Method and apparatus for receiving downlink control information

Abstract

This invention provides a method and apparatus for receiving downlink control information, comprising: determining a plurality of physical downlink control channel candidate sets for a target monitoring time (MO), wherein the physical downlink control channel candidate sets include several physical downlink control channel candidates corresponding to the same type of search space; decoding the physical downlink control channels in the physical downlink control channel candidate sets, and determining the successfully decoded physical downlink control channel as the target physical downlink control channel; and receiving downlink control information transmitted from the network side through the target physical downlink control channel. This invention solves the problem of long delays in blind detection of physical downlink control channels in related technologies.

Description

Technical Field

[0001] The present invention relates to the field of communications, and more specifically, to a method and apparatus for receiving downlink control information. Background Technology

[0002] In NR and LTE systems, the PDCCH carries downlink control information (DCI), and all UEs need to perform blind detection of the PDCCH (Physical Downlink Control Channel).

[0003] For NR systems, a single UE can be configured with multiple CORESETs (Control Resource Sets, a set of physical resources, specific areas on the NR downlink resource grid used to carry PDCCH / DCI (Downlink Channel Indicator) parameters). Multiple search spaces can be configured within the same CORESET. Each search space may contain multiple MOs (Monitoring Occasions) within a single slot. For different search spaces, MOs within a single slot may partially or completely overlap. One MO can carry one or more DCIs. The example defines 3 CORESETs and 4 search spaces (each color represents one search space), with each square representing one MO. Two squares belonging to different search spaces that completely overlap are merged into one MO.

[0004] For NR systems, a single UE can be configured with multiple CORESETs (Control Resource Sets, a set of physical resources, specific areas on the NR downlink resource grid used to carry PDCCH / DCI (Downlink Channel Indicator) parameters). Multiple search spaces can be configured within the same CORESET. Each search space may contain multiple MOs (Monitoring Occasions) within a single slot. For different search spaces, MOs within a single slot may partially or completely overlap. One MO can carry one or more DCIs. Similar to LTE, each MO in NR can be associated with different DCI formats, DCI sizes, search space types, the number of candidates at different aggregation levels (AL=1 / 2 / 4 / 8 / 16), RNTI values, etc.

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

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

[0007] Option 1: Advantages: Each candidate is processed serially in a pipeline, resulting in a smaller buffer. Disadvantages: Performing channel estimation, channel equalization, and QAM demodulation multiple times on the same RB (Resource Block, a unit of resource allocation for service channels, consisting of one time slot in the time domain and 12 subcarriers in the frequency domain) increases the latency of blind detection processing.

[0008] Scheme 2: Advantages: (1) Merging completely overlapping MOs; (2) Finding the RBs corresponding to different candidates within the same MO, thereby simplifying channel estimation, channel equalization, and QAM demodulation, and reducing processing latency. 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 high interface overhead and complex configuration; (2) A buffer is needed to buffer the LLRs of the demodulated output.

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

[0010] This invention provides a method and apparatus for receiving downlink control information, which at least solves the problem of long delay in blind detection of the physical downlink control channel in related technologies.

[0011] According to an 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 time (MO), wherein the physical downlink control channel candidate set includes several physical downlink control channel candidates corresponding to the same type of search space; decoding the physical downlink control channels in the physical downlink control channel candidate set, and determining the successfully decoded physical downlink control channel as the 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, decoding the physical downlink control channels in the physical downlink control channel candidate set and determining the successfully decoded physical downlink control channels as target physical downlink control channels includes: performing the following operations on the physical downlink control channel candidate set of the target monitoring time MO, wherein the physical downlink control channel candidate set during the operation 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; if 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; if there are no successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set, and if 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 time MO, decoding the physical downlink control channel candidates in the next physical downlink control channel candidate set.

[0013] In one exemplary embodiment, determining a plurality of physical downlink control channel (PLC) candidate sets for a target monitoring timing (MO) includes: in an NR system, determining a plurality of search spaces associated with the target monitoring timing (MO); determining PLC candidate sets for each search space based on the aggregation level of each search space, wherein each search space includes a plurality of aggregation levels, and the PLC candidate set corresponding to each aggregation level is obtained through upper-layer signaling issued by a base station; and determining the PLC candidate set for the target monitoring timing (MO) based on the PLC candidate sets for each search space.

[0014] In an exemplary embodiment, determining the physical downlink control channel candidate set of the target monitoring timing MO based on the physical downlink control channel candidates of each search space includes: determining 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 from the physical downlink control channel candidates corresponding to the multiple search spaces as a physical downlink control channel candidate set of the multiple physical downlink control channel candidate set of the target monitoring timing MO.

