weight to carry out precoding or beam forming is processed, and different DMRS organize one or more on the 2nd, 4,5,8 the OFDM symbol that is carried on the extended cyclic prefix subframe.
Described DMRS is carried on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol of extended cyclic prefix subframe.
Preferably, when described DMRS group was 12, the DMRS of described 12 DMRS group was carried on respectively on the 0th～11 subcarrier.
Preferably, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 4 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 1st, 5 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 6th, 10 subcarrier;
The DMRS of the 4th DMRS group is carried on the 7th, 11 subcarrier.
Preferably, described DMRS is carried on the 1st, 5,7,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 1st, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 11 subcarrier.
Preferably, described DMRS is carried on the 0th, 5,6,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 11 subcarrier.
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe.
Preferably, described DMRS organizes on the 1st, 2,4,5,7,8,10,11 subcarrier that is carried on the 2nd, 5 the OFDM symbol.
Preferably, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier.
Preferably, described DMRS organizes on the 0th, 1,3,4,7,8,10,11 subcarrier that is carried on the 2nd, 5 the OFDM symbol.
Preferably, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,3,4 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 3rd, 4 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier.
Preferably, described DMRS is carried on the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd OFDM symbol and on the 1st, 2,4,5,7,8,10,11 subcarrier of the 5th OFDM symbol.
Preferably, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,2,3,4,5 subcarrier; The DMRS of the 2nd DMRS group is carried on the 6th, 7,8,9,10,11 subcarrier.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on 1,2 subcarrier of the 0th, 1 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on 4,5 subcarriers of the 3rd, 4 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on 7,8 subcarriers of the 6th, 7 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 4th DMRS group is carried on 10,11 subcarriers of the 9th, 10 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol.
Preferably, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe.
Preferably, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,4,5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 7,10,11 subcarrier.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier;
The DMRS of the one DMRS group is carried on the 4th, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 7 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 10th, 11 subcarrier.
Perhaps, described DMRS is carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
Preferably, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1,4,5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 6th, 7,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 0th, 1,4,5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 6th, 7,10,11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 6th, 7 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 0th, 1 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 6th, 7 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, described DMRS is carried on the 1st, 2,4,5,7,8,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 1st, 2,4,5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 1st, 2 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, described DMRS is carried on the 0th, 1,3,4,7,8,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1,3,4 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 0th, 1,3,4 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 3rd, 4 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 0th, 1 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 3rd, 4 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
Preferably, described DMRS is carried on the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd, 5 OFDM symbol of extended cyclic prefix subframe and the 1st, 2,4,5,7,8,10,11 subcarrier of the 4th, 8 OFDM symbol.
Preferably, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier of the 0th, 1,3,4 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 6th, 7,9,10 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 1st, 2,4,5 subcarrier of the 0th, 1,3,4 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 6th, 7,9,10 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol.
Preferably, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier of the 0th, 1 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 3rd, 4 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 6th, 7 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 9th, 10 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 1st, 2 subcarrier of the 0th, 1 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 3rd, 4 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 6th, 7 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 9th, 10 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol.
Preferably, described method also comprises:
Use the multiplexing DMRS of mode that adopts time division multiplexing tdm and/or frequency division multiplexing FDM and/or code division multiplexing CDM; Different DMRS groups are used the weights of identical or different precodings, or use the weights of the different layers of identical precoding weights; Identical DMRS group is used the weights of the identical layer of identical precoding weights or identical precoding weights.
Preferably, when using the different DMRS of resource in the multiplexing same DMRS group of CDM, employed walsh code is [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
A kind of frequency pilot sign is determined device, comprises allocation units, processing unit and load bearing unit, wherein,
Allocation units are used to the data resource of different grouping to distribute different DMRS;
Processing unit is used for the data resource to different DMRS groups, uses different precoding weights or beam forming weight to carry out precoding or beam forming processing;
Load bearing unit is used for different DMRS groups are carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe one or more.
Preferably, described load bearing unit is further used for,
Described DMRS is carried on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
Among the present invention, according to the concrete DMRS group quantity of carrying in the subframe, the DMRS of different DMRS groups is carried on respectively on corresponding the OFDM symbol and subcarrier, has avoided the interference of different DMRS group interchannels, realized the data of the different DMRS groups of efficient quick ground demodulation.
