Downlink control information detection method and communication device

Abstract

This application provides a downlink control information detection method and communication device. The downlink control information detection method is applied in a terminal device and includes: receiving first information sent by a network device, the first information instructing the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format; and detecting the first DCI using the first CCE format based on the first information. Using this application, the CCE format used by the terminal device for DCI detection can be flexibly instructed, improving the success rate of DCI detection.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and communication device for detecting downlink control information. Background Technology

[0002] In New Radio (NR) access systems, a single Downlink Control Information (DCI) is carried by at least one Control Channel Element (CCE). The number of CCEs carrying a single DCI is called the Aggregation Level, which can be 1, 2, 4, 8, or 16. Current NR protocols default to using a CCE format where a single CCE comprises six Resource Element Groups (REGs). Terminal devices use this default CCE format to detect DCIs in one or more configured Control Resource Sets (CORESETs). However, if NR is deployed in the same frequency band as Long Term Evolution (LTE), for LTE systems, each downlink subframe (1ms duration) transmits a Cell-Specific Reference Signal (CRS). The CRS transmitted by LTE cells can severely interfere with the transmission of DCIs in NR. If terminal devices consistently use the default CCE format for detection, the success rate of DCI detection will be reduced. Summary of the Invention

[0003] This application provides a downlink control information detection method and communication device, which can flexibly instruct terminal devices to detect the CCE format used by DCI, thereby improving the success rate of DCI detection.

[0004] In a first aspect, embodiments of this application provide a downlink control information detection method, applied in a terminal device, the method comprising:

[0005] The terminal device receives first information sent by a network device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format.

[0006] Based on the first information, the first DCI is detected using the first CCE format.

[0007] Based on the description of the first aspect, the network device receives first information sent by the network device, the first information being used to instruct the terminal device to detect the first DCI using a first CCE format. According to the first information, the first DCI is detected using the first CCE format. The network device of this application can flexibly instruct the terminal device to use the CCE format for detecting the DCI through the first information, thereby improving the success rate of DCI detection.

[0008] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0009] In one alternative implementation, the quantity is an integer not equal to 6.

[0010] In one optional implementation, the method further includes:

[0011] The terminal device receives second information sent by the network device, the second information being used to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format.

[0012] Based on the second information, the first DCI is detected using the second CCE format.

[0013] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0014] In one optional implementation, the first information sent by the receiving network device includes:

[0015] The first information sent by the network device is received in the first search space set;

[0016] The step of detecting the first DCI using the first CCE format includes:

[0017] The first DCI is detected in the first search space set using the first CCE format; or...

[0018] Determine a first control resource set associated with the first search space set, and detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the at least one search space set includes the first search space set; or...

[0019] All search space sets configured on the serving cell where the first search space set is located use the first CCE format to detect the first DCI, and all search space sets configured on the serving cell include the first search space set.

[0020] In one alternative implementation, the first information is carried via a second DCI.

[0021] In an optional implementation, the first information further includes the cell identifier of the serving cell; the step of detecting the first DCI using the first CCE format includes:

[0022] The first DCI is detected using the first CCE format on all search space sets configured on the serving cell.

[0023] In an optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first control resource set; the step of detecting the first DCI using the first CCE format includes:

[0024] The first DCI is detected using the first CCE format in at least one search space set mapped to the first control resource set, wherein the first control resource set is the control resource set configured on the serving cell.

[0025] In an optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first search space set; the step of detecting the first DCI using the first CCE format includes:

[0026] The first search space set configured on the serving cell detects the first DCI using the first CCE format.

[0027] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0028] In one optional implementation, before receiving the first information sent by the network device, the method further includes:

[0029] Perform signal measurements on at least one first communication system cell and transmit the measured reference signal received power (RSRP) of the at least one first communication system cell to the network device.

[0030] In an optional implementation, prior to performing measurements on at least one first communication system cell, the method further includes:

[0031] The terminal device receives an indication message sent by the network device, the indication message being used to instruct the terminal device to report the measured RSRP of the first communication system cell to the network device;

[0032] The step of performing measurements on at least one first communication system cell and transmitting the measured reference received power (RSRP) of the at least one first communication system cell to the network device includes:

[0033] Signal measurements are performed on the at least one first communication system cell according to the instruction information, and the measured RSRP of the at least one first communication system cell is sent to the network device through the physical layer.

[0034] In one optional implementation, before receiving the first information sent by the network device, the method further includes:

[0035] Perform channel measurements on at least one beam and send the measured channel state information of the at least one beam to the network device.

[0036] Secondly, embodiments of this application provide a downlink control information detection method, applied in a network device, the method comprising:

[0037] Determine the detection parameters for adjusting the downlink control information of the terminal equipment;

[0038] Send first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format.

[0039] Based on the description of the second aspect, when determining the detection parameters of the downlink control information of the terminal device, a first message is sent to the terminal device. This first message is used to instruct the terminal device to use a first CCE format to detect the first DCI. For example, when the terminal device is interfered with by neighboring cells, the CCE format used by the terminal device to detect the DCI can be flexibly adjusted to improve the success rate of DCI detection.

[0040] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0041] In one alternative implementation, the quantity is an integer not equal to 6.

[0042] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0043] In one alternative implementation, the first information is carried via a second DCI.

[0044] In one optional implementation, the first information may further include the cell identifier of the serving cell; or, the first information may further include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may further include the cell identifier of the serving cell and the identifier of the first search space set.

[0045] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0046] In an optional implementation, before determining the detection parameters for adjusting the downlink control information of the terminal device, the method further includes:

[0047] Receive at least one RSRP of a first communication system cell sent by the terminal device;

[0048] The detection parameters for adjusting the downlink control information of the terminal device include:

[0049] Based on the RSRP of the at least one first communication system cell, the detection parameters for adjusting the downlink control information of the terminal equipment are determined.

[0050] In an optional implementation, before adjusting the detection parameters of the downlink control information of the terminal device, the method further includes:

[0051] Receive channel state information of at least one beam sent by the terminal device;

[0052] The detection parameters for adjusting the downlink control information of the terminal device include:

[0053] Based on the channel state information of the at least one beam, the detection parameters for adjusting the downlink control information of the terminal device are determined.

[0054] In one optional implementation, determining the detection parameters for adjusting the downlink control information of the terminal device includes:

[0055] Determine the detection parameters for adjusting some or all of the downlink control information of at least one serving cell in which the terminal device is located, or...

[0056] Determine the detection parameters for adjusting the downlink control information of part or all of the control resource set of the serving cell where the terminal device is located, or...

[0057] Determine the detection parameters for adjusting some or all of the search space set of the serving cell where the terminal device is located.

[0058] In one optional implementation, the method further includes:

[0059] Confirm that the terminal device is not affected by signal interference from neighboring cells;

[0060] Send a second message to the network device, the second message being used to instruct the terminal device to detect the first DCI using a second CCE format.

[0061] Thirdly, embodiments of this application provide a communication device applied in a terminal device, the communication device comprising:

[0062] The communication unit is used to receive first information sent by the network device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format;

[0063] The detection unit is used to detect the first DCI using the first CCE format based on the first information.

[0064] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0065] In one alternative implementation, the quantity is an integer not equal to 6.

[0066] In an optional implementation, the communication unit is further configured to receive second information sent by the network device, the second information being configured to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format;

[0067] The detection unit is further configured to detect the first DCI using the second CCE format based on the second information.

[0068] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0069] In one alternative implementation, the communication unit is specifically configured to receive the first information sent by the network device in a first search space set;

[0070] The detection unit is specifically used to: detect the first DCI in the first search space set using the first CCE format; or...

[0071] Determine a first control resource set associated with the first search space set, and detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the at least one search space set includes the first search space set; or...

[0072] All search space sets configured on the serving cell where the first search space set is located use the first CCE format to detect the first DCI, and all search space sets configured on the serving cell include the first search space set.

[0073] In one alternative implementation, the first information is carried via a second DCI.

[0074] In one optional implementation, the first information further includes the cell identifier of the serving cell;

[0075] The detection unit is specifically used to detect the first DCI using the first CCE format on all search space sets configured on the serving cell.

[0076] In one optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first control resource set;

[0077] The detection unit is specifically used to detect the first DCI in at least one search space set mapped to the first control resource set using the first CCE format, wherein the first control resource set is the control resource set configured on the serving cell.

[0078] In one optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first search space set;

[0079] The detection unit is specifically used to detect the first DCI using the first CCE format in the first search space set configured on the serving cell.

[0080] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0081] In one alternative embodiment, the device further includes:

[0082] Measurement unit for performing signal measurements on at least one first communication system cell;

[0083] The communication unit is also used to send the measured reference signal received power (RSRP) of the at least one first communication system cell to the network device.

[0084] In an optional implementation, the communication unit is further configured to receive indication information sent by the network device, the indication information being used to instruct the terminal device to report the measured RSRP of the first communication system cell to the network device;

[0085] The measurement unit is specifically used to perform signal measurements on the at least one first communication system cell according to the indication information;

[0086] The communication unit is specifically used to send the measured RSRP of the at least one first communication system cell to the network device through the physical layer.

