CN102904839A - Channel estimating method, and data transmission method and equipment - Google Patents
Channel estimating method, and data transmission method and equipment Download PDFInfo
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Abstract
The embedment of the invention provides a channel estimating method, a data transmission method and data transmission equipment. The channel estimating method comprises the steps of: receiving the data sent by equipment at a transmission side through a resource block pair, wherein the resource block pair is shared by a control channel and a data channel; if the value of a codebook subset limiting signaling is more than 4, estimating the control channel through a way that pilot frequency symbols more than two layers are provided on the same pilot frequency and time frequency resources in the resource block pair; and if the value of the codebook subset limiting signaling is not more than 4, estimating the control channel through a way that pilot frequency symbols not more than two layers are provided on the same pilot frequency and time frequency resources in the resource block pair. By adopting the channel estimating method provided by the embodiment of the invention, the actual channel can be accurately estimated through the equipment at the receiving side under the condition that the control channel and the data channel share the same source block pair, so that the control channel can be accurately demodulated.
Description
Technical field
The embodiment of the invention relates to the communication technology, relates in particular to a kind of channel estimation methods, data transmission method for uplink and equipment.
Background technology
Long Term Evolution (Long Term Evolution, hereinafter to be referred as: LTE) or senior Long Term Evolution (Long Term Evolution Advanced, hereinafter to be referred as: LTE-A) technology adopts frequency pilot sign to obtain channel estimation value, and use this channel estimation value, data are carried out demodulation.
In the prior art, the running time-frequency resource unit that is used for transfer of data is Resource Block (Resource Block, hereinafter to be referred as: RB), Whole frequency band can be divided into a plurality of RB to (hereinafter to be referred as: RB pair), each RB pair on time domain corresponding two time slots (hereinafter to be referred as: slot), many group frequency pilot signs and multi-layer data symbol transmit at same RB pair, divide with code between many group frequency pilot signs or the time frequency division multiplex mode transmission, wherein, corresponding one group of frequency pilot sign of every layer data symbol.In LTE or LTE-A, sending ending equipment can be at a certain Physical Downlink Control Channel of slot transmission (the X-Physical Downlink Control Channel of a RB pair, hereinafter to be referred as: X-PDCCH), another slot transmit Physical Downlink Shared Channel (Physical Downlink Shared Channel, hereinafter to be referred as: PDSCH).X-PDCCH is used for transmitting the control information of DSCH Downlink Shared Channel, and receiving device at first receives X-PDCCH, solves to receive the needed control information of PDSCH, and then separates PDSCH.The X-PDCCH that transmits in same RB pair adopts identical pilot tone to carry out channel estimating with PDSCH, namely adopts the long pilot tone of same orthogonal code to carry out channel estimating.
But the inventor finds that prior art the problem of actual channel occurs being unable to estimate out often when carrying out the channel estimating of above-mentioned X-PDCCH in realizing process of the present invention, thereby causes X-PDCCH demodulation mistake.
Summary of the invention
The embodiment of the invention provides a kind of channel estimation methods, data transmission method for uplink and equipment.
The embodiment of the invention provides a kind of channel estimation methods, comprising:
A Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
If the value of codebook subset limitation signaling greater than 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged;
If the value of codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
Correspondingly, the embodiment of the invention provides a kind of receiving device, comprising:
Data reception module, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Processing module, if the value that is used for the codebook subset limitation signaling greater than 4, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign; If the value of codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
In the above embodiment of the present invention, after receiving device receives the data of sending ending equipment transmission at RB pair, can know the transfer of data number of plies on the data channel on this RB pair by the codebook subset limitation signaling, thereby be informed in the number of plies of the frequency pilot sign that superposes on the pilot tone running time-frequency resource identical among this RB pair according to this transfer of data number of plies, thereby the number of plies that can adopt frequency pilot sign is greater than the mode of 2 layers of correspondence or adopt the number of plies of frequency pilot sign to carry out the channel estimating of control channel greater than the mode of 4 layers of correspondence, thereby can correctly estimate actual channel, and then guarantee the correct demodulation of control channel.
