CN102957494A - Method for blind test calibration and related devices - Google Patents

Abstract

The embodiment of the invention discloses a blind detection verification method and a related device, which are used to quickly complete the blind detection verification of downlink control information. The method in the embodiment of the present invention includes: acquiring decoded N-bit downlink control information; performing a cyclic redundancy check code (CRC) check on N minus M-bit downlink control information to obtain an M-bit CRC check result, where M is CRC The number of check digits, the M is an integer greater than 1, and the N is greater than M; the wireless network temporary identification RNTI is masked on the M-bit CRC check result, and the M-bit RNTI masking result is obtained; the M-bit RNTI The masking result is compared with the last M bits in the N-bit downlink control information. If they are the same, the blind detection is successful; if they are not the same, the blind detection fails. In addition, the present invention also provides related devices for realizing the method.

Description

A kind of blind test verification method and related device

technical field

The present invention relates to the communication field, in particular to a blind detection method and a related device.

Background technique

The downlink control information (DCI, Downlink Control Information) is transmitted in the downlink physical control channel (PDCCH, Physical Downlink Control Channel) under the Long Term Evolution (LTE, Long Term Evolution) protocol. Since the user equipment (UE, User Equipment) generally I don't know what type of information the DCI is currently transmitting, and I don't know where the information I need is located. But the UE knows what information it is currently expecting. For example, the information expected by the UE in the idle (Idle) state is paging, SI; after initiating Random Access (Random Access), it is expecting RACH Response; when there is uplink data waiting to be sent When looking forward to UL Grant et al. For different expected information, the UE uses the corresponding radio network temporary identifier (RNTI, radio network temporary identifier) and the control channel element (CCE, Control Channel Element) information (the basic unit that bears DCI is CCE) as a cyclic redundancy check code (CRC, Cyclic Redundancy Check) verification, if the CRC verification is successful, then the UE knows that this information is what it needs, and also knows the corresponding DCI type, so as to further decipher the DCI content, which is the process of blind detection.

After the sender of the downlink control information determines the relevant data, the downlink control information is encoded, CRC checked, RNTI masked, and rate matched in sequence, and the downlink control information after the above processing is mapped to the air interface resource for transmission .

In the prior art, if the UE needs to receive the above-mentioned downlink control information, it needs to perform blind detection on the downlink control information, that is, search for the location of the downlink control information in the calculated search space, and control the downlink at the location The information is decoded, and the RNTI unmasking and CRC check are performed on the decoded downlink control information in turn. If the values of the downlink control message are all zero after the CRC check, the blind detection at the UE side is successful.

In the prior art, when checking the result of blind detection, the check is performed according to the reverse operation of the sender, that is, the RNTI unmasking is performed on the decoded downlink control information first, and then a CRC check is performed on the result of each RNTI unmasking. The UE needs to unmask each RNTI value once. If it is necessary to unmask the RNTI for A times of blind detection results, it needs to perform A×B (B is the number of RNTI) CRC checks; obviously, any With the increase of the number of blind detection and the number of RNTIs, the number of CRC checks will also increase sharply, which greatly increases the processing delay.

Contents of the invention

Embodiments of the present invention provide a blind detection verification method and a related device for quickly completing blind detection verification of downlink control information.

The blind detection verification method provided by the present invention includes: obtaining the decoded N-bit downlink control information; performing a cyclic redundancy check code CRC check on the N minus M-bit downlink control information to obtain an M-bit CRC check result, The M is the number of CRC check digits, the M is an integer greater than 1, and the N is greater than M; performing wireless network temporary identification RNTI masking on the M-bit CRC check result to obtain an M-bit RNTI masking result ; Comparing the M-bit RNTI masking result with the last M bits in the N-bit downlink control information, if they are the same, the blind detection is successful; if they are not the same, the blind detection fails.

The blind detection verification method provided by the present invention includes: obtaining the decoded N-bit downlink control information; performing a cyclic redundancy check code CRC check on the N minus M-bit downlink control information to obtain an M-bit CRC check result, The M is a CRC check digit, the M is an integer greater than 1, and the N is greater than M; performing RNTI unmasking on the last M bits in the N-bit downlink control information to obtain an M-bit RNTI unmasking result; Comparing the M-bit RNTI demasking result with the M-bit CRC check result, if they are the same, the blind detection is successful; if they are not the same, the blind detection fails.

