CN102123022A - Method and device for mapping demodulation reference signals (DMRS) - Google Patents
Method and device for mapping demodulation reference signals (DMRS) Download PDFInfo
- Publication number
- CN102123022A CN102123022A CN2010100038617A CN201010003861A CN102123022A CN 102123022 A CN102123022 A CN 102123022A CN 2010100038617 A CN2010100038617 A CN 2010100038617A CN 201010003861 A CN201010003861 A CN 201010003861A CN 102123022 A CN102123022 A CN 102123022A
- Authority
- CN
- China
- Prior art keywords
- demodulation reference
- reference mark
- layer
- prb
- occ
- 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
Images
Abstract
The invention discloses a method and device for mapping demodulation reference signals (DMRS). The method comprises the following steps: treating the DMRS by orthogonal code cover (OCC) and mapping the DMRS treated by OCC on physical resource blocks (PRB) according to the DMRS overheads and DMRS positions in each PRB, wherein when the extended cyclic prefix (CP) is adopted, the same total DMRS overhead is adopted in each PRB under the condition of different downlink transmission layer numbers. The method and the device have the beneficial effects of ensuring the DMRS to be backward compatible during mapping and reducing the mapping complexity of the transmitting end and the receiving complexity of the receiving end.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of mapping method and device of demodulation reference mark.
Background technology
The high-order multi-antenna technology is one of key technology of senior Long Term Evolution (LTE-A or LTE-Advanced, Long TermEvolution Advanced) system, in order to improve system transmissions speed.In order to realize introducing channel quality measurement and the data demodulates behind the high-order multi-antenna technology, the LTE-Advanced system has defined two class frequency pilot signs respectively: demodulation reference mark (DMRS, Demodulation ReferenceSignal) and channel quality measurement reference symbol (CSI-RS, Channel State Information-Reference Signal), wherein, DMRS is used for the demodulation of Physical Downlink Shared Channel (PDSCH, PhysicalDownlink Shared Channel).The CSI-RS that is used for CSI (channel state information) measurement is used for channel quality indication (CQI, Channel Quality Indicator), pre-coding matrix indication (PMI, Precoding Matrix Indicator), stratum's indication information such as (RI, Rank Indicator) reports.The structure of two class reference symbols can be used for supporting as multipoint cooperative (CoMP, Coordinated Multi-Point), the new technical feature of LTE-A such as spatial reuse.
In LTE, that adopt is common reference symbol (CRS, Common Reference Signal) carries out pilot measurement, just all users use common pilot to carry out channel estimating, and this CRS needs emitting side which kind of pretreatment mode of additionally having notified the The data of receiving terminal to emission, and simultaneously expense is bigger, in addition in multi-user's multiple-input and multiple-output (MU-MIMO), because a plurality of UE are using identical CRS, can't realize the quadrature of pilot tone, therefore be unable to estimate interference.
In LTE-A, in order to reduce the expense of pilot tone, witness mark symbol and demodulation reference mark are separately designed, the pretreatment mode that demodulated reference signal is identical with The data, while is according to the available order information mapping reference symbol of dispatched users respective channels, therefore can adaptively adjust expense,, can reduce expense greatly like this in the lower situation of order according to order information.The characteristics of demodulation reference mark comprise: (1) terminal is distinctive, as: the precoding processing that the demodulation reference mark of particular terminal correspondence is identical with the The data of dispatched users; (2) only exist only in network side (as eNodeB) on transfer of data institute scheduled resources and the layer; (3) at network side, the demodulation reference mark of transmitting on the different layers is mutually orthogonal.
When adopting extended cyclic prefix (CP, Cyclic Prefix), it is 4 that a lot of companies mention maximum layer (layer) number of supporting, order (rank) and layer have corresponding relation.In the discussion in early stage, it is 1～2 o'clock that high pass proposes in number of layers, and adopting as shown in Figure 2, the pilot tone pattern carries out the DMRS mapping; And the proposition of companies such as Ericsson is that 1～4 employing pattern shown in Figure 3 carries out the DMRS mapping in number of layers.
