CN101594205A - A kind of descending control signaling sending method of advanced long-term evolution system - Google Patents

Abstract

The invention discloses the descending control signaling sending method of a kind of LTE-Advanced system, with the blind check number of times of effective minimizing UE.This method comprises: the CRC check sign indicating number to proprietary DCI and descending control signaling carries out first cascade, the RNTI of use UE carries out the mask operation to the CRC check sign indicating number and obtains the cascade mask code sequence, proprietary DCI indication information encoded obtain proprietary DCI indication information coded sequence, to the cascade mask code sequence encode and rate-matched obtain cascade mask coded sequence, proprietary DCI indication information coded sequence and cascade mask coded sequence are carried out second cascade new sort of laying equal stress on, obtain the block of information of a PDCCH correspondence of UE; Being mapped to resource element after the block of information of a plurality of PDCCH of a subframe handled sends.Technical scheme of the present invention has reduced the number of times of UE blind check, has reduced the implementation complexity of UE, has reduced the probability of CRC flase drop.

Description

A kind of descending control signaling sending method of advanced long-term evolution system

Technical field

The present invention relates to field of mobile wireless communication, particularly relate to the descending control signaling sending method of a kind of senior Long Term Evolution (LTE-Advanced) system.

Background technology

Fig. 1 (a) and Fig. 1 (b) show Long Term Evolution (Long Term Evolution, LTE) system's Frequency Division Duplexing (FDD) (Frequency Division Duplex, FDD) pattern and time division duplex (TimeDivision Duplex, TDD) frame structure of pattern respectively.

In the frame structure of the fdd mode shown in Fig. 1 (a), the radio frames of a 10ms (radioframe) 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.

In the frame structure of the tdd mode shown in Fig. 1 (b), the radio frames of a 10ms (radioframe) is longly formed for the field of 5ms (half frame) by two, and field comprises 5 and longly is the subframe of 1ms (subframe).Subframe i is defined as 2 and longly is time slot 2i and the 2i+1 of 0.5ms.

In two kinds of frame structures, for standard cyclic prefix (Normal Cyclic Prefix, Normal CP), the symbol that it is 66.7us that time slot comprises 7 length, wherein the CP length of first symbol is 5.21us, the CP length of all the other 6 symbols is 4.69us; For expansion (Extended) CP, a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.

LTE has defined following three kinds of downlink physical control channels, be respectively Physical Control Format Indicator Channel (Physical control format indicator channel, PCFICH), physical mixed ARQ indicating channel (Physical hybrid ARQ indicator channel, PHICH) and Physical Downlink Control Channel (Physical downlink control channel, PDCCH), wherein:

PCFICH, indication is used to transmit the information of number of the OFDM symbol of PDCCH in a subframe, send on first OFDM symbol of subframe, and the place frequency location is determined with sub-district ID by the system descending bandwidth;

PHICH, the ACK/NACK feedback information of the H-ARQ of uplink, the number of PHICH and time-frequency position can be by system message among the PBCH and sub-district ID decisions;

PDCCH includes the uplink and downlink schedule information, uplink power control information etc.; Downlink Control Information (Downlink Control Information, form DCI) (format) is divided into following several: DCI format 0 is used for the scheduling of Physical Uplink Shared Channel (PUSCH); DCI format 1,1A, 1B, 1C, 1D are used for the different mode of a physical down link sharing channel (PDSCH) code word scheduling; DCI format 2,2A are used for the different mode of space division multiplexing; DCI format 3,3A are used for the different mode of the power control instruction of Physical Uplink Control Channel (PUCCH) and PUSCH.

The physical resource of PDCCH transmission is with control channel unit (control channel element, CCE) be unit, the size of a CCE is 9 resource unit group (Resource Element Group, REG), i.e. 36 Resource Element, a PDCCH may take 1,2,4 or 8 CCE.

For four kinds of PDCCH sizes of 1,2,4,8 CCE, adopt tree-shaped polymerization (Aggregation), that is: the PDCCH of a CCE can be from any CCE position; The PDCCH of two CCE is from even number CCE position; The CCE position of the integral multiple of the PDCCH of four CCE since four; The CCE position of the integral multiple of the PDCCH of eight CCE since eight.

Each polymerization rank (Aggregation level) definition search volume (Search space) comprises public (common) and subscriber equipment (User Equipment, UE) search volume of proprietary (UE Specific).The CCE number of whole search volume is by shared OFDM symbolic number in the controlled area of PCFICH indication among each descending subframe and the group number decision of PHICH.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) by high-level signaling is semi-static (semi-statically), receives the PDSCH transfer of data according to the indication of the PDCCH of the search volume of UE specific:

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

(2) transmit diversity (Transmit diversity)

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

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

(5) multiuser MIMO (Multi-user MIMO)

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

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

If UE is set to Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number (cell Radio NetworkTemporary Identifier by high level, C-RNTI) Cyclic Redundancy Check of scrambling carries out the PDCCH decoding, and then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all that defines among the table 1-1.

If UE is set to semi-persistent scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number (semi-persistently Scheduled Radio NetworkTemporary Identifier by high level, SPS-RNTI) CRC of scrambling carries out the PDCCH decoding, and then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all that defines among the table 1-2.

PDCCH and PDSCH that table 1-1:C-RNTI is provided with

PDCCH and PDSCH that table 1-2:SPS C-RNTI is provided with

UE should each non-discontinuous reception (non-Discontinuous Reception, non-DRX) subframe detect one group of candidate PDCCH to obtain control information, detect and be meant according to all DCI format to be detected PDCCH in organizing is decoded.It is respectively that 4 and 8 common search space and aggregation level are respectively 1,2,4,8 UE-specific search space that UE should detect an aggregation level.Common and UE-specific searchspace may be overlapping.The search space of aggregation level definition is shown in table 1-3.The DCI format that UE should detect depends on the transmission mode of above-mentioned setting.

Table 1-3:UE candidate PDCCH to be checked

The interleaver of PDCCH: PDCCH will interweave before being mapped to physical resource, and employed interleaver is called sub-block interleaver (sub-block interleaver), defines in 36.212 5.1.4.1.1.

The sequence of input is designated as d ₀ ⁽ⁱ⁾, d ₁ ⁽ⁱ⁾, d ₂ ⁽ⁱ⁾..., d _D-1 ⁽ⁱ⁾, wherein D is a bit number.

The bit sequence of output is derived by following manner:

(1) order $C_{\mathrm{subblock}}^{\mathrm{TC}}=32$ Be the matrix column number, matrix column is from left to right numbered and is followed successively by 0,1,2 ..., C _Subblock ^TC-1.

(2) determine the line number R of matrix by following formula _Subblock ^TC, R _Sublock ^TCFor satisfying the integer of following formula minimum:

$D\≤(R_{\mathrm{subblock}}^{\mathrm{TC}}\×C_{\mathrm{subblock}}^{\mathrm{TC}})。$

The row of matrix is numbered from top to bottom and is followed successively by 0,1,2 ..., R _Subblock ^TC-1.

(3) if $(R_{\mathrm{subblock}}^{\mathrm{TC}}\×C_{\mathrm{subblock}}^{\mathrm{TC}})>D,$ Then add $N_D=(R_{\mathrm{subblock}}^{\mathrm{TC}}\×C_{\mathrm{subblock}}^{\mathrm{TC}}-D)$ Individual puppet (dummy) bit makes yk=＜NULL〉for k=0,1 ..., ND-1; With list entries $y_{N_D+k}=d_k^{\left(i\right)},$ K=0,1 ..., D-1 at 0 row, 0 row, writes matrix (R from y0 line by line _Subblock ^TC* C _Subblock ^TC):

(4) pattern that defines according to table 5.1.4-1 Exchange between being listed as, P (j) is former column position;

Card (R _Subblock ^TC* C _Subblock ^TC) be:

(5) output sequence of interleaver be from the exchange after matrix (R _Subblock ^TC* C _Subblock ^TC) by reading, if yk=＜NULL, then this bit is rejected. with being listed as

Table 5.1.4-1Inter-column permutation pattern for sub-block interleaver

Number of columns C subblock TC	Inter-column permutation pattern <P(0)，P(1)，...，P(C subblock TC-1)>
		32	<0，16，8，24，4，20，12，28，2，18，10，26， 6，22，14，30，1，17，9，25，5，21，13，29，3， 19，11，27，7，23，15，31>

LTE Release-8 has defined 6 kinds of bandwidth: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz.(Further Advancements for E-UTRA LTE-Advanced) is the evolution version of LTE Release-8 to advanced long-term evolution system.Except that satisfying or surpassing 3GPP TR25.913: all related needs of " Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) ", also will meet or exceed the demand of the IMT-Advanced of ITU-R proposition.Wherein, the demand with LTE Release-8 backward compatibility is meant: the subscriber equipment of LTERelease-8 can be worked in the network of LTE-Advanced; The subscriber equipment of LTE-Advanced can be worked in the network of LTE Release-8.In addition, LTE-Advanced should be able to comprise frequency spectrum configuration (as the continuous frequency spectrum resource of 100MHz) the down work wideer than LTE Release-8, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Consider and the compatibility of LTE Release-8,, adopt the mode of Carrier aggregation, that is: for bandwidth greater than 20MHz

(1) two or more component carriers (component carriers) are assembled to support the downstream transmission bandwidth greater than 20MHz.

(2) subscriber equipment can receive one or more component carriers simultaneously by its ability.

(3) there is LTE-A subscriber equipment above the 20MHz receiving ability can receive transmission on a plurality of component carriers simultaneously.LTE Rel-8 subscriber equipment can only receive the transmission on the one-component carrier wave, follows the Rel-8 standard as the structure of this component carrier.

At present, be that the form of PDCCH is reached following common recognition for the transmission of descending control signaling in the LTE-Advanced standard:

(1) based on the form of DCI format (the carrier wave indicator field (carrierindicator) that wherein comprises 0-3bit), the descending distribution (DL assignment) and the uplink authorization (UL grant) of each component carrier are encoded separately;

(2) when the figure place of carrier wave indicator field was 0, then the carrier wave indicating device did not exist.

LTE-A needs new DCI format to support multipoint cooperative transmission (CoMP), and high-order mimo strengthens wave beam and forms (beamforming) and multiuser MIMO new features such as (MU-MIMO).In addition, uplink single user MIMO (SU-MIMO) also may need independent DCI format (potentiallyof new size), even the PRB allocation of upstream discontinuous also needs to change DCI format.If adopt the PDCCH detection mode that is similar to R8, even new DCI format means the single carrier scheduling, also need more blind check number of times, unless mean that also more transmission mode--the DCI format of different transmission schemes has identical size simultaneously.If do not add any restriction, Zong the blind check number of times increases with bandwidth is linear, be at least 44*5=220 time as 5 required blind check number of times of carrier, the realization of UE has bigger complexity.

Except that realizing having the bigger complexity, the PDCCH detection mode that LTE-A continues to use Rel-8 has following shortcoming:

(1) with the benchmark of size, thereby usually need between new control information and the size that mates mutually, compromise, cause the DCI format scheme of suboptimum as differentiation DCI format;

(2) number of times of blind check equals the product of searching position and DCI format quantity, and the increase of DCI format will cause the remarkable increase of blind check number of times;

(3) because every subframe need be carried out more blind check, cause average CRC false-alarm (false positiveCRC checks) time decreased; False-alarm can cause that wrong PUCCH goes up transmission and the undelegated uplink of ACK/NACK;

(4) payload size of DCI format (Payload size) fuzzy problem; in Rel-8; filling bit (padding bits) is used to avoid the payload sizes that blurs; and be used to distinguish different DCI format, and fill the loss that (padding) can cause PDCCH to cover usually.

(5) in addition, in LTE-A, may need to reduce the number of transmission mode, mean the switching of a plurality of DCI format under model identical.This will need descending control information format size (DCI formatsize) to keep consistency preferably, otherwise will increase the blind check number of times significantly.

As seen, in LTE-A, continue to use the blind check mode of PDCCH among the Rel-8,, the implementation complexity of subscriber equipment, the degree of freedom, error performance and scheduling degree of freedom of DCI format design or the like are all had bigger constraint because required blind check number of times significantly increases.

At present, have a kind of scheme to address the above problem preferably, its basic ideas are as follows:

(1) in PDCCH, adds format indicator (Format Indicator, FI) be DCI format indication information, 2～3bit, corresponding to 4～8 kinds of DCI format, adopt the high block encoding of computational efficiency, code check relevant with aggregation level and fixing (promptly irrelevant) with the size of DCI format;

(2) code word behind the FI coding and the code word cascade behind the DCI format convolution coding; Before being mapped to CCE, adopt extra interleaver to make FI bit and DCI Bit Interleave to guarantee the frequency diversity gain of FI;

(3) bit sequence formed based on FI and DCI format of the calculating of CRC, thereby CRC correctly represents FI and DCI correct.

But this scheme is gone back imperfection to the code check of the encoding scheme of the word length of FI and related meanings, various word lengths, FI, code word behind the FI coding and interleaver of the code word behind the DCI format convolution coding or the like, can not satisfy the requirement that system realizes.

In view of this, industry demands proposing the descending control signaling sending method of a kind of LTE-Advanced system urgently, with effective minimizing subscriber equipment blind check number of times.

Summary of the invention

Technical problem to be solved by this invention is to provide the descending control signaling sending method of a kind of LTE-Advanced system, with the blind check number of times of effective minimizing subscriber equipment.

In order to solve the problems of the technologies described above, the invention provides a kind of descending control signaling sending method of advanced long-term evolution system, described descending control signaling comprises the proprietary Downlink Control Information and the proprietary Downlink Control Information indication information of subscriber equipment, and this method comprises:

Cyclic redundancy check (CRC) code to described proprietary Downlink Control Information and described descending control signaling is carried out first cascade;

Use the Radio Network Temporary Identifier number of described subscriber equipment that described cyclic redundancy check (CRC) code is carried out the mask operation, obtain the cascade mask code sequence;

Bit sequence to described proprietary Downlink Control Information indication information is encoded, and obtains proprietary Downlink Control Information indication information coded sequence;

Described cascade mask code sequence is encoded and rate-matched, obtain cascade mask coded sequence;

Described proprietary Downlink Control Information indication information coded sequence and cascade mask coded sequence are carried out second cascade,, obtain the block of information of a Physical Downlink Control Channel correspondence of described subscriber equipment the rearrangement of the sequence after described second cascade;

Being mapped to resource element after the block of information of a plurality of Physical Downlink Control Channel in the subframe handled sends.

Preferably, the cyclic redundancy check (CRC) code of described descending control signaling is the cyclic redundancy check (CRC) code of described proprietary Downlink Control Information; The cyclic redundancy check (CRC) code of perhaps described proprietary Downlink Control Information indication information and described proprietary Downlink Control Information modular cascade sequence.

Preferably, described mask is operating as described Radio Network Temporary Identifier number and cyclic redundancy check (CRC) code is carried out mould 2 add operations of corresponding position.

Preferably, use described proprietary Downlink Control Information indication information and Radio Network Temporary Identifier number that described cyclic redundancy check (CRC) code is carried out described mask operation;

Described mask is operating as described Radio Network Temporary Identifier number and carries out mould 2 add operations of corresponding position with described cyclic redundancy check (CRC) code, and the described proprietary Downlink Control Information indication information of n position participates in described mould 2 add operations of n position after described Radio Network Temporary Identifier number and the described cyclic redundancy check (CRC) code.

Preferably, described proprietary Downlink Control Information indication information is the type or the size of described proprietary Downlink Control Information.

Preferably, the length of described proprietary Downlink Control Information indication information is 1,2 or 3 bits, wherein:

When being 1 bit, described proprietary Downlink Control Information indication information is used for indicating downlink assignment information or uplink authorization information, perhaps two kinds of descending control information format sizes;

When being 2 bits, described proprietary Downlink Control Information indication information is used to indicate 4 kinds of descending control information format sizes or 4 kinds of descending control information format sizes;

When being 3 bits, described proprietary Downlink Control Information indication information is used to indicate 8 kinds of descending control information formats or 8 kinds of descending control information format sizes.

Preferably, when the length of described proprietary Downlink Control Information indication information is 1 bit, bit sequence to described proprietary Downlink Control Information indication information carries out repeated encoding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 4,8,16 or 24 accordingly, and code check is respectively 1/4,1/8,1/16 or 1/24 accordingly; Perhaps code length is respectively 3,6,12 or 18 accordingly, and code check is respectively 1/3,1/6,1/12 or 1/18 accordingly;

When the length of described proprietary Downlink Control Information indication information is 2 bits, bit sequence to described proprietary Downlink Control Information indication information carries out (2 of repetition, 3) sign indicating number coding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 6,12,24 or 36 accordingly, and code check is respectively 1/3,1/6,1/12 or 1/18 accordingly; Perhaps code length is respectively 4,8,16 or 32 accordingly, and code check is respectively 1/2,1/4,1/8 or 1/16 accordingly;

When the length of described proprietary Downlink Control Information indication information is 3 bits, bit sequence to described proprietary Downlink Control Information indication information carries out the Hamming code coding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 6,18,36 or 48 accordingly, and code check is respectively 1/2,1/6,1/12 or 1/16 accordingly; Perhaps code length is respectively 5,9,18 or 36 accordingly, and code check is respectively 3/5,1/3,1/6 or 1/12 accordingly.

