Communication method and device

Abstract

Disclosed are a communication method and device, the method comprising: a terminal device receiving first information from a network device, the first information being used for indicating a first configuration, and the first configuration being used for indicating a first time domain resource; a terminal device detects a first PDCCH scheduling a first signaling from a network device only on a first time domain resource. In the present application, the terminal device can only detect the first PDCCH on the first time domain resource, and does not detect the first PDCCH on the time domain resources other than the first time domain resource, thereby reducing the power consumption of the terminal device. Moreover, since the first time domain resource is configured for the terminal device by the network device, the network device can only send the first PDCCH on the first time domain resource and does not send the first PDCCH on a time domain resource other than the first time domain resource, thereby preventing the terminal device from missing the first PDCCH.

Description

Technical Field

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

[0002] Network devices can configure a search space for terminal devices. The search space can be a set of physical downlink control channel (PDCCH) candidates. Network devices can send PDCCHs to terminal devices on the PDCCH candidates, and terminal devices can detect PDCCHs from network devices on the PDCCH candidates to obtain scheduling information or other control information for the data channel.

[0003] Currently, when a terminal device is in a connected state, it needs to check the PDCCH according to the search space configured by the network device to avoid missing the network device's PDCCH. However, if the terminal device checks the PDCCH according to the search space configured by the network device for a long time, it will lead to an increase in the power consumption of the terminal device. Summary of the Invention

[0004] This application provides a communication method and apparatus for reducing terminal power consumption.

[0005] In a first aspect, embodiments of this application provide a communication method applicable to a terminal device, such as a terminal equipment, other devices including terminal equipment functions, a chip system (or chip), or other functional modules capable of implementing the functions of the terminal equipment, and such chip system or functional modules are, for example, disposed in the terminal equipment. The method includes: receiving first information from a network device, the first information indicating a first configuration, the first configuration indicating a first time-domain resource; and detecting a first PDCCH of scheduling first signaling from the network device only on the first time-domain resource.

[0006] In this embodiment, the PDCCH can schedule data or scheduling signaling. When the network device configures time-domain resources for detecting the PDCCH for the terminal device, it can configure time-domain resources for the PDCCH of scheduling signaling, so that the terminal device can only detect the PDCCH of scheduling signaling on the time-domain resources and not detect the PDCCH of scheduling signaling on time-domain resources outside the time-domain resources, thereby achieving more refined energy saving and reducing the power consumption of the terminal device.

[0007] In one possible implementation, the method further includes: detecting the first PDCCH from the network device on all resources in the first time-domain resource.

[0008] In this embodiment, after the network device configures the time domain resources of the scheduling signaling PDCCH for the terminal device, the terminal device can detect the scheduling signaling PDCCH on all resources in the time domain resources, thereby avoiding the terminal device missing the detection of the scheduling signaling PDCCH and ensuring communication reliability.

[0009] In one possible implementation, the method further includes: detecting a second PDCCH of scheduling first data from the network device on the first time-domain resource.

[0010] In this embodiment, in addition to detecting the PDCCH of scheduling signaling on the time domain resources of the PDCCH of scheduling signaling, the terminal device can also detect the PDCCH of scheduling data on the time domain resources, thereby improving the utilization rate of time domain resources of the terminal device or reducing the data transmission latency and ensuring the reliability of data transmission.

[0011] In one possible implementation, the first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the method further includes: detecting a second PDCCH of scheduling first data from the network device on the second time-domain resource.

[0012] In this embodiment, when the network device configures time-domain resources for detecting the PDCCH for the terminal device, it can configure time-domain resources for the PDCCH of scheduling data, enabling the terminal device to detect the PDCCH of scheduling data on these time-domain resources. This reduces the power consumption of the terminal device and achieves more refined energy saving. Alternatively, since the time-domain resources for the PDCCH of scheduling data are configured by the network device for the terminal device, the network device can send the PDCCH of scheduling data to the terminal device on these time-domain resources. This avoids the terminal device missing the detection of the PDCCH of scheduling data, ensuring communication reliability.

[0013] In one possible implementation, the method further includes detecting the second PDCCH from the network device on a portion of the resources in the second time-domain resources.

[0014] In this implementation, the terminal device can use artificial intelligence (AI) or other methods (such as application-layer notification) to determine the arrival time of data. If the terminal device determines that data will arrive within a certain time range, it can detect the PDCCH of the scheduled data on the time domain resources of the PDCCH within that time range. If the terminal device determines that no data will arrive within a certain time range, it can choose not to detect the PDCCH of the scheduled data on the time domain resources of the PDCCH within that time range. This reduces the power consumption of the terminal device.

[0015] In one possible implementation, the method further includes: determining a first time, wherein the first time is one or more of the start time, end time, or duration of the terminal device detecting the first PDCCH.

[0016] In this embodiment, when the network device configures time-domain resources for detecting PDCCH for the terminal device, it can configure time-domain resources for PDCCH of scheduling signaling. The terminal device can determine one or more of the start time, end time, or duration of the PDCCH of scheduling signaling to be detected. That is, the terminal device determines that PDCCH of scheduling signaling arrives within a certain time range, so that the terminal device can detect PDCCH from scheduling signaling only on the time-domain resources configured for PDCCH of scheduling signaling within that time range, and detect PDCCH of scheduling signaling from the network device on the time-domain resources configured for PDCCH of scheduling signaling outside that time range. This reduces the power consumption of the terminal device.

[0017] In one possible implementation, the first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time, which is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

[0018] In this embodiment, the network device can determine the specific time-domain information of the PDCCH of the scheduling signaling detected by the terminal device. Specifically, the network device sends the PDCCH of the scheduling signaling to the terminal device within a certain time range, and configures this time range (e.g., a second parameter) and the time-domain resources of the PDCCH of the scheduling signaling (e.g., a first parameter) to the terminal device. This allows the terminal device to detect the PDCCH from the scheduling signaling only on the time-domain resources of the PDCCH within that time range, and not on the time-domain resources of the PDCCH of the scheduling signaling outside that time range. This reduces the power consumption of the terminal device.

[0019] In one possible implementation, the first time is associated with a second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

[0020] In this embodiment, a method is provided for determining one or more of the start time, end time, or duration of the PDCCH for detecting scheduling signaling by a terminal device. For example, the terminal device or network device can determine one or more of the start time, end time, or duration of the PDCCH for detecting scheduling signaling (i.e., a time range) based on one or more of the start time, end time, or duration of data transmission by the terminal device. For instance, the start time of the PDCCH for detecting scheduling signaling is the start time of data transmission by the terminal device, and the end time of the PDCCH for detecting scheduling signaling is the end time of data transmission by the terminal device. Therefore, the terminal device only needs to determine the duration of the PDCCH for detecting scheduling signaling based on the data transmission time, which can reduce the power consumption of the terminal device.

[0021] In one possible implementation, the first signaling is associated with the first data.

[0022] In this embodiment, the prerequisite for the network device to send signaling to the terminal device can be that the terminal device sends data to the network device. For example, the signaling could be a radio link control (RLC) status report. The terminal device receives the RLC status report from the network device only after sending data, and then determines the data reception status based on the RLC status report. Therefore, the terminal device can detect and schedule the PDCCH of the signaling only within the data transmission time range, thereby reducing the power consumption of the terminal device or ensuring that the PDCCH of the scheduling signaling is not missed.

[0023] In one possible implementation, the first information is further used to indicate a third configuration, the third configuration being used to indicate a third time-domain resource; the method further includes: detecting a third PDCCH from a scheduling second signaling from the network device only on the third time-domain resource, the second signaling being different from the first signaling.

[0024] In this implementation, different signaling can be configured with different time-domain resources. The terminal device detects the PDCCH of different scheduling signaling from the network device on different time-domain resources. That is, it only detects the first PDCCH of the scheduling first signaling from the network device on the first time-domain resource, and only detects the third PDCCH of the scheduling second signaling from the network device on the third time-domain resource. The first time-domain resource can be different from the third time-domain resource. For example, if the transmission frequency of the first signaling is not very frequent, the first time-domain resource corresponding to the first signaling can be relatively sparse. If the transmission frequency of the second signaling is more frequent, the third time-domain resource corresponding to the second signaling can be relatively dense. Thus, the network device can flexibly configure the time-domain resources for the terminal device to detect the PDCCH of the scheduling signaling.

[0025] In one possible implementation, the first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the method further includes: detecting the first PDCCH from the network device only on the first frequency domain resource.

