CN101860424A - Method and base station for sending downlink control information - Google Patents
Method and base station for sending downlink control information Download PDFInfo
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- CN101860424A CN101860424A CN201010205867A CN201010205867A CN101860424A CN 101860424 A CN101860424 A CN 101860424A CN 201010205867 A CN201010205867 A CN 201010205867A CN 201010205867 A CN201010205867 A CN 201010205867A CN 101860424 A CN101860424 A CN 101860424A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0031—Multiple signaling transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
Abstract
The invention discloses a method and a base station for sending downlink control information. The method comprises the following steps: downlink control information is created comprising parameters of transmission block enabling information, layer number information and precoding matrix index (PMI) information of a transmission block (TB), wherein the parameters are used for indicating the terminal to retransmitting the transmission block (TB); and the base station sends the downlink control information to the terminal. The invention enables the UE to acquire the error conditions of the transmitted TB, that is, the UE can acquire the TB required to be retransmitted and retransmits the erroneous TB in the presence of TB transmission error.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of sending method and base station of Downlink Control Information.
Background technology
At third generation partner program (The 3rd Generation Partnership Project, abbreviate 3GPP as) Long Term Evolution (Long Term Evolution, abbreviate LTE as) in the system, the base station adopts the mode of centralized dispatching to control user terminal (User Equipment, abbreviate UE as) the transmission of Physical Uplink Shared Channel (Physical Uplink Shared Channel abbreviates PUSCH as).
The base station sends to object UE by Physical Downlink Control Channel (Physical Downlink ControlChannel abbreviates PDCCH as) with the uplink scheduling information (uplinkscheduling information) of PUSCH.Physical Downlink Control Channel bearing downlink control information (Downlink Control Information, abbreviate DCI as), comprising following/uplink scheduling information (downlink or uplink scheduling information), uplink transmission power control command etc.According to different Downlink Control Information, LTE system definition multiple descending control information format (DCI format).The uplink scheduling information of PUSCH is carried in the descending control information format 0 (DCI format 0).If UE detects the PDCCH with DCI format 0 form,, on the channel resource that is distributed, adopt indicated modulation coding mode and corresponding transmission power to send PUSCH then according to the uplink scheduling information that wherein comprises.
Wherein, comprise following information among the DCI format 0: the flag bit that is used to distinguish DCI format 0 and DCI format 1A; The frequency hopping flag bit; Resource block assignments and frequency-hopping resource distribute; Modulation coding mode (Modulation and Coding Scheme abbreviates MCS as) and redundancy versions (Redundancy Version abbreviates RV as); New data indication (Newdata indicator); The emissive power control command (TPCcommand for scheduled PUSCH) that is used for the PUSCH that dispatched; The cyclic shift of demodulated reference signal (Cyclicshift for DM RS); Up indication (UL index) exists only in time division duplex (TimeDivision Duplex abbreviates TDD as) system, and being used for uplink-downlink configuration (Uplink-downlink configuration) is 0 o'clock; Descending distribution indication (DownlinkAssignment Index abbreviates DAI as) exists only in tdd systems, and being used for uplink-downlink configuration is 1～6 o'clock; Channel quality indication request (CQI request).
In the LTE system, the PUSCH frequency division multiplexing up-link bandwidth of a plurality of UE in the sub-district, promptly the PUSCH of different UEs is quadrature on frequency domain.And the base station is designated as the radio channel resource of the PUSCH of object UE distribution in DCI format0.
In the LTE system, PUSCH adopts the single antenna port transmission.In the LTE system, the modulation coding mode of PUSCH and redundancy versions be joint instructions in DCI format 0, and wherein, the joint instructions bit is 5 bits.
Senior Long Term Evolution (LTE-Advanced abbreviates LTE-A as) system is the evolution system of future generation of LTE system.Introduced carrier aggregation technology (carrieraggregation) in this system, Fig. 1 is the schematic diagram according to the carrier aggregation of the LTE-A system of correlation technique.As shown in Figure 1, the LTE-A system adopts carrier aggregation technology expansion transmission bandwidth, and the carrier wave of each polymerization is called one " component carrier " (component carrier).A plurality of component carriers can be continuous, also can be discontinuous, can be positioned at same frequency range (frequency band), also can be positioned at different frequency range.
In the LTE-A system, PUSCH can adopt the single antenna port transmission, also can adopt many antenna port transmission.When many antenna ports transmit, LTE-A supports based on one or two code word (Codeword, abbreviate CW as) spatial reuse, the corresponding transmission block TB of each code word, corresponding modulation coding mode (5 bit) of each transmission block and new data are indicated (1 bit).
LTE-A adopts based on code book (codebook, be called code book again) linear predictive coding technology (precoding), that is, transmitting terminal utilizes channel condition information (Channel StatusInformation, abbreviate CSI as), carry out preliminary treatment (precoding) to transmitting.A kind of approach that transmitting terminal obtains CSI is the feedback by receiving terminal.In order to reduce feedback overhead, the general mode that adopts is to preserve identical code book, i.e. pre-coding matrix collection at receiving terminal with transmitting terminal.Receiving terminal is according to current channel conditions, in code book, select suitable pre-coding matrix, and with its pre-coding matrix index value (Precoding Matrix Index in code book, abbreviate PMI as) feed back to transmitting terminal, transmitting terminal finds corresponding pre-coding matrix according to the pre-coding matrix index value of feedback, carries out precoding to sending signal.In the LTE-A system, the precoding information of PUSCH (PMI) also should be indicated at the descending control information format that is used for uplink scheduling.
In the LTE-A up link, the base station is according to current channel conditions, selects suitable pre-coding matrix in code book, and with its PMI in code book together with some other uplink scheduling information, be carried in certain descending control information format, send to the UE that is dispatched through PDCCH.UE finds pre-coding matrix according to the PMI in the detected descending control information format, carries out precoding to sending signal.
At present, the code book in the LTE-A system has designed and has finished, and 3 bit pre-coding matrix indexes (PMI) indication pre-coding matrix the time is adopted in the emission of 2 antennas, and wherein the code book of 2 layers of 2 transmitting antennas is a unit matrix, does not possess any channel information.6 bit pre-coding matrix indexes (PMI) indication pre-coding matrix the time is adopted in the emission of 4 antennas, and 1 layer, the pre-coding matrix quantity of 2 layers and 3 layers is respectively 24,16,12,1, wherein, pre-coding matrix index is represented the pre-coding matrix index information of number of plies information and this layer correspondence.
When using 2 TB transmitting physical Uplink Shared Channels, it is correct a transport block transmission to occur, and the phenomenon of another transport block transmission mistake, so, UE only need transmit error of transmission last time when retransmitting transmission block get final product, still, in the correlation technique owing to the base station that only receives knows it specifically is which transport block transmission mistake, and terminal and do not know that terminal just can't retransmit the transmission block of error of transmission last time so.
Summary of the invention
Main purpose of the present invention is to provide a kind of sending method and base station of Downlink Control Information, to solve the problem that above-mentioned terminal can't retransmit the transmission block of error of transmission last time at least.
According to an aspect of the present invention, a kind of sending method of Downlink Control Information is provided, comprise: create Downlink Control Information, comprising the parameter of the transmission block enable information, number of plies information and the pre-coding matrix index PMI information that are used for the transmission block TB that indicating terminal need retransmit; The base station sends this Downlink Control Information to terminal.
According to a further aspect in the invention, a kind of base station is provided, comprise: constructing module is used to create Downlink Control Information, comprising the parameter of the transmission block enable information, number of plies information and the pre-coding matrix index PMI information that are used for the transmission block TB that indicating terminal need retransmit; Sending module is used for sending this Downlink Control Information to terminal.
By the present invention, by in sending to the Downlink Control Information of UE, comprising the transmission block enable information that is used to indicate the TB that UE need retransmit, UE can be known the TB that concrete needs retransmit according to this information, promptly be which TB or 2 TB among 2 TB all need retransmit, thereby solved the problem that the UE that exists in the correlation technique can't retransmit the TB of error of transmission last time, make UE can know the error situation of the TB of transmission, and when the TB error of transmission is arranged, carry out the re-transmission of wrong TB.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the carrier aggregation of the LTE-A system of correlation technique;
Fig. 2 is the flow chart according to the sending method of the Downlink Control Information of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the base station of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 2 is according to the flow chart of the sending method of the Downlink Control Information of the embodiment of the invention, comprising:
Step S202, create Downlink Control Information (can be the Downlink Control Information of corresponding downstream control information form), comprise the parameter (can be called indication signaling) of the transmission block enable information, number of plies information and the PMI information that are used to indicate the TB that UE need retransmit in this Downlink Control Information;
Step S204, the base station sends this Downlink Control Information to UE.
In the correlation technique owing to using 2 TB transmission, under the situation of one of them TB error of transmission and another TB error of transmission, because the base station that only receives knows it specifically is which TB error of transmission, and UE and not knowing, thereby cause UE can't the TB of error of transmission last time be retransmitted.Present embodiment is by comprising the transmission block enable information that is used to indicate the TB that UE need retransmit in sending to the Downlink Control Information of UE, UE can be known the TB that concrete needs retransmit according to this information, promptly be which TB or 2 TB among 2 TB all need retransmit, thereby solved the problem that the UE that exists in the correlation technique can't retransmit the TB of error of transmission last time, make UE can know the error situation of the TB of transmission, and when the TB error of transmission is arranged, carry out the re-transmission of wrong TB.
(1) antenna number of UE is 4 o'clock:
Preferably, when the antenna number of transmitting terminal (being UE) be that the quantity of 4,1 layers of corresponding pre-coding matrix is n
1, the quantity of 2 layers of corresponding pre-coding matrix is n
2, the quantity of 3 layers of corresponding pre-coding matrix is n
3, the quantity of 4 layers of corresponding pre-coding matrix is n
4, the TB maximum quantity that UE uses is two, then, step S202 comprises: above-mentioned transmission block enable information, the number of plies information state different with the parametric representation N kind of PMI information that is used to indicate the TB that UE need retransmit is set, N=n
2+ n
3+ n
4+ 2, be used for indication: two TB whether need to retransmit respectively (can comprise that two TB all need retransmit, two TB which need to retransmit); Which floor the indicated number of plies is in the above-mentioned number of plies information; And indicated PMI is above-mentioned two TB which pre-coding matrix index value in the above-mentioned number of plies when retransmitting simultaneously in the above-mentioned PMI information.
Wherein, any n in the N kind state
2The state of kind (is designated as
) the expression number of plies is that 2 and two TB enable (promptly two TB all need retransmit), and 2 layers of corresponding pre-coding matrix index: 1 to n
2n
3The state of kind (is designated as
) the expression number of plies is that 3 and two TB enable, and 3 layers of corresponding pre-coding matrix index: 1 to n
3n
4The state of kind (is designated as
) the expression number of plies is that 4 and two TB enable, and 4 layers of corresponding pre-coding matrix index: 1 to n
42 kinds of states (are designated as P
1, P
2) representing respectively that a TB among two TB enables (promptly a TB needs to retransmit) and the 2nd TB does not enable (perhaps a TB do not enable and the 2nd TB enables), the 2nd TB enables and a TB does not enable (perhaps the 2nd TB do not enable and a TB enables).
Above-mentioned enabling need promptly to be represented to retransmit, down together.
Preferably, above-mentioned parameter (being indication signaling) takies M bit, can represent 2 altogether
MThe state of kind, wherein, 2
MN kind state in the state of kind is above-mentioned expression, and remaining state is a reservation state.
Preferably, when a TB (or the 2nd TB) needs to retransmit (promptly enabling), pre-coding matrix index information and number of plies information that the base station uses modulation coding mode signaling corresponding with the 2nd TB (or a TB) in the above-mentioned Downlink Control Information and new data indication signaling to be used to carry a TB.Like this, can utilize modulation coding mode signaling that does not need the 2nd TB that retransmits and pre-coding matrix index information and the number of plies information that the new data indication signaling carries a TB, thus the resource of making full use of.
Preferably, the base station uses in the Downlink Control Information modulation coding mode signaling of the 2nd TB correspondence among two TB to carry the number of plies information of a TB correspondence with the new data indication signaling and the mode of PMI information is: be provided with corresponding modulation coding mode signaling and the new data indication signaling of the 2nd TB (or a TB) and represent the different state of H kind (implication that is each state representation is different), H=n jointly
1+ n
2, wherein, any n in the H kind state
1The state of kind (is designated as
) the expression number of plies is 1, and the pre-coding matrix index of 1 layer of correspondence: 1 to n
1n
2The state of kind (is designated as
) the expression number of plies is 2, and the pre-coding matrix index of 2 layers of correspondence: 1 to n
2
Preferably, modulation coding mode signaling and new data indication signaling that the 2nd TB (a perhaps TB) is corresponding take T bit altogether, can represent 2 altogether
TThe state of kind, wherein, 2
TH kind state in the state of kind is above-mentioned expression, and remaining state is a reservation state.
Preferably, when the antenna number of UE is 4, M=5 or 6, n
1Be 24, n
2Be 16, n
3Be 12, n
4The modulation coding mode signaling that is 1, one transmission block is 5 bits, and the new data indication signaling is 1 bit, and T is 6.
For example, in the process that reality is implemented, when the transmit antenna number of UE is 4 antennas, and during M=5, PMI signaling length is 6 bits, and wherein, to shown in the table 6, the mode bit 1～16 of PMI signaling is used to indicate 2 TB to enable pre-coding matrix with 2 layers of transmission as table 1; The mode bit 17～28 of PMI signaling is used for 2 TB and enables pre-coding matrix with 3 layers of transmission; The mode bit 29 of PMI signaling is used for 2 TB and enables pre-coding matrix with 4 layers of transmission; Mode bit 30 expressions the one TB of PMI signaling enables and the 2nd TB does not enable; Mode bit 31 expressions the 2nd TB of PMI signaling enables and a TB does not enable.Modulation coding mode signaling and the new data indication signaling of the TB that does not enable are represented pre-coding matrix index.
Parameter (indication signaling) corresponding relation during table 1 four antennas
Parameter (indication signaling) corresponding relation during table 2 four antennas
Parameter (indication signaling) corresponding relation during table 3 four antennas
Parameter (indication signaling) corresponding relation during table 4 four antennas
Parameter (indication signaling) corresponding relation during table 5 four antennas
Parameter (indication signaling) corresponding relation during table 6 four antennas
And for example: when the transmit antenna number of UE is 4 antennas, and during M=6, PMI signaling length is 5 bits, and wherein the mode bit 1～24 of PMI signaling is used to indicate 2 TB to enable pre-coding matrix with 1 layer of transmission; The mode bit 25～40 of PMI signaling is used for 2 TB and enables to enable pre-coding matrix with 2 layers of transmission with the pre-coding matrix of 2 layers of transmission or 1 TB; The mode bit 29 of PMI signaling is used to represent that 2 TB enable the pre-coding matrix with 4 layers of transmission; The mode bit 30 of PMI signaling is used to represent that a TB enables and the 2nd TB does not enable; The mode bit 31 of PMI signaling is used to represent that the 2nd TB enables and a TB does not enable.
(2) antenna number of UE is 2 o'clock:
Preferably, the antenna number of supposing UE is that the quantity of the pre-coding matrix of 2,1 layers of correspondence is n
1, the quantity of the pre-coding matrix of 2 layers of correspondence is n
2, the maximum quantity of TB is two; Then step S202 comprises: above-mentioned transmission block enable information, the number of plies information state (implication that be each state representation different) different with the parametric representation N kind of PMI information that is used to indicate the TB that UE need retransmit is set, N=n
2+ 2, be used for indication: whether two TB need to retransmit respectively (the transmission block enable information that is above-mentioned parameter); Which floor the indicated number of plies of number of plies information in this parameter is; The indicated PMI of PMI information in this parameter is above-mentioned two TB which pre-coding matrix index value in the above-mentioned number of plies when retransmitting simultaneously.
Wherein, any n in the state that above-mentioned N kind is different
2The state of kind (is designated as
P
1, P
2) be used to represent that the number of plies is that 2 and two TB all enable, and the pre-coding matrix index of 2 layers of correspondence: 1 to n
2Any 2 kinds of states (are designated as P
1, P
2) being respectively applied for that expression the one TB enables and the 2nd TB does not enable (perhaps a TB do not enable and the 2nd TB enables), the 2nd TB enables and a TB does not enable (perhaps the 2nd TB do not enable and a TB enables).
Preferably, above-mentioned parameter (being indication signaling) takies M bit, can represent 2 altogether
MThe state of kind, wherein, 2
MN kind state in the state of kind is above-mentioned expression, and remaining state is a reservation state.
Preferably, when the TB of needs re-transmission was a TB (perhaps the 2nd TB), the base station used modulation coding mode signaling corresponding with the 2nd TB (a perhaps TB) in the above-mentioned Downlink Control Information and new data indication signaling to carry corresponding number of plies information and the PMI information of a TB (perhaps the 2nd TB).Like this, can make full use of resource.
Preferably, the base station uses in the Downlink Control Information modulation coding mode signaling of the 2nd TB correspondence among two TB and number of plies information that the new data indication signaling carries a TB correspondence and the mode of PMI information to be:
The corresponding modulation coding mode signaling of the 2nd TB (a perhaps TB) is set represents the different state of H kind (implication of each state representation is different), H=n jointly with the new data indication signaling
1, wherein, any n in the H kind state
1The state of kind (is designated as
) the expression number of plies is 1, and the pre-coding matrix index of 1 layer of correspondence: 1 to n
1
Preferably, modulation coding mode signaling and new data indication signaling that the 2nd TB (a perhaps TB) is corresponding take T bit altogether, wherein, D bit in T bit represented pre-coding matrix index information and the number of plies information that the 2nd TB (a perhaps TB) is corresponding.D bit can represent 2 altogether
DThe state of kind, 2
DH kind state in the state of kind is above-mentioned expression, and remaining state is a reservation state.
Preferably, when the transmit antenna number of UE is 2, M=2 or 3, n
1Be 6, n
2The modulation coding mode signaling that is 1, one transmission block is 5 bits, and the new data indication signaling is 1 bit, and D is 3 or 5 or 6.
For example, shown in table 7 and table 8, when the transmit antenna number of UE is 2, and during M=2, PMI signaling length is 2 bits, and wherein the mode bit 1 of PMI signaling is used to indicate 2 layers of transmission, and it uses acquiescence pre-coding matrix; 1 layer of transmission of mode bit 2 expressions of PMI signaling.Modulation coding mode signaling and the new data indication signaling of the TB that does not enable are represented pre-coding matrix index.When the transmit antenna number of UE is 2, and during M=3, PMI signaling length is 3 bits, and wherein the mode bit 1～6 of PMI signaling is used to indicate the pre-coding matrix of 1 layer of transmission; The mode bit 7 of PMI signaling is used to indicate the pre-coding matrix of 2 layers of transmission.
Parameter (indication signaling) corresponding relation during table 7 liang antenna
Parameter (indication signaling) corresponding relation during table 8 liang antenna
| Indication signaling | The number of plies | Pre-coding matrix | The transmission block that enables |
| ??‘0’ | 2 layers | 2 layers pre-coding matrix index | Two transmission blocks enable |
| ??‘1’ | Reserve | Reserve | The one TB does not enable |
| ??‘2’ | Reserve | Reserve | The 2nd TB does not enable |
| Residual state | Reserve | Reserve | Reserve |
Fig. 3 is the schematic diagram according to the base station of the embodiment of the invention, and this base station comprises:
Constructing module 10 is used to create Downlink Control Information, comprises the parameter of the transmission block enable information, number of plies information and the PMI information that are used to indicate the TB that UE need retransmit in this Downlink Control Information; Sending module 20 is used for sending this Downlink Control Information to UE.
Preferably, when the antenna number of UE be that the quantity of 4,1 layers pre-coding matrix is n
1, 2 layers the quantity of pre-coding matrix is n
2, 3 layers the quantity of pre-coding matrix is n
3, 4 layers the quantity of pre-coding matrix is n
4, and the quantity of TB is 2 o'clock; Constructing module 10 comprises: module is set, is used to be provided with the different state of parametric representation N kind, N=n
2+ n
3+ n
4+ 2, be used for indication: whether two TB need to retransmit respectively; Which floor the indicated number of plies of number of plies information in the above-mentioned parameter is; And the indicated PMI of the PMI information in the above-mentioned parameter is which the pre-coding matrix index value in the above-mentioned number of plies of two TB when retransmitting simultaneously; Wherein, the state that the N kind is different is respectively
P
1, P
2, wherein,
Be respectively applied for indicating terminal: the number of plies that two TB all need retransmit and number of plies information is indicated is that 2 layers and the indicated PMI of PMI information are the n in 2 layers
2In the individual pre-coding matrix index which;
Be respectively applied for indicating terminal: the number of plies that two TB all need retransmit and number of plies information is indicated is that 3 layers and the indicated PMI of PMI information are the n in 3 layers
3In the individual pre-coding matrix index which;
Be respectively applied for indicating terminal: the number of plies that two TB all need retransmit and number of plies information is indicated is that 4 layers and the indicated PMI of PMI information are the n in 4 layers
4In the individual pre-coding matrix index which; P
1Be used for indicating terminal: two a TB only TB need to retransmit; P
2Be used for indicating terminal: two TB only the 2nd TB need to retransmit.
The base station of the foregoing description uses the Downlink Control Information method transmission of above preferred embodiment shown in Figure 2 to carry out the transmission of information, thereby needs the information of the TB of re-transmission to the UE indication.
From above description, as can be seen, the present invention has realized following technique effect: by comprise the transmission block enable information that is used to indicate the TB that UE need retransmit in sending to the Downlink Control Information of UE, UE can be known the TB that concrete needs retransmit according to this information, promptly be which TB or 2 TB among 2 TB all need retransmit, thereby solved the problem that the UE that exists in the correlation technique can't retransmit the TB of error of transmission last time, make UE can know the error situation of the TB of transmission, and when the TB error of transmission is arranged, carry out the re-transmission of wrong TB.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the sending method of a Downlink Control Information is characterized in that, comprising:
Create described Downlink Control Information, comprising the parameter of transmission block enable information, number of plies information and the pre-coding matrix index PMI information of the transmission block TB that is used to indicate described terminal to retransmit;
The base station sends described Downlink Control Information to terminal.
2. method according to claim 1 is characterized in that, the antenna number of described terminal is that the quantity of 4,1 layers pre-coding matrix is n
1, the quantity of 2 layers pre-coding matrix is n
2, the quantity of 3 layers pre-coding matrix is n
3, the quantity of 4 layers pre-coding matrix is n
4, and the quantity of TB is 2; Creating described Downlink Control Information comprises:
The different state of described parametric representation N kind is set, N=n
2+ n
3+ n
4+ 2, be used for indication:
Whether described two TB need to retransmit respectively;
Which floor the indicated number of plies of described number of plies information is;
The indicated PMI of described PMI information is the pre-coding matrix index values of described two TB when retransmitting simultaneously.
3. method according to claim 2 is characterized in that, the different state of described N kind is respectively
P
1, P
2, wherein,
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 2 layers and the indicated PMI of described PMI information are the n in described 2 layers
2In the individual pre-coding matrix index which;
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 3 layers and the indicated PMI of described PMI information are the n in described 3 layers
3In the individual pre-coding matrix index which;
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 4 layers and the indicated PMI of described PMI information are the n in described 4 layers
4In the individual pre-coding matrix index which;
Described P
1Be used for indicating described terminal: the TB of only described two TB needs to retransmit;
Described P
2Be used for indicating described terminal: the 2nd TB of only described two TB needs to retransmit.
4. method according to claim 2, it is characterized in that, when the TB that retransmits when needs was a TB among described two TB, the modulation coding mode signaling of the 2nd TB correspondence among two TB and described number of plies information and the PMI information that the new data indication signaling carries a described TB correspondence were used described in the described Downlink Control Information in described base station.
5. method according to claim 4, it is characterized in that described base station uses described in the described Downlink Control Information modulation coding mode signaling of the 2nd TB correspondence among two TB and described number of plies information that the new data indication signaling carries a described TB correspondence and the mode of PMI information to be:
The modulation coding mode signaling that described the 2nd TB correspondence is set is represented the state that the H kind is different, H=n jointly with the new data indication signaling
1+ n
2, be respectively
Wherein,
Described
Be respectively applied for the described terminal of indication: the indicated number of plies of described number of plies information is that 1 layer and the indicated PMI of described PMI information are the n in described 1 layer
1In the individual pre-coding matrix index which;
Described
Be respectively applied for the described terminal of indication: the indicated number of plies of described number of plies information is that 2 layers and the indicated PMI of described PMI information are the n in described 2 layers
2In the individual pre-coding matrix index which.
6. method according to claim 5 is characterized in that,
Described parameter takies M bit, and described N kind state is taken from 2 of described M bit formation
MIndividual value;
The modulation coding mode signaling of described the 2nd TB correspondence and new data indication signaling take T bit altogether, and described H kind state is taken from 2 of described T bit formation
TIndividual value.
7. method according to claim 6 is characterized in that, when the antenna number of described terminal is 4, and n
1=24, n
2=16, n
3=12, n
4=1, M is that the modulation coding mode signaling of 5 or 6, one described TB takies 5 bits, and the new data indication signaling of a described TB takies 1 bit, and T=6.
8. method according to claim 1 is characterized in that, the antenna number of described terminal is that the quantity of 2,1 layers pre-coding matrix is n
1, the quantity of 2 layers pre-coding matrix is n
2, the quantity of TB is 2; Creating described Downlink Control Information comprises:
The different state of described parametric representation N kind is set, N=n
2+ 2, be used for indication:
Whether described two TB need to retransmit respectively;
Which floor the indicated number of plies of described number of plies information is;
The indicated PMI of described PMI information is the pre-coding matrix index values of described two TB when retransmitting simultaneously.
9. method according to claim 8 is characterized in that, the different state of described N kind is respectively
P
1, P
2, wherein,
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 2 layers and the indicated PMI of described PMI information are the n in described 2 layers
2In the individual pre-coding matrix index which;
Described P
1Be used for indicating described terminal: the TB of only described two TB needs to retransmit;
Described P
2Be used for indicating described terminal: the 2nd TB of only described two TB needs to retransmit.
10. method according to claim 8, it is characterized in that, when the TB that retransmits when needs was a TB among described two TB, the modulation coding mode signaling of the 2nd TB correspondence among two TB and described number of plies information and the PMI information that the new data indication signaling carries a described TB correspondence were used described in the described Downlink Control Information in described base station.
11. method according to claim 10, it is characterized in that described base station uses described in the described Downlink Control Information modulation coding mode signaling of the 2nd TB correspondence among two TB and described number of plies information that the new data indication signaling carries a described TB correspondence and the mode of PMI information to be:
The modulation coding mode signaling that described the 2nd TB correspondence is set is represented the state that the H kind is different, H=n jointly with the new data indication signaling
1, be respectively
Wherein,
Described
Be respectively applied for the described terminal of indication: the indicated number of plies of described number of plies information is that 1 layer and the indicated PMI of described PMI information are the n in described 1 layer
1In the individual pre-coding matrix index which.
12. method according to claim 11 is characterized in that,
Described parameter takies M bit, and described N kind state is taken from 2 of described M bit formation
MIndividual value;
The modulation coding mode signaling of described the 2nd TB correspondence and new data indication signaling take T bit altogether, wherein, described H kind state take from that D bit in the described T bit constitute 2
DIndividual value.
13. method according to claim 12 is characterized in that, when the antenna number of described terminal is 2, and n
1=6, n
2=1, M is that the modulation coding mode signaling of 2 or 3, one described TB is 5 bits, and the new data indication signaling of a described TB is 1 bit, and D is 3 or 5 or 6.
14. a base station is characterized in that, comprising:
Constructing module is used to create Downlink Control Information, comprising the parameter of transmission block enable information, number of plies information and the pre-coding matrix index PMI information of the transmission block TB that is used to indicate described terminal to retransmit;
Sending module is used for sending described Downlink Control Information to terminal.
15. base station according to claim 14 is characterized in that, the antenna number of described terminal is that the quantity of 4,1 layers pre-coding matrix is n
1, 2 layers the quantity of pre-coding matrix is n
2, 3 layers the quantity of pre-coding matrix is n
3, 4 layers the quantity of pre-coding matrix is n
4, and the quantity of TB is 2; Described constructing module comprises:
Module is set, is used to be provided with the different state of described parametric representation N kind, N=n
2+ n
3+ n
4+ 2, be used for indication: whether two described TB need to retransmit respectively; Which floor the indicated number of plies of described number of plies information is; And the indicated PMI of described PMI information is the pre-coding matrix index values of described two TB when retransmitting simultaneously;
Wherein, the different state of described N kind is respectively
P
1, P
2, wherein,
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 2 layers and the indicated PMI of described PMI information are the n in 2 layers
2In the individual pre-coding matrix index which;
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 3 layers and the indicated PMI of described PMI information are the n in 3 layers
3In the individual pre-coding matrix index which;
Described
Be respectively applied for the described terminal of indication: the number of plies that described two TB all need retransmit and described number of plies information is indicated is that 4 layers and the indicated PMI of described PMI information are the n in 4 layers
4In the individual pre-coding matrix index which;
Described P
1Be used for indicating described terminal: described two a TB only TB need to retransmit;
Described P
2Be used for indicating described terminal: described two TB only the 2nd TB need to retransmit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010205867.2A CN101860424B (en) | 2010-06-17 | 2010-06-17 | The sending method of Downlink Control Information and base station |
| PCT/CN2010/076653 WO2011156992A1 (en) | 2010-06-17 | 2010-09-06 | Method and base station for transmitting downlink control information |
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| CN201010205867.2A CN101860424B (en) | 2010-06-17 | 2010-06-17 | The sending method of Downlink Control Information and base station |
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| WO2012072028A1 (en) * | 2010-12-02 | 2012-06-07 | 大唐移动通信设备有限公司 | Method and device for reporting channel state |
| CN102571298B (en) * | 2010-12-31 | 2015-01-07 | 华为技术有限公司 | Method and device for determining transmission of data block |
| CN102571298A (en) * | 2010-12-31 | 2012-07-11 | 华为技术有限公司 | Method and device for determining transmission of data block |
| CN102394677A (en) * | 2011-06-30 | 2012-03-28 | 电信科学技术研究院 | Method and device for transmitting pre-encoding matrix indication information |
| CN102394677B (en) * | 2011-06-30 | 2014-12-10 | 电信科学技术研究院 | Method and device for transmitting pre-encoding matrix indication information |
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| WO2018177229A1 (en) * | 2017-03-25 | 2018-10-04 | 华为技术有限公司 | Method, device and system for transmitting signaling |
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| CN110798295A (en) * | 2018-08-03 | 2020-02-14 | 维沃移动通信有限公司 | Method and device for determining physical shared channel transmission data |
| WO2020164134A1 (en) * | 2019-02-15 | 2020-08-20 | 华为技术有限公司 | Communication method, apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101860424B (en) | 2015-09-16 |
| WO2011156992A1 (en) | 2011-12-22 |
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