WO2019141196A1 - 下行控制信息传输、译码方法及装置、设备及存储介质 - Google Patents

下行控制信息传输、译码方法及装置、设备及存储介质 Download PDF

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Publication number
WO2019141196A1
WO2019141196A1 PCT/CN2019/072048 CN2019072048W WO2019141196A1 WO 2019141196 A1 WO2019141196 A1 WO 2019141196A1 CN 2019072048 W CN2019072048 W CN 2019072048W WO 2019141196 A1 WO2019141196 A1 WO 2019141196A1
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Prior art keywords
dci
header
decoding
dci format
sequence
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PCT/CN2019/072048
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English (en)
French (fr)
Inventor
倪吉庆
周伟
夏亮
陈晨
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2019141196A1 publication Critical patent/WO2019141196A1/zh

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    • 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
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection
    • 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
    • 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

Definitions

  • the present invention relates to the field of wireless communications, but is not limited to the field of wireless communications, and in particular, to a Downlink Control Information (DCI) transmission and decoding method and apparatus, a communication device, and a storage medium.
  • DCI Downlink Control Information
  • a base station sends downlink control information to a terminal for downlink resource scheduling (DL assignment), uplink resource scheduling (UL grant), and other functional configurations.
  • Other functional configurations may include, for example, configuration of power control, configuration of Sounding Reference Signal (SRS) requests, and the like.
  • the load size (payload size) of the DCI depends on the DCI format corresponding to the actual transmission mode of the base station and the specific Radio Resource Control (RRC) configuration corresponding to each functional domain included in the DCI format.
  • RRC Radio Resource Control
  • the user equipment When the user equipment (User Equipment, UE) receives the control information, it needs to detect at least three DCI formats in the search space in the control channel:
  • the DCI format of the DCI is determined by blind detection, that is, the UE performs decoding according to the load size corresponding to the DCI format. If the decoded result passes the Cyclic Redundancy Check (CRC), the decoding is considered successful and the information of each bit is read according to the functional domain of the DCI format.
  • CRC Cyclic Redundancy Check
  • the DCI format corresponding to the DL resource scheduling in the fallback mode and the DCI format corresponding to the UL resource scheduling may have the same DCI length through the zero padding operation. Therefore, in the fallback mode, the UE can perform blind detection based on only one DCI length, and determine a specific DCI format by using a header (header) in the DCI format, that is, determining the DCI format by using the value of the flag bit. Whether it is a DL resource scheduling or a DCI format corresponding to UL resource scheduling. It is noted that the header is used to indicate whether the resource scheduling information carried by the current DCI is uplink scheduling or downlink scheduling. When the receiving end blindly decodes the DCI, the DCI is blindly solved.
  • the DCI that is the current DCI is the UL resource scheduling or the DL resource scheduling can be extracted from the DCI header.
  • this method reduces the number of times the receiving end needs blind detection, and improves the detection efficiency.
  • the sender adopts zero padding, so that the lengths of the two types of DCIs corresponding to the UL resource scheduling and the DL resource scheduling are the same, and the bits that carry the effective information in the same number of bits are reduced due to the zero padding, thereby effectively
  • the coding efficiency ie, code rate
  • the embodiments of the present application are intended to provide a downlink control information transmission and decoding method and apparatus, a communication device, and a storage medium.
  • an embodiment of the present application provides a DCI transmission method, including:
  • the DCI is transmitted, wherein the DCI includes a header and does not include a zero padding.
  • an embodiment of the present application provides a decoding method, including:
  • header decoding sequence is not the same as the header predetermined sequence, decoding based on the DCI format is terminated.
  • the embodiment of the present application provides a DCI sending apparatus, which is applied to a base station, and includes:
  • a transmission module configured to transmit a DCI, where the DCI includes: a header and does not include a zero padding bit.
  • an embodiment of the present application provides a decoding apparatus, including:
  • the first decoding module is configured to decode the header information according to the DCI size corresponding to the DCI format, to obtain a header decoding sequence
  • a second decoding module configured to terminate decoding based on the DCI format if the header decoding sequence is different from a predetermined sequence of headers.
  • an embodiment of the present application provides a communications device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executed by the processor;
  • the processor is coupled to the transceiver and the memory, respectively, for implementing the one or more decoding methods, or one or more downlink control information transmission methods, by executing a computer program.
  • a downlink control information DCI sending method includes:
  • Transmitting a DCI where the DCI includes an uplink and downlink indication domain, located at a header; and the DCI does not carry a zero padding bit for achieving consistent DCI size in different formats.
  • a downlink control information DCI sending method includes:
  • the DCI is sent, where the DCI includes a resource allocation type indication field, and includes one or more resource allocation type indication bits, which are used to indicate a resource allocation type.
  • a method for determining a DCI size comprising:
  • the DCI size of the DCI format is determined according to a functional domain included in the DCI format.
  • an embodiment of the present application provides a computer storage medium, where the computer storage medium stores a computer program, after the computer program is executed, implementing one or more decoding methods, or one or more downlink controls. Information transmission method.
  • the transmitted DCI includes a header even if there is no zero padding, and the header can be used by the terminal to determine whether the current DCI format is
  • the DCI format of the DCI can be blindly solved, so that blind detection of the wrong DCI format can be stopped as early as possible, and the blind detection efficiency can be improved.
  • the transmitting end can realize the alignment of different DCI formats without zero padding in the DCI, thereby not causing the problem of low code rate due to zero padding, thereby having high blind detection efficiency and high code rate.
  • FIG. 1 is a schematic flowchart of a first downlink control information transmission according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a first decoding method according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a second decoding method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a third decoding method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a decoding apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • this embodiment provides a DCI transmission method, including:
  • the DCI is transmitted, wherein the DCI includes a header and does not include a zero padding.
  • This DCI does not carry zero padding, but also includes the header.
  • a zero-padding bit is a bit that has a bit value of "0" added in order to achieve consistent DCI lengths in different formats.
  • the transmitting DCI includes: the base station transmitting the DCI, and/or the terminal receiving the DCI.
  • the header includes one or more functional domains; the functional domain includes at least one of the following:
  • the uplink and downlink indication field includes one or more uplink and downlink indication bits, and is used to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling.
  • a resource allocation type indication field including one or more resource allocation type indication bits, for indicating a resource allocation type
  • the header check field includes one or more header check bits for verifying remaining bits of the header other than the header check bits.
  • Different functional domains may carry one or more bits with different indication functions.
  • the above three functional domains are given, and the specific implementation is not limited to any one of the above.
  • the uplink and downlink indication field includes one or more bits to perform whether the current DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling.
  • the resource allocation type indication field is used to indicate a resource allocation type, and different resource allocation types correspond to different resource allocation indications, for example, by using a correspondence between a bit bitmap and a resource, using a bit finger of each bit in the bit bitmap An indication of the corresponding resource is made.
  • the scheduling resource of the uplink resource scheduling or the downlink resource scheduling is indicated by the sending of the location information.
  • the location information may include information such as a start location plus a resource length, a start location plus a resource offset, a start location, and a termination location.
  • the header is configured to include a predetermined sequence of headers in the header for determining a DCI size of the DCI. Different DCIs may use different DCI formats, and different DCI formats have different DCI sizes.
  • the DCI size may be a bit length and the like included in one DCI.
  • the terminal first decodes the predetermined sequence of the header after receiving the header, and the correspondence between the predetermined sequence of the header and the DCI size or the DCI format is Determine the DCI size, DCI structure and other information.
  • the DCI structure may indicate information such as a functional domain included in the DCI, a positional relationship between the functional domains, and a length of each functional domain.
  • the method further comprises at least one of the following:
  • the functional domain included in the DCI format is pre-configured; for example, the functional domain included in the DCI format is statically configured. If the functional domain of the DCI is determined, the DCI size and/or DCI structure is determined.
  • the function domain included in the DCI format is sent by the high layer signaling;
  • the high layer signaling here may be the signaling of the upper layer of the physical layer, for example, the RRC signaling of the Radio Resource Control (RCC) layer;
  • RRC Radio Resource Control
  • the functional domain included in the DCI format is indicated by an indication sequence carried by the header of the DCI.
  • the header of the DCI also carries an indication sequence indicating a functional domain included in the DCI, and after decoding the header, the terminal may directly determine the DCI size according to the indication sequence of the header.
  • a decoding method includes:
  • Step 100 Decode the header information according to the DCI size corresponding to the DCI format, to obtain a header decoding sequence.
  • Step 200 If the header decoding sequence is different from the header predetermined sequence, then decoding based on the DCI format is terminated.
  • the terminal After receiving the information sent by the base station, the terminal needs to decode the information.
  • the header information corresponding to the header of the DCI format is determined according to the DCI size corresponding to the DCI format, and the header information is decoded to obtain a header decoding sequence.
  • the decoding based on the DCI format is directly stopped, thereby prematurely terminating the unnecessary decoding.
  • the blind detection efficiency of the DCI can be improved, and on the other hand, the power consumption consumed by the terminal for unnecessary blind detection can be saved.
  • the method further comprises continuing decoding based on the DCI format if the header coding sequence is identical to the header predetermined sequence.
  • the header decoding sequence matches the predetermined sequence of the header, the decoding is continued, and the efficiency of blind detection is high.
  • the method further includes:
  • the DCI size of the DCI format is determined based on the functional domain.