The embodiment of the invention provides another kind of channel estimation methods, comprising:
Whether the signaling that receiving end/sending end equipment sends, the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair;
If the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is greater than 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign;
If the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
Correspondingly, the embodiment of the invention provides another kind of receiving device, comprising:
The signaling receiver module, be used for the signaling that receiving end/sending end equipment sends, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair;
Channel estimation module, if be used for the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together greater than 2, then adopt at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged, if the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
The embodiment of the invention provides a kind of data transmission method for uplink, comprising:
Send signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
Correspondingly, the embodiment of the invention provides a kind of sending ending equipment, comprising:
Signaling sending module, be used for sending signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
The above embodiment of the present invention shares the situation of same RB pair for control channel and data channel, before the channel estimating of the control channel of receiving device in carrying out RB pair, the signaling that can receiving end/sending end equipment sends, whether the number of plies by the frequency pilot sign on the identical pilot tone running time-frequency resource of the resource block pair that comprises in this signaling is greater than 2 indication information, receiving device can adopt corresponding channel estimating mode to carry out the channel estimating of control channel, thereby can correctly estimate actual channel, and then guarantee the correct demodulation of control channel.
The embodiment of the invention provides a kind of channel estimation methods, comprising:
A Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair.
Correspondingly, the embodiment of the invention provides a kind of receiving device, comprising:
Receiver module, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Channel estimation module is used for adopting at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign being arranged.
In the above embodiment of the present invention, situation for control channel and the shared same RB pair of data channel, during the channel estimating of the control channel of receiving device in carrying out RB pair, adopt regularly pilot tone running time-frequency resource identical in RB pair that the channel estimating of carrying out control channel greater than the mode of 2 layers of frequency pilot sign is arranged, thereby can correctly estimate actual channel, and then the correct demodulation of assurance control channel, solution is simple and reliable, effectively reduces terminal complexity.
The embodiment of the invention provides a kind of data transmission method for uplink, comprising:
Determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8;
If, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
Accordingly, the embodiment of the invention provides a kind of sending ending equipment, comprising:
Determination module be used for to determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8;
Sending module, determine that the number of plies N of data of the required transmission of data channel to be sent is greater than 4 if be used for described determination module, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
In the above embodiment of the present invention, on the RB pair that control channel and data channel share, the maximum number of plies that sending ending equipment sends to the downlink data of receiving device is 4, namely has at most 2 layers of frequency pilot sign to share identical running time-frequency resource.Therefore, for receiving device, can give tacit consent to employing identical pilot tone running time-frequency resource in RB pair the channel estimating of carrying out control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged, specifically, the frequency pilot sign that receiving device can be united the Resource Block reception at control channel place among the RB pair carries out the channel estimating of control channel, thereby avoids occurring the situation that receiving device can't carry out to control channel correct demodulation.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of channel estimation methods embodiment one of the present invention;
Fig. 2 is the structural representation of RB pair among the channel estimation methods embodiment one shown in Figure 1;
Fig. 3 is the flow chart of channel estimation methods embodiment two of the present invention;
Fig. 4 is the flow chart of channel estimation methods embodiment three of the present invention;
Fig. 5 is the flow chart of data transmission method for uplink embodiment of the present invention;
Fig. 6 is the structural representation of receiving device embodiment one of the present invention;
Fig. 7 is the structural representation of receiving device embodiment two of the present invention;
Fig. 8 is the structural representation of receiving device embodiment three of the present invention;
Fig. 9 is the structural representation of sending ending equipment embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the flow chart of channel estimation methods embodiment one of the present invention, and as shown in Figure 1, the method for present embodiment can comprise:
Step 101, a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair.
If the value of step 102 codebook subset limitation signaling greater than 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged.
If the value of step 103 codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
Below in conjunction with Fig. 2 the technical scheme of channel estimation methods embodiment one of the present invention shown in Figure 1 is elaborated.
Fig. 2 is the structural representation of RB pair among the channel estimation methods embodiment one shown in Figure 1, as shown in Figure 2, this RB pair comprises slot1 and slot2, this RB pair time domain comprise 14 symbols (hereinafter to be referred as: symbol), frequency domain comprise 12 subcarriers (hereinafter to be referred as: subcarrier), demodulation pilot frequency (Demodulation Reference Signal, hereinafter to be referred as: frequency pilot sign DMRS) in slot1 takies RB pair the 5th, 6 symbol, the 12nd, 13 symbol in slot2 takies RB pair.Have a kind of RB pair, X-PDCCH transmits at slot1 in this kind RB pair, and PDSCH transmits at slot2.PDSCH uses identical frequency pilot sign to carry out channel estimating with X-PDCCH, namely uses the subset or the complete or collected works that take the 5th, 6,12,13 DMRS symbols on the symbol to carry out channel estimating.Wherein, the number of plies of DMRS symbol is identical with the number of data layers of the upper transmission of PDSCH, and every layer data is corresponding one group of frequency pilot sign all, in order to estimate the channel that this data Layer experiences.
If receiving device can be supported at most the transmission of 8 layer data, then sending ending equipment is maximum in a RB pair need to transmit 8 groups of frequency pilot signs, and these 8 groups of frequency pilot signs are to distinguish with different running time-frequency resources a bit, and some is that code divides.For example, when supporting the transmission of 8 layer data, the 1st, 2,5,7 groups of frequency pilot signs take identical DMRS running time-frequency resource, i.e. the DMRS resource part of the dark color among Fig. 2, then the 1st, 2,5,7 groups of frequency pilot signs need to divide at identical running time-frequency resource by code and transmit, also at this moment namely, identical pilot tone running time-frequency resource has 4 layers of (greater than 2 layers) frequency pilot sign in RB pair; The 3rd, 4,6,8 groups of frequency pilot signs take identical DMRS running time-frequency resource, and namely the DMRS resource part of the light color among Fig. 2 is this moment also, and identical pilot tone running time-frequency resource has 4 layers of (greater than 2 layers) frequency pilot sign in RB pair.Particularly, the orthogonal code example of these 8 groups of frequency pilot signs employings is as shown in table 1.
If a receiving device is supported at most the transmission of 4 layer data, then sending ending equipment needs at most 4 groups of frequency pilot signs of transmission in a RBpair.Wherein the 1st, 2 groups of frequency pilot signs can take identical DMRS running time-frequency resource, DMRS resource part such as the dark color among Fig. 2, therefore, the 1st, 2 groups of frequency pilot signs need to divide at identical running time-frequency resource by code and transmit, and also i.e. this moment, identical pilot tone running time-frequency resource has 2 layers of (less than or equal to 2 layers) frequency pilot sign in RB pair.The 3rd, 4 group of frequency pilot sign can take identical DMRS running time-frequency resource, and such as the DMRS resource part of the light color among Fig. 2, in like manner, at this moment, identical pilot tone running time-frequency resource has 2 layers of (less than or equal to 2 layers) frequency pilot sign in RB pair.
The pilot signal corresponding with the transmission of 4 layer data can adopt the orthogonal code sequence of sequence number 1～4 in the following table 1 to process.
Table 1
| Sequence number | Orthogonal code sequence |
| 1 | [+1+1+1+1] |
| 2 | [+1-1+1-1] |
| 3 | [+1+1+1+1] |
| 4 | [+1-1+1-1] |
| 5 | [+1+1-1-1] |
| 6 | [-1-1+1+1] |
| 7 | [+1-1-1+1] |
| 8 | [-1+1+1-1] |
Hence one can see that, when the transfer of data number of plies less than or equal to 4 the time, in RB pair, on the identical pilot tone running time-frequency resource 2 layers of frequency pilot sign are arranged at most, at this moment, the 5th, 2 groups of DMRS of 6 upper stacks of symbol are mutually orthogonal, 2 groups of DMRS symbols of the 12nd, 13 the upper stack of symbol are mutually orthogonal, therefore, receiving device can be united the channel estimating that the DMRS symbol that receives on the 5th, 6 symbol carries out control channel.When the transfer of data number of plies greater than 4 the time, the minimum frequency pilot sign that haves three layers on the identical pilot tone running time-frequency resource in RB pair, at this moment, receiving device need to unite the 5th, 6,12,13 symbol could obtain 4 groups of orthogonalities between the DMRS symbol, therefore, receiving device need to unite the 5th, the DMRS symbol that receives on 6,12,13 symbols carries out the channel estimating of control channel.
Therefore, receiving device wants control channel is carried out correct channel estimating, and which floor frequency pilot sign at first will obtain pilot tone running time-frequency resource identical in RB pair has, thereby could adopt corresponding channel estimating mode to carry out the channel estimating of control channel.And the number of plies of the frequency pilot sign that identical pilot tone running time-frequency resource exists in RB pair depends on the number of plies of the data that PDSCH transmits.But, behind the RB pair that receives at receiving device as shown in Figure 2, at first need X-PDCCH is carried out channel estimating, this moment the PDSCH that receiving device and not knowing transmits among the slot2 number of data layers, therefore, receiving device can't be informed in which floor DMRS symbol that superposeed altogether on the identical running time-frequency resource, thereby also can't know the channel estimating mode of the control channel of required employing.If receiving device thinks that maximum 2 layers of DMRS are superimposed upon on the identical running time-frequency resource, and in fact the transmission number of plies of PDSCH is greater than 4, then receiving device is unable to estimate out actual channel, thereby can't carry out the demodulation of X-PDCCH.
