Method and device for receiving downlink control information

Abstract

Provided in an embodiment of the present invention are a method and device for receiving downlink control information, the method comprising: determining a plurality of physical downlink control channel candidate sets of a target monitoring opportunity MO, the physical downlink control channel candidate sets comprising a plurality of physical downlink control channel candidates corresponding to search spaces of the same type; decoding the physical downlink control channel in the physical downlink control channel candidate set, and determining the successfully decoded physical downlink control channel as a target physical downlink control channel; and receiving downlink control information transmitted by a network side through the target physical downlink control channel. According to the invention, the problem of long time delay of blind detection of the physical downlink control channel in the prior art is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and in particular, to a method and device for receiving downlink control information. Background Art

[0002] In NR and LTE systems, PDCCH carries downlink control information (DCI), and the terminal UE needs to perform PDCCH (physical downlink control channel) blind detection.

[0003] For the NR system, one UE can be configured with multiple CORESETs (control resource sets, which are a group of physical resources, a specific area on the NR downlink resource grid, used to carry PDCCH / DCI (downlink channel indicator) parameters). Multiple search spaces can be configured on the same CORESET. Each search space may have multiple MOs (monitoring opportunities) in one slot. For different search spaces, the MOs in one slot may partially overlap or completely overlap. One or more DCIs can be carried in one MO. In the example below, three CORESETs and four search spaces are defined (each color represents one search space). Each block represents an MO, and two blocks belonging to different search spaces and completely overlapping are merged into one MO.

[0004] For the NR system, one UE can be configured with multiple CORESETs (control resource sets, which are a group of physical resources, a specific area on the NR downlink resource grid, used to carry PDCCH / DCI (downlink channel indicator) parameters). Multiple search spaces can be configured on the same CORESET. Each search space may have multiple MOs (monitoring opportunities) in one slot. For different search spaces, the MOs in one slot may partially overlap or completely overlap. One MO can carry one or more DCIs. Like LTE, each MO in NR can be associated with different DCI formats, DCI sizes, search space types, the number of candidates with different aggregation levels AL=1 / 2 / 4 / 8 / 16, RNTI values, etc.

[0005] Existing technical solution 1, using PDCCH Candidate as the granularity to serially perform channel estimation, channel equalization, QAM demodulation and bit-level reception processing;

[0006] Solution 2: With MO as the granularity, each MO is processed serially, and channel estimation, channel equalization, and QAM demodulation are performed on the RBs corresponding to all PDCCH Candidates to be blindly detected in each DCI format in each MO, and then blind detection is performed on each PDCCH Candidate at the bit level.

[0007] Solution 1: Advantages: Each candidate is processed serially, and the buffer is small. Disadvantages: Channel estimation, channel equalization, and QAM demodulation are performed multiple times on the same RB (ResourceBlock, which is a resource unit for service channel resource allocation, a time slot in the time domain, and 12 subcarriers in the frequency domain), which increases the blind detection processing delay.

[0008] Solution 2: Advantages: (1) Merge completely overlapping MOs; (2) Find the RBs corresponding to different candidates in the same MO, thereby simplifying channel estimation, channel equalization, and QAM demodulation, and reducing processing delay. Disadvantages: (1) Each MO is associated with multiple DCI formats under multiple search spaces, and each DCI format is associated with multiple aggregation levels, resulting in large interface overhead and complex configuration; (2) A buffer is required to cache the LLRs output by the demodulation.

[0009] There is currently no effective solution to the above problems. Summary of the invention

[0010] The embodiments of the present invention provide a method and device for receiving downlink control information, so as to at least solve the problem of long delay in blind detection of a physical downlink control channel in the related art.

[0011] According to one embodiment of the present invention, a method for receiving downlink control information is provided, comprising: determining a plurality of physical downlink control channel candidate sets for a target monitoring opportunity MO, wherein the physical downlink control channel candidate set comprises a plurality of physical downlink control channel candidates corresponding to the same type of search space; decoding the physical downlink control channel in the physical downlink control channel candidate set, and determining the successfully decoded physical downlink control channel as a target physical downlink control channel; and receiving downlink control information transmitted by the network side through the target physical downlink control channel.

