CN114788378A - Search space group switching method, terminal equipment and network equipment - Google Patents

Abstract

The embodiment of the application relates to a search space group switching method, terminal equipment and network equipment. The method comprises the following steps: when the terminal device is subjected to bandwidth part (BWP) switching, determining a search space group of a Physical Downlink Control Channel (PDCCH) which is blindly detected on activated downlink BWP by the terminal device according to at least one of BWP switching indication signaling, first configuration information and a predefined rule. According to the embodiment of the application, when the BWP switching occurs to the UE, the mode that the UE monitors the search space group can be determined.

Description

Search space group switching method, terminal equipment and network equipment Technical Field

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

The concept of Bandwidth Part (BWP) is defined in New Radio (NR), including downstream BWP and upstream BWP. On one serving cell, a User Equipment (UE) may be configured with a maximum of 4 downlink BWPs, and 4 uplink BWPs. The network may configure two Search Space Set groups (hereinafter, Search Space Set groups may be referred to as SS groups or SS groups) for a certain downlink BWP of the UE, and switch between the two SS groups based on the configuration, or may also be based on an implicit or explicit indication manner. In the prior art, it is uncertain how the UE listens to the SS group when the UE performs BWP handover.

Disclosure of Invention

The embodiment of the application provides a search space group switching method, a terminal device and a communication device, which can determine a mode of monitoring an SS group by a UE when the UE is subjected to BWP switching.

The embodiment of the application provides a search space group switching method, which is applied to terminal equipment and comprises the following steps:

when the terminal equipment generates bandwidth part BWP switching, determining a search space group of a physical downlink control channel PDCCH (physical downlink control channel) which is blindly detected on activated downlink BWP by the terminal equipment according to at least one of BWP switching indication signaling, first configuration information and a predefined rule

The embodiment of the application provides a search space group switching method, which is applied to network equipment and comprises the following steps:

and sending a BWP switching indication signaling, wherein 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.

An embodiment of the present application provides a terminal device, including:

a determining module, configured to determine, when BWP handover occurs in the terminal device, a search space group of a PDCCH for blind detection on an active downlink BWP by the terminal device according to at least one of BWP handover indication signaling, the first configuration information, and a predefined rule.

An embodiment of the present application provides a network device, including:

and the instruction sending module is used for sending a BWP switching indication signaling, and 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.

The embodiment of the application provides a terminal device, which includes: a processor and a memory, the memory being used for storing a computer program, the processor being used for calling and running the computer program stored in the memory to execute the method for switching search space groups as described above.

An embodiment of the present application provides a communication device, including: a processor and a memory, the memory being used for storing a computer program, the processor being used for calling and running the computer program stored in the memory, and executing the method of switching search space groups as described above.

The embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the method for switching the search space group.

The embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the second search space group switching method.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program, where the computer program enables a computer to execute the method for switching the search space group according to the first method.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program, where the computer program enables a computer to execute the method for switching the search space group according to the second embodiment.

An embodiment of the present application provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute the method for switching search space groups as described above.

An embodiment of the present application provides a computer program product, which includes computer program instructions, and the computer program instructions enable a computer to execute the method for switching the second search space group as described above.

An embodiment of the present application provides a computer program, where the computer program enables a computer to execute the method for switching search space groups as described above.

An embodiment of the present application provides a computer program, where the computer program enables a computer to execute the method for switching the search space group according to the second embodiment.

According to the embodiment of the application, the terminal equipment determines that the terminal equipment blindly detects the SS group of the PDCCH on the activated downlink BWP, so that the terminal equipment can blindly detect the PDCCH on the proper SS group when the downlink BWP is switched, and the network and the terminal equipment can have the same understanding on the SS group.

Drawings

Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

Fig. 2 is a flowchart of an implementation of a search space group switching method according to an embodiment of the present application.