The blind detection verification device provided by the present invention includes: an acquisition unit for obtaining decoded N-bit downlink control information; a verification unit for performing a cyclic redundancy check code (CRC) on N minus M-bit downlink control information Checking, to obtain M-bit CRC check results, the M is the number of CRC check digits, the M is an integer greater than 1, and the N is greater than M; a masking unit is used to check the M-bit CRC As a result, the wireless network temporary identifier RNTI is masked to obtain the M-bit RNTI masking result; the comparison unit is used to compare the M-bit RNTI masking result with the last M bits in the N-bit downlink control information, if If they are the same, the blind detection is successful; if not, the blind detection fails.

The blind detection verification device provided by the present invention includes: an acquisition unit for obtaining decoded N-bit downlink control information; a verification unit for performing a cyclic redundancy check code (CRC) on N minus M-bit downlink control information Checking, to obtain M-bit CRC check results, the M is the number of CRC check digits, the M is an integer greater than 1, and the N is greater than M; the unmasking unit is used for the N-bit downlink control information The last M bits in the RNTI unmasking are performed to obtain the M-bit RNTI unmasking results; the blind detection judgment unit is used to compare the M-bit RNTI unmasking results with the M-bit CRC check results, and if they are the same, If they are not the same, the blind detection fails.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages: when the present invention performs CRC check on the downlink control information, first remove the CRC check bit of the downlink control information (that is, only the downlink of N minus M bits) CRC check of the control information), so that the blind check can also be completed without performing RNTI demasking in the process of blind check. Since the UE performs the CRC check first, and performs RNTI unmasking, in the case where A blind check results need to be checked, the UE only needs to perform A CRC checks, which effectively reduces the processing time. The time delay improves the efficiency of blind detection verification.

Description of drawings

Fig. 1 is a schematic flow chart of the blind detection verification method in the embodiment of the present invention;

Fig. 2 is a signaling flowchart of the blind detection verification method in the embodiment of the present invention;

Fig. 3 is the structural representation of CRC checking circuit in the embodiment of the present invention;

Fig. 4 is another schematic flow chart of the blind detection verification method in the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a blind detection verification device in an embodiment of the present invention;

Fig. 6 is another structural schematic diagram of the blind detection verification device in the embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide a blind detection verification method and a related device for quickly completing blind detection verification of downlink control information.

Referring to Fig. 1, an embodiment of the blind detection method in the embodiment of the present invention includes:

101. The UE side acquires the decoded N-bit downlink control information;

The UE side obtains the decoded N-bit downlink control information, and the specific value of N (that is, the data length of the downlink control information) is determined by the sender of the downlink control information.

Assume that the original downlink control message has K bits. After encoding the K-bit downlink control message, the sender first performs CRC check on the encoded downlink control message to obtain the M-bit CRC check result, where M is the CRC check result. Check the number of digits, the M value depends on the number of registers in the CRC check circuit, M is an integer greater than 1, and N is greater than M; then, perform RNTI masking on the M-bit CRC check result to obtain M-bit RNTI masking Result; finally, after adding the M-bit RNTI masking result to the encoded K-bit downlink control message, N-bit downlink control information is obtained, and the N-bit downlink control information is mapped to air interface resources for transmission; the above K and M are all positive integers, and K+M=N.

The UE searches for the location of the N-bit downlink control information in the calculated search space, decodes the N-bit downlink control information at the location, and obtains the decoded N-bit downlink control information.

102. The UE performs a CRC check on the downlink control information of N minus M bits;

The UE performs a CRC check on the N minus M-bit downlink control information to obtain an M-bit CRC check result, where M is the number of CRC check digits and is a positive integer smaller than N.

The above CRC verification method is consistent with the CRC verification method of the sending end. In practical applications, the sending end can send the specific CRC verification method to the receiving end in the form of a transmission message, or when the CRC verification method is preset, The CRC checking methods of the sending end and the UE end are preset to be the same, and the specific implementation manner is not limited here.

In the embodiment of the present invention, when performing the CRC check, the CRC check bit of the downlink control information is first removed (because the CRC check of the UE end is consistent with that of the sending end, the length of the CRC check bit can also be known), so that In the process of blind detection and verification, there is no need to perform RNTI unmasking first, and the M-bit CRC check result obtained after the original K (ie, N minus M)-bit downlink control information is CRC-checked at the sending end.