How making DMRS when mapping can backward compatibility, and reduce the mapping complex degree of transmitting terminal and the reception complexity of receiving terminal, be the problem of needing solution at present badly.
Summary of the invention
The technical problem to be solved in the present invention is exactly mapping method and the device that proposes a kind of demodulation reference mark, can reduce the reception complexity of the mapping complex degree and the receiving terminal of transmitting terminal.
In order to solve the problems of the technologies described above, the invention provides a kind of mapping method of demodulation reference mark, comprising:
Demodulation reference mark is handled with quadrature mask (OCC),, will be mapped on the PRB through the demodulation reference mark that OCC handles according to the position of demodulation reference mark expense in each Physical Resource Block (PRB) and demodulation reference mark;
Wherein, when adopting extended cyclic prefix (CP), under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
Further, said method also can have following characteristics:
When the number of layer is 1 or 2, adopting length between each layer is that 2 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction.
Further, said method also can have following characteristics:
When the number of layer is 3 or 4, adopting length between each layer is that 4 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction.
Further, said method also can have following characteristics:
When the number of layer is 3 or 4, adopt the hybrid multiplex mode of code division multiplexing and frequency division multiplexing between each layer:
The RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 2 layers adopt frequency division multiplexing between two groups;
Each layer employing length in same group is 2 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.
Further, said method also can have following characteristics:
When the number of layer is 5～8, adopt the hybrid multiplex mode of code division multiplexing and frequency division multiplexing between each layer:
The RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 4 layers adopt frequency division multiplexing between two groups;
Each layer employing length in same group is 4 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.
Further, said method also can have following characteristics:
Total demodulation reference mark expense is 16 RE or 24 RE among each PRB.
Further, said method also can have following characteristics:
The frequency domain carrier spacing of the RE of demodulation reference mark correspondence is 1 or 2 carrier spacing, between the PRB and/or the carrier spacing of every layer of DMRS in the PRB identical; Corresponding the 5th, 6,11,12 OFDM symbols of the time domain of mapping.
Further, said method also can have following characteristics:
On the different time-gap of a subframe, the frequency domain position of demodulation reference mark correspondence carries out the staggered of 1 carrier wave or 2 carrier waves.
In order to solve the problems of the technologies described above, the invention provides a kind of mapping device of demodulation reference mark, comprise OCC processing module and mapping block;
Described OCC processing module is used for demodulation reference mark is handled with OCC;
Described mapping block is used for the position according to each PRB demodulation reference mark expense and demodulation reference mark, will be mapped on the PRB through the demodulation reference mark that OCC handles; Wherein, when adopting expansion CP, under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
Further, said apparatus also can have following characteristics:
Total demodulation reference mark expense is 16 RE or 24 RE among each PRB.
Backward compatibility when the present invention can make the DMRS mapping, and reduce the mapping complex degree of transmitting terminal and the reception complexity of receiving terminal.Higher when user's speed of service, when channel performance is relatively poor, transmit with 1 or 2 layers (layer), guarantee user's transmission quality; When user's speed of service is lower, and channel condition can use 3 or 4 layers transmission when better, thus the transmission capacity of the system of assurance.Number of layers be 1～2 and number of layers be 3～4 o'clock, only need to change quadrature mask (OCC) length, can accomplish number of layers be 1～2 and number of layers be 3～4 compatible preferably.Because adopt identical DMRS expense, the present invention has avoided simultaneously under the situation of different layers number, the signal power of every layer of DMRS and the deviation between the data power on the respective layer have reduced the reception complexity, need not to use extra control signaling.
