CN101374340B - Method and apparatus for interleaving and de-interleaving district interference synergic control channel - Google Patents
Method and apparatus for interleaving and de-interleaving district interference synergic control channel Download PDFInfo
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Abstract
The invention provides a control information interleaving method for realizing the channel interference coordination, which includes the following steps: a) the base station groups all the CCE acquired in one subframe in the sending process of downward control information, that is m CCE are in one group; b) the public interleaver size is ensured by total number of CCE contained in m and subframe, for ensuring information outputted from the interleaver can occupy OFDM signs for control information in the subframe; c) m CCE in every group are written into each public interleaver according to rows, after the cyclic shift special for channels, every RE is read out according to columns, and is mapped onto the subcarrier for accomplishing interleaving in sequence. The size of the public interleaver provided by the invention varied with CCE number, thereby achieving good effects of the interference randomization between channels and the interference coordination, thereby improving utilization ratio of system bandwidth and reliability of receiving of control signaling.
Description
Technical field
The present invention relates to the presence of intercell interference randomization or the interference synergic technology of broadband wireless mobile communication, interweaving and sending method when relating in particular to the down control channel mapping, and corresponding dispensing device.
Background technology
It is international that mobile communication IMT (International Mobile Telecommunication)-the advanced system is the (ITU of International Telecommunications Union; International Telecommunication Union) gives ultra 3G (B3G; Beyond 3G) the formal title of GSM estimates that beginning is commercial before and after 2010.
In the IMT-advanced system, Downlink Control Information is arranged in preceding n OFDM (OFDM, the Orthogonal Frequency Division Multiplexity) symbol of subframe, wherein n≤3.Down control channel is made up of following message:
The control information of-descending scheduling is comprising: resource allocation information, transport format information, information and the PCH (PCH, Paging Channel) relevant with mixing automatic repeat requests (HARQ, Hybrid Automatic Repeat Request).
The scheduling authorization of-uplink, comprising: transmission parameter information, resource allocation information and with each user's the relevant information of last start of line time slot.
-ACK/NACK: the descending ACK/NACK relevant (confirming/deny information) with transmitting uplink data.
Control channel is the set of control channel unit (CCE, Control Channel Elements).Each CCE is made up of a plurality of Resource Units (RE, Resource Elements) again, for example, and CCE=30REs.
CCE makes up with structurized mode, constitutes the Different control channel, and all uses QPSK (QPSK, Quadrature Phase Shift Keying) modulation system.Generally speaking, control channel can constitute the Different control channel format by 1,2 or 4 CCE, distinguishes corresponding different coding speed 2/3,1/3 and 1/6, and is carried by Physical Downlink Control Channel (PDCCH, PhysicalDownlink Control Channel).Whenever the k sub-frame of being separated by, Node B will send the number of a CCE, is used for informing all users' on the control channel of all user equipment (UE)s the total number of CCE.
Comprise a plurality of PDCCH in each subframe, the control information of carrying different user respectively.UE searches one's own control information through monitoring one group of candidate's control channel (being PDCCH); This group candidate control channel of being monitored by UE is disposed by high-level signaling, the size of candidate's control channel determined UE be the one's own control information of search the maximum quantity of the blind Detecting that must carry out.
In mapping (being about to CCE is mapped on the RE subcarrier) process of RE, if the mapping ruler of common CCE to RE all used in all sub-districts, CCE is identical in all sub-districts to the mapped mode of RE so at CCE.Therefore some UEs especially are in those UEs of cell edge, will receive serious presence of intercell interference.
Thus, propose Node B at present and should use the cell-specific pattern, when promptly CCE is mapped to RE, use the method for a kind of public interleaving device and cell-specific cyclic shift, to realize presence of intercell interference randomization or interference synergic.Common way is that several CCE are divided into one group, realizes cell-specific displacement, i.e. presence of intercell interference randomization and interference synergic with a simple block interleaver.Interleaver is the rectangular interweaving device of R*C, and wherein R is the line number of interleaver, and C is the columns of interleaver; According to the mapping ruler of CCE to RE, R and C are definite value, promptly whole transmission course, and the size of public interleaving device is all constant.
