CN113950115A

CN113950115A - inter-RAT cell reselection method and terminal equipment

Info

Publication number: CN113950115A
Application number: CN202010682335.1A
Authority: CN
Inventors: 张艳霞
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-01-18

Abstract

The application discloses an inter-RAT cell reselection method and terminal equipment, and belongs to the field of communication. The inter-RAT cell reselection method comprises the following steps: in the process of executing cell reselection between Radio Access Technologies (RAT), if the cell type of a first cell is not matched with the cell type which is allowed to be accessed by the terminal equipment, the first cell is forbidden or determined as an inaccessible cell; wherein the first cell comprises a best cell or a highest ranked cell. According to the embodiment of the application, the processing behavior of the terminal equipment on the first cell is determined, so that the subsequent cell reselection processing behavior of the terminal equipment can be determined at least while the cell which is not matched with the cell type allowed to be accessed by the terminal is not considered as the candidate cell for cell reselection, and the communication efficiency of the system is improved.

Description

inter-RAT cell reselection method and terminal equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method for inter-RAT cell reselection and a terminal device.

Background

In R16, a Non-Public Network (NPN) is introduced into a New Radio (NR) system, so as to provide a Local Area Network (LAN) type private communication service for the vertical industry through a 5G communication Network, thereby meeting the communication requirements of the vertical industry.

At least two NPN deployment modes can be adopted to support communication applications in the vertical industry, one is independent NPN (stand alone NPN, SNPN) deployment that does not depend on a Public network, and the other is non-independent NPN (Public network integrated NPN, PNI-NPN) deployment that depends on a Public network.

At present, after the introduction of the NPN into the NR, a plurality of different types of User Equipment (UE) and a plurality of different types of cells coexist in an existing network. Within a certain geographic area, cells with multiple Radio Access Technologies (RATs) may be deployed for network coverage, for example, Long Term Evolution (LTE) Radio Access Technology and NR Radio Access Technology are deployed simultaneously, and then, for a UE with multiple Radio Access capabilities, different types of cells in LTE and NR may be detected simultaneously. In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: when inter-RAT cell reselection is performed, the processing behavior of the UE on a certain type or certain types of cells is not yet clear, which affects the accuracy of cell reselection and thus the system communication efficiency.

Disclosure of Invention

An object of the embodiments of the present application is to provide an inter-RAT cell reselection method and a terminal device, so as to solve the problem that when performing inter-RAT cell reselection, a processing behavior of a UE on a certain type or certain types of cells is ambiguous.

In a first aspect, an embodiment of the present application provides an inter-RAT cell reselection method, which is applied to a terminal device, and the method includes:

in the process of executing cell reselection between Radio Access Technologies (RAT), if the cell type of a first cell is not matched with the cell type which is allowed to be accessed by the terminal equipment, the first cell is forbidden or determined as an inaccessible cell; wherein the first cell comprises a best cell or a highest ranked cell.

In a second aspect, an embodiment of the present application provides a terminal device, where the terminal device includes:

a processing module, configured to, in a process of performing cell reselection between Radio Access Technologies (RATs), disable a first cell or determine the first cell as an inaccessible cell if a cell type of the first cell does not match a cell type that the terminal device is allowed to access; wherein the first cell comprises a best cell or a highest ranked cell.

In a third aspect, an embodiment of the present application provides a terminal device, including: a memory, a processor and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.

In this embodiment, in the process of performing cell reselection between different radio access technologies, RAT, when it is determined that a cell type of a certain specific cell, that is, a first cell, does not match a cell type that the terminal device is allowed to access, the terminal device may perform an operation of disabling the first cell or perform an operation of determining the first cell as a cell that is not accessible. The cell type of the first cell is not matched with the cell type allowed to be accessed by the terminal equipment, which can be understood as that the cell type allowed to be accessed by the terminal equipment does not include the cell type of the first cell; the first cell may include at least a best cell or a highest ranked cell, which may refer to a best quality of service cell. In this way, by determining the processing behavior of the terminal device on the first cell, the processing behavior of the terminal device for the subsequent cell reselection can be determined at least while the cell that is not matched with the cell type that the terminal device is allowed to access is not considered as a candidate cell for cell reselection, thereby improving the communication efficiency of the system.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a flowchart illustrating an inter-RAT cell reselection method according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a terminal device in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a second terminal device in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The technical scheme of the application can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution/enhanced Long Term Evolution (LTE-a), NR, and the like.

