CN102316526A

CN102316526A - Transmission method and device

Info

Publication number: CN102316526A
Application number: CN201110295576A
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: 2012-01-11
Anticipated expiration: 2031-09-29
Also published as: CN102316526B; WO2012155753A1

Abstract

The invention discloses a transmission method and a device. The method comprises the following steps of: setting a transmission mode X; sending downlink control information to user equipment through downlink control information format corresponding to the transmission mode X, wherein the downlink control information format comprises at least one element in the following elements: the downlink control information format 1A, the downlink control information format 0, the downlink control information format Y1 and the downlink control information format Y2. In the correlation technique, the transmission mode design scheme for reducing the load requirement of the physical downlink control channel (PDCCH) is also not determined. The invention provides the transmission mode design scheme, through the transmission mode design and the corresponding PDCCH load reduction, the capacity of the PDCCH can be improved, the blockage rate of the PDCCH can be reduced, and the practical application is convenient.

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

Long Term Evolution (Long Term Evolution; Abbreviating LTE as) radio frames (radio frame) in the system comprises FDD (Frequency Division Duplex; Abbreviate FDD as) frame structure of pattern and time division duplex (Time Division Duplex abbreviates TDD as) pattern.Fig. 1 is the frame structure sketch map according to the fdd mode of correlation technique; As shown in Figure 1; The radio frames of one 10 milliseconds (ms) is 0.5ms by 20 length, and the time slot (slot) of numbering 0～19 is formed, and it is subframe (subframe) i of 1ms that time slot 2i and 2i+1 form length.Fig. 2 is the frame structure sketch map according to the tdd mode of correlation technique; As shown in Figure 2; The radio frames of a 10ms is longly formed for the field of 5ms (half frame) by two, and a field comprises that 5 length are the subframe of 1ms, and subframe i is defined as 2 and longly is time slot 2i and the 2i+1 of 0.5ms.In above-mentioned two kinds of frame structures; For standard cyclic prefix (Normal Cyclic Prefix, Normal CP), the symbol that it is 66.7 microseconds (us) that time slot comprises 7 length; Wherein the CP length of first symbol is 5.21us, and the length of all the other 6 symbols is 4.69us; For extended cyclic prefix (Extended Cyclic Prefix, Extended CP), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.

The version number of LTE is corresponding to R8 (Release 8), and it increases the corresponding version number of version is R9 (Release 9), and for from now on LTE-Advance, its version number is R10 (Release 10) just.Following three kinds of downlink physical control channels have been defined among the LTE: physical down control format indicating channel (Physical Control Format Indicator Channel abbreviates PCFICH as); The automatic repeat requests indicating channel of physical mixed (Physical Hybrid Automatic RetransmissionRequest Indicator Channel abbreviates PHICH as); Physical Downlink Control Channel (Physical Downlink ControlChannel abbreviates PDCCH as).

Wherein, The PCFICH loaded information is used in reference to OFDM (the Orthogonal Frequency Division Multiplexing that is shown in transmission PDCCH in the sub-frame; Abbreviate OFDM as) number of symbol; On first OFDM symbol of subframe, send, the place frequency location is confirmed by system descending bandwidth and cell ID (Identity abbreviates ID as).

PHICH is used to carry acknowledgement/non-acknowledgement (ACK/NACK) feedback information of uplink transmission data.The number of PHICH, time-frequency position can be definite with sub-district ID by the system message in the Physical Broadcast Channel (Physical Broadcast Channel abbreviates PBCH as) of the descending carrier at PHICH place.

PDCCH is used for bearing downlink control information (Downlink Control Information abbreviates DCI as), comprising: uplink and downlink schedule information, and uplink power control information.The form of DCI (DCI format) is divided into following several kinds: 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 is used to indicate the scheduling of Physical Uplink Shared Channel (Physical Uplink Shared Channel abbreviates PUSCH as);

DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D are used for the different mode of a PDSCH code word scheduling;

DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C are used for the different mode of space division multiplexing;

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

Further, wherein, DCI Format 1A information transmitted territory is following:

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

1 bit is used to select the resource distribution mode of localized virtual resource block (Localized Virtual Resource Block abbreviates LVRB as) or distributed virtual resource block (Distributed Virtual Resource Block abbreviates DVRB as);

bit is used for resource block assignments (Resource Block Assignment); Wherein, The descending bandwidth of

expression; Quantity with Resource Block (Resource Block abbreviates RB as) is represented.

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

In the FDD system, 3 bits are used to mix automatic repeat requests (Hybrid Automatic Repeat-reQuest abbreviates HARQ as) process number; In the TDD system, 4 bits are used for HARQ process number.

1 bit is used for new data indication (New Data Indicator abbreviates NDI as);

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

2 bits are used for the through-put power control (Transmit Power Control abbreviates TPC as) of Physical Uplink Control Channel PUCCH;

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

16 bits are used for CRC (Cyclic Redundancy Check abbreviates CRC as);

The physical resource of physical downlink control channel PDCCH transmission is with control channel element (Control Channel Element; Abbreviate CCE as) be unit; The size of a CCE is 9 resource element groups (Resource Element Group; Abbreviate REG as), i.e. 36 resource elements (Resource Element), a PDCCH possibly take 1,2,4 or 8 CCE.These four kinds of PDCCH sizes for taking 1,2,4,8 CCE adopt tree-shaped polymerization (Aggregration), and the PDCCH that promptly takies 1 CCE can begin from any CCE position; The PDCCH that takies 2 CCE begins from even number CCE position; The CCE position of the integral multiple of the PDCCH that takies 4 CCE since 4; The CCE position of the integral multiple of the PDCCH that takies 8 CCE since 8.

Each polymerization rank (Aggregration level) definition search volume (Search space) comprises the search volume of public (common) and the search volume of subscriber equipment (User Equipment abbreviates UE as) proprietary (UE-Specific).OFDM symbolic number that the controlled area that the CCE number of whole search volume is indicated by PCFICH in each descending sub frame is shared and the group number of PHICH are confirmed.UE DCI format by transmission mode of living in the search volume carries out blind Detecting to all possible PDCCH code checks.

UE is set to based on following a kind of transmission mode (transmission mode) through high-level signaling semi-static (semi-statically), receives the PDSCH transfer of data according to the indication of the PDCCH of the search volume of subscriber equipment proprietary (UE-Specific):

Pattern 1: single antenna port; Port 0 (Single-antenna port; Port 0)

Pattern 2: transmit diversity (Transmit diversity)

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

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

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

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

Mode 7: single antenna port; Port 5 (Single-antenna port; Port 5)

If UE is set to Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network TemporaryIdentifier by high level; Abbreviate C-RNTI as) CRC (the Cyclical Redundancy Check of scrambling; Abbreviate CRC as) carry out PDCCH decoding, then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of definition in the table 1:

The mapping table of table 1 downlink transfer pattern, DCI form, search volume and transmission plan

If UE is set to carry out PDCCH decoding with the CRC of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling by high level, then UE should be according to the respective sets incompatible decoding PDCCH PUSCH relevant with all of definition in the table 2:

The mapping table of table 2 uplink transmission mode, DCI form, search volume and transmission plan

Because the LTE-Advanced network needs to insert LTE user; So its operational frequency bands need cover present LTE frequency band; On this frequency range, there has not been the spectral bandwidth of assignable continuous 100MHz; So the direct technology that LTE-Advanced need solve is (ComponentCarrier) to adopt carrier wave to assemble (Carrier Aggregation) technological polymerization several continuous component carrier frequency (frequency spectrum) that are distributed on the different frequency range, forms the operable 100MHz bandwidth of LTE-Advanced.Promptly for the frequency spectrum after assembling, be divided into n component carrier frequency (frequency spectrum), the frequency spectrum in each component carrier frequency (frequency spectrum) is continuous.

In the future version Release 11 of LTE-Advanced, because the Requirement Increases that the user inserts, original physical downlink control channel PDCCH resource will be not enough to satisfy new version requirement.Simultaneously; Under the scene of heterogeneous network (HeterogeneousNetworks); Because the different base station type all has stronger interference, macro base station (Macro eNodeB) need be well solved to macro base station (Macro eNodeB) interference problem to the interference problem and the Home eNodeB (Home eNodeB) of little base station (Pico).So, the load of reduction PDCCH will be the effective scheme that is used to address the above problem.

At present, also do not confirm for the transmission mode design of the need of load that reduces PDCCH, thereby make troubles to practical application.

Summary of the invention

Propose the present invention to the problem of the transmission mode design of the need of load that also confirm to reduce PDCCH in the correlation technique, for this reason, the invention provides a kind of transmission method and device, to address the above problem at least.

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

Transmission method according to the present invention comprises: transmission mode X is set; The descending control information format corresponding through transmission mode X sends Downlink Control Information to subscriber equipment, wherein descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.

Preferably; At transmission mode X is under the situation of downlink transfer pattern; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Perhaps; In the common search space; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity; Perhaps; In the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity.

Preferably; At transmission mode X is under the situation of uplink transmission mode; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling, transmission mode X is set comprises: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, adopt the transmission means of descending control information format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of single antenna port.

Preferably, the information field of descending control information format Y1 comprise following one of at least or combination: carrier wave indication territory, distinguish DCI format 1A and 0 bit field, concentrate and bit, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index, Sounding Reference Signal request are selected in the distributed virtual resource allocation; The information field of descending control information format Y2 comprise following one of at least or combination: carrier wave indication territory; Distinguish the bit field of DCI format 1A and 0; Frequency modulation is selected bit; Resource block assignments; Modulation coding mode and redundancy versions; The new data indication; Redundancy versions; The through-put power control of Physical Uplink Shared Channel; Proprietary demodulated reference signal; The cyclic shift of orthogonal sequence index; Last line index; Descending allocation index; The channel condition information request; The Sounding Reference Signal request; The resource allocation type.

Preferably; At transmission mode X is under the situation of downlink transfer pattern; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of multilayer transmission; Perhaps; In the common search space; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of multilayer transmission.

Preferably; At transmission mode X is under the situation of uplink transmission mode; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling, transmission mode X is set comprises: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, adopt the transmission means of descending control information format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing.

Preferably, the information field of descending control information format Y1 comprise following one of at least or combination: the new data of the redundancy versions of the modulation coding mode of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index, HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal request, transmission block one, the indication of transmission block one new data, transmission block one, the modulation coding mode of transmission block two, transmission block two is indicated, the redundancy versions of transmission block two; The information field of descending control information format Y2 comprise following one of at least or combination: carrier wave indication territory; Resource block assignments; The through-put power control of Physical Uplink Shared Channel; Proprietary demodulated reference signal; The cyclic shift of orthogonal sequence index; Last line index; Descending allocation index; The channel condition information request; The Sounding Reference Signal request; The resource allocation type; Precoding information and number of plies information; The modulation coding mode of transmission block one; The new data indication of transmission block one; The redundancy versions of transmission block one; The modulation coding mode of transmission block two; The new data indication of transmission block two; The redundancy versions of transmission block two.

Preferably, be under the situation of downlink transfer pattern at transmission mode X, in the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling; Transmission mode X is set to be comprised: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, employing descending control information format 1A representes the transmission means of single antenna port or transmission diversity, wherein; Port numbers is a port 0; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent that the transmission means of single antenna port, port numbers are in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7; Perhaps, in the common search space, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of single antenna port, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7; Perhaps, in the common search space, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7.

Preferably, the information field of descending control information format Y1 comprise following one of at least or combination: the modulation coding mode and/or the new data of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index, HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal request, transmission block one are indicated and/or redundancy versions; Perhaps, the information field of descending control information format Y1 comprise following one of at least or combination: carrier wave indication territory, resource allocation head, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index.

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

Preferably; When the load of descending control information format Y1 is identical with the load of descending control information format Y2; The information field of descending control information format Y1 comprises the bit and interpolation bit of distinguishing descending control information format Y1 and Y2, and the information field of descending control information format Y2 comprises the bit of distinguishing descending control information format Y1 and Y2 and adds bit;

Preferably; In descending control information format Y1 or descending control information format Y2; The resource allocation bit that adopts comprise following one of at least: resource allocation bit is ceil (log2 (NDL))+X bit, and wherein NDL is a downlink bandwidth corresponding physical number of resource blocks, and ceil (log2 (NDL)) is the original position of Resource Block; The X bit is the quantity of Resource Block, and the X value is 1 or 2 or 3; The method that only adopts continuous resource to distribute; When adopting the method that continuous resource distributes, adopt resource group alternative physical Resource Block to represent, the multiple of the Resource Block quantity that the Resource Block quantity of distribution comprises for the resource group as least unit; When adopting discontinuous resource allocation methods, enlarge the value of Resource Block group size P.

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

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

Transmitting device according to the present invention comprises: module is set, is used to be provided with transmission mode X; Sending module; Be used for sending Downlink Control Information to subscriber equipment through the corresponding descending control information format of transmission mode X, wherein descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.

The invention provides a kind of transmission mode design,, can promote the capacity of PDCCH and the blocking rate that reduces PDCCH, make things convenient for practical application through the design of this transmission mode and the reduction of its corresponding PDCCH load.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the frame structure sketch map according to the fdd mode of correlation technique;

Fig. 2 is the frame structure sketch map according to the tdd mode of correlation technique;

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

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

Embodiment

Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.

The invention provides a kind of transmission method.Fig. 3 is the flow chart according to the transmission method of the embodiment of the invention, and is as shown in Figure 3, comprises that following step S302 is to step S304.

Step S302 is provided with transmission mode X.

Step S304; The descending control information format corresponding through transmission mode X sends Downlink Control Information to subscriber equipment, wherein descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.

In the correlation technique, also confirm the transmission mode design of the need of load of reduction PDCCH.A kind of like this transmission mode design is provided in the embodiment of the invention,, can have promoted the capacity of PDCCH and the blocking rate that reduces PDCCH, made things convenient for practical application through the design of this transmission mode and the reduction of its corresponding PDCCH load.

In order more clearly to describe above-mentioned transmission mode design, the present invention provides five groups of detailed protocol and method for using thereof respectively, and is described respectively below.

First group

At transmission mode X is under the situation of downlink transfer pattern; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling; Transmission mode X is set to be comprised: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Perhaps; In the common search space; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity; Perhaps; In the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity.

At transmission mode X is under the situation of uplink transmission mode; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling; Transmission mode X is set to be comprised: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of single antenna port.

Second group

At transmission mode X is under the situation of downlink transfer pattern; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling; Transmission mode X is set to be comprised: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of multilayer transmission; Perhaps; In the common search space; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of multilayer transmission.

At transmission mode X is under the situation of uplink transmission mode; In the Downlink Control Information under transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling; Transmission mode X is set to be comprised: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing; Perhaps, in the common search space, adopt the transmission means of descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing.

The 3rd group

At transmission mode X is under the situation of downlink transfer pattern; In the Downlink Control Information under transmission mode X, when the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises: in the proprietary search volume of subscriber equipment of common search space and C-RNTI definition; Adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of single antenna port; Port numbers is in port 7 and 8 any one, perhaps is in port 7,8,9 and 10 any one, perhaps is fixed as port 7; Perhaps, in the common search space, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of single antenna port, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7; Perhaps, in the common search space, adopt descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7.

To combine instance that the implementation procedure of the embodiment of the invention is described in detail below.

Embodiment one

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

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI definition, adopt descending control information format DCI Format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of transmission diversity.As shown in table 3:

The mapping table one of table 3 downlink transfer pattern, DCI form, search volume and transmission plan

Said descending control information format Y1 is the descending control information format of the load of reduction descending control information format 1A.Particularly, change resource allocation bit and the modulation coding mode bit of descending control information format 1A, and deletion format 0/1A distinguishes bit.

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

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt the transmission means of descending control information format DCI Format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of single antenna port.As shown in table 4:

The mapping table one of table 4 uplink transmission mode, DCI form, search volume and transmission plan

Said descending control information format Y2 is the descending control information format of the load of reduction descending control information format 0.Particularly, change the resource allocation bit and the modulation coding mode bit of descending control information format 0, and deletion format 0/1A distinguishes bit.

The information field that descending control information format Y1 comprises is following:

Carrier wave indication territory, the bit field of distinguishing DCI format 1A and 0, concentrated and distributed virtual resource allocation selection bit, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index (only in FDD, having) and Sounding Reference Signal (SRS) request.

The information field that descending control information format Y2 comprises is following:

Carrier wave indication territory; Distinguish the bit field of DCI format 1A and 0; Frequency modulation is selected bit; Resource block assignments; Modulation coding mode and redundancy versions; The new data indication; Redundancy versions; The through-put power control of Physical Uplink Shared Channel; The cyclic shift of proprietary demodulated reference signal (DMRS) and orthogonal sequence index (OCC); Last line index; Descending allocation index (only in FDD, having); 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 of employing be below at least a method:

(1) distribute for up or downlink resource, resource allocation bit is ceil (log2 (NDL))+1 bit, perhaps ceil (log2 (NDL))+2 bits, and NDL is a downlink bandwidth corresponding physical number of resource blocks; The original position of ceil (log2 (NDL)) expression Resource Block, 1 bit or 2 bits are used to represent the quantity of Resource Block, represent that like 2 bits the quantity of Resource Block is 1,2,3 or 4.

(2) distribute the method that adopts type 2 (type 2) continuous resource to distribute for downlink resource;

(3) distribute the method that adopts type 2 (type 2) continuous resource to distribute for downlink resource; Simultaneously with resource group (resource element group; Abbreviating REG as) alternative physical resource fast (physical resource block abbreviates PRB as) is used as least unit;

(4) distribute for up or downlink resource, enlarge Resource Block group size (resource block group size) P.As when the corresponding Resource Block quantity of downlink bandwidth less than 10 the time, the size of P is 2 or 3.

Among descending control information format Y1 or the Y2, modulation coding mode (Modulation and Coding Scheme abbreviates MCS as) bit number is 2,3 or 4, only is used to represent the modulation system of QPSK (QPSK) accordingly.As shown in table 5, the MCS bit number is 3:

The mapping table of table 5MCS, order of modulation and TBS

MCS index I _MCS	Order of modulation Q _m	TBS index 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 the downlink transfer pattern, in the said Downlink Control Information under transmission mode X, when the cyclic check code in the descending control channel adopts the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI scrambling:

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt descending control information format DCI Format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y1 to represent the transmission means of multilayer transmission.As shown in table 6:

The mapping table two of table 6 downlink transfer pattern, DCI form, search volume and transmission plan

Said descending control information format Y1 is the descending control information format of the load of reduction descending control information format 2C.Particularly, change resource allocation bit and the modulation coding mode bit of descending control information format 2C.

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt the transmission means of descending control information format DCI Format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing.As shown in table 7:

The mapping table two of table 7 uplink transmission mode, DCI form, search volume and transmission plan

Said descending control information format Y2 is the descending control information format of the load of reduction descending control information format 4.Particularly, change the resource allocation bit and the modulation coding mode bit of descending control information format 4.

Modulation coding mode, new data indication, the redundancy versions of modulation coding mode, new data indication, redundancy versions and the transmission block two of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index (only in FDD, having), HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) request, transmission block one.

Carrier wave indication territory; Resource block assignments; The through-put power control of Physical Uplink Shared Channel; The cyclic shift of proprietary demodulated reference signal (DMRS) and orthogonal sequence index (OCC); Last line index; Descending allocation index (only in FDD, having); Channel condition information (CSI) request; Sounding Reference Signal (SRS) request; The resource allocation type; Precoding information and number of plies information; The modulation coding mode of transmission block one; The new data indication; The modulation coding mode of redundancy versions and transmission block two; The new data indication; Redundancy versions.

Distribute for up or downlink resource, resource allocation bit is ceil (log2 (NDL))+1 bit, perhaps ceil (log2 (NDL))+2 bits, and NDL is a downlink bandwidth corresponding physical number of resource blocks; The original position of ceil (log2 (NDL)) expression Resource Block, 1 bit or 2 bits are used to represent the quantity of Resource Block, represent that like 2 bits the quantity of Resource Block is 1,2,3 or 4.

Distribute the method that adopts type 2 (type 2) continuous resource to distribute for downlink resource;

Distribute the method that adopts type 2 (type 2) continuous resource to distribute for downlink resource, be used as least unit with resource group (REG, resource element group) alternative physical resource fast (PRB, physical resource block) simultaneously;

Distribute for up or downlink resource, enlarge Resource Block group size (resource block group size) P.As when the corresponding Resource Block quantity of downlink bandwidth less than 10 the time, the size of P is 2 or 3.

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

Among descending control information format Y1 or the Y2, (Modulation and Coding Scheme, MCS) bit number is 2,3 or 4 to modulation coding mode, only is used to represent the modulation system of QPSK (QPSK) accordingly.As shown in table 5.

Embodiment three

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt descending control information format DCI Format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of C-RNTI definition; Adopt descending control information format Y1 to represent the transmission means of individual layer transmission (or single antenna port); Port numbers is in port 7 and 8 any one, perhaps is in port 7,8,9 and 10 any one, perhaps is fixed as port 7.As shown in table 8:

The mapping table three of table 8 downlink transfer pattern, DCI form, search volume and transmission plan

Said descending control information format Y1 is descending control information format 2C, and wherein antenna port, scrambler identity and the number of plies can adopt 0,1 or 2 bits.When adopting 0 bit, antenna port is fixed as port 7; When adopting 1 bit, this 1 bit be used to distinguish port's 7 or, perhaps be used to distinguish port 7 and 8, fix; When adopting 2 bits, be used to distinguish antenna port port 7 or 8, and or, as shown in table 9; When adopting 3 bits, as shown in table 10.Simultaneously, the modulation coding mode, new data indication and the redundancy version information territory that only comprise a transmission block.

Perhaps, said descending control information format Y1 is the descending control information format of the load of reduction descending control information format 2C or descending control information format 1.Particularly; Change resource allocation bit and the modulation coding mode bit of descending control information format 2C; And the modulation coding mode (MCS), new data indication (the New Data Indicator that only comprise a transmission block; NDI) and redundancy versions (Redundancy Version, RV) bit adopt 0,1,2 or 3 bits for antenna port, scrambler identity and the number of plies;

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

The mapping table one of table 9 antenna port, 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 table 10 antenna port, 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

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt the transmission means of descending control information format DCI Format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of individual layer transmission (or single antenna port).As shown in table 11:

The mapping table three of table 11 uplink transmission mode, DCI form, search volume and transmission plan

Perhaps, only in the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of single antenna port.As shown in table 6.

Said descending control information format Y2 is the descending control information format of the load of reduction descending control information format 4.Particularly; Change the resource allocation bit and the modulation coding mode bit of descending control information format 4; And (New Data Indicator, NDI) bit adopt 3 bits when 2 antennas for precoding and the number of plies only to comprise modulation coding mode (MCS) and the new data indication of a transmission block; Adopt 5 bits during 4 antennas, as shown in Table 12.

Table 12Bit field mapped to index and Message mapping table

Bit?field?mapped?to?index	Message
			0	1?layer：TPMI＝0
1	1?layer：TPMI＝1
		…	…
23	1?layer：TPMI＝23
		24-31	Reserve

Modulation coding mode, new data indication and the redundancy versions of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index (only in FDD, having), HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) request, transmission block one.Wherein, antenna port scrambler identity and number of plies bit are 0,1 or 2 bits.

Perhaps, the through-put power control of carrier wave indication territory, resource allocation head, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, Physical Uplink Control Channel and descending allocation index (only in FDD, having).

The cyclic shift of through-put power control, proprietary demodulated reference signal (DMRS) and the orthogonal sequence index (OCC) of carrier wave indication territory, resource block assignments, Physical Uplink Shared Channel, upward line index, descending allocation index (only in FDD, having), channel condition 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 indication, redundancy versions.

Wherein, among descending control information format Y1 or the Y2, the resource allocation bit of employing be below at least a method:

Resource allocation bit is ceil (log2 (NDL))+1 bit, perhaps ceil (log2 (NDL))+2 bits, and NDL is a downlink bandwidth corresponding physical number of resource blocks; The original position of ceil (log2 (NDL)) expression Resource Block, 1 bit or 2 bits are used to represent the quantity of Resource Block, represent that like 2 bits the quantity of Resource Block is 1,2,3 or 4.

The method that only adopts continuous resource to distribute;

When adopting the method for continuous resource distribution, fast (PRB, physical resource block) is used as least unit with resource group (REG, resource element group) alternative physical resource; When adopting discontinuous resource allocation methods, enlarge Resource Block group size (resource block group size) P.As when the corresponding Resource Block quantity of downlink bandwidth less than 10 the time, the size of P is 2 or 3.

When adopting the method that continuous resource distributes, with PRB as least unit; When adopting discontinuous resource allocation methods, do not enlarge Resource Block group size P.

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

Embodiment four

In the common search space, adopt descending control information format DCI Format to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt descending control information format Y1 to represent the Z1 transmission means, Z1 is one or more in the following transmission means:

Transmission diversity

Individual layer transmission (single antenna port)

Maximum 8 layers of transmission (up to 8 layer transmission), port 7-port one 4

As shown in table 13:

The mapping table four of table 13 downlink transfer pattern, DCI form, search volume and transmission plan

Said descending control information format Y1 is the descending control information format of the load of reduction descending control information format 1A or 2C.Particularly, change resource allocation bit and the modulation coding mode bit of descending control information format 1A or 2C.Perhaps when changing above-mentioned resource allocation and modulation coding mode bit, increase individual 0 bit of N, N is if the load of descending control information format Y1 less than Y2 the time, their load difference number; Increase the transmission means that 1 bit is used to distinguish transmission diversity and Closed-Loop Spatial Multiplexing; Increase by 1 bit and be used to distinguish descending control information format Y1 and Y2.

In the common search space, adopt the transmission means of descending control information format DCI Format 0 expression single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt descending control information format Y2 to represent the Z2 transmission means, Z1 is one or more in the following transmission means:

Individual layer transmission (single antenna port)

Closed-Loop Spatial Multiplexing

As shown in table 14.

The mapping table four of table 14 uplink transmission mode, DCI form, search volume and transmission plan

Said descending control information format Y2 is the descending control information format of the load of reduction descending control information format 0 or 4.Particularly, change the resource allocation bit and the modulation coding mode bit of descending control information format 0 or 4.Perhaps when changing above-mentioned resource allocation and modulation coding mode bit, increase individual 0 bit of N, N is if the load of descending control information format Y2 less than Y1 the time, their load difference number; Increase the transmission means that 1 bit is used to distinguish single antenna port and Closed-Loop Spatial Multiplexing; Increase by 1 bit and be used to distinguish descending control information format Y1 and Y2.

Modulation coding mode, new data indication, the redundancy versions of modulation coding mode, new data indication, redundancy versions and the transmission block two of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index (only in FDD, having), HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal (SRS) request, transmission block one; Perhaps comprise again: the bit and interpolation bit (padding) of distinguishing descending control information format Y1 and Y2.

Perhaps:

Carrier wave indication territory, concentrated and distributed virtual resource allocation selection bit, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index (only in FDD, having) and Sounding Reference Signal (SRS) request; Perhaps comprise again: the bit and interpolation bit (padding) of distinguishing descending control information format Y1 and Y2.

Carrier wave indication territory; Resource block assignments; The through-put power control of Physical Uplink Shared Channel; The cyclic shift of proprietary demodulated reference signal (DMRS) and orthogonal sequence index (OCC); Last line index; Descending allocation index (only in FDD, having); Channel condition information (CSI) request; Sounding Reference Signal (SRS) request; The resource allocation type; Precoding information and number of plies information; The modulation coding mode of transmission block one; The new data indication; The modulation coding mode of redundancy versions and transmission block two; The new data indication; Redundancy versions; Perhaps comprise again: the bit and interpolation bit (padding) of distinguishing descending control information format Y1 and Y2.

Perhaps:

Carrier wave indication territory, frequency modulation are selected cyclic shift, upward line index, descending allocation index (only in FDD, having), channel condition information (CSI) request, Sounding Reference Signal (SRS) request and the resource allocation type of through-put power control, proprietary demodulated reference signal (DMRS) and the orthogonal sequence index (OCC) of bit, resource block assignments, modulation coding mode and redundancy versions, new data indication, redundancy versions, Physical Uplink Shared Channel; Perhaps comprise again: the bit and interpolation bit (padding) of distinguishing descending control information format Y1 and Y2.

Among descending control information format Y1 or the Y2, the resource allocation bit of employing be below at least a method:

The method that only adopts continuous resource to distribute;

For descending control information format Y1,, just can delete resource allocation head (Resource allocation header) bit if adopt the resource allocation methods of type 2.

Embodiment five

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, employing descending control information format DCI Format 1A representes the transmission means of single antenna port or transmission diversity, and is as shown in table 15:

The mapping table five of table 15 downlink transfer pattern, DCI form, search volume and transmission plan

In the proprietary search volume of subscriber equipment of common search space and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) definition, adopt the transmission means of descending control information format DCI Format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of C-RNTI definition, adopt descending control information format Y2 to represent the transmission means of single antenna port.Shown in table 16:

The mapping table five of table 16 uplink transmission mode, DCI form, search volume and transmission plan

Need to prove; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in flow chart, in some cases, can have carried out step shown or that describe with the order that is different from here.

The embodiment of the invention provides a kind of transmitting device, and this transmitting device can be used to realize above-mentioned transmission method.Fig. 4 is the structured flowchart according to the transmitting device of the embodiment of the invention, and is as shown in Figure 4, comprises module 42 and sending module 44 are set.Be described in detail in the face of its structure down.

Module 42 is set, is used to be provided with transmission mode X; Sending module 44; Be connected to module 42 is set; Be used for sending Downlink Control Information to subscriber equipment through the corresponding descending control information format of transmission mode X that module 42 is provided with is set, wherein descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.

Need to prove that the transmitting device of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, repeat no more at this.

In sum, according to the abovementioned embodiments of the present invention, a kind of transmission method and device are provided.The invention provides a kind of transmission mode design,, can promote the capacity of PDCCH and the blocking rate that reduces PDCCH, make things convenient for practical application through the design of this transmission mode and the reduction of its corresponding PDCCH load.In addition, in the LTE-Advanced system, the PDCCH of the low load that this transmission mode is corresponding can solve number of users to be increased and problem such as serious interference.

Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. transmission method is characterized in that comprising:

Transmission mode X is set;

The descending control information format corresponding through said transmission mode X sends Downlink Control Information to subscriber equipment, wherein said descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.

2. method according to claim 1; It is characterized in that; At said transmission mode X is under the situation of downlink transfer pattern; In the said Downlink Control Information under said transmission mode X, when the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises:

In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition, adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity;

Perhaps; In the common search space; Adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity;

Perhaps; In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition; Adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity.

3. method according to claim 1; It is characterized in that, be under the situation of uplink transmission mode at said transmission mode X, in the said Downlink Control Information under said transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling, transmission mode X is set comprises:

In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition; Adopt the transmission means of said descending control information format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means;

Perhaps; In the common search space; Adopt the transmission means of said descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y2 to represent Closed-Loop Spatial Multiplexing individual layer transmission means;

Perhaps; In the common search space; Adopt the transmission means of said descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y2 to represent the transmission means of single antenna port.

4. according to claim 2 or 3 described methods, it is characterized in that,

The information field of said descending control information format Y1 comprise following one of at least or combination: carrier wave indication territory, distinguish DCI format 1A and 0 bit field, concentrate and bit, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index, Sounding Reference Signal request are selected in the distributed virtual resource allocation;

The information field of said descending control information format Y2 comprise following one of at least or combination: carrier wave indication territory; Distinguish the bit field of DCI format 1A and 0; Frequency modulation is selected bit; Resource block assignments; Modulation coding mode and redundancy versions; The new data indication; Redundancy versions; The through-put power control of Physical Uplink Shared Channel; Proprietary demodulated reference signal; The cyclic shift of orthogonal sequence index; Last line index; Descending allocation index; The channel condition information request; The Sounding Reference Signal request; The resource allocation type.

5. method according to claim 1; It is characterized in that; At said transmission mode X is under the situation of downlink transfer pattern; In the said Downlink Control Information under said transmission mode X, when the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises:

In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition; Adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; In the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y1 to represent the transmission means of multilayer transmission;

Perhaps; In the common search space; Adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity, in the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y1 to represent the transmission means of multilayer transmission.

6. method according to claim 1; It is characterized in that, be under the situation of uplink transmission mode at said transmission mode X, in the said Downlink Control Information under said transmission mode X; When the cyclic check code in the descending control channel adopts the C-RNTI scrambling, transmission mode X is set comprises:

In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition; Adopt the transmission means of said descending control information format 0 expression single antenna port; In the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing;

Perhaps; In the common search space; Adopt the transmission means of said descending control information format 0 expression single antenna port, in the proprietary search volume of subscriber equipment of said C-RNTI definition, adopt said descending control information format Y2 to represent the transmission means of Closed-Loop Spatial Multiplexing.

7. according to claim 5 or 6 described methods, it is characterized in that,

The information field of said descending control information format Y1 comprise following one of at least or combination: carrier wave indication territory; The resource allocation head; Resource block assignments; The through-put power control of Physical Uplink Control Channel; Descending allocation index; HARQ process number; The antenna port scrambler identity and the number of plies; The Sounding Reference Signal request; The modulation coding mode of transmission block one; The indication of transmission block one new data; The redundancy versions of transmission block one; The modulation coding mode of transmission block two; The new data indication of transmission block two; The redundancy versions of transmission block two;

The information field of said descending control information format Y2 comprise following one of at least or combination: carrier wave indication territory; Resource block assignments; The through-put power control of Physical Uplink Shared Channel; Proprietary demodulated reference signal; The cyclic shift of orthogonal sequence index; Last line index; Descending allocation index; The channel condition information request; The Sounding Reference Signal request; The resource allocation type; Precoding information and number of plies information; The modulation coding mode of transmission block one; The new data indication of transmission block one; The redundancy versions of transmission block one; The modulation coding mode of transmission block two; The new data indication of transmission block two; The redundancy versions of transmission block two.

8. method according to claim 1; It is characterized in that; At said transmission mode X is under the situation of downlink transfer pattern; In the said Downlink Control Information under said transmission mode X, when the cyclic check code in the descending control channel adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI scrambling, transmission mode X is set comprises:

In the proprietary search volume of subscriber equipment of common search space and said C-RNTI definition; Adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of said C-RNTI definition; Adopt said descending control information format Y1 to represent the transmission means of single antenna port; Port numbers is in port 7 and 8 any one, perhaps is in port 7,8,9 and 10 any one, perhaps is fixed as port 7;

Perhaps, in the common search space, adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of said C-RNTI definition; Adopt said descending control information format Y1 to represent the transmission means of single antenna port, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7;

Perhaps, in the common search space, adopt said descending control information format 1A to represent the transmission means of single antenna port or transmission diversity; Wherein, port numbers is a port 0, in the proprietary search volume of subscriber equipment of said C-RNTI definition; Adopt said descending control information format Y1 to represent the transmission means of single antenna port or transmission diversity, wherein, port numbers is in port 7 and 8 any one; Perhaps be in port 7,8,9 and 10 any one, perhaps be fixed as port 7.

9. method according to claim 8; It is characterized in that, the information field of descending control information format Y1 comprise following one of at least or combination: the modulation coding mode and/or the new data of carrier wave indication territory, resource allocation head, resource block assignments, the through-put power control of Physical Uplink Control Channel, descending allocation index, HARQ process number, antenna port scrambler identity and the number of plies, Sounding Reference Signal request, transmission block one are indicated and/or redundancy versions; Perhaps, the information field of descending control information format Y1 comprise following one of at least or combination: carrier wave indication territory, resource allocation head, resource block assignments, modulation coding mode, HARQ process number, new data indication, redundancy versions, the through-put power control of Physical Uplink Control Channel, descending allocation index.

10. method according to claim 1 is characterized in that, the load of descending control information format Y1 is identical with the load of descending control information format Y2.

11. method according to claim 10; It is characterized in that; When the load of said descending control information format Y1 is identical with the load of said descending control information format Y2; The information field of said descending control information format Y1 comprises the bit and interpolation bit of distinguishing descending control information format Y1 and Y2, and the information field of said descending control information format Y2 comprises the bit of distinguishing descending control information format Y1 and Y2 and adds bit.

12. method according to claim 1 is characterized in that, in descending control information format Y1 or descending control information format Y2, the resource allocation bit of employing comprise following one of at least:

Said resource allocation bit is ceil (log2 (NDL))+X bit, and wherein NDL is a downlink bandwidth corresponding physical number of resource blocks, and ceil (log2 (NDL)) is the original position of Resource Block, and the X bit is the quantity of Resource Block, and the X value is 1 or 2 or 3;

The method that only adopts continuous resource to distribute;

When adopting the method that continuous resource distributes, adopt resource group alternative physical Resource Block to represent, the multiple of the Resource Block quantity that the Resource Block quantity of distribution comprises for the resource group as least unit;

When adopting discontinuous resource allocation methods, enlarge the value of Resource Block group size P.

13. method according to claim 1 is characterized in that, in descending control information format Y1 or Y2, the modulation coding mode bit number is 2,3,4 or 5.

14. a transmitting device is characterized in that comprising:

Module is set, is used to be provided with transmission mode X;

Sending module; Be used for sending Downlink Control Information to subscriber equipment through the corresponding descending control information format of said transmission mode X, wherein said descending control information format comprise following one of at least: descending control information format 1A, descending control information format 0, descending control information format Y1, descending control information format Y2.