[0026] In this embodiment, when the network device configures frequency domain resources for detecting the PDCCH for the terminal device, it can configure frequency domain resources for the PDCCH of scheduling signaling. This allows the terminal device to detect the PDCCH of scheduling signaling only on these frequency domain resources, and not on frequency domain resources outside these resources. This reduces the power consumption of the terminal device and achieves more refined energy saving. Alternatively, since the frequency domain resources for the PDCCH of scheduling signaling are configured by the network device for the terminal device, the network device can send the PDCCH of scheduling signaling only to the terminal device on these frequency domain resources, and not to send it to the terminal device on frequency domain resources outside these resources. This avoids the terminal device missing the detection of the PDCCH of scheduling signaling, ensuring communication reliability.

[0027] In one possible implementation, the first signaling includes one or more of the following: radio resource control (RRC) messages; media access control element (MAC CE); and data plane signaling.

[0028] This implementation provides various signaling possibilities, such as RRC messages, MAC CE, and data plane signaling. In addition, signaling may include other signaling types, without limitation.

[0029] Secondly, embodiments of this application also provide a communication method, which can be applied to a network device, such as a network equipment, or other devices including network equipment functions, or a chip system (or chip) or other functional module, which can implement the functions of the network equipment, and is, for example, disposed in the network equipment. The method includes: sending first information to a terminal device, the first information indicating a first configuration, the first configuration indicating a first time domain resource; and sending a first PDCCH scheduling first signaling to the terminal device only on the first time domain resource.

[0030] In one possible implementation, the method further includes: sending a second PDCCH for scheduling first data to the terminal device on the first time domain resource.

[0031] In one possible implementation, the first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the method further includes: sending a second PDCCH for scheduling the first data to the terminal device on the second time-domain resource.

[0032] In one possible implementation, the second time-domain resource is a resource that can be used for terminal energy saving, or the second time-domain resource is a resource used by the terminal device to detect the PDCCH on a portion of the resource.

[0033] In one possible implementation, the first time-domain resource is a resource used by the terminal device to detect the PDCCH across all resources.

[0034] In one possible implementation, the first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time, which is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

[0035] In one possible implementation, the first time is associated with a second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

[0036] In one possible implementation, the first signaling is associated with the first data.

[0037] In one possible implementation, the first information is further used to indicate a third configuration, the third configuration being used to indicate a third time-domain resource; the method further includes: sending a third PDCCH of scheduling second signaling to the terminal device only on the third time-domain resource, the second signaling being different from the first signaling.

[0038] In one possible implementation, the first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the method further includes: sending the first PDCCH to the terminal device only on the first frequency domain resource.

[0039] In one possible implementation, the first signaling includes one or more of the following: RRC message; MAC CE; data plane signaling.

[0040] The beneficial effects of the second aspect and its implementation can be referred to the beneficial effects of the first aspect and any of its implementations.

[0041] Thirdly, embodiments of this application also provide a communication device. The communication device can be the terminal device described in the first aspect above. The communication device possesses the functions of the aforementioned terminal device. The communication device is, for example, a terminal equipment, or other equipment including terminal equipment functions, or a chip system (or chip) or other functional module. The chip system or functional module can implement the functions of the terminal equipment, and the chip system or functional module is, for example, disposed in the terminal equipment. In one optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). The transceiver unit can implement both sending and receiving functions. When the transceiver unit implements the sending function, it can be called a sending unit (sometimes also called a sending module), and when the transceiver unit implements the receiving function, it can be called a receiving unit (sometimes also called a receiving module). The sending unit and the receiving unit can be the same functional module, which is called the transceiver unit and can implement both sending and receiving functions; or, the sending unit and the receiving unit can be different functional modules, and the transceiver unit is a general term for these functional modules.

[0042] In one optional implementation, the transceiver unit is configured to receive first information from a network device, the first information being used to indicate a first configuration, the first configuration being used to indicate a first time-domain resource.

[0043] In an alternative implementation, the processing unit is configured to detect only the first PDCCH of the scheduling first signaling from the network device on the first time domain resource.

[0044] Fourthly, embodiments of this application also provide a communication device. The communication device can be the network device described in the second aspect above. The communication device possesses the functions of the aforementioned network device. The communication device is, for example, a network device, or other device including network device functions, or a chip system (or chip) or other functional module. The chip system or functional module can implement the functions of a network device, and the chip system or functional module is, for example, disposed within a network device. In one optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). The transceiver unit can implement both transmitting and receiving functions. When the transceiver unit implements the transmitting function, it can be called a transmitting unit (sometimes also called a transmitting module), and when the transceiver unit implements the receiving function, it can be called a receiving unit (sometimes also called a receiving module). The transmitting unit and the receiving unit can be the same functional module, which is called the transceiver unit and can implement both transmitting and receiving functions; or, the transmitting unit and the receiving unit can be different functional modules, and the transceiver unit is a collective term for these functional modules.

[0045] In one optional implementation, the transceiver unit is configured to send first information to the terminal device, the first information being used to indicate a first configuration, the first configuration being used to indicate a first time domain resource; and to send a first PDCCH for scheduling first signaling to the terminal device only on the first time domain resource.

[0046] Fifthly, a communication device is provided, which can be the terminal device described in the first aspect above. The communication device possesses the functions of the terminal device described above. The communication device is, for example, a terminal equipment, or other equipment including the functions of a terminal equipment, or a system-on-a-chip (or chip) or other functional module capable of implementing the functions of a terminal equipment, and the system-on-a-chip or functional module is, for example, disposed in a terminal equipment. The communication device includes a processor for executing the functions of the terminal device described in the first aspect above. Optionally, the communication device further includes a memory. The memory is used to store a computer program, and the processor is coupled to the memory. When the processor reads the computer program or instructions, it causes the communication device to execute the methods executed by the terminal device in the above aspects.

[0047] Sixthly, a communication device is provided, which can be a network device as described in the second aspect above. The communication device possesses the functions of the network device described above. The communication device is, for example, a network device, or other device including network device functions, or a system-on-a-chip (or chip) or other functional module capable of implementing the functions of a network device, and the system-on-a-chip or functional module is, for example, disposed within a network device. The communication device includes a processor for executing the functions of the network device as described in the second aspect above. Optionally, the communication device further includes a memory. The memory stores a computer program, and the processor is coupled to the memory. When the processor reads the computer program or instructions, it causes the communication device to execute the methods performed by the network device in the above aspects.

[0048] A seventh aspect provides a communication system including a network device. The network device is used to perform the method described in the second aspect above. For example, the network device can be implemented using the communication device described in the fourth or sixth aspect.

[0049] Optionally, the communication system further includes a terminal device. This terminal device is used to execute the method described in the first aspect. For example, the terminal device can be implemented using the communication device described in the third or fifth aspect.

[0050] Eighthly, a computer-readable storage medium is provided for storing a computer program or instructions that, when executed, cause the methods performed by the terminal device or network device in the above aspects to be implemented.

[0051] Ninthly, a computer program product containing instructions is provided, which, when the computer program or instructions are run on a computer, causes the methods described in the above aspects to be implemented.

[0052] In a tenth aspect, a chip system is provided, including a processor and an interface, the processor being configured to call and execute instructions from the interface to enable the chip system to implement the methods described above. Attached Figure Description

[0053] Figure 1 This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0054] Figure 2a A schematic diagram of a set of time-frequency resources corresponding to a search space provided in an embodiment of this application;

[0055] Figure 2b A schematic diagram of a set of temporal resources corresponding to a search space provided in an embodiment of this application;

[0056] Figure 2c This is a schematic diagram of a PDCCH detection method provided in an embodiment of this application;

[0057] Figure 2d A schematic diagram illustrating another method for detecting PDCCH provided in an embodiment of this application;

[0058] Figure 3 A flowchart illustrating a communication method provided in an embodiment of this application;

[0059] Figure 4a A schematic diagram of a first time-domain resource provided in an embodiment of this application;

[0060] Figure 4b A schematic diagram of the first PDCCH for detecting and scheduling the first signaling provided in an embodiment of this application;

[0061] Figure 4c A schematic diagram of a second time-domain resource provided in an embodiment of this application;

[0062] Figure 5 A schematic diagram of a communication device provided in an embodiment of this application;

[0063] Figure 6 This is a schematic diagram of another communication device provided in an embodiment of this application. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0065] The technical solutions provided in this application can be applied to communication systems related to the 3rd Generation Partnership Project (3GPP), such as Long Term Evolution (LTE) communication systems, 5th Generation (5G) mobile communication systems (specifically, New Radio (NR) communication systems, or NR communication systems that introduce Multi-Input Multi-Output (MIMO) technology), or they can be applied to other next-generation mobile communication systems, or other similar communication systems, or they can be applied to communication systems in the future evolution process. Other similar communication systems may include Wireless Fidelity (WiFi), Vehicle-to-Everything (V2X), Internet of Things (IoT) systems, Narrow Band Internet of Things (NB-IoT) systems, or the Industrial Internet, etc.

[0066] See Figure 1 This is a schematic diagram of the structure of a communication system provided in an embodiment of this application. Figure 1 As shown, the communication system 1000 may include a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 1000 may also include the Internet 300.

[0067] The wireless access network 100 includes at least one access network device (such as...) Figure 1 Access network devices such as 110a and 110b, collectively referred to as access network devices 110, and at least one terminal device (such as...) Figure 1 The terminal devices 120a-120j, etc., are collectively referred to as terminal devices 120. The wireless access network 100 may also include other devices, such as wireless repeater devices and / or wireless backhaul devices. Figure 1 (Not shown in the image). Terminal device 120 is connected to access network device 110 wirelessly. Access network device 110 is connected to core network 200 wirelessly or via wired connection. Core network device 210 in core network 200 and access network device 110 in wireless access network 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and wireless access network logical functions.

[0068] The radio access network 100 can be a 3GPP-related communication system (such as a 5G mobile communication system) or other next-generation mobile communication systems. The radio access network 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a WiFi system. The radio access network 100 can also be a communication system integrating two or more of the above systems. The access network device 110, also known as a network device, RAN node, RAN entity, or access node, is used to assist the terminal device 120 in achieving wireless access. Network devices, and components within network devices (such as chips, processing units, or processor modules), can be collectively referred to as network devices. For example, it could be... Figure 1 The network device shown, or it could be Figure 1 The chip (system) in the network device.

[0069] In one possible scenario, network equipment can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a base station in a future mobile communication system, or an access node in a WiFi system. Network equipment can also be a macro base station (such as...). Figure 1 110a), micro base stations or indoor stations (such as Figure 1 The network device can be a 110b relay node or donor node, or a wireless controller in a CRAN scenario. Optionally, the network device can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the network device in V2X technology can be a roadside unit (RSU).

[0070] In another possible scenario, multiple network devices can collaborate to assist terminal device 120 in achieving wireless access, with each network device performing a portion of the base station's functions. For example, the network devices can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and DU can be configured separately or included in the same network element, such as a baseband unit (BBU). The RU can be included in radio equipment or radio units, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). The CU can perform the functions of the radio resource control (RRC) protocol and packet data convergence protocol (PDCP) of the base station, and can also perform the functions of the service data adaptation protocol (SDAP). The DU can perform the functions of the radio link control (RLC) layer and medium access control (MAC) layer of the base station, and can also perform some or all of the physical (PHY) layer functions. For specific descriptions of the above protocol layers, please refer to the relevant technical specifications of 3GPP.

[0071] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0072] Terminal equipment 120, also known as terminal, user equipment (UE), mobile station, mobile terminal, etc., refers to the terminal equipment and its components (such as chips, processing units, or processor modules) collectively as a terminal device. For example, it could be... Figure 1 The terminal device shown, or it could be Figure 1 The terminal device 120 is a chip (system) in the terminal equipment. Terminal device 120 can be widely used in various scenarios, such as device-to-device (D2D), V2X communication, machine-type communication (MTC), IoT communication, virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminal device 120 can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc.

[0073] In this embodiment, the functions of access network device 110 can also be performed by modules (such as chips or modems) within access network device 110, or by devices containing the functions of access network device 110. Similarly, the functions of terminal device 120 can be performed by modules (such as chips or modems) within terminal device 120, or by devices containing the functions of terminal device 120. Likewise, the functions of core network device 210 can be performed by modules (such as chips or modems) within core network device 210, or by devices containing the functions of core network device 210. This embodiment does not limit the specific technologies or device forms used in access network device 110, terminal device 120, and core network device 210.

[0074] The communication system applicable to the embodiments of this application has been briefly introduced above. The relevant technical solutions involved in the embodiments of this application are described below.

[0075] 1) Physical downlink control channel (PDCCH) candidates

[0076] In an NR system, the PDCCH can carry downlink control information (DCI). DCI can be used to schedule the physical downlink shared channel (PDSCH) and / or the physical uplink shared channel (PUSCH). PDSCH or PUSCH can be used to carry data or signaling. In other words, the PDCCH can be used to schedule data or signaling. In this application, detecting the PDCCH can also be understood as detecting DCI.

[0077] Network devices can configure PDCCH candidates for terminal devices. Network devices can send PDCCHs to terminal devices on PDCCH candidates, or they can choose not to send PDCCHs on PDCCH candidates. Terminal devices can detect PDCCHs from network devices on PDCCH candidates; the detection result is either a detected PDCCH or a non-detected PDCCH. In this embodiment, "detect" can be replaced with "monitor." If a PDCCH is detected, the terminal device can decode the PDCCH according to the format of the DCI carried on the PDCCH.

[0078] Typically, one PDCCH candidate can contain L control channel elements (CCEs). L can be referred to as the PDCCH aggregation level (AL), and its value can be 1, 2, 4, 8, or 16. One CCE can contain 6 resource element groups (REGs). REGs belong to the concept of time-frequency resource blocks in NR systems. One REG contains one symbol in the time domain and one resource block (RB) in the frequency domain, which is equivalent to 12 subcarriers. A symbol can also be referred to as an orthogonal frequency-division multiplexing (OFDM) symbol.

[0079] 2) Search space (or search space set) or control resource set (CORESET).

[0080] The following section will explain how network devices can configure PDCCH candidates for terminal devices.

[0081] The search space can be a set of PDCCH candidates. In the aforementioned set of PDCCH candidates, each PDCCH candidate can have the same aggregation level, or there can be at least two PDCCH candidates with different aggregation levels.

[0082] A search space can be associated with a CORESET. A CORESET can be defined on a cell. A CORESET contains a set of continuous or non-contiguous RBs in the frequency domain and one, two, or three consecutive symbols in the time domain. Typically, a search space can be associated with one and only one CORESET, while a CORESET can be associated with multiple search spaces.

[0083] As shown in Table 1, the search space is divided into two types: common search space (CSS) and UE-specific search space (USS).

[0084] CSS is suitable for common scenarios. CSS includes one or more of the following, which will be introduced below.

[0085] Type0-PDCCH CSS: Terminal devices can use the system information radio network temporary identifier (SI-RNTI) in Type0-PDCCH CSS to detect PDCCH, which is used by the terminal device to detect the scheduling of system information block (SIB) 1.

[0086] In Type 0A-PDCCH CSS, the terminal device can use the detection PDCCH of SI-RNTI for scheduling the detection of other SIBs.

[0087] In Type 1-PDCCH CSS, terminal devices can use random access RNTI (RA-RNTI), message B RNTI (MsgB-RNTI), or temporary cell RNTI (TC-RNTI) to detect PDCCH, which is used by the terminal device to detect the scheduling of random access messages (e.g., random access response (RAR)).

[0088] In Type2-PDCCH CSS, terminal devices can use paging RNTI (P-RNTI) to detect PDCCH, which is used for scheduling paging messages for the terminal device.

[0089] In Type 3-PDCCH CSS, terminal devices can use interruption RNTI (INT-RNTI), slot format indication RNTI (SFI-RNTI), transmit power control physical uplink shared channel RNTI (TPC-PUSCH-RNTI), transmit power control physical uplink control channel RNTI (TPC-PUCCH-RNTI), transmit power control sounding reference signal RNTI (TPC-SRS-RNTI), or identification of cancellation in the uplink RNTI (CI-RNTI) to detect the PDCCH for scheduling the detection group common DCI of the terminal device.

[0090] USS is applicable to specific terminal device scenarios. Terminal devices can use cell RNTI (C-RNTI), modulation and coding scheme cell RNTI (MCS-C-RNTI), semi-persistent channel state information (SP-CSI-RNTI), and configured scheduling RNTI (CS-RNTI) to detect PDCCH in USS, which is used for scheduling the detection of PDSCH or PUSCH by the terminal device.

[0091] Table 1

[0092]

[0093] Network devices can configure time-domain parameters (such as detection period and period offset) for a search space in the search space configuration information. Based on the time-domain parameters of the search space and the time-frequency resource parameters of the CORESET associated with the search space, a set of time-frequency resources corresponding to the search space can be determined.

[0094] For example, Figure 2a This is a schematic diagram illustrating a set of time-frequency resources corresponding to a search space provided in an embodiment of this application. For example... Figure 2a As shown, a CORESET is associated with search space 1, and the CORESET is also associated with search space 2. Figure 2a The diagram illustrates the time-domain and frequency-domain resources contained in the CORESET. Network devices can shift the CORESET to different positions in time based on its time-domain and frequency-domain resources, as well as the time-domain parameters of search space 1, thereby forming a set of time-frequency resources corresponding to search space 1, such as... Figure 2a A set of time-frequency resources without a filler pattern. Similarly, the network device can shift the CORESET to different positions in time based on the time-domain and frequency-domain resources contained in the CORESET, as well as the time-domain parameters of search space 2, thereby forming a set of time-frequency resources corresponding to search space 2, such as... Figure 2a The search space contains a set of time-frequency resources with a filled pattern. It can be seen that the time-domain parameters of search space 1 are different from those of search space 2.

[0095] The configuration information for the search space may include one or more of the following, which are described below.

[0096] A searchspace identifier (searchSpaceId) is used to indicate or identify a search space.

[0097] The controlResourceSetId is used to indicate the CORESET associated with the search space.

[0098] The monitoring slot period and offset (monitoringSlotPeriodicityAndOffset) are used to indicate the monitoring period and offset of the PDCCH. The unit of indication can be a time slot.

[0099] Duration indicates the duration of the detected PDCCH in each detection cycle. The unit of the indicated duration can be a time slot, that is, the duration is the number of detection time slots of the detected PDCCH in each detection cycle.

[0100] The first monitoring symbol (monitoringSymbolsWithinSlot) in each monitoring slot indicates the monitoring symbol of the first monitored PDCCH in each monitoring slot. One or more symbols can be used.

[0101] The number of PDCCH candidates (nrofCandidates) indicates the number of PDCCH candidates corresponding to each aggregation level.

[0102] The searchspace type indicates whether the search space is CSS (e.g., Type0-PDCCHCSS, Type0A-PDCCHCSS, etc.) or USS, and indicates the format of the DCI carried on the PDCCH detected in the search space.

[0103] For example, Figure 2b This is a schematic diagram illustrating a set of temporal resources corresponding to a search space provided in an embodiment of this application. For example... Figure 2b As shown, the detection period corresponding to search space 1 is 10 slots, with a period offset of 5 slots. Each detection period contains 2 slots, and the first detection symbol in each slot is symbol 0 and symbol 7. The CORESET associated with search space 1 contains 2 symbols in the time domain. Therefore, after the network device configures search space 1 for the terminal device, the terminal device uses 10 slots as one detection period and detects PDCCH on symbols 0, 1, 7, and 8 in the 6th and 7th slots of each detection period. That is, the set of time domain resources corresponding to search space 1 consists of symbols 0, 1, 7, and 8 in the 6th and 7th slots of every 10 slots. Figure 2b A set of temporal resources containing a filled pattern.

[0104] Currently, when a terminal device is in a connected state, it needs to constantly check the PDCCH according to the search space configured by the network device to avoid missing data scheduling and signaling scheduling by the network device. However, prolonged PDCCH checking by the terminal device increases its power consumption.

[0105] For example, Figure 2c This is a schematic diagram illustrating a method for detecting a PDCCH, as provided in an embodiment of this application. Figure 2c As shown, within one discontinuous reception (DRX) cycle of the terminal device, the terminal device can be divided into two states: one state in which the terminal device detects the non-sleep state of the PDCCH, and the other state in which the terminal device does not detect the sleep state of the PDCCH.

[0106] The non-sleep state includes both PDCCH-only and non-PDCCH-only states. PDCCH-only state means the terminal device detects the PDCCH but does not actually detect it; that is, the terminal device performs a meaningless detection. The reason the terminal device does not detect the PDCCH may be that the network device does not actually send the PDCCH to the terminal device, meaning the network device does not perform any scheduling for the terminal device. Non-PDCCH-only state means the terminal device detects the PDCCH and actually detects it; that is, the terminal device performs a meaningful detection. The sleep state includes deep sleep and light sleep. The difference between deep sleep and light sleep lies in their duration; a shorter duration indicates a light sleep state, and a longer duration indicates a deep sleep state.

[0107] The timing of data scheduling by network devices is highly dependent on the services provided by the terminal devices. Therefore, based on the services offered by the terminal devices, the timing of data scheduling by network devices is predictable or follows a pattern. To reduce power consumption, terminal devices can use artificial intelligence (AI) or other methods (such as application-layer notification) to determine the arrival time of data. If the terminal device determines that no data will arrive within a certain time range, it can refrain from detecting the PDCCH within that time range, thereby reducing power consumption.

[0108] For example, Figure 2d This is a schematic diagram illustrating another method for detecting the PDCCH, as provided in an embodiment of this application. Figure 2d As shown, if the terminal device determines that data has arrived within time range 1, but no data has arrived within other time ranges, then the terminal device will only detect the PDCCH within time range 1. In other words, the terminal device enters a non-PDCCH-only state within time range 1 and enters a sleep state at other times to reduce power consumption.

[0109] However, since the PDCCH schedules signaling in addition to data, and the signaling is triggered by the network device, the terminal device cannot determine the arrival time of the signaling. Therefore, if the terminal device only detects the PDCCH according to the arrival time of the data, it may miss the signaling scheduling of the network device.

[0110] Therefore, embodiments of this application provide a communication method for reducing terminal power consumption.

[0111] In the embodiments of this application, "when," "if," and "if" all refer to the device taking corresponding actions under certain objective circumstances, and are not time-limited, nor do they require the device to perform a judgment action, nor do they imply any other limitations. Unless otherwise specified, "if" and "if" can be substituted, and "when" and "in the case of" can be substituted. "When" and "if" / "if" can be substituted.

[0112] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0113] In this document, "used for indication" can include both direct and indirect indication. For example, when descriptive information I is used to indicate information J, it can mean that information I directly indicates information J or indirectly indicates information J, but it does not necessarily mean that information I carries information J.

[0114] Let information J, indicated by information I, be called the information to be indicated. In practice, there are many ways to indicate the information to be indicated, such as, but not limited to, directly indicating the information to be indicated, such as the information itself or its index. It can also be indirectly indicated by indicating other information, where there is a relationship between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the indication of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) order of various pieces of information, thereby reducing indication overhead to some extent. Simultaneously, common parts of various pieces of information can be identified and indicated uniformly to reduce the indication overhead caused by individually indicating the same information.

[0115] Furthermore, the specific instruction method can also be any existing instruction method, such as, but not limited to, the above-mentioned instruction methods and their various combinations. As described above, for example, when multiple pieces of information of the same type need to be indicated, the instruction methods for different pieces of information may differ. In specific implementation, the required instruction method can be selected according to specific needs. This application embodiment does not limit the selected instruction method. Therefore, the instruction methods involved in this application embodiment should be understood to cover various methods that enable the party to be instructed to obtain the information to be indicated.

[0116] In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0117] Information may undergo necessary processing, such as encoding and modulation, between the source and destination ends, but the destination end can understand the valid information from the source end. Similar statements in the embodiments of this application can be understood in a similar way, and will not be repeated here.

[0118] In this application embodiment, the number of nouns, unless otherwise specified, refers to "singular nouns or plural nouns," that is, "one or more." "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " can indicate that the related objects before and after are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0119] In this application, the ordinal numbers such as "first" and "second" are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority, or importance of the multiple objects. For example, "first configuration" and "second configuration" refer to two different configurations, not that the priority or importance of these two configurations is different. For a technical feature, the technical features within that technical feature are distinguished by "A," "B," "C," and "D," and there is no sequential or hierarchical order among the technical features described by "A," "B," "C," and "D." For example, in this document, "case A" and "case B" are only used to distinguish different contents, and do not limit the sequential or hierarchical order, priority, or importance between "case A" and "case B."

[0120] The solution provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings. In the following description, the communication method provided by the embodiments of this application is applied to... Figure 1 The communication system shown is an example. The communication system and application 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 communication systems and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0121] The communication method provided in the embodiments of this application is described below as being executed by a terminal device and a network device.

[0122] When this communication method is implemented by components in a terminal device and a network device, the receiving and transmitting steps can be understood as the component communicating with other components, such as communication between a baseband chip and a radio frequency circuit. In the embodiments of this application, the processing performed by a single execution entity can also be divided into multiple execution entities, which can be logically and / or physically separated. For example, the processing performed by the network device can be divided into execution by at least one of a CU and a DU.

[0123] See Figure 3 , Figure 3 This is a flowchart illustrating a communication method provided in an embodiment of this application. Figure 3 As shown, the communication method includes the following steps.

[0124] S301. The network device sends first information to the terminal device, and the terminal device receives the first information from the network device accordingly; wherein the first information is used to indicate a first configuration, and the first configuration is used to indicate a first time domain resource.

[0125] In this embodiment, the first information may be encapsulated or carried in an RRC message (e.g., an RRC reconfiguration message) or other messages; this embodiment does not limit this. It is understood that the terminal device may obtain the first information through blind detection.

[0126] The first time-domain resource indicated by the first configuration can correspond to a continuous or discontinuous time-domain resource location. The first time-domain resource indicated by the first configuration can be a periodic or aperiodic time-domain resource. This application embodiment does not limit this.

[0127] The first time-domain resource indicated by the first configuration can be understood as the time-domain resource for detecting and scheduling the first PDCCH of the first signaling. That is, the terminal device detects the first PDCCH of the first signaling at the time-domain resource location corresponding to the first time-domain resource. Correspondingly, the network device can send the first PDCCH of the first signaling at the time-domain resource location corresponding to the first time-domain resource.

[0128] Optionally, the first temporal resource indicated by the first configuration can be understood as a set of temporal resources corresponding to the first search space. In other words, the first configuration can be used to configure the first search space.

[0129] The first search space is either the search space corresponding to the first PDCCH of the first signaling message, or the search space of the first signaling message. That is, the first search space is a set of PDCCH candidates. The network device can send the first PDCCH of the first signaling message to the terminal device on this set of PDCCH candidates, and the terminal device can detect the first PDCCH of the first signaling message from the network device on this set of PDCCH candidates. In other words, the first search space corresponds to a set of time-frequency resources. The network device can send the first PDCCH of the first signaling message to the terminal device on the set of time-frequency resources corresponding to the first search space, and the terminal device can detect the PDCCH of the first signaling message from the network device on the set of time-frequency resources corresponding to the first search space. The first search space can be a USS (United States Space).

[0130] The first signaling is used to carry control information and can be either a message or data carrying control information. For example, the first signaling can carry control information from the RRC layer, MAC layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, service data adaptation protocol (SDAP) layer, or physical layer.

[0131] For example, the first signaling may include an RRC message. For instance, the RRC message may be one or more of the following: an RRC reconfiguration message, a DLInformationTransfer message, a DLInformationTransferMRDC message for multi-radio dual connectivity (MRDC), a CounterCheck message, a DLDedicatedMessageSegment message, a LoggedMeasurementConfiguration message, etc. It is understood that the first signaling may also include non-access stratum (NAS) messages.

[0132] For example, the first signaling may include a MAC message, such as a media access control control element (MAC CE).

[0133] For example, the first signaling may include data plane signaling. Data plane signaling can be understood as control information transmitted via data bearers, such as one or more of RLC status reports, PDCP status reports, etc.

[0134] It is understood that the first signaling may include one or more of the examples above, and may also include other forms of messages or data carrying control information, which are not limited in this application embodiment.

[0135] In practice, the first configuration may include a first parameter and / or a second parameter. This will be described below.

[0136] 1) The first parameter can be used to indicate one or more of the following: search space identifier, CORESET identifier, detection period, period offset, duration (i.e., the number of detection slots in each detection period), the first detection symbol in each detection slot, the number of PDCCH candidates, and search space type.

[0137] It is understood that for the specific descriptions of the search space identifier, CORESET identifier, detection period, period offset, duration, the first detection symbol in each detection time slot, the number of PDCCH candidates, and the search space type involved in the embodiments of this application, please refer to the specific descriptions of the relevant technical features above, and will not be repeated here.

[0138] 2) The second parameter can be used to indicate the first time.

[0139] The first time can be one or more of the start time, end time, or duration of the first PDCCH that the terminal device detects and schedules the first signaling. Alternatively, the first time can be one or more of the start time, end time, or duration of the first search space.

[0140] For example, the second parameter can indicate a time range by specifying the start and end times, or it can indicate a time range by specifying the start and duration, or it can indicate a time range by specifying the end and duration. The terminal device detects the first PDCCH of the first signaling within this time range. It is understood that the terminal device will not continuously detect the first PDCCH of the first signaling according to the first parameter, but only within this time range. For example, the terminal device may detect the first PDCCH of the first signaling according to the detection period, period offset, and number of detection slots in each detection period indicated by the first parameter within this time range, and will not detect the PDCCH of the first signaling outside this time range.

[0141] In one possible implementation, the first time can be associated with a second time. The second time can be one or more of the start time, end time, or duration of the terminal device transmitting the first data. The second time can be configured by the network device, or it can be determined by the terminal device. For example, the terminal device determines the start time of the second time based on the time when the first data transmission begins, or it determines the end time of the second time based on the time when the first data transmission stops. This application embodiment does not limit this. It is understood that the first data may not specifically refer to any particular data, but rather refers to the transmitted data in general. The terminal device transmitting the first data may include the terminal device sending the first data or the terminal device receiving the first data.

[0142] For example, the start time of the first PDCCH for detecting and scheduling the first signaling by the terminal device is related to the start time of transmitting the first data by the terminal device. For instance, the start time of the first PDCCH for detecting and scheduling the first signaling by the terminal device is the start time of transmitting the first data by the terminal device; or the start time of the first PDCCH for detecting and scheduling the first signaling by the terminal device is earlier than the start time of transmitting the first data by the terminal device, such as the former being earlier than the latter by a certain time (e.g., X milliseconds, X time slots, or X symbols); or the start time of the first PDCCH for detecting and scheduling the first signaling by the terminal device is later than the start time of transmitting the first data by the terminal device, such as the former being later than the latter by a certain time (e.g., Y milliseconds, Y time slots, or Y symbols). Wherein, X and Y are integers greater than or equal to 1, and the values ​​of X and Y can be pre-configured, or defined by a standard, or negotiated between the network device and the terminal device, such as configured by the network device for the terminal device. This embodiment of the application does not limit this.

[0143] For example, the end time of the first PDCCH of the first signaling detected by the terminal device is related to the end time of the first data transmission by the terminal device. For instance, the end time of the first PDCCH of the first signaling detected by the terminal device is the end time of the first data transmission by the terminal device; or the end time of the first PDCCH of the first signaling detected by the terminal device is earlier than the end time of the first data transmission by the terminal device, such as the former being earlier than the latter by a certain time (e.g., X milliseconds, X time slots, or X symbols earlier); or the end time of the first PDCCH of the first signaling detected by the terminal device is later than the end time of the first data transmission by the terminal device, such as the former being later than the latter by a certain time (e.g., Y milliseconds, Y time slots, or Y symbols later).

[0144] For example, the duration of the first PDCCH used by the terminal device to detect and schedule the first signaling is related to the duration of the terminal device transmitting the first data. For instance, the duration of the first PDCCH used by the terminal device to detect and schedule the first signaling is the same as the duration of the terminal device transmitting the first data, or the duration of the first PDCCH used by the terminal device to detect and schedule the first signaling is less than the duration of the terminal device transmitting the first data, such as the former being a certain time smaller than the latter (e.g., smaller by X milliseconds, X time slots, or X symbols), or the duration of the first PDCCH used by the terminal device to detect and schedule the first signaling is greater than the duration of the terminal device transmitting the first data, such as the former being a certain time larger than the latter (e.g., larger by Y milliseconds, Y time slots, or Y symbols).

[0145] The first signaling can be associated with the first data. This can be understood as follows: the network device sends the first signaling to the terminal device only after the terminal device sends the first data to the network device. For example, if the first signaling is an RLC status report, the terminal device receives the RLC status report from the network device only after sending the first data, and then determines the reception status of the first data based on the RLC status report. As another example, if the first signaling is a PDCP status report, the terminal device receives the PDCP status report from the network device only after sending the first data, and then determines the reception status of the first data based on the PDCP status report.

[0146] In other words, when the first signaling is associated with the first data, in order to reduce the power consumption of the terminal device and avoid missing the first PDCCH for scheduling the first signaling, the terminal device can detect the first PDCCH for scheduling the first signaling only within or around the time range of transmitting the first data. For example, if the first signaling is an RLC status report, if the terminal device detects the first PDCCH for scheduling the RLC status report frequently, although it can avoid missing the first PDCCH for scheduling the RLC status report and thus promptly know the status of the network device receiving the first data, the frequent detection will increase the power consumption of the terminal device. If the terminal device detects the first PDCCH for scheduling the RLC status report sparsely, although it can reduce the power consumption of the terminal device, the sparse detection will lead to missing the first PDCCH for scheduling the RLC status report, increasing the delay of the first data retransmission. Therefore, detecting and scheduling the first PDCCH for scheduling the RLC status report according to the time range of transmitting the first data will avoid missing the RLC status report, will not increase the transmission delay of the first data, and will also reduce the power consumption of the terminal device.

[0147] It is understood that the terminal device's method of determining the first time is not limited to determining it through the second parameter. For example, the terminal device can determine the first time according to preset rules, or it can determine the first time according to the second time. Furthermore, the terminal device can determine the first time through an event, which may include at least one of the following: when the terminal device receives signaling A or data A, the terminal device begins detecting the first PDCCH of the first signaling; or when the terminal device receives signaling B or data B, the terminal device stops detecting the first PDCCH of the first signaling; or the terminal device begins detecting the first PDCCH of the first signaling when it determines that the first data transmission has started; or the terminal device stops detecting the first PDCCH of the first signaling when it determines that the first data transmission has ended.

[0148] It is understood that the second parameter included in the first configuration is optional, which means that the terminal device can continuously detect and schedule the first PDCCH of the first signaling according to the first parameter included in the first configuration after receiving the first information, instead of only detecting and scheduling the first PDCCH of the first signaling according to the first parameter included in the first configuration within a certain time range.

[0149] It can be understood that the first parameter and / or second parameter included in the first configuration are time-domain parameters of the first search space. The first time-domain resource indicated by the first configuration can be obtained based on the time-domain parameters of the first search space and the time-domain resource parameters of the first CORESET associated with the first search space. The first CORESET may contain a set of continuous or non-contiguous RBs in the frequency domain and one, two, or three consecutive symbols in the time domain. That is, the frequency-domain resource parameters of the first CORESET are a set of continuous or non-contiguous RBs contained in the frequency domain, and the time-domain resource parameters of the first CORESET are one, two, or three consecutive symbols contained in the time domain.

[0150] For example, Figure 4a This is a schematic diagram of a first time-domain resource provided in an embodiment of this application. The detection period corresponding to the first search space is 10 time slots, the period offset is 5 time slots, the number of detection time slots in each detection period is 2 time slots, the first detection symbol in each detection time slot is symbol 0 and symbol 7, and the first CORESET associated with the first search space contains 2 symbols in the time domain. Since the start time of the terminal device detecting the first PDCCH is time 1 and the end time is time 2, and time 1 and time 2 are 20 time slots apart, that is, time 1 is the first time slot and time 2 is the 20th time slot. Therefore, after the network device configures the first search space for the terminal device, the terminal device detects the first PDCCH scheduling the first signaling on symbols 0, 1, 7 and 8 in the 6th, 7th, 16th and 17th time slots, as follows. Figure 4a The set of time-domain resources with the filled pattern is the set of time-domain resources corresponding to the first search space, which is also the first time-domain resource indicated by the first configuration mentioned above.

[0151] S302. The network device sends the first PDCCH of the scheduling first signaling to the terminal device only on the first time domain resources. Correspondingly, the terminal device detects the first PDCCH of the scheduling first signaling from the network device only on the first time domain resources.

[0152] In this embodiment, the network device only sends the first PDCCH of the scheduling first signaling to the terminal device on the first time domain resource. This can be understood as the network device not sending the first PDCCH of the scheduling first signaling to the terminal device on time domain resources other than the first time domain resource. Similarly, the terminal device only detects the first PDCCH of the scheduling first signaling from the network device on the first time domain resource. This can be understood as the terminal device not detecting the first PDCCH of the scheduling first signaling from the network device on time domain resources other than the first time domain resource.

[0153] Optionally, the terminal device may use C-RNTI to detect and schedule the first PDCCH of the first signaling on the first time domain resource, or the terminal device may use a first identifier to detect and schedule the first PDCCH of the first signaling on the first time domain resource. The first identifier is a user identifier used to identify the first signaling, such as the signaling RNTI.

[0154] It is understandable that since the network device only sends the first PDCCH of the scheduling first signaling to the terminal device on the first time domain resource, and does not send the first PDCCH of the scheduling first signaling to the terminal device on time domain resources other than the first time domain resource, the terminal device only detects the first PDCCH of the scheduling first signaling from the network device on the first time domain resource, and does not detect the first PDCCH of the scheduling first signaling from the network device on time domain resources other than the first time domain resource. This not only prevents the first PDCCH of the scheduling first signaling from the network device from being missed, but also reduces the power consumption of the terminal device.

[0155] For example, Figure 4b This is a schematic diagram illustrating the detection of a first PDCCH for scheduling first signaling, provided in an embodiment of this application. The first signaling includes an RLC status report and an RRC reconfiguration message. During the first DRX cycle of the terminal device, the network device may send the first PDCCH for scheduling RLC status report to the terminal device only within time range 1, and not send it outside of time range 1; the terminal device may detect the first PDCCH for scheduling RLC status report only within time range 1, and not detect it outside of time range 1, meaning the terminal device is in a non-sleep state within time range 1 and in a sleep state outside of time range 1. During the second DRX cycle of the terminal device, the network device can send the first PDCCH of the scheduled RRC reconfiguration message to the terminal device only within time range 2, and not send it outside of time range 2. Similarly, the terminal device can detect the first PDCCH of the scheduled RRC reconfiguration message only within time range 2, and not detect it outside of time range 2. In other words, the terminal device is in a non-sleep state within time range 2 and in a sleep state outside of time range 2. The non-sleep states of the terminal device in both time ranges 1 and 2 are non-PDCCH-only states. This means that the terminal device detects the first PDCCH within both time ranges 1 and 2, and does not perform meaningless detections, reducing power consumption. Furthermore, since the network device only sends the first PDCCH within time ranges 1 and 2, the terminal device does not miss detecting the first PDCCH.

[0156] In one possible implementation, the terminal device can detect the first PDCCH of the scheduling first signaling from the network device on all resources in the first time domain resources, thereby avoiding the terminal device missing the first PDCCH of the scheduling first signaling and ensuring communication reliability.

[0157] In one possible implementation, the network device may also send a second PDCCH for scheduling the first data to the terminal device on the first time domain resource. Correspondingly, the terminal device may also detect the second PDCCH for scheduling the first data from the network device on the first time domain resource. Alternatively, the network device may not send the second PDCCH for scheduling the first data to the terminal device on the first time domain resource. Correspondingly, the terminal device may not detect the second PDCCH for scheduling the first data from the network device on the first time domain resource. That is, there is no restriction on whether the network device sends the second PDCCH for scheduling the first data to the terminal device on the first time domain resource.

[0158] It can be understood that the second search space is the search space corresponding to the second PDCCH for scheduling the first data. That is, the second search space is a set of PDCCH candidates. The network device can send the second PDCCH for scheduling the first data to the terminal device on this set of PDCCH candidates, and the terminal device can detect the second PDCCH for the first data from the network device on this set of PDCCH candidates. In other words, the second search space corresponds to a set of time-frequency resources. The network device can send the second PDCCH for the first data to the terminal device on the set of time-frequency resources corresponding to the second search space, and the terminal device can detect the second PDCCH for the first data from the network device on the set of time-frequency resources corresponding to the second search space.

[0159] The set of time-domain resources corresponding to the second search space may include the set of time-domain resources corresponding to the first search space, that is, the set of time-domain resources corresponding to the second search space includes the first time-domain resources; or, the set of time-domain resources corresponding to the second search space may not include the set of time-domain resources corresponding to the first search space, that is, the set of time-domain resources corresponding to the second search space does not include the first time-domain resources. This application does not limit this aspect.

[0160] When the set of time-domain resources corresponding to the second search space includes the first time-domain resources, the network device can also send a second PDCCH for scheduling the first data to the terminal device on the first time-domain resources. Correspondingly, the terminal device can also detect the second PDCCH for scheduling the first data from the network device on the first time-domain resources. Alternatively, when the set of time-domain resources corresponding to the second search space does not include the first time-domain resources, the network device cannot send a second PDCCH for scheduling the first data to the terminal device on the first time-domain resources. Correspondingly, the terminal device cannot detect the second PDCCH for scheduling the first data from the network device on the first time-domain resources.

[0161] In addition to indicating the first configuration, the aforementioned first information can also indicate other configurations, such as one or more of the second, third, or fourth configurations, which will be described in detail below.

[0162] In scenario A, the first information can also be used to indicate the second configuration. The second configuration can be used to indicate the second time-domain resource.

[0163] The network device can send a second PDCCH for scheduling the first data to the terminal device on the second time domain resources. Correspondingly, the terminal device can detect the second PDCCH for scheduling the first data from the network device on the second time domain resources.

[0164] It is understood that the specific description of the parameters included in the second configuration can be referred to the specific description of the parameters included in the first configuration mentioned above, and will not be repeated here. The parameters included in the second configuration can be understood as the temporal parameters of the second search space. The second temporal resource indicated by the second configuration can be understood as part or all of the temporal resources in a set of temporal resources corresponding to the second search space. That is, the set of temporal resources corresponding to the second search space may include, but is not limited to, the second temporal resource. For example, the set of temporal resources corresponding to the second search space may include the first temporal resource and the second temporal resource.

[0165] In one possible implementation, the terminal device may detect a second PDCCH of scheduling first data from the network device on a portion of the resources in the second time domain.

[0166] It is understandable that, in order to reduce the power consumption of the terminal device, the terminal device can use AI or other methods (such as application layer notification) to determine the arrival time of the first data. If the terminal device determines that the first data will arrive within a certain time range, the terminal device can detect the second PDCCH from the network device scheduling the first data on the second time domain resources within that time range. If the terminal device determines that the first data will not arrive within a certain time range, the terminal device can choose not to detect the second PDCCH from the network device scheduling the first data on the second time domain resources within that time range. In other words, if the terminal device determines that the first data may arrive on some resources in the second time domain, the terminal device will only detect the second PDCCH scheduling the first data on those resources, ensuring that no data is missed while saving the terminal device's power consumption. Furthermore, the above-mentioned correlation between the first time and the second time can be understood as the possibility that the first data may arrive on the first time domain resources. Since the first data is associated with the first signaling, the terminal device can only detect the first PDCCH scheduling the first signaling on the first time domain resources, ensuring that no signaling is missed while saving the terminal device's power consumption.

[0167] For example, Figure 4c This is a schematic diagram of a second time-domain resource provided in an embodiment of this application. The detection period corresponding to the second search space is 10 time slots, the period offset is 5 time slots, and the number of detection time slots in each detection period is 2 time slots. The first detection symbol in each detection time slot is symbol 0 and symbol 7. The second CORESET associated with the second search space contains 2 symbols in the time domain. Therefore, after the network device configures the second search space for the terminal device, it uses 10 time slots as one detection period and detects the second PDCCH for scheduling the first data on symbols 0, 1, 7, and 8 in the 6th and 7th time slots of each detection period. Figure 4c The set of time-domain resources with the filled pattern is the set of time-domain resources corresponding to the second search space, which is also the second time-domain resource indicated by the second configuration mentioned above.

[0168] If the terminal device determines that first data has arrived within time range 1, and no first data has arrived in other time ranges, since the 6th and 7th time slots in the first detection period are within time range 1, while the 6th and 7th time slots in the second detection period are not within time range 1, the terminal device can detect the second PDCCH scheduling the first data only on symbols 0, 1, 7, and 8 in the 6th and 7th time slots of the first detection period, and not on symbols 0, 1, 7, and 8 in the 6th and 7th time slots of the second detection period, thereby reducing the power consumption of the terminal device.

[0169] In scenario B, the first information can also be used to indicate the third configuration. The third configuration can be used to indicate the third time-domain resource.

[0170] The network device may send the third PDCCH of the scheduling second signaling to the terminal device only on the third time domain resources. Correspondingly, the terminal device may only detect the third PDCCH of the scheduling second signaling from the network device on the third time domain resources. The second signaling may be different from the first signaling.

[0171] For a detailed description of the second signaling, please refer to the detailed description of the first signaling above; it will not be repeated here.

[0172] It can be understood that the third search space is the search space corresponding to the third PDCCH for scheduling the second signaling. That is, the third search space is a set of PDCCH candidates. The network device can send the third PDCCH for scheduling the second signaling to the terminal device on this set of PDCCH candidates, and the terminal device can detect the third PDCCH for the second signaling from the network device on this set of PDCCH candidates. In other words, the third search space corresponds to a set of time-frequency resources. The network device can send the third PDCCH for the second signaling to the terminal device on the set of time-frequency resources corresponding to the third search space, and the terminal device can detect the third PDCCH for the second signaling from the network device on the set of time-frequency resources corresponding to the third search space.

[0173] The detailed description of the parameters included in the third configuration can be found in the detailed description of the parameters included in the first configuration, and will not be repeated here. The parameters included in the third configuration can be understood as the time-domain parameters of the third search space. The third time-domain resources indicated by the third configuration can be understood as a set of time-domain resources corresponding to the third search space.

[0174] The third search space can differ from the first search space, meaning the third time-domain resources can be different from the first time-domain resources. In other words, different signaling can be configured with different search spaces. For example, if the first signaling is an RRC message and the second signaling is a MAC CE, the network device can configure search space 1 for the RRC message and search space 2 for the MAC CE. Since the RRC message is sent relatively infrequently, the time-domain resources corresponding to search space 1 can be relatively sparse, while the MAC CE is sent more frequently, so the time-domain resources corresponding to search space 1 can be relatively dense. As another example, if the first signaling is an RRC reconfiguration message and the second signaling is a message other than an RRC reconfiguration message, the network device can configure search space 1 for the RRC reconfiguration message and search space 2 for other signaling (e.g., RLC status reports). The network device can determine the search space for different signaling based on the characteristics of the signaling (e.g., frequency, relationship with data, etc.) or other factors, thus enabling flexible configuration of search spaces for terminal devices.

[0175] Alternatively, the third search space can be the same as the first search space, meaning the third time-domain resources can be the same as the first time-domain resources. In other words, different signaling configurations can share the same search space; for example, a network device can configure only one search space for a terminal device, thereby reducing information overhead.

[0176] In scenario C, the first information can also be used to indicate the fourth configuration. The fourth configuration is used to indicate the first frequency domain resource, and it can be associated with the first configuration.

[0177] The first frequency domain resource indicated by the fourth configuration can correspond to a continuous or discontinuous frequency domain resource location. The first frequency domain resource indicated by the fourth configuration can be a periodic or aperiodic frequency domain resource. This application embodiment does not limit this.

[0178] The first frequency domain resource indicated by the fourth configuration can be understood as a set of frequency domain resources corresponding to the first search space. In other words, the fourth configuration can be used to configure the first search space.

[0179] In specific implementation, the fourth configuration may include a third parameter, which can be used to indicate the first CORESET associated with the first search space. It can be understood that the third parameter included in the fourth configuration is a frequency domain parameter of the first search space. The first frequency domain resource indicated by the fourth configuration may be obtained based on the frequency domain parameters of the first search space.

[0180] The network device may send the first PDCCH of the scheduling first signaling to the terminal device only on the first frequency domain resources. Correspondingly, the terminal device may only detect the first PDCCH of the scheduling first signaling from the network device on the first frequency domain resources.

[0181] Specifically, the network device may send the first PDCCH of the scheduling first signaling to the terminal device only on the first frequency domain resources. This can be understood as the network device not sending the first PDCCH of the scheduling first signaling to the terminal device on time domain resources outside the first frequency domain resources. Similarly, the terminal device only detects the first PDCCH of the scheduling first signaling from the network device on the first frequency domain resources. This can also be understood as the terminal device not detecting the first PDCCH of the scheduling first signaling from the network device on frequency domain resources outside the first frequency domain resources.

[0182] Optionally, the terminal device may use C-RNTI to detect and schedule the first PDCCH of the first signaling on the first frequency domain resources, or the terminal device may use a first identifier to detect and schedule the first PDCCH of the first signaling on the first frequency domain resources. The first identifier is a user identifier used to identify the first signaling, such as the signaling RNTI.

[0183] It is understandable that since the network device only sends the first PDCCH of the scheduling first signaling to the terminal device on the first frequency domain resources and not on the time domain resources outside the first frequency domain resources, the terminal device only detects the first PDCCH of the scheduling first signaling from the network device on the first frequency domain resources and not on the time domain resources outside the first frequency domain resources. This not only prevents the first PDCCH of the scheduling first signaling from the network device from being missed, but also reduces the power consumption of the terminal device.

[0184] It is understood that the first information used to indicate the first configuration, the second configuration, the third configuration, and the fourth configuration can be encapsulated or carried in the same message, or they can be encapsulated or carried in different messages. This application embodiment does not limit this.

[0185] The methods provided in the embodiments of this application above are described using terminal devices and network devices as examples. In this application, each embodiment can be implemented independently or in combination based on certain inherent connections; in each embodiment, different implementation methods can be implemented in combination or independently. To achieve the functions of the methods provided in the embodiments of this application above, the steps executed by the terminal device can be implemented by different functional entities constituting the terminal device. The steps executed by the network device can be implemented by different functional entities constituting the network device. For example, the network device can be a CU-DU architecture, where the CU can generate synchronization signals and the DU can send synchronization signals. To achieve the functions of the methods provided in the embodiments of this application above, the terminal device and network device can include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0186] The methods provided by the embodiments of this application have been described above with reference to the accompanying drawings. The apparatus provided by the embodiments of this application will be described below with reference to the accompanying drawings.

[0187] Based on the same technical concept, embodiments of this application provide a communication device, which includes a module / unit / means for executing the method performed by the device in the above-described method embodiments. This module / unit / means can be implemented in software, or in hardware, or implemented by hardware executing corresponding software.

[0188] For example, see Figure 5 This is a schematic diagram of a communication device 500, which includes a transceiver module 501 and a processing module 502. This device can be the aforementioned terminal device or network device.

[0189] When the device 500 is a terminal device, the functions of each module of the device 500 are as follows:

[0190] Transceiver module 501 is used to receive first information from a network device, the first information being used to indicate a first configuration, the first configuration being used to indicate a first time domain resource;

[0191] Processing module 502 is configured to detect only the first PDCCH of the scheduling first signaling from the network device on the first time domain resource.

[0192] In one possible implementation, the processing module 502 is further configured to detect the first PDCCH from the network device on all resources in the first time domain resource.

[0193] In one possible implementation, the processing module 502 is further configured to detect a second PDCCH of scheduling first data from the network device on the first time domain resource.

[0194] In one possible implementation, the first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the processing module 502 is further used to detect a second PDCCH of scheduling first data from the network device on the second time-domain resource.

[0195] In one possible implementation, the processing module 502 is further configured to detect the second PDCCH from the network device on a portion of the resources in the second time domain resources.

[0196] In one possible implementation, the processing module 502 is further configured to determine a first time, which is one or more of the start time, end time, or duration of the terminal device detecting the first PDCCH.

[0197] In one possible implementation, the first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time, which is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

[0198] In one possible implementation, the first time is associated with a second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

[0199] In one possible implementation, the first signaling is associated with the first data.

[0200] In one possible implementation, the first information is further used to indicate a third configuration, which indicates a third time-domain resource; the processing module 502 is further used to detect a third PDCCH from the scheduling second signaling of the network device only on the third time-domain resource, the second signaling being different from the first signaling.

[0201] In one possible implementation, the first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the processing module 502 is further used to detect the first PDCCH from the network device only on the first frequency domain resource.

[0202] In one possible implementation, the first signaling includes one or more of the following: RRC message; MAC CE; data plane signaling.

[0203] Alternatively, when the device 500 is a network device, the functions of each module of the device 500 are as follows:

[0204] The transceiver module 501 is used to send first information to the terminal device, the first information being used to indicate a first configuration, and the first configuration being used to indicate a first time domain resource.

[0205] The transceiver module 501 is also configured to send a first PDCCH for scheduling the first signaling to the terminal device only on the first time domain resource.

[0206] In one possible implementation, the transceiver module 501 is further configured to send a second PDCCH for scheduling the first data to the terminal device on the first time domain resource.

[0207] In one possible implementation, the first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the transceiver module 501 is further used to send a second PDCCH for scheduling the first data to the terminal device on the second time-domain resource.

[0208] In one possible implementation, the first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time, which is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

[0209] In one possible implementation, the first time is associated with a second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

[0210] In one possible implementation, the first signaling is associated with the first data.

[0211] In one possible implementation, the first information is further used to indicate a third configuration, which is used to indicate a third time domain resource; the transceiver module 501 is further used to send a third PDCCH of scheduling second signaling to the terminal device only on the third time domain resource, the second signaling being different from the first signaling.

[0212] In one possible implementation, the first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the transceiver module 501 is further used to send the first PDCCH to the terminal device only on the first frequency domain resource.

[0213] In one possible implementation, the first signaling includes one or more of the following: RRC message; MAC CE; data plane signaling.

[0214] In practical implementation, the above-mentioned device 500 can have various product forms. Several possible product forms are introduced below.

[0215] See Figure 6 The diagram shows another communication device. The communication device 600 includes a processor 601, which uses logic circuits or execution instructions to implement the methods executed by the network device or terminal device in the above method embodiments.

[0216] Optionally, the communication device 600 may further include an interface circuit 602, which is used to receive signals from other communication devices outside the communication device and transmit them to the processor 601, or to send signals from the processor 601 to other communication devices outside the communication device. The processor 601 and the interface circuit 602 are coupled to each other. It is understood that the interface circuit 602 can be a transceiver or an input / output interface.

[0217] Optionally, the communication device 600 may also include a memory 603 for storing instructions executed by the processor 601, or storing input data required by the processor 601 to execute instructions, or storing data generated after the processor 601 executes instructions.

[0218] It should be understood that the processor mentioned in the embodiments of this application can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor, implemented by reading software code stored in memory.

[0219] For example, the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0220] It should be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0221] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0222] It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

[0223] Based on the same technical concept, embodiments of this application also provide a computer-readable storage medium storing a computer program or instructions, which, when executed by a processor, causes the methods executed by the terminal device and the network device in the above method embodiments to be implemented.

[0224] Based on the same technical concept, this application also provides a computer program product, which includes a computer program or instructions that, when executed by a processor, cause the methods executed by the terminal device and the network device in the above method embodiments to be implemented.

[0225] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0226] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0227] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0228] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

Claims

1. A communication method, characterized in that, include: Receive first information from a network device, the first information being used to indicate a first configuration, the first configuration being used to indicate a first time domain resource; The first physical downlink control channel (PDCCH) from the scheduling first signaling of the network device is detected only on the first time domain resource.

2. The method according to claim 1, characterized in that, The method further includes: A second PDCCH is detected on the first time domain resource for scheduling first data from the network device.

3. The method according to claim 1 or 2, characterized in that, The first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the method further includes: The second PDCCH is detected on the second time domain resource, which is the scheduling first data from the network device.

4. The method according to claim 3, characterized in that, The method further includes: The second PDCCH from the network device is detected on a portion of the resources in the second time domain.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: The first time is determined as one or more of the start time, end time, or duration of the terminal device detecting the first PDCCH.

6. The method according to any one of claims 1-5, characterized in that, The first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time. The first time is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

7. The method according to claim 5 or 6, characterized in that, The first time is associated with the second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

8. The method according to claim 7, characterized in that, The first signaling is associated with the first data.

9. The method according to any one of claims 1-8, characterized in that, The first information is further used to indicate a third configuration, the third configuration being used to indicate a third time-domain resource; the method further includes: The third PDCCH from the scheduling second signaling of the network device is detected only on the third time domain resource, and the second signaling is different from the first signaling.

10. The method according to any one of claims 1-9, characterized in that, The first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the method further includes: The first PDCCH from the network device is detected only on the first frequency domain resource.

11. The method according to any one of claims 1-10, characterized in that, The first signaling includes one or more of the following: Radio Resource Control (RRC) message; Media Access Control (MAC) CE; and data plane signaling.

12. A communication method, characterized in that, include: Send first information to the terminal device, the first information being used to indicate a first configuration, the first configuration being used to indicate a first time domain resource; The first PDCCH sends the scheduling first signaling to the terminal device only on the first time domain resource.

13. The method according to claim 12, characterized in that, The method further includes: A second PDCCH is sent to the terminal device on the first time domain resource to schedule the first data.

14. The method according to claim 12 or 13, characterized in that, The first information is further used to indicate a second configuration, the second configuration being used to indicate a second time-domain resource; the method further includes: A second PDCCH is sent to the terminal device on the second time domain resource to schedule the first data.

15. The method according to any one of claims 12-14, characterized in that, The first configuration includes a first parameter and / or a second parameter. The first parameter is used to indicate one or more of the following: detection period, period offset, number of detection slots in each detection period, and first detection symbol in each detection slot. The second parameter is used to indicate a first time, which is one or more of the following: start time, end time, or duration of the terminal device detecting the first PDCCH.

16. The method according to claim 15, characterized in that, The first time is associated with the second time, where the second time is one or more of the start time, end time, or duration of the terminal device transmitting the first data.

17. The method according to claim 16, characterized in that, The first signaling is associated with the first data.

18. The method according to any one of claims 12-17, characterized in that, The first information is further used to indicate a third configuration, the third configuration being used to indicate a third time-domain resource; the method further includes: The third PDCCH, which sends scheduling second signaling to the terminal device only on the third time domain resource, is different from the first signaling.

19. The method according to any one of claims 12-18, characterized in that, The first information is further used to indicate a fourth configuration, the fourth configuration being used to indicate a first frequency domain resource, the fourth configuration being associated with the first configuration; the method further includes: The first PDCCH is sent to the terminal device only on the first frequency domain resource.

20. The method according to any one of claims 12-19, characterized in that, The first signaling includes one or more of the following: RRC message; MAC CE; data plane signaling.

21. A communication device, characterized in that, The communication device includes a module for performing the method as described in any one of claims 1 to 11, or a module for performing the method as described in any one of claims 12 to 20.

22. A communication device, characterized in that, The communication device includes a processor, which is configured to perform the method as described in any one of claims 1 to 11, or the method as described in any one of claims 12 to 20.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program that, when run on a computer, causes the method as described in any one of claims 1 to 11 to be performed, or causes the method as described in any one of claims 12 to 20 to be performed.

24. A computer program product, characterized in that, The computer program product includes a computer program that, when run on a computer, causes the method as described in any one of claims 1 to 11 to be performed, or causes the method as described in any one of claims 12 to 20 to be performed.

25. A communication system, characterized in that, The communication system includes a terminal device and a network device, wherein the terminal device is used to implement the method as described in any one of claims 1 to 11, and the network device is used to implement the method as described in any one of claims 12 to 20.

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