Description of drawings
DMRS mapping schematic diagram when Fig. 1 is 12 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 2 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 3 is 2 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 4 is 2 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 5 is 2 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 6 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 7 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 8 is 8 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Fig. 9 is 2 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 10 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 11 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 12 is 8 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 13 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 14 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 15 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 16 is 8 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 17 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 18 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 19 is 4 DMRS group of the embodiment of the invention;
DMRS mapping schematic diagram when Figure 20 is 8 DMRS group of the embodiment of the invention;
Figure 21 is the composition structural representation that the frequency pilot sign of the embodiment of the invention is determined device.
Embodiment
Basic thought of the present invention is: according to the concrete DMRS group quantity of carrying in the subframe, the DMRS of different DMRS groups is carried on respectively on corresponding the OFDM symbol and subcarrier, avoid the interference of different DMRS group interchannels, realized the data of the different DMRS groups of efficient quick ground demodulation.
Among the present invention, the OFDM symbol in the subframe is all from 0 open numbering, and the subcarrier among the RB is also from 0 open numbering.DMRS group # is wherein just organized in order to distinguish different DMRS with DMRS port label, does not represent inevitable priority number order.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment one
DMRS mapping schematic diagram when Fig. 1 is 12 DMRS group of the embodiment of the invention, as shown in Figure 1, in this example, open loop DMRS pilot tone can be mapped to { 4,5}OFDM symbol.If DMRS group 0～DMRS group 11 RE positions that take are respectively (xn, yn) (n is natural number, n=0～11), wherein x represents the subcarrier sequence number index in the RB, and y represents the index of OFDM symbol.When adopting time division multiplexing to shine upon two DMRS ports, the DMRS mapping mode is: { x (m), y (m) }={ m, (4,5) }, wherein m=011.That is to say that the DMRS of 12 DMRS groups is mapped in respectively on the 11st to the 0th subcarrier of the 4th, 5 OFDM symbol.Among the present invention, { x (m), y (m) } represents array, the subcarrier that x (m) expression DMRS takies, and the OFDM symbol that y (m) expression DMRS takies.Be example with { m, (4,5) }, expression DMRS is carried on m the subcarrier of the 4th, 5 OFDM symbol.In the present invention, above-mentioned form of presentation is applicable to each embodiment, gives unnecessary details no longer one by one.
In each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical or different precodings, different DMRS groups also can adopt the weights of the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment two
DMRS mapping schematic diagram when Fig. 2 is 4 DMRS group of the embodiment of the invention, as shown in Figure 2, in this example, open loop DMRS pilot tone is mapped to { 4,5}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0,4), (4,5) }, and x1, y1}={ (1,5), (4,5) }, { x2, y2}={ (6,10), (4,5) }, { x3, y3}={ (7,11) (4,5) }.Open loop DMRS pilot tone during namely four DMRS organize is mapped on the 0th, 1,4,5,6,7,10,11 subcarrier of the 4th, 5 OFDM symbol.
Alternatively, for each DMRS group, can adopt the mode of TDM or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment three
DMRS mapping schematic diagram when Fig. 3 is 2 DMRS group of the embodiment of the invention, as shown in Figure 3, in this example, open loop DMRS pilot tone can be mapped to { 4,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.When adopting time division multiplexing to shine upon two DMRS ports, DMRS group 0～DMRS group 1 RE that takies is specially: { x0, y0}={ (0,5), (4,5) }, { x1, y1}={ (6,11), (4,5) }.Open loop DMRS pilot tone during namely two DMRS organize is mapped on the 0th, 5,6,11 subcarrier of the 4th, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of TDM or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment four
