CN101447815A - Shaped-beam transmission method and shaped-beam transmission device - Google Patents
Shaped-beam transmission method and shaped-beam transmission device Download PDFInfo
- Publication number
- CN101447815A CN101447815A CNA2007101781662A CN200710178166A CN101447815A CN 101447815 A CN101447815 A CN 101447815A CN A2007101781662 A CNA2007101781662 A CN A2007101781662A CN 200710178166 A CN200710178166 A CN 200710178166A CN 101447815 A CN101447815 A CN 101447815A
- Authority
- CN
- China
- Prior art keywords
- reference signal
- ofdm symbol
- mapping
- frequency domain
- wave beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000013507 mapping Methods 0.000 claims abstract description 106
- 230000011664 signaling Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a shaped-beam transmission method which comprises the following steps: a system sets a subframe structure for performing shaped-beam transmission, wherein, the step further comprises the sub-steps of setting previous n OFDM symbols in the subframe for purpose of transmitting a control signaling and setting the number of OFDM symbols, which are not the previous n OFDM symbols and are used by user exclusive reference signals, and frequency domain spaces of the reference signals on the same data layer, wherein, n is not less than 1 and mapping positions of the reference signals on difference data layers are not overlapped with each other; and when the system judges to perform the shaped-beam transmission, the subframe structure is dispatched to map and transmit the reference signals. The invention also discloses a shaped-beam transmission device which comprises a subframe structure setting module, a shaped-beam judging module and a mapping and transmission executing module. In the invention, the subframe structure is newly set so that the transmission of the user exclusive reference signals can be supported and the shaped-beam transmission can be performed; and meanwhile, resource consumption of the system is reduced and the method and the device are easy to be realized.
Description
Technical field
The present invention relates to mobile communication technology, be specifically related to a kind of method and apparatus of wave beam forming transmission.
Background technology
At present, 3-G (Generation Three mobile communication system) standardization body (3GPP) has started Long Term Evolution (LTE) research project of 3G wireless interface technology.According to progress, the exclusive reference signal in sub-district (Cell-specified Reference Signal, mapping scheme CsRS) have been defined in the current LTE Standard Edition.
(the Orthogonal Frequency DivisionMultiplexing of all OFDMs in the subframe structure, OFDM) symbol all is used for unicast transmission, do not support broadcast transmitted, this moment subframe in except data symbol and control signaling, can also have two kinds with reference to signal, comprise CsRS and user-specific reference signal (UE-specified Reference Signal, UsRS), wherein CsRS takies 4 antenna ports and transmits, and described antenna port sequence number is 0,1,2,3.This moment subframe the time-frequency domain structural representation as shown in Figure 1, the mapping position of the CsRS on i antenna port of Ri among the figure (i=0,1,2,3) expression, D represents the mapping position of data-signal.
When Cyclic Prefix (CP) is set to weak point CP configuration, comprise 14 OFDM symbols in the subframe, as shown in Figure 1, the CsRS on the port 0,1 takies the 1st, 5,8,12 OFDM symbol on time domain at this moment, and the CsRS on the port 2,3 then takies the 2nd, 9 OFDM symbol; Be spaced apart 6 subcarriers between the reference signal on the frequency domain on the same antenna port.
When CP is set to long CP configuration, comprise 12 OFDM symbols in the subframe, as shown in Figure 1, the CsRS on this moment port 0,1 takies the 1st, 4,7,10 OFDM symbol on time domain, and the CsRS on the port 2,3 then takies the 2nd, 8 OFDM symbol; Be spaced apart 6 subcarriers between the reference signal on the frequency domain on the same antenna port.
The wave beam forming transmission is carried out in the prior LTE system support, but the mapping mode that carries out the needed UsRS of wave beam forming does not propose concrete scheme.When utilizing above-mentioned subframe structure to carry out the wave beam forming transmission, there are CsRS and UsRS simultaneously, at this moment, because Ri is the mapping position of CsRS among Fig. 1, UsRS is merely able to be placed in the data symbol position (D position occupied among Fig. 1), the resource location that will cause can be used in data symbol accordingly reduces, and obviously, the resource overhead that can cause being used in the subframe reference signal transmission like this is bigger.
On the other hand, when carrying out the wave beam forming transmission, and nonessential transmission CsRS, in order to reduce resource overhead, the position that Ri represents among Fig. 1 can be set earlier carry out the transmission of data symbol, in the resource beyond the described Ri position, be provided for transmitting the resource location of UsRS more then, though can reduce resource overhead like this, but need to be transmitted between two kinds of mapping methods and to switch, therefore can increase the complexity of system design greatly according to whether carrying out wave beam forming.