[0012] In an exemplary embodiment, a physical downlink control channel in the physical downlink control channel candidate set is decoded, and a successfully decoded physical downlink control channel is determined as a target physical downlink control channel, including: performing the following operations on the physical downlink control channel candidate set of the target monitoring opportunity MO, and the physical downlink control channel candidate set when performing the following operations is called a current physical downlink control channel candidate set: decoding the physical downlink control channel candidates in the current physical downlink control channel candidate set; in the case where there are successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set, determining the successfully decoded physical downlink control channel candidates as the target physical downlink control channel; in the case where there are no successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set and there is a next physical downlink control channel candidate set of the current physical downlink control channel candidate set in multiple physical downlink control channel candidate sets of the target monitoring opportunity MO, decoding the physical downlink control channel candidates in the next physical downlink control channel candidate set.

[0013] In an exemplary embodiment, multiple physical downlink control channel candidate sets for a target monitoring opportunity MO are determined, including: in an NR system, multiple search spaces associated with the target monitoring opportunity MO are determined; the physical downlink control channel candidates of the search space are determined according to the aggregation level of each search space in the multiple search spaces, wherein each search space includes multiple aggregation levels, and the physical downlink control channel candidates corresponding to each aggregation level are obtained through upper layer signaling sent by the base station; the physical downlink control channel candidate set for the target monitoring opportunity MO is determined according to the physical downlink control channel candidates of each search space.

[0014] In an exemplary embodiment, the physical downlink control channel candidate set of the target monitoring opportunity MO is determined based on the physical downlink control channel candidates of each of the search spaces, including: determining a set of downlink control channel candidates having the same downlink control information DCI size, the same search space type, the same radio network temporary identifier RNTI bitmap indication, and the same aggregation level among the physical downlink control channel candidates corresponding to the multiple search spaces as a physical downlink control channel candidate set among the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO.

[0015] In an exemplary embodiment, determining multiple physical downlink control channel candidate sets for a target monitoring opportunity MO also includes: determining a monitoring opportunity MO contained only in a subframe in an LTE system as the target monitoring opportunity MO; and determining a set consisting of all physical downlink control channel candidates to be processed associated with the target monitoring opportunity MO as the physical downlink control channel candidate set for the target monitoring opportunity MO.

[0016] In an exemplary embodiment, decoding a physical downlink control channel in the physical downlink control channel candidate set, and determining a successfully decoded physical downlink control channel as a target physical downlink control channel, includes: performing the following operations on the physical downlink control channel in the physical downlink control channel candidate set, and the physical downlink control channel when performing the following operations is called a current physical downlink control channel: decoding the current physical downlink control channel to obtain a cyclic redundancy check code CRC to be checked; checking the cyclic redundancy check code CRC to be checked; and when the cyclic redundancy check code CRC to be checked is successfully checked, determining the current physical downlink control channel as the target physical downlink control channel.

[0017] In an exemplary embodiment, before decoding the physical downlink control channel in the physical downlink control channel candidate set, the method also includes: determining the physical downlink control channel candidates under each DCI format corresponding to the target monitoring opportunity MO, and the resource blocks to be processed corresponding to the physical downlink control channel candidates; taking the union of the resource blocks to be processed to obtain a resource block union; performing channel estimation, channel equalization, and orthogonal amplitude modulation processing on the resource block union.

[0018] According to another embodiment of the present invention, a device for receiving downlink control information is provided, including: a determination module, used to determine multiple physical downlink control channel candidate sets of a target monitoring opportunity MO, wherein the physical downlink control channel candidate set includes a number of physical downlink control channel candidates corresponding to the same type of search space; a decoding module, used to decode the physical downlink control channel candidates in the physical downlink control channel candidate set, and determine the successfully decoded physical downlink control channel candidate as the target physical downlink control channel; a receiving module, used to receive the downlink control information transmitted by the network side through the target physical downlink control channel.

[0019] According to yet another embodiment of the present invention, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any one of the above method embodiments when run.

