Search space set switching method, terminal device, and network device

Abstract

Embodiments of the present application relate to a search space group switching method, terminal device, and network device. The method includes: when a bandwidth part (BWP) switching occurs in a terminal device, determining a search space group for blindly detecting a physical downlink control channel (PDCCH) on an activated downlink BWP based on BWP switching indication signaling, first configuration information, and at least one of predefined rules. Embodiments of the present application enable the UE to determine the manner in which it monitors the search space group when a BWP switching occurs in the UE.

Description

Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a search space group switching method, a terminal device, and a network device. Background Art

[0002] The concept of bandwidth part (BWP) is defined in the New Radio (NR), including downlink BWP and uplink BWP. A user equipment (UE) can be configured with up to four downlink BWPs and four uplink BWPs on a serving cell. The network can configure two search space sets (SS groups) for a downlink BWP of the UE and switch between the two SS groups based on configuration, or based on implicit or explicit indication. In the prior art, when a UE undergoes a BWP switch, it is uncertain how the UE monitors the SS groups. Summary of the Invention

[0003] The embodiments of the present application provide a search space group switching method, a terminal device, and a communication device, which can determine the way in which the UE monitors the SS group when a BWP switching occurs in the UE.

[0004] The present application provides a search space group switching method, which is applied to a terminal device and includes:

[0005] When a bandwidth partial BWP switching occurs in a terminal device, the search space group of the terminal device for blind detection of the physical downlink control channel PDCCH on the activated downlink BWP is determined according to at least one of the BWP switching indication signaling, the first configuration information and the predefined rules.

[0006] The present application provides a search space group switching method, which is applied to a network device and includes:

[0007] Send BWP switching indication signaling, where the BWP switching indication signaling indicates the search space group of the PDCCH that the terminal device needs to blindly detect on the activated downlink BWP.

[0008] The present application provides a terminal device, including:

[0009] The determination module is used to determine the search space group for blind detection of PDCCH by the terminal device on the activated downlink BWP according to at least one of the BWP switching indication signaling, the first configuration information and the predefined rules when the terminal device undergoes BWP switching.

[0010] The present application provides a network device, including:

[0011] The instruction sending module is used to send a BWP switching indication signaling, where the BWP switching indication signaling indicates that the terminal equipment needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.

[0012] An embodiment of the present application proposes a terminal device, comprising: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the first search space group switching method as described above.

[0013] An embodiment of the present application proposes a communication device, including: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to perform the second search space group switching method described above.

[0014] An embodiment of the present application provides a chip, comprising: a processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the first search space group switching method described above.

[0015] An embodiment of the present application provides a chip, comprising: a processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the second search space group switching method described above.

[0016] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the first search space group switching method described above.

[0017] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the second search space group switching method described above.

[0018] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the first search space group switching method described above.

[0019] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the second search space group switching method described above.

[0020] An embodiment of the present application provides a computer program, which enables a computer to execute the first search space group switching method described above.

[0021] An embodiment of the present application provides a computer program, which enables a computer to execute the second search space group switching method described above.

[0022] In an embodiment of the present application, the terminal device determines the SS group of the terminal device to blindly detect PDCCH on the activated downlink BWP, so that the terminal device can blindly detect PDCCH on the appropriate SS group when downlink BWP switching occurs, thereby making the network and the terminal device have the same understanding of the SS group. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application.

[0024] Figure 2 This is a flowchart of a search space group switching method according to an embodiment of the present application.

[0025] Figure 3 This is a flowchart of another search space group switching method according to an embodiment of the present application.

[0026] Figure 4 4 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application.

[0027] Figure 5 5 is a schematic diagram of the structure of a network device 500 according to an embodiment of the present application.

[0028] Figure 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application;

[0029] Figure 7 is a schematic structural diagram of a chip 700 according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0031] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of 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, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) system or other communication systems.

[0032] Generally speaking, traditional communication systems 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 communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0033] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0034] The embodiments of the present application are not limited to the spectrum to which they are applied. For example, the embodiments of the present application can be applied to both licensed and unlicensed spectrum.

[0035] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc. The terminal device may be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a next-generation communication system, such as a terminal device in a NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network.

[0036] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0037] A network device may be a device used to communicate with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0038] In an embodiment of the present application, a network device provides services for a cell, and a terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell may be a cell corresponding to a network device (for example, a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, picocells, femtocells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0039] Figure 1 The exemplary embodiment shows one network device 110 and two terminal devices 120. Optionally, the wireless communication system 100 may include multiple network devices 110, and each network device 110 may include another number of terminal devices 120 within its coverage area. This embodiment of the present application is not limited thereto. The embodiment of the present application can be applied to one terminal device 120 and one network device 110, or to one terminal device 120 and another terminal device 120.

