CN102316526B

CN102316526B - Transmission method and device

Info

Publication number: CN102316526B
Application number: CN201110295576.1A
Authority: CN
Inventors: 吴欣; 戴博; 夏树强; 左志松
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-09-29
Filing date: 2011-09-29
Publication date: 2018-01-23
Anticipated expiration: 2031-09-29
Also published as: WO2012155753A1; CN102316526A

Abstract

The invention discloses a kind of transmission method and device, this method includes：Transmission mode X is set；Downlink Control Information is sent to user equipment by descending control information format corresponding to transmission mode X, wherein descending control information format includes at least one of：Descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.Also without the transmission mode design for the load needs for determining to reduce PDCCH in correlation technique, the invention provides such a transmission mode design, the reduction loaded by the design of this transmission mode and its corresponding PDCCH, PDCCH capacity can be lifted and reduce PDCCH blocking rate, facilitate practical application.

Description

Transmission method and device

Technical field

The present invention relates to the communications field, in particular to a kind of transmission method and device.

Background technology

Radio frames (radio frame) bag in Long Term Evolution (Long Term Evolution, referred to as LTE) system Include FDD (Frequency Division Duplex, referred to as FDD) pattern and time division duplex (Time Division Duplex, referred to as TDD) pattern frame structure.Fig. 1 is the frame structure schematic diagram according to the fdd mode of correlation technique, such as Fig. 1 Shown, the radio frames of one 10 milliseconds (ms) are 0.5ms by 20 length, time slot (slot) composition of numbering 0~19, time slot Subframe (subframe) i that 2i and 2i+1 composition length is 1ms.Fig. 2 is illustrated according to the frame structure of the tdd mode of correlation technique Figure, as shown in Fig. 2 10ms radio frames are made up of two a length of 5ms field (half frame), a field includes The subframe that 5 length are 1ms, subframe i are defined as 2 a length of 0.5ms time slot 2i and 2i+1.In above two frame structure, For standard cyclic prefix (Normal Cyclic Prefix, Normal CP), it is 66.7 micro- that a time slot, which includes 7 length, The symbol of second (us), wherein the CP length of first symbol is 5.21us, the length of remaining 6 symbol is 4.69us；For expanding Cyclic prefix (Extended Cyclic Prefix, Extended CP) is opened up, a time slot includes 6 symbols, all symbols CP length is 16.67us.

LTE version number corresponds to R8 (Release 8), and version number corresponding to its increase version is R9 (Release 9), And for LTE-Advance from now on, its version number is just R10 (Release 10).Following three kinds of descending things defined in LTE Manage control channel：Physical down control format instruction channel (Physical Control Format Indicator Channel, referred to as PCFICH)；Physical hybrid automatic repeat request indicator channel (Physical Hybrid Automatic RetransmissionRequest Indicator Channel, referred to as PHICH)；Physical Downlink Control Channel (Physical Downlink ControlChannel, referred to as PDCCH).

Wherein, the information of PCFICH carryings is used to indicate the OFDM that PDCCH is transmitted in a subframe The number of (Orthogonal Frequency Division Multiplexing, referred to as OFDM) symbol, the of subframe Sent in one OFDM symbol, place frequency location is true by system descending bandwidth and cell ID (Identity, referred to as ID) It is fixed.

PHICH is used for acknowledgement/non-acknowledgement (ACK/NACK) feedback information for carrying uplink transmission data.PHICH Number, time-frequency location can be as Physical Broadcast Channel (the Physical Broadcast of the descending carrier where PHICH Channel, referred to as PBCH) in system message and cell ID determine.

PDCCH is used for bearing downlink control information (Downlink Control Information, referred to as DCI), bag Include：Uplink and downlink schedule information, and uplink power control information.DCI form (DCI format) is divided into following several： DCIformat 0、DCI format 1、DCI format 1A、DCI format 1B、DCI format 1C、DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 3 and DCI Format3A etc.；Wherein：

DCI format 0 be used for indicate Physical Uplink Shared Channel (Physical Uplink Shared Channel, Referred to as PUSCH) scheduling；

DCI format 1、DCI format 1A、DCI format 1B、DCI format 1C、DCI format 1D Different mode for a PDSCH code words scheduling；

DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C are used for space division multiplexing Different mode；

DCI format 3, DCI format 3A are used for Physical Uplink Control Channel (Physical Uplink Control Channel, referred to as PUCCH) and PUSCH power control instruction different mode.

Further, wherein, the information field of DCI Format 1A transmission is as follows：

1 bit is used to select DCI Format 0 or DCI Format 1A；

1 bit is used to select localized virtual resource block (Localized Virtual Resource Block, to be referred to as LVRB) or distributed virtual resource block (Distributed Virtual Resource Block, referred to as DVRB) resource The method of salary distribution；Bit is used for resource block distribution (Resource Block Assignment), its In,Descending bandwidth is represented, is represented with the quantity of resource block (Resource Block, referred to as RB).

5 bits are used to indicate modulation coding mode (Modulation and Coding Scheme, referred to as MCS)；

In FDD system, 3 bits be used for hybrid automatic repeat-request (Hybrid Automatic Repeat-reQuest, Referred to as HARQ) enter number of passes；In TDD system, 4 bits enter number of passes for HARQ.

1 bit is used for new data instruction (New Data Indicator, referred to as NDI)；

2 bits are used to indicate redundancy versions (RV)；

2 bits for Physical Uplink Control Channel PUCCH transmitting power control (Transmit Power Control, Referred to as TPC)；

2 bits are used for descending distribution index (DAI), and this function only needs in the uplink-downlink configuration of TDD system, in FDD systems Need not in system；

16 bits are used for CRC (Cyclic Redundancy Check, referred to as CRC)；

The physical resource of physical downlink control channel PDCCH transmission is with control channel element (Control Channel Element, referred to as CCE) be unit, CCE size for 9 resource element groups (Resource Element Group, Referred to as REG), i.e. 36 resource elements (Resource Element), a PDCCH may take 1,2,4 or 8 CCE. These four PDCCH sizes for taking 1,2,4,8 CCE, using tree-shaped polymerization (Aggregration), that is, take 1 CCE PDCCH can be since any CCE positions；2 CCE PDCCH is taken since even number CCE positions；Take 4 CCE PDCCH since the CCE positions of 4 integral multiple；8 CCE PDCCH is taken since the CCE positions of 8 integral multiple.

Each aggregation level (Aggregration level) defines a search space (Search space), including public affairs The search space of (common) and user equipment (User Equipment, referred to as UE) proprietary (UE-Specific) are searched altogether Rope space.The CCE numbers of whole search space are accorded with as the OFDM shared by the control zone that PCFICH in each descending sub frame is indicated Number and PHICH group number determine.UE is in search space by the DCI format of residing transmission mode to all possible PDCCH code checks carry out blind Detecting.