  • Manner 1 determining, according to a pre-configuration, a functional domain included in the DCI format
  • Manner 2 determining, by the receiving of the high layer signaling, the functional domain included in the DCI format
  • Manner 3 Determine a functional domain included in the DCI format according to the indication sequence carried by the header of the DCI.
  • the method further comprises determining a DCI size of the DCI format based on the respective functional domains.
  • this embodiment provides a decoding method, which is applied to a terminal, and includes:
  • Step S110 Determine, according to a DCI format, header information corresponding to a header of the DCI format from information to be decoded;
  • Step S120 Decoding the header information to obtain a header decoding sequence.
  • Step S130 determining whether the header decoding sequence includes a predetermined sequence of headers corresponding to the DCI format
  • Step S140 If the header decoding sequence does not include a header predetermined sequence, terminate decoding of the to-be-decoded information based on the DCI format.
  • the decoding method provided in this embodiment may be a method applied to a terminal, and the terminal serves as a receiving end of the base station transmitting the DCI.
  • the information to be decoded may be information sent by the base station, for example, information including DCI sent by the base station.
  • the terminal knows in advance a plurality of possible DCI formats, and when performing blind detection, selects a candidate DCI format, and according to the DCI format, a header corresponding to the DCI format can be extracted from the information to be decoded. For example, based on the position and/or length of the header of the DCI format, header information corresponding to the header of the DCI format is extracted from the information to be decoded.
  • the header information is preferentially decoded, for example, by performing polar coding decoding on the header information to obtain a header decoding sequence.
  • the blind detection of the information to be decoded based on the DCI format is directly terminated, and the next DCI format may be selected, and the steps S110 to S140 are performed again until the DCI format of the correct blind solution DCI is found. Or, all DCI formats cannot correctly resolve DCI blindly.
  • the blind decoding rate of the DCI can also be improved, but the transmitting end does not need to fill zero in the DCI, and the coding efficiency is not reduced due to zero padding, especially when DCI of different DCI formats is used.
  • the decoding method provided in this embodiment can greatly improve the decoding efficiency and ensure a high code rate.
  • the code rate is a ratio of the number of bits carrying valid information to the total number of bits.
  • the header decoding sequence including the predetermined sequence of the header can be divided into two cases:
  • the header decoding sequence is the predetermined sequence of the header
  • a subsequence of the header decoding sequence is a predetermined sequence of the header, and the subsequence is composed of a plurality of bits continuously distributed in the header decoding sequence.
  • the header decoding sequence includes one or more bits, which in some embodiments may optionally include a plurality of bits.
  • the method further includes: if the header decoding sequence includes the header predetermined sequence, performing further decoding of the to-be-decoded information according to a DCI size corresponding to the DCI format.
  • the header decoding sequence obtained by decoding the header information includes the predetermined sequence of the header, the current DCI format has a very large probability that the DCI format of the DCI can be correctly decoded, and then based on the DCI size corresponding to the DCI format.
  • the continued decoding of the information to be decoded for example, the DCI size of the DCI format is used to decode the DCI payload.
  • the method further includes:
  • Step S101 extracting a first subsequence from the header decoding sequence
  • Step S102 Perform verification on the second sub-sequence in the header decoding sequence by using the first sub-sequence
  • Step S103 If the second subsequence fails the verification, the decoding of the information to be decoded based on the DCI format is terminated.
  • the header decoding sequence is divided into a first subsequence and a second subsequence, wherein the first subsequence may be a header check sequence of the DCI, and the second subsequence may be The sequence of head information for the DCI.
  • the first subsequence may be a CRC sequence or other types of check sequences.
  • the first subsequence may be one or more parity bits.
  • the first subsequence may include only 1 bit.
  • the verification of the second subsequence is performed using the first subsequence. As long as the second subsequence fails the verification, the probability of introducing the information to be decoded is large and the probability of correctly decoding the DCI is small, or the probability that the current DCI format can correctly and blindly solve the DCI is small.
  • the decoding of the information to be decoded by using the DCI format may be directly terminated.
  • the step S130 may include step S131; the step S131 may include:
  • the header decoding sequence includes a predetermined sequence of headers corresponding to the DCI format.
  • the matching of the header decoding sequence and the header predetermined sequence is performed only after the second subsequence passes the check. If the check fails, the decoding using the DCI format may be terminated early.
  • determining whether the header decoding sequence includes a header predetermined sequence and a check of the first subsequence may be performed synchronously, the method further comprising: when the header decoding sequence The predetermined sequence of headers is included, and when the second subsequence passes the verification, the decoding of the information to be decoded is continued, otherwise the decoding is stopped.
  • the header comprises at least one of:
  • An uplink and downlink indication bit configured to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling;
  • the resource allocation type indication bit is used to indicate the resource allocation mode.
  • a header check bit configured to check remaining bits of the header except the header check bit
  • the header may be a plurality of bits, and different bits or combinations of bits may be used to indicate different information.
  • the predetermined sequence of headers is composed of different bits having a specific information indicating function. These bits are used alone to indicate specific information. After combining, the predetermined sequence of headers can be formed, thereby realizing multiplexing of bits, achieving multiple functions of one bit, and again increasing the code rate.
  • the header decoding sequence can be used to identify a dedicated sequence in DCI format.
  • the uplink and downlink indication bits may be one or more. If the uplink and downlink indication bits are one, if the bit "0" can indicate that the current DCI is the DCI of the uplink resource scheduling, if the bit is "1", the current DCI can be indicated as the DCI of the downlink resource scheduling. Alternatively, if the bit "1" can indicate that the current DCI is the uplink resource scheduled DCI, if the bit is "0", the current DCI can be indicated as the downlink resource scheduled DCI.
  • the resource allocation type indication bit may also be one or more bits.
  • the at least two types of resources include at least two types:
  • the first type indicates the resources of the uplink scheduling or downlink scheduling by using a bitmap.
  • the second type indicates the resources of the uplink scheduling or downlink scheduling by using a starting location plus a resource length, or a location information indication manner such as a starting location and a termination location. In this way, after the terminal decodes the resource allocation type indication bit, the terminal can determine the currently scheduled resource according to the manner indicated.
  • the check bit may correspond to the foregoing first sub-sequence, and may be used for other bits in the header, for example, uplink and downlink indication bits and/or resource type indication bits, etc. for performing decoding verification.
  • the header also retains reserved bits to facilitate subsequent expansion of the DCI format and indication of other information.
  • the method further includes:
  • the DCI size of the DCI format is determined according to the predetermined signaling.
  • the predetermined signaling may be high layer signaling, and the high layer signaling may be signaling above the physical layer, for example, RRC layer signaling.
  • the base station can inform the terminal of the DCI size of different DCI formats by sending the high layer signaling.
  • the base station sends the indication information carrying the DCI size corresponding to the DCI format in a static configuration and/or a semi-static manner.
  • the terminal knows in advance the DCI size of various DCI formats that may correctly blindly resolve DCI before receiving the blind solution of the DCI.
  • the base station may also send indication information indicating a functional domain included in the DCI format in various manners, thereby facilitating the terminal to determine the DCI size according to the functional domain included in the DCI format.
  • the predetermined signaling may also be used to indicate a predetermined sequence of headers corresponding to the DCI format.
  • the functional domains have different or included functional domains, and the DCI format has different DCI sizes.
  • the DCI size of the DCI format may be semi-statically transmitted, and the predetermined sequence of headers of different DCI formats may be determined by static configuration, thereby reducing the signaling overhead generated by the predetermined sequence of the sending header.
  • the base station may also periodically transmit the DCI size of the DCI format and/or a corresponding header predetermined sequence by using high layer signaling or the like.
  • the step S130 may include:
  • the third subsequence of the header decoding sequence is a header predetermined sequence corresponding to the DCI format, wherein a sequence length of the third subsequence is smaller than a sequence length of the header decoding sequence.
  • the header decoding sequence may be divided into multiple sub-sequences.
  • the header decoding sequence may include a third sub-sequence, and remaining sequences other than the third sub-sequence.
  • the third subsequence may be a subsequence located at a predetermined position in the header decoding sequence, for example, the third subsequence may be the first X bits of the header decoding sequence.
  • only the third subsequence is matched with the corresponding header predetermined sequence, so that it can be determined whether the header decoding sequence includes the header predetermined sequence.
  • the "third" in the "third subsequence" herein has no specific meaning, and is only for distinguishing the aforementioned header information sequence (first subsequence) and header check sequence (second subsequence).
  • the header decoding sequence includes a fourth subsequence in addition to the third subsequence.
  • the third subsequence and the fourth subsequence may each be one of the foregoing sequence of header information.
  • the fourth subsequence may be a sequence consisting of a starting plurality of bits of the header coding sequence; the fourth subsequence may be a sequence of bits subsequent to the third subsequence.
  • the method further includes:
  • the header further includes a fourth subsequence, where the fourth subsequence can be used to indicate a functional domain included in the DCI, and the DCI included in the same DCI format is different in functional domain, and the DCI is different in size.
  • the DCI format at the beginning may include information on the head position and/or head size of the DCI, and then the overall size or load size of the DCI may be dynamically determined according to the fourth subsequence. Therefore, in this embodiment, the fourth subsequence can dynamically indicate the DCI size of the current DCI.
  • the terminal Before blindly deciphering DCI, the terminal knows in advance the structure information of the header of the DCI format, the functional domain that can be included, and the length of each functional domain. In this case, after the functional domain is indicated by the fourth subsequence, the terminal The DCI size of the current DCI of the DCI format can be calculated.
  • the method further includes:
  • the third subsequence is verified by using a fifth subsequence of the header decoding sequence; wherein a sum of sequence lengths of the third subsequence, the fourth subsequence, and the fifth subsequence is equal to The sequence length of the header decoding sequence;
  • the header decoding sequence is further provided with a fifth subsequence, and the fifth subsequence may be a sequence formed by the foregoing header check bits.
  • the terminal When blindly deciding DCI, the terminal knows in advance the header structure of the DCI format, for example, the sequence length of the header, which constitutes a third subsequence, which constitutes a fourth subsequence, and which constitute a fifth subsequence.
  • the third subsequence and the fourth subsequence and the fifth subsequence are sequentially distributed in the header decoding sequence. That is, the fourth subsequence is located between the third subsequence and the fifth subsequence.
  • the method further comprises: if the third subsequence passes verification, determining a functional domain included in the DCI format according to the fourth subsequence in the header coding sequence; including according to the current DCI The functional domain determines the DCI size of the DCI format.
  • the blind solution can be further accelerated by the verification of the third subsequence.
  • the fifth subsequence checks the third subsequence and the fourth subsequence to speed up the blind solution.
  • the embodiment further provides a downlink control information transmission method, including:
  • the downlink control information DCI is transmitted, where the DCI includes a header, and the header includes a predetermined sequence of headers corresponding to the DCI format for determining the DCI.
  • the DCI also includes a load.
  • the method can be applied to a base station, and if the transmission DCI is a reception DCI, the method can be applied to the terminal.
  • the DCI includes a header and a payload
  • the header carries a predetermined sequence of headers, so that the subsequent convenient terminal directly decodes the DCI format of the current DCI by using the decoding of the header to speed up decoding of the DCI.
  • the rate at the same time, does not need to add zero in DCI to reduce the difficulty of blind solution to improve the efficiency of blind solution.
  • the header comprises at least one of:
  • An uplink and downlink indication bit configured to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling;
  • a resource allocation type indication bit used to indicate a resource allocation manner
  • the predetermined sequence of headers included in the header may be formed by one or more of the up and down indication bits, resource allocation type indication bits, check bits, and reserved bits, and each indicator bit is used separately.
  • the indication information is combined to form the predetermined sequence of the head.
  • the method further includes:
  • the predetermined signaling may be the foregoing high layer signaling.
  • the base station may send the predetermined signaling in a static configuration or a semi-static manner, thereby facilitating the terminal to determine the DCI size and/or the header predetermined sequence of each DCI format.
  • the DCI size corresponding to the DCI format is dynamic, and the partial sequence in the header in the DCI is directly used for dynamic indication. Therefore, the method further includes: adding, in the header, the predetermined sequence of the header corresponding to the DCI format; adding, according to a functional domain included in the DCI, a size indicating the DCI in the header Indicate the sequence.
  • the indication sequence may correspond to the fourth subsequence mentioned in the decoding method.
  • the embodiment provides a decoding apparatus, which is applied to a terminal, and includes:
  • the first decoding module 110 is configured to decode the header information according to the DCI size corresponding to the DCI format, to obtain a header decoding sequence.
  • the second decoding module 120 is configured to terminate decoding based on the DCI format if the header decoding sequence is different from a predetermined sequence of headers.
  • the first decoding module 110 and the second decoding module 120 may each be a program module, and the program module may be executed by the processor to implement the functions of the foregoing modules.
  • the second decoding module 120 is further configured to: if the header decoding sequence includes the header predetermined sequence, perform the to-be-decoded information according to a DCI size corresponding to the DCI format. Continue to decode.
  • the apparatus further includes:
  • a verification module configured to verify a second subsequence of the header decoding sequence by using a first subsequence of the header decoding sequence
  • the second decoding module 120 is configured to terminate decoding of the information to be decoded based on the DCI format if the second subsequence fails the verification.
  • the second decoding module 120 is configured to determine whether the header decoding sequence includes the predetermined sequence of headers if the second subsequence passes the check.
  • the second decoding module 120 is configured to: if the second subsequence passes the check and the header decoding sequence includes the predetermined sequence of headers, according to the DCI format The continued decoding of the information to be decoded is performed on the corresponding DCI size.
  • the header includes at least one of the following: an uplink and downlink indication bit, configured to indicate that the DCI is a DCI of an uplink resource scheduling or a DCI of a downlink resource scheduling, and a resource allocation type indication bit, used to indicate a resource. Allocation mode; a header check bit for verifying remaining bits of the header except the header check bits; reserved bits.
  • the device also includes:
  • a signaling receiving module configured to receive predetermined signaling; for example, the foregoing high layer signaling, etc.;
  • a size determining module configured to determine a DCI size of the DCI format according to the predetermined signaling.
  • the second decoding module 120 is further configured to determine whether a third subsequence of the header coding sequence is a header predetermined sequence corresponding to the DCI format, where the third subsequence The sequence length is less than the sequence length of the header decoding sequence;
  • the device also includes:
  • a size determining module configured to determine, according to a fourth sub-sequence of the header decoding sequence (corresponding to the foregoing indication sequence), a functional domain included in the DCI corresponding to the DCI format, where the fourth sub-sequence The sum of sequence lengths of the third subsequence is less than or equal to the sequence length of the header decoding sequence; and determining the DCI size of the DCI format according to the functional domain included in the current DCI.
  • the apparatus further includes:
  • a verification module configured to perform verification on the third subsequence by using a fifth subsequence of the header decoding sequence; wherein sequences of the third subsequence, the fourth subsequence, and the fifth subsequence The sum of the lengths is equal to the sequence length of the header decoding sequence;
  • the second decoding module 120 is configured to terminate decoding of the to-be-decoded information based on the DCI format if the third sub-sequence fails verification.
  • the size determining module is configured to determine, according to the fourth subsequence in the header decoding sequence, a functional domain included in the DCI format if the third subsequence passes verification; according to the current The functional domain included in the DCI determines the DCI size of the DCI format.
  • the embodiment provides a downlink control information sending apparatus, including:
  • a transmission module configured to transmit a DCI, where the DCI includes: a header and does not include a zero padding bit.
  • the DCI includes: a header and a load; and the header carries a predetermined sequence of headers corresponding to a DCI format for determining the DCI.
  • the transmission module in this embodiment may also correspond to a program module, and the DCI may be sent by the execution control antenna of the processor.
  • the header includes one or more functional domains; the functional domain includes at least one of the following:
  • the uplink and downlink indication field includes one or more uplink and downlink indication bits, and is used to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling.
  • a resource allocation type indication field including one or more resource allocation type indication bits, for indicating a resource allocation type
  • the header check field includes one or more header check bits for verifying remaining bits of the header other than the header check bits.
  • the header is for carrying a predetermined sequence of headers within the header for determining a DCI size of the DCI.
  • the method further comprises at least one of the following:
  • the functional domain included in the DCI format is indicated by an indication sequence carried by the header of the DCI.
  • the embodiment provides a communication device, including: a transceiver 310, a memory 320, a processor 330, and a computer program stored on the memory 320 and executed by the processor 330;
  • the processor 330 is connected to the transceiver 310 and the memory 320, respectively, for implementing the decoding method in the foregoing one or more technical solutions, or the downlink control signaling in the foregoing one or more technical solutions, by executing the computer program.
  • a transmission method such as one or more of the methods shown in Figures 1-4.
  • the transceiver 310 can be a mobile antenna.
  • the memory 320 may be a storage device including a storage medium in the communication device, and may be a random access memory, a read only memory, a storage hard disk, or the like.
  • the processor 330 can be various types of processors, a central processing unit, a microprocessor, an application processor, a programmable array, or an application specific integrated circuit.
  • the communication device may be the aforementioned terminal or the aforementioned terminal or base station.
  • the transceiver is configured to transmit a DCI under control of the processor, wherein the DCI includes a header and does not include a zero padding bit.
  • the header includes one or more functional domains; the functional domain includes at least one of the following:
  • the uplink and downlink indication field includes one or more uplink and downlink indication bits, and is used to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling.
  • a resource allocation type indication field including one or more resource allocation type indication bits, for indicating a resource allocation type
  • the header check field includes one or more header check bits for verifying remaining bits of the header other than the header check bits.
  • the header is for carrying a predetermined sequence of headers within the header for determining a DCI size of the DCI.
  • the method further comprises at least one of the following:
  • the functional domain included in the DCI format is indicated by an indication sequence carried by the header of the DCI.
  • the processor is specifically configured to decode the header information according to the DCI size corresponding to the DCI format to obtain a header decoding sequence; if the header decoding sequence and the header predetermined sequence If not, decoding based on the DCI format is terminated.
  • the processor is further configured to continue decoding based on the DCI format if the header decoding sequence is the same as the header predetermined sequence.
  • the processor further for the method, further comprising at least one of the following:
  • the processor further used in the method, further includes:
  • the DCI size of the DCI format is determined according to a functional domain included in the DCI format.
  • the embodiment provides a computer storage medium, where the computer storage medium stores a computer program; after the computer program is executed, the decoding method in the one or more technical solutions, or one or more of the foregoing technical solutions, can be implemented.