103. The UE performs RNTI masking on the M-bit CRC check result;

The UE performs RNTI masking on the M-bit CRC check result to obtain the M-bit RNTI masking result.

The RNTI masking method at the UE side is also the same as the RNTI masking method used at the sending end.

104. The UE side compares the masking result of the M-bit RNTI with the last M bits in the N-bit downlink control information.

The UE side compares the M-bit RNTI masking result with the last M bits in the decoded N-bit downlink control information. If they are the same, the blind detection succeeds. If they are not the same, the blind detection fails.

Since the M-bit CRC check result obtained above is consistent with the M-bit CRC check result obtained by the sender, as long as the M-bit CRC check result is masked according to the RNTI masking process performed by the sender, the obtained M The RNTI masking result of the 1-bit RNTI and the RNTI masking result of the sender will be the same, and the RNTI masking result of the sender is appended after the K-bit downlink control message, that is, the last M bits of the N-bit downlink control message. Therefore, as long as the UE There is no error in the decoding at the end, and the correct downlink control information is blindly detected at the UE end, then the M-bit RNTI masking result must be the same as the last M bits in the decoded N-bit downlink control information.

The present invention first removes the CRC check bit of the downlink control information when performing CRC check on the downlink control information (that is, only performs CRC check on the downlink control information of N minus M bits), so that in the process of blind check check Blind detection verification can also be completed without performing RNTI demasking first. Since the UE performs the CRC check first, and then performs RNTI unmasking, in the case where A blind check results need to be checked, the UE only needs to perform A CRC checks, which effectively reduces the processing time. The time delay improves the efficiency of blind detection verification.

The blind detection verification method of the present invention is described below from the sending end of the downlink control information to the UE end. Another embodiment of the blind detection verification method in the embodiment of the present invention includes:

201. The sending end determines the location of the CCE resource where the downlink control information is located;

The sending end determines the aggregation level (L) to be used when sending the downlink control information according to the resource usage, and then calculates the position of the CCE resource where the downlink control information is located according to the RNTI value and the subframe number information.

202. The sending end sequentially encodes the downlink control information;

After determining the position of the CCE resource where the above-mentioned downlink control information is located, the sending end determines the opportunity number m according to the current resource usage; the sending end then encodes and rate-matches the downlink control information in sequence according to the above-mentioned aggregation level L and opportunity number m, A data stream carrying K-bit downlink control information is obtained.

203. The sending end performs a CRC check on the downlink control information;

The sending end performs a CRC check on the K-bit downlink control information to obtain an M-bit CRC check result, where M is the number of CRC check digits, and K and M are both positive integers.

Assuming that the K value is 57, the determined CRC check digit is 16 bits, and the generator polynomial of the 16-bit CRC check circuit is: g _CRC16 (D)=[D ¹⁶ +D ¹² +D ⁵ +1]for a CRC length L =16

The above-mentioned polynomial corresponds to Fig. 3 in the embodiment of the present invention, and the above-mentioned length L is an aggregation level, and D in the above-mentioned formula is an input delay beat, such as: D ¹⁶ represents a delay of 16 beats;

The specific process for the sending end to perform CRC check on the 57-bit downlink control information is as follows:

First, the sending end establishes a 16-bit CRC check circuit, which includes 16 registers, from right to left, as shown in Figure 3, and the 16 registers correspond to D15 to D0 in the figure; among the 16 registers , the right side of the register with a bit value of 1 has an exclusive OR circuit;

Then, the above-mentioned 57-bit downlink control information enters the CRC check circuit from the far left in FIG. 3 , one bit at a time, and each time the next bit enters, the bit in the register is shifted to the right by one bit. After the XOR of the XOR circuit, it enters the next bit; the rightmost register sends bits to the XOR circuit as the second operand; initially, the registers are all zero, and the incoming downlink control information starts from the first bit The register starts and ends with the register entering the last bit. At this time, the content in the 16-bit register is the 16-bit CRC check result of the 57-bit downlink control information.

The application scenarios in the embodiments of the present invention are described above using only some examples, and it can be understood that in actual applications, there may be more application scenarios, which are not specifically limited here.

204. The sending end performs RNTI masking on the CRC check result;

The sending end performs RNTI masking on the above-mentioned M-bit CRC check result, and adds the M-bit RNTI masking result to the above-mentioned K-bit encoded downlink control information to obtain N (K+M=N)-bit downlink control information. control information.

205. The sending end sends N-bit downlink control information to the UE;

The transmitting end performs modulation and resource mapping on the above N-bit downlink control information, maps the processed N-bit downlink control information to air interface resources, and sends it to the UE.

206. The UE searches for N-bit downlink control information on the air interface resource;

The UE side calculates the search space of the N-bit downlink control information in the PDCCH according to the current RNTI value, and then searches the N-bit downlink control information according to the calculated search space (that is, the blind detection process).

207. The UE side decodes the N-bit downlink control information;

The UE side decodes the searched N-bit downlink control information to obtain the decoded N-bit downlink control information.

208. The UE performs a CRC check on the downlink control information of N minus M bits;

The UE side uses the CRC check circuit at the sending end to perform CRC check on the N minus M-bit downlink control information, and obtains the M-bit CRC check result.

In the embodiment of the present invention, when performing the CRC check, the CRC check bit of the downlink control information is first removed (because the CRC check of the UE end is consistent with that of the sending end, the length of the CRC check bit can also be known), so that In the process of blind detection and verification, there is no need to perform RNTI unmasking first, and the M-bit CRC check result obtained after the original K (ie, N minus M)-bit downlink control information is CRC-checked at the sending end.

209. The UE side performs RNTI masking on the M-bit CRC check result;

The UE performs RNTI masking on the M-bit CRC check result to obtain the M-bit RNTI masking result.

The RNTI masking method at the UE side is also the same as the RNTI masking method used at the sending end.

210. The UE side compares the masking result of the M-bit RNTI with the last M bits in the N-bit downlink control information.

The UE side compares the M-bit RNTI masking result with the last M bits in the decoded N-bit downlink control information. If they are the same, the blind detection succeeds. If they are not the same, the blind detection fails.

In the above-mentioned embodiment, what the UE side compares in the blind detection check is the CRC check bit after the masking of the sending end, but in practical applications, the UE side can also compare the CRC check bit before masking, and the same can be realized For the blind detection and verification of downlink control information, please refer to FIG. 4. Another embodiment of the blind detection and verification method in the embodiment of the present invention includes:

401. The UE side acquires the decoded N-bit downlink control information;

The UE side obtains the decoded N-bit downlink control information, and the specific value of N is determined by the sender of the downlink control information.

Assume that the original downlink control message has K bits. After encoding the K-bit downlink control message, the sender first performs CRC check on the encoded downlink control message to obtain the M-bit CRC check result, where M is the CRC check result. Check the number of digits, the M value depends on the number of registers in the CRC check circuit, M is an integer greater than 1, and N is greater than M; then, perform RNTI masking on the M-bit CRC check result to obtain M-bit RNTI masking Result; finally, after adding the M-bit RNTI masking result to the encoded K-bit downlink control message, N-bit downlink control information is obtained, and the N-bit downlink control information is mapped to air interface resources for transmission; the above K and M are all positive integers, and K+M=N.

The UE searches for the location of the N-bit downlink control information in the calculated search space, decodes the N-bit downlink control information at the location, and obtains the decoded N-bit downlink control information.

402. The UE performs a CRC check on the downlink control information of N minus M bits;

The UE performs a CRC check on the N minus M-bit downlink control information to obtain an M-bit CRC check result, where M is the number of CRC check digits and is a positive integer smaller than N.

The above CRC check method is consistent with the CRC check of the sender. In practical applications, the sender can send the specific CRC check method to the sender in the form of a transmission message, or when the CRC check method is preset, The CRC checking methods of the sending end and the UE end are preset to be the same, and the specific implementation manner is not limited here.

The specific process of performing CRC check on the downlink control information of N minus M bits may be as follows:

Establish a verification circuit composed of M registers, the initial value of the M registers is 0; input the above N minus M bit downlink control information into the verification circuit in turn, when the N minus M bit downlink control information has completely passed the CRC After the processing of the verification circuit, the current values in the M registers are used as the M-bit CRC verification result.

In the embodiment of the present invention, when the CRC check is performed, the CRC check bit of the downlink control information is removed first, so that the original K-bit downlink control information can be obtained without first performing RNTI unmasking during the blind check check process. The M-bit CRC check result obtained after the information is checked by the sender.