User Equipments (UEs), which may be Terminal equipments such as Mobile phones (or "cellular" phones) and computers with Terminal equipments such as portable, pocket, hand-held, computer-included or vehicle-mounted Mobile devices, exchange languages and/or data with a Radio Access Network (RAN), may also be referred to as Terminal equipments (Mobile terminals), Mobile user equipments, etc., and may communicate with one or more core networks via the RAN.

The network device, which may also be referred to as a Base Station, may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB or e-NodeB) in LTE, and a 5G Base Station (gNB).

In this embodiment of the present application, for a network deployed in the SNPN manner, the UE may identify whether a cell provides SNPN access through a non-public network identifier (e.g., SNPN ID) provided by the network side. For the UE with SNPN access capability, the UE may operate in an SNPN mode or a Public Land Mobile Network (PLMN) mode. When the UE operates in the SNPN mode, the network can only be accessed through the SNPN. When operating in PLMN mode, access to the network is only possible through the PLMN.

For the scenario of deploying the network in the PNI-NPN manner, a Closed Access Group (CAG) concept is introduced to control the UE to Access a specific cell. Enabling access

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present application provides an inter-RAT cell reselection method, which is performed by a terminal device, where the terminal device is a terminal device with multiple radio access capabilities, and is capable of detecting multiple cells belonging to different RAT types at the same time. The inter-RAT cell reselection method may include the following steps:

step 101: in the process of executing cell reselection between Radio Access Technologies (RAT), if the cell type of a first cell is not matched with the cell type which is allowed to be accessed by the terminal equipment, the first cell is forbidden or determined as an inaccessible cell; wherein the first cell comprises a best cell or a highest ranked cell.

In one example, in an inter-RAT cell reselection process, if a cell type of a best cell or a highest-ranked cell does not match a cell type that a terminal is allowed to access, the terminal device does not use the best cell or the highest-ranked cell as a candidate cell for cell reselection. Further, the terminal device needs to continuously select a cell that can be a candidate cell for cell reselection, and it is clear that whether the terminal device performs intra-frequency reselection or inter-frequency reselection.

In addition, it should be noted that the inter-RAT cell reselection method provided in the embodiment of the present application is not applicable to a terminal device in a service-limited state.

Optionally, in the inter-RAT cell reselection method according to the embodiment of the present application, the cell type allowed to be accessed by the terminal device may be determined based on at least one of the following:

(1) configuration of the network device.

(2) Selecting the terminal equipment; that is, the type of cell that the terminal device is allowed to access may be selected by itself. For example, for a UE with SNPN access capability, a cell capable of providing PLMN access may be selected as a cell type allowed to be accessed, or a cell capable of providing SNPN access may be selected as a cell type allowed to be accessed.

Optionally, in the inter-RAT cell reselection method according to the embodiment of the present application, a valid duration of the operation of disabling the first cell may also be obtained, where the valid duration of the operation may be a duration specified by a protocol (i.e., predefined) or a duration configured by a network device.

Optionally, in the inter-RAT cell reselection method according to the embodiment of the present application, after disabling the first cell or determining the first cell as an inaccessible cell, the terminal device may further perform at least one of the following operations on content related to the first cell or based on the content related to the first cell:

(1) forbidding a frequency point corresponding to the first cell; therefore, all cells on the frequency point corresponding to the first cell can be forbidden, so that the purpose of reducing co-channel interference in the cell reselection process is achieved.

Further optionally, in the inter-RAT cell reselection method according to the embodiment of the present application, an effective duration of the operation of disabling the frequency point corresponding to the first cell may also be obtained, where the effective duration of the operation may be a duration specified by a protocol (that is, predefined) or a duration configured by a network device.