  • Medium and downlink control signaling transmission methods such as one or more of the methods shown in FIGS. 1 through 4.
  • the embodiment further provides a downlink control information DCI sending method, including:
  • Transmitting a DCI where the DCI includes an uplink and downlink indication domain, located at a header; and the DCI does not carry a zero padding bit for achieving consistent DCI size in different formats.
  • the DCI further includes:
  • the resource allocation type indication field includes one or more resource allocation type indication bits for indicating a resource allocation type.
  • the method further includes:
  • the functional domain included in the DCI format is indicated by an indication sequence carried by the header of the DCI.
  • This domain can be carried in the header.
  • This embodiment further provides a DCI sending method, including:
  • the DCI is sent, where the DCI includes a resource allocation type indication field, and includes one or more resource allocation type indication bits, which are used to indicate a resource allocation type.
  • the method further includes:
  • the functional domain included in the DCI format is indicated by an indication sequence carried by the header of the DCI.
  • the embodiment further provides a method for determining a DCI size, including: determining, according to a pre-configuration, a functional domain included in the DCI format; and/or determining a functional domain included in the DCI format by using a configuration of high-layer signaling;
  • the DCI size of the DCI format is determined according to a functional domain included in the DCI format.
  • the functional domain includes at least one of the following:
  • the uplink and downlink indication field includes one or more uplink and downlink indication bits, and is used to indicate that the DCI is a DCI for uplink resource scheduling or a DCI for downlink resource scheduling.
  • a resource allocation type indication field including one or more resource allocation type indication bits, for indicating a resource allocation type
  • the header check field includes one or more header check bits for verifying remaining bits of the header other than the header check bits.
  • header in the DCI format including: DL/UL indication, resource allocation type indication, etc.
  • different values of the headers correspond to different DCI sizes.
  • the NR supports two resource allocation types, where type 0 uses a bit bitmap to perform resource mapping; type 1 uses a continuous allocation manner to notify the starting position and length of resource allocation.
  • the NR supports two resource allocation modes by semi-static or dynamic indication through high-level signaling, thereby realizing the indication of the DCI size of different DCI formats.
  • the user When the values of the headers are different, the user first determines a specific DCI size according to the value of the header, and then performs blind detection based on the corresponding DCI size.
  • This application specifically includes the following two methods:
  • the header is first decoded.
  • the decoding is directly terminated early; if the value of the header decoding corresponds to the predetermined sequence of the header, the decoding operation is continued;
  • Manner 2 The header includes a parity bit, which is placed at the last position of the header, and then according to the specific decoding of the sequence, the header is first decoded, and the other bits of the header are passed through additional check bits. Check it out. If the value of the header (removed check bit) decoding corresponds to the predetermined sequence of the header of the DCI format and the check passes, the decoding operation of the subsequent functional domain is continued; otherwise, the decoding is terminated early.
  • the sender does the following:
  • the header and other information bits are included in the DCI format of the transmitting end.
  • the header includes: M plus X bits, where M bits of information bits, and X bits of parity bits, the parity bits of the X bits are generated based on specific rules for verifying other information of the header.
  • the DCI also includes N bits of information bits, and N is related to the value of the M bits of information bits in the header. Wherein, and M and N are positive integers. These N-bit information bits can be information bits in the load of the DCI.
  • the M plus X bit information bits corresponding to the header are located at the foremost position in the DCI; the other N bits of information bits are located at a position behind the head in the DCI.
  • the M plus N plus X bits are polarized together in accordance with the NR standard.
  • the receiving end performs the following operations:
  • the UE first selects a DCI format, and then determines a possible header value according to the candidate DCI format, and a corresponding DCI load size;
  • the UE performs detection based on the candidate DCI size. If the value of the header (excluding the check bit) decoding corresponds to the size of the DCI, and the check passes, the decoding operation of the subsequent functional domain continues; otherwise, the advance Terminate the decoding.
  • the UE sequentially detects the DCI size of the DCI format. If a DCI passes the header check and the subsequent CRC check, it indicates correct decoding; if no header of the DCI format passes the check, for example, the CRC is performed on the header. Verification means that there is no DCI transmission corresponding to the user.
  • the system semi-statically configures the resource allocation mode.
  • the other uplink and downlink functional domains are also configured through semi-static configuration. Since the corresponding functional domains are different, the bit lengths of other functional domains of the uplink and downlink may be different.
  • the head of the DCI format design includes:
  • 1-bit resource allocation type indication a value of "0" indicates a resource allocation type 0, and a value of "1" indicates a resource allocation type 1;
  • the system semi-static configuration uplink uses resource allocation mode type 1, and the downlink uses resource allocation mode type 0, then the value of the header is UL: [0 1], DL: [1 0], for example, Figure 7 shows.
  • the UE needs to first detect two DCI formats, a DL DCI format and a UL DCI format, and their DCI sizes are K0 and K1, respectively.
  • the DCI size equal to K1 (longer bit)
  • the sequence is decoded, the position of the head is determined, and the first two bits of information are decoded and judged. If the decoding bit is [1 0], the remaining decoding process is continued; otherwise, the current decoding process is terminated, and the decoding is performed in accordance with the DCI size equal to K0, and a similar decoding process is performed.
  • the decoding process can be performed preferentially based on the DCI format with a large DCI size.
  • the system semi-statically configures the resource allocation mode.
  • the other uplink and downlink functional domains are also configured through semi-static configuration. Since the corresponding functional domains are different, the bit lengths of other functional domains of the uplink and downlink may be different.
  • the head of the DCI format design includes:
  • 1-bit resource allocation type indication a value of "0" indicates a resource allocation type 0, and a value of "1" indicates a resource allocation type 1;
  • the UE needs to first detect two DCI formats, a DL DCI format and a UL DCI format, and their DCI sizes are K0 and K1, respectively. First, according to the DCI size equal to K1 (longer bit), the decoding is performed sequentially, the position of the head is determined, and the first three bits of information are decoded and judged.
  • the remaining decoding process is continued; otherwise, the current decoding process is terminated, and the decoding is performed according to the DCI size equal to K0. And perform a similar decoding process.
  • the system dynamically configures the resource allocation mode.
  • the other uplink and downlink functional domains are semi-statically configured. Since the corresponding functional domains are different, the bit lengths of other functional domains of the uplink and downlink may be different.
  • DCI sizes there are four DCI sizes, namely:
  • Upstream resource scheduling plus resource allocation type 0, length is K0;
  • the downlink resource scheduling plus resource allocation type 1 has a length of K3.
  • the header of the DCI format design includes: a value of "1" bit for uplink and downlink indication, a value of "0" for uplink, and 1 for downlink;
  • 1-bit resource allocation type indication a value of "0" indicates a resource allocation type 0, and a value of "1" indicates a resource allocation type 1;
  • the system allocates resource allocation types dynamically in both uplink and downlink.
  • the UE needs to first detect two DCI formats, a DL DCI format and a UL DCI format, since each DCI format may correspond to two resource allocation types. Therefore, the DCI size is 4, namely K0, K1, K2 and K3, assuming a length of K2>K0>K3>K1.
  • the order is decoded, the position of the head is determined, and the first 4 bits of information are decoded and judged.
  • the remaining decoding process is continued; otherwise, the current decoding process is terminated, and the DCI size is equal to K0, K3, K1.
  • the sequence is sequentially decoded and a similar decoding process is performed.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage device includes the following steps: the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • ROM read-only memory
  • RAM random access memory
  • magnetic disk or an optical disk.
  • optical disk A medium that can store program code.