[0087] In one alternative embodiment, the device further includes:

[0088] Measurement unit for performing channel measurements on at least one beam;

[0089] The communication unit is also used to send the measured channel state information of the at least one beam to the network device.

[0090] Fourthly, embodiments of this application provide a communication device applied in a network device, the communication device comprising:

[0091] The determining unit is used to adjust the detection parameters of the downlink control information of the terminal device;

[0092] A communication unit is configured to send first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format.

[0093] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0094] In one alternative implementation, the quantity is an integer not equal to 6.

[0095] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0096] In one alternative implementation, the first information is carried via a second DCI.

[0097] In one optional implementation, the first information may further include the cell identifier of the serving cell; or, the first information may further include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may further include the cell identifier of the serving cell and the identifier of the first search space set.

[0098] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0099] In an optional implementation, the communication unit is further configured to receive at least one RSRP of a first communication system cell sent by the terminal device;

[0100] The determining unit is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the RSRP of the at least one first communication system cell.

[0101] In one optional implementation, the communication unit is further configured to receive channel state information of at least one beam transmitted by the terminal device.

[0102] The determining unit is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the channel state information of the at least one beam.

[0103] In one optional implementation, the determining unit is specifically used for:

[0104] Determine the detection parameters for adjusting some or all of the downlink control information of at least one serving cell in which the terminal device is located, or...

[0105] Determine the detection parameters for adjusting the downlink control information of part or all of the control resource set of the serving cell where the terminal device is located, or...

[0106] Determine the detection parameters for adjusting some or all of the search space set of the serving cell where the terminal device is located.

[0107] In an optional implementation, the determining unit is further configured to determine that the terminal device is not subject to signal interference from neighboring cells;

[0108] The communication unit is also used to send second information to the network device, the second information being used to instruct the terminal device to detect the first DCI using a second CCE format.

[0109] Fifthly, embodiments of this application provide a communication device including a processor and a memory interconnected thereto. The memory stores a computer program, which includes program instructions. The processor is configured to invoke the program instructions to perform the method described in the first or second aspect.

[0110] In a sixth aspect, embodiments of this application provide a chip including a processor and an interface, the processor and the interface being coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions to perform the methods described in the first or second aspect.

[0111] In a seventh aspect, embodiments of this application provide a module device, characterized in that the module device includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used to provide electrical energy to the module device; the storage module is used to store data and instructions; the communication module is used to perform internal communication within the module device, or to enable communication between the module device and external devices; and the chip module is used to execute the method described in the first or second aspect.

[0112] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a processor, cause the processor to perform the method as described in the first or second aspect. Attached Figure Description

[0113] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0114] Figure 1 This is a schematic diagram of the structure of a communication system provided in an embodiment of this application;

[0115] Figure 2 This is a flowchart illustrating a downlink control information detection method provided in an embodiment of this application;

[0116] Figure 3a This is the RE Pattern diagram of a single antenna port provided in the embodiments of this application;

[0117] Figure 3b This is a RE Pattern diagram of two antenna ports provided in an embodiment of this application;

[0118] Figure 3c This is the RE Pattern diagram of the four antenna ports provided in the embodiments of this application;

[0119] Figure 4 This is a flowchart illustrating another downlink control information detection method provided in an embodiment of this application;

[0120] Figure 5 This is a flowchart illustrating another downlink control information detection method provided in the embodiments of this application;

[0121] Figure 6 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0122] Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0123] Figure 8 This is a schematic diagram of the structure of another communication device provided in the embodiments of this application;

[0124] Figure 9 This is a schematic diagram of the structure of a module device provided in an embodiment of this application. Detailed Implementation

[0125] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0126] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0127] It should be understood that in this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document indicates that the preceding and following related objects have an "or" relationship.

[0128] It should be understood that in this article, "multiple" refers to two or more.

[0129] It should be understood that the use of terms such as "first" and "second" in this document is for illustrative purposes only and to distinguish the objects being described. There is no order to these terms, nor do they indicate any particular limitation on the number of devices in the embodiments of this application, and they do not constitute any limitation on the embodiments of this application.

[0130] It should be understood that in this article, a one-way communication link from a network device to a terminal device is defined as a downlink, the channel or signal transmitted on the downlink is called a downlink channel or signal, and the transmission direction of the downlink channel or signal is called the downlink direction; while a one-way communication link from a terminal device to a network device is defined as an uplink, the channel or signal transmitted on the uplink is called an uplink channel or signal, and the transmission direction of the uplink channel or signal is called the uplink direction.

[0131] The technical solution of this application can be applied to third-generation (3G) mobile communication systems, fourth-generation (4G) mobile communication systems, fifth-generation (5G) mobile communication systems, also known as New Radio (NR) systems, or sixth-generation (6G) mobile communication systems or other future communication systems.

[0132] The technical solution of this application is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, and vehicle-to-everything communication architecture.

[0133] In this application embodiment, terminal equipment can refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent, or user device. Terminal equipment can also be cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal equipment in 5G network, or terminal equipment in future evolved public land mobile network (PLMN), etc., and this application embodiment does not limit it in this way.

[0134] In this embodiment, the network device may be a device with wireless transceiver functionality or a chip that can be configured in the device. The network device includes, but is not limited to: evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home network device (e.g., home evolved node B, or home node B, HNB), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission and reception point (TRP or transmission point, TP), etc. It can also be a device used in 4G, 5G, 6G, etc., etc., without limitation.

[0135] Please see Figure 1 , Figure 1 This is a schematic diagram of a communication system provided in an embodiment of this application. The communication system may include, but is not limited to, one or more network devices and one or more terminal devices, such as... Figure 1 Taking a network device 101 and a terminal device 102 as an example, where, Figure 1 In this example, network device 101 is a base station, and terminal device 102 is a mobile phone. Terminal device 102 can establish a wireless link with network device 101 for communication. Figure 1 The communication system shown includes, but is not limited to, network equipment and terminal equipment, and may also include other communication equipment. Figure 1 The number and form of the devices shown are for illustrative purposes and do not constitute a limitation on the embodiments of this application.

[0136] In such Figure 1 In the communication system shown, when the network device determines that the terminal device is interfered with by at least one neighboring cell, it sends first information to the terminal device. The first information is used to instruct the terminal device to detect the first DCI using a first CCE format. The terminal device receives the first information and detects the first DCI using the first CCE format according to the first information. By implementing this application, when the terminal device is interfered with by at least one neighboring cell, the CCE format used by the terminal device to detect the DCI can be adjusted in a timely and flexible manner.

[0137] Please see Figure 2 , Figure 2This is a flowchart illustrating a downlink control information detection method provided in an embodiment of this application. This downlink control information detection method can be applied to, for example... Figure 1 The communication system shown is described from the perspective of the interaction between network devices and terminal devices. The downlink control information detection method includes steps S201-S204, which are described below:

[0138] S201, The network device determines the detection parameters for adjusting the downlink control information of the terminal device;

[0139] S202, the network device sends first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format;

[0140] In this embodiment, the DCI is carried on the Physical Downlink Control Channel (PDCCH). In the current PDCCH detection configuration, the network device configures the search space set for the terminal device to detect the PDCCH according to the CORESET. For example, on a serving cell, the network device can configure 3 CORESETs for the terminal device, and 10 search space sets can be configured on these 3 CORESETs. The terminal device detects the PDCCH according to its own Radio Network Temporary Identifier (RNTI) and the configured search space set, i.e., detects its own DCI, and then receives or uploads data based on the DCI.

[0141] CORESET indicates the frequency domain resource location of a resource block and the length of OFDM symbols it occupies in the time domain. Search space sets indicate the time domain location information of the resource block. For example, a search space set defines the period, slot location, and start symbol location in the time domain. As described above, CORESET and search space sets together define the time domain and frequency domain information of the resources occupied by the resource block. A CORESET can be associated with at least one search space set, which can be considered as at least one search space set mapped to that CORESET. When a terminal device detects a PDCCH according to the configured search space set, it detects the PDCCH in at least one search space set associated with the configured at least one CORESET, i.e., it detects its own DCI.

[0142] A DCI corresponds to a PDCCH which is carried and transmitted by at least one CCE. The number of CCEs constituting a DCI is called the aggregation level, which can be 1, 2, 4, 8, or 16. In the standard CCE format, a CCE can be composed of 6 Resource Element Groups (REGs). Each REG refers to a Resource Block (RB) that occupies one OFDM symbol duration. That is, each REG contains 12 consecutive Resource Elements (REs) in the frequency domain. Among the 12 REs, there is a Demodulation Reference Signal (DMRS). The DMRS can be fixed on certain specific subcarriers in an RB. For example, the DMRS is on subcarriers 1, 5, and 9 of an RB. The actual number of REs effectively used for DCI transmission in each REG is less than 12, for example, 9. Thus, a CCE has 6 × 9 = 54 REs used for DCI transmission. This application refers to the standard CCE format as the second CCE format, which is a CCE format in which a CCE contains 6 REGs and the DMRS occupies certain specific REs in the REGs.