(2) Determining the frequency point corresponding to the first cell as an inaccessible frequency point; therefore, all cells on the frequency point corresponding to the first cell can be determined as inaccessible cells, so as to achieve the purpose of reducing co-channel interference in the cell reselection process.

(3) Forbidding a second cell on the frequency point corresponding to the first cell, wherein the second cell is different from the first cell; in this way, the purpose of reducing co-channel interference in the cell reselection process may be achieved by disabling other cells, that is, second cells, on the frequency point corresponding to the first cell, where the disabled second cells may include one or more cells different from the first cell on the frequency point corresponding to the first cell, and may specifically be specified by a protocol.

Further optionally, in the inter-RAT cell reselection method according to the embodiment of the present application, an effective duration of the operation of disabling the second cell on the frequency point corresponding to the first cell may also be obtained, where the effective duration of the operation may be a duration specified by a protocol (that is, predefined) or a duration configured by the network device.

(4) Determining the second cell on the frequency point corresponding to the first cell as an inaccessible cell; therefore, other cells on the frequency point corresponding to the first cell, namely the second cell, can be determined as inaccessible cells, so as to achieve the purpose of reducing co-channel interference in the cell reselection process.

(5) Determining the frequency point corresponding to the first cell as a frequency point with low priority when the inter-RAT cell is reselected; therefore, when the cell reselection is carried out, the cell on the frequency point corresponding to the cell which is not matched with the cell type allowed to be accessed by the terminal equipment is prevented from being preferentially selected for access.

(6) Performing cell reselection according to the same-frequency reselection indication carried by the first cell; that is to say, it may be specifically determined to perform intra-frequency cell reselection or inter-frequency cell reselection according to the intra-frequency reselection indication carried by the first cell.

Optionally, in the inter-RAT cell reselection method according to this embodiment of the present application, for a case that a serving cell of a terminal device and the first cell respectively correspond to different radio access technologies RATs, a mismatch between a cell type of the first cell and a cell type that the terminal device is allowed to access may also correspond to different cases, including but not limited to the following specific embodiments:

detailed description of the preferred embodiment

In a first embodiment of the present invention, a serving cell of the terminal device belongs to a cell corresponding to a first radio access technology, and the first cell belongs to a cell corresponding to a second radio access technology. At this time, the mismatch between the cell type of the first cell and the cell type allowed to be accessed by the terminal device includes at least one of the following cases:

(1) the cell types allowed to be accessed by the terminal equipment are a cell providing public land mobile network PLMN access and a cell providing closed access group CAG access, the cell type of the first cell is a cell providing only independent non-public network SNPN access or a cell providing first CAG access, and the first CAG is not intersected with a second CAG allowed to be accessed by the terminal equipment. It can be understood that, when the cell type allowed to be accessed by the terminal device and the cell type of the first cell respectively correspond to and satisfy the above conditions, the two cells may be considered to be mismatched.

In one example, if the UE is a CAG UE, the UE is camping on a cell corresponding to a first radio access technology, the first cell is a best cell and is a cell corresponding to a second radio access technology and having a cell type of SNPN only (i.e. a cell providing only SNPN access), the cell type of the best cell is considered not to be matched with a cell type allowed to be accessed by the UE.

In another example, if the UE type is a CAG UE, the UE is camping on a cell corresponding to a first radio access technology, the first cell is a best cell and corresponds to a second radio access technology, and the cell type is a cell of a non-CAG member cell of the UE (e.g. if a closed access group of which a cell 1 supports access and a closed access group of which the UE allows access do not intersect, then this cell 1 is a non-CAG member cell of the UE), the cell type of the best cell is considered not to match the cell type of which the UE allows access.

(2) The cell type allowed to be accessed by the terminal equipment is a cell providing PLMN access, and the cell type of the first cell is a cell only providing SNPN access or a cell only providing CAG access. It can be understood that, when the cell type allowed to be accessed by the terminal device and the cell type of the first cell respectively correspond to and satisfy the above conditions, the two cells may be considered to be mismatched.