403. Perform RNTI unmasking on the last M bits in the N-bit downlink control information at the UE end;

The UE performs RNTI unmasking on the last M bits of the above N-bit downlink control information to obtain an M-bit RNTI unmasking result.

Since the sending end appends the masked M-bit CRC check result to the K-bit downlink control message, after directly performing RNTI unmasking on the last M bits of the above N-bit downlink control information, the sending end M-bit CRC check result before masking.

404. The UE side compares the M-bit RNTI demasking result with the M-bit CRC check result.

The UE side compares the M-bit RNTI unmasking result obtained in step 403 with the M-bit CRC check result obtained in step 402. If they are the same, the blind detection is successful; if they are not the same, the blind detection fails.

The CRC check is performed on the decoded N minus M-bit downlink control information at the UE side. Compared with the CRC check performed on the original K-bit downlink control information at the sending end, the obtained M-bit CRC check is also consistent, so , and directly compare the M-bit RNTI demasking result with the M-bit CRC check result, it can also realize the blind check check of the downlink control information, and at the same time, it will not cause problems due to the decoding of the overall N-bit downlink control information first. A large amount of processing delay caused by masking.

The following describes an embodiment of the blind detection verification device of the present invention for performing the above-mentioned blind detection verification method. Please refer to FIG. 5 for its logical structure. An embodiment of the blind detection verification device in the embodiment of the present invention includes:

An acquiring unit 501, configured to acquire decoded N-bit downlink control information;

The checking unit 502 is configured to perform a cyclic redundancy check code CRC check on N minus M-bit downlink control information to obtain an M-bit CRC check result, where M is an integer greater than 1, and N is greater than M;

The masking unit 503 is used to mask the wireless network temporary identifier RNTI on the M-bit CRC check result to obtain the M-bit RNTI masking result;

The comparison unit 504 is configured to compare the above-mentioned M-bit RNTI masking result with the last M bits of the above-mentioned N-bit downlink control information. If they are the same, the blind detection is successful; if they are not the same, the blind detection fails.

The verification unit 502 in the embodiment of the present invention may include:

The circuit establishment module 5021 is used to establish a verification circuit composed of M registers, the initial value of the M registers is 0;

The input verification module 5022 is used to sequentially input the downlink control information of N minus M bits into the verification circuit, and when the downlink control information of N minus M bits is completely processed by the verification circuit, the current values of the M registers are used as M-bit CRC check result.

The specific interaction process of each unit in the blind detection verification device of the embodiment of the present invention is as follows:

The obtaining unit 501 obtains the decoded N-bit downlink control information, and the specific value of N (that is, the data length of the downlink control information) is determined by the sender of the downlink control information.

The verification unit 502 performs CRC verification on N minus M-bit downlink control information to obtain an M-bit CRC verification result, where M is the number of CRC verification digits and is a positive integer smaller than N.

The above CRC check method is consistent with the CRC check of the sender. In practical applications, the sender can send the specific CRC check method to the sender in the form of a transmission message, or when the CRC check method is preset, The CRC checking methods of the sending end and the UE end are preset to be the same, and the specific implementation manner is not limited here. In the embodiment of the present invention, when performing the CRC check, the CRC check bit of the downlink control information is first removed (because the CRC check of the UE end is consistent with that of the sending end, the length of the CRC check bit can also be known), so that In the process of blind detection and verification, there is no need to perform RNTI unmasking first, and the M-bit CRC verification result obtained after the original K (ie, N minus M)-bit downlink control information is CRC-checked at the sending end.

The verification unit 502 performs CRC verification on the downlink control information of N minus M bits, which may specifically include: the circuit establishment module 5021 establishes a verification circuit composed of M registers, and the initial value of the M registers is 0; and then input to the verification module 5022 The downlink control information of N minus M bits is sequentially input into the verification circuit, and when the downlink control information of N minus M bits is completely processed by the verification circuit, the current values of the M registers are used as the result of the M-bit CRC verification.

After obtaining the M-bit CRC check result, the masking unit 503 performs RNTI masking on the M-bit CRC check result to obtain the M-bit RNTI masking result, the RNTI masking method of the UE end and the RNTI masking method used by the sending end same. Finally, the comparison unit 504 compares the M-bit RNTI masking result with the last M bits of the decoded N-bit downlink control information. If they are the same, the blind detection is successful; if not, the blind detection fails.