[0015] In one exemplary embodiment, determining a plurality of physical downlink control channel candidate sets for a target monitoring timing MO further includes: determining a monitoring timing MO contained only in a subframe in an LTE system as the target monitoring timing MO; and determining the set of all unprocessed physical downlink control channel candidates associated with the target monitoring timing MO as the physical downlink control channel candidate set for the target monitoring timing MO.

[0016] In an exemplary embodiment, decoding the physical downlink control channels in the candidate set of physical downlink control channels and determining the successfully decoded physical downlink control channels as target physical downlink control channels includes: performing the following operations on the physical downlink control channels in the candidate set of physical downlink control channels, wherein the physical downlink control channel during the operation is referred to as the current physical downlink control channel: decoding the current physical downlink control channel to obtain a cyclic redundancy check (CRC) code to be verified; verifying the CRC code to be verified; and if the CRC code to be verified is successfully verified, 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 channels in the physical downlink control channel candidate set, the method further includes: determining physical downlink control channel candidates for each DCI format corresponding to the target monitoring timing MO, and 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; and 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 downlink control information receiving device is provided, comprising: a determining module, configured to determine a plurality of physical downlink control channel candidate sets for a target monitoring time (MO), wherein the physical downlink control channel candidate sets include several 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 the target physical downlink control channel; and a receiving module, configured to receive downlink control information transmitted from 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 also provided, wherein a computer program is stored therein, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

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

[0021] This invention addresses the issue of long latency in blind detection of physical downlink control channels (PLCs) at the monitoring time (MO) granularity. By decoding these PLCs and identifying the successfully decoded PLC as the target PLC, downlink control information transmitted from the network side is received through the target PLC. This solves the problem of long latency in blind detection of PLCs in related technologies, thereby reducing the latency and improving the efficiency of downlink control information reception. Attached Figure Description

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

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

[0024] Figure 3 This 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 This 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 This is a schematic diagram of the overall process according to an embodiment of the present invention;

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

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

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

[0030] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a method of receiving downlink control information according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0031] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the downlink control information receiving method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include 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 memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0032] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices on the network side to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0033] This embodiment provides a method for receiving downlink control information running on the aforementioned mobile terminal. Figure 2 This is a flowchart of a method for receiving downlink control information according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0034] Step S202: Determine multiple physical downlink control channel candidate sets for target monitoring timing MO, wherein the physical downlink control channel candidate set includes several physical downlink control channel candidates corresponding to the same type of search space;

[0035] For NR systems, a UE can be configured with multiple control resource sets (CORESETs). Within the same CORESET, multiple search spaces can be configured. Each search space may have multiple monitoring opportunities (MOs) within a single slot. For different search spaces, the MOs within a slot may partially or completely overlap. One MO can carry one or more DCIs. For example... Figure 3 In the example, each square represents an MO, and two squares that belong to different search spaces and completely overlap are merged into one MO.

[0036] For LTE systems, the Control Format Indicator (CFI) 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 systems, LTE systems have only two search space types, CSS and USS, with 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 in NR can be associated with different DCI formats, DCI sizes, search space types, the number of candidates at different aggregation levels AL=1 / 2 / 4 / 8, RNTI values, etc.

[0040] In this embodiment, PDCCH blind detection is performed at the MO granularity, which is applicable to both NR and LTE systems.

[0041] For NR systems, for the carrier indication field is The downlink BWP (BandWidth part) of the serving cell, for the associated CORESET search space In the time slot Within this search space, the first The PDCCHCandidate number in the CCE (Channel Control Element) of aggregation level L is:

[0042] ,

[0043] To illustrate the processing capabilities of the terminal UE, the maximum number of candidate candidates that the UE needs to process within a slot can be limited. To simplify interface configuration while supporting MO merging across different search spaces and ensuring that RBs are not processed repeatedly at the symbol level, the interface can be designed using a set of candidates.

[0044] Define a PDCCH Candidate set { }, totaling There are 10 PDCCH Candidates (Physical Downlink Control Channel Candidates). ,

[0045] In the NR system, the UE can filter out the search space 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 PDCCH Candidate Set of the target monitoring timing MO from the PDCCH Candidate Set of each search space to be processed.

[0046] Specifically, in the NR system, multiple search spaces associated with the target monitoring timing (MO) are determined; physical downlink control channel (PLC) candidates for each search space are determined based on the aggregation level of each search space, wherein each search space includes multiple aggregation levels, and the PLC candidate corresponding to each aggregation level is obtained through upper-layer signaling issued by the base station (the base station issues upper-layer signaling to the terminal, indicating the PLC candidate corresponding to each aggregation level); the PLC candidate set for the target monitoring timing (MO) is determined based on the PLC candidates for each search space. The set of PLC 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 PLC candidates corresponding to the multiple search spaces is determined as one PLC candidate set within the multiple PLC candidate set for the target monitoring timing (MO).