Therefore prior art can't provide a kind of and realize that simple and reference signal mapping takies the method for the less wave beam forming transmission of resource.
Summary of the invention
The embodiment of the invention provides the method and apparatus of a kind of reference signal mapping, makes when carrying out the wave beam forming transmission low in resources consumption and realize simple.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of wave beam forming transmission, this method comprises:
Setting is used to carry out the subframe structure of wave beam forming transmission, comprise: preceding n the orthogonal frequency division multiplex OFDM symbol of setting in the described subframe is used for control channel, n is natural number and n 〉=1, before described, set OFDM symbol numbers that the user-specific reference signal takies and the frequency domain interval between same data Layer reference signal outside n OFDM symbol, and the mapping position non-overlapping copies of the reference signal of different pieces of information layer;
When the wave beam forming transmission was carried out in judgement, scheduling was used described subframe structure to carry out the mapping of reference signal and is transmitted.
A kind of device of wave beam forming transmission, this device comprises: subframe structure is provided with module, wave beam forming determination module and mapping transmission Executive Module;
Subframe structure is provided with module, is used for the predetermined information that storage system is set, and this predetermined information is sent to mapping transmission Executive Module; Described predetermined information is: preceding n the OFDM symbol of setting in the described subframe is used for control channel, n is natural number and n 〉=1, before described, set OFDM symbol numbers that the user-specific reference signal takies and the frequency domain interval between same data Layer reference signal outside n OFDM symbol, and the mapping position non-overlapping copies of the reference signal of different pieces of information layer;
The wave beam forming determination module is judged when carrying out the wave beam forming transmission, and notice mapping transmission Executive Module adopts the subframe structure of setting in the predetermined information to carry out the mapping of reference signal;
Mapping transmission Executive Module, the notice of received beam figuration determination module, the reference signal mapping when subframe structure in the predetermined information that module sends being set carrying out the wave beam forming transmission according to subframe structure is also transmitted.
As seen from the above technical solutions, the method and apparatus of the wave beam forming transmission in the embodiment of the invention has reset new subframe structure, can support the exclusive reference signal of transmission user and carry out wave beam forming, reduced the resource overhead of system simultaneously, and realized simple.
Description of drawings
Fig. 1 is the schematic diagram of descending sub frame structure in the prior art.
Fig. 2 is the schematic flow sheet of the method for wave beam forming transmission in the embodiment of the invention.
Fig. 3 (a) is the schematic diagram of the new subframe structure when using short CP to dispose in the embodiment of the invention.
Fig. 3 (b) is the schematic diagram of the new subframe structure when using long CP to dispose in the embodiment of the invention.
Fig. 3 (c) is the schematic diagram of the new subframe structure when using mixed C P configuration in the embodiment of the invention.
Fig. 4 (a) be in the embodiment of the invention when having a data Layer, the UsRS reference signal under long CP disposes is reused the schematic diagram of MBSFN reference signal mapping position.
Fig. 4 (b) be in the embodiment of the invention when having a data Layer, the UsRS reference signal under the short CP configuration is reused the schematic diagram of MBSFN reference signal mapping position.
Fig. 4 (c) be in the embodiment of the invention when having 2 data Layers, the UsRS reference signal under long CP disposes is reused the schematic diagram of MBSFN reference signal mapping position.
Fig. 4 (d) be in the embodiment of the invention when having 2 data Layers, the UsRS reference signal under the short CP configuration is reused the schematic diagram of MBSFN reference signal mapping position.
Fig. 4 (e) be in the embodiment of the invention when having 3 data Layers, the UsRS reference signal under long CP disposes is reused the schematic diagram of MBSFN reference signal mapping position.
Fig. 4 (f) be in the embodiment of the invention when having 3 data Layers, the UsRS reference signal under the short CP configuration is reused the schematic diagram of MBSFN reference signal mapping position.
There is a data Layer in Fig. 5 (a) in the embodiment of the invention, the UsRS reference signal under the long CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position when frequency domain interval is 4 subcarriers.
There is a data Layer in Fig. 5 (b) in the embodiment of the invention, the UsRS reference signal under the short CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position when frequency domain interval is 4 subcarriers.
There is a data Layer in Fig. 5 (c) in the embodiment of the invention, the UsRS reference signal under the long CP configuration takies 4 OFDM symbols, the schematic diagram of the mapping position when frequency domain interval is 6 subcarriers.
There is a data Layer in Fig. 5 (d) in the embodiment of the invention, the UsRS reference signal under the short CP configuration takies 4 OFDM symbols, the schematic diagram of the mapping position when frequency domain interval is 6 subcarriers.