Present embodiment can't learn that for receiving device in the above-mentioned prior art end adopts the mode of which kind of channel estimating RB pair shown in Figure 2 to be carried out the channel estimating of X-PDCCH and the problem that occurs, the solution of proposition just.
In the present embodiment, receiving device can be used codebook subset limitation signaling CodebookSubsetRestriction and knows the transfer of data number of plies on the PDSCH.This CodebookSubsetRestriction signaling is the semi-static signaling of a kind of high level, and sending ending equipment sent to the largest data transfer number of plies on the PDSCH of receiving device before the value of this signaling namely was illustrated in next time this signaling and arrives.Receiving device can determine on the pilot tone running time-frequency resource identical in this RB pair which floor frequency pilot sign is arranged at most by the CodebookSubsetRestriction signaling after receiving the data of sending ending equipment transmission at a RB pair.
Specifically, if the value of CodebookSubsetRestriction is greater than 4, then be illustrated in the transfer of data number of plies on the PDSCH of RB pair greater than 4, also namely representing has on the pilot tone running time-frequency resource identical among this RB pair greater than 2 layers of frequency pilot sign, at this moment, receiving device can adopt at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign.In the present embodiment, the frequency pilot sign that receives on the frequency pilot sign that this channel estimating mode can receive for the Resource Block that jointly controls the channel place and the Resource Block at data channel place carries out the channel estimating of control channel, for instance, if the transformat of this RB pair as shown in Figure 2, then receiving device can unite the 5th, the DMRS symbol that receives on 6,12,13 symbols carries out the channel estimating of control channel.
If the value of CodebookSubsetRestriction is less than or equal to 4, then be illustrated in the transfer of data number of plies on the PDSCH of this RB pair less than or equal to 4, also namely representing has on the pilot tone running time-frequency resource identical among this RB pair less than or equal to 2 layers of frequency pilot sign, at this moment, receiving device can adopt at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign, the frequency pilot sign that this channel estimating mode can receive for the Resource Block at control channel place among the associating RB pair carries out the channel estimating of control channel, still with Fig. 2 for instance, then receiving device can be united the 5th, the DMRS symbol that receives on the 6th symbol carries out the channel estimating of control channel.
Need to prove, present embodiment is to suppose that receiving device can support that at most 8 layer data are transmitted as the embodiment of prerequisite, those skilled in the art are understandable that equally, if receiving device can be supported more multi-layered transfer of data, then can take above-described embodiment as reference, analogize similar technical scheme, and, for the transmission of 8 layer data, orthogonal code also can adopt other code word outside the table 1, as long as can guarantee the orthogonality of DMRS.
In addition, the receiving device in the present embodiment can be the terminal equipments such as mobile phone, and sending ending equipment can be the network equipments such as base station.
In the present embodiment, after receiving device receives the data of sending ending equipment transmission at RB pair, can know the transfer of data number of plies on the data channel on this RB pair by the codebook subset limitation signaling, thereby be informed in the number of plies of the frequency pilot sign that superposes on the pilot tone running time-frequency resource identical among this RB pair according to this transfer of data number of plies, thereby the number of plies that can adopt frequency pilot sign is greater than the mode of 2 layers of correspondence or adopt the number of plies of frequency pilot sign to carry out the channel estimating of control channel greater than the mode of 4 layers of correspondence, thereby can correctly estimate actual channel, and then guarantee the correct demodulation of control channel.
Can't correctly estimate actual channel in order to solve above-mentioned receiving device, thereby can't carry out the problem of the demodulation of X-PDCCH, the embodiment of the invention also provides following solution.
Fig. 3 is the flow chart of channel estimation methods embodiment two of the present invention, and as shown in Figure 3, the method for present embodiment can comprise:
Whether the signaling that step 301, receiving end/sending end equipment send, the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair;
Wherein, step 302 can be specially: if described indication information indexed resource piece Middle Phase with the pilot tone running time-frequency resource on the number of plies of frequency pilot sign greater than 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign; If the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
Specifically, in the present embodiment, sending ending equipment can send signaling to receiving device, and whether this signaling can be specifically designed to the number of plies of the frequency pilot sign on the pilot tone running time-frequency resource identical among this RB pair of indication receiving device greater than 2.Receiving device is after receiving this signaling, can determine that whether the number of plies of the frequency pilot sign on the pilot tone running time-frequency resource identical among the RB pair is greater than 2 according to the indication information that comprises in this signaling, thereby can according to this indication information, adopt corresponding channel estimating mode to carry out the channel estimating of control channel.
Need to prove that present embodiment does not limit the concrete form of this signaling, also do not limit the concrete form of the indication information that comprises in this signaling, those skilled in the art are designed, designed as required.Preferably, the signaling in above-described embodiment can be the semi-static signaling of high level or physical layer dynamic signaling.
Adopt the situation of physical layer dynamic signaling for this signaling, because the physical layer dynamic signaling can transmit in each frame, therefore, in this physical layer dynamic signaling, can indicate comparatively timely and accurately the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource whether greater than 2.If the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource among this RBpair of indication receiving terminal is greater than 2, then receiving device can jointly control the channel estimating that the frequency pilot sign that receives on the RB pair at channel and data channel place carries out control channel, for example adopts above-mentioned the 5th, 6,12 and 13 symbol shown in Figure 2 to carry out the channel estimating of control channel; If the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource among this RB pair of physical layer dynamic signaling indicating receiving terminal is less than or equal to 2, therefore, receiving device can be united the channel estimating that frequency pilot sign that the Resource Block at control channel place among the RB pair receives carries out control channel, for example adopts above-mentioned shown in Figure 2 the 5th and the 6th symbol to carry out the channel estimating of control channel.
Adopt the situation of high-rise semi-static signaling for this signaling, because the transmission cycle of high-rise semi-static signaling is longer, therefore the number of plies that should the semi-static signaling of high level not necessarily can indicate exactly the frequency pilot sign on the pilot tone running time-frequency resource identical in each frame, therefore, the semi-static signaling indicating of this high level be the scope of the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource, the maximum number of plies for example, receiving device can be determined after receiving so high-rise semi-static signaling, between the time of advent to the time of advent of next high-rise semi-static signaling of the semi-static signaling of this high level, the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource can not surpass the indicated maximum number of plies in the semi-static signaling of this high level.For example, the value of high-rise semi-static signaling is 0 or 1.When its value is 0, represent that the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource is less than or equal to 2; When its value is 1, represent the number of plies maximum of the frequency pilot sign on the identical pilot tone running time-frequency resource greater than 2, namely the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource may be greater than 2, also may be less than or equal to 2, vice versa.If the frequency pilot sign that the number of plies of the frequency pilot sign on the identical pilot tone running time-frequency resource of high-rise semi-static signaling indication less than or equal to 2, then can jointly control on the Resource Block at channel place carries out channel estimating; In LTE, the frequency pilot sign that can jointly control on the 5th, 6 symbol on the RB pair at channel and data channel place carries out channel estimating.If the frequency pilot sign that the number of plies maximum of the frequency pilot sign on the identical pilot tone running time-frequency resource of high-rise semi-static signaling indication greater than 2, then can jointly control on the Resource Block at frequency pilot sign on the Resource Block at channel place and data channel place carries out channel estimating; In LTE, the frequency pilot sign that can jointly control on the 5th, 6,12,13 symbols on the RB pair at channel and data channel place carries out channel estimating.
About the semi-static signaling of above-mentioned high level and physical layer dynamic signaling, those skilled in the art can adopt the semi-static signaling of existing high level and physical layer dynamic signaling to realize, repeat no more herein.
The above embodiment of the present invention shares the situation of same RB pair for control channel and data channel, before the channel estimating of the control channel of receiving device in carrying out RB pair, the signaling that can receiving end/sending end equipment sends, whether the number of plies by the frequency pilot sign on the identical pilot tone running time-frequency resource of the resource block pair that comprises in this signaling is greater than 2 indication information, receiving device can adopt corresponding channel estimating mode to carry out the channel estimating of control channel, thereby can correctly estimate actual channel, and then guarantee the correct demodulation of control channel.
Can't correctly estimate actual channel in order to solve above-mentioned receiving device, thereby can't carry out the problem of the demodulation of control channel, the embodiment of the invention also provides following solution.
Fig. 4 is the flow chart of channel estimation methods embodiment three of the present invention, and as shown in Figure 4, the method for present embodiment can comprise:
The method of present embodiment equally can be for the structure of RB pair shown in Figure 2, and wherein X-PDCCH and PDSCH share transmission on the RB pair.The method of present embodiment realizes more simple with respect to the scheme of channel estimation methods embodiment one shown in Figure 1 and embodiment two.In the method for present embodiment, no matter superposeed altogether which floor DMRS among the RB pair on the identical running time-frequency resource, receiving device all adopts pilot tone running time-frequency resource identical in RB pair that the channel estimating of carrying out control channel greater than the mode of 2 layers of frequency pilot sign is arranged regularly, specifically, in the present embodiment, receiving terminal can jointly control the frequency pilot sign that receives on the RB pair at channel and data channel place and carry out the channel estimating of control channel, thereby the situation of actual channel can not occur being unable to estimate out.
Share the situation of same RB pair in the present embodiment for control channel and data channel, during the channel estimating of the control channel of receiving device in carrying out RB pair, adopt regularly pilot tone running time-frequency resource identical in RB pair that the channel estimating of carrying out control channel greater than the mode of 2 layers of frequency pilot sign is arranged, thereby can correctly estimate actual channel, and then the correct demodulation of assurance control channel, solution is simple and reliable, effectively reduces terminal complexity.
Be unable to estimate out actual channel in order to solve above-mentioned receiving device, thereby can't carry out the problem of the demodulation of control channel, the embodiment of the invention also provides following solution.
In a data sending method embodiment, sending ending equipment can send signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
Specifically, sending ending equipment can send high-rise semi-static signaling or the physical layer dynamic signaling that comprises described indication information to receiving device in the present embodiment.The data transmission method for uplink of present embodiment is the sending ending equipment performed method corresponding with channel estimation methods shown in Figure 3, and it realizes that principle is similar, repeats no more herein.
Fig. 5 is the flow chart of data transmission method for uplink embodiment of the present invention, and as shown in Figure 5, the method for present embodiment can comprise:
Step 501, determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8;
If step 502, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
Specifically, present embodiment can be optimized for the method that sending ending equipment sends data, and the RB pair that adopts in the present embodiment still can be with reference to structure shown in Figure 2.Sending ending equipment is before sending downlink data, can determine that whether the transmission number of plies N of PDSCH to be sent is greater than 4, if N is greater than 4, then explanation, the DMRS number of plies that superposes at identical running time-frequency resource is greater than 2 layers, then receiving device need to jointly control the channel estimating that the frequency pilot sign that receives on the RB pair at channel and data channel place carries out control channel, if and N is less than or equal to 4, then explanation, the DMRS number of plies that superposes at identical running time-frequency resource is less than or equal to 2 layers, and then the receiving device frequency pilot sign that only needs the Resource Block at control channel place among the associating RB pair to receive carries out the channel estimating of control channel.
In order to reduce the complexity of receiving device, and avoid occurring the fuzzy problem of channel estimating mode that receiving device adopts pilot tone, sending ending equipment can be at N greater than 4 o'clock, on the RB-pair that control channel and data channel share, data on the data channel to be sent are split, only send the M layer, namely only send M layer data and the M layer frequency pilot sign corresponding with this M layer data.
Above-mentioned M layer data can corresponding first code word, also can corresponding second code word.In the present embodiment, sending ending equipment can send at a RB pair data and the corresponding M layer DMRS of M data Layer of first code word when sending data.Owing to when transmitting downlink data, can adopt a plurality of RB pair, and wherein only have one or several RB pair on may exist control channel and data channel to share situation, therefore, present embodiment can be only exists the RB pair of the situation that control channel and data channel share to process for this, and for other RB pair, it still can normally send the N layer data.
Need to prove, if step 501 determines that the number of plies N of data of the required transmission of data channel to be sent is less than or equal to 4, then receiving device both can adopt the frequency pilot sign of the Resource Block reception at control channel place among the associating RB pair to carry out the mode of the channel estimating of control channel, also can adopt to unite to jointly control the channel estimating that the frequency pilot sign that receives on channel and the data channel place RB pair carries out described control channel.
Need to prove in addition, said method embodiment all only is transmitted as example with control channel and data channel at same RB pair and describes, but, present embodiment does not limit to this a kind of resource form with RB pair, control channel it will be appreciated by persons skilled in the art that so long as can adopt the technical scheme of said method embodiment to realize with the resource that data channel need to adopt identical pilot signal to carry out channel estimating.
In the present embodiment, on the RB pair that control channel and data channel share, the maximum number of plies that sending ending equipment sends to the downlink data of receiving device is 4, namely has at most 2 layers of frequency pilot sign to share identical running time-frequency resource.Therefore, for receiving device, can give tacit consent to employing identical pilot tone running time-frequency resource in RB pair the channel estimating of carrying out control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged, specifically, the frequency pilot sign that receiving device can be united the Resource Block reception at control channel place among the RB pair carries out the channel estimating of control channel, thereby avoids occurring the situation that receiving device can't carry out to control channel correct demodulation.