UE is arranged to based on a kind of following transmission mode by high-level signaling semi-static (semi-statically) (transmission mode), connect according to the PDCCH of the search space of user equipment proprietary (UE-Specific) instruction Receive PDSCH data transfers：

Pattern 1：Single antenna port；(the Single-antenna port of port 0；port 0)

Pattern 2：Transmitting diversity (Transmit diversity)

Pattern 3：Open-Loop Spatial Multiplexing (Open-loop spatial multiplexing)

Pattern 4：Closed-Loop Spatial Multiplexing (Closed-loop spatial multiplexing)

Pattern 5：Multi-user's multiple-input and multiple-output (Multi-user MIMO)

Pattern 6：Closed loop Rank=1 precodings (Closed-loop Rank=1 precoding)

Mode 7：Single antenna port；(the Single-antenna port of port 5；port 5)

If UE is arranged to use Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network by high level TemporaryIdentifier, referred to as C-RNTI) scrambling CRC (Cyclical Redundancy Check, referred to as CRC) carry out PDCCH decodings, then UE should according to respective combination defined in table 1 come decode PDCCH and All related PDSCH：

The downlink transfer pattern of table 1, DCI format, the mapping table of search space and transmission plan

If UE is arranged to be entered with the CRC of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scramblings by high level Row PDCCH is decoded, then UE should decode PDCCH and all related PUSCH according to the respective combination defined in table 2：

The uplink transmission mode of table 2, DCI format, the mapping table of search space and transmission plan

Because LTE-Advanced networks are required to access LTE user, so its operational frequency bands needs to cover current LTE Frequency band, assignable continuous 100MHz spectral bandwidth is not present in this frequency range, so LTE-Advanced is needed The direct technology to be solved is the continuous component carrier frequency (frequency spectrum) by several distributions on different frequency bands (ComponentCarrier) it is aggregating using carrier aggregation (Carrier Aggregation) technology, forms LTE- The 100MHz bandwidth that Advanced can be used.I.e. for the frequency spectrum after aggregation, n component carrier frequency (frequency spectrum) is divided into, often Frequency spectrum in individual component carrier frequency (frequency spectrum) is continuous.

In LTE-Advanced future version Release 11, because the demand of user's access increases, original thing Reason down control channel PDCCH resource will be insufficient for new version requirement.Meanwhile in heterogeneous network (HeterogeneousNetworks) under scene, because different base station type has stronger interference, macro base station (Macro ENodeB) interference problem to micro-base station (Pico) and Home eNodeB (Home eNodeB) are to macro base station (Macro eNodeB) Interference problem needs to be well solved.So, reduce that PDCCH load will be for solving the above problems has efficacious prescriptions Case.

At present, do not determined also for reducing the PDCCH transmission mode design needed that loads, so as to be answered to actual With making troubles.

The content of the invention

For in correlation technique also without determine reduce PDCCH load need transmission mode design the problem of and The present invention is proposed, therefore, the invention provides a kind of transmission method and device, at least to solve the above problems.

To achieve these goals, according to an aspect of the invention, there is provided a kind of transmission method.

Included according to the transmission method of the present invention：Transmission mode X is set；Pass through descending control letter corresponding to transmission mode X Cease form and send Downlink Control Information to user equipment, wherein descending control information format includes at least one of：Descending control Information format 1A processed, descending control information format 0, descending control information format Y1, descending control information format Y2.

Preferably, in the case where transmission mode X is downlink transfer pattern, the Downlink Control Information under transmission mode X In, when the cyclic check code in down control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission is set Pattern X includes：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using Downlink Control Information Form 1A represents the transmission means of single antenna port or transmission diversity；Or in public search space, using descending control Information format 1A represents the transmission means of single antenna port or transmission diversity, in the proprietary search of user equipment that C-RNTI is defined In space, the transmission means of single antenna port or transmission diversity is represented using descending control information format Y1；Or public In the proprietary search space of user equipment that search space and C-RNTI are defined, single antenna is represented using descending control information format 1A Port or the transmission means of transmission diversity, in the proprietary search space of user equipment that C-RNTI is defined, using descending control Information format Y1 represents the transmission means of single antenna port or transmission diversity.

Preferably, in the case where transmission mode X is uplink transmission mode, the Downlink Control Information under transmission mode X In, when the cyclic check code in down control channel is scrambled using C-RNTI, set transmission mode X to include：In common search In the proprietary search space of user equipment that space and C-RNTI are defined, single antenna port is represented using descending control information format 0 Transmission means, in the proprietary search space of user equipment that C-RNTI is defined, using descending control information format Y2 represent close Annular space is multiplexed single layer transmission mode；Or in public search space, single antenna is represented using descending control information format 0 The transmission means of port, in the proprietary search space of user equipment that C-RNTI is defined, using descending control information format Y2 tables Show Closed-Loop Spatial Multiplexing single layer transmission mode；Or in public search space, represent single using descending control information format 0 The transmission means of antenna port, in the proprietary search space of user equipment that C-RNTI is defined, using descending control information format Y2 represents the transmission means of single antenna port.

Preferably, descending control information format Y1 information field includes at least one of or combination：Carrier wave instructions field, area Dividing DCI format 1A and 0 bit field, collection to neutralize, distributed virtual resource distributes selection bit, resource block is distributed, modulation is compiled Code mode, HARQ enter number of passes, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Control Channel, descending distribution Index, Sounding Reference Signal request；Descending control information format Y2 information field includes at least one of or combination：Carry Ripple instructions field, distinguish DCI format 1A and 0 bit field, frequency modulation selection bit, resource block distribution, modulation coding mode and Redundancy versions, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal, The cyclic shift of orthogonal sequence index, upper line index, descending distribution index, channel state information request, channel detection reference letter Number request, resource allocation type.

Preferably, in the case where transmission mode X is downlink transfer pattern, the Downlink Control Information under transmission mode X In, when the cyclic check code in down control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission is set Pattern X includes：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using Downlink Control Information Form 1A represents the transmission means of single antenna port or transmission diversity, in the proprietary search space of user equipment that C-RNTI is defined In, using the transmission means of descending control information format Y1 expression multilayer transmissions；Or in public search space, under Row control information form 1A represents the transmission means of single antenna port or transmission diversity, special in the user equipment that C-RNTI is defined Have in search space, the transmission means of multilayer transmission is represented using descending control information format Y1.

Preferably, in the case where transmission mode X is uplink transmission mode, the Downlink Control Information under transmission mode X In, when the cyclic check code in down control channel is scrambled using C-RNTI, set transmission mode X to include：In common search In the proprietary search space of user equipment that space and C-RNTI are defined, single antenna port is represented using descending control information format 0 Transmission means, in the proprietary search space of user equipment that C-RNTI is defined, using descending control information format Y2 represent close The transmission means of annular space multiplexing；Or in public search space, single antenna end is represented using descending control information format 0 The transmission means of mouth, in the proprietary search space of user equipment that C-RNTI is defined, represented using descending control information format Y2 The transmission means of Closed-Loop Spatial Multiplexing.

Preferably, descending control information format Y1 information field includes at least one of or combination：Carrier wave instructions field, money Source dispensing head, resource block distribution, the transmitting power control of Physical Uplink Control Channel, descending distribution index, HARQ enter number of passes, day Line port code disturbing identity and the number of plies, Sounding Reference Signal request, the modulation coding mode of transmission block one, transmission block one newly count According to the new data instruction of instruction, the redundancy versions of transmission block one, the modulation coding mode of transmission block two, transmission block two, transmission block Two redundancy versions；Descending control information format Y2 information field includes at least one of or combination：Carrier wave instructions field, resource Block distribution, the circulation of the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal, orthogonal sequence index move Position, upper line index, descending distribution index, channel state information request, Sounding Reference Signal request, resource allocation type, Precoding information and number of plies information, the modulation coding mode of transmission block one, the new data instruction of transmission block one, transmission block one it is superfluous Remaining version, the modulation coding mode of transmission block two, the new data instruction of transmission block two, the redundancy versions of transmission block two.

Preferably, in the case where transmission mode X is downlink transfer pattern, the Downlink Control Information under transmission mode X In, when the cyclic check code in down control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission is set Pattern X includes：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using Downlink Control Information Form 1A represents the transmission means of single antenna port or transmission diversity, wherein, port numbers are port 0, are defined in C-RNTI In the proprietary search space of user equipment, the transmission means of single antenna port, port numbers are represented using descending control information format Y1 For any one in port 7 and 8, it is either any one in port 7,8,9 and 10 or is fixed as port 7；Or in public affairs Altogether in search space, the transmission means of single antenna port or transmission diversity is represented using descending control information format 1A, wherein, Port numbers are port 0, in the proprietary search space of user equipment that C-RNTI is defined, are represented using descending control information format Y1 The transmission means of single antenna port, wherein, port numbers are any one in port 7 and 8, or to appoint in port 7,8,9 and 10 Meaning one, or it is fixed as port 7；Or in public search space, single antenna is represented using descending control information format 1A Port or the transmission means of transmission diversity, wherein, port numbers are port 0, in the proprietary search of user equipment that C-RNTI is defined In space, the transmission means of single antenna port or transmission diversity is represented using descending control information format Y1, wherein, port numbers For any one in port 7 and 8, it is either any one in port 7,8,9 and 10 or is fixed as port 7.

Preferably, descending control information format Y1 information field includes at least one of or combination：Carrier wave instructions field, money Source dispensing head, resource block distribution, the transmitting power control of Physical Uplink Control Channel, descending distribution index, HARQ enter number of passes, day Line port code disturbing identity and the number of plies, Sounding Reference Signal request, the modulation coding mode of transmission block one and/or new data refer to Show and/or redundancy versions；Or descending control information format Y1 information field includes at least one of or combination：Carrier wave refers to Show that number of passes, new data instruction, redundancy versions, physically are entered in domain, resource allocation head, resource block distribution, modulation coding mode, HARQ The transmitting power control of row control channel, descending distribution index.

Preferably, descending control information format Y1 load is identical with descending control information format Y2 load.

Preferably, when descending control information format Y1 load is identical with descending control information format Y2 load, under Row control information form Y1 information field includes the bit for distinguishing descending control information format Y1 and Y2 and addition bit, descending control Information format Y2 processed information field includes the bit for distinguishing descending control information format Y1 and Y2 and addition bit；

Preferably, in descending control information format Y1 or descending control information format Y2, the resource allocation ratio of use Spy includes at least one of：Resource allocation bit is ceil (log2 (NDL))+X bits, and wherein NDL is that downlink bandwidth is corresponding Physical resource block number, ceil (log2 (NDL)) is the original position of resource block, and X bits are the quantity of resource block, and X values are 1 Or 2 or 3；Only with the method for continuous resource distribution；During the method distributed using continuous resource, using resource grains subgroup sub Reason resource block is indicated as least unit, and the resource block quantity of distribution is the multiple for the resource block quantity that resource group includes； During using discontinuous resource allocation methods, expand resource block group size P value.

Preferably, in descending control information format Y1 or Y2, modulation coding mode bit number is 2,3,4 or 5.

To achieve these goals, according to another aspect of the present invention, there is provided a kind of transmitting device.

Included according to the transmitting device of the present invention：Setup module, for setting transmission mode X；Sending module, for passing through Descending control information format corresponding to transmission mode X sends Downlink Control Information, wherein Downlink Control Information lattice to user equipment Formula includes at least one of：Descending control information format 1A, descending control information format 0, descending control information format Y1, under Row control information form Y2.

The invention provides a kind of transmission mode design, by the design of this transmission mode and its corresponding The reduction of PDCCH loads, PDCCH capacity can be lifted and reduce PDCCH blocking rate, facilitate practical application.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the frame structure schematic diagram according to the fdd mode of correlation technique；

Fig. 2 is the frame structure schematic diagram according to the tdd mode of correlation technique；

Fig. 3 is the flow chart of transmission method according to embodiments of the present invention；

Fig. 4 is the structured flowchart of transmitting device according to embodiments of the present invention.

Embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The invention provides a kind of transmission method.Fig. 3 is the flow chart of transmission method according to embodiments of the present invention, is such as schemed Shown in 3, including steps S302 to step S304.

Step S302, transmission mode X is set.

Step S304, descending control is sent to user equipment by descending control information format corresponding to transmission mode X and believed Breath, wherein descending control information format includes at least one of：Descending control information format 1A, descending control information format 0, Descending control information format Y1, descending control information format Y2.

In correlation technique, the transmission mode design also without the load needs for determining to reduce PDCCH.The present invention is implemented Such a transmission mode design is provided in example, design and its corresponding PDCCH by this transmission mode The reduction of load, PDCCH capacity can be lifted and reduce PDCCH blocking rate, facilitate practical application.

In order to more clearly describe above-mentioned transmission mode design, the present invention each provide five groups of detailed protocols and Its application method, is described separately below.

