Physical channel monitoring method and terminal device

Abstract

The application relates to a physical channel monitoring method and a terminal device. The method comprises the following steps: a terminal device is configured with at least one serving cell group, a first serving cell group in the at least one serving cell group corresponds to first information, the terminal device is configured with a periodic channel occupation length on a first serving cell, wherein the periodic channel occupation length comprises a maximum channel occupation length, the maximum channel occupation length is smaller than the periodic channel occupation length, the terminal device performs physical downlink control channel (PDCCH) monitoring on the first serving cell according to second information, and the first serving cell is a serving cell in the first serving cell group; wherein the second information comprises at least one of the periodic channel occupation length, the maximum channel occupation length and the first information. According to the embodiment of the application, the switching behavior of a terminal device on a search space (SS) group of a serving cell in a FBE scene can be determined.

Description

[0001] Cross-references to related applications

[0002] This application is a divisional application of Chinese invention patent application filed on March 26, 2020, with application number 202080093794.4 and invention title "Physical Channel Monitoring Method and Terminal Equipment". Technical Field

[0003] This application relates to the field of communications, specifically to a physical channel monitoring method and terminal equipment. Background Technology

[0004] Typically, communication equipment using unlicensed spectrum must adhere to the "Listen Before Talk (LBT)" principle. This means that before transmitting signals on an unlicensed spectrum channel, the equipment must first perform channel listening. Only if the channel listening result indicates the channel is idle can the equipment transmit signals; if the channel listening result indicates the channel is busy, the equipment cannot transmit signals. From a network deployment perspective, LBT can be divided into two types: load-based equipment (LBE) channel access, also known as dynamic channel occupancy, and frame-based equipment (FBE) channel access, also known as semi-static channel occupancy. In a single transmission, the duration for which a communication device uses an unlicensed spectrum channel for signal transmission cannot exceed the Maximum Channel Occupancy Time (MCOT).

[0005] In the FBE scenario, the channel resources available for service transmission by the communication equipment appear periodically. Specifically, during idle periods, the communication equipment performs channel detection to assess channel availability (also known as idle channel assessment, CCA). If the channel detection is successful, the channel occupancy time (COT) in the next fixed frame period can be used for signal transmission; if the channel detection fails, the channel occupancy time in the next fixed frame period cannot be used for signal transmission.

[0006] In a New Radio-U (NR-U) system operating on unlicensed spectrum, a terminal can be configured with two search space groups (SS groups) on a serving cell. These search space groups are sometimes referred to as search space sets groups (SSS groups) and are used to monitor the Physical Downlink Control Channel (PDCCH).

[0007] In the FBE scenario, how to determine the handover behavior of the terminal in the search space group on the serving cell or in the serving cell group is a problem that needs to be studied. Summary of the Invention

[0008] In view of this, embodiments of this application provide a physical channel monitoring method and a terminal device, which can be used to determine the handover behavior of a terminal in a search space group on a serving cell.

[0009] This application provides a physical channel monitoring method, including:

[0010] The terminal device is configured with a periodic channel occupancy length on a first serving cell, the first serving cell corresponding to first information, wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length;

[0011] The terminal device performs physical downlink control channel (PDCCH) monitoring on the first serving cell based on the second information, wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0012] This application provides a physical channel monitoring method, including:

[0013] The terminal device is configured with at least one serving cell group, wherein the first serving cell group in the at least one serving cell group corresponds to the first information;

[0014] The terminal device is configured with a periodic channel occupancy length on the first serving cell, wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length;

[0015] The terminal device performs physical downlink control channel (PDCCH) monitoring on the first serving cell based on the second information, wherein the first serving cell is a serving cell in the first serving cell group; wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0016] This application embodiment also provides a terminal device, including:

[0017] The physical channel monitoring module is used to monitor the physical downlink control channel (PDCCH) of the first serving cell according to second information when the terminal device is configured with a periodic channel occupancy length on the first serving cell and the first serving cell corresponds to first information; wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length; the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0018] This application embodiment also provides a terminal device, including:

[0019] A physical channel monitoring module is configured to monitor the physical downlink control channel (PDCCH) of the first serving cell according to second information when the terminal device is configured with at least one serving cell group and the first serving cell group in the at least one serving cell group corresponds to first information, and the terminal device is configured with a periodic channel occupancy length on the first serving cell in the first serving cell group; wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0020] This application embodiment also provides a terminal device, including: a processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to perform the physical channel monitoring method as described above.

[0021] This application also provides a chip, including: a processor, configured to call and run a computer program from a memory, causing a device equipped with the chip to perform the physical channel monitoring method as described above.

[0022] This application also provides a computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to perform the physical channel monitoring method described above.

[0023] This application also provides a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the physical channel monitoring method described above.

[0024] This application also provides a computer program that causes a computer to perform the physical channel monitoring method described above.

[0025] This application embodiment considers a terminal device in a serving cell under an FBE scenario (or semi-static channel access mode). If the terminal device is configured with a periodic channel occupancy length on a first serving cell, and the first serving cell corresponds to first information, such as search space handover indication information, then the terminal device can perform PDCCH monitoring on the first serving cell according to second information. The second information may include the periodic channel occupancy length, or the maximum channel occupancy length included in the periodic channel occupancy length, and may also include the first information corresponding to the first serving cell. This enables the determination of the handover behavior of the terminal device in the search space SS group on the first serving cell. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the communication system architecture according to an embodiment of this application.

[0027] Figure 2-5 This is a schematic diagram illustrating the principle and effect of explicit switching of the search space group when the terminal device performs physical channel monitoring.

[0028] Figure 6 This is a flowchart of a physical channel monitoring method according to an embodiment of this application.

[0029] Figure 7 This is a schematic diagram illustrating the principle and effect of the semi-static channel access mode.

[0030] Figure 8 This is a flowchart of a physical channel monitoring method according to another embodiment of this application.

[0031] Figure 9 and 10 This is a schematic structural block diagram of a terminal device according to an embodiment of this application.

[0032] Figure 11 This is a schematic block diagram of a communication device according to an embodiment of this application.

[0033] Figure 12 This is a schematic block diagram of a chip according to an embodiment of this application.

[0034] Figure 13 This is a schematic block diagram of a communication system according to an embodiment of this application. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0036] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-Generation (5G) communication systems, or other communication systems.

[0037] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0038] Optionally, the communication system in this application embodiment can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) network deployment scenario.

[0039] Optionally, the communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum.

[0040] This application describes various embodiments in conjunction with network devices and terminal devices. The terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0041] Terminal devices can be stations (STAION, ST) in WLANs, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in next-generation communication systems such as NR networks, or terminal devices in future evolved Public Land Mobile Network (PLMN) networks, etc.

[0042] In the embodiments of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships); and it can also be deployed in the air (such as airplanes, balloons and satellites).

[0043] In the embodiments of this application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0044] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0045] In the embodiments of this application, the network device can be a device for communicating with mobile devices. The network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, or a vehicle-mounted device, wearable device, or a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0046] By way of example and not limitation, in this embodiment, the network device may have mobility characteristics; for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, or other similar locations.

[0047] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0048] Figure 1 The illustration schematically depicts one network device 1100 and two terminal devices 1200. Optionally, the wireless communication system 1000 may include multiple network devices 1100, and the coverage area of ​​each network device 1100 may include other numbers of terminal devices. This embodiment of the application does not limit this. Optionally, Figure 1 The wireless communication system 1000 shown may also include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), but this application embodiment does not limit this.

[0049] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" is used to describe the relationships between related objects, indicating that there are three possible relationships between them. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the relationship between related objects is "or".

[0050] To clearly illustrate the ideas behind the embodiments of this application, a brief description of the channel access method of FBE in a communication system is first provided. The embodiments of this application include at least some of the following content.

