WO2016197472A1 - Procédé et dispositif de traitement de canal physique amélioré de commande en liaison descendante, et support de stockage - Google Patents

Procédé et dispositif de traitement de canal physique amélioré de commande en liaison descendante, et support de stockage Download PDF

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Publication number
WO2016197472A1
WO2016197472A1 PCT/CN2015/089519 CN2015089519W WO2016197472A1 WO 2016197472 A1 WO2016197472 A1 WO 2016197472A1 CN 2015089519 W CN2015089519 W CN 2015089519W WO 2016197472 A1 WO2016197472 A1 WO 2016197472A1
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Prior art keywords
control code
candidate control
epdcch
determining
candidate
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PCT/CN2015/089519
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English (en)
Chinese (zh)
Inventor
周阳
戴笠
邓春华
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深圳市中兴微电子技术有限公司
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Publication of WO2016197472A1 publication Critical patent/WO2016197472A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data

Definitions

  • the present invention relates to a related art of an enhanced physical downlink control channel (ePDCCH) processing in the field of mobile communications, and in particular, to an ePDCCH processing method, apparatus, and storage medium.
  • ePDCCH enhanced physical downlink control channel
  • an ePDCCH channel is proposed in R11.
  • the ePDCCH occupies a part of the resources of the Physical Downlink Shared Channel (PDSCH), and the ePDCCH and the PDSCH work in a frequency division multiplexing manner.
  • PDSCH Physical Downlink Shared Channel
  • the terminal involves blind detection processing in the process of processing the ePDCCH.
  • the complexity of the subsequent blind detection processing is complicated. It is high and inconvenient to implement; it involves the Cyclic Redundancy Check (CRC) process during the blind detection process.
  • CRC Cyclic Redundancy Check
  • the CRC check itself has the possibility of error.
  • providing an ePDCCH processing scheme can not only facilitate the blind detection processing in the ePDCCH processing, but also effectively reduce the probability of false detection and repeated detection, which has become an urgent problem to be solved.
  • the embodiment of the present invention is to provide an ePDCCH processing method and apparatus, which can not only facilitate the blind detection processing in the ePDCCH processing, but also effectively reduce the probability of false detection and repeated detection.
  • An embodiment of the present invention provides an ePDCCH processing method, where the method includes:
  • the determining the RE corresponding to the candidate control code of the ePDCCH bearer includes:
  • performing de-rate matching on the descrambled candidate control code includes:
  • Determining a codeword length M of the descrambled candidate control code If the N times of the codeword length is less than the data amount of the candidate control code channel, the descrambled candidate control code is performed. The rate matching matching processing is performed; if the value of the N*M is greater than or equal to the data amount of the candidate control code channel, the descrambling candidate control code is subjected to de-rate matching and puncturing transparent transmission processing; N is a positive number.
  • the method further includes:
  • the candidate control code data after performing rate dematching is stored, and the amount of data carried by the candidate control code channel is recorded.
  • the method before the de-interleaving and the blind detection processing are performed on the candidate rate control code after the de-rate matching, the method further includes:
  • the candidate control code after performing the de-rate matching puncturing and transparent transmission is punctured and zero-padded.
  • the determining, by the preset decision policy, the validity of the candidate control code that is correctly verified in the blind detection includes:
  • the aggregation degree level of the same candidate control code is further acquired;
  • the candidate control code having a large convolutional decoding output threshold is determined. More effective;
  • the same candidate control code is discarded;
  • the current candidate control code is discarded;
  • the aggregation degree level of the same candidate control code is AL>1, and the degree of aggregation of the current candidate control code is AL>1, it is determined that the candidate control code having a large convolutional decoding output threshold is more effective. .
  • An embodiment of the present invention further provides an ePDCCH processing device, where the device is located at a terminal, where the device includes: a determining module, a first processing module, a second processing module, and a validity determining module;
  • the determining module is configured to determine an RE corresponding to the candidate control code of the ePDCCH bearer
  • the first processing module is configured to descramble the RE corresponding to the candidate control code, and perform de-rate matching on the descrambled candidate control code;
  • the second processing module is configured to perform deinterleaving and blind detection processing on the candidate rate control code after the de-rate matching
  • the validity decision module is configured to perform validity determination on the correct candidate control code in the blind detection according to a preset decision policy.