[0143] When the terminal device detects DCI according to the configured search space set, it needs to perform the detection according to the corresponding CCE format. That is, it needs to perform the detection according to the number of REGs contained in a CCE, the distribution of DMRS in the REG, and whether there are REs that need to be excluded in the REG.

[0144] In this embodiment, the serving cell of the terminal device can be a second communication system cell, and the terminal device may be subject to signal interference from neighboring cells of the first communication system. For example, the second communication system is an NR system, and the first communication system is a Long Term Evolution (LTE) system. NR may be deployed in the same frequency band as LTE, or the frequency band deployed by NR may overlap with the frequency band deployed by LTE. For the LTE system, each downlink subframe (1ms duration) transmits a cell-specific reference signal (CRS), and the REs transmitting CRS on a physical resource block depend on the number of antenna ports.

[0145] The following is combined with Figures 3a-3b To illustrate the position of REs (Resources) occupied by CRS (Cyclic Stream Response) transmission on a physical resource block in an LTE system, an example is given. A small square can be considered a RE, and a vertical column containing 12 REs can be referred to as a REG (Resource Group). For example... Figure 3aThe diagram shows the REs used for CRS transmission when configuring an antenna port for an LTE cell. The small square labeled R0 represents the REs used by antenna port R0 to transmit CRS. Figure 3b The diagram shows the RE occupied by CRS when configuring two antenna ports for a certain LTE cell. Figure 3b As shown, the small square labeled R0 represents the RE occupied by antenna port R0 transmitting CRS, and the small square labeled R1 represents the RE occupied by antenna port R1 transmitting CRS. Figure 3c The diagram shows the RE occupied by CRS when configuring four antenna ports for a certain LTE cell. Figure 3c As shown, the small square labeled R0 is a schematic diagram of the RE occupied by the CRS transmission of antenna port R0, the small square labeled R1 is a schematic diagram of the RE occupied by the CRS transmission of antenna port R1, the small square labeled R2 is a schematic diagram of the RE occupied by the CRS transmission of antenna port R2, and the small square labeled R3 is a schematic diagram of the RE occupied by the CRS transmission of antenna port R3.

[0146] When LTE cells exist in the frequency band deployed by NR, the CRS transmitted by the LTE cells will cause serious interference to the PDCCH in NR, that is, it will interfere with the DCI transmitted by the terminal equipment in the NR cell. Therefore, the REs that transmit the CRS of the LTE cell in a REG cannot be used to transmit DCI, resulting in a significant reduction in the number of REs that can be used to transmit DCI of the NR cell in a REG. The reduction depends on the number of LTE cells that cause interference and the number of antenna ports used by the LTE cells.

[0147] In this embodiment, the network device determines the detection parameters for adjusting the downlink control information of the terminal device. These detection parameters include the CCE format used to detect the downlink control information. Optionally, the network device may determine the detection parameters for adjusting the downlink control information of the terminal device when it determines that the terminal device is being interfered with by at least one neighboring cell. For example, the network device receives the RSRP of at least one first communication system cell sent by the terminal device, and based on the RSRP of the at least one first communication system cell, determines that the terminal device is being interfered with by the signal of at least one neighboring cell. If the RSRP of the at least one neighboring cell meets a preset threshold, the network device then determines the detection parameters for adjusting the downlink control information of the terminal device. Alternatively, the network device receives channel state information of at least one beam sent by the terminal device, and based on the channel state information of the at least one beam, determines that the terminal device is being interfered with by the signal of at least one neighboring cell, and then determines the detection parameters for adjusting the downlink control information of the terminal device.

[0148] The network device can determine, based on the actual interference experienced by the terminal device, to adjust the detection parameters of downlink control information for some or all of the serving cells in at least one serving cell where the terminal device is located. For example, the terminal device may be operating in carrier aggregation mode; if the carriers of some serving cells are interfered with, only the detection parameters of downlink control information in those serving cells need to be adjusted. Alternatively, the network device can determine, based on the actual interference experienced by the terminal device, to adjust the detection parameters of downlink control information for some or all of the search space sets in the serving cell where the terminal device is located. For example, if the frequency band corresponding to a part of the search space set is interfered with, the detection parameters of downlink control information for that part of the search space set are adjusted. Or, the network device can determine, based on the actual interference experienced by the terminal device, to adjust the detection parameters of downlink control information for some or all of the control resource sets in the serving cell where the terminal device is located. For example, if the frequency band corresponding to a part of the control resource set is interfered with, the detection parameters of downlink control information for that part of the control resource set are adjusted.

[0149] The network equipment described in this application can flexibly adjust the detection parameters of downlink control information of the interfered serving cell, or a portion of the search space set or a portion of the control resource set in the interfered serving cell, based on the actual interference situation experienced by the terminal equipment, thereby reducing the processing complexity of the terminal equipment.

[0150] For example, when a network device determines that a terminal device is interfered with by at least one neighboring cell, the network device determines that the detection parameters of the downlink control information of the terminal device need to be adjusted. Specifically, this can be done by dynamically adjusting the CCE format of the terminal device based on the interference situation. For instance, the network device may use a new CCE format to schedule the terminal device, which can be referred to as the first CCE format. The network device will also instruct the terminal device to use the first CCE format to detect DCI in at least one configured search space. It should be noted that, in this application, when the terminal device is interfered with by at least one neighboring cell, the network device instructs the terminal device to use the first CCE format to detect DCI, which may mean that when the interference from the at least one neighboring cell is relatively strong, the network device instructs the terminal device to use the first CCE format to detect DCI. For ease of description, this application refers to the DCI detected by the terminal device using the first CCE format as the first DCI.

[0151] The first CCE format may include one or more of the following: the number of REGs contained in a single CCE, the distribution of the demodulation reference signal DMRS in the REG (which can also be considered as the distribution of DMRS in the CCE), or the distribution of at least one resource element RE to be excluded in the REG (i.e., the Puncture RE Pattern) (which can also be considered as the distribution of at least one resource element RE to be excluded in the CORESET). The number of REGs contained in the CCE of the first CCE format may be an integer not equal to 6; for example, a CCE of the first CCE format may include 8, 10, or 12 REGs.

[0152] The distribution of DMRS in REG can refer to whether the REs occupied by DMRS in REG in the first CCE format are offset relative to the REs occupied by DMRS in CCE in the second CCE format (i.e., standard CCE format). If there is an offset, the offset can be explicitly indicated or implicitly indicated. An explicit indication can directly indicate an offset of 1 or -2. An implicit indication can be inferred by the terminal device based on the Puncture RE Pattern. For example, indicating the cell parameters of the first communication system cell, the terminal device determines the Puncture RE Pattern based on the cell parameters and infers the distribution of DMRS in REG based on the Puncture RE Pattern.

[0153] The distribution of at least one RE that needs to be excluded in the REG can refer to at least one RE occupied by at least one neighboring cell transmitting CRS that is causing the interference. For example, a terminal device is interfered with by a neighboring cell, which is configured with an antenna port, such as... Figure 3a As shown, REs marked as R0 in a REG are REs that need to be excluded.

[0154] The network device can explicitly indicate which REs need to be excluded, such as excluding the 4th and 5th REs out of 12 consecutive REs. Alternatively, the network device can configure parameters of the first communication system cell (LTE cell), such as the cell's CRS distribution. The terminal device then infers the distribution of REs to be excluded based on the CRS distribution of the interfering first communication system cell. There can be one or more first communication system cells causing the interference. In a special scenario, if the number of interfering first communication system cells is large, some REGs (Regional Groups) need to be completely excluded. REs to be excluded within a REG include scenarios where the entire REG cannot be used for downlink control information transmission.

[0155] It is understandable that as the terminal device moves, the first communication system cell that the terminal device is interfered with will change. For example, it may change from cell 1 to cell 2, or from cell 1 to cell 1 and cell 2, or from cell 1 and cell 2 to cell 1 and cell 3, etc. When the first communication system cell that the terminal device is interfered with changes, the network device may use different CCE formats to schedule the terminal device. Of course, the network device needs to notify the terminal device to adjust the CCE format in time to detect the first DCI.

[0156] The network device can instruct the terminal device to detect the first DCI using a first CCE format via first information. For example, the network device sends first information to the terminal device, which instructs the terminal device to detect the first DCI using the first CCE format. Optionally, the first information may include specific information about the first CCE format. For example, the first information may include one or more of the following: the number of REGs contained in a single CCE of the first CCE format, the distribution of DMRS in the REGs, or the distribution of at least one RE that needs to be excluded from the REGs. Optionally, the first information may also include an index value corresponding to the first CCE format, and the terminal device determines the corresponding first CCE format based on the index value.

[0157] Optionally, the first information may be transmitted via a second DCI, meaning the second DCI includes the first information. Alternatively, the first information may be transmitted via a Medium Access Control (MAC) control element (CE). If the first information is transmitted via a MAC CE, in addition to including the index value corresponding to the first CCE format or specific information of the first CCE format, the first information may also include the cell identifier of the serving cell, which may refer to a cell index; or, the first information may also include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may also include the cell identifier of the serving cell and the identifier of the first search space set.