[0020] According to yet another embodiment of the present invention, there is provided an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0021] Through the present invention, since the monitoring opportunity MO is used as the granularity, the physical downlink control channel candidates in the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO are blindly detected, and the physical downlink control channel candidates in the physical downlink control channel candidate set are decoded, and the successfully decoded physical downlink control channel candidates are determined as the target physical downlink control channel, and the downlink control information transmitted by the network side is received through the target physical downlink control channel. The problem of long delay in blind detection of the physical downlink control channel in the related art is solved, and the delay in blind detection of the physical downlink control channel is reduced, and the effect of improving the reception efficiency of the downlink control information is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a hardware structure block diagram of a mobile terminal according to a method for receiving downlink control information according to an embodiment of the present invention;

[0023] Figure 2 is a flowchart of a method for receiving downlink control information according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a method for receiving downlink control information according to an embodiment of the present invention Figure 1 ;

[0025] Figure 4 is a schematic diagram of a method for receiving downlink control information according to an embodiment of the present invention Figure 2 ;

[0026] Figure 5 is a schematic diagram of an overall process according to an embodiment of the present invention;

[0027] Figure 6 is a structural block diagram of a device for receiving downlink control information according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 FIG. 1 is a hardware structure block diagram of a mobile terminal of a method for receiving downlink control information according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0031] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for receiving downlink control information in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0032] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through the network side so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0033] In this embodiment, a method for receiving downlink control information running on the above mobile terminal is provided. Figure 2 is a flowchart of a method for receiving downlink control information according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0034] Step S202, determining a plurality of physical downlink control channel candidate sets for a target monitoring occasion MO, wherein the physical downlink control channel candidate set includes a plurality of physical downlink control channel candidates corresponding to a search space of the same type;

[0035] For NR system, a UE can be configured with multiple control resource sets CORESET, and multiple search spaces can be configured on the same CORESET. Each search space may have multiple monitoring opportunities (MO) in a time slot. For different search spaces, MOs in a slot may overlap partially or completely. One MO can carry one or more DCIs. Figure 3 Each block in the example represents a MO, and two blocks that belong to different search spaces and completely overlap are merged into one MO.

[0036] For LTE system, CFI (Control Format Indicator) indicates the number of OFDM symbols occupied by the control resource domain, which is equivalent to only one MO per subframe. Slightly different from NR system, LTE system has only two search space types, CSS and USS, and the number of physical downlink control channel candidates (PDCCH candidates) at different aggregation levels AL=1 / 2 / 4 / 8, as shown in Table 1 below.

[0037] Table 1

[0038]

[0039] Like LTE, each MO can be associated with different DCI formats, DCI sizes, search space types, number of candidates for different aggregation levels AL=1 / 2 / 4 / 8, RNTI values, etc.

[0040] In this embodiment, PDCCH blind detection is performed with MO as the granularity, which is applicable to PDCCH blind detection of both NR system and LTE system.

[0041] For the NR system, the carrier indicator field is n CI The downlink BWP (BandWidth part) of the serving cell is, for the search space s associated with CORESET p, in the time slot In this search space, The CCE (Channel Control Element) number of each PDCCH Candidate at aggregation level L is:

[0042]

[0043] To illustrate the processing capability of the terminal UE, the maximum number of candidates that the UE needs to process in one slot can be limited. To simplify the interface configuration, while supporting the merging of MOs in different search spaces and preventing repeated processing of RBs at the symbol level, the interface can be designed in the form of candidate sets.

[0044] Define a PDCCH Candidate set Total includes PDCCH Candidate (Physical Downlink Control Channel Candidate), where

[0045] In the NR system, the UE can screen out the search spaces to be processed and the PDCCH Candidate Set (physical downlink control channel candidate set) of each search space to be processed according to the preset conditions of the actual scenario, and determine the physical downlink control channel candidate set of the target monitoring opportunity MO from the physical downlink control channel candidate set of each search space to be processed.

[0046] Specifically, in the NR system, multiple search spaces associated with the target monitoring opportunity MO are determined; the physical downlink control channel candidates of the search space are determined according to the aggregation level of each of the search spaces in the multiple search spaces, wherein each of the search spaces includes multiple aggregation levels, and the physical downlink control channel candidates corresponding to each aggregation level are obtained through upper layer signaling sent by the base station (the base station sends the upper layer signaling to the terminal, indicating the physical downlink control channel candidates corresponding to each aggregation level); the physical downlink control channel candidate set of the target monitoring opportunity MO is determined according to the physical downlink control channel candidates of each search space. A set of downlink control channel candidates with the same downlink control information DCI size, the same search space type, the same radio network temporary identifier RNTI bitmap indication, and the same aggregation level among the physical downlink control channel candidates corresponding to the multiple search spaces is determined as a physical downlink control channel candidate set among the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO.

[0047] For example, there may be multiple monitoring opportunities MO (including the target monitoring opportunity) in a time slot (target time slot), and there are multiple PDCCH Candidate Sets (physical downlink control channel candidate sets) corresponding to one MO. The PDCCH Candidate (physical downlink control channel candidate) of each monitoring opportunity MO (including the target monitoring opportunity MO) is determined in N PDCCH Candidate Sets (physical downlink control channel candidate sets), such as Figure 4The parameters of PDCCH CandidateSet (physical downlink control channel candidate set) 0 to M-1 shown are common parameters of all MOs. Each monitoring opportunity MO indicates which PDCCH Candidate Sets (physical downlink control channel candidate sets) are included in the monitoring opportunity MO. A PDCCH Candidate Set (physical downlink control channel candidate set) may include the parameters shown in Table 2. The search space type, rnti bitmap indication, and aggregation level of the physical downlink control channel candidates in a PDCCH CandidateSet (physical downlink control channel candidate set) are the same.

[0048] Table 2

[0049]

[0050] For the PDCCH blind detection of the LTE system, LTE has only one MO, which is associated with all physical downlink control channel candidate sets to be processed in the LTE system. Therefore, in the LTE system, all physical downlink control channel candidate sets to be processed in the LTE are determined as multiple physical downlink control channel candidate sets of the target monitoring opportunity MO.

[0051]

[0052]

[0053] Define a PDCCH Candidate set {m′}, which contains M (L) PDCCH Candidates, where m′=m+M (L) ·n CI ,m=0,…,M (L) -1.

[0054] Step S204, decoding the physical downlink control channel candidates in the physical downlink control channel candidate set, and determining the successfully decoded physical downlink control channel candidate as the target physical downlink control channel;

[0055] The following operations are performed on a physical downlink control channel candidate set in the multiple physical downlink control channel candidate sets, and the physical downlink control channel candidate set when the following operations are performed is called a current physical downlink control channel candidate set: decoding the physical downlink control channel candidates in the current physical downlink control channel candidate set; if there is a control channel that is successfully decoded in the current physical downlink control channel candidate set, determining the successfully decoded control channel as the target physical downlink control channel. If there is no successfully decoded control channel in the current physical downlink control channel candidate set, decoding the physical downlink control channel in the next downlink control channel candidate set.

[0056] The following operations are performed on the physical downlink control channel in the physical downlink control channel candidate set, and the physical downlink control channel when performing the following operations is called the current physical downlink control channel: decoding the current physical downlink control channel to obtain a cyclic redundancy check code CRC to be checked; verifying the cyclic redundancy check code CRC to be checked; when the cyclic redundancy check code CRC to be checked is successfully verified, determining the current physical downlink control channel as the target physical downlink control channel.

[0057] Step S206: receiving downlink control information transmitted by the network side through the target physical downlink control channel.

[0058] Through the above steps, since the monitoring opportunity MO is used as the granularity, the physical downlink control channels in the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO are blindly detected, and the physical downlink control channels in the physical downlink control channel candidate sets are decoded, and the successfully decoded physical downlink control channels are determined as the target physical downlink control channels, and the downlink control information transmitted by the network side is received through the target physical downlink control channels. The problem of long delay in blind detection of physical downlink control channels in related technologies is solved, and the delay in blind detection of physical downlink control channels is reduced, and the efficiency of receiving downlink control information is improved.

[0059] The execution subject of the above steps may be a terminal UE, etc., but is not limited thereto.

[0060] like Figure 5 As shown is a sorted flow chart. Before the above step S202, the method also includes: determining the physical downlink control channel candidates under each DCI format within the target monitoring opportunity MO and the resource blocks to be processed corresponding to the physical downlink control channel candidates; taking the union of the resource blocks to be processed to obtain a resource block union; performing channel estimation, channel equalization, and orthogonal amplitude modulation processing on the resource block union.

[0061] This application supports MO merging, and symbol-level processing (including channel estimation, channel equalization, and QAM demodulation) does not need to repeat processing of certain RBs, reducing blind detection delay; based on the premise that the number of downlink control channel candidates PDCCH candidates to be processed by the UE is limited, the downlink control channel candidate set is configured to reduce the overall interface cost; this architecture is applicable to both LTE and NR systems. PDCCH blind detection is performed at the MO granularity, and each MO is associated with one or more downlink control channel candidate sets. MO merging is supported, and symbol-level reception processing is performed after the RB takes the merged set, and blind detection processing is performed on each downlink control channel candidate set of the MO at the bit level.

[0062] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0063] In this embodiment, a device for receiving downlink control information is also provided, which is used to implement the above embodiments and preferred implementation modes, and the descriptions that have been made are not repeated here. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0064] Figure 6 is a structural block diagram of a device for receiving downlink control information according to an embodiment of the present invention. Figure 6 As shown, the device includes: a determination module 62, used to determine multiple physical downlink control channel candidate sets for a target monitoring opportunity MO, wherein the physical downlink control channel candidate set includes a number of physical downlink control channel candidates corresponding to the same type of search space; a decoding module 64, used to decode the physical downlink control channel in the physical downlink control channel candidate set, and determine the successfully decoded physical downlink control channel as the target physical downlink control channel; a receiving module 66, used to receive downlink control information transmitted by the network side through the target physical downlink control channel.

[0065] In an exemplary embodiment, the above-mentioned device is also used to perform the following operations on the physical downlink control channel candidate set of the target monitoring opportunity MO, and the physical downlink control channel candidate set when performing the following operations is called the current physical downlink control channel candidate set: decoding the physical downlink control channel candidates in the current physical downlink control channel candidate set; when there are successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set, determining the successfully decoded physical downlink control channel candidate as the target physical downlink control channel; when there are no successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set and the next physical downlink control channel candidate set of the current physical downlink control channel candidate set exists in multiple physical downlink control channel candidate sets of the target monitoring opportunity MO, decoding the physical downlink control channel candidates in the next physical downlink control channel candidate set.

[0066] In an exemplary embodiment, the above-mentioned device is also used to determine multiple search spaces associated with the target monitoring opportunity MO in the NR system; determine the physical downlink control channel candidates of the search space according to the aggregation level of each search space in the multiple search spaces, wherein each of the search spaces includes multiple aggregation levels, and the physical downlink control channel candidates corresponding to each aggregation level are obtained through upper layer signaling sent by the base station; determine the physical downlink control channel candidate set of the target monitoring opportunity MO according to the physical downlink control channel candidates of each search space.

[0067] In an exemplary embodiment, the above-mentioned device is also used to determine a set of downlink control channel candidates corresponding to the multiple search spaces, which have the same downlink control information DCI size, the same search space type, the same radio network temporary identifier RNTI bitmap indication, and the same aggregation level, as a physical downlink control channel candidate set among the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO.

[0068] In an exemplary embodiment, the above-mentioned device is also used to determine a monitoring opportunity MO contained only in a subframe in the LTE system as the target monitoring opportunity MO; and determine a set consisting of all physical downlink control channel candidates to be processed associated with the target monitoring opportunity MO as the physical downlink control channel candidate set of the target monitoring opportunity MO.

[0069] In an exemplary embodiment, the above-mentioned device is also used to perform the following operations on the physical downlink control channel in the physical downlink control channel candidate set, and the physical downlink control channel when performing the following operations is called the current physical downlink control channel: decoding the current physical downlink control channel to obtain a cyclic redundancy check code CRC to be checked; checking the cyclic redundancy check code CRC to be checked; when the cyclic redundancy check code CRC to be checked is successfully checked, determining the current physical downlink control channel as the target physical downlink control channel.

[0070] In an exemplary embodiment, the above-mentioned device is also used to determine the physical downlink control channel candidates under each DCI format corresponding to the target monitoring opportunity MO, and the resource blocks to be processed corresponding to the physical downlink control channel candidates; take the union of the resource blocks to be processed to obtain a resource block union; perform channel estimation, channel equalization, and orthogonal amplitude modulation processing on the resource block union.

[0071] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0072] An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0073] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0074] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0075] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0076] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0077] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for receiving downlink control information, characterized in that: include: Determine multiple physical downlink control channel candidate sets for target monitoring occasion MO, wherein the physical downlink control channel candidate set includes a plurality of physical downlink control channel candidates corresponding to the same type of search space; Decoding the physical downlink control channel candidates in the physical downlink control channel candidate set, and determining the successfully decoded physical downlink control channel candidate as the target physical downlink control channel; The downlink control information transmitted by the network side is received through the target physical downlink control channel.

2. The method according to claim 1, characterized in that Decoding a physical downlink control channel in the physical downlink control channel candidate set, and determining a successfully decoded physical downlink control channel as a target physical downlink control channel, comprising: The following operations are performed on the physical downlink control channel candidate set of the target monitoring opportunity MO, and the physical downlink control channel candidate set when performing the following operations is called the current physical downlink control channel candidate set: Decoding a physical downlink control channel candidate in the current physical downlink control channel candidate set; If there is a successfully decoded physical downlink control channel candidate in the current physical downlink control channel candidate set, determining the successfully decoded physical downlink control channel candidate as the target physical downlink control channel; When there is no successfully decoded physical downlink control channel candidate in the current physical downlink control channel candidate set and the next physical downlink control channel candidate set of the current physical downlink control channel candidate set exists in multiple physical downlink control channel candidate sets of the target monitoring timing MO, the physical downlink control channel candidates in the next physical downlink control channel candidate set are decoded.

3. The method according to claim 1 or 2, characterized in that: Determine multiple physical downlink control channel candidate sets of the target monitoring opportunity MO, including: In the NR system, determining a plurality of search spaces associated with the target monitoring opportunity MO; Determining a physical downlink control channel candidate of each search space in the multiple search spaces according to an aggregation level of the search space, wherein each search space includes multiple aggregation levels, and a physical downlink control channel candidate corresponding to each aggregation level is obtained through an upper layer signaling sent by a base station; The physical downlink control channel candidate set of the target monitoring opportunity MO is determined according to the physical downlink control channel candidates in each search space.

4. The method according to claim 3, characterized in that The determining of the physical downlink control channel candidate set of the target monitoring opportunity MO according to the physical downlink control channel candidate of each search space includes: A set of downlink control channel candidates corresponding to the multiple search spaces, which have the same downlink control information DCI size, the same search space type, the same radio network temporary identifier RNTI bitmap indication, and the same aggregation level, is determined as a physical downlink control channel candidate set among the multiple physical downlink control channel candidate sets of the target monitoring opportunity MO.

5. The method according to claim 1 or 2, characterized in that: Determining a candidate set of physical downlink control channels for a target monitoring opportunity MO also includes: Determine a monitoring opportunity MO contained only in a subframe in the LTE system as the target monitoring opportunity MO; A set consisting of all to-be-processed physical downlink control channel candidates associated with the target monitoring opportunity MO is determined as a physical downlink control channel candidate set of the target monitoring opportunity MO.

6. The method according to claim 1, characterized in that Decoding a physical downlink control channel in the physical downlink control channel candidate set, and determining a successfully decoded physical downlink control channel as a target physical downlink control channel, comprising: The following operations are performed on the physical downlink control channel in the physical downlink control channel candidate set. The physical downlink control channel when the following operations are performed is called the current physical downlink control channel: Decoding the current physical downlink control channel to obtain a cyclic redundancy check code CRC to be checked; Verifying the cyclic redundancy check code CRC to be verified; In a case where the cyclic redundancy check code CRC to be checked is successfully checked, the current physical downlink control channel is determined as the target physical downlink control channel.

7. The method according to claim 1, characterized in that Before decoding the physical downlink control channel in the physical downlink control channel candidate set, the method further includes: Determine a physical downlink control channel candidate in each DCI format corresponding to a target monitoring opportunity MO, and a resource block to be processed corresponding to the physical downlink control channel candidate; Taking a union of the resource blocks to be processed to obtain a resource block union; Channel estimation, channel equalization, and quadrature amplitude modulation processing are performed on the resource block union.

8. A device for receiving downlink control information, characterized in that: include: A determination module, used to determine multiple physical downlink control channel candidate sets for a target monitoring opportunity MO, wherein the physical downlink control channel candidate set includes a plurality of physical downlink control channel candidates corresponding to the same type of search space; A decoding module, configured to decode the physical downlink control channel candidates in the physical downlink control channel candidate set, and determine the successfully decoded physical downlink control channel candidate as a target physical downlink control channel; The receiving module is used to receive downlink control information transmitted by the network side through the target physical downlink control channel.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program implements the steps of the method described in any one of claims 1 to 7 when executed by a processor.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method described in any one of claims 1 to 7 are implemented.

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