Fig. 6 is the structural representation of receiving device embodiment one of the present invention, as shown in Figure 6, the receiving device of present embodiment can comprise: data reception module 11, processing module 12, wherein, data reception module 11, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair; Processing module 12, if the value that is used for the codebook subset limitation signaling greater than 4, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign; If the value of codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
Specifically, processing module 12 is concrete to be used for when the identical pilot tone running time-frequency resource of described resource block pair has greater than 2 layers of frequency pilot sign, unites the channel estimating that the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place carries out described control channel; Perhaps; Be used for when the identical pilot tone running time-frequency resource of described resource block pair has less than or equal to 2 layers of frequency pilot sign, the frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
The receiving device of the above embodiment of the present invention can be used for carrying out the method for embodiment of the method shown in Figure 1, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 7 is the structural representation of receiving device embodiment two of the present invention, as shown in Figure 7, the receiving device of present embodiment can comprise: signaling receiver module 21 and channel estimation module 22, wherein, signaling receiver module 21 is used for the signaling that receiving end/sending end equipment sends, and whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair; Channel estimation module 22, if be used for the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together greater than 2, then adopt at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged, if the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
Specifically, this signaling is high-rise semi-static signaling or physical layer dynamic signaling, correspondingly, channel estimation module 22 is concrete to be used for when the identical pilot tone running time-frequency resource of described resource block pair has greater than 2 layers of frequency pilot sign, unites the channel estimating that the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place carries out described control channel; Perhaps; Be used for when the identical pilot tone running time-frequency resource of described resource block pair has less than or equal to 2 layers of frequency pilot sign, the frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
With above-mentioned receiving device shown in Figure 7 accordingly, the embodiment of the invention also provides a kind of sending ending equipment, comprise signaling sending module, be used for sending signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
The receiving device of the above embodiment of the present invention and sending ending equipment can be used for carrying out the method for embodiment of the method shown in Figure 3, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 8 is the structural representation of receiving device embodiment three of the present invention, as shown in Figure 8, the receiving device of present embodiment can comprise: receiver module 31 and channel estimation module 32, wherein, receiver module 31, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair; Channel estimation module 32 is used for adopting at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign being arranged.Particularly, channel estimation module 32 concrete Resource Block for uniting described control channel and data channel place carry out the channel estimating of described control channel to the frequency pilot sign of upper reception.
The receiving device of present embodiment can be used for carrying out the method for embodiment of the method shown in Figure 4, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 9 is the structural representation of sending ending equipment embodiment of the present invention, as shown in Figure 9, the sending ending equipment of present embodiment can comprise: determination module 41 and sending module 42, wherein, determination module 41, be used for to determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8; Sending module 42, determine that the number of plies N of data of the required transmission of data channel to be sent is greater than 4 if be used for described determination module, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
The sending ending equipment of present embodiment can be used for carrying out the method for embodiment of the method shown in Figure 5, and its realization principle and technique effect are similar, repeat no more herein.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (23)
1. a channel estimation methods is characterized in that, comprising:
A Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
If the value of codebook subset limitation signaling greater than 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged;
If the value of codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
2. method according to claim 1 is characterized in that, described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place and carry out the channel estimating of described control channel;
Described employing has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
The frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
3. method according to claim 1 is characterized in that, described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite described Resource Block and the 5th symbol of upper reception, the 6th symbol, the 12nd symbol and the 13rd symbol are carried out the channel estimating of described control channel;
Described employing has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite the channel estimating of the 5th symbol receiving and the 6th symbol being carried out described control channel at described Resource Block.
4. a channel estimation methods is characterized in that, comprising:
Whether the signaling that receiving end/sending end equipment sends, the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair;
If the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is greater than 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign;
If the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
5. method according to claim 4 is characterized in that, the signaling that described receiving end/sending end equipment sends comprises:
Receive high-rise semi-static signaling or physical layer dynamic signaling that described sending ending equipment sends.
6. according to claim 4 or 5 described methods, it is characterized in that described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place and carry out the channel estimating of described control channel;
Described employing has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
The frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
7. according to claim 4 or 5 described methods, it is characterized in that described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite described Resource Block and the 5th symbol of upper reception, the 6th symbol, the 12nd symbol and the 13rd symbol are carried out the channel estimating of described control channel;
Described employing has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite the channel estimating of the 5th symbol receiving and the 6th symbol being carried out described control channel at described Resource Block.
8. a data transmission method for uplink is characterized in that, comprising:
Send signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
9. method according to claim 8 is characterized in that, sends signaling to receiving device, comprising:
Send high-rise semi-static signaling or the physical layer dynamic signaling that comprises described indication information to receiving device.