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Abstract

本申请实施例公开了一种下行控制信息发送、译码方法及装置、通信设备及存储介质。所述DCI传输方法，包括：传输DCI，其中，所述DCI包括：头部且不包括补零比特。所述译码方法包括：依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。

Description

下行控制信息传输、译码方法及装置、设备及存储介质
相关申请的交叉引用
本申请基于申请号为201810045182.2、申请日为2018年01月17日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及无线通信领域但不限于无线通信领域，尤其涉及一种下行控制信息(Downlink Control Information，DCI)传输、译码方法及装置、通信设备及存储介质。
背景技术
在长期演进(Long Term Evolution，LTE)系统中，基站向终端发送下行控制信息用于下行资源调度(DL assignment)、上行资源调度(UL grant)以及指示其他功能配置。其他功能配置可例如，功率控制的配置、探测参考信号(Sounding Reference Signal，SRS)请求的配置等。DCI的负荷尺寸(payload尺寸)取决于基站实际传输模式对应的DCI格式(format)以及该DCI格式中包含的各功能域对应的具体无线资源控制(Radio Resource Control，RRC)配置。
用户设备(User Equipment，UE)接收控制信息时，需要控制信道内的搜索空间内检测至少三种DCI格式：
RRC配置的传输模式下用于下行资源调度的DCI格式，
回退模式(fallback)下用于下行资源调度的DCI格式，
回退模式下用于上行资源调度的DCI格式。
DCI的DCI格式均是通过盲检测(blind detection)确定，即UE按照该DCI格式对应的负荷尺寸进行译码。如果译码后的结果通过循环冗余校验码校验(Cyclic Redundancy Check，CRC)，则认为译码成功并按照该DCI格式的功能域读取各比特的信息。
在LTE系统中，回退模式下DL资源调度对应的DCI格式和UL资源调度对应的DCI格式，通过补零操作可以有相同的DCI长度。因此，在回退模式下，UE可以只基于一种DCI长度进行盲检测，在通过DCI格式中的头部(头部)来确定具体的DCI格式，即通过标志位的取值确定该DCI格式是DL资源调度还是UL资源调度对应的DCI格式。注意的是，该头部是用于指示当前DCI携带的资源调度信息是上行调度还是下行调度。接收端在盲解该DCI时，是会对DCI整体进行盲解，盲解之后才可以从DCI的头部中提取出指当前DCI是UL资源调度还是DL资源调度的DCI。这种方式在一定程度上，减少了接收端需要盲检的次数，提升了检测效率。但是发送端采用补零，使得UL资源调度和DL资源调度对应的两种DCI的长度一致的方式，由于补零会导致在同样长的比特个数中承载有效信息的比特会减少，从而导致有效编码效率(即码率)降低。
发明内容
有鉴于此，本申请实施例期望提供一种下行控制信息传输、译码方法及装置、通信设备及存储介质。
本申请的技术方案是这样实现的：
第一方面，本申请实施例提供一种DCI传输方法，包括：
传输DCI，其中，所述DCI包括：头部且不包括补零比特。
第二方面，本申请实施例提供一种译码方法，包括：
依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码 序列；
若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
第三方面，本申请实施例提供一种DCI发送装置，应用于基站中，包括：
传输模块，配置为传输DCI，其中，所述DCI包括：头部且不包括补零比特。
第四方面，本申请实施例提供一种译码装置，包括：
第一译码模块，配置为依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；
第二译码模块，配置为若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
第五方面，本申请实施例提供一种通信设备，包括：收发器、存储器、处理器及存储在存储器上并由所述处理器执行的计算机程序；
所述处理器分别与收发器及存储器连接，用于通过执行计算机程序实现前述一个或多个译码方法、或一个或多个下行控制信息传输方法。
一种下行控制信息DCI发送方法，包括：
发送DCI，其中，所述DCI包括上下行指示域，位于头部；且所述DCI未携带用于实现不同格式DCI尺寸一致的补零比特。
一种下行控制信息DCI发送方法，包括：
发送DCI，其中，所述DCI包括资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型。
一种DCI尺寸确定方法，包括：
根据预先配置，确定所述DCI格式所包含的功能域；和/或，通过高层信令的配置确定所述DCI格式所包含的功能域；
根据所述DCI格式所包含的功能域，确定所述DCI格式的DCI尺寸。
第六方面，本申请实施例提供一种计算机存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序被执行后，实现前述一个或多个译码方法、或一个或多个下行控制信息传输方法。
本申请实施例提供的下行控制信息传输、译码方法及装置、通信设备及存储介质，发送的DCI即便没有补零比特也包括头部，该头部可以用于终端确定出当前DCI格式是否是可以盲解出该DCI的DCI格式，从而可以尽早停止错误的DCI格式的盲检测，可以提升盲检测效率。且利用这种方式，发送端可以不用在DCI中补零来实现不同DCI格式的对齐，从而也不会产生因补零导致的码率低的问题，从而具有盲检测效率高及码率高的特点。
附图说明
图1为本申请实施例提供的第一种下行控制信息传输的流程示意图；
图2为本申请实施例提供的第一种译码方法的流程示意图；
图3为本申请实施例提供的第二种译码方法的流程示意图；
图4为本申请实施例提供的第三种译码方法的流程示意图；
图5为本申请实施例提供的一种译码装置的结构示意图；
图6为本申请实施例提供的一种通信设备的结构示意图；
图7至图9分别为本申请实施例提供的DCI的示意图。
具体实施方式
以下结合说明书附图及具体实施例对本申请的技术方案做进一步的详细阐述。
如图1所示，本实施例提供一种DCI传输方法，包括：
传输DCI，其中，所述DCI包括：头部且不包括补零比特。
这种DCI中未携带有补零比特，但是也包括头部。这种的补零比特是为了实现不同格式的DCI长度一致添加的比特值为“0”的比特。
所述传输DCI包括：基站发送所述DCI，和/或，终端接收所述DCI。
在一些实施例中，所述头部包括一个或多个功能域；所述功能域包括以下至少之一：
上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型；
头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
不同的功能域可携带有具有不同指示功能的一个或多个比特，例如，上述给出了三种功能域，具体实现时不局限于上述任意一种。
上下行指示域包括一个或多个比特，来执行当前DCI是进行上行资源调度的DCI，还是进行下行资源调度的DCI。
所述资源分配类型指示域，用于指示资源分配类型，不同的资源分配类型对应了不同的资源分配指示，例如，通过比特位图与资源的对应关系，利用比特位图中各比特的比特指进行对应资源的指示。再例如，通过位置信息的发送来指示上行资源调度或下行资源调度的调度资源。所述位置信息可包括：起始位置加资源长度、起始位置加资源偏移量、起始位置和终止位置等信息。
在一些实施例中，所述头部，用于所述头部中包含用于确定所述DCI的DCI尺寸的头部预定序列。不同的DCI可能使用的是不同的DCI格式， 不同的DCI格式具有不同的DCI尺寸。在本实施例中，所述DCI尺寸可为一条DCI所包括的比特长度等。在本实施例中，若头部中携带有头部预定序列，则终端接收到之后先译码出该头部预定序列，通过该头部预定序列与DCI尺寸或DCI格式的对应关系，就可以确定出DCI尺寸、DCI结构等信息。DCI结构可以指示出该DCI包括的功能域，功能域之间的位置关系，各个功能域的长度等信息。
在一些实施例中，所述方法还包括以下至少之一：
预先配置DCI格式所包含的功能域；例如，静态配置好DCI格式包括的功能域，若DCI的功能域一旦确定了，则DCI尺寸和/或DCI结构就确定了。
通过高层信令下发DCI格式所包含的功能域；这里的高层信令可为物理层以上层的信令，例如，无线资源控制(Radio Resource Control，RCC)层的RRC信令等；
通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。在比实施例中，该DCI的头部还会携带有指示DCI所包含功能域的指示序列，终端在译码出头部之后，可以直接根据头部的指示序列确定DCI尺寸。
如图2所示，一种译码方法，包括：
步骤100：依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；
步骤200：若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
终端接收到基站发送的信息之后，需要对信息进行译码。在本实施例中会依据DCI格式对应的DCI尺寸，确定出与DCI格式的头部对应的头部信息，并对头部信息进行译码，得到头部译码序列。
若不相匹配直接停止基于该DCI格式的译码，从而提前终止没有必要 的译码。一方面可以提升DCI的盲检测效率，另一方面可以节省终端进行不必要盲检测所消耗的功耗。
在一些实施例中，所述方法还包括：若所述头部译码序列与所述头部预定序列相同，则基于所述DCI格式继续译码。
即若该头部译码序列与头部预定序列相匹配，则继续译码，具有盲检测的效率高的特点。
在一些实施例中，所述方法还包括：
确定所述DCI格式包括的功能域；
基于所述功能域确定所述DCI格式的DCI尺寸。
确定所述DCI格式包括的功能域的方式有多种，以下提供几种可选的方式：
方式一：根据预先配置，确定所述DCI格式所包含的功能域；
方式二：通过高层信令的接收确定所述DCI格式所包含的功能域；
方式三：根据所述DCI的头部携带的指示序列，确定DCI格式所包含的功能域。
故在一些实施例中，所述方法还包括：根据所述各个功能域确定所述DCI格式的DCI尺寸。
如图3所示，本实施例提供一种译码方法，应用于终端，包括：
步骤S110：根据DCI格式从待译码信息中确定出与所述DCI格式的头部对应的头部信息；
步骤S120：对所述头部信息进行译码，得到头部译码序列；
步骤S130：确定头部译码序列是否包括所述DCI格式对应的头部预定序列；
步骤S140：若所述头部译码序列不包括头部预定序列，则终止基于所述DCI格式对所述待译码信息的译码。
本实施例提供的译码方法可为应用于终端中的方法，终端作为基站传输DCI的接收端。
在本实施例中所述待译码信息可为基站发送的信息，例如，包括基站发送的DCI的信息。
所述终端预先知道多种可能的DCI格式，在进行盲检时，选择出候选的DCI格式，根据该DCI格式可以从待译码信息中提取出与该DCI格式对应的头部。例如，根据该DCI格式的头部的位置和/或长度，从待译码信息中提取出与该DCI格式的头部对应的头部信息。
优先对头部信息进行译码，例如，对头部信息进行极化(Polar Coding)译码，得到头部译码序列。
将所述头部译码序列的至少部分与所述DCI格式对应的头部预定序列进行比对，若两者不一致，表明该DCI格式不能够正确的盲检测出DCI，故为了加速盲解，在本实施例中直接终止基于所述DCI格式对待译码信息的盲检测，可以选择出下一种DCI格式，再次执行所述步骤S110至步骤S140，直到找到正确的盲解出DCI的DCI格式，或者，所有DCI格式都无法正确盲解出DCI。
显然采用本实施例中所述的方法，同样可以提升DCI的盲解速率，但是发送端不用在DCI中补零，不会因为补零导致编码效率的降低，尤其是当不同种DCI格式的DCI尺寸本身相差较大时，本实施例提供的译码方法可以大大的提升译码效率的同时，还可以确保具有较高的码率。此处的码率，在信道编码中，所述码率为携带有有效信息的比特个数与总比特个数的比值。
在本实施例中所述头部译码序列包括所述头部预定序列可分为两种情况：
第一种：所述头部译码序列就是所述头部预定序列；
第二种：所述头部译码序列的一个子序列是所述头部预定序列，该子序列是所述头部译码序列中连续分布的多个比特组成。
所述头部译码序列包括一个或多个比特，在一些实施例中所述头部译码序列可选为包括多个比特。
在一些实施例中，所述方法还包括：若所述头部译码序列包括所述头部预定序列，根据所述DCI格式对应的DCI尺寸进行所述待译码信息的继续译码。
若头部信息译码得到的头部译码序列包括所述头部预定序列，则当前的DCI格式有非常大的概率是可以正确解码DCI的DCI格式，则基于该DCI格式对应的DCI尺寸进行待译码信息的继续译码，例如，对该DCI格式的DCI尺寸对DCI的负荷进行译码。
在一些实施例中，如图4所示，所述方法还包括：
步骤S101：从所述头部译码序列中提取出第一子序列；
步骤S102：利用所述第一子序列对所述头部译码序列中的第二子序列进行校验；
步骤S103：若所述第二子序列未通过所述校验，则终止基于所述DCI格式对所述待译码信息的译码。
在本实施例中，为了确保译码的正确性，避免所述待译码信息在传输过程中因为噪音引入导致头部信息的信息失真。在本实施例中，所述头部译码序列分为了第一子序列和第二子序列，其中，所述第一子序列可为DCI的头部校验序列，所述第二子序列可为DCI的头部信息序列。例如，所述第一子序列可为CRC序列，或者，是其他类型的校验序列。所述第一子序列可为一个或多个校验比特。在本实施例中为了提升码率，可以将所述第一子序列可仅包括1个比特。
利用所述第一子序列进行第二子序列的校验。只要在第二子序列未通 过校验，则表示待译码信息的引入的噪音很大且正确解码出DCI的概率很小，或当前DCI格式可以正确盲解出DCI的概率很小，在本实施例中可以直接终止利用该DCI格式进行所述待译码信息的译码。
在一些实施例中，所述步骤S130可包括步骤S131；所述步骤S131可包括：
若所述第二子序列通过所述校验，则确定头部译码序列是否包括所述DCI格式对应的头部预定序列。
仅有在第二子序列通过校验之后，才执行头部译码序列和头部预定序列的匹配，若校验未通过，可以提前终止利用该DCI格式的译码。
在还有一些实施例中，确定所述头部译码序列是否包括头部预定序列及所述第一子序列的校验可以同步进行，所述方法还包括：当所述头部译码序列包括所述头部预定序列，且第二子序列通过所述校验时，继续对所述待译码信息的译码，否则停止译码。
在一些实施例中，所述头部包括以下至少之一：
上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示比特，用于指示资源分配方式。
头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特；
预留比特。
在本实施例中，所述头部可多个比特，不同的比特或比特组合可以用于指示不同的信息。所述头部预定序列是由不同的具有特定信息指示功能的比特组成。这些比特单独用于指示特定信息，组合之后可以形成所述头部预定序列，从而实现了比特的复用，实现了一个比特的多重功效，再次提升了码率。当然在一些实施例中，所述头部译码序列可以用于识别DCI 格式的专用序列。
例如，所述上下行指示比特，可为一个或多个。若所述上下行指示比特为1个，若该比特“0”可以指示当前DCI为上行资源调度的DCI，若该比特为“1”，则可以指示当前DCI为下行资源调度的DCI。或者，若该比特“1”可以指示当前DCI为上行资源调度的DCI，若该比特为“0”，则可以指示当前DCI为下行资源调度的DCI。
所述资源分配类型指示比特，同样可为一个或多个比特。所述资源至少类型至少包括两种：
第一种：采用比特位图(bitmap)的方式指示上行调度或下行调度的资源。
第二种：采用起始位置加上资源长度，或者，起始位置和终止位置等位置信息指示方式，指示所述上行调度或下行调度的资源。如此，终端解码出资源分配类型指示比特之后，可以按照其指示的方式确定出当前调度的资源。
所述校验比特可对应于前述的第一子序列，可以用于头部中其他的比特，例如，上下行指示比特和/或资源类型指示比特等进行译码校验。
在一些实施例中所述头部还保留有预留比特，方便后续的DCI格式的扩容及其他信息的指示。
在一些实施例中，所述方法还包括：
接收预定信令；
根据所述预定信令确定所述DCI格式的DCI尺寸。
在本实施例中，所述预定信令可为高层信令，该高层信令可为物理层以上的信令，例如，RRC层信令等。基站可以通过高层信令的下发告知终端不同的DCI格式的DCI尺寸。例如，所述基站通过静态配置和/或半静态的方式下发携带有DCI格式对应的DCI尺寸的指示信息。如此，终端在接 收到盲解所述DCI之前，就预先知道了各种可能正确盲解DCI的DCI格式的DCI尺寸。又例如，所述基站还可以通过各种方式下发指示DCI格式所包含功能域的指示信息，从而方便终端根据DCI格式所包含的功能域确定出DCI尺寸。
在一些实施例中，所述预定信令还可以用于指示DCI格式对应的头部预定序列。为了方便通过调整DCI的功能域，功能域不同或包括的功能域的个数不同，则所述DCI格式的DCI尺寸不同。在本实施例中，可以半静态发送所述预定信令指示DCI格式的DCI尺寸，可以通过静态配置确定出不同DCI格式的头部预定序列，从而减少发送头部预定序列产生的信令开销。例如，所述基站还可以周期性通过高层信令等发送所述DCI格式的DCI尺寸和/或对应的头部预定序列。
所述步骤S130可包括：
确定所述头部译码序列的第三子序列是否是所述DCI格式对应的头部预定序列，其中，第三子序列的序列长度小于所述头部译码序列的序列长度。
在本实施例中所述头部译码序列可以分为多个子序列，例如，所述头部译码序列可包括第三子序列，和第三子序列以外的剩余序列。所述第三子序列可为位于头部译码序列中预定位置的子序列，例如，所述第三子序列可为头部译码序列的前X个比特。在本实施例中仅将所述第三子序列与对应的头部预定序列进行匹配，从而可以确定出该头部译码序列是否包括所述头部预定序列。此处“第三子序列”中的“第三”没有特定含义，仅是为了区分前述的头部信息序列(第一子序列)和头部校验序列(第二子序列)。
在本实施例中，所述头部译码序列除了所述第三子序列以外，还包第四子序列。在本实施例中，所述第三子序列和第四子序列均可为前述头部 信息序列的一种。在一些实施例中的，第四子序列可为所述头部译码序列的起始多个比特组成的序列；所述第四子序列可为所述第三子序列之后的比特序列组成。
所述方法还包括：
根据所述头部译码序列的第四子序列，确定所述DCI格式对应的DCI包括的功能域，其中，所述第四子序列和所述第三子序列的序列长度之和，小于或等于所述头部译码序列的序列长度；
根据所述当前DCI包括的功能域，确定所述DCI格式的DCI尺寸。
在本实施例中所述头部还包括第四子序列，该第四子序列可用于指示DCI包括的功能域，同一个DCI格式的DCI包括的功能域不同，则DCI尺寸不同，故在本实施例中。在开始的DCI格式可包括DCI的头部位置和/或头部尺寸的信息，然后DCI的整体尺寸或者负荷尺寸，可以根据第四子序列动态确定。故在本实施例中，所述第四子序列可以动态指示当前DCI的DCI尺寸。
终端在盲解DCI之前，将预先知道DCI格式的头部的结构信息，可包括的功能域及各个功能域的长度等信息，这样的话，通过第四子序列指示了功能域之后，所述终端可以计算出所述DCI格式的当前DCI的DCI尺寸。
在一些实施例中，所述方法还包括：
利用所述头部译码序列的第五子序列对所述第三子序列进行校验；其中，所述第三子序列、第四子序列及第五子序列的序列长度之和，等于所述头部译码序列的序列长度；
若所述第三子序列未通过校验，则终止基于所述DCI格式对所述待译码信息的译码。
在本实施例中所述头部译码序列中还设置有第五子序列，该第五子序列可为前述的头部校验比特形成的序列。
在盲解DCI时，所述终端预先知道DCI格式的头部结构，例如，该头部的序列长度，哪些构成第三子序列、哪些构成第四子序列，哪些构成第五子序列。在一些实施例中，所述第三子序列和所述四子序列及第五子序列，在所述头部译码序列中依次分布。即，所述第四子序列位于所述第三子序列和所述第五子序列之间。
在一些实施例中，所述方法还包括：若所述第三子序列通过校验，根据所述头部译码序列中第四子序列确定DCI格式包括的功能域；根据所述当前DCI包括的功能域，确定所述DCI格式的DCI尺寸。
通过第五子序列的引入，通过第三子序列的校验，可以进一步加速盲解。在一些实施例中，第五子序列对第三子序列及第四子序列进行校验，可以加速盲解。
本实施例还提供一种下行控制信息传输方法，包括：
传输下行控制信息DCI，其中，所述DCI包括：头部，所述头部内中包含用于确定所述DCI的DCI格式对应的头部预定序列。在一些实施例中，所述DCI还包括负荷。