At this, cell coordination mainly utilizes the cell-specific cyclic shift to realize, the figure place of concrete displacement is bound with sub-district ID.Be different sub-districts, the displacement figure place is different, therefore can realize cell coordination.The cell coordination implementation method is as shown in Figure 1, as can be seen from the figure, after different districts adopts different displacement figure places, when the information of interleaver output is carried out the subcarrier mapping, will stagger each other, reaches the purpose of interference synergic.The square of white is exactly the purpose that plays interference randomization among the figure, but through different displacement figure places, has just realized interference synergic again.
The shortcoming of this interleaver is because the size of public interleaving device immobilizes, therefore, under the less situation of CCE number, when the subcarrier mapping is carried out in the output of interleaver, can not realize frequency diversity and interference synergic fully.
Summary of the invention
Technical problem to be solved by this invention provides a kind of control channel interleaving/deinterleaving method and device thereof that is used to realize district interference synergic, can not realize the defective that presence of intercell interference is collaborative to overcome CCE existing public interleaving device in the RE mapping process in the CCE number more after a little while.
In order to solve the problems of the technologies described above, a kind of control information deinterleaving method that is used to realize district interference synergic provided by the invention comprises the steps:
(a) in the process of transmitting of Downlink Control Information, dividing into groups to all control channel unit CCE that obtain in the sub-frame in the base station, is about to every m CCE and is divided into one group;
(b) total number of the CCE that comprises according to m and subframe is confirmed the size of public interleaving device, makes the Resource Unit RE of the back output that interweaves can take the OFDM symbol that is used for control information in this subframe;
(c) m CCE of each group write public interleaving device separately by row, carry out the cell-specific cyclic shift after, read the RE in each public interleaving device by row, and be mapped to successively on the subcarrier, completion interweaves.
Further, the RE number that the size of public interleaving device can write, the number of all subcarriers that equals to be used in the subframe to place control information is divided by the number of public interleaving device, and total number of the CCE that the number of public interleaving device equals to comprise in the subframe is divided by m.
Further, the public interleaving device is a block interleaver, and its columns equals the subcarrier number that a CCE comprises, and line number equals the size of public interleaving device divided by this columns.
In order to solve the problems of the technologies described above, the present invention is based on the above-mentioned control information sending method that is used to realize the control information deinterleaving method of district interference synergic, comprise the steps: before in the step (a) of said control information deinterleaving method
(a1) absolute coding and rate-matched are carried out in the control information of each user equipment (UE), the bit that coding is exported joins end to end, and carries out the cell-specific bit scramble then;
(a2) bit that scrambling is obtained carries out QPSK modulation, and will gather through the symbol of QPSK modulation and obtain CCE, and wherein the size of each CCE is the RE of fixed number;
(c) comprises step afterwards in step:
(d) after mapping process is intact, carries out space diversity, contraryly pay formula conversion conversion fast, add Cyclic Prefix and carry out also-said control information is launched after the string digital-to-analogue conversion.
In order to solve the problems of the technologies described above, the present invention is used to realize the control information de-interweaving method of district interference synergic, comprises the steps:
Total number of the CCE that (a ') user equipment (UE) comprises according to the control channel unit CCE number m in every group that knows and subframe is confirmed the size of the public solution interleaver of current subframe use;
(b ') UE is used for control information from subframe OFDM symbol takes out all and comprises the Resource Unit RE of control information, is written to each public solution interleaver by row one by one;
(c ') UE carries out the contrary shifting processing of cell-specific cyclic shift to the RE in each public solution interleaver, reads successively by row then, obtains CCE all in the subframe, accomplishes deinterleaving.
Further; The RE number that the size of public solution interleaver can be read; The number of all subcarriers that equals to be used in the subframe to place control information is divided by the number of public solution interleaver, and total number of the CCE that the number of public solution interleaver equals to comprise in the subframe is divided by m.
