Wireless communication method and apparatus, device, and storage medium

Abstract

A wireless communication method and apparatus, a device, and a storage medium, relating to the technical field of mobile communications. The method is executed by a terminal device. The method comprises: receiving first DCI (210); and receiving second DCI on the basis of information indicated by the first DCI (220). The described solution can improve the efficiency of a terminal device receiving DCI, and improve the energy-saving effect and communication efficiency of the terminal device.

Description

Wireless communication methods, apparatus, devices and storage media Technical Field

[0001] This application relates to the field of mobile communication technology, and in particular to a wireless communication method, apparatus, device and storage medium. Background Technology

[0002] In wireless communication systems, downlink control information (DCI) is typically used for downlink scheduling, uplink granting, or transmission of common control information.

[0003] In related technologies, network devices transmit the Physical Downlink Control Channel (PDCCH) carrying the DCI in the search space, and correspondingly, terminal devices perform blind detection of the PDCCH in the search space. Summary of the Invention

[0004] This application provides a wireless communication method, apparatus, device, and storage medium. The technical solution is as follows:

[0005] On one hand, embodiments of this application provide a wireless communication method, which is executed by a terminal device, and the method includes:

[0006] Receive the first DCI;

[0007] The second DCI is received based on the information indicated by the first DCI.

[0008] On one hand, embodiments of this application provide a wireless communication method, which is executed by a network device, and the method includes:

[0009] Send a first DCI to the terminal device, wherein the first DCI is used by the terminal device to receive the second DCI;

[0010] Send a second DCI to the terminal device.

[0011] On the other hand, embodiments of this application provide a wireless communication device, the device comprising:

[0012] The receiving module is used to receive the first DCI.

[0013] The receiving module is further configured to receive a second DCI based on the information indicated by the first DCI.

[0014] On the other hand, embodiments of this application provide a wireless communication device, the device comprising:

[0015] The sending module sends a first DCI to the terminal device, and the first DCI is used by the terminal device to receive the second DCI;

[0016] The sending module is also used to send a second DCI to the terminal device.

[0017] On the other hand, embodiments of this application provide a communication device, which includes a processor, a memory, and a transceiver;

[0018] The memory stores a computer program, and the processor executes the computer program to enable the communication device to implement the above-described wireless communication method.

[0019] In another aspect, embodiments of this application also provide a computer-readable storage medium storing a computer program, which is loaded and executed by a processor to implement the above-described wireless communication method.

[0020] In another aspect, this application also provides a chip, the chip including an integrated circuit and firmware disposed in the integrated circuit, the chip being used to operate in a communication device to cause the communication device to perform the above-described wireless communication method.

[0021] In another aspect, this application provides a computer program product including computer instructions stored in a computer-readable storage medium. A processor of a communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to perform the aforementioned wireless communication method.

[0022] In another aspect, this application provides a computer program that is executed by the processor of a communication device to implement the above-described wireless communication method.

[0023] The solution provided in this application embodiment allows network devices and terminal devices to transmit DCI in a two-stage manner. Specifically, the terminal device first receives a first DCI, which can indicate the subsequent second DCI. Then, the terminal device receives the second DCI based on the information indicated by the first DCI. In the above solution, the DCI is transmitted in two stages, and the second-stage DCI (i.e., the aforementioned second DCI) can be indicated by the first-stage DCI (i.e., the aforementioned first DCI). Therefore, the complexity of the terminal device receiving the second DCI can be reduced. For example, the terminal device does not need to perform blind detection on the second DCI, or the terminal device can reduce the complexity of blind detection on the second DCI by using the information indicated by the first DCI, thereby improving the efficiency of the terminal device in receiving DCI, and improving the energy-saving effect and communication efficiency of the terminal device. Attached Figure Description

[0024] Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0025] Figure 1B is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0026] Figure 1C is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0027] Figure 2 is a flowchart of a wireless communication method provided in an embodiment of this application;

[0028] Figure 3 is a flowchart of a wireless communication method provided in an embodiment of this application;

[0029] Figure 4 is a schematic diagram of a DCI transmission according to an embodiment of this application;

[0030] Figure 5 is a flowchart of a wireless communication method provided in an embodiment of this application;

[0031] Figure 6 is a schematic diagram of a DCI transmission resource according to an embodiment of this application;

[0032] Figure 7 is a schematic diagram of an information indication according to an embodiment of this application;

[0033] Figure 8 is a block diagram of a wireless communication device provided in an embodiment of this application;

[0034] Figure 9 is a block diagram of a wireless communication device provided in an embodiment of this application;

[0035] Figure 10 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0037] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0038] 1) Communication system scenario

[0039] Communication system scenarios can include terrestrial networks (TN) and non-terrestrial networks (NTN). NTN typically uses satellite communication to provide services to terrestrial users. Current NTN systems include New Radio (NR)-NTN and Internet of Things (IoT)-NTN systems, and other NTN systems may be included in the future.

[0040] For example, Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1A, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal device, terminal device). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within that coverage area.

[0041] Figure 1A exemplarily illustrates a network device and two terminal devices. In some embodiments, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area. This application does not limit this.

[0042] For example, Figure 1B is a schematic diagram of another communication system architecture provided in an embodiment of this application. Referring to Figure 1B, it includes a terminal device 120 and a satellite 130, which can communicate wirelessly. The network formed between the terminal device 120 and the satellite 130 can also be called an NTN. In the communication system architecture shown in Figure 1B, the satellite 130 can function as a base station, and the terminal device 120 and the satellite 130 can communicate directly. In this system architecture, the satellite 130 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices, and the coverage area of ​​each network device may include other numbers of terminal devices; this application does not limit this aspect.

[0043] For example, Figure 1C is a schematic diagram of another communication system architecture provided in an embodiment of this application. Referring to Figure 1C, it includes a terminal device 120, a satellite 130, and a base station 140. Wireless communication is possible between the terminal device 120 and the satellite 130, and communication is possible between the satellite 130 and the base station 140. The network formed between the terminal device 120, the satellite 130, and the base station 140 can also be called an NTN. In the architecture of the communication system shown in Figure 1C, the satellite 130 may not have the function of a base station, and communication between the terminal device 120 and the base station 140 needs to be relayed through the satellite 130. In this system architecture, the base station 140 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices, and the coverage area of ​​each network device may include other numbers of terminal devices; this application does not limit this.

[0044] In future communication systems such as Beyond Fifth Generation (B5G) and 6th Generation (6G), there may also be Distributed Multiple-In Multiple-Out (DMIMO, also known as distributed antenna systems) and / or Massive Multiple-In Multiple-Out (MMIMO, also known as massive antenna matrix systems) scenarios. In some cases, Distributed MIMO and / or Massive MIMO may also support cell-free or UE-centric network deployment scenarios. It should be understood that the above scenarios also apply to TN and / or NTN.

[0045] 2) PDCCH detection

[0046] The network sends DCI (Direct Access Control) messages to the terminal. DCI is used for downlink scheduling (e.g., scheduling the Physical Downlink Shared Channel (PDSCH)) or uplink granting (e.g., scheduling the Physical Uplink Shared Channel (PUSCH)). Alternatively, DCI can be used to transmit common control information, carried via PDCCH. The network configures a search space (SS) for the terminal. Different aggregation levels (AL) can be configured, and at each aggregation level, the number of candidate PDCCHs the terminal needs to monitor is configured. Since the terminal does not know which transmission resource in the search space the network device will transmit the PDCCH, blind PDCCH detection needs to be performed in the search space. This involves detecting all possible transmission resources that might transmit the PDCCH until a PDCCH is detected. The maximum number of PDCCHs a terminal can blindly detect in a time slot is related to the subcarrier spacing. For example, with a 15kHz subcarrier spacing, the maximum number of PDCCHs a terminal can detect in a time slot is 44. Please refer to Table 1: μ values ​​of 0, 1, 2, and 3 correspond to subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz, respectively.

[0047] Table 1

[0048] In 5G NR systems, DCI uses Polar encoding. Each time the terminal detects PDCCH, it needs to perform decoding, which leads to higher power consumption and increased processing latency.

[0049] A PDCCH's transmission resources can include M1 Control Channel Elements (CCEs), corresponding to different aggregation levels (ALs), such as M1 = 1, 2, 4, 8, 16, 32. The relationship between aggregation levels and the number of CCEs is shown in Table 2 below. Each CCE can include M2 ​​Resource Element Groups (REGs), for example, M2 = 6. One REG corresponds to one PRB or A subcarriers in the frequency domain (A is an integer greater than or equal to 1), and one Orthogonal Frequency Division Multiplexing (OFDM) symbol in the time domain. The transmission reliability varies depending on the number of CCEs occupied by the PDCCH. For example, the more CCEs a PDCCH occupies, the higher its transmission reliability.

[0050] Table 2

[0051] 3) Terminal complexity optimization

[0052] NR R15 / R16 terminal designs support extremely high peak data rates. Therefore, the terminal capabilities are highly demanding. The LTE standard defines a maximum single-carrier bandwidth of 20MHz, with larger bandwidths achieved through multi-carrier aggregation. 5G NR ultimately defines a maximum carrier bandwidth of 100MHz for frequencies below 6GHz, five times that of LTE. The maximum carrier bandwidth for millimeter-wave frequencies is 400MHz. The required multiple-input multiple-output (MIMO) antenna configuration for NR has also increased further. The reference antenna configuration for LTE terminals is one transmit and two receive, while NR R15 requires two transmit and four receive antennas at frequencies above 2500MHz. NR R15 / R16 also does not support half-duplex, requiring data processing capabilities for all uplink and downlink slots.

[0053] However, some NR applications do not require such high processing power in terms of capacity and speed. These applications include the Internet of Things (IoT), industrial automation, and wearable devices. These scenarios all demand communication hardware with low size and power consumption. Lightweight capability is a characteristic of these terminals. Based on this consideration, NR Release 17 research introduced a compact terminal standard with reduced capabilities.

[0054] The Compact Terminal standard reduces some of the mandatory capabilities of NR 15 / 16. Corresponding terminal function groups are defined for these capabilities. The Compact Terminal standard also further optimizes terminal identification, access procedures, and power consumption in measurements to suit relevant application scenarios.

[0055] This compact terminal design significantly reduces the complexity of the terminal hardware. It also correspondingly reduces the terminal's power consumption, thus achieving energy savings.

[0056] In the above scheme, the network usually does not schedule uplink and downlink transmissions for the terminal. The terminal cannot know whether the network has scheduled these transmissions and needs to detect the PDCCH in the configured search space to determine whether downlink data reception or uplink data transmission is necessary. However, PDCCH detection consumes the terminal's energy. This results in the terminal wasting energy due to PDCCH detection, failing to utilize the terminal's energy-saving and consumption-reduction capabilities.

[0057] Please refer to Figure 2, which shows a flowchart of a wireless communication method provided in an embodiment of this application. This method can be executed by a terminal device, wherein the terminal device can be terminal device 120 in the aforementioned network architecture, or a terminal device in other network architectures; this application is not limited in this regard. The method may include at least some of the following steps:

[0058] Step 210: Receive the first DCI.

[0059] In some embodiments, the first DCI may indicate all or part of the information in the transmission information of the second DCI.

[0060] In some embodiments, the transmission information described above includes at least one of transmission resources and / or transmission parameters.

[0061] Step 220: Receive the second DCI according to the information indicated by the first DCI.

[0062] In this embodiment of the application, the terminal device can directly receive the second DCI based on the information indicated by the first DCI, or perform blind detection on the second DCI.

[0063] The solution provided in this application embodiment allows network devices and terminal devices to transmit DCI in a two-stage manner. Specifically, the terminal device first receives a first DCI, which can indicate the subsequent second DCI. Then, the terminal device receives the second DCI based on the information indicated by the first DCI. In the above solution, the DCI is transmitted in two stages, and the second-stage DCI (i.e., the aforementioned second DCI) can be indicated by the first-stage DCI (i.e., the aforementioned first DCI). Therefore, the complexity of the terminal device receiving the second DCI can be reduced. For example, the terminal device does not need to perform blind detection on the second DCI, or the terminal device can reduce the complexity of blind detection on the second DCI by using the information indicated by the first DCI, thereby improving the efficiency of the terminal device in receiving DCI, and improving the energy-saving effect and communication efficiency of the terminal device.

[0064] Please refer to Figure 3, which shows a flowchart of a wireless communication method provided in an embodiment of this application. This method can be executed by a network device, wherein the network device can be network device 110, satellite 130, or base station 140 in the aforementioned network architecture, or other communication devices; this application is not limited in this regard. The method may include at least some of the following steps:

[0065] Step 310: Send the first DCI to the terminal device. The first DCI is used by the terminal device to receive the second DCI.

[0066] Step 320: Send the second DCI to the terminal device.

[0067] The solution provided in this application embodiment allows network devices and terminal devices to transmit DCI in a two-stage manner. Specifically, the terminal device first receives a first DCI, which can indicate the subsequent second DCI. Then, the terminal device receives the second DCI based on the information indicated by the first DCI. In the above solution, the DCI is transmitted in two stages, and the second-stage DCI (i.e., the aforementioned second DCI) can be indicated by the first-stage DCI (i.e., the aforementioned first DCI). Therefore, the complexity of the terminal device receiving the second DCI can be reduced. For example, the terminal device does not need to perform blind detection on the second DCI, or the terminal device can reduce the complexity of blind detection on the second DCI by using the information indicated by the first DCI, thereby improving the efficiency of the terminal device in receiving DCI, and improving the energy-saving effect and communication efficiency of the terminal device.

[0068] Based on the schemes shown in Figures 2 and 3, please refer to Figure 4, which illustrates a schematic diagram of a DCI transmission according to an embodiment of this application. As shown in part (a) of Figure 4, at time T1, base station 410 (network device) sends a first DCI to terminal device 420. This first DCI can indicate all or part of the transmission parameters of the second DCI. Terminal device 420 can perform blind detection of the first DCI in a pre-configured resource set (such as a search space).

[0069] As shown in part (b) of Figure 4, at time T2 after time T1, base station 410 sends a second DCI to terminal device 420. Terminal device 420 receives or blindly detects the second DCI in the search space according to the information indicated by the first DCI.

[0070] Based on the schemes shown in Figures 2 and 3, please refer to Figure 5, which illustrates a flowchart of a wireless communication method provided in an embodiment of this application. This method can be interactively executed by a terminal device and a network device. The terminal device can be terminal device 120 in the aforementioned network architecture, or other communication devices. The network device can be network device 110, satellite 130, or base station 140 in the aforementioned network architecture, or other communication devices. This method may include at least some of the following steps:

[0071] Step 510: The network device sends the first DCI to the terminal device; the terminal device receives the first DCI.

[0072] In this embodiment of the application, the terminal device can blindly detect the PDCCH in a resource set pre-configured by the network device, such as the Control Resource Set (CORESET) or the search space, thereby receiving the first DCI.

[0073] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the first DCI is used to indicate all or part of the information in the transmission information of the second DCI.

[0074] In some embodiments, the above-described transmission information may be used to indicate at least one of transmission resources and transmission parameters.

[0075] In the embodiments of this application, the network device can indicate all or part of the transmission resources, transmission parameters, and other information of the second-order DCI (second DCI) to the terminal device through the first-order DCI (i.e., the first DCI mentioned above) in the two-order DCI, so that the terminal device can receive or blindly detect the second DCI based on the known information in the transmission information of the second DCI. This simplifies the complexity of the terminal device receiving or blindly detecting the second-order DCI and improves the efficiency and energy saving effect of the terminal device receiving the DCI.

[0076] Furthermore, in this embodiment, the network device can transmit all or part of the information in the transmission information of the second-order DCI through the first-order DCI. Therefore, all or part of the information in the transmission information of the second-order DCI can be determined before the transmission of the first-order DCI, without the need for fixed pre-configuration, which can improve the flexibility of DCI transmission.

[0077] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, when the first DCI indicates part of the transmission information of the second DCI, the remaining part of the transmission information of the second DCI is indicated by the network device to the terminal device.

[0078] In some embodiments, when the first DCI indicates a portion of the transmission information of the second DCI, the network device can send the remaining portion of the transmission information of the second DCI to the terminal device via a System Information Block (SIB); for example, the network device can send SIB information that carries the remaining portion of the transmission information of the second DCI.

[0079] In some embodiments, where the first DCI indicates a portion of the transmission information of the second DCI, the network device may send the remaining portion of the transmission information of the second DCI to the terminal device during random access. For example, the network device may send the remaining portion of the transmission information of the second DCI through a random access message (such as Msg.2 or Msg4) or a random access response (RAR).

[0080] In some embodiments, when the first DCI indicates a portion of the transmission information of the second DCI, the network device can configure the remaining portion of the transmission information of the second DCI to the terminal device via Radio Resource Control (RRC) signaling.

[0081] In the scheme shown in the embodiments of this application, the network device can pre-configure a part of the transmission information of the second-order DCI for the terminal device, and when transmitting DCI, the other part of the transmission information of the second-order DCI is indicated by the first-order DCI, so that the terminal device can receive or blindly detect the second-order DCI through the transmission information of the second-order DCI. While improving the transmission efficiency and energy saving effect of DCI, it can also improve the flexibility of DCI transmission.

[0082] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, when the first DCI indicates part of the transmission information of the second DCI, the remaining part of the transmission information of the second DCI is indicated to the terminal device by the network device, and / or the remaining part of the transmission information of the second DCI is predefined by the protocol.

[0083] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the network device configures a first transmission resource set to the terminal device so that the terminal device can detect a first DCI in the first transmission resource set.

[0084] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the process of the terminal device receiving the first DCI may include:

[0085] The terminal device detects the first DCI in the first set of transmission resources configured in the network device.

[0086] The first transmission resource set mentioned above may be a control-resource set (CORESET) and / or a search space; for example, the first transmission resource set mentioned above is a CORESET and / or a search space used for transmitting PDCCH.

[0087] In the scheme shown in the embodiments of this application, the network device can pre-configure a first transmission resource set for the terminal device to detect the first DCI or the PDCCH carrying the first DCI; subsequently, when the terminal device detects the DCI, it can perform blind detection on the first DCI or the PDCCH carrying the first DCI in the first transmission resource set.

[0088] In the scheme shown in the embodiments of this application, the network device can pre-configure a part of the transmission information of the second-order DCI for the terminal device, and when transmitting DCI, the other part of the transmission information of the second-order DCI is indicated by the first-order DCI, so that the terminal device can receive or blindly detect the second-order DCI through the transmission information of the second-order DCI. While improving the transmission efficiency and energy saving effect of DCI, it can also improve the flexibility of DCI transmission.

[0089] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the first DCI is transmitted on all or part of the resources in the first transmission resource set (denoted as mode 1); or,

[0090] The first DCI is transmitted on all resources in the first transmission resource set except for those reserved for the reference signal (denoted as mode 2).

[0091] In some embodiments, the terminal device obtains indication information from the network device and determines, based on the indication information, the transmission mode of the first DCI to be mode 1 or mode 2 as described above.

[0092] In this embodiment, the network device may use all or part of the transmission resources included in the CORESET and / or search space to transmit the first DCI. For example, the network device transmits the first DCI in the control resource set or search space, and the terminal device monitors or detects the first DCI in the control resource set or search space.

[0093] For example, if the CORESET or search space includes A CCEs, the transmission resources required for the first DCI are B CCEs, where B is less than or equal to A; if B is less than A, then some of the transmission resources in the CORESET or search space are used to transmit the first DCI; if B is equal to A, then all the transmission resources in the CORESET or search space are used to transmit the first DCI.

[0094] Optionally, the first DCI occupies all resources in the first transmission resource for transmission; during the channel coding and rate matching process of the information bits of the first DCI, the network device performs rate matching based on the total number of resources included in the first transmission resource and the modulation method, so that the transmission block after channel coding and modulation of the information bits of the first DCI can fill all available transmission resources in the first transmission resource; wherein, the aforementioned all available transmission resources are all resources that can be used to map the first DCI, for example, excluding resources reserved for reference signal transmission.

[0095] In the scheme shown in the embodiments of this application, the network device can transmit the first DCI on all or part of the resources in the first transmission resource set to ensure the transmission effect of the first DCI and the accuracy of the terminal device in detecting the first DCI; or, the network device can also transmit the first DCI on all resources in the first transmission resource set except for the resources used to carry the reference signal, so as to ensure the transmission effect of the first DCI and the accuracy of the terminal device in detecting the first DCI, while avoiding affecting the transmission of the reference signal.

[0096] Based on the solutions shown in any one or more embodiments of the above-described embodiments of this application, in some embodiments, the above-described wireless communication method further includes:

[0097] The network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information sent by the network device accordingly.

[0098] The process by which the terminal device detects the first DCI in the first transmission resource set configured by the network device may include: the terminal device detecting the first DCI in the first transmission resource set according to the first configuration information.

[0099] In some embodiments, the network device may send first configuration information to the terminal device via SIB; for example, the network device may send SIB information, which carries the first configuration information.

[0100] In some embodiments, the network device may send first configuration information to the terminal device during random access. For example, the network device may send the first configuration information through a random access message (such as Msg.2 or Msg4) or RAR.

[0101] In some embodiments, the network device may send first configuration information to the terminal device via RRC signaling.

[0102] In this embodiment of the application, the network device can pre-configure configuration information for detecting the first DCI (i.e., the first configuration information mentioned above) to the terminal device, so that the terminal device can perform blind detection of the first DCI according to the first configuration information, thereby simplifying the complexity of blind detection of the first DCI by the terminal device and improving the efficiency and energy saving effect of the terminal device receiving the first DCI.

[0103] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the first configuration information includes at least one of the following:

[0104] 1) Information in the DCI format of the first DCI.

[0105] In this embodiment of the application, the first DCI (first-order DCI) transmitted on the first transmission resource set corresponds to one or more DCI formats. The terminal device can perform DCI detection (blind detection of the first DCI) on the first transmission resource based on the DCI format configured by the first configuration information.

[0106] In some implementations, the network device sends first configuration information, which includes indication information for indicating the DCI format of the first DCI, and the terminal device performs DCI detection on the first transmission resource set based on the DCI format indicated by the indication information.

[0107] In some implementations, the first configuration information sent by the network device includes index information, the correspondence between the network device configuration index information and the DCI format, and the terminal device can determine the DCI format corresponding to the first DCI based on the index information and the correspondence, and then perform detection on the first transmission resource set based on the DCI format.

[0108] In some embodiments, the network device may implicitly indicate the DCI format of the first DCI through the first configuration information. For example, the DCI format of the first DCI may be associated with information such as the resource location where the first configuration information is located and the scrambling sequence.

[0109] In some embodiments, the network device configures a DCI format through the first configuration information described above, and the terminal device performs DCI detection on the first transmission resource set based on the configured DCI format, thereby reducing the complexity of the terminal device detecting the first DCI.

[0110] 2) The number of information bits in the first DCI.

[0111] In this embodiment of the application, the network device can configure the number of information bits of the first DCI to the terminal device through the first configuration information.

[0112] In this embodiment of the application, the network device can configure a first value to the terminal device through first configuration information. The first value is used to determine the number of bits corresponding to the first DCI, and the terminal device detects the first DCI based on the first value.

[0113] In this embodiment of the application, the first DCI may include multiple information fields. The terminal device detects the first DCI based on the number of information bits included in the first DCI. If different first DCIs include different numbers of information bits (that is, the first DCI may have multiple different numbers of information bits), the terminal device may detect the first DCI for different numbers of information bits respectively.

[0114] In some implementations, the network device sends first configuration information, which includes indication information for indicating the number of information bits corresponding to the first DCI. The terminal device performs DCI detection on the first transmission resource set based on the number of information bits indicated by the indication information to blindly detect the first DCI.

[0115] In some implementations, the first configuration information sent by the network device includes index information. The network configures the correspondence between the index information and the number of information bits corresponding to the first DCI. The terminal device can determine the number of information bits corresponding to the first DCI based on the index information and the correspondence, and then perform DCI detection based on the number of information bits on the first transmission resource set.

[0116] In some embodiments, the network device may implicitly indicate the number of information bits of the first DCI through the first configuration information. For example, the number of information bits of the first DCI may be associated with information such as the resource location where the first configuration information is located and the scrambling sequence.

[0117] In some embodiments, the network device can configure a number of information bits through first configuration information, and the terminal device performs DCI detection on the first transmission resource set based on the configured number of information bits, thereby reducing the complexity of the terminal device detecting the first DCI.

[0118] It should be noted that, in the embodiments of this application, the number of information bits in the first DCI includes the number of bits corresponding to each information field of the first DCI, and also includes the number of bits corresponding to the padding bits. These padding bits are used to ensure that the number of bits in different DCI formats is the same or to align different DCI formats. For example, if the total number of bits corresponding to each information field of the first DCI format is 80 bits, and the total number of bits corresponding to each information field of the second DCI format is 100 bits, 20 padding bits (e.g., the padding bit value is 0) are added after the information bits of the first DCI format to make the number of bits in the first DCI format and the second DCI format the same. In this case, the number of information bits (100 bits) of the first DCI format includes the number of bits in each information field (80 bits) and the padding bits (20 bits).

[0119] 3) Information on the aggregation level of the first DCI.

[0120] 4) Information on the number of CCEs in the first DCI.

[0121] Aggregation level and number of CCEs are information used to represent the number of transmission resources corresponding to DCI. The relationship between aggregation level and number of CCEs can be found in Table 2 above.

[0122] In this embodiment of the application, the network device can configure or adjust the number of transmission resources (i.e., the aggregation level and / or CCE number) on the first transmission resource set for transmitting DCI (i.e., the first DCI mentioned above) through the first configuration information, thereby ensuring the detection performance of the first DCI and improving transmission efficiency.

[0123] In some implementations, the network device sends first configuration information, which includes indication information for indicating the aggregation level and / or number of CCEs corresponding to the first DCI. The terminal device performs DCI detection on the first transmission resource set based on the aggregation level and / or number of CCEs indicated by the indication information.

[0124] In some implementations, the configuration information sent by the network device includes index information. The network device configures the correspondence between the index information and the aggregation level and / or the number of CCEs corresponding to the first DCI. The terminal device can determine the aggregation level and / or the number of CCEs corresponding to the first DCI based on the index information and the correspondence.

[0125] In some embodiments, the network device may implicitly indicate the aggregation level and / or number of CCEs of the first DCI through the first configuration information. For example, the aggregation level and / or number of CCEs of the first DCI may be associated with information such as the resource location and scrambling sequence of the first configuration information.

[0126] 5) Information on the quantity or size of the transmission resources of the first DCI.