[0040] Optionally, the wireless communication system 100 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), which is not limited in the embodiments of the present application.

[0041] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0042] In the prior art, when a UE undergoes a BWP switch, it is undefined how the UE monitors the SS group. For example, if the currently active downlink BWP is BWP#1 and the UE switches from BWP#1 to BWP#2 (#1 and #2 may refer to BWP numbers), and two SS groups are configured on BWP#2, it is currently undefined which SS group the UE uses for blind detection of the Physical Downlink Control Channel (PDCCH).

[0043] An embodiment of the present application proposes a search space group switching method, which can be applied to a terminal device. Figure 2 4 is a flowchart of a method for implementing a search space group switching according to an embodiment of the present application, comprising the following steps:

[0044] S210: When a BWP switch occurs in the terminal device, the search space group for the terminal device to blindly detect the physical downlink control channel (PDCCH) on the activated downlink BWP is determined according to the BWP switch indication signaling, the first configuration information and at least one of the predefined rules.

[0045] Optionally, the BWP switching indication signaling includes BWP switching downlink control information (DCI, Downlink Control Information) and / or radio resource control (RRC, Radio Resource Control) switching signaling.

[0046] Optionally, the BWP switching indication signaling indicates that the terminal device needs to blindly detect the search space group of PDCCH on the activated downlink BWP.

[0047] Optionally, the first configuration information includes RRC configuration signaling.

[0048] Optionally, the first configuration information configures a default search space group for the downlink BWP;

[0049] Accordingly, the terminal device determines the default search space group of the activated downlink BWP of the terminal device according to the first configuration information or the above-mentioned predefined rules, then determines the search space in the default search space group, and then blindly detects the PDCCH according to the determined search space.

[0050] Optionally, before determining the search space group for blindly detecting PDCCH of the terminal device on the activated downlink BWP according to the BWP switching indication signaling, it also includes: determining the search space for blindly detecting PDCCH of the terminal device on the activated downlink BWP according to the second configuration information.

[0051] Optionally, the second configuration information includes RRC configuration signaling.

[0052] Optionally, the second configuration information configures a default search space for the downlink BWP, and the default search space also belongs to each search space group of the downlink BWP;

[0053] Correspondingly, the terminal device determines a default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.

[0054] Optionally, when both the BWP switching indication signaling and the first configuration information exist, the search space group for the terminal device to blindly detect the PDCCH on the activated downlink BWP is determined according to the BWP switching indication signaling.

[0055] Optionally, in the presence of both BWP switching indication signaling and predefined rules, the search space group for the terminal device to blindly detect the PDCCH on the activated downlink BWP is determined according to the BWP switching indication signaling.

[0056] Optionally, when both BWP switching indication signaling and second configuration information exist, the search space group for blind detection of PDCCH by the terminal device on the activated downlink BWP is determined according to the BWP switching indication signaling.

[0057] The present application is described in detail with reference to specific embodiments below.

[0058] Example 1:

[0059] When a BWP switch occurs on the UE, the UE receives a BWP switch DCI or RRC signaling containing indication information indicating the SS group for which the UE needs to blindly detect the PDCCH on the activated downlink BWP. The UE uses the SS group for blind detection of the PDCCH based on the indication information.

[0060] For example, a UE switches from BWP#1 to BWP#2, which is configured with two SS groups: SS group#1 and SS group#2. The UE receives a BWP switching DCI or RRC signaling message containing an indication that the UE needs to blindly detect the PDCCH in SS group#1 of BWP#2. Based on this indication, the UE determines the Search Space Sets included in SS group#1 of BWP#2 and then blindly detects the PDCCH based on these Search Space Sets.

[0061] Example 2:

[0062] The network configures a default SS group, such as SS group #1, for each downlink BWP configured with an SS group through RRC configuration signaling; when the UE switches the downlink BWP, the UE uses the default SS group to blindly detect the PDCCH.

[0063] For example, BWP#2 is configured with two SS groups, SS group#1 and SS group#2. The network configures SS group#1 as the default SS group for BWP#2 through RRC configuration signaling. When the UE switches from BWP#1 to BWP#2, it determines the Search Space Sets included in SS group#1 of BWP#2 based on the RRC configuration signaling and then performs blind detection of the PDCCH based on these Search Space Sets.