Further, the public solution interleaver is a deinterleaver, and its columns equals the subcarrier number that a CCE comprises, and line number equals the size of public solution interleaver divided by this columns.
In order to solve the problems of the technologies described above, provided by the invention a kind of based on the above-mentioned control information method of reseptance that is used to realize the control information de-interweaving method of district interference synergic, after the step of said control information de-interweaving method (c '), comprise step:
(d ' 1) UE carries out blind Detecting to CCE, till the CCE that finds one's own control information;
(d ' 2) UE carries out the QPSK demodulation with the CCE of one's own control information, carries out the cell-specific bit descrambling then;
The signal of (d ' 3) UE after with descrambling decoded and rate-matched obtains said control information.
In order to solve the problems of the technologies described above, a kind of control information interlaced device of realizing district interference synergic provided by the invention, be used for the base station from the control channel unit CCE to the mapping of Resource Unit RE; This control information interlaced device comprises the public interleaving device size computing unit that connects successively, the shift unit that interweaves, map unit and the public interleaving device that is connected with the shift unit that interweaves; Wherein:
Public interleaving device size computing unit is used for the size according to the number m of the CCE that will write the public interleaving device together and the CCE number calculating public interleaving device that subframe comprises, and offers the shift unit that interweaves;
The shift unit that interweaves carries out the cell-specific cyclic shift respectively to each public interleaving device after being used for m CCE of each group write public interleaving device separately by row, then the RE in the public interleaving device is read by leu;
Map unit is used for that the shift unit that interweaves is read each RE by row and is mapped to subcarrier successively;
The public interleaving device is used for as the storage medium that carries out data interlacing.
Further, the RE number that the size of public interleaving device can write, the number of all subcarriers that equals to be used in the subframe to place control information is divided by the number of public interleaving device, and total number of the CCE that the number of public interleaving device equals to comprise in the subframe is divided by m.
Further, said public interleaving device is a block interleaver, and its columns equals the subcarrier number that a CCE comprises, and line number equals the size of said public interleaving device divided by this columns.
In order to solve the problems of the technologies described above, a kind of control information de-interleaving apparatus of realizing district interference synergic provided by the invention is used for the inverse mapping of UE from RE to CCE; This control information de-interleaving apparatus comprises public solution interleaver size computing unit, deinterleaving shift unit and the public solution interleaver that connects successively; Wherein:
The size of the total number calculating of the CCE public solution interleaver that public solution interleaver size computing unit is used for comprising according to every group of CCE number m knowing and subframe offers the deinterleaving shift unit;
The RE that the deinterleaving shift unit is used for all of taking out from subframe are comprised control information writes each public solution interleaver by row one by one; Then each public solution interleaver is carried out the contrary cyclic shift of cell-specific, the RE in each public solution interleaver is read by row successively obtain CCE all in the subframe again;
The public solution interleaver is used for as the storage medium that carries out data deinterlacing.
Further; The RE number that the size of public solution interleaver can be read; The number of all subcarriers that equals to be used in the subframe to place control information is divided by the number of public solution interleaver, and total number of the CCE that the number of public solution interleaver equals to comprise in the subframe is divided by m.
Further, the public solution interleaver is a deinterleaver, and its columns equals the subcarrier number that a CCE comprises, and line number equals the size of public solution interleaver divided by this columns.
Adopt provided by the invention a kind of control channel interleaving/deinterleaving method and device thereof that is used to realize district interference synergic; Because the big I of public interleaving device changes with the CCE number; Thereby can reach the good result of area interference randomization and interference synergic, and the utilance of system bandwidth and the reliability that the control signaling receives have been improved.
Description of drawings
Fig. 1 is the sketch map that presence of intercell interference is carried out interference synergic through the cell-specific cyclic shift;
Fig. 2 the present invention realizes the mapping process of the control channel deinterleaving method control signaling of district interference synergic;
Fig. 3 is the control channel interlaced device structure principle chart that the present invention realizes district interference synergic;
Fig. 4 the present invention realizes the mapping process of control signaling of the control channel de-interweaving method of district interference synergic;
Fig. 5 is the control channel de-interleaving apparatus structure principle chart that the present invention realizes district interference synergic.