Since the M-bit CRC check result obtained above is consistent with the M-bit CRC check result obtained by the sender, as long as the M-bit CRC check result is masked according to the RNTI masking process performed by the sender, the obtained M The RNTI masking result of the 1-bit RNTI and the RNTI masking result of the sender will be the same, and the RNTI masking result of the sender is appended after the K-bit downlink control message, that is, the last M bits of the N-bit downlink control message. Therefore, as long as the UE There is no error in the decoding at the end, and the correct downlink control information is blindly detected at the UE end, then the M-bit RNTI masking result must be the same as the last M bits in the decoded N-bit downlink control information.

Please refer to FIG. 6, another embodiment of the blind detection verification device in the embodiment of the present invention includes:

An acquisition unit 601, configured to acquire decoded N-bit downlink control information;

The verification unit 602 is used to perform cyclic redundancy check code CRC verification on N minus M-bit downlink control information to obtain M-bit CRC verification results, where M is the number of CRC check digits, and M is a positive integer less than N;

The unmasking unit 603 is configured to perform RNTI unmasking on the last M bits of the above N-bit downlink control information to obtain an M-bit RNTI unmasking result;

The blind detection judging unit 604 is configured to compare the M-bit RNTI demasking result with the M-bit CRC check result. If they are the same, the blind detection is successful; otherwise, the blind detection fails.

The verification unit in the embodiment of the present invention may include:

The circuit establishment module 6021 is used to establish a verification circuit composed of M registers, the initial value of the M registers is 0;

The input verification module 6022 is used to sequentially input the downlink control information of N minus M bits into the verification circuit, and when the downlink control information of N minus M bits is completely processed by the verification circuit, the current values of the M registers are used as M-bit CRC check result.

The specific interaction process of each unit in the blind detection verification device of the embodiment of the present invention is as follows:

The obtaining unit 601 obtains the decoded N-bit downlink control information, and the specific value of N (that is, the data length of the downlink control information) is determined by the sender of the downlink control information.

The verification unit 602 performs CRC verification on N minus M-bit downlink control information to obtain an M-bit CRC verification result, where M is the number of CRC verification digits and is a positive integer smaller than N.

The above CRC check method is consistent with the CRC check of the sender. In practical applications, the sender can send the specific CRC check method to the sender in the form of a transmission message, or when the CRC check method is preset, The CRC checking methods of the sending end and the UE end are preset to be the same, and the specific implementation manner is not limited here. In the embodiment of the present invention, when performing the CRC check, the CRC check bit of the downlink control information is first removed (because the CRC check of the UE end is consistent with that of the sending end, the length of the CRC check bit can also be known), so that In the process of blind detection and verification, there is no need to perform RNTI unmasking first, and the M-bit CRC check result obtained after the original K (ie, N minus M)-bit downlink control information is CRC-checked at the sending end. The specific implementation functions of the circuit building module 6021 and the input checking module 6022 are the same as those of the circuit building module 5021 and the input checking module 5022 in the above-mentioned embodiment in FIG. 5 , and will not be repeated here.

The unmasking unit 603 performs RNTI unmasking on the last M bits of the N-bit downlink control information to obtain an M-bit RNTI unmasking result. Since the sending end appends the masked M-bit CRC check result to the K-bit downlink control message, after directly performing RNTI unmasking on the last M bits of the above N-bit downlink control information, the sending end M-bit CRC check result before masking.

After obtaining the M-bit RNTI unmasking result and the M-bit CRC check result, the blind detection judgment unit 604 compares the M-bit RNTI unmasking result and the M-bit CRC check result. If they are the same, the blind detection is successful. If they are not the same, the blind test fails.

The CRC check is performed on the decoded N minus M-bit downlink control information at the UE side. Compared with the CRC check performed on the original K-bit downlink control information at the sending end, the obtained M-bit CRC check is also consistent, so , and directly compare the M-bit RNTI demasking result with the M-bit CRC check result, and also realize the blind check check of the downlink control information.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (9)

1. a blind check method of calibration is characterized in that, comprising:

Obtain the N position Downlink Control Information after the decoding;

N is subtracted M position Downlink Control Information carry out the cyclic redundancy check (CRC) code CRC check, obtain M position CRC check result, described M is the CRC check figure place, and described M is the integer greater than 1, and described N is greater than M;

Described M position CRC check result is carried out Radio Network Temporary Identifier RNTI add and cover, obtain M position RNTI and add and cover the result;

Described M position RNTI is added the last M position of covering in result and the described N position Downlink Control Information compare, if identical, then blind check success, if not identical, then blind check failure.

2. method according to claim 1 is characterized in that, describedly N is subtracted M position Downlink Control Information carries out the cyclic redundancy check (CRC) code CRC check, obtains M position CRC check result's process, comprising:

The checking circuit that foundation is comprised of M register, the initial value of a described M register is 0;

Described N is subtracted M position Downlink Control Information inputs successively described checking circuit, after described N subtracts M position Downlink Control Information and passes through the processing of described checking circuit fully, with the currency of a described M register as M position CRC check result.

3. method according to claim 1 and 2 is characterized in that, described M is 16.

4. a blind check method of calibration is characterized in that, comprising:

Obtain the N position Downlink Control Information after the decoding;

N is subtracted M position Downlink Control Information carry out the cyclic redundancy check (CRC) code CRC check, obtain M position CRC check result, described M is the CRC check figure place, and described M is greater than 1 integer, and described N is greater than M;

The RNTI solution is carried out in last M position in the Downlink Control Information of described N position cover, obtain M position RNTI solution and cover the result;

Described M position RNTI solution is covered the result and described M position CRC check result compares, if identical, then blind check success, if not identical, then blind check failure.

5. method according to claim 4 is characterized in that, describedly N is subtracted M position Downlink Control Information carries out the cyclic redundancy check (CRC) code CRC check, obtains M position CRC check result's process, comprising:

The checking circuit that foundation is comprised of M register, the initial value of a described M register is 0;

Described N is subtracted M position Downlink Control Information inputs successively described checking circuit, after described N subtracts M position Downlink Control Information and passes through the processing of described checking circuit fully, with the currency of a described M register as M position CRC check result.

6. a blind check calibration equipment is characterized in that, comprising:

Acquiring unit is used for obtaining the N position Downlink Control Information after the decoding;

Verification unit is used for that N is subtracted M position Downlink Control Information and carries out the cyclic redundancy check (CRC) code CRC check, obtains M position CRC check result, and described M is the CRC check figure place, and described M is the integer greater than 1, and described N is greater than M;

Add and cover the unit, be used for that described M position CRC check result is carried out Radio Network Temporary Identifier RNTI and add and cover, obtain M position RNTI and add and cover the result;

The contrast unit is used for that described M position RNTI is added the last M position of covering result and described N position Downlink Control Information and compares, if identical, then blind check success, if not identical, then blind check failure.

7. device according to claim 6 is characterized in that, described verification unit comprises:

Circuit is set up module, is used for setting up the checking circuit that is comprised of M register, and the initial value of a described M register is 0;

The input validation module is used for that described N is subtracted M position Downlink Control Information and inputs successively described checking circuit, after described N subtracts M position Downlink Control Information and passes through the processing of described checking circuit fully, with the currency of a described M register as M position CRC check result.

8. a blind check calibration equipment is characterized in that, comprising:

Acquiring unit is used for obtaining the N position Downlink Control Information after the decoding;

Verification unit is used for that N is subtracted M position Downlink Control Information and carries out the cyclic redundancy check (CRC) code CRC check, obtains M position CRC check result, and described M is the CRC check figure place, and described M is the integer greater than 1, and described N is greater than M;

Solution is covered the unit, is used for that the RNTI solution is carried out in the last M position of described N position Downlink Control Information and covers, and obtains M position RNTI solution and covers the result;

The blind check judging unit is used for that described M position RNTI solution is covered the result and described M position CRC check result compares, if identical, then blind check success, if not identical, then blind check failure.

9. device according to claim 8 is characterized in that, described verification unit comprises:

Circuit is set up module, is used for setting up the checking circuit that is comprised of M register, and the initial value of a described M register is 0;

The input validation module is used for that described N is subtracted M position Downlink Control Information and inputs successively described checking circuit, after described N subtracts M position Downlink Control Information and passes through the processing of described checking circuit fully, with the currency of a described M register as M position CRC check result.

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