[0064] Furthermore, if the UE receives a BWP switching DCI or RRC signaling, the UE determines the SS group for blind detection of the PDCCH on the activated downlink BWP according to the BWP switching DCI or RRC signaling, rather than according to the above RRC configuration signaling.

[0065] For example, BWP#2 is configured with two SS groups, SS group#1 and SS group#2. The network configures SS group#1 as the default SS group for BWP#2 through RRC configuration signaling. The UE switches from BWP#1 to BWP#2 and receives a BWP handover DCI or RRC signaling containing an indication that the UE needs to blindly detect the PDCCH on SS group#2 in BWP#2. Based on this indication, the UE determines the Search Space Sets included in SS group#2 in BWP#2 and then blindly detects the PDCCH based on these Search Space Sets.

[0066] Implementation three:

[0067] The network configures a Search Space Set for each downlink BWP configured with an SS group through RRC configuration signaling, so that the Search Space Set belongs to all SS groups of the downlink BWP at the same time. This Search Space Set can be called the default Search Space Set.

[0068] In this way, if the UE undergoes downlink BWP switching, the UE needs to at least blindly detect the default Search Space Set on the activated downlink BWP; until it receives an indication message from the network indicating that the UE further needs to blindly detect the SS group, the UE blindly detects the PDCCH on the SS group that needs blind detection according to the indication message.

[0069] For example, BWP#2 is configured with two SS groups: SS group#1 and SS group#2. The network configures three Search Space Sets for BWP#2's SS group#1 through RRC configuration signaling: Search Space Set#1, Search Space Set#2, and Search Space Set#3. It also configures three Search Space Sets for BWP#2's SS group#2: Search Space Set#3, Search Space Set#4, and Search Space Set#5. Therefore, Search Space Set#3 is the default Search Space Set described above. Therefore, when the UE switches from BWP#1 to BWP#2, it determines Search Space Set#3 based on the RRC configuration signaling and then blindly detects the PDCCH based on Search Space Set#3.

[0070] Afterwards, the UE receives an indication message from the network, which instructs the UE to blindly detect the PDCCH on SS group #1. Based on the indication message, the UE determines the Search Space Sets included in SS group #1 of BWP #2 and then blindly detects the PDCCH based on these Search Space Sets.

[0071] Furthermore, if the UE receives a BWP switching DCI or RRC signaling, the UE determines the SS group for blind detection of the PDCCH on the activated downlink BWP according to the BWP switching DCI or RRC signaling, rather than according to the above RRC configuration signaling.

[0072] For example, BWP#2 is configured with two SS groups, SS group#1 and SS group#2. The network configures Search Space Set#3 as the default Search Space Set described above through RRC configuration signaling, meaning that Search Space Set#3 belongs to both SS group#1 and SS group#2. The UE switches from BWP#1 to BWP#2, and receives a BWP switching DCI or RRC signaling containing indication information indicating that the UE needs to blindly detect the PDCCH on SS group#2 of BWP#2. Based on this indication information, the UE determines the Search Space Sets contained in SS group#2 of BWP#2 and then blindly detects the PDCCH based on these Search Space Sets.

[0073] Example 4:

[0074] A rule is predefined, and the predefined rule configures a default SS group for the downlink BWP; when a downlink BWP switching occurs, the UE blindly detects the Search Space Set included in the SS group on the activated downlink BWP.

[0075] Furthermore, if the UE receives a BWP switching DCI or RRC signaling, the UE determines the SS group for blind detection of the PDCCH on the activated downlink BWP according to the BWP switching DCI or RRC signaling, instead of determining according to the above predefined rules.

[0076] Alternatively, if the UE receives the RRC configuration signaling, the UE determines the SS group for blind detection of the PDCCH on the activated downlink BWP according to the RRC configuration signaling, instead of determining according to the above predefined rule.

[0077] The BWP switching in the above embodiments may include the following scenarios:

[0078] The UE receives a BWP switching DCI or RRC signaling on the currently activated downlink BWP, indicating that the currently activated downlink BWP is switched to another downlink BWP; or in a time division duplex (TDD) system, indicating that the currently activated uplink BWP is switched to another uplink BWP. At the same time, due to TDD system limitations, the downlink BWP is also switched to a downlink BWP with the same BWP index as the uplink.

[0079] The UE does not have a random access channel (RACH) resource configured on the currently activated uplink BWP, and the UE triggers a RACH procedure, causing the UE to switch to the initial uplink BWP and the downlink BWP to also switch to the initial downlink BWP;

[0080] The UE configures RACH resources in the currently activated uplink BWP, and the UE triggers the RACH process, which causes the UE to switch the downlink BWP to a downlink BWP with the same index as the currently activated uplink BWP index.

