CN101299745A - Method and device for mapping control channel - Google Patents
Method and device for mapping control channel Download PDFInfo
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- CN101299745A CN101299745A CNA2008101318529A CN200810131852A CN101299745A CN 101299745 A CN101299745 A CN 101299745A CN A2008101318529 A CNA2008101318529 A CN A2008101318529A CN 200810131852 A CN200810131852 A CN 200810131852A CN 101299745 A CN101299745 A CN 101299745A
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Abstract
The invention discloses a mapping method and a device for controlling the channel, wherein the method includes the steps: mapping the CCFI onto the first OFDM symbol, indicating how many OFDM symbols to be used to map the control information by CCFI; interweaving the control information expanded in the E-CCFI to be transmitted; performing the time and frequency two-dimension mapping on the interweaved control information according to the indication of CCFI. The invention reduces the mutual interference between the control information of the adjacent district.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of mapping method and device of control channel.
Background technology
LTE (Long-Term Evolution, Long Term Evolution)/LTE-Advanced system and IMT-Advanced (International Mobile Telecommunications, international mobile communication) system all is with OFDM (Orthogonal Frequency DivisionMultiplexing, OFDM) technology is the basis, in ofdm system, it is the data mode of time-frequency bidimensional, for UE (User Equipment, subscriber equipment) end power saving, control channel adopts TDM (Time Division Multiplex usually, time division multiplexing) mode, that is, control channel and Traffic Channel are separated in time, for example, 14 OFDM symbols are arranged in a subframe, and preceding 3 OFDM symbols are as control channel, and back 11 OFDM symbols are as Traffic Channel.
In existing system, the user who often allow to insert is more, and at first the control channel with present LTE system is that example describes.In the LTE system, descending control signaling mainly comprises following content:
1) CCFI (Control Channel Format Indicator, the indication of control channel form);
2) DL Grant (Down Link Grant, descending scheduling mandate);
3) UL Grant (Up Link Grant, uplink scheduling authorization);
4) HI:HARQ indication (Hybrid Automatic Repeat Request Indication mixes automatic repeat requests indication);
As can be seen, the design of control channel is to be made of different parts, and each part all has its specific function.For convenience of description, define several terms and agreement below:
1) CCFI indicates several OFDM symbols to be used for control channel, and is independent with CCE (ControlChannels Elements, control channel unit); HI is also independent with CCE;
2) be called CCE at the continuous L of a frequency domain subcarrier, CCE can comprise DL Grant and UL Grant;
3) all CCE are the QPSK modulation;
4) each control channel is by a CCE or CCE constitutes;
5) each UE can monitor a series of candidate control channels;
6) number of candidate control channel is the maximum times of blind Detecting;
7) number of candidate control channel is greater than the number of CCE;
8) transmitting-receiving two-end has been stipulated several combinations, for example has only 1,2,4,8 CCE to combine as the candidate control channel;
9) the corresponding different coding speed of 1,2,4,8 combination difference;
Fig. 1 is the schematic diagram according to the transmitter architecture of correlation technique, as shown in Figure 1, hold at Node-B (enode), each UE (UE1 to UEn) control signaling is carried out chnnel coding respectively, carry out the QPSK modulation then, carry out CCE to RE (ResourseElement, subcarrier) forms E-CCFI (Enhanced-Control Channel FormatIndicator, strengthen the indication of control channel form), carry out the subcarrier mapping then, space diversity, carry out IFFT (Inverse Fast Fourier Transform, inverse-Fourier transform) adds CP, parallel/serial DAC, and launch, suppose that this moment, control channel was made of 16 CCE, receiving terminal carries out FFT (Fast Fourier Transform, Fourier transform) after, UE begins to carry out blind Detecting (promptly respectively to CCE1 from being combined as 1 CCE, CCE2, ..., CCE16 carries out blind Detecting), if UE_ID does not monitor success, then carry out blind Detecting (promptly respectively to [CCE1 CCE2] from being combined as 2 CCE, [CCE3 CCE4], ..., [CCE15CCE16]), and the like.If all do not listen to the UE_ID that is complementary with oneself in whole blind detection process, illustrating does not have one's own control signaling to assign this moment, and then UE switches to sleep pattern; If listen to the UE_ID that is complementary with oneself, afterwards according to the corresponding business information of control signal demodulation.Because it is travel through all CCE combined situation, too much for the blind Detecting number of times of some UE as can be seen.
In LTE/LTE-Advanced and IMT-Advanced system, support QPSK, 16QAM, 64QAM modulation system, and much all be identical in the modulation system of a plurality of UE of synchronization, if all launch this information in the control signaling of each UE, so just increased the expense of control signaling.But can be having being placed in the E-CCFI of identical modulation system, content in the E-CCFI comprises the maximum sequence number of the CCE of professional modulation system and correspondence, transmitting terminal corresponds to CCE to each UE with identical services modulation system and only is mapped in the corresponding CCE serial number range, can reduce the blind Detecting time like this; And the CCE of the identical more UE of modulation system this moment is placed on front or centre or back, can further reduces the blind Detecting time of most of UE like this.E-CCFI promptly reduces the control signaling consumption, and can reduce number of times, reduction UE end handling process and the power loss of UE end blind Detecting to a certain extent.
Fig. 2 is that as shown in Figure 2, the control information form of expanding among the E-CCFI is made of two parts according to the schematic diagram of the E-CCFI composition of correlation technique, professional maximum sequence number of CCE and the indication of professional modulation system of adopting different modulation systems respectively, wherein,
CCFI: the number that is used to indicate the shared OFDM symbol of control channel;
N1: the maximum sequence number of CCE under following/up M1 modulation system;
M1: the modulation system of following/Traffic Channel that up frequency of utilization is the highest;
N2: the maximum sequence number of CCE under following/up M2 modulation system;
M2: down/modulation system of the Traffic Channel that up frequency of utilization is time high;
N3: the maximum sequence number of CCE under following/up the 3rd kind of modulation system;
N4: on/descending m1 modulation system under the maximum sequence number of CCE;
M1: on/modulation system of the Traffic Channel that descending frequency of utilization is the highest;
N5: on/descending m2 modulation system under the maximum sequence number of CCE;
M2: on/modulation system of the Traffic Channel that descending frequency of utilization is time high;
N6: on/descending the 3rd kind of modulation system under the maximum sequence number of CCE.
In realizing process of the present invention, the inventor finds that prior art can not avoid the control information of neighbor cell all to be mapped on the identical physical resource, and this has caused increasing the interference of control information.
Summary of the invention
The present invention aims to provide a kind of mapping method and device of control channel, to solve the problem of the control information phase mutual interference of neighbor cell in the prior art.
In an embodiment of the present invention, provide a kind of mapping method of control channel, may further comprise the steps: CCFI is mapped on the 1st the OFDM symbol, and what OFDM sign map control informations the CCFI indication uses; The control information of expanding among the E-CCFI waiting for transmission is interweaved; The mapping of time-frequency bidimensional is carried out in control information after will interweaving according to the indication of CCFI.
Preferably, the control information of expanding among the E-CCFI waiting for transmission is interweaved specifically comprise: correspond to modulation back constellation symbol according to the control information of expanding among the E-CCFI waiting for transmission and add up to M
SymbBe one group according to per 4 constellation symbol and divide into groups that obtaining organizing number is M
Group=M
Symb/ 4; To M
GroupID takes interleaving treatment at the sub-district, and w is counted in the set after interweaving; According to w (i)=w ((i+Cell
ID) mod M
Group) set after obtaining being shifted is w.
Preferably, the control information of 1 OFDM sign map is used in CCFI indication, and the control information after will interweaving according to the indication of CCFI is carried out the mapping of time-frequency bidimensional and specifically comprised: the control information after will interweaving is being mapped on the time domain on the 1st OFDM; The interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Preferably, the control information of 2 OFDM sign map is used in CCFI indication, and the control information after will interweaving according to the indication of CCFI is carried out the mapping of time-frequency bidimensional and specifically comprised: the control information after will interweaving is being mapped on the time domain on the 1st and 2 OFDM; Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Preferably, the control information of 3 OFDM sign map is used in CCFI indication, and the control information after will interweaving according to the indication of CCFI is carried out the mapping of time-frequency bidimensional and specifically comprised: the control information after will interweaving is being mapped on the time domain on the 1st, 2 and 3 OFDM; Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Preferably, also comprise: in the 1st OFDM symbol, demodulate CCFI; The extraction and the deinterleaving that decide the control information of expanding among the E-CCFI according to indication and the sub-district ID of CCFI; Demodulation is carried out in control information to deinterleaving.
Preferably, the control information of 1 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
Preferably, the control information of 2 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st and 2 OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
Preferably, the control information of 3 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st, 2 and 3 OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
In an embodiment of the present invention, also provide a kind of mapping device, having comprised: indicating module, be used for CCFI is mapped to the 1st OFDM symbol, what OFDM sign map control informations the CCFI indication uses; Interleaving block is used for the control information that E-CCFI waiting for transmission expands is interweaved; Mapping block, the mapping of time-frequency bidimensional is carried out in the control information after being used for indication according to CCFI and will interweaving.
The mapping method of above embodiment and device are because can adopt the control information of a plurality of OFDM symbol transmission, and these control informations have been carried out interleaving treatment, so solved the problem of the control information phase mutual interference of neighbor cell in the prior art, reduced the phase mutual interference between the control information of neighbor cell.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram according to the transmitter architecture of correlation technique;
Fig. 2 shows the schematic diagram according to the E-CCFI composition of correlation technique;
Fig. 3 shows the flow chart according to the control channel mapping method of the embodiment of the invention;
Fig. 4 shows the control information resource mapping schematic diagram of expanding among the E-CCFI according to the preferred embodiment of the invention;
Fig. 5 shows the control information resource mapping schematic diagram of expanding among the E-CCFI in the different according to the preferred embodiment of the invention OFDM symbols;
Fig. 6 shows the control information resource mapping schematic diagram of expanding among the E-CCFI in the various ce ll according to the preferred embodiment of the invention;
Fig. 7 shows the block diagram of control channel mapping device according to the preferred embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 3 shows the flow chart according to the control channel mapping method of the embodiment of the invention, may further comprise the steps:
Step S10 is mapped to CCFI on the 1st the OFDM symbol, and what OFDM sign map control informations the CCFI indication uses;
Step S20 interweaves the control information of expanding among the E-CCFI waiting for transmission;
Step S30, the mapping of time-frequency bidimensional is carried out in the control information after will interweaving according to the indication of CCFI.
This mapping method is because can adopt the control information of a plurality of OFDM symbol transmission, and these control informations have been carried out interleaving treatment, so solved the problem of the control information phase mutual interference of neighbor cell in the prior art, reduced the phase mutual interference between the control information of neighbor cell.
Preferably, step S20 specifically comprises: correspond to modulation back constellation symbol according to the control information of expanding among the E-CCFI waiting for transmission and add up to M
SymbBe one group according to per 4 constellation symbol and divide into groups that obtaining organizing number is M
Group=M
Symb/ 4; To M
GroupID takes interleaving treatment at the sub-district, and w is counted in the set after interweaving; According to w (i)=w ((i+Cell
ID) mod M
Group) set after obtaining being shifted is w.More than provided the preferred version of interleaving treatment.
Preferably, the control information of 1 OFDM sign map is used in the CCFI indication, and step S30 specifically comprises: the control information after will interweaving is being mapped on the time domain on the 1st OFDM; The interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Preferably, the control information of 2 OFDM sign map is used in the CCFI indication, and step S30 specifically comprises: the control information after will interweaving is being mapped on the time domain on the 1st and 2 OFDM; Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Preferably, the control information of 3 OFDM sign map is used in the CCFI indication, and step S30 specifically comprises: the control information after will interweaving is being mapped on the time domain on the 1st, 2 and 3 OFDM; Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
Fig. 4 shows the control information resource mapping schematic diagram of expanding among the E-CCFI according to the preferred embodiment of the invention, and the control information after wherein interweaving is mapped to preceding 3 OFDM symbols.Fig. 5 shows the control information resource mapping schematic diagram of expanding among the E-CCFI in the different according to the preferred embodiment of the invention OFDM symbols; Fig. 6 shows the control information resource mapping schematic diagram of expanding among the E-CCFI in the various ce ll according to the preferred embodiment of the invention.
The order of transmitting terminal mapping control information is that CCFI is at first mapped, secondly is the control information mapping of expanding among the E-CCFI.For the mapping of the control information of expanding among the E-CCFI can according to this moment CCFI occurrence carry out the mapping of time-frequency bidimensional, be that its mapping should consider that frequency domain considers time domain again, transmitting terminal adds up to M according to the control information of expanding among the E-CCFI waiting for transmission to deserved modulation back constellation symbol
Symb, be one group according to each 4 constellation symbol and divide into groups that obtaining organizing number is M
Group=M
Symb/ 4, take different interleaving treatment at different sub-district ID then, when carrying out resource mapping (RE:Resource Element mapping), elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of group is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of CCFI sub-carrier resources on the frequency direction in this OFDM symbol, the adjacent area on frequency direction according to the sub-district ID mapping that is shifted.
For receiving terminal, calculate E-CCFI on which concrete subcarrier, carry out demodulation as long as the control information of expanding the E-CCFI extracted from the relevant position according to sub-district ID.
Preferably, this mapping method also comprises: demodulate CCFI in the 1st OFDM symbol; The extraction and the deinterleaving that decide the control information of expanding among the E-CCFI according to indication and the sub-district ID of CCFI; Demodulation is carried out in control information to deinterleaving.
Preferably, the control information of 1 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
Preferably, the control information of 2 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st and 2 OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
Preferably, the control information of 3 OFDM sign map is used in CCFI indication, decides the extraction of the control information of expanding among the E-CCFI specifically to comprise according to indication and the sub-district ID of CCFI: to extract the control information of expanding among the E-CCFI in the 1st, 2 and 3 OFDM symbol; And according to sub-district ID deinterleaving is carried out in the control information of expanding among the E-CCFI and handled.
To sum up, adopt the mapping method and the device of the embodiment of the invention, compared with prior art, the conflict between the control information resource mapping of having avoided expanding among the E-CCFI of adjacent area can reach the purpose that reduces the control information adjacent area interference of expanding among the E-CCFI.Even as can be seen for less bandwidth situation, when promptly resource had conflict, interleaving treatment also can reach the effect of interference randomization and interference synergic.
Fig. 7 shows the block diagram of control channel mapping device according to the preferred embodiment of the invention, comprising:
Indicating module 10 is used for CCFI is mapped to the 1st OFDM symbol, and what OFDM sign map control informations the CCFI indication uses;
Interleaving block 20 is used for the control information that E-CCFI waiting for transmission expands is interweaved;
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the mapping method of a control channel is characterized in that, may further comprise the steps:
On 1 OFDM symbol of control channel form indication map to the, what OFDM symbols mapping control information is used in described control channel form indication indication;
The control information of expansion in the enhancing control channel form indication waiting for transmission is interweaved;
Carrying out the time-frequency bidimensional according to the indication of the described control channel form indication control information after with described interweaving shines upon.
2. mapping method according to claim 1 is characterized in that, the control information of expansion in the enhancing control channel form indication waiting for transmission is interweaved specifically to be comprised:
Correspond to modulation back constellation symbol according to the control information of expanding in the described enhancing control channel form indication waiting for transmission and add up to M
Symb
Be one group according to per 4 constellation symbol and divide into groups that obtaining organizing number is M
Group=M
Symb/ 4;
To M
GroupID takes interleaving treatment at the sub-district, and w is counted in the set after interweaving;
According to w (i)=w ((i+cell
ID) mod M
Group) set after obtaining being shifted is w.
3. mapping method according to claim 1, it is characterized in that, 1 OFDM symbol mapping control information is used in described control channel form indication indication, carries out the time-frequency bidimensional according to the indication of the described control channel form indication control information after with described interweaving and shines upon and specifically comprise:
Control information after described interweaving is mapped to the 1st orthogonal frequency division multiplexing on time domain use;
The interval of organizing on the frequency direction is according to removing the remaining subcarrier five equilibrium of pilot sub-carrier and control channel form indication sub-carrier resources in this OFDM symbol, the adjacent area mapping that on frequency direction, is shifted, and shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
4. mapping method according to claim 1, it is characterized in that, 2 OFDM symbols mapping control informations are used in described control channel form indication indication, carry out the time-frequency bidimensional according to the indication of the described control channel form indication control information after with described interweaving and shine upon and specifically comprise:
Control information after described interweaving is mapped to the 1st and 2 orthogonal frequency division multiplexing on time domain use;
Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of control channel form indication sub-carrier resources in this OFDM symbol, the adjacent area mapping that is shifted on frequency direction, shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
5. mapping method according to claim 1, it is characterized in that, 3 OFDM symbols mapping control informations are used in described control channel form indication indication, carry out the time-frequency bidimensional according to the indication of the described control channel form indication control information after with described interweaving and shine upon and specifically comprise:
Control information after described interweaving is mapped to the 1st, 2 and 3 orthogonal frequency division multiplexing on time domain use;
Elder generation's mapping time/frequency direction, back mapped frequency/time orientation, the interval of organizing on the frequency direction is according to removing pilot sub-carrier and the remaining subcarrier five equilibrium of control channel form indication sub-carrier resources in this OFDM symbol, the adjacent area mapping that is shifted on frequency direction, shift intervals is according to Interval=Cell
ID* the Shift formula carries out shifting processing, and wherein Shift represents basic displacement.
6. mapping method according to claim 1 is characterized in that, also comprises:
In the 1st OFDM symbol, demodulate described control channel form indication;
Indication and sub-district ID according to described control channel form indication decide extraction and the deinterleaving that strengthens the control information of expansion in the indication of control channel form;
Demodulation is carried out in control information to described deinterleaving.
7. mapping method according to claim 6, it is characterized in that, 1 OFDM symbol mapping control information is used in described control channel form indication indication, and the indication and the sub-district ID that indicate according to described control channel form decide the extraction that strengthens the control information of expansion in the indication of control channel form specifically to comprise:
In the 1st OFDM symbol, extract the control information of expansion in the described enhancing control channel form indication;
And according to sub-district ID deinterleaving is carried out in the control information of expansion in the described enhancing control channel form indication and handled.
8. mapping method according to claim 6, it is characterized in that, 2 OFDM symbol mapping control informations are used in described control channel form indication indication, and the indication and the sub-district ID that indicate according to described control channel form decide the extraction that strengthens the control information of expansion in the indication of control channel form specifically to comprise:
In the 1st and 2 OFDM symbol, extract the control information of expansion in the described enhancing control channel form indication;
And according to sub-district ID deinterleaving is carried out in the control information of expansion in the described enhancing control channel form indication and handled.
9. mapping method according to claim 6, it is characterized in that, 3 OFDM symbol mapping control informations are used in described control channel form indication indication, and the indication and the sub-district ID that indicate according to described control channel form decide the extraction that strengthens the control information of expansion in the indication of control channel form specifically to comprise:
In the 1st, 2 and 3 OFDM symbol, extract the control information of expansion in the described enhancing control channel form indication;
And according to sub-district ID deinterleaving is carried out in the control information of expansion in the described enhancing control channel form indication and handled.
10. the mapping device of a control channel is characterized in that, comprising:
Indicating module is used for 1 OFDM symbol of control channel form indication map to the, and what OFDM symbols mapping control information is used in described control channel form indication indication;
Interleaving block is used for the control information of enhancing control channel form indication expansion waiting for transmission is interweaved;
Mapping block is used for indication according to the indication of the described control channel form control information after with described interweaving and carries out the time-frequency bidimensional and shine upon.
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| CN102281247B (en) * | 2011-08-26 | 2017-12-29 | 中兴通讯股份有限公司 | A kind of control channel resource allocation method and system |
| WO2018108048A1 (en) * | 2016-12-15 | 2018-06-21 | 华为技术有限公司 | Communication method, base station and terminal device |
| US10938528B2 (en) | 2016-12-15 | 2021-03-02 | Huawei Technologies Co., Ltd. | Communication method, base station, and terminal device |
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