[0051] In this field, in the FBE channel access method, or semi-static channel access mode, the frame structure appears periodically. A frame structure includes a fixed frame period (FFP), a channel occupancy time (COT), and an idle period (IP). The length of the FFP can range from, for example, 1 to 10 ms. The length of the channel occupancy time (COT) does not exceed 95% of the length of the fixed frame period (FFP). The length of the idle period (IP) is at least 5% of the length of the fixed frame period (FFP), and the minimum value of the IP is 100 μs, located at the end of the fixed frame period (FFP).

[0052] On the other hand, in communication systems such as NR-U systems, when configuring a search space (SS) for a UE, the configuration parameters corresponding to the search space can include a search space group identifier (ID) parameter, such as searchSpaceGroupIdList-r16. If the UE is configured with a search space group ID parameter, then this search space group ID parameter can indicate that the search space includes one of the following three cases:

[0053] ① The search space group identifier corresponding to this search space is the first group identifier. For example, this search space corresponds to group 0, or, this search space belongs to group 0;

[0054] ② The search space group identifier corresponding to this search space is the second group identifier. For example, this search space corresponds to group 1, or, this search space belongs to group 1;

[0055] ③ The search space group identifier corresponding to this search space corresponds to both the first group identifier and the second group identifier. For example, this search space corresponds to group 0 and group 1, or the search space belongs to both group 0 and group 1.

[0056] Optionally, the UE can be configured with a search space switching group indication parameter. If the UE is provided with a search space switching group indication parameter, such as searchSpaceSwitchingGroupList-r16, this parameter indicates one or more serving cell groups. For one of these serving cell groups, the UE performs the same SS group switching behavior on all cells in that serving cell group during PDCCH monitoring. Otherwise, if the UE is provided with a search space group ID parameter, the UE performs SS group switching only for the SS group on that serving cell during PDCCH monitoring.

[0057] Optionally, the UE may provide a timer whose value is measured in time slots. For example, after the timer starts, its value is decremented by 1 after each time slot. The timer value can be configured by a higher layer, for example, through the higher-layer parameter searchSpaceSwitchingTimer-r16.

[0058] The UE can switch search space SS groups either explicitly or implicitly.

[0059] Regarding explicit handover, the terminal device can be configured with handover indication signaling in Downlink control information (DCI) format 2_0 to indicate SS group handover. The terminal device can also perform SS group handover based on the indication of the handover indication signaling in the detected DCI format 2_0. Regarding implicit handover, the terminal device can determine whether to switch to, for example, the SS set corresponding to the second group identifier based on whether DCI is detected in, for example, the SS set corresponding to the first group identifier.

[0060] The following is based on Figure 3-6 This section provides a more detailed description of the explicit handover method on a serving cell.

[0061] For a serving cell, if the UE is provided with the location of the search space set of the serving cell's switching domain in DCI format 2_0 by a handover indication signaling such as the higher-layer parameter SearchSpaceSwitchTrigger-r16, and the UE detects DCI format 2_0 in a time slot, then the handover process of the SS group on that serving cell may include at least one of the following:

[0062] 1) This search space set switching domain indicator performs PDCCH monitoring based on the search space set corresponding to the first set of identifiers, refer to... Figure 2 If the UE does not perform PDCCH monitoring based on the search space set corresponding to the first set of identifiers, then starting from the first time slot after at least P symbols following the last symbol of the PDCCH carrying the DCI format 2_0, the UE performs PDCCH monitoring based on the search space set corresponding to the first set of identifiers and stops performing PDCCH monitoring based on the search space set corresponding to the second set of identifiers.

[0063] 2) This search space set switching domain indicator performs PDCCH monitoring based on the search space set corresponding to the second set of identifiers, refer to... Figure 3If the UE does not perform PDCCH monitoring based on the search space set corresponding to the second set of identifiers, then starting from the first time slot after at least P symbols following the last symbol of the PDCCH carrying the DCI format 2_0, the UE performs PDCCH monitoring based on the search space set corresponding to the second set of identifiers and stops performing PDCCH monitoring based on the search space set corresponding to the first set of identifiers.

[0064] 3) After receiving the DCI format 2_0, the UE sets or resets the timer to the value configured by the higher-layer parameter, such as searchSpaceSwitchingTimer-r16.

[0065] 4)Reference Figure 4 and Figure 5 If the UE performs PDCCH monitoring based on the search space set corresponding to the second set of identifiers, then starting from the first time slot after at least P symbols following the time slot corresponding to the time slot when the timer expires, or starting from the first time slot after at least P symbols following the last symbol of the remaining channel occupancy length of the serving cell indicated by DCI format 2_0, the UE performs PDCCH monitoring based on the search space set corresponding to the first set of identifiers and stops performing PDCCH monitoring based on the search space set corresponding to the second set of identifiers.

[0066] Optionally, in 4) above, if there exists a first time slot, for example time slot m, after at least P symbols following the time slot corresponding to the time slot when the timer expires, and a first time slot, for example time slot n, after at least P symbols following the last symbol of the remaining channel occupancy length of the serving cell indicated by DCI format 2_0, then the time slots for which the UE performs PDCCH monitoring according to the search space set corresponding to the first set of identifiers and stops performing PDCCH monitoring according to the search space set corresponding to the second set of identifiers include the first time slot among the aforementioned time slot m and time slot n.

[0067] Optionally, the UE detects the DCI format 2_0 by means of the following: the UE detects the DCI format 2_0 according to the search space set corresponding to the first set of identifiers; the UE detects the DCI format 2_0 according to the search space set corresponding to the second set of identifiers; the UE detects the DCI format 2_0 according to the search space set that does not correspond to either the first or the second set of identifiers; or the UE detects the DCI format 2_0 according to the search space set that corresponds to both the first and the second set of identifiers.

[0068] In the FBE scenario, if the UE is provided with search space handover indication signaling by, for example, higher-layer parameters, how to determine the handover behavior of the terminal in the search space group on the serving cell and in the serving cell group needs to be further clarified and optimized.

[0069] The embodiments of this application will provide solutions for the switching behavior of a terminal in a search space group on a serving cell and the switching behavior of a terminal in a search space group on a serving cell group in the FBE scenario.

[0070] First, this application provides a physical channel monitoring method, referring to... Figure 6 The method includes:

[0071] S101, the terminal device is configured with a periodic channel occupancy length on the first serving cell, the first serving cell corresponds to first information, wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length;

[0072] S102, the terminal device performs physical channel monitoring on the first serving cell according to the second information, wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0073] Optionally, the physical channel includes a control channel. Specifically, the control channel includes a Physical Downlink Control Channel (PDCCH).

[0074] Optionally, the physical channel may include a physical channel transmitted between terminal devices, such as a control channel transmitted between terminal devices; or, the physical channel may include a physical channel transmitted between network devices, such as a control channel transmitted between network devices.

[0075] It should be understood that in this embodiment, physical channel monitoring is illustrated using PDCCH monitoring as an example. If the physical channel to be monitored includes other physical channels, then the PDCCH can be replaced with the corresponding physical channel. This application will not elaborate further on this.

[0076] This application embodiment considers a terminal device in an FBE scenario (or semi-static channel access mode). If the terminal device is configured with a periodic channel occupancy length on a first serving cell, and the first serving cell corresponds to first information, then the terminal device can perform PDCCH monitoring on the first serving cell according to second information. The second information may include the periodic channel occupancy length, the maximum channel occupancy length included in the periodic channel occupancy length, and the first information corresponding to the first serving cell. This enables the determination of the handover behavior of the search space SS group of the terminal device on the first serving cell.