Preferably, the length of described cyclic redundancy check (CRC) code is 16,18,20 or 24 bits, wherein:

When being 16 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D16+D12+D5+1];

When being 18 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D18+D17+D15+D9+D7+D6+D5+D4+D3+1];

When being 20 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D20+D18+D17+D14+D12+D10+D8+D7+D2+1];

When being 24 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D ²⁴+ D ²³+ D ⁶+ D ⁵+ D+1].

Preferably, to the cyclic redundancy check (CRC) code after described proprietary Downlink Control Information and the operation of described mask, sting the tail convolutional encoding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, and the code length of proprietary Downlink Control Information and cyclic redundancy check (CRC) code coding is that the bit length of the Physical Downlink Control Channel that can carry in the control corresponding Channel Elements polymerization rank deducts the code length after the proprietary Downlink Control Information indication information of described control channel unit polymerization rank is encoded.

Preferably, the code length of proprietary Downlink Control Information and cyclic redundancy check (CRC) code coding is 68,136,272 or 552 accordingly.

Preferably, to the sequence after described second cascade, carry out described rearrangement according to the mode of sub-block interleaver definition; Perhaps

Dibit one 2 tuple of composition and every bit adjacent in the sequence after described second cascade are only made up once, then all 2 tuples are formed in proper order a group sequence, according to the mode of sub-block interleaver definition described group of sequence carried out described rearrangement again, one 2 tuple replaces a bit in the sub-block interleaver.

Compared with prior art, technical scheme of the present invention, reduced the number of times of subscriber equipment blind check, reduced the implementation complexity of subscriber equipment, reduce the probability of CRC flase drop, improved the degree of freedom of DCI format design and the flexibility of system call, solved the transmission problem of Carrier aggregation Downlink Control Information, help the compatibility of LTE-Advanced and LTE Release-8, help the realization of LTE-Advanced system.

Description of drawings

Fig. 1 (a) is the frame structure schematic diagram of LTE system fdd mode;

Fig. 1 (b) is the frame structure schematic diagram of LTE system TDD mode;

Fig. 2 is the schematic flow sheet of the inventive method embodiment;

Fig. 3 is the series of operations schematic diagram of method embodiment correspondence shown in Figure 2.

Embodiment

Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.

Core concept of the present invention is, descending control signaling comprises proprietary DCI information and the proprietary DCI indication information of UE, bit sequence to proprietary DCI information adds the CRC check sign indicating number, finish first cascade between proprietary DCI information and the CRC check sign indicating number, and use the Radio Network Temporary Identifier number (RNTI) of UE that the CRC check sign indicating number after the cascade is carried out the mask operation to obtain the cascade mask code sequence; The bit sequence of proprietary DCI indication information encoded obtains proprietary DCI indication information coded sequence, and this cascade mask code sequence is encoded and rate-matched obtains cascade mask coded sequence; This proprietary DCI indication information coded sequence and this cascade mask coded sequence are carried out second cascade, and, obtain the block of information of the PDCCH correspondence of UE the rearrangement of the sequence after second cascade; (resource element RE) sends to be mapped to resource element after the block of information of a plurality of PDCCH in the subframe handled.

Fig. 2 is the schematic flow sheet of the inventive method embodiment, and Fig. 3 is the series of operations schematic diagram of method embodiment correspondence shown in Figure 2.See also Fig. 3, this method embodiment shown in Figure 2 mainly comprises the steps:

Step S210 carries out first cascade to the CRC check sign indicating number of proprietary DCI information and descending control signaling;

Step S220 uses the RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtains the cascade mask code sequence;

Step S230 encodes to the bit sequence of proprietary DCI indication information, obtains proprietary DCI indication information coded sequence;

Step S240 encodes and rate-matched to the cascade mask code sequence, obtains cascade mask coded sequence;

Step S250 carries out second cascade to proprietary DCI indication information coded sequence and cascade mask coded sequence, to the rearrangement of the sequence after second cascade, obtains the block of information of a PDCCH correspondence of UE;

Step S260 is mapped to resource element after the block of information of a plurality of PDCCH in the subframe handled and sends.

Wherein, can also further add the bit sequence of proprietary DCI indication information to the bit sequence of proprietary DCI information, also i.e. this first cascade is that the bit sequence of the bit sequence at proprietary DCI information, proprietary DCI indication information and the CRC check sign indicating number of descending control signaling carry out.At this moment, mask wherein is operating as the RNTI of UE and mould 2 add operations that the CRC check sign indicating number corresponds to.

Perhaps, can use the RNTI of proprietary DCI indication information and UE, CRC check sign indicating number after proprietary DCI information and first cascade of CRC check sign indicating number is carried out the mask operation, the RNTI that this moment, mask was operating as UE carries out corresponding mould 2 add operations with the CRC check sign indicating number, and the proprietary DCI indication information of n position participates in mould 2 add operations of n position behind this RNTI and the CRC check sign indicating number.

Further specify type or size that proprietary DCI indication information can be proprietary DCI information.

Further specify a kind of in desirable 1,2 or 3 bits of the length of proprietary DCI indication information; This DCI indication information is used for indication/descending DCI format or two kinds of DCIformat size when wherein getting 1 bit; This DCI indication information is used to indicate 4 kinds of DCI format or 4 kinds of DCIformat size when getting 2 bits; This DCI indication information is used to indicate 8 kinds of DCI format or 8 kinds of DCIformat size when getting 3 bits.