In one example, if the UE type is a SNPN access capable UE operating in a PLMN mode, and the UE is camping on a cell corresponding to a first radio access technology, where the first cell is a best cell and corresponds to a second radio access technology, and the cell type is SNPN only, the cell type of the best cell is considered not to match the cell type allowed to be accessed by the UE.

In another example, if the UE type is a UE operating in a PLMN mode and having SNPN access capability, and the UE is camping on a cell corresponding to a first radio access technology, where the first cell is a best cell and corresponds to a second radio access technology, and the cell type is CAG only (i.e. refers to a cell providing CAG access only), the cell type of the best cell is considered to be not matched with the cell type allowed to be accessed by the UE.

Detailed description of the invention

In a second embodiment, the serving cell of the terminal device belongs to a cell corresponding to a second radio access technology, and the first cell belongs to a cell corresponding to a first radio access technology. At this time, the mismatch between the cell type of the first cell and the cell type allowed to be accessed by the terminal device includes at least one of the following cases:

(1) the cell type allowed to be accessed by the terminal device is a cell providing PLMN access and a cell providing CAG access, and the cell type of the first cell is a cell providing Closed Subscriber Group (CSG) access. It is understood that, when the cell type allowed to be accessed by the terminal device and the cell type of the first cell satisfy the above condition, the two cells may be considered not to match each other.

In an example, if the UE type is CAG UE, the UE is camping on a cell corresponding to a second radio access technology, and the first cell is a best cell and is a cell corresponding to a first radio access technology and having a cell type of a CSG cell (for example, a cell providing only CSG access), it is considered that the cell type of the best cell is not matched with a cell type allowed to be accessed by the UE.

(2) The cell type allowed to be accessed by the terminal equipment is a cell only providing PLMN access, and the cell type of the first cell is a cell providing CSG access. It can be understood that, when the cell type allowed to be accessed by the terminal device and the cell type of the first cell respectively correspond to and satisfy the above conditions, the two cells may be considered to be mismatched.

In an example, if the UE type is a UE operating in a PLMN mode and having SNPN access capability, and the UE is camping on a cell corresponding to a second radio access technology, and the first cell is a best cell and corresponds to a first radio access technology, and the cell type is a CSG cell, the cell type of the best cell is considered to be not matched with the cell type allowed to be accessed by the UE.

Optionally, for the specific embodiments of the first radio access reception and the second radio access technology described in the above specific embodiments one and two, the method may include: the first radio access technology comprises an evolved long term evolution radio access technology (i.e., EUTRAN RAT), and the second radio access technology comprises a new air interface radio access technology (i.e., NR RAT).

Referring to fig. 2, an embodiment of the present application provides a terminal device 200, where the terminal device 200 includes:

a processing module 201, configured to, in a process of performing cell reselection between radio access technologies, RAT, disable a first cell or determine the first cell as an inaccessible cell if a cell type of the first cell does not match a cell type that the terminal device is allowed to access; wherein the first cell comprises a best cell or a highest ranked cell.

Optionally, in the terminal device 200 in this embodiment of the present application, when a serving cell of the terminal device belongs to a cell corresponding to a first radio access technology, and the first cell belongs to a cell corresponding to a second radio access technology, at least one of the following situations is included when a cell type of the first cell does not match a cell type that the terminal device is allowed to access:

the cell types allowed to be accessed by the terminal equipment are a cell providing Public Land Mobile Network (PLMN) access and a cell providing Closed Access Group (CAG) access, the cell type of the first cell is a cell providing only independent non-public network (SNPN) access or a cell providing first CAG access, and the first CAG is not intersected with the first CAG allowed to be accessed by the terminal equipment; the cell type allowed to be accessed by the terminal equipment is a cell providing PLMN access, and the cell type of the first cell is a cell only providing SNPN access or a cell only providing CAG access.