[0127] In some implementations, the network device sends first configuration information, which includes a first parameter used to determine the first DCI or the number or size of transmission resources of the PDCCH carrying the first DCI.

[0128] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information on the quantity or size of the transmission resources of the first DCI includes a first parameter, the parameter value of which is used to indicate the proportion of the transmission resources of the first DCI to the resources available for DCI transmission in the first transmission resource set.

[0129] For example, the value of the first parameter includes one or more values ​​in {1, 0.5, 0.25, 0.125}. If the value of the first parameter in the first configuration information sent by the network device is 1, it means that all transmission resources in the first transmission resource set / all available transmission resources are used to transmit the first DCI; if the value of the first parameter in the first configuration information sent by the network device is 0.5, it means that half of the transmission resources in the first transmission resource set / half of the available transmission resources are used to transmit the first DCI; if the value of the first parameter in the first configuration information sent by the network device is 0.25, it means that 1 / 4 of the transmission resources in the first transmission resource set / 1 / 4 of the available transmission resources are used to transmit the first DCI; and so on.

[0130] In the scheme shown in the embodiments of this application, the network device can indicate the proportion of transmission resources used for transmitting the first DCI in the first transmission resource set through the first parameter in the first configuration information, so that the terminal device can detect the first DCI according to the proportion of transmission resources used for transmitting the first DCI in the first transmission resource set. In this scheme, the first parameter only needs a small number of bits to indicate the number or size of transmission resources for the first DCI, which can save configuration signaling and improve configuration efficiency.

[0131] In some embodiments, the network device may implicitly indicate the number or size of transmission resources for the first DCI through the first configuration information. For example, the number or size of transmission resources for the first DCI may be associated with information such as the resource location and scrambling sequence of the first configuration information.

[0132] 6) The starting location information of the transmission resources of the first DCI.

[0133] In some implementations, the network device sends first configuration information, which includes indication information for determining the starting position of the transmission resources of the first DCI or the PDCCH carrying the first DCI.

[0134] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the starting position of the transmission resources of the first DCI includes a time-domain starting position, a frequency-domain starting position, or a logical resource unit starting position. The logical resource unit includes CCE or REG.

[0135] For example, the first DCI is transmitted in a first transmission resource set, which includes 16 CCEs with corresponding CCE indices from CCE index 0 to CCE index 15. The network device sends indication information to indicate that the starting CCE of the first DCI corresponds to CCE index 8, meaning the first DCI starts mapping from CCE index 8. As another example, the first transmission resource set includes 3 OFDM symbols in the time domain and 8 PRBs in the frequency domain. The network device sends indication information to indicate that the starting position of the first DCI in the frequency domain is the first PRB among the 8 PRBs, and the starting position in the time domain is the first OFDM symbol among the 3 OFDM symbols.

[0136] In the scheme shown in the embodiments of this application, the network device can indicate the starting position of the transmission resources used to transmit the first DCI in the first transmission resource set through the indication information in the first configuration information, so that the terminal device can determine the transmission resources corresponding to the first DCI and detect the first DCI according to the indication information. In this scheme, the complexity of detecting the first DCI can be reduced by indicating the starting position of the transmission resources of the first DCI through the indication information.

[0137] In some embodiments, the network device may implicitly indicate the starting position of the transmission resources of the first DCI through the first configuration information. For example, the starting position of the transmission resources of the first DCI may be associated with the resource location, scrambling sequence, and other information in the first configuration information.

[0138] 7) Information on the first identifier of the first DCI, the first identifier being used to indicate the scrambling sequence.

[0139] In this embodiment of the application, the network device can indicate the scrambling sequence used by the first DCI to the terminal device through the first configuration information, and the terminal device can perform the detection of the first DCI according to the scrambling sequence.

[0140] In some embodiments, the first configuration information may explicitly indicate the first identifier, for example, the first configuration information may contain the first identifier, or contain an index of the first identifier.

[0141] In some embodiments, the first configuration information may implicitly indicate the first identifier, for example, the first identifier may be associated with the resource location where the first configuration information is located, the scrambling sequence, or other information.

[0142] Based on the schemes shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information of the first identifier is used to indicate Radio Network Temporary Identity (RNTI) information; the RNTI information corresponds to the RNTI for detecting the first DCI, or the RNTI information corresponds to the RNTI associated with the first DCI. For example, when the network device sends the first DCI, it scrambles the first DCI based on the sequence determined by the first RNTI, and when the terminal device detects the first DCI, it descrambles the first DCI based on the sequence determined by the first RNTI.

[0143] For example, the information in the first identifier mentioned above may include RNTI or an index of RNTI.

[0144] In this embodiment, the information of the first identifier is used to determine the first identifier. The first DCI transmitted by the network device on the first transmission resource set is scrambled, wherein the sequence corresponding to the scrambling is determined based on the first identifier. In some embodiments, the network device transmits the aforementioned first configuration information, which includes the information of the first identifier. The terminal device determines the first identifier associated with the first DCI transmitted on the first transmission resource set based on the information of the first identifier, then determines the corresponding sequence based on the first identifier, and performs detection of the first DCI on the first transmission resource set based on the sequence.

[0145] In some implementations, the information of the first identifier is used to indicate RNTI information; the RNTI information corresponds to the RNTI applied to detect the first DCI; for example, the RNTI used to detect the first DCI includes one or more of SI-RNTI, P-RNTI, MCCH-RNTI, PEI-RNTI, RA-RNTI, MSGB-RNTI, Temporary C-RNTI, C-RNTI, CI-RNTI, MCS-C-RNTI, CS-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, TPC-SRS-RNTI, INT-RNTI, SFI-RNTI, SP-CSI-RNTI, PS-RNTI, AI-RNTI, G-RNTI, and G-CS-RNTI.

[0146] In some implementations, the network device sends first configuration information, which includes information for indicating a first identifier. The terminal device identifies the first identifier indicated by the first identifier information and performs DCI detection on a first transmission resource set.

[0147] In the scheme shown in the embodiments of this application, the network device can indicate the scrambling sequence corresponding to the first DCI to the terminal device through the first configuration information, so that the terminal device can perform DCI detection according to the scrambling sequence corresponding to the first DCI, thereby simplifying the complexity of the terminal device performing the first DCI detection, improving the detection efficiency and energy saving effect of the first DCI.

[0148] 8) Information about the spatial filter of the first DCI.

[0149] In some embodiments, network devices and terminal devices use beams for data transmission and reception. These beams are also called spatial filters; correspondingly, the transmitting beam is called a spatial transmitting filter, and the receiving beam is called a spatial receiving filter. For each spatial transmitting filter, there can be a corresponding spatial receiving filter. When the network device uses the spatial transmitting filter to transmit the first DCI, the terminal device uses the corresponding spatial receiving filter to receive.

[0150] In some embodiments, the first configuration information sent by the network device includes spatial filter indication information. The terminal device determines the corresponding spatial receiving filter based on the spatial filter indication information and receives and detects the first DCI according to the determined spatial receiving filter.

[0151] Based on the schemes shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information of the spatial filter includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information.

[0152] Specifically, spatial filter indication information may include Transmission Configuration Indicator (TCI) state information, Channel State Information Reference Signal Resource Indicator (CRI) information, or Synchronization Signal Physical Broadcast Channel Block (SS / PBCH) index information.

[0153] In some implementations, the network device sends first configuration information, which includes indication information for indicating the spatial filter corresponding to the first DCI. The terminal device performs DCI detection on the first transmission resource set based on the spatial filter indicated by the indication information.

[0154] In this embodiment of the application, the network device can indicate the beam information corresponding to the first DCI to the terminal device through at least one of the TCI status information, CRI information, and SS / PBCH block index information, so that the terminal device can determine the corresponding receiving beam according to the beam information corresponding to the first DCI and perform DCI detection using the ending beam. This simplifies the complexity of the terminal device performing the first DCI detection and improves the detection efficiency and energy saving effect of the first DCI.

[0155] 9) Information on the encoding method of the first DCI.

[0156] In some embodiments, the first configuration information may include encoding indication information (i.e., information on the encoding method of the first DCI mentioned above), which is used to indicate the encoding method adopted by the first DCI, such as at least one of Polar code, LDPC code, or small block length encoding.

[0157] In some implementations, the first DCI can be encoded in different ways, such as using polar codes, low-density parity check codes (LDPC), or small-block codes.

[0158] In some implementations, the network device sends first configuration information, which includes indication information for indicating the encoding method corresponding to the first DCI. The terminal device performs the detection of the first DCI on the first transmission resource set based on the encoding method indicated by the indication information.

[0159] 10) Information on the modulation scheme of the first DCI.

[0160] In some embodiments, the first configuration information may include modulation information, which may indicate the modulation method corresponding to the first DCI.

[0161] In some embodiments, the modulation scheme corresponding to the first DCI may include one or more of the following: Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 16-bit Quadrature Amplitude Modulation (QAM), and 64QAM.

[0162] In some implementations, the network device sends first configuration information, which includes indication information for indicating the modulation scheme corresponding to the first DCI. The terminal device performs the detection of the first DCI on the first transmission resource set based on the modulation scheme indicated by the indication information.

[0163] 11) Information on the demodulation reference signal (DMRS) corresponding to the first DCI.

[0164] Based on the solutions shown in any one or more embodiments of the above-described embodiments of this application, in some embodiments, the information of the DMRS includes at least one of the following:

[0165] Time-domain location information, frequency-domain location information, pattern information, and sequence initialization information.

[0166] The aforementioned time-domain location information can indicate the time-domain location of the demodulation reference signal DMRS corresponding to the first DCI, such as the starting time-domain location of DMRS or the time-domain range where DMRS is located, or the time-domain symbol position or number occupied by DMRS.

[0167] The aforementioned frequency domain location information can indicate the frequency domain location of the demodulation reference signal DMRS corresponding to the first DCI, such as the starting frequency domain location of the DMRS, or the frequency domain range where the DMRS is located, or the subcarrier information occupied by the DMRS in each PRB, or the PRB information where the DMRS resource is located.

[0168] The above pattern information can indicate the pattern / mode of DMRS. For example, the above pattern information can contain the pattern identifier or index of DMRS.

[0169] The sequence initialization information mentioned above can be used to indicate the initialization information of the signal sequence of the DMRS. For example, it can indicate the index or identifier corresponding to the initial sequence of the DMRS.

[0170] In this embodiment of the application, the first configuration information may include demodulation reference signal (DMRS) information. The demodulation reference signal (DMRS) information includes at least one of the following: time-domain location information, frequency-domain location information, pattern information, or DMRS sequence initialization information of the DMRS associated with the first DCI or the DMRS associated with the PDCCH carrying the first DCI.

[0171] In the scheme shown in the embodiments of this application, the network device can indicate at least one of the time-domain location information, frequency-domain location information, pattern information, and sequence initialization information of the DMRS corresponding to the first DCI through the first configuration information, so that the terminal device can detect the first DCI according to at least one of the above-mentioned time-domain location information, frequency-domain location information, pattern information, and sequence initialization information of the DMRS, thereby simplifying the complexity of the terminal device to perform the detection of the first DCI and improving the detection efficiency and energy saving effect of the first DCI.

[0172] In some implementations, the network device sends first configuration information, which includes indication information for indicating the DMRS corresponding to the first DCI. The terminal device performs the detection of the first DCI on the first transmission resource set based on the DMRS indicated by the indication information.

[0173] In some implementations, the first configuration information sent by the network device includes index information. The network device configures the correspondence between the index information and the PDCCH DMRS. The terminal device can determine the corresponding PDCCH DMRS based on the index information and the correspondence.

[0174] In the scheme shown in the embodiments of this application, the network device can pre-configure configuration information for detecting the first DCI to the terminal device, including one or more of the following: indicating DCI format, number of information bits, aggregation level, number of CCEs, number or size of transmission resources, starting position of transmission resources, scrambling sequence, spatial filter (beam), coding method, modulation method, DMRS, etc., so that the terminal device can perform detection of the first DCI according to the first configuration information, thereby simplifying the complexity of the terminal device detecting the first DCI and improving the efficiency and energy saving effect of the terminal device receiving the first DCI.

[0175] It should be noted that the configuration information sent by the network device for detecting the first DCI (i.e., the first configuration information mentioned above) can be a single configuration information or can include multiple configuration information; this application embodiment does not limit this.

[0176] Step 520: The network device sends the second DCI to the terminal device; the terminal device receives the second DCI according to the information indicated by the first DCI.

[0177] In this embodiment of the application, after receiving the first DCI, the terminal device can receive the second DCI through the information indicated by the first DCI.

[0178] In some implementations, the first DCI carries all or part of the information in the transmission information of the second DCI, wherein the transmission information includes transmission resources and / or transmission parameters.

[0179] In some implementations, when the first DCI carries a portion of the transmission resource information of the second DCI, the other portion of the transmission resource information of the second DCI is determined by configuration information sent by the network device.

[0180] In some implementations, when the first DCI carries a portion of the transmission parameters of the second DCI, the other portion of the transmission parameters of the second DCI is determined by configuration information sent by the network device.

[0181] Based on the solutions shown in any one or more embodiments of the above-described embodiments of this application, in some embodiments, the first DCI is used to indicate a portion of the transmitted information of the PDSCH or PUSCH; the second DCI is used to indicate the remaining portion of the transmitted information of the PDSCH or PUSCH; or...

[0182] The second DCI is used to indicate the transmission information of PDSCH or PUSCH.