[0081] The UE triggers a consistent ULLBT failure on the currently active uplink BWP. The UE switches the uplink BWP to another uplink BWP configured with RACH resources, causing the UE to switch the downlink BWP to a downlink BWP with the same index as the currently active uplink BWP.

[0082] The embodiment of the present application also proposes a search space group switching method, which can be applied to network devices. Figure 3 FIG. 5 is a flowchart of another method for implementing a search space group switching method according to an embodiment of the present application, comprising the following steps:

[0083] S310: Send BWP switching indication signaling, where the BWP switching indication signaling indicates the terminal device needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.

[0084] Optionally, the above method may further include: sending first configuration information, wherein the first configuration information configures a default search space group for the downlink BWP, and the default search space group is a search space group for the terminal device to blindly detect the PDCCH on the activated downlink BWP.

[0085] Optionally, the above method may also include: sending second configuration information, which configures a default search space for the downlink BWP, and the default search space also belongs to each search space group of the downlink BWP; the default search space is the search space for the terminal device to blindly detect PDCCH on the activated downlink BWP.

[0086] The embodiment of the present application also provides a terminal device, Figure 4 4 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application, including:

[0087] The determination module 410 is used to determine the search space group for blind detection of PDCCH by the terminal device on the activated downlink BWP according to at least one of the BWP switching indication signaling, the first configuration information and the predefined rules when the terminal device undergoes BWP switching.

[0088] Optionally, the BWP switching indication signaling includes BWP switching DCI and / or RRC switching signaling.

[0089] Optionally, the BWP switching indication signaling indicates that the terminal device needs to blindly detect the search space group of PDCCH on the activated downlink BWP.

[0090] Optionally, the first configuration information includes RRC configuration signaling.

[0091] Optionally, the first configuration information configures a default search space group for the downlink BWP;

[0092] The above-mentioned determination module 410 is used to determine the default search space group of the activated downlink BWP of the terminal device according to the first configuration information or predefined rules, determine the search space in the default search space group, and blindly detect PDCCH according to the determined search space.

[0093] Optionally, the determination module 410 is further configured to: determine, according to the second configuration information, a search space for blind detection of the PDCCH by the end device on the activated downlink BWP.

[0094] Optionally, the second configuration information includes RRC configuration signaling.

[0095] Optionally, the second configuration information configures a default search space for the downlink BWP, where the default search space also belongs to each search space group of the downlink BWP;

[0096] The determination module 410 determines a default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.

[0097] Optionally, when both the BWP switching indication signaling and the first configuration information exist, the determination module 410 determines the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP according to the BWP switching indication signaling.

[0098] Optionally, in the presence of both BWP switching indication signaling and predefined rules, the determination module 410 determines, according to the BWP switching indication signaling, a search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP.

[0099] Optionally, when both the BWP switching indication signaling and the second configuration information exist, the determination module 410 determines the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP according to the BWP switching indication signaling.

[0100] It should be understood that the above and other operations and / or functions of the modules in the terminal device according to the embodiment of the present application are respectively for realizing Figure 2The corresponding process of the terminal device in the method 200 is not repeated here for the sake of brevity.

[0101] The embodiment of the present application also provides a network device, Figure 5 5 is a schematic diagram of the structure of a network device 500 according to an embodiment of the present application, including:

[0102] The instruction sending module 510 is used to send a BWP switching indication signaling, where the BWP switching indication signaling indicates that the terminal equipment needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.

[0103] Alternatively, as Figure 5 As shown, the above network equipment also includes:

[0104] The first configuration information sending module 520 is used to send first configuration information. The first configuration information configures a default search space group for the downlink BWP. The default search space group is the search space group used by the terminal device to blindly detect the PDCCH on the activated downlink BWP.

[0105] Alternatively, as Figure 5 As shown, the above network equipment also includes:

[0106] The second configuration information sending module 530 is used to send the second configuration information, which configures a default search space for the downlink BWP. The default search space also belongs to each search space group of the downlink BWP; the default search space is the search space for the terminal device to blindly detect the PDCCH on the activated downlink BWP.

[0107] It should be understood that the above and other operations and / or functions of the modules in the network device according to the embodiment of the present application are respectively to implement Figure 3 For the sake of brevity, the corresponding process of the network device in the method 300 is not repeated here.

