METHOD AND USER EQUIPMENT FOR CELL (RE)SELECTION

Abstract

A method and User Equipment (UE) are provided for cell (re)selection. The method includes: receiving an intrafrequency reselection indicator in a Master Information Block (MIB) of a cell at a specified frequency; determining whether the cell belongs to a network to which the UE is registered; determining other cells at the specified frequency as restricted cells that the UE cannot select in an intrafrequency cell reselection, in a case where the cell belongs to the network and the intrafrequency reselection indicator is set to a first value indicating that intrafrequency cell reselection is not permitted; and performing the intrafrequency cell reselection to the other cells at the specified frequency, in a case where the cell does not belong to the network or the intrafrequency reselection indicator is set to a second value indicating that intrafrequency cell reselection is permitted.

Description

METHOD AND USER EQUIPMENT FOR CELL (RE)SELECTION Field of Invention This description refers in general to wireless communication and, more specifically, to a method and user equipment (UE) for performing cell (re)selection in the next generation wireless communication network. Background of the Invention With the enormous growth in the number of connected devices and the rapid increase in user / network traffic volume, several efforts have been made to improve different aspects of wireless communication for the next generation wireless communication system, such as the Fifth Generation New Radio (5G), by improving data speed, latency, reliability, and mobility. The 5G NR system is designed to provide flexibility and configurability to optimize services and network types, adapting to various use cases such as Enhanced Mobile Broadband (eMBB), Mass Machine-Type Communication (mMTC), and Ultra-Reliable Low-Latency Communication (URLLC). However, as the demand for radio access continues to increase, there is a need for improvements. QPfrZ Ln / Zznz / E / YIAI Ref. 335228 additional in wireless communication for the next generation wireless communication system. Brief Description of the Invention This description refers to a method and a UE for cell (re)selection. According to one aspect of the present description, a method implemented by a UE for cell reselection is provided.The method includes: receiving an intra-frequency reselection indicator in a Master Information Block (MIB) of a cell at a specified frequency; determining whether the cell belongs to a network to which the UE is registered; determining other cells at the specified frequency as restricted cells that the UE cannot select in an intra-frequency cell reselection, in a case where the cell belongs to the network and the intra-frequency reselection indicator is set to a first value indicating that the intra-frequency cell reselection is not allowed; and performing the intra-frequency cell reselection to the other cells at the specified frequency, in a case where the cell does not belong to the network or the intra-frequency reselection indicator is set to a second value indicating that the intra-frequency cell reselection is allowed. In accordance with another aspect of this description, a UE for cell reselection is provided. The UE includes QQfrZ ίη / ZZΖΠZ / Β / YΙΛΙ consists of a transceiver, a processor coupled to the transceiver, and a memory coupled to the processor. The transceiver is configured to receive an intrafrequency reselection indicator in one MIB of a cell at a specific frequency.The memory stores at least one computer-executable program that, when executed by the processor, causes the processor to: determine if the cell belongs to a network to which the UE is registered; determine other cells at the specified frequency as restricted cells that the UE cannot select in an intrafrequency cell reselection, in a case where the cell belongs to the network and the intrafrequency reselection indicator is set to a first value indicating that intrafrequency cell reselection is not permitted; and perform the intrafrequency cell reselection to the other cells at the specified frequency, in a case where the cell does not belong to the network or the intrafrequency reselection indicator is set to a second value indicating that intrafrequency cell reselection is permitted. Brief Description of the Figures The aspects of the example description are best understood from the following detailed description when read in conjunction with the accompanying figures. Several features are not drawn to scale. The dimensions of various features may be arbitrarily increased or decreased for clarity of analysis. Figure 1A shows the states and state transitions and procedures for a UE according to an implementation of the present description. Figure IB shows the states, state transitions, and procedures for a UE according to an implementation of the present description. Figure 2 illustrates a flowchart for a method performed by a UE for cell (re)selection, according to an implementation of the present description. Figure 3 illustrates a flowchart for an intrafrequency cell reselection method according to an implementation of the present description. Figure 4 illustrates a flowchart for a method of a UE that enters the selection state of any cell according to an implementation of the present description. Figure 5 is a