[0077] In embodiments of this application, optionally, the first information may be search space handover indication information. For example, the first information may be search space handover indication information for the first serving cell, or in other words, the first information may be search space handover indication information configured by the network device for the first serving cell. Optionally, the periodic channel occupancy length is the length of the fixed frame period (FFP). Optionally, the maximum channel occupancy length is the length of the maximum channel occupancy time (COT) corresponding to the FFP.

[0078] Before describing in detail the various implementations of the embodiments of this application, a brief description is given of the channel access method (or semi-static channel access mode) of the frame-based device FBE in the NR-U system. The semi-static channel access mode can be indicated by the network device through the System Information Block (SIB1) or configured through higher-layer parameters. Reference... Figure 7 The length T of the fixed frame period FFP x It can be configured on network devices, T x The unit is ms, T x The value range may include, for example, 1, 2, 2.5, 4, 5, 10. In some embodiments, starting from every two consecutive radio frames, within every two consecutive radio frames, according to x·T... x Determine the starting position of the FFP, where, The maximum COT length within the FFP is T. y =0.95T x The idle cycle length within an FFP is at least T. z =max(0.05T) x ,100us).

[0079] Optionally, if a serving cell is configured in semi-static channel access mode, then the periodic channel occupancy length of the serving cell is T. x The maximum channel occupancy length included in the periodic channel occupancy length of this serving cell is T. y The length of the idle period included in the periodic channel occupancy length of this serving cell is T. z Optionally, the terminal device can, according to the configured T x Determine T y and / or T z For example, as described above, the terminal device determines the length T of the FFP. x Then, the starting position of the FFP, the period of the FFP, the maximum COT length used for signal transmission within the FFP, and the idle period used for channel detection within the FFP can be determined according to preset rules.

[0080] It should be understood that, in the embodiments of this application, the serving cell can also be referred to as a cell. The search space can also be referred to as a search space set. The search space group can also be referred to as a search space set group.

[0081] Optionally, in this embodiment of the application, the terminal device performs PDCCH monitoring on the first serving cell, including: the terminal device performs PDCCH monitoring on the downlink active bandwidth part (BWP) of the first serving cell.

[0082] Optionally, in this embodiment, for the first serving cell, the search space SS set configured for the terminal device includes a search space group identifier, including: on the BWP of the first serving cell, the search space SS set configured for the terminal device includes a search space group identifier. Optionally, the SS sets on different BWPs within the same serving cell are configured independently.

[0083] In embodiments of this application, if the terminal device is provided with a search space switching group indication parameter, such as searchSpaceSwitchingGroupList-r16, which indicates one or more serving cell groups, then the terminal device can be considered configured to perform PDCCH monitoring by serving cell group. For the first serving cell group among the one or more serving cell groups, the handover behavior of the SS group on all cells in the first serving cell group can be the same. Optionally, the first serving cell group includes any one of the one or more serving cell groups. Conversely, if the terminal device is not provided with a search space switching group indication parameter, or if the first serving cell of the terminal device does not belong to any serving cell group, then the terminal device can be considered to have the first serving cell configured to perform PDCCH monitoring by serving cell.

[0084] Optionally, a serving cell can be configured to belong to at most one serving cell group. For example, a cell cannot belong to two or more serving cell groups simultaneously. Alternatively, a cell can be configured to belong to one serving cell group or not belong to any serving cell group.

[0085] According to embodiments of this application, in an FBE scenario, firstly, considering a first cell that does not belong to any serving cell group, when the first cell is provided with a search space handover indication signaling (e.g., the higher-layer parameter SearchSpaceSwitchTrigger-r16), the terminal device can perform PDCCH monitoring according to the indication of the handover indication signaling. Here, the handover indication signaling is the handover indication signaling corresponding to the first cell. When the terminal device performs PDCCH monitoring on the first serving cell, it can perform search space group switching through at least one of the following various embodiments.

[0086] Method 1:

[0087] In this embodiment, when a terminal device receives, for example, a first DCI format and first information (e.g., handover indication signaling for a first cell) included in the first DCI format, indicating a first set of identifiers, or in other words, the handover domain of the search space set of the first serving cell provided by the handover indication signaling has a value of 0, it can indicate that the first information indicates a first set of identifiers. Optionally, the first DCI format includes DCI format 2_0.

[0088] If the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers when the first information indicates the first group of identifiers, then starting from the first time slot on the first serving cell, the terminal device will perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers and stop performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers.

[0089] Optionally, in this case, the other group identifiers may include the second group identifier.

[0090] Optionally, the first time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format.

[0091] Method 2:

[0092] In this embodiment of the application, the terminal device detects a first DCI format and the first information included in the first DCI format, such as the handover indication signaling of the first cell, indicates the second set of identifiers. In other words, the handover indication signaling provides a search space set of the first serving cell with a handover domain value of 1, which can indicate that the first information indicates the second set of identifiers.

[0093] If the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the second group of identifiers when the first information indicates the second group of identifiers, then starting from the second time slot on the first serving cell, the terminal device will perform PDCCH monitoring based on the SS set corresponding to the second group of identifiers and stop performing PDCCH monitoring based on the SS sets corresponding to other SS group identifiers.

[0094] Optionally, in this case, the other group identifiers may include the first group identifiers.

[0095] Optionally, the second time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format.

[0096] Method 3:

[0097] In an embodiment of this application, when the first information indicates a second set of identifiers, the terminal device sets the first timer to a first timing value.

[0098] Optionally, if a first DCI format is detected and the first information included in the first DCI format indicates a second set of identifiers, the terminal device sets a first timer to a first timing value in the time slot in which the first DCI format is detected.

[0099] Optionally, the first timing value of the first timer can be configured by a higher layer, for example, through the higher-layer parameter `searchSpaceSwitchingTimer-r16`. The first timing value can be configured to include N time units, such as time slots, where N is a positive integer. Optionally, the first timer can use time slots, symbols, subframes, or sub-time slots (e.g., a sub-time slot includes an integer number of symbols less than 14) as the timing unit. For example, the timing unit for the first timer's value is a time slot. After the first timer is set to a value, its value is decremented by 1 after each time slot.

[0100] Optionally, a first timer can be configured for each serving cell, or a first timer can be configured for each terminal device. For example, the first timer can be the timer corresponding to the first serving cell.

[0101] In some embodiments, if the terminal device performs PDCCH monitoring based on the SS set corresponding to the second set of identifiers, then starting from the third time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers and stops performing PDCCH monitoring based on the SS set corresponding to the second set of identifiers.

[0102] Optionally, the third time slot includes: the first time slot after at least P symbols following the time slot corresponding to the expiration of the first timer.

[0103] In the methods one, two, and three provided above, the first time slot, the second time slot, the third time slot, and the P symbols can be determined based on the first subcarrier interval. Optionally, the first subcarrier interval can be the subcarrier interval corresponding to the first serving cell, the first subcarrier interval can also be a preset subcarrier interval, or the first subcarrier interval can be determined based on the subcarrier interval configuration configured by the network device.

[0104] In some embodiments of this application, the values ​​of the first subcarrier spacing and the P symbols satisfy at least one of the following relationships:

[0105] a) If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ = 0, then P is greater than or equal to 10;

[0106] b) If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ = 1, then P is greater than or equal to 12;

[0107] c) If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ = 2, then P is greater than or equal to 22;

[0108] d) If the first subcarrier spacing is 120 kHz or the first subcarrier spacing is configured as μ = 3, then P is greater than or equal to 25.

[0109] Optionally, at least one of the above situations corresponds to UE capability 1.

[0110] In some embodiments of this application, the values ​​of the first subcarrier spacing and the P symbols satisfy at least one of the following relationships:

[0111] a) If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ = 0, then P is greater than or equal to 5;

[0112] b) If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ = 1, then P is greater than or equal to 5.5;

[0113] c) If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ = 2, then P is greater than or equal to 11.