There are 2 data Layers in Fig. 6 (a) in the embodiment of the invention, the UsRS reference signal under the long CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 4 subcarriers.
There are 2 data Layers in Fig. 6 (b) in the embodiment of the invention, the UsRS reference signal under the short CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 4 subcarriers.
There are 2 data Layers in Fig. 6 (c) in the embodiment of the invention, the UsRS reference signal under the long CP configuration takies 4 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 6 subcarriers.
There are 2 data Layers in Fig. 6 (d) in the embodiment of the invention, the UsRS reference signal under the short CP configuration takies 4 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 6 subcarriers.
There are 3 data Layers in Fig. 7 (a) in the embodiment of the invention, the UsRS reference signal under the long CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 4 subcarriers.
There are 3 data Layers in Fig. 7 (b) in the embodiment of the invention, the UsRS reference signal under the short CP configuration takies 3 OFDM symbols, the schematic diagram of the mapping position the when frequency domain interval of the reference signal of same data Layer is 4 subcarriers.
There are 3 data Layers in Fig. 7 (c) in the embodiment of the invention, the UsRS reference signal of each data Layer under the long CP configuration takies the OFDM symbol of different numbers, the schematic diagram of a kind of mapping position the when frequency domain interval of the reference signal of same data Layer is 6 subcarriers.
There are 3 data Layers in Fig. 7 (d) in the embodiment of the invention, the UsRS reference signal of each data Layer under the short CP configuration takies the OFDM symbol of different numbers, a kind of mapping position schematic diagram the when frequency domain interval of the reference signal of same data Layer is 6 subcarriers.
Fig. 8 is the composition structural representation of the device of wave beam forming transmission in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
When carrying out wave beam forming, terminal need use UsRS to carry out channel estimating, and simultaneously comprise two kind with reference to signal: CsRS and UsRS in the subframe this moment.Owing to used UsRS, therefore can suitably reduce CsRS and even not use CsRS to reduce the resource overhead of system.In this case, a kind of new subframe structure of system definition is used to carry out the wave beam forming transmission.
The embodiment of the invention provides a kind of method of wave beam forming transmission, and the flow process of this method comprises as shown in Figure 2:
Described new subframe can be used for Single Frequency Network operation MBMS service (MultimediaBroadcast/Multicast Service Over Single Frequency Network, MBSFN), only use long CP configuration this moment, the reference signal of using in the described subframe comprises CsRS and MBSFN reference signal simultaneously; Also can be used for unicast transmission, carry out the wave beam forming transmission, select concrete CP Configuration Type according to the size of cell coverage area this moment, and the reference signal of using in the described subframe comprises CsRS and UsRS simultaneously; In addition, when using clean culture and broadcast transmitted simultaneously, can also mix and use long CP and short CP configuration.Therefore, the descending new subframe structure in the embodiment of the invention had both supported to carry out unicast transmission, also supported to carry out broadcast transmitted.
Figure 3 shows that a kind of structure chart of described new subframe structure, wherein C represents to control the position that signaling takies, and R represents the position that the UsRS reference signal takies, and D represents the position that data symbol takies.As shown in Figure 3, the individual OFDM symbol of preceding n (n 〉=1) that the control signaling always takies in the subframe transmits, if transmission CsRS, then CsRS also transmits in described n OFDM symbol.Wherein, Fig. 3 (a) shows the subframe structure under the short CP configuration, is used for unicast transmission; Fig. 3 (b) shows the subframe structure under the long CP configuration, can be used for clean culture or MBSFN transmission; Fig. 3 (c) expression mixes uses long and short CP configuration, be clean culture and the broadcast transmitted subframe structure when existing simultaneously, use short CP to dispose in n OFDM symbol before wherein said, be used for unicast transmission, remaining OFDM symbol uses long CP configuration, is used for the MBSFN transmission.
When not carrying out the wave beam forming transmission, system uses default subframe structure to transmit described in the above-mentioned flow process, and reference symbol mapping mode and the transmission means of this moment are same as the prior art, so no longer describe in detail;
When the user carried out the wave beam forming transmission, system used new subframe structure to carry out the wave beam forming transmission, can take dual mode to obtain the mapping pattern of new reference signal, comprising:
1. part is reused the mapping pattern of MBSFN reference signal in the existing standard.