Further specify, the length of above-mentioned CRC check sign indicating number is 16 bits, and generator polynomial is G (D)=g _CRC16(D)=[D ¹⁶+ D ¹²+ D ⁵+ 1]; The length of perhaps above-mentioned CRC check sign indicating number is 18 bits, and generator polynomial is G (D)=g _CRC18(D)=[D ¹⁸+ D ¹⁷+ D ¹⁵+ D ⁹+ D ⁷+ D ⁶+ D ⁵+ D ⁴+ D ³+ 1]; The length of perhaps above-mentioned CRC check sign indicating number is 20 bits, and generator polynomial is G (D) g _CRC20(D)=[D ²⁰+ D ¹⁸+ D ¹⁷+ D ¹⁴+ D ¹²+ D ¹⁰+ D ⁸+ D ⁷+ D ²+ 1]; The length of perhaps above-mentioned CRC check sign indicating number is 24 bits, and generator polynomial is G (D)=g _CRC24(D)=[D ²⁴+ D ²³+ D ⁶+ D ⁵+ D+1].

The CRC check sign indicating number of above-mentioned descending control signaling can be the CRC check sign indicating number of proprietary DCI information sequence, also can be the CRC check sign indicating number of proprietary DCI indication information and proprietary DCI information modular cascade sequence.

Further specify, above-mentioned bit sequence to descending control signaling adds the CRC check sign indicating number, and with the proprietary information of this UE this CRC check sign indicating number is carried out the mask operation, comprises two kinds of situations:

(1) bit sequence to proprietary DCI indication information and the cascade of proprietary DCI information adds the CRC check sign indicating number, and with Radio Network Temporary Identifier number (the Radio Network TemporaryIdentifier of UE, RNTI) the CRC check sign indicating number is carried out the mask operation, the mask operation is meant mould 2 add operations of RNTI and the corresponding position of CRC check sign indicating number; Perhaps

(2) bit sequence to proprietary DCI information adds the CRC check sign indicating number, and carry out the mask operation of CRC with the RNTI of UE, or simultaneously the CRC check sign indicating number is carried out the mask operation with the RNTI sequence of UE and proprietary DCI indication information sequence, mask operation is exactly that RNTI and CRC check sign indicating number carry out corresponding mould 2 add operations, and the proprietary DCI indication information of n position participates in mould 2 add operations of n position behind RNTI and the CRC check sign indicating number.

Further specify, when the length of proprietary DCI indication information is 1 bit, adopt repeated encoding; When the length of proprietary DCI indication information is 2 bits, adopt (2,3) sign indicating number coding that repeats; When the length of proprietary DCI indication information is 3 bits, adopt Hamming code to encode.

Further specify, the code length behind the proprietary DCI indication information coding defines according to the CCEaggregation level of PDCCH, wherein:

When the length of proprietary DCI indication information is 1 bit, for the CCE aggregationlevel of PDCCH is 1,2,4 or 8 o'clock, code length behind its coding is respectively 4,8,16 or 24 accordingly, and corresponding code check is respectively 1/4,1/8,1/16 or 1/24 accordingly; Perhaps the code length behind its coding is respectively 3,6,12 or 18 accordingly, and corresponding code check is respectively 1/3,1/6,1/12 or 1/18 accordingly;

When the length of proprietary DCI indication information is 2 bits, for the CCE aggregationlevel of PDCCH is 1,2,4 or 8 o'clock, code length behind its coding is respectively 6,12,24 or 36 accordingly, and corresponding code check is respectively 1/3,1/6,1/12 or 1/18 accordingly; Perhaps the code length behind its coding is respectively 4,8,16 or 32 accordingly, and corresponding code check is respectively 1/2,1/4,1/8 or 1/16 accordingly;

When the length of proprietary DCI indication information is 3 bits, for the CCE aggregationlevel of PDCCH is 1,2,4 or 8 o'clock, code length behind its coding is respectively 6,18,36 or 48 accordingly, and corresponding code check is respectively 1/2,1/6,1/12 or 1/16 accordingly; Perhaps the code length behind its coding is respectively 5,9,18 or 36 accordingly, and corresponding code check is respectively 3/5,1/3,1/6 or 1/12 accordingly.

Further specify, the bit sequence of the CRC check sign indicating number cascade after above-mentioned proprietary DCI information and the mask operation, adopt tail-biting convolutional code coding (the Tail biting convolutional coding) scanning frequency of going forward side by side rate coupling, for the CCE aggregation level of the PDCCH of this UE is 1,2,4 or 8 o'clock, and the code length behind its coding is that the bit length of the PDCCH that can carry among the corresponding C CE aggregation level deducts the code length after the proprietary DCI indication information of this CCE aggregation level is encoded.

Further specify, resequence after the bit sequence cascade after above-mentioned will the coding, the mode that can define according to sub-block interleaver by the bit sequence with cascade behind the above-mentioned coding is to this sequence rearrangement back output; Bit sequence cascade after perhaps will encoding obtains sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, define 2 tuple Z (i/2)=＜a _i, a _I+1, i=0,2,4 ..., L-1, then with 2 tuple sequence Z (0), Z (1) ... Z ((L-1)/2) resequences to this sequence according to the mode of sub-block interleaver definition.Wherein 2 tuples are with sequence a ₀, a ₁... a _L-1Adjacent per two bit are divided into one group and every bit and only make up once, then with these group serial numbers and be cascaded as a group sequence.Among the sub-blockinterleaver, replace bit to carry out exporting behind the associative operation with 2 tuples.

About proprietary DCI information is stung tail convolutional encoding and rate-matched, in LTE 36.212 standards clear and definite regulation is arranged.In brief, adopt the tail-biting convolutional code encoder to obtain 3 code streams to proprietary DCI information by 1/3 code check coding, when carrying out rate-matched each personal sub-blockinterleaver of 3 code streams is interweaved, import according to the order of sequence then in the virtual annular buffer, according to the code check of actual needs, in the buffer of annular, select corresponding code word again as output.The purpose of rate-matched is can encode and the speed adjustment by identical mode for the proprietary DCI information that makes different length.

When resequencing, after cascade mask code sequence after the CRC check sign indicating number cascade after the operation of the bit sequence of proprietary DCI information and mask is encoded, make the length of the cascade mask coded sequence behind the coding equal total length that each Aggregation level can hold through the processing of rate-matched and deduct the poor of the length that is used for proprietary DCI indication information.

First embodiment

When proprietary DCI indication information FI was 1bit, value 0/1 was indicated DL assignment/ULgrant respectively.Proprietary DCI indication information is actual at this moment is the type of proprietary DCI information.

The information bit sequence a of DCI format ₀, a ₁..., a _A-1The indication information bit sequence f of (A is a positive integer) and this DCI format ₀Carry out first cascade, obtain sequence f ₀, a ₀, a ₁... a _A-1, wherein, the information of DCIformat is aforesaid proprietary DCI information.

Use CRC check sign indicating number generator polynomial g _CRC16(D)=[D ¹⁶+ D ¹²+ D ⁵+ 1] situation can be a kind of in following:

(1) to sequence f ₀, a ₀, a ₁... a _A-1Add the CRC check position, calling sequence f ₀, a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence f ₀, a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, l ' wherein _k=(l _k+ x _k) mod 2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(2) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence A ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, l ' wherein _k=(l _k+ x _k) mod2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(3) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use 16bit RNTI and the f of UE ₀The CRC check sign indicating number is carried out the mask operation, obtain sequence a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, wherein:

$l_k^{\&prime;}=\left\{\begin{array}{c}(l_k+x_k)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=\mathrm{0,1,2}...14\\ (l_k+x_k+f_0)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=15\end{array}\right.$ , x ₀, x ₁..., x ₁₅RNTI for UE.

To f ₀Adopt duplication code to encode, the sequence after obtaining encoding is f ' ₀, f ' ₁, f ' ₂... f ' _M-1, for PDCCH CCE aggregation level 1,2,4 or 8, no matter which kind of DCI format that indication is, M=4,8,16 or 24 accordingly.a ₀, a ₁... a _A-1, l ' ₀, l ' ₁, l ' ₁... l ' ₁₅Obtain coded sequence a ' after tail convolutional encoding (the Tail biting convolutional coding) scanning frequency of the going forward side by side rate of the stinging coupling of employing LTE Rel-8 ₀, a ' ₁... a ' _N-1, for PDCCH CCE aggregation level 1,2,4 or 8, N=68,136,272 or 552 accordingly.It should be noted that proprietary DCI indication information is only encoded that its code check is fixed.

Two sequences behind the coding are carried out second cascade, obtain the sequence f ' after second cascade ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, then:

According to the mode of sub-block interleaver definition, to this sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1The output of rearrangement back; Perhaps

Define 2 tuple sequences＜f ' ₀, f ' ₁,＜f ' ₂, f ' ₃...＜f ' _M-2, f ' _M-1,＜a ' ₀, a ' ₁,＜a ' ₂, a ' ₃...＜a ' _N-2, a ' _N-1, according to the mode of sub-block interleaver definition,, wherein replace bit to carry out exporting behind the associative operation with 2 tuples among the sub-blockinterleaver to this 2 tuple sequence rearrangement.

The sequence of output is the block of information of a PDCCH correspondence of LTE-A UE.

By the mode that defines among the LTE Rel-8, the block of information of a plurality of PDCCH in the subframe carried out multiplexing and scrambling, modulation, layer mapping and precoding after, (resource element RE) sends to be mapped to resource element.

Second embodiment

When FI is 2bit, value 00,01,10,11 indicate a kind of DCI format or a kind of DCI format size respectively, and wherein FI is aforesaid proprietary DCI indication information.At this moment, proprietary DCI indication information is actual is the type or the size of proprietary DCI information.

The information bit sequence a of DCI format ₀, a ₁..., a _A-1The indication information bit sequence f of (A is a positive integer) and this DCI format ₀f ₁Carry out first cascade, obtain sequence f ₀, f ₁, a ₀, a ₁... a _A-1, wherein, the information of DCIformat is aforesaid proprietary DCI information.

Use CRC check sign indicating number generator polynomial g _CRC16(D)=[D ¹⁶+ D ¹²+ D ⁵+ 1] situation can be a kind of in following:

(1) to sequence f ₀, f ₁, a ₀, a ₁... a _A-1Add the CRC check position, calling sequence f ₀, f ₁, a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence f ₀, f ₁, a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅L ' wherein _k=(l _k+ x _k) mod2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(2) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, l ' wherein _k=(l _k+ x _k) mod2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(3) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use 16bit RNTI and the f of UE ₀f ₁The CRC check sign indicating number is carried out the mask operation, obtain sequence a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, wherein:

$l_k^{\&prime;}=\left\{\begin{array}{c}(l_k+x_k)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=\mathrm{0,1,2}...13\\ (l_k+x_k+f_{k-14})\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=\mathrm{14,15}\end{array}\right.$ , x ₀, x ₁..., x ₁₅RNTI for UE.

To f ₀f ₁Adopt (2,3) sign indicating number coding and carry out repetition,, establish (2,3) sign indicating number and adopt following coded system: 00-011,01-101,10-110,11-000 to obtain required code check.f ₀f ₁After coding and the repetition, obtain sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1To PDCCH CCE aggregation level 1,2,4 or 8, no matter which kind of DCI format that indication is, M gets 6,12,24 or 36 accordingly respectively.a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅Obtain coded sequence a ' after tail convolutional encoding (the Tail biting convolutional coding) scanning frequency of the going forward side by side rate of the stinging coupling of employing LTE Rel-8 ₀, a ' ₁... a ' _N-1, for PDCCH CCE aggregation level 1,2,4 or 8, N=66,132,264 or 540 accordingly.It should be noted that proprietary DCI indication information is only encoded that its code check is fixed.

Two sequences behind the coding are carried out second cascade, obtain the sequence f ' after second cascade ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, then:

According to the mode of sub-block interleaver definition, to this sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, the output of rearrangement back; Perhaps

Define 2 tuple sequences＜f ' ₀, f ' ₁,＜f ' ₂, f ' ₃...＜f ' _M-2, f ' _M-1,＜a ' ₀, a ' ₁,＜a ' ₂, a ' ₃...＜a ' _N-2, a ' _N-1, according to the mode of sub-block interleaver definition,, wherein replace bit to carry out exporting behind the associative operation with 2 tuples among the sub-blockinterleaver to this 2 tuple sequence rearrangement.

The sequence of output is the block of information of a PDCCH correspondence of LTE-A UE.

Then by the mode that defines among the LTE Rel-8, to the block of information of a plurality of PDCCH in the subframe carry out multiplexing and scrambling, modulation, layer mapping and precoding after, be mapped to RE and send.

The 3rd embodiment

When FI was 3bit, value 000～111 was indicated a kind of DCI format or a kind of DCI formatsize respectively, and wherein FI is aforesaid proprietary DCI indication information.At this moment, proprietary DCI indication information is actual is the type or the size of proprietary DCI information.

The information bit sequence a of DCI format ₀, a ₁..., a _A-1(A is a positive integer) and this DCI format indication information bit sequence f ₀f ₁f ₂Carry out first cascade, obtain sequence f ₀, f ₁, f ₂, a ₀, a ₁... a _A-1, wherein, the information of DCI format is aforesaid proprietary DCI information.

Use CRC check sign indicating number generator polynomial g _CRC16(D)=[D ¹⁶+ D ¹²+ D ⁵+ 1] situation can be following a kind of:

(1) to sequence f ₀, f ₁, f ₂, a ₀, a ₁... a _A-1Add CRC check position calling sequence f ₀, f ₁, f ₂, a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence f ₀, f ₁, f ₂, a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, l ' wherein _k=(l _k+ x _k) mod2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(2) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use the 16bit RNTI of UE that the CRC check sign indicating number is carried out the mask operation, obtain sequence a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, l ' wherein _k=(l _k+ x _k) mod2, k=0,1,2 ..., 15, x ₀, x ₁..., x ₁₅RNTI for UE;

(3) to sequence a ₀, a ₁... a _A-1Add the CRC check position, calling sequence a ₀, a ₁... a _A-1, l ₀, l ₁... l ₁₅, l wherein ₀, l ₁... l ₁₅Be the CRC check sign indicating number; Use 16bit RNTI and the f of UE ₀f ₁f ₂The CRC check sign indicating number is carried out the mask operation, obtain sequence a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅, wherein:

$l_k^{\&prime;}=\left\{\begin{array}{c}(l_k+x_k)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=\mathrm{0,1,2}...12\\ (l_k+x_k+f_{k-13})\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="A2009101473970026H1.png,A2009101473970028H1.png"\; state="\{\{state\}\}">mod</figure-callout>}2,k=\mathrm{13,14,15}\end{array}\right.$ , x ₀, x ₁..., x ₁₅RNTI for UE;

(4) to f ₀f ₁f ₂Employing Hamming code coding obtains sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1To PDCCH CCEaggregation level 1,2,4 or 8, no matter which kind of DCI format that indication is, M gets 6,18,36 or 48 accordingly respectively; a ₀, a ₁... a _A-1, l ' ₀, l ' ₁... l ' ₁₅After adopting tail convolutional encoding (the Tailbiting convolutional coding) scanning frequency of the going forward side by side rate of the stinging coupling of LTE Rel-8, obtain coded sequence a ' ₀, a ' ₁... a ' _N-1, for PDCCH CCE aggregation level 1,2,4 or 8, N=66,126,252 or 528 accordingly.It should be noted that proprietary DCI indication information is only encoded that its code check is fixed.

Two sequences are carried out second cascade, obtain the sequence f ' after second cascade ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, then:

According to the mode of sub-block interleaver definition, to sequence f ' ₀, f ' ₁, f ' ₂..., f ' _M-1, a ' ₀, a ' ₁... a ' _N-1, the output of rearrangement back; Perhaps

Define 2 tuple sequences＜f ' ₀, f ' ₁,＜f ' ₂, f ' ₃...＜f ' _M-2, f ' _M-1,＜a ' ₀, a ' ₁,＜a ' ₂, a ' ₃...＜a ' _N-2, a ' _N-1, according to the mode of sub-block interleaver definition,, wherein replace bit to carry out exporting behind the associative operation with 2 tuples among the sub-blockinterleaver to this 2 tuple sequence rearrangement.

The sequence of output is the block of information of a PDCCH correspondence of LTE-A UE.

Then by the mode that defines among the LTE Rel-8, to the block of information of a plurality of PDCCH in the subframe carry out multiplexing and scrambling, modulation, layer mapping and precoding after, be mapped to RE and send.

The present invention improves and improves prior art, and a kind of sending method of descending control signaling is provided for LTE-Advanced.The technical scheme of the inventive method, reduced the number of times of subscriber equipment blind check effectively, reduced the implementation complexity of subscriber equipment preferably, reduced the probability of CRC flase drop, the degree of freedom of DCI format design and the flexibility of system call have been improved, solve the transmission problem of Carrieraggregation Downlink Control Information preferably, helped the compatibility of LTE-Advanced and LTERelease-8, helped the realization of LTE-Advanced system.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any those skilled in the art are in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (11)

1, a kind of descending control signaling sending method of advanced long-term evolution system, described descending control signaling comprise the proprietary Downlink Control Information and the proprietary Downlink Control Information indication information of subscriber equipment, it is characterized in that this method comprises:

Cyclic redundancy check (CRC) code to described proprietary Downlink Control Information and described descending control signaling is carried out first cascade;

Use the Radio Network Temporary Identifier number of described subscriber equipment that described cyclic redundancy check (CRC) code is carried out the mask operation, obtain the cascade mask code sequence;

Bit sequence to described proprietary Downlink Control Information indication information is encoded, and obtains proprietary Downlink Control Information indication information coded sequence;

Described cascade mask code sequence is encoded and rate-matched, obtain cascade mask coded sequence;

Described proprietary Downlink Control Information indication information coded sequence and cascade mask coded sequence are carried out second cascade,, obtain the block of information of a Physical Downlink Control Channel correspondence of described subscriber equipment the rearrangement of the sequence after described second cascade;

Being mapped to resource element after the block of information of a plurality of Physical Downlink Control Channel in the subframe handled sends.

2, the method for claim 1 is characterized in that:

The cyclic redundancy check (CRC) code of described descending control signaling is the cyclic redundancy check (CRC) code of described proprietary Downlink Control Information; The cyclic redundancy check (CRC) code of perhaps described proprietary Downlink Control Information indication information and described proprietary Downlink Control Information modular cascade sequence.

3, the method for claim 1 is characterized in that:

Described mask is operating as described Radio Network Temporary Identifier number and cyclic redundancy check (CRC) code is carried out mould 2 add operations of corresponding position.

4, the method for claim 1 is characterized in that:

Use described proprietary Downlink Control Information indication information and Radio Network Temporary Identifier number that described cyclic redundancy check (CRC) code is carried out described mask operation;

Described mask is operating as described Radio Network Temporary Identifier number and carries out mould 2 add operations of corresponding position with described cyclic redundancy check (CRC) code, and the described proprietary Downlink Control Information indication information of n position participates in described mould 2 add operations of n position after described Radio Network Temporary Identifier number and the described cyclic redundancy check (CRC) code.

5, as claim 1,2,3 or 4 described methods, it is characterized in that:

Described proprietary Downlink Control Information indication information is the type or the size of described proprietary Downlink Control Information.

6, method as claimed in claim 5 is characterized in that, the length of described proprietary Downlink Control Information indication information is 1,2 or 3 bits, wherein:

When being 1 bit, described proprietary Downlink Control Information indication information is used for indicating downlink assignment information or uplink authorization information, perhaps two kinds of descending control information format sizes;

When being 2 bits, described proprietary Downlink Control Information indication information is used to indicate 4 kinds of descending control information format sizes or 4 kinds of descending control information format sizes;

When being 3 bits, described proprietary Downlink Control Information indication information is used to indicate 8 kinds of descending control information formats or 8 kinds of descending control information format sizes.

7, method as claimed in claim 6 is characterized in that:

When the length of described proprietary Downlink Control Information indication information is 1 bit, bit sequence to described proprietary Downlink Control Information indication information carries out repeated encoding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 4,8,16 or 24 accordingly, and code check is respectively 1/4,1/8,1/16 or 1/24 accordingly; Perhaps code length is respectively 3,6,12 or 18 accordingly, and code check is respectively 1/3,1/6,1/12 or 1/18 accordingly;

When the length of described proprietary Downlink Control Information indication information is 2 bits, bit sequence to described proprietary Downlink Control Information indication information carries out (2 of repetition, 3) sign indicating number coding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 6,12,24 or 36 accordingly, and code check is respectively 1/3,1/6,1/12 or 1/18 accordingly; Perhaps code length is respectively 4,8,16 or 32 accordingly, and code check is respectively 1/2,1/4,1/8 or 1/16 accordingly;

When the length of described proprietary Downlink Control Information indication information is 3 bits, bit sequence to described proprietary Downlink Control Information indication information carries out the Hamming code coding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, the code length of described proprietary Downlink Control Information indication information coding is respectively 6,18,36 or 48 accordingly, and code check is respectively 1/2,1/6,1/12 or 1/16 accordingly; Perhaps code length is respectively 5,9,18 or 36 accordingly, and code check is respectively 3/5,1/3,1/6 or 1/12 accordingly.

As claim 1,2,3 or 4 described methods, it is characterized in that 8, the length of described cyclic redundancy check (CRC) code is 16,18,20 or 24 bits, wherein:

When being 16 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D16+D12+D5+1];

When being 18 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D18+D17+D15+D9+D7+D6+D5+D4+D3+1];

When being 20 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D20+D18+D17+D14+D12+D10+D8+D7+D2+1];

When being 24 bits, described cyclic redundancy check (CRC) code generator polynomial is G (D)=[D ²⁴+ D ²³+ D ⁶+ D ⁵+ D+1].

9, as claim 1,2,3 or 4 described methods, it is characterized in that:

To the cyclic redundancy check (CRC) code after described proprietary Downlink Control Information and the operation of described mask, sting the tail convolutional encoding, the control channel unit polymerization rank of the Physical Downlink Control Channel of described subscriber equipment is 1,2,4 or 8 o'clock, and the code length of proprietary Downlink Control Information and cyclic redundancy check (CRC) code coding is that the bit length of the Physical Downlink Control Channel that can carry in the control corresponding Channel Elements polymerization rank deducts the code length after the proprietary Downlink Control Information indication information of described control channel unit polymerization rank is encoded.

10, method as claimed in claim 9 is characterized in that:

The code length of proprietary Downlink Control Information and cyclic redundancy check (CRC) code coding is 68,136,272 or 552 accordingly.

11, as claim 1,2,3 or 4 described methods, it is characterized in that:

To the sequence after described second cascade, carry out described rearrangement according to the mode of sub-block interleaver definition; Perhaps

Dibit one 2 tuple of composition and every bit adjacent in the sequence after described second cascade are only made up once, then all 2 tuples are formed in proper order a group sequence, according to the mode of sub-block interleaver definition described group of sequence carried out described rearrangement again, one 2 tuple replaces a bit in the sub-block interleaver.

Images