DMRS mapping schematic diagram when Fig. 4 is 2 DMRS group of the embodiment of the invention, as shown in Figure 4, in this example, open loop DMRS pilot tone can be mapped to { 4,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.When adopting time division multiplexing to shine upon two DMRS ports, the Resource Unit of DMRS group 0～DMRS group 1 mapping is respectively: { x0, y0}={ (1,5), (4,5) }, { x1, y1}={{ (7,11) (4,5) }.Open loop DMRS pilot tone during namely two DMRS organize can be mapped on the 1st, 5,7,11 subcarrier of the 4th, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment five
DMRS mapping schematic diagram when Fig. 5 is 2 DMRS group of the embodiment of the invention, as shown in Figure 5, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 1 mapping is respectively in this example: { x0, y0}={ (0, Isosorbide-5-Nitrae, 5), (2,5) }, { x1, y1}={ (6,7,10,11), (2,5) }.Open loop DMRS pilot tone during namely two DMRS organize can be mapped on the 0th, 1,4,5,6,7,10,11 subcarrier of the 4th, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment six
DMRS mapping schematic diagram when Fig. 6 is 4 DMRS group of the embodiment of the invention, as shown in Figure 6, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0, Isosorbide-5-Nitrae, 5), (2,4) }, and x1, y1}={ (6,7,10,11), (2,4) }, { x2, y2}={ (0, Isosorbide-5-Nitrae, 5), (5,8) }, and x3, y3}={ (6,7,10,11), (5,8) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 0th, 1,4,5,6,7,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment seven
DMRS mapping schematic diagram when Fig. 7 is 4 DMRS group of the embodiment of the invention, as shown in Figure 7, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0,1), (2,5) }, and x1, y1}={ (4,5), (2,5) }, { x2, y2}={ (6,7), (2,5) }, { x3, y3}={ (10,11), (2,5) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 0th, 1,4,5,6,7,10,11 subcarrier of the 2nd, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment eight
DMRS mapping schematic diagram when Fig. 8 is 8 DMRS group of the embodiment of the invention, as shown in Figure 8, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 7 RE positions that take are respectively (xn, yn) (n=0～7), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0,1), (2,4) }, { x1, y1}={ (4,5), (2,4) }, and x2, y2}={ (6,7), (2,4) }, { x3, y3}={ (10,11), (2,4) }, { x4, y4}={ (0,1), (5,8) }, { x5, y5}={ (4,5), (5,8) }, and x6, y6}={ (6,7), (5,8) }, { x7, y7}={ (10,11), (5,8) }.Open loop DMRS pilot tone during namely 8 DMRS organize can be mapped on the 0th, 1,4,5,6,7,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment nine
DMRS mapping schematic diagram when Fig. 9 is 2 DMRS group of the embodiment of the invention, as shown in Figure 9, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 1 mapping is respectively: { x0, y0}={ (1,2,4,5), (2,5) }, { x1, y1}={ (7,8,10,11), (2,5) }.Open loop DMRS pilot tone during namely 2 DMRS organize can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment ten
DMRS mapping schematic diagram when Figure 10 is 4 DMRS group of the embodiment of the invention, as shown in figure 10, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (1,2,4,5), (2,4) }, and x1, y1}={ (7,8,10,11), (2,4) }, { x2, y2}={ (1,2,4,5), (5,8) }, and x3, y3}={ (7,8,10,11), (5,8) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 11
DMRS mapping schematic diagram when Figure 11 is 4 DMRS group of the embodiment of the invention, as shown in figure 11, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (1,2), (2,5) }, and x1, y1}={ (4,5), (2,5) }, { x2, y2}={ (7,8), (2,5) }, { x3, y3}={ (10,11), (2,5) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 2nd, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 12
DMRS mapping schematic diagram when Figure 12 is 8 DMRS group of the embodiment of the invention, as shown in figure 12, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 7 RE positions that take are respectively (xn, yn) (n=0～7), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 7 mappings is respectively: { x0, y0}={ (1,2), (2,4) }, { x1, y1}={ (4,5), (2,4) }, and x2, y2}={ (7,8), (2,4) }, { x3, y3}={ (10,11), (2,4) }, { x4, y4}={ (1,2), (5,8) }, { x5, y5}={ (4,5), (5,8) }, and x6, y6}={ (7,8), (5,8) }, { x7, y7}={ (10,11), (5,8) }.Open loop DMRS pilot tone during namely 8 DMRS organize can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 13