Because the frequency domain density requirements of UsRS requires lowly than MBSFN reference signal, therefore can be in existing standard shines upon UsRS on the mapping position of MBSFN reference signal.As shown in Figure 4, wherein S1 represents the mapping position of the UsRS on the data Layer 1, and S2 represents the mapping position of the UsRS on the data Layer 2, and S3 represents the mapping position of the UsRS on the data Layer 3, and D represents the position that data symbol takies.Fig. 4 (a) shows when having a data Layer, the reference signal mapping pattern under the long CP configuration, and Fig. 4 (b) is the reference signal mapping pattern when adopting weak point CP configuration; When having two data Layers, Fig. 4 (c) shows the reference signal mapping pattern under the long CP configuration, and Fig. 4 (d) is for adopting the reference signal mapping pattern of short CP configuration; When having three data Layers, Fig. 4 (e) is the reference signal mapping pattern under the long CP configuration, and Fig. 4 (f) is for adopting the reference signal mapping pattern of short CP configuration.
As seen from Figure 4, in the subframe structure of above-mentioned each reference signal mapping pattern, the mapping position of UsRS is the mapping position of MBSFN reference signal; Simultaneously, keeping the frequency domain interval between the reference signal of same data Layer is 6 subcarriers, and reference signal takies 3 OFDM symbols.As seen, the shared OFDM symbol numbers of Ci Shi frequency domain interval and reference signal all is the mapping pattern of having reused the MBSFN reference signal.
2. redesign the mapping pattern of UsRS.
Can also the mapping mode of reference signal be redesigned, the frequency domain interval between the reference signal of same data Layer is reset, the number of the OFDM symbol that reference signal is shared is also reset.
For example: the mapping pattern that reference signal when having a data Layer has been shown among Fig. 5, Fig. 5 (a) is depicted as in the frame structure of long CP configuration, reference signal takies 3 OFDM symbols, and the frequency domain interval between reference signal is when being 4 subcarriers, the mapping pattern of reference signal.Under the short CP configuration of Fig. 5 (b) expression, reference signal takies 3 OFDM symbols, the mapping pattern when frequency domain interval is 4 subcarriers.Fig. 5 (c) shows the mapping pattern of the reference signal under long CP configuration, and be provided with reference signal and take 4 OFDM symbols this moment, and frequency domain interval is 6 subcarriers.Fig. 5 (d) then represents the mapping pattern of the reference signal under the short CP configuration, reference signal is set takies 4 OFDM symbols, and frequency domain interval is 6 subcarriers.
When there being a plurality of data Layers, such as when having 2 data Layers, the mapping pattern of reference signal as shown in Figure 6.Under the long CP configuration of Fig. 6 (a) expression, every layer of reference signal takies 3 OFDM symbols, and the frequency domain interval that is provided with one deck reference signal is 4 subcarriers.Fig. 6 (b) is under the short CP configuration, and every layer of reference signal takies 3 OFDM symbols, and being provided with one deck frequency domain interval is 4 subcarriers.Fig. 6 (c) is provided with every layer of reference signal and takies 4 OFDM symbols under the long CP configuration, and frequency domain interval is 6 subcarriers.Fig. 6 (d) is provided with every layer of reference signal and takies 4 OFDM symbols under the short CP configuration, and frequency domain interval is 6 subcarriers.
When having 4 data Layers for another example, the mapping pattern of reference signal as shown in Figure 7.S1 represents the mapping position of the UsRS on the data Layer 1, and S2 represents the mapping position of the UsRS on the data Layer 2, and S3 represents the mapping position of the UsRS on the data Layer 3, and S4 represents the mapping position of the UsRS on the data Layer 4.
Under the long CP configuration of Fig. 7 (a) expression, every layer of reference signal takies 3 OFDM symbols (all reference signals take 6 OFDM symbols altogether), and the frequency domain interval that is provided with one deck reference signal is 4 subcarriers.Fig. 7 (b) is under the short CP configuration, and every layer reference signal takies 3 OFDM symbols (all reference signals take 6 OFDM symbols altogether), and the frequency domain interval that is provided with one deck reference signal is 4 subcarriers.Fig. 7 (c) is illustrated in long CP configuration down, and the reference signal that is provided with every layer takies a plurality of OFDM symbols, is 6 subcarriers with the frequency domain interval of one deck reference signal.Fig. 7 (d) for short CP configuration down, the reference signal that is provided with every layer takies a plurality of OFDM symbols, is 6 subcarriers with the frequency domain interval of one deck reference signal.