Fig. 3 is a flowchart of another implementation of a search space group switching method according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a network device 500 according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application;

fig. 7 is a schematic block diagram of a chip 700 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, Advanced Long Term Evolution (LTE-a) System, New Radio (NR) System, Evolution System of NR System, LTE (LTE-based Access to unlicensed spectrum, LTE-U) System, NR (NR-based Access to unlicensed spectrum), Universal Mobile Telecommunications System (UMTS) System, WLAN-based Wireless Local Area network (WiFi) System, General Packet Radio Service (GPRS) System, and Wireless Local Area Network (WLAN) System, A next Generation communication (5th-Generation, 5G) system, other communication systems, and the like.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, etc., and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum, and may also be applied to an unlicensed spectrum.

The embodiments of the present application are described in conjunction with a network device and a terminal device, where: a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment, etc. The terminal device may be a Station (ST) in a WLAN, and may be 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 function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, and a next generation communication system, for example, a terminal device in an NR Network or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can wear to daily wearing, like glasses, gloves, watch, dress and shoes etc.. The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device has full functions and large size, and can realize complete or partial functions without depending on a smart phone, for example: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB, eNodeB) in LTE, a relay Station or an Access Point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a PLMN network that is evolved in the future.

In this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, wherein the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

Fig. 1 exemplarily shows one network device 110 and two terminal devices 120, and optionally, the wireless communication system 100 may include a plurality of network devices 110, and each network device 110 may include other numbers of terminal devices 120 within the coverage area, which is not limited in this embodiment of the present invention. The embodiment of the present application may be applied to one terminal device 120 and one network device 110, and may also be applied to one terminal device 120 and another terminal device 120.

Optionally, the wireless communication system 100 may further include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

In the prior art, it is uncertain how the UE listens to the SS group when the UE performs BWP handover. For example, the currently active downlink BWP is BWP #1, and when the UE switches from BWP #1 to BWP #2(#1 and #2 may refer to the numbers of BWPs) and BWP #2 has two SS groups configured thereon, the UE blindly detects a Physical Downlink Control Channel (PDCCH) on which SS group, which is not defined at present.

The embodiment of the application provides a search space group switching method which can be applied to terminal equipment. Fig. 2 is a flowchart of an implementation of a search space group switching method according to an embodiment of the present application, including the following steps:

s210: when the terminal device generates the BWP handover, determining a search space group of a Physical Downlink Control Channel (PDCCH) for the terminal device to perform blind detection on the activated Downlink BWP according to at least one of the BWP handover indication signaling, the first configuration information, and a predefined rule.

Optionally, the BWP handover indication signaling includes BWP handover Downlink Control Information (DCI) and/or Radio Resource Control (RRC) handover signaling.

Optionally, the BWP handover indication signaling indicates that the terminal device needs to blind detect the search space group of the PDCCH on the activated downlink BWP.

Optionally, the first configuration information includes an RRC configuration signaling.

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

correspondingly, the terminal device determines a default search space group of the activated downlink BWP of the terminal device according to the first configuration information or the predefined rule, then determines a search space in the default search space group, and performs blind detection on the PDCCH according to the determined search space.

Optionally, before determining that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP according to the BWP handover indication signaling, the method further includes: and determining the search space of the PDCCH for blind detection of the terminal equipment on the activated downlink BWP according to the second configuration information.

Optionally, the second configuration information includes RRC configuration signaling.

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

correspondingly, the terminal equipment determines a default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.

Optionally, in the presence of both the BWP handover indication signaling and the first configuration information, the terminal device determines, according to the BWP handover indication signaling, to blindly detect the search space group of the PDCCH on the activated downlink BWP.

Optionally, in the presence of both the BWP handover indication signaling and the predefined rule, determining, according to the BWP handover indication signaling, that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP.

Optionally, in the presence of both the BWP handover indication signaling and the second configuration information, the terminal device determines, according to the BWP handover indication signaling, to blindly detect the search space group of the PDCCH on the activated downlink BWP.

The present application is described in detail below with reference to specific examples.

The first embodiment is as follows:

the UE is subjected to BWP switching, and the UE receives BWP switching DCI or RRC signaling, wherein the BWP switching DCI or RRC signaling comprises indication information, and the indication information is used for indicating that the UE needs to blindly detect SS groups of the PDCCH on the activated downlink BWP. And the UE adopts the SS group to blindly detect the PDCCH according to the indication information.

For example, the UE switches from BWP #1 to BWP # 2; BWP #2 is configured with 2 SS groups, SS group #1 and SS group # 2. The UE receives BWP switching DCI or RRC signaling, wherein the BWP switching DCI or RRC signaling comprises indication information, and the indication information indicates that the UE needs blind detection of the PDCCH on SS group #1 of BWP # 2. Then, the UE determines the Search Space Set included in SS group #1 of BWP #2 based on the indication information, and blindly detects the PDCCH based on the Search Space Set.

The second embodiment:

the network configures a default SS group, such as SS group #1, for each downlink BWP configured with the SS group through RRC configuration signaling; and when the UE switches the downlink BWP, the UE adopts the default SS group to blindly detect the PDCCH.

For example, BWP #2 is configured with 2 SS groups, SS group #1 and SS group # 2; the network configures SS group #1 as a default SS group for BWP #2 through RRC configuration signaling. Then, when the UE switches from BWP #1 to BWP #2, the UE determines the Search Space Set included in SS group #1 of BWP #2 according to the RRC configuration signaling, and blindly detects the PDCCH according to the Search Space Set.

Further, if the UE receives the BWP handover DCI or the RRC signaling, the UE determines, according to the BWP handover DCI or the RRC signaling, an SS group of the PDCCH on the activated downlink BWP for blind detection; rather than according to the RRC configuration signaling described above.

For example, BWP #2 is configured with 2 SS groups, SS group #1 and SS group # 2; the network configures SS group #1 as a default SS group for BWP #2 through RRC configuration signaling. The UE switches from BWP #1 to BWP #2, and receives BWP handover DCI or RRC signaling, where the BWP handover DCI or RRC signaling includes indication information indicating that the UE needs to blind-detect the PDCCH on SS group #2 of BWP # 2. Then, the UE determines the Search Space Set included in SS group #2 of BWP #2 based on the indication information, and blindly detects the PDCCH based on the Search Space Set.

And (3) implementation three:

the network configures a Search Space Set for each downlink BWP configured with an SS group through an RRC configuration signaling, so that the Search Space Set simultaneously belongs to each SS group of the downlink BWP. This Search Space Set may be referred to as a default Search Space Set.

Thus, if the UE is handed over downlink BWP, the UE at least needs to blindly detect the default Search Space Set on the activated downlink BWP; and until receiving the indication message of the network to indicate the UE to further detect the SS group needing blind detection, the UE detects the PDCCH on the SS group needing blind detection according to the indication message.

For example, BWP #2 is configured with 2 SS groups, SS group #1 and SS group # 2. The network configures 3 Search Space sets for SS group #1 of BWP #2 through RRC configuration signaling, wherein the Set Space sets are respectively Search Space Set #1, Search Space Set #2 and Search Space Set # 3; and 3 Search Space sets are configured for SS group #2 of BWP #2, which are Search Space Set #3, Search Space Set #4 and Search Space Set #5, respectively. As can be seen, the Search Space Set #3 is the default Search Space Set. Then, when the UE switches from BWP #1 to BWP #2, the UE determines the Search Space Set #3 according to the RRC configuration signaling, and blindly detects the PDCCH according to the Search Space Set # 3.

Thereafter, the UE receives an indication message of the network, which indicates the UE to blindly detect the PDCCH on SS group # 1. Then, the UE determines the Search Space Set included in SS group #1 of BWP #2 according to the indication message, and blindly detects the PDCCH according to the Search Space Set.

Further, if the UE receives BWP handover DCI or RRC signaling, the UE determines, according to the BWP handover DCI or RRC signaling, that the activated SS group of the PDCCH is blindly detected on the downlink BWP; rather than according to the RRC configuration signaling described above.

For example, BWP #2 is configured with 2 SS groups, SS group #1 and SS group # 2. The network configures the Search Space Set #3 as the default Search Space Set through RRC configuration signaling, that is, the 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 BWP handover DCI or RRC signaling including indication information indicating that the UE needs to blind detect the PDCCH on SS group #2 of BWP # 2. Then, the UE determines the Search Space Set included in SS group #2 of BWP #2 according to the indication information, and blindly detects the PDCCH according to the Search Space Set.

Example four:

predefining a rule, and configuring default SS group for downlink BWP; when downlink BWP handover occurs, the UE blindly detects the Search Space Set included in the SS group on the activated downlink BWP.

Further, if the UE receives BWP handover DCI or RRC signaling, the UE determines, according to the BWP handover DCI or RRC signaling, that the activated SS group of the PDCCH is blindly detected on the downlink BWP; rather than according to the predefined rules described above.

Or, if the UE receives the RRC configuration signaling, the UE determines, according to the RRC configuration signaling, an SS group of a blind detection PDCCH on the activated downlink BWP; rather than according to the predefined rules described above.

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

the UE receives a downlink BWP switching DCI or an RRC signaling on the currently activated downlink BWP and indicates to switch the currently activated downlink BWP to another downlink BWP; or in a Time Division Duplex (TDD) system, switching of the currently active uplink BWP to another uplink BWP is instructed, and due to TDD system limitations, the downlink BWP is switched to a downlink BWP with the same BWP index (index) as the uplink.

The method comprises the steps that the UE does not configure Random Access Channel (RACH) resources on the currently activated uplink BWP, and the UE triggers an RACH flow to cause the UE to be switched to the initial uplink BWP, and meanwhile, the downlink BWP is also switched to the initial downlink BWP;

the UE configures the RACH resource in the currently active uplink BWP, and triggers the RACH procedure, resulting in the UE switching the downlink BWP to a downlink BWP with the same index as the currently active uplink BWP index.

The UE triggers a persistent uplink listen before talk failure event (persistent UL LBT failure) on the currently active uplink BWP, and the UE switches the uplink BWP to another uplink BWP configured with the RACH resource, resulting in the UE switching the downlink BWP to a downlink BWP having the same index as the currently active uplink BWP index.

An embodiment of the present application provides a further search space group switching method, which may be applied to a network device, and fig. 3 is a flowchart of another implementation method of a search space group switching method according to the embodiment of the present application, including the following steps:

s310: and sending a BWP handover indication signaling, wherein the BWP handover indication signaling indicates that the terminal equipment needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.

Optionally, the method may further include: and 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 blind detection of PDCCH by the terminal equipment on the activated downlink BWP.

Optionally, the method may further include: sending second configuration information, wherein 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 default search space is a search space in which the terminal device blindly detects the PDCCH on the activated downlink BWP.

An embodiment of the present application further provides a terminal device, and fig. 4 is a schematic structural diagram of a terminal device 400 according to an embodiment of the present application, including:

a determining module 410, configured to determine, when BWP handover occurs in a terminal device, a search space group of a PDCCH that is blind detected by the terminal device on an activated downlink BWP according to at least one of BWP handover indication signaling, the first configuration information, and a predefined rule.

Optionally, the BWP handover indication signaling includes BWP handover DCI and/or RRC handover signaling.

Optionally, the BWP handover indication signaling indicates that the terminal device needs to blind-detect the search space group of the PDCCH on the activated downlink BWP.

Optionally, the first configuration information includes RRC configuration signaling.

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

the determining module 410 is configured to determine a default search space group of the activated downlink BWP of the terminal device according to the first configuration information or a predefined rule, determine a search space in the default search space group, and perform blind detection on the PDCCH according to the determined search space.

Optionally, the determining module 410 is further configured to: and determining the search space of the PDCCH for blind detection on the activated downlink BWP by the end equipment according to the second configuration information.

Optionally, the second configuration information includes RRC configuration signaling.

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

the determining module 410 determines a default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.

Optionally, in the case that there is BWP handover indication signaling and the first configuration information at the same time, the determining module 410 determines, according to the BWP handover indication signaling, that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP.

Optionally, in case there are BWP handover indication signaling and predefined rules at the same time, the determining module 410 determines the search space group of the PDCCH that the terminal device blindly detects on the activated downlink BWP according to the BWP handover indication signaling.

Optionally, in the case that there are BWP handover indication signaling and the second configuration information at the same time, the determining module 410 determines, according to the BWP handover indication signaling, that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP.

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 implementing the corresponding processes of the terminal device in the method 200 of fig. 2, and are not described herein again for brevity.

An embodiment of the present application further provides a network device, and fig. 5 is a schematic structural diagram of a network device 500 according to the embodiment of the present application, including:

an instruction sending module 510, configured to send a BWP handover indication signaling, where the BWP handover indication signaling indicates that the terminal device needs to blind detect the search space group of the PDCCH on the activated downlink BWP.

Optionally, as shown in fig. 5, the network device further includes:

a first configuration information sending module 520, configured to send first configuration information, where the first configuration information configures a default search space group for a downlink BWP, and the default search space group is a search space group for a terminal device to blindly detect a PDCCH on an active downlink BWP.

Optionally, as shown in fig. 5, the network device further includes:

a second configuration information sending module 530, 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 simultaneously belongs to each search space group of the downlink BWP; the default search space is a search space in which the terminal device blindly detects the PDCCH on the active downlink BWP.

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 for implementing the corresponding flows of the network device in the method 300 of fig. 3, and are not described herein again for brevity.

Fig. 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 6 comprises a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 6, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, as shown in fig. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the communication device 600 may be a terminal device in this embodiment, and the communication device 600 may implement a corresponding process implemented by the terminal device in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 600 may be a network device according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 7 is a schematic block diagram of a chip 700 according to an embodiment of the present application. The chip 700 shown in fig. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

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 in particular, may obtain information or data transmitted by other devices or chips.

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 in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

The aforementioned processors may 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. The general-purpose processor mentioned above may be a microprocessor, or any conventional processor, etc.

The above-mentioned memories may be either volatile or nonvolatile memories, or may include both volatile and nonvolatile memories. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM).

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may 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. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, 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 computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (38)

1. A search space group switching method is applied to terminal equipment and comprises the following steps:

   when the terminal equipment is subjected to bandwidth part BWP switching, determining a search space group of a physical downlink control channel PDCCH of the terminal equipment on activated downlink BWP in a blind manner according to at least one item of BWP switching indication signaling, first configuration information and a predefined rule.
2. The method according to claim 1, wherein the BWP handover indication signaling comprises BWP handover downlink control information, DCI, and/or radio resource control, RRC, handover signaling.
3. The method according to claim 1 or 2, wherein the BWP handover indication signaling indicates that the terminal device needs to blindly detect a search space group of PDCCH on an active downlink BWP.
4. The method of claim 1, wherein the first configuration information comprises RRC configuration signaling.
5. The method of claim 1 or 4, wherein the first configuration information configures a default search space group for downlink BWP;

   and the terminal equipment determines a default search space group of activated downlink BWP of the terminal equipment according to the first configuration information or the predefined rule, determines a search space in the default search space group, and performs blind detection on PDCCH according to the determined search space.
6. The method according to any one of claims 1 to 4, wherein before determining, according to BWP handover indication signaling, that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP, the method further includes: and determining a search space of the PDCCH for blind detection of the terminal equipment on the activated downlink BWP according to the second configuration information.
7. The method of claim 6, wherein the second configuration information comprises RRC configuration signaling.
8. The method according to claim 6 or 7, wherein the second configuration information configures a default search space for a downlink BWP, the default search space simultaneously belonging to respective search space groups of the downlink BWP;

   and the terminal equipment determines the default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.
9. The method according to any one of claims 1 to 8, wherein the terminal device determines, according to the BWP handover indication signaling, a search space group of a PDCCH for blind detection on an activated downlink BWP when the BWP handover indication signaling and the first configuration information coexist.
10. The method according to any of claims 1 to 8, wherein the terminal device determines, in the presence of the BWP handover indication signaling and the predefined rule, a search space group of the PDCCH on the activated downlink BWP for blind detection according to the BWP handover indication signaling.
11. The method according to any of claims 6 to 8, wherein the terminal device determines, according to the BWP handover indication signaling, a search space group of the PDCCH for blind detection on the activated downlink BWP when the BWP handover indication signaling and the second configuration information coexist.
12. A search space group switching method is applied to network equipment and comprises the following steps:

    and sending a BWP switching indication signaling, wherein 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.
13. The method of claim 12, further comprising:

    and 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 blind detection of PDCCH on the activated downlink BWP by the terminal equipment.
14. The method of claim 12 or 13, further comprising:

    sending second configuration information, wherein the second configuration information configures a default search space for a downlink BWP, and the default search space simultaneously belongs to each search space group of the downlink BWP; the default search space is a search space in which the terminal device blindly detects the PDCCH on the activated downlink BWP.
15. A terminal device, comprising:

    a determining module, configured to determine, when BWP handover occurs in the terminal device, a search space group of a PDCCH that is blindly detected by the terminal device on an activated downlink BWP according to at least one of BWP handover indication signaling, the first configuration information, and a predefined rule.
16. The terminal device of claim 15, wherein the BWP handover indication signaling comprises BWP handover DCI and/or RRC handover signaling.
17. The terminal device according to claim 15 or 16, wherein the BWP handover indication signaling indicates that the terminal device needs to blindly detect a search space group of PDCCH on an active downlink BWP.
18. The terminal device of claim 17, wherein the first configuration information comprises RRC configuration signaling.
19. The terminal device according to claim 15 or 18, wherein the first configuration information configures a default search space group for downlink BWP;

    the determining module is configured to determine a default search space group of the activated downlink BWP of the terminal device according to the first configuration information or the predefined rule, determine a search space in the default search space group, and perform blind PDCCH detection according to the determined search space.
20. The terminal device of any one of claims 15 to 19, wherein the determining module is further configured to: and determining a search space of the PDCCH for blind detection of the terminal equipment on the activated downlink BWP according to the second configuration information.
21. The terminal device of claim 20, wherein the second configuration information comprises RRC configuration signaling.
22. The terminal device according to claim 20 or 21, wherein the second configuration information configures a default search space for a downlink BWP, the default search space simultaneously belonging to each search space group of the downlink BWP;

    and the determining module determines the default searching space according to the second configuration information, and blindly detects the PDCCH according to the default searching space.
23. The terminal device according to any one of claims 15 to 22, wherein the determining module determines, according to the BWP handover indication signaling, that the terminal device blindly detects a search space group of the PDCCH on an activated downlink BWP when the BWP handover indication signaling and the first configuration information coexist.
24. The terminal device according to any of claims 15 to 22, wherein said determining module determines that the terminal device blindly detects a search space group of PDCCH on an active downlink BWP according to the BWP handover indication signaling in case that the BWP handover indication signaling and the predefined rule are both present.
25. The terminal device according to any of claims 20 to 22, wherein the determining module determines, according to the BWP handover indication signaling, that the terminal device blindly detects a search space group of the PDCCH on an activated downlink BWP when the BWP handover indication signaling and the second configuration information coexist.
26. A network device, comprising:

    and the instruction sending module is used for sending a BWP switching indication signaling, and 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.
27. The network device of claim 26, further comprising:

    a first configuration information sending module, configured to send first configuration information, where the first configuration information configures a default search space group for a downlink BWP, and the default search space group is a search space group for a terminal device to blind-detect a PDCCH on an activated downlink BWP.
28. The network device of claim 26 or 27, further comprising:

    a second configuration information sending module, 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 default search space is a search space in which the terminal device blindly detects the PDCCH on the activated downlink BWP.
29. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 11.
30. A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 12 to 14.
31. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 11.
32. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 12 to 14.
33. A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 11.
34. A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 12 to 14.
35. A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 11.
36. A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 12 to 14.
37. A computer program for causing a computer to perform the method of any one of claims 1 to 11.
38. A computer program for causing a computer to perform the method of any one of claims 12 to 14.

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