Description of drawings
Fig. 1 a is under the normal cyclic prefix situation, and the number of layers of conventional subframe is 1～4 demodulation reference mark pattern baseline (baseline);
Fig. 1 b is under the normal cyclic prefix situation, and number of layers is 1～4 demodulation reference mark pattern baseline (baseline) during 12 or 11 OFDM symbols of descending pilot frequency time slot configuration;
Fig. 1 c is under the normal cyclic prefix situation, and number of layers is 1～4 demodulation reference mark pattern baseline (baseline) during 10 or 9 OFDM symbols of descending pilot frequency time slot configuration;
Fig. 2～Fig. 3 is the demodulation reference mark pattern design under the existing expansion CP situation;
Fig. 4 a and Fig. 4 b are that the number of layers of the embodiment of the invention one is the demodulation reference mark pattern design of the DMRS expense of 24 RE of employing in 3～4 o'clock;
Fig. 5 a and Fig. 5 b are that the number of layers of the embodiment of the invention one is the demodulation reference mark pattern design of the DMRS expense of 16 RE of employing in 3～4 o'clock;
Fig. 6 is 3～4 o'clock demodulation reference mark pattern designs for the number of layers of the embodiment of the invention two;
Fig. 7 is 5～8 o'clock demodulation reference mark pattern designs for the number of layers of the embodiment of the invention three;
Fig. 8 is the device schematic diagram of the embodiment of the invention.
Embodiment
Simulation result shows, adopting under the expansion CP situation, and when main considerations Vehicle B (vehicle-mounted B) channel circumstance, the frequency domain carrier spacing is that 1 carrier performance is best, and the interval is during greater than 1 carrier wave, and performance can descend.When considering TU (Typical Urban, typical city) channel scene, the carrier spacing is 3～4 o'clock, and performance is best.Adopt pattern shown in Figure 3, under high speed TU channel situation, because stagger (interlocking) can make performance descend to some extent.
When adopting 4 layers of transmission of the maximum support of expansion CP, be mainly used in the lower user of speed this moment, and for the lower user of speed, the corresponding time domain of its channel is longer coherence time, can suppose that channel is constant substantially in a subframe; Perhaps mainly at middle low speed user, it is not serious situation very relatively that the frequency domain selectivity is led.Number of layers is 3～4 design simultaneously, should be 1～2 pattern compatibility with number of layers as far as possible.
The mapping method of demodulation reference mark of the present invention comprises: demodulation reference mark is handled with OCC, according to the position of demodulation reference mark expense and demodulation reference mark among each PRB, will be mapped on the PRB through the demodulation reference mark that OCC handles; Wherein, when adopting expansion CP, under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
Preferably, when the maximum number of layers of system's support equaled 4, it was multiplexing to adopt the code division multiplexing mode of time domain direction to carry out DMRS, specifically comprises:
When the number of layer is 1 or 2, adopting length between each layer is that 2 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction;
When the number of layer is 3 or 4, adopting length between each layer is that 4 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction.
Preferably, when the maximum number of layers of system's support was 8, the hybrid multiplex mode that can adopt the code division multiplexing of time domain direction to combine with time-division/frequency division multiplexing specifically comprised:
Mode 1: when number of layers smaller or equal to 2 the time, each layer adopts code division multiplexing; When number of layers is 3～8, can adopt code division multiplexing+time-division/mode of frequency division multiplexing, specifically can be:
When the number of layer is 3 or 4, the RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 2 layers adopt frequency division multiplexing between two groups; Each layer employing length in same group is 2 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.That is to say, for number of layers 1～2 compatibility, can be equally spaced layer 1～2 and the layer 3～4 distributed to of RE on the frequency domain of 1～2 o'clock correspondence with number of layers.
When the number of layer is 5～8, the RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 4 layers adopt frequency division multiplexing between two groups; Each layer employing length in same group is 4 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.
Mode 2: when number of layers smaller or equal to 4 the time, adopt the code division multiplexing mode between each layer; When number of layers is 5～8, the hybrid multiplex mode that the code division multiplexing of employing time domain direction combines with time-division/frequency division multiplexing.Specifically can be:
When number of layers is 1～4, the mode of code division multiplexing is identical with the mode when the number of layers maximum is supported 4 layers noted earlier; When number of layers is 5～8, with number of layers in the mode 1 be 5～8 o'clock identical.
In addition, preferably, above-mentioned number of layers is in 1～8, and total demodulation reference mark expense is 16 RE or 24 RE among each PRB.