DMRS mapping schematic diagram when Figure 13 is 2 DMRS group of the embodiment of the invention, as shown in figure 13, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 1 mapping is respectively: { x0, y0}={ (0,1,3,4), (2,5) }, { x1, y1}={ (7,8,10,11), (2,5) }.Open loop DMRS pilot tone during namely 2 DMRS organize can be mapped on the 0th, 1,3,4,7,8,10,11 subcarrier of the 2nd, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 14
DMRS mapping schematic diagram when Figure 14 is 4 DMRS group of the embodiment of the invention, as shown in figure 14, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0,1,3,4), (2,4) }, and x1, y1}={ (7,8,10,11), (2,4) }, { x2, y2}={ (0,1,3,4), (5,8) }, and x3, y3}={ (7,8,10,11), (5,8) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 0th, 1,3,4,7,8,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 15
DMRS mapping schematic diagram when Figure 15 is 4 DMRS group of the embodiment of the invention, as shown in figure 15, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={ (0,1), (2,5) }, and x1, y1}={ (3,4), (2,5) }, { x2, y2}={ (7,8), (2,5) }, { x3, y3}={ (10,11), (2,5) }.Open loop DMRS pilot tone during namely 4 DMRS organize can be mapped on the 0th, 1,3,4,7,8,10,11 subcarrier of the 2nd, 5 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 16
DMRS mapping schematic diagram when Figure 16 is 8 DMRS group of the embodiment of the invention, as shown in figure 16, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 7 RE positions that take are respectively (xn, yn) (n=0～7), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 7 mappings is respectively: { x0, y0}={ (0,1), (2,4) }, { x1, y1}={ (3,4), (2,4) }, and x2, y2}={ (7,8), (2,4) }, { x3, y3}={ (10,11), (2,4) }, { x4, y4}={ (0,1), (5,8) }, { x5, y5}={ (3,4), (5,8) }, and x6, y6}={ (7,8), (5,8) }, { x7, y7}={ (10,11), (5,8) }.Open loop DMRS pilot tone during namely 8 DMRS organize can be mapped on the 0th, 1,3,4,7,8,10,11 subcarrier of the 2nd, 4,5,8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 17
DMRS mapping schematic diagram when Figure 17 is 2 DMRS group of the embodiment of the invention, as shown in figure 17, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 1 RE position that takies is respectively (xn, yn) (n=0～1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 1 mapping is respectively: { x0, y0}={{ (0,1,3,4), 2}, { (1,2,4,5), 5}}, { x1, y1}={{ (6,7,9,10), 2}, { (7,8,10,11), 5}}.Namely the open loop DMRS pilot tone in 8 DMRS group can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 18
DMRS mapping schematic diagram when Figure 18 is 4 DMRS group of the embodiment of the invention, as shown in figure 18, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={{ (0,1,3,4), 2}, { (1,2,4,5), 4}}, { x1, y1}={{ (6,7,9,10), 2}, { (7,8,10,11), 4}}, { x2, y2}={{ (0,1,3,4), 5}, { (1,2,4,5), 8}}, x1, y1}={{ (6,7,9,10), 5}, { (7,8,10,11), 8}}.Namely the open loop DMRS pilot tone in 4 DMRS group can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd, 5 OFDM symbol and the 4th, 8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 19
DMRS mapping schematic diagram when Figure 19 is 4 DMRS group of the embodiment of the invention, as shown in figure 19, in this example, open loop DMRS pilot tone can be mapped to { 2,5}OFDM symbol.If DMRS group 0～DMRS group 3 RE positions that take are respectively (xn, yn) (n=0～3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 3 mappings is respectively: { x0, y0}={{ (0,1), 2}, { (1,2), 5}}, { x1, y1}={{ (3,4), 2}, { (4,5), 5}, { x2, y2}={{ (6,7), 2}, { (7,8), 5}, { x3, y3}={{ (9,10), 2}, { (10,11), 5}.Namely the open loop DMRS pilot tone in 4 DMRS group can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Embodiment 20
DMRS mapping schematic diagram when Figure 20 is 8 DMRS group of the embodiment of the invention, as shown in figure 20, in this example, open loop DMRS pilot tone can be mapped to { 2,4,5,8}OFDM symbol.If DMRS group 0～DMRS group 7 RE positions that take are respectively (xn, yn) (n=0～7), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in the RB, and y represents the index of OFDM symbol.The Resource Unit of DMRS group 0～DMRS group 7 mappings is respectively: { x0, y0}={{ (0,1), 2}, { (1,2), 4}}, { x1, y1}={{ (3,4), 2}, { (4,5), 4}}, { x2, y2}={{ (6,7), 2}, { (7,8), 4}}, { x3, y3}={{ (9,10), 2}, and (10,11), 4}}, x4, y4}={{ (0,1), 5}, { (1,2), 8}}, { x5, y5}={{ (3,4), 5}, { (4,5), 8}}, { x6, y6}={{ (6,7), 5}, (7,8), 8}}, x7, y7}={{ (9,10), 5}, { (10,11), 8}}.Namely the open loop DMRS pilot tone in 8 DMRS group can be mapped on the 1st, 2,4,5,7,8,10,11 subcarrier of the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd, 5 OFDM symbol and the 4th, 8 OFDM symbol.