[0183] In the embodiments of this application, the first DCI and the second DCI can respectively indicate a portion of the transmission information of PDSCH and / or PUSCH. Optionally, the terminal device receives PDSCH or sends PUSCH based on the transmission information of PDSCH and / or PUSCH indicated by the first DCI and the second DCI respectively.

[0184] In some embodiments, the transmission information of the PDSCH and / or PUSCH may include at least one of the transmission resources of the PDSCH and / or PUSCH and transmission parameters (such as transmission mode, message format, aggregation level, beam direction, encoding method, etc.).

[0185] In other embodiments, the first DCI may not carry the transmission information of PDSCH and / or PUSCH, which is carried or indicated by the second DCI.

[0186] The scheme shown in the embodiments of this application allows the first DCI and the second DCI to carry partial information from the transmission information of PDSCH and / or PUSCH, respectively, thereby making full use of the information bits of the first DCI and the second DCI and improving the resource utilization of DCI. Alternatively, the second DCI can carry the transmission information of PDSCH and / or PUSCH. Since the second DCI can be instructed by the first DCI to transmit related information, carrying the transmission information of PDSCH and / or PUSCH through the second DCI can simplify the complexity of the terminal device receiving the transmission information of PDSCH and / or PUSCH, and improve the efficiency and energy saving effect of the terminal device in receiving the transmission information of PDSCH and / or PUSCH.

[0187] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the transmission information of the second DCI includes at least one of the following information, and the first DCI indicates all or part of the following at least one information:

[0188] 1) Information on the second transmission resource set where the transmission resources of the second DCI are located.

[0189] In this embodiment of the application, the network device can indicate the transmission resource set where the second DCI is located to the terminal device through the first DCI or other configuration information.

[0190] The transport resource set in which the second DCI resides may include CORESET and / or the search space.

[0191] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information of the second transmission resource set includes: time-frequency resource information of the second transmission resource set, and / or, frequency domain resource information of the second transmission resource set;

[0192] Time-domain resource information includes at least one of the following: time-domain location indication information, time-domain length indication information, and period indication information;

[0193] Frequency domain resource information includes at least one of the following: frequency domain location indication information, frequency domain size indication information.

[0194] The aforementioned time-domain location indication information is used to indicate the starting time-domain location of the time-frequency resources of the second transmission resource set, such as the starting symbol, the starting time slot, etc.

[0195] The aforementioned time-domain length indication information is used to indicate the duration in which the time-frequency resources of the second transmission resource set occupy time in the time domain, such as the number of symbols, the number of time slots, etc.

[0196] The aforementioned period indication information is used to indicate at least one of the following: period length, number of periods, etc., of the second transmission resource set.

[0197] The aforementioned frequency domain location indication information is used to indicate the starting frequency domain location of the frequency domain resources of the second transmission resource set, such as the starting subcarrier sequence number, the starting PRB index, etc.

[0198] Frequency domain size indication information is used to indicate the size of the frequency domain resources of the second transmission resource set, such as the number of subcarriers, the number of PRBs, the number of Resource Block Groups (RBGs), the frequency band size, the bandwidth size, etc. An RBG consists of K consecutive PRBs.

[0199] In the scheme shown in the embodiments of this application, the network device can indicate the time-frequency position of the transmission resource set where the second DCI is located to the terminal device through the first DCI, so that the terminal device can detect and receive the second DCI in the corresponding time-frequency resources. This can simplify the complexity of the terminal device receiving the second DCI and improve the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0200] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information of the second transmission resource set includes at least one of the following:

[0201] Index information of the second set of transmission resources;

[0202] The value of the first parameter determines the starting time-domain resource location and / or time-domain length of the second transmission resource set; or, in other words, the value of the first parameter is used to determine the starting time-domain resource location and / or time-domain length of the second transmission resource set.

[0203] The value of the second parameter determines the starting frequency domain resource location and / or frequency domain length of the second transmission resource set; or, in other words, the value of the second parameter is used to determine the starting frequency domain resource location and / or frequency domain length of the second transmission resource set.

[0204] In some implementations, the network device is configured with at least one CORESET or at least one search space. The first DCI may contain index information corresponding to the index information of the CORESET and / or search space (i.e., the second transmission resource set). Based on this index information, the terminal device can determine the CORESET information and / or search space information associated with the second DCI. Based on this index information, the terminal device detects the second DCI in the CORESET and / or search space associated with the second DCI.

[0205] In some embodiments, the first parameter value can be a Start and Length Indicator Value (SLIV) or a Time Resource Indicator Value (TRIV). The first parameter value is determined based on the OFDM symbol information corresponding to the time-domain start position of the second transmission resource set and the number of OFDM symbols included in the second transmission resource set.

[0206] In some embodiments, the second parameter can be a Frequency Resource Indicator Value (FRIV), which is determined based on the frequency domain resource element information corresponding to the frequency domain start position of the second transmission resource set and the number of frequency domain resource elements included in the second transmission resource set. The frequency domain resource elements include PRBs, sub-channels, resource block groups (RBGs), etc.

[0207] In the scheme shown in the embodiments of this application, the network device can indicate the transmission resource set where the second DCI is located by the index and / or parameter value in the first DCI, which can reduce the occupation of information bits of the first DCI and improve the resource utilization of the first DCI.

[0208] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the second transmission resource set is associated with the first transmission resource set where the first DCI is located.

[0209] In some implementations, the network device can send configuration information (such as the first configuration information mentioned above or other configuration information) to the terminal device. This configuration information is used to configure the first transmission resource set and the second transmission resource set. The second transmission resource set is associated with the first transmission resource set. The terminal device can determine the location of the second transmission resource set based on the first transmission resource set associated with the first DCI.

[0210] In the scheme shown in the embodiments of this application, the network device can pre-configure the association relationship between the second transmission resource set and the first transmission resource set to the terminal device. Through this association relationship, combined with the first transmission resource set where the first DCI is located, the terminal device can determine the second transmission resource set where the second DCI is located, thereby achieving the effect of saving configuration signaling.

[0211] 2) Information on the time interval between the first DCI and the second DCI.

[0212] In this embodiment, the network device can indicate the time interval between the first DCI and the second DCI to the terminal device through the first DCI or other configuration information. Based on this time interval, the terminal device can determine the time domain location of the transmission resources of the second DCI by recognizing the time domain location of the transmission resources of the first DCI. Alternatively, the network device can indicate the time interval between the first transmission resource set containing the first DCI and the second transmission resource set containing the second DCI to the terminal device through the first DCI or other configuration information. Based on this time interval, the terminal device can determine the time domain location of the second transmission resource set corresponding to the second DCI by recognizing the time domain location of the first transmission resource set containing the first DCI.

[0213] Based on the schemes shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the temporal location of the transmission resources of the second DCI is associated with the temporal location of the first DCI.

[0214] In this embodiment, the temporal location of the transmission resources of the second DCI is associated with the temporal location of the first DCI. Accordingly, the terminal device can implicitly determine the transmission resources of the second DCI based on the transmission resources of the first DCI. This scheme can simplify the complexity of the network device indicating the temporal location of the second DCI to the terminal device, save signaling resources, and improve the efficiency of indicating the temporal location of the second DCI.

[0215] Based on the solutions shown in any one or more embodiments of the above-described embodiments of this application, in some embodiments, the transmission resource of the second DCI is located after the time domain position of the first DCI and is the first transmission resource belonging to the second transmission resource set; or,

[0216] The transmission resource of the second DCI is the time domain location of the first DCI plus a specified offset, and is the first transmission resource in the second transmission resource set; the specified offset is determined by the time interval information.

[0217] In some implementations, the transmission resources of the second DCI can be implicitly determined by the transmission resources where the first DCI resides, as follows:

[0218] Network devices indicate or configure a second DCI to be associated with a first search space via a first DCI or other configuration information. That is, the second DCI is transmitted within the first search space, which is a periodic transmission resource. If the first transmission resource transmitting the first DCI is located at time t, the terminal device can use the first transmission resource belonging to the first search space after time t as the transmission resource for transmitting the second DCI, or use the first transmission resource belonging to the first search space after time (t+k) as the transmission resource for transmitting the second DCI. Here, k represents the number of time units (e.g., the number of time slots, OFDM symbols, milliseconds, or microseconds). The value of k is determined based on network configuration information, protocol information, or the time interval between the first and second DCIs within the first DCI. Time t is determined based on the time-domain start position or the time-domain end position of the first transmission resource.

[0219] For example, please refer to Figure 6, which shows a schematic diagram of the transmission resources of a DCI according to an embodiment of this application. As shown in Figure 6, the network device configures a first search space for transmitting the second DCI with a period of 10ms. If the terminal device detects the first DCI in the first set of transmission resources (as shown in the box 610 filled with diagonal lines in Figure 6), and the time domain end position of the transmission resource of the first DCI is time t1, then the first resource that can be used to transmit the second DCI after time t1 is time t2. At this time, the terminal detects the second DCI on the transmission resource at time t2 (which belongs to the resource in the first search space); or, if k = 4 time slots, the time domain position of the first available transmission resource after t1 + 4 time slots is t3. At this time, the terminal detects the second DCI on the transmission resource corresponding to time t3 (which belongs to the resource in the first search space).

[0220] In the scheme shown in the embodiments of this application, the network device can indicate the temporal position relationship between the transmission resources of the first DCI and the transmission resources of the second DCI through the first DCI or other configuration information. The terminal device can determine the temporal position of the transmission resources of the second DCI through the transmission resources of the first DCI. This scheme can simplify the complexity of the network device indicating the temporal position of the second DCI to the terminal device, save signaling resources, and improve the indication efficiency of the temporal position of the second DCI.

[0221] 3) The resource location information of the second DCI transmission resources in the second transmission resource set.

[0222] In this embodiment of the application, the network device can indicate the resource location of the transmission resource of the second DCI in the second transmission resource set to the terminal device through the first DCI or other configuration information, so that the terminal device can receive the second DCI at the resource location in the second transmission resource set. This enables the terminal device to receive the second DCI at the accurate resource location, which can simplify the complexity of the terminal device receiving the second DCI and improve the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0223] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the resource location information includes at least one of the following: time-domain resource start location information, frequency-domain resource start information, and the start location of the logical resource unit.

[0224] The aforementioned time-domain resource start position information can be used to indicate the start time-domain position of the transmission resource of the second DCI in the second transmission resource set, such as the symbol position.

[0225] The aforementioned frequency domain resource start information can be used to indicate the frequency domain and time domain position of the transmission resource of the second DCI in the second transmission resource set, such as the subcarrier position or PRB position.

[0226] The starting position of the aforementioned logical resource unit can be used to indicate the starting logical resource unit position of the transmission resource of the second DCI in the second transmission resource set, such as the starting CCE position or the starting REG position.

[0227] In the embodiments of this application, the network device can indicate to the terminal device at least one of the time domain start position, frequency domain start position, and logical resource unit start position of the transmission resources of the second DCI in the second transmission resource set through the first DCI or other configuration information. This can reduce the resource range of the terminal device in detecting the second DCI in the second transmission resource set, simplify the complexity of the terminal device receiving the second DCI, and improve the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0228] In some embodiments, all or part of the resource location information used to transmit the second DCI can be indicated by the first DCI. Specifically, the resource location information used to transmit the second DCI may include: time-domain resource start location information, frequency-domain resource start information, and the start location of logical resource units; wherein, logical resource units include CCE, REG, etc.

[0229] In some implementations, the second DCI is mapped to a CORESET or search space, which includes multiple transport resources that can be used to transmit the DCI or PDCCH. The starting position of the resource used for mapping or transmitting the second DCI can be indicated by the indication information in the first DCI.

[0230] For example, the second DCI is mapped to a search space that includes 16 CCEs, corresponding to CCE indices 1 to 15. The first DCI includes indication information indicating that the resource starting position of the second DCI is the fifth CCE (i.e., CCE index 4). Based on this indication information, the terminal device detects the second DCI in the search space starting from the fifth CCE. If the aggregation level corresponding to the second DCI is 4, that is, the transmission resources of the second DCI include 4 CCEs, then the second DCI is retrieved from the fifth to the eighth CCEs in the search space; if the aggregation level corresponding to the second DCI is 8, that is, the transmission resources of the second DCI include 8 CCEs, then the second DCI is retrieved from the fifth to the twelfth CCEs in the search space; and so on.

[0231] 4) Information on the quantity or size of resources in the second DCI.

[0232] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the information on the number or size of resources of the second DCI includes: information on the number of time-domain resources, information on the number of frequency-domain resources, and information on the number of logical resource units.

[0233] The information on the amount of time-domain resources mentioned above can be used to indicate the amount of time-domain resources occupied by the second DCI, such as the number of symbols occupied.

[0234] The information on the quantity of frequency domain resources mentioned above can be used to indicate the quantity of frequency domain resources occupied by the second DCI, such as the number of subcarriers occupied.

[0235] The information on the number of logical resource units mentioned above can be used to indicate the number of logical resource units occupied by the second DCI, such as the number of CCEs or REGs occupied.

[0236] In the embodiments of this application, the network device can indicate the resource quantity or size of the second DCI to the terminal device through the first DCI or other configuration information. The terminal device can detect the second DCI by the resource quantity or size of the second DCI, thereby simplifying the complexity of the terminal device receiving the second DCI and improving the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0237] In some embodiments, the resource size or resource quantity information used to transmit the second DCI can be indicated by the first DCI. Specifically, the resource size or resource quantity information used to transmit the second DCI may include time-domain resource quantity information, frequency-domain resource quantity information, and the number of logical resource units; wherein, logical resource units include CCE, REG, etc.