[0047] For example, within a time slot (target time slot), there may be multiple monitoring opportunities (MOs) (including the target monitoring opportunity among the multiple MOs). Each MO corresponds to multiple PDCCH Candidate Sets. The PDCCH Candidate for each monitoring opportunity MO (including the target monitoring opportunity MO) is determined from N PDCCH Candidate Sets, such as... Figure 4The parameters of PDCCH CandidateSet (Physical Downlink Control Channel Candidate Set) 0~M-1 shown are common parameters of all MOs. Each monitoring time MO indicates which PDCCH Candidate Sets are included in that monitoring time MO. A PDCCH Candidate Set can contain 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 Candidate Set are the same.

[0048] Table 2

[0049]

[0050] For blind detection of PDCCH in LTE systems, 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 for the target detection timing MO.

[0051] ,

[0052] ,

[0053] Define a PDCCH Candidate set Total including One PDCCH Candidate, of which , .

[0054] Step S204: 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;

[0055] The following operations are performed on the physical downlink control channel candidate sets within the plurality of physical downlink control channel candidate sets. The physical downlink control channel candidate set used during these operations is referred to as the current physical downlink control channel candidate set: Decoding the physical downlink control channel candidates in the current physical downlink control channel candidate set; if a successfully decoded control channel exists in the current physical downlink control channel candidate set, that successfully decoded control channel is determined as the target physical downlink control channel. If no successfully decoded control channel exists in the current physical downlink control channel candidate set, decoding the physical downlink control channel in the next downlink control channel candidate set is performed.

[0056] The following operations are performed on the physical downlink control channels in the candidate set of physical downlink control channels, and the physical downlink control channel during the operation is called the current physical downlink control channel: the current physical downlink control channel is decoded to obtain a cyclic redundancy check (CRC) code to be verified; the CRC code to be verified is verified; if the CRC code to be verified is successfully verified, the current physical downlink control channel is determined as the target physical downlink control channel.

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

[0058] Through the above steps, by performing blind detection on the physical downlink control channels (PLCs) in the multiple candidate PLCs for the target monitoring time (MO) at the granularity of the MO, and by decoding the PLCs in the candidate PLCs, the successfully decoded PLC is identified as the target PLC. Downlink control information transmitted from the network side is then received through the target PLC. This solves the problem of long latency in blind detection of PLCs in related technologies, achieving the effect of reducing the latency of blind detection of PLCs and improving the reception efficiency of downlink control information.

[0059] The entity performing the above steps can be a terminal UE, but is not limited to this.

[0060] like Figure 5 The flowchart shown is as follows. Before step S202 above, the method further includes: determining the physical downlink control channel candidates under each DCI format in the target monitoring timing 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 the resource block union; and 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 require repeated processing of certain RBs, reducing blind detection latency. Given the limited number of downlink control channel (PDCCH) candidates to be processed by the UE, downlink control channel candidate sets are configured, reducing overall interface cost. This architecture is applicable to both LTE and NR systems. PDCCH blind detection is performed at the MO granularity, with each MO associated with one or more downlink control channel candidate sets. It supports MO merging and RB union before symbol-level reception processing, and performs blind detection processing on each downlink control channel candidate set of the MO at the bit level.

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

[0063] This embodiment also provides a downlink control information receiving device, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

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

[0065] In an exemplary embodiment, the above-described apparatus is further configured to perform the following operations on the physical downlink control channel candidate set of the target monitoring time MO, wherein the physical downlink control channel candidate set during the operation is referred to as the 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 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; if there are no successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set, and if there is a next physical downlink control channel candidate set of the current physical downlink control channel candidate set in the multiple physical downlink control channel candidate sets of the target monitoring time MO, decoding the physical downlink control channel candidates in the next physical downlink control channel candidate set.

[0066] In an exemplary embodiment, the above-described apparatus is further configured to, in an NR system, determine a plurality of search spaces associated with the target monitoring timing (MO); determine physical downlink control channel candidates for each of the plurality of search spaces based on the aggregation level of each search space, wherein each search space includes a plurality of aggregation levels, and the physical downlink control channel candidate corresponding to each aggregation level is obtained through upper-layer signaling issued by the base station; and determine a set of physical downlink control channel candidates for the target monitoring timing (MO) based on the physical downlink control channel candidates of each search space.

[0067] In an exemplary embodiment, the above-described apparatus is further configured to determine 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 from the physical downlink control channel candidates corresponding to the plurality of search spaces as a physical downlink control channel candidate set of the multiple physical downlink control channel candidate set of the target monitoring time (MO).

[0068] In an exemplary embodiment, the above-described apparatus is further configured to determine a single monitoring opportunity (MO) contained in a subframe in an LTE system as the target monitoring opportunity (MO); and to determine the set of all unprocessed physical downlink control channel candidates 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-described apparatus is further configured to perform the following operations on the physical downlink control channels in the physical downlink control channel candidate set, wherein the physical downlink control channel during the operation is referred to as the current physical downlink control channel: decoding the current physical downlink control channel to obtain a cyclic redundancy check (CRC) code to be verified; verifying the CRC code to be verified; and, if the CRC code to be verified is successfully verified, determining the current physical downlink control channel as the target physical downlink control channel.

[0070] In an exemplary embodiment, the above-described apparatus is further configured to determine the physical downlink control channel candidates under each DCI format corresponding to the target monitoring timing MO, and the resource blocks to be processed corresponding to the physical downlink control channel candidates; to take the union of the resource blocks to be processed to obtain the resource block union; and to 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, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0072] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

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

[0074] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0075] In one 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] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0077] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for receiving downlink control information, characterized in that, include: Multiple physical downlink control channel candidate sets are determined for the target monitoring timing (MO), wherein the physical downlink control channel candidate sets include several physical downlink control channel candidates corresponding to the same type of search space; 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; The target physical downlink control channel receives downlink control information transmitted from the network side.

2. The method according to claim 1, characterized in that, Decoding the physical downlink control channels in the candidate set of physical downlink control channels, and determining the successfully decoded physical downlink control channels as the target physical downlink control channels, includes: Perform the following operations on the physical downlink control channel candidate set of the target monitoring timing MO, and the physical downlink control channel candidate set during the operation is called the current physical downlink control channel candidate set: Decode the physical downlink control channel candidates in the current physical downlink control channel candidate set; If a successfully decoded physical downlink control channel candidate exists in the current physical downlink control channel candidate set, the successfully decoded physical downlink control channel candidate is determined as the target physical downlink control channel; If there are no successfully decoded physical downlink control channel candidates in the current physical downlink control channel candidate set, and if there is a next physical downlink control channel candidate set in the multiple physical downlink control channel candidate sets of the target monitoring timing (MO), then 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, Multiple physical downlink control channel candidate sets are determined for the target monitoring timing (MO), including: In the NR system, multiple search spaces are determined to be associated with the target monitoring timing (MO). The physical downlink control channel candidate for each search space is determined based on the aggregation level of each of the multiple search spaces, wherein each search space includes multiple aggregation levels, and the physical downlink control channel candidate corresponding to each aggregation level is obtained through upper-layer signaling issued by the base station. The physical downlink control channel candidate set of the target monitoring timing MO is determined based on the physical downlink control channel candidates of each search space.

4. The method according to claim 3, characterized in that, The step of determining the physical downlink control channel candidate set of the target monitoring timing MO based on the physical downlink control channel candidates of each search space includes: The 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 one physical downlink control channel candidate set in the multiple physical downlink control channel candidate set of the target monitoring timing (MO).

5. The method according to claim 1 or 2, characterized in that, The physical downlink control channel candidate set for determining the target monitoring timing (MO) also includes: The target monitoring time MO is defined as the monitoring time MO that is contained only in a subframe of the LTE system. The set of all unprocessed physical downlink control channel candidates associated with the target monitoring time MO is determined as the physical downlink control channel candidate set of the target monitoring time MO.

6. The method according to claim 1, characterized in that, Decoding the physical downlink control channels in the candidate set of physical downlink control channels, and determining the successfully decoded physical downlink control channels as the target physical downlink control channels, includes: Perform the following operations on the physical downlink control channels in the physical downlink control channel candidate set, and the physical downlink control channel during the operation is called the current physical downlink control channel: The current physical downlink control channel is decoded to obtain the Cyclic Redundancy Check (CRC) code to be verified. The cyclic redundancy check (CRC) code to be verified is checked. If the CRC check of the code to be checked is successful, 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 channels in the candidate set of physical downlink control channels, the method further includes: Determine the physical downlink control channel candidates for each DCI format corresponding to the target monitoring timing 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 the resource block union; Channel estimation, channel equalization, and orthogonal amplitude modulation are performed on the union of the resource blocks.

8. A receiving device for downlink control information, characterized in that, include: The determination module is used to determine multiple physical downlink control channel candidate sets for the target monitoring timing MO, wherein the physical downlink control channel candidate sets include several physical downlink control channel candidates corresponding to the same type of search space; The decoding module is 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; The receiving module is used to receive downlink control information transmitted from 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, when executed by a processor, implements the steps of the method described in any one of claims 1 to 7.

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, it implements the steps of the method described in any one of claims 1 to 7.

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