First group

In the case where transmission mode X is downlink transfer pattern, in the Downlink Control Information under transmission mode X, instantly When cyclic check code in row control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission mode X bags are set Include：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using descending control information format 1A Represent the transmission means of single antenna port or transmission diversity；Or in public search space, using Downlink Control Information lattice Formula 1A represents the transmission means of single antenna port or transmission diversity, in the proprietary search space of user equipment that C-RNTI is defined In, using descending control information format Y1 expression single antenna ports or the transmission means of transmission diversity；Or in common search In the proprietary search space of user equipment that space and C-RNTI are defined, single antenna port is represented using descending control information format 1A Or the transmission means of transmission diversity, in the proprietary search space of user equipment that C-RNTI is defined, using Downlink Control Information Form Y1 represents the transmission means of single antenna port or transmission diversity.

In the case where transmission mode X is uplink transmission mode, in the Downlink Control Information under transmission mode X, instantly When cyclic check code in row control channel is scrambled using C-RNTI, transmission mode X is set to include：In public search space and C- In the proprietary search space of user equipment that RNTI is defined, the transmission side of single antenna port is represented using descending control information format 0 Formula, in the proprietary search space of user equipment that C-RNTI is defined, represent that closed loop space is answered using descending control information format Y2 With single layer transmission mode；Or in public search space, the biography of single antenna port is represented using descending control information format 0 Defeated mode, in the proprietary search space of user equipment that C-RNTI is defined, represent that closed loop is empty using descending control information format Y2 Between be multiplexed single layer transmission mode；Or in public search space, single antenna port is represented using descending control information format 0 Transmission means, in the proprietary search space of user equipment that C-RNTI is defined, represent single using descending control information format Y2 The transmission means of antenna port.

Second group

In the case where transmission mode X is downlink transfer pattern, in the Downlink Control Information under transmission mode X, instantly When cyclic check code in row control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission mode X bags are set Include：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using descending control information format 1A The transmission means of single antenna port or transmission diversity is represented, in the proprietary search space of user equipment that C-RNTI is defined, is adopted The transmission means of multilayer transmission is represented with descending control information format Y1；Or in public search space, using descending control Information format 1A represents the transmission means of single antenna port or transmission diversity, in the proprietary search of user equipment that C-RNTI is defined In space, the transmission means of multilayer transmission is represented using descending control information format Y1.

In the case where transmission mode X is uplink transmission mode, in the Downlink Control Information under transmission mode X, instantly When cyclic check code in row control channel is scrambled using C-RNTI, transmission mode X is set to include：In public search space and C- In the proprietary search space of user equipment that RNTI is defined, the transmission side of single antenna port is represented using descending control information format 0 Formula, in the proprietary search space of user equipment that C-RNTI is defined, represent that closed loop space is answered using descending control information format Y2 Transmission means；Or in public search space, the transmission of single antenna port is represented using descending control information format 0 Mode, in the proprietary search space of user equipment that C-RNTI is defined, closed loop space is represented using descending control information format Y2 The transmission means of multiplexing.

3rd group

In the case where transmission mode X is downlink transfer pattern, in the Downlink Control Information under transmission mode X, instantly When cyclic check code in row control channel is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, transmission mode X bags are set Include：In the proprietary search space of user equipment that public search space and C-RNTI are defined, using descending control information format 1A The transmission means of single antenna port or transmission diversity is represented, wherein, port numbers are port 0, are set in the user that C-RNTI is defined In standby proprietary search space, the transmission means of single antenna port is represented using descending control information format Y1, port numbers are port 7 With 8 in any one, either be port 7,8,9 and 10 in any one or be fixed as port 7；It is or empty in common search Between in, the transmission means of single antenna port or transmission diversity is represented using descending control information format 1A, wherein, port numbers are Port 0, in the proprietary search space of user equipment that C-RNTI is defined, single antenna end is represented using descending control information format Y1 The transmission means of mouth, wherein, port numbers are any one in port 7 and 8, or are any one in port 7,8,9 and 10, or Person is fixed as port 7；Or in public search space, using descending control information format 1A represent single antenna port or The transmission means of transmission diversity, wherein, port numbers are port 0, in the proprietary search space of user equipment that C-RNTI is defined, are adopted The transmission means of single antenna port or transmission diversity is represented with descending control information format Y1, wherein, port numbers are the He of port 7 Any one in 8 is either any one in port 7,8,9 and 10 or is fixed as port 7.

The implementation process of the embodiment of the present invention is described in detail below in conjunction with example.

Embodiment one

When transmission mode X is downlink transfer pattern, in the Downlink Control Information under transmission mode X, when descending control letter When cyclic check code in road is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI：

In the proprietary search space of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI are defined In, using descending control information format DCI Format 1A expression single antenna ports or the transmission means of transmission diversity；In C- In the proprietary search space of user equipment that RNTI is defined, the transmission side of transmission diversity is represented using descending control information format Y1 Formula.As shown in table 3：

The downlink transfer pattern of table 3, DCI format, the mapping table one of search space and transmission plan

The descending control information format Y1 is the Downlink Control Information lattice for the load for reducing descending control information format 1A Formula.Specifically, change descending control information format 1A resource allocation bit and modulation coding mode bit, and delete Format 0/1A distinguish bit.

When transmission mode X is uplink transmission mode, in the Downlink Control Information under transmission mode X, when descending control When cyclic check code in channel processed is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI：

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port is represented using descending control information format DCI Format 0；Defined in C-RNTI In the proprietary search space of user equipment, the transmission means of single antenna port is represented using descending control information format Y2.Such as the institute of table 4 Show：

The uplink transmission mode of table 4, DCI format, the mapping table one of search space and transmission plan

The descending control information format Y2 is the Downlink Control Information lattice for the load for reducing descending control information format 0 Formula.Specifically, change the resource allocation bit and modulation coding mode bit of descending control information format 0, and delete Format 0/1A distinguish bit.

The information field that descending control information format Y1 is included is as follows：

Carrier wave instructions field, the bit field for distinguishing DCI format 1A and 0, collection neutralize distributed virtual resource distribution selection Bit, resource block distribution, modulation coding mode, HARQ enter number of passes, new data instruction, redundancy versions, Physical Uplink Control Channel Transmitting power control, descending distribution index (only have in fdd) and Sounding Reference Signal (SRS) ask.

The information field that descending control information format Y2 is included is as follows：

Carrier wave instructions field, the bit field for distinguishing DCI format 1A and 0, frequency modulation selection bit, resource block distribution, modulation Coded system and redundancy versions, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Shared Channel, proprietary solution Tune reference signal (DMRS) and the cyclic shift of orthogonal sequence index (OCC), upper line index, descending distribution index are (only in fdd Have), channel condition information (CSI) request, Sounding Reference Signal (SRS) request and resource allocation type.

Wherein, in descending control information format Y1 or Y2, the resource allocation bit used is following at least one side Method：

(1) to be distributed for up or downlink resource, resource allocation bit is ceil (log2 (NDL))+1 bit, or Ceil (log2 (NDL))+2 bits, NDL are physical resource block number corresponding to downlink bandwidth；Ceil (log2 (NDL)) represents resource The original position of block, 1 bit or 2 bits are used to representing the quantity of resource block, such as 2 bits represent the quantity of resource block be 1,2, 3 or 4.

(2) method for downlink resource distribution using the distribution of type 2 (type 2) continuous resource；

(3) method for downlink resource distribution using the distribution of type 2 (type 2) continuous resource, while use resource particle Group (resource element group, referred to as REG) replaces physical resource fast (physical resource block, letter Referred to as PRB) it is used as least unit；

(4) distributed for up or downlink resource, expand resource block group size (resource block group size)P.When resource block quantity is less than 10 as corresponding to when downlink bandwidth, P size is 2 or 3.

In descending control information format Y1 or Y2, modulation coding mode (Modulation and Coding Scheme, Referred to as MCS) bit number be 2,3 or 4, be served only for accordingly represent QPSK (QPSK) modulation system.Such as table 5 Shown in, MCS bit numbers are 3：

Table 5MCS, order of modulation and TBS mapping table

MCS indexes I_MCS	Order of modulation Q_m	TBS indexes I_TBS
			0	2	0
1	2	1
			2	2	2
3	2	3
			4	2	4
5	2	5
			6	2	6
7	2	7

Embodiment two

When transmission mode X is downlink transfer pattern, in the Downlink Control Information under transmission mode X, when descending control When cyclic check code in channel processed is scrambled using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI：

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port or transmission diversity is represented using descending control information format DCI Format 1A； In the proprietary search space of user equipment that C-RNTI is defined, the transmission side of multilayer transmission is represented using descending control information format Y1 Formula.As shown in table 6：

The downlink transfer pattern of table 6, DCI format, the mapping table two of search space and transmission plan

The descending control information format Y1 is the Downlink Control Information lattice for the load for reducing descending control information format 2C Formula.Specifically, descending control information format 2C resource allocation bit and modulation coding mode bit is changed.

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port is represented using descending control information format DCI Format 0；Defined in C-RNTI In the proprietary search space of user equipment, the transmission means of Closed-Loop Spatial Multiplexing is represented using descending control information format Y2.Such as table 7 Shown in：

The uplink transmission mode of table 7, DCI format, the mapping table two of search space and transmission plan

The descending control information format Y2 is the Downlink Control Information lattice for the load for reducing descending control information format 4 Formula.Specifically, the resource allocation bit and modulation coding mode bit of descending control information format 4 are changed.

Carrier wave instructions field, resource allocation head, resource block distribution, the transmitting power control, descending of Physical Uplink Control Channel Distribution index (only having in fdd), HARQ enter number of passes, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) Request, the instruction of the modulation coding mode of transmission block one, new data, redundancy versions and the modulation coding mode of transmission block two, newly number According to instruction, redundancy versions.

Carrier wave instructions field, resource block distribution, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal And the orthogonal sequence index cyclic shift of (OCC), upper line index, descending distribution index (only having in fdd), channel shape (DMRS) State information (CSI) request, Sounding Reference Signal (SRS) request, resource allocation type, precoding information and number of plies information, The modulation coding mode of transmission block one, new data instruction, modulation coding mode, the new data of redundancy versions and transmission block two refer to Show, redundancy versions.

For the distribution of up or downlink resource, resource allocation bit is ceil (log2 (NDL))+1 bit, or ceil (log2 (NDL))+2 bits, NDL are physical resource block number corresponding to downlink bandwidth；Ceil (log2 (NDL)) represents resource block Original position, 1 bit or 2 bits are used to representing the quantity of resource block, such as 2 bits represent the quantity of resource block for 1,2,3 or 4。

Method for downlink resource distribution using the distribution of type 2 (type 2) continuous resource；

Method for downlink resource distribution using the distribution of type 2 (type 2) continuous resource, while with resource grains subgroup (REG, resource element group) replaces physical resource fast (PRB, physical resource block) to be used as Least unit；

For the distribution of up or downlink resource, expand resource block group size (resource block group size) P.When resource block quantity is less than 10 as corresponding to when downlink bandwidth, P size is 2 or 3.

For descending control information format Y1, if any one in method 1-3, resource allocation head (Resource Allocationheader) bit is 0 bit.

In descending control information format Y1 or Y2, modulation coding mode (Modulation and Coding Scheme, MCS) bit number is 2,3 or 4, is served only for representing the modulation system of QPSK (QPSK) accordingly.Such as institute in table 5 Show.

Embodiment three

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port or transmission diversity is represented using descending control information format DCI Format 1A； In the proprietary search space of user equipment that C-RNTI is defined, single layer transmission (or Dan Tian is represented using descending control information format Y1 Line end mouth) transmission means, port numbers are any one in port 7 and 8, or are any one in port 7,8,9 and 10, or Person is fixed as port 7.As shown in table 8：

The downlink transfer pattern of table 8, DCI format, the mapping table three of search space and transmission plan

The descending control information format Y1 is descending control information format 2C, wherein antenna port, scrambler identity and layer Number can use 0,1 or 2 bits.When using 0 bit, antenna port is fixed as port 7,；When using 1 bit, this 1 Bit be used to distinguishing port's 7 or, or for distinguishing port 7 and 8, it is fixed；When using 2 bit, for distinguishing antenna Port port 7 or 8, and or, as shown in table 9；When using 3 bit, as shown in table 10.Meanwhile only comprising a biography Defeated piece of modulation coding mode, new data instruction and redundancy version information domain.

Or the descending control information format Y1 is reduction descending control information format 2C or Downlink Control Information lattice The descending control information format of the load of formula 1.Specifically, descending control information format 2C resource allocation bit and modulation is changed Coded system bit, and modulation coding mode (MCS), new data instruction (New Data only comprising a transmission block Indicator, NDI) and redundancy versions (Redundancy Version, RV) bit, for antenna port, scrambler identity and layer Number uses 0,1,2 or 3 bits；

Or change the resource allocation bit and modulation coding mode bit of descending control information format 1.

The mapping table one of the antenna port of table 9, scrambler identity and the number of plies and information

Antenna port, scrambler identity and the number of plies	Information
		0	1 layer, port 7, nSCID=0
1	1 layer, port 7, nSCID=1
		2	1 layer, port 8, nSCID=0
3	1 layer, port 8, nSCID=1

The mapping table two of the antenna port of table 10, scrambler identity and the number of plies and information

Antenna port, scrambler identity and the number of plies	Information
		0	Maximum 2 layers of transmission, port 7, nSCID=0
1	Maximum 2 layers of transmission, port 7, nSCID=1
		2	Maximum 2 layers of transmission, port 8, nSCID=0
3	Maximum 2 layers of transmission, port 8, nSCID=1
		4	Maximum 4 layers of transmission, port 7, nSCID=0
5	Maximum 4 layers of transmission, port 8, nSCID=0
		6	Maximum 4 layers of transmission, port 9, nSCID=0
7	Maximum 4 layers of transmission, port 10, nSCID=0

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port is represented using descending control information format DCI Format 0；Defined in C-RNTI In the proprietary search space of user equipment, the transmission of single layer transmission (or single antenna port) is represented using descending control information format Y2 Mode.As shown in table 11：

The uplink transmission mode of table 11, DCI format, the mapping table three of search space and transmission plan

Or only in the proprietary search space of user equipment that C-RNTI is defined, using descending control information format Y2 tables Show the transmission means of single antenna port.As shown in table 6.

The descending control information format Y2 is the Downlink Control Information lattice for the load for reducing descending control information format 4 Formula.Specifically, change the resource allocation bit and modulation coding mode bit of descending control information format 4, and only include one Modulation coding mode (MCS) and new data instruction (New Data Indicator, NDI) bit of individual transmission block, for prelisting Code and the number of plies use 3 bits in 2 antenna, use 5 bits during 4 antenna, as shown in Table 12.

Table 12Bit field mapped to index and Message mapping tables

Bit field mapped to index	Message
		0	1 layer：TPMI=0
1	1 layer：TPMI=1
		…	…
23	1 layer：TPMI=23
		24-31	It is reserved

Carrier wave instructions field, resource allocation head, resource block distribution, the transmitting power control, descending of Physical Uplink Control Channel Distribution index (only having in fdd), HARQ enter number of passes, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) Request, the instruction of the modulation coding mode of transmission block one, new data and redundancy versions.Wherein, antenna port scrambler identity and the number of plies Bit is 0,1 or 2 bits.

Or carrier wave instructions field, resource allocation head, resource block distribution, modulation coding mode, HARQ enter number of passes, new data Instruction, redundancy versions, the transmitting power control of Physical Uplink Control Channel and descending distribution index (only having in fdd).

Carrier wave instructions field, resource block distribution, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal And the orthogonal sequence index cyclic shift of (OCC), upper line index, descending distribution index (only having in fdd), channel shape (DMRS) State information (CSI) request, Sounding Reference Signal (SRS) request, resource allocation type, precoding information and number of plies information, Modulation coding mode, new data instruction, the redundancy versions of transmission block one.

Wherein, in descending control information format Y1 or Y2, the resource allocation bit used is following at least one method：

Resource allocation bit is ceil (log2 (NDL))+1 bit, or ceil (log2 (NDL))+2 bits, under NDL is Physical resource block number corresponding to row bandwidth；Ceil (log2 (NDL)) represents the original position of resource block, and 1 bit or 2 bits are used In the quantity for representing resource block, such as 2 bits represent that the quantity of resource block is 1,2,3 or 4.

Only with the method for continuous resource distribution；

During the method distributed using continuous resource, replaced with resource grains subgroup (REG, resource element group) Physical resource fast (PRB, physical resource block) is used as least unit；Using discontinuous resource allocation methods When, expand resource block group size (resource block group size) P.The resource block quantity as corresponding to when downlink bandwidth During less than 10, P size is 2 or 3.

During the method distributed using continuous resource, least unit is used as by the use of PRB；During using discontinuous resource allocation methods, Resource block group size P is not expanded.

In descending control information format Y1 or Y2, modulation coding mode (Modulation and Coding Scheme, MCS) bit number is 2,3,4 or 5.

Example IV

In public search space, single antenna port or transmission are represented using descending control information format DCI Format The transmission means of diversity；In the proprietary search space of user equipment that Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) defines, adopt Z1 transmission means is represented with descending control information format Y1, Z1 is the one or more in following transmission means：

Transmission diversity

Single layer transmission (single antenna port)

Most 8 layers of transmission (the layer transmission of up to 8), port 7- ports 14

As shown in table 13：

The downlink transfer pattern of table 13, DCI format, the mapping table four of search space and transmission plan

The descending control information format Y1 is the descending control letter for the load for reducing descending control information format 1A or 2C Cease form.Specifically, descending control information format 1A or 2C resource allocation bit and modulation coding mode bit are changed.Or While above-mentioned resource allocation and modulation coding mode bit is changed, increase N number of 0 bit, N is if Downlink Control Information lattice When formula Y1 load is less than Y2, their load difference number；Increase by 1 bit to be used to distinguish transmission diversity and closed loop space is answered Transmission means；Increase by 1 bit to be used to distinguish descending control information format Y1 and Y2.

In public search space, single antenna port or biography are represented using descending control information format DCI Format 0 The transmission means of transmission diversity；In the proprietary search space of user equipment that Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) defines, Z2 transmission means is represented using descending control information format Y2, Z1 is the one or more in following transmission means：

Single layer transmission (single antenna port)

Closed-Loop Spatial Multiplexing

As shown in table 14.

The uplink transmission mode of table 14, DCI format, the mapping table four of search space and transmission plan

The descending control information format Y2 is the Downlink Control Information for the load for reducing descending control information format 0 or 4 Form.Specifically, the resource allocation bit and modulation coding mode bit of descending control information format 0 or 4 are changed.Or changing While becoming above-mentioned resource allocation and modulation coding mode bit, increase N number of 0 bit, N is if descending control information format Y2 Load when be less than Y1, their load difference number；Increase by 1 bit to be used to distinguish single antenna port and Closed-Loop Spatial Multiplexing Transmission means；Increase by 1 bit to be used to distinguish descending control information format Y1 and Y2.

Carrier wave instructions field, resource allocation head, resource block distribution, the transmitting power control, descending of Physical Uplink Control Channel Distribution index (only having in fdd), HARQ enter number of passes, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) Request, the instruction of the modulation coding mode of transmission block one, new data, redundancy versions and the modulation coding mode of transmission block two, newly number According to instruction, redundancy versions；Or include again：Distinguish descending control information format Y1 and Y2 bit and addition bit (padding)。

Or：

Carrier wave instructions field, collection neutralize distributed virtual resource distribution selection bit, resource block distribution, modulation coding mode, HARQ enters number of passes, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Control Channel, descending distribution index (only Have in fdd) and Sounding Reference Signal (SRS) request；Or include again：Distinguish descending control information format Y1 and Y2 Bit and addition bit (padding).

Carrier wave instructions field, resource block distribution, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal And the orthogonal sequence index cyclic shift of (OCC), upper line index, descending distribution index (only having in fdd), channel shape (DMRS) State information (CSI) request, Sounding Reference Signal (SRS) request, resource allocation type, precoding information and number of plies information, The modulation coding mode of transmission block one, new data instruction, modulation coding mode, the new data of redundancy versions and transmission block two refer to Show, redundancy versions；Or include again：Distinguish descending control information format Y1 and Y2 bit and addition bit (padding).

Or：

Carrier wave instructions field, frequency modulation selection bit, resource block distribution, modulation coding mode and redundancy versions, new data instruction, Redundancy versions, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal (DMRS) and orthogonal sequence index (OCC) cyclic shift, upper line index, descending distribution index (only having in fdd), channel condition information (CSI) request, channel Detection reference signal (SRS) is asked and resource allocation type；Or include again：Distinguish descending control information format Y1 and Y2 ratio Special and addition bit (padding).

In descending control information format Y1 or Y2, the resource allocation bit used is following at least one method：

Only with the method for continuous resource distribution；

For descending control information format Y1, if the resource allocation methods using type 2, it is possible to delete resource point With head (Resource allocation header) bit.

Embodiment five

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port or transmission diversity is represented using descending control information format DCI Format 1A, such as Shown in table 15：

The downlink transfer pattern of table 15, DCI format, the mapping table five of search space and transmission plan

It is empty in the proprietary search of user equipment that public search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) define Between in, the transmission means of single antenna port is represented using descending control information format DCI Format 0；Defined in C-RNTI In the proprietary search space of user equipment, the transmission means of single antenna port is represented using descending control information format Y2.Such as table 16 It is shown：

The uplink transmission mode of table 16, DCI format, the mapping table five of search space and transmission plan

It should be noted that can be in such as one group of computer executable instructions the flow of accompanying drawing illustrates the step of Performed in computer system, although also, show logical order in flow charts, in some cases, can be with not The order being same as herein performs shown or described step.

The embodiments of the invention provide a kind of transmitting device, the transmitting device can be used for realizing above-mentioned transmission method.Fig. 4 It is the structured flowchart of transmitting device according to embodiments of the present invention, as shown in figure 4, including setup module 42 and sending module 44. Its structure is described in detail below.

Setup module 42, for setting transmission mode X；Sending module 44, setup module 42 is connected to, is set for passing through Descending control information format sends Downlink Control Information to user equipment corresponding to the transmission mode X that module 42 is set, wherein under Row control information form includes at least one of：Descending control information format 1A, descending control information format 0, descending control Information format Y1, descending control information format Y2.

It should be noted that the transmitting device described in device embodiment corresponds to above-mentioned embodiment of the method, its is specific Implementation process detailed description had been carried out in embodiment of the method, will not be repeated here.

In summary, according to the abovementioned embodiments of the present invention, there is provided a kind of transmission method and device.The invention provides A kind of transmission mode design, the reduction loaded by the design of this transmission mode and its corresponding PDCCH can be with Lift PDCCH capacity and reduce PDCCH blocking rate, facilitate practical application.In addition, in LTE-Advanced systems, this The PDCCH of low-load corresponding to kind of transmission mode, which can solve number of users, to be increased and the problems such as serious interference.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific Hardware and software combines.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

A kind of 1. transmission method, it is characterised in that including：

Transmission mode X is set；

Downlink Control Information, wherein institute are sent to user equipment by descending control information format corresponding to the transmission mode X Stating descending control information format includes：Descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2；

Wherein, in descending control information format Y1 or descending control information format Y2, the resource allocation bit of use includes At least one of：The resource allocation bit is ceil (log2 (NDL))+x bits, and wherein NDL is corresponding to downlink bandwidth Physical resource block number, ceil (log2 (NDL)) are the original positions of resource block, and x bits are the quantity of resource block, x values be 1 or 2 or 3；Only with the method for continuous resource distribution；During the method distributed using continuous resource, managed using resource grains subgroup sub Resource block is indicated as least unit, and the resource block quantity of distribution is the multiple for the resource block quantity that resource group includes；Adopt During with discontinuous resource allocation methods, expand resource block group size P value.
2. according to the method for claim 1, it is characterised in that in the transmission mode X be the situation of downlink transfer pattern Under, in the Downlink Control Information under the transmission mode X, when the cyclic check code in down control channel uses cell When Radio Network Temporary Identifier C-RNTI is scrambled, transmission mode X is set to include：

In the proprietary search space of user equipment that public search space and the C-RNTI are defined, believed using the descending control Cease the transmission means that form 1A represents single antenna port or transmission diversity；

Or in public search space, single antenna port or transmission point are represented using the descending control information format 1A The transmission means of collection, in the proprietary search space of user equipment that the C-RNTI is defined, using the Downlink Control Information lattice Formula Y1 represents the transmission means of single antenna port or transmission diversity；

Or in the proprietary search space of user equipment that public search space and the C-RNTI are defined, using described descending Control information form 1A represents the transmission means of single antenna port or transmission diversity, in the user equipment that the C-RNTI is defined In proprietary search space, single antenna port or the transmission side of transmission diversity are represented using the descending control information format Y1 Formula.
3. according to the method for claim 1, it is characterised in that in the transmission mode X be the situation of uplink transmission mode Under, in the Downlink Control Information under the transmission mode X, when the cyclic check code in down control channel uses C- When RNTI is scrambled, transmission mode X is set to include：

In the proprietary search space of user equipment that public search space and the C-RNTI are defined, believed using the descending control The transmission means that form 0 represents single antenna port is ceased, in the proprietary search space of user equipment that the C-RNTI is defined, is used The descending control information format Y2 represents Closed-Loop Spatial Multiplexing single layer transmission mode；

Or in public search space, the transmission means of single antenna port is represented using the descending control information format 0, In the proprietary search space of user equipment that the C-RNTI is defined, represent that closed loop is empty using the descending control information format Y2 Between be multiplexed single layer transmission mode；

Or in public search space, the transmission means of single antenna port is represented using the descending control information format 0, In the proprietary search space of user equipment that the C-RNTI is defined, single antenna is represented using the descending control information format Y2 The transmission means of port.
4. according to the method in claim 2 or 3, it is characterised in that

The information field of the descending control information format Y1 includes at least one of or combination：Carrier wave instructions field, distinguish DCI Format 1A and 0 bit field, collection neutralize distributed virtual resource distribution selection bit, resource block distribution, modulating-coding side Formula, HARQ enter number of passes, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Control Channel, descending distribution rope Draw, Sounding Reference Signal request；

The information field of the descending control information format Y2 includes at least one of or combination：Carrier wave instructions field, distinguish DCI Format 1A and 0 bit field, frequency modulation select bit, resource block distribution, modulation coding mode and redundancy versions, new data to refer to Show, the transmitting power control of redundancy versions, Physical Uplink Shared Channel, proprietary demodulated reference signal, orthogonal sequence index follow Ring displacement, upper line index, descending distribution index, channel state information request, Sounding Reference Signal request, resource allocation class Type.
5. according to the method for claim 1, it is characterised in that in the transmission mode X be the situation of downlink transfer pattern Under, in the Downlink Control Information under the transmission mode X, when the cyclic check code in down control channel uses cell When Radio Network Temporary Identifier C-RNTI is scrambled, transmission mode X is set to include：

In the proprietary search space of user equipment that public search space and the C-RNTI are defined, believed using the descending control The transmission means that form 1A represents single antenna port or transmission diversity is ceased, is searched the user equipment that the C-RNTI is defined is proprietary In rope space, the transmission means of multilayer transmission is represented using the descending control information format Y1；

Or in public search space, single antenna port or transmission point are represented using the descending control information format 1A The transmission means of collection, in the proprietary search space of user equipment that the C-RNTI is defined, using the Downlink Control Information lattice Formula Y1 represents the transmission means of multilayer transmission.
6. according to the method for claim 1, it is characterised in that in the transmission mode X be the situation of uplink transmission mode Under, in the Downlink Control Information under the transmission mode X, when the cyclic check code in down control channel uses C- When RNTI is scrambled, transmission mode X is set to include：

In the proprietary search space of user equipment that public search space and the C-RNTI are defined, believed using the descending control The transmission means that form 0 represents single antenna port is ceased, in the proprietary search space of user equipment that the C-RNTI is defined, is used The descending control information format Y2 represents the transmission means of Closed-Loop Spatial Multiplexing；

Or in public search space, the transmission means of single antenna port is represented using the descending control information format 0, In the proprietary search space of user equipment that the C-RNTI is defined, represent that closed loop is empty using the descending control information format Y2 Between the transmission means that is multiplexed.
7. the method according to claim 5 or 6, it is characterised in that

The information field of the descending control information format Y1 includes at least one of or combination：Carrier wave instructions field, resource allocation Head, resource block distribution, the transmitting power control of Physical Uplink Control Channel, descending distribution index, HARQ enter number of passes, antenna port Scrambler identity and the number of plies, Sounding Reference Signal request, the modulation coding mode of transmission block one, the new data of transmission block one refer to Show, the instruction of the new data of the redundancy versions of transmission block one, the modulation coding mode of transmission block two, transmission block two, transmission block two Redundancy versions；

The information field of the descending control information format Y2 includes at least one of or combination：Carrier wave instructions field, resource block point Match somebody with somebody, the transmitting power control of Physical Uplink Shared Channel, proprietary demodulated reference signal, orthogonal sequence index cyclic shift, on Line index, descending distribution index, channel state information request, Sounding Reference Signal request, resource allocation type, precoding Information and number of plies information, the modulation coding mode of transmission block one, the new data instruction of transmission block one, the redundancy version of transmission block one Sheet, the new data instruction of the modulation coding mode of transmission block two, transmission block two, the redundancy versions of transmission block two.
8. according to the method for claim 1, it is characterised in that in the transmission mode X be the situation of downlink transfer pattern Under, in the Downlink Control Information under the transmission mode X, when the cyclic check code in down control channel uses cell When Radio Network Temporary Identifier C-RNTI is scrambled, transmission mode X is set to include：

In the proprietary search space of user equipment that public search space and the C-RNTI are defined, believed using the descending control The transmission means that form 1A represents single antenna port or transmission diversity is ceased, wherein, port numbers are port 0, in the C-RNTI In the proprietary search space of user equipment of definition, the transmission side of single antenna port is represented using the descending control information format Y1 Formula, port numbers be port 7 and 8 in any one, either be port 7,8,9 and 10 in any one or be fixed as port 7；

Or in public search space, single antenna port or transmission point are represented using the descending control information format 1A The transmission means of collection, wherein, port numbers are port 0, in the proprietary search space of user equipment that the C-RNTI is defined, are used The descending control information format Y1 represents the transmission means of single antenna port, wherein, port numbers are any one in port 7 and 8 It is individual, either be port 7,8,9 and 10 in any one or be fixed as port 7；

Or in public search space, single antenna port or transmission point are represented using the descending control information format 1A The transmission means of collection, wherein, port numbers are port 0, in the proprietary search space of user equipment that the C-RNTI is defined, are used The descending control information format Y1 represents the transmission means of single antenna port or transmission diversity, wherein, port numbers are port 7 With 8 in any one, either be port 7,8,9 and 10 in any one or be fixed as port 7.
9. according to the method for claim 8, it is characterised in that descending control information format Y1 information field is included below extremely One of few or combination：Carrier wave instructions field, resource allocation head, resource block distribution, Physical Uplink Control Channel transmitting power control, Descending distribution index, HARQ enter number of passes, antenna port scrambler identity and the number of plies, Sounding Reference Signal request, transmission block one Modulation coding mode and/or new data instruction and/or redundancy versions；Or descending control information format Y1 information field bag Include at least one of or combination：Carrier wave instructions field, resource allocation head, resource block distribution, modulation coding mode, HARQ processes Number, new data instruction, redundancy versions, the transmitting power control of Physical Uplink Control Channel, descending distribution index.
10. according to the method for claim 1, it is characterised in that descending control information format Y1 load and descending control Information format Y2 load is identical.
11. according to the method for claim 10, it is characterised in that load and institute as the descending control information format Y1 State descending control information format Y2 load it is identical when, the information field of the descending control information format Y1, which includes, distinguishes descending control Information format Y1 and Y2 processed bit and addition bit, the information field of the descending control information format Y2, which includes, distinguishes descending control Information format Y1 and Y2 processed bit and addition bit.
12. according to the method for claim 1, it is characterised in that in descending control information format Y1 or Y2, modulation is compiled Code mode bit number is 2,3,4 or 5.
A kind of 13. transmitting device, it is characterised in that including：

Setup module, for setting transmission mode X；

Sending module, for sending descending control to user equipment by descending control information format corresponding to the transmission mode X Information processed, wherein the descending control information format includes：It is descending control information format 1A, descending control information format 0, descending Control information form Y1, descending control information format Y2；

Wherein, in descending control information format Y1 or descending control information format Y2, the resource allocation bit of use includes At least one of：The resource allocation bit is ceil (log2 (NDL))+x bits, and wherein NDL is corresponding to downlink bandwidth Physical resource block number, ceil (log2 (NDL)) are the original positions of resource block, and x bits are the quantity of resource block, x values be 1 or 2 or 3；Only with the method for continuous resource distribution；During the method distributed using continuous resource, managed using resource grains subgroup sub Resource block is indicated as least unit, and the resource block quantity of distribution is the multiple for the resource block quantity that resource group includes；Adopt During with discontinuous resource allocation methods, expand resource block group size P value.