Preferably, the frequency domain carrier spacing of the RE of demodulation reference mark correspondence is 1 or 2 carrier spacing, and preferably is spaced apart 1 carrier wave; Between the PRB and/or the carrier spacing of every layer of DMRS in the PRB identical; Corresponding the 5th, 6,11,12 the OFDM symbols of the time domain of mapping.
On the different time-gap of a subframe, the frequency domain position of demodulation reference mark correspondence can carry out the staggered of 1 carrier wave or 2 carrier waves.
Equaling 4 with the number of layers of distributing below is that example describes the process that OCC handles, and supposes that simultaneously 4 layers carry out the orthogonal code that code division multiplexing adopted and are respectively
c
11，c
12，c
13，c
14；?c
21，c
22，c
23，c
24；?c
31，c
32，c
33，c
34；?c
41，c
42，c
43，c
44
For single user's multiple-input and multiple-output (SU-MIMO), adopt identical demodulation reference mark sequence, r (xn between each layer
1+ 1) ... ..r (x (n
2+ 1)), note is made p
0, p
1, p
2... .., p
K-1, k=x (n
2-n
1+ 1) be sequence length, and handle with the orthogonal code of different layers correspondence respectively that after the processing, the demodulation reference mark sequence of each layer correspondence is respectively:
layer0：c
11p
0，c
12p
1，c
13p
2，c
14p
3，c
11p
5，c
12p
6，....c
14p
k
layer1：c
21p
0，c
22p
1，c
23p
2，c
24p
3，c
21p
5，c
22p
6，....c
24p
k
layer2：c
31p
0，c
32p
1，c
33p
2，c
34p
3，c
31p
5，c
32p
6，....c
34p
k’
layer3：c
41p
0，c
42p
1，c
43p
2，c
44p
3，c
41p
5，c
42p
6，....c
44p
k
During actual the realization, also can afterwards the demodulation reference mark sequence be handled in the mapping of overturning of the orthogonal code of different layers.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
Embodiment 1
With reference to Fig. 4～Fig. 5, demodulation reference mark is carried out OCC handle, according to the position of demodulation reference mark among each PRB and expense demodulation reference mark, will be mapped on the PRB through the demodulation reference mark that OCC handles.
Wherein Fig. 4 a is the pattern based on Fig. 2, a kind of demodulation reference mark detail of design of design based on CDM, according to this pattern, number of layers be 3～4 o'clock be to keep identical demodulation reference mark pilot-frequency expense at 1～2 o'clock with number of layers, being 24RE/PRB, is 1 subcarrier with the frequency domain interval of the demodulation reference mark of one deck correspondence; Fig. 5 a is the situation of 16RE/PRB for the demodulation reference mark expense, and this moment, the demodulation reference mark frequency domain interval with one deck correspondence was 2 subcarriers.It is multiplexing to carry out CDM between each layer on the time domain direction, and promptly used OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing to the demodulation reference mark on the distinct symbols on the time domain direction, (RE on the OFDM symbol shown in oval frame among the figure).Shared RE position be respectively (x, y), wherein x represents the index of OFDM symbol, y represents the relative subcarrier sequence number in the PRB, the value of x and y is
Or
CDM is multiplexing to carry out on the different OFDM symbols of same frequency domain position.Promptly according to above-mentioned position, be example with the expense during for 24RE/PRB, the RE of DMRS is divided into 6 groups, the RE in each group carries out code division multiplexing, is respectively:
Group 1:{ (x
1, y
1), (x
2, y
1), (x
3, y
1), (x
4, y
1),
Group 2:{ (x
1, y
2), (x
2, y
2), (x
3, y
2), (x
4, y
2),
Group 3:{ (x
1, y
3), (x
2, y
3), (x
3, y
3), (x
4, y
3),
Group 4:{ (x
1, y
4), (x
2, y
4), (x
3, y
4), (x
4, y
4),
Group 5:{ (x
1, y
5), (x
2, y
5), (x
3, y
5), (x
4, y
5),
Group 6:{ (x
1, y
6), (x
2, y
6), (x
3, y
6), (x
4, y
6)
When expense is 16 RE/PRB, the RE of DMRS is divided into 4 groups, the RE in each group carries out the code division multiplexing of OCC=4, is respectively:
Group 1:{ (x
1, y
1), (x
2, y
1), (x
3, y
1), (x
4, y
1),
Group 2:{ (x
1, y
2), (x
2, y
2), (x
3, y
2), (x
4, y
2),
Group 3:{ (x
1, y
3), (x
2, y
3), (x
3, y
3), (x
4, y
3),
Group 4:{ (x
1, y
4), (x
2, y
4), (x
3, y
4), (x
4, y
4),
In above-mentioned example, for the adaptation layer number is 2 processing, also can be to the position of above-mentioned correspondence, will with x
3And x
4Add the skew of 1 or 2 carrier wave on the basis of corresponding above-mentioned frequency domain position, even its corresponding y
k=y
k+ Δ l, Δ l are 1 or 2.Shown in Fig. 4 b and Fig. 5 b.