[0114] Optionally, at least one of the above situations corresponds to UE capability 2.

[0115] Optionally, Method 1, Method 2, and Method 3 above can be applied to the COT in FFP, or Method 1, Method 2, and Method 3 above can be applied to the maximum COT in FFP.

[0116] The above methods one, two, and three describe the process of switching the search space group when the terminal device performs PDCCH monitoring on the first serving cell based on the first information, under the condition that the first information indicates different group identifiers. In addition, the terminal device can also perform PDCCH monitoring on the first serving cell based on the periodic channel occupancy length or the maximum channel occupancy length, and switch the search space group accordingly, which will be described in detail below.

[0117] Method 4:

[0118] In the embodiments of this application, the terminal device performs PDCCH monitoring starting from the beginning symbol of the first period channel occupancy length, based on the SS set corresponding to the default group identifier. Alternatively, the terminal device performs PDCCH monitoring starting from the beginning symbol of the first FFP, based on the SS set corresponding to the default group identifier.

[0119] Optionally, the default group identifier can be a first group identifier (e.g., group 0) or a second group identifier (e.g., group 1); the default group identifier can be preset, configured by the network device, or agreed upon.

[0120] In the embodiments of this application, the first period channel occupancy length can correspond to a fixed frame period (FFP) within any frame structure. Therefore, starting from the beginning of each FFP, the terminal device always performs PDCCH monitoring based on the search space set corresponding to the default SS group (e.g., group 0). For example, if the terminal device performs PDCCH monitoring based on the search space set corresponding to group 1 within an FFP, then at the beginning of the next FFP, the terminal device needs to switch to performing PDCCH monitoring based on the search space set corresponding to the default group 0.

[0121] Method 5:

[0122] In embodiments of this application, the terminal device performs Physical Downlink Control Channel (PDCCH) monitoring on the first serving cell within the channel occupancy period of the first cycle channel occupancy length. Alternatively, the terminal device performs PDCCH monitoring on the first serving cell within the COT period of the first FFP.

[0123] In embodiments of this application, from the last symbol of the channel occupancy in the first cycle channel occupancy length (i.e., from the end of that last symbol) to the beginning symbol of the second cycle channel occupancy length, the terminal device does not perform PDCCH monitoring. Here, the first cycle channel occupancy length and the second cycle channel occupancy length are two consecutive cycle channel occupancy lengths, and the first cycle channel occupancy length precedes the second cycle channel occupancy length in the time domain. Alternatively, from the last symbol of the channel occupancy in the first FFP (i.e., from the end of that last symbol) to the beginning symbol of the second FFP, the terminal device does not perform PDCCH monitoring. Here, the first FFP and the second FFP are two consecutive FFPs, and the first FFP precedes the second FFP in the time domain.

[0124] Optionally, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

[0125] Optionally, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format.

[0126] Optionally, if the first DCI format is received and the first DCI format indicates the remaining channel occupancy length, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format; otherwise, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

[0127] Optionally, if the first DCI format includes slot format indication information (SFI) or channel occupancy time length indication information, the first DCI format indicates the remaining channel occupancy length; otherwise, the first DCI format does not indicate the remaining channel occupancy length.

[0128] In some embodiments of this application, if the first serving cell includes a first SS set, wherein the first SS set includes at least one SS set, and the first SS set does not belong to the SS set corresponding to the first group of identifiers and does not belong to the SS set corresponding to the second group of identifiers, then the terminal device performs PDCCH monitoring based on the first SS set, or the terminal device performs PDCCH monitoring based on the first SS set within the channel occupancy of the first period channel occupancy length.

[0129] In some embodiments of this application, if the first serving cell includes a second SS set, wherein the second SS set includes at least one SS set, and the second SS set belongs to both the SS set corresponding to the first set of identifiers and the SS set corresponding to the second set of identifiers, then the terminal device performs PDCCH monitoring based on the second SS set, or the terminal device performs PDCCH monitoring based on the second SS set within the channel occupancy of the first period channel occupancy length.

[0130] In some embodiments of this application, if the first serving cell includes the SS set corresponding to the first set of identifiers but does not include the SS set corresponding to the second set of identifiers, then the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers; or, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers within the channel occupancy period of the first cycle channel occupancy length.

[0131] As an example, if the first cell is configured in semi-static channel access mode and does not belong to any serving cell group, and the first cell is provided with handover indication signaling, such as the higher-layer parameter SearchSpaceSwitchTrigger-r16, the UE can perform PDCCH monitoring according to the indication of the handover indication signaling. Here, the handover indication signaling is the handover indication signaling corresponding to the first cell. When the UE performs PDCCH monitoring on the first cell, its behavior includes at least one of the following:

[0132] • For at least one search space in the first cell that does not belong to either SS group 0 or SS group 1, the UE needs to perform PDCCH monitoring based on the at least one search space set during the current FFP channel occupancy time.

[0133] • Starting from the beginning of the FFP, the UE performs PDCCH monitoring based on the search space set in the default SS group, such as SS group 0;

[0134] • If the UE receives a handover instruction signaling message and the handover field of the search space set of the serving cell is 0, and if the UE does not perform PDCCH monitoring based on the search space set in SS group 0, then starting from the first time slot after at least P symbols following the last symbol of the PDCCH carrying the DCI format 2_0, the UE performs PDCCH monitoring based on the search space set in SS group 0 and stops performing PDCCH monitoring based on the search space set in SS group 1.

[0135] • If the UE receives a handover instruction signaling message and the handover field of the search space set of the serving cell is set to 1, and if the UE does not perform PDCCH monitoring based on the search space set in SS group 1, then starting from the first time slot after at least P symbols following the last symbol of the PDCCH carrying the DCI format 2_0, the UE performs PDCCH monitoring based on the search space set in SS group 1 and stops performing PDCCH monitoring based on the search space set in SS group 0.

[0136] • If the UE receives a handover indication signaling message and the value of the handover domain of the search space set of the serving cell is 1, the UE sets or resets the first timer to the first timer value after receiving the DCI format 2_0. The first timer value is the value configured by the higher layer parameter, such as searchSpaceSwitchingTimer-r16.

[0137] • If the UE performs PDCCH monitoring based on the search space set in SS group 1, then starting from the first time slot after at least P symbols following the time slot after the first timer expires, the UE performs PDCCH monitoring based on the search space set in SS group 0 and stops performing PDCCH monitoring based on the search space set in SS group 1.

[0138] • From the last symbol of the current FFP's channel occupancy until the start symbol of the next FFP, the UE stops PDCCH monitoring. The last symbol of the current FFP's channel occupancy is determined based on the remaining channel occupancy length indicated in DCI format 2_0 and / or the maximum COT within the FFP. For example, if DCI format 2_0 includes an indication of the remaining channel occupancy length, then the last symbol of the current FFP's channel occupancy includes the last symbol of that remaining channel occupancy length; or, if DCI format 2_0 does not include an indication of the remaining channel occupancy length, then the last symbol of the current FFP's channel occupancy includes the last symbol corresponding to the maximum COT within the FFP.

[0139] The above-described at least one embodiment of this application clarifies the handover behavior of a terminal device in a search space group within a serving cell under an FBE scenario. The following describes the handover process of a terminal device in each serving cell within at least one serving cell group through multiple embodiments.

[0140] refer to Figure 8 This application provides a physical channel monitoring method, which includes:

[0141] S201, the terminal device is configured with at least one serving cell group, and the first serving cell group in the at least one serving cell group corresponds to first information;

[0142] S202, the terminal device is configured with a periodic channel occupancy length on the first serving cell, wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length;

[0143] S203, the terminal device performs physical channel monitoring on the first serving cell according to the second information, wherein the first serving cell is a serving cell in the first serving cell group; wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0144] Optionally, the physical channel includes a control channel. Specifically, the control channel includes a Physical Downlink Control Channel (PDCCH).