[0158] Network devices can be configured to detect the first CCE format of the first DCI according to CORESET or search space set. Alternatively, network devices can be configured to detect the first CCE format of the first DCI in all search space sets of the serving cell.

[0159] In some optional implementations, the network device may also send a second message to the terminal device, which is used to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using a second CCE format; wherein, the second CCE format may be a standard CCE format, wherein the CCE of the second CCE format includes 6 REGs, or the second CCE format may be different from the first CCE format.

[0160] Optionally, when the second CCE format is a standard CCE format, the network device may send the second information to the terminal device when it determines that the terminal device is not interfered with by the first communication system cell.

[0161] S203, The terminal device receives the first information sent by the network device;

[0162] S204, The terminal device detects the first DCI using the first CCE format based on the first information.

[0163] In this embodiment of the application, if the UE receives the CCE format indicated by the base station through MAC CE in a certain time slot n, considering the UE's processing delay, the UE uses a new CCE format (i.e., the first CCE format) to detect the first DCI in time slot n+k, where k is an integer greater than or equal to 1.

[0164] In this embodiment, the terminal device receives first information sent by the network device and detects the first DCI using the first CCE format indicated by the network device based on the first information. Optionally, the terminal device may detect the first DCI using the first CCE format indicated by the network device after a period of time has elapsed since receiving the first information sent by the network device. The duration of this period of time may be determined based on the processing time of the terminal device.

[0165] Optionally, the first information can be transmitted via a second DCI bearer or via a MAC CE bearer. If the first information is transmitted via a second DCI bearer, this application refers to the search space set in which the terminal device receives the second DCI as the first search space set, that is, the terminal device receives the first information sent by the network device in the first search space set.

[0166] In one optional implementation, the first information is transmitted via a second DCI. The terminal device receives the first information sent by the network device from a first search space set. The terminal device can detect the first DCI using the first CCE format in the first search space set, while using a standard CCE format (i.e., the second CCE format) in other search space sets. Alternatively, the terminal device determines a first control resource set associated with the first search space set and detects the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, where the at least one search space set includes the first search space set, while using a standard CCE format (i.e., the second CCE format) in other search space sets. Or, all search space sets configured on the serving cell where the first search space set is located detect the first DCI using the first CCE format, where all search space sets configured on the serving cell include the first search space set. The specific method used by the terminal device to detect the first DCI can be specified by a protocol or determined through interaction between the network device and the terminal device. The network device can quickly adjust the terminal device to use the first CCE format to detect the first DCI via the DCI. As the terminal devices move, the CCE format used by the terminal device to detect the first DCI can be continuously updated.

[0167] In another optional implementation, the first information is transmitted via a MAC CE. If the first information includes the cell identifier of the serving cell but not the identifier of the CORESET or the identifier of the search space set, the terminal device detects the first DCI using the first CCE format for all search space sets configured on the serving cell. If the first information includes the cell identifier of the serving cell and the identifier of the first control resource set but not the identifier of the search space set, at least one search space set mapped to the first control resource set is determined, and the first DCI is detected using the first CCE format on the at least one search space set, where the first search space set is the search space set configured on the serving cell. If the first information includes the cell identifier of the serving cell and the identifier of the first search space set, the first DCI is detected using the first CCE format on the first search space set configured on the serving cell.

[0168] Optionally, if the terminal device receives second information sent by the network device, the second information being used to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format, then the terminal device detects the first DCI using the second CCE format according to the second information.

[0169] Optionally, the second information can also be transmitted via DCI or MAC CE. If the second information is transmitted via DCI, the terminal device receives the second information in a certain search space set. This can be achieved by detecting the first DCI using the second CCE format in that search space set, or by detecting the first DCI using the second CCE format in all search space sets configured in the serving cell, or by determining the control resource set associated with that search space set and detecting the first DCI using the second CCE format in all search space sets mapped to that control resource set. If the second information is carried by a MAC CE, and if the MAC CE includes the identifier of the serving cell but not the identifier of the search space set or the identifier of the control resource set, then the terminal device uses the second CCE format to detect the first DCI in all search space sets of the serving cell; if the MAC CE includes both the identifier of the serving cell and the identifier of the search space set, then the terminal device uses the second CCE format to detect the first DCI in that search space; if the MAC CE includes both the identifier of the serving cell and the identifier of the control resource set, then the terminal device uses the second CCE format to detect the first DCI in at least one search space set associated with that control resource set.

[0170] In this embodiment, when the network device determines that the terminal device is interfered with by at least one neighboring cell, it sends first information to the terminal device to instruct the terminal device to use a first CCE format to detect the first DCI. The terminal device uses the first CCE format to detect the first DCI according to the first information. By using the first information, the network device can flexibly instruct the terminal device to use the CCE format to detect the DCI, thereby improving the success rate of DCI detection.

[0171] Please see Figure 4 , Figure 4 This is a flowchart illustrating another downlink control information detection method provided in an embodiment of this application. This downlink control information detection method can be applied to, for example... Figure 1 The communication system shown is described from the perspective of interaction between network devices and terminal devices. The downlink control information detection method includes steps S401-S407, which are described below:

[0172] S401, The terminal device performs signal measurement on at least one first communication system cell;

[0173] S402, The terminal device sends the RSRP of at least one first communication system cell obtained from the measurement to the network device;

[0174] In this embodiment, the terminal device can perform signal measurement on at least one first communication system cell. The serving cell of the terminal device can be a second communication system cell, and the at least one first communication system cell can be a neighboring cell of the terminal device. The first communication system can be an LTE system, and the second communication system can be an NR system.

[0175] The terminal device can send the measured RSRP of at least one first communication system cell to the network device. Optionally, the terminal device can also send the cell identifier of the at least one first communication system cell to the network device. The terminal device can report the RSRP of the at least one first communication system cell through the physical layer.

[0176] Optionally, the network device can configure a terminal device to perform signal measurements on at least one first communication system cell, and the terminal device performs signal measurements on at least one first communication system cell according to the configuration of the network device. For example, the network device sends indication information to the terminal device, which instructs the terminal device to report the measured RSRP of the first communication system cell to the network device. The terminal device performs signal measurements on at least one first communication system cell according to the indication information and sends the measured RSRP of at least one first communication system cell to the network device through the physical layer.

[0177] Optionally, the network device can also be configured to configure the terminal device to report the RSRP of the first communication system cell at the physical layer, such as Physical Uplink Control Channel (PUCCH) resources or PUSCH resources. The network device can be configured with periodic time-frequency resources to allow the terminal device to periodically report the RSRP of the first communication system cell. It is understood that the terminal device may also choose not to periodically report the RSRP of the first communication system cell.

[0178] In some implementations, in order to reduce the amount of signaling required for the terminal device to report the RSRP of the first communication system cell, the terminal device may only report the RSRP of the first communication system cell when a change is measured in the first communication system cell.

[0179] The following example uses an LTE cell as the first communication system cell. For instance, the terminal device initially reports the RSRP of LTE Cell 1 and the RSRP of LTE Cell 2. Optionally, the terminal device can report only when the measured RSRP meets a certain threshold. After a period of time, if the LTE cells measured by the terminal device are still these two LTE cells, even if their RSRPs have changed, the terminal device will not report them to reduce power overhead. After another period of time, for example, as the terminal device moves, it discovers that the LTE cells have changed, such as becoming LTE Cell 1 and LTE Cell 3, or only LTE Cell 1. At this time, the terminal device needs to report the RSRP of the currently measured LTE cells, such as reporting the RSRP of Cell 1 and the RSRP of Cell 3, or only reporting the RSRP of LTE Cell 1. After receiving the RSRP of the LTE cells reported by the terminal device, the network device promptly adjusts the CCE format of the terminal device's detection of the first DCI.

[0180] Optionally, the terminal device may also report the measured RSRP of at least one first communication system cell to the network device when the change in the measured RSRP of the first communication system cell exceeds a certain threshold. For example, if the terminal device initially reports the RSRP of LTE Cell1 and the RSRP of LTE Cell2, and as the terminal device moves, the measured RSRP of LTE Cell1 decreases and the change exceeds a certain threshold, it indicates that the terminal device is moving further away from LTE Cell1 and may need to readjust the CCE format of the terminal device. Therefore, the terminal device may report the measured RSRP of at least one first communication system cell, that is, re-report the RSRP of LTE Cell1 and the RSRP of LTE Cell2.

[0181] S403, The network device receives at least one RSRP of a first communication system cell sent by the terminal device;

[0182] S404, The network device determines the detection parameters for adjusting the downlink control information of the terminal device based on the RSRP of at least one first communication system cell;

[0183] In this embodiment, after receiving the RSRP of at least one first communication system cell sent by the terminal device, the network device can determine that the terminal device is experiencing signal interference from at least one neighboring cell based on the RSRP of the at least one first communication system cell, and then determine the detection parameters for adjusting the downlink control information of the terminal device. For example, one or more first communication system cells whose RSRP meets a preset threshold can be identified as at least one neighboring cell where the terminal device is experiencing interference. For instance, one or more first communication system cells whose RSRP is greater than a certain threshold can be identified as at least one neighboring cell where the terminal device is experiencing interference.