  • the determining module is configured to determine an antenna port corresponding to the candidate control code of the ePDCCH, and map the candidate control code to the RE of the corresponding antenna port time-frequency resource in the order of the pre-frequency domain and the time domain. Determining an RE corresponding to the candidate control code.
  • the first processing module is configured to determine a codeword length M of the descrambled candidate control code, if the N times of the codeword length is smaller than the data amount of the candidate control code channel.
  • the size of the candidate control code is subjected to de-rate matching combining processing; if the value of the N*M is greater than or equal to the amount of data carried by the candidate control code channel, the candidate control after descrambling
  • the code performs a rate-matching puncturing and transparent transmission process; wherein N is a positive number.
  • the device further includes a storage module configured to store candidate control code data after performing rate dematching, and record data amount carried by the candidate control code channel.
  • the second processing module is further configured to: when determining that the value of the N*M is greater than the amount of data carried by the candidate control code channel, candidate control after performing de-rate matching and puncturing transparent transmission The code is punched and zero-filled.
  • the validity determining module is configured to determine a starting position of a search space of a candidate control code that is correctly verified in the currently obtained blind detection, and a check in the blind detection that has been acquired. Whether the starting position of the correct candidate control code search space is the same. If the starting position of the search space of the current candidate control code is different from the starting position of the search space of other candidate control codes, it is determined that the current candidate control code is valid.
  • the aggregation degree level of the same candidate control code is further acquired;
  • the same candidate control code is discarded;
  • the current candidate control code is discarded;
  • the aggregation degree level of the same candidate control code is AL>1, and the degree of aggregation of the current candidate control code is AL>1, it is determined that the candidate control code having a large convolutional decoding output threshold is more effective. .
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to execute the foregoing ePDCCH processing method in the embodiment of the present invention.
  • the terminal determines the RE corresponding to the candidate control code of the ePDCCH bearer, descrambles the RE corresponding to the candidate control code, and performs the descrambled candidate control code De-rate matching is performed; de-interleaving and blind detection processing are performed on the candidate control codes after the de-rate matching; and the validity of the candidate control codes in the blind detection is determined according to a preset decision policy.
  • the blind detection processing in the ePDCCH processing can be facilitated, and the probability of false detection and repeated detection can be effectively reduced, and is applicable to Wave aggregation technology saves ePDCCH processing time and physical resources.
  • 1 is a schematic diagram of a structure of a transmission resource divided according to a time domain and a frequency domain;
  • FIG. 3 is a schematic flowchart of an ePDCCH processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for processing an ePDCCH according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of an ePDCCH processing apparatus according to an embodiment of the present invention.
  • the maximum time unit is a 10 ms radio frame, which is divided into 10 1 ms subframes, and each subframe is divided into two 0.5.
  • the time slot of ms.
  • each slot consists of 7 OFDM symbols
  • each slot consists of 6 OFDM symbols.
  • every 12 subcarriers constitute one unit resource (using a total of 180 kHz bandwidth). Therefore, one unit resource in the frequency domain and one slot resource in the time domain form a resource block (RB, Resource Block), such as Figure 1, where 11 is a resource block (RB), Resource elements (RE); 12 is the resource element RE(k, l).
  • the location of the physical resource block-pair (PRB-pair, physical resource block-pair) occupied by the ePDCCH is indicated by the RRC (Radio Resource Control).
  • RRC Radio Resource Control
  • Each user terminal UE, User Equipment
  • an enhanced RE group eREG
  • an enhanced control channel element eCCE
  • one eCCE includes 4 Or 8 eREGs.
  • a PRB-pair is fixedly containing 16 eREGs (number: 0 to 15); in each PRB-pair, the first frequency domain is followed by the time domain for all REs (excluding the demodulation reference signal DMRS, as shown in Figure 2)
  • the RE is sequentially numbered from 0 to 15 as shown in FIG.
  • one eREG is composed of all REs having the same number (excluding the Legacy downlink control region, the cell reference signal Cell-RS, and the channel state information reference signal CSI-
  • the RE occupied by the RS) indicates the RE occupied by the CSI-RS, the area filled with the oblique line indicates the RE occupied by the Cell-RS, and the area filled with the horizontal line indicates the occupied by the PCFICH/PHICH/PDCCH.
  • RE the area filled by the shadow indicates the RE occupied by the ePDCCH; this mapping method uniformly distributes the RE resources in one eREG over the entire PRB-pair, and balances the reception performance of all eREGs.
  • the ePDCCH supports two types of resource allocation, that is, there are two types of ePDCCH transmission modes: localized ePDCCH transmission and distributed ePDCCH transmission, and specific transmission mode is adopted by the base station according to the communication link situation.
  • the signal is transmitted to the terminal in the cell by the present invention; wherein the centralized ePDCCH transmission can effectively improve the spectrum efficiency, and the general application is when the base station can obtain reliable channel state information, and the distributed ePDCCH transmission is generally applied to the base station.
  • the robustness of the ePDCCH can be enhanced in the case of relying on channel state information;
  • the ePDCCH set X m , m 1 or 2
  • the eCCE index that can be used for ePDCCH transmission is N ECCE, m, i -1
  • the eREG number corresponding to eCCEn is as follows:
  • PRB-pair index is
  • PRB-pair index is
  • the number of eREGs included in an eCCE The number of eCCEs included in a PRB-pair.
  • the terminal determines the RE corresponding to the candidate control code of the ePDCCH, performs descrambling on the RE corresponding to the candidate control code, and performs de-rate matching on the descrambled candidate control code;
  • the candidate control code is subjected to deinterleaving and blind detection processing; and the validity of the correct candidate control code in the blind detection is determined according to a preset decision strategy.
  • FIG. 3 is a schematic flowchart of a method for processing an ePDCCH according to an embodiment of the present invention. As shown in FIG. 3, an ePDCCH processing method according to an embodiment of the present invention includes:
  • Step 301 The terminal determines an RE corresponding to the candidate control code of the ePDCCH bearer.
  • the types of the candidate control codes include three types: TYPE_A, TYPE_B, and TYPE_C;
  • TYPE_A type candidate control code includes Downlink Control Information (DCI) format 1/DCI format 1B/DCI format 1D/DCI format 2/DCI format 2A/DCI format 2B/DCI format 2C/DCI format 2D;
  • DCI Downlink Control Information
  • the candidate control code of type TYPE_B includes DCI format 0/DCI format 1A;
  • the candidate control code of type TYPE_C contains DCI format 4.
  • the antenna port corresponding to the candidate control code for determining the ePDCCH bearer includes:
  • the antenna port p corresponding to a candidate control code is determined by:
  • n ECCE, low is the minimum index value of the eCCE used by the candidate control code in the ePDCCH set
  • n RNTI is the RNTI value of the candidate control code.
  • Table 2 the antenna port corresponding to the candidate control code in different scenarios is transmitted for the centralized ePDCCH. When the value of n' is determined, the antenna port corresponding to the candidate control code is obtained.
  • Table 3 shows the number of eCCEs used by the corresponding ePDCCH channel in different ePDCCH formats, that is,
  • the antenna port p ⁇ 107, 109 ⁇ corresponding to the candidate control code
  • the antenna port corresponding to the candidate control code is p ⁇ 107,108 ⁇ .
  • the location (k, l) of the RE is the location of the eREG corresponding to the candidate control code. And the location (k, l) of the RE is not occupied by a cell reference signal (Cell-RS, Cell-Reference Signal) and a channel state information reference signal (CSI-RS, Channel State Information-Reference Signal), and the RE
  • Cell-RS Cell-Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the number of the PRB-pair where the RE is located ereg_i is the eREG number where the RE is located, and n is the eCCE number of the RE.
  • the time-frequency of the candidate control code is obtained in the case of centralized ePDCCH transmission.
  • the RE(k, l) of the resource separates the data resources belonging to different candidate control codes to implement demapping of the candidate control code resources.
  • the time-frequency of the candidate and the control code can be obtained in the case of distributed ePDCCH transmission.