若该传输DCI为发送DCI，则该方法可应用于基站中，若该传输DCI为接收DCI，则该方法可应用于终端中。
在本实施例中所述DCI包括头部和负荷，该头部携带有头部预定序列，这样后续方便终端直接通过头部的解码，快速的确定出当前DCI的DCI格式，以加快DCI的解码速率，于此同时不用在DCI中添加零的方式来降低盲解的难度以提升盲解的效率。
在一些实施例中，所述头部包括以下至少之一：
上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示比特，用于指示资源分配方式；
校验比特，用于指示校验比特；
预留比特。
在本实施例中，所述头部包括的头部预定序列可由所述上下性指示比特、资源分配类型指示比特、校验比特及预留比特中的一个或多个构成，各个指示比特单独用于指示信息，组合形成所述头部预定序列。
在一些实施例中，所述方法还包括：
发送预定信令，其中，所述预定信令，用于指示所述DCI格式的DCI尺寸。
在本实施例中，所述预定信令可为前述的高层信令。基站可以采用静态配置或半静态的方式下发所述预定信令，从而方便终端确定出各个DCI格式的DCI尺寸和/或头部预定序列。
在本实施例中对应DCI格式的DCI尺寸动态的，此时直接利用DCI中的头部中的部分序列来进行动态指示。故所述方法还包括：在所述头部中添加与所述DCI格式对应的所述头部预定序列；根据所述DCI包括的功能域，在所述头部中添加指示所述DCI尺寸的指示序列。此处的，指示序列可以对应译码方法中提到的第四子序列。
如图5所示，本实施例提供一种译码装置，应用于终端，包括：
第一译码模块110，配置为依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；
第二译码模块120，配置为若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
所述第一译码模块110、第二译码模块120均可为程序模块，可以由处理器执行程序模块，实现上述各个模块的功能。
在一些实施例中，所述第二译码模块120，还用于若所述头部译码序列包括所述头部预定序列，根据所述DCI格式对应的DCI尺寸进行所述待译 码信息的继续译码。
在一些实施例中，所述装置还包括：
校验模块，还配置为利用所述头部译码序列的第一子序列对所述头部译码序列的第二子序列进行校验；
第二译码模块120，配置为若所述第二子序列未通过所述校验，则终止基于所述DCI格式对所述待译码信息的译码。
在一些实施例中，所述第二译码模块120，配置为若所述第二子序列通过所述校验，则确定头部译码序列是否包括所述头部预定序列。
在一些实施例中，所述第二译码模块120，配置为若所述第二子序列通过所述校验且所述头部译码序列包括所述头部预定序列，根据所述DCI格式对应的DCI尺寸进行所述待译码信息的继续译码。
在一些实施例中，所述头部包括以下至少之一：上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；资源分配类型指示比特，用于指示资源分配方式；头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特；预留比特。
所述装置还包括：
信令接收模块，用于接收预定信令；例如，前述的高层信令等；
尺寸确定模块，用于根据所述预定信令确定所述DCI格式的DCI尺寸。
在一些实施例中，所述第二译码模块120，还配置为确定所述头部译码序列的第三子序列是否是所述DCI格式对应的头部预定序列，其中，第三子序列的序列长度小于所述头部译码序列的序列长度；
所述装置还包括：
尺寸确定模块，配置为根据所述头部译码序列的第四子序列(对应于前述的指示序列)，确定所述DCI格式对应的DCI包括的功能域，其中，所述第四子序列和所述第三子序列的序列长度之和，小于或等于所述头部 译码序列的序列长度；及根据所述当前DCI包括的功能域，确定所述DCI格式的DCI尺寸。
在一些实施例中，所述装置还包括：
校验模块，配置为利用所述头部译码序列的第五子序列对所述第三子序列进行校验；其中，所述第三子序列、第四子序列及第五子序列的序列长度之和，等于所述头部译码序列的序列长度；
所述第二译码模块120，配置为若所述第三子序列未通过校验，则终止基于所述DCI格式对所述待译码信息的译码。
在一些实施例中，所述尺寸确定模块，配置为若所述第三子序列通过校验，根据所述头部译码序列中第四子序列确定DCI格式包括的功能域；根据所述当前DCI包括的功能域，确定所述DCI格式的DCI尺寸。
本实施例提供一种下行控制信息发送装置，包括：
传输模块，配置为传输DCI，其中，所述DCI包括：头部且不包括补零比特。例如，所述DCI包括：头部和负荷；所述头部内携带有用于确定所述DCI的DCI格式对应的头部预定序列。
本实施例中所述传输模块，也可以对应于程序模块，可以处理器的执行控制天线发送所述DCI。
在一些实施例中，所述头部包括一个或多个功能域；所述功能域包括以下至少之一：
上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型；
头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
在一些实施例中，所述头部，用于所述头部内携带有用于确定所述DCI的DCI尺寸的头部预定序列。
在一些实施例中，所述方法还包括以下至少之一：
预先配置DCI格式所包含的功能域；
通过高层信令下发DCI格式所包含的功能域；
通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
如图6所示，本实施例提供一种通信设备，包括：收发器310、存储器320、处理器330及存储在存储器320上并由处理器330执行的计算机程序；
所述处理器330，分别与收发器310及存储器320连接，用于通过执行所述计算机程序实现前述一个或多个技术方案中译码方法，或前述一个或多个技术方案中下行控制信令传输方法，例如图1至图4所示方法中的一个或多个。
所述收发器310可为移动天线。
所述存储器320可为通信设备中包括存储介质的存储器件，可为随机存储器、只读存储器、存储硬盘等。
所述处理器330可为各种类型的处理器，中央处理器、微处理器、应用处理器、可编程阵列或专用集成电路等。
所述通信设备可为前述的终端或前述的终端或基站。
例如，在一些实施例中，所述收发器，配置为在所述处理器的控制下传输DCI，其中，所述DCI包括：头部且不包括补零比特。
在一些实施例中，所述头部包括一个或多个功能域；所述功能域包括以下至少之一：
上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于 指示资源分配类型；
头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
在一些实施例中，所述头部，用于所述头部内携带有用于确定所述DCI的DCI尺寸的头部预定序列。
在一些实施例中，所述方法还包括以下至少之一：
预先配置DCI格式所包含的功能域；
通过高层信令下发DCI格式所包含的功能域；
通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
在一些实施例中，所述处理器，具体用于依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
所述处理器，还用于若所述头部译码序列与所述头部预定序列相同，则基于所述DCI格式继续译码。
所述处理器，还用于所述方法还包括以下至少之一：
根据预先配置，确定所述DCI格式所包含的功能域；
通过高层信令的接收确定所述DCI格式所包含的功能域；
根据所述DCI的头部携带的指示序列，确定DCI格式所包含的功能域。
所述处理器，还用于所述方法还包括：
根据所述DCI格式所包含的功能域，确定所述DCI格式的DCI尺寸。
本实施例提供一种计算机存储介质，所述计算机存储介质存储有计算机程序；所述计算机程序被执行后，能够实现前述一个或多个技术方案中译码方法，或前述一个或多个技术方案中下行控制信令传输方法，例如图1至图4所示方法中的一个或多个。
本实施例还提供一种下行控制信息DCI发送方法，包括：
发送DCI，其中，所述DCI包括上下行指示域，位于头部；且所述DCI未携带用于实现不同格式DCI尺寸一致的补零比特。
在一些实施例中，所述DCI还包括：
资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型。
在一些实施例中，所述方法还包括：
预先配置DCI格式所包含的功能域；和/或，
通过高层信令下发DCI格式所包含的功能域；和/或，
通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
该功能域可以携带在头部中。
本实施例还提供一种DCI发送方法，包括：
发送DCI，其中，所述DCI包括资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型。
在还有一些实施例中，所述方法还包括：
预先配置DCI格式所包含的功能域；和/或，
通过高层信令下发DCI格式所包含的功能域；和/或，
通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
本实施例还提供一种DCI尺寸确定方法，包括：根据预先配置，确定所述DCI格式所包含的功能域；和/或，通过高层信令的配置确定所述DCI格式所包含的功能域；根据所述DCI格式所包含的功能域，确定所述DCI格式的DCI尺寸。
在一些实施例中，功能域包括以下至少之一：
上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于 指示资源分配类型；
头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
以下结合上述任意实施例提供几个具体示例：
示例1：
DCI格式中有一个头部，包括：DL/UL指示、资源分配类型指示等，具体的，头部的不同取值，对应不同的DCI尺寸。
例如，NR支持两种资源分配类型，其中，类型0采用比特位图的方式进行资源映射；类型1采用连续分配的方式，通知资源分配的起始位置及长度。
NR支持通过高层信令半静态或动态指示两种资源分配方式，从而实现了不同DCI格式的DCI尺寸的指示。
在相同系统带宽下，两种资源分配方式需要的比特位数不同，会造成较大的DCI负荷差异。
当头部的取值不同时，用户先依据头部的取值，确定一个具体的DCI尺寸，然后基于对应的DCI尺寸进行盲检测。本申请具体包括以下两种方式：
方式一：
依据顺序解码的特定，先对头部进行译码，
如果头部译码的值与该DCI格式的头部预定序列不对应时，直接提前终止译码；如果头部译码的取值与头部预定序列对应，继续进行译码操作；
方式二：头部中包括用于一个校验比特，放置在头部的最后位置，然后依据顺序解码的特定，先对头部进行译码，并通过额外的校验比特对头部的其他比特进行校验。如果头部(除去校验比特)译码的取值与 该DCI格式的头部预定序列对应且校验通过时，继续对后续的功能域进行译码操作；否则，提前终止译码。
发送端执行以下操作：
在发送端DCI格式中包含头部及其他信息比特。头部包括：M加X比特，其中M位信息比特，和X位的校验位，X位的校验位是基于按照特定规则生成的，用于校验该头部的其他信息的。DCI还包括N位信息比特中，N与头部中的M位信息比特的取值有关。其中，且M和N为正整数。这N位信息比特可为DCI的负荷中的信息比特。
所述头部对应的M加X位信息比特位于DCI中最前面的位置；其他N位信息比特位于DCI中头部后面的位置。
将所述M加N加X位比特一起按照NR标准进行极化编码。
接收端执行以下操作：
UE先选择一种DCI格式，然后根据候选的DCI格式确定可能的头部的取值，及对应的DCI负荷尺寸；
UE基于候选的DCI尺寸进行检测，如果头部(除去校验比特)译码的取值与DCI的尺寸相对应，且校验通过时，继续对后续的功能域进行译码操作；否则，提前终止译码。
UE依次会DCI格式的DCI尺寸进行检测，如果一个DCI通过头部校验及后续的CRC校验，则表示正确译码；如果没有DCI格式的头部通过校验，例如，对头部进行CRC校验，则表示没有对应该用户的DCI传输。
示例2：
系统半静态配置资源分配方式，上下行其他功能域也是通过半静态配置的。由于对应的功能域不同，所以上下行其他功能域的比特长度可能是不同的。
DCI格式设计中头部包括：
1比特上下行指示，取值为“0”表示上行，取值为“1”表示下行；
1比特资源分配类型指示，取值为“0”表示资源分配类型0，取值为“1”表示资源分配类型1；
一个预留比特。
本示例中，系统半静态配置上行采用资源分配方式类型1，下行采用资源分配方式类型0，则头部的取值分别为UL：[0 1]，DL：[1 0]，例如，可如图7所示。
UE需要首先检测两种DCI格式，DL DCI格式和UL DCI格式，其DCI尺寸分别为K0和K1。首先按照DCI尺寸等于K1(较长比特)时进行顺序译码，确定头部的位置并译出前2个比特位信息后进行判断。如果译码比特为[1 0]，则继续剩余的译码过程；否则终止当前的译码过程，并按照DCI尺寸等于K0时进行顺序译码，并进行类似的译码过程。在本实施例中若有多个DCI格式时，可以优先基于DCI尺寸较大的DCI格式执行译码过程。
示例3：
系统半静态配置资源分配方式，上下行其他功能域也是通过半静态配置的。由于对应的功能域不同，所以上下行其他功能域的比特长度可能是不同的。
DCI格式设计中头部包括：
1比特上下行指示，取值为“0”表示上行，取值为“1”表示下行；
1比特资源分配类型指示，取值为“0”表示资源分配类型0，取值为“1”表示资源分配类型1；
一个头部校验比特。
本示例中，系统半静态配置上行采用资源分配方式类型1，下行采 用资源分配方式类型0，则头部的取值分别为UL：[0 1 y]，DL：[1 0 y]，如图8所示；其中y＝0或1，根据具体的校验方式确定。
UE需要首先检测两种DCI格式，DL DCI格式和UL DCI格式，其DCI尺寸分别为K0和K1。首先按照DCI尺寸等于K1(较长比特)时进行顺序译码，确定头部的位置并译出前3个比特位信息后进行判断。
如果译码前两个比特为[1 0]，且通过第三个比特的校验，则继续剩余的译码过程；否则终止当前的译码过程，并按照DCI尺寸等于K0时进行顺序译码，并进行类似的译码过程。
示例4：
系统动态配置资源分配方式，上下行其他功能域是通过半静态配置的。由于对应的功能域不同，所以上下行其他功能域的比特长度可能是不同的。考虑到支持动态配置两种资源分配类型，共有四种DCI尺寸，分别是：
上行资源调度加资源分配类型0，长度为K0；
上行资源调度加资源分配类型1，长度为K1；
下行资源调度加资源分配类型0，长度为K2；
下行资源调度加资源分配类型1，长度为K3。
DCI格式设计中头部包括：取值为“1”比特上下行指示，取值为“0“表示上行，1表示下行；
1比特资源分配类型指示，取值为“0”表示资源分配类型0，取值为“1”表示资源分配类型1；
一个预留比特；
一个头部校验比特。
本示例中，系统上下行均动态配置资源分配类型，则头部的取值分别可能为UL：[0 1 x y]，DL：[1 0 x y]，其中x＝0或1，如图9所示， 为预留比特；y＝0或1，根据具体的校验方式确定。
UE需要首先检测两种DCI格式，DL DCI格式和UL DCI格式，由于每种DCI格式可能对应两种资源分配类型。因此DCI尺寸分别为4种，即K0，K1，K2及K3，假设长度为K2>K0>K3>K1。
首先按照DCI尺寸等于K2(假设比特数目最多)时进行顺序译码，确定头部的位置并译出前4个比特位信息后进行判断。
如果译码前两个比特为[1 0 x]，且通过第四个比特的校验，则继续剩余的译码过程；否则终止当前的译码过程，并按照DCI尺寸等于K0，K3，K1时依次进行顺序译码，并进行类似的译码过程。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本申请各实施例中的各功能单元可以全部集成在一个处理模块中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种下行控制信息DCI传输方法，包括：
    传输DCI，其中，所述DCI包括：头部且不包括补零比特。
  2. 根据权利要求1所述的方法，其中，所述头部包括一个或多个功能域；所述功能域包括以下至少之一：
    上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
    资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型；
    头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
  3. 根据权利要求1或2所述的方法，其中，所述头部中包含用于确定所述DCI的DCI尺寸的头部预定序列。
  4. 根据权利要求1或2所述的方法，其中，
    所述方法还包括以下至少之一：
    预先配置DCI格式所包含的功能域；
    通过高层信令下发DCI格式所包含的功能域；
    通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
  5. 一种译码方法，包括：
    依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；
    若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
  6. 根据权利要求5所述的方法，其中，所述方法还包括：
    若所述头部译码序列与所述头部预定序列相同，则基于所述DCI格式 继续译码。
  7. 根据权利要求5或6所述的方法，其中，
    所述方法还包括以下至少之一：
    根据预先配置，确定所述DCI格式所包含的功能域；
    通过高层信令的接收确定所述DCI格式所包含的功能域；
    根据所述DCI的头部携带的指示序列，确定DCI格式所包含的功能域。
  8. 根据权利要求7所述的方法，其中，
    所述方法还包括：
    根据所述DCI格式所包含的功能域，确定所述DCI格式的DCI尺寸。
  9. 一种下行控制信息DCI发送装置，应用于基站中，包括：
    传输模块，用于传输DCI，其中，所述DCI包括：头部且不包括补零比特。
  10. 一种译码装置，应用于终端，包括：
    第一译码模块，配置为依据DCI格式对应的DCI尺寸，对头部信息进行译码，得到头部译码序列；
    第二译码模块，配置为若所述头部译码序列与头部预定序列不相同，则终止基于所述DCI格式的译码。
  11. 一种下行控制信息DCI发送方法，包括：
    发送DCI，其中，所述DCI包括上下行指示域，位于头部；且所述DCI未携带用于实现不同格式DCI尺寸一致的补零比特。
  12. 根据权利要求11所述的方法，所述DCI还包括：
    资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型。
  13. 根据权利要求11或12所述的方法，其中，还包括:
    预先配置DCI格式所包含的功能域；和/或，
    通过高层信令下发DCI格式所包含的功能域；和/或，
    通过所述DCI的头部携带的指示序列，指示DCI格式所包含的功能域。
  14. 一种下行控制信息DCI发送方法，包括：
    发送DCI，其中，所述DCI包括资源分配类型指示域，所述资源分配类型指示域包括：一个或多个资源分配类型指示比特，用于指示资源分配类型。
  15. 一种DCI尺寸确定方法，包括：
    根据预先配置，确定所述DCI格式所包含的功能域；和/或，通过高层信令的配置确定所述DCI格式所包含的功能域；
    根据所述DCI格式所包含的功能域，确定所述DCI格式的DCI尺寸。
  16. 根据权利要求15所述的方法，
    功能域包括以下至少之一：
    上下行指示域，包括一个或多个上下行指示比特，用于指示所述DCI为上行资源调度的DCI或下行资源调度的DCI；
    资源分配类型指示域，包括一个或多个资源分配类型指示比特，用于指示资源分配类型；
    头部校验域，包括一个或多个头部校验比特，用于校验所述头部除所述头部校验比特以外的剩余比特。
  17. 一种通信设备，包括：收发器、存储器、处理器及存储在存储器上并由所述处理器执行的计算机程序；
    所述处理器分别与收发器及存储器连接，配置为通过执行计算机程序实现前述权利要求1至4或5至8、11至16任一项提供的方法。
  18. 一种计算机存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序被执行后，实现前述权利要求1至4或5至8、11至16任一项提供的方法。
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