[0145] Optionally, the physical channel may include a physical channel transmitted between terminal devices, such as a control channel transmitted between terminal devices; or, the physical channel may include a physical channel transmitted between network devices, such as a control channel transmitted between network devices.

[0146] This application embodiment considers a FBE scenario (or semi-static channel access mode). If a terminal device is configured with at least one serving cell group, and the first serving cell group in this at least one serving cell group corresponds to first information, and the terminal device is configured with a periodic channel occupancy length on the first serving cell in the first serving cell group, then the terminal device can perform PDCCH monitoring on the first serving cell according to second information. The second information may include the periodic channel occupancy length, or the maximum channel occupancy length included in the periodic channel occupancy length, and may also include the first information corresponding to the first serving cell group. Therefore, the handover behavior of the terminal device in the search space SS group on each serving cell in the first serving cell group can be determined.

[0147] For each serving cell in a serving cell group, FBE parameters, such as periodic channel occupancy length, are configured independently for each cell. Optionally, in this embodiment, each serving cell in the first serving cell group is configured with the same periodic channel occupancy length. In this embodiment, the first serving cell group corresponds to the first information; optionally, the first serving cell in the first serving cell group corresponds to the first information.

[0148] Optionally, the first information may be search space switching indication information. For example, the first information may be search space switching indication information for the first serving cell group, or the first information may be search space switching indication information configured by the network device for the first serving cell group.

[0149] When the terminal device of this application performs PDCCH monitoring on the first serving cell in the first serving cell group, it can switch the search space group through at least one of the following multiple embodiments.

[0150] Method 1:

[0151] In this embodiment, when a terminal device receives a first DCI format and the first information included in the first DCI format indicates a first group of identifiers, or when it receives a first DCI format on at least one serving cell in the first serving cell group and the first information included in the first DCI format (e.g., handover indication signaling of the first serving cell group) indicates a first group of identifiers, if the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers, then starting from the first time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first group of identifiers and stops performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers. Optionally, the first DCI format includes DCI format 2_0.

[0152] Optionally, in this case, the other group identifiers may include the second group identifier.

[0153] Optionally, the first time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format.

[0154] Method 2:

[0155] In this embodiment of the application, when a terminal device receives a first DCI format and the first information included in the first DCI format indicates a second group of identifiers, or when it receives a first DCI format and the first information included in the first DCI format indicates a second group of identifiers on at least one serving cell in the first serving cell group, if the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the second group of identifiers, then starting from the second time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the second group of identifiers and stops performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers.

[0156] Optionally, in this case, the other group identifiers may include the first group identifiers.

[0157] Optionally, the second time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format.

[0158] Method 3:

[0159] In this embodiment of the application, when the terminal device receives a first DCI format and the first information included in the first DCI format indicates a second group of identifiers, or when the terminal device receives a first DCI format on at least one serving cell in the first serving cell group and the first information included in the first DCI format indicates a second group of identifiers, the terminal device sets a first timer to a first timer value.

[0160] Optionally, if a first DCI format is detected and the first information included in the first DCI format indicates a second set of identifiers, the terminal device sets a first timer to a first timing value in the time slot in which the first DCI format is detected.

[0161] Optionally, the first timing value of the first timer can be configured by a higher layer, for example, through the higher-layer parameter `searchSpaceSwitchingTimer-r16`. The first timing value can be configured to include N time units, such as time slots, where N is a positive integer. Optionally, the first timer can use time slots, symbols, subframes, or sub-time slots (e.g., a sub-time slot includes an integer number of symbols less than 14) as the timing unit. For example, the timing unit for the first timer's value is a time slot. After the first timer is set to a value, its value is decremented by 1 after each time slot.

[0162] Optionally, a first timer can be configured for each serving cell, each serving cell group, multiple serving cell groups, or each terminal device. For example, the first timer can be the timer corresponding to the first serving cell group.

[0163] In some embodiments, if the terminal device performs PDCCH monitoring based on the SS set corresponding to the second set of identifiers, then starting from the third time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers and stops performing PDCCH monitoring based on the SS set corresponding to the second set of identifiers.

[0164] Optionally, the third time slot includes: the first time slot after at least P symbols following the time slot corresponding to the expiration of the first timer.

[0165] In the above-provided methods 1, 2, and 3, the first time slot, the second time slot, the third time slot, and the P symbols can be determined based on the first subcarrier interval.

[0166] Optionally, the first subcarrier spacing may be the subcarrier spacing corresponding to the first serving cell in the first serving cell group.

[0167] Optionally, the first subcarrier spacing is preset or configured by the network device. For example, the network device may configure the first subcarrier spacing to be 15 kHz, or the first subcarrier spacing may be configured to μ = 0.

[0168] Optionally, the first subcarrier spacing is the smallest subcarrier spacing among the subcarrier spacings corresponding to the serving cells included in the first serving cell group. For example, if the smallest subcarrier spacing among the multiple active BWPs corresponding to multiple cells included in the first serving cell group is 30kHz, then the first subcarrier spacing is 30kHz. Optionally, if a BWP handover occurs in a cell included in the first serving cell group, then the subcarrier spacing corresponding to that cell in the first serving cell group includes the smallest subcarrier spacing before and after the BWP handover; in other words, the first subcarrier spacing is determined based on the smallest subcarrier spacing before and after the BWP handover.

[0169] Optionally, the first subcarrier spacing is the largest subcarrier spacing among the subcarrier spacings corresponding to the serving cells included in the first serving cell group. Optionally, if a BWP handover occurs in a cell included in the first serving cell group, the first subcarrier spacing is determined based on the largest subcarrier spacing before and after the BWP handover.

[0170] Optionally, the first subcarrier spacing is the minimum subcarrier spacing supported on an unlicensed carrier.

[0171] Optionally, the first subcarrier spacing is the maximum subcarrier spacing supported on an unlicensed carrier.

[0172] In some embodiments of this application, the values ​​of the first subcarrier spacing and the P symbols satisfy at least one of the following relationships:

[0173] a) If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ = 0, then P is greater than or equal to 10;

[0174] b) If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ = 1, then P is greater than or equal to 12;

[0175] c) If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ = 2, then P is greater than or equal to 22;

[0176] d) If the first subcarrier spacing is 120 kHz or the first subcarrier spacing is configured as μ = 3, then P is greater than or equal to 25.

[0177] Optionally, at least one of the above situations corresponds to UE capability 1.

[0178] In some embodiments of this application, the values ​​of the first subcarrier spacing and the P symbols satisfy at least one of the following relationships:

[0179] a) If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ = 0, then P is greater than or equal to 5;

[0180] b) If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ = 1, then P is greater than or equal to 5.5;

[0181] c) If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ = 2, then P is greater than or equal to 11.

[0182] Optionally, at least one of the above situations corresponds to UE capability 2.

[0183] Optionally, Method 1, Method 2, and Method 3 above can be applied to the COT in FFP, or Method 1, Method 2, and Method 3 above can be applied to the maximum COT in FFP.

[0184] The above methods one, two, and three describe the process by which the terminal device switches the search space group when performing PDCCH monitoring based on the first information in at least one serving cell in the first serving cell group, under the condition that the first information indicates different group identifiers. In addition, the terminal device can also perform PDCCH monitoring on at least one serving cell in the first serving cell group and switch the search space group based on the periodic channel occupancy length or the maximum channel occupancy length, which will be described in detail below.

[0185] Method 4:

[0186] In the embodiments of this application, the terminal device performs PDCCH monitoring starting from the beginning symbol of the first period channel occupancy length, based on the SS set corresponding to the default SS group identifier. Alternatively, the terminal device performs PDCCH monitoring starting from the beginning symbol of the first FFP, based on the SS set corresponding to the default group identifier.