[0238] In some implementations, the second DCI is mapped to a CORESET or search space, which includes multiple transport resources that can be used to transmit the DCI or PDCCH. The size or number of resources used for mapping or transmitting the second DCI can be indicated by the indication information in the first DCI.

[0239] For example, the second DCI is mapped into a search space that includes 16 CCEs. The first DCI includes indication information indicating that the resource size of the second DCI is 4 CCEs. Based on this indication information, the terminal device detects the second DCI in the search space according to aggregation level 4 (i.e., corresponding to a size of 4 CCEs).

[0240] 5) Information on the aggregation level corresponding to the second DCI.

[0241] 6) Information on the number of CCEs corresponding to the second DCI.

[0242] In some implementations, the second DCI is transmitted in a CORESET or search space configured with multiple aggregation levels. The network device can carry indication information in the first DCI, indicating the aggregation level information corresponding to the second DCI.

[0243] In some implementations, the second DCI is transmitted in the CORESET or search space, and the number of CCEs corresponding to the transmission resources of the second DCI includes M values. The network device carries indication information in the first DCI, indicating the number of CCEs corresponding to the transmission resources of the second DCI.

[0244] For example, the second DCI is transmitted in the first search space, which is configured with four aggregation levels: 1, 2, 4, and 8. The first DCI includes indication information, the length of which is determined based on the number of aggregation levels configured in the search space. N represents the number of aggregation levels corresponding to the first search space (N=4), and K represents the number of bits in the information field of the first DCI used to indicate the aggregation level corresponding to the second DCI. This indicates the rounding up operation.

[0245] In the embodiments of this application, the network device can indicate the aggregation level and / or number of CCEs of the second DCI to the terminal device through the first DCI or other configuration information. The terminal device can detect the second DCI through the aggregation level and / or number of CCEs of the second DCI, thereby simplifying the complexity of the terminal device receiving the second DCI and improving the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0246] 7) Information in the DCI format corresponding to the second DCI.

[0247] Based on the solutions shown in any one or more embodiments of the above embodiments of this application, in some embodiments, when the information of the DCI format corresponding to the second DCI indicates multiple DCI formats, the multiple DCI formats correspond to the same or different number of bits.

[0248] In this embodiment of the application, the system can pre-set multiple DCI formats for the second DCI, and different DCI formats can have the same number of bits.

[0249] In some embodiments, different DCI formats may have different bit counts. In this case, different DCI formats can ensure the same bit count by padding with zeros.

[0250] In some embodiments, the second DCI transmitted on the second transport resource set may correspond to N DCI formats, where N is a positive integer. The first DCI or other configuration information includes indication information for indicating the DCI format corresponding to the second DCI transmitted on the second transport resource set.

[0251] In some embodiments, the first DCI may include index information, the network device configures the correspondence between the index information and the DCI format of the second DCI, and the terminal device can determine the DCI format corresponding to the second DCI based on the index information and the correspondence.

[0252] For example, based on protocol information, it can be determined that the second DCI corresponds to eight DCI formats. The first DCI includes 3 bits of indication information, and the values ​​of these bits correspond to the eight DCI formats. Using this 3-bit indication information carried in the first DCI, the terminal device can determine the DCI format corresponding to the second DCI transmitted on the second transmission resource set. The correspondence between the bit values ​​and DCI formats can be a one-to-one or a one-to-many correspondence. Optionally, when the correspondence between the bit values ​​and DCI formats includes a one-to-many correspondence, the multiple DCI formats correspond to the same number of information bits.

[0253] For example, based on protocol information, it can be determined that the second DCI corresponds to 8 DCI formats. The first DCI includes 8 bits of indication information (such as a bitmap), with each of the 8 bits corresponding to one of the 8 DCI formats. By observing the value of a bit, the corresponding DCI format for the second DCI can be indicated. For example, a bit value of 1 indicates that the second DCI detection is performed based on the DCI format corresponding to that bit, while a bit value of 0 indicates that the second DCI does not support the DCI format corresponding to that bit.

[0254] In some embodiments, the number of bits included in the indication information is determined based on the number of DCI formats corresponding to the second DCI; wherein, the number of DCI formats corresponding to the second DCI is determined based on protocol information or network configuration information; for example, if the protocol defines 8 formats corresponding to the second DCI, and the network device configures 4 of them through configuration information, that is, supports the 4 DCI formats in subsequent transmissions, then the information field in the first DCI may include 2 bits to indicate one of the 4 DCI formats; or, the information field in the first DCI may include a 4-bit bitmap to indicate the 4 DCI formats respectively.

[0255] In the embodiments of this application, the network device can indicate the DCI format of the second DCI to the terminal device through the first DCI or other configuration information. The terminal device can receive / detect the second DCI through the indicated DCI format, thereby simplifying the complexity of the terminal device receiving the second DCI and improving the efficiency and energy saving effect of the terminal device receiving the transmission information of the second DCI.

[0256] Based on the schemes shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the number of bits of information used to indicate the DCI format corresponding to the second DCI is associated with the number of formats of the second DCI, or with the number of sets corresponding to the formats of the second DCI, wherein the set corresponding to the formats of the second DCI includes one or more DCI formats.

[0257] In some implementations, the network device configures a set of DCI formats for the second DCI transmitted on the second transmission resource set. The first DCI may include indication information for indicating one or more DCI formats of the second DCI. The one or more DCI formats are subsets of the DCI format set. The terminal device performs the detection of the second DCI on the second transmission resource set based on the one or more DCI formats indicated by the indication information.

[0258] For example, a network device sends configuration information (such as the first configuration information mentioned above or other configuration information) to indicate that the DCI format of the second DCI transmitted on the second transmission resource set includes four DCI format subsets. Each DCI format subset includes one or more DCI formats. Optionally, the DCI formats included in each DCI format subset correspond to the same number of bits. If multiple DCI formats include different numbers of information bits, the DCI format with fewer information bits is padded (e.g., one or more bits with a value of 0 are added to the end of the DCI information bits) to make it the same as the number of information bits corresponding to the first DCI format. The first DCI format is determined based on protocol information, network configuration information, or the DCI format with the most information bits in the DCI format subset. The first DCI includes 2 bits of indication information, which are used to indicate the four DCI format subsets respectively. Based on the indication information carried in the first DCI, the terminal device determines one or more DCI formats included in the indicated DCI format subset and performs second DCI detection on the second transmission resource based on the one or more DCI formats.

[0259] 8) Information on the number of information bits corresponding to the second DCI.

[0260] The aforementioned number of information bits can correspond to the maximum number of bits in the second DCI.

[0261] In some embodiments, the second DCI transmitted on the second transport resource set corresponds to one or more information bit lengths.

[0262] For example, based on protocol information, the number of four types of information bits corresponding to the second DCI can be determined. The first DCI includes 2 bits of indication information. The values ​​of these bits correspond to the number of information bits corresponding to the four types of DCI. Through this 2-bit indication information carried in the first DCI, the terminal device can determine the number of information bits corresponding to the second DCI transmitted on the second transmission resource set. The correspondence between the bit values ​​and the number of information bits in the DCI can be a one-to-one or a one-to-many correspondence. In some embodiments, the number of bits included in the indication information is determined based on the number of candidate values ​​for the number of information bits corresponding to the second DCI; wherein the number of candidate values ​​for the number of information bits corresponding to the second DCI is determined based on protocol information or network configuration information.

[0263] For example, based on protocol information, the number of four types of information bits corresponding to the second DCI can be determined. The first DCI includes 4 bits of indication information (such as a bitmap), which correspond to the four types of information bit quantities. Through the 4 bits of indication information carried in the first DCI, the terminal device can determine the number of one or more types of information bits corresponding to the second DCI transmitted on the second transmission resource set. For example, the four types of information bit quantities are a1, a2, a3, and a4, where the values ​​of a1, a2, a3, and a4 are all different. The first DCI includes a 4-bit bitmap, where the first to fourth bits from left to right correspond to a1, a2, a3, and a4, respectively. If the 4-bit value is 0011, it means that the number of information bits corresponding to the second DCI includes a3 and a4; if the 4-bit value is 1110, it means that the number of information bits corresponding to the second DCI includes a1, a2, and a3.

[0264] 9) RNTI information used to detect the second DCI.

[0265] In some embodiments, the RNTI information corresponds to the RNTI used to detect the second DCI, or the RNTI information corresponds to the RNTI associated with scrambling the second DCI; for example, it includes SI-RNTI, P-RNTI, MCCH-RNTI, PEI-RNTI, RA-RNTI, MSGB-RNTI, Temporary C-RNTI, C-RNTI, CI-RNTI, MCS-C-RNTI, CS-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, TPC-SRS-RNTI, INT-RNTI, SFI-RNTI, SP-CSI-RNTI, PS-RNTI, AI-RNTI, G-RNTI, G-CS-RNTI, etc. If the terminal device's RNTI includes the RNTI corresponding to the RNTI information, then the terminal device needs to detect the second DCI. If the terminal device's RNTI does not include the RNTI corresponding to the RNTI information, then the terminal device does not need to detect the second DCI.

[0266] 10) Information on the encoding method of the second DCI.

[0267] In some embodiments, the encoding information of the second DCI is the encoding method corresponding to the second DCI, such as Polar code, LDPC code, small block length encoding, or convolutional code.

[0268] In some implementations, the first DCI includes indication information to indicate the encoding method corresponding to the second DCI.

[0269] In some implementations, the second DCI and the first DCI use the same or related encoding methods, and the terminal device can determine the encoding method of the associated second DCI based on the encoding method of the first DCI.

[0270] 11) Information on the modulation scheme of the second DCI.

[0271] The modulation scheme corresponding to the second DCI includes one of the following: BPSK, QPSK, 16QAM, 64QAM, 256QAM, etc.; the first DCI includes indication information to indicate the modulation scheme corresponding to the second DCI.

[0272] In some implementations, the first DCI includes index information, and the value of the index information corresponds to the candidate values ​​of the modulation scheme of the second DCI. For example, the first index value corresponds to the first modulation scheme among the candidate values, the second index value corresponds to the second modulation scheme among the candidate values, and so on.

[0273] 12) Information about the spatial filter associated with the second DCI.

[0274] In some embodiments, the spatial filter information includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information.

[0275] In some implementations, the network device transmits the second DCI via a transmitting beam (or spatial transmitting filter), and the corresponding terminal device receives it using a receiving beam. The first DCI carries indication information to indicate the beam information associated with the second DCI. Specifically, this indication information may indicate TCI-state information, CSI-RS resource indication information, or SS / PBCH block index information. In some implementations, the first DCI includes index information, and the values ​​of the index information correspond to the aforementioned TCI-state information, CSI-RS resource indication information, or SS / PBCH block index information. For example, the first index value corresponds to the first TCI-state among the candidate values, the second index value corresponds to the second TCI-state, and so on.

[0276] 13) Information on the DMRS corresponding to the second DCI.

[0277] In some embodiments, the DMRS information includes at least one of the following:

[0278] Time-domain location information, frequency-domain location information, pattern information, and sequence initialization information.

[0279] In some implementations, a PDCCH is transmitted on a second transport resource set to carry a second DCI. To detect the PDCCH, the network device sends a PDCCH-DMRS, carrying indication information in the first DCI to indicate the PDCCH-DMRS information associated with the second DCI. For example, multiple PDCCH-DMRS patterns are determined based on protocol information, and indication information is carried in the first DCI to indicate the PDCCH-DMRS pattern index associated with the second DCI.

[0280] In some implementations, a PDSCH is transmitted on a second transport resource set to carry a second DCI. To detect the PDSCH, the network device sends a PDSCH-DMRS, carrying indication information in the first DCI to indicate the PDSCH-DMRS information associated with the second DCI. For example, multiple PDSCH-DMRS patterns are determined based on protocol information, and indication information is carried in the first DCI to indicate the PDSCH-DMRS pattern index associated with the second DCI.

[0281] 14) Information on the mapping method of CCE to REG corresponding to the second DCI.

[0282] In some embodiments, the above mapping methods include interleaved and non-interleaved methods, or distributed and localized methods.

[0283] If the second DCI is mapped to the CORESET or search space, the mapping method from CCE to REG during the mapping process includes interleaving and non-interleaving, or distributed mapping and local mapping. The first DCI can carry indication information to indicate the mapping method used when mapping the second DCI resources.

[0284] 15) Information about the antenna port corresponding to the second DCI.

[0285] In some embodiments, the information of the antenna port corresponding to the second DCI includes antenna port quantity information and / or antenna port number information.

[0286] In some implementations, the second DCI supports both single-antenna port transmission and multi-antenna port transmission. The first DCI carries indication information to indicate whether the second DCI uses single-antenna port transmission. For example, the second DCI supports both single-antenna port transmission and two-antenna port transmission, with the first DCI carrying indication information to specify whether the second DCI uses single-antenna port or two-antenna port transmission. As another example, the second DCI supports single-antenna port transmission, two-antenna port transmission, and four-antenna port transmission, with the first DCI carrying antenna port indication information to indicate whether the second DCI uses single-antenna port transmission, two-antenna port transmission, or four-antenna port transmission, for example, using 2 bits to indicate single-antenna port transmission, two-antenna port transmission, or four-antenna port transmission. For example, the second DCI supports single-antenna port transmission, two-antenna port transmission, and four-antenna port transmission. Single-antenna port transmission is the default transmission mode of the second DCI. In this case, the first DCI does not need to indicate the antenna port information of the second DCI. If the second DCI transmits with two or four antenna ports, the first DCI carries antenna port indication information to indicate whether the second DCI uses two or four antenna ports for transmission. For example, it can indicate two-antenna port transmission or four-antenna port transmission with 1 bit.