Alternatively, in each DMRS group, can adopt the mode of FDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.The different DMRS ports that adopt CDM to carry out resource in the multiplexing same DMRS group can adopt walsh code [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
Figure 21 is the composition structural representation that the frequency pilot sign of the embodiment of the invention is determined device, and as shown in figure 21, frequency pilot sign of the present invention is determined device, comprises allocation units 210, processing unit 211 and load bearing unit 212, wherein,
Allocation units 210 are used to the data resource of different grouping to distribute different DMRS;
Processing unit 211 is used for the data resource to different DMRS groups, uses different precoding weights or beam forming weight to carry out precoding or beam forming processing;
Load bearing unit 212 is used for different DMRS groups are carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe one or more.
The above-mentioned processing unit 211 of stating to data resource in the DMRS group, uses identical precoding or beam forming weight to carry out precoding or beam forming processing.
Above-mentioned load bearing unit 212 is further used for, and described DMRS is carried on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
The modes of the concrete carrying of load bearing unit 212 DMRS can be determined the relevant bearer mode in the method and understand referring to aforementioned frequency pilot sign.
Those skilled in the art are to be understood that, frequency pilot sign shown in Figure 21 determines that device determines method design for realizing aforesaid frequency pilot sign, frequency pilot sign shown in Figure 21 determines that the function of each processing unit in the device can be with reference to the description of preceding method and understand, the function of each processing unit can realize by the program that runs on the processor, also can realize by concrete logical circuit.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (36)
1. a frequency pilot sign is determined method, it is characterized in that, described method comprises:
The different demodulated reference signal DMRS of data resource distribution for different grouping, the data resource of different DMRS groups uses different precoding weights or beam forming weight to carry out precoding or beam forming is processed, and different DMRS organize one or more on the 2nd, 4,5,8 the OFDM symbol that is carried on the extended cyclic prefix subframe.
2. method according to claim 1 is characterized in that, described method also comprises:
Described DMRS is carried on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol of extended cyclic prefix subframe.
3. method according to claim 2 is characterized in that, when described DMRS group was 12, the DMRS of described 12 DMRS group was carried on respectively on the 0th～11 subcarrier.
4. method according to claim 2 is characterized in that, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 4 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 1st, 5 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 6th, 10 subcarrier;
The DMRS of the 4th DMRS group is carried on the 7th, 11 subcarrier.
5. method according to claim 2 is characterized in that, described DMRS is carried on the 1st, 5,7,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 1st, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 11 subcarrier.
6. method according to claim 2 is characterized in that, described DMRS is carried on the 0th, 5,6,11 subcarrier on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol;
When described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 11 subcarrier.
7. method according to claim 1 is characterized in that, described method also comprises:
Described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe.
8. method according to claim 7 is characterized in that, described DMRS organizes on the 1st, 2,4,5,7,8,10,11 subcarrier that is carried on the 2nd, 5 the OFDM symbol.
9. method according to claim 8 is characterized in that, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier.
10. method according to claim 8 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier.
11. method according to claim 7 is characterized in that, described DMRS organizes on the 0th, 1,3,4,7,8,10,11 subcarrier that is carried on the 2nd, 5 the OFDM symbol.
12. method according to claim 11 is characterized in that, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,3,4 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier.
13. method according to claim 12 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 3rd, 4 subcarrier;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier.
14. method according to claim 7 is characterized in that, described DMRS is carried on the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd OFDM symbol and on the 1st, 2,4,5,7,8,10,11 subcarrier of the 5th OFDM symbol.
15. method according to claim 14 is characterized in that, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,2,3,4,5 subcarrier; The DMRS of the 2nd DMRS group is carried on the 6th, 7,8,9,10,11 subcarrier.
16. method according to claim 14 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on 1,2 subcarrier of the 0th, 1 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on 4,5 subcarriers of the 3rd, 4 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on 7,8 subcarriers of the 6th, 7 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol;
The DMRS of the 4th DMRS group is carried on 10,11 subcarriers of the 9th, 10 subcarrier of the 2nd OFDM symbol and the 5th OFDM symbol.
17. method according to claim 7 is characterized in that, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe.
18. method according to claim 17 is characterized in that, when described DMRS group is 2,
The DMRS of the one DMRS group is carried on the 0th, 1,4,5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 7,10,11 subcarrier.
19. method according to claim 17 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier;
The DMRS of the one DMRS group is carried on the 4th, 5 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 6th, 7 subcarrier;
The DMRS of the 2nd DMRS group is carried on the 10th, 11 subcarrier.