[0187] Optionally, the default group identifier can be a first group identifier (e.g., group 0) or a second group identifier (e.g., group 1); the default group identifier can be preset, configured by the network device, or agreed upon.

[0188] In the embodiments of this application, the first period channel occupancy length can correspond to a fixed frame period (FFP) within any frame structure. Therefore, starting from the beginning of each FFP, the terminal device always performs PDCCH monitoring based on the search space set corresponding to the default SS group (e.g., group 0). For example, if the terminal device performs PDCCH monitoring based on the search space set corresponding to group 1 within an FFP, then at the beginning of the next FFP, the terminal device needs to switch to performing PDCCH monitoring based on the search space set corresponding to the default group 0.

[0189] Method 5:

[0190] The terminal device performs PDCCH monitoring on the first serving cell within the channel occupancy period of the first cycle channel occupancy length. Alternatively, the terminal device performs Physical Downlink Control Channel (PDCCH) monitoring on the first serving cell within the COT period of the first FFP.

[0191] In embodiments of this application, from the last symbol of the channel occupancy in the first cycle channel occupancy length (i.e., from the end of that last symbol) to the beginning symbol of the second cycle channel occupancy length, the terminal device does not perform PDCCH monitoring. Here, the first cycle channel occupancy length and the second cycle channel occupancy length are two consecutive cycle channel occupancy lengths, and the first cycle channel occupancy length precedes the second cycle channel occupancy length in the time domain. Alternatively, from the last symbol of the channel occupancy in the first FFP (i.e., from the end of that last symbol) to the beginning symbol of the second FFP, the terminal device does not perform PDCCH monitoring. Here, the first FFP and the second FFP are two consecutive FFPs, and the first FFP precedes the second FFP in the time domain.

[0192] Optionally, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

[0193] Optionally, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format.

[0194] Optionally, when the first DCI format is received and the first DCI format indicates the remaining channel occupancy length, or when the first DCI format is received on at least one serving cell in the first serving cell group and the first DCI format indicates the remaining channel occupancy length, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format; otherwise, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

[0195] Optionally, if the first DCI format includes slot format indication information (SFI) or channel occupancy time length indication information, the first DCI format indicates the remaining channel occupancy length; otherwise, the first DCI format does not indicate the remaining channel occupancy length.

[0196] In some embodiments of this application, if the terminal device is configured to monitor the first DCI format corresponding to at least one cell in the first serving cell group, and the terminal device receives at least one remaining channel occupancy length information of at least one cell indicated by the first DCI format, then the terminal device determines the last symbol of the channel occupancy in the first periodic channel occupancy length based on the last symbol of the first remaining channel occupancy length in the at least one remaining channel occupancy length.

[0197] Optionally, the first remaining channel occupancy length is either the remaining channel occupancy length with the latest ending position or the remaining channel occupancy length with the earliest ending position among the at least one remaining channel occupancy lengths.

[0198] In some embodiments of this application, if the first serving cell includes a first SS set, wherein the first SS set includes at least one SS set, and the first SS set does not belong to the SS set corresponding to the first group of identifiers and does not belong to the SS set corresponding to the second group of identifiers, then the terminal device performs PDCCH monitoring based on the first SS set, or the terminal device performs PDCCH monitoring based on the first SS set within the channel occupancy of the first period channel occupancy length.

[0199] In some embodiments of this application, if the first serving cell includes a second SS set, wherein the second SS set includes at least one SS set, and the second SS set belongs to both the SS set corresponding to the first set of identifiers and the SS set corresponding to the second set of identifiers, then the terminal device performs PDCCH monitoring based on the second SS set, or the terminal device performs PDCCH monitoring based on the second SS set within the channel occupancy of the first period channel occupancy length.

[0200] In some embodiments of this application, if the first serving cell includes the SS set corresponding to the first set of identifiers but does not include the SS set corresponding to the second set of identifiers, then the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers; or, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers within the channel occupancy period of the first cycle channel occupancy length.

[0201] Using at least one embodiment of this application, the handover behavior of a terminal device in the FBE scenario in the search space group of at least one serving cell in the serving cell group can be clearly defined.

[0202] The specific settings and implementation methods of the embodiments of this application have been described above from different perspectives through multiple embodiments. Corresponding to the processing method of at least one of the above embodiments, the embodiments of this application also provide a terminal device 100, see reference. Figure 9 It includes:

[0203] The physical channel monitoring module 110 is used to monitor the physical downlink control channel (PDCCH) of the first serving cell according to the second information when the terminal device is configured with a periodic channel occupancy length on the first serving cell and the first serving cell corresponds to the first information.

[0204] The periodic channel occupancy length includes a maximum channel occupancy length, which is less than the periodic channel occupancy length; the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0205] Optionally, in this embodiment of the application, the physical channel monitoring module includes a receiving module and / or a processing module, wherein the receiving module is used to receive candidate PDCCH, and the processing module is used to detect whether the candidate PDCCH includes DCI format.

[0206] Optionally, in this embodiment, the terminal device performs PDCCH monitoring based on the SS set, including: the terminal device performs blind PDCCH detection based on candidate PDCCHs in the SS set, and determines whether the candidate PDCCH includes DCI information based on the blind detection result. If the terminal device detects DCI format on a candidate PDCCH during PDCCH monitoring, the terminal device can consider that the candidate PDCCH includes DCI information; if the terminal device does not detect DCI format on a candidate PDCCH during PDCCH monitoring, the terminal device can consider that the candidate PDCCH does not include DCI information.

[0207] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a first monitoring submodule, configured to, upon receiving a first DCI format and the first information included in the first DCI format indicating a first group of identifiers, and when the terminal device is not performing PDCCH monitoring based on the SS set corresponding to the first group of identifiers, start from the first time slot on the first serving cell to perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers, and stop performing PDCCH monitoring based on the SS set corresponding to other groups of identifiers.

[0208] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a second monitoring submodule, configured to, upon receiving a first DCI format and the first information included in the first DCI format indicating a second group of identifiers, and when the terminal device is not performing PDCCH monitoring based on the SS set corresponding to the second group of identifiers, start from the second time slot on the first serving cell to perform PDCCH monitoring based on the SS set corresponding to the second group of identifiers, and stop performing PDCCH monitoring based on the SS set corresponding to other groups of identifiers.

[0209] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a third monitoring submodule, configured to, when the terminal device performs PDCCH monitoring according to the SS set corresponding to the second set of identifiers, start from the third time slot on the first serving cell, perform PDCCH monitoring according to the SS set corresponding to the first set of identifiers, and stop performing PDCCH monitoring according to the SS set corresponding to the second set of identifiers.

[0210] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a fourth monitoring submodule, used to perform PDCCH monitoring based on the first SS set when the first serving cell includes a first SS set and the first SS set does not belong to the SS set corresponding to the first group of identifiers nor to the SS set corresponding to the second group of identifiers.

[0211] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a fifth monitoring submodule, used to perform PDCCH monitoring starting from the starting symbol in the first period channel occupancy length, according to the SS set corresponding to the default group identifier.

[0212] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a sixth monitoring submodule, used to monitor the physical downlink control channel (PDCCH) of the first serving cell within the channel occupancy period of the first cycle channel occupancy length.

[0213] Optionally, in this embodiment of the application, the physical channel monitoring module 110 includes: a seventh monitoring submodule, used to not perform PDCCH monitoring from the last symbol of the channel occupancy in the first period channel occupancy length to the beginning symbol of the second period channel occupancy length, wherein the first period channel occupancy length and the second period channel occupancy length are two consecutive period channel occupancy lengths, and the first period channel occupancy length is located before the second period channel occupancy length in the time domain.

[0214] Corresponding to the processing method of at least one of the above embodiments, this application also provides a terminal device 200, with reference to... Figure 10 It includes:

[0215] The physical channel monitoring module 210 is used to monitor the physical downlink control channel (PDCCH) of the first serving cell according to the second information when the terminal device is configured with at least one serving cell group and the first serving cell group in the at least one serving cell group corresponds to first information, and the terminal device is configured with a periodic channel occupancy length on the first serving cell in the first serving cell group.

[0216] The second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information.

[0217] The terminal device 100 and terminal device 200 of this application embodiment can realize the corresponding functions described in the foregoing method embodiments. The functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the terminal device 100 and terminal device 200 can be found in the corresponding descriptions in the above method embodiments, and will not be repeated here.

[0218] It should be noted that the functions described in the various modules (sub-modules, units, or components, etc.) of the terminal devices 100 and 200 in the embodiments of the application can be implemented by different modules (sub-modules, units, or components, etc.) or by the same module (sub-module, unit, or component, etc.). For example, the first monitoring sub-module and the second monitoring sub-module can be different modules or the same module, both of which can implement the corresponding functions of the terminal devices in the embodiments of the application.

[0219] Figure 11 This is a schematic structural diagram of a communication device 600 according to an embodiment of the present application, wherein the communication device 600 includes a processor 610, which can call and run computer programs from memory to implement the methods in the embodiments of the present application.

[0220] Optionally, the communication device 600 may further include a memory 620. The processor 610 can retrieve and run computer programs from the memory 620 to implement the methods described in the embodiments of this application.

[0221] The memory 620 can be a separate device independent of the processor 610, or it can be integrated into the processor 610.

[0222] Optionally, the communication device 600 may also include a transceiver 630, which the processor 610 can control to communicate with other devices. Specifically, it can send information or data to other devices or receive information or data sent by other devices.

[0223] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0224] Optionally, the communication device 600 may be a network device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0225] Optionally, the communication device 600 may be a terminal device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0226] Figure 12 This is a schematic structural diagram of a chip 700 according to an embodiment of this application, wherein the chip 700 includes a processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0227] Optionally, chip 700 may further include memory 720. Processor 710 can retrieve and run computer programs from memory 720 to implement the methods described in this embodiment.

[0228] The memory 720 can be a separate device independent of the processor 710, or it can be integrated into the processor 710.

[0229] Optionally, the chip 700 may also include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0230] Optionally, the chip 700 may also include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0231] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0232] Optionally, the chip can be used in this application, such as Figure 9 or Figure 10 The terminal device in the embodiment, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application, will not be described in detail here for the sake of brevity.

[0233] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0234] The processors mentioned above can be general-purpose processors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processors mentioned above can be microprocessors or any conventional processor.

[0235] The aforementioned memory can be volatile memory or non-volatile memory, or a combination of both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM).

[0236] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0237] Figure 13 This is a schematic block diagram of a communication system 800 according to an embodiment of the present application. The communication system 800 includes a terminal device 810 and a network device 820.

[0238] The terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the methods of various embodiments of this application, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the methods of various embodiments of this application. For the sake of brevity, further details are omitted here.

[0239] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions. When these 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 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 accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid state disks (SSDs)).

[0240] It should be understood that in the various embodiments of this application, the sequence number of each process 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. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0241] 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 physical channel monitoring method, applied to a terminal device, the method comprising: The terminal device is configured with at least one serving cell group, wherein the first serving cell group in the at least one serving cell group corresponds to the first information; The terminal device is configured with a periodic channel occupancy length on the first serving cell, wherein the periodic channel occupancy length includes a maximum channel occupancy length, and the maximum channel occupancy length is less than the periodic channel occupancy length; The terminal device performs physical downlink control channel (PDCCH) monitoring on the first serving cell based on the second information, wherein the first serving cell is a serving cell in the first serving cell group; wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information; The terminal device performs PDCCH monitoring on the first serving cell based on the second information, including: Upon receiving a first DCI format and the first information included in the first DCI format indicating a first group of identifiers, if the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers, then starting from the first time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first group of identifiers and stops performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers; wherein, the first time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format; and / or, Upon receiving a first DCI format and the first information included in the first DCI format indicating a second set of identifiers, if the terminal device does not perform PDCCH monitoring based on the SS set corresponding to the second set of identifiers, then starting from the second time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the second set of identifiers and stops performing PDCCH monitoring based on the SS sets corresponding to other sets of identifiers; wherein, the second time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format; The P symbols are determined based on the first subcarrier interval; the first subcarrier interval is the smallest subcarrier interval among the subcarrier intervals corresponding to the serving cells included in the first serving cell group.

2. The method according to claim 1, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: Upon receiving the first DCI format and the first information included in the first DCI format indicating the second group of identifiers, the terminal device sets the first timer to a first timing value.

3. The method according to claim 2, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: If the terminal device performs PDCCH monitoring based on the SS set corresponding to the second set of identifiers, then starting from the third time slot on the first serving cell, the terminal device performs PDCCH monitoring based on the SS set corresponding to the first set of identifiers and stops performing PDCCH monitoring based on the SS set corresponding to the second set of identifiers.

4. The method according to claim 3, wherein, The third time slot includes: the first time slot after at least P symbols following the time slot corresponding to the expiration of the first timer.

5. The method according to any one of claims 1 to 4, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: If the first serving cell includes a first SS set, wherein the first SS set does not belong to the SS set corresponding to the first group of identifiers and does not belong to the SS set corresponding to the second group of identifiers, then the terminal device performs the PDCCH monitoring based on the first SS set.

6. The method according to any one of claims 1 to 4, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: The terminal device starts from the beginning symbol in the first cycle of channel occupancy length and performs PDCCH monitoring according to the SS set corresponding to the default SS group identifier.

7. The method according to claim 6, wherein, The default SS group identifier is either the first group identifier or the second group identifier; And / or, The default SS group identifier is preset or configured by the network device.

8. The method according to claim 1, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: The terminal device performs PDCCH monitoring on the first serving cell within the channel occupancy period of the first cycle channel occupancy length.

9. The method according to claim 1, wherein, The terminal device performs PDCCH monitoring on the first serving cell based on the second information, and further includes: From the last symbol of the channel occupancy in the first cycle channel occupancy length to the beginning symbol of the second cycle channel occupancy length, the terminal device does not perform the PDCCH monitoring, wherein the first cycle channel occupancy length and the second cycle channel occupancy length are two consecutive cycle channel occupancy lengths, and the first cycle channel occupancy length is located before the second cycle channel occupancy length in the time domain.

10. The method according to claim 8 or 9, wherein, The channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length; or, The channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format.

11. The method according to claim 10, wherein, If the first DCI format is received and the first DCI format indicates the remaining channel occupancy length, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format; otherwise, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

12. The method according to claim 10, wherein, If the first DCI format includes Slot Format Indicator (SFI) or Channel Occupancy Time Length Indicator (COTL), the first DCI format indicates the remaining channel occupancy length; otherwise, the first DCI format does not indicate the remaining channel occupancy length.

13. The method according to claim 10, wherein, If the terminal device is configured to monitor the first DCI format corresponding to at least one cell in the first serving cell group, and the terminal device receives at least one remaining channel occupancy length information of at least one cell indicated by the first DCI format, then the terminal device determines the last symbol of the channel occupancy in the first periodic channel occupancy length based on the last symbol of the first remaining channel occupancy length in the at least one remaining channel occupancy length.

14. The method according to claim 13, wherein, The first remaining channel occupancy length is either the remaining channel occupancy length with the latest ending position or the remaining channel occupancy length with the earliest ending position among the at least one remaining channel occupancy lengths.