Embodiment
In the mapping process of RE, in order to realize interference randomization and interference synergic, and can utilize bandwidth fully at CCE, the present invention proposes a kind of deinterleaving method, adopt the public interleaving device of variable size, promptly its size can change with the variation of CCE number.Deinterleaving method of the present invention comprises step: (a) in the process of transmitting of Downlink Control Information, divide into groups to all control channel unit CCE that obtain in the sub-frame in the base station, m CCE is divided into one group; (b) the total number of CCE that comprises according to m and subframe is confirmed the size of public interleaving device, guarantees that the information of interleaver output can take the orthogonal frequency division multiplex OFDM symbol that is used for control information in this subframe; (c) m CCE of each group write public interleaving device separately by row, carry out the cell-specific cyclic shift after, read the Resource Unit RE in each public interleaving device by row, be mapped to successively on the subcarrier, completion interweaves.The present invention is based on above-mentioned deinterleaving method and also proposed a kind of de-interweaving method, comprise step: (a ') UE confirms the size of the public solution interleaver of current subframe use according to the number m of CCE in every group that knows and the total number of CCE that subframe comprises; (b ') UE is used for control information from subframe OFDM symbol takes out all and comprises the RE of control information, is written to each public solution interleaver by row one by one; (c ') UE carries out the contrary shifting processing of cell-specific cyclic shift to the RE in each public solution interleaver, reads successively by row then, obtains control channel unit CCE all in the subframe, accomplishes deinterleaving.
Below through specific embodiment and combine accompanying drawing to set forth technique scheme of the present invention in detail.
Public interleaving device size of the present invention according to system bandwidth, pilot tone number, be used to control the shared bit number of number, enhancement mode control channel form indication (E-CCFI, Enhanced-ControlChannel Format Indication) and the ACK/NACK of the OFDM symbol of signaling and the number of CCE is confirmed.
Under the constant situation of the shared bit number of system bandwidth, pilot tone number and E-CCFI and ACK/NACK; Owing to the number of the OFDM symbol that is used to control signaling in the subframe can change along with the variation of the number of CCE, so the change frequency of the change frequency of this public interleaving device size and CCE number is consistent.So in essence, the size of this public interleaving device is that the number along with CCE changes and changes.
The present invention calculates the formula of size of variable public interleaving device according to the CCE number following:
C＝n
RE：
In the formula, the implication of each variable is explained as follows:
R: the line number of interleaver;
C: the columns of interleaver;
M: m CCE is divided into one group interweaves;
N
RE: be (total bandwidth that refers to system) under a certain bandwidth shared subcarrier number in the OFDM symbol;
N: the number that is used to control the OFDM symbol of signaling in the sub-frame;
n
p: a sub-frame is used for the OFDM symbol of control channel, the subcarrier number that pilot tone is shared;
n
E-CCFI: the shared subcarrier number of E-CCFI in the sub-frame;
n
ACK/NACKThe shared subcarrier number of ACK/NACK in one sub-frame;
n
CCE: the CCE number that is contained in the sub-frame;
n
RE: the subcarrier number that CCE comprises has been defined as n
RE=30.
For example, m=3, in other words, one group of 3 CCE gets into interleaver, sees Fig. 1.If total number of CCE is n
CCEIndividual, will be divided into so
Group interweaves, and promptly will use altogether
Individual interleaver.
The control channel deinterleaving method and the device thereof of realization district interference synergic of the present invention
The control channel deinterleaving method flow process of realization district interference synergic of the present invention is as shown in Figure 2, and this flow process has following steps:
Step 110: absolute coding and rate-matched are carried out in the control information to each user;
Wherein the different coding mode is adopted in the control information of different UEs, as using higher code rate, to the lower code rate of UE use of bad channel quality to the good UE of channel quality.Code rate can select 2/3,1/3 and 1/6 for use, corresponding 1,2 and 4 CCE set respectively.