[0184] The network device can determine a first CCE format based on the number of antenna ports of the at least one neighboring cell and the number of cells in the at least one neighboring cell. Specific information about the first CCE format includes one or more of the following: the number of Resource Element Groups (REGs) contained in a single CCE, the distribution of the Demodulation Reference Signal (DMRS) in the REGs, or the distribution of at least one Resource Element (RE) that needs to be excluded from the REGs. The at least one RE that needs to be excluded is the RE where the at least one neighboring cell transmits its CRS.

[0185] In some implementations, the network device, based on network coverage and measurement reports received from various terminal devices, can determine the first communication system cells in its serving cell where terminal devices may be subject to interference. The network device can then determine various CCE formats based on these first system cells and send the various CCE formats and their corresponding index values ​​to the terminal devices. For example, the CCE formats may be as follows:

[0186] Format 1 (corresponding index value Index is 00), RE distribution 1 that needs to be excluded from the REG that constitutes CCE, CCE consists of 8 REGs, and the distribution of DMRS in REG 1;

[0187] Format 2 (corresponding index value Index is 01), RE distribution 2 that needs to be excluded from the REG that constitutes CCE, CCE consists of 10 REGs, distribution 2 of DMRS in REG;

[0188] Format 3 (corresponding index value Index is 10), RE distribution that needs to be excluded from the REG that constitutes CCE; CCE consists of 8 REGs, and the distribution of DMRS in the REGs;

[0189] Format 4 (corresponding to index value Index 11) The RE distribution that needs to be excluded from the REG that constitutes the CCE is 4. The CCE consists of 6 REGs, which is consistent with the standard CCE format and does not need to be indicated. The RE distribution occupied by DMRS in the REG is consistent with the standard CCE format and does not need to be indicated.

[0190] The terminal device receives the various CCE formats and their corresponding index values, and stores the CCE format corresponding to each index value. Since the network device cannot determine the actual interference experienced by the terminal device at different times in real time, the network device configures the terminal device to report the RSRP of the first communication system cell through the physical layer. After the network device determines at least one neighboring cell under interference based on the RSRP of at least one first communication system cell reported by the terminal device, it determines the corresponding first CCE format and notifies the terminal device of the first CCE format through the index value. For example, the network device can pre-store the CCE formats corresponding to neighboring cell 1 and neighboring cell 2, and the CCE format corresponding to neighboring cell 3. When the RSRP of neighboring cell 3 reported by the terminal device meets a preset threshold, the CCE format corresponding to neighboring cell 3 is used as the first CCE format, and the index value corresponding to the first CCE format is sent to the terminal device. It is understandable that the network device can also send the specific information of the first CCE format to the terminal device.

[0191] In some optional implementations, the network device identifies various first communication system cells within the serving cell that may cause interference to the terminal device. The network device can determine various CCE formats based on these first system cells and send the cell identifiers of each first communication system cell or the CCE formats corresponding to combinations of first communication system cells to the terminal device. The combination of first communication system cells includes at least two first communication system cells, meaning the terminal device is affected by interference from these at least two cells. When the terminal device measures the signal of each first communication system cell, if the RSRP of one or more first communication system cells is greater than a preset threshold, it searches for the CCE format corresponding to those one or more first communication system cells and uses it as the first CCE format. The terminal device sends a notification message to the network device indicating that it is affected by interference from those one or more first communication system cells and needs to switch CCE formats. Alternatively, it can send the index value corresponding to the switched first CCE format to the network device, or send the cell identifiers of the one or more first communication system cells to the network device. The network device then automatically determines the corresponding first CCE format and uses that first CCE format to schedule the terminal device.

[0192] Specifically, taking the network device as the base station and the terminal device (User Equipment, UE) as an example, the UE accesses the serving cell and establishes an RRC connection. During initial access, the base station schedules the UE using the standard CCE format (i.e., the second CCE format), which contains six REGs. During the UE's network access process, the base station assigns the UE a Cell Radio Network Temporary Identifier (C-RNTI). The UE parses the DCI scrambled by the C-RNTI to obtain the base station's scheduling information.

[0193] The base station configures the UE to measure the RSRP of an LTE cell and report the measured RSRP of at least one LTE cell to the network. For example, the base station configures the UE to report the time and frequency resources of an LTE cell. According to the base station's measurement configuration, the UE measures the RSRP of at least one LTE cell with different interference, and the UE reports the RSRP of the LTE cell with different interference through the physical layer.

[0194] The base station determines at least one neighboring cell causing interference based on the RSRP of at least one LTE cell reported, and determines the corresponding first CCE format. The base station can instruct the UE to detect the CCE format of the first DCI through the second DCI. For example, if the index in the DCI is 00, then when it corresponds to the above format 1, the UE determines the distribution of REs that need to be excluded in the CCE, the number of REGs in a single CCE, the distribution of DMRS in REGs, etc., based on the index. The UE then detects the first DCI according to format 1.

[0195] As the UE moves, the interference of the measured LTE cells varies. Therefore, the UE reports the RSRP of different LTE cells through the physical layer. The base station can quickly adjust the CCE format, enabling the network to respond to LTE cell interference in a timely manner, carry out communication smoothly, and improve system performance.

[0196] S405, the network device sends first information to the terminal device, the first information being used to instruct the terminal device to detect the first downlink control information (DCI) using the first control channel unit (CCE) format;

[0197] S406, The terminal device receives the first information sent by the network device;

[0198] S407, The terminal device detects the first DCI using the first CCE format based on the first information.

[0199] Please refer to steps S405-S407 in the embodiments of this application. Figure 2 Steps S202-S204 of the embodiment will not be repeated here.

[0200] In this embodiment of the application, the network device can be configured to report the RSRP of the first communication system cell through the physical layer of the terminal device, and then determine the corresponding CCE format based on the number of first communication system cells and the number of antenna ports that the terminal device is interfered with, and adjust the CCE format used by the terminal device to detect DCI during the movement of the terminal device in a timely manner.

[0201] Please see Figure 5 , Figure 5 This is a flowchart illustrating another downlink control information detection method provided in this application embodiment. This downlink control information detection method can be applied to, for example... Figure 1 The communication system shown is described from the perspective of the interaction between network devices and terminal devices. The downlink control information detection method includes steps S501-S507, which are described below:

[0202] S501, The terminal device performs channel measurement on at least one beam;

[0203] S502, the terminal device sends the channel state information of at least one beam obtained from measurement to the network device;

[0204] In this embodiment, the terminal device can perform channel measurement on at least one beam. The serving cell of the terminal device can be a second communication system cell. A second communication system cell is typically composed of multiple beams, such as four or eight beams. Each beam covers a different area, and the area covered by each beam may be adjacent to different first communication system cells. Therefore, when the terminal device changes its serving beam, it may be subject to interference from different first communication system cells, and may need to apply different CCE formats to detect the first DCI.

[0205] The terminal device performs channel measurement on at least one beam and sends the measured channel state information of at least one beam to the network device. The channel state information may be values ​​such as RSRP, Channel Quality Indication (CQI), and RSRQ.

[0206] S503, The network device receives channel state information of at least one beam sent by the terminal device;

[0207] S504, The network device adjusts the detection parameters of the downlink control information of the terminal device based on the channel state information of at least one beam;

[0208] In this embodiment, after receiving channel state information of at least one beam from a terminal device, the network device can determine signal interference from at least one neighboring cell based on the channel state information of the at least one beam, and then determine the detection parameters for adjusting the downlink control information of the terminal device. These detection parameters can be the CCE format used by the terminal device to detect the downlink control information. Specifically, optionally, the beam with the largest RSRP among the at least one beams is obtained, and at least one first communication system cell interfering with that beam is identified as at least one neighboring cell where the terminal device is interfered with.

[0209] Furthermore, the network device can determine the corresponding first CCE format based on the number of cells in the at least one neighboring cell and the number of antenna ports in each neighboring cell.

[0210] Based on the actual network deployment and the measurement reports reported by each terminal device, network equipment can anticipate the interference experienced by each beam from the primary communication system cell. For example, beam SSB0 is interfered with by one primary communication system cell, such as LTE Cell1, with 2 antenna ports. Beam SSB1 is interfered with by two primary communication system cells, such as LTE Cell2 and Cell3, each with 4 antenna ports. Beam SSB2 is interfered with by one primary communication system cell, such as LTE Cell4, with 4 antenna ports. Beam SSB3 is not interfered with by any primary communication system cell.