15. The method according to claim 1, wherein, The first subcarrier spacing is the subcarrier spacing corresponding to the first serving cell; or, The first subcarrier interval is preset; or, The first subcarrier spacing is configured by the network device; or, The first subcarrier spacing is the largest subcarrier spacing among the subcarrier spacings corresponding to the serving cells included in the first serving cell group.

16. The method according to claim 15, wherein, If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ=0, then P is greater than or equal to 10; or, If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ=1, then P is greater than or equal to 12; or, If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ=2, then P is greater than or equal to 22; or, If the first subcarrier spacing is 120 kHz or the first subcarrier spacing is configured as μ=3, then P is greater than or equal to 25.

17. The method according to claim 15, wherein, If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ=0, then P is greater than or equal to 5; or, If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ=1, then P is greater than or equal to 5.5; or, If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ=2, then P is greater than or equal to 11.

18. A terminal device comprising: A physical channel monitoring module is configured to monitor the physical downlink control channel (PDCCH) of the first serving cell according to second information when the terminal device is configured with at least one serving cell group and the first serving cell group in the at least one serving cell group corresponds to first information, and the terminal device is configured with a periodic channel occupancy length on the first serving cell in the first serving cell group; wherein the second information includes at least one of the periodic channel occupancy length, the maximum channel occupancy length, and the first information; The physical channel monitoring module includes: A first monitoring submodule is configured to, upon receiving a first DCI format and the first information included in the first DCI format indicating a first group of identifiers, and when the terminal device is not performing PDCCH monitoring based on the SS set corresponding to the first group of identifiers, start from a first time slot on the first serving cell, perform PDCCH monitoring based on the SS set corresponding to the first group of identifiers, and stop performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers; wherein, the first time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format; and / or, The physical channel monitoring module includes: The second monitoring submodule is configured to, upon receiving a first DCI format and the first information included in the first DCI format indicating a second group of identifiers, and when the terminal device is not performing PDCCH monitoring based on the SS set corresponding to the second group of identifiers, start from a second time slot on the first serving cell to perform PDCCH monitoring based on the SS set corresponding to the second group of identifiers, and stop performing PDCCH monitoring based on the SS sets corresponding to other groups of identifiers; wherein, the second time slot includes: the first time slot after at least P symbols following the last symbol of the PDCCH carrying the first DCI format; The P symbols are determined based on the first subcarrier interval; the first subcarrier interval is the smallest subcarrier interval among the subcarrier intervals corresponding to the serving cells included in the first serving cell group.

19. The terminal device according to claim 18, wherein the physical channel monitoring module further comprises: The timer setting submodule is used to set the first timer to a first timing value when the first DCI format is received and the first information included in the first DCI format indicates the second group of identifiers.

20. The terminal device according to claim 19, wherein, The physical channel monitoring module also includes: The third monitoring submodule is used to perform PDCCH monitoring based on the SS set corresponding to the first set of identifiers starting from the third time slot on the first serving cell when the terminal device performs PDCCH monitoring based on the SS set corresponding to the second set of identifiers, and to stop performing PDCCH monitoring based on the SS set corresponding to the second set of identifiers.

21. The terminal device according to claim 20, wherein, The third time slot includes: the first time slot after at least P symbols following the time slot corresponding to the expiration of the first timer.

22. The terminal device according to any one of claims 18 to 21, wherein, The physical channel monitoring module also includes: The fourth monitoring submodule is used to perform PDCCH monitoring based on the first SS set when the first serving cell includes the first SS set and the first SS set does not belong to the SS set corresponding to the first group of identifiers nor to the SS set corresponding to the second group of identifiers.

23. The terminal device according to any one of claims 18 to 21, wherein the physical channel monitoring module further comprises: The fifth monitoring submodule is used to monitor the PDCCH starting from the first symbol in the first cycle channel occupancy length, according to the SS set corresponding to the default SS group identifier.

24. The terminal device according to claim 23, wherein, The default SS group identifier is either the first group identifier or the second group identifier; And / or, The default SS group identifier is preset or configured by the network device.

25. The terminal device according to claim 18, wherein the physical channel monitoring module further comprises: The sixth monitoring submodule is used to perform PDCCH monitoring on the first serving cell within the channel occupancy period of the first cycle channel occupancy length.

26. The terminal device according to claim 18, wherein the physical channel monitoring module further comprises: The seventh monitoring submodule is used to not perform PDCCH monitoring from the last symbol of the channel occupancy in the first period channel occupancy length to the beginning symbol of the second period channel occupancy length, wherein the first period channel occupancy length and the second period channel occupancy length are two consecutive period channel occupancy lengths, and the first period channel occupancy length is located before the second period channel occupancy length in the time domain.

27. The terminal device according to claim 25 or 26, wherein, The channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length; or, The channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format.

28. The terminal device according to claim 27, wherein, When the physical channel monitoring module receives the first DCI format and the first DCI format indicates the remaining channel occupancy length, the channel occupancy in the first periodic channel occupancy length is determined based on the remaining channel occupancy length indicated in the first DCI format; otherwise, the channel occupancy in the first periodic channel occupancy length is determined based on the maximum channel occupancy length.

29. The terminal device according to claim 27, wherein, If the first DCI format includes Slot Format Indicator (SFI) or Channel Occupancy Time Length Indicator (COTL), the first DCI format indicates the remaining channel occupancy length; otherwise, the first DCI format does not indicate the remaining channel occupancy length.

30. The terminal device according to claim 27, wherein, The channel occupancy determination module is configured to determine the last symbol of the channel occupancy in the first periodic channel occupancy length based on the last symbol of the first remaining channel occupancy length in the at least one remaining channel occupancy length when the terminal device is configured to monitor the first DCI format corresponding to at least one cell in the first serving cell group and the terminal device receives at least one remaining channel occupancy length information of at least one cell indicated by the first DCI format.

31. The terminal device according to claim 30, wherein, The first remaining channel occupancy length is either the remaining channel occupancy length with the latest ending position or the remaining channel occupancy length with the earliest ending position among the at least one remaining channel occupancy lengths.

32. The terminal device according to claim 18, wherein, The first subcarrier spacing is the subcarrier spacing corresponding to the first serving cell; or, The first subcarrier interval is preset; or, The first subcarrier spacing is configured by the network device; or, The first subcarrier spacing is the largest subcarrier spacing among the subcarrier spacings corresponding to the serving cells included in the first serving cell group.

33. The terminal device according to claim 32, wherein, If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ=0, then P is greater than or equal to 10; or, If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ=1, then P is greater than or equal to 12; or, If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ=2, then P is greater than or equal to 22; or, If the first subcarrier spacing is 120 kHz or the first subcarrier spacing is configured as μ=3, then P is greater than or equal to 25.

34. The terminal device according to claim 32, wherein, If the first subcarrier spacing is 15 kHz or the first subcarrier spacing is configured as μ=0, then P is greater than or equal to 5; or, If the first subcarrier spacing is 30 kHz or the first subcarrier spacing is configured as μ=1, then P is greater than or equal to 5.5; or, If the first subcarrier spacing is 60 kHz or the first subcarrier spacing is configured as μ=2, then P is greater than or equal to 11.

35. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor calling and running the computer program stored in the memory to perform the steps of the physical channel monitoring method as described in any one of claims 1 to 17.

36. A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device equipped with the chip to perform the steps of the physical channel monitoring method as described in any one of claims 1 to 17.

37. A computer-readable storage medium for storing a computer program, wherein, The computer program causes the computer to perform the steps of the physical channel monitoring method as described in any one of claims 1 to 17.

38. A computer program product comprising computer program instructions, wherein, The computer program instructions cause the computer to perform the steps of the physical channel monitoring method as described in any one of claims 1 to 17.

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