20. method according to claim 1 is characterized in that, described DMRS is carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
21. method according to claim 20 is characterized in that, described DMRS is carried on the 0th, 1,4,5,6,7,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
22. method according to claim 21 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1,4,5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 6th, 7,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 0th, 1,4,5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 6th, 7,10,11 subcarrier of the 5th, 8 OFDM symbol.
23. method according to claim 21 is characterized in that, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 6th, 7 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 0th, 1 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 6th, 7 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
24. method according to claim 20 is characterized in that, described DMRS is carried on the 1st, 2,4,5,7,8,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
25. method according to claim 24 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 1st, 2,4,5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 5th, 8 OFDM symbol.
26. method according to claim 24 is characterized in that, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 1st, 2 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
27. method according to claim 20 is characterized in that, described DMRS is carried on the 0th, 1,3,4,7,8,10,11 subcarrier on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
28. method according to claim 27 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 0th, 1,3,4 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 0th, 1,3,4 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 5th, 8 OFDM symbol.
29. method according to claim 27 is characterized in that, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 0th, 1 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 3rd, 4 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 2nd, 4 OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 0th, 1 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 3rd, 4 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 5th, 8 OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 5th, 8 OFDM symbol.
30. method according to claim 1, it is characterized in that described DMRS is carried on the 0th, 1,3,4,6,7,9,10 subcarrier of the 2nd, 5 OFDM symbol of extended cyclic prefix subframe and the 1st, 2,4,5,7,8,10,11 subcarrier of the 4th, 8 OFDM symbol.
31. method according to claim 30 is characterized in that, when described DMRS group is 4,
The DMRS of the one DMRS group is carried on the 1st, 2,4,5 subcarrier of the 0th, 1,3,4 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 7th, 8,10,11 subcarrier of the 6th, 7,9,10 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 1st, 2,4,5 subcarrier of the 0th, 1,3,4 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 7th, 8,10,11 subcarrier of the 6th, 7,9,10 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol.
32. method according to claim 30 is characterized in that, when described DMRS group is 8,
The DMRS of the one DMRS group is carried on the 1st, 2 subcarrier of the 0th, 1 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 2nd DMRS group is carried on the 4th, 5 subcarrier of the 3rd, 4 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 3rd DMRS group is carried on the 7th, 8 subcarrier of the 6th, 7 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 4th DMRS group is carried on the 10th, 11 subcarrier of the 9th, 10 subcarrier of the 2nd OFDM symbol and the 4th OFDM symbol;
The DMRS of the 5th DMRS group is carried on the 1st, 2 subcarrier of the 0th, 1 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 6th DMRS group is carried on the 4th, 5 subcarrier of the 3rd, 4 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 7th DMRS group is carried on the 7th, 8 subcarrier of the 6th, 7 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol;
The DMRS of the 8th DMRS group is carried on the 10th, 11 subcarrier of the 9th, 10 subcarrier of the 5th OFDM symbol and the 8th OFDM symbol.
33. to 32 each described methods, it is characterized in that described method also comprises according to claim 1:
Use the multiplexing DMRS of mode that adopts time division multiplexing tdm and/or frequency division multiplexing FDM and/or code division multiplexing CDM; Different DMRS groups are used the weights of identical or different precodings, or use the weights of the different layers of identical precoding weights; Identical DMRS group is used the weights of the identical layer of identical precoding weights or identical precoding weights.
34. method according to claim 33 is characterized in that, when using the different DMRS of resource in the multiplexing same DMRS group of CDM, employed walsh code is [1,1], [1 ,-1] or [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].
35. a frequency pilot sign is determined device, it is characterized in that, described device comprises allocation units, processing unit and load bearing unit, wherein,
Allocation units are used to the data resource of different grouping to distribute different DMRS;
Processing unit is used for the data resource to different DMRS groups, uses different precoding weights or beam forming weight to carry out precoding or beam forming processing;
Load bearing unit is used for different DMRS groups are carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe one or more.
36. device according to claim 35 is characterized in that, described load bearing unit is further used for,
Described DMRS is carried on the 4th, 5 the orthogonal frequency division multiplex OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 5 the OFDM symbol of extended cyclic prefix subframe;
Perhaps, described DMRS is carried on the 2nd, 4,5,8 the OFDM symbol of extended cyclic prefix subframe.
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