Embodiment 2
In number of layers is 3～4 o'clock, based on another specific embodiment of mapping mode of the present invention as shown in Figure 6.Overhead still remains 24 RE, on frequency domain direction, is divided into 2 groups with the demodulation pilot frequency symbol is equally spaced:
And one group of RE of per 2 layers of correspondence carries out OCC length on two adjacent OFDM symbols be 2 code division multiplexing, and two groups frequency domain position carries out under the situation of circulation rotation in the frequency domain, and the rotation size is identical.
Simultaneously, position and the number of layers that in number of layers is the shared total DMRS of 3～4 o'clock each layers is that the position of the shared total DMRS RE of 1～2 o'clock each layer is identical, the RE that is about to number of layers and is at 1～2 o'clock is divided into 2 groups, distributes to number of layers respectively and be 3～4 o'clock preceding 2 layers and back 2 layers.
Embodiment 3
For being 5～8 o'clock, based on the schematic diagram of mapping mode of the present invention as shown in Figure 7, under the situation identical with the RE position with the expense of layer 3～4 pattern, the length that OCC is set is 4, and carries out code division multiplexing on 4 OFDM symbols of time domain in number of layers.Simultaneously all RE are divided into 2 groups in that frequency domain is equally spaced, and the DMRS of every group of multiplexing 4 layers of RE, frequency division multiplexing adopted between two groups.
As shown in Figure 8, the mapping device of the demodulation reference mark of the embodiment of the invention can be applicable to the transmitting terminal of base station or subscriber equipment (UE), comprises OCC processing module and mapping block;
Described OCC processing module is used for demodulation reference mark is handled with OCC;
Described mapping block is used for the position according to each PRB demodulation reference mark expense and demodulation reference mark, will be mapped on the PRB through the demodulation reference mark that OCC handles; Wherein, when adopting expansion CP, under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the mapping method of a demodulation reference mark comprises:
Demodulation reference mark is handled with quadrature mask (OCC),, will be mapped on the PRB through the demodulation reference mark that OCC handles according to the position of demodulation reference mark expense in each Physical Resource Block (PRB) and demodulation reference mark;
Wherein, when adopting extended cyclic prefix (CP), under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
2. the method for claim 1 is characterized in that,
When the number of layer is 1 or 2, adopting length between each layer is that 2 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction.
3. the method for claim 1 is characterized in that,
When the number of layer is 3 or 4, adopting length between each layer is that 4 OCC sign indicating number carries out Orthogonal Frequency Division Multiplexing in the time domain direction.
4. the method for claim 1 is characterized in that,
When the number of layer is 3 or 4, adopt the hybrid multiplex mode of code division multiplexing and frequency division multiplexing between each layer:
The RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 2 layers adopt frequency division multiplexing between two groups;
Each layer employing length in same group is 2 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.
5. the method for claim 1 is characterized in that,
When the number of layer is 5～8, adopt the hybrid multiplex mode of code division multiplexing and frequency division multiplexing between each layer:
The RE of all the DMRS correspondences that will shine upon on frequency domain uniformly-spaced is divided into two groups, and every group of corresponding 4 layers adopt frequency division multiplexing between two groups;
Each layer employing length in same group is 4 OCC sign indicating number, at the every two-layer Orthogonal Frequency Division Multiplexing that carries out of time domain direction.
