Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device and a network device. The method comprises: a terminal device detects a first physical downlink control channel (PDCCH) sent by a network device, wherein the first PDCCH is a sequence detection-based PDCCH; and on the basis of a detection result of the first PDCCH, the terminal device detects or does not detect a second PDCCH, wherein the second PDCCH is a blind detection-based PDCCH. In embodiments of the present application, the terminal device can detect the sequence detection-based PDCCH (also referred to as the "first PDCCH"), and determine, on the basis of the detection result of the first PDCCH, whether to detect the blind detection-based PDCCH (also referred to as the "second PDCCH"). In a scenario compatible with the two types of PDCCHs (i.e., the sequence detection-based PDCCH and the blind detection-based PDCCH), the success rate of the terminal device in detecting a PDCCH is improved.

Description

Method of wireless communication, terminal device and network device TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method of wireless communication, a terminal device and a network device. BACKGROUND

[0002] Both the physical downlink control channel (PDCCH) based on sequence detection and the PDCCH based on blind detection have their own advantages and disadvantages. Therefore, in order to take into account the power consumption of the terminal device detecting the PDCCH and the PDCCH spectrum utilization, the embodiments of the present application propose that two types of PDCCHs, i.e., the PDCCH based on sequence detection and the PDCCH based on blind detection, can be compatible in a communication system. However, in this case, the terminal device cannot determine which type of PDCCH it should detect, resulting in the failure of the terminal device to detect the PDCCH.

[0003] SUMMARY

[0004] The present application provides a method of wireless communication, a terminal device and a network device. The various aspects involved in the present application are introduced below.

[0005] In a first aspect, a method of wireless communication is provided, comprising: a terminal device detecting a first physical downlink control channel (PDCCH) sent by a network device, the first PDCCH being a PDCCH based on sequence detection; and the terminal device detecting or not detecting a second PDCCH based on a detection result of the first PDCCH, the second PDCCH being a PDCCH based on blind detection.

[0006] In a second aspect, a method of wireless communication is provided, comprising: a network device sending a first physical downlink control channel (PDCCH), a detection result of the first PDCCH being used by a terminal device to determine whether to detect or not detect a second PDCCH, wherein the first PDCCH is a PDCCH based on sequence detection, and the second PDCCH is a PDCCH based on blind detection.

[0007] In a third aspect, a terminal device is provided, comprising: a processing unit configured to detect a first physical downlink control channel (PDCCH) sent by a network device, the first PDCCH being a PDCCH based on sequence detection; and the processing unit is further configured to detect or not detect a second PDCCH based on a detection result of the first PDCCH, the second PDCCH being a PDCCH based on blind detection.

[0008] In a fourth aspect, a network device is provided, which includes a sending unit configured to send a first physical downlink control channel (PDCCH), a detection result of the first PDCCH being used by the terminal device to determine whether to detect a second PDCCH, wherein the first PDCCH is a sequence detection based PDCCH, and the second PDCCH is a blind detection based PDCCH.

[0009] In a fifth aspect, a terminal device is provided, which includes a processor, a memory, and a communication interface, the memory being configured to store one or more computer programs, and the processor being configured to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, which includes a processor, a memory, and a transceiver, the memory being configured to store one or more computer programs, and the processor being configured to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the terminal device and / or the network device described above. In another possible design, the system can further include other devices interacting with the terminal device or the network device in the schemes provided by the embodiments of the present application.

[0012] In an eighth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program causes a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods of the aspects described above.

[0013] In a ninth aspect, an embodiment of the present application provides a computer program product, which includes a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods of the aspects described above. In some implementations, the computer program product can be a software installation package.

[0014] In a tenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor, and the processor can invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the aspects described above.

[0015] In the embodiments of the present application, the terminal device can detect the PDCCH based on sequence detection (also referred to as "first PDCCH"), and determine whether to detect the PDCCH based on blind detection (also referred to as "second PDCCH") based on the detection result of the PDCCH of this type, which is helpful to improve the success rate of the terminal device in detecting the PDCCH in the scenario of compatibility of the two types of PDCCH (i.e., the PDCCH based on sequence detection and the PDCCH based on blind detection). BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a wireless communication system 100 to which the embodiments of the present application are applied.

[0017] FIG. 2 is a flowchart of a signal transmission in a wireless communication system to which the embodiments of the present application are applied.

[0018] FIG. 3 is a schematic diagram of a structure of a resource element group (REG) in a PDCCH to which the embodiments of the present application are applied.

[0019] FIG. 4A, FIG. 4B and FIG. 4C are schematic diagrams of three possible structures of a CCE in a PDCCH to which the embodiments of the present application are applied.

[0020] FIG. 5 is a schematic diagram of a structure of a PDCCH to which the embodiments of the present application are applied.

[0021] FIG. 6 is a schematic flowchart of a method of wireless communication according to the embodiments of the present application.

[0022] FIG. 7 is a schematic flowchart of a method of detecting a PDCCH according to the embodiments of the present application.

[0023] FIG. 8 is a schematic diagram of a scheme of determining a second PDCCH associated with a first PDCCH based on Example 1 according to the embodiments of the present application.

[0024] FIG. 9 to FIG. 11 are schematic diagrams of a scheme of determining a second PDCCH associated with a first PDCCH based on Example 2 according to the embodiments of the present application.

[0025] FIG. 12 to FIG. 13 are schematic diagrams of a scheme of determining a second PDCCH associated with a first PDCCH based on Example 3 according to the embodiments of the present application.

[0026] FIG. 14 is a schematic diagram of a terminal device according to the embodiments of the present application.

[0027] FIG. 15 is a schematic diagram of a network device according to the embodiments of the present application.

[0028] FIG. 16 is a schematic structural diagram of a communication apparatus according to the embodiments of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the present application will be described below with reference to the drawings. In order to facilitate understanding of the present application, first, the communication system and the communication process to which the embodiments of the present application are applicable will be introduced with reference to FIGS. 1 to 4.

[0030] FIG. 1 is a wireless communication system 100 to which the embodiments of the present application are applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide communication coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area.

[0031] FIG. 1 exemplarily shows one network device and two terminals. Alternatively, the wireless communication system 100 can include a plurality of network devices and each network device can include other numbers of terminal devices within the coverage range, which is not limited in the embodiments of the present application.

[0032] Alternatively, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited in the embodiments of the present application.

[0033] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a 5th generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided by the present application can also be applied to future communication systems, such as a 6th generation mobile communication system, a satellite communication system, and the like.

[0034] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device that provides voice and / or data connectivity for a user, and can be used to connect people, things and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, which provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and the smart home device communicate with each other without relaying the communication signals through the base station.

[0035] The network device in the embodiments of the present application can be a device for communicating with a terminal device, which can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, auxiliary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device that undertakes the function of a base station in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, network side device in 6G network, device that undertakes the function of a base station in future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0036] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0037] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU, or the network device includes a CU and a DU. The gNB can also include an AAU.

[0038] The network device and the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; and can also be deployed on the aircraft, balloon and satellite in the air. The scene where the network device and the terminal device are located is not limited in the embodiments of the present application.

[0039] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform).

[0040] I. Signal transmission process in a wireless communication system

[0041] FIG. 2 is a flowchart of signal transmission in a wireless communication system to which the embodiments of the present application are applicable. As shown in FIG. 2, the signal transmission process in the wireless communication system can be roughly divided into various signal processing processes shown in FIG. 2. Part or all of the signal processing processes shown in FIG. 2 can be implemented by a separate AI model.

[0042] The transmitter performs channel coding on the information to be transmitted in the channel coding process, and obtains a coded stream. The information to be transmitted can be in the form of a bit stream.

[0043] In the modulation process, the coded stream is modulated into modulation symbols.

[0044] In the pilot insertion process, a pilot symbol is inserted into the modulation symbol to form a signal to be transmitted, wherein the pilot symbol can be used for channel estimation and symbol detection by the receiver.

[0045] In the transmission signal, the above signal is carried on the channel and transmitted to the receiver. In the transmission process of the signal through the channel, noise is usually superimposed.

[0046] In the channel estimation process, the receiver can perform channel estimation based on the reference signal to obtain channel state information (channel state information-reference signal, CSI), and feed back the CSI to the transmitter through a feedback link for the transmitter to adjust the channel coding, modulation, precoding and the like.

[0047] In the symbol detection process, the received modulation symbol is subjected to symbol detection to obtain a detection result.

[0048] In the demodulation process, the received modulation symbol is demodulated based on the detection result to obtain a coded stream.

[0049] In the channel decoding process, the code stream is decoded to obtain the recovered information, where the recovered information can be in the form of a bit stream.

[0050] It should be understood that the signal processing process shown in FIG. 2 is only exemplary of common signal processing processes in a wireless communication system, and the wireless communication system can also include resource mapping, precoding, interference cancellation, CSI measurement, and other signal processing processes, which can also be implemented by separate artificial intelligence (AI) models. For the sake of brevity, the present application will not go into further detail.

[0051] II. PDCCH resource configuration

[0052] In some communication systems (for example, 5G NR), PDCCHs are periodically transmitted in the time domain, and each PDCCH can contain downlink control information (DCI) for multiple terminal devices in the cell. Therefore, the terminal device needs to perform blind detection on the PDCCH that can have DCI related to itself at the time domain location configured by the network device, so as to find the DCI related to itself. In this case, even if the network device does not transmit the DCI related to the terminal device in a certain PDCCH, the terminal device must still perform blind detection on this PDCCH. Although this PDCCH detection method achieves high multiplexing of DCI for all terminal devices in the cell, it requires a large amount of unnecessary blind detection for the terminal device, resulting in high power consumption for the terminal device to detect the PDCCH.

[0053] The structure of the PDCCH is described below with reference to FIGS. 3-5. In some implementations, the basic unit of the PDCCH is a resource element group (REG). Referring to FIG. 3, an REG occupies 1 symbol in the time domain and 12 subcarriers in the frequency domain. The REG includes 12 resource elements (REs), of which 3 REs are used for reference signal (RS) transmission and 9 REs are used for data transmission.

[0054] In some implementations, 6 REGs constitute a control channel element (CCE). Three possible structures of the CCE are described below with reference to FIGS. 4A-4C.

[0055] Referring to FIG. 4A, for a control resource set (CORESET) of 3 symbol length, a CCE in the CORESET includes 6 REGs, which occupy 3 symbols in the time domain and 24 subcarriers in the frequency domain. That is, the 6 REGs are arranged in 3 rows in the time domain and 2 columns in the frequency domain.

[0056] Referring to FIG. 4B, for a CORESET of 2 symbol length, a CCE in the CORESET includes 6 REGs, which occupy 2 symbols in the time domain and 36 subcarriers in the frequency domain. That is, the 6 REGs are arranged in 2 rows in the time domain and 3 columns in the frequency domain.

[0057] Referring to FIG. 4C, for a CORESET of 1 symbol length, a CCE in the CORESET includes 6 REGs, which occupy 2 symbols in the time domain and 36 subcarriers in the frequency domain. That is, the 6 REGs are arranged in 1 row in the time domain and 6 columns in the frequency domain.

[0058] In some implementations, one PDCCH includes N (N = 1, 2, 4, 8, or 16) same CCEs arranged in the frequency domain. For example, referring to FIG. 5, a CORESET of 3 symbol length is used. N can be referred to as an aggregation level. Generally, the larger N is, the more times the CCEs are repeated, and the better the PDCCH transmission performance is, but the more time-frequency resources consumed for transmitting the PDCCH.

[0059] In some communication systems (for example, a 5G system), a control channel (such as a PDCCH or a physical uplink control channel (PUCCH)) generally uses Polar encoding, and a data channel (such as a PDSCH or a PUSCH) uses low density parity code (LDPC) encoding.

[0060] In some scenarios, the PDCCH described above that requires blind detection by a terminal device can also be referred to as a “monitoring-based PDCCH” or a “PDCCH candidate detection-based PDCCH” or a “blind detection-based PDCCH”.

[0061] As described above, for the PDCCH based on detection, the DCI of a large number of terminal devices can be multiplexed in one PDCCH for transmission, which helps to improve the PDCCH spectrum utilization and the scheduling efficiency of the communication system. But as a cost, such a terminal device needs to perform blind detection on this type of PDCCH. Even if the network device does not send the DCI of a certain terminal device in the PDCCH, the terminal device needs to periodically search for the DCI in the PDCCH, thus consuming a large amount of energy of the terminal device.

[0062] Correspondingly, in order to reduce the energy consumed by the terminal device for blind detection, a PDCCH based on sequence detection is proposed, for which the detection result of the sequence is used to indicate whether the PDSCH associated with the PDCCH has data corresponding to the terminal device. For example, the terminal device first detects the PDCCH based on sequence detection, and if the sequence corresponding to the terminal device is detected, it means that the PDSCH associated with the PDCCH based on sequence detection has data of the terminal device, and therefore the terminal device can directly receive the PDSCH located after the PDCCH based on sequence detection. Conversely, if the sequence corresponding to the terminal device is not detected, it means that the PDSCH associated with the PDCCH based on sequence detection does not have data of the terminal device, and therefore the terminal device can no longer receive the PDSCH and enter a sleep state. This method can reduce the complexity of PDCCH detection compared to PDCCH blind detection, thereby reducing the energy required by the terminal device for PDCCH.

[0063] In some scenarios, the above-mentioned PDCCH based on sequence detection can also be referred to as "sequence-based PDCCH".

[0064] As described above, for this PDCCH based on sequence detection, different terminal devices need to correspond to different sequences, but since the sequence usually adopts an orthogonal sequence, the number of orthogonal sequences is limited, which is difficult to correspond to a large number of terminal devices, resulting in that this PDCCH based on sequence detection cannot be applied to scenarios where a large number of terminal devices exist.

[0065] As can be seen from the above, both the PDCCH based on sequence detection and the PDCCH based on blind detection have their own advantages and disadvantages. Therefore, in order to take into account the power consumption of the terminal device for detecting the PDCCH and the PDCCH spectrum utilization, the embodiments of the present application propose that the two types of PDCCH, the PDCCH based on sequence detection and the PDCCH based on blind detection, can be compatible in the communication system. However, in this case, the terminal device cannot determine which type of PDCCH it should detect.

[0066] Therefore, to solve the above problems, the terminal device can detect a PDCCH based on sequence detection (hereinafter referred to as "first PDCCH"), and determine whether to detect a PDCCH based on blind detection (hereinafter referred to as "second PDCCH") based on the detection result of the PDCCH of this type. For ease of understanding, the scheme of the present application is introduced below in combination with FIG. 6.

[0067] FIG. 6 is a schematic flowchart of a method of wireless communication according to an embodiment of the present application. The method shown in FIG. 6 includes step S610 and step S620.

[0068] In step S610, the terminal device detects a first PDCCH sent by the network device.

[0069] In some implementations, the first PDCCH is a PDCCH based on sequence detection, or in other words, the type of the first PDCCH is a PDCCH based on sequence detection.

[0070] In some implementations, the PDCCH based on sequence detection can include a first part and a second part, wherein the first part is used to carry a sequence in the first PDCCH, and therefore the first part is also referred to as a "sequence part". Correspondingly, the second part is used to carry a payload, wherein the payload can carry DCI and data (for example, data with a small amount of data). Therefore, the second part is also referred to as a "payload part" or an "effective payload part".

[0071] In the present application, the data corresponding to the terminal device can be directly carried in the payload, which helps to reduce the energy required by the terminal device to receive data, compared to the conventional scheme in which the terminal device first receives DCI from the payload, and then determines the data channel of the transmitted data based on the DCI.

[0072] In some implementations, the sequence carried in the first part is used to indicate the terminal device corresponding to the information in the payload, and accordingly, the terminal device can determine whether the payload contains data or DCI corresponding to the terminal device based on the sequence. Wherein, the data or DCI corresponding to the terminal device can be understood as the data or DCI that the network device wants to send to the terminal device. In addition, the related introduction of the PDCCH based on sequence detection can be referred to the foregoing.

[0073] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0074] In the step S620, the terminal device detects or does not detect the second PDCCH based on the detection result of the first PDCCH.

[0075] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0076] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0077] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0078] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0079] In some scenarios, the step S620 can be replaced by determining, by the terminal device, whether to detect the second PDCCH based on the detection result of the first PDCCH.

[0080] In some embodiments, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, the terminal device detects or does not detect the second PDCCH based on whether the information carried in the first PDCCH corresponds to the terminal device. Alternatively, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, the terminal device determines to detect or not to detect the second PDCCH based on whether the information carried in the first PDCCH corresponds to the terminal device.

[0081] In some embodiments, if the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the terminal device does not detect the second PDCCH. That is, if the information carried in the first PDCCH corresponds to the terminal device, the terminal device has obtained the required information, and thus, can no longer detect the second PDCCH to reduce the power consumption of detecting PDCCH.

[0082] In some other embodiments, if the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH does not correspond to the terminal device, the terminal device detects the second PDCCH. That is, if the information carried in the first PDCCH does not correspond to the terminal device, the information corresponding to the terminal device can be carried in the second PDCCH, and thus, the terminal device needs to continue to detect the second PDCCH.

[0083] It should be noted that the information carried in the first PDCCH does not correspond to the terminal device can mean that the information is carried in the payload of the first PDCCH, but the information does not correspond to the terminal device, for example, the DCI or data carried in the payload of the first PDCCH is not the DCI or data of the terminal device. Alternatively, the information carried in the first PDCCH does not correspond to the terminal device can mean that the payload of the first PDCCH is empty.

[0084] It should be further noted that the sequence of the first PDCCH does not correspond to the terminal device can mean that the sequence of the first PDCCH does not match the sequence configured for the terminal device, or in other words, the sequence of the first PDCCH is different from the sequence configured for the terminal device. Taking the sequence as an orthogonal sequence as an example, the sequence of the first PDCCH does not correspond to the terminal device can mean that the orthogonal sequence of the first PDCCH does not match the orthogonal sequence configured for the terminal device.

[0085] For ease of understanding, the method for detecting PDCCH in the embodiments of the present application is described below in combination with FIG. 7. The method shown in FIG. 7 includes steps S710 to S770.

[0086] In step S710, the terminal device receives the first PDCCH transmitted by the network device.

[0087] In step S720, the terminal device detects whether the sequence in the first PDCCH corresponds to the terminal device.

[0088] That is, the terminal device confirms whether the sequence in the first PDCCH matches the sequence configured for the terminal device.

[0089] In some implementations, if the terminal device detects that the sequence in the first PDCCH does not correspond to the terminal device, step S730 is performed. Conversely, if the terminal device detects that the sequence in the first PDCCH corresponds to the terminal device, step S740 is performed.

[0090] In step S730, the terminal device enters a dormant state.

[0091] In some implementations, the terminal device no longer detects the payload part of the first PDCCH and the second PDCCH associated with the first PDCCH, and enters the dormant state.

[0092] In step S740, the terminal device detects the payload in the first PDCCH.

[0093] In step S750, the terminal device detects whether the payload in the first PDCCH corresponds to the terminal device.

[0094] For example, the terminal device confirms whether the data or DCI in the first PDCCH is the data or DCI of the terminal device.

[0095] In some implementations, if the terminal device detects that the data or DCI in the payload of the first PDCCH does not correspond to the terminal device, i.e., the terminal device does not detect data or DCI belonging to itself from the payload, step S760 is performed. Conversely, if the terminal device detects that the payload in the first PDCCH corresponds to the terminal device, i.e., the terminal device detects data or DCI belonging to itself from the payload, step S770 is performed.

[0096] In step S760, the terminal device detects the second PDCCH associated with the first PDCCH.

[0097] In some implementations, the second PDCCH associated with the first PDCCH can be a second PDCCH transmitted before the first time, which will be described below in connection with FIGS. 8-13.

[0098] In step S770, the terminal device receives the payload in the first PDCCH.

[0099] For example, the terminal device receives data or DCI in the first PDCCH.

[0100] Generally, detecting the PDCCH based on blind detection is one of the main reasons for the terminal device to consume energy, the terminal device receives DCI by detecting the PDCCH based on blind detection, and then receives the downlink data channel according to the scheduling information in the DCI. At this time, even when the network device does not send DCI for a certain terminal device, the terminal device must periodically perform blind detection on the PDCCH, resulting in the terminal device consuming a large amount of energy. Therefore, in the embodiments of the present application, the terminal device can determine whether to detect or not to detect the PDCCH based on blind detection based on the detection result of the PDCCH based on sequence, which helps to reduce the energy consumed by the terminal device to detect the PDCCH. This is because the detection based on sequence is a one-time detection, which does not require multiple blind detections.

[0101] On the other hand, compared with the DCI decoding based on channel coding (also known as "forward error correction" (FEC)), the energy consumed by the detection based on sequence is much lower. For example, when the terminal device detects the PDCCH based on sequence, only when the terminal device detects the corresponding sequence, the demodulator and the FEC decoder are turned on to receive the data in the PDCCH based on sequence. Compared with the terminal device turning on the demodulator and the FEC decoder to receive the DCI every time the terminal device performs blind detection, whether the DCI is the DCI for the terminal device or not, which helps to reduce unnecessary turning on of the demodulator and the FEC decoder, so as to reduce the energy consumption of the terminal device.

[0102] As described above, the second PDCCH is a PDCCH associated with the first PDCCH. The scheme for determining the second PDCCH in the embodiments of the present application is described below.

[0103] In some implementations, the second PDCCH is determined based on the first time, or in other words, the second PDCCH detected by the terminal device is determined based on the first time. In other words, the first time is used to determine the second PDCCH detected by the terminal device.

[0104] In some implementations, all the second PDCCHs determined based on the first time are the PDCCHs that need to be detected by the terminal device, which is described below in combination with FIGS. 8-10, 12-13.

[0105] That is, the step S620 includes: the terminal device detects or does not detect the second PDCCH located before the first time based on the detection result of the first PDCCH. Or, the second PDCCH transmitted before the first time is the PDCCH detected by the terminal device. At this time, it can be understood that the first time is used to indicate the end time of the terminal device detecting the second PDCCH. Of course, in the embodiment of the application, the terminal device detects or does not detect the second PDCCH located after the first time based on the detection result of the first PDCCH, that is, the second PDCCH transmitted after the second time is the PDCCH detected by the terminal device. At this time, the first time is used to indicate the start time of the terminal device detecting the second PDCCH.

[0106] Of course, in the embodiment of the application, the second PDCCH determined based on the first time is part or all of the second PDCCH that needs to be detected by the terminal device. For example, the second PDCCH determined based on the first time and the first bitmap is the PDCCH that needs to be detected by the terminal device, which will be introduced below in conjunction with FIG. 11.

[0107] In some scenarios, the first time can correspond to a time domain position in the time domain, and correspondingly, the second PDCCH is determined based on the first time, which can be replaced by that the second PDCCH is determined based on the first time domain position. It should be understood that in the embodiment of the application, the determination method of the first time introduced below, the first time can be replaced by the first time domain position.

[0108] The first time in the embodiment of the application is introduced below in conjunction with Examples 1-3 taking the first time indicating the end time of the terminal device detecting the second PDCCH as an example.

[0109] Example 1: The first time is determined based on the time domain position of the third PDCCH, the third PDCCH is a PDCCH based on sequence detection, and the third PDCCH is later than the first PDCCH in the time domain.

[0110] That is, the second PDCCH associated with the first PDCCH can be one or more PDCCHs based on blind detection located between the first PDCCH and the third PDCCH in the time domain.

[0111] Correspondingly, the terminal device can only detect the search space of the first second PDCCH after the first PDCCH.

[0112] In some embodiments, the third PDCCH is a PDCCH adjacent to the first PDCCH in the time domain among the PDCCHs based on sequence detection, or in other words, the third PDCCH is the next PDCCH based on sequence detection after the first PDCCH in the time domain. Of course, in the embodiments of the present application, there can be multiple PDCCHs based on sequence detection between the third PDCCH and the first PDCCH.

[0113] In some scenarios, the PDCCHs based on sequence detection can be transmitted periodically. If the third PDCCH is the next PDCCH based on sequence detection after the first PDCCH in the time domain, then the third PDCCH is separated from the first PDCCH by one period.

[0114] In the embodiments of the present application, the manner of determining the first time based on the third PDCCH is not limited. In some embodiments, the first time can be the time corresponding to the end of the time domain of the third PDCCH. In other embodiments, the first time can be the time corresponding to the start of the time domain of the third PDCCH. Of course, in the embodiments of the present application, the first time can also be determined based on the time domain position of the third PDCCH and a time domain offset value. For example, the first time can be determined by taking the time domain position of the third PDCCH as the starting position and then offsetting by the time domain offset value.

[0115] For ease of understanding, the following describes the scheme of determining the second PDCCH associated with the first PDCCH based on Example 1 in the embodiments of the present application in conjunction with FIG. 8.

[0116] Referring to FIG. 8, it is assumed that the PDCCHs based on sequence detection are transmitted periodically, and 3 PDCCHs based on blind detection are transmitted in each transmission period of the PDCCHs based on sequence detection. The PDCCHs based on sequence detection are PDCCH1-1, PDCCH1-2, PDCCH1-3 and PDCCH1-4 respectively, and the PDCCHs based on blind detection located between the time domain position of PDCCH1-1 and the time domain position of PDCCH1-2 are PDCCH2-1, PDCCH2-2 and PDCCH2-3 respectively. The PDCCHs based on blind detection located between the time domain position of PDCCH1-2 and the time domain position of PDCCH1-3 are PDCCH2-4, PDCCH2-5 and PDCCH2-6 respectively. The PDCCHs based on blind detection located between the time domain position of PDCCH1-3 and the time domain position of PDCCH1-4 are PDCCH2-7, PDCCH2-8 and PDCCH2-9 respectively.

[0117] If the first time is the time corresponding to the time domain end position of PDCCH1-2, and the second PDCCH (i.e., the PDCCH based on blind detection) associated with PDCCH1-1 is PDCCH2-1, PDCCH2-2, and PDCCH2-3, at this time, if the sequence detected by the terminal device from PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect PDCCH1-1, PDCCH2-1, PDCCH2-2, and PDCCH2-3, that is, the terminal device does not detect PDCCH1-1 and the PDCCH based on blind detection associated with PDCCH1-1.

[0118] If the first time is the time corresponding to the time domain end position of PDCCH1-3, and the second PDCCH (i.e., the PDCCH based on blind detection) associated with PDCCH1-2 is PDCCH2-4, PDCCH2-5, and PDCCH2-6, at this time, if the sequence detected by the terminal device from PDCCH1-2 corresponds to the terminal device, and the DCI or data belonging to the terminal device is detected from the payload of PDCCH1-2, the terminal device does not detect PDCCH2-4, PDCCH2-5, and PDCCH2-6, that is, the terminal device does not detect the PDCCH based on blind detection associated with PDCCH1-2.

[0119] If the first time is the time corresponding to the time domain end position of PDCCH1-4, and the second PDCCH (i.e., the PDCCH based on blind detection) associated with PDCCH1-3 is PDCCH2-7, PDCCH2-8, and PDCCH2-9, at this time, if the sequence detected by the terminal device from PDCCH1-3 corresponds to the terminal device, but the DCI or data belonging to the terminal device is not detected from the payload of PDCCH1-3, the terminal device detects PDCCH2-7, PDCCH2-8, and PDCCH2-9, that is, the terminal device detects the PDCCH based on blind detection associated with PDCCH1-3.

[0120] In the embodiments of the present application, taking the periodic transmission of the PDCCH based on sequence detection as an example, the second PDCCH associated with the first PDCCH can be based on the period, or in other words, the terminal device can determine the range of the PDCCH based on blind detection based on the period, which helps to reduce the signaling overhead of the network device for configuring the second PDCCH associated with the first PDCCH for the terminal device.

[0121] Example 2: The second PDCCH includes one or more PDCCHs, and the first time is determined based on the search space of the one or more PDCCHs.

[0122] That is to say, the first time can be determined based on a search space of one or more blind detection based PDCCHs associated with the first PDCCH. Accordingly, the terminal device can detect the search space of the K second PDCCHs after the first PDCCH, where K is an integer greater than or equal to 1.

[0123] In the embodiments of the present application, the configuration manner of the value of K is not limited. In some implementations, the value of K can be configured by high layer signaling, or configured by the first PDCCH.

[0124] In some scenarios, if there are multiple first PDCCHs, the values of K associated with the multiple first PDCCHs can be different, which helps to improve the flexibility of indicating the search space of the second PDCCH associated with the first PDCCH that the terminal device needs to detect. Of course, in the embodiments of the present application, the values of K associated with the multiple first PDCCHs can be the same, which helps to simplify the configuration. Wherein, the value of K associated with the first PDCCH is used to indicate the number of search spaces of the second PDCCH associated with the first PDCCH that the terminal device needs to detect.

[0125] In some implementations, the second PDCCH is one PDCCH, and the second PDCCH is the first blind detection based PDCCH after the first PDCCH in the time domain, or in other words, the second PDCCH is the next blind detection based PDCCH of the first PDCCH. Of course, in the embodiments of the present application, the second PDCCH associated with the first PDCCH and the first PDCCH can be separated by one or more blind detection based PDCCHs.

[0126] In some implementations, the second PDCCH includes one or more PDCCHs located between the first PDCCH and the fourth PDCCH in the time domain, and the fourth PDCCH is the PDCCH adjacent to the first PDCCH in the time domain among the sequence detection based PDCCHs, or in other words, the fourth PDCCH is the next sequence detection based PDCCH of the first PDCCH in the time domain.

[0127] In some embodiments, the search space corresponding to the one or more PDCCHs is determined based on a bitmap (also referred to as a "first bitmap"). For example, each bit in the bitmap can correspond to a search space of a PDCCH. If the value of the bit is a first value, it indicates that the search space of the corresponding PDCCH corresponds to a second PDCCH associated with a first PDCCH, and accordingly, the terminal device can perform detection in the search space of the PDCCH. Conversely, if the value of the bit is a second value, it indicates that the search space of the corresponding PDCCH does not correspond to a second PDCCH associated with a first PDCCH, and accordingly, the terminal device can not perform detection in the search space of the PDCCH. The first value and the second value are different. For example, the first value can be 1 and the second value can be 0. For another example, the first value can be 0 and the second value can be 1.

[0128] In the embodiments of the present application, the configuration manner of the bitmap is not limited. In some embodiments, the bitmap can be configured by high layer signaling or by the first PDCCH.

[0129] In some scenarios, if there are multiple first PDCCHs, the bitmaps associated with the multiple first PDCCHs can be different, which helps to improve the flexibility of indicating the search space of the second PDCCH associated with the first PDCCH that needs to be detected by the terminal device. Of course, in the embodiments of the present application, the bitmaps associated with the multiple first PDCCHs can be the same, which helps to simplify the configuration. The bitmap associated with the first PDCCH is used to indicate the search space of the second PDCCH associated with the first PDCCH that needs to be detected by the terminal device.

[0130] To facilitate understanding, the schemes for determining the second PDCCH associated with the first PDCCH based on Example 2 in the embodiments of the present application are introduced below in conjunction with FIGS. 9-11.

[0131] It is assumed that the PDCCH based on sequence detection is transmitted periodically, and the blind detection based PDCCH associated with each PDCCH based on sequence detection is the next blind detection based PDCCH of the PDCCH based on sequence detection, that is, the first time is determined according to the search space of the next blind detection based PDCCH of the PDCCH based on sequence detection. Referring to FIG. 9, the PDCCH based on sequence detection is PDCCH1-1, PDCCH1-2, PDCCH1-3 and PDCCH1-4, respectively, and accordingly, the blind detection based PDCCH associated with PDCCH1-1 is PDCCH2-1. The blind detection based PDCCH associated with PDCCH1-2 is PDCCH2-4. The blind detection based PDCCH associated with PDCCH1-3 is PDCCH2-7.

[0132] If the sequence detected by the terminal device from the PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect the search space of the PDCCH1-1 and the first PDCCH based on blind detection after the PDCCH1-1, i.e., the terminal device does not detect the search space of the PDCCH1-1 and the PDCCH2-1.

[0133] If the sequence detected by the terminal device from the PDCCH1-2 corresponds to the terminal device, and the data or DCI belonging to the terminal device is detected from the payload of the PDCCH1-2, the terminal device does not detect the search space of the first PDCCH based on blind detection after the PDCCH1-2, i.e., the terminal device does not detect the search space of the PDCCH2-4.

[0134] If the sequence detected by the terminal device from the PDCCH1-3 corresponds to the terminal device, and the data or DCI belonging to the terminal device is not detected from the payload of the PDCCH1-3, the terminal device only detects the search space of the first PDCCH based on blind detection after the PDCCH1-3, i.e., the terminal device only detects the search space of the PDCCH2-7.

[0135] It is assumed that the PDCCH based on sequence detection is transmitted periodically, and the PDCCH based on blind detection associated with each PDCCH based on sequence detection is the K PDCCHs based on blind detection after the PDCCH based on sequence detection, where K=2. That is, the first time is determined according to the search space of the two PDCCHs based on blind detection after the PDCCH based on sequence detection. Referring to FIG. 10, the PDCCHs based on sequence detection are PDCCH1-1, PDCCH1-2, PDCCH1-3 and PDCCH1-4, respectively, and correspondingly, the PDCCHs based on blind detection associated with the PDCCH1-1 are PDCCH2-1 and PDCCH2-2. The PDCCHs based on blind detection associated with the PDCCH1-2 are PDCCH2-4 and PDCCH2-5. The PDCCHs based on blind detection associated with the PDCCH1-3 are PDCCH2-7 and PDCCH2-8.

[0136] If the sequence detected by the terminal device from the PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect the search space of the PDCCH1-1 and the first PDCCH based on blind detection after the PDCCH1-1, i.e., the terminal device does not detect the search space of the PDCCH1-1, the PDCCH2-1 and the PDCCH2-2.

[0137] If the sequence detected by the terminal device from the PDCCH1-2 corresponds to the terminal device, and the data or DCI belonging to the terminal device is detected from the payload of the PDCCH1-2, the terminal device does not detect the search space of the two blind detection-based PDCCHs after the PDCCH1-2, that is, the terminal device does not detect the search space of the PDCCH2-4 and the search space of the PDCCH2-5.

[0138] If the sequence detected by the terminal device from the PDCCH1-3 corresponds to the terminal device, and the data or DCI belonging to the terminal device is not detected from the payload of the PDCCH1-3, the terminal device detects the search space of the two blind detection-based PDCCHs after the PDCCH1-3, that is, the terminal device detects the search space of the PDCCH2-7 and the search space of the PDCCH2-8.

[0139] It should be noted that the value of K can be configured by high layer signaling or indicated by the sequence detection-based PDCCH. In addition, in the embodiments of the present application, the values of K associated with different sequence detection-based PDCCHs can be the same or different. For example, the value of K associated with the PDCCH1-1, the value of K associated with the PDCCH1-2, and the value of K associated with the PDCCH1-3 are all different. For another example, the value of K associated with the PDCCH1-1, the value of K associated with the PDCCH1-2, and the value of K associated with the PDCCH1-3 are all the same.

[0140] It is assumed that the sequence detection-based PDCCH is transmitted periodically, and the blind detection-based PDCCH associated with each sequence detection-based PDCCH is the K blind detection-based PDCCHs after the sequence detection-based PDCCH, where K=3. That is, the first time is determined according to the search space of the three blind detection-based PDCCHs after the sequence detection-based PDCCH. In addition, the first bitmap is used to indicate the search space that needs to be detected by the terminal device in the three blind detection-based PDCCHs associated with each sequence detection-based PDCCH. Wherein, the first bitmap is "101", 1 corresponds to the search space indicating the search space that needs to be detected by the terminal device, and 0 corresponds to the search space indicating the search space that does not need to be detected by the terminal device.

[0141] Referring to FIG. 11, the sequence detection based PDCCHs are PDCCH1-1, PDCCH1-2, PDCCH1-3 and PDCCH1-4 respectively, and the blind detection based PDCCHs associated with PDCCH1-1 are PDCCH2-1, PDCCH2-2 and PDCCH2-3 respectively. The first bitmap indicates that the search space of PDCCH2-1 and the search space of PDCCH2-3 are the search spaces that the terminal device needs to detect, and the search space of PDCCH2-2 is the search space that the terminal device does not need to detect.

[0142] The blind detection based PDCCHs associated with PDCCH1-2 are PDCCH2-4, PDCCH2-5 and PDCCH2-6. The first bitmap indicates that the search space of PDCCH2-4 and the search space of PDCCH2-6 are the search spaces that the terminal device needs to detect, and the search space of PDCCH2-5 is the search space that the terminal device does not need to detect.

[0143] The blind detection based PDCCHs associated with PDCCH1-3 are PDCCH2-7, PDCCH2-8 and PDCCH2-9. The first bitmap indicates that the search space of PDCCH2-7 and the search space of PDCCH2-9 are the search spaces that the terminal device needs to detect, and the search space of PDCCH2-8 is the search space that the terminal device does not need to detect.

[0144] If the sequence detected by the terminal device from PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect the search spaces of PDCCH1-1 and the three blind detection based PDCCHs after PDCCH1-1, i.e., the terminal device does not detect the search spaces of PDCCH1-1, PDCCH2-1, PDCCH2-2 and PDCCH2-3.

[0145] If the sequence detected by the terminal device from PDCCH1-2 corresponds to the terminal device, and the data or DCI belonging to the terminal device is detected from the payload of PDCCH1-2, the terminal device does not detect the search spaces of the three blind detection based PDCCHs after PDCCH1-2, i.e., the terminal device does not detect the search spaces of PDCCH2-4, PDCCH2-5 and PDCCH2-6.

[0146] If the sequence detected by the terminal device from the PDCCH 1-3 corresponds to the terminal device, and no data or DCI belonging to the terminal device is detected from the payload of the PDCCH 1-3, the terminal device detects the search space of the PDCCH associated with the PDCCH 1-3 based on the first bitmap based on blind detection, that is, the terminal device detects the search space of the PDCCH 2-7 and the search space of the PDCCH 2-9, and the terminal device does not detect the search space of the PDCCH 2-8.

[0147] It should be noted that the first bitmap can be configured by high layer signaling or indicated by the PDCCH based on sequence detection. In addition, in the embodiments of the present application, the first bitmap associated with different PDCCHs based on sequence detection can be the same or different. For example, the first bitmap associated with the PDCCH 1-1, the first bitmap associated with the PDCCH 1-2, and the first bitmap associated with the PDCCH 1-3 are all different. For another example, the first bitmap associated with the PDCCH 1-1, the first bitmap associated with the PDCCH 1-2, and the first bitmap associated with the PDCCH 1-3 are all the same.

[0148] In the embodiments of the present application, the first bitmap can be used to indicate the search space of the second PDCCH that needs to be detected by the terminal device in the plurality of second PDCCHs associated with the first PDCCH, which helps to improve the flexibility of indicating the search space of the second PDCCH to be detected by the terminal device.

[0149] Example 3: The first time is determined based on a first time period.

[0150] In some implementations, the first time period is configured by first configuration information, the first configuration information is associated with a bandwidth part BWP where the terminal device is located, or the first configuration information is associated with a carrier where the terminal device is located. Of course, in the embodiments of the present application, the first configuration information can also be general configuration information.

[0151] Taking the case that the first configuration information is associated with the bandwidth part BWP where the terminal device is located as an example, it can be understood that the first time period is configured for different BWPs. At this time, the first time period configured for different BWPs can be different or the same.

[0152] Taking the case that the first configuration information is associated with the carrier where the terminal device is located as an example, it can be understood that the first time period is configured for different carriers. At this time, the first time period configured for different carriers can be different or the same.

[0153] In the embodiments of the present application, the manner of representing the first time period is not limited. In some implementations, the first time period can be represented by a time length, and the unit of the time length can be, for example, millisecond, second, minute, etc. In other implementations, the first time period can be represented by the number of time domain resources, where the time domain resources can include, for example, symbols and / or time slots, etc.

[0154] In the embodiments of the present application, the manner of determining the first time based on the first time period is not limited. In some implementations, the first time can be the start time of the first time period. In other implementations, the first time can be the end time of the first time period.

[0155] For ease of understanding, the scheme for determining the second PDCCH associated with the first PDCCH based on Example 3 in the embodiments of the present application is introduced below in combination with FIGS. 12-13.

[0156] It is assumed that the PDCCH based on sequence detection is transmitted periodically, and the PDCCH based on blind detection associated with each PDCCH based on sequence detection is the PDCCH based on blind detection transmitted within the first time period T corresponding to the PDCCH based on sequence detection, that is, the first time is determined according to the search space of the PDCCH based on blind detection transmitted within the first time period T. Referring to FIG. 12, the PDCCH based on sequence detection is PDCCH1-1, PDCCH1-2, PDCCH1-3 and PDCCH1-4 respectively, and correspondingly, the PDCCH based on blind detection associated with PDCCH1-1 is PDCCH2-1 and PDCCH2-2 transmitted within the first time period T. The PDCCH based on blind detection associated with PDCCH1-2 is PDCCH2-4 and PDCCH2-5 transmitted within the first time period T. The PDCCH based on blind detection associated with PDCCH1-3 is PDCCH2-7 and PDCCH2-8 transmitted within the first time period T.

[0157] If the sequence detected by the terminal device from PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect PDCCH1-1 and the PDCCH2-1 and PDCCH2-2 transmitted within the first time period T, that is, the terminal device does not detect the search space of PDCCH1-1, PDCCH2-1 and the search space of PDCCH2-2.

[0158] If the sequence detected by the terminal device from the PDCCH 1-2 corresponds to the terminal device, and the data or DCI belonging to the terminal device is detected from the payload of the PDCCH 1-2, the terminal device does not detect the PDCCH 2-4 and the PDCCH 2-5 transmitted in the first time period T, that is, the terminal device does not detect the search space of the PDCCH 2-4 and the search space of the PDCCH 2-5.

[0159] If the sequence detected by the terminal device from the PDCCH 1-3 corresponds to the terminal device, and the data or DCI belonging to the terminal device is not detected from the payload of the PDCCH 1-3, the terminal device only detects the PDCCH 2-7 and the PDCCH 2-8 transmitted in the first time period T, that is, the terminal device only detects the search space of the PDCCH 2-7 and the search space of the PDCCH 2-8.

[0160] It should be noted that the first time period can be configured by high layer signaling or indicated by the PDCCH based on sequence detection. In addition, in the embodiments of the present application, the lengths of the first time periods associated with different PDCCHs based on sequence detection can be the same or different. For example, the length of the first time period associated with the PDCCH 1-1, the length of the first time period associated with the PDCCH 1-2, and the length of the first time period associated with the PDCCH 1-3 are all different. For another example, the length of the first time period associated with the PDCCH 1-1, the length of the first time period associated with the PDCCH 1-2, and the length of the first time period associated with the PDCCH 1-3 are all the same.

[0161] It is assumed that the PDCCH based on sequence detection is transmitted periodically, and the PDCCH based on blind detection associated with each PDCCH based on sequence detection is the PDCCH based on blind detection transmitted in the first time slot corresponding to the PDCCH based on sequence detection, that is, the first time is determined according to the search space of the PDCCH based on blind detection transmitted in the first time slot. Referring to FIG. 13, the PDCCH based on sequence detection is PDCCH 1-1, PDCCH 1-2, PDCCH 1-3, and PDCCH 1-4 respectively, and correspondingly, the PDCCH based on blind detection associated with the PDCCH 1-1 is the PDCCH 2-1 and the PDCCH 2-2 transmitted in the first time slot. The PDCCH based on blind detection associated with the PDCCH 1-2 is the PDCCH 2-4 and the PDCCH 2-5 transmitted in the first time slot. The PDCCH based on blind detection associated with the PDCCH 1-3 is the PDCCH 2-7 and the PDCCH 2-8 transmitted in the first time slot.

[0162] If the sequence detected by the terminal device from the PDCCH1-1 does not correspond to the terminal device, the terminal device does not detect the PDCCH1-1 and the PDCCH2-1 and the PDCCH2-2 transmitted in the first time slot, that is, the terminal device does not detect the search space of the PDCCH1-1, the PDCCH2-1 and the search space of the PDCCH2-2.

[0163] If the sequence detected by the terminal device from the PDCCH1-2 corresponds to the terminal device, and the data or DCI belonging to the terminal device is detected from the payload of the PDCCH1-2, the terminal device does not detect the PDCCH2-4 and the PDCCH2-5 transmitted in the first time slot, that is, the terminal device does not detect the search space of the PDCCH2-4 and the search space of the PDCCH2-5.

[0164] If the sequence detected by the terminal device from the PDCCH1-3 corresponds to the terminal device, and the data or DCI belonging to the terminal device is not detected from the payload of the PDCCH1-3, the terminal device only detects the PDCCH2-7 and the PDCCH2-8 transmitted in the first time slot, that is, the terminal device only detects the search space of the PDCCH2-7 and the search space of the PDCCH2-8.

[0165] The above describes the scheme for determining the second PDCCH in the embodiments of the application in combination with Examples 1-3. The following describes the scheme for determining the time domain position of the first PDCCH and the time domain position of the third PDCCH in the embodiments of the application.

[0166] In some implementations, the above method further includes: the network device sends second configuration information to the terminal device, the second configuration information being used for configuring the time domain position of the PDCCH based on sequence detection.

[0167] In some implementations, the second configuration information is used for configuring one or more of the following: the period of the PDCCH based on sequence detection; the time domain position of the PDCCH based on sequence detection in the period; the number of time domain resources corresponding to the PDCCH based on sequence detection; the format of the DCI carried in the PDCCH based on sequence detection.

[0168] For example, the second configuration information is used for configuring the period of the PDCCH based on sequence detection, which can be a time slot level period, that is, the length of the period is represented by the number of time slots N contained in the period, where N is a positive integer greater than or equal to 1. Of course, in the embodiments of the application, the length of the period can be represented by the number of symbols contained in the period, that is, the period is a symbol level period.

[0169] For example, the second configuration information is used to configure the time domain position of the PDCCH based on sequence detection in a period, which can be a time slot level time domain position and / or a symbol level time domain position. The time slot level time domain position can be understood as the time domain offset between the reference time slot of the period and the time slot containing the PDCCH based on sequence detection, where the reference time slot can be the first time slot or the last time slot in the period. Accordingly, the symbol level time domain position can be understood as the time domain offset between the reference symbol of the period and the symbol containing the PDCCH based on sequence detection, where the reference symbol can be the first symbol or the last symbol in the period.

[0170] For example, the second configuration information is used to configure the number of time domain resources corresponding to the PDCCH based on sequence detection, or in other words, the second configuration information is used to configure the time domain length corresponding to the PDCCH based on sequence detection. For example, the second configuration information is used to configure the number of symbols contained by the PDCCH based on sequence detection.

[0171] For example, the second configuration information is used to configure the format of the DCI carried in the PDCCH based on sequence detection, or in other words, the second configuration information is used to configure the format of the DCI that can be detected from the payload of the PDCCH based on sequence detection.

[0172] In some implementations, the format of the DCI that can be detected from the payload of the PDCCH based on sequence detection can include one or more of the following.

[0173] In some implementations, the second configuration information is associated with a bandwidth part (BWP) in which the terminal device is located, or the second configuration information is associated with a carrier in which the terminal device is located. Of course, in the embodiments of the present application, the second configuration information can also be general configuration information.

[0174] For example, the second configuration information is associated with a bandwidth part (BWP) in which the terminal device is located, which can be understood as configuring the time domain position of the PDCCH based on sequence detection for different BWPs.

[0175] For example, the second configuration information is associated with a carrier in which the terminal device is located, which can be understood as configuring the time domain position of the PDCCH based on sequence detection for different carriers.

[0176] In some implementations, the above method further includes: the network device sends third configuration information to the terminal device, the third configuration information being used to configure the time domain position of the search space of the PDCCH based on blind detection.

[0177] In some implementations, the third configuration information is used to configure one or more of the following: a periodicity of the blind detection based PDCCH; a time domain location of a search space of the blind detection based PDCCH in the periodicity; a number of time domain resources of the search space of the blind detection based PDCCH; a format of DCI carried in the blind detection based PDCCH.

[0178] For example, the periodicity of the blind detection based PDCCH configured by the third configuration information can be a slot level periodicity, i.e., the length of the periodicity is represented by the number of slots N contained in the periodicity, where N is a positive integer greater than or equal to 1. Of course, in the embodiments of the present application, the length of the periodicity can be represented by the number of symbols contained in the periodicity, i.e., the periodicity is a symbol level periodicity.

[0179] For example, the time domain location of the search space of the blind detection based PDCCH configured by the third configuration information can be a slot level time domain location and / or a symbol level time domain location.

[0180] In some implementations, the slot level time domain location can be understood as a time domain offset between a reference slot of the periodicity and a slot corresponding to the search space of the blind detection based PDCCH, where the reference slot can be the first slot or the last slot in the periodicity.

[0181] In the embodiments of the present application, the slot corresponding to the search space is not limited. In some implementations, the slot corresponding to the search space can include the first slot corresponding to the search space. In other implementations, the slot corresponding to the search space can include the last slot corresponding to the search space. Of course, in the embodiments of the present application, the slot corresponding to the search space can include a certain slot corresponding to the search space.

[0182] In other implementations, the symbol level time domain location can be understood as a time domain offset between a reference symbol in the periodicity and a symbol corresponding to the search space of the blind detection based PDCCH, where the reference symbol can be the first symbol or the last symbol in the periodicity.

[0183] In the embodiments of the present application, the symbol corresponding to the search space is not limited. In some implementations, the symbol corresponding to the search space can include the first symbol corresponding to the search space. In other implementations, the symbol corresponding to the search space can include the last symbol corresponding to the search space. Of course, in the embodiments of the present application, the symbol corresponding to the search space can include a certain symbol corresponding to the search space.

[0184] For example, the third configuration information is used for configuring the number of time domain resources of the search space of the PDCCH based on blind detection, or in other words, the third configuration information is used for configuring the time domain length of the search space of the PDCCH based on blind detection. For example, the third configuration information is used for configuring the number of symbols contained by the search space of the PDCCH based on blind detection.

[0185] For example, the third configuration information is used for configuring the format of the DCI carried in the PDCCH based on blind detection, or in other words, the third configuration information is used for configuring the format of the DCI that can be detected from the payload of the PDCCH based on blind detection.

[0186] In some implementations, the format of the DCI that can be detected from the payload of the PDCCH based on blind detection can include one or more of the following.

[0187] In some implementations, the third configuration information is associated with a bandwidth part (BWP) in which the terminal device is located, or the third configuration information is associated with a carrier in which the terminal device is located. Of course, in the embodiments of the present application, the third configuration information can also be general configuration information.

[0188] For example, the third configuration information is associated with a bandwidth part (BWP) in which the terminal device is located, it can be understood that the time domain position of the PDCCH based on blind detection is configured for different BWPs.

[0189] For example, the third configuration information is associated with a carrier in which the terminal device is located, it can be understood that the time domain position of the PDCCH based on blind detection is configured for different carriers.

[0190] The method embodiments of the present application are described in detail above in combination with FIGS. 1 to 13, and the device embodiments of the present application are described in detail below in combination with FIGS. 14 to 16. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, and therefore, the parts not described in detail can be referred to the foregoing method embodiments.

[0191] FIG. 14 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1400 shown in FIG. 14 includes a processing unit 1410.

[0192] The processing unit 1410 is configured to detect a first physical downlink control channel (PDCCH) transmitted by a network device, wherein the first PDCCH is a PDCCH based on sequence detection.

[0193] The processing unit 1410 is further configured to detect or not detect a second PDCCH based on a detection result of the first PDCCH, wherein the second PDCCH is a PDCCH based on blind detection.

[0194] In some embodiments, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH does not correspond to the terminal device, the terminal device does not detect the second PDCCH.

[0195] In some embodiments, if the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH does not correspond to the terminal device, the terminal device detects the second PDCCH.

[0196] In some embodiments, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the terminal device does not detect the second PDCCH.

[0197] In some embodiments, the second PDCCH detected by the terminal device is determined based on a first time.

[0198] In some embodiments, the second PDCCH transmitted before the first time is the PDCCH detected by the terminal device.

[0199] In some embodiments, the first time is determined based on a time domain position of a third PDCCH, the third PDCCH is the PDCCH based on sequence detection, and the third PDCCH is later than the first PDCCH in the time domain.

[0200] In some embodiments, the third PDCCH is the PDCCH based on sequence detection that is adjacent to the first PDCCH in the time domain.

[0201] In some embodiments, the second PDCCH includes one or more PDCCHs, and the first time is determined based on a search space of the one or more PDCCHs.

[0202] In some embodiments, the second PDCCH is one PDCCH, and the second PDCCH is the first PDCCH based on blind detection after the first PDCCH in the time domain.

[0203] In some embodiments, the second PDCCH includes one or more PDCCHs located between the first PDCCH and a fourth PDCCH in the time domain, and the fourth PDCCH is the PDCCH based on sequence detection that is adjacent to the first PDCCH in the time domain.

[0204] In some embodiments, the search space corresponding to the one or more PDCCHs is determined based on a bitmap.

[0205] In some embodiments, the first time is determined based on a first time period.

[0206] In some embodiments, the first time period is configured by first configuration information, the first configuration information being associated with a bandwidth part (BWP) in which the terminal device is located, or the first configuration information being associated with a carrier in which the terminal device is located.

[0207] In some embodiments, the terminal device further includes a first receiving unit configured to receive second configuration information transmitted by the network device, the second configuration information being used to configure a time domain position of the PDCCH based on sequence detection.

[0208] In some embodiments, the second configuration information is used to configure one or more of the following: a period of the PDCCH based on sequence detection; a time domain position of the PDCCH based on sequence detection in the period; a number of time domain resources corresponding to the PDCCH based on sequence detection; a format of downlink control information (DCI) carried in the PDCCH based on sequence detection.

[0209] In some embodiments, the period of the PDCCH based on sequence detection is a slot-level period, and / or the time domain position of the PDCCH based on sequence detection in the period is a slot-level time domain position and / or a symbol-level time domain position.

[0210] In some embodiments, the second configuration information is associated with a BWP in which the terminal device is located, or the second configuration information is associated with a carrier in which the terminal device is located.

[0211] In some embodiments, the terminal device further includes a second receiving unit configured to receive third configuration information transmitted by the network device, the third configuration information being used to configure a time domain resource of the PDCCH based on blind detection.

[0212] In some embodiments, the third configuration information includes one or more of the following: a period of the PDCCH based on blind detection; a time domain position of the PDCCH based on blind detection in the period; a number of time domain resources corresponding to the PDCCH based on blind detection; a format of DCI carried in the PDCCH based on blind detection.

[0213] In some embodiments, the third configuration information is associated with a BWP in which the terminal device is located, or the third configuration information is associated with a carrier in which the terminal device is located.

[0214] In some embodiments, if the information carried in the first PDCCH corresponds to the terminal device, the information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device.

[0215] In some embodiments, the PDCCH based on sequence detection includes a first part and a second part, the first part is used to carry the sequence in the first PDCCH, and the second part is used to carry the information carried in the first PDCCH.

[0216] FIG. 15 is a schematic diagram of a network device according to an embodiment of the present application. The network device 1500 shown in FIG. 15 includes a sending unit 1510.

[0217] The sending unit 1510 is configured to send a first physical downlink control channel (PDCCH), and a detection result of the first PDCCH is used by the terminal device to determine whether to detect a second PDCCH, wherein the first PDCCH is a PDCCH based on sequence detection, and the second PDCCH is a PDCCH based on blind detection.

[0218] In some embodiments, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used by the terminal device to determine not to detect the second PDCCH.

[0219] In some embodiments, if the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used by the terminal device to determine to detect the second PDCCH.

[0220] In some embodiments, if the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the detection result of the first PDCCH is used by the terminal device to determine not to detect the second PDCCH.

[0221] In some embodiments, the second PDCCH detected by the terminal device is determined based on a first time.

[0222] In some embodiments, the second PDCCH transmitted before the first time is the PDCCH detected by the terminal device.

[0223] In some embodiments, the first time is determined based on a time domain position of a third PDCCH, the third PDCCH being the sequence detection based PDCCH, and the third PDCCH being later than the first PDCCH in time domain.

[0224] In some embodiments, the third PDCCH is a PDCCH adjacent to the first PDCCH in time domain among the sequence detection based PDCCHs.

[0225] In some embodiments, the second PDCCH includes one or more PDCCHs, and the first time is determined based on a search space of the one or more PDCCHs.

[0226] In some embodiments, the second PDCCH is one PDCCH, and the second PDCCH is the first blind detection based PDCCH after the first PDCCH in time domain.

[0227] In some embodiments, the second PDCCH includes one or more PDCCHs between the first PDCCH and a fourth PDCCH in time domain, the fourth PDCCH being a PDCCH adjacent to the first PDCCH in time domain among the sequence detection based PDCCHs.

[0228] In some embodiments, the search space corresponding to the one or more PDCCHs is determined based on a bitmap.

[0229] In some embodiments, the first time is determined based on a first time period.

[0230] In some embodiments, the first time period is configured by first configuration information, the first configuration information being associated with a bandwidth part (BWP) where the terminal device is located, or the first configuration information being associated with a carrier where the terminal device is located.

[0231] In some embodiments, the network device further includes a first sending unit configured to send second configuration information to the terminal device, the second configuration information being used to configure a time domain position of the sequence detection based PDCCH.

[0232] In some embodiments, the second configuration information is used to configure one or more of the following: a period of the sequence detection based PDCCH; a time domain position of the sequence detection based PDCCH in the period; a number of time domain resources corresponding to the sequence detection based PDCCH; a format of downlink control information (DCI) carried in the sequence detection based PDCCH.

[0233] In some embodiments, the periodicity of the sequence detection based PDCCH is a slot level periodicity; and / or the time domain location of the sequence detection based PDCCH in a period is a slot level time domain location and / or a symbol level time domain location.

[0234] In some embodiments, the second configuration information is associated with a BWP in which the terminal device is located, or the second configuration information is associated with a carrier in which the terminal device is located.

[0235] In some embodiments, the network device further includes a second sending unit configured to send third configuration information to the terminal device, the third configuration information being used to configure time domain resources of the blind detection based PDCCH.

[0236] In some embodiments, the third configuration information includes one or more of the following: a periodicity of the blind detection based PDCCH; a time domain location of the blind detection based PDCCH in a period; a number of time domain resources corresponding to the blind detection based PDCCH; a format of DCI carried in the blind detection based PDCCH.

[0237] In some embodiments, the third configuration information is associated with a BWP in which the terminal device is located, or the third configuration information is associated with a carrier in which the terminal device is located.

[0238] In some embodiments, if the information carried in the first PDCCH corresponds to the terminal device, the information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device.

[0239] In some embodiments, the sequence detection based PDCCH includes a first part and a second part, the first part being used to carry the sequence in the first PDCCH, and the second part being used to carry the information carried in the first PDCCH.

[0240] In optional embodiments, the processing unit 1410 can be a processor 1610. The terminal device 1400 can further include a transceiver 1630 and a memory 1620, as shown in FIG. 16.

[0241] In optional embodiments, the sending unit 1510 can be a transceiver 1630. The network device 1500 can further include a transceiver 1630 and a memory 1620, as shown in FIG. 16.

[0242] Fig. 16 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. The dashed line in Fig. 16 indicates that the unit or module is optional. The apparatus 1600 can be used to implement the method described in the above method embodiments. The apparatus 1600 can be a chip, a terminal device or a network device.

[0243] The apparatus 1600 can include one or more processors 1610. The processor 1610 can support the apparatus 1600 to implement the method described in the above method embodiments. The processor 1610 can be a general purpose processor or a dedicated processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0244] The apparatus 1600 can also include one or more memories 1620. The memory 1620 stores a program, which can be executed by the processor 1610, so that the processor 1610 performs the method described in the above method embodiments. The memory 1620 can be independent of the processor 1610 or integrated in the processor 1610.

[0245] The apparatus 1600 can also include a transceiver 1630. The processor 1610 can communicate with other devices or chips through the transceiver 1630. For example, the processor 1610 can perform data transceiving with other devices or chips through the transceiver 1630.

[0246] The embodiments of the present application also provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal or network device in the various embodiments of the present application.

[0247] The embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal or network device in the various embodiments of the present application.

[0248] The embodiments of the present application further provide a computer program. The computer program can be applied to the terminal or the network device provided by the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or the network device in the embodiments of the present application.

[0249] It should be understood that the terms "system" and "network" can be used interchangeably in the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0250] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0251] In the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0252] In the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, and the like.

[0253] In the embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other information that can be used to indicate related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner. For example, predefinition can mean definition in a protocol.

[0254] In the embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol, and a related protocol applied to a future communication system, and the present application does not limit this.

[0255] The term "and / or" used in the embodiments of the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0256] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0257] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0258] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0259] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0260] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0261] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising: The method comprises: A terminal device detects a first physical downlink control channel (PDCCH) sent by a network device, the first PDCCH being a PDCCH based on sequence detection; The terminal device detects or does not detect a second PDCCH based on a detection result of the first PDCCH, the second PDCCH being a PDCCH based on blind detection.

2. The method of claim 1, wherein, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH does not correspond to the terminal device, the terminal device does not detect the second PDCCH.

3. The method of claim 1 or 2, wherein, If the detection result of a sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and information carried in the first PDCCH does not correspond to the terminal device, the terminal device detects the second PDCCH.

4. The method according to any one of claims 1 to 3, characterized in that, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the terminal device does not detect the second PDCCH.

5. The method of any one of claims 1-4, wherein, The second PDCCH detected by the terminal device is determined based on a first time.

6. The method of claim 5, wherein, The second PDCCH transmitted before the first time is the PDCCH detected by the terminal device.

7. The method of claim 5 or 6, wherein, The first time is determined based on a time domain position of a third PDCCH, the third PDCCH being the PDCCH based on sequence detection, and the third PDCCH being later than the first PDCCH in the time domain.

8. The method of claim 7, wherein, The third PDCCH is a PDCCH adjacent to the first PDCCH in the time domain among the PDCCHs based on sequence detection.

9. The method of claim 5 or 6, wherein, The second PDCCH comprises one or more PDCCHs, and the first time is determined based on a search space of the one or more PDCCHs.

10. The method of claim 9, wherein, The second PDCCH is one PDCCH, and the second PDCCH is the first PDCCH based on blind detection after the first PDCCH in the time domain.

11. The method of claim 9, wherein, The second PDCCH comprises the one or more PDCCHs located between the first PDCCH and a fourth PDCCH in the time domain, the fourth PDCCH being a PDCCH adjacent to the first PDCCH in the time domain among the PDCCHs based on sequence detection.

12. The method of claim 11, wherein, The search space corresponding to the one or more PDCCHs is determined based on a bitmap.

13. The method of claim 5 or 6, wherein, The first time is determined based on a first time period.

14. The method of claim 13, wherein, The first time period is configured by first configuration information, the first configuration information being associated with a bandwidth part (BWP) in which the terminal device is located, or The first configuration information is associated with a carrier in which the terminal device is located.

15. The method of any one of claims 1-14, wherein, The method further comprises: The terminal device receives second configuration information sent by the network device, the second configuration information being used to configure a time domain position of the PDCCH based on sequence detection.

16. The method of claim 15, wherein, The second configuration information is used to configure one or more of the following: A period of the PDCCH based on sequence detection; A time domain position of the PDCCH based on sequence detection in a period; A quantity of time domain resources corresponding to the PDCCH based on sequence detection; A format of downlink control information (DCI) carried in the PDCCH based on sequence detection.

17. The method of claim 16, wherein, The period of the PDCCH based on sequence detection is a slot-level period; and / or The time domain position of the PDCCH based on sequence detection in a period is a slot-level time domain position and / or a symbol-level time domain position.

18. The method of any one of claims 15-17, wherein, The second configuration information is associated with a BWP in which the terminal device is located, or The second configuration information is associated with a carrier in which the terminal device is located.

19. The method of any one of claims 1-16, wherein, The method further includes: The terminal device receives third configuration information sent by the network device, the third configuration information being used for configuring time domain resources of the PDCCH based on blind detection.

20. The method of claim 19, wherein, The third configuration information includes one or more of the following: A period of the PDCCH based on blind detection; A time domain position of the PDCCH based on blind detection in a period; A quantity of time domain resources corresponding to the PDCCH based on blind detection; A format of DCI carried in the PDCCH based on blind detection.

21. The method of claim 19 or 20, wherein, The third configuration information is associated with a BWP in which the terminal device is located, or The third configuration information is associated with a carrier in which the terminal device is located.

22. The method of any one of claims 1-21, wherein, If the information carried in the first PDCCH corresponds to the terminal device, the information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device.

23. The method of any one of claims 1-22, wherein, The PDCCH based on sequence detection includes a first part and a second part, the first part being used for carrying a sequence in the first PDCCH, and the second part being used for carrying information carried in the first PDCCH.

24. A method of wireless communication, the method comprising: It includes: A network device sends a first physical downlink control channel (PDCCH), and a detection result of the first PDCCH is used for a terminal device to determine whether to detect a second PDCCH, The first PDCCH is a PDCCH based on sequence detection, and the second PDCCH is a PDCCH based on blind detection.

25. The method of claim 24, wherein, If the detection result of the first PDCCH indicates that a sequence of the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used for the terminal device to determine not to detect the second PDCCH.

26. The method of claim 24 or 25, wherein, If the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and information carried in the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used for the terminal device to determine to detect the second PDCCH.

27. The method of any one of claims 24-26, wherein, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the detection result of the first PDCCH is used for the terminal device to determine not to detect the second PDCCH.

28. The method of any one of claims 24-27, wherein, The second PDCCH detected by the terminal device is determined based on a first time.

29. The method of claim 28, wherein, The second PDCCH transmitted before the first time is a PDCCH detected by the terminal device.

30. The method of claim 28 or 29, wherein, The first time is determined based on a time domain position of a third PDCCH, the third PDCCH being the PDCCH based on sequence detection, and the third PDCCH being later than the first PDCCH in the time domain.

31. The method of claim 30, wherein, The third PDCCH is a PDCCH adjacent to the first PDCCH in the PDCCHs based on sequence detection in the time domain.

32. The method of claim 28 or 29, wherein, The second PDCCH includes one or more PDCCHs, and the first time is determined based on a search space of the one or more PDCCHs.

33. The method of claim 32, wherein, The second PDCCH is one PDCCH, and the second PDCCH is the first PDCCH based on blind detection after the first PDCCH in the time domain.

34. The method of claim 32, wherein, The second PDCCH includes one or more PDCCHs located between the first PDCCH and a fourth PDCCH in the time domain, the fourth PDCCH being a PDCCH adjacent to the first PDCCH in the PDCCHs based on sequence detection in the time domain.

35. The method of claim 34, wherein, The search space corresponding to the one or more PDCCHs is determined based on a bitmap.

36. The method of claim 28 or 29, wherein, The first time is determined based on a first time period.

37. The method of claim 36, wherein, The first time period is configured by first configuration information, the first configuration information being associated with a bandwidth part (BWP) in which the terminal device is located, or The first configuration information is associated with a carrier in which the terminal device is located.

38. The method of any one of claims 24-37, wherein, The method further includes: The network device sends second configuration information to the terminal device, the second configuration information being used to configure a time domain position of the PDCCH based on sequence detection.

39. The method of claim 38, wherein, The second configuration information is used to configure one or more of the following: A period of the PDCCH based on sequence detection; A time domain position of the PDCCH based on sequence detection in a period; A number of time domain resources corresponding to the PDCCH based on sequence detection; A format of downlink control information (DCI) carried in the PDCCH based on sequence detection.

40. The method of claim 39, wherein, The period of the PDCCH based on sequence detection is a slot-level period; and / or The time domain position of the PDCCH based on sequence detection in a period is a slot-level time domain position and / or a symbol-level time domain position.

41. The method of any one of claims 38-40, wherein, The second configuration information is associated with a BWP in which the terminal device is located, or The second configuration information is associated with a carrier in which the terminal device is located.

42. The method of any one of claims 24-41, wherein, The method further includes: The network device sends third configuration information to the terminal device, the third configuration information being used to configure a time domain resource of the PDCCH based on blind detection.

43. The method of claim 42, wherein, The third configuration information includes one or more of the following: A period of the PDCCH based on blind detection; A time domain position of the PDCCH based on blind detection in a period; A number of time domain resources corresponding to the PDCCH based on blind detection; A format of DCI carried in the PDCCH based on blind detection.

44. The method of claim 42 or 43, wherein, The third configuration information is associated with a BWP in which the terminal device is located, or The third configuration information is associated with a carrier in which the terminal device is located.

45. The method of any one of claims 24-44, wherein, The information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device, if the information carried in the first PDCCH corresponds to the terminal device.

46. The method of any one of claims 24-45, wherein, The PDCCH based on sequence detection includes a first part and a second part, the first part is used to carry the sequence in the first PDCCH, and the second part is used to carry the information carried in the first PDCCH.

47. A terminal device, comprising: Comprise: A processing unit is configured to detect a first physical downlink control channel (PDCCH) transmitted by a network device, wherein the first PDCCH is a PDCCH based on sequence detection; The processing unit is further configured to detect or not detect a second PDCCH based on the detection result of the first PDCCH, wherein the second PDCCH is a PDCCH based on blind detection.

48. The terminal device of claim 47, wherein, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH does not correspond to the terminal device, the terminal device does not detect the second PDCCH.

49. The terminal device according to claim 47 or 48, characterized by If the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH does not correspond to the terminal device, the terminal device detects the second PDCCH.

50. The terminal device of any one of claims 47-49, wherein, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH corresponds to the terminal device, the terminal device does not detect the second PDCCH.

51. The terminal device of any one of claims 47-50, wherein, The second PDCCH detected by the terminal device is determined based on a first time.

52. The terminal device of claim 51, wherein, The second PDCCH transmitted before the first time is the PDCCH detected by the terminal device.

53. The terminal device according to claim 51 or 52, characterized by The first time is determined based on the time domain position of a third PDCCH, wherein the third PDCCH is the PDCCH based on sequence detection, and the third PDCCH is later than the first PDCCH in the time domain.

54. The terminal device of claim 53, wherein, The third PDCCH is the PDCCH adjacent to the first PDCCH in the PDCCH based on sequence detection.

55. The terminal device according to claim 51 or 52, characterized by The second PDCCH includes one or more PDCCHs, and the first time is determined based on the search space of the one or more PDCCHs.

56. The terminal device of claim 55, wherein, The second PDCCH is one PDCCH, and the second PDCCH is the first PDCCH based on blind detection after the first PDCCH in the time domain.

57. The terminal device of claim 55, wherein, The second PDCCH includes the one or more PDCCHs located between the first PDCCH and a fourth PDCCH in the time domain, wherein the fourth PDCCH is the PDCCH adjacent to the first PDCCH in the PDCCH based on sequence detection.

58. The terminal device of claim 57, wherein, The search space corresponding to the one or more PDCCHs is determined based on a bitmap.

59. The terminal device according to claim 51 or 52, characterized by The first time is determined based on a first time period.

60. The terminal device of claim 59, wherein, The first time period is configured by first configuration information, and the first configuration information is associated with a bandwidth part (BWP) in which the terminal device is located, or The first configuration information is associated with a carrier where the terminal device is located.

61. The terminal device of any one of claims 47-60, wherein, The terminal device further includes: a first receiving unit, configured to receive second configuration information sent by the network device, the second configuration information being used for configuring a time domain position of the PDCCH based on sequence detection.

62. The terminal device of claim 61, wherein, The second configuration information is used for configuring one or more of the following: a period of the PDCCH based on sequence detection; a time domain position of the PDCCH based on sequence detection in a period; a number of time domain resources corresponding to the PDCCH based on sequence detection; a format of downlink control information (DCI) carried in the PDCCH based on sequence detection.

63. The terminal device of claim 62, wherein, The period of the PDCCH based on sequence detection is a slot-level period; and / or The time domain position of the PDCCH based on sequence detection in a period is a slot-level time domain position and / or a symbol-level time domain position.

64. The terminal device of any one of claims 61-63, wherein, The second configuration information is associated with a BWP where the terminal device is located, or The second configuration information is associated with a carrier where the terminal device is located.

65. The terminal device of any one of claims 47-64, wherein, The terminal device further includes: a second receiving unit, configured to receive third configuration information sent by the network device, the third configuration information being used for configuring a time domain resource of the PDCCH based on blind detection.

66. The terminal device of claim 65, wherein, The third configuration information includes one or more of the following: a period of the PDCCH based on blind detection; a time domain position of the PDCCH based on blind detection in a period; a number of time domain resources corresponding to the PDCCH based on blind detection; a format of DCI carried in the PDCCH based on blind detection.

67. The terminal device according to claim 65 or 66, characterized by The third configuration information is associated with a BWP where the terminal device is located, or The third configuration information is associated with a carrier where the terminal device is located.

68. The terminal device of any one of claims 47-67, wherein, If the information carried in the first PDCCH corresponds to the terminal device, the information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device.

69. The terminal device of any one of claims 47-68, wherein, The PDCCH based on sequence detection includes a first part and a second part, the first part is used to carry a sequence in the first PDCCH, and the second part is used to carry information carried in the first PDCCH.

70. A network device, comprising: includes: a sending unit, configured to send a first physical downlink control channel (PDCCH), a detection result of the first PDCCH being used for a terminal device to determine whether to detect a second PDCCH, wherein the first PDCCH is a PDCCH based on sequence detection, and the second PDCCH is a PDCCH based on blind detection.

71. The network device of claim 70, wherein, If the detection result of the first PDCCH indicates that a sequence of the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used for the terminal device to determine not to detect the second PDCCH.

72. The network device of claim 70 or 71, wherein, If the detection result of the sequence part of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device, and the information carried in the first PDCCH does not correspond to the terminal device, the detection result of the first PDCCH is used for the terminal device to determine to detect the second PDCCH.

73. The network device of any of claims 70-72, wherein, If the detection result of the first PDCCH indicates that the sequence of the first PDCCH corresponds to the terminal device and the information carried in the first PDCCH corresponds to the terminal device, the detection result of the first PDCCH is used by the terminal device to determine not to detect the second PDCCH.

74. The network device of any of claims 70-73, wherein, The second PDCCH detected by the terminal device is determined based on a first time.

75. The network device of claim 74, wherein, The second PDCCH transmitted before the first time is a PDCCH detected by the terminal device.

76. The network device of claim 74 or 75, wherein, The first time is determined based on a time domain position of a third PDCCH, the third PDCCH being the PDCCH based on sequence detection, and the third PDCCH being later than the first PDCCH in the time domain.

77. The network device of claim 76, wherein, The third PDCCH is a PDCCH adjacent to the first PDCCH in the time domain among the PDCCHs based on sequence detection.

78. The network device of claim 74 or 75, wherein, The second PDCCH includes one or more PDCCHs, and the first time is determined based on a search space of the one or more PDCCHs.

79. The network device of claim 78, wherein, The second PDCCH is one PDCCH, and the second PDCCH is the first PDCCH based on blind detection after the first PDCCH in the time domain.

80. The network device of claim 78, wherein, The second PDCCH includes one or more PDCCHs located between the first PDCCH and a fourth PDCCH in the time domain, the fourth PDCCH being a PDCCH adjacent to the first PDCCH in the time domain among the PDCCHs based on sequence detection.

81. The network device of claim 80, wherein, The search space corresponding to the one or more PDCCHs is determined based on a bitmap.

82. The network device of claim 74 or 75, wherein, The first time is determined based on a first time period.

83. The network device of claim 82, wherein, The first time period is configured by first configuration information, the first configuration information being associated with a bandwidth part (BWP) in which the terminal device is located, or The first configuration information is associated with a carrier in which the terminal device is located.

84. The network device of any of claims 70-83, wherein, The network device further includes: A first sending unit configured to send second configuration information to the terminal device, the second configuration information being used to configure a time domain position of the PDCCH based on sequence detection.

85. The network device of claim 84, wherein, The second configuration information is used to configure one or more of the following: A period of the PDCCH based on sequence detection; A time domain position of the PDCCH based on sequence detection in a period; A number of time domain resources corresponding to the PDCCH based on sequence detection; A format of downlink control information (DCI) carried in the PDCCH based on sequence detection.

86. The network device of claim 85, wherein, The period of the PDCCH based on sequence detection is a slot-level period; and / or The time domain position of the PDCCH based on sequence detection in a period is a slot-level time domain position and / or a symbol-level time domain position.

87. The network device of any of claims 84-86, wherein, The second configuration information is associated with a BWP in which the terminal device is located, or The second configuration information is associated with a carrier in which the terminal device is located.

88. The network device of any of claims 70-87, wherein, The network device further includes: A second sending unit configured to send third configuration information to the terminal device, the third configuration information being used to configure a time domain resource of the PDCCH based on blind detection.

89. The network device of claim 88, wherein, The third configuration information includes one or more of the following: a periodicity of the blind detection based PDCCH; a time domain location of the blind detection based PDCCH in the periodicity; a number of time domain resources corresponding to the blind detection based PDCCH; a format of DCI carried in the blind detection based PDCCH.

90. The network device of claim 88 or 89, wherein, the third configuration information is associated with a BWP in which the terminal device is located, or the third configuration information is associated with a carrier in which the terminal device is located.

91. The network device of any of claims 70-90, wherein, if the information carried in the first PDCCH corresponds to the terminal device, the information carried in the first PDCCH includes DCI corresponding to the terminal device and / or downlink data corresponding to the terminal device.

92. The network device of any of claims 70-91, wherein, the sequence detection based PDCCH includes a first part and a second part, the first part is used to carry a sequence in the first PDCCH, and the second part is used to carry information carried in the first PDCCH.

93. A terminal device, comprising: comprising a transceiver, a memory and a processor, the memory is used to store a program, the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the terminal device executes the method in any one of claims 1-23.

94. A network device, comprising: comprising a transceiver, a memory and a processor, the memory is used to store a program, the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the network device executes the method in any one of claims 24-46.

95. An apparatus comprising: comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46.

96. A chip, comprising: comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46.

97. A computer-readable storage medium, characterized in that, comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46.

98. A computer program product, characterized in that, comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46.

99. A computer program, characterized in that, comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46. comprising a processor, used to call a program from a memory, so that the apparatus executes the method in any one of claims 1-46.

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