Need to prove that the mapping pattern of all multi-layer datas described in the embodiment of the invention only is a schematic diagram.In actual applications, the data of each layer all are separate on time domain.When the reference signal of each layer was shone upon, the OFDM symbol numbers that not necessarily occupies was identical.With Fig. 7 (c) is example: when carrying out the mapping of ground floor data, and mapping reference signal in the position that described S1 represents, and the represented position of S2, S3, S4 all is used for data map this moment; Similarly, when carrying out the mapping of second layer data, mapping reference signal in the position that described S2 represents, and the represented position of S1, S3, S4 all is used for data map this moment.Simultaneously, S1 and S2 have occupied 4 OFDM symbols, and S3 and S4 have occupied 2 OFDM symbols.Fig. 7 (c) just is identified at all possible mapping position in 4 data Layers on the figure and describes, and need not shine upon according to this pattern when not being illustrated in a mapping process.Understand easily, for the mapping pattern of other multi-layer data in the embodiment of the invention, above-mentioned explanation is suitable for too.
In addition, during the mapping pattern of described redesign UsRS, be not mapped on the position overlapped as long as guarantee the reference signal of different pieces of information layer in principle, the number of the OFDM symbol that takies as for reference signal, and can arbitrarily set satisfying on the basis of described principle with the frequency domain interval of one deck reference signal.In actual applications, set reference signal usually and take 3～4 OFDM sign bits, can be 3～6 subcarriers, and the mapping position of reference signal is distributed in the time-frequency scope of a subframe as far as possible uniformly with the frequency domain interval of one deck reference signal.
As seen from the above, the method of the wave beam forming transmission in the embodiment of the invention can be supported the exclusive reference signal of transmission user and carry out wave beam forming, owing to must not transmit CsRS in n OFDM symbol before described, therefore resource consumption is also lower, and realizes simple.
The embodiment of the invention also provides a kind of device of wave beam forming transmission, and as shown in Figure 8, this device comprises: subframe structure is provided with module 810, wave beam forming determination module 820 and mapping transmission Executive Module 830;
Subframe structure is provided with module 810, is used for the predetermined information that storage system is set, and this predetermined information is sent to mapping transmission Executive Module 820; Described predetermined information is: preceding n the OFDM symbol of setting in the described subframe is used for control channel, n 〉=1, before described, set OFDM symbol numbers that the user-specific reference signal takies and the frequency domain interval between same data Layer reference signal outside n OFDM symbol, and the mapping position non-overlapping copies of the reference signal of different pieces of information layer;
Wave beam forming determination module 820 is judged when carrying out the wave beam forming transmission, and notice mapping transmission Executive Module 830 adopts the subframe structure of setting in the predetermined information to carry out the mapping of reference signal;
Mapping transmission Executive Module 830, the notice of received beam figuration determination module 820, the reference signal mapping when subframe structure in the predetermined information of 810 transmissions of mould being set according to subframe structure carrying out the wave beam forming transmission is also transmitted.
Described subframe structure is provided with in the module 810 and comprises: the OFDM symbol takies number setup unit 811, frequency domain interval setup unit 812 and mapping position record cell 813;
The OFDM symbol takies number setup unit 811, preceding n the OFDM symbol of setting in the described subframe is used for control channel, n is natural number and n 〉=1, before described, set the OFDM symbol numbers that the user-specific reference signal takies outside n OFDM symbol, described set information is sent to frequency domain interval setup unit 812;
Frequency domain interval setup unit 812, the number of shared OFDM symbol when receiving the OFDM symbol and taking the reference signal mapping of the data Layer that number setup unit 811 sends, further set, described set information is sent to mapping position record cell 813 with the frequency domain interval between one deck reference signal;
Described mapping position record cell 813, receive the set information that frequency domain interval setup unit 812 sends, obtain the subframe structure that is used for the wave beam forming transmission of default according to set information, when the wave beam forming transmission is carried out in judgement, described subframe structure is sent to mapping transmission Executive Module 830 as predetermined information.
Preferably, described OFDM symbol takies number setup unit 811 and can also be further used for setting in described n the OFDM symbol and comprise CsRS, and described set information is sent to frequency domain interval setup unit 812.
The embodiment of the invention is not done qualification for concrete mapping ruler; understand easily; the above only is preferred embodiment of the present invention; be not to be used to limit spirit of the present invention and protection range; equivalent variations that any those of ordinary skill in the art made or replacement all should be considered as being encompassed within protection scope of the present invention.
Claims (7)
1, a kind of method of wave beam forming transmission is characterized in that this method comprises:
Setting is used to carry out the subframe structure of wave beam forming transmission, comprise: preceding n the orthogonal frequency division multiplex OFDM symbol of setting in the described subframe is used for control channel, n is natural number and n 〉=1, before described, set OFDM symbol numbers that the user-specific reference signal takies and the frequency domain interval between same data Layer reference signal outside n OFDM symbol, and the mapping position non-overlapping copies of the reference signal of different pieces of information layer;
When the wave beam forming transmission was carried out in judgement, scheduling was used described subframe structure to carry out the mapping of reference signal and is transmitted.
2, method according to claim 1 is characterized in that, sets the OFDM symbol numbers that the user-specific reference signal takies and the method for the frequency domain interval between same data Layer reference signal outside n OFDM symbol and comprise before described:
The user-specific reference signal of setting the wave beam forming transmission is shone upon on the mapping position of Single Frequency Network operation MBMS service MBSFN reference signal, and the frequency domain interval of setting between same data Layer reference signal is 6 subcarriers.
3, method according to claim 1 is characterized in that, sets the OFDM symbol numbers that the user-specific reference signal takies and the method for the frequency domain interval between same data Layer reference signal outside n OFDM symbol and comprise before described:
The user-specific reference signal of setting the wave beam forming transmission takies that n OFDM symbol any a plurality of OFDM symbols afterwards shine upon in the subframe, and the frequency domain interval of setting between same data Layer reference signal is any a plurality of subcarrier.
4, method according to claim 1 is characterized in that, can further include the exclusive reference signal in sub-district in described n the OFDM symbol.
5, a kind of device of wave beam forming transmission is characterized in that this device comprises: subframe structure is provided with module, wave beam forming determination module and mapping transmission Executive Module;
Subframe structure is provided with module, is used for the predetermined information that storage system is set, and this predetermined information is sent to mapping transmission Executive Module; Described predetermined information is: preceding n the OFDM symbol of setting in the described subframe is used for control channel, n is natural number and n 〉=1, before described, set OFDM symbol numbers that the user-specific reference signal takies and the frequency domain interval between same data Layer reference signal outside n OFDM symbol, and the mapping position non-overlapping copies of the reference signal of different pieces of information layer;
The wave beam forming determination module is judged when carrying out the wave beam forming transmission, and notice mapping transmission Executive Module adopts the subframe structure of setting in the predetermined information to carry out the mapping of reference signal;
Mapping transmission Executive Module, the notice of received beam figuration determination module, the reference signal mapping when subframe structure in the predetermined information that module sends being set carrying out the wave beam forming transmission according to subframe structure is also transmitted.
6, device according to claim 5 is characterized in that, described subframe structure is provided with in the module and comprises: the OFDM symbol takies the number setup unit, frequency domain interval setup unit and mapping position record cell;
The OFDM symbol takies the number setup unit, preceding n the OFDM symbol of setting in the described subframe is used for control channel, the OFDM symbol numbers that the user-specific reference signal takies is set outside n OFDM symbol in n 〉=1 before described, described set information is sent to the frequency domain interval setup unit;
The frequency domain interval setup unit, the number of shared OFDM symbol when receiving the OFDM symbol and taking the reference signal mapping of the data Layer that the number setup unit sends, further set, described set information is sent to the mapping position record cell with the frequency domain interval between one deck reference signal;
Described mapping position record cell, receive the set information that the frequency domain interval setup unit sends, obtain the subframe structure that is used for the wave beam forming transmission of default according to set information, when the wave beam forming transmission is carried out in judgement, described subframe structure is sent to mapping transmission Executive Module as predetermined information.
7, device according to claim 5 is characterized in that, described OFDM symbol takies the number setup unit and is further used for setting in described n the OFDM symbol and comprises the exclusive reference signal in sub-district, and described set information is sent to the frequency domain interval setup unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710178166 CN101447815B (en) | 2007-11-27 | 2007-11-27 | Shaped-beam transmission method and shaped-beam transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710178166 CN101447815B (en) | 2007-11-27 | 2007-11-27 | Shaped-beam transmission method and shaped-beam transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101447815A true CN101447815A (en) | 2009-06-03 |
| CN101447815B CN101447815B (en) | 2013-02-13 |
Family
ID=40743250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710178166 Active CN101447815B (en) | 2007-11-27 | 2007-11-27 | Shaped-beam transmission method and shaped-beam transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101447815B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105423A1 (en) * | 2009-03-18 | 2010-09-23 | 华为技术有限公司 | Method and apparatus for transmitting ue specific reference signal |
| WO2010145276A1 (en) * | 2009-06-19 | 2010-12-23 | 松下电器产业株式会社 | Method and device for superimposing reference signal and data based on space division multiple access |
| WO2011015065A1 (en) * | 2009-08-07 | 2011-02-10 | 中兴通讯股份有限公司 | Sending method for reference signals |
| CN101616360B (en) * | 2009-07-24 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for sending positioning reference signal |
| CN101719888B (en) * | 2009-11-10 | 2013-03-20 | 中兴通讯股份有限公司 | System and method for mapping reference signal sequence in long term evolution-advanced (LTE-A) system |
| CN103024917A (en) * | 2011-09-26 | 2013-04-03 | 普天信息技术研究院有限公司 | Method for reducing spending of downlink measurement signal under transmission mode |
| WO2014015800A1 (en) * | 2012-07-24 | 2014-01-30 | 电信科学技术研究院 | Method and device for transmitting downlink user equipment specific demodulation reference signal |
| WO2017067436A1 (en) * | 2015-10-23 | 2017-04-27 | 华为技术有限公司 | Downlink synchronization method, user equipment and base station |
| WO2017166125A1 (en) * | 2016-03-30 | 2017-10-05 | Panasonic Intellectual Property Corporation Of America | Wireless communication device and wireless communication method |
| CN107666379A (en) * | 2016-07-28 | 2018-02-06 | 北京信威通信技术股份有限公司 | A kind of method and device for sending data |
| WO2019096195A1 (en) * | 2017-11-17 | 2019-05-23 | 华为技术有限公司 | Communication method and apparatus |
| CN109802818A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | Communication means and device |
| CN111585699A (en) * | 2016-12-03 | 2020-08-25 | 上海朗帛通信技术有限公司 | Method and device used in UE (user equipment) and base station for multi-antenna transmission |
| CN112615706A (en) * | 2016-01-15 | 2021-04-06 | 中兴通讯股份有限公司 | Signal sending method, signal receiving method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3580495B2 (en) * | 2000-08-25 | 2004-10-20 | 日本電気株式会社 | Adaptive antenna receiver |
-
2007
- 2007-11-27 CN CN 200710178166 patent/CN101447815B/en active Active
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105423A1 (en) * | 2009-03-18 | 2010-09-23 | 华为技术有限公司 | Method and apparatus for transmitting ue specific reference signal |
| US8797993B2 (en) | 2009-06-19 | 2014-08-05 | Panasonic Intellectual Property Corporation Of America | Method and device for superimposing reference signal and data based on space division multiple access |
| WO2010145276A1 (en) * | 2009-06-19 | 2010-12-23 | 松下电器产业株式会社 | Method and device for superimposing reference signal and data based on space division multiple access |
| CN102804624A (en) * | 2009-06-19 | 2012-11-28 | 松下电器产业株式会社 | Method And Device For Superimposing Reference Signal And Data Based On Space Division Multiple Access |
| CN102804624B (en) * | 2009-06-19 | 2015-07-29 | 松下电器（美国）知识产权公司 | Based on the method that the reference signal of space division multiple access access superposes with data-signal |
| CN101616360B (en) * | 2009-07-24 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for sending positioning reference signal |
| CN101626620B (en) * | 2009-08-07 | 2014-03-12 | 中兴通讯股份有限公司 | Transmitting method of reference signal |
| WO2011015065A1 (en) * | 2009-08-07 | 2011-02-10 | 中兴通讯股份有限公司 | Sending method for reference signals |
| CN101719888B (en) * | 2009-11-10 | 2013-03-20 | 中兴通讯股份有限公司 | System and method for mapping reference signal sequence in long term evolution-advanced (LTE-A) system |
| CN103024917A (en) * | 2011-09-26 | 2013-04-03 | 普天信息技术研究院有限公司 | Method for reducing spending of downlink measurement signal under transmission mode |
| CN103024917B (en) * | 2011-09-26 | 2015-07-15 | 普天信息技术研究院有限公司 | Method for reducing spending of downlink measurement signal under transmission mode |
| WO2014015800A1 (en) * | 2012-07-24 | 2014-01-30 | 电信科学技术研究院 | Method and device for transmitting downlink user equipment specific demodulation reference signal |
| CN106612540B (en) * | 2015-10-23 | 2020-12-15 | 华为技术有限公司 | Downlink synchronization method, user equipment and base station |
| WO2017067436A1 (en) * | 2015-10-23 | 2017-04-27 | 华为技术有限公司 | Downlink synchronization method, user equipment and base station |
| CN106612540A (en) * | 2015-10-23 | 2017-05-03 | 华为技术有限公司 | A method, user equipment and base station for realizing downlink synchronization |
| CN112615706B (en) * | 2016-01-15 | 2022-08-19 | 中兴通讯股份有限公司 | Signal sending method, signal receiving method and device |
| CN112615706A (en) * | 2016-01-15 | 2021-04-06 | 中兴通讯股份有限公司 | Signal sending method, signal receiving method and device |