6. as any described method in the claim 1～5, it is characterized in that,
Total demodulation reference mark expense is 16 RE or 24 RE among each PRB.
7. as any described method in the claim 1～5, it is characterized in that,
The frequency domain carrier spacing of the RE of demodulation reference mark correspondence is 1 or 2 carrier spacing, between the PRB and/or the carrier spacing of every layer of DMRS in the PRB identical; Corresponding the 5th, 6,11,12 OFDM symbols of the time domain of mapping.
8. as any described method in the claim 1～5, it is characterized in that,
On the different time-gap of a subframe, the frequency domain position of demodulation reference mark correspondence carries out the staggered of 1 carrier wave or 2 carrier waves.
9. the mapping device of a demodulation reference mark is characterized in that, comprises OCC processing module and mapping block;
Described OCC processing module is used for demodulation reference mark is handled with OCC;
Described mapping block is used for the position according to each PRB demodulation reference mark expense and demodulation reference mark, will be mapped on the PRB through the demodulation reference mark that OCC handles; Wherein, when adopting expansion CP, under different downlink transfer number of layers situations, adopt identical total demodulation reference mark expense among each PRB.
10. device as claimed in claim 9 is characterized in that,
Total demodulation reference mark expense is 16 RE or 24 RE among each PRB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003861.7A CN102123022B (en) | 2010-01-08 | 2010-01-08 | Method and device for mapping demodulation reference signals (DMRS) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003861.7A CN102123022B (en) | 2010-01-08 | 2010-01-08 | Method and device for mapping demodulation reference signals (DMRS) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102123022A true CN102123022A (en) | 2011-07-13 |
| CN102123022B CN102123022B (en) | 2015-04-01 |
Family
ID=44251488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010003861.7A Active CN102123022B (en) | 2010-01-08 | 2010-01-08 | Method and device for mapping demodulation reference signals (DMRS) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102123022B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096479A (en) * | 2011-11-03 | 2013-05-08 | 中国移动通信集团公司 | Sending method and equipment of up link demodulation reference signals |
| CN103248469A (en) * | 2012-02-03 | 2013-08-14 | 中兴通讯股份有限公司 | Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station |
| WO2017028364A1 (en) * | 2015-08-19 | 2017-02-23 | 华为技术有限公司 | Reference signal assignment method and equipment |
| CN107113272A (en) * | 2015-09-25 | 2017-08-29 | 华为技术有限公司 | A kind of method for mapping resource and device |
| CN107181579A (en) * | 2016-03-11 | 2017-09-19 | 北京信威通信技术股份有限公司 | A kind of descending DMRS resource multiplexing methods |
| CN107623563A (en) * | 2016-07-11 | 2018-01-23 | 北京信威通信技术股份有限公司 | A kind of method and device of configuration DMRS in V2X communications |
| CN108347320A (en) * | 2017-01-24 | 2018-07-31 | 中兴通讯股份有限公司 | A kind of processing method and processing device of transmission power condition conversion time |
| CN115842704A (en) * | 2021-09-18 | 2023-03-24 | 大唐联仪科技有限公司 | Uplink signal subframe synchronization method, device, apparatus and storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6751252B1 (en) * | 1998-07-20 | 2004-06-15 | Samsung Electronics Co., Ltd. | Quasi-orthogonal code mask generating device in mobile communication system |
| CN101577563B (en) * | 2008-05-07 | 2012-11-14 | 电信科学技术研究院 | Method, device and base station for transmitting PMCH in special subframe |
-
2010
- 2010-01-08 CN CN201010003861.7A patent/CN102123022B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096479B (en) * | 2011-11-03 | 2016-05-25 | 中国移动通信集团公司 | A kind of sending method of uplink demodulation reference signal and equipment |
| CN103096479A (en) * | 2011-11-03 | 2013-05-08 | 中国移动通信集团公司 | Sending method and equipment of up link demodulation reference signals |