[0108] Figure 6 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. Figure 6 The communication device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0109] Alternatively, as Figure 6 As shown, the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0110] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0111] Alternatively, as Figure 6 As shown, the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0112] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0113] Optionally, the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0114] Optionally, the communication device 600 may be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0115] Figure 7 is a schematic structural diagram of a chip 700 according to an embodiment of the present application. Figure 7 The chip 700 shown includes a processor 710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0116] Alternatively, as Figure 7 As shown, the chip 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0117] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0118] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0119] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0120] Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0121] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0122] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0123] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0124] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0125] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present 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 RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0126] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0127] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0128] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0129] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A search space group switching method, applied to a terminal device, comprising: When a bandwidth partial BWP switching occurs in the terminal device, determining, according to the second configuration information, a search space for the terminal device to blindly detect a physical downlink control channel (PDCCH) on the activated downlink BWP; wherein the second configuration information includes radio resource control (RRC) configuration signaling; the second configuration information configures a default search space for the downlink BWP, and the default search space simultaneously belongs to each search space group of the downlink BWP; the terminal device determines the default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space; Afterwards, receiving a BWP switching indication signaling, and determining, according to the BWP switching indication signaling, a search space group for blind detection of a PDCCH by the terminal device on the activated downlink BWP; The BWP switching indication signaling includes BWP switching downlink control information DCI and RRC switching signaling; the BWP switching indication signaling indicates the search space group of the PDCCH that the terminal device needs to blindly detect on the activated downlink BWP; In the case where the BWP switching indication signaling and the second configuration information exist at the same time, the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP is determined according to the BWP switching indication signaling.

2. A search space group switching method, applied to a network device, comprising: Sending second configuration information, where the second configuration information configures a default search space for a downlink BWP, and the default search space belongs to each search space group of the downlink BWP at the same time; the second configuration information includes RRC configuration signaling; the terminal device determines the default search space according to the second configuration information when a BWP switching occurs, and the default search space is a search space for the terminal device to blindly detect the PDCCH on the activated downlink BWP, and blindly detects the PDCCH according to the default search space; and Sending BWP switching indication signaling, where the BWP switching indication signaling indicates that the terminal device needs to blindly detect the search space group of the PDCCH on the activated downlink BWP; wherein the BWP switching indication signaling includes BWP switching DCI and RRC switching signaling; In the case where the BWP switching indication signaling and the second configuration information exist at the same time, the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP is determined according to the BWP switching indication signaling.

3. A terminal device, comprising: A determination module is configured to determine, when a BWP switching occurs in the terminal device, a search space for blind detection of the PDCCH by the terminal device on the activated downlink BWP according to second configuration information; wherein the second configuration information includes RRC configuration signaling; the second configuration information configures a default search space for the downlink BWP, and the default search space belongs to each search space group of the downlink BWP at the same time; the determination module determines the default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space; The determining module is further configured to: subsequently receive a BWP switching indication signaling, and determine, according to the BWP switching indication signaling, a search space group for blind detection of a PDCCH by the terminal device on an activated downlink BWP; The BWP switching indication signaling includes a BWP switching DCI and an RRC switching signaling; the BWP switching indication signaling indicates a search space group of a PDCCH that the terminal device needs to blindly detect on the activated downlink BWP; In the case where the BWP switching indication signaling and the second configuration information exist at the same time, the determination module determines the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP according to the BWP switching indication signaling.

4. A network device comprising: A second configuration information sending module is configured to send second configuration information, where the second configuration information configures a default search space for a downlink BWP, and the default search space belongs to each search space group of the downlink BWP at the same time; the second configuration information includes RRC configuration signaling; the terminal device determines the default search space according to the second configuration information when a BWP switching occurs, the default search space is a search space for the terminal device to blindly detect a PDCCH on an activated downlink BWP, and the PDCCH is blindly detected according to the default search space; as well as An instruction sending module, configured to send a BWP switching indication signaling, wherein the BWP switching indication signaling indicates that the terminal device needs to blindly detect the search space group of the PDCCH on the activated downlink BWP; The BWP switching indication signaling includes BWP switching DCI and RRC switching signaling; In the case where the BWP switching indication signaling and the second configuration information exist at the same time, the search space group for blind detection of the PDCCH by the terminal device on the activated downlink BWP is determined according to the BWP switching indication signaling.

5. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to claim 1.

6. A communication device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to claim 2.

7. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to claim 1.

8. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to claim 2.

9. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to claim 1.

10. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to claim 2.

11. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method according to claim 1.

12. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method according to claim 2.

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