CN101541063A - Transmission method and device of downlink control signaling - Google Patents
Transmission method and device of downlink control signaling Download PDFInfo
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Abstract
本发明公开了一种下行控制信令的传输方法，包括：基站配置基于新增两天线端口M和N传输的下行传输模式，并配置下行传输模式与下行控制消息格式(DCI format)的对应关系；根据配置的对应关系，向用户设备(UE)发送下行控制信令。本发明还公开了一种下行控制信令的传输装置，通过对现有的7种下行传输模式进行增加或者修改，并确定相应的DCI format和下行传输模式的对应关系，以保证物理下行控制信道(PDCCH)的检测性能和后向兼容性。
The invention discloses a downlink control signaling transmission method, comprising: base station configuring a downlink transmission mode based on the transmission of two newly added antenna ports M and N, and configuring the corresponding relationship between the downlink transmission mode and the downlink control message format (DCI format) ; Send downlink control signaling to the user equipment (UE) according to the configured corresponding relationship. The present invention also discloses a transmission device for downlink control signaling, by adding or modifying the existing seven downlink transmission modes, and determining the corresponding relationship between the corresponding DCI format and the downlink transmission mode, so as to ensure the physical downlink control channel (PDCCH) detection performance and backward compatibility.
Description
Technical field
The present invention relates to the signaling transmission technology in the 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 the 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, and the time slot (slot) of numbering 0～19 is formed, and it is subframe (subframe) i of 1ms that time slot 2i and 2i+1 form length.The frame structure of tdd mode, as shown in Figure 2, the radio frames of a 10ms is longly formed for the field of 5ms (half frame) by two, and a field comprises that 5 length are the subframe of 1ms, and subframe i is defined as 2 and longly is 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), the symbol that it is 66.7 microseconds (us) that time slot comprises 7 length, 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 its version number that increases the version correspondence is R9 (Release 9).Following three kinds of downlink physical control channels have been defined among the LTE: physical down control format indicating channel (PCFICH, Physical Control Format Indicator Channel), the automatic repeat requests indicating channel of physical mixed (PHICH, Physical Hybrid Automatic Retransmission RequestIndicator Channel) and Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel).
Wherein, the PCFICH loaded information is used in reference to the OFDM (OFDM that is shown in transmission PDCCH in the subframe, Orthogonal Frequency Division Multiplexing) number of symbol, on first OFDM symbol of subframe, send, (ID Identity) determines the place frequency location by system descending bandwidth and cell ID.
PHICH is used to carry acknowledgement/non-acknowledgement (ACK/NACK) feedback information of uplink transmission data.The number of PHICH, the time-frequency position can be determined by system message in the Physical Broadcast Channel (PBCH, Physical Broadcast Channel) of the descending carrier at PHICH place and sub-district ID.
PDCCH is used 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); DCI format 1, DCI format 1A, DCIformat 1B, DCI format 1C, DCI format 1D are used for the different mode of a PDSCH code word scheduling; DCI format 2, DCI format 2A are used for the different mode of space division multiplexing; DCI format 3, DCIformat 3A are used 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 promptly takies 1 CCE can be from any CCE position; The PDCCH that takies 2 CCE is 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) definition search volume (Search space) comprises the search volume of public (common) and the search volume of subscriber equipment (UE, User Equipment) proprietary (UE-Specific).OFDM symbolic number that the controlled area that the CCE number of whole search volume is indicated by PCFICH in each descending sub frame is shared and the group number of PHICH are determined.UE DCI format by transmission mode of living in the search volume carries out blind Detecting to all possible PDCCH code checks.
UE is set to based on following a kind of transmission mode (transmission mode) by high-level signaling semi-static (semi-statically), receives the 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-antennaport; 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-antennaport; 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, then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of definition in the following table 1:
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, and then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of definition in the following table 2:
Table 2
The PDCCH that UE should detect one group of candidate in each non-discontinuous reception (non-DRX, non-Discontinuous Reception) subframe to be to obtain control information, detects to be meant according to all DCIformat to be detected PDCCH in organizing is decoded.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,, belong to a kind of order and be 1 non-code book spatial multiplexing mode, also belong to a kind of single current Beaforming The Application of Technology based on the transmission of single antenna port 5; 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, just adopted the transmission of two antenna ports of double-current Beaforming technology.For this reason, need increase or revise existing 7 kinds of downlink transfer patterns, and the corresponding relation of definite corresponding D CI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.Yet, the solution at the problems referred to above also can't be provided in the prior art, 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, after guaranteeing that LTE adopts the transmission means of two antenna ports, and detection performance and the backwards compatibility of PDCCH.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of transmission method of descending control signaling, this method comprises:
Base station configuration is based on the downlink transfer pattern of two new additional antenna ports M and N transmission, and disposes the corresponding relation of described downlink transfer pattern and descending control messages form DCI format;
Described base station sends descending control signaling according to the described corresponding relation of configuration to user equipment (UE).
After UE sends descending control signaling, this method also comprises: described UE determines corresponding downlink transfer pattern according to the DCI format of described descending control signaling, and carries out Data Receiving according to described downlink transfer pattern.
Described downlink transfer pattern based on two new additional antenna ports M and N transmission is the modification to pattern among the 8th version R8; Or the downlink transfer pattern that on the basis of R8, increases newly.
The corresponding relation of described configurating downlink transmission mode and DCI format specifically comprises:
If comprise three kinds of transmission meanss in the described downlink transfer pattern: single antenna port transmission, the transmission of two antenna ports and transmission diversity,
Then dispose DCI format 1A corresponding to transmission diversity, DCI format 1 is corresponding to the single antenna port transmission, and DCI format X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Perhaps, configuration DCI format X transmits corresponding to two antenna ports, and 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;
Perhaps, configuration DCI format 1A or DCI format 1 are corresponding to transmission diversity, and DCI formatX is corresponding to transmission of two antenna ports and single antenna port transmission, and the preferred value of X is 2B or 2A; Transmission of two antenna ports 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 the described downlink transfer pattern: single antenna port transmission and the transmission of two antenna ports,
Then dispose DCI format 1 or DCI format 1A corresponding to the single antenna port transmission, DCIformat X transmits corresponding to two antenna ports, and the preferred value of X is 2B or 2A;
Perhaps, configuration DCI format Y is corresponding to the single antenna port transmission, and 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 the described downlink transfer pattern: the single antenna port transmission of having only 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, then define DCI format 1 or DCI format 1A transmission corresponding to 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 the described downlink transfer pattern: the diversity transmission, and multi-user's multiple-input and multiple-output MU-MIMO of newly-increased antenna logic port M or N transmission, then dispose DCI format 1 or DCI format 1A transmits corresponding to diversity, 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 the described downlink transfer pattern: the diversity transmission, and two antenna port transmission, then dispose 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, perhaps 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 is used to dispose the downlink transfer pattern based on two new additional antenna ports M and N transmission, and disposes the corresponding relation of described downlink transfer pattern and DCI format;
Signaling sending module is used for the described corresponding relation according to configuration, sends descending control signaling to UE.
Described downlink transfer pattern based on two new additional antenna ports M and N transmission is the modification to pattern among the 8th version R8; Or the downlink transfer pattern that on the basis of R8, increases newly; Described M and N are antenna logic port 6 and antenna logic port 7, perhaps 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, by the downlink transfer pattern of 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, send descending control signaling to UE according to configured corresponding relation.The present invention is by increasing existing 7 kinds of downlink transfer patterns or revise, and the corresponding relation of definite corresponding D CI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.
Description of drawings
Fig. 1 is the frame structure schematic diagram of fdd mode in the prior art;
Fig. 2 is the frame structure schematic diagram of tdd mode in the 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
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
The transmission method of a kind of descending control signaling provided by the present invention as shown in Figure 3, mainly may further comprise the steps:
The present invention is directed to R8 and adopt different downlink transfer pattern configurations respectively, promptly use existing downlink transfer pattern configurations, use new downlink transfer pattern configurations for R9 user for R8 user with R9.Preferable, can in R9, keep the configuration that pattern 1 arrives pattern 6 among the R8, and reconfiguration mode 7; Also can in R9, keep the configuration of pattern among the R8 1, and increase new pattern 8 and/or pattern 9 to mode 7.And at the transmission mode of two antenna ports that propose among the 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, perhaps is 5 and 6.
As embodiments of the invention one, can be arranged on and comprise three kinds of transmission meanss in the new downlink transfer pattern: single antenna port transmission, the transmission of two antenna ports and transmission diversity.So-called transmission diversity promptly is meant when PBCH uses the 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 the single antenna port transmission, and described single antenna port transmission is for having only 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 the 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 or the like.
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;
Perhaps dispose DCI format 1A or DCI format 1 corresponding to transmission diversity, DCI format X is corresponding to transmission of two antenna ports and single antenna port transmission, and wherein, the preferred value of X is 2B or 2A.
Concrete, if in R9, keep the configuration that pattern 1 arrives pattern 6 among the R8, reconfiguration mode 7, when the single antenna port transmission was only represented the transmission of antenna logic port 5, the configuration of corresponding relation was as shown in table 5 so:
Table 5
When the single antenna port transmission was represented the transmission of antenna logic port 5 or antenna logic port 6 or antenna logic port 7, the configuration of corresponding relation was as shown in table 6:
Table 6
Table 7
When the single antenna port transmission was represented the transmission of antenna logic port 5 or antenna logic port 6 or antenna logic port 7, the configuration of corresponding relation was as shown in table 8:
Table 8
Accordingly, if the X value is 2B, as above shown in the table 4, DCI format 1E corresponding in his-and-hers watches 5 and the table 7 is defined as follows shown in the table 9 to the definition of DCI format 2B:
Table 9
DCI format 1E corresponding in his-and-hers watches 6 and the table 8 is defined as follows shown in the table 10:
Table 10
Transmission diversity and single antenna port transmission can be distinguished by the signaling of DCI format Y, are specially:
When the single antenna port transmission represents to have only 5 transmission of antenna logic port, 1 bit signalling distinguishing identifier transmission diversity and single antenna port transmission by DCI format Y, for example: be designated transmission diversity with " 0 ", " 1 " is designated the single antenna port transmission, and is as shown in table 11:
| Transmission scheme | Transmission scheme | |
| 0 | If the number of PBCH antenna port is 1, use Single-antenna port, |
|
| 1 | single-antenna port：only port 5 |
Table 11
Perhaps, be designated the single antenna port transmission with " 0 ", " 1 " is designated transmission diversity;
When the single antenna port transmission is represented 5 transmission of antenna logic port, perhaps antenna logic port 6 transmission, when perhaps antenna logic port 7 transmits, by the 2 bit signalling distinguishing identifier transmission diversities of DCI format Y and the single antenna port of transmission, for example: be designated transmission diversity with " 00 ", " 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, and are as shown in table 12:
| Transmission scheme indicator | Transmission scheme |
| 00 | If the number of PBCH antenna port is 1, use Single-antenna port, |
| 01 | single-antenna port：only port 5 |
| 10 | MU-MIMO：port 6 |
| 11 | MU-MIMO：port 7 |
Table 12
Wherein, the concrete definition of Single-user/Multi-user flag is as shown in table 13 among the DCI format 1E:
| Bit field mapped to | Indicator | |
| 0 | Single- |
|
| 1 | Multi-user |
Table 13
The concrete definition of Downlink power offset field is as shown in table 14 among the DCI format 1E:
| Downlink power offset field | δ power-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 transmission of two antenna ports and single antenna port transmission, and wherein, the preferred value of X is 2B or 2A.Accordingly, if the 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, preferable 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 the single antenna port transmission represents to have only 5 transmission of antenna logic port, 1 bit signalling by DCI format X identifies single antenna port transmission and the transmission of two antenna ports respectively, for example: be designated the single antenna port transmission with " 0 ", be designated the transmission of two antenna ports with " 1 ", perhaps adopt opposite sign.
As embodiments of the invention two, can be arranged on and only comprise two kinds of transmission meanss in the new downlink transfer pattern: single antenna port transmission and the transmission of two antenna ports.Concrete configuration mode to new downlink transfer pattern is as follows:
A kind of configuration mode is: DCI format 1 or DCI format 1A are corresponding to the single antenna port transmission, and DCI format X is corresponding to single user's multiple-input and multiple-output (SU-MIMO) transmission of two antenna ports, and wherein, the preferred value of X is 2B or 2A.
Wherein, the single antenna port transmission is only represented the transmission of single antenna port 5;
Concrete, if the configuration of corresponding relation is carried out in mode 7, so in actual applications, preferable 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, preferable can adopt configuration mode as shown in table 18 below:
Table 18
Another kind of configuration mode is: DCI format Y is corresponding to the 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 the single antenna port transmission is represented 5 transmission of antenna logic port, perhaps antenna logic port 6 transmission, when perhaps antenna logic port 7 transmits, carry out the antenna logic port of distinguishing identifier transmission by 2 bit signallings of DCI format Y, 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, preferable 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, preferable can adopt configuration mode as shown in table 21 below:
Table 21
As embodiments of the invention three, can be arranged on and only comprise two kinds of transmission meanss in the new downlink transfer pattern: have only 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 the 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, preferable 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, preferable can adopt configuration mode as shown in table 23 below:
Table 23
As embodiments of the invention four, can be arranged on and only comprise two kinds of transmission modes in the new downlink transfer pattern: 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 disposed by C-RNTI, configuration DCIformat 1 or DCI format 1A transmit corresponding to diversity, 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 were disposed by SPS-RNTI, configuration DCI format 1 or DCIformat 1A were 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, preferable 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, preferable can adopt configuration mode as shown in table 25 below:
Table 25
As embodiments of the invention five, can be arranged on and only comprise two kinds of transmission modes in the new downlink transfer pattern: 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 disposed by C-RNTI, configuration DCIformat 1 or DCI format 1A transmit corresponding to diversity, 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 were disposed by SPS-RNTI, configuration DCI format 1 or DCIformat 1A were 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, preferable 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, preferable can adopt configuration mode as shown in table 27 below:
Table 27
After UE sent descending control signaling, UE promptly can determine corresponding downlink transfer pattern according to the DCIformat of descending control signaling, and carries out Data Receiving according to the downlink transfer pattern in the base station.
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 the base station, and as shown in Figure 4, this device comprises: configuration module 10 and signaling sending module 20.Wherein, configuration module 10 is used to dispose 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.Based on the downlink transfer pattern of two new additional antenna ports transmission, be modification to pattern among the 8th version R8; Or the downlink transfer pattern that on the basis of R8, increases newly; M and N are antenna logic port 6 and antenna logic port 7, perhaps are antenna logic port 5 and antenna logic port 6.Signaling sending module 20 is used for according to configured corresponding relation, sends descending control signaling to UE.
In sum, the present invention is by increasing existing 7 kinds of downlink transfer patterns or revise, and the corresponding relation of definite corresponding D CI format and downlink transfer pattern, to guarantee detection performance and the backwards compatibility of PDCCH.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
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