CN101505498A - Downlink control information sending method, related system and apparatus - Google Patents
Downlink control information sending method, related system and apparatus Download PDFInfo
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- CN101505498A CN101505498A CNA2009100800379A CN200910080037A CN101505498A CN 101505498 A CN101505498 A CN 101505498A CN A2009100800379 A CNA2009100800379 A CN A2009100800379A CN 200910080037 A CN200910080037 A CN 200910080037A CN 101505498 A CN101505498 A CN 101505498A
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Abstract
The invention discloses a downlink control information sending method and a related system thereof and a related device thereof. In the technical proposal, a terminal is arranged on at least one component carrier wave of a subframe to receive and transmit data, and a network side uses the set corresponding DCI Format to send the uplink and downlink dispatching information for the terminal on the downlink component carrier wave according to an index of the component carrier wave; a terminal side detects the corresponding DCI Format on the downlink component carrier wave according to the index of the carrier wave, thereby realizing the flexible arrangement of DCI format of the uplink and downlink dispatching information which is sent on the downlink carrier wave component and used for the terminal, achieving better backward compatibility, as well as saving signaling cost and improving the performance of the LTE system within a limitation of a reasonable number of blind tests.
Description
Technical field
The present invention relates to wireless communication technology, be meant a kind of Downlink Control Information (DCI, DownlinkControl Information) sending method and related system, device especially.
Background technology
Figure 1A and Figure 1B show the frame structure of Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) pattern and time division duplex (TDD, TimeDivision Duplex) pattern in Long Term Evolution (LTE, the Long Term Evolution) system respectively.In the frame structure of fdd mode, shown in Figure 1A, the radio frames of a 10ms (radio frame) is 0.5ms, is numbered 0～19 time slot (slot) and forms that by 20 length it is subframe (subframe) i of 1ms that time slot 2i and 2i+1 form length.In the frame structure of tdd mode, shown in Figure 1B, the radio frames of a 10ms is longly formed for the field of 5ms (half frame) by two, and field comprises 5 and longly is the subframe of 1ms; Subframe i is defined as 2 and longly is time slot 2i and the 2i+1 of 0.5ms.In two kinds of frame structures, for standard cyclic prefix (Normal CP, Normal CyclicPrefix), the symbol that it is 66.7us that time slot comprises 7 length, wherein the CP length of first symbol is 5.21us, the CP length of all the other 6 symbols is 4.69us; For expansion CP (Extended C P), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.
Following three kinds of downlink physical control channels have been defined in the LTE system: Physical Control Format Indicator Channel (PCFICH, Physical Control Format Indicator Channel), the automatic repeat requests (ARQ of physical mixed, Automatic Repeat Request) indicating channel (PHICH, Physical Hybrid ARQIndicator Channel) and Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel).
PCFICH is used for the indication of control channel form, (the OFDM that is used for the PDCCH transmission in subframe of concrete indication,) quantity information of symbol, on first OFDM symbol of subframe, sending, the place frequency location is by LTE system descending bandwidth and the common decision of cell ID (ID).
PHICH is used for the ACK/NACK feedback information that uplink mixes automatic repeat requests (H-ARQ, Hybrid Automatic RepeatRequest).The quantity of PHICH resource, time-frequency position can be determined jointly by system message and the sub-district ID in the Physical Broadcast Channel (PBCH, Physical Broadcast Channel).
PDCCH is used to transmit control informations such as up-downgoing schedule information, common control information.The form of DCI is divided into following several: DCI format 0 is used for the scheduling of Physical Uplink Shared Channel (PUSCH, Physical UplinkShared Channel); DCI format 1, DCI format 1A, DCI format 1B, DCI format1C, DCI format 1D are used for the different mode of Physical Downlink Shared Channel (PDSCH, Physical Downlink SharedChannel) code word scheduling; DCI format 2, DCI format 2A are used for the different mode of space division multiplexing; DCI format 3, DCI format 33A is used for Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) and the different mode of the power control instruction of Physical Downlink Control Channel (PUSCH, PhysicalDownlink Control Channel).
The physical resource of PDCCH transmission is with control channel unit (CCE, Control Channel Element) be unit, the size of a CCE is 9 resource unit group (REG, Resource Element Group), i.e. 36 Resource Unit (RE, Resource Element), the quantity of the PDCCH CCE that may take can be 1,2,4,8.
Size for four kinds of PDCCH physical resources of 1,2,4,8 CCE adopts tree-shaped polymerization (Aggregation), that is: the PDCCH of a CCE can be from any CCE position; The PDCCH of two CCE is from even number CCE position; The CCE position of the integral multiple of the PDCCH of four CCE since four; The CCE position of the integral multiple of the PDCCH of eight CCE since eight.Each CCE polymerization rank (Aggregation Level) definition search volume (Search Space), comprise public (common) search volume (common search space) and subscriber equipment (UE, User Equipment) proprietary (UE Specific) search volume (UE-specific search space).The CCE quantity of whole search volume, to be search volume length determined by shared OFDM symbol quantity of the indicated PDCCH of PCFICH in each descending sub frame and the group number of PHICH.UE DCI format by transmission mode of living in the search volume carries out blind Detecting to all possible PDCCH code check.
UE is set to based on following a kind of transmission mode (Transmission Mode) by high-level signaling is semi-static (semi-statically), indicates the data that receive the PDSCH transmission according to the PDCCH in UE particular search space: single antenna port, port 0 (Single-antenna port; Port0); Transmit diversity (Transmit diversity); Open-Loop Spatial Multiplexing (Open-loopspatial multiplexing); Closed-Loop Spatial Multiplexing (Closed-loop spatial multiplexing); Multi-user's multiple-input and multiple-output (MIMO, Multiple-Input Multiple-Out-put) (Multi-user MIMO); Closed loop Rank=1 precoding (Closed-loop Rank=1preceding) single antenna port, port 5 (Single-antenna port; Port5).
If UE is set to adopt Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number (C-RNTI by high level, Cell RadioNetwork Temporary Identifier) cyclic redundancy check (CRC) (CRC of scrambling, Cyclic RedundancyCode) carry out the PDCCH decoding, then UE is according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of definition in the table 1.
PDCCH and PDSCH that table 1 C-RNTI is provided with
If UE is set to adopt semi-persistent scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number (SPS-RNTI by high level, Semi-Persistently Scheduled Radio Network Temporary Identifier) CRC of scrambling carries out the PDCCH decoding, and then UE is according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of definition in the table 2.
PDCCH and PDSCH that table 2 SPS-C-RNTI is provided with
UE should detect one group of candidate's PDCCH to obtain control information in each non-discontinuous reception (non-DRX, non-Discontinuous Reception) subframe.Detection is meant according to all DCIformat to be detected PDCCH in organizing is decoded.It is respectively that 4 and 8 common search space and polymerization rank are respectively 1,2,4,8 the proprietary search volumes of UE that UE should detect a polymerization rank.The proprietary search volume of common search space and UE may be overlapping.The search volume of polymerization level definition is as shown in table 3.The DCI format that UE should detect depends on the transmission mode of the said setting in front.
The candidate PDCCH that table 3 UE is to be checked
LTE Release-8 has defined 6 kinds of bandwidth: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz.
Enhancement mode LTE (LTE-Advanced-Further Advancements for E-UTRA) is the evolution version of LTERelease-8.Except that satisfying or surpassing 3GPP TR 25.913: all related needs of " Requirements for EvolvedUTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) ", also will meet or exceed the demand of the IMT-Advanced of ITU-R proposition.Wherein, the demand with LTE Release-8 backward compatibility is meant: the UE of LTE Release-8 can work in the LTE-Advanced system; The terminal of LTE-Advanced can be worked in LTE Release-8 system.In addition, LTE-Advanced should be able to comprise under the frequency spectrum configuration wideer than LTE Release-8, the continuous frequency spectrum resource as 100MHz and working, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Consider compatibility with LTERelease-8, for bandwidth greater than 20MHz, adopt carrier wave to assemble the mode of (Carrieraggregation), that is: two or more component carriers (component carriers) are assembled to support the downstream transmission bandwidth greater than 20MHz, and UE can receive one or more component carriers simultaneously by its ability; There is the UE of the LTE-Advanced that surpasses the 20MHz receiving ability to receive the transmission on a plurality of component carriers simultaneously, the UE of LTE Release-8 can only receive the transmission on the one-component carrier wave, and the structure of this component carrier is followed LTE Release-8 standard.
At present, the specific implementation of the PDCCH of LTE-Advanced is combined by different codings and transmission plan, introduces respectively below.
Separately coding, transmission separately are meant that PDCCH transmits on single component carrier, and the up-downgoing schedule information of each component carrier is encoded separately, and with the PDSCH that is dispatched on same carrier wave.Because the up-downgoing schedule information of each component carrier is encoded separately, makes signaling consumption bigger; And owing to only transmit on single component carrier, UE need carry out blind check on all component carriers of its configuration, and it is very many to make UE carry out the number of times of blind check.
Combined coding, transmission separately are meant that PDCCH transmits, the up-downgoing schedule information combined coding of a plurality of component carriers on specific component carrier.Because transmission is the up-downgoing schedule information of combined coding, therefore, the length of information is bigger, and during a plurality of UE, the up-downgoing schedule information of possible each UE is transmitted near being positioned at same CCE position, and this will cause the blocking probability of PDCCH higher; And, owing to can't realize the dynamic dispatching of component carrier, when being less than the component carrier quantity of semi-static configuration, the component carrier quantity of actual schedule can cause the wasting of resources, even greater than the expense of coding separately.
Combined coding, joint transmission are meant that PDCCH transmits on a plurality of component carriers, the up-downgoing schedule information combined coding of a plurality of component carriers.Owing to can't make selected CCE performance close, so backwards compatibility is relatively poor; And, owing to can't realize the dynamic dispatching of component carrier, when being less than the component carrier quantity of semi-static configuration, the component carrier quantity of actual schedule can cause the wasting of resources, even greater than the expense of coding separately.
Principal and subordinate PDCCH, be meant by loaded information among the main PDCCH of set form and dynamically or semi-staticly notify DCI format from PDCCH, thereby solve the problem that the fixing combined coding of DCI form causes the wasting of resources, but this scheme but exists decoding chain problem, and promptly the performance of main PDCCH seriously restricts the performance of whole PDCCH.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of downlink control information sending method and related system, device, saves signaling consumption, improves the LTE systematic function.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of Downlink Control Information DCI sending method, terminal is configured in transceive data at least one component carrier of same subframe, and this method comprises: network side uses the corresponding DCIFormat that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index; End side detects corresponding D CI Format according to the component carrier index on this downlink component carrier.
The described DCI format that is used for terminal up-downgoing schedule information comprises: the subclass that is used for the DCI format set of terminal up-downgoing schedule information, described DCI format set comprises: the DCI format that has carried the up-downgoing schedule information of k component carrier, wherein, k=1,2,3 ... n, n give the quantity at the component carrier of same subframe of terminal for configuration.
The DCI format of described m component carrier correspondence has carried k
mThe uplink scheduling information of individual component carrier and/or down dispatch information, wherein, 1≤m≤n, 1≤k
m≤ n, described k
mDetermine by the component carrier index.
Described k
mDetermine by the component carrier index, further, k
m=m; Perhaps, described k
mChange in time, further, k
m=(i+m) modn+1, i is a subframe numbers; Perhaps, described k
m=1.
Described component carrier index m and k
mCorresponding relation specify by the network side signaling.
The described DCI format that is used for terminal up-downgoing schedule information comprises: the scheduling indication of the respective components carrier wave that is used to show that described DCIformat dispatches; And/or, be used for showing the scheduling situation of the above terminal up-downgoing schedule information of all the other downlink component carriers of same subframe.
The scheduling indication information of the respective components carrier wave that described DCI format is dispatched is the p bit, corresponding one-component carrier wave of each bit wherein, and the component carrier of each bit correspondence is different;
The scheduling indication situation of described all the other downlink component carriers is represented with 1 bit, be used for representing whether carry the described DCIFormat that is used for terminal up-downgoing schedule information on all the other downlink component carriers of same subframe, perhaps, the scheduling situation of described all the other downlink component carriers is represented with the n-1 bit, the one-component carrier wave in corresponding all the other downlink component carriers of each bit wherein, the component carrier of each bit correspondence is different, be used to represent whether to carry on the corresponding downlink component carrier the described DCI Format that is used for terminal up-downgoing schedule information, perhaps, the scheduling situation of described all the other downlink component carriers is represented with the q bit, be used for representing that this component carrier is in the described sequence number that is used for the DCI Format of terminal up-downgoing schedule information of same subframe carrying, perhaps, the scheduling situation of described all the other downlink component carriers is represented with the q bit, is used for representing the described downlink component carrier sum that is used for the DCI Format of terminal up-downgoing schedule information of same subframe carrying.
This method further comprises: notify transmission mode on the described component carrier to terminal.
Described transmission is used for also transmitting on the downlink component carrier of DCI format of terminal up-downgoing schedule information the DCI format of common control information.
A kind of system that realizes that DCI sends, terminal is configured in transceive data at least one component carrier of same subframe, this system comprises: network side and terminal, wherein, described network side is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index; Described terminal is used for according to the component carrier index, detects corresponding D CI Format on this downlink component carrier.
A kind of DCI dispensing device, terminal is configured in transceive data at least one component carrier of same subframe, this device comprises: coding unit and transmitting element, wherein, described coding unit is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index; Described transmitting element is used for transmitting the DCI format that is used for terminal up-downgoing schedule information on downlink component carrier.
According to above description as seen, the present invention has realized dynamically the coded system of the DCI format that is used for terminal up-downgoing schedule information that transmits on the descending carrier component is carried out dynamic-configuration flexibly, has backwards compatibility preferably; In reasonably the blind check number of times limits, can make full use of the advantage of combined coding, save signaling consumption, improve the LTE systematic function.The mode of transmission configuration flexibly that provides in the scheme among the present invention has alleviated the blocking probability problem of higher of existing combined coding PDCCH preferably, can solve the transmission problem of Downlink Control Information in the carrier wave gathering well, help the compatibility of LTE-Advanced and LTE Release-8, help the realization of LTE-Advanced system.
Description of drawings
Figure 1A is the frame structure schematic diagram of fdd mode;
Figure 1B is the frame structure schematic diagram of tdd mode;
Fig. 2 sends DCI format flow chart for network side among the present invention;
Fig. 3 is for realizing the system configuration schematic diagram that Downlink Control Information sends among the present invention;
Fig. 4 is for realizing the apparatus structure schematic diagram that Downlink Control Information sends among the present invention.
Embodiment
Among the present invention, terminal is configured in transceive data at least one component carrier of same subframe, and network side uses the corresponding DCI Format that sets to transmit on this downlink component carrier according to the component carrier index to be used for terminal up-downgoing schedule information; End side detects corresponding D CI Format according to the component carrier index on this downlink component carrier.Be used for having certain corresponding relation between the DCI Format of terminal up-downgoing schedule information and component carrier index and the component carrier index, this corresponding relation can set in advance in network side and end side; Also can determine, and be notified to terminal by network side.
The described DCI format that is used for terminal up-downgoing schedule information comprises: the subclass that is used for the DCI format set of terminal up-downgoing schedule information, described DCI format set comprises: the DCI format that has carried the up-downgoing schedule information of k component carrier, wherein, k=1,2,3 ... n, n give the quantity at the component carrier of same subframe of terminal for configuration.
The DCI format of m component carrier correspondence has carried k
mThe uplink scheduling information of individual component carrier and/or down dispatch information, wherein, 1≤m≤n, 1≤k
m≤ n, described k
mDetermine described k by the component carrier index
m=m; Perhaps, k
mChange in time, for example, k
m=(i+m) modn+1, i is a subframe numbers; Described k
m=1.Described component carrier index m and k
mCorresponding relation can set in advance, also can dynamically specify by signaling by network side.
Fig. 2 sends DCI format flow chart for network side among the present invention, and as shown in Figure 2, the concrete processing procedure that network side sends DCI format may further comprise the steps:
Step 201: terminal is configured in transceive data on n the component carrier of same subframe, and network side determines that the DCI format of the up-downgoing schedule information of each component carrier gives send mode on the downlink component carrier of terminal in each configuration.According to the LTE system in the practical application, 1≤n≤5.
Step 202: the described send mode of network side notice terminal, specifically can realize by high-level signaling.The coded system that the specific implementation of the described send mode of network side notice terminal is adopted in the time of can directly notifying the DCI format of up-downgoing schedule information of each component carrier of terminal and DCI format that the transmission of each downlink component carrier is used for terminal up-downgoing schedule information for: network side, under this implementation, network side also need be determined the DCI format of the up-downgoing schedule information of each component carrier in step 201; The coded system that is adopted during the DCI format that also can be used for terminal up-downgoing schedule information for the transmission mode and the transmission of each downlink component carrier of each component carrier of: network side notice terminal.
Step 203: the DCIformat of the up-downgoing schedule information of the definite component carrier that need transmit of network side, Chuan Shu DCI format need to determine transmission to be used for the downlink component carrier of the DCI format of terminal up-downgoing schedule information as required, DCI format to the up-downgoing schedule information of the component carrier of needs transmission encodes according to the coded system of DCI format on this downlink component carrier, obtain being used for the DCI format of terminal up-downgoing schedule information, transmission is used for the DCI format of terminal up-downgoing schedule information on this downlink component carrier.The DCI format that is used for terminal up-downgoing schedule information that transmits on downlink component carrier comprises the subclass of the DCI format set that is used for terminal up-downgoing schedule information, described DCIformat set comprises: the DCI format of the up-downgoing schedule information combined coding of the DCI format of the up-downgoing schedule information of single component carrier and k component carrier, wherein, k=2,3 ... n.The DCI format that transmits on the downlink component carrier can also comprise the DCI format that is used for common control information.
Coded system in the described send mode that network side is determined in the step 201 can be to k for the DCI format that is used for terminal up-downgoing schedule information that transmits on m the component carrier
mThe DCI format that obtains behind the DCI format combined coding of the up-downgoing schedule information of individual component carrier, wherein, 1≤m≤n, 1≤k
m≤ n.Described k
mCan determine by the component carrier index, for example, k
m=m; Perhaps, k
mChange in time, for example, k
m=(i+m) modn+1, i is a subframe numbers; Perhaps, described k
m=1.In the step 202, for m component carrier, the coded system k that network side is adopted in the time of can notifying m component carrier of terminal to transmit the DCI format that is used for terminal up-downgoing schedule information
mk
mExpression is used for the quantity of DCI format of up-downgoing schedule information of the component carrier of the combined coding that the DCI format of terminal up-downgoing schedule information comprised.
Terminal is carried out DCI format according to described send mode and is detected on the downlink component carrier that is disposed.The detected DCI format that is used for terminal up-downgoing schedule information of terminal comprises the subclass of the DCI format set that is used for terminal up-downgoing schedule information, described DCI format set comprises: the DCI format of the up-downgoing schedule information combined coding of the DCI format of the up-downgoing schedule information of single component carrier and k component carrier, wherein, k=2,3 ... n.Terminal is also carried out the detection of common control information DCI format on the downlink component carrier that is disposed.
During coded system that network side is adopted when directly notifying the DCI format of up-downgoing schedule information of each component carrier of terminal and DCI format that the transmission of each downlink component carrier is used for terminal up-downgoing schedule information, terminal according to described send mode carries out DCI format detection on the downlink component carrier that is disposed specific implementation is: on the downlink component carrier that is disposed, DCI format according to the up-downgoing schedule information of each component carrier of corresponding coding manner and network side notice carries out corresponding DCI format and detects.The transmission mode of each component carrier of network side notice terminal, and the transmission of each downlink component carrier adopted when being used for the DCI format of terminal up-downgoing schedule information coded system the time, terminal according to described send mode carries out DCI format detection on the downlink component carrier that is disposed specific implementation is: terminal is determined the DCI format of the up-downgoing schedule information of each component carrier according to the transmission mode of each component carrier, on the downlink component carrier that is disposed, according to corresponding coding manner, and the DCI format of the up-downgoing schedule information of each component carrier of determining according to transmission mode, carry out corresponding DCI format and detect.
In addition, the DCI format that also can set in advance the up-downgoing schedule information of each component carrier in network side and terminal disposes the coded system of giving on the component carrier of terminal at each, can dispose by signaling and be implemented in setting in advance of terminal.Like this, the direct execution in step 203 of network side gets final product, terminal is then determined the DCI format of the up-downgoing schedule information of each component carrier according to the transmission mode of each component carrier, on the downlink component carrier that is disposed, the DCI format of the up-downgoing schedule information of each component carrier of determining according to corresponding coding manner and according to transmission mode carries out corresponding DCI format and detects.The transmission mode of each component carrier can be notified terminal by the high-level signaling of network side.
For example, terminal disposes the coded system of giving on the component carrier of terminal according to the DCI format of the up-downgoing schedule information of each component carrier that sets in advance at each, determines that the DCI format that is used for terminal up-downgoing schedule information that transmits on m the component carrier is to k
mThe DCI format that obtains behind the DCIformat combined coding of the up-downgoing schedule information of individual component carrier, wherein, 1≤m≤n, 1≤k
m≤ n.Described k
mCan determine by the component carrier index, for example, k
m=m; Perhaps, k
mChange in time, for example, k
m=(i+m) modn+1, i is a subframe numbers; Perhaps, described k
m=1.
The DCI format that is used for terminal up-downgoing schedule information that transmits on the downlink component carrier in the step 203 can comprise the scheduling indication of the respective components carrier wave that is used to show that described DCI format is dispatched, like this, after terminal detects DCI format, can according to the scheduling that comprises among detected DCI format indication know up-downgoing schedule information among this DCI format at component carrier.This scheduling indication can realize by the mode of bitmap (bitmap), for example, terminal is configured in transceive data on 3 component carriers of same subframe, then the form of scheduling indication can 101, be used for showing the DCIformat that comprises this scheduling indication the up-downgoing schedule information at be component carrier 1 and component carrier 3, therefore, terminal be identified for up-downgoing schedule information that the DCI format of terminal up-downgoing schedule information comprises at be component carrier 1 and component carrier 3.
The DCI format that is used for terminal up-downgoing schedule information that transmits on the downlink component carrier in the step 203 can also comprise the scheduling situation of whether carrying the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers that are used for showing same subframe, be the blind check indication, like this, after terminal detects DCIformat, can know whether also needs carry out DCI format detection on all the other downlink component carriers of same subframe according to the blind check indication that comprises among the detected DCI format, to save the blind check number of times.The blind check indication can realize by a bit (bit) promptly indicate whether carry the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers by the two states of 1bit; Also can realize by bitmap, the bit position that bitmap promptly is set is corresponding to all the other downlink component carriers, this bitmap comprises the n-1 bit, represents whether carry the DCI format that is used for terminal up-downgoing schedule information on the corresponding downlink component carrier by the value of each bit position of bitmap; Can also realize that this sum information can also can be whole sums for remaining sum by the total information of downlink component carrier.If total information is the residue sum, be not 0 o'clock then at the residue sum, show and also carried the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers; Otherwise, show the DCI format that does not have carrying to be used for terminal up-downgoing schedule information on all the other downlink component carriers.If total information is all total, then the terminal downlink component carrier quantity that will detect DCI format compares with whole sums, if less than whole sums, then showing, the downlink component carrier quantity that detects DCI format also carried the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers; Otherwise, show the DCI format that does not have carrying to be used for terminal up-downgoing schedule information on all the other downlink component carriers.The blind check indication can also realize by the sequence number of DCI Format, network side carries out serial number to the DCI Format that transmits on each downlink component carrier, terminal determines whether carry the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers according to the sequence number of detected DCI Format, for example, it is 3 DCI Format that terminal only detects sequence number, therefore, terminal determines to also have two DCI Format to need to detect before this DCI Format according to sequence number 3.
In addition, network side can also be notified terminal CCE polymerization rank and/or search volume length, so that terminal is more efficient to the detection of DCI format, specifically can realize by high-level signaling.
Be configured in terminal below that transceive data is an example on three component carriers of same subframe, the network side that relates among the present invention and the processing of end side are made a more detailed description.Three component carriers are respectively first component carrier, second component carrier wave and three-component carrier wave.
Specific embodiment one
In the present embodiment, in the specific implementation, the coded system that network side is adopted when directly notifying the DCI format of up-downgoing schedule information of each component carrier of terminal and DCIformat that the transmission of each downlink component carrier is used for terminal up-downgoing schedule information.Concrete processing procedure may further comprise the steps:
Step 301: network side is determined the DCI format of the up-downgoing schedule information of each component carrier.Concrete, network side determines that the DCI format of the uplink scheduling information of first component carrier is that the DCI format of DCI format 1, down dispatch information is DCI format 1A, the DCI format that determines the uplink scheduling information of second component carrier wave is that the DCI format of DCI format 1A, down dispatch information is DCI format 1, and the DCI format that determines the uplink scheduling information of three-component carrier wave is that the DCI format of DCI format 1, down dispatch information is DCI format 2.
And network side determines that also the DCI format of the up-downgoing schedule information of each component carrier disposes the coded system of giving on the component carrier of terminal at each.Concrete, network side is determined the DCI format of the up-downgoing schedule information of the single component carrier of transmission on first downlink component carrier, the DCI format of the up-downgoing schedule information combined coding of two component carriers of transmission on second downlink component carrier, the DCI format of the up-downgoing schedule information combined coding of three component carriers of transmission on the 3rd downlink component carrier.
Step 302: the DCI format of the up-downgoing schedule information of each component carrier of determining in the network side notice end step 301, promptly the DCI format of the uplink scheduling information of first component carrier is DCI format1, the DCI format of down dispatch information is DCI format 1A, and the DCI format of the uplink scheduling information of second component carrier wave is DCI format 1A, the DCI format of down dispatch information is DCIformat 1, and the DCI format of the uplink scheduling information of three-component carrier wave is DCI format 1, the DCI format of down dispatch information is DCI format 2.
And, the DCI format of the up-downgoing schedule information of each definite component carrier to the coded system on the component carrier of terminal, promptly transmits the DCI format of the up-downgoing schedule information combined coding of three component carriers in each configuration in the network side notice end step 301 on the DCI format of the up-downgoing schedule information combined coding of two component carriers of transmission, the 3rd downlink component carrier on the DCI format of the up-downgoing schedule information of the single component carrier of transmission, second downlink component carrier on first downlink component carrier.
Step 303: the DCIformat of the up-downgoing schedule information of the definite component carrier that need transmit of network side, Chuan Shu DCI format need to determine transmission to be used for the downlink component carrier of the DCI format of terminal up-downgoing schedule information as required, DCI format to the up-downgoing schedule information of the component carrier of needs transmission encodes according to the coded system of DCI format on this downlink component carrier, obtain being used for the DCI format of terminal up-downgoing schedule information, transmission is used for the DCI format of terminal up-downgoing schedule information on this downlink component carrier.Concrete, that network side is determined the needs transmission is the DCI format 1 of the uplink scheduling information of first component carrier, the DCI format 1A of down dispatch information, and the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1 of down dispatch information; Owing to need the DCI format of the up-downgoing schedule information of two component carriers of transmission, therefore, determine on second downlink component carrier, to transmit the DCI format that is used for terminal up-downgoing schedule information, like this, network side transmits the DCI format that is used for terminal up-downgoing schedule information on second downlink component carrier, and, the DCI format of the uplink scheduling information that this DCI format that is used for terminal up-downgoing schedule information is first component carrier and the uplink scheduling information combined coding of second component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and second component carrier wave, the DCI format that promptly is used for terminal up-downgoing schedule information is that DCI format 1 is the DCI format that obtains behind the DCI format 1A combined coding with DCI format, and the DCI format that obtains behind DCI format 1A and DCI format 1 combined coding.
Step 304: terminal is on the downlink component carrier that is disposed, and the DCI format according to the up-downgoing schedule information of each component carrier of corresponding coding manner and network side notice carries out corresponding DCIformat and detects.Concrete, because the DCI format of the up-downgoing schedule information of the single component carrier of transmission on first downlink component carrier, therefore, terminal detects the DCI format 1 of the uplink scheduling information of first component carrier, the DCI format 1A of down dispatch information, perhaps the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1 of down dispatch information on first downlink component carrier; Because the DCIformat of the up-downgoing schedule information combined coding of two component carriers of transmission on second downlink component carrier, therefore, terminal detects the DCI format of the uplink scheduling information combined coding of the uplink scheduling information of first component carrier and second component carrier wave on second downlink component carrier, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and second component carrier wave, the perhaps DCIformat of the uplink scheduling information combined coding of the uplink scheduling information of first component carrier and three-component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and three-component carrier wave, perhaps the DCI format of the uplink scheduling information combined coding of the uplink scheduling information of second component carrier wave and three-component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of second component carrier wave and three-component carrier wave; Because the DCI format of the up-downgoing schedule information combined coding of three component carriers of transmission on the 3rd downlink component carrier, therefore, terminal detects the DCI format of the down dispatch information combined coding of the down dispatch information of down dispatch information, second component carrier wave of the DCI format of uplink scheduling information combined coding of the uplink scheduling information of uplink scheduling information, second component carrier wave of first component carrier and three-component carrier wave and first component carrier and three-component carrier wave on the 3rd downlink component carrier.Terminal is also carried out the detection of common control information DCI format on the downlink component carrier that is disposed.
If the up-downgoing schedule information of each component carrier is identical, then the DCI format of the combined coding that detects on the second component carrier wave of terminal only comprises a kind of form.
The DCI format that is used for terminal up-downgoing schedule information that transmits on second downlink component carrier can comprise the scheduling indication 011 of the respective components carrier wave that is used to show that described DCI format is dispatched, therefore, terminal be identified for up-downgoing schedule information that the DCI format of terminal up-downgoing schedule information comprises at be component carrier 1 and component carrier 2.
The DCI format that is used for terminal up-downgoing schedule information that transmits on second downlink component carrier can also comprise the blind check indication 010 that whether has the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers that are used for showing same subframe, after terminal detects DCI format, determine on first downlink component carrier and the 3rd downlink component carrier, not have carrying to be used for the DCIformat of terminal up-downgoing schedule information, therefore, terminal stops to carry out the DCIformat detection on first downlink component carrier and the 3rd downlink component carrier.
Network side can also be notified terminal CCE polymerization rank and/or search volume length by high-level signaling, so that terminal is more efficient to the detection of DCI format.
Specific embodiment two
In the present embodiment, in the specific implementation, the coded system that the transmission mode of each component carrier of network side notice terminal and each downlink component carrier are adopted when transmitting the DCI format that is used for terminal up-downgoing schedule information.Concrete processing procedure may further comprise the steps:
Step 401: network side determines that also the DCI format of the up-downgoing schedule information of each component carrier disposes the coded system of giving on the component carrier of terminal at each.Concrete, network side is determined the DCI format of the up-downgoing schedule information of the single component carrier of transmission on first downlink component carrier, the DCI format of the up-downgoing schedule information combined coding of two component carriers of transmission on second downlink component carrier, the DCI format of the up-downgoing schedule information combined coding of three component carriers of transmission on the 3rd downlink component carrier.
Step 402: the coded system that the transmission mode of each component carrier of network side notice terminal and each downlink component carrier are adopted when transmitting the DCI format that is used for terminal up-downgoing schedule information.Concrete, the transmission mode of each component carrier of network side notice terminal, and the DCI format of the up-downgoing schedule information of each definite component carrier disposes the coded system of giving on the component carrier of terminal at each in the notice end step 401, i.e. the DCI format of the up-downgoing schedule information of the single component carrier of transmission on first downlink component carrier, the DCIformat of the up-downgoing schedule information combined coding of two component carriers of transmission on second downlink component carrier, the DCI format of the up-downgoing schedule information combined coding of three component carriers of transmission on the 3rd downlink component carrier.
Step 403: the DCIformat of the up-downgoing schedule information of the definite component carrier that need transmit of network side, Chuan Shu DCI format need to determine transmission to be used for the downlink component carrier of the DCI format of terminal up-downgoing schedule information as required, DCI format to the up-downgoing schedule information of the component carrier of needs transmission encodes according to the coded system of DCI format on this downlink component carrier, obtain being used for the DCI format of terminal up-downgoing schedule information, transmission is used for the DCI format of terminal up-downgoing schedule information on this downlink component carrier.Concrete, that network side is determined the needs transmission is the DCI format 1 of the uplink scheduling information of first component carrier, the DCI format 1A of down dispatch information, the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1B of down dispatch information, and the DC Iformat 1D of the DCI format 1A of the uplink scheduling information of three-component carrier wave, down dispatch information; Owing to need the DCI format of the up-downgoing schedule information of three component carriers of transmission, therefore, can determine on first component carrier and second downlink component carrier, to transmit the DCIformat that is used for terminal up-downgoing schedule information, like this, network side transmits the DCI format that is used for terminal up-downgoing schedule information on first component carrier and second downlink component carrier, and, the DCI format that is used for terminal up-downgoing schedule information that transmits on first component carrier is the up-downgoing schedule information of second component carrier wave, the DCI format that is used for terminal up-downgoing schedule information that transmits on the second component carrier wave is the DCI format of the uplink scheduling information combined coding of the uplink scheduling information of first component carrier and three-component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and three-component carrier wave, the DCI format that is used for terminal up-downgoing schedule information that promptly transmits on the second component carrier wave is that DCI format 1 is the DCI format that obtains behind the DCI format 1A combined coding with DCIformat, and the DCI format that obtains behind DCI format 1A and the DCI format 1D combined coding.
Step 404: terminal is determined the up-downgoing schedule information of first component carrier, the up-downgoing schedule information of second component carrier wave and the up-downgoing schedule information of three-component carrier wave according to the transmission mode of network side notice, then on the downlink component carrier that is disposed, the DCI format of the up-downgoing schedule information of each component carrier of determining according to corresponding coding manner and according to transmission mode carries out corresponding DCI format and detects.Concrete, because the DCI format of the up-downgoing schedule information of the single component carrier of transmission on first downlink component carrier, therefore, terminal detects the DCI format 1 of the uplink scheduling information of first component carrier, the DCI format 1A of down dispatch information on first downlink component carrier, perhaps the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1 of down dispatch information, perhaps the DCI format 1D of the DCI format 1A of the uplink scheduling information of three-component carrier wave, down dispatch information; Because the DCIformat of the up-downgoing schedule information combined coding of two component carriers of transmission on second downlink component carrier, therefore, terminal detects the DCI format of the uplink scheduling information combined coding of the uplink scheduling information of first component carrier and second component carrier wave on second downlink component carrier, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and second component carrier wave, the perhaps DCIformat of the uplink scheduling information combined coding of the uplink scheduling information of first component carrier and three-component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of first component carrier and three-component carrier wave, perhaps the DCI format of the uplink scheduling information combined coding of the uplink scheduling information of second component carrier wave and three-component carrier wave, and the DCI format of the down dispatch information combined coding of the down dispatch information of second component carrier wave and three-component carrier wave; Because the DCI format of the up-downgoing schedule information combined coding of three component carriers of transmission on the 3rd downlink component carrier, therefore, terminal detects the DCI format of the down dispatch information combined coding of the down dispatch information of down dispatch information, second component carrier wave of the DCI format of uplink scheduling information combined coding of the uplink scheduling information of uplink scheduling information, second component carrier wave of first component carrier and three-component carrier wave and first component carrier and three-component carrier wave on the 3rd downlink component carrier.Terminal is also carried out the detection of common control information DCI format on the downlink component carrier that is disposed.
If the up-downgoing schedule information of each component carrier is identical, then the DCI format of the combined coding that detects on the second component carrier wave of terminal only comprises a kind of form.
The DCI format that is used for terminal up-downgoing schedule information that transmits on first downlink component carrier can comprise the scheduling indication 010 of the respective components carrier wave that is used to show that described DCI format is dispatched, the DCI format that is used for terminal up-downgoing schedule information that transmits on second downlink component carrier can comprise the scheduling indication 101 of the respective components carrier wave that is used to show that described DCI format is dispatched, therefore, the up-downgoing schedule information that the DCI format that is used for terminal up-downgoing schedule information that terminal is determined to transmit on first downlink component carrier comprises at be component carrier 2, the up-downgoing schedule information that the DCI format that is used for terminal up-downgoing schedule information that determines to transmit on second downlink component carrier comprises at be component carrier 1 and component carrier 3.
The DCI format that is used for terminal up-downgoing schedule information that transmits on first downlink component carrier or second downlink component carrier can also comprise the blind check indication that whether has the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers that are used for showing same subframe, this blind check indication can be whole sums, after terminal detects DCI format, the quantity of detected DCI format is compared with whole sums, if less than whole sums, then showing, the quantity of detected DCI format also carried the DCI format that is used for terminal up-downgoing schedule information on all the other downlink component carriers; Otherwise, show the DCI format that does not have carrying to be used for terminal up-downgoing schedule information on all the other downlink component carriers.
Network side can also be notified terminal CCE polymerization rank and/or search volume length by high-level signaling, so that terminal is more efficient to the detection of DCI format.
On the realization basis in the specific embodiment two, also can further transmit the DCI format that is used for terminal up-downgoing schedule information on the three-component carrier wave, the DCI format of this terminal up-downgoing schedule information is the DCI format of the up-downgoing schedule information combined coding of three component carriers.Certainly, also can on the three-component carrier wave, transmit the DCI forrmat that is used for terminal up-downgoing schedule information separately.
Fig. 3 is for realizing the system configuration schematic diagram that Downlink Control Information sends among the present invention, as shown in Figure 3, this system comprises network side and terminal, terminal is configured in transceive data on n the component carrier of same subframe, wherein, network side is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index; Terminal is used for according to the component carrier index, detects corresponding D CI Format on this downlink component carrier.The described DCIformat that is used for terminal up-downgoing schedule information comprises the subclass of the DCI format set that is used for terminal up-downgoing schedule information, and described DCI format set comprises: carried the DCI format of the up-downgoing schedule information of k component carrier, wherein, k=1,2,3 ... n.
The DCI format that network side is further used for the up-downgoing schedule information of definite each component carrier disposes the send mode of giving on the downlink component carrier of terminal at each, and notifies described send mode to terminal.
The coded system that the specific implementation of network side notice terminal send side formula is adopted in the time of can directly notifying the DCI format of up-downgoing schedule information of each component carrier of terminal and DCI format that the transmission of each downlink component carrier is used for terminal up-downgoing schedule information for: network side, described network side are further used for determining the DCI format of the up-downgoing schedule information of each component carrier; Terminal is used at the downlink component carrier that is disposed, and the DCI format according to the up-downgoing schedule information of each component carrier of corresponding coding manner and network side notice carries out corresponding DCI format and detects.
The specific implementation of network side notice terminal send side formula also can be the coded system that adopted during DCIformat that the transmission mode of each component carrier of network side notice terminal and the transmission of each downlink component carrier are used for terminal up-downgoing schedule information; Terminal is used for determining according to the transmission mode of each component carrier the DCI format of the up-downgoing schedule information of each component carrier, on the downlink component carrier that is disposed, the DCIformat of the up-downgoing schedule information of each component carrier of determining according to corresponding coding manner and according to transmission mode carries out corresponding DCI format and detects.
The above network side can be the base station.
Fig. 4 is for realizing the apparatus structure schematic diagram that Downlink Control Information sends among the present invention, as shown in Figure 4, this device comprises: coding unit and transmitting element, terminal is configured in transceive data on n the component carrier of same subframe, wherein, coding unit is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index; Transmitting element is used for transmitting the DCI format that is used for terminal up-downgoing schedule information on downlink component carrier.The described DCI format that is used for terminal up-downgoing schedule information comprises: the subclass that is used for the DCI format set of terminal up-downgoing schedule information, described DCI format set comprises: the DCIformat that has carried the up-downgoing schedule information of k component carrier, wherein, k=1,2,3 ... n, n give the quantity at the component carrier of same subframe of terminal for configuration.
This device further comprises: determining unit and notification unit, and wherein, the DCI format that determining unit is used for the up-downgoing schedule information of definite each component carrier disposes the send mode of giving on the downlink component carrier of terminal at each; Notification unit is used for notifying described send mode to terminal.
Described determining unit is further used for the DCIformat of the up-downgoing schedule information of definite each component carrier, described notification unit comprises the DCI format of the up-downgoing schedule information of each component carrier in the send mode of terminal notice, also comprise the coded system that is adopted when each downlink component carrier transmits the DCI format that is used for terminal up-downgoing schedule information in this send mode.
Described determining unit is further used for determining the transmission mode of each component carrier, described notification unit comprises the transmission mode of each component carrier in the send mode of terminal notice, also comprise the coded system that is adopted when each downlink component carrier transmits the DCI format that is used for terminal up-downgoing schedule information in this send mode.
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)
1, a kind of Downlink Control Information DCI sending method, terminal are configured in transceive data at least one component carrier of same subframe, it is characterized in that this method comprises:
Network side uses the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index;
End side detects corresponding D CI Format according to the component carrier index on this downlink component carrier.
2, method according to claim 1, it is characterized in that, the described DCI format that is used for terminal up-downgoing schedule information comprises: the subclass that is used for the DCI format set of terminal up-downgoing schedule information, described DCI format set comprises: carried the DCI format of the up-downgoing schedule information of k component carrier, wherein, k=1,2,3 ... n, n give the quantity at the component carrier of same subframe of terminal for configuration.
3, method according to claim 1 and 2 is characterized in that, the DCI format of described m component carrier correspondence has carried k
mThe uplink scheduling information of individual component carrier and/or down dispatch information, wherein, 1≤m≤n, 1≤k
m≤ n, described k
mDetermine by the component carrier index.
4, method according to claim 3 is characterized in that,
Described k
mDetermine by the component carrier index, further, k
m=m; Perhaps,
Described k
mChange in time, further, k
m=(i+m) mod n+1, i is a subframe numbers; Perhaps,
Described k
m=1.
5, method according to claim 3 is characterized in that, described component carrier index m and k
mCorresponding relation specify by the network side signaling.
According to the arbitrary described method of claim 1 to 5, it is characterized in that 6, the described DCI format that is used for terminal up-downgoing schedule information comprises:
The scheduling indication of the respective components carrier wave that is used to show that described DCI format is dispatched; And/or,
Be used for showing the scheduling situation of the above terminal up-downgoing schedule information of all the other downlink component carriers of same subframe.
7, method according to claim 6 is characterized in that,
The scheduling indication information of the respective components carrier wave that described DCI format is dispatched is the p bit, corresponding one-component carrier wave of each bit wherein, and the component carrier of each bit correspondence is different;
The scheduling indication situation of described all the other downlink component carriers represents with 1 bit, is used for representing whether carrying the described DCIFormat that is used for terminal up-downgoing schedule information on all the other downlink component carriers of same subframe, perhaps,
The scheduling situation of described all the other downlink component carriers is represented with the n-1 bit, the one-component carrier wave in corresponding all the other downlink component carriers of each bit wherein, the component carrier of each bit correspondence is different, be used to represent whether carry the described DCIFormat that is used for terminal up-downgoing schedule information on the corresponding downlink component carrier, perhaps
The scheduling situation of described all the other downlink component carriers is represented with the q bit, is used for representing this component carrier in the described sequence number that is used for the DCI Format of terminal up-downgoing schedule information of same subframe carrying, perhaps,
The scheduling situation of described all the other downlink component carriers is represented with the q bit, is used for representing the described downlink component carrier sum that is used for the DCI Format of terminal up-downgoing schedule information of same subframe carrying.
8, according to the arbitrary described method of claim 1 to 5, it is characterized in that this method further comprises: notify transmission mode on the described component carrier to terminal.
According to the arbitrary described method of claim 1 to 5, it is characterized in that 9, described transmission is used for also transmitting on the downlink component carrier of DCI format of terminal up-downgoing schedule information the DCIformat of common control information.
10, a kind of system that realizes that DCI sends, terminal are configured in transceive data at least one component carrier of same subframe, it is characterized in that this system comprises: network side and terminal, wherein,
Described network side is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index;
Described terminal is used for according to the component carrier index, detects corresponding D CIFormat on this downlink component carrier.
11, a kind of DCI dispensing device, terminal are configured in transceive data at least one component carrier of same subframe, it is characterized in that this device comprises: coding unit and transmitting element, wherein,
Described coding unit is used for using the corresponding DCI Format that sets to transmit the up-downgoing schedule information that is used for terminal on this downlink component carrier according to the component carrier index;
Described transmitting element is used for transmitting the DCIformat that is used for terminal up-downgoing schedule information on downlink component carrier.
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