[0287] 16) Power indication information of the second DCI.

[0288] In some embodiments, the first DCI includes indication information for determining the transmission power corresponding to the second DCI.

[0289] In some implementations, the power indication information includes a power difference (e.g., a decibel difference) or a power ratio, which is the transmission power of the second DCI relative to a first power value. The first power value is determined based on one of the following powers: the transmission power of the first DCI, the transmission power of the DMRS associated with the first DCI, the transmission power of the DMRS associated with the second DCI, the transmission power of the Primary Synchronization Signal (PSS), the transmission power of the Secondary Synchronization Signal (SSS), the transmission power of the Physical Broadcast Channel (PBCH), the transmission power of the PBCH-DMRS, or the transmission power of the CSI-RS included in the first CSI-RS resource. The PSS, SSS, and PBCH belong to the first SS / PBCH block, which is determined based on network configuration information; the first CSI-RS resource is determined based on network configuration information.

[0290] In the scheme shown in the embodiments of this application, the network device can indicate information for receiving the second DCI to the terminal device through the first DCI. This information includes one or more of the following: the transmission resource set, the time interval between the first DCI and the second DCI, the transmission resource location information, the mapping method of CCE to REG, the antenna port, power, DCI format, number of information bits, aggregation level, number of CCEs, number or size of transmission resources, scrambling sequence, spatial filter (beam direction), coding method, modulation method, DMRS, etc. This allows the terminal device to perform reception or detection of the second DCI based on the information indicated by the first DCI, thereby simplifying the complexity of the terminal device receiving the second DCI and improving the efficiency and energy saving effect of the terminal device receiving the second DCI.

[0291] Based on the schemes shown in any one or more embodiments of the above embodiments of this application, in some embodiments, the network device sends a first DCI and a second DCI to the terminal device, the first DCI and the second DCI being used to schedule PDSCH transmission and / or schedule PUSCH transmission.

[0292] Optionally, the first DCI is also called the first-order DCI (1 st -stage DCI), second DCI(2) nd -stage DCI) is also known as second-order DCI.

[0293] In one implementation, please refer to FIG7, which shows a schematic diagram of an information indication according to an embodiment of the present application. As shown in part (a) of FIG7, the first DCI is used to indicate the transmission parameters and / or transmission resources of the second DCI, and includes partial information for indicating the transmission resources and / or transmission parameters of PDSCH or PUSCH. The second DCI includes another part of information for indicating the transmission resources and / or transmission parameters of PDSCH or PUSCH. That is, the first DCI and the second DCI jointly schedule the transmission of PDSCH or PUSCH. In another implementation, as shown in part (b) of FIG7, the first DCI is used to indicate the transmission resources and / or transmission parameters of the second DCI. The second DCI includes transmission resources and transmission parameters for indicating the transmission of PDSCH or PUSCH. That is, the transmission of PDSCH or PUSCH is scheduled based on the second DCI.

[0294] Optionally, the network is configured with a first set of transmission resources for transmitting the first DCI.

[0295] Optionally, the first transmission resource set is a control resource set (CORESET) and / or a search space (SS): the transmission resources included in the control resource set are used to transmit DCI or PDCCH; optionally, the resources in the control resource set are not used to transmit PDSCH. The network device configures the start position and size of the frequency domain resources corresponding to the control resource set, as well as the size of the time domain resources, using configuration information. The search space is associated with the control resource set, and the network device configures the search space using configuration information, including configuring the time domain position of the search space, the aggregation levels supported in the search space, the number of candidate PDCCHs corresponding to each aggregation level, and the DCI formats included in the search space. The network device uses all or part of the transmission resources included in the CORESET to transmit the first DCI.

[0296] Optionally, the first DCI corresponds to C DCI formats, where C ≥ 1 and is an integer, preferably C = 1. For example, the terminal device can determine the format corresponding to the first DCI through protocol predefinition or based on network indication information, which can reduce the number of times the terminal device blindly detects the first DCI on the first transmission resource set. For example, if the first transmission resource set is a search space including 16 CCEs and the format corresponding to the first DCI corresponds to 8 CCEs, then the search space includes 2 transmission resources that can be used to transmit the first DCI, and the terminal can detect the first DCI on these two transmission resources respectively.

[0297] Optionally, the number of information bits in the first DCI corresponds to D different values, or D different quantities; preferably, D = 1. For example, the terminal device determines the number of information bits corresponding to a first DCI through protocol predefinition or based on network indication information, and the terminal device detects the first DCI on the first transmission resource set according to this number. It should be understood that different DCI formats can correspond to the same number of information bits. DCI formats with the same number of information bits do not increase the complexity of terminal detection of the first DCI. DCI formats with the same number of information bits can be distinguished by other means: such as by scrambling the DCI with RNTI information, or by indicating the format of the DCI through indication information included in the DCI. Neither of these methods increases the number of PDCCHs to be detected.

[0298] Characteristics of the first DCI:

[0299] The first transmission resource set is used to transmit the first DCI. In some implementations, the first DCI is carried by the PDCCH. The network device sends configuration information (such as the first configuration information in the above embodiment). This configuration information is used to configure the first information corresponding to the first DCI. The first information includes at least one of the following:

[0300] The following information is provided: DCI format information corresponding to the first DCI; number of information bits corresponding to the first DCI; aggregation level information corresponding to the first DCI or the downlink control channel carrying the first DCI; number of CCEs corresponding to the first DCI or the downlink control channel carrying the first DCI; number of transmission resources or transmission resource size information for transmitting the first DCI or the downlink control channel; first identifier indication information (used to determine the first identifier); spatial filter indication information associated with the DCI; encoding indication information (used to indicate the encoding method used by the DCI); modulation information (used to indicate the modulation method corresponding to the first DCI); demodulation reference signal (DMRS) information (used to indicate the time domain position information, frequency domain position information, pattern information, or DMRS sequence initialization information of the DMRS associated with the first DCI or the DMRS associated with the PDCCH carrying the first DCI).

[0301] In some embodiments, the first DCI carries indication information for detecting the second DCI, and the terminal detects the second DCI on the second transmission resource based on the indication information of the first DCI.

[0302] The indication information used to detect the second DCI is referred to as the second information. In one implementation, a part of the second information is carried by configuration information sent by the network device (such as the first configuration information or other configuration information mentioned above), and another part of the second information is carried by the first DCI. In another implementation, the second information is carried by the first DCI.

[0303] In some implementations, the second information mentioned above includes at least one of the following:

[0304] Second transmission resource information; resource location indication information corresponding to the transmission resource used to transmit the second DCI; resource quantity indication information corresponding to the second DCI; aggregation level information corresponding to the second DCI; CCE quantity information corresponding to the second DCI; DCI format information corresponding to the second DCI transmitted on the second transmission resource; information bit count information corresponding to the DCI transmitted on the second transmission resource; RNTI information of the second DCI; encoding information; modulation information (used to indicate the modulation method corresponding to the second DCI); spatial filter indication information associated with the second DCI; demodulation reference signal information (used to indicate the time domain position, frequency domain position, pattern, or DMRS sequence initialization information of the DMRS); mapping method of CCE to REG; antenna port information; power indication information.

[0305] In some embodiments, the second transmission resource information includes time-domain resource information and frequency-domain resource information corresponding to the second transmission resource, wherein the time-domain resource information includes at least one of the following: time-domain position indication information, time-domain length indication information, and period indication information; the frequency-domain resource information includes at least one of the following: frequency-domain position indication information and frequency-domain size indication information.

[0306] Specifically, for example, the method of indicating the transmission resource / second transmission resource set where the second DCI is located through the indication information in the first DCI includes one of the following:

[0307] Method 1: The first DCI includes indication information to indicate the CORESET information or search space information carrying the second DCI. In one implementation, the CORESET or search space carrying the second DCI can be determined based on the indication information. The first transmission resource belonging to the CORESET or the search space after the first transmission resource carrying the first DCI is used as the transmission resource for transmitting the second DCI, as shown in Figure 6, which corresponds to the case of k=0.

[0308] Method 2: The first DCI includes indication information for indicating CORESET information or search space information carrying the second DCI, and includes time interval indication information: based on the time interval determined by the time interval indication information and the time domain position of the first transmission resource carrying the first DCI, the time domain position of the second transmission resource carrying the second DCI is determined, as shown in Figure 6, wherein the parameter k is determined according to the time interval indication information.

[0309] Method 3: The first DCI includes time interval indication information, and the CORESET information or search space information carrying the second DCI is determined based on the network configuration information;

[0310] Method 4: The first DCI includes time interval indication information. Based on this time interval indication information, the value of the time interval parameter k is determined. Based on the time domain position t of the first transmission resource carrying the first DCI, the time domain position of the second transmission resource carrying the second DCI is determined. For example, the time domain position of the second transmission resource is the position corresponding to t+k, where t represents the time domain start or end position of the first transmission resource. Another example: The first DCI includes time interval indication information. Based on this time interval indication information, the number of time slots k is determined. The time slot position of the second transmission resource is the time slot corresponding to t+k. Based on protocol information or network configuration information, the starting position of the second transmission resource is determined to correspond to the position of the first time domain symbol in that time slot.

[0311] Method 5: The first DCI includes a first parameter, the value of which is determined based on the time-domain start position and time-domain resource length corresponding to the second transmission resource;

[0312] Method 6: The first DCI includes a second parameter, the value of which is determined based on the frequency domain start position and frequency domain resource length corresponding to the second transmission resource;

[0313] Method 7: The first DCI includes a third parameter, which is used to indicate the starting CCE index information of the second DCI: the number of CCEs corresponding to the second DCI is determined based on the network configuration information;

[0314] Method 8: The first DCI includes a fourth parameter, which is used to indicate the number of CCEs carrying the second DCI: the starting CCE position corresponding to the second DCI is determined based on protocol information or network configuration information, such as determining the second DCI to start mapping from the first CCE in the search space based on network configuration information;

[0315] Method 9: The first DCI includes a fifth parameter, the value of which is determined based on the starting CCE index information and the number of CCEs carrying the second DCI; for example, the value of the fifth parameter corresponds to the Resource Indicator Value (RIV), which is determined based on the starting CCE index corresponding to the second DCI (i.e., the index corresponding to the first CCE used to map the second DCI) and the number of CCEs corresponding to the second DCI.

[0316] It should be understood that the above methods can be used individually or in combination to indicate the transmission resource / set of transmission resources in which the second DCI resides. For example, methods 1 and 9 can be combined, with method 1 indicating the search space information associated with the second DCI and method 9 indicating the CCE information occupied by the second DCI in that search space. As another example, methods 1, 4, and 9 can be combined, with method 1 indicating the search space information associated with the second DCI, method 4 determining the first transmission resource located in that search space after time t+k, determined based on the first transmission resource t, as the second transmission resource, and method 9 determining the CCE information occupied by the second DCI in that second transmission resource.

[0317] Characteristics of the second DCI:

[0318] The network sends a second DCI on the second transport resource, which is used to schedule PDSCH or PUSCH.

[0319] In some implementations, the first DCI includes a first part of the parameters for scheduling PDSCH or PUSCH, and the second DCI includes a second part of the parameters for scheduling PDSCH or PUSCH. That is, the terminal device performs PDSCH detection or PUSCH transmission based on the indication information included in the first DCI and the second DCI.

[0320] In some other implementations, the first DCI does not include parameters for scheduling PDSCH or PUSCH, while the second DCI includes parameters for scheduling PDSCH or PUSCH. That is, the terminal device performs PDSCH detection or PUSCH transmission based on the indication information included in the second DCI.

[0321] In this embodiment, by using the first DCI to indicate parameters such as the format, aggregation level, and number of candidate PDCCHs corresponding to the second DCI, the complexity of terminal detection of the second DCI can be reduced, thereby achieving energy saving. Specifically, the DCI used to schedule PDSCH or PUSCH transmission is transmitted in a two-stage DCI manner, namely, the first-stage DCI and the second-stage DCI. The first-stage DCI indicates the transmission resources and / or transmission parameters of the second-stage DCI, thereby reducing the detection complexity of the second-stage DCI. The first indication information is used to indicate whether the terminal needs to detect the first-stage DCI. The first indication information is carried by a sequence, which can reduce the detection complexity of the first-stage DCI.

[0322] Please refer to Figure 8, which shows a block diagram of a wireless communication device according to an embodiment of this application. This wireless communication device has the functions performed by a terminal device in the methods shown in Figure 2 or Figure 5 above. As shown in Figure 8, the device may include: a receiving module 801, a transmitting module 802, and a processing module 803; wherein, the transmitting module 802 is used to transmit signals to a network device; the receiving module 801 is used to receive information sent by the network device; and the processing module 803 is used to perform data transmission and reception related processing.

[0323] Receiver module 801 is used to receive the first DCI;

[0324] The receiving module 801 is further configured to receive a second DCI based on the information indicated by the first DCI.