10. a channel estimation methods is characterized in that, comprising:
A Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair.
11. method according to claim 10 is characterized in that, described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
The Resource Block of uniting described control channel and data channel place carries out the channel estimating of described control channel to the frequency pilot sign of upper reception.
12. method according to claim 10 is characterized in that, described employing has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign at the identical pilot tone running time-frequency resource of described resource block pair, comprising:
Unite described Resource Block and the 5th symbol of upper reception, the 6th symbol, the 12nd symbol and the 13rd symbol are carried out the channel estimating of described control channel.
13. a data transmission method for uplink is characterized in that, comprising:
Determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8;
If, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
14. method according to claim 13 is characterized in that, is used for the frequency pilot sign of control channel estimation at the Resource Block at described control channel place in the described M group frequency pilot sign.
15. method according to claim 13 is characterized in that, is used for the frequency pilot sign of control channel estimation at the 5th symbol and the 6th symbol of described Resource Block in the described M group frequency pilot sign.
16. a receiving device is characterized in that, comprising:
Data reception module, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Processing module, if the value that is used for the codebook subset limitation signaling greater than 4, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign; If the value of codebook subset limitation signaling less than or equal to 4, then adopts at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign is arranged.
17. receiving device according to claim 16, it is characterized in that, described processing module, concrete being used for when the identical pilot tone running time-frequency resource of described resource block pair has greater than 2 layers of frequency pilot sign, unite the channel estimating that the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place carries out described control channel; Perhaps; Be used for when the identical pilot tone running time-frequency resource of described resource block pair has less than or equal to 2 layers of frequency pilot sign, the frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
18. a receiving device is characterized in that, comprising:
The signaling receiver module, be used for the signaling that receiving end/sending end equipment sends, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling greater than 2 indication information, and wherein, control channel and data channel share described Resource Block pair;
Channel estimation module, if be used for the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together greater than 2, then adopt at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign is arranged, if the number of plies of the frequency pilot sign on the described indication information indexed resource piece Middle Phase pilot tone running time-frequency resource together is less than or equal to 2, then adopting at the identical pilot tone running time-frequency resource of described resource block pair has the channel estimating of carrying out described control channel less than or equal to the mode of 2 layers of frequency pilot sign.
19. equipment according to claim 18, it is characterized in that, described channel estimation module specifically is used for when the identical pilot tone running time-frequency resource of described resource block pair has greater than 2 layers of frequency pilot sign, unites the channel estimating that the frequency pilot sign that receives on the Resource Block at frequency pilot sign that the Resource Block at described control channel place receives and data channel place carries out described control channel; Perhaps; Be used for when the identical pilot tone running time-frequency resource of described resource block pair has less than or equal to 2 layers of frequency pilot sign, the frequency pilot sign of uniting the Resource Block reception at the described control channel of described resource block pair place carries out the channel estimating of described control channel.
20. a sending ending equipment is characterized in that, comprising:
Signaling sending module, be used for sending signaling to receiving device, whether the number of plies that comprises the frequency pilot sign on the identical pilot tone running time-frequency resource of resource block pair in the described signaling is greater than 2 indication information, wherein, control channel and data channel share described Resource Block pair, so that described receiving device according to described indication information, carries out the channel estimating of described control channel.
21. a receiving device is characterized in that, comprising:
Receiver module, be used for a Resource Block on the data that send of receiving end/sending end equipment, wherein, control channel and data channel share described Resource Block pair;
Channel estimation module is used for adopting at the identical pilot tone running time-frequency resource of described resource block pair the channel estimating of carrying out described control channel greater than the mode of 2 layers of frequency pilot sign being arranged.
22. equipment according to claim 21 is characterized in that, described channel estimation module specifically carries out the channel estimating of described control channel to the frequency pilot sign of upper reception for the Resource Block of uniting described control channel and data channel place.
23. a sending ending equipment is characterized in that, comprising:
Determination module be used for to determine that whether the number of plies N of data of the required transmission of data channel to be sent is greater than 4,1≤N≤8;
Sending module, determine that the number of plies N of data of the required transmission of data channel to be sent is greater than 4 if be used for described determination module, then at a Resource Block M that sends M layer data and correspondence is organized frequency pilot sign, wherein, 1≤M≤4, described M layer data refers to the data of M data Layer of corresponding same code word in the described N layer data, the number of plies of described M group frequency pilot sign on identical pilot tone running time-frequency resource be less than or equal to 2 layers, and described Resource Block is to the Resource Block that refers to described data channel and described control channel and share pair.
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