CN101505498B - 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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- CN101505498B CN101505498B CN200910080037.9A CN200910080037A CN101505498B CN 101505498 B CN101505498 B CN 101505498B CN 200910080037 A CN200910080037 A CN 200910080037A CN 101505498 B CN101505498 B CN 101505498B
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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, refer to especially a kind of Downlink Control Information (DCI, DownlinkControl Information) sending method and related system, device.
Background technology
Figure 1A and Figure 1B show respectively Long Term Evolution (LTE, Long Term Evolution) Frequency Division Duplexing (FDD) (FDD in system, Frequency Division Duplex) frame structure of pattern and time division duplex (TDD, TimeDivision Duplex) pattern.In the frame structure of fdd mode, as shown in Figure 1A, the radio frames of a 10ms (radio frame) is 0.5ms, is numbered 0～19 time slot (slot) and forms by 20 length, and time slot 2i and 2i+1 form subframe (subframe) i that length is 1ms.In the frame structure of tdd mode, as shown in Figure 1B, the radio frames of a 10ms is long for the field of 5ms (half frame) forms by two, field comprise 5 long be the subframe of 1ms; Subframe i be defined as 2 long be time slot 2i and the 2i+1 of 0.5ms.In two kinds of frame structures, for standard cyclic prefix (Normal CP, Normal CyclicPrefix), a time slot comprises the symbol that 7 length are 66.7us, wherein the CP length of first symbol is 5.21us, and 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 in LTE system, have been defined: Physical Control Format Indicator Channel (PCFICH, Physical Control Format Indicator Channel), physical mixed HARQ (ARQ, Automatic Repeat Request) indicating channel (PHICH, Physical Hybrid ARQIndicator Channel) and Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel).
PCFICH is for the indication of control channel form, (the OFDM transmitting for PDCCH in a subframe of concrete indication,) quantity information of symbol, on first OFDM symbol of subframe, sending, place frequency location is determined jointly by LTE system descending bandwidth and cell ID (ID).
PHICH is for the ACK/NACK feedback information of uplink mixed automatic retransfer request (H-ARQ, Hybrid Automatic RepeatRequest).The quantity of PHICH resource, time-frequency position can be determined jointly by system message and the community ID in Physical Broadcast Channel (PBCH, Physical Broadcast Channel).
PDCCH is used for transmitting the control informations such as up-downgoing schedule information, common control information.The form of DCI is divided into following several: DCI format 0 is for the scheduling of Physical Uplink Shared Channel (PUSCH, Physical UplinkShared Channel); The different mode that DCI format 1, DCI format 1A, DCI format 1B, DCI format1C, DCI format 1D dispatch for Physical Downlink Shared Channel (PDSCH, Physical Downlink SharedChannel) code word; DCI format 2, DCI format 2A are for the different mode of space division multiplexing; DCI format 3, DCI format 33A is 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 CCE that PDCCH 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) defines a 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, be that the shared OFDM symbol quantity of the indicated PDCCH of search volume length PCFICH in each descending sub frame and the group number of PHICH are determined.UE carries out blind Detecting by the DCI format of transmission mode of living in to all possible PDCCH code check in search volume.
UE, by the semi-static a kind of transmission mode (Transmission Mode) being set to based on following of high-level signaling (semi-statically), indicates to receive the data of PDSCH transmission: single antenna port, port 0 (Single-antenna port according to the PDCCH of the specific search volume of UE; Port 0); Transmit diversity (Transmit diversity); Open-Loop Spatial Multiplexing (Open-loop spatial multiplexing); Closed-Loop Spatial Multiplexing (Closed-loop spatiial 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=1 preceding) 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 PDCCH decoding, UE is according to respective sets incompatible decoding PDCCH and all relevant PDSCH of definition in table 1.
PDCCH and PDSCH that table 1 C-RNTI arranges
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 PDCCH decoding, and UE is according to respective sets incompatible decoding PDCCH and all relevant PDSCH of definition in table 2.
PDCCH and PDSCH that table 2 SPS-C-RNTI arranges
The PDCCH that UE should detect one group of candidate in each non-discontinuous reception (non-DRX, non-Discontinuous Reception) subframe is to obtain control information.Detection refers to according to all DCIformat to be detected PDCCH in group is decoded.It is respectively that 4 and 8 public 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 public 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 said setting above.
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 meeting 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, refer to the demand of LTE Release-8 backward compatibility: the UE of LTE Release-8 can work in 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 the spectrum disposition wider than LTE Release-8 at the spectrum dispositions of different sizes, as worked under the continuous frequency spectrum resource of 100MHz, to reach higher performance and target peak speed.Consider the compatibility with LTERelease-8, for the bandwidth that is greater than 20MHz, adopt the mode of carrier aggregation (Carrieraggregation), that is: two or more component carriers (component carriers) assemble to support to be greater than the downstream transmission bandwidth of 20MHz, and UE can receive one or more component carriers by its ability simultaneously; There is the UE of the LTE-Advanced that surpasses 20MHz receiving ability to the transmission on a plurality of component carriers, to receive simultaneously, the UE of LTE Release-8 can only receive the transmission on 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, individual transmission, refer to that PDCCH transmits on single component carrier, and the up-downgoing schedule information of each component carrier is encoded separately, and with dispatched PDSCH on same carrier wave.Because the up-downgoing schedule information of each component carrier is encoded separately, make signaling consumption larger; And owing to only transmitting on single component carrier, UE need to carry out blind check on all component carriers for its configuration, make UE carry out the number of times of blind check very many.
Combined coding, individual transmission, refer to that PDCCH transmits on specific component carrier, the up-downgoing schedule information combined coding of a plurality of component carriers.Due to what transmit, be the up-downgoing schedule information of combined coding, therefore, the Length Ratio of information is larger, and during a plurality of UE, the up-downgoing schedule information of possible each UE is positioned near transmission same CCE position, and this will cause the blocking probability of PDCCH higher; And, owing to cannot realizing 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, be even greater than the expense of independent coding.
Combined coding, joint transmission, refer to that PDCCH transmits on a plurality of component carriers, the up-downgoing schedule information combined coding of a plurality of component carriers.Owing to making, selected CCE performance is close, so backwards compatibility is poor; And, owing to cannot realizing 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, be even greater than the expense of independent coding.
Principal and subordinate PDCCH, refer to that the information of carrying in the main PDCCH by set form dynamically or semi-statically notifies the 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, 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 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 transceiving data at least one component carrier of same subframe, and the method comprises: network side is used the corresponding DCIFormat setting on this downlink component carrier, transmit the up-downgoing schedule information that is used for terminal according to component carrier index; End side, according to component carrier index, detects corresponding DCI Format on this downlink component carrier.
For the described DCI format of terminal up-downgoing schedule information, comprise: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal.
DCI format corresponding to described m component carrier 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
mby component carrier index, determined.
Described k
mby component carrier index, determined, further, k
m=m; Or, described k
mtemporal evolution, further, k
m=(i+m) mod n+1, i is subframe numbers; Or, described k
m=1.
Described component carrier index m and k
mcorresponding relation by network side signaling, specified.
The described DCI format for terminal up-downgoing schedule information, comprising: for showing the scheduling indication of the respective components carrier wave that described DCIformat dispatches; And/or, 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 dispatches is p bit, corresponding one-component carrier wave of each bit wherein, and the component carrier that each bit is corresponding is different;
The scheduling indication situation of described all the other downlink component carriers represents with 1 bit, for representing whether carry the described DCIFormat for terminal up-downgoing schedule information on all the other downlink component carriers of same subframe, or, the scheduling situation of described all the other downlink component carriers represents with n-1 bit, the one-component carrier wave in corresponding all the other downlink component carriers of each bit wherein, the component carrier that each bit is corresponding is different, for representing whether carry the described DCI Format for terminal up-downgoing schedule information on corresponding downlink component carrier, or, the scheduling situation of described all the other downlink component carriers represents with q bit, for representing that this component carrier is in the sequence number of the described DCI Format for terminal up-downgoing schedule information of same subframe carrying, or, the scheduling situation of described all the other downlink component carriers represents with q bit, for representing the downlink component carrier sum of the described DCI Format for terminal up-downgoing schedule information of same subframe carrying.
The method further comprises: to terminal, notify the transmission mode on described component carrier.
On the downlink component carrier of described transmission for the DCI format of terminal up-downgoing schedule information, also transmit the DCI format of common control information.
A kind of system that realizes DCI transmission, terminal is configured in transceiving data at least one component carrier of same subframe, this system comprises: network side and terminal, wherein, described network side is for being used the corresponding DCI Format setting to transmit the up-downgoing schedule information for terminal on this downlink component carrier according to component carrier index; Described terminal, for according to component carrier index, detects corresponding DCI Format on this downlink component carrier.
A kind of DCI dispensing device, terminal is configured in transceiving data at least one component carrier of same subframe, this device comprises: coding unit and transmitting element, wherein, described coding unit is for being used the corresponding DCI Format setting to transmit the up-downgoing schedule information for terminal on this downlink component carrier according to component carrier index; Described transmitting element is used for the DCI format of terminal up-downgoing schedule information for transmission on downlink component carrier.
Visible according to above description, the present invention has realized and dynamically the coded system of the DCI format for terminal up-downgoing schedule information transmitting on descending carrier component has been carried out to dynamic-configuration flexibly, has good backwards compatibility; In reasonably blind check number of times limits, can make full use of the advantage of combined coding, save signaling consumption, improve LTE systematic function.The mode of transmission configuration flexibly providing in scheme in the present invention has alleviated the higher problem of blocking probability of existing combined coding PDCCH preferably, can solve well the transmission problem of Downlink Control Information in carrier aggregation, the compatibility that is conducive to LTE-Advanced and LTE Release-8, is conducive to the realization of LTE-Advanced system.
Accompanying drawing explanation
Figure 1A is the frame structure schematic diagram of fdd mode;
Figure 1B is the frame structure schematic diagram of tdd mode;
Fig. 2 is that in the present invention, network side sends DCI format flow chart;
Fig. 3 realizes the system configuration schematic diagram that Downlink Control Information sends in the present invention;
Fig. 4 realizes the apparatus structure schematic diagram that Downlink Control Information sends in the present invention.
Embodiment
In the present invention, terminal is configured in transceiving data at least one component carrier of same subframe, and network side is used the corresponding DCI Format setting transmit on this downlink component carrier according to component carrier index to be used for terminal up-downgoing schedule information; End side, according to component carrier index, detects corresponding DCI Format on this downlink component carrier.For having certain corresponding relation between the DCI Format of terminal up-downgoing schedule information and component carrier index and component carrier index, this corresponding relation can set in advance in network side and end side; Also can be determined by network side, and notice is to terminal.
The described DCI format for terminal up-downgoing schedule information comprises: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal.
M DCI format corresponding to component carrier 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
mby component carrier index, determined described k
m=m; Or, k
mtemporal evolution, for example, k
m=(i+m) mod n+1, i is subframe numbers; Described k
m=1.Described component carrier index m and k
mcorresponding relation can set in advance, also can by signaling, dynamically be specified by network side.
Fig. 2 is that in the present invention, network side sends DCI format flow chart, and as shown in Figure 2, the concrete processing procedure that network side sends DCI format comprises the following steps:
Step 201: terminal is configured in transceiving data on n component carrier of same subframe, the DCI format of up-downgoing schedule information that network side is determined each component carrier in each configuration to the send mode on the downlink component carrier of terminal.According to the LTE system in practical application, 1≤n≤5.
Step 202: send mode described in network side notification terminal, specifically can realize by high-level signaling.Described in network side notification terminal, the specific implementation of send mode can be: the coded system that the DCI format of the up-downgoing schedule information of direct each component carrier of notification terminal of network side and each downlink component carrier adopt while transmitting for the DCI format of terminal up-downgoing schedule information, under this implementation, network side also needs the DCI format of the up-downgoing schedule information of definite each component carrier in step 201; Also can be: the coded system that the transmission mode of each component carrier of network side notification terminal and each downlink component carrier adopt while transmitting for the DCI format of terminal up-downgoing schedule information.
Step 203: network side is determined the DCIformat of the up-downgoing schedule information of the component carrier that needs transmission, the DCI format of transmission determines as required needs transmission for the downlink component carrier of the DCI format of terminal up-downgoing schedule information, coded system according to DCI format on this downlink component carrier is encoded to the DCI format of the up-downgoing schedule information of the component carrier of needs transmission, obtain the DCI format for terminal up-downgoing schedule information, on this downlink component carrier, transmission is for the DCI format of terminal up-downgoing schedule information.The DCI format for terminal up-downgoing schedule information transmitting on downlink component carrier comprises the subset for the DCI format set of 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 transmitting on downlink component carrier can also comprise the DCI format for common control information.
Coded system in the described send mode that in step 201, network side is determined can be to k for the DCI format for terminal up-downgoing schedule information transmitting on m component carrier
mthe DCI format obtaining after 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 be determined by component carrier index, for example, k
m=m; Or, k
mtemporal evolution, for example, k
m=(i+m) mod n+1, i is subframe numbers; Or, described k
m=1.In step 202, for m component carrier, network side can notification terminal the coded system k that adopts during for the DCI format of terminal up-downgoing schedule information of m component carrier transmission
m.K
mthe quantity of DCI format of up-downgoing schedule information that represents the component carrier of the combined coding that the DCI format for terminal up-downgoing schedule information comprises.
Terminal is carried out DCI format detection on configured downlink component carrier according to described send mode.The DCI format for terminal up-downgoing schedule information that terminal detects comprises the subset for the DCI format set of 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 configured downlink component carrier.
During coded system that the transmission of the DCI format of the up-downgoing schedule information of direct each component carrier of notification terminal of network side and each downlink component carrier adopts during for the DCI format of terminal up-downgoing schedule information, terminal is carried out DCI format detection on configured downlink component carrier specific implementation according to described send mode is: on configured downlink component carrier, DCI format according to the up-downgoing schedule information of each component carrier of corresponding coded system and network side notice, carries out corresponding DCI format and detects.The transmission mode of each component carrier of network side notification terminal, and the transmission of each downlink component carrier adopt during for the DCI format of terminal up-downgoing schedule information coded system time, terminal is carried out DCI format detection on configured downlink component carrier specific implementation according to described send mode 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 configured downlink component carrier, according to corresponding coded system, and the DCI format of the up-downgoing schedule information of each component carrier of determining according to transmission mode, carrying out corresponding DCI format detects.
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 configures to the coded system on the component carrier of terminal at each, can realize setting in advance in terminal by signal deployment.Like this, network side directly performs step 203, 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 configured downlink component carrier, according to corresponding coded system and according to the DCI format of the up-downgoing schedule information of each definite component carrier of transmission mode, carry out corresponding DCI format and detect.The transmission mode of each component carrier can be carried out notification terminal by the high-level signaling of network side.
For example, terminal configures to the coded system on the component carrier of terminal according to the DCI format of the up-downgoing schedule information of each component carrier setting in advance at each, determines that the DCI format for terminal up-downgoing schedule information transmitting on m component carrier is to k
mthe DCI format obtaining after 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 be determined by component carrier index, for example, k
m=m; Or, k
mtemporal evolution, for example, k
m=(i+m) mod n+1, i is subframe numbers; Or, described k
m=1.
The DCI format for terminal up-downgoing schedule information transmitting on downlink component carrier in step 203 can comprise for showing the scheduling indication of the respective components carrier wave that described DCI format dispatches, like this, terminal detects after DCI format, can according to the scheduling indication comprising in the DCI format detecting know up-downgoing schedule information in this DCI format for component carrier.This scheduling indication can realize by the mode of bitmap (bitmap), for example, terminal is configured in transceiving data on 3 component carriers of same subframe, the form of scheduling indication can 101, for show to comprise the DCIformat that this scheduling indicates up-downgoing schedule information for 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 for be component carrier 1 and component carrier 3.
The DCI format for terminal up-downgoing schedule information transmitting on downlink component carrier in step 203 can also comprise for showing whether to carry on all the other downlink component carriers of same subframe scheduling situation for the DCI format of terminal up-downgoing schedule information, being blind check indication, like this, terminal detects after DCIformat, can know whether also DCI format detection need to be carried out on all the other downlink component carriers of same subframe according to the blind check indication comprising in the DCI format detecting, to save blind check number of times.Blind check indication can realize by a bit (bit), by the two states of 1bit, indicates on all the other downlink component carriers, whether to carry the DCI format for terminal up-downgoing schedule information; Also can realize by bitmap, a bit position of bitmap is set corresponding to all the other downlink component carriers, this bitmap comprises n-1 bit, by the value of each bit position of bitmap, represents on corresponding downlink component carrier, whether to carry the DCI format for terminal up-downgoing schedule information; Can also realize by the total information of downlink component carrier, this sum information can be also whole sums for remaining sum.If total information is residue sum, at residue sum, be not 0 o'clock, show also to have carried on all the other downlink component carriers the DCI format for terminal up-downgoing schedule information; Otherwise showing does not have carrying for the DCI format of terminal up-downgoing schedule information on all the other downlink component carriers.If total information is all total, terminal compares the downlink component carrier quantity that DCI format detected with whole sums, if the downlink component carrier quantity of DCI format detected, be less than whole sums, show also to have carried on all the other downlink component carriers the DCI format for terminal up-downgoing schedule information; Otherwise showing does not have carrying for the DCI format of terminal up-downgoing schedule information on all the other downlink component carriers.Blind check indication can also realize by the sequence number of DCI Format, network side carries out serial number to the DCI Format transmitting on each downlink component carrier, terminal determines on all the other downlink component carriers, whether to carry the DCI format for terminal up-downgoing schedule information according to the sequence number of the DCI Format that detects, for example, it is 3 DCI Format that terminal only detects sequence number, therefore, terminal, according to sequence number 3, determines that front two the DCI Format in addition of this DCI Format need to detect.
In addition, all right notification terminal CCE polymerization rank of network side and/or search volume length, so that terminal is more efficient to the detection of DCI format, specifically can realize by high-level signaling.
It is example that the terminal of take is below configured in transceiving data on three component carriers of same subframe, and the processing of the network side relating in the present invention and end side is made a more detailed description.Three component carriers are respectively the first component carrier, second component carrier wave and three-component carrier wave.
Specific embodiment one
In the present embodiment, in specific implementation, the coded system that the DCI format of the up-downgoing schedule information of direct each component carrier of notification terminal of network side and each downlink component carrier adopt while transmitting for the DCIformat of terminal up-downgoing schedule information.Concrete processing procedure comprises the following 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 the 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 also determines that the DCI format of the up-downgoing schedule information of each component carrier configures to the coded system on the component carrier of terminal at each.Concrete, network side is determined the DCI format of the up-downgoing schedule information of transmitting single component carrier on the first downlink component carrier, on the second downlink component carrier, transmit the DCI format of the up-downgoing schedule information combined coding of two component carriers, on the 3rd downlink component carrier, transmit the DCI format of the up-downgoing schedule information combined coding of three component carriers.
Step 302: the DCI format of the up-downgoing schedule information of each component carrier of determining in network side notification terminal step 301, the DCI format of the uplink scheduling information of the 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 component carrier of determining in network side notification terminal step 301 to the coded system on the component carrier of terminal, transmits the DCI format that transmits the up-downgoing schedule information combined coding of three component carriers on the DCI format that transmits the up-downgoing schedule information combined coding of two component carriers on the DCI format, the second downlink component carrier of the up-downgoing schedule information of single component carrier, the 3rd downlink component carrier in each configuration on the first downlink component carrier.
Step 303: network side is determined the DCIformat of the up-downgoing schedule information of the component carrier that needs transmission, the DCI format of transmission determines as required needs transmission for the downlink component carrier of the DCI format of terminal up-downgoing schedule information, coded system according to DCI format on this downlink component carrier is encoded to the DCI format of the up-downgoing schedule information of the component carrier of needs transmission, obtain the DCI format for terminal up-downgoing schedule information, on this downlink component carrier, transmission is for the DCI format of terminal up-downgoing schedule information.Concrete, that network side is determined needs transmission is the DCI format 1 of the uplink scheduling information of the 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 to transmitting the DCI format of the up-downgoing schedule information of two component carriers, therefore, determine the DCI format that need to transmit for terminal up-downgoing schedule information on the second downlink component carrier, like this, network side transmits the DCI format for terminal up-downgoing schedule information on the second downlink component carrier, and, should be the DCI format of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of second component carrier wave for the DCI format of terminal up-downgoing schedule information, and the DCI format of the down dispatch information combined coding of the down dispatch information of the first component carrier and second component carrier wave, for the DCI format of terminal up-downgoing schedule information, be DCI format 1 be the DCI format obtaining after DCI format 1A combined coding with DCI format, and the DCI format obtaining after DCI format 1A and DCI format 1 combined coding.
Step 304: terminal is on configured downlink component carrier, and the DCI format according to the up-downgoing schedule information of each component carrier of corresponding coded system and network side notice, carries out corresponding DCIformat and detect.Concrete, owing to transmitting the DCI format of the up-downgoing schedule information of single component carrier on the first downlink component carrier, therefore, terminal detects the DCI format 1 of the uplink scheduling information of the first component carrier, the DCI format 1A of down dispatch information on the first downlink component carrier, or the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1 of down dispatch information, owing to transmitting the DCIformat of the up-downgoing schedule information combined coding of two component carriers on the second downlink component carrier, therefore, terminal detects the DCI format of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of second component carrier wave on the second downlink component carrier, and the DCI format of the down dispatch information combined coding of the down dispatch information of the first component carrier and second component carrier wave, or the DCIformat of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of three-component carrier wave, and the DCI format of first down dispatch information of component carrier and the down dispatch information combined coding of three-component carrier wave, or the DCI format of the uplink scheduling information of second component carrier wave and the uplink scheduling information combined coding of three-component carrier wave, and the DCI format of the down dispatch information of second component carrier wave and the down dispatch information combined coding of three-component carrier wave, owing to transmitting the DCI format of the up-downgoing schedule information combined coding of three component carriers on the 3rd downlink component carrier, therefore, terminal detects uplink scheduling information, the uplink scheduling information of second component carrier wave and the DCI format of the uplink scheduling information combined coding of three-component carrier wave of the first component carrier and the DCI format of the down dispatch information of the first component carrier, the down dispatch information of second component carrier wave and the down dispatch information combined coding of three-component carrier wave on the 3rd downlink component carrier.Terminal is also carried out the detection of common control information DCI format on configured downlink component carrier.
If the up-downgoing schedule information of each component carrier is identical, the DCI format of the combined coding that terminal detects on second component carrier wave only comprises a kind of form.
The DCI format for terminal up-downgoing schedule information transmitting on the second downlink component carrier can comprise for showing the scheduling indication 011 of the respective components carrier wave that described DCI format dispatches, therefore, terminal be identified for up-downgoing schedule information that the DCI format of terminal up-downgoing schedule information comprises for be component carrier 1 and component carrier 2.
The DCI format for terminal up-downgoing schedule information transmitting on the second downlink component carrier can also comprise for showing whether there is the blind check indication 010 for the DCI format of terminal up-downgoing schedule information on all the other downlink component carriers of same subframe, terminal detects after DCI format, determine and on the first downlink component carrier and the 3rd downlink component carrier, there is no carrying for the DCIformat of terminal up-downgoing schedule information, therefore, terminal stops carrying out DCIformat detection on the first downlink component carrier and the 3rd downlink component carrier.
Network side can also pass through high-level signaling notification terminal CCE polymerization rank and/or search volume length, so that terminal is more efficient to the detection of DCI format.
Specific embodiment two
In the present embodiment, in specific implementation, the coded system that the transmission mode of each component carrier of network side notification terminal and each downlink component carrier adopt while transmitting for the DCI format of terminal up-downgoing schedule information.Concrete processing procedure comprises the following steps:
Step 401: network side also determines that the DCI format of the up-downgoing schedule information of each component carrier configures to the coded system on the component carrier of terminal at each.Concrete, network side is determined the DCI format of the up-downgoing schedule information of transmitting single component carrier on the first downlink component carrier, on the second downlink component carrier, transmit the DCI format of the up-downgoing schedule information combined coding of two component carriers, on the 3rd downlink component carrier, transmit the DCI format of the up-downgoing schedule information combined coding of three component carriers.
Step 402: the coded system that the transmission mode of each component carrier of network side notification terminal and each downlink component carrier adopt while transmitting for the DCI format of terminal up-downgoing schedule information.Concrete, the transmission mode of each component carrier of network side notification terminal, and the DCI format of the up-downgoing schedule information of each component carrier of determining in notification terminal step 401 configures to the coded system on the component carrier of terminal at each, on the first downlink component carrier, transmit the DCI format of the up-downgoing schedule information of single component carrier, on the second downlink component carrier, transmit the DCIformat of the up-downgoing schedule information combined coding of two component carriers, on the 3rd downlink component carrier, transmit the DCI format of the up-downgoing schedule information combined coding of three component carriers.
Step 403: network side is determined the DCIformat of the up-downgoing schedule information of the component carrier that needs transmission, the DCI format of transmission determines as required needs transmission for the downlink component carrier of the DCI format of terminal up-downgoing schedule information, coded system according to DCI format on this downlink component carrier is encoded to the DCI format of the up-downgoing schedule information of the component carrier of needs transmission, obtain the DCI format for terminal up-downgoing schedule information, on this downlink component carrier, transmission is for the DCI format of terminal up-downgoing schedule information.Concrete, that network side is determined needs transmission is the DCI format 1 of the uplink scheduling information of the 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 DCI format 1A of the uplink scheduling information of three-component carrier wave is, the DCI format 1D of down dispatch information; owing to need to transmitting the DCI format of the up-downgoing schedule information of three component carriers, therefore, can determine and need on the first component carrier and the second downlink component carrier, transmit the DCIformat for terminal up-downgoing schedule information, like this, network side transmits the DCI format for terminal up-downgoing schedule information on the first component carrier and the second downlink component carrier, and, the DCI format for terminal up-downgoing schedule information transmitting on the first component carrier is the up-downgoing schedule information of second component carrier wave, the DCI format for terminal up-downgoing schedule information transmitting on second component carrier wave is the DCI format of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of three-component carrier wave, and the DCI format of first down dispatch information of component carrier and the down dispatch information combined coding of three-component carrier wave, be that the DCI format for terminal up-downgoing schedule information transmitting on second component carrier wave is that DCI format 1 is the DCI format obtaining after DCI format 1A combined coding with DCIformat, and the DCI format obtaining after DCI format 1A and DCI format 1D combined coding.
Step 404: terminal is determined the up-downgoing schedule information of the 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 configured downlink component carrier, according to corresponding coded system and according to the DCI format of the up-downgoing schedule information of each definite component carrier of transmission mode, carry out corresponding DCI format and detect.Concrete, owing to transmitting the DCI format of the up-downgoing schedule information of single component carrier on the first downlink component carrier, therefore, terminal detects the DCI format 1 of the uplink scheduling information of the first component carrier, the DCI format 1A of down dispatch information on the first downlink component carrier, or the DCI format 1A of the uplink scheduling information of second component carrier wave, the DCI format 1 of down dispatch information, or the DCI format 1A of the uplink scheduling information of three-component carrier wave is, the DCI format 1D of down dispatch information, owing to transmitting the DCIformat of the up-downgoing schedule information combined coding of two component carriers on the second downlink component carrier, therefore, terminal detects the DCI format of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of second component carrier wave on the second downlink component carrier, and the DCI format of the down dispatch information combined coding of the down dispatch information of the first component carrier and second component carrier wave, or the DCIformat of the uplink scheduling information of the first component carrier and the uplink scheduling information combined coding of three-component carrier wave, and the DCI format of first down dispatch information of component carrier and the down dispatch information combined coding of three-component carrier wave, or the DCI format of the uplink scheduling information of second component carrier wave and the uplink scheduling information combined coding of three-component carrier wave, and the DCI format of the down dispatch information of second component carrier wave and the down dispatch information combined coding of three-component carrier wave, owing to transmitting the DCI format of the up-downgoing schedule information combined coding of three component carriers on the 3rd downlink component carrier, therefore, terminal detects uplink scheduling information, the uplink scheduling information of second component carrier wave and the DCI format of the uplink scheduling information combined coding of three-component carrier wave of the first component carrier and the DCI format of the down dispatch information of the first component carrier, the down dispatch information of second component carrier wave and the down dispatch information combined coding of three-component carrier wave on the 3rd downlink component carrier.Terminal is also carried out the detection of common control information DCI format on configured downlink component carrier.
If the up-downgoing schedule information of each component carrier is identical, the DCI format of the combined coding that terminal detects on second component carrier wave only comprises a kind of form.
The DCI format for terminal up-downgoing schedule information transmitting on the first downlink component carrier can comprise for showing the scheduling indication 010 of the respective components carrier wave that described DCI format dispatches, the DCI format for terminal up-downgoing schedule information transmitting on the second downlink component carrier can comprise for showing the scheduling indication 101 of the respective components carrier wave that described DCI format dispatches, therefore, terminal determine up-downgoing schedule information that the DCI format for terminal up-downgoing schedule information that transmits on the first downlink component carrier comprises for be component carrier 2, determine up-downgoing schedule information that the DCI format for terminal up-downgoing schedule information that transmits on the second downlink component carrier comprises for be component carrier 1 and component carrier 3.
The DCI format for terminal up-downgoing schedule information transmitting on the first downlink component carrier or the second downlink component carrier can also comprise for showing whether there is the blind check indication for the DCI format of terminal up-downgoing schedule information on all the other downlink component carriers of same subframe, this blind check indication can be whole sums, terminal detects after DCI format, the quantity of the DCI format detecting and whole sums are compared, if the quantity of the DCI format detecting is less than whole sums, show also to have carried on all the other downlink component carriers the DCI format for terminal up-downgoing schedule information, otherwise showing does not have carrying for the DCI format of terminal up-downgoing schedule information on all the other downlink component carriers.
Network side can also pass through high-level signaling notification terminal CCE polymerization rank and/or search volume length, so that terminal is more efficient to the detection of DCI format.
On realization basis in specific embodiment two, also can further on three-component carrier wave, transmit the DCI format for terminal up-downgoing schedule information, 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 three-component carrier wave, transmit separately the DCI format for terminal up-downgoing schedule information.
Fig. 3 realizes the system configuration schematic diagram that Downlink Control Information sends in the present invention, as shown in Figure 3, this system comprises network side and terminal, terminal is configured in transceiving data on n component carrier of same subframe, wherein, network side is for being used the corresponding DCI Format setting to transmit the up-downgoing schedule information for terminal on this downlink component carrier according to component carrier index; Terminal, for according to component carrier index, detects corresponding DCI Format on this downlink component carrier.The described DCIformat for terminal up-downgoing schedule information comprises the subset for the DCI format set of 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 configures to the send mode on the downlink component carrier of terminal at each, and notifies described send mode to terminal.
The specific implementation of network side notification terminal send mode can be: the coded system that the DCI format of the up-downgoing schedule information of direct each component carrier of notification terminal of network side and each downlink component carrier adopt while transmitting for the DCI format of terminal up-downgoing schedule information, and described network side is further used for the DCI format of the up-downgoing schedule information of definite each component carrier; Terminal, at configured downlink component carrier, according to the DCI format of the up-downgoing schedule information of each component carrier of corresponding coded system and network side notice, is carried out corresponding DCI format detection.
The specific implementation of network side notification terminal send mode can be also: the coded system that the transmission mode of each component carrier of network side notification terminal and each downlink component carrier adopt while transmitting for the DCIformat of terminal up-downgoing schedule information; Terminal is for determining the DCI format of the up-downgoing schedule information of each component carrier according to the transmission mode of each component carrier, on configured downlink component carrier, according to corresponding coded system and according to the DCIformat of the up-downgoing schedule information of each definite component carrier of transmission mode, carry out corresponding DCI format and detect.
The above network side can be base station.
Fig. 4 realizes the apparatus structure schematic diagram that Downlink Control Information sends in the present invention, as shown in Figure 4, this device comprises: coding unit and transmitting element, terminal is configured in transceiving data on n component carrier of same subframe, wherein, coding unit is for being used the corresponding DCI Format setting to transmit the up-downgoing schedule information for terminal on this downlink component carrier according to component carrier index; Transmitting element is used for the DCI format of terminal up-downgoing schedule information for transmission on downlink component carrier.The described DCI format for terminal up-downgoing schedule information comprises: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal.
This device further comprises: determining unit and notification unit, and wherein, determining unit configures to the send mode on the downlink component carrier of terminal for determining the DCI format of the up-downgoing schedule information of each component carrier at each; Notification unit is 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 is to the DCI format of the up-downgoing schedule information that comprises each component carrier in the send mode of terminal notice, the coded system adopting while also comprising each downlink component carrier transmission for the DCI format of 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 is to the transmission mode that comprises each component carrier in the send mode of terminal notice, the coded system adopting while also comprising each downlink component carrier transmission for the DCI format of terminal up-downgoing schedule information in this send mode.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (9)
1. a Downlink Control Information DCI sending method, terminal is configured in transceiving data at least one component carrier of same subframe, it is characterized in that, and the method comprises:
Network side is used the corresponding DCI format setting on downlink component carrier, to transmit the up-downgoing schedule information for terminal according to component carrier index; For the described DCI format of terminal up-downgoing schedule information, comprise: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal; M DCIformat corresponding to component carrier 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
mby component carrier index, determined; End side, according to component carrier index, detects corresponding DCI format on described downlink component carrier.
2. method according to claim 1, is characterized in that,
Described k
mby component carrier index, determined, further, k
m=m; Or,
Described k
mtemporal evolution, further, k
m=(i+m) modn+1, i is subframe numbers; Or,
Described k
m=1.
3. method according to claim 1, is characterized in that, described component carrier index m and k
mcorresponding relation by network side signaling, specified.
4. according to the arbitrary described method of claims 1 to 3, it is characterized in that, the described DCI format for terminal up-downgoing schedule information, comprising:
For showing the scheduling indication of the respective components carrier wave that described DCI format dispatches; And/or,
For showing the scheduling situation of the above terminal up-downgoing schedule information of all the other downlink component carriers of same subframe.
5. method according to claim 4, is characterized in that,
The scheduling indication information of the respective components carrier wave that described DCI format dispatches is p bit, corresponding one-component carrier wave of each bit wherein, and the component carrier that each bit is corresponding is different;
The scheduling indication situation of described all the other downlink component carriers represents with 1 bit, for representing, on all the other downlink component carriers of same subframe, whether carries the described DCIformat for terminal up-downgoing schedule information, or,
The scheduling situation of described all the other downlink component carriers represents with n-1 bit, the one-component carrier wave in corresponding all the other downlink component carriers of each bit wherein, the component carrier that each bit is corresponding is different, for representing whether carry the described DCI format for terminal up-downgoing schedule information on corresponding downlink component carrier, or
The scheduling situation of described all the other downlink component carriers represents with q bit, for representing that this component carrier is in the sequence number of the described DCI format for terminal up-downgoing schedule information of same subframe carrying, or,
The scheduling situation of described all the other downlink component carriers represents with q bit, for representing the downlink component carrier sum of the described DCI format for terminal up-downgoing schedule information of same subframe carrying.
6. according to the arbitrary described method of claims 1 to 3, it is characterized in that, the method further comprises: to terminal, notify the transmission mode on described component carrier.
7. according to the arbitrary described method of claims 1 to 3, it is characterized in that, on the downlink component carrier of described transmission for the DCI format of terminal up-downgoing schedule information, also transmit the DCI format of common control information.
8. realize the system that Downlink Control Information DCI sends, terminal is configured in transceiving 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 for being used the corresponding DCI format setting to transmit the up-downgoing schedule information for terminal on downlink component carrier according to component carrier index; For the described DCI format of terminal up-downgoing schedule information, comprise: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal; M DCI format corresponding to component carrier 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
mby component carrier index, determined;
Described terminal, for according to component carrier index, detects corresponding DCI format on described downlink component carrier.
9. a Downlink Control Information DCI dispensing device, terminal is configured in transceiving data at least one component carrier of same subframe, it is characterized in that, and this device comprises: coding unit and transmitting element, wherein,
Described coding unit is for being used the corresponding DCI format setting to transmit the up-downgoing schedule information for terminal on downlink component carrier according to component carrier index; For the described DCI format of terminal up-downgoing schedule information, comprise: for the subset of 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 is the quantity of configuration to the component carrier in same subframe of terminal; M DCI format corresponding to component carrier 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
mby component carrier index, determined;
Described transmitting element is used for the DCI format of terminal up-downgoing schedule information for transmission on downlink component carrier.
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