| WO2017166125A1 (en) * | 2016-03-30 | 2017-10-05 | Panasonic Intellectual Property Corporation Of America | Wireless communication device and wireless communication method |
| CN107666379A (en) * | 2016-07-28 | 2018-02-06 | 北京信威通信技术股份有限公司 | A kind of method and device for sending data |
| CN111585699A (en) * | 2016-12-03 | 2020-08-25 | 上海朗帛通信技术有限公司 | Method and device used in UE (user equipment) and base station for multi-antenna transmission |
| US11546110B2 (en) | 2016-12-03 | 2023-01-03 | Apex Beam Technologies Llc | Method and device for multi-antenna transmission in user equipment (UE) and base station |
| CN111585699B (en) * | 2016-12-03 | 2022-05-10 | 极光技术咨询有限责任公司 | Method and device used in UE (user equipment) and base station for multi-antenna transmission |
| WO2019096195A1 (en) * | 2017-11-17 | 2019-05-23 | 华为技术有限公司 | Communication method and apparatus |
| CN109802818A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | Communication means and device |
| CN110401471A (en) * | 2017-11-17 | 2019-11-01 | 华为技术有限公司 | Communication means and device |
| CN109802818B (en) * | 2017-11-17 | 2022-05-10 | 华为技术有限公司 | Communication method and device |
| CN110401471B (en) * | 2017-11-17 | 2020-07-07 | 华为技术有限公司 | Communication method and device, computer readable storage medium |
| US11374716B2 (en) | 2017-11-17 | 2022-06-28 | Huawei Technologies Co., Ltd. | Communication method and communication apparatus |
| CN110401470B (en) * | 2017-11-17 | 2020-07-07 | 华为技术有限公司 | Communication method and device, computer readable storage medium |
| CN110401470A (en) * | 2017-11-17 | 2019-11-01 | 华为技术有限公司 | Communication means and device |
| US11962534B2 (en) | 2017-11-17 | 2024-04-16 | Huawei Technologies Co., Ltd. | Communication method and communications apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101447815B (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101447815B (en) | Shaped-beam transmission method and shaped-beam transmission device | |
| US9578641B2 (en) | Method and apparatus of receiving different types of subframes in mobile communication system | |
| KR101238483B1 (en) | A method for acquiring/configuring the multicast/broadcast over single frequency network sub-frame and an acquiring apparatus thereof | |
| CN101998244B (en) | Method, equipment and system for configuring MBMS (Multimedia Broadcast Multicast Service) control information | |
| KR101298959B1 (en) | A method and device for pilot mapping in multiplexing mode of unicast and broadcast/multicast services | |
| US9125174B2 (en) | Apparatuses and methods for selectively receiving multimedia broadcast/multicast service in a wireless communications system | |
| EP2365705B1 (en) | Communication devices and methods thereof | |
| CN102378110B (en) | Methods for sending and receiving demodulated reference signal (DM-RS) and devices for sending and receiving DM-RS | |
| CA2699082A1 (en) | Multimedia broadcast multicast service channel mapping and multiplexing | |
| CN101552950B (en) | Method and device for transmitting multimedia broadcast service control data | |
| CN104038311A (en) | PMCH transmission method and equipment | |
| US20100195628A1 (en) | Apparatus and method for time-division multiplexing (tdm) for multiple signal ofdm signal formats | |
| CN101552949B (en) | Method and device for transmitting broadcast data during overlapping and coverage of multicast broadcast single frequency network (MBSFN) areas | |
| US8340012B2 (en) | Device and method for controlling user equipment access to services of the MBMS type offered by a mobile network | |
| CN114598417A (en) | Method and apparatus in a node used for wireless communication | |
| CN101958784B (en) | Communication method and device in TDD (Time Division Duplex) system | |
| CN102487480B (en) | A kind of system of selection of carrier wave of transmitting multimedia broadcast multicast MBMS services, device | |
| JP6421761B2 (en) | Apparatus and method | |
| CN102761836A (en) | Method and device for downlink trunking communication | |
| CN106604201A (en) | Wireless time-frequency resource distribution and indication method of broadband trunked DMO system | |
| CN101820583B (en) | Method for configuring and transmitting control information of multicast broadcasting service and base station | |
| CN103856901B (en) | The sending method of MBMS data | |
| CN101969603A (en) | Method and system for bearing multi-media broadcast multicast service | |
| CN101500280B (en) | Method for softer handoff | |
| CN108605243A (en) | Wireless communication device, communication means, computer program and wireless communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20110620 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110620 Address after: 100191 Haidian District, Xueyuan Road, No. 40, Applicant after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100083 Haidian District, Xueyuan Road, No. 29, Applicant before: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210603 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |