CN101541063B - Transmission method and device of downlink control signaling - Google Patents
Transmission method and device of downlink control signalingDownload PDFInfo
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Abstract
Description
Technical field
The present invention relates to the signalling technology in radio communication, relate in particular to a kind of transmission method and device of descending control signaling.
Background technology
Long Term Evolution (LTE, Long Term Evolution) radio frames (radio frame) in system comprises Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) frame structure of pattern and time division duplex (TDD, TimeDivision Duplex) pattern.The frame structure of fdd mode, as shown in Figure 1, the radio frames of 10 milliseconds (ms) is 0.5ms by 20 length, numbers 0～19 time slot (slot) composition, time slot 2i and 2i+1 form subframe (subframe) i that length is 1ms.The frame structure of tdd mode, as shown in Figure 2, long for the field of 5ms (half frame) forms, a field comprises the subframe that 5 length are 1ms to the radio frames of a 10ms by two, subframe i be defined as 2 long be time slot 2i and the 2i+1 of 0.5ms.In above-mentioned two kinds of frame structures, for standard cyclic prefix (Normal CP, Normal Cyclic Prefix), a time slot comprises the symbol that 7 length are 66.7 microseconds (us), wherein the CP length of first symbol is 5.21us, and the length of all the other 6 symbols is 4.69us; For extended cyclic prefix (Extended CP, Extended Cyclic Prefix), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.
The version number of LTE is corresponding to R8 (Release 8), and it increases version number corresponding to version is R9 (Release 9).Following three kinds of downlink physical control channels in LTE, have been defined: physical down control format indicating channel (PCFICH, Physical Control Format Indicator Channel), physical hybrid automatic repeat request indicator channel (PHICH, Physical Hybrid Automatic Retransmission RequestIndicator Channel) and Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel).
Wherein, the information of PCFICH carrying is used to indicate the OFDM (OFDM that transmits PDCCH in a subframe, Orthogonal Frequency Division Multiplexing) number of symbol, on first OFDM symbol of subframe, send, place frequency location is determined by system descending bandwidth and cell ID (ID, Identity).
PHICH is for carrying acknowledgement/non-acknowledgement (ACK/NACK) feedback information of uplink transmission data.The number of PHICH, time-frequency position can be determined by the system message in the Physical Broadcast Channel (PBCH, Physical Broadcast Channel) of the descending carrier at PHICH place and community ID.
PDCCH, for bearing downlink control information (DCI, Downlink Control Information), comprising: uplink and downlink schedule information, and uplink power control information.The form of DCI (DCI format) is divided into following several: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3 and DCI format 3A etc.; Wherein, DCI format 0 is used to indicate the scheduling of Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel); The different mode that DCI format 1, DCI format 1A, DCIformat 1B, DCI format 1C, DCI format 1D dispatch for a PDSCH code word; DCI format 2, DCI format 2A are for the different mode of space division multiplexing; DCI format 3, DCIformat 3A are for the different mode of the power control instruction of Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) and PUSCH.
The physical resource of PDCCH transmission is with control channel element (CCE, Control Channel Element) be unit, the size of a CCE is 9 resource element group (REG, Resource Element Group), i.e. 36 resource elements (Resource Element), a PDCCH may take 1,2,4 or 8 CCE.These four kinds of PDCCH sizes for taking 1,2,4,8 CCE, adopt tree-shaped polymerization (Aggregration), and the PDCCH that takies 1 CCE can be from any CCE position; Take the PDCCH of 2 CCE from even number CCE position; The CCE position of the integral multiple of the PDCCH that takies 4 CCE since 4; The CCE position of the integral multiple of the PDCCH that takies 8 CCE since 8.
Each polymerization rank (Aggregration level) defines a search volume (Search space), comprise the search volume of public (common) and the search volume of subscriber equipment (UE, User Equipment) proprietary (UE-Specific).The OFDM symbolic number that the CCE number of the whole search volume controlled area that PCFICH indicates in each descending sub frame is shared and the group number of PHICH are determined.UE carries out blind Detecting by the DCI format of transmission mode of living in to all possible PDCCH code checks in search volume.
UE, by a kind of transmission mode (transmission mode) based on following that is set to of high-level signaling semi-static (semi-statically), receives PDSCH transfer of data according to the indication of the PDCCH of the search volume of UE-Specific:
Pattern 1: single antenna port; Port 0 (Single-antenna port; Port 0)
Pattern 2: transmit diversity (Transmit diversity)
Mode 3: Open-Loop Spatial Multiplexing (Open-loop spatial multiplexing)
Pattern 4: Closed-Loop Spatial Multiplexing (Closed-loop spatial multiplexing)
Pattern 5: multi-user's multiple-input and multiple-output (Multi-user MIMO)
Pattern 6: closed loop Rank=1 precoding (Closed-loop Rank=1 precoding)
Mode 7: single antenna port; Port 5 (Single-antenna port; Port 5)
If UE is set to Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI by high level, Cell RadioNetwork Temporary Identifier) cyclic redundancy check (CRC) (CRC of scrambling, Cyclical RedundancyCheck) carry out PDCCH decoding, UE should according in following table 1 definition respective sets incompatible decoding PDCCH and all relevant PDSCH:
Table 1
If UE is set to semi-persistent scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (SRS C-RNTI by high level, Semi-persistently Scheduled Cell Radio Network Temporary Identifier) CRC of scrambling carries out PDCCH decoding, UE should according in following table 2 definition respective sets incompatible decoding PDCCH and all relevant PDSCH:
Table 2
UE should be at each non-discontinuous reception (non-DRX, non-Discontinuous Reception) PDCCH that subframe detects one group of candidate is to obtain control information, and detection refers to according to all DCIformat to be detected decodes to the PDCCH in group.It is respectively that 4 and 8 public search volume and Aggregration level are respectively the search volumes of 1,2,4,8 UE-Specific that UE should detect an Aggregration level.Public search volume and the search volume of UE-Specific may be overlapping.The search volume of Aggregrationlevel definition is as shown in table 3 below, and the DCI format that UE should detect depends on the transmission mode of above-mentioned setting:
Table 3
Wherein, the transmission based on single antenna port 5, belongs to a kind of order and is 1 non-code book spatial multiplexing mode, also belongs to a kind of application of single current Beaforming technology; And at present in order to strengthen the performance of descending non-code book transmission means, in the enhancing version R9 of LTE, a kind of new transmission means has been proposed, belong to a kind of order and be 2 non-code book spatial multiplexing mode, namely adopted the transmission of two antenna ports of double-current Beaforming technology.For this reason, need to existing 7 kinds of downlink transfer patterns be increased or be revised, and determine the corresponding relation of corresponding DCI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.Yet, in prior art, also cannot provide the solution for the problems referred to above, thereby make troubles to practical application.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of transmission method and device of descending control signaling, to guarantee that LTE adopts after the transmission means of two antenna ports, detection performance and the backwards compatibility of PDCCH.
For achieving the above object, technical scheme of the present invention is achieved in that
The transmission method that the invention provides a kind of descending control signaling, the method comprises:
Base station configures the downlink transfer pattern based on two new additional antenna ports M and N transmission, and configures the corresponding relation of described downlink transfer pattern and descending control message form DCI format;
Described base station, according to the described corresponding relation of configuration, sends descending control signaling to user equipment (UE).
After UE sends descending control signaling, the method also comprises: described UE determines corresponding downlink transfer pattern according to the DCI format of described descending control signaling, and carries out data receiver according to described downlink transfer pattern.
The described downlink transfer pattern based on two new additional antenna ports M and N transmission is the modification to pattern in the 8th version R8; Or on the basis of R8 newly-increased downlink transfer pattern.
The corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise three kinds of transmission meanss in described downlink transfer pattern: single antenna port transmission, two antenna port transmission and transmission diversities,
Configure DCI format 1A corresponding to transmission diversity, DCI format 1 is corresponding to single antenna port transmission, and DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Or configuration DCI format X transmits corresponding to two antenna ports, DCI format Y is corresponding to transmission diversity and single antenna port transmission, and the preferred value of X is 2B or 2A, and the preferred value of Y is 1E; Transmission diversity and single antenna port transmission are distinguished by the signaling of DCI format Y;
Or configuration DCI format 1A or DCI format 1 are corresponding to transmission diversity, DCI formatX is corresponding to two antenna port transmission and single antenna port transmission, and the preferred value of X is 2B or 2A; Two antenna port transmission and single antenna port transmission are distinguished by the signaling of DCI format X.
The corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: single antenna port transmission and the transmission of two antenna ports,
Configure DCI format 1 or DCI format 1A corresponding to single antenna port transmission, DCIformat X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Or configuration DCI format Y is corresponding to single antenna port transmission, DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A, and the preferred value of Y is 1E.
The corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: the single antenna port transmission of only having antenna logic port 5, and multi-user's multiple-input and multiple-output MU-MIMO of newly-increased antenna logic port M or N transmission, define DCI format 1 or DCI format 1A corresponding to the transmission of antenna logic port 5, DCI format X is corresponding to multi-user's multiple-input and multiple-output MU-MIMO transmission of newly-increased antenna logic port M or N, and the preferred value of X is 1E.
The corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: diversity transmission, and multi-user's multiple-input and multiple-output MU-MIMO of newly-increased antenna logic port M or N transmission, configure DCI format 1 or DCI format 1A corresponding to diversity transmission, DCI format X is corresponding to the transmission of newly-increased antenna logic port M or N, and the preferred value of X is 1E.
The corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: diversity transmission, and two antenna port transmission, configure DCI format 1 or DCI format 1A corresponding to transmission diversity, DCI format X is corresponding to the transmission of newly-increased antenna logic port M and N, and the preferred value of X is 2B or 2A.
Described antenna ports M and N are antenna logic port 6 and antenna logic port 7, or are antenna logic port 5 and antenna logic port 6; Described newly-increased downlink transfer pattern is pattern 8 and/or pattern 9.
The present invention also provides a kind of transmitting device of descending control signaling, comprising:
Configuration module, for configuring the downlink transfer pattern based on two new additional antenna ports M and N transmission, and configures the corresponding relation of described downlink transfer pattern and DCI format;
Signaling sending module, for according to the described corresponding relation of configuration, sends descending control signaling to UE.
The described downlink transfer pattern based on two new additional antenna ports M and N transmission is the modification to pattern in the 8th version R8; Or on the basis of R8 newly-increased downlink transfer pattern; Described M and N are antenna logic port 6 and antenna logic port 7, or are antenna logic port 5 and antenna logic port 6.
The transmission method of a kind of descending control signaling provided by the present invention and device, the downlink transfer pattern by configuration based on two new additional antenna ports M and N transmission, and the corresponding relation of configurating downlink transmission mode and DCI format; And according to the corresponding relation of configuration, to UE, send descending control signaling.The present invention is by existing 7 kinds of downlink transfer patterns are increased or revised, and the corresponding relation of definite corresponding DCI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of fdd mode in prior art;
Fig. 2 is the frame structure schematic diagram of tdd mode in prior art;
Fig. 3 is the flow chart of the transmission method of a kind of descending control signaling of the present invention;
Fig. 4 is the composition structural representation of the transmitting device of a kind of descending control signaling of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
The transmission method of a kind of descending control signaling provided by the present invention, as shown in Figure 3, mainly comprises the following steps:
The present invention is directed to R8 and R9 and adopt respectively different downlink transfer pattern configurations, for R8 user, use existing downlink transfer pattern configurations, for R9 user, use new downlink transfer pattern configurations.Preferably, can in R9, retain the configuration that in R8, pattern 1 arrives pattern 6, and reconfiguration mode 7; Also can in R9, retain pattern 1 in R8 and arrive the configuration of mode 7, and increase new pattern 8 and/or pattern 9.And for the transmission mode of two antenna ports that propose in R9, it is port M and port N that the present invention defines two newly-increased antenna logic ports, and the preferred value of M and N is 6 and 7, or is 5 and 6.
As embodiments of the invention one, can be arranged on and in new downlink transfer pattern, comprise three kinds of transmission meanss: single antenna port transmission, two antenna ports transmission and transmission diversities.So-called transmission diversity, refers to when PBCH is used single antenna port transmission, and transmission means is 0 transmission of single antenna port; Otherwise, be transmission diversity.Concrete configuration mode to new downlink transfer pattern is as follows:
A kind of configuration mode is: DCI format 1A is corresponding to transmission diversity; DCI format 1 is corresponding to single antenna port transmission, and described single antenna port transmission is for only having 5 transmission of antenna logic port; DCI formatX transmits corresponding to two antenna ports, and wherein, the preferred value of X is 2B or 2A.Accordingly, if X value is 2B, as shown in table 4 to the definition of DCI format 2B:
Table 4
Certainly, according to the needs of practical application, X also can be chosen as other values, for example: 2C, 2D etc.
Another kind of configuration mode is: DCI format X transmits corresponding to two antenna ports, and DCI format Y is corresponding to transmission diversity and single antenna port transmission, and wherein, the preferred value of X is 2B or 2A, and the preferred value of Y is 1E;
Or configuration DCI format 1A or DCI format 1 are corresponding to transmission diversity, and DCI format X is corresponding to two antenna port transmission and single antenna port transmission, and wherein, the preferred value of X is 2B or 2A.
Concrete, if retain the configuration that in R8, pattern 1 arrives pattern 6 in R9, reconfiguration mode 7, when single antenna port transmission only represents the transmission of antenna logic port 5, the configuration of corresponding relation is as shown in table 5 so:
Table 5
When single antenna port transmission represents the transmission of antenna logic port 5 or antenna logic port 6 or antenna logic port 7, the configuration of corresponding relation is as shown in table 6:
Table 6
If retain pattern 1 in R8 in R9, to the configuration of mode 7, increase new pattern 8, when single antenna port transmission only represents the transmission of antenna logic port 5, the configuration of corresponding relation is as shown in table 7 so:
Table 7
When single antenna port transmission represents the transmission of antenna logic port 5 or antenna logic port 6 or antenna logic port 7, the configuration of corresponding relation is as shown in table 8:
Table 8
Accordingly, if X value is 2B, to the definition of DCI format 2B, as above shown in table 4, DCI format 1E corresponding in his-and-hers watches 5 and table 7 is defined as follows shown in table 9:
Table 9
DCI format 1E corresponding in his-and-hers watches 6 and table 8 is defined as follows shown in table 10:
Table 10
Transmission diversity and single antenna port transmission can be distinguished by the signaling of DCI format Y, are specially:
When single antenna port transmission represents to only have 5 transmission of antenna logic port, by 1 bit signalling distinguishing identifier transmission diversity and the single antenna port transmission of DCI format Y, for example: with " 0 ", be designated transmission diversity, " 1 " is designated single antenna port transmission, as shown in table 11:
| Transmission scheme indicator | Transmission scheme |
| 0 | If the number of PBCH antenna port is 1, use Single-antenna port, port 0, otherwise Transmit diversity; |
| 1 | single-antenna port：only port 5 |
Table 11
Or, with " 0 ", be designated single antenna port transmission, " 1 " is designated transmission diversity;
When single antenna port transmission represents 5 transmission of antenna logic port, or antenna logic port 6 transmission, or during 7 transmission of antenna logic port, by the 2 bit signalling distinguishing identifier transmission diversities of DCI format Y and the single antenna port of transmission, for example: with " 00 ", be designated transmission diversity, " 01 " is designated 5 transmission of antenna logic port, and " 10 " are designated 6 transmission of antenna logic port, " 11 " are designated 7 transmission of antenna logic port, as shown in table 12:
| Transmission scheme indicator | Transmission scheme |
| 00 | If the number of PBCH antenna port is 1, use Single-antenna port, port 0, otherwise Transmit diversity; |
| 01 | single-antenna port：only port 5 |
| 10 | MU-MIMO：port 6 |
| 11 | MU-MIMO：port 7 |
Table 12
Wherein, in DCI format 1E, the specific definition of Single-user/Multi-user flag is as shown in table 13:
| Bit field mapped to index | Indicator |
| 0 | Single-user |
| 1 | Multi-user |
Table 13
In DCI format 1E, the specific definition of Downlink power offset field is as shown in table 14:
| Downlink power offset field | δpower-offset[dB] |
| 0 | -10log10(2) |
| 1 | 0 |
Table 14
Another configuration mode is: DCI format 1A or DCI format 1 are corresponding to transmission diversity; DCIformat X is corresponding to two antenna port transmission and single antenna port transmission, and wherein, the preferred value of X is 2B or 2A.Accordingly, if X value is 2B, as shown in Table 15 to the definition of DCI format 2B:
Table 15
Concrete, if the configuration of corresponding relation is carried out in mode 7, so in actual applications, preferably can adopt configuration mode as shown in table 16 below:
Table 16
Single antenna port transmission and the transmission of two antenna ports can be distinguished by the signaling of DCI format X, are specially:
When single antenna port transmission represents to only have 5 transmission of antenna logic port, 1 bit signalling by DCI format X identifies respectively single antenna port transmission and two antenna ports transmit, for example: with " 0 ", be designated single antenna port transmission, with " 1 ", be designated two antenna port transmission, or adopt contrary sign.
As embodiments of the invention two, can be arranged on and in new downlink transfer pattern, only comprise two kinds of transmission meanss: single antenna port transmission and the transmission of two antenna ports.Concrete configuration mode to new downlink transfer pattern is as follows:
Be: DCI format 1 or DCI format 1A are corresponding to a single antenna port transmission, and DCI format X is corresponding to alone family multiple-input and multiple-output (SU-MIMO) transmission of two antenna ports, and wherein, the preferred value of X is 2B or 2A.
Wherein, single antenna port transmission only represents the transmission of single antenna port 5;
Concrete, if the configuration of corresponding relation is carried out in mode 7, so in actual applications, preferably can adopt configuration mode as shown in table 17 below:
Table 17
If the configuration of corresponding relation is carried out in pattern 8, so in actual applications, preferably can adopt configuration mode as shown in table 18 below:
Table 18
Another kind of configuration mode is: DCI format Y is corresponding to single antenna port transmission, and DCI format X transmits corresponding to two antenna ports, and wherein, the preferred value of X is 2B or 2A, and the preferred value of Y is 1E.Concrete: when single antenna port transmission represents 5 transmission of antenna logic port, or antenna logic port 6 transmission, or during 7 transmission of antenna logic port, by 2 bit signallings of DCI format Y, carry out the antenna logic port of distinguishing identifier transmission, for example: with 5 transmission of " 00 " sign antenna logic port, 6 transmission of " 01 " sign antenna logic port, 7 transmission of " 10 " sign antenna logic port, shown in table 19:
| Transmission scheme indicator | Transmission scheme |
| 00 | single-antenna port：only port 5 |
| 01 | MU-MIMO：port 6 |
| 10 | MU-MIMO：port 7 |
| 11 | Reserve |
Table 19
Concrete, if the configuration of corresponding relation is carried out in mode 7, so in actual applications, preferably can adopt configuration mode as shown in table 20 below:
Table 20
If the configuration of corresponding relation is carried out in pattern 8, so in actual applications, preferably can adopt configuration mode as shown in table 21 below:
Table 21
As embodiments of the invention three, can be arranged on and in new downlink transfer pattern, only comprise two kinds of transmission meanss: only have the transmission of antenna logic port 5, and the transmission of multi-user's multiple-input and multiple-output (MU-MIMO) of newly-increased antenna logic port 6 or 7.Concrete: configuration DCI format 1 or DCI format 1A are corresponding to single antenna port transmission, and DCI format X is corresponding to the transmission of newly-increased antenna logic port 6 or 7, and wherein, the preferred value of X is 1E.
Concrete, if the configuration of corresponding relation is carried out in pattern 8, so in actual applications, preferably can also adopt configuration mode as shown in table 22 below:
Table 22
If the configuration of corresponding relation is carried out in pattern 9, so in actual applications, preferably can adopt configuration mode as shown in table 23 below:
Table 23
As embodiments of the invention four, can be arranged on and in new downlink transfer pattern, only comprise two kinds of transmission modes: diversity transmission, and the transmission (MU-MIMO) of newly-increased antenna logic port 6 or 7.
The configuration of corresponding relation comprises: when PDCCH and PDSCH are configured by C-RNTI, configuration DCIformat 1 or DCI format 1A are corresponding to diversity transmission, DCI format X is corresponding to the transmission of newly-increased antenna logic port 6 or 7, and wherein, the preferred value of X is 1E;
When PDCCH and PDSCH are configured by SPS-RNTI, configuration DCI format 1 or DCIformat 1A are corresponding to 5 transmission of single antenna port, and DCI format X is corresponding to the transmission of newly-increased antenna logic port 6 or 7, and wherein, the preferred value of X is 1E.
Concrete, if the configuration of corresponding relation is carried out in pattern 8, so in actual applications, preferably can adopt configuration mode as shown in table 24 below:
Table 24
If the configuration of corresponding relation is carried out in pattern 9, so in actual applications, preferably can adopt configuration mode as shown in table 25 below:
Table 25
As embodiments of the invention five, can be arranged on and in new downlink transfer pattern, only comprise two kinds of transmission modes: diversity transmission, and the transmission (SU-MIMO) of newly-increased two antenna logic ports 6 and 7.
The configuration of corresponding relation comprises: when PDCCH and PDSCH are configured by C-RNTI, configuration DCIformat 1 or DCI format 1A are corresponding to diversity transmission, DCI format X is corresponding to the transmission of newly-increased two antenna logic ports 6 and 7, and wherein, the preferred value of X is 2B;
When PDCCH and PDSCH are configured by SPS-RNTI, configuration DCI format 1 or DCIformat 1A are corresponding to 5 transmission of single antenna port, and DCI format X is corresponding to the transmission of newly-increased two antenna logic ports 6 and 7, and wherein, the preferred value of X is 2B.
Concrete, if the configuration of corresponding relation is carried out in pattern 8, so in actual applications, preferably can adopt configuration mode as shown in table 26 below:
Table 26
If the configuration of corresponding relation is carried out in pattern 9, so in actual applications, preferably can adopt configuration mode as shown in table 27 below:
Table 27
In base station, after UE sends descending control signaling, UE can determine corresponding downlink transfer pattern according to the DCIformat of descending control signaling, and carries out data receiver according to downlink transfer pattern.
For realizing the transmission method of above-mentioned descending control signaling, the present invention also provides a kind of transmitting device of descending control signaling, is applied in base station, and as shown in Figure 4, this device comprises:configuration module 10 and signaling sending module 20.Wherein,configuration module 10, for configuring the downlink transfer pattern based on two new additional antenna ports M and N transmission, and the corresponding relation of configurating downlink transmission mode and DCI format.Downlink transfer pattern based on two new additional antenna ports transmission is the modification to pattern in the 8th version R8; Or on the basis of R8 newly-increased downlink transfer pattern; M and N are antenna logic port 6 and antenna logic port 7, or are antenna logic port 5 and antenna logic port 6.Signaling sendingmodule 20, for according to the corresponding relation of configuration, sends descending control signaling to UE.
In sum, the present invention is by existing 7 kinds of downlink transfer patterns are increased or revised, and the corresponding relation of definite corresponding DCI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a transmission method for descending control signaling, is characterized in that, the method comprises:
Base station configures the downlink transfer pattern based on two new additional antenna ports M and N transmission, and configures the corresponding relation of described downlink transfer pattern and descending control message form DCI format;
Described base station, according to the described corresponding relation of configuration, sends descending control signaling to user equipment (UE);
Wherein, if comprise three kinds of transmission meanss in described downlink transfer pattern: single antenna port transmission, two antenna port transmission and transmission diversities, the corresponding relation of described configurating downlink transmission mode and DCI format comprises:
Configuration DCI format1A is corresponding to transmission diversity, and DCI format1 is corresponding to single antenna port transmission, and DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Or configuration DCI format X transmits corresponding to two antenna ports, DCI format Y is corresponding to transmission diversity and single antenna port transmission, and the preferred value of X is 2B or 2A, and the preferred value of Y is 1E; Transmission diversity and single antenna port transmission are distinguished by the signaling of DCI format Y;
Or configuration DCI format1A or DCI format1 are corresponding to transmission diversity, DCI format X is corresponding to two antenna port transmission and single antenna port transmission, and the preferred value of X is 2B or 2A; Two antenna port transmission and single antenna port transmission are distinguished by the signaling of DCI format X.
2. the transmission method of descending control signaling according to claim 1, it is characterized in that, after UE sends descending control signaling, the method also comprises: described UE determines corresponding downlink transfer pattern according to the DCI format of described descending control signaling, and carries out data receiver according to described downlink transfer pattern.
3. the transmission method of descending control signaling according to claim 1, is characterized in that,
The described downlink transfer pattern based on two new additional antenna ports M and N transmission is the modification to pattern in the 8th version R8; Or on the basis of R8 newly-increased downlink transfer pattern.
4. the transmission method of descending control signaling according to claim 3, is characterized in that, the corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: single antenna port transmission and the transmission of two antenna ports,
Configure DCI format1 or DCI format1A corresponding to single antenna port transmission, DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Or configuration DCI format Y is corresponding to single antenna port transmission, DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A, and the preferred value of Y is 1E.
5. the transmission method of descending control signaling according to claim 3, is characterized in that, the corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: the single antenna port transmission of only having antenna logic port 5, and multi-user's multiple-input and multiple-output MU-MIMO of newly-increased antenna logic port M or N transmission, define DCI format1 or DCI format1A corresponding to the transmission of antenna logic port 5, DCI format X is corresponding to multi-user's multiple-input and multiple-output MU-MIMO transmission of newly-increased antenna logic port M or N, and the preferred value of X is 1E.
6. the transmission method of descending control signaling according to claim 3, is characterized in that, the corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: diversity transmission, and multi-user's multiple-input and multiple-output MU-MIMO of newly-increased antenna logic port M or N transmission, configure DCI format1 or DCI format1A corresponding to diversity transmission, DCI format X is corresponding to the transmission of newly-increased antenna logic port M or N, and the preferred value of X is 1E.
7. the transmission method of descending control signaling according to claim 3, is characterized in that, the corresponding relation of described configurating downlink transmission mode and DCI format, specifically comprises:
If comprise two kinds of transmission meanss in described downlink transfer pattern: diversity transmission, and two antenna port transmission, configure DCI format1 or DCI format1A corresponding to transmission diversity, DCI format X is corresponding to the transmission of newly-increased antenna logic port M and N, and the preferred value of X is 2B or 2A.
8. according to the transmission method of descending control signaling described in any one in claim 4 to 7, it is characterized in that, described antenna ports M and N are antenna logic port 6 and antenna logic port 7, or are antenna logic port 5 and antenna logic port 6; Described newly-increased downlink transfer pattern is pattern 8 and/or pattern 9.
9. a transmitting device for descending control signaling, is characterized in that, comprising:
Configuration module, for configuring the downlink transfer pattern based on two new additional antenna ports M and N transmission, and configures the corresponding relation of described downlink transfer pattern and DCI format;
Signaling sending module, for according to the described corresponding relation of configuration, sends descending control signaling to UE;
Wherein, if comprise three kinds of transmission meanss in described downlink transfer pattern: single antenna port transmission, two antenna port transmission and transmission diversities, the corresponding relation of described configurating downlink transmission mode and DCI format comprises:
Configuration DCI format1A is corresponding to transmission diversity, and DCI format1 is corresponding to single antenna port transmission, and DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Or configuration DCI format X transmits corresponding to two antenna ports, DCI format Y is corresponding to transmission diversity and single antenna port transmission, and the preferred value of X is 2B or 2A, and the preferred value of Y is 1E; Transmission diversity and single antenna port transmission are distinguished by the signaling of DCI format Y;
Or configuration DCI format1A or DCI format1 are corresponding to transmission diversity, DCI format X is corresponding to two antenna port transmission and single antenna port transmission, and the preferred value of X is 2B or 2A; Two antenna port transmission and single antenna port transmission are distinguished by the signaling of DCI format X.
10. the transmitting device of descending control signaling according to claim 9, is characterized in that, the described downlink transfer pattern based on two new additional antenna ports M and N transmission, is the modification to pattern in the 8th version R8; Or on the basis of R8 newly-increased downlink transfer pattern; Described M and N are antenna logic port 6 and antenna logic port 7, or are antenna logic port 5 and antenna logic port 6.
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