Optionally, in the terminal device 200 in this embodiment of the application, when a serving cell of the terminal device belongs to a cell corresponding to a second radio access technology, and the first cell belongs to a cell corresponding to a first radio access technology, at least one of the following situations is included when a cell type of the first cell does not match a cell type that the terminal device is allowed to access:

the cell types allowed to be accessed by the terminal equipment are a cell providing PLMN access and a cell providing CAG access, and the cell type of the first cell is a cell providing closed authorization group (CSG) access; the cell type allowed to be accessed by the terminal equipment is a cell only providing PLMN access, and the cell type of the first cell is a cell providing CSG access.

Optionally, in the terminal device 200 in this embodiment of the application, the first radio access technology includes an evolved long term evolution radio access technology, and the second radio access technology includes a new air interface radio access technology.

Optionally, in the terminal device 200 according to the embodiment of the present application, the processing module 201 is further configured to perform one of the following operations:

forbidding a frequency point corresponding to the first cell; determining the frequency point corresponding to the first cell as an inaccessible frequency point; forbidding a second cell on the frequency point corresponding to the first cell, wherein the second cell is different from the first cell; determining the second cell on the frequency point corresponding to the first cell as an inaccessible cell; determining the frequency point corresponding to the first cell as a frequency point with low priority when the inter-RAT cell is reselected; and reselecting the cell according to the same-frequency reselection indication carried by the first cell.

Optionally, in the terminal device 200 according to the embodiment of the present application, an effective duration corresponding to at least one of the following operations is specified by a protocol or configured by a network device:

disabling the first cell; forbidding a frequency point corresponding to the first cell; and forbidding the second cell on the frequency point corresponding to the first cell.

Optionally, in the terminal device 200 according to the embodiment of the present application, the cell type allowed to be accessed by the terminal device is determined based on one of the following: configuration of the network device; and selecting the terminal equipment.

It can be understood that the terminal device 200 provided in the embodiment of the present application can implement the foregoing inter-RAT cell reselection method performed by the terminal device 200, and the relevant descriptions about the inter-RAT cell reselection method are all applicable to the terminal device 200, and are not described herein again.

Fig. 3 is a block diagram of a terminal device according to another embodiment of the present application. The terminal device 300 shown in fig. 3 includes: at least one processor 301, memory 302, at least one network interface 304, and a user interface 303. The various components in the terminal device 300 are coupled together by a bus system 305. It will be appreciated that the bus system 305 is used to enable communications among the components connected. The bus system 305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 305 in fig. 3.

The user interface 303 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It will be appreciated that the memory 302 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. 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), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 302 of the systems and methods described in embodiments herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 302 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 3021 and application programs 3022.

The operating system 3021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 3022 include various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program for implementing the method according to the embodiment of the present application may be included in the application program 3022.

In this embodiment of the present application, the terminal device 300 further includes: a program or instructions stored on the memory 302 and executable on the processor 301, which program or instructions when executed by the processor 301 performs the steps of:

The method disclosed in the embodiment of the present application may be applied to the processor 301, or implemented by the processor 301. The processor 301 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 301. The Processor 301 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 301, performs the steps of the above-described inter-RAT cell reselection method embodiments.

It is to be understood that the embodiments described in connection with the embodiments disclosed herein may be implemented by hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this application may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this application. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 300 can implement each process implemented by the terminal device in the foregoing embodiments, and details are not described here to avoid repetition.

Preferably, an embodiment of the present application further provides a terminal device, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction, when executed by the processor, implements each process of the inter-RAT cell reselection method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when executed by a processor, the program or the instruction implements each process of the inter-RAT cell reselection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the terminal device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An inter-RAT cell reselection method is applied to a terminal device, and is characterized in that the method comprises the following steps:

in the process of executing cell reselection between Radio Access Technologies (RAT), if the cell type of a first cell is not matched with the cell type which is allowed to be accessed by the terminal equipment, the first cell is forbidden or determined as an inaccessible cell;

wherein the first cell comprises a best cell or a highest ranked cell.

2. The method of claim 1, wherein in a case that a serving cell of the terminal device belongs to a cell corresponding to a first radio access technology and the first cell belongs to a cell corresponding to a second radio access technology, the cell type of the first cell does not match a cell type that the terminal device is allowed to access, and the method comprises at least one of:

the cell types allowed to be accessed by the terminal equipment are a cell providing Public Land Mobile Network (PLMN) access and a cell providing Closed Access Group (CAG) access, the cell type of the first cell is a cell providing only independent non-public network (SNPN) access or a cell providing first CAG access, and the first CAG is not intersected with a second CAG allowed to be accessed by the terminal equipment;

the cell type allowed to be accessed by the terminal equipment is a cell providing PLMN access, and the cell type of the first cell is a cell only providing SNPN access or a cell only providing CAG access.

3. The method according to claim 1, wherein in a case that the serving cell of the terminal device belongs to a cell corresponding to a second radio access technology and the first cell belongs to a cell corresponding to a first radio access technology, the cell type of the first cell does not match the cell type allowed to be accessed by the terminal device includes at least one of:

the cell types allowed to be accessed by the terminal equipment are a cell providing PLMN access and a cell providing CAG access, and the cell type of the first cell is a cell providing closed authorization group (CSG) access;

the cell type allowed to be accessed by the terminal equipment is a cell only providing PLMN access, and the cell type of the first cell is a cell providing CSG access.

4. The method of claim 2 or 3, wherein the first radio access technology comprises an evolved long term evolution radio access technology and the second radio access technology comprises a new air interface radio access technology.

5. The method of claim 1, further comprising performing one of:

forbidding a frequency point corresponding to the first cell;

determining the frequency point corresponding to the first cell as an inaccessible frequency point;

forbidding a second cell on the frequency point corresponding to the first cell, wherein the second cell is different from the first cell;

determining the second cell on the frequency point corresponding to the first cell as an inaccessible cell;

determining the frequency point corresponding to the first cell as a frequency point with low priority when the inter-RAT cell is reselected;

and reselecting the cell according to the same-frequency reselection indication carried by the first cell.

6. The method of claim 5, wherein the validity duration for at least one of the following operations is specified by a protocol or configured by the network device:

disabling the first cell;

forbidding a frequency point corresponding to the first cell;

and forbidding the second cell on the frequency point corresponding to the first cell.

7. The method of claim 1, wherein the cell type that the terminal device is allowed to access is determined based on one of:

configuration of the network device;

and selecting the terminal equipment.

8. A terminal device, comprising:

a processing module, configured to, in a process of performing cell reselection between Radio Access Technologies (RATs), disable a first cell or determine the first cell as an inaccessible cell if a cell type of the first cell does not match a cell type that the terminal device is allowed to access;

wherein the first cell comprises a best cell or a highest ranked cell.

9. The terminal device according to claim 8, wherein in a case that a serving cell of the terminal device belongs to a cell corresponding to a first radio access technology and the first cell belongs to a cell corresponding to a second radio access technology, the mismatch between the cell type of the first cell and the cell type allowed to be accessed by the terminal device comprises at least one of:

10. The terminal device according to claim 8, wherein in a case that a serving cell of the terminal device belongs to a cell corresponding to a second radio access technology and the first cell belongs to a cell corresponding to a first radio access technology, the mismatch between the cell type of the first cell and the cell type allowed to be accessed by the terminal device comprises at least one of:

11. The terminal device according to claim 9 or 10, wherein the first radio access technology comprises an evolved long term evolution radio access technology, and the second radio access technology comprises a new air interface radio access technology.

12. The terminal device of claim 8, wherein the processing module is further configured to perform one of the following:

forbidding a frequency point corresponding to the first cell;

13. The terminal device of claim 12, wherein the validity duration corresponding to at least one of the following operations is specified by a protocol or configured by the network device:

disabling the first cell;

forbidding a frequency point corresponding to the first cell;

14. The terminal device of claim 8, wherein the cell type that the terminal device is allowed to access is determined based on one of:

configuration of the network device;

and selecting the terminal equipment.

15. A terminal device, comprising: memory, a processor and a program or instructions stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of any one of claims 1 to 7.

16. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 7.