Step 120: the bit of the output of will encoding joins end to end, and to remove the interval between the control information, carries out the cell-specific bit scramble then, that is binds the scrambling mode according to sub-district ID;
Step 130: the bit that scrambling is obtained carries out the QPSK modulation;
Step 140: carry out CCE and divide into groups; By following two the step form:
(1) will gather through the symbol of QPSK modulation and obtain CCE, wherein the size of each CCE is 30REs;
All CCE that (2) will obtain divide into groups, and suppose m CCE is divided into one group;
Step 150: calculate the size of public interleaving device according to the CCE number, carry out sub-district public interleaving and cell-specific cyclic shift then; Specifically be divided into following a few step again:
(1), calculates the size of public interleaving device, the total number of the RE that can write according to the computing formula of above-mentioned public interleaving device size;
(2) each CCE among one group of m CCE is write said public interleaving device by row, present embodiment writes by group successively, does not therefore need to calculate especially the number of public interleaving device;
(3) each public interleaving device is carried out the cell-specific cyclic shift respectively, that is bind the mode of cyclic shift, thereby realize interference randomization and interference synergic according to sub-district ID;
Step 160: carry out the mapping of CCE to RE; By following two the step form:
(1) content in the public interleaving device is read each RE information by row;
(2) will read each block message and be mapped to successively on the subcarrier, advanced line frequency mapping, mapping at once (every row is represented 1 OFDM symbol); Carry out the time domain mapping again, i.e. row mapping;
Notice that have the position of fixing frequency pilot sign (T1 or T2 are according to the number of antennas decision) on each OFDM symbol, it can not be shone upon, promptly meet T1 or the T2 position will be skipped.
Step 170: carry out space diversity, contrary pay formula conversion (IFFT, Inversed Fast FourierTransform) conversion fast, add cyclic prefix CP and carry out also-signal is launched behind the string digital-to-analogue conversion DAC.
The present invention realizes that the structure principle chart of interlaced device of above-mentioned deinterleaving method is as shown in Figure 3.This interlaced device 300 comprises the public interleaving device size computing unit 310 that connects successively, the shift unit 320 that interweaves, map unit 330 and the public interleaving device 340 that is connected with the shift unit 320 that interweaves.Wherein:
Public interleaving device size computing unit 310 offers the said shift unit 320 that interweaves according to the size of number m and the CCE number calculating public interleaving device that a sub-frame comprises of the CCE that will write the public interleaving device together;
After the shift unit 320 that interweaves writes public interleaving device 340 separately with m CCE of each group by row, each public interleaving device 340 is carried out the cell-specific cyclic shift respectively, then the RE in the public interleaving device 340 is read by leu;
Map unit 330 is read the said shift unit that interweaves by row each RE is mapped to the subcarrier that is used for bear control information successively.
Public interleaving device 340 is used for as the storage medium that carries out data interlacing, and a plurality of public interleaving devices can be made up of a plurality of zones in the memory.
The de-interweaving method flow process of control channel deinterleaving method that the present invention is based on above-mentioned realization district interference synergic is as shown in Figure 4, comprises the steps:
Step 210:UE confirms the size of the public solution interleaver of current subframe use according to the number m of CCE in know every group and the total number of CCE that subframe comprises;
The size of the public solution interleaver in the receiving terminal is identical with the public interleaving device of transmitting terminal, uses identical computing formula.
Step 220:UE is used for control information from subframe OFDM symbol takes out all and comprises the Resource Unit RE of control information, is written to each public solution interleaver by row one by one;
Present embodiment also is to write each public solution interleaver successively, therefore also need not to calculate especially the number of public solution interleaver.
Step 230:UE carries out the contrary shifting processing of cell-specific cyclic shift respectively to the RE in each public solution interleaver, reads successively by row then, obtains control channel unit CCE all in the subframe, accomplishes deinterleaving;
Step 240:UE carries out blind Detecting to CCE, till finding one's own control information CCE;
Step 250:UE carries out the QPSK demodulation with CCE;
The signal of step 260:UE after with demodulation carries out the cell-specific bit descrambling;
The signal of step 270:UE after with descrambling decoded and the controlled information of rate-matched.
The present invention realizes that the structure principle chart of de-interleaving apparatus of above-mentioned de-interweaving method is as shown in Figure 5.This de-interleaving apparatus 400 comprises successively the public solution interleaver size computing unit 410 that connects, shift unit 420 and public solution interleaver 430 interweave.Wherein:
Public solution interleaver size computing unit 410 is used for offering said deinterleaving shift unit 420 according to the size of the number m of every group of CCE knowing and the total number calculating of the CCE public solution interleaver that subframe comprises;
The RE that said deinterleaving shift unit 420 is used for all of taking out from subframe are comprised control information writes each public solution interleaver 430 by row one by one; Then each public solution interleaver 430 is carried out the contrary cyclic shift of cell-specific respectively, the RE in each public solution interleaver 430 is read by row successively obtain CCE all in the subframe again;
Public solution interleaver 430 is used for as the storage medium that carries out data deinterlacing, and a plurality of public solution interleavers can be made up of a plurality of zones in the memory.
Adopt control channel interleaving/deinterleaving method and the sending method and the device of realization district interference synergic provided by the invention; Because the big I of public interleaving device changes with the CCE number; Thereby can reach the good result of area interference randomization and interference synergic, and the utilance of system bandwidth and the reliability that the control signaling receives have been improved.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limiting the present invention, anyly has the knack of this art, do not breaking away from the spirit and scope of the present invention; When can doing a little change and retouching, thus protection scope of the present invention when with aforementioned claims the person of being defined be as the criterion.
For example, the present invention is not limited to use in the IMT-advanced system, also can in other ultra 3G or 4G system, use, like Long Term Evolution (LTE, Long Term Evolution) system etc.
Claims (10)
1. a control information deinterleaving method that is used to realize district interference synergic comprises the steps:
(a) in the process of transmitting of Downlink Control Information, dividing into groups to all control channel unit CCE that obtain in the sub-frame in the base station, is about to every m CCE and is divided into one group;
(b) total number of the CCE that comprises according to said m and said subframe is confirmed the size of public interleaving device; Make the Resource Unit RE of the back output that interweaves to take the orthogonal frequency division multiplex OFDM symbol that is used for control information in this subframe; The RE number that the size of said public interleaving device can write; The number of all subcarriers that equals to be used in the said subframe to place control information is divided by the number of said public interleaving device, and total number of the CCE that the number of said public interleaving device equals to comprise in the said subframe is divided by m;
(c) m CCE of each group write public interleaving device separately by row, carry out the cell-specific cyclic shift after, read the RE in each public interleaving device by row, and be mapped to successively on the subcarrier, completion interweaves.
2. according to the described method of claim 1, it is characterized in that said public interleaving device is a block interleaver, its columns equals the subcarrier number that a CCE comprises, and line number equals the size of said public interleaving device divided by this columns.
3. one kind based on the said control information sending method that is used to realize the control information deinterleaving method of district interference synergic of arbitrary claim in the claim 1 to 2, it is characterized in that (a) comprises the steps: before in said step
(a1) absolute coding and rate-matched are carried out in the control information of each user equipment (UE), the bit that coding is exported joins end to end, and carries out the cell-specific bit scramble then;
(a2) bit that scrambling is obtained carries out QPSK modulation, and will gather through the symbol of QPSK modulation and obtain CCE, and wherein the size of each CCE is the RE of fixed number;
(c) comprises step afterwards in said step:
(d) after said mapping process is intact, carries out space diversity, contraryly pay the formula conversion fast, add Cyclic Prefix and carry out also-said control information is launched after the string digital-to-analogue conversion.
4. a control information de-interweaving method that is used to realize district interference synergic comprises the steps:
Total number of the CCE that (a ') user equipment (UE) comprises according to the control channel unit CCE number m in every group that knows and subframe is confirmed the size of the public solution interleaver of current subframe use; The RE number that the size of said public solution interleaver can be read; The number of all subcarriers that equals to be used in the said subframe to place control information is divided by the number of public solution interleaver, and total number of the CCE that the number of said public solution interleaver equals to comprise in the said subframe is divided by m;
(b ') said UE is used for control information from said subframe OFDM symbol takes out all and comprises the Resource Unit RE of control information, is written to each public solution interleaver by row one by one;
(c ') said UE carries out the contrary shifting processing of cell-specific cyclic shift to the RE in said each public solution interleaver, reads successively by row then, obtains CCE all in the said subframe, accomplishes deinterleaving.
5. according to the described method of claim 4, it is characterized in that said public solution interleaver is a deinterleaver, its columns equals the subcarrier number that a CCE comprises, and line number equals the size of said public solution interleaver divided by this columns.
6. one kind based on the said control information method of reseptance that is used to realize the control information de-interweaving method of district interference synergic of arbitrary claim in claim 4 or 5, after said step (c '), comprises step:
(d ' 1) said UE carries out blind Detecting to said CCE, till the CCE that finds one's own control information;
(d ' 2) said UE carries out the QPSK demodulation with the CCE of said one's own control information, carries out the cell-specific bit descrambling then;
The signal of (d ' 3) said UE after with descrambling decoded and rate-matched obtains said control information.
7. control information interlaced device of realizing district interference synergic, be used for the base station from the control channel unit CCE to the mapping of Resource Unit RE; It is characterized in that said control information interlaced device comprises the public interleaving device size computing unit that connects successively, the shift unit that interweaves, map unit and the public interleaving device that is connected with the said shift unit that interweaves; Wherein:
Said public interleaving device size computing unit is used for calculating according to the number m of the CCE that will write said public interleaving device together and CCE number that subframe comprises the size of said public interleaving device, offers the said shift unit that interweaves; The RE number that the size of said public interleaving device can write; The number of all subcarriers that equals to be used in the said subframe to place control information is divided by the number of said public interleaving device, and total number of the CCE that the number of said public interleaving device equals to comprise in the said subframe is divided by m;
The said shift unit that interweaves carries out the cell-specific cyclic shift respectively to each said public interleaving device after being used for m CCE of each group write said public interleaving device separately by row, then the RE in the said public interleaving device is read by leu;
Said map unit is used for that the said shift unit that interweaves is read each RE by row and is mapped to subcarrier successively;
Said public interleaving device is used for as the storage medium that carries out data interlacing.
8. according to the described device of claim 7, it is characterized in that said public interleaving device is a block interleaver, its columns equals the subcarrier number that a CCE comprises, and line number equals the size of said public interleaving device divided by this columns.
9. a control information de-interleaving apparatus of realizing district interference synergic is used for the inverse mapping of UE from RE to CCE; It is characterized in that said control information de-interleaving apparatus comprises public solution interleaver size computing unit, deinterleaving shift unit and the public solution interleaver that connects successively; Wherein:
Said public solution interleaver size computing unit is used for calculating according to the total number of CCE that every group of CCE number m knowing and subframe comprise the size of said public solution interleaver, offers said deinterleaving shift unit; The RE number that the size of said public solution interleaver can be read; The number of all subcarriers that equals to be used in the subframe to place control information is divided by the number of public solution interleaver, and total number of the CCE that the number of said public solution interleaver equals to comprise in the said subframe is divided by m;
The RE that said deinterleaving shift unit is used for all of taking out from said subframe are comprised control information writes each said public solution interleaver by row one by one; Then said each public solution interleaver is carried out the contrary cyclic shift of cell-specific, the RE in said each public solution interleaver is read by row successively obtain CCE all in the subframe again;
Said public solution interleaver is used for as the storage medium that carries out data deinterlacing.
10. according to the described device of claim 9, it is characterized in that said public solution interleaver is a deinterleaver, its columns equals the subcarrier number that a CCE comprises, and line number equals the size of said public solution interleaver divided by this columns.
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