  • the RE(k, l) of the resource separates the data resources belonging to different candidate control codes to implement demapping of the candidate control code resources. In this way, the blind detection processing in the subsequent ePDCCH processing is facilitated.
  • the candidate control code of the ePDCCH may be one or more.
  • the resource element RE corresponding to all candidate control codes carried by the ePDCCH is determined.
  • the ePDCCH processing method in the embodiment of the present invention is applicable to a carrier aggregation technology.
  • ePDCCH bearer downlink resource allocation for the component carrier and an uplink resource grant for the corresponding uplink component carrier on each downlink component carrier which is called carrier aggregation independent carrier scheduling;
  • Carrier aggregation cross-carrier scheduling that is, one component carrier
  • the ePDCCH on the wave can schedule resource allocation and data transmission on another component carrier.
  • Step 302 Perform descrambling on the RE corresponding to the candidate control code, and perform de-rate matching on the descrambled candidate control code.
  • the descrambling the RE corresponding to the candidate control code includes:
  • the descrambling code sequence c(n) of the ePDCCH is:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod2;
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod2;
  • the scrambling codes of the respective sets are generated in parallel for the two sets, and the descrambling of the REs corresponding to the candidate control codes is performed on the descrambling of all candidate control codes carried by the ePDCCH, that is, the subordinates
  • the REs of different ePDCCH sets and belonging to different candidate control codes are descrambled.
  • performing rate de-matching on the descrambled candidate control code includes:
  • a codeword length M of the descrambled candidate control code If the N times of the codeword length is less than the data amount of the candidate control code channel, the descrambled candidate control code is performed. The rate matching matching processing is performed; if the value of the N*M is greater than or equal to the data amount of the candidate control code channel, the descrambling candidate control code is subjected to de-rate matching and puncturing transparent transmission processing; M is a positive number; the N is a positive number, and the value of N can be set according to actual needs. In an embodiment, the N is 3.
  • determining the codeword length M of the descrambled candidate control code includes: determining a codeword length M of the descrambled candidate control code according to system parameters such as an LTE system bandwidth and a carrier aggregation type.
  • the method further includes: storing the candidate control code data after the de-rate matching, and recording the data amount carried by the candidate control code channel; specifically, storing the data to the random access memory ( Random Access Memory);
  • the storage is performed after performing the rate matching and combining, which can save physical storage resources.
  • Step 303 Perform deinterleaving and blind detection processing on the candidate rate control code after the de-rate matching.
  • the method further includes:
  • the candidate control code after performing the de-rate matching puncturing and transparent transmission is punctured and zero-padded; that is, when determining When the value of the N*M is greater than the amount of data carried by the candidate control code channel, it may be known that the stored candidate control code data after the de-rate matching is determined by the de-rate matched punctured transparent control code data.
  • the punctured zero padding process needs to be performed, and the number of zero padding is determined according to the recorded data amount of the candidate control code channel and the codeword length of the candidate control code;
  • Performing the puncturing zero-padding process on the candidate control code after performing the de-rate matching puncturing and transparent transmission comprises: performing puncturing and zero-padding processing on each candidate control code after performing the de-rate matching puncturing and transparent transmission, that is, Each candidate control code is serially processed.
  • the deinterleaving the demodulation matched candidate control codes includes:
  • the candidate control codes after the solution rate matching are written in the order of the first column and then the row, and then according to the column.
  • the replacement rule performs column permutation, and then reads out in the order of re-column, completes the de-interleaving process, and implements data rearrangement after de-rate matching, to complete the process of transmitting data in the order sent by the base station for blind detection;
  • the column permutation is mainly implemented according to a deinterleaving matrix, the matrix comprising a fixed 32 columns, and the number of rows of the matrix is determined by the codeword length of the candidate control code.
  • performing blind detection processing on the deinterleaved candidate control code includes:
  • the ePDCCH resource mapping is in units of eCCE.
  • the base station may choose to use the degree of aggregation L ⁇ 1, 2, 4, 8, 16, 32 ⁇ to carry a candidate control code, which is called an eCCE aggregation level (AL, Aggregation Level), the channel state is good (bad), the lower (higher) eCCE aggregation level can be selected; the terminal needs to search for the starting position of the eCCE where the candidate control code is located in the ePDCCH resource region, and also needs to search for the base station to send the candidate control code.