[0211] Based on the interference experienced by each beam from the first communication system cell, the network equipment can predetermine the CCE format corresponding to each beam. For example, for beam SSB0, if the number of UEs to be excluded is not large, based on the number of first communication system cells affected by interference and the number of antenna ports in each first communication system cell, the network equipment configures the CCE format corresponding to SSB0 as follows: one CCE consists of 8 REGs, DMRS does not require offset, and the CCE format corresponding to this SSB0 is used as the first format, with an index value of 00. For beam SSB1, the number of REs to be excluded is relatively large based on the number of interfered first communication system cells and the number of antenna ports in each first communication system cell. The network equipment is configured with the following CCE format for SSB1: one CCE consists of 12 REGs, and DMRS needs to be offset by 2. This CCE format for SSB1 is used as the second format, and the index value can be 0 or 1. For beam SSB2, the number of REs to be excluded is moderate based on the number of interfered first communication system cells and the number of antenna ports in each first communication system cell. The network equipment is configured with the following CCE format for SSB2: one CCE consists of 10 REGs, and DMRS needs to be offset by 1. This CCE format for SSB1 is used as the third format, and the index value can be 10. For beam SSB3, since it is not interfered with by the first communication system cells, the standard CCE format (second CCE format) can be used to detect the first DCI. This standard CCE format may not be indicated, or may be indicated by the index value 11; this application does not limit this.

[0212] Network devices can send various new CCE formats and their corresponding index values ​​to terminal devices via RRC signaling. The terminal device receives these CCE formats and their corresponding index values, and stores the CCE format corresponding to each index value. The network device can subsequently indicate the determined first CCE format to the terminal device using the index value. It is understandable that the network device can also send specific information about this first CCE format to the terminal device.

[0213] Specifically, when the network device determines the beam in which the terminal device is located based on the channel state information of at least one beam reported by the terminal device, it can determine the CCE format corresponding to the beam as the first CCE format and indicate the first beam to the terminal device through the first information.

[0214] Specifically, taking the network device as the base station and the terminal device (User Equipment, UE) as an example, the UE accesses the serving cell and establishes an RRC connection. The serving cell is assumed to have four beams, SSB0-SSB3. During initial access, the base station schedules the UE using the standard CCE format (i.e., the second CCE format), which contains six REGs. During the UE's network access process, the base station assigns the UE a Cell Radio Network Temporary Identifier (C-RNTI). The UE parses the DCI scrambled by the C-RNTI to obtain the base station's scheduling information.

[0215] The base station configures the UE to report measurement results for different beams. The UE performs channel measurements on at least one beam according to the base station's configuration and reports the channel state information of each beam to the base station via a measurement report. The base station detects a deterioration in the channel conditions of the UE based on the measurement reports reported by the UE, and also learns that the UE has LTE neighboring cells. After learning that the UE is experiencing interference from LTE neighboring cells in the same frequency band, the base station determines to configure a new CCE format for the UE, namely the first CCE format. Specifically, optionally, the base station determines that the UE is currently in beam SSB0 based on the channel state information of each beam reported by the UE, and can then determine the CCE format corresponding to SSB0 as the first CCE format and send the index value 00 to the UE.

[0216] After a period of time, as the UE moves, the UE reports that the RSRP of SSB1 is the highest. The base station determines the change in the UE's serving beam. At the same time, considering the interference from the new LTE cell that the UE is affected by, the base station uses the CCE format corresponding to SSB1 as the first CCE format and instructs the UE to use the newly determined first CCE format to detect the first DCI through DCI. This can be done by sending the index value 01 to the UE through DCI. The UE can then determine the specific information of the first CCE format through the index value 01.

[0217] Optionally, after receiving the DCI indicating a switch to the CCE format, the UE, after a period of time (considering the UE's processing time), uses the new first CCE format to detect the DCI sent by the base station. As the terminal device moves, the UE may continue to move within the SSB2 coverage area, causing the UE to report the highest RSRP of SSB2. The base station determines the change in the UE's serving beam. Considering the new LTE cell interference suffered by the UE, the base station uses the CCE format corresponding to SSB2 as the first CCE format and instructs the UE to use this newly determined first CCE format to detect the first DCI via the DCI. This can be done by sending an index value 10 to the UE via the DCI, and the UE uses this index value 10 to determine the specific information of the first CCE format.

[0218] When the UE moves within the coverage area of ​​SSB3, since the CCE format corresponding to SSB3 is the standard CCE format (i.e., the second CCE format), the base station can instruct the UE not to use the new CCE format (i.e., the first CCE format) to detect the first DCI through the second DCI, that is, to use the standard CCE format to detect the first DCI.

[0219] S505, the network device sends first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format;

[0220] S506, the terminal device receives the first information sent by the network device;

[0221] S507, the terminal device detects the first DCI using the first CCE format based on the first information.

[0222] Please refer to steps S505-S507 in the embodiments of this application. Figure 2 Steps S202-S204 of the embodiment will not be repeated here.

[0223] In this embodiment, the terminal device can measure the channel state of at least one beam and report the channel state information of the at least one beam to the network device. Then, based on the channel state information of each beam reported by the terminal device, the beam in which the terminal device is located is determined, thereby further determining the number of first communication system cells and the number of antenna ports that are being interfered with, thereby determining the corresponding CCE format and adjusting the CCE format used by the terminal device to detect DCI during the movement of the terminal device in a timely manner.

[0224] Figure 6 This is a schematic diagram of a communication device provided in an embodiment of this application. The device can be a terminal device, a component within a terminal device, or a device compatible with a terminal device. Figure 6 The communication device 600 shown may include a communication unit 601 and a detection unit 602. The detection unit 602 is used to detect DCI. The communication unit 601 integrates a receiving unit and a transmitting unit. The communication unit 601 may also be called a transceiver unit. Alternatively, the communication unit 601 may be split into a receiving unit and a transmitting unit. Wherein:

[0225] Communication unit 601 is used to receive first information sent by network device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using first control channel unit (CCE) format;

[0226] The detection unit 602 is used to detect the first DCI using the first CCE format based on the first information.

[0227] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0228] In one alternative implementation, the quantity is an integer not equal to 6.

[0229] In an optional implementation, the communication unit 601 is further configured to receive second information sent by the network device, the second information being configured to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format;

[0230] The detection unit 602 is further configured to detect the first DCI using the second CCE format based on the second information.

[0231] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0232] In one optional implementation, the communication unit 601 is specifically configured to receive the first information sent by the network device in the first search space set;

[0233] The detection unit 602 is specifically used to: detect the first DCI in the first search space set using the first CCE format; or...

[0234] Determine a first control resource set associated with the first search space set, and detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the at least one search space set includes the first search space set; or...

[0235] All search space sets configured on the serving cell where the first search space set is located use the first CCE format to detect the first DCI, and all search space sets configured on the serving cell include the first search space set.

[0236] In one alternative implementation, the first information is carried via a second DCI.

[0237] In one optional implementation, the first information further includes the cell identifier of the serving cell;

[0238] The detection unit 602 is specifically used to detect the first DCI using the first CCE format on all search space sets configured on the serving cell.

[0239] In one optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first control resource set;

[0240] The detection unit 602 is specifically used to detect the first DCI in at least one search space set mapped to the first control resource set using the first CCE format, wherein the first control resource set is the control resource set configured on the serving cell.

[0241] In one optional implementation, the first information further includes the cell identifier of the serving cell and the identifier of the first search space set;

[0242] The detection unit 602 is specifically used to detect the first DCI using the first CCE format in the first search space set configured on the serving cell.

[0243] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0244] In one alternative embodiment, the device further includes:

[0245] Measurement unit for performing signal measurements on at least one first communication system cell;

[0246] The communication unit 601 is also used to send the measured reference signal received power (RSRP) of the at least one first communication system cell to the network device.

[0247] In an optional implementation, the communication unit 601 is further configured to receive indication information sent by the network device, the indication information being used to instruct the terminal device to report the measured RSRP of the first communication system cell to the network device;

[0248] The measurement unit is specifically used to perform signal measurements on the at least one first communication system cell according to the indication information;

[0249] The communication unit 601 is specifically used to send the measured RSRP of the at least one first communication system cell to the network device through the physical layer.

[0250] In one alternative embodiment, the device further includes:

[0251] Measurement unit for performing channel measurements on at least one beam;

[0252] The communication unit 601 is also used to send the measured channel state information of the at least one beam to the network device.

[0253] For details regarding this implementation method, please refer to the relevant content of the above-described method embodiments. It will not be elaborated further here.

[0254] In this embodiment, the terminal device receives first information sent by the network device. The first information is used to instruct the terminal device to detect the first DCI using a first CCE format. Based on the first information, the terminal device detects the first DCI using the first CCE format. In this embodiment, the network device can flexibly instruct the terminal device to use the CCE format for detecting the DCI through the first information, thereby improving the success rate of DCI detection.

[0255] Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this application. The device can be a network device, a component within a network device, or a device compatible with a network device. Figure 7 The communication device 700 shown may include a determining unit 701 and a communication unit 702. The determining unit 701 is used to determine whether interference from neighboring cells exists in the terminal device. The communication unit 702 integrates a receiving unit and a transmitting unit. The communication unit 702 may also be referred to as a transceiver unit.

[0256] Alternatively, the communication unit 702 can be divided into a receiving unit and a transmitting unit. Wherein:

[0257] The determining unit 701 is used to determine the detection parameters for adjusting the downlink control information of the terminal device;

[0258] The communication unit 702 is used to send first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format.

[0259] In one alternative implementation, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0260] In one alternative implementation, the quantity is an integer not equal to 6.

[0261] In one alternative implementation, the first information includes an index value corresponding to the first CCE format.

[0262] In one alternative implementation, the first information is carried via a second DCI.

[0263] In one optional implementation, the first information may further include the cell identifier of the serving cell; or, the first information may further include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may further include the cell identifier of the serving cell and the identifier of the first search space set.

[0264] In one alternative implementation, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0265] In an optional implementation, the communication unit 702 is further configured to receive at least one RSRP of a first communication system cell sent by the terminal device;

[0266] The determining unit 701 is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the RSRP of the at least one first communication system cell.

[0267] In an optional implementation, the communication unit 702 is further configured to receive channel state information of at least one beam transmitted by the terminal device;

[0268] The determining unit 701 is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the channel state information of the at least one beam.

[0269] In this embodiment of the application, when it is determined that the terminal device is interfered with by the signal of at least one neighboring cell, a first message is sent to the terminal device. The first message is used to instruct the terminal device to use a first CCE format to detect the first DCI. For example, when the terminal device is interfered with by a neighboring cell, the CCE format used by the terminal device to detect the DCI can be flexibly adjusted to improve the success rate of DCI detection.

[0270] Please see Figure 8 , Figure 8 This is a schematic diagram of another communication device provided in the embodiments of this application, used to achieve the above. Figure 2 , Figure 4 or Figure 5 The communication device 800 can be a terminal device or a device for a terminal device. The device for the terminal device can be a chip system or a chip within the terminal device. The chip system can consist of chips or may include chips and other discrete components.

[0271] Alternatively, a communication device 800 may be used to achieve the above. Figure 2 , Figure 4 or Figure 5 The function of a network device. This communication device can be a network device or a device used with a network device. The device used with a network device can be a chip system or chip within the network device.

[0272] The communication device 800 includes at least one processor 820 for implementing the data processing functions of the terminal device or network device in the method provided in this application embodiment. The device 800 may also include a communication interface 810 for implementing the transmit and receive operations of the terminal device or network device in the method provided in this application embodiment. In this application embodiment, the processor 820 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. In this application embodiment, the communication interface 810 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices via a transmission medium. For example, the communication interface 810 is used for communication between the device in device 800 and other devices. The processor 820 uses the communication interface 810 to send and receive data, and is used to implement the above method embodiments. Figure 2 , Figure 4 or Figure 5 The method described.

[0273] In one possible design, if the communication device is a terminal device or a device for a terminal device, the communication interface 810 is used to receive first information sent by the network device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format.

[0274] Processor 820 is configured to detect the first DCI using the first CCE format based on the first information.

[0275] Optionally, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0276] Optionally, the quantity is an integer not equal to 6.

[0277] Optionally, the communication interface 810 is further configured to receive second information sent by the network device, the second information being used to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format;

[0278] The processor 820 is further configured to detect the first DCI using the second CCE format based on the second information.

[0279] Optionally, the first information includes an index value corresponding to the first CCE format.

[0280] Optionally, the communication interface 810 is specifically used to receive the first information sent by the network device in the first search space set;

[0281] The processor 820 is specifically configured to: detect the first DCI in the first search space set using the first CCE format; or...

[0282] Determine a first control resource set associated with the first search space set, and detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the at least one search space set includes the first search space set; or...

[0283] All search space sets configured on the serving cell where the first search space set is located use the first CCE format to detect the first DCI, and all search space sets configured on the serving cell include the first search space set.

[0284] Optionally, the first information is carried via a second DCI.

[0285] Optionally, the first information may also include the cell identifier of the serving cell;

[0286] The communication interface 810 is specifically used to detect the first DCI using the first CCE format on all search space sets configured on the serving cell.

[0287] Optionally, the first information may also include the cell identifier of the serving cell and the identifier of the first control resource set;

[0288] The processor 820 is specifically configured to detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the first control resource set is a control resource set configured on the serving cell.

[0289] Optionally, the first information may also include the cell identifier of the serving cell and the identifier of the first search space set;

[0290] The processor 820 is specifically used to detect the first DCI using the first CCE format in the first search space set configured on the serving cell.

[0291] Optionally, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0292] Optionally, the processor 820 is also configured to perform signal measurements on at least one first communication system cell;

[0293] The communication interface 810 is also used to send the measured reference signal received power (RSRP) of the at least one first communication system cell to the network device.

[0294] Optionally, the communication interface 810 is further configured to receive indication information sent by the network device, the indication information being used to instruct the terminal device to report the measured RSRP of the first communication system cell to the network device;

[0295] The processor 820 is specifically configured to perform signal measurements on the at least one first communication system cell according to the instruction information;

[0296] The communication interface 810 is specifically used to send the measured RSRP of the at least one first communication system cell to the network device through the physical layer.

[0297] Optionally, the processor 820 is also configured to perform channel measurements on at least one beam;

[0298] The communication interface 810 is also used to send the measured channel state information of the at least one beam to the network device.

[0299] In one possible design, if the communication device is a network device or a device for a network device, the processor 820 is configured to determine that the terminal device is subject to signal interference from at least one neighboring cell.

[0300] The communication interface 810 is used to send first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using the first control channel unit (CCE) format.

[0301] Optionally, the first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, the distribution of the demodulation reference signal (DMRS) in the REG, or the distribution of at least one resource element (RE) that needs to be excluded from the REG.

[0302] Optionally, the quantity is an integer not equal to 6.

[0303] Optionally, the first information includes an index value corresponding to the first CCE format.

[0304] Optionally, the first information is carried via a second DCI.

[0305] Optionally, the first information may further include the cell identifier of the serving cell; or, the first information may further include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may further include the cell identifier of the serving cell and the identifier of the first search space set.

[0306] Optionally, the first information is carried by the Media Access Control Layer Control Unit (MAC CE).

[0307] Optionally, the communication interface 810 is further configured to receive at least one RSRP of a first communication system cell sent by the terminal device;

[0308] The processor 820 is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the RSRP of the at least one first communication system cell.

[0309] Optionally, the communication interface 810 is also used to receive channel state information of at least one beam sent by the terminal device;

[0310] The processor 820 is specifically used to determine the detection parameters for adjusting the downlink control information of the terminal device based on the channel state information of the at least one beam.

[0311] The communication device 800 may further include at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 820. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, for information exchange between devices, units, or modules. The processor 820 may operate in conjunction with the memory 830. The processor 820 may execute program instructions stored in the memory 830. At least one of the at least one memories may be included in the processor.

[0312] When the communication device 800 is powered on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 820 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit (not shown in the figure). The RF circuit processes the baseband signal and transmits the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the device 800, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 820. The processor 820 converts the baseband signal back into data and processes the data.

[0313] In another implementation, the radio frequency circuitry and antenna can be set up independently of the processor 820 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antenna can be arranged in a remote manner, independent of the communication device.

[0314] This application embodiment does not limit the specific connection medium between the communication interface 810, processor 820, and memory 830. This application embodiment... Figure 8 The memory 830, processor 820, and communication interface 810 are connected via a bus 840. Figure 8 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0315] When the communication device 800 is specifically used in a terminal device, such as when the communication device 800 is a chip or chip system, the communication interface 810 can output or receive baseband signals. When the communication device 800 is specifically used in a terminal device, the communication interface 810 can output or receive radio frequency signals.

[0316] It should be noted that the communication device can execute the relevant steps of the terminal device or network device in the foregoing method embodiments. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0317] For various devices and products applied to or integrated into communication devices, each of its modules can be implemented using hardware such as circuits. Different modules can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal. Alternatively, at least some modules can be implemented using software programs that run on a processor integrated within the terminal, while the remaining (if any) modules can be implemented using hardware such as circuits.

[0318] The aforementioned memory can be volatile memory or non-volatile memory, or may include both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0319] This application provides a chip. The chip includes a processor and a memory. The number of processors can be one or more, and the number of memories can be one or more. The processor can execute the above-described functions by reading instructions and data stored in the memory. Figure 2 , Figure 4 or Figure 5 The downlink control information detection method shown, and the steps performed in the related implementation methods.

[0320] like Figure 9 As shown, Figure 9This is a schematic diagram of a module device provided in an embodiment of this application. The module device 900 can execute the relevant steps of the terminal device in the aforementioned method embodiments. The module device 900 includes: a communication module 901, a power module 902, a storage module 903, and a chip module 904. The power module 902 provides power to the module device; the storage module 903 stores data and instructions; the communication module 901 performs internal communication within the module device or communication between the module device and external devices; the chip module 904 can perform the aforementioned steps... Figure 2 , Figure 4 or Figure 5 The downlink control information detection method shown, and the steps performed in the related implementation methods.