schematic diagram illustrating cells at the same frequency and different frequencies. Figure 6 is a block diagram illustrating a node for wireless communication according to an implementation of the present description. Detailed Description of the Invention The following contains specific information related to implementations of this description. The figures and their accompanying detailed descriptions refer to QPfr7 ίΠ / ZZΖηZ / E / YΙΛΙ merely refers to implementations. However, the present description is not limited to these implementations. Other variations and implementations of the present description will be evident to those skilled in the art. Unless otherwise indicated, similar or corresponding elements between figures may be indicated by similar or corresponding reference numbers. Furthermore, the figures and illustrations in this description are generally not to scale and are not intended to correspond to actual relative dimensions. For the sake of consistency and ease of understanding, similar features (although not illustrated in some examples) can be identified by the same numbers in the figures. However, features in different implementations may differ in other aspects and should not be strictly limited to what is illustrated in the figures. The phrases "in an implementation" or "in some implementations" may each refer to one or more of the same or different implementations. The term "coupled" is defined as connected either directly or indirectly through intermediate components and is not necessarily limited to physical connections. The term "comprising" means that it includes, but is not necessarily limited to, components and specifically indicates inclusion or open membership in the combination. QPfrZ ίη / ZZΖΠZ / E / YΙΛΙ group, series or equivalent described. The expression at least one of A, B and C or at least one of the following: A, B and C means only A, or only B, or only C, or any combination of A, B and C The terms system and network can be used interchangeably. The term and / or is simply an association relation to describe associated objects and represents that three relationships can exist: A and / or B can indicate that A exists alone, A and B exist simultaneously, or B exists alone. A and / or B and / or C can represent that at least one of A, B, and C exists. The character / generally represents that the associated objects are in an "or" relationship. For explanatory purposes, and not to limit the scope of the information, specific details such as functional entities, techniques, protocols, standards, and the like are provided to facilitate understanding of the described technology. In other instances, detailed descriptions of well-known methods, technologies, systems, architectures, and the like are omitted to avoid complicating this description with unnecessary detail. Those skilled in the field will immediately recognize that any network function or algorithm described can be implemented using hardware, software, or a combination of both. The functions described may correspond to modules that can be software, hardware, firmware, or any combination thereof. A software implementation may include computer-executable instructions stored on a computer-readable medium such as memory or other storage devices. One or more microprocessors or general-purpose computers with communication processing capabilities may be programmed with corresponding computer-executable instructions and perform the described network functions or algorithms. Microprocessors or general-purpose computers may include application-specific integrated circuits (ASICs), programmable logic arrays, and / or use one or more digital signal processors (DSPs). Although some of the implementations described are geared toward software installed and running on computer hardware, alternative implementations implemented as firmware, as hardware, or as a combination of hardware and software are within the scope of this description. Computer-readable media may include, but is not limited to, random-access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, and other memory. QPfrZ ίη / ZZΖΠZ / E / YΙΛΙ read-only compact disc (CD-ROM), magnetic cassettes, magnetic tape, magnetic disk storage or any other equivalent medium capable of storing computer-readable instructions. A radio communication network architecture such as a Long-Term Evolution (LTE) system, an LTE-A Advanced (LTE-A) system, an LTE-Pro Advanced system, or a 5G NR Radio Access Network (RAN) can typically include at least one base station (BS), at least one UE, and one or more optional network elements that provide connectivity within a network. The UE can communicate with the network, such as a Core Network (CN), an Evolved Packet Core (EPC) network, an Evolved Universal Terrestrial RAN (E-UTRAN), a Next Generation Core (NGC), a 5G Core (5GC), or the Internet, via a RAN established by one or more BS. A UE may include, but is not limited to, a mobile station, a mobile terminal or device, or a user communication radio terminal. The UE may be portable radio equipment, including, but not limited to, a mobile phone, tablet, handheld device, sensor, vehicle, or Personal Digital Assistant (PDA) with wireless communication capabilities. The UE may be configured to receive and transmit signals over an air interface to one or more cells in a RAN. The BS can be configured to provide communication services in accordance with at least one Radio Access Technology (RAT) such as Worldwide Interoperability for Microwave Access (WiMAX), Global System for Mobile Communications (GSM) often referred to as 2G, GSM Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN), General Packet Radio Service (GPRS), Universal Mobile Telecommunications System (UMTS) often referred to as 3G based on Broadband Code Division Multiple Access (W-CDMA), High Speed ​​Packet Access (HSPA), LTE, LTE-A, evolved / enhanced LTE (eLTE) which is LTE connected to 5GC, NR (often referred to as 5G) and / or LTE-A Pro.However, the scope of this description is not limited to these protocols. The BS may include, but is not limited to, a Node B (NB) in UMTS, an evolved Node B (eNB) in LTE or LTE-A, a Radio Network Controller (RNC) in UMTS, a BS Controller (BSC) in GSM / GERAN, a next-generation eNB (ng-eNB) in a BS of QPfrZ ίη / ΖΖΠΖ / Β / ΥΙΛΙ Evolved Universal Terrestrial Radio Access (E-UTRA) in conjunction with 5GC, a next-generation Node B (gNB) in the 5G-RAN (or in the 5G access network (5G-AN)) or any other device capable of controlling radio communication and managing radio resources within a cell. The BS can serve one or more UEs through a radio interface. The base station (BS) can provide radio coverage to a specific geographic area using a plurality of cells included in the network area network (RAN). The BS can support cell operations. Each cell can be operational to provide services to at least one user unit (UE) within its radio coverage area. Each cell (often called a service cell) can provide services to one or more UEs within its radio coverage area. Each cell schedules downlink (DL) and optionally uplink (UL) resources to at least one UE within its radio coverage area for DL ​​and optionally UL packet transmissions. The BS can communicate with one or more UEs in the radio communication system across multiple cells. A cell can allocate Sidelink (SL) resources to support ProSe (Proximity Service), LTE SL services, and / or Vehicle-to-All (V2X) LTE / NR services. Each cell can have overlapping coverage areas with others. QPfrZ Ln / Zznz / E / YIAI cells. In Multi-RAT Dual Connectivity (MR-DC) scenarios, the primary cell of a Master Cell Group (MCG) or a Secondary Cell Group (SCG) may be called a Special Cell (SpCell). A Primary Cell (PCell) may refer to the SpCell of an MCG. A Primary SCG Cell (PSCell) may refer to the SpCell of an SCG. An MCG may refer to a group of service cells associated with the primary node (MN), comprising the SpCell and optionally one or more SCells. An SCG may refer to a group of service cells associated with the secondary node (SN), comprising the SpCell and optionally one or more SCells. As previously described, the frame structure for NR supports flexible configurations to accommodate various next-generation communication requirements (e.g., 5G), such as eMBB, mMTC, and URLLC, while meeting requirements for high reliability, high data rates, and low latency. Orthogonal Frequency Division Multiplexing (OFDM) technology in 3GPP can serve as the basis for an NR waveform. Scalable OFDM numerology, such as adaptive subcarrier separation, channel bandwidth, and cyclic prefix (CP), can also be used. Two coding schemes are considered for NR: Low Density Parity Check (LDPC) and Polar code. The coding scheme can be configured based on channel conditions and / or service applications. At least the DL transmission data, a guard period, and UL transmission data must be included within a transmission time interval (TTI) of an individual NR frame. The respective portions of the DL transmission data, guard period, and UL transmission data should also be configurable based on, for example, the NR network dynamics. SL resources can also be provided in an NR frame to support ProSe or V2X services. Multiple public land mobile networks (PLMNs) can operate in unlicensed spectrum. Multiple PLMNs can share the same unlicensed carrier. PLMNs can be public or private. Public PLMNs can be (but are not limited to) carriers or virtual operators, providing radio services to public subscribers. Public PLMNs can own licensed spectrum and support radio access technology in the licensed spectrum as well. Private PLMNs can be (but are not limited to) micro-operators, factories, or businesses, providing radio services to their private users (e.g., employees or machines).Public PLMNs can support more deployment scenarios (e.g., carrier aggregation between the licensed NR band (PCell) and unlicensed NR (NR-U) (SCell), dual connectivity between the licensed LTE band (PCell) and NR-U (PSCell), standalone NR-U, an NR cell with DL in an unlicensed band and UL in a licensed band, dual connectivity between the licensed NR band (PCell) and NR-U (PSCell)). Private PLMNs primarily support (but are not limited to) unlicensed standalone radio access technology (e.g., standalone NR-U). In this description, a connected mode may refer to a Radio Resource Control (RRC)_CONNECTED state (or simply denoted as RRC_CONNECTED). A standby mode may refer to an RRC IDLE state (or simply denoted as RRC_IDLE). An inactive mode may refer to an RRC_INACTIVE state (or simply denoted as RRC_INACTIVE). A UE operating in RRC_IDLE may refer to an RRC IDLE UE. A UE operating in RRC INACTIVE may refer to an RRC_INACTIVE UE. A UE operating in RRC_CONNECTED may refer to an RