WO2023207922A1 - 一种控制信息传输方法和装置 - Google Patents

一种控制信息传输方法和装置 Download PDF

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Publication number
WO2023207922A1
WO2023207922A1 PCT/CN2023/090394 CN2023090394W WO2023207922A1 WO 2023207922 A1 WO2023207922 A1 WO 2023207922A1 CN 2023090394 W CN2023090394 W CN 2023090394W WO 2023207922 A1 WO2023207922 A1 WO 2023207922A1
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Prior art keywords
subsequences
dci
sequence
terminal
subsequence
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PCT/CN2023/090394
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English (en)
French (fr)
Inventor
黄宗浩
李航
黄秀璇
丁梦颖
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华为技术有限公司
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Publication of WO2023207922A1 publication Critical patent/WO2023207922A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets

Definitions

  • the present application relates to the field of wireless communication technology, and in particular, to a control information transmission method and device.
  • the information sent by the wireless access network device to the terminal is called downlink information, and the downlink information includes downlink control information. and downstream data information.
  • the downlink control channel is used to carry downlink control information (DCI).
  • the downlink control channel can be a physical downlink control channel (PDCCH).
  • the downlink data channel is used to carry downlink data information, such as the downlink data channel. It can be a physical downlink shared channel (PDSCH).
  • the DCI carried in the PDCCH is used to indicate the configuration information of the PDSCH (for example, time domain/frequency domain location, modulation information, coding information, etc.).
  • the first aspect is to provide a control information transmission method.
  • This method can be executed by the terminal, or by the chip of the terminal.
  • the terminal receives the first sequence from the radio access network device, and the first sequence is carried on M*N CCEs.
  • M*N is the CCE aggregation level
  • M is an integer greater than 1
  • N is a positive integer.
  • the terminal demodulates the first sequence to generate a second sequence, and then processes the second sequence to obtain M first subsequences.
  • the terminal decodes the M first subsequences and obtains M second subsequences. If the terminal passes the verification of each of the M second subsequences, the terminal generates DCI based on the M second subsequences.
  • the terminal can obtain the first sequence from M*N CCEs. After demodulating the first sequence to obtain the second sequence, the terminal can process the second sequence into M first subsequences. The terminal can process the M first subsequences. The subsequence decoding process obtains M second subsequences. Each second subsequence can contain part of the control information.
  • the DCI generated by the terminal based on the M second subsequences can indicate the information capacity compared with the traditional DCI transmission scheme. The information capacity that DCI can indicate has been greatly improved, making it possible to expand DCI-related communication functions.
  • the terminal processes the second sequence according to the mapping relationship between the M first subsequences in the second sequence and the M*N CCEs to obtain the M first subsequences; wherein the modulation symbol corresponding to each first subsequence of the M first subsequences is mapped to N of the M*N CCEs. on CCEs, and modulation symbols corresponding to different first subsequences are mapped to N different CCEs.
  • the modulation symbols corresponding to each of the M first subsequences are mapped to N CCEs, which facilitates terminal reuse of existing hardware and simplifies implementation.
  • the terminal performs a cascade operation on the M second subsequences according to the order in which the modulation symbols corresponding to the M second subsequences are mapped to the M*N CCEs to generate the DCI.
  • the terminal deletes the padding field after performing a cascading operation on the M second subsequences.
  • the terminal determines the number of segments M of the second sequence based on the CCE aggregation level, the length of the DCI and a first correspondence, wherein the first correspondence is the number of segments of the DCI.
  • the first corresponding relationship or the second corresponding relationship is predefined by the protocol, or the terminal receives the first radio resource control RRC signaling from the radio access network device; the first RRC signaling Indicate the first corresponding relationship or the second corresponding relationship.
  • the terminal receives second RRC signaling from the radio access network device; the second RRC signaling indicates the segment number M.
  • the terminal stops verifying the unverified third subsequence of the M second subsequences. Decoding processing of the first subsequence corresponding to the two subsequences; or if the verification of any second subsequence among the M second subsequences fails, the terminal performs the decoding process according to one of the M second subsequences. At least one second subsequence that passes the verification determines the control information.
  • the terminal when the terminal fails to pass the verification of any one of the M second subsequences, it can stop the decoding process. Or the terminal can determine the control information based on at least one second subsequence that passes the verification among the M second subsequences, so as to fully utilize the available fields in the at least one second subsequence that passes the verification and improve communication efficiency.
  • the decoding process may include at least one of derate matching, channel decoding, deinterleaving, and cyclic redundancy checking.
  • the terminal demodulates the first sequence, it descrambles the demodulated first sequence to generate the second sequence.
  • a control information transmission method is provided.
  • the method may be executed by the wireless access network device, or by a chip of the wireless access network device.
  • the radio access network device performs segmentation processing on the downlink control information DCI according to the segment number M of the DCI to obtain M second subsequences, where M is an integer greater than 1.
  • the radio access network device performs encoding processing on each of the M second subsequences to obtain M first subsequences, and then performs a cascade operation on the M first subsequences, A second sequence is obtained, and then the radio access network device modulates the second sequence to generate a first sequence.
  • the radio access network device sends the first sequence to the terminal, and the first sequence is carried on M*N control channel elements CCE, where M*N is the CCE aggregation level, and N is a positive integer.
  • This method is a wireless access network side method corresponding to the first aspect, and therefore can also achieve the beneficial effects achieved by the first aspect.
  • the modulation symbols corresponding to each of the M first subsequences are mapped to N CCEs among the M*N CCEs, and different first subsequences are The modulation symbols corresponding to the subsequence are mapped to N different CCEs.
  • the radio access network device determines the length of the DCI according to the length of the DCI and the number of segments of the DCI.
  • the quantity M determines the length of each second subsequence in the M second subsequences.
  • the radio access network device performs segmentation processing on the downlink control information according to the length of each second subsequence to obtain the M second subsequences.
  • the M second subsequences have the same length; or the first M-1 second subsequences among the M second subsequences have the same length; or the M second subsequences have the same length.
  • the last M-1 second subsequences of the two subsequences have the same length.
  • the radio access network device adds a padding field to the DCI so that the lengths of the M second subsequences are the same.
  • the radio access network device determines the number of segments M of the DCI based on the CCE aggregation level, the length of the DCI, and a first correspondence relationship, where the first correspondence relationship is The correspondence between the length of the DCI, the CCE aggregation level and the number of segments M; or the radio access network device determines the number of segments M of the DCI according to the CCE aggregation level and the second correspondence, wherein the first The second correspondence is the correspondence between the CCE aggregation level and the number of segments M.
  • the first corresponding relationship or the second corresponding relationship is predefined by a protocol; or the radio access network device sends first radio resource control RRC signaling to the terminal, and the The first RRC signaling indicates the first corresponding relationship or the second corresponding relationship.
  • the radio access network device sends second RRC signaling to the terminal; the second RRC signaling indicates the number of segments M.
  • the encoding processing may include: at least one of adding a cyclic redundancy check field, interleaving processing, channel coding, and rate matching.
  • the radio access network device performs scrambling on the second sequence before modulating the second sequence.
  • a communication device may be a terminal or a chip in the terminal.
  • the communication device includes a transceiver unit and a processing unit.
  • the transceiver unit is configured to receive the first sequence from the radio access network device, and the first sequence is carried on M*N CCEs.
  • M*N is the CCE aggregation level
  • M is an integer greater than 1
  • N is a positive integer.
  • a processing unit is used to demodulate the first sequence to generate a second sequence, and then process the second sequence to obtain M first subsequences.
  • the terminal decodes the M first subsequences and obtains M second subsequences. If the terminal passes the verification of each of the M second subsequences, the terminal generates DCI based on the M second subsequences.
  • the processing unit is specifically configured to process the second sequence to obtain the result according to the mapping relationship between the M first subsequences in the second sequence and the M*N CCEs.
  • the modulation symbol corresponding to a subsequence is mapped to N different CCEs.
  • a fourth aspect provides a communication device.
  • the device may be a wireless access network device or a module in the wireless access network device.
  • the communication device includes a transceiver unit and a processing unit.
  • the processing unit is configured to perform segmentation processing on the downlink control information DCI according to the number of segments M of the DCI, to obtain M second subsequences, where M is an integer greater than 1; perform segmentation processing on the M second subsequences respectively.
  • Each second subsequence in the sequence is encoded to obtain M first subsequences; the M first subsequences are cascaded to obtain a second sequence; modulating the second sequence to generate a first sequence;
  • the transceiver unit is configured to send the first sequence to the terminal.
  • the first sequence is carried on M*N control channel units CCE, where M*N is the CCE aggregation level, and N is a positive integer.
  • the modulation symbols corresponding to each of the M first subsequences are mapped to N CCEs among the M*N CCEs, and different first subsequences correspond to modulation symbols are mapped to N different CCEs.
  • the present application provides a communication device, including a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer program or instructions to execute Each implementation method of the above first aspect or second aspect.
  • the memory may be located within the device or external to the device.
  • the number of processors is one or more.
  • the present application provides a communication device, including: a processor and an interface circuit.
  • the interface circuit is used to communicate with other devices.
  • the processor is used in each implementation method of the first aspect or the second aspect.
  • the present application provides a communication system, including: a terminal for performing the implementation methods of the first aspect, and a radio access network device for performing the implementation methods of the second aspect.
  • the present application also provides a chip system, including: a processor configured to execute each implementation method of the first aspect or the second aspect.
  • the present application also provides a computer program product.
  • the computer product includes a computer program. When the computer program is run, each implementation method of the first aspect or the second aspect is executed.
  • the present application also provides a computer-readable storage medium.
  • Computer programs or instructions are stored in the computer-readable storage medium.
  • the instructions are run on a computer, the first aspect or the second aspect is implemented. various implementation methods.
  • Figure 1 is a schematic diagram of the architecture of a communication system applied in an embodiment of the present application
  • Figure 2 is a schematic diagram of resources occupied by a PDCCH provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of a DCI processing flow provided by an embodiment of the present application.
  • Figure 4 is an exemplary flow chart of a control information transmission method provided by an embodiment of the present application.
  • Figure 5 is an example diagram of a mapping relationship between a first subsequence and a CCE provided by an embodiment of the present application
  • Figure 6 is a schematic diagram of the mapping relationship between the first subsequence, the second subsequence and the CCE provided by the embodiment of the present application;
  • Figure 7 is one of the structural schematic diagrams of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 1 is a schematic architectural diagram of a communication system 1000 applied in an embodiment of the present application.
  • the communication system includes a wireless access network 100 and a core network 200.
  • the communication system 1000 may also include the Internet 300.
  • the radio access network 100 may include at least one radio access network device (110a and 110b in Figure 1), and may also include at least one terminal (120a-120j in Figure 1).
  • the terminal communicates with the wireless access network equipment wirelessly Wireless access network equipment is connected to the core network through wireless or wired methods.
  • the core network equipment and the radio access network equipment can be independent and different physical devices, or the functions of the core network equipment and the logical functions of the radio access network equipment can be integrated on the same physical device, or they can be one physical device.
  • Figure 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Figure 1 .
  • Wireless access network equipment is access equipment for terminals to access the communication system through wireless means.
  • Wireless access network equipment can be a base station, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), or the next generation of the fifth generation (5th generation, 5G) mobile communication system.
  • Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also complete the base station part
  • a functional module or unit for example, can be a centralized unit (CU) or a distributed unit (DU).
  • the CU here completes the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also complete the functions of the service data adaptation protocol (SDAP); DU completes the functions of the base station
  • the functions of the wireless link control layer and medium access control (MAC) layer can also complete some or all of the physical layer functions.
  • the wireless access network equipment may be a macro base station (110a in Figure 1), a micro base station or an indoor station (110b in Figure 1), or a relay node or donor node.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the wireless access network equipment.
  • the following description takes a base station as an example of a radio access network device.
  • the terminal is a device with wireless transceiver function that can send signals to the base station or receive signals from the base station.
  • the terminal can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablets, computers with wireless transceiver functions, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal.
  • Base stations and terminals can be fixed-location or mobile. Base stations and terminals can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.
  • the helicopter or drone 120i in Figure 1 may be configured as a mobile base station.
  • the terminal 120i is Base station; but for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is through a wireless air interface protocol.
  • communication between 110a and 120i can also be carried out through an interface protocol between base stations.
  • relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively called communication devices.
  • 110a and 110b in Figure 1 can be called communication devices with base station functions
  • 120a-120j in Figure 1 can be called communication devices with terminal functions.
  • Communication between base stations and terminals, between base stations and base stations, and between terminals can be carried out through licensed spectrum. It can communicate through unlicensed spectrum, or it can communicate through licensed spectrum and unlicensed spectrum at the same time; it can communicate through spectrum below 6 gigahertz (GHz), it can also communicate through spectrum above 6GHz, and it can also communicate at the same time. Uses spectrum below 6GHz and spectrum above 6GHz for communication.
  • the embodiments of the present application do not limit the spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by modules (such as chips) in the base station, or may be performed by a control subsystem that includes the base station functions.
  • the control subsystem containing base station functions here can be the control center in the above application scenarios such as smart grid, industrial control, smart transportation, smart city, etc.
  • the functions of the terminal can also be performed by modules in the terminal (such as chips or modems), or by a device containing the terminal functions.
  • the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel.
  • the downlink information may include downlink control information and downlink data information.
  • the downlink control channel is used to carry downlink control information.
  • the downlink control channel may be a physical downlink control channel (PDCCH); the downlink data channel is used to carry downlink Data information, such as the downlink data channel can be a physical downlink shared channel (PDSCH).
  • the terminal needs to establish a wireless connection with the cell controlled by the base station.
  • the cell with which a terminal has established a wireless connection is called the serving cell of the terminal. When the terminal communicates with the serving cell, it will also be interfered by signals from neighboring cells.
  • PDSCH, PDCCH and PUSCH are only examples of downlink data channels, downlink control channels and uplink data channels respectively.
  • data channels and control channels There may be different names, and the embodiments of this application do not limit this.
  • each base station can be divided into one or more cells.
  • a cell can be configured with one downlink carrier and optionally at least one uplink carrier.
  • the cell that provides services is called a serving cell.
  • the cell involved in this application may also be a serving cell.
  • the frequency domain resources allocated to a cell can be called carriers.
  • downlink frequency domain resources configured for a cell may be called downlink carriers
  • continuous uplink frequency domain resources configured for a cell may be called uplink carriers.
  • the transmission resources involved in the downlink transmission process can be divided into a control area available for transmitting downlink control information and a data area available for transmitting downlink data information.
  • the control area includes time domain resources and frequency domain resources that can be occupied by the downlink control channel
  • the data area includes the time domain resources and frequency domain resources that can be occupied by the downlink data channel.
  • the location where the PDCCH exists can be determined in the control area
  • the location where the PDSCH exists can be determined in the data area.
  • a control-resource set is a time-frequency resource within the control area.
  • a CORESET in the time domain, can be configured as one or several consecutive orthogonal frequency division multiplexing (OFDM) symbols; in the frequency domain, a CORESET can be a group of consecutive or Discontinuous frequency domain resources.
  • OFDM orthogonal frequency division multiplexing
  • a CORESET in the frequency domain, can be a group of consecutive or Discontinuous frequency domain resources.
  • CORESET is used to indicate the time domain and frequency domain range in the time slot in which PDCCH may exist.
  • the relevant parameters of CORESET can be configured through radio resource control (RRC) signaling.
  • RRC radio resource control
  • the number of control channel elements (CCE) used to carry one PDCCH is called the CCE aggregation level.
  • the CCE aggregation level can be 1, 2, 4, 8, 16, etc. Since different PDCCHs can use different CCE aggregation levels, that is, contain different numbers of REs, the aggregation level also describes the number of physical resources occupied by the PDCCH channel. When transmitting the same control information, the greater the number of CCEs corresponding to the PDCCH, the better the transmission performance.
  • CCE resource elements groups
  • REG resource elements groups
  • REs resource units
  • One REG corresponds to one resource block RB on one OFDM symbol, that is, one REG includes resources corresponding to one symbol in the time domain and one RB in the frequency domain.
  • the resources that may be occupied by PDCCH and the resources actually occupied by PDCCH can be described by CCE.
  • FIG. 2 is a schematic diagram of resources occupied by a PDCCH provided by an embodiment of the present application.
  • Figure 2 shows the relationship between PDCCH, CCE and REG when the aggregation level is 2: PDCCH is carried on 2 CCEs, and each CCE contains 6 REGs.
  • the base station can configure at least one aggregation level to carry PDCCH to support efficient transmission of different downlink control information (DCI) formats under different channel bandwidths and channel environments.
  • DCI downlink control information
  • the standard protocol stipulates or the base station configures the number of PDCCH candidates under each aggregation level. According to the CCE aggregation level and the number of PDCCH candidates under each aggregation level, the time-frequency resource location of each PDCCH candidate can be obtained, that is, the possible PDCCH The location of the time-frequency resource that appears.
  • the UE-specific search space Take the UE-specific search space as an example. For example, when the CCE aggregation level is 1, read 1 CCE at the starting position of the UE-specific search space. This 1 CCE is a PDCCH candidate, and the UE will perform rate matching on the read data. , decode, and then use the radio network temporary identifier (RNTI) to descramble and CRC check the obtained data. If the CRC check is successful, the UE will know that this PDCCH is sent to itself, and can further decode it. DCI content.
  • RNTI radio network temporary identifier
  • DCI The content transmitted (carried) on the PDCCH is called DCI.
  • DCI can include uplink and downlink resource scheduling information, power control information, time slot format information, etc.
  • Figure 3 is a schematic diagram of a DCI processing flow provided by an embodiment of the present application.
  • (a) in Figure 3 shows a DCI processing flow on the base station side provided by an embodiment of the present application.
  • the base station can add a CRC field to the DCI, and can use the RNTI to scramble the last 16 bits in the CRC field (also called masking), where the RNTI used for scrambling can be Determined according to the purpose of DCI, or configured by the base station.
  • the base station performs interleaving processing, channel coding and rate matching (RM) on the DCI with added CRC field.
  • the channel coding can be polar coding and RM can include sub-block interleaving.
  • the base station scrambles and modulates the rate-matched information to obtain modulation symbols. After mapping the modulation symbols to CCE, the base station can send the modulation signal to the terminal, thereby realizing DCI transmission.
  • FIG. 3 shows a terminal-side DCI processing flow provided for the embodiment of the present application.
  • the terminal after demapping the modulated signal from the CCE, the terminal performs demodulation and descrambling on the modulated signal.
  • the terminal performs rate de-matching, channel decoding, deinterleaving and demasking on the information obtained after the descrambling process; the channel decoding may be polar decoding.
  • the terminal passes the CRC check on the information obtained by the demasking process, it deletes the CRC field in the information obtained by the demasking process and obtains the DCI.
  • Multiple means two or more; at least one means one or more.
  • DCI can be used to schedule downlink data transmission, but due to the coding limitations of current encoders, the length of DCI needs to be smaller than the set length.
  • the maximum length of DCI defined in the existing protocol is 164 bits, which also includes a 24-bit CRC field.
  • DCI on one carrier can schedule downlink transmission of multiple carriers at the same time. This technology can be called single-DCI technology.
  • one DCI needs to contain control information of multiple cells, so the length of the DCI will increase.
  • FIG. 4 is an exemplary flow chart of a control information transmission method provided by an embodiment of the present application. This method can be executed by the terminal and the wireless access network device in the communication system shown in Figure 1. For the convenience of description, the following embodiments are introduced by taking the base station as the wireless access network device as an example. Referring to Figure 4, the method includes the following steps:
  • the base station performs segmentation processing on the DCI according to the number of segments M of the DCI, and obtains M second subsequences.
  • the base station may segment the DCI to divide the DCI into M second subsequences.
  • M is the number of segments used by the base station to segment DCI, and M is an integer greater than 1.
  • Each of the M second subsequences obtained by the base station segmenting the DCI includes a part of the data in the DCI.
  • the second subsequence here can also be called a code block (CB).
  • the base station When the base station performs segmentation processing on DCI, it can first determine the number M of DCI segments.
  • the number of segments M of the DCI may be related to the CCE aggregation level and the length of the DCI, or the number of segments M of the DCI may be related to the CCE aggregation level.
  • the base station can determine the number of DCI segments M according to any of the following methods:
  • Method 1 The base station determines the number M of DCI segments based on the CCE aggregation level, the length of the DCI, and the first correspondence.
  • the first correspondence relationship is the correspondence relationship between the length of the DCI, the CCE aggregation level and the number of segments.
  • Table 1 is an example of a first correspondence relationship provided by the embodiment of the present application.
  • NS in Table 1 means not supported.
  • the base station can determine the DCI points based on the length of the DCI, the CCE aggregation level and the first corresponding relationship.
  • the number of segments is M.
  • the base station After the base station segments the DCI according to the determined number of DCI segments M, it can make the length of each second subsequence less than or equal to the maximum DCI length defined in the current protocol, so that the base station can When the segmented M second sub-sequences are subjected to coding processing and other operations respectively, the existing DCI processing flow can be reused as much as possible (as shown in (a) in Figure 3), so that the control information transmission provided by the embodiment of the present application
  • the method can be implemented by modifying the software on the premise of reusing existing hardware, thereby ensuring the coding performance without increasing the complexity of the coding process.
  • Method 2 The base station determines the number M of DCI segments based on the CCE aggregation level and the second corresponding relationship.
  • the second correspondence relationship is the relationship between the CCE aggregation level and the number of segments.
  • Table 2 is an example of a second correspondence relationship provided by the embodiment of the present application.
  • the base station may send RRC signaling to the terminal, where the RRC signaling indicates the first correspondence or the second correspondence; or the first correspondence or the second correspondence may be predefined by the protocol.
  • the base station may also send RRC signaling to the terminal, where the RRC signaling indicates the number M of segments.
  • the first correspondence relationship shown in Table 1 and the second correspondence relationship shown in Table 2 are only an example provided by the embodiment of the present application and are not limiting.
  • M in the first correspondence relationship or the second correspondence relationship The value of can be one of at least one candidate value.
  • the candidate value of M may be determined based on the CCE aggregation level supported by the current protocol. Specifically, taking the CCE aggregation levels ⁇ 1,2,4,8,16 ⁇ currently supported by the protocol as an example, we call ⁇ 1,2,4,8,16 ⁇ set A. If the current CCE aggregation level is AL, the value of AL/M can be a subset of set A.
  • the subset includes the values of the current CCE aggregation level in set A and values smaller than the current CCE aggregation level.
  • the value of AL/M is N in the embodiment of the present application, and N is the number of CCEs mapped to the modulation symbol corresponding to each second subsequence (for details, see S405, which will not be described in detail here).
  • N can be a value in the CCE aggregation level supported by the current protocol, so that the modulation symbols corresponding to each second subsequence are mapped to N CCE processing methods and devices, and the existing DCI corresponding
  • the method and device for mapping modulated signals to CCE make the control information transmission method provided by this application easier to implement.
  • both M and N are a subset of set A, and the subset includes the values of the current CCE aggregation level in set A and the values smaller than the current CCE aggregation level.
  • the candidate set of N can be ⁇ 1,2,4 ⁇
  • the candidate set of M can be ⁇ 1,2,4 ⁇
  • the candidate set of M can be ⁇ 1,2,4,8,16 ⁇ .
  • the base station can determine the length of each of the M second subsequences based on the length of the DCI and the number M of DCI segments.
  • the base station can segment the DCI according to the length of each second subsequence to obtain M second subsequences.
  • the M second subsequences may have the same length; or the first M-1 second subsequences among the M second subsequences may have the same length; or the last M-1 second subsequences among the M second subsequences may have the same length.
  • the length of the second subsequence is the same.
  • the M second subsequences have the same length.
  • T 1 is the length of each second subsequence
  • S is the length of DCI
  • the base station can add a padding field to the DCI, and then add the padding field after the padding field.
  • DCI performs segmentation processing.
  • the base station can add 0s or 1s to the high bits of the DCI bit sequence, or add 0s or 1s to the low bits of the DCI bit sequence, so that the DCI after adding the padding field can be evenly divided into M second sub-digits of the same length. sequence.
  • the length of the DCI after padding the fields can satisfy the following formula:
  • S' is the DCI length after the padding field.
  • the base station may determine that the length of each second subsequence is 124, and the base station may add a padding field to the high bits of the DCI bit sequence, where the padding field includes two bits with a value of 0.
  • the base station can divide the DCI after adding the padding field into 8 second subsequences, and the length of each second subsequence is 124.
  • the first M-1 second subsequences among the M second subsequences have the same length.
  • the base station can determine the length of the first M-1 second subsequences among the M subsequences based on the length of the DCI and the number of segments M. For example, the length of the first M-1 second subsequences satisfies the following formula:
  • T 2 is the length of the first M-1 second subsequences
  • S is the length of DCI
  • the base station may also determine the length of the M-th second subsequence among the M subsequences. For example, the length of the M-th second subsequence satisfies the following formula:
  • T 3 is the length of the M-th second subsequence.
  • the base station can segment the DCI according to the length of the first M-1 second subsequences and the length of the Mth second subsequence among the determined M second subsequences to obtain M second subsequences.
  • the base station can determine that the length of the first 7 second subsequences is 124, and the length of the 8th second subsequence is 122.
  • the last M-1 second subsequences among the M second subsequences have the same length.
  • the base station can determine the length of the last M-1 second subsequences among the M subsequences based on the length of the DCI and the number of segments M. For example, the length of the last M-1 second subsequences satisfies the following formula:
  • T 4 is the length of the last M-1 second subsequences
  • S is the length of DCI
  • the base station can also determine the length of the first second subsequence among the M subsequences. For example, the length of the first second subsequence satisfies the following formula:
  • T 5 is the length of the M-th second subsequence.
  • the base station can segment the DCI according to the length of the first second subsequence and the length of the next M-1 second subsequences among the determined M second subsequences to obtain M second subsequences.
  • the base station can determine that the length of the first second subsequence is 122, and the length of the last seven second subsequences is 124.
  • the base station separately encodes each of the M second subsequences to obtain M first subsequences.
  • the encoding processing performed by the base station on each second subsequence may include: adding a CRC field, interleaving processing, channel coding, and rate matching.
  • the channel coding may be polar coding, and the rate matching may include block interleaving processing, bit selection and bit interleaving processing.
  • the base station can also use the RNTI to scramble the last 16 bits in the CRC field when adding a CRC field to each second subsequence.
  • the lengths of the M second subsequences obtained by the base station after segmentation processing of the DCI can be the same, and the base station can separately process the M second subsequences based on the same coding parameters.
  • the second subsequence performs channel coding to improve coding efficiency.
  • the code rate of the M-th second subsequence after encoding will be smaller than the first M-1 second subsequences, which can improve The decoding success rate of the M second subsequence.
  • the coding rate of the first second subsequence after encoding will be smaller than that of the last M-1 second subsequences, thereby improving the coding rate of the first second subsequence. Decoding success rate.
  • the base station performs cascade operations on M first subsequences to obtain the second sequence.
  • the base station can perform a cascade operation on the M first subsequences according to the order of the second subsequences corresponding to each first subsequence to obtain the second sequence.
  • the base station can modulate the second sequence to generate the first sequence.
  • the base station may also perform scrambling on the second sequence before modulating the second sequence.
  • S405 The base station sends the first sequence to the terminal.
  • the first sequence sent by the base station to the terminal is carried on M*N CCEs, where M*N is the CCE aggregation level, and N is a positive integer. That is to say, in the embodiment of this application, the PDCCH is carried on M*N CCEs, and the base station can send the first sequence to the terminal through M*N CCEs.
  • the first sequence is obtained by the base station modulating the second sequence
  • the second sequence is obtained by the base station performing a cascade operation on M first sub-sequences
  • the first sequence includes M first sub-sequences.
  • the modulation symbol corresponding to the subsequence is the corresponding modulation symbol of the first sub-sequence in the second sequence of the base station. obtained by modulating the part.
  • the modulation symbols corresponding to each first subsequence in the first sequence are mapped to N CCEs among the M*N CCEs, and the modulation symbols corresponding to different first subsequences are mapped to N different CCEs.
  • Figure 5 is an example diagram of a mapping relationship between a first subsequence and a CCE provided by an embodiment of the present application.
  • the first sequence includes 4 modulation symbols corresponding to the first subsequences, and the 4 first subsequences are CB * 0 ⁇ CB * 3 respectively; the CCE aggregation level is 8, and the 8 CCEs are CCE0 ⁇ CCE7.
  • the modulation symbols corresponding to each first subsequence are mapped to two CCEs, and the modulation symbols corresponding to different first subsequences are mapped to two different CCEs.
  • the modulation symbol corresponding to CB * 0 is mapped to CCE0 and CCE1
  • the modulation symbol corresponding to CB * 1 is mapped to CCE2 and CCE3
  • the modulation symbol corresponding to CB * 2 is mapped to CCE4 and CCE5
  • the modulation symbol corresponding to CB * 3 Map to CCE6 and CCE7.
  • the base station can split the long DCI into multiple sub-sequences for processing respectively, and map the modulation symbols corresponding to the multiple sub-sequences to multiple CCEs.
  • the longest DCI that can support transmission can be increased. length, thereby flexibly realizing DCI transmission and solving the existing problem of being unable to transmit DCI beyond the set length.
  • the terminal can demodulate the first sequence to generate a second sequence.
  • the terminal may also perform descrambling processing on the demodulated first sequence.
  • S407 The terminal processes the second sequence to obtain M first subsequences.
  • the terminal may determine the number of segments M of the second sequence according to any of the following methods:
  • Method 1 The terminal determines the number M of DCI segments based on the CCE aggregation level, the length of the DCI, and the first corresponding relationship.
  • the first correspondence relationship may be a correspondence relationship between the length of the DCI, the CCE aggregation level, and the number of segments.
  • the first corresponding relationship can be as shown in Table 1.
  • Method 2 The terminal determines the number M of DCI segments based on the CCE aggregation level and the second corresponding relationship.
  • the second correspondence relationship may be the relationship between the CCE aggregation level and the number of segments.
  • the second corresponding relationship can be as shown in Table 2.
  • first correspondence relationship or the second correspondence relationship may be predefined by the protocol; or the terminal may receive RRC signaling sent by the base station, and the RRC signaling indicates the first correspondence relationship or the second correspondence relationship.
  • the method for the terminal to determine the number of segments M of the second sequence according to mode 1 or mode 2 can be implemented by referring to the method in which the base station determines the number of segments M of the DCI in S401, and repeated details will not be described again.
  • Method 3 The terminal receives RRC signaling sent by the base station, and the RRC signaling indicates the number of segments M.
  • the RRC signaling sent by the base station to the terminal may include a field indicating the number of segments M. Then, after receiving the RRC signaling sent by the base station, the terminal may determine the number of segments M according to the RRC signaling.
  • the terminal after determining the number M of segments in the second sequence, the terminal can perform the mapping on the second sequence based on the mapping relationship between the M first subsequences and the M*N CCEs in the second sequence. After processing, M first subsequences are obtained.
  • the terminal can map the second sequence with The corresponding part of the modulation symbols carried on CCE0 and CCE1 is used as the first first subsequence; the modulation symbol corresponding to CB * 1 is mapped to CCE2 and CCE3, then the terminal can match the second sequence with the modulation symbols carried on CCE2 and CCE3.
  • the part corresponding to the modulation symbol is is the second first subsequence; and by analogy, the terminal can process the second sequence to obtain four first subsequences.
  • S408 The terminal decodes M first subsequences and obtains M second subsequences.
  • the decoding process may include at least one of derate matching, channel decoding, deinterleaving, and CRC checking.
  • the channel decoding may be polarization decoding.
  • S409 The terminal determines whether each second subsequence among the M second subsequences passes verification; if each second subsequence among the M second subsequences passes verification, execute S410; if the M second subsequences pass verification, If at least one second subsequence in the sequence fails the verification, S411 is executed.
  • the terminal when the terminal performs a CRC check on each second subsequence, it can determine whether the second subsequence has passed the check. If the terminal successfully checks the second subsequence, it means that the second subsequence has passed the CRC check. The second subsequence is decoded successfully; if the terminal fails to verify any second subsequence among the M second subsequences, the terminal can stop corresponding to the unverified second subsequence among the M second subsequences. Decoding processing of the first subsequence.
  • the terminal After the terminal passes the verification of any second subsequence, it deletes the CRC field in the second subsequence.
  • both the second subsequence with the CRC field and the second subsequence without the CRC field are simply called the second subsequence.
  • S410 The terminal generates DCI according to M second subsequences.
  • the terminal When the terminal successfully verifies all M second subsequences, the terminal can perform cascade operations on the M second subsequences according to the order in which the modulation symbols corresponding to the M second subsequences are mapped to M*N CCEs. Generate DCI.
  • Figure 6 is a schematic diagram of the mapping relationship between the first subsequence, the second subsequence and the CCE provided by the embodiment of the present application.
  • Figure 6 shows an example where the number of segments M is 2 and the CCE aggregation level is 4.
  • the two first subsequences are CB * 0 and CB * 1
  • the two second subsequences are CB0 and CB1
  • the four CCEs are CCE0 ⁇ CCE3.
  • the modulation symbols corresponding to CB * 0 are mapped on CCE0 and CCE1
  • the modulation symbols corresponding to CB * 1 are mapped on CCE2 and CCE3.
  • CB0 is obtained by the terminal decoding CB * 0, and CB1 is the terminal's decoding of CB * 1. Obtained by decoding. Therefore, the modulation symbols corresponding to CB0 are mapped on CCE0 and CCE1, and the modulation symbols corresponding to CB1 are mapped on CCE2 and CCE3.
  • the terminal can perform a cascade operation on the two second subsequences in the order of CB0 and CB1 to generate DCI.
  • the terminal after the terminal performs a cascading operation on the M second subsequences, if there are padding fields in the M second subsequences after the cascading operation, the terminal deletes the padding fields and generates DCI.
  • S411 The terminal stops decoding the first subsequence corresponding to the unchecked second subsequence among the M second subsequences; or the terminal stops decoding the first subsequence according to at least one second subsequence that has passed the verification among the M second subsequences.
  • the sequence determines the control information.
  • the terminal when the terminal fails to verify any second subsequence among the M second subsequences, the terminal may stop verifying the unverified second subsequences among the M second subsequences.
  • the decoding process of the first subsequence corresponding to the subsequence ends.
  • the terminal when the terminal fails to verify the first second subsequence among the M second subsequences, it can determine that the M second subsequences are not sent to it by the base station, and then stop this decoding. process.
  • the terminal may determine the control information based on at least one second subsequence that passes the verification among the M second subsequences.
  • each second subsequence includes a part of the fields of the DCI. Therefore, the terminal can pass the verification based on at least one second subsequence.
  • the subsequences are parsed to obtain control information indicated by at least one second subsequence that passes the verification.
  • the terminal when DCI is used to indicate scheduling information corresponding to multiple carriers, if the terminal passes at least one second subsequence check among the M second subsequences, and analyzes multiple carriers based on at least one second subsequence If the scheduling information corresponding to at least one carrier is obtained, the terminal can receive and process the data channel transmitted on the at least one carrier according to the parsed scheduling information corresponding to at least one carrier.
  • the terminal may determine the control information based on the second subsequence that does not pass the verification in the order of the M second subsequences.
  • Add a padding field at the position, or the terminal can retain the second subsequence that has not passed the verification, so that when the terminal parses and obtains the control information, it can still parse according to the position of each field in the DCI and extract the available fields to obtain the control information. Without having to reposition individual fields. Among them, each field in DCI can be used to indicate different information.
  • different fields can indicate scheduling information corresponding to different carriers; the location of each field in DCI can be configured by the base station to the terminal or predefined by the protocol; the available fields refer to the information from the base station to the terminal.
  • the terminal can re-determine the position of each field in the DCI based on the identifier corresponding to at least one second sub-sequence that has passed the verification, and then parse and extract the at least one second sub-sequence based on the re-determined position of each field in the DCI.
  • Available fields to obtain control information.
  • the base station and the terminal include corresponding hardware structures and/or software modules that perform each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driving the hardware depends on the specific application scenarios and design constraints of the technical solution.
  • Figures 7 and 8 are schematic structural diagrams of possible communication devices provided by embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
  • the communication device may be one of the terminals 120a-120j as shown in Figure 1, or it may be the base station 110a or 110b as shown in Figure 1, or it may be applied to the terminal or the base station. Modules (such as chips).
  • the communication device 700 includes a processing unit 710 and a transceiver unit 720 .
  • the communication device 700 is used to implement the functions of the base station or terminal in the method embodiment shown in Figure 4.
  • the transceiver unit 720 is used to receive the first sequence from the radio access network device, and the first sequence is carried on M*N On CCE.
  • M*N is the CCE aggregation level
  • M is an integer greater than 1
  • N is a positive integer.
  • the processing unit 710 is used to demodulate the first sequence to generate a second sequence, and then process the second sequence to obtain M first subsequences.
  • the terminal decodes the M first subsequences and obtains M second subsequences. If the terminal passes the verification of each of the M second subsequences, the terminal generates DCI based on the M second subsequences.
  • the processing unit 710 is specifically configured to map the second subsequences according to the mapping relationship between the M first subsequences in the second sequence and the M*N CCEs.
  • the sequence is processed to obtain the M first subsequences; wherein the modulation symbols corresponding to each of the M first subsequences are mapped to N CCEs among the M*N CCEs. , and the modulation symbols corresponding to different first subsequences are mapped to N different CCEs.
  • the processing unit 710 is specifically configured to perform processing on the M second subsequences according to the order in which the modulation symbols corresponding to the M second subsequences are mapped to the M*N CCEs. Cascading operations, generating the DCI.
  • the processing unit 710 is also configured to delete the padding field after performing a cascade operation on the M second subsequences.
  • the processing unit 710 is further configured to determine the number of segments M of the second sequence according to the CCE aggregation level, the length of the DCI and the first correspondence relationship, wherein: The first correspondence is the correspondence between the length of the DCI, the CCE aggregation level and the number of segments M; or the terminal determines the number of segments M of the second sequence according to the CCE aggregation level and the second correspondence, where, The second correspondence is the correspondence between the CCE aggregation level and the number of segments M.
  • the transceiver unit 720 is also configured to receive a first RRC signaling from a radio access network device, where the first RRC signaling indicates the first corresponding relationship or the second Correspondence.
  • the transceiver unit 720 is also configured to receive second RRC signaling from the radio access network device; the second RRC signaling indicates the number of segments M.
  • the processing unit 710 is further configured to: if any second subsequence among the M second subsequences fails to pass the verification, stop processing the M second subsequences. Decoding processing of the first subsequence corresponding to the unchecked second subsequence in the sequence; or if the verification of any second subsequence among the M second subsequences fails, then according to the M At least one second subsequence that passes the verification among the second subsequences determines the control information.
  • the processing unit 710 is specifically configured to, after demodulating the first sequence, descramble the demodulated first sequence to generate the second sequence.
  • the processing unit 710 is used to perform segmentation processing on the downlink control information DCI according to the segment number M of the DCI to obtain the Mth For two subsequences, M is an integer greater than 1.
  • M is an integer greater than 1.
  • Each of the M second subsequences is encoded separately to obtain M first subsequences, and then a cascade operation is performed on the M first subsequences to obtain a second sequence, The second sequence is then modulated to generate a first sequence.
  • the transceiver unit 720 is configured to send the first sequence to the terminal.
  • the first sequence is carried on M*N control channel units CCE, where M*N is the CCE aggregation level, and N is a positive integer.
  • the processing unit 710 is specifically configured to determine the length of each of the M second subsequences according to the length of the DCI and the number of segments of the DCI. .
  • the downlink control information is segmented according to the length of each second subsequence to obtain the M second subsequences.
  • the processing unit 710 is also configured to add a padding field in the DCI so that the lengths of the M second subsequences are the same.
  • the processing unit 710 is further configured to determine the number of segments M of the DCI according to the CCE aggregation level, the length of the DCI and a first correspondence relationship, wherein the first The corresponding relationship is the corresponding relationship between the length of the DCI, the CCE aggregation level and the number of segments M; or the number of segments M of the DCI is determined according to the CCE aggregation level and the second correspondence, wherein the second correspondence The relationship is the correspondence between the CCE aggregation level and the number of segments M.
  • the transceiver unit 720 is further configured to send first RRC signaling to the terminal, where the first RRC signaling indicates the first corresponding relationship or the second corresponding relationship.
  • the transceiver unit 720 is also configured to send second RRC signaling to the terminal; the second RRC signaling indicates the number of segments M.
  • the processing unit 710 is also configured to modulate the second sequence before modulating the second sequence.
  • the second sequence is scrambled.
  • processing unit 710 and transceiver unit 720 please refer to the relevant description in the method embodiment shown in FIG. 4 .
  • the communication device 800 includes a processor 810 and an interface circuit 820 .
  • the processor 810 and the interface circuit 820 are coupled to each other.
  • the interface circuit 820 may be a transceiver or an input-output interface.
  • the communication device 800 may also include a memory 830 for storing instructions executed by the processor 810 or input data required for the processor 810 to run the instructions or data generated after the processor 810 executes the instructions.
  • the processor 810 is used to implement the functions of the above-mentioned processing unit 710
  • the interface circuit 820 is used to implement the functions of the above-mentioned transceiver unit 720 .
  • the terminal chip implements the functions of the terminal in the above method embodiment.
  • the terminal chip receives information from other modules in the terminal (such as radio frequency modules or antennas), and the information is sent to the terminal by the base station; or, the terminal chip sends information to other modules in the terminal (such as radio frequency modules or antennas), and the terminal chip sends information to other modules in the terminal (such as radio frequency modules or antennas).
  • the information is sent by the terminal to the base station.
  • the base station module implements the functions of the base station in the above method embodiment.
  • the base station module receives information from other modules in the base station (such as radio frequency modules or antennas), and the information is sent by the terminal to the base station; or, the base station module sends information to other modules in the base station (such as radio frequency modules or antennas), and the base station module The information is sent by the base station to the terminal.
  • the base station module here can be the baseband chip of the base station, or it can be a DU or other module.
  • the DU here can be a DU under the open radio access network (O-RAN) architecture.
  • OF-RAN open radio access network
  • the processor in the embodiment of the present application can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), or application specific integrated circuit. (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor.
  • Software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory In memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and storage media may be located in an ASIC. Additionally, the ASIC can be located in the base station or terminal.
  • the processor and storage medium may also exist as discrete components in the base station or terminal.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment, or other programmable device.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another.
  • the computer program or instructions may be transmitted from a website, computer, server or number
  • the data center transmits data to another website, computer, server or data center via wired or wireless means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media.
  • the available media may be magnetic media, such as floppy disks, hard disks, and tapes; optical media, such as digital video optical disks; or semiconductor media, such as solid-state hard drives.
  • the computer-readable storage medium may be volatile or nonvolatile storage media, or may include both volatile and nonvolatile types of storage media.

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Abstract

一种控制信息传输方法和装置，该方法中，无线接入网设备对DCI进行分段处理，得到M个第二子序列；对M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列；对M个第一子序列进行级联操作，得到第二序列；对第二序列进行调制生成第一序列；将第一序列承载在M*N个CCE上。相较传统DCI传输方案，上述方案中DCI可指示的信息容量有较大程度的提升，为与DCI相关的通信功能的扩展提供可能。

Description

一种控制信息传输方法和装置
相关申请的交叉引用
本申请要求在2022年04月28日提交中华人民共和国知识产权局、申请号为202210471496.5、发明名称为“一种控制信息传输方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种控制信息传输方法和装置。
背景技术
在第五代(5th generation，5G)移动通信系统中，无线接入网设备向终端进行的下行传输过程中，无线接入网设备向终端发送的信息称为下行信息，下行信息包括下行控制信息和下行数据信息。下行控制信道用于承载下行控制信息(downlink control information，DCI)，如下行控制信道可以是物理下行控制信道(physical downlink control channel，PDCCH)；下行数据信道用于承载下行数据信息，如下行数据信道可以是物理下行共享信道(physical downlink shared channel,PDSCH)。PDCCH中承载的DCI用于指示PDSCH的配置信息(例如，时域/频域位置、调制信息、编码信息等)。
发明内容
由于目前编码器的编码限制，DCI的长度需要小于设定长度。但随着通信标准的演进，新增通信功能的同时需要在DCI中增加对应的控制字段，DCI的长度将会增加，但目前并没有一种针对超出设定长度的DCI的传输方案。基于该问题，本申请提供了一种控制信息传输方法和装置，用以提供一种灵活的DCI传输方案。
第一方面，提供一种控制信息传输方法。该方法可以由终端执行，或者由终端的芯片执行。该方法中，终端接收来自无线接入网设备的第一序列，第一序列承载在M*N个CCE上。其中，M*N为CCE聚合等级，M为大于1的整数、N为正整数。终端对第一序列进行解调生成第二序列，再对第二序列进行处理得到M个第一子序列。终端对M个第一子序列进行译码处理，得到M个第二子序列。若终端对M个第二子序列中的每个第二子序列分别校验通过，则终端根据M个第二子序列生成DCI。
基于上述方案，终端可以从M*N个CCE上获取第一序列，对第一序列解调得到第二序列后，可以将第二序列处理为M个第一子序列，终端对M个第一子序列译码处理得到M个第二子序列，每个第二子序列可以包含部分控制信息，则终端根据M个第二子序列生成的DCI可指示的信息容量，相较传统DCI传输方案中DCI可指示的信息容量有较大程度的提升，为与DCI相关的通信功能的扩展提供可能。
在一种可能的实现方式中，终端根据所述第二序列中的M个第一子序列与所述M*N个CCE之间的映射关系，对所述第二序列进行处理得到所述M个第一子序列；其中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N 个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
基于上述方案，M个第一子序列中每个第一子序列对应的调制符号映射到N个CCE上，便于终端复用现有的硬件，简化实现。
在一种可能的实现方式中，终端根据M个第二子序列对应的调制符号映射到所述M*N个CCE的顺序，对所述M个第二子序列进行级联操作，生成所述DCI。
在一种可能的实现方式中，终端对M个第二子序列进行级联操作之后，删除填充字段。
在一种可能的实现方式中，终端根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述第二序列的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者终端根据所述CCE聚合等级和第二对应关系确定所述第二序列的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
在一种可能的实现方式中，第一对应关系或第二对应关系是协议预定义的，或者终端接收来自无线接入网设备的第一无线资源控制RRC信令；所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
在一种可能的实现方式中，终端接收来自所述无线接入网设备的第二RRC信令；所述第二RRC信令指示所述分段数量M。
在一种可能的实现方式中，若对所述M个第二子序列中的任一个第二子序列校验不通过，则终端停止对所述M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理；或者若对所述M个第二子序列中的任一个第二子序列校验不通过，则终端根据所述M个第二子序列中校验通过的至少一个第二子序列确定控制信息。
基于上述设计，终端在对M个第二子序列中任一个子序列校验不通过时，可以停止本次译码过程。或者终端可以根据M个第二子序列中校验通过的至少一个第二子序列确定控制信息，以充分利用校验通过的至少一个第二子序列中的可用字段，提升通信效率。
在一种可能的实现方式中，所述译码处理可以包括：解速率匹配、信道译码、解交织处理、循环冗余校验中的至少一项。
在一种可能的实现方式中，终端对所述第一序列进行解调之后，对解调后的第一序列进行解扰处理，生成所述第二序列。
第二方面，提供一种控制信息传输方法。该方法可以由无线接入网设备执行，或者由无线接入网设备的芯片执行。该方法中，无线接入网设备根据下行控制信息DCI的分段数量M对所述DCI进行分段处理，得到M个第二子序列，M为大于1的整数。无线接入网设备分别对所述M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列，再对所述M个第一子序列进行级联操作，得到第二序列，然后，无线接入网设备对所述第二序列进行调制生成第一序列。无线接入网设备向终端发送所述第一序列，所述第一序列承载在M*N个控制信道单元CCE上，M*N为CCE聚合等级，N为正整数。该方法为与第一方面相对应的无线接入网侧的方法，因此也能实现第一方面所能达到的有益效果。
在一种可能的实现方式中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
在一种可能的实现方式中，无线接入网设备根据所述DCI的长度和所述DCI的分段数 量M，确定所述M个第二子序列中每个第二子序列的长度。无线接入网设备根据每个第二子序列的长度对所述下行控制信息进行分段处理，得到所述M个第二子序列。
在一种可能的实现方式中，所述M个第二子序列的长度相同；或者所述M个第二子序列中前M-1个第二子序列的长度相同；或者所述M个第二子序列中后M-1个第二子序列的，长度相同。
在一种可能的实现方式中，无线接入网设备在所述DCI中添加填充字段，以使所述M个第二子序列的长度相同。
在一种可能的实现方式中，无线接入网设备根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述DCI的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者无线接入网设备根据所述CCE聚合等级和第二对应关系确定所述DCI的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
在一种可能的实现方式中，所述第一对应关系或所述第二对应关系为协议预定义的；或者无线接入网设备向所述终端发送第一无线资源控制RRC信令，所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
在一种可能的实现方式中，无线接入网设备向所述终端发送第二RRC信令；所述第二RRC信令指示所述分段数量M。
在一种可能的实现方式中，所述编码处理可以包括：增加循环冗余校验字段、交织处理、信道编码、速率匹配中的至少一项。
在一种可能的实现方式中，无线接入网设备对所述第二序列调制之前，对所述第二序列进行加扰处理。
第三方面，提供一种通信装置，该通信装置可以为终端或终端中的芯片，该通信装置包括收发单元和处理单元。
收发单元，用于接收来自无线接入网设备的第一序列，第一序列承载在M*N个CCE上。其中，M*N为CCE聚合等级，M为大于1的整数、N为正整数。
处理单元，用于对第一序列进行解调生成第二序列，再对第二序列进行处理得到M个第一子序列。终端对M个第一子序列进行译码处理，得到M个第二子序列。若终端对M个第二子序列中的每个第二子序列分别校验通过，则终端根据M个第二子序列生成DCI。
在一种设计中，处理单元，具体用于根据所述第二序列中的M个第一子序列与所述M*N个CCE之间的映射关系，对所述第二序列进行处理得到所述M个第一子序列；其中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
其中，对方案更详细的描述可以参见上述第一方面中的相关描述。
第四方面，提供一种通信装置，该装置可以为无线接入网设备或无线接入网设备中的模块，该通信装置包括收发单元和处理单元。
所述处理单元，用于根据下行控制信息DCI的分段数量M对所述DCI进行分段处理，得到M个第二子序列，M为大于1的整数；分别对所述M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列；对所述M个第一子序列进行级联操作，得到 第二序列；对所述第二序列进行调制生成第一序列；
所述收发单元，用于向终端发送所述第一序列，所述第一序列承载在M*N个控制信道单元CCE上，M*N为CCE聚合等级，N为正整数。
在一种设计中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
其中，对方案更详细的描述可以参见上述第二方面中的相关描述。
第五方面，本申请提供一种通信装置，包括处理器，所述处理器和存储器耦合，所述存储器用于存储计算机程序或指令，所述处理器用于执行所述计算机程序或指令，以执行上述第一方面或第二方面的各实现方法。该存储器可以位于该装置之内，也可以位于该装置之外。该处理器的数量为一个或多个。
第六方面，本申请提供一种通信装置，包括：处理器和接口电路，所述接口电路用于与其它装置通信，所述处理器用于上述第一方面或第二方面的各实现方法。
第七方面，本申请提供一种通信系统，包括：用于执行上述第一方面各实现方法的终端，和用于执行上述第二方面各实现方法的无线接入网设备。
第八方面，本申请还提供一种芯片系统，包括：处理器，用于执行上述第一方面或第二方面的各实现方法。
第九方面，本申请还提供一种计算机程序产品，该计算机产品包括计算机程序，当计算机程序运行时，使得上述第一方面或第二方面的各实现方法被执行。
第十方面，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机程序或指令，当所述指令在计算机上运行时，实现上述第一方面或第二方面的各实现方法。
附图说明
图1为本申请的实施例应用的通信系统的架构示意图；
图2为本申请实施例提供的一种PDCCH占用的资源的示意图；
图3为本申请实施例提供的一种DCI处理流程的示意图；
图4为本申请实施例提供的一种控制信息传输方法的示例性流程图；
图5为本申请实施例提供的一种第一子序列与CCE的映射关系示例图；
图6为本申请实施例提供的一种第一子序列、第二子序列和CCE的映射关系示意图；
图7为本申请实施例提供的一种通信装置的结构示意图之一；
图8为本申请实施例提供的一种通信装置的结构示意图之一。
具体实施方式
图1是本申请的实施例应用的通信系统1000的架构示意图。如图1所示，该通信系统包括无线接入网100和核心网200，可选的，通信系统1000还可以包括互联网300。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相 连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。
无线接入网设备是终端通过无线方式接入到通信系统中的接入设备。无线接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信系统中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。这里的CU完成基站的无线资源控制协议和分组数据汇聚层协议(packet data convergence protocol，PDCP)的功能，还可以完成业务数据适配协议(service data adaptation protocol，SDAP)的功能；DU完成基站的无线链路控制层和介质访问控制(medium access control，MAC)层的功能，还可以完成部分物理层或全部物理层的功能，有关上述各个协议层的具体描述，可以参考第三代合作伙伴计划(3rd generation partnership project，3GPP)的相关技术规范。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。为了便于描述，下文以基站作为无线接入网设备的例子进行描述。
终端是具有无线收发功能的设备，可以向基站发送信号，或接收来自基站的信号。终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。
基站和终端的角色可以是相对的，例如，图1中的直升机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，终端120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也 可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本申请的实施例中，基站的功能也可以由基站中的模块(如芯片)来执行，也可以由包含有基站功能的控制子系统来执行。这里的包含有基站功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端的功能也可以由终端中的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。
在本申请中，基站向终端发送下行信号或下行信息，下行信息承载在下行信道上；终端向基站发送上行信号或上行信息，上行信息承载在上行信道上。其中，下行信息可以包括下行控制信息和下行数据信息，下行控制信道用于承载下行控制信息，如下行控制信道可以为物理下行控制信道(physical downlink control channel，PDCCH)；下行数据信道用于承载下行数据信息，如下行数据信道可以为物理下行共享信道(physical downlink shared channel,PDSCH)。终端为了与基站进行通信，需要与基站控制的小区建立无线连接。与终端建立了无线连接的小区称为该终端的服务小区。当终端与该服务小区进行通信的时候，还会受到来自邻区的信号的干扰。
可以理解的是，本申请的实施例中，PDSCH、PDCCH和PUSCH只是分别作为下行数据信道、下行控制信道和上行数据信道一种举例，在不同的系统和不同的场景中，数据信道和控制信道可能有不同的名称，本申请的实施例对此并不做限定。
为了便于理解本申请实施例提供的技术方案，以下对本申请实施例涉及的技术术语进行解释和说明。
(1)小区
每个基站的覆盖范围可以被划分为一个或多个小区。在目前的NR标准中，一个小区可以被配置一个下行载波，可选地还可以被配置至少一个上行载波。针对终端而言，为其提供服务的小区称为服务小区。本申请中所涉及的小区也可以是服务小区。
(2)载波
配置给一个小区的频域资源可以称为载波。例如，配置给一个小区的下行频域资源可以称为下行载波，配置给一个小区的连续的上行频域资源可以称为上行载波。
(3)控制资源集合
下行传输过程中涉及的传输资源可以分为传输下行控制信息可用的控制区域以及传输下行数据信息可用的数据区域。控制区域包含下行控制信道可占用的时域资源和频域资源，数据区域包括下行数据信道可占用的时域资源和频域资源。作为一种实现方式，可在控制区域中确定PDCCH存在的位置，在数据区域中确定PDSCH存在的位置。
一个控制资源集合(control-resource set,CORESET)是控制区域内的一块时频资源。其中，在时域上，1个CORESET可以被配置为1个或连续几个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号；在频域上，1个CORESET可以是一组连续或非连续的频域资源。作为一种实现方式，CORESET用于指示PDCCH可能存在的时隙内的时域、频域范围。CORESET的相关参数可通过无线资源控制(radio resource control，RRC)信令配置。
(4)聚合等级(aggregation level，AL)
用于承载1个PDCCH的控制信道单元(control channel element，CCE)数量称为CCE聚合等级，例如CCE聚合等级可以为1、2、4、8、16等。由于不同的PDCCH可以使用不同的CCE聚合等级，也就是包含不同数量的RE，因此，聚合等级也说明了PDCCH信道占用的物理资源数量。在传输相同控制信息的情况下，PDCCH对应的CCE个数越多，传输性能就越好。
关于CCE再做进一步的解释。1个CCE由6个资源组(resource element group，REG)构成，1个REG由12个资源单位(resource element，RE)构成。1个REG对应1个OFDM符号上的1个资源块RB，即1个REG包括时域上一个符号和频域上一个RB对应的资源。PDCCH可能占用的资源以及PDCCH实际占用的资源都可用CCE描述。
例如，图2为本申请实施例提供的一种PDCCH占用的资源的示意图。图2中示出了聚合等级为2时PDCCH、CCE和REG的关系：PDCCH承载在2个CCE上，每个CCE包含6个REG。
基站可以配置至少一个聚合等级来承载PDCCH，以支持不同下行控制信息(downlink control information，DCI)格式在不同信道带宽和信道环境下的高效传输。DCI格式一定的前提下，聚合等级越高，PDCCH上携带的DCI的码率越低，编码鲁棒性越好，适合在无线信道环境差的条件下的DCI的传输；如果终端的无线信道环境很好，则可以通过采用高码率和低聚合等级以节约传输资源。
(5)PDCCH候选(candidate)
标准协议规定或者基站配置每一个聚合等级下的PDCCH候选的个数，根据CCE聚合等级和每一个聚合等级下的PDCCH候选的个数可以得到每个PDCCH候选的时频资源位置，也就是PDCCH可能出现的时频资源位置。
以UE特定搜索空间为例，如CCE聚合等级为1时，在UE特定搜索空间的起始位置读取1个CCE，这1个CCE就是一个PDCCH candidate，UE将读取的数据进行解速率匹配、译码，然后再将得到数据使用无线网络临时标识(radio network temporary identifier，RNTI)解扰和CRC校验，如果CRC校验成功，UE才知道这个PDCCH是发送给自己的，进一步可以解出DCI的内容。
(6)DCI
PDCCH上传输(承载)的内容叫做DCI。DCI，可以包括上下行资源调度信息、功率控制信息、时隙格式信息等。终端在正确获取基站发送的DCI后，才可以正确译码基站发送的数据或者向基站发送上行数据。
图3为本申请实施例提供的一种DCI处理流程的示意图。其中，图3中的(a)示出了本申请实施例提供的一种基站侧的DCI处理流程。参考图3中的(a)，基站可以对DCI增加CRC字段，并且可以使用RNTI对CRC字段中的后16位进行加扰(也称为加掩码处理)，其中，加扰使用的RNTI可以根据DCI的用途确定，或由基站进行配置。基站对增加了CRC字段的DCI进行交织(Interleaving)处理、信道编码以及速率匹配(rate matching，RM)，其中信道编码可以为极化编码(polar coding)，RM可以包括子块交织(sub-block interleaving)处理、比特选择(bit selection)以及交织处理。最后，基站再对速率匹配后的信息进行加扰处理和调制处理得到调制符号，将调制符号映射到CCE后，基站可以将调制信号发送给终端，从而实现DCI的传输。
图3中的(b)示出了为本申请实施例提供的一种终端侧的DCI处理流程。参考图3 中的(b)，终端在从CCE上解映射得到调制信号后，对调制信号进行解调和解扰处理。终端对解扰处理后得到的信息进行解速率匹配(rate de-matching)、信道译码、解交织处理以及解掩码处理；其中，信道译码可以为极化译码。终端对解掩码处理得到的信息进行CRC校验通过后，删除解掩码处理得到的信息中的CRC字段，得到DCI。
(7)多个，是指两个或两个以上；至少一个，是指一个或多个。
另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
通过前述介绍可知，DCI可以用于调度下行数据传输，但由于目前编码器的编码限制，DCI的长度需要小于设定长度。如现有协议中定义DCI的最大长度为164bits，其中还包含24bits的CRC字段。而随着通信标准的演进，新增通信功能的同时可能需要在DCI中增加对应的控制字段，DCI的长度将会增加。例如本申请实施例提供的一种通信场景中，一个载波上的DCI可以同时调度多个载波的下行传输，该技术可以称为single-DCI技术。在该通信场景中，一个DCI需要包含多个小区的控制信息，因此DCI的长度会增加。但是目前并没有一种针对超出设定长度的DCI的传输方案。
基于上述问题，本申请提供一种控制信息传输方法，用以提供一种灵活的DCI传输方案。图4为本申请实施例提供的一种控制信息传输方法的示例性流程图。该方法可以由图1所示通信系统中的终端和无线接入网设备执行，为便于描述，以下实施例中以基站作为无线接网设备为例进行介绍。参考图4，该方法包括以下步骤：
S401：基站根据DCI的分段数量M对DCI进行分段处理，得到M个第二子序列。
本申请实施例中，基站可以对DCI进行分段处理，以将DCI分为M个第二子序列。其中，M为基站对DCI进行分段处理的分段数量，M为大于1的整数。基站对DCI进行分段处理得到的M个第二子序列中的每个子序列包括DCI中的一部分数据。这里的第二子序列也可以称为编码块(code block，CB)。
基站在对DCI进行分段处理时，可以先确定DCI的分段数量M。DCI的分段数量M可以与CCE聚合等级和DCI的长度相关，或者DCI的分段数量M可以与CCE聚合等级相关。实施中，基站可以根据以下任一方式确定DCI的分段数量M：
方式一：基站根据CCE聚合等级、DCI的长度和第一对应关系确定DCI的分段数量M。
其中，第一对应关系为DCI的长度、CCE聚合等级和分段数量之间的对应关系。表1为本申请实施例提供的一种第一对应关系的示例。
表1第一对应关系示例
其中，表1中NS表示不支持。
参考表1，基站可以根据DCI的长度、CCE聚合等级以及第一对应关系确定DCI的分 段数量M。例如，当AL＝4，DCI长度为550时，基站可以根据表1所示的第一对应关系确定DCI的分段数量M＝4；又例如，当AL＝8，DCI长度为260时，基站可以根据表1所示的第一对应关系确定DCI的分段数量M＝2。
通过该方式，基站在根据确定出的DCI的分段数量M对DCI进行分段处理后，可以使得每个第二子序列的长度小于或等于当前协议中定义的DCI最大长度，从而基站在对分段后的M个第二子序列分别进行编码处理等操作时，可以尽量复用现有DCI处理流程(如图3中的(a)所示)，使得本申请实施例提供的控制信息传输方法能在复用现有的硬件的前提下，通过修改软件即可实现，从而不增加编码处理的复杂度，保证编码性能。
方式二：基站根据CCE聚合等级和第二对应关系确定DCI的分段数量M。
其中，第二对应关系为CCE聚合等级和分段数量之间的关系。表2为本申请实施例提供的一种第二对应关系的示例。
表2第二对应关系示例
参考表2，基站可以根据CCE聚合等级以及第二对应关系确定DCI的分段数量M。例如，当AL＝4时，基站可以根据表2所示的第二对应关系确定DCI的分段数量M＝4；又例如，当AL＝8，基站可以根据表2所示的第二对应关系确定DCI的分段数量M＝8。
本申请实施例中，基站可以向终端发送RRC信令，该RRC信令指示第一对应关系或第二对应关系；或者第一对应关系或第二对应关系可以为协议预定义的。
在本申请另一种实施方式中，基站在确定出DCI的分段数量M后，还可以向终端发送RRC信令，该RRC信令中指示分段数量M。
需要说明的是，表1所示的第一对应关系和表2所示的第二对应关系仅为本申请实施例提供的一种示例而非限定，第一对应关系或第二对应关系中M的取值可以为至少一个候选数值中的一个数值。在确定M的候选数值时，可以根据当前协议支持的CCE聚合等级确定M的候选数值。具体来说，以目前协议支持的CCE聚合等级{1,2,4,8,16}为例，我们称{1,2,4,8,16}为集合A。若当前CCE聚合等级为AL，则AL/M的值可以为集合A的一个子集，该子集包括集合A中当前CCE聚合等级的数值以及小于当前CCE聚合等级的数值。可以理解的是，AL/M的值即为本申请实施例中的N，N为每个第二子序列对应的调制符号映射的CCE数量(具体可以参见S405，此处暂不详述)。通过该设计，可以使得N为当前协议支持的CCE聚合等级中的一个数值，从而每个第二子序列对应的调制符号映射到N个CCE的处理方式以及装置，可以复用现有DCI对应的调制信号映射到CCE的方式及装置，使得本申请提供的控制信息传输方式更易实施。
可以理解的是，M和N均为集合A的一个子集，该子集包括集合A中当前CCE聚合等级的数值以及小于当前CCE聚合等级的数值。例如，当前CCE聚合等级为4时，N的候选集合可以为{1,2,4}，M的候选集合可以为{1,2,4}；又例如，当前CCE聚合等级为16时，N的候选集合可以为{1,2,4,8,16}，M的候选集合可以为{1,2,4,8,16}。可以理解的是，由于M为基站对DCI进行分段处理的分段数量，当M＝1时，表示基站无需对DCI进行分段处理，因此M的候选集合中可以不包括数值1。
本申请实施例中，基站在确定出DCI的分段数量M后，可以根据DCI的长度和DCI的分段数量M，确定M个第二子序列中每个第二子序列的长度。基站可以根据每个第二子序列的长度对DCI进行分段处理，得到M个第二子序列。
本申请实施例中M个第二子序列的长度可以相同；或者M个第二子序列中前M-1个第二子序列的长度相同；或者M个第二子序列中后M-1个第二子序列的长度相同。下面针对不同情形中基站进行分段处理的方法进行进一步介绍。
1、M个第二子序列的长度相同。
当M个第二子序列的长度相同时，每个第二子序列的长度与DCI的长度满足以下公式：
其中，T1为每个第二子序列的长度，S为DCI的长度，为向上取整运算。
需要说明的是，若基于分段数量M对DCI进行分段处理时，无法将DCI均分为M个长度相同的第二子序列，则基站可以在DCI中添加填充字段，再对填充字段后的DCI进行分段处理。如基站可以在DCI的比特序列的高位补0或补1，或在DCI的比特序列的低位补0或补1，以使添加填充字段后的DCI可以均分为M个长度相同的第二子序列。例如，填充字段后的DCI的长度可以满足以下公式：
其中，S‘为填充字段后的DCI长度。
举例来说，假设DCI长度为990，分段数量M为8。基站可以确定每个第二子序列的长度为124，基站可以在DCI的比特序列的高位添加填充字段，该填充字段包括两个值为0的比特。基站可以将添加填充字段后的DCI均分为8个第二子序列，每个第二子序列的长度均为124。
2、M个第二子序列中前M-1个第二子序列的长度相同。
当M个第二子序列中前M-1个第二子序列的长度相同时，基站可以根据DCI的长度和分段数量M确定M个子序列中前M-1个第二子序列的长度。例如，前M-1个第二子序列的长度满足以下公式：
其中，T2为前M-1个第二子序列的长度，S为DCI的长度，为向上取整运算。
基站还可以确定M个子序列中第M个第二子序列的长度。例如，第M个第二子序列的长度满足以下公式：
其中，T3为第M个第二子序列的长度。
基站可以根据确定出的M个第二子序列中前M-1个第二子序列的长度以及第M个第二子序列的长度，对DCI进行分段处理，得到M个第二子序列。
举例来说，假设DCI长度为990，分段数量M为8。基站可以确定前7个第二子序列的长度为124，第8个第二子序列的长度为122。
3、M个第二子序列中后M-1个第二子序列的长度相同。
当M个第二子序列中后M-1个第二子序列的长度相同时，基站可以根据DCI的长度和分段数量M确定M个子序列中后M-1个第二子序列的长度。例如，后M-1个第二子序列的长度满足以下公式：
其中，T4为后M-1个第二子序列的长度，S为DCI的长度，为向上取整运算。
基站还可以确定M个子序列中第1个第二子序列的长度。例如，第1个第二子序列的长度满足以下公式：
其中，T5为第M个第二子序列的长度。
基站可以根据确定出的M个第二子序列中第一个第二子序列的长度和后M-1个第二子序列的长度，对DCI进行分段处理，得到M个第二子序列。
举例来说，假设DCI长度为990，分段数量M为8。基站可以确定第1个第二子序列的长度为122，后7个第二子序列的长度为124。
S402：基站分别对M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列。
基站对每个第二子序列执行的编码处理可以包括：增加CRC字段、交织处理、信道编码、速率匹配。其中，信道编码可以为极化编码，速率匹配可以包括块交织处理、比特选择以及比特交织处理。
基站还可以在对每个第二子序列增加CRC字段时，使用RNTI对CRC字段中的后16位进行加扰。
需要说明的是，通过S401中基站对DCI进行分段处理的介绍，基站对DCI分段处理后得到的M个第二子序列的长度可以相同，则基站可以基于相同的编码参数分别对M个第二子序列进行信道编码，提升编码效率。当基站对DCI分段处理后，前M-1个第二子序列的长度相同时，第M个第二子序列编码之后的码率会小于前M-1个第二子序列，从而能够提高第M个第二子序列的译码成功率。当后M-1个第二子序列的长度相同时，第1个第二子序列编码之后的码率会小于后M-1个第二子序列，从而能够提高第1个第二子序列的译码成功率。
S403：基站对M个第一子序列进行级联操作，得到第二序列。
基站可以根据每个第一子序列对应的第二子序列的顺序，对M个第一子序列进行级联操作，得到第二序列。
S404：基站可以对第二序列进行调制，生成第一序列。
基站在对第二序列进行调制之前，还可以对第二序列进行加扰处理。
S405：基站向终端发送第一序列。
本申请实施例中，基站向终端发送的第一序列承载在M*N个CCE上，M*N为CCE聚合等级，N为正整数。也就是说，本申请实施例中PDCCH承载在M*N个CCE上，基站可以通过M*N个CCE向终端发送第一序列。
通过S403-S404可知，第一序列是基站对第二序列进行调制得到的，而第二序列是基站对M个第一子序列进行级联操作得到的，则第一序列中包括M个第一子序列对应的调制符号。其中，任一个第一子序列对应的调制符号为基站对第二序列中该第一子序列对应 的部分进行调制得到的。
第一序列中的每个第一子序列对应的调制符号映射到M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
图5为本申请实施例提供的一种第一子序列与CCE的映射关系示例图。参考图5，假设第一序列中包括4个第一子序列对应的调制符号，4个第一子序列分别为CB*0～CB*3；CCE聚合等级为8，8个CCE分别为CCE0～CCE7。则每个第一子序列对应的调制符号映射到2个CCE上，且不同的第一子序列对应的调制符号映射到2个不同的CCE上。如CB*0对应的调制符号映射到CCE0和CCE1上，CB*1对应的调制符号映射到CCE2和CCE3上，CB*2对应的调制符号映射到CCE4和CCE5上，CB*3对应的调制符号映射到CCE6和CCE7上。
通过以上方式，基站可以将较长的DCI拆分为多段子序列分别进行处理，并将多段子序列对应的调制符号映射到多个CCE上，通过该方案可以增加可支持传输的DCI的最长长度，从而灵活实现DCI的传输，解决现有无法传输超出设定长度的DCI的问题。
S406：终端可以对第一序列进行解调生成第二序列。
终端在对第一序列进行解调之后，还可以对解调后的第一序列进行解扰处理。
S407：终端对第二序列进行处理得到M个第一子序列。
终端可以根据以下任一方式确定第二序列的分段数量M：
方式一、终端根据CCE聚合等级、DCI的长度和第一对应关系确定DCI的分段数量M。
其中，第一对应关系可以为DCI的长度、CCE聚合等级和分段数量之间的对应关系。例如第一对应关系可以如表1所示。
方式二、终端根据CCE聚合等级和第二对应关系确定DCI的分段数量M。
其中，第二对应关系可以为CCE聚合等级和分段数量之间的关系。例如第二对应关系可以如表2所示。
需要说明的是，第一对应关系或第二对应关系可以是协议预定义的；或者终端可以接收基站发送的RRC信令，该RRC信令指示第一对应关系或第二对应关系。终端根据方式一或方式二确定第二序列的分段数量M的方法可以参见S401中基站确定DCI的分段数量M的方法实施，重复之处不再赘述。
方式三、终端接收基站发送的RRC信令，该RRC信令指示分段数量M。
基站向终端发送的RRC信令中可以包括指示分段数量M的字段，则终端在接收到基站发送的RRC信令后，可以根据RRC信令确定分段数量M。
本申请实施例中，终端在确定出第二序列的分段数量M后，可以根据第二序列中的M个第一子序列与M*N个CCE之间的映射关系，对第二序列进行处理得到M个第一子序列。
例如，当M个第一子序列与M*N个CCE之间的映射关系如图5所示时，CB*0对应的调制符号映射到CCE0和CCE1上，则终端可以将第二序列中与CCE0和CCE1上承载的调制符号相对应的部分作为第一个第一子序列；CB*1对应的调制符号映射到CCE2和CCE3上，则终端可以将第二序列中与CCE2和CCE3上承载的调制符号相对应的部分作 为第二个第一子序列；以此类推，终端可以对第二序列进行处理，得到4个第一子序列。
S408：终端对M个第一子序列进行译码处理，得到M个第二子序列。
译码处理可以包括解速率匹配、信道译码、解交织处理、CRC校验中的至少一项。其中，信道译码可以为极化译码。
S409：终端判断M个第二子序列中每个第二子序列是否校验通过；如果M个第二子序列中每个第二子序列均校验通过，执行S410；如果M个第二子序列中至少有一个第二子序列没有校验通过，则执行S411。
一种可选的实施方式中，终端在对每个第二子序列进行CRC校验时，可以判断对第二子序列校验是否通过，若终端对第二子序列校验成功，表示该第二子序列译码成功；若终端对M个第二子序列中的任一个第二子序列校验不通过，则终端可以停止对M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理。
可选地，终端在对任一个第二子序列校验通过后，删除该第二子序列中的CRC字段。在本申请中，带CRC字段和不带CRC字段的第二子序列，都简称为第二子序列。
S410：终端根据M个第二子序列生成DCI。
终端在对M个第二子序列均校验成功时，终端可以根据M个第二子序列对应的调制符号映射到M*N个CCE的顺序，对M个第二子序列进行级联操作，生成DCI。
图6为本申请实施例提供的一种第一子序列、第二子序列和CCE的映射关系示意图。图6以分段数量M为2，CCE聚合等级为4为例示出。参考图6，2个第一子序列为CB*0和CB*1，两个第二子序列为CB0和CB1，4个CCE为CCE0～CCE3。CB*0对应的调制符号映射在CCE0和CCE1上，CB*1对应的调制符号映射在CCE2和CCE3上，且CB0是终端对CB*0进行译码处理得到的，CB1为终端对CB*1进行译码处理得到的。因此，CB0对应的调制符号映射在CCE0和CCE1上，CB1对应的调制符号映射在CCE2和CCE3上。
根据图6中示出的2个第二子序列对应的调制符号映射到4个CCE的顺序，终端可以按照CB0、CB1这样的顺序对2个第二子序列进行级联操作，生成DCI。
一种可选的实施方式中，终端在对M个第二子序列进行级联操作之后，若级联操作后的M个第二子序列中存在填充字段，则终端删除填充字段，生成DCI。
S411：终端停止对M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理；或者终端根据M个第二子序列中校验通过的至少一个第二子序列确定控制信息。
一种可选的实施方式中，当终端在对M个第二子序列中的任一个第二子序列校验不通过时，终端可以停止对M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理，本次译码过程结束。
可选地，终端可以在对M个第二子序列中的第一个第二子序列校验不通过时，确定M个第二子序列并不是基站发送给自身的，则停止本次译码过程。
另一种可选的实施方式中，终端可以根据M个第二子序列中校验通过的至少一个第二子序列确定控制信息。可选地，由于M个第二子序列是基站对DCI进行分段处理得到的，则每个第二子序列中包括DCI的一部分字段，因此终端可以根据校验通过的至少一个第二 子序列进行解析处理，以获取校验通过的至少一个第二子序列指示的控制信息。例如，当DCI用于指示多个载波对应的调度信息时，若终端对M个第二子序列中的至少一个第二子序列校验通过，且根据至少一个第二子序列解析得到多个载波中至少一个载波对应的调度信息，则终端可以根据解析到的至少一个载波对应的调度信息，对该至少一个载波上传输的数据信道进行接收处理。
可选地，终端在根据M个第二子序列中校验通过的至少一个第二子序列确定控制信息时，可以按照M个第二子序列的顺序，在未校验通过的第二子序列的位置处添加填充字段，或者终端可以保留未校验通过的第二子序列，从而终端在解析得到控制信息时，可以依然按照DCI中各个字段的位置进行解析，提取可用字段以获取控制信息，而无需重新确定各个字段的位置。其中，DCI中各个字段可以用于指示不同的信息，如不同字段可以指示不同的载波对应的调度信息；DCI中各个字段的位置可以为基站向终端配置或协议预定义的；可用字段是指从校验通过的第二子序列中解析得到的字段。或者，终端可以根据校验通过的至少一个第二子序列对应的标识重新确定DCI中各个字段的位置，再根据重新确定出的DCI中各个字段的位置对至少一个第二子序列进行解析，提取可用字段以获取控制信息。
可以理解的是，为了实现上述实施例中功能，基站和终端包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