[0321] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, the computer program including program instructions, which, when executed by a processor, can perform the above-described... Figure 2 , Figure 4 or Figure 5 The downlink control information detection method shown, and the steps performed in the related implementation methods.

[0322] The computer-readable storage medium can be an internal storage unit of the terminal device or network device described in any of the foregoing embodiments, such as a hard disk or memory. The computer-readable storage medium can also be an external storage device of the terminal device or network device, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the device. Further, the computer-readable storage medium can include both internal and external storage units of the terminal device or network device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available media can be magnetic media (e.g., floppy disk, hard disk, magnetic tape), optical media (e.g., high-density digital video disc (DVD)), or semiconductor media. Semiconductor media can be solid-state drives (SSDs).

[0323] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means.

[0324] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0325] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, and systems can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and other division methods may exist in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0326] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0327] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0328] The integrated unit implemented as a software functional unit described above can be stored in a computer-readable storage medium. This software functional unit, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention.

[0329] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0330] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A downlink control information detection method, applied in a terminal device, characterized in that, include: When a terminal device is interfered with by at least one neighboring cell, it receives first information sent by a network device. The first information is used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format. The resource element group (REG) in the CCE of the first CCE format needs to exclude at least one resource element (RE) occupied by the cell-specific reference signal (CRS) sent by the at least one neighboring cell that caused the interference. Based on the first information, the first DCI is detected using the first CCE format.

2. The method as described in claim 1, characterized in that, The first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, or the distribution of the demodulation reference signal (DMRS) in the REGs.

3. The method as described in claim 2, characterized in that, The quantity is an integer not equal to 6.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: The terminal device receives second information sent by the network device, the second information being used to instruct the terminal device to stop detecting the first DCI using the first CCE format or to instruct the terminal device to detect the first DCI using the second CCE format. Based on the second information, the first DCI is detected using the second CCE format.

5. The method according to any one of claims 1-3, characterized in that, The first information includes an index value corresponding to the first CCE format.

6. The method according to any one of claims 1-3, characterized in that, The first information sent by the receiving network device includes: The first information sent by the network device is received in the first search space set; The step of detecting the first DCI using the first CCE format includes: The first DCI is detected in the first search space set using the first CCE format; or... Determine a first control resource set associated with the first search space set, and detect the first DCI using the first CCE format in at least one search space set mapped to the first control resource set, wherein the at least one search space set includes the first search space set; or... All search space sets configured on the serving cell where the first search space set is located use the first CCE format to detect the first DCI, and all search space sets configured on the serving cell include the first search space set.

7. The method according to any one of claims 1-3, characterized in that, The first information is carried by the second DCI.

8. The method as described in claim 5, characterized in that, The first information also includes the cell identifier of the serving cell; the step of detecting the first DCI using the first CCE format includes: The first DCI is detected using the first CCE format on all search space sets configured on the serving cell.

9. The method as described in claim 5, characterized in that, The first information also includes the cell identifier of the serving cell and the identifier of the first control resource set; the step of detecting the first DCI using the first CCE format includes: The first DCI is detected using the first CCE format in at least one search space set mapped to the first control resource set, wherein the first control resource set is the control resource set configured on the serving cell.

10. The method as described in claim 5, characterized in that, The first information also includes the cell identifier of the serving cell and the identifier of the first search space set; the step of detecting the first DCI using the first CCE format includes: The first search space set configured on the serving cell detects the first DCI using the first CCE format.

11. The method according to any one of claims 8-10, characterized in that, The first information is carried by the Media Access Control Layer Control Unit (MAC CE).

12. The method according to any one of claims 1-3, 8, 9, and 10, characterized in that, Before receiving the first information sent by the network device, the method further includes: Perform signal measurements on at least one first communication system cell and transmit the measured reference signal received power (RSRP) of the at least one first communication system cell to the network device.

13. The method as described in claim 12, characterized in that, Before performing measurements on at least one first communication system cell, the method further includes: The terminal device receives an indication message sent by the network device, the indication message being used to instruct the terminal device to report the measured RSRP of the first communication system cell to the network device; The step of performing measurements on at least one first communication system cell and transmitting the measured reference received power (RSRP) of the at least one first communication system cell to the network device includes: Signal measurements are performed on the at least one first communication system cell according to the instruction information, and the measured RSRP of the at least one first communication system cell is sent to the network device through the physical layer.

14. The method according to any one of claims 1-3, 8, 9, 10, and 13, characterized in that, Before receiving the first information sent by the network device, the method further includes: Perform channel measurements on at least one beam and send the measured channel state information of the at least one beam to the network device.

15. A downlink control information detection method, applied in network equipment, characterized in that, include: When a terminal device is interfered with by at least one neighboring cell, the detection parameters of the downlink control information of the terminal device are determined and adjusted. Send first information to the terminal device, the first information being used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format, wherein the resource element group (REG) in the CCE of the first CCE format needs to exclude at least one resource element (RE) occupied by the cell-specific reference signal (CRS) transmitted by at least one neighboring cell that is causing interference.

16. The method as described in claim 15, characterized in that, The first CCE format includes one or more of the following: the number of resource element groups (REGs) contained in a single CCE, or the distribution of the demodulation reference signal (DMRS) in the REGs.

17. The method as described in claim 16, characterized in that, The quantity is an integer not equal to 6.

18. The method according to any one of claims 15-17, characterized in that, The first information includes an index value corresponding to the first CCE format.

19. The method according to any one of claims 15-17, characterized in that, The first information is carried by the second DCI.

20. The method as described in claim 18, characterized in that, The first information may also include the cell identifier of the serving cell; or, the first information may also include the cell identifier of the serving cell and the identifier of the first control resource set; or, the first information may also include the cell identifier of the serving cell and the identifier of the first search space set.

21. The method as described in claim 20, characterized in that, The first information is carried by the Media Access Control Layer Control Unit (MAC CE).

22. The method according to any one of claims 15-17, 20, and 21, characterized in that, Before determining the detection parameters for adjusting the downlink control information of the terminal device, the method further includes: Receive at least one RSRP of a first communication system cell sent by the terminal device; The detection parameters for determining the downlink control information of the terminal device include: Based on the RSRP of the at least one first communication system cell, the detection parameters for adjusting the downlink control information of the terminal equipment are determined.

23. The method according to any one of claims 15-17, 20, and 21, characterized in that, Before determining the detection parameters for adjusting the downlink control information of the terminal device, the method further includes: Receive channel state information of at least one beam sent by the terminal device; The detection parameters for adjusting the downlink control information of the terminal device include: Based on the channel state information of the at least one beam, the detection parameters for adjusting the downlink control information of the terminal device are determined.

24. The method according to any one of claims 15-17, 20, and 21, characterized in that, The detection parameters for determining the downlink control information of the terminal device include: Determine the detection parameters for adjusting some or all of the downlink control information of at least one serving cell in which the terminal device is located, or... Determine the detection parameters for adjusting the downlink control information of part or all of the control resource set of the serving cell where the terminal device is located, or... Determine the detection parameters for adjusting some or all of the search space set of the serving cell where the terminal device is located.

25. A communication device, used in a terminal equipment, characterized in that, include: A communication unit is configured to receive first information sent by a network device when a terminal device is interfered with by at least one neighboring cell. The first information is used to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format. The resource element group (REG) in the CCE of the first CCE format needs to exclude at least one resource element (RE) occupied by the cell-specific reference signal (CRS) sent by the at least one neighboring cell that caused the interference. The detection unit is used to detect the first DCI using the first CCE format based on the first information.

26. A communication device, used in network equipment, characterized in that, include: The determining unit is used to determine that the terminal device is subject to signal interference from at least one neighboring cell when the terminal device is subject to interference from at least one neighboring cell. A communication unit is configured to send first information to the terminal device, the first information being configured to instruct the terminal device to detect first downlink control information (DCI) using a first control channel unit (CCE) format, wherein the resource element group (REG) in the CCE of the first CCE format needs to exclude at least one resource element (RE) occupied by a cell-specific reference signal (CRS) transmitted by at least one neighboring cell that causes interference.

27. A communication device, characterized in that, The communication device includes a processor and a memory interconnected thereto, wherein the memory is used to store a computer program, the computer program including program instructions, and the processor is configured to invoke the program instructions to perform the method as described in any one of claims 1 to 14 or claims 15-24.

28. A chip, characterized in that, The chip includes a processor and an interface, the processor and the interface being coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions to cause the method of any one of claims 1 to 14 or claims 15 to 24 to be performed.

29. A module device, characterized in that, The module device includes a communication module, a power module, a storage module, and a chip module, wherein: The power module is used to provide electrical energy to the module device; The storage module is used to store data and instructions; The communication module is used for internal communication within the module device, or for communication between the module device and external devices; The chip module is used to perform the method as described in any one of claims 1 to 14 or claims 15-24.

30. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, the computer program including program instructions that, when executed by a processor, cause the processor to perform the method as described in any one of claims 1 to 14 or claims 15-24.

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