  • the degree of polymerization used, the starting position to the end of the degree of polymerization is called the candidate control code. Search space
  • the determining a search space of the deinterleaved candidate control code includes:
  • n CI is a carrier indicator field (CIF) of the serving cell, ie Serving cell index;
  • the number of candidate control codes on the serving cell ePDCCH set p the degree of aggregation level L, L ⁇ ⁇ 1, 2, 4, 8, 16, 32 ⁇ ;
  • N ECCE,p,k is the downlink subframe k, the total number of eCCEs in the ePDCCH set p;
  • the Y p,k is a pseudo-random parameter, so that the eCCE starting position of the candidate control code can be changed according to the subframe number and the terminal ID, so that the candidate control code between multiple terminals in one downlink subframe can be avoided.
  • the possibility of a conflict is a pseudo-random parameter, so that the eCCE starting position of the candidate control code can be changed according to the subframe number and the terminal ID, so that the candidate control code between multiple terminals in one downlink subframe can be avoided.
  • the de-interleaving and the blind detection processing of the de-rate matched candidate control code are serial processing of the candidate control code after the de-rate matching.
  • the detection process that is, the serial processing of the candidate control code after the de-rate matching; in the carrier aggregation cross-carrier scheduling scenario, the candidate control codes of the multiple serving cells are blindly detected in parallel, which saves the ePDCCH processing time; The blind detection of candidate control codes on each component carrier is serially processed, saving physical area.
  • Step 304 Verify correct candidate control code in the blind detection according to a preset decision policy. Conduct a validity judgment;
  • the step includes: determining whether the starting position of the search space of the correct candidate control code in the currently obtained blind detection is the same as the starting position of the other candidate control code search space in the blind detection that has been acquired, if If the starting position of the search space of the current candidate control code is different from the starting position of the search space of the other candidate control codes, it is determined that the current candidate control code is a valid candidate control code;
  • the aggregation degree level of the same candidate control code is further acquired
  • the same candidate control code is discarded;
  • the current candidate control code is discarded;
  • the aggregation degree level of the same candidate control code is AL>1, and the degree of aggregation of the current candidate control code is AL>1, it is determined that the candidate control code having a large convolutional decoding output threshold is more effective. .
  • the validity decision of the candidate control code for verifying the correctness in the blind detection is a validity decision for the candidate control code of the same DCI type.
  • the ePDCCH processing method in the embodiment of the present invention includes:
  • Step 401 The terminal determines an RE corresponding to the candidate control code carried on the component carrier a.
  • the antenna port corresponding to the candidate control code for determining the ePDCCH bearer on the component carrier a includes: for centralized ePDCCH transmission,
  • n ECCE,low is the minimum index value of the eCCE used by the candidate control code in the ePDCCH set
  • n RNTI is the RNTI value of the candidate control code.
  • the corresponding relationship between the n's and the antenna ports corresponding to the candidate control codes in different scenarios is as shown in Table 2;
  • the antenna port p ⁇ 107, 109 ⁇ corresponding to the candidate control code
  • the antenna port corresponding to the candidate control code is p ⁇ 107,108 ⁇ .
  • mapping the candidate control code to a corresponding antenna port time-frequency resource When the RE is on, the location (k, l) of the RE is the location of the eREG corresponding to the candidate control code, and the location (k, l) of the RE is not occupied by the Cell-RS and the CSI-RS. And the location (k, l) of the RE is located in the ePDCCH starting OFDM symbol or the OFDM symbol after the subframe, and is located before the next subframe.
  • the step is to determine the RE corresponding to all candidate control codes carried by the ePDCCH.
  • Step 402 Perform descrambling on the RE corresponding to the candidate control code, and perform de-rate matching on the descrambled candidate control code.