| CN103248469A (en) * | 2012-02-03 | 2013-08-14 | 中兴通讯股份有限公司 | Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station |
| CN103248469B (en) * | 2012-02-03 | 2018-05-11 | 中兴通讯股份有限公司 | Transmission, detection method, system and the base station of a kind of control signaling and demodulation pilot tone |
| WO2017028364A1 (en) * | 2015-08-19 | 2017-02-23 | 华为技术有限公司 | Reference signal assignment method and equipment |
| CN107925991A (en) * | 2015-08-19 | 2018-04-17 | 华为技术有限公司 | A kind of reference signal configuration method and apparatus |
| CN107925991B (en) * | 2015-08-19 | 2020-10-16 | 华为技术有限公司 | Reference signal configuration method and equipment |
| CN107113272B (en) * | 2015-09-25 | 2019-11-26 | 华为技术有限公司 | A kind of method for mapping resource and device |
| CN107113272A (en) * | 2015-09-25 | 2017-08-29 | 华为技术有限公司 | A kind of method for mapping resource and device |
| CN107181579A (en) * | 2016-03-11 | 2017-09-19 | 北京信威通信技术股份有限公司 | A kind of descending DMRS resource multiplexing methods |
| CN107623563A (en) * | 2016-07-11 | 2018-01-23 | 北京信威通信技术股份有限公司 | A kind of method and device of configuration DMRS in V2X communications |
| CN108347320A (en) * | 2017-01-24 | 2018-07-31 | 中兴通讯股份有限公司 | A kind of processing method and processing device of transmission power condition conversion time |
| CN108347320B (en) * | 2017-01-24 | 2022-05-10 | 中兴通讯股份有限公司 | Method and device for processing transmission power state conversion time |
| CN115842704A (en) * | 2021-09-18 | 2023-03-24 | 大唐联仪科技有限公司 | Uplink signal subframe synchronization method, device, apparatus and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102123022B (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102158319B (en) | A kind of method for precoding based on hybrid multiplex demodulation reference mark and device | |
| CN102271109B (en) | A kind of mapping method of demodulation reference mark and system | |
| CN102860070B (en) | For bundling the system and method for Resource Block in a wireless communication system | |
| EP3174220B1 (en) | A method and transmitter node for transmitting dm-rs pattern | |
| CN102148659B (en) | The transmit power collocation method and device of demodulated reference signal | |
| EP2838237B1 (en) | Method and devices for allocating reference signals in mimo system | |
| EP2409467B1 (en) | Devices for mapping pilot signals in multi-stream transmissions | |
| CN102123022B (en) | Method and device for mapping demodulation reference signals (DMRS) | |
| CN102823208B (en) | For the method and apparatus of channel estimating in mimo system and detection | |
| CN102437986B (en) | Reference signal mapping method and device | |
| CN107645329B (en) | Data transmission method and device | |
| US20100195748A1 (en) | Method and system for reference signal pattern design in resource blocks | |
| CN102123013B (en) | Method and device for mapping demodulation reference signals (DMRS) | |
| CN102656914A (en) | Method and system of multi-layer beamforming | |
| CN103944665A (en) | Uplink DMRS transmitting method, device and system/ Transmitting method, device and system used for uplink DMRS | |
| CN103763079B (en) | Wireless communication system with multiple transmission antennas using pilot subcarrier allocation | |
| WO2013189410A2 (en) | Pilot symbol bearing and processing method and device | |
| CN101540751A (en) | Demodulating method for multi-stream data and system thereof | |
| WO2018141195A1 (en) | Indication method and device | |
| CN102714866A (en) | A method and transmitter node for transmitting DM-RS pattern | |
| CN102377719B (en) | data symbol orthogonal processing method and device | |
| CN102036402B (en) | Layer mapping method and network equipment based on demodulating pilot frequency | |
| WO2011124097A1 (en) | Method and base station for mapping channel measurement pilot | |
| CN105337718A (en) | Method and device for channel estimation and detection in MIMO (multi-input multi-output) system | |
| CN102781098B (en) | Parameter indicating means, device and parameter determination method, device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |