Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A wireless communication method comprises: a terminal device determining types of PDCCHs to be monitored; and, on the basis of the types of PDCCHs to be monitored, the terminal device monitoring PDCCHs sent by a network device, wherein the types of PDCCHs to be monitored by the terminal device comprise one or more of the following: a PDCCH based on sequence detection and a PDCCH based on blind detection.

Description

Wireless communication methods, terminal devices, and network devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] To achieve energy conservation in terminal devices, some communication systems (such as 6G systems) may introduce a physical downlink control channel (PDCCH) based on sequence detection. However, the spectral efficiency of sequence detection-based PDCCH is lower than that of blind detection-based PDCCH. Therefore, to balance the power consumption of terminal devices in detecting PDCCH and the spectral efficiency of PDCCH, communication systems can be compatible with both types of PDCCH. In this case, how terminal devices listen to PDCCH and / or how network devices transmit PDCCH becomes a crucial problem to solve.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided, comprising: a terminal device determining the type of PDCCH to be monitored; the terminal device monitoring PDCCH sent by a network device based on the determined type of PDCCH to be monitored; wherein the type of PDCCH monitored by the terminal device includes one or more of the following: sequence detection-based PDCCH, blind detection-based PDCCH.

[0006] In a second aspect, a wireless communication method is provided, comprising: a network device determining the type of a PDCCH to be transmitted; the network device transmitting a PDCCH to a terminal device based on the determined type of the transmitted PDCCH; wherein the type of the PDCCH transmitted by the network device includes one or more of the following: sequence detection-based PDCCH, blind detection-based PDCCH.

[0007] Thirdly, a terminal device is provided, comprising: a determining module for determining the type of PDCCH being monitored; and a first monitoring module for monitoring PDCCH sent by a network device based on the determined type of the monitored PDCCH; wherein the type of PDCCH monitored by the terminal device includes one or more of the following: sequence-based PDCCH, and blind-based PDCCH.

[0008] Fourthly, a network device is provided, comprising: a determining module for determining the type of PDCCH to be transmitted; and a first transmitting module for transmitting PDCCH to a terminal device based on the determined type of PDCCH to be transmitted; wherein the type of PDCCH transmitted by the network device includes one or more of the following: sequence detection-based PDCCH, and blind detection-based PDCCH.

[0009] Fifthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used 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, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used 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] Seventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0012] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps in the methods described above.

[0013] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0014] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0015] In this embodiment, when a terminal device needs to listen to multiple types of PDCCH, the terminal device can first determine the type of PDCCH to listen to (or need to listen to), and then listen to the PDCCH sent by the network device based on the determination result. Correspondingly, when a network device needs to send multiple types of PDCCH, the network device can first determine the type of PDCCH to send (or need to send), and then send the PDCCH to the terminal device based on the determination result. This helps ensure that the terminal device clearly knows the type of PDCCH to listen to and the network device clearly knows the type of PDCCH to send. Attached Figure Description

[0016] Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.

[0017] Figure 2 is an example diagram of the signal transmission process in a wireless communication system to which embodiments of this application are applicable.

[0018] Figure 3 is a schematic diagram of the structure of the resource particle group in the PDCCH applicable to the embodiments of this application.

[0019] Figure 4A is a schematic diagram of the structure of a control channel particle in a PDCCH applicable to an embodiment of this application.

[0020] Figure 4B is a schematic diagram of the structure of a control channel particle in another PDCCH applicable to the embodiments of this application.

[0021] Figure 4C is a schematic diagram of the structure of a control channel particle in another PDCCH applicable to the embodiments of this application.

[0022] Figure 5 is a schematic diagram of the structure of the PDCCH applicable to the embodiments of this application.

[0023] Figure 6 is a flowchart illustrating the wireless communication method provided in an embodiment of this application.

[0024] Figure 7 is an example diagram of a first information monitoring PDCCH provided in an embodiment of this application.

[0025] Figure 8 is an example diagram of a first information monitoring PDCCH provided in another embodiment of this application.

[0026] Figure 9 is an example diagram of a first information monitoring PDCCH provided in another embodiment of this application.

[0027] Figure 10 is an example diagram of a first information monitoring PDCCH provided in another embodiment of this application.

[0028] Figure 11 is an example diagram of a first information monitoring PDCCH provided in another embodiment of this application.

[0029] Figure 12 is a schematic diagram of the structure of the terminal device provided in the embodiment of this application.

[0030] Figure 13 is a schematic diagram of the network device provided in an embodiment of this application.

[0031] Figure 14 is a schematic structural diagram of the communication device provided in an embodiment of this application. Detailed Implementation

[0032] The technical solutions in this application will now be described with reference to the accompanying drawings. To facilitate understanding of this application, the communication system and communication process applicable to the embodiments of this application will be introduced below with reference to Figures 1 to 4.

[0033] Communication system architecture

[0034] Figure 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0035] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0036] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0037] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0038] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0039] The network device in this application embodiment can be a device for communicating with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode 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. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0040] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0041] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0042] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0043] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0044] Signal transmission process in a wireless communication system

[0045] Figure 2 is an example diagram of the signal transmission process in a wireless communication system to which this application embodiment applies. As shown in Figure 2, the signal transmission process in a wireless communication system can be broadly divided into various signal processing processes as shown in Figure 2.

[0046] At the transmitting end, the transmitter can perform channel coding on the information to be transmitted during the channel coding process to obtain the encoded code stream. The information to be transmitted can be in the form of a bit stream. Then, the transmitter can modulate the code stream into modulation symbols during the modulation process. During pilot insertion, the transmitter can insert pilot symbols into the modulation symbols to form the signal to be transmitted. The pilot symbols can be used by the receiver for channel estimation and symbol detection. The signal to be transmitted can be carried in the channel and arrive at the receiving end. In some embodiments, noise may be superimposed on the signal to be transmitted during transmission through the channel.

[0047] At the receiving end, the receiver first uses pilot symbols to perform channel estimation, obtaining channel state information (CSI). This CSI is then fed back to the transmitter via a feedback link, allowing the transmitter to adjust channel coding, modulation, precoding, and other methods. Afterward, the receiver can perform symbol detection, demodulation, and channel decoding. During symbol detection, the receiver performs symbol detection on the received modulated symbols, obtaining the detection results. During demodulation, the receiver demodulates the received modulated symbols based on the detection results, obtaining the bitstream. During channel decoding, the receiver decodes the bitstream to obtain the recovered information, which can be in the form of a bitstream.

[0048] It should be understood that the signal processing procedures shown in Figure 2 are merely illustrative examples of common signal processing procedures in wireless communication systems. Wireless communication systems may also include signal processing procedures such as resource mapping, precoding, interference cancellation, and CSI measurement. These signal processing procedures can be designed and implemented independently, for example, through separate artificial intelligence (AI) models. These individual modules can then be integrated to form a complete wireless communication system. For the sake of brevity, this application will not elaborate further.

[0049] PDCCH resource configuration

[0050] In some communication systems (e.g., 5G NR), the PDCCH is periodically transmitted in the time domain. Each PDCCH may contain downlink control information (DCI) for multiple terminal devices within the cell. Therefore, terminal devices need to perform blind detection on PDCCHs that may contain DCIs related to themselves, at the time domain locations configured by the network equipment, in order to find their own associated DCIs. In this case, even if the network equipment does not transmit a DCI related to a terminal device in a certain PDCCH, the terminal device must still perform blind detection on that PDCCH. Although this PDCCH detection method achieves high multiplexing of DCIs for all terminal devices in the cell, it requires a large number of unnecessary blind detections for the terminal devices, resulting in high power consumption for PDCCH detection.

[0051] The structure of the PDCCH is described below with reference to Figures 3 to 5. In some implementations, the basic building block of the PDCCH is a resource element group (REG). Referring to Figure 3, the REG occupies one symbol in the time domain and 12 subcarriers in the frequency domain. The REG contains 12 resource elements (REs), including 3 REs for orthogonal reference signal (RS) transmission and 9 REs for data transmission.

[0052] In some implementations, six REGs can constitute a control channel element (CCE). The following section describes three possible structures of the CCE with reference to Figures 4A to 4C.

[0053] As shown in Figure 4A, for a control resource set (CORESET) of 3 symbols, the CCE in the CORESET includes 6 REGs. The 6 REGs occupy 3 symbols in the time domain and 24 subcarriers in the frequency domain. That is to say, the 6 REGs are arranged in 3 rows in the time domain and 2 columns in the frequency domain.

[0054] As shown in Figure 4B, for a 2-symbol CORESET, the CCE in the CORESET includes 6 REGs. These 6 REGs occupy 2 symbols in the time domain and 36 subcarriers in the frequency domain. That is to say, the 6 REGs are arranged in 2 rows in the time domain and 3 columns in the frequency domain.

[0055] As shown in Figure 4C, for a CORESET of one symbol length, the CCE in the CORESET includes 6 REGs. The 6 REGs occupy 1 symbol in the time domain and 36 subcarriers in the frequency domain. That is to say, the 6 REGs are arranged in one row in the time domain and 6 columns in the frequency domain.

[0056] In some implementations, a PDCCH consists of N (N = 1, 2, 4, 8, or 16) identical CCEs arranged in the frequency domain. Taking a 3-symbol CORESET as an example, the structure of a PDCCH is shown in Figure 5. The aforementioned N can be called the aggregation level. Generally, the larger N is, the more times the CCEs are repeated, and the better the PDCCH transmission performance, but the more time-frequency resources are consumed in transmitting the PDCCH.

[0057] In some communication systems (e.g., 5G systems), the PDCCH channel is used only for transmitting DCI, while downlink data is transmitted through the physical downlink shared channel (PDSCH), where DCI is used to schedule the time and frequency resources used by PDSCH.

[0058] In some communication systems (e.g., 5G systems), control channels typically use Polar coding. For example, the PDCCH and physical uplink control channel (PUCCH) can use Polar coding. Data channels use low-density parity codes (LDPC) coding. For example, the PDSCH and physical uplink shared channel (PUSCH) can use LDPC coding.

[0059] In some scenarios, the PDCCH that requires blind detection by the terminal device can also be called "blind detection-based PDCCH", "detection-based PDCCH (monitoring-based PDCCH)", or "PDCCH based on PDCCH candidate detection".

[0060] As mentioned above, blind detection-based PDCCH can multiplex scheduling information (DCI) of a large number of terminal devices into a single PDCCH, which helps improve PDCCH spectrum utilization and the scheduling efficiency of the communication system. However, at the cost of this, the terminal device needs to receive the DCI via blind detection PDCCH and then receive the PDSCH based on the scheduling information in the DCI. Even if the network device does not send a certain terminal device's DCI in the PDCCH, the terminal device still needs to periodically search for the DCI in the PDCCH, resulting in high power consumption of the terminal device. In other words, blind detection PDCCH is one of the main causes of power consumption of terminal devices.

[0061] Accordingly, to reduce the energy consumed by the terminal device in blind detection, this application proposes a PDCCH based on sequence detection. For this type of PDCCH, the detection result of the sequence is used to indicate whether the terminal device needs to receive the PDCCH following the sequence and / or to indicate whether the terminal device needs to receive the PDSCH associated with the PDCCH. In other words, the detection result of the sequence can be used to indicate whether the PDCCH contains information corresponding to the terminal device (such as DCI and / or data) and / or to indicate whether the PDSCH associated with the PDCCH contains data corresponding to the terminal device. That is, the sequence can be used by the terminal device to determine whether there is scheduling information (such as DCI and / or data) for the terminal device following the sequence.

[0062] As one implementation, the terminal device first detects the PDCCH based on sequence detection. If the sequence corresponding to the terminal device is detected, it means that the PDCCH contains information corresponding to the terminal device and / or the PDSCH associated with the PDCCH contains data of the terminal device. Therefore, the terminal device can directly receive the PDCCH (or, in other words, receive the PDCCH following the sequence). Conversely, if the terminal device does not detect the sequence corresponding to the terminal device, it means that the PDCCH does not contain information corresponding to the terminal device and / or the PDSCH associated with the PDCCH does not contain data of the terminal device. Therefore, the terminal device can choose not to receive the PDCCH (or, in other words, not to receive the PDCCH following the sequence). Compared to blind PDCCH detection, this method can reduce the complexity of PDCCH detection, thereby reducing the energy required for the terminal device to perform PDCCH detection.

[0063] In some scenarios, the aforementioned sequence detection-based PDCCH can also be called "sequence-based PDCCH".

[0064] The introduction of sequence detection-based PDCCH helps reduce the power consumption of terminal devices. This is because sequence detection is a one-time detection, eliminating the need for multiple blind detections, and it consumes less power than DCI decoding based on channel coding (such as forward error correction (FEC)). With sequence detection-based PDCCH, the terminal device only receives downlink payloads or transmits uplink payloads when it detects the sequence configured for it. This avoids unnecessarily activating the demodulator and FEC decoder to demodulate and decode the downlink payload, and also avoids prematurely activating the modulator and FEC encoder to modulate and code the uplink payload.

[0065] For this type of sequence-based PDCCH, different terminal devices require different sequences. However, since these sequences are usually orthogonal, and the number of orthogonal sequences is limited, the spectral efficiency is lower than that of blind detection-based PDCCH, making it difficult to handle a large number of terminal devices. This makes this type of sequence-based PDCCH unsuitable for scenarios with a large number of terminal devices. For example, if all terminal devices in a cell listen to sequence-based PDCCH, the PDCCH overhead of the cell will become very large. Therefore, it is difficult for the network to use sequence-based PDCCH for a large number of terminal devices.

[0066] In summary, both sequence-based and blind-detection-based PDCCH have their own advantages and disadvantages. Therefore, to balance the power consumption of terminal devices detecting PDCCH and the spectral efficiency of PDCCH, this application proposes a communication system compatible with both types of PDCCH: sequence-based PDCCH and blind-detection-based PDCCH. However, in this case, how terminal devices listen to PDCCH and / or how network devices transmit PDCCH becomes a pressing issue.

[0067] To address the aforementioned issues, this application proposes that when a terminal device needs to monitor multiple types of PDCCH, the terminal device can first determine the type of PDCCH to be monitored (or needs to be monitored), and then monitor the PDCCH sent by the network device based on the determination result. Correspondingly, when a network device needs to send multiple types of PDCCH, the network device can first determine the type of PDCCH to be sent (or needs to be sent), and then send the PDCCH to the terminal device based on the determination result. This helps ensure that both the terminal device and the network device clearly understand the type of PDCCH to be monitored and the type of PDCCH to be sent.

[0068] For ease of understanding, the following section will first introduce the method embodiments of this application.

[0069] Figure 6 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 6 is described from the perspective of interaction between a terminal device and a network device, which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1. The method shown in Figure 6 may include steps S620 and S630, which will be described below.

[0070] In step S620, the terminal device determines the type of the PDCCH being monitored. Correspondingly, the network device determines the type of the PDCCH being sent.

[0071] This application does not limit the implementation method of the terminal device determining the type of PDCCH to be monitored in the embodiments. As one possible implementation, the terminal device can determine the type of PDCCH to be monitored based on whether it needs to enter power-saving mode. For example, if the terminal device needs to enter power-saving mode, it can determine that the type of PDCCH to be monitored is a sequence-based detection PDCCH. As another example, if the terminal device does not need to enter power-saving mode, it can determine that the type of PDCCH to be monitored is a blind-detection-based PDCCH, or the terminal device can determine that the type of PDCCH to be monitored includes both blind-detection-based and sequence-based PDCCH.

[0072] As another possible implementation, the terminal device can determine the type of PDCCH to be monitored based on its battery level. For example, if the terminal device's battery level is below or equal to a certain threshold, the terminal device can determine that the type of PDCCH to be monitored is a sequence-based detection PDCCH. Alternatively, if the terminal device's battery level is above the threshold, the terminal device can determine that the type of PDCCH to be monitored is a blind detection-based PDCCH, or the terminal device can determine that the types of PDCCH to be monitored include both blind detection-based and sequence-based PDCCH.

[0073] Similarly, network devices can determine the type of PDCCH to send (or need to send) based on whether the terminal device needs to enter power-saving mode and / or the terminal device's battery level.

[0074] In step S630, the terminal device listens for the PDCCH sent by the network device based on the determined type of the PDCCH being listened to. Correspondingly, the network device can send a PDCCH to the terminal device based on the determined type of the PDCCH being sent.

[0075] For example, if the terminal device determines that the type of PDCCH it is listening to is a sequence-based PDCCH, then the terminal device listens to the sequence-based PDCCH (i.e., the PDCCH sent by the sequence-based network device) in step S630. Correspondingly, the network device sends the sequence-based PDCCH to the terminal device in step S630.

[0076] For example, if the terminal device determines that the type of PDCCH it is listening to is a blind detection-based PDCCH, then the terminal device listens to the blind detection-based PDCCH (i.e., the PDCCH sent by the blind detection network device) in step S630. Correspondingly, the network device sends the blind detection-based PDCCH to the terminal device in step S630.

[0077] For example, if the terminal device determines that the PDCCH it is listening to is either a sequence-based PDCCH or a blind-based PDCCH, then in step S630, the terminal device will listen to both the sequence-based and blind-based PDCCH. Correspondingly, for the network device, in step S630, the network device can flexibly schedule the type of PDCCH sent. For example, the network device can send a sequence-based PDCCH, a blind-based PDCCH, or both to the terminal device.

[0078] In some embodiments, after determining the type of the PDCCH to be sent, the network device can indicate the determination result to the terminal device. In this way, the terminal device can listen to the PDCCH based on the network device's indication. This approach helps ensure that both the terminal device and the network device clearly understand the type of PDCCH to be listened to and the type of PDCCH to be sent; it also helps avoid misunderstandings between the terminal device and the network device that could lead to PDCCH listening failure. As one possible implementation, after determining the type of the PDCCH to be sent, the network device can send second information to the terminal device. This second information can be used to indicate the type of PDCCH sent by the network device. In this way, the terminal device can listen to the PDCCH sent by the network device based on the second information sent by the network device. It should be noted that the following examples illustrate the process of the terminal device indicating first information to the network device, but the process of the network device indicating second information to the terminal device is similar. For details, please refer to the relevant description of the first information below; this application will not repeat it further.

[0079] In some embodiments, the network device determining the type of the PDCCH to be sent can mean that, after receiving first information sent by the terminal device (described below), the network device can determine the type of the PDCCH to be sent based on the first information. As one possible implementation, the network device can authorize / reject (or accept / deny) the type of PDCCH to be monitored indicated by the terminal device in the first information.

[0080] As an example, the terminal device indicates in the first message that it is listening to the sequence detection-based PDCCH, and the network device can grant the request, that is, the network device determines to send the sequence detection-based PDCCH.

[0081] As another example, if the terminal device indicates in the first message that it is listening to a sequence-based PDCCH, the network device can reject the request, meaning the network device determines to send another type of PDCCH. For example, the network device determines to send a blind-based PDCCH, or the network device determines to send both a blind-based PDCCH and a sequence-based PDCCH simultaneously.

[0082] In some embodiments, after the network device authorizes the terminal device to listen for the type of PDCCH indicated in the first information, it can send a PDCCH to the terminal device based on the type of PDCCH indicated by the terminal device. For example, if the terminal device indicates in the first information that it is listening for a sequence-based PDCCH, the network device can authorize the request, that is, the network device determines to send a sequence-based PDCCH. Afterwards, the network device can send the sequence-based PDCCH to the terminal device.

[0083] In some embodiments, after the network device rejects the type of PDCCH to be listened to as indicated by the terminal device in the first information, it can maintain the original type of PDCCH being sent. For example, if the network device was originally sending a sequence detection-based PDCCH to the terminal device, and the terminal device requests to listen to a blind detection-based PDCCH through the first information, the network device can reject the request and then send a sequence detection-based PDCCH to the terminal device.

[0084] In some embodiments, after the network device rejects the type of PDCCH being monitored indicated by the terminal device in the first information, it can fall back to sending the default PDCCH type. Taking the default PDCCH type as a sequence detection-based PDCCH as an example, after the network device rejects the type of PDCCH being monitored indicated by the terminal device in the first information, it can send a sequence detection-based PDCCH to the terminal device.

[0085] In some embodiments, the network device may send permission / rejection indication information to the terminal device. For example, when the network device needs to reject the terminal device's request (i.e., the network device does not accept the type of PDCCH that the terminal device requests to listen to), the network device may send rejection indication information to the terminal device. As another example, when the network device needs to permit the terminal device's request (i.e., the network device accepts the type of PDCCH that the terminal device requests to listen to), the network device may send permission indication information to the terminal device. However, the embodiments of this application are not limited to this. For example, the terminal device and the network device may, by default, not send (omit sending) permission indication information when permitting the terminal device's request, or the terminal device and the network device may, by default, not send rejection indication information when rejecting the terminal device's request.

[0086] It should be noted that this application does not limit the network device to determining the type of PDCCH to be sent. For example, if the terminal device indicates the type of PDCCH it is listening to through the first information, the network device can directly send the corresponding PDCCH based on the terminal device's indication. In this case, the step of the network device determining the type of PDCCH to be sent can be omitted, or the network device determining the type of PDCCH to be sent can be understood as the network device determining the type of PDCCH requested by the terminal device as the type of PDCCH to be sent.

[0087] In some embodiments, after determining the type of PDCCH to be monitored, the terminal device can indicate the determination result (i.e., the first information below) to the network device. In this way, the network device can send the PDCCH to the terminal device based on the terminal device's instruction. This scheme helps ensure that both the terminal device and the network device clearly understand the type of PDCCH to be monitored and the type of PDCCH to be sent; it also helps avoid misunderstandings between the terminal device and the network device that could lead to PDCCH monitoring failure. This will be described in detail below.

[0088] In some embodiments, the method shown in FIG6 may further include step S610. In step S610, the terminal device sends first information to the network device.

[0089] In this embodiment, the first information can be used to indicate the type of PDCCH that the terminal device is listening to. Alternatively, the first information can be used to indicate the type of PDCCH that the terminal device needs to (or expects to) listen to. In other words, the terminal device can use the first information to indicate the type of PDCCH that it subsequently wants to listen to.

[0090] In some embodiments, the type of PDCCH listened to by the terminal device (or the type of PDCCH indicated by the first information) may include one or more of the following: sequence detection-based PDCCH, blind detection-based PDCCH.

[0091] As an example, the terminal device may indicate in the first information that the type of PDCCH being monitored includes sequence detection-based PDCCH.

[0092] As another example, the terminal device may indicate in the first information that the type of PDCCH being monitored includes blind detection-based PDCCH.

[0093] As another example, the terminal device may indicate in the first information that the type of PDCCH being monitored includes sequence detection-based PDCCH and blind detection-based PDCCH.

[0094] In some embodiments, a sequence-detection-based PDCCH may include a first information field and a second information field. The first information field is used to carry the sequence, or in other words, the first information field is used to carry the sequence in the PDCCH. Therefore, the first information field may also be referred to as the "sequence portion" or "sequence indication information," etc. The second information field may be used to carry the payload; therefore, the second information field may also be referred to as the "payload portion," "effective payload portion," etc.

[0095] In some embodiments, the payload carried in the second information domain may include a DCI. For example, the second information domain may carry a DCI for scheduling large-size PDSCH data (i.e., PDSCH with a large data volume).

[0096] In some embodiments, the payload carried in the second information field may include data. For example, the second information field may carry small-sized data (i.e., data with a small data volume). In the embodiments of this application, the terminal device's data is directly carried in the payload of the PDCCH. Compared to the terminal device first receiving DCI from the payload of the PDCCH and then receiving data in the PDSCH based on the DCI, the terminal device can skip the DCI and directly receive downlink data (such as low data rate downlink data) or send uplink data (such as low data rate uplink data), thereby helping to improve data transmission efficiency and reduce the energy required for the terminal device to receive data.

[0097] In some embodiments, the detection result of the first information field can be used to determine whether the second information field includes the payload of the terminal device that detected the first information field. That is, the detection result of the first information field can be used by the terminal device to determine whether to receive the payload in the second information field, or in other words, the detection result of the first information field can be used to indicate the terminal device corresponding to the payload in the second information field. In this way, the terminal device can determine whether the second information field includes its own payload (DCI or data) based on the detection result of the first information field.

[0098] In some embodiments, if the terminal device determines that the second information field includes its own payload based on the detection result of the first information field, the terminal device can directly receive the PDCCH, that is, receive the second information field located after the first information field.

[0099] In some embodiments, if the terminal device determines, based on the detection result of the first information field, that the second information field does not include its own payload, the terminal device will not receive the PDCCH, that is, it will no longer receive the second information field located after the first information field.

[0100] It should be noted that the embodiments of this application do not limit the name of the sequence detection-based PDCCH. For example, the sequence detection-based PDCCH can be called "sequence-based PDCCH", "Type 1 PDCCH", or other names. In addition, other introductions about the sequence detection-based PDCCH can be found above, and will not be repeated here.

[0101] In some embodiments, for a blind detection-based PDCCH, the terminal device can detect the PDCCH candidates in the CORESET according to the search space to determine whether there is a DCI belonging to it among the candidate PDCCHs. For example, the blind detection-based PDCCH can be the PDCCH in the NR system, and related information can be found above, so it will not be repeated here.

[0102] In this case, step S630 above can be replaced by: the terminal device listening to the PDCCH sent by the network device based on the first information. Correspondingly, the network device sends the PDCCH to the terminal device based on the first information.

[0103] For example, if the first information indicates that the PDCCH being listened to by the terminal device is a sequence-based PDCCH, then the terminal device listens to the sequence-based PDCCH (i.e., the PDCCH sent by the sequence-based network device) in step S630. Correspondingly, the network device sends the sequence-based PDCCH to the terminal device in step S630.

[0104] For example, if the first information indicates that the type of PDCCH being listened to by the terminal device is a blind detection-based PDCCH, then the terminal device listens to the blind detection-based PDCCH (i.e., the PDCCH sent by the blind detection network device) in step S630. Correspondingly, the network device sends the blind detection-based PDCCH to the terminal device in step S630.

[0105] For example, if the first information indicates that the terminal device is listening to both sequence-based and blind-based PDCCH, then in step S630, the terminal device will listen to both sequence-based and blind-based PDCCH. Correspondingly, for the network device, in step S630, the network device can flexibly schedule the type of PDCCH sent. For example, the network device can send sequence-based PDCCH, blind-based PDCCH, or both to the terminal device.

[0106] In some embodiments, the terminal device listening to the PDCCH can be understood as the terminal device monitoring the resources (such as CORESET) corresponding to the PDCCH. For example, the terminal device listening to a sequence-based detection PDCCH can be understood or replaced as the terminal device monitoring the resources corresponding to the sequence-based detection PDCCH, or in other words, the terminal device monitoring the resources where the sequence-based detection PDCCH resides. As another example, the terminal device listening to a blind detection-based PDCCH can be understood or replaced as the terminal device monitoring the resources corresponding to the blind detection-based PDCCH, or in other words, the terminal device monitoring the resources where the blind detection-based PDCCH resides. The configuration of the resources corresponding to the sequence-based detection PDCCH and the resources corresponding to the blind detection-based PDCCH will be described in detail later, and will not be elaborated here.

[0107] In other words, in this embodiment of the application, the terminal device and the network device can determine the type of PDCCH to be monitored and / or the type of PDCCH to be sent based on the first information. On the one hand, this helps to ensure that the terminal device clearly understands the type of PDCCH to be monitored and the network device clearly understands the type of PDCCH to be sent; on the other hand, it helps to avoid ambiguity in understanding between the terminal device and the network device, which could lead to PDCCH monitoring failure.

[0108] As mentioned above, the first information can be used to indicate the type of PDCCH that the terminal device is listening to. The first information will be described in detail below.

[0109] In some embodiments, the transmission of the first information is event-triggered. This application does not limit the event that triggers the transmission of the first information. Exemplarily, the event may be related to one or more of the following: whether the terminal device needs to enter power-saving mode, and the terminal device's battery status (or power condition). In other words, the transmission of the first information can be determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the terminal device's battery status.

[0110] As an example, when a terminal device needs to enter power-saving mode, it can send initial information to the network device.

[0111] As another example, when a terminal device needs to exit power-saving mode, it can send a first message to the network device.

[0112] As another example, when a terminal device needs to enter power saving mode, the terminal device can send the first message to the network device, and when the terminal device needs to exit power saving mode, the terminal device sends the first message to the network device again.

[0113] As another example, when the terminal device's battery level is below a first threshold, the terminal device can send a first message to the network device.

[0114] As another example, when the terminal device's battery level is higher than the second threshold, the terminal device can send the first message to the network device.

[0115] As another example, when the battery level of the terminal device is lower than a first threshold, the terminal device can send a first message to the network device, and when the battery level of the terminal device is higher than a second threshold, the terminal device sends the first message to the network device again.

[0116] This application does not limit the implementation method for determining whether a terminal device needs to enter power-saving mode. One possible implementation is to determine whether the terminal device needs to enter power-saving mode based on its battery status (e.g., remaining battery power). For example, when the terminal device's battery level is below a first threshold, it can be considered that the terminal device needs to enter power-saving mode; when the terminal device's battery level is above a second threshold, it can be considered that the terminal device needs to exit power-saving mode (i.e., it does not need to enter power-saving mode). Another possible implementation is to determine whether the terminal device needs to enter power-saving mode based on its data transmission and reception activities. For example, when the terminal device has not transmitted or received data for an extended period, it can be considered that the terminal device needs to enter power-saving mode; when the terminal device has transmitted or received data for a short period, it can be considered that the terminal device needs to exit power-saving mode (i.e., it does not need to enter power-saving mode).

[0117] This application does not limit the first threshold and the second threshold in its embodiments. In some embodiments, the first threshold and the second threshold may be equal. In some embodiments, the first threshold and the second threshold may be unequal, for example, the first threshold may be less than the second threshold.

[0118] This application does not limit the method of carrying the first information, as long as it is sent to the network device through uplink resources. For example, the first information can be carried by one or more of the following: scheduling request (SR) and random access channel (RACH).

[0119] As an example, the initial information can be carried by the SR.

[0120] As another example, the first information can be carried via RACH.

[0121] As yet another example, the first message can be carried through SR and RACH.

[0122] In some embodiments, the first information may include a PDCCH type indicator. For example, the first information may be a PDCCH type indicator. The PDCCH type indicator may be used to indicate the type of PDCCH (such as a blind detection-based PDCCH or a sequence detection-based PDCCH).

[0123] This application does not limit the number of bits occupied by the PDCCH type indicator. As an example, the PDCCH type indicator can occupy 1 bit. When this 1 bit takes on a first value, it represents a PDCCH based on blind detection; when this 1 bit takes on a second value, it represents a PDCCH based on sequence detection. As another example, the PDCCH type indicator can occupy multiple bits. When these multiple bits take on a first value, it represents a PDCCH based on blind detection; when these multiple bits take on a second value, it represents a PDCCH based on sequence detection; and when these multiple bits take on a third value, it represents both a PDCCH based on sequence detection and a PDCCH based on blind detection.

[0124] The embodiments of this application do not limit the implementation of the type of PDCCH monitored by the first information indication terminal device, which will be described below with reference to Figures 7 to 11.

[0125] In some embodiments, the first information may include different values ​​indicating different PDCCH types. Alternatively, the first information may include multiple values, with different values ​​indicating different PDCCH types. For example, the first information may include a first value and a second value, where the first value corresponds to a different PDCCH type than the second value.

[0126] One implementation approach is to include a first value and a second value. The first value indicates that the PDCCH being monitored by the terminal device is a sequence-based detection PDCCH, and the second value indicates that the PDCCH being monitored by the terminal device is a blind detection PDCCH. In other words, the terminal device can choose to monitor one type of PDCCH based on the first information. Thus, after the terminal device sends the first information, if the first information is the first value, the terminal device will subsequently monitor a sequence-based detection PDCCH; if the first information is the second value, the terminal device will subsequently monitor a blind detection PDCCH. Alternatively, after the terminal device sends the first information, if the first information is the first value, the terminal device will monitor the resources corresponding to the sequence-based detection PDCCH; if the first information is the second value, the terminal device will monitor the resources corresponding to the blind detection PDCCH. Correspondingly, after the network device receives the first information, if the first information is the first value, the network device will subsequently send a sequence-based detection PDCCH; if the first information is the second value, the terminal device will subsequently send a blind detection PDCCH.

[0127] Referring to Figure 7, the terminal device can send a first message with a first value (e.g., 1) to the network device, after which the terminal device only listens to the PDCCH based on sequence detection. After a period of time, the terminal device can send a first message with a second value (e.g., 0) to the network device, after which the terminal device only listens to the PDCCH based on blind detection. In other words, the terminal device can send a first message with a first value (e.g., 1) to the network device, after which the terminal device only monitors the resources corresponding to the PDCCH based on sequence detection. After a period of time, the terminal device can send a first message with a second value (e.g., 0) to the network device, after which the terminal device only monitors the resources corresponding to the PDCCH based on blind detection. For example, the terminal device can determine whether to enter power-saving mode based on battery level. When the terminal device's battery is low and it needs to enter power-saving mode, the terminal device sends a first message with a first value (e.g., 1) to the network device, after which the terminal device only listens to the PDCCH based on sequence detection. When the terminal device's battery level improves and it can exit power-saving mode, the terminal device can send a first message with a second value (e.g., 0) to the network device, after which the terminal device only listens to the PDCCH based on blind detection.

[0128] In this implementation, some terminal devices (such as those requiring energy saving) can send first information to the network device to enter the state of listening to PDCCH based on sequence detection, while other terminal devices (such as those not in urgent need of energy saving) still listen to PDCCH based on blind detection. This allows for energy saving of some terminal devices while keeping the overall PDCCH overhead of the cell under control.

[0129] As another implementation, the first information may include a first value and a second value. The first value indicates that the PDCCH type being monitored by the terminal device is a sequence-based detection PDCCH, and the second value indicates that the PDCCH type being monitored by the terminal device is either a sequence-based detection PDCCH or a blind detection PDCCH. In this way, after the terminal device sends the first information, if the first information is the first value, the terminal device will subsequently monitor a sequence-based detection PDCCH; if the first information is the second value, the terminal device will subsequently monitor both sequence-based detection PDCCH and blind detection PDCCH. Alternatively, after the terminal device sends the first information, if the first information is the first value, the terminal device will subsequently monitor the resources corresponding to the sequence-based detection PDCCH; if the first information is the second value, the terminal device will subsequently monitor the resources corresponding to both sequence-based detection PDCCH and blind detection PDCCH. Correspondingly, after the network device receives the first information, if the first information is the first value, the network device will subsequently send a sequence-based detection PDCCH; if the first information is the second value, the network device can flexibly send PDCCH. For example, when the first information is the second value, the network device can send a PDCCH based on sequence detection, or it can send a PDCCH based on blind detection, or it can send both a PDCCH based on sequence detection and a PDCCH based on blind detection.

[0130] Referring to Figure 8, the terminal device can send a first message with a value of 1 (e.g., 1) to the network device, after which the terminal device only listens to the PDCCH based on sequence detection. After a period of time, the terminal device can send a first message with a value of 0 (e.g., 2), after which the terminal device simultaneously listens to both the PDCCH based on sequence detection and the PDCCH based on blind detection. In other words, the terminal device can send a first message with a value of 1 (e.g., 1) to the network device, after which the terminal device only monitors the resources corresponding to the PDCCH based on sequence detection. After a period of time, the terminal device can send a first message with a value of 0 (e.g., 2), after which the terminal device simultaneously monitors the resources corresponding to both the PDCCH based on sequence detection and the PDCCH based on blind detection. For example, the terminal device can determine whether to enter power-saving mode based on battery power. When the terminal device has limited battery power and needs to enter power-saving mode, the terminal device sends a first message with a value of 0 to the network device, after which the terminal device only listens to the PDCCH based on sequence detection. When the terminal device's battery level improves and it can exit power-saving mode, the terminal device can send a first message with a second value (such as 0) to the network device. After that, the terminal device simultaneously listens to both the sequence detection-based PDCCH and the blind detection-based PDCCH.

[0131] In this implementation, some terminal devices (such as those requiring energy saving) can send a first message to the network device to enter a state of listening to PDCCH based on sequence detection, while other terminal devices (such as those not urgently needing energy saving) continue to listen to PDCCH based on blind detection. This allows for energy saving for some terminal devices while keeping the overall PDCCH overhead of the cell under control. Furthermore, in this implementation, terminal devices monitor both types of PDCCH simultaneously. This allows the network device to flexibly use both types of PDCCH to send DCI and / or data to the terminal devices, improving scheduling flexibility. Additionally, simultaneous monitoring of both types of PDCCH by the terminal devices helps avoid misunderstandings caused by the network device missing the first message, i.e., the network device sending a PDCCH type that the terminal device is not listening to, resulting in the terminal device failing to receive the PDCCH (or DCI).

[0132] As another implementation, the first information may include a first value and a second value, wherein the first value indicates that the type of PDCCH being monitored by the terminal device is a blind detection-based PDCCH, and the second value indicates that the type of PDCCH being monitored by the terminal device is a sequence detection-based PDCCH and a blind detection-based PDCCH.

[0133] This application does not limit the specific values ​​of the first and second values, as long as they are different. As one possible implementation, the first value is "0" and the second value is "1". As another possible implementation, the first value is "1" and the second value is "0". As yet another possible implementation, the first value is "PDCCH based on sequence detection" and the second value is "PDCCH based on blind detection". As yet another possible implementation, the first value is "PDCCH based on sequence detection", and the second value is "PDCCH based on sequence detection and PDCCH based on blind detection", etc.

[0134] In some embodiments, the first information may include a value representing a PDCCH type. That is, whenever the terminal device sends the first information, it means that the terminal device needs to listen to a certain fixed PDCCH type, and / or that the network device needs to send a certain fixed PDCCH type. For example, the first information may include a first value, which may represent a first type of PDCCH. In this way, whenever the terminal device sends the first information to the network device, it means that the terminal device needs to listen to a first type of PDCCH, and the network device needs to send a first type of PDCCH.

[0135] In some embodiments, the terminal device may include a default (or default) PDCCH type to listen to. For example, after listening to the PDCCH for a period of time based on the first information, the terminal device may switch back to (or fall back to) listening to the default PDCCH type. The terminal device will listen to the default PDCCH type before sending the first information again.

[0136] In some embodiments, the first information may include a first value, which instructs the terminal device to listen to a first type of PDCCH. After listening to the first type of PDCCH for a first duration based on the first value, the terminal device may begin listening to a second type of PDCCH. In some embodiments, the second type of PDCCH listened to by the terminal device may be referred to as or understood as the default PDCCH type.

[0137] As one implementation, the first type of PDCCH mentioned above includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH. That is, after sending the first information, the terminal device can listen for sequence detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to listening for blind detection-based PDCCH. Alternatively, after sending the first information, the terminal device can monitor the resources corresponding to the sequence detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to monitoring the resources corresponding to the blind detection-based PDCCH. Correspondingly, after receiving the first information, the network device sends a sequence detection-based PDCCH for a period of time (a first duration), after which the network device automatically switches (falls back) to sending a blind detection-based PDCCH.

[0138] Referring to Figure 9, the terminal device can send a first message to the network device. Afterward, the terminal device listens only to the PDCCH based on sequence detection for a first duration. After the first duration, the terminal device automatically falls back to listening only to the PDCCH based on blind detection. In other words, after sending the first message to the network device, the terminal device monitors only the resources corresponding to the PDCCH based on sequence detection for the first duration. Afterward, the terminal device automatically falls back to monitoring only the resources corresponding to the PDCCH based on blind detection. For example, the terminal device can determine whether to enter power-saving mode based on battery power. When the terminal device has limited battery power and needs to enter power-saving mode, the terminal device sends the first message to the network device. Afterward, the terminal device listens only to the PDCCH based on sequence detection for the first duration. After the first duration expires, the terminal device falls back to the default mode and begins listening only to the PDCCH based on blind detection.

[0139] In this implementation, some terminal devices (such as those requiring energy saving) can send a first message to the network device to enter the state of listening to PDCCH based on sequence detection, while other terminal devices (such as those not urgently needing energy saving) continue to listen to PDCCH based on blind detection. This allows for energy saving for some terminal devices while keeping the overall PDCCH overhead of the cell under control. Furthermore, in this implementation, terminal devices can automatically fall back to listening to the default PDCCH type after a period of time, without needing to send a first message to switch the PDCCH type. This helps save uplink signaling overhead and avoids misunderstandings caused by the network device missing the terminal device's first message (i.e., the terminal device has switched the PDCCH type, but the network device still sends the PDCCH according to the previous first message, resulting in the terminal device not receiving the PDCCH). This is because, in this implementation, even if the network device misses the terminal device's first message, both the terminal device and the network device can still simultaneously fall back to the blind detection-based PDCCH mode for transmission and reception based on the first duration, ensuring successful PDCCH reception.

[0140] As another implementation, the first type of PDCCH mentioned above includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH. That is, after sending the first information, the terminal device can listen for blind detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to listening for sequence detection-based PDCCH. Alternatively, after sending the first information, the terminal device can monitor the resources corresponding to the blind detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to monitoring the resources corresponding to the sequence detection-based PDCCH. Correspondingly, after receiving the first information, the network device sends blind detection-based PDCCH for a period of time (a first duration), after which the network device automatically switches (falls back) to sending sequence detection-based PDCCH.

[0141] Referring to Figure 10, the terminal device can send a first message to the network device. Afterward, the terminal device listens only to the blind-detection-based PDCCH for a first duration. After the first duration, the terminal device automatically falls back to listening only to the sequence-detection-based PDCCH. In other words, after sending the first message to the network device, the terminal device monitors only the resources corresponding to the blind-detection-based PDCCH for the first duration. Afterward, the terminal device automatically falls back to monitoring only the resources corresponding to the sequence-detection-based PDCCH. For example, the terminal device can determine whether to enter power-saving mode based on battery power. When the terminal device's battery is not limited and power-saving mode is not needed, the terminal device sends the first message to the network device. Afterward, the terminal device listens only to the blind-detection-based PDCCH for the first duration. After the first duration expires, the terminal device falls back to the default mode, enters power-saving mode, and begins listening only to the sequence-detection-based PDCCH.

[0142] In this implementation, the terminal device can default to a power-saving mode, or in other words, the default PDCCH type for the terminal device is sequence detection-based PDCCH. This allows the terminal device to send a first message to the network device when its power is not limited, entering a state of listening to blind detection-based PDCCH. This helps to maintain controllable overall PDCCH overhead for the cell while still achieving energy savings for some terminal devices. Furthermore, using power-saving mode as the default mode for the terminal device in this implementation further facilitates energy conservation. Additionally, in this implementation, the terminal device can automatically fall back to listening to the default PDCCH type after a period of time, without needing to send a first message to switch the PDCCH type. This saves uplink signaling overhead and avoids misunderstandings caused by the network device missing the terminal device's first message (i.e., the terminal device has switched the PDCCH type, but the network device still sends the PDCCH according to the previous first message, resulting in the terminal device not receiving the PDCCH). This is because, in this implementation, even if the network device misses detecting the terminal device's first information, the terminal device and the network device can still simultaneously fall back to the blind detection-based PDCCH method for sending and receiving based on the first duration, ensuring the successful reception of the PDCCH.

[0143] As another implementation, the first type of PDCCH mentioned above includes sequence detection-based PDCCH, and the second type of PDCCH includes both sequence detection-based and blind detection-based PDCCH. That is, after sending the first information, the terminal device can listen for sequence detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to listening for both sequence detection-based and blind detection-based PDCCH. Alternatively, after sending the first information, the terminal device can monitor the resources corresponding to the sequence detection-based PDCCH for a period of time (a first duration), after which the terminal device automatically switches (falls back) to monitoring the resources corresponding to both sequence detection-based and blind detection-based PDCCH. Correspondingly, after receiving the first information, the network device sends the sequence detection-based PDCCH for a period of time (a first duration), after which the network device automatically switches (falls back) to flexibly sending PDCCH. For example, after the first duration, the network device can send a PDCCH based on sequence detection, or it can send a PDCCH based on blind detection, or it can send both a PDCCH based on sequence detection and a PDCCH based on blind detection.

[0144] Referring to Figure 11, the terminal device can send a first message to the network device. Afterward, the terminal device only listens to the sequence-based detection PDCCH for a first duration. After the first duration, the terminal device automatically falls back to simultaneously listening to both sequence-based and blind-detection PDCCH. In other words, after sending the first message to the network device, the terminal device only monitors the resources corresponding to the sequence-based detection PDCCH for the first duration. Afterward, the terminal device automatically falls back to simultaneously monitoring the resources corresponding to both sequence-based and blind-detection PDCCH. For example, the terminal device can determine whether to enter power-saving mode based on battery power. When the terminal device has limited battery power and needs to enter power-saving mode, the terminal device sends the first message to the network device. Afterward, the terminal device only listens to the sequence-based detection PDCCH for the first duration. After the first duration expires, the terminal device falls back to the default mode, simultaneously listening to both sequence-based and blind-detection PDCCH.

[0145] In this implementation, some terminal devices (such as those requiring energy saving) can send a first message to the network device to enter the state of listening to PDCCH based on sequence detection, while other terminal devices (such as those not urgently needing energy saving) simultaneously listen to both PDCCH based on sequence detection and PDCCH based on blind detection. This allows for energy saving for some terminal devices while keeping the overall PDCCH overhead of the cell under control. Furthermore, in this implementation, terminal devices can automatically fall back to listening to the default PDCCH type after a period of time, without needing to send a first message to switch the PDCCH type. This helps save uplink signaling overhead and avoids misunderstandings caused by the network device missing the terminal device's first message (i.e., the terminal device has switched the PDCCH type, but the network device still sends the PDCCH according to the previous first message, resulting in the terminal device not receiving the PDCCH). This is because, in this implementation, even if the network device misses the terminal device's first message, both the terminal device and the network device can still simultaneously fall back to the PDCCH based on blind detection for transmission and reception based on the first duration, ensuring successful PDCCH reception.

[0146] As another implementation, the aforementioned first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes both sequence detection-based and blind detection-based PDCCH. That is, after sending the first information, the terminal device can listen for blind detection-based PDCCH for a period of time (a first duration), after which it automatically switches (falls back) to listening for both sequence detection-based and blind detection-based PDCCH. Alternatively, after sending the first information, the terminal device can monitor the resources corresponding to the blind detection-based PDCCH for a period of time (a first duration), after which it automatically switches (falls back) to monitoring the resources corresponding to both sequence detection-based and blind detection-based PDCCH. Correspondingly, after receiving the first information, the network device sends blind detection-based PDCCH for a period of time (a first duration), after which it automatically switches (falls back) to flexibly sending PDCCH. For example, after the first duration, the network device can send a PDCCH based on sequence detection, or it can send a PDCCH based on blind detection, or it can send both a PDCCH based on sequence detection and a PDCCH based on blind detection.

[0147] The embodiments of this application do not limit the value of the first duration. For example, the first duration can be one of the following granularities: subframe, half-frame, time slot, symbol, millisecond, etc. As an example, the first duration is 5 milliseconds. As another example, the first duration is 1 subframe. As yet another example, the first duration is 10 time slots, etc.

[0148] This application does not limit the method of obtaining the first duration. As an example, the first duration is configured by the network device; for example, the network device can configure the first duration to the terminal device through broadcast or dedicated signaling. As another example, the first duration is pre-configured or predefined; for example, the first duration is predefined by the protocol.

[0149] In some embodiments, the first duration can be implemented using a timer. That is, the first duration can be indicated by the duration of the timer.

[0150] As one implementation, after sending the first piece of information, the terminal device can start or restart a timer. When the timer expires, the terminal device falls back to listening to the default PDCCH. For example, if the first type of PDCCH is a sequence detection-based PDCCH and the second type is a blind detection-based PDCCH, then the terminal device listens to the sequence detection-based PDCCH after sending the first piece of information, and when the timer expires, the terminal device listens to the blind detection-based PDCCH. As another example, if the first type of PDCCH is a blind detection-based PDCCH and the second type is a sequence detection-based PDCCH, then the terminal device listens to the blind detection-based PDCCH after sending the first piece of information, and when the timer expires, the terminal device listens to the sequence detection-based PDCCH. For example, if the first type of PDCCH is a sequence detection-based PDCCH, and the second type of PDCCH is a sequence detection-based PDCCH and a blind detection-based PDCCH, then after sending the first information, the terminal device listens to the sequence detection-based PDCCH. When the timer expires, the terminal device listens to both the sequence detection-based PDCCH and the blind detection-based PDCCH.

[0151] Correspondingly, after receiving the first information, the network device can start or restart a timer. When the timer expires, the network device falls back to sending the default PDCCH. For example, if the first type of PDCCH is a sequence detection-based PDCCH and the second type of PDCCH is a blind detection-based PDCCH, then the network device sends a sequence detection-based PDCCH after receiving the first information, and sends a blind detection-based PDCCH after the timer expires. As another example, if the first type of PDCCH is a blind detection-based PDCCH and the second type of PDCCH is a sequence detection-based PDCCH, then the network device sends a blind detection-based PDCCH after receiving the first information, and sends a sequence detection-based PDCCH after the timer expires. For example, if the first type of PDCCH is a sequence detection-based PDCCH, and the second type of PDCCH is a sequence detection-based PDCCH and a blind detection-based PDCCH, then after receiving the first information, the network device sends a sequence detection-based PDCCH. When the timer expires, the network device flexibly sends a sequence detection-based PDCCH and / or a blind detection-based PDCCH.

[0152] This application does not limit the timing method of the timer described above. As one possible implementation, the timer's duration T is a first duration. After the timer starts or restarts, the timer decreases from duration T. When the timer reaches 0, the terminal device falls back to listening to the default PDCCH type. As another possible implementation, the timer's duration T is a first duration. After the timer starts or restarts, the timer's duration increases from 0. When the timer's duration increases to T, the terminal device falls back to listening to the default PDCCH type.

[0153] The embodiments of this application do not limit the specific value of the first value. As one possible implementation, the first value is "0". As another possible implementation, the first value is "1". As yet another possible implementation, the first value is "PDCCH based on sequence detection". As yet another possible implementation, the first value is "PDCCH based on sequence detection", etc.

[0154] This application does not limit the number of bits occupied by the first information in its embodiments. As one possible implementation, the first information may occupy one bit. As an example, the first information can use this one bit to indicate a first value and a second value. That is, when the one bit is the first value, it means the terminal device is listening to one type of PDCCH; when the one bit is the second value, it means the terminal device is listening to another type of PDCCH. As another example, the first information can use this one bit to indicate a first value. That is, as long as the terminal device sends the first information to the network device (regardless of the value of this one bit), it means the terminal device is listening to a fixed type of PDCCH. As another possible implementation, the first information may occupy multiple bits (e.g., two or more bits). As an example, the first information can use these multiple bits to indicate a first value and a second value. That is, when these multiple bits are the first value, it means the terminal device is listening to one type of PDCCH; when these multiple bits are the second value, it means the terminal device is listening to another type of PDCCH. As another example, the first information can use these multiple bits to indicate a first value. In other words, as long as the terminal device sends the first information to the network device (regardless of the values ​​of the multiple bits), it means that the terminal device is listening to a certain fixed type of PDCCH.

[0155] As mentioned above, terminal devices can monitor resources corresponding to PDCCH based on sequence detection and / or resources corresponding to PDCCH based on blind detection. The configuration of these resources will be described below.

[0156] In some embodiments, the method further includes: the network device sending first configuration information to the terminal device, the first configuration information being used to configure a first resource. The first resource is used by the terminal device to listen to a sequence-based detection PDCCH. In other words, the first configuration information can be used to configure the temporal location of the sequence-based detection PDCCH.

[0157] In some embodiments, the first resource may include a time-domain resource. For example, the first resource may be a first time-domain resource.

[0158] In some embodiments, the first resource may be a CORESET. For example, the first resource may be called or replaced by the first CORESET.

[0159] In some embodiments, the first configuration information may be used to configure one or more of the following: the time-domain period of the first resource (or the PDCCH based on sequence detection), the time-domain position of the first resource (or the PDCCH based on sequence detection) in the period, the number of time-domain resources corresponding to the PDCCH based on sequence detection (or the time-domain length corresponding to the PDCCH based on sequence detection), and the format of the DCI carried in the PDCCH based on sequence detection.

[0160] Taking the time-domain period of the first configuration information used to configure the first resource as an example, the period can be a slot-level period, that is, the length of the period is represented by the number of slots N contained in it, where N is a positive integer greater than or equal to 1. Of course, in the embodiments of this 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.

[0161] Taking the first configuration information used to configure the temporal position of the first resource within a period as an example, this temporal position can be a slot-level temporal position and / or a symbol-level temporal position. The slot-level temporal position can be understood as the temporal offset from the reference slot of the period to the slot containing the sequence-based detection PDCCH, where the reference slot can be the first or last slot in the period. Correspondingly, the symbol-level temporal position can be understood as the temporal offset from the reference symbol of the period to the symbol containing the sequence-based detection PDCCH, where the reference symbol can be the first or last symbol in the period.

[0162] Taking the first configuration information used to configure the number of time-domain resources corresponding to the sequence detection-based PDCCH as an example, the first configuration information can be used to configure the number of symbols contained in the sequence detection-based PDCCH.

[0163] Taking the first configuration information used to configure the format of the DCI carried in the sequence detection-based PDCCH as an example, or in other words, the first configuration information is used to configure the format of the DCI that may be detected from the payload of the sequence detection-based PDCCH.

[0164] In some embodiments, the format of the DCI that may be detected from the payload of the sequence-detection-based PDCCH may include one or more, and this application embodiment is not limited in this regard. For example, the format of the DCI that may be detected from the payload of the sequence-detection-based PDCCH may include DCI format 0_1, DCI format 1_0, DCI format 0_2, etc.

[0165] In some embodiments, the first configuration information is associated with the bandwidth part (BWP) where the terminal device is located, and / or the first configuration information is associated with the carrier where the terminal device is located. That is, in some embodiments, the first configuration information may be based on one or more of the following granularities: BWP, carrier. Of course, in the embodiments of this application, the first configuration information may also be general configuration information.

[0166] In some embodiments, the first configuration information is based on BWP granularity configuration, which can be understood as configuring the first resource of PDCCH based on sequence detection for different BWPs.

[0167] In some embodiments, the first configuration information is based on carrier granularity configuration, which can be understood as configuring the first resource of PDCCH based on sequence detection for different carriers.

[0168] In some embodiments, the method further includes: the network device sending second configuration information to the terminal device, the second configuration information being used to configure a second resource (such as a second time-domain resource). The second resource is used by the terminal device to listen to a blind-detection-based PDCCH. In other words, the second configuration information can be used to configure the time-domain location of the search space for the blind-detection-based PDCCH.

[0169] In some embodiments, the second resource may include a time-domain resource. For example, the second resource may be a second time-domain resource.

[0170] In some embodiments, the second resource may be a CORESET. For example, the second resource may be referred to as or replaced by a second CORESET.

[0171] In some embodiments, the second resource and the first resource may be different. For example, the second resource and the first resource may be different cores to simplify the complexity of terminal device monitoring. However, the embodiments of this application are not limited to this; for example, the second resource and the first resource may be the same (e.g., the same core).

[0172] In some embodiments, the second configuration information is used to configure one or more of the following: the time domain period of the second resource (or the blind detection-based PDCCH); the time domain position of the second resource (or the blind detection-based PDCCH) in the period; the number of time domain resources corresponding to the blind detection-based PDCCH (or the time domain length corresponding to the blind detection-based PDCCH); and the format of the DCI carried in the blind detection-based PDCCH.

[0173] Taking the time-domain period of the second configuration information used to configure the second resource as an example, the period can be a slot-level period, that is, the length of the period is represented by the number of slots N contained in the period, where N is a positive integer greater than or equal to 1. Of course, in the embodiments of this 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.

[0174] Taking the second configuration information used to configure the time domain position of the second resource in the period as an example, the time domain position can be a time slot-level time domain position and / or a symbol-level time domain position.

[0175] In some embodiments, 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 corresponding to the search space of the blind detection-based PDCCH, wherein the reference time slot may be the first time slot or the last time slot in the period.

[0176] In this embodiment, the time slot corresponding to the search space is not limited. In some implementations, the time slot corresponding to the search space may include the first time slot corresponding to the search space. In other implementations, the time slot corresponding to the search space may include the last time slot corresponding to the search space. Of course, in this embodiment, the time slot corresponding to the search space may include any one of the time slots corresponding to the search space.

[0177] In some embodiments, the symbol-level temporal position can be understood as the temporal offset between the reference symbol within a period and the corresponding symbol in the search space of the blind detection-based PDCCH, wherein the reference symbol can be the first symbol or the last symbol in the period.

[0178] In this embodiment, the symbol corresponding to the search space is not limited. In some implementations, the symbol corresponding to the search space may include the first symbol corresponding to the search space. In other implementations, the symbol corresponding to the search space may include the last symbol corresponding to the search space. Of course, in this embodiment, the symbol corresponding to the search space may include any symbol corresponding to the search space.

[0179] Taking the second configuration information used to configure the number of time-domain resources corresponding to the blind detection-based PDCCH as an example, the second configuration information can be used to configure the number of symbols included in the search space of the blind detection-based PDCCH.

[0180] Taking the second configuration information used to configure the format of DCI carried in a blind detection-based PDCCH as an example, or in other words, the second configuration information is used to configure the format of DCI that may be detected from the payload of a blind detection-based PDCCH.

[0181] In some embodiments, the format of the DCI that may be detected from the payload of the blind detection-based PDCCH may include one or more formats. For example, the format of the DCI that may be detected from the payload of the blind detection-based PDCCH may include DCI format 0_1, DCI format 1_0, DCI format 0_2, etc.

[0182] In some embodiments, the second configuration information is associated with the BWP (Browser Window) where the terminal device is located, and / or the first configuration information is associated with the carrier where the terminal device is located. That is, in some embodiments, the second configuration information can be based on one or more configurations at the following granularities: BWP, carrier. Of course, in the embodiments of this application, the second configuration information can also be general configuration information.

[0183] In some embodiments, the second configuration information is based on BWP granularity configuration, which can be understood as configuring a second resource based on blind detection PDCCH for different BWPs.

[0184] In some embodiments, the second configuration information is based on carrier granularity configuration, which can be understood as configuring the second resource of PDCCH based on blind detection for different carriers.

[0185] In some embodiments, the network device may send first configuration information and second configuration information to the terminal device.

[0186] In other words, network devices can configure at least one of a first resource and a second resource for terminal devices (e.g., simultaneously configuring both). Taking the first and second resources as CORESETs, a network device can configure at least two CORESETs for a terminal device. One CORESET is used for the terminal device to listen to sequence-based detection PDCCHs, and the other CORESET is used for the terminal device to listen to blind detection PDCCHs. In this way, the terminal device can listen to PDCCHs in the corresponding CORESET based on the specific type of PDCCH being listened to. Configuring different resources (such as different CORESETs) for different types of PDCCHs improves configuration flexibility. For example, the time-frequency resources for sequence-based PDCCHs may be smaller; therefore, the network device can configure a relatively smaller CORESET for sequence-based PDCCHs and a relatively larger CORESET for blind detection PDCCHs.

[0187] The preceding text describes how network devices send PDCCHs based on requests (i.e., first information) from terminal devices. However, this application's embodiments are not limited to this. For example, after configuring first and second resources, the network device can send two types of PDCCHs, and the terminal device can determine (or select) one type of PDCCH to listen to. In this case, the terminal device may not send the first information to the network device; that is, the terminal device may not indicate (or request) the type of PDCCH to listen to.

[0188] The method embodiments of this application have been described in detail above with reference to Figures 1 to 11. The apparatus embodiments of this application will be described in detail below with reference to Figures 12 to 14. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0189] Figure 12 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 1200 shown in Figure 12 includes a determining module 1210 and a first listening module 1220. The determining module 1210 is used to determine the type of PDCCH being listened to. The first listening module 1220 is used to listen to PDCCH sent by the network device based on the determined type of the PDCCH being listened to. The type of PDCCH listened to by the terminal device includes one or more of the following: sequence-based PDCCH, and blind-based PDCCH.

[0190] In some embodiments, the terminal device further includes: a sending module, configured to send first information to the network device, the first information being used to indicate the type of PDCCH being listened to by the terminal device; the listening module is configured to: listen to the PDCCH sent by the network device based on the first information.

[0191] In some embodiments, the first information includes a first value and a second value, wherein the type of the PDCCH corresponding to the first value and the second value is different.

[0192] In some embodiments, the terminal device listening to the PDCCH sent by the network device based on the first information includes: if the first information is the first value, the terminal device listens to the PDCCH based on sequence detection; if the first information is the second value, the terminal device listens to the PDCCH based on blind detection.

[0193] In some embodiments, the terminal device listening to the PDCCH sent by the network device based on the first information includes: if the first information is the first value, the terminal device listening to the PDCCH based on sequence detection; if the first information is the second value, the terminal device listening to the PDCCH based on sequence detection and the PDCCH based on blind detection.

[0194] In some embodiments, the first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The terminal device further includes a second listening module, which is used to listen to the first type of PDCCH for a first duration based on the first value, and then start listening to a second type of PDCCH.

[0195] In some embodiments, the first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

[0196] In some embodiments, the first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

[0197] In some embodiments, the first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

[0198] In some embodiments, the first information is carried by one or more of the following: a scheduling request, a random access channel.

[0199] In some embodiments, the transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

[0200] In some embodiments, the terminal device further includes: a first receiving module, configured to receive first configuration information sent by the network device, the first configuration information being configured to configure a first resource, the first resource being used by the terminal device to listen to a sequence detection-based PDCCH.

[0201] In some embodiments, the first configuration information is used to configure one or more of the following: the time domain period of the first resource; the time domain position of the first resource in the period; the number of time domain resources corresponding to the sequence detection-based PDCCH; and the format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

[0202] In some embodiments, the time-domain period of the first resource is a slot-level period; and / or, the time-domain position of the first resource in the period includes a slot-level position and / or a symbol-level position.

[0203] In some embodiments, the first configuration information is based on one or more of the following granularities: BWP, carrier.

[0204] In some embodiments, the terminal device further includes: a second receiving module, configured to receive second configuration information sent by the network device, the second configuration information being configured to configure a second resource, the second resource being used by the terminal device to listen to a blind detection-based PDCCH.

[0205] In some embodiments, the second configuration information is used to configure one or more of the following: the time domain period of the second resource; the time domain position of the second resource in the period; the number of time domain resources corresponding to the blind detection-based PDCCH; and the format of the DCI carried in the blind detection-based PDCCH.

[0206] In some embodiments, the time-domain period of the second resource is a slot-level period; and / or, the time-domain position of the second resource in the period includes a slot-level position and / or a symbol-level position.

[0207] In some embodiments, the second configuration information is based on one or more of the following granularities: BWP, carrier.

[0208] In some embodiments, the sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

[0209] In some embodiments, the determining module 1210 and the first listening module 1220 may be a processor 1410. The terminal device 1200 may also include a memory 1420 and a transceiver 1430, as shown in FIG14.

[0210] Figure 13 is a schematic diagram of the network device provided in an embodiment of this application. The network device 1300 shown in Figure 13 includes a determining module 1310 and a first transmitting module 1320. The determining module 1310 can be used to determine the type of the Physical Downlink Control Channel (PDCCH) to be transmitted. The first transmitting module 1320 can be used to transmit the PDCCH to the terminal device based on the determined type of the transmitted PDCCH. The type of PDCCH transmitted by the network device includes one or more of the following: sequence detection-based PDCCH, and blind detection-based PDCCH.

[0211] In some embodiments, the network device further includes: a receiving module, configured to receive first information sent by the terminal device, the first information indicating the type of PDCCH being listened to by the terminal device; and the first sending module, configured to send PDCCH to the terminal device based on the first information.

[0212] In some embodiments, the first information includes a first value and a second value, wherein the type of the PDCCH corresponding to the first value and the second value is different.

[0213] In some embodiments, the network device sending a PDCCH to the terminal device based on the first information includes: if the first information is the first value, the network device sending a PDCCH based on sequence detection to the terminal device; if the first information is the second value, the network device sending a PDCCH based on blind detection to the terminal device.

[0214] In some embodiments, the network device sending a PDCCH to the terminal device based on the first information includes: if the first information is the first value, the network device sending a sequence detection-based PDCCH to the terminal device; if the first information is the second value, the network device sending a sequence detection-based PDCCH and / or a blind detection-based PDCCH to the terminal device.

[0215] In some embodiments, the first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The network device further includes a second sending module, which is used to send a first type of PDCCH for a first duration based on the first value, and then start sending a second type of PDCCH.

[0216] In some embodiments, the first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

[0217] In some embodiments, the first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

[0218] In some embodiments, the first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

[0219] In some embodiments, the first information is carried by one or more of the following: a scheduling request, a random access channel.

[0220] In some embodiments, the transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

[0221] In some embodiments, the network device further includes: a third sending module, configured to send first configuration information to the terminal device, the first configuration information being configured to configure a first resource, the first resource being used by the terminal device to listen to a sequence detection-based PDCCH.

[0222] In some embodiments, the first configuration information is used to configure one or more of the following: the time domain period of the first resource; the time domain position of the first resource in the period; the number of time domain resources corresponding to the sequence detection-based PDCCH; and the format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

[0223] In some embodiments, the time-domain period of the first resource is a slot-level period; and / or, the time-domain position of the first resource in the period includes a slot-level position and / or a symbol-level position.

[0224] In some embodiments, the first configuration information is based on one or more of the following granularities: BWP, carrier.

[0225] In some embodiments, the network device further includes: a fourth sending module, configured to send second configuration information to the terminal device, the second configuration information being configured to configure a second resource, the second resource being used by the terminal device to listen to a blind detection-based PDCCH.

[0226] In some embodiments, the second configuration information is used to configure one or more of the following: the time domain period of the second resource; the time domain position of the second resource in the period; the number of time domain resources corresponding to the blind detection-based PDCCH; and the format of the DCI carried in the blind detection-based PDCCH.

[0227] In some embodiments, the time-domain period of the second resource is a slot-level period; and / or, the time-domain position of the second resource in the period includes a slot-level position and / or a symbol-level position.

[0228] In some embodiments, the second configuration information is based on one or more of the following granularities: BWP, carrier.

[0229] In some embodiments, the sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

[0230] In some embodiments, the determining module 1310 may be a processor 1410, and the first transmitting module 1320 may be a transceiver 1430. The network device 1300 may also include a memory 1420, as shown in FIG14.

[0231] Figure 14 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 14 indicate that the unit or module is optional. This device 1400 can be used to implement the methods described in the above method embodiments. Device 1400 can be a chip, a terminal device, or a network device.

[0232] Apparatus 1400 may include one or more processors 1410. The processor 1410 may support apparatus 1400 in implementing the methods described in the preceding method embodiments. The processor 1410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0233] The apparatus 1400 may further include one or more memories 1420. The memories 1420 store a program that can be executed by the processor 1410, causing the processor 1410 to perform the methods described in the preceding method embodiments. The memories 1420 may be independent of the processor 1410 or integrated within the processor 1410.

[0234] The device 1400 may also include a transceiver 1430. The processor 1410 can communicate with other devices or chips via the transceiver 1430. For example, the processor 1410 can send and receive data with other devices or chips via the transceiver 1430.

[0235] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0236] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0237] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0238] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0239] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0240] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0241] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0242] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".

[0243] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0244] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0245] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0246] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0247] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0248] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0249] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0250] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially 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 this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0251] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device determines the type of the physical downlink control channel (PDCCH) it is monitoring; The terminal device listens to the PDCCH sent by the network device based on the type of the PDCCH being listened to; The type of PDCCH monitored by the terminal device includes one or more of the following: sequence detection-based PDCCH, and blind detection-based PDCCH.

2. The method according to claim 1, characterized in that, The method further includes: The terminal device sends first information to the network device, the first information being used to indicate the type of PDCCH being monitored by the terminal device; The terminal device listens to the PDCCH sent by the network device based on the type of the PDCCH being listened to, including: The terminal device listens to the PDCCH sent by the network device based on the first information.

3. The method according to claim 2, characterized in that, The first information includes a first value and a second value, and the types of PDCCH corresponding to the first value and the second value are different.

4. The method according to claim 3, characterized in that, The terminal device listens to the PDCCH sent by the network device based on the first information, including: If the first information is the first value, the terminal device listens to the PDCCH based on sequence detection. If the first information is the second value, the terminal device listens to the PDCCH based on blind detection.

5. The method according to claim 3, characterized in that, The terminal device listens to the PDCCH sent by the network device based on the first information, including: If the first information is the first value, the terminal device listens to the PDCCH based on sequence detection. If the first information is the second value, the terminal device listens to both the sequence detection-based PDCCH and the blind detection-based PDCCH.

6. The method according to claim 2, characterized in that, The first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The method further includes: After listening to the first type of PDCCH for a first duration based on the first value, the terminal device starts listening to the second type of PDCCH.

7. The method according to claim 6, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

8. The method according to claim 6, characterized in that, The first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

9. The method according to claim 6, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

10. The method according to any one of claims 2-9, characterized in that, The first information is carried by one or more of the following: a scheduling request, or a random access channel.

11. The method according to any one of claims 2-10, characterized in that, The transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: The terminal device receives first configuration information sent by the network device. The first configuration information is used to configure a first resource, and the first resource is used by the terminal device to listen to the PDCCH based on sequence detection.

13. The method according to claim 12, characterized in that, The first configuration information is used to configure one or more of the following: The time-domain period of the first resource; The temporal location of the first resource within the period; The number of time-domain resources corresponding to the sequence detection-based PDCCH; The format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

14. The method according to claim 13, characterized in that: The time-domain period of the first resource is a slot-level period; and / or, The time-domain location of the first resource in the period includes slot-level location and / or symbol-level location.

15. The method according to any one of claims 12-14, characterized in that, The first configuration information is based on one or more of the following granularities: bandwidth portion (BWP), carrier.

16. The method according to any one of claims 1-15, characterized in that, The method further includes: The terminal device receives second configuration information sent by the network device. The second configuration information is used to configure a second resource, and the second resource is used by the terminal device to listen to the PDCCH based on blind detection.

17. The method according to claim 16, characterized in that, The second configuration information is used to configure one or more of the following: The time-domain period of the second resource; The temporal location of the second resource within the period; The number of time-domain resources corresponding to the blind detection-based PDCCH; The format of the DCI carried in the blind detection-based PDCCH.

18. The method according to claim 17, characterized in that: The time-domain period of the second resource is a slot-level period; and / or, The time-domain location of the second resource in the period includes slot-level location and / or symbol-level location.

19. The method according to any one of claims 16-18, characterized in that, The second configuration information is based on one or more of the following granularities: BWP, carrier.

20. The method according to any one of claims 1-19, characterized in that, The sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

21. A method for wireless communication, characterized in that, include: The network device determines the type of Physical Downlink Control Channel (PDCCH) to be transmitted; The network device sends a PDCCH to the terminal device based on the type of the sent PDCCH; The PDCCH sent by the network device includes one or more of the following: sequence detection-based PDCCH, blind detection-based PDCCH.

22. The method according to claim 21, characterized in that, The method further includes: The network device receives first information sent by the terminal device, the first information being used to indicate the type of PDCCH being monitored by the terminal device; The network device sends a PDCCH to the terminal device based on the type of the sent PDCCH, including: The network device sends a PDCCH to the terminal device based on the first information.

23. The method according to claim 22, characterized in that, The first information includes a first value and a second value, and the types of PDCCH corresponding to the first value and the second value are different.

24. The method according to claim 23, characterized in that, The network device sends a PDCCH to the terminal device based on the first information, including: If the first information is the first value, the network device sends a PDCCH based on sequence detection to the terminal device; If the first information is the second value, the network device sends a blind detection-based PDCCH to the terminal device.

25. The method according to claim 23, characterized in that, The network device sends a PDCCH to the terminal device based on the first information, including: If the first information is the first value, the network device sends a PDCCH based on sequence detection to the terminal device; If the first information is the second value, the network device sends a sequence detection-based PDCCH and / or a blind detection-based PDCCH to the terminal device.

26. The method according to claim 22, characterized in that, The first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The method further includes: After the network device sends a first type of PDCCH for a first duration based on the first value, it begins to send a second type of PDCCH.

27. The method according to claim 26, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

28. The method according to claim 26, characterized in that, The first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

29. The method according to claim 26, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

30. The method according to any one of claims 22-29, characterized in that, The first information is carried by one or more of the following: a scheduling request, or a random access channel.

31. The method according to any one of claims 22-30, characterized in that, The transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

32. The method according to any one of claims 21-31, characterized in that, The method further includes: The network device sends first configuration information to the terminal device. The first configuration information is used to configure a first resource. The first resource is used by the terminal device to listen to the PDCCH based on sequence detection.

33. The method according to claim 32, characterized in that, The first configuration information is used to configure one or more of the following: The time-domain period of the first resource; The temporal location of the first resource within the period; The number of time-domain resources corresponding to the sequence detection-based PDCCH; The format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

34. The method according to claim 33, characterized in that: The time-domain period of the first resource is a slot-level period; and / or, The time-domain location of the first resource in the period includes slot-level location and / or symbol-level location.

35. The method according to any one of claims 32-34, characterized in that, The first configuration information is based on one or more of the following granularities: bandwidth portion (BWP), carrier.

36. The method according to any one of claims 21-35, characterized in that, The method further includes: The network device sends second configuration information to the terminal device. The second configuration information is used to configure a second resource, which is used by the terminal device to listen to the PDCCH based on blind detection.

37. The method according to claim 36, characterized in that, The second configuration information is used to configure one or more of the following: The time-domain period of the second resource; The temporal location of the second resource within the period; The number of time-domain resources corresponding to the blind detection-based PDCCH; The format of the DCI carried in the blind detection-based PDCCH.

38. The method according to claim 37, characterized in that: The time-domain period of the second resource is a slot-level period; and / or, The time-domain location of the second resource in the period includes slot-level location and / or symbol-level location.

39. The method according to any one of claims 36-38, characterized in that, The second configuration information is based on one or more of the following granularities: BWP, carrier.

40. The method according to any one of claims 21-39, characterized in that, The sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

41. A terminal device, characterized in that, include: The determination module is used to determine the type of the physical downlink control channel (PDCCH) being monitored; The first listening module is used to listen to the PDCCH sent by the network device based on the type of the PDCCH being listened to; The type of PDCCH monitored by the terminal device includes one or more of the following: sequence detection-based PDCCH, and blind detection-based PDCCH.

42. The terminal device according to claim 41, characterized in that, The terminal device also includes: The sending module is used to send first information to the network device, wherein the first information is used to indicate the type of PDCCH being listened to by the terminal device; The first monitoring module is used to: monitor the PDCCH sent by the network device based on the first information.

43. The terminal device according to claim 42, characterized in that, The first information includes a first value and a second value, and the types of PDCCH corresponding to the first value and the second value are different.

44. The terminal device according to claim 43, characterized in that, The terminal device listens to the PDCCH sent by the network device based on the first information, including: If the first information is the first value, the terminal device listens to the PDCCH based on sequence detection. If the first information is the second value, the terminal device listens to the PDCCH based on blind detection.

45. The terminal device according to claim 43, characterized in that, The terminal device listens to the PDCCH sent by the network device based on the first information, including: If the first information is the first value, the terminal device listens to the PDCCH based on sequence detection. If the first information is the second value, the terminal device listens to both the sequence detection-based PDCCH and the blind detection-based PDCCH.

46. ​​The terminal device according to claim 42, characterized in that, The first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The terminal device further includes: The second monitoring module is used to monitor the first type of PDCCH for a first duration based on the first value, and then start monitoring the second type of PDCCH.

47. The terminal device according to claim 46, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

48. The terminal device according to claim 46, characterized in that, The first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

49. The terminal device according to claim 46, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

50. The terminal device according to any one of claims 42-49, characterized in that, The first information is carried by one or more of the following: a scheduling request, or a random access channel.

51. The terminal device according to any one of claims 42-50, characterized in that, The transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

52. The terminal device according to any one of claims 41-51, characterized in that, The terminal device also includes: The first receiving module is configured to receive first configuration information sent by the network device. The first configuration information is used to configure a first resource, and the first resource is used by the terminal device to listen to the PDCCH based on sequence detection.

53. The terminal device according to claim 52, characterized in that, The first configuration information is used to configure one or more of the following: The time-domain period of the first resource; The temporal location of the first resource within the period; The number of time-domain resources corresponding to the sequence detection-based PDCCH; The format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

54. The terminal device according to claim 53, characterized in that: The time-domain period of the first resource is a slot-level period; and / or, The time-domain location of the first resource in the period includes slot-level location and / or symbol-level location.

55. The terminal device according to any one of claims 52-54, characterized in that, The first configuration information is based on one or more of the following granularities: bandwidth portion (BWP), carrier.

56. The terminal device according to any one of claims 41-55, characterized in that, The terminal device also includes: The second receiving module is used to receive second configuration information sent by the network device. The second configuration information is used to configure a second resource, and the second resource is used by the terminal device to listen to the PDCCH based on blind detection.

57. The terminal device according to claim 56, characterized in that, The second configuration information is used to configure one or more of the following: The time-domain period of the second resource; The temporal location of the second resource within the period; The number of time-domain resources corresponding to the blind detection-based PDCCH; The format of the DCI carried in the blind detection-based PDCCH.

58. The terminal device according to claim 57, characterized in that: The time-domain period of the second resource is a slot-level period; and / or, The time-domain location of the second resource in the period includes slot-level location and / or symbol-level location.

59. The terminal device according to any one of claims 56-58, characterized in that, The second configuration information is based on one or more of the following granularities: BWP, carrier.

60. The terminal device according to any one of claims 41-59, characterized in that, The sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

61. A network device, characterized in that, include: The determination module is used to determine the type of the transmitted Physical Downlink Control Channel (PDCCH). The first sending module is used to send a PDCCH to the terminal device based on the type of the PDCCH being sent; The PDCCH sent by the network device includes one or more of the following: sequence detection-based PDCCH, blind detection-based PDCCH.

62. The network device according to claim 61, characterized in that, The network device also includes: The receiving module is configured to receive first information sent by the terminal device, wherein the first information is used to indicate the type of PDCCH being monitored by the terminal device; The first sending module is used to send a PDCCH to the terminal device based on the first information.

63. The network device according to claim 62, characterized in that, The first information includes a first value and a second value, and the types of PDCCH corresponding to the first value and the second value are different.

64. The network device according to claim 63, characterized in that, The network device sends a PDCCH to the terminal device based on the first information, including: If the first information is the first value, the network device sends a PDCCH based on sequence detection to the terminal device; If the first information is the second value, the network device sends a blind detection-based PDCCH to the terminal device.

65. The network device according to claim 63, characterized in that, The network device sends a PDCCH to the terminal device based on the first information, including: If the first information is the first value, the network device sends a PDCCH based on sequence detection to the terminal device; If the first information is the second value, the network device sends a sequence detection-based PDCCH and / or a blind detection-based PDCCH to the terminal device.

66. The network device according to claim 62, characterized in that, The first information includes a first value, which is used to instruct the terminal device to listen to a first type of PDCCH. The network device further includes: The second sending module is used to send the first type of PDCCH for a first duration based on the first value, and then start sending the second type of PDCCH.

67. The network device according to claim 66, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes blind detection-based PDCCH.

68. The network device according to claim 66, characterized in that, The first type of PDCCH includes blind detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH.

69. The network device according to claim 66, characterized in that, The first type of PDCCH includes sequence detection-based PDCCH, and the second type of PDCCH includes sequence detection-based PDCCH and blind detection-based PDCCH.

70. The network device according to any one of claims 62-69, characterized in that, The first information is carried by one or more of the following: a scheduling request, or a random access channel.

71. The network device according to any one of claims 62-70, characterized in that, The transmission of the first information is determined based on one or more of the following: whether the terminal device needs to enter power-saving mode, and the battery status of the terminal device.

72. The network device according to any one of claims 61-71, characterized in that, The network device also includes: The third sending module is used to send first configuration information to the terminal device. The first configuration information is used to configure a first resource, and the first resource is used by the terminal device to listen to the PDCCH based on sequence detection.

73. The network device according to claim 72, characterized in that, The first configuration information is used to configure one or more of the following: The time-domain period of the first resource; The temporal location of the first resource within the period; The number of time-domain resources corresponding to the sequence detection-based PDCCH; The format of the downlink control information (DCI) carried in the sequence detection-based PDCCH.

74. The network device according to claim 73, characterized in that: The time-domain period of the first resource is a slot-level period; and / or, The time-domain location of the first resource in the period includes slot-level location and / or symbol-level location.

75. The network device according to any one of claims 72-74, characterized in that, The first configuration information is based on one or more of the following granularities: bandwidth portion (BWP), carrier.

76. The network device according to any one of claims 61-75, characterized in that, The network device also includes: The fourth sending module is used to send second configuration information to the terminal device. The second configuration information is used to configure a second resource, and the second resource is used by the terminal device to listen to the PDCCH based on blind detection.

77. The network device according to claim 76, characterized in that, The second configuration information is used to configure one or more of the following: The time-domain period of the second resource; The temporal location of the second resource within the period; The number of time-domain resources corresponding to the blind detection-based PDCCH; The format of the DCI carried in the blind detection-based PDCCH.

78. The network device according to claim 77, characterized in that: The time-domain period of the second resource is a slot-level period; and / or, The time-domain location of the second resource in the period includes slot-level location and / or symbol-level location.

79. The network device according to any one of claims 76-78, characterized in that, The second configuration information is based on one or more of the following granularities: BWP, carrier.

80. The network device according to any one of claims 61-79, characterized in that, The sequence detection-based PDCCH includes a first information field and a second information field. The first information field is used to carry the sequence, and the second information field is used to carry the payload. The detection result of the first information field is used to determine whether the second information field includes the payload of the terminal device.

81. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-20.

82. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 21-40.

83. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1-20 or 21-40.

84. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-20 or 21-40.

85. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-20 or 21-40.

86. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-20 or 21-40.

87. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-20 or 21-40.

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