  • the descrambling the RE corresponding to the candidate control code includes:
  • the descrambling code sequence c(n) of the ePDCCH is:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod2;
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod2;
  • De-rate matching the descrambled candidate control code includes:
  • a codeword length M of the descrambled candidate control code Determining a codeword length M of the descrambled candidate control code. If the N times of the codeword length is less than the data amount of the candidate control code channel, the descrambled candidate control code is performed. The rate matching matching processing is performed; if the value of the N*M is greater than or equal to the data amount of the candidate control code channel, the descrambling candidate control code is subjected to de-rate matching and puncturing transparent transmission processing;
  • the N is a positive number, which can be set according to actual needs. In an embodiment, the N is 3;
  • determining the codeword length M of the descrambled candidate control code includes: determining a codeword length M of the descrambled candidate control code according to system parameters such as an LTE system bandwidth and a carrier aggregation type.
  • Step 403 Store candidate control code data after de-rate matching, and record data amount carried by the candidate control code channel;
  • the storage of the matched candidate control code data is performed when the de-rate matching is performed in the de-rate matching process of the descrambled candidate control code, and the storage is performed after the solution rate matching is performed, thereby saving the physical Storage resources.
  • Step 404 Determine whether the value of N times the codeword length M of the candidate control code after descrambling is greater than the size of the data amount carried by the candidate control code channel, if yes, perform step 405; otherwise, perform step 406;
  • Step 405 performing a puncturing zero-padding process on the candidate control code after performing the de-rate matching puncturing and transparent transmission, and then performing step 406;
  • the step includes: performing a puncturing zero-padding process on each candidate control code after performing the rate-matching puncturing and transparent transmission, that is, performing serial processing on each candidate control code; the number of the zero-padding is based on the recorded location The amount of data carried by the candidate control code channel and the codeword length of the candidate control code are determined.
  • Step 406 Perform deinterleaving and blind detection processing on the candidate control code.
  • the deinterleaving the candidate control code includes: writing the candidate control codes in the order of the first column and the subsequent row, and then performing column permutation according to the column replacement rule, and then reading out in the order of the preceding re-column to complete the de-interleaving process.
  • Performing blind detection processing on the deinterleaved candidate control code includes:
  • Determining a search space of the deinterleaved candidate control code and performing deconvolution decoding, RNTI value demasking, and CRC check processing on the deinterleaved candidate control code in the search space.
  • the de-interleaving and blind detection process of a candidate control code is carried out, that is, the serial processing of the candidate control code after the de-rate matching; in the carrier aggregation cross-carrier scheduling scenario, the candidate control codes of multiple serving cells are blindly detected in parallel
  • the ePDCCH processing time is saved; and the blind detection of the candidate control codes subordinate to each component carrier is serially processed, saving physical area.
  • Step 407 Perform validity determination on the correct candidate control code in the blind detection according to a preset decision policy.
  • the step includes: determining whether the starting position of the search space of the correct candidate control code in the currently obtained blind detection is the same as the starting position of the other candidate control code search space in the blind detection that has been acquired, if If the starting position of the search space of the current candidate control code is different from the starting position of the search space of the other candidate control codes, it is determined that the current candidate control code is a valid candidate control code;
  • the aggregation degree level of the same candidate control code is further acquired
  • the same candidate control code is discarded;
  • the current candidate control code is discarded;
  • the aggregation degree level of the same candidate control code is AL>1, and the degree of aggregation of the current candidate control code is AL>1, it is determined that the candidate control code having a large convolutional decoding output threshold is more effective. .
  • the candidate control code that is correctly verified in the blind detection is valid.
  • the decision is a validity decision for the candidate control code of the same DCI type.
  • Step 408 End the current processing flow.
  • FIG. 5 is a schematic structural diagram of an ePDCCH processing apparatus according to an embodiment of the present invention; the apparatus is applied to a terminal, as shown in FIG. 5, the ePDCCH processing apparatus of the embodiment of the present invention comprises: a determining module 51, a first processing module 52, and a second processing. Module 53 and validity decision module 54; wherein
  • the determining module 51 is configured to determine an RE corresponding to the candidate control code of the ePDCCH bearer
  • the first processing module 52 is configured to descramble the RE corresponding to the candidate control code, and perform de-rate matching on the descrambled candidate control code;
  • the second processing module 53 is configured to perform deinterleaving and blind detection processing on the candidate rate control code after the de-rate matching;
  • the validity decision module 54 is configured to perform validity determination on the correct candidate control code in the blind detection according to a preset decision policy.