图7和图8为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中终端或基站的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请的实施例中，该通信装置可以是如图1所示的终端120a-120j中的一个，也可以是如图1所示的基站110a或110b，还可以是应用于终端或基站的模块(如芯片)。
如图7所示，通信装置700包括处理单元710和收发单元720。通信装置700用于实现上述图4所示的方法实施例中基站或终端的功能。
当通信装置700用于实现图4所示的方法实施例中终端的功能时，所述收发单元720，用于接收来自无线接入网设备的第一序列，第一序列承载在M*N个CCE上。其中，M*N为CCE聚合等级，M为大于1的整数、N为正整数。所述处理单元710，用于对第一序列进行解调生成第二序列，再对第二序列进行处理得到M个第一子序列。终端对M个第一子序列进行译码处理，得到M个第二子序列。若终端对M个第二子序列中的每个第二子序列分别校验通过，则终端根据M个第二子序列生成DCI。
在一种可选的实现方式中，处理单元710，具体用于根据所述第二序列中的M个第一子序列与所述M*N个CCE之间的映射关系，对所述第二序列进行处理得到所述M个第一子序列；其中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
在一种可选的实现方式中，处理单元710，具体用于根据M个第二子序列对应的调制符号映射到所述M*N个CCE的顺序，对所述M个第二子序列进行级联操作，生成所述 DCI。
在一种可选的实现方式中，处理单元710，还用于对M个第二子序列进行级联操作之后，删除填充字段。
在一种可选的实现方式中，处理单元710，还用于根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述第二序列的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者终端根据所述CCE聚合等级和第二对应关系确定所述第二序列的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
在一种可选的实现方式中，收发单元720，还用于接收来自无线接入网设备的第一RRC信令，所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
在一种可选的实现方式中，收发单元720，还用于接收来自无线接入网设备的第二RRC信令；所述第二RRC信令指示所述分段数量M。
在一种可选的实现方式中，处理单元710还用于：若对所述M个第二子序列中的任一个第二子序列校验不通过，则停止对所述M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理；或者若对所述M个第二子序列中的任一个第二子序列校验不通过，则根据所述M个第二子序列中校验通过的至少一个第二子序列确定控制信息。
在一种可选的实现方式中，处理单元710，具体用于对所述第一序列进行解调之后，对解调后的第一序列进行解扰处理，生成所述第二序列。
当通信装置700用于实现图4所示的方法实施例中基站的功能时，处理单元710，用于根据下行控制信息DCI的分段数量M对所述DCI进行分段处理，得到M个第二子序列，M为大于1的整数。分别对所述M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列，再对所述M个第一子序列进行级联操作，得到第二序列，然后对所述第二序列进行调制生成第一序列。收发单元720，用于向终端发送所述第一序列，所述第一序列承载在M*N个控制信道单元CCE上，M*N为CCE聚合等级，N为正整数。
在一种可选的实现方式中，处理单元710，具体用于根据所述DCI的长度和所述DCI的分段数量，确定所述M个第二子序列中每个第二子序列的长度。根据每个第二子序列的长度对所述下行控制信息进行分段处理，得到所述M个第二子序列。
在一种可选的实现方式中，处理单元710，还用于在所述DCI中添加填充字段，以使所述M个第二子序列的长度相同。
在一种可选的实现方式中，处理单元710，还用于根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述DCI的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者根据所述CCE聚合等级和第二对应关系确定所述DCI的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
在一种可选的实现方式中，收发单元720，还用于向终端发送第一RRC信令，所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
在一种可选的实现方式中，收发单元720，还用于向终端发送第二RRC信令；所述第二RRC信令指示所述分段数量M。
在一种可选的实现方式中，处理单元710，还用于对所述第二序列调制之前，对所述 第二序列进行加扰处理。
有关上述处理单元710和收发单元720更详细的描述可以参考图4所示的方法实施例中相关描述。
如图8所示，通信装置800包括处理器810和接口电路820。处理器810和接口电路820之间相互耦合。可以理解的是，接口电路820可以为收发器或输入输出接口。可选的，通信装置800还可以包括存储器830，用于存储处理器810执行的指令或存储处理器810运行指令所需要的输入数据或存储处理器810运行指令后产生的数据。
当通信装置800用于实现图4所示的方法时，处理器810用于实现上述处理单元710的功能，接口电路820用于实现上述收发单元720的功能。
当上述通信装置为应用于终端的芯片时，该终端芯片实现上述方法实施例中终端的功能。该终端芯片从终端中的其它模块(如射频模块或天线)接收信息，该信息是基站发送给终端的；或者，该终端芯片向终端中的其它模块(如射频模块或天线)发送信息，该信息是终端发送给基站的。
当上述通信装置为应用于基站的模块时，该基站模块实现上述方法实施例中基站的功能。该基站模块从基站中的其它模块(如射频模块或天线)接收信息，该信息是终端发送给基站的；或者，该基站模块向基站中的其它模块(如射频模块或天线)发送信息，该信息是基站发送给终端的。这里的基站模块可以是基站的基带芯片，也可以是DU或其他模块，这里的DU可以是开放式无线接入网(open radio access network，O-RAN)架构下的DU。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以在硬件中实现，也可以在可由处理器执行的软件指令中实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于基站或终端中。处理器和存储介质也可以作为分立组件存在于基站或终端中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数 据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘；还可以是半导体介质，例如，固态硬盘。该计算机可读存储介质可以是易失性或非易失性存储介质，或可包括易失性和非易失性两种类型的存储介质。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。

Claims (16)

  1. 一种控制信息传输方法，由终端或应用于终端的模块执行，其特征在于，包括：
    接收来自无线接入网设备的第一序列，所述第一序列承载在M*N个控制信道单元CCE上，M*N为CCE聚合等级，M为大于1的整数、N为正整数；
    对所述第一序列进行解调生成第二序列；
    对所述第二序列进行处理得到M个第一子序列；
    对所述M个第一子序列进行译码处理，得到M个第二子序列；
    若对所述M个第二子序列中的每个第二子序列分别校验通过，则根据所述M个第二子序列生成下行控制信息DCI。
  2. 如权利要求1所述的方法，其特征在于，所述对所述第二序列进行处理得到M个第一子序列，包括：
    根据所述第二序列中的M个第一子序列与所述M*N个CCE之间的映射关系，对所述第二序列进行处理得到所述M个第一子序列；其中，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
  3. 如权利要求1或2所述的方法，其特征在于，所述根据所述M个第二子序列生成下行控制信息，包括：
    根据所述M个第二子序列对应的调制符号映射到所述M*N个CCE的顺序，对所述M个第二子序列进行级联操作，生成所述DCI。
  4. 如权利要求3所述的方法，其特征在于，对所述M个第二子序列进行级联操作之后，所述方法还包括：
    删除填充字段。
  5. 如权利要求1-4任一项所述的方法，其特征在于，所述方法还包括：
    根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述第二序列的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者
    根据所述CCE聚合等级和第二对应关系确定所述第二序列的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
  6. 如权利要求5所述的方法，其特征在于，所述第一对应关系或所述第二对应关系为协议预定义的；或者
    所述方法还包括：
    接收来自所述无线接入网设备的第一无线资源控制RRC信令，所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
  7. 如权利要求1-4任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述无线接入网设备的第二RRC信令，所述第二RRC信令指示所述分段数量M。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述方法还包括：
    若对所述M个第二子序列中的任一个第二子序列校验不通过，则停止对所述M个第二子序列中未校验的第二子序列对应的第一子序列的译码处理；或者
    若对所述M个第二子序列中的任一个第二子序列校验不通过，则根据所述M个第二子序列中校验通过的至少一个第二子序列确定控制信息。
  9. 一种控制信息传输方法，由无线接入网设备或应用于无线接入网设备的模块执行，其特征在于，所述方法包括：
    根据下行控制信息DCI的分段数量M对所述DCI进行分段处理，得到M个第二子序列，M为大于1的整数；
    分别对所述M个第二子序列中的每个第二子序列进行编码处理，得到M个第一子序列；
    对所述M个第一子序列进行级联操作，得到第二序列；
    对所述第二序列进行调制生成第一序列；
    向终端发送所述第一序列，所述第一序列承载在M*N个控制信道单元CCE上，M*N为CCE聚合等级，N为正整数。
  10. 如权利要求9所述的方法，其特征在于，所述M个第一子序列中的每一个第一子序列对应的调制符号映射到所述M*N个CCE中的N个CCE上，且不同的第一子序列对应的调制符号映射到N个不同的CCE上。
  11. 如权利要求9或10所述的方法，其特征在于，
    所述M个第二子序列的长度相同；或者
    所述M个第二子序列中前M-1个第二子序列的长度相同；或者
    所述M个第二子序列中后M-1个第二子序列的，长度相同。
  12. 如权利要求9-11任一项所述的方法，其特征在于，所述方法还包括：
    根据所述CCE聚合等级、所述DCI的长度和第一对应关系确定所述DCI的分段数量M，其中，所述第一对应关系为DCI的长度、CCE聚合等级和分段数量M之间的对应关系；或者
    根据所述CCE聚合等级和第二对应关系确定所述DCI的分段数量M，其中，所述第二对应关系为CCE聚合等级与分段数量M之间的对应关系。
  13. 如权利要求12所述的方法，其特征在于，所述第一对应关系或所述第二对应关系为协议预定义的；或者
    所述方法还包括：
    向所述终端发送第一无线资源控制RRC信令，所述第一RRC信令指示所述第一对应关系或所述第二对应关系。
  14. 如权利要求9-12任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端发送第二RRC信令，所述第二RRC信令指示所述分段数量M。
  15. 一种通信装置，其特征在于，包括用于执行如权利要求1至8中的任一项所述方法的模块；或包括用于执行如权利要求9至14中的任一项所述方法的模块。
  16. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至8中任一项所述的方法；或实现如权利要求9至14中任一项所述的方法。
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