[0325] In one possible implementation, the first DCI is used to indicate all or part of the information in the transmission information of the second DCI.

[0326] In one possible implementation, where the first DCI indicates a portion of the transmission information of the second DCI, the remaining portion of the transmission information of the second DCI is indicated to the terminal device by the network device.

[0327] In one possible implementation, the first DCI is used to indicate a portion of the transmitted information in the PDSCH or PUSCH; the second DCI is used to indicate the remaining portion of the transmitted information in the PDSCH or PUSCH; or...

[0328] The second DCI is used to indicate the transmission information of PDSCH or PUSCH.

[0329] In one possible implementation, the receiving module 801 is configured to detect the first DCI in a first set of transmission resources configured in the network device.

[0330] In one possible implementation, the first DCI is transmitted on all or part of the resources in the first set of transport resources; or...

[0331] The first DCI is transmitted on all resources in the first transmission resource set except for those reserved for the reference signal.

[0332] In one possible implementation, the receiving module 801 is further configured to receive first configuration information sent by the network device;

[0333] The receiving module 801 is configured to detect the first DCI in the first transmission resource set according to the first configuration information.

[0334] In one possible implementation, the first configuration information includes at least one of the following:

[0335] Information about the DCI format of the first DCI; information about the number of information bits of the first DCI; information about the aggregation level of the first DCI; information about the number of CCEs of the first DCI; information about the number or size of the transmission resources of the first DCI; information about the starting position of the transmission resources of the first DCI; information about the first identifier of the first DCI, the first identifier being used to indicate the scrambling sequence; information about the spatial filter of the first DCI; information about the encoding method of the first DCI; information about the modulation method of the first DCI; and information about the demodulation reference signal (DMRS) corresponding to the first DCI.

[0336] In one possible implementation, the information on the quantity or size of the transmission resources of the first DCI includes a first parameter, the value of which indicates the proportion of the transmission resources of the first DCI to the resources available for DCI transmission in the first set of transmission resources.

[0337] In one possible implementation, the information of the first identifier is used to indicate RNTI information; the RNTI information corresponds to the RNTI that detected the first DCI, or the RNTI information corresponds to the RNTI associated with the first DCI.

[0338] In one possible implementation, the transmission information of the second DCI includes at least one of the following:

[0339] Information on the second transmission resource set where the transmission resources of the second DCI are located; information on the time interval between the first DCI and the second DCI; information on the resource location of the transmission resources of the second DCI in the second transmission resource set; information on the number or size of resources of the second DCI; information on the aggregation level corresponding to the second DCI; information on the number of CCEs corresponding to the second DCI; information on the DCI format corresponding to the second DCI; information on the number of information bits corresponding to the second DCI; RNTI information used to detect the second DCI; information on the encoding method of the second DCI; information on the modulation method of the second DCI; information on the spatial filter associated with the second DCI; information on the DMRS corresponding to the second DCI; information on the mapping method of the CCEs corresponding to the second DCI to the REG; information on the antenna port corresponding to the second DCI; and power indication information of the second DCI.

[0340] In one possible implementation, the information of the second transmission resource set includes: time-frequency resource information of the second transmission resource set, and / or, frequency domain resource information of the second transmission resource set;

[0341] The time-domain resource information includes at least one of the following: time-domain location indication information, time-domain length indication information, and period indication information;

[0342] The frequency domain resource information includes at least one of the following: frequency domain location indication information and frequency domain size indication information.

[0343] In one possible implementation, the information of the second transmission resource set includes at least one of the following:

[0344] Index information of the second set of transmission resources;

[0345] The value of the first parameter, the starting time-domain resource location and / or time-domain length of the second transmission resource set are determined based on the value of the first parameter;

[0346] The value of the second parameter, the starting frequency domain resource location and / or frequency domain length of the second transmission resource set, are determined based on the value of the first parameter.

[0347] In one possible implementation, the second set of transport resources is associated with the first set of transport resources containing the first DCI.

[0348] In one possible implementation, the temporal location of the transmission resource of the second DCI is associated with the temporal location of the first DCI.

[0349] In one possible implementation, the transmission resource of the second DCI is the first transmission resource in the second transmission resource set, located after the time domain position of the first DCI; or...

[0350] The transmission resource of the second DCI is the first transmission resource in the second transmission resource set after adding a specified offset to the time domain position of the first DCI; the specified offset is determined by the information of the time interval.

[0351] In one possible implementation, the resource location information includes at least one of the following:

[0352] Time-domain resource start position information, frequency-domain resource start information, and logical resource unit start position.

[0353] In one possible implementation, the information regarding the quantity or size of resources in the second DCI includes:

[0354] Information on the quantity of time-domain resources, the quantity of frequency-domain resources, and the quantity of logical resource units.

[0355] In one possible implementation, when the information of the DCI format corresponding to the second DCI indicates multiple DCI formats, the multiple DCI formats correspond to the same number of bits.

[0356] In one possible implementation, the number of bits used to indicate the DCI format corresponding to the second DCI is associated with the number of formats of the second DCI, or with the number of sets corresponding to the formats of the second DCI, wherein the set of formats corresponding to the second DCI includes one or more DCI formats.

[0357] In one possible implementation, the information of the spatial filter includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information.

[0358] In one possible implementation, the DMRS information includes at least one of the following:

[0359] Time-domain location information, frequency-domain location information, pattern information, and sequence initialization information.

[0360] Please refer to Figure 9, which shows a block diagram of a wireless communication device according to an embodiment of this application. This wireless communication device has the functions performed by a network device in the methods shown in Figures 3 or 5 above. As shown in Figure 9, the device may include: a transmitting module 901, a receiving module 902, and a processing module 903; wherein, the transmitting module 901 is used to transmit signals to the network device; the receiving module 902 is used to receive information sent by the network device; and the processing module 903 is used to perform data transmission and reception related processing.

[0361] The sending module 901 sends a first DCI to the terminal device, the first DCI being used by the terminal device to receive a second DCI;

[0362] The sending module 901 is also used to send a second DCI to the terminal device.

[0363] In one possible implementation, the first DCI is used to indicate all or part of the information in the transmission information of the second DCI.

[0364] In one possible implementation, where the first DCI indicates a portion of the transmission information of the second DCI, the remaining portion of the transmission information of the second DCI is indicated to the terminal device by the network device.

[0365] In one possible implementation, the first DCI is used to indicate a portion of the transmitted information in the PDSCH or PUSCH; the second DCI is used to indicate the remaining portion of the transmitted information in the PDSCH or PUSCH; or...

[0366] The second DCI is used to indicate the transmission information of PDSCH or PUSCH.

[0367] In one possible implementation, the sending module 901 is further configured to configure a first transmission resource set to the terminal device so that the terminal device can detect the first DCI in the first transmission resource set.

[0368] In one possible implementation, the first DCI is transmitted on all or part of the resources in the first set of transport resources; or...

[0369] The first DCI is transmitted on all resources in the first transmission resource set except for those reserved for the reference signal.

[0370] In one possible implementation, the sending module 901 is further configured to send first configuration information to the terminal device; the first configuration information is used by the terminal device to detect the first DCI in the first transmission resource set according to the first configuration information.

[0371] In one possible implementation, the first configuration information includes at least one of the following:

[0372] Information about the DCI format of the first DCI; information about the number of information bits of the first DCI; information about the aggregation level of the first DCI; information about the number of CCEs of the first DCI; information about the number or size of the transmission resources of the first DCI; information about the starting position of the transmission resources of the first DCI; information about the first identifier of the first DCI, the first identifier being used to indicate the scrambling sequence; information about the spatial filter of the first DCI; information about the encoding method of the first DCI; information about the modulation method of the first DCI; and information about the demodulation reference signal (DMRS) corresponding to the first DCI.

[0373] In one possible implementation, the information on the quantity or size of the transmission resources of the first DCI includes a first parameter, the value of which indicates the proportion of the transmission resources of the first DCI to the resources available for DCI transmission in the first set of transmission resources.

[0374] In one possible implementation, the information of the first identifier is used to indicate RNTI information; the RNTI information corresponds to the RNTI that detected the first DCI, or the RNTI information corresponds to the RNTI associated with the first DCI.

[0375] In one possible implementation, the transmission information of the second DCI includes at least one of the following:

[0376] Information on the second transmission resource set where the transmission resources of the second DCI are located; information on the time interval between the first DCI and the second DCI; information on the resource location of the transmission resources of the second DCI in the second transmission resource set; information on the number or size of resources of the second DCI; information on the aggregation level corresponding to the second DCI; information on the number of CCEs corresponding to the second DCI; information on the DCI format corresponding to the second DCI; information on the number of information bits corresponding to the second DCI; RNTI information used to detect the second DCI; information on the encoding method of the second DCI; information on the modulation method of the second DCI; information on the spatial filter associated with the second DCI; information on the DMRS corresponding to the second DCI; information on the mapping method of the CCEs corresponding to the second DCI to the REG; information on the antenna port corresponding to the second DCI; and power indication information of the second DCI.

[0377] In one possible implementation, the information of the second transmission resource set includes: time-frequency resource information of the second transmission resource set, and / or, frequency domain resource information of the second transmission resource set;

[0378] The time-domain resource information includes at least one of the following: time-domain location indication information, time-domain length indication information, and period indication information;

[0379] The frequency domain resource information includes at least one of the following: frequency domain location indication information and frequency domain size indication information.

[0380] In one possible implementation, the information of the second transmission resource set includes at least one of the following:

[0381] Index information of the second set of transmission resources;

[0382] The value of the first parameter, the starting time-domain resource location and / or time-domain length of the second transmission resource set are determined based on the value of the first parameter;

[0383] The value of the second parameter, the starting frequency domain resource location and / or frequency domain length of the second transmission resource set, are determined based on the value of the first parameter.

[0384] In one possible implementation, the second set of transport resources is associated with the first set of transport resources containing the first DCI.

[0385] In one possible implementation, the temporal location of the transmission resource of the second DCI is associated with the temporal location of the first DCI.

[0386] In one possible implementation, the transmission resource of the second DCI is the first transmission resource in the second transmission resource set, located after the time domain position of the first DCI; or...

[0387] The transmission resource of the second DCI is the first transmission resource in the second transmission resource set after adding a specified offset to the time domain position of the first DCI; the specified offset is determined by the information of the time interval.

[0388] In one possible implementation, the resource location information includes at least one of the following:

[0389] Time-domain resource start position information, frequency-domain resource start information, and logical resource unit start position.

[0390] In one possible implementation, the information regarding the quantity or size of resources in the second DCI includes:

[0391] Information on the quantity of time-domain resources, the quantity of frequency-domain resources, and the quantity of logical resource units.

[0392] In one possible implementation, when the information of the DCI format corresponding to the second DCI indicates multiple DCI formats, the multiple DCI formats correspond to the same number of bits.

[0393] In one possible implementation, the number of bits used to indicate the DCI format corresponding to the second DCI is associated with the number of formats of the second DCI, or with the number of sets corresponding to the formats of the second DCI, wherein the set of formats corresponding to the second DCI includes one or more DCI formats.

[0394] In one possible implementation, the information of the spatial filter includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information.

[0395] In one possible implementation, the DMRS information includes at least one of the following:

[0396] Time-domain location information, frequency-domain location information, pattern information, and sequence initialization information.

[0397] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0398] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0399] Please refer to Figure 10, which shows a schematic diagram of the structure of a communication device 1000 provided in one embodiment of this application. The communication device 1000 may include: a processor 1001, a receiver 1002, a transmitter 1003, a memory 1004, and a bus 1005.

[0400] The processor 1001 includes one or more processing cores. The processor 1001 executes various functional applications and information processing by running software programs and modules.

[0401] The receiver 1002 and transmitter 1003 can be implemented as a communication component, which can be a communication chip. This communication chip can also be called a transceiver. The memory 1004 is connected to the processor 1001 via a bus 1005. The memory 1004 can be used to store computer programs, and the processor 1001 can be used to execute these computer programs to implement the various steps in the above method embodiments.

[0402] Furthermore, the memory 1004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0403] The receiver 1002 and the processor 1001 execute the computer program to enable the communication device 1000 to perform the various steps of the method shown in FIG2, FIG3 or FIG5, which are executed by the terminal device or the network device.

[0404] In one exemplary embodiment, the communication device 1000 is the aforementioned terminal device, and the receiver 1002 and processor 1001 execute the computer program to enable the communication device 1000 to implement the various steps performed by the terminal device in the method shown in FIG2, FIG3 or FIG5.

[0405] In one exemplary embodiment, the communication device 1000 is the aforementioned network device, and the transmitter 1003 and processor 1001 execute the computer program to enable the communication device 1000 to implement the various steps performed by the network device in the method shown in FIG2, FIG3 or FIG5.

[0406] This application also provides a computer-readable storage medium storing a computer program. The computer program is loaded and executed by a processor to implement all or part of the steps performed by a terminal device or network device in the methods shown in Figures 2, 3, or 5. For example, this application provides a computer-readable storage medium storing a computer program that is loaded and executed by a processor to implement all or part of the steps performed by a terminal device in the methods shown in Figures 2, 3, or 5. As another example, this application provides a computer-readable storage medium storing a computer program that is loaded and executed by a processor to implement all or part of the steps performed by a network device in the methods shown in Figures 2, 3, or 5.

[0407] This application also provides a chip including an integrated circuit and firmware disposed within the integrated circuit. The chip is configured to operate in a communication device to cause the communication device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5, which are executed by a terminal device or a network device. For example, the chip is configured to operate in a terminal device to cause the terminal device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5. As another example, the chip is configured to operate in a network device to cause the network device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5.

[0408] This application also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor of a communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5, as performed by a terminal device or a network device. For example, this application provides a computer program product, which includes computer instructions stored in a computer-readable storage medium; a processor of a terminal device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the terminal device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5, as performed by the terminal device. As another example, this application provides a computer program product, which includes computer instructions stored in a computer-readable storage medium; a processor of a network device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the network device to perform all or part of the steps in the methods shown in Figures 2, 3, or 5, as performed by the network device.

[0409] This application also provides a computer program executed by a processor of a communication device to implement all or part of the steps performed by a terminal device or a network device in the methods shown in Figures 2, 3, or 5. For example, this application provides a computer program executed by a processor of a terminal device to implement all or part of the steps performed by the terminal device in the methods shown in Figures 2, 3, or 5. As another example, this application provides a computer program executed by a processor of a network device to implement all or part of the steps performed by the network device in the methods shown in Figures 2, 3, or 5.

[0410] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0411] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

A method of wireless communication, comprising: The method is executed by a terminal device, and the method includes: Receive the first DCI; The second DCI is received based on the information indicated by the first DCI. The method of claim 1, wherein The first DCI is used to indicate all or part of the information transmitted by the second DCI. The method according to claim 2, characterized in that In cases where the first DCI indicates a portion of the transmission information of the second DCI, the remaining portion of the transmission information of the second DCI is indicated to the terminal device by the network device. The method according to any one of claims 1 to 3, characterized in that, The first DCI is used to indicate a portion of the transmitted information in the PDSCH or PUSCH; the second DCI is used to indicate the remaining portion of the transmitted information in the PDSCH or PUSCH; or, The second DCI is used to indicate the transmission information of PDSCH or PUSCH. The method according to any one of claims 1 to 4, characterized in that Receiving the first DCI includes: The first DCI is detected in the first set of transmission resources configured in the network device. The method according to claim 5, characterized in that, The first DCI is transmitted on all or part of the resources in the first transmission resource set; or, The first DCI is transmitted on all resources in the first transmission resource set except for those reserved for the reference signal. The method according to claim 5 or 6, characterized in that The method further includes: Receive the first configuration information sent by the network device; Detecting the first DCI in the first set of transmission resources configured in the network device includes: Based on the first configuration information, the first DCI is detected in the first transmission resource set. The method of claim 7, wherein The first configuration information includes at least one of the following: Information about the DCI format of the first DCI; information about the number of information bits of the first DCI; information about the aggregation level of the first DCI; information about the number of CCEs of the first DCI; information about the number or size of the transmission resources of the first DCI; information about the starting position of the transmission resources of the first DCI; information about the first identifier of the first DCI, which is used to indicate the scrambling sequence; information about the spatial filter of the first DCI. Information on the encoding method of the first DCI; information on the modulation method of the first DCI; information on the demodulation reference signal DMRS corresponding to the first DCI. The method of claim 8, wherein The information on the quantity or size of the transmission resources of the first DCI includes a first parameter, the value of which indicates the proportion of the transmission resources of the first DCI to the resources available for DCI transmission in the first transmission resource set. The method of claim 8, wherein The information of the first identifier is used to indicate RNTI information; the RNTI information corresponds to the RNTI that detected the first DCI, or the RNTI information corresponds to the RNTI associated with the first DCI. The method according to claim 2 or 3, characterized in that The transmission information of the second DCI includes at least one of the following: information about the second transmission resource set where the transmission resource of the second DCI is located; information about the time interval between the first DCI and the second DCI; information about the resource location of the transmission resource of the second DCI in the second transmission resource set; information about the number or size of the resources of the second DCI; information about the aggregation level corresponding to the second DCI; information about the number of CCEs corresponding to the second DCI; information about the DCI format corresponding to the second DCI; and information about the number of information bits corresponding to the second DCI. The RNTI information used to detect the second DCI; information about the encoding method of the second DCI; Information on the modulation scheme of the second DCI; information on the spatial filter associated with the second DCI; Information about the DMRS corresponding to the second DCI; information about the mapping method from the CCE corresponding to the second DCI to the REG; Information about the antenna port corresponding to the second DCI; power indication information of the second DCI. The method of claim 11, wherein The information of the second transmission resource set includes: time-frequency resource information of the second transmission resource set, and / or, frequency domain resource information of the second transmission resource set; The time-domain resource information includes at least one of the following: time-domain location indication information, time-domain length indication information, and period indication information; The frequency domain resource information includes at least one of the following: frequency domain location indication information and frequency domain size indication information. The method according to claim 11 or 12, characterized in that The information of the second transmission resource set includes at least one of the following: index information of the second transmission resource set; a first parameter value, wherein the starting time-domain resource position and / or time-domain length of the second transmission resource set is determined based on the first parameter value; and a second parameter value, wherein the starting frequency-domain resource position and / or frequency-domain length of the second transmission resource set is determined based on the first parameter value. The method according to any one of claims 11 to 13, characterized in that The second transmission resource set is associated with the first transmission resource set containing the first DCI. The method according to any one of claims 11 to 14, characterized in that The temporal location of the transmission resources of the second DCI is associated with the temporal location of the first DCI. The method of claim 15, wherein The transmission resource of the second DCI is the first transmission resource in the second transmission resource set after the time domain position of the first DCI; or, the transmission resource of the second DCI is the first transmission resource in the second transmission resource set after the time domain position of the first DCI plus a specified offset; the specified offset is determined by the information of the time interval. The method according to any one of claims 11 to 16, characterized in that The resource location information includes at least one of the following: time-domain resource start location information, frequency-domain resource start information, and the start location of a logical resource unit. The method according to any one of claims 11 to 17, characterized in that The information on the number or size of resources in the second DCI includes: information on the number of time-domain resources, information on the number of frequency-domain resources, and information on the number of logical resource units. The method according to any one of claims 11 to 18, characterized in that When the information of the DCI format corresponding to the second DCI indicates multiple DCI formats, the multiple DCI formats correspond to the same number of bits. The method of claim 19, wherein The number of bits used to indicate the DCI format corresponding to the second DCI is associated with the number of formats of the second DCI, or with the number of sets corresponding to the formats of the second DCI, wherein the set corresponding to the formats of the second DCI includes one or more DCI formats. The method according to any one of claims 8 to 20, characterized in that The spatial filter information includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information. The method according to any one of claims 8 to 21, characterized in that The DMRS information includes at least one of the following: time-domain location information, frequency-domain location information, pattern information, and sequence initialization information. A method of wireless communication, comprising: The method is performed by a network device, and the method includes: Send a first DCI to the terminal device, wherein the first DCI is used by the terminal device to receive the second DCI; Send a second DCI to the terminal device. The method of claim 23, wherein The first DCI is used to indicate all or part of the information transmitted by the second DCI. The method of claim 24, wherein In cases where the first DCI indicates a portion of the transmission information of the second DCI, the remaining portion of the transmission information of the second DCI is indicated to the terminal device by the network device. The method according to any one of claims 23 to 25, characterized in that, The first DCI is used to indicate a portion of the transmitted information in the PDSCH or PUSCH; the second DCI is used to indicate the remaining portion of the transmitted information in the PDSCH or PUSCH; or, The second DCI is used to indicate the transmission information of PDSCH or PUSCH. The method according to any one of claims 23 to 26, characterized in that The method further includes: Configure a first transmission resource set to the terminal device so that the terminal device can detect the first DCI in the first transmission resource set. The method according to claim 27, characterized in that, The first DCI is transmitted on all or part of the resources in the first transmission resource set; or, The first DCI is transmitted on all resources in the first transmission resource set except for those reserved for the reference signal. The method according to claim 27 or 28, characterized in that The method further includes: Send first configuration information to the terminal device; the first configuration information is used by the terminal device to detect the first DCI in the first transmission resource set according to the first configuration information. The method of claim 29, wherein The first configuration information includes at least one of the following: Information about the DCI format of the first DCI; information about the number of information bits of the first DCI; information about the aggregation level of the first DCI; information about the number of CCEs of the first DCI; information about the number or size of the transmission resources of the first DCI; information about the starting position of the transmission resources of the first DCI; information about the first identifier of the first DCI, which is used to indicate the scrambling sequence; information about the spatial filter of the first DCI. Information on the encoding method of the first DCI; information on the modulation method of the first DCI; information on the demodulation reference signal DMRS corresponding to the first DCI. The method of claim 30, wherein The information on the quantity or size of the transmission resources of the first DCI includes a first parameter, the value of which indicates the proportion of the transmission resources of the first DCI to the resources available for DCI transmission in the first transmission resource set. The method of claim 30, wherein The information of the first identifier is used to indicate RNTI information; the RNTI information corresponds to the RNTI that detected the first DCI, or the RNTI information corresponds to the RNTI associated with the first DCI. The method according to claim 24 or 25, characterized in that The transmission information of the second DCI includes at least one of the following: information about the second transmission resource set where the transmission resource of the second DCI is located; information about the time interval between the first DCI and the second DCI; information about the resource location of the transmission resource of the second DCI in the second transmission resource set; information about the number or size of the resources of the second DCI; information about the aggregation level corresponding to the second DCI; information about the number of CCEs corresponding to the second DCI; information about the DCI format corresponding to the second DCI; and information about the number of information bits corresponding to the second DCI. The RNTI information used to detect the second DCI; information about the encoding method of the second DCI; Information on the modulation scheme of the second DCI; information on the spatial filter associated with the second DCI; Information about the DMRS corresponding to the second DCI; information about the mapping method from the CCE corresponding to the second DCI to the REG; Information about the antenna port corresponding to the second DCI; power indication information of the second DCI. The method of claim 33, wherein The information of the second transmission resource set includes: time-frequency resource information of the second transmission resource set, and / or, frequency domain resource information of the second transmission resource set; The time-domain resource information includes at least one of the following: time-domain location indication information, time-domain length indication information, and period indication information; The frequency domain resource information includes at least one of the following: frequency domain location indication information and frequency domain size indication information. The method according to claim 33 or 34, characterized in that The information of the second transmission resource set includes at least one of the following: index information of the second transmission resource set; a first parameter value, wherein the starting time-domain resource position and / or time-domain length of the second transmission resource set is determined based on the first parameter value; and a second parameter value, wherein the starting frequency-domain resource position and / or frequency-domain length of the second transmission resource set is determined based on the first parameter value. The method according to any one of claims 33 to 35, characterized in that The second transmission resource set is associated with the first transmission resource set containing the first DCI. The method according to any one of claims 33 to 36, characterized in that The temporal location of the transmission resources of the second DCI is associated with the temporal location of the first DCI. The method according to claim 37, characterized in that, The transmission resource of the second DCI is the first transmission resource in the second transmission resource set after the time domain position of the first DCI; or, the transmission resource of the second DCI is the first transmission resource in the second transmission resource set after the time domain position of the first DCI plus a specified offset; the specified offset is determined by the information of the time interval. The method according to any one of claims 33 to 38, characterized in that The resource location information includes at least one of the following: time-domain resource start location information, frequency-domain resource start information, and the start location of a logical resource unit. The method according to any one of claims 33 to 39, characterized in that The information on the number or size of resources in the second DCI includes: information on the number of time-domain resources, information on the number of frequency-domain resources, and information on the number of logical resource units. The method according to any one of claims 33 to 40, characterized in that When the information of the DCI format corresponding to the second DCI indicates multiple DCI formats, the multiple DCI formats correspond to the same number of bits. The method of claim 41, wherein The number of bits used to indicate the DCI format corresponding to the second DCI is associated with the number of formats of the second DCI, or with the number of sets corresponding to the formats of the second DCI, wherein the set corresponding to the formats of the second DCI includes one or more DCI formats. The method according to any one of claims 30 to 42, characterized in that The spatial filter information includes at least one of the following: TCI status information, CRI information, and SS / PBCH block index information. The method according to any one of claims 30 to 43, characterized in that The DMRS information includes at least one of the following: time-domain location information, frequency-domain location information, pattern information, and sequence initialization information. A wireless communication device, characterized by The device includes: The receiving module is used to receive the first DCI. The receiving module is further configured to receive a second DCI based on the information indicated by the first DCI. A wireless communication device, characterized by The device includes: The sending module sends a first DCI to the terminal device, and the first DCI is used by the terminal device to receive the second DCI; The sending module is also used to send a second DCI to the terminal device. A communication device characterized by comprising: The terminal device includes a processor, a memory, and a transceiver; The memory stores a computer program, and the processor executes the computer program to enable the communication device to implement the wireless communication method as described in any one of claims 1 to 44. A computer-readable storage medium, characterized by, The storage medium stores a computer program that is executed by the processor of the communication device to enable the communication device to implement the wireless communication method as described in any one of claims 1 to 44. A chip characterized by The chip includes an integrated circuit and firmware disposed in the integrated circuit, the chip being configured to operate in a communication device to cause the communication device to perform the wireless communication method as described in any one of claims 1 to 44. A computer program product, characterized in that The computer program product includes computer instructions stored in a computer-readable storage medium; the processor of the communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to perform the wireless communication method as described in any one of claims 1 to 44. A computer program, characterized in that The computer program is executed by the processor of the communication device to enable the communication device to implement the wireless communication method as described in any one of claims 1 to 44.

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