  • the determining module 51 is configured to determine an antenna port corresponding to the candidate control code of the ePDCCH, and map the candidate control code to the corresponding antenna port time-frequency resource according to the order of the pre-frequency domain and the time domain. Determine the RE corresponding to the candidate control code on the RE;
  • the determining, by the determining module 51, the antenna port corresponding to the candidate control code of the ePDCCH bearer includes:
  • the determining module 51 is based on Determining the value of n'; wherein n ECCE,low is the minimum index value of the eCCE used by the candidate control code in the ePDCCH set, and the n RNTI is the RNTI value of the candidate control code.
  • the corresponding relationship between the n's and the antenna ports corresponding to the candidate control codes in different scenarios is as shown in Table 2;
  • the time domain starting from the antenna port 107, when the system is configured in the regular cyclic prefix, the antenna port p ⁇ 107, 109 ⁇ corresponding to the candidate control code; when the system is configured to extend the cyclic prefix, the candidate control code corresponds to Antenna port p ⁇ 107,108 ⁇ .
  • the determining module 51 maps the candidate control code to the RE of the corresponding antenna port time-frequency resource in the order of the pre-frequency domain and the time domain, the location of the RE (k, l) a location where the eREG corresponding to the candidate control code is located, and the location (k, l) of the RE is not occupied by the Cell-RS and the CSI-RS, and the location (k, l) of the RE is located in the sub-
  • the intra ePDCCH starts the OFDM symbol or the OFDM symbol after it and is located before the next subframe.
  • the determining module 51 is based on Determining an eCCE number n where the RE corresponding to the candidate control code is located; wherein The number of the PRB-pair where the RE is located, and ereg_i is the eREG number where the RE is located.
  • the first processing module 52 is configured to descramble the RE corresponding to the candidate control code according to the descrambling code sequence c(n) of the ePDCCH;
  • the descrambling code sequence c(n) of the ePDCCH is:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod2;
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod2;
  • the first processing module 52 is configured to determine a codeword length M of the descrambled candidate control code, if the N times of the codeword length is less than the candidate control code channel bearer.
  • the size of the data volume is subjected to de-rate matching combining processing on the descrambled candidate control code; if the value of the N*M is greater than or equal to the amount of data carried by the candidate control code channel, then after descrambling
  • the candidate control code performs de-rate matching puncturing and transparent transmission processing; wherein N is a positive number, in an embodiment, the N is 3;
  • the first processing module 52 is based on a system such as an LTE system bandwidth, a carrier aggregation type, and the like.
  • the parameter determines the codeword length M of the descrambled candidate control code.
  • the apparatus further includes a storage module 55 configured to store candidate control code data subjected to de-rate matching, and record the amount of data carried by the candidate control code channel.
  • the second processing module 53 is further configured to: after determining that the value of the N*M is greater than the amount of data carried by the candidate control code channel, performing de-rate matching and punching through the transparent transmission The candidate control code performs punching and zeroing processing.
  • the second processing module 53 is configured to determine a search space of the deinterleaved candidate control code, and perform convolution decoding on the deinterleaved candidate control code in the search space.
  • the RNTI value is demasked and CRC checked.
  • the validity determining module 54 is configured to determine a starting position of a search space in which a correct candidate control code is verified in the currently obtained blind detection, and other candidates that have been correctly verified in the blind detection that have been acquired. Whether the starting position of the search space of the control code is the same, if the starting position of the search space of the current candidate control code is different from the starting position of the search space of the other candidate control codes, determining that the current candidate control code is a valid candidate control code;
  • the aggregation degree level of the same candidate control code is further acquired;
  • the same candidate control code is discarded;
  • the current candidate control code is discarded;
  • the aggregation degree of the same candidate control code is AL>1, and the current candidate control code is aggregated
  • the joint level AL>1 determines that the candidate control code with a large convolutional decoding output threshold is more effective.
  • the determining module, the first processing module, the second processing module, and the validity determining module proposed in the embodiments of the present invention may be implemented by a processor, and may also be implemented by a specific logic circuit; in practical applications, processing
  • the device can be a central processing unit (CPU), a microprocessor (MPU) or a field programmable gate array (FPGA), etc.; the storage module can be implemented by a memory.
  • the ePDCCH processing method may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • the embodiment of the present invention further provides a computer storage medium, where the computer program is stored with a computer program, and the computer program is used to execute the ePDCCH processing method of the embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de traitement d'un canal physique amélioré de commande en liaison descendante (ePDCCH), le procédé comportant les étapes consistant à: faire déterminer, par un terminal, un élément de ressource (RE) correspondant à un code de commande candidat transporté par un ePDCCH; effectuer un désembrouillage sur le RE correspondant au code de commande candidat, et effectuer une désadaptation de débit sur le code de commande candidat désembrouillé; effectuer un désentrelacement et une détection aveugle sur le code de commande candidat désadapté en débit; et déterminer, selon une politique de détermination prédéfinie, une validité du code de commande candidat franchissant la détection aveugle. L'invention concerne également un dispositif de traitement de ePDCCH et un support de stockage.
PCT/CN2015/089519 2015-06-08 2015-09-14 Procédé et dispositif de traitement de canal physique amélioré de commande en liaison descendante, et support de stockage WO2016197472A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113938257A (zh) * 2021-12-17 2022-01-14 广州慧睿思通科技股份有限公司 物理下行控制信道的检测方法、装置、设备及存储介质
CN115038186A (zh) * 2022-08-09 2022-09-09 杰创智能科技股份有限公司 Lte系统的盲检方法及装置
TWI807921B (zh) * 2017-09-11 2023-07-01 美商高通公司 系統資訊速率匹配

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113572572B (zh) * 2020-04-29 2024-01-30 哲库科技(北京)有限公司 信息处理方法和设备，终端，芯片及存储介质
CN112202530B (zh) * 2020-09-30 2024-03-22 芯象半导体科技(北京)有限公司 信道盲检测方法和装置以及通信装置和存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095396A (zh) * 2011-11-04 2013-05-08 中国移动通信集团公司 对增强物理下行控制信道进行传输和盲检测的方法和装置
WO2013141530A1 (fr) * 2012-03-19 2013-09-26 Samsung Electronics Co., Ltd. Procédé et appareil pour la configuration d'espace de recherche d'un canal de commande de liaison descendante
CN104219036A (zh) * 2014-09-30 2014-12-17 北京北方烽火科技有限公司 Epdcch盲检测方法、资源映射方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101374340B (zh) * 2007-08-23 2012-02-29 中兴通讯股份有限公司 实现小区干扰协同的控制信道交织、解交织方法及其装置
CN101883369B (zh) * 2010-07-06 2012-12-19 新邮通信设备有限公司 一种盲检测方法
CN102255688B (zh) * 2011-07-06 2013-04-10 合肥东芯通信股份有限公司 Ltepdcch盲检控制方法和装置
US9338773B2 (en) * 2012-03-26 2016-05-10 Qualcomm Incorporated Common search space for EPDCCH in LTE
WO2014048503A1 (fr) * 2012-09-28 2014-04-03 Huawei Technologies Co., Ltd. Émission et réception de canal pdcch évolué
CN104683069B (zh) * 2015-02-13 2018-04-27 大唐联仪科技有限公司 一种物理下行控制信道pdcch盲检测方法和系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095396A (zh) * 2011-11-04 2013-05-08 中国移动通信集团公司 对增强物理下行控制信道进行传输和盲检测的方法和装置
WO2013141530A1 (fr) * 2012-03-19 2013-09-26 Samsung Electronics Co., Ltd. Procédé et appareil pour la configuration d'espace de recherche d'un canal de commande de liaison descendante
CN104219036A (zh) * 2014-09-30 2014-12-17 北京北方烽火科技有限公司 Epdcch盲检测方法、资源映射方法及装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI807921B (zh) * 2017-09-11 2023-07-01 美商高通公司 系統資訊速率匹配
CN113938257A (zh) * 2021-12-17 2022-01-14 广州慧睿思通科技股份有限公司 物理下行控制信道的检测方法、装置、设备及存储介质
CN115038186A (zh) * 2022-08-09 2022-09-09 杰创智能科技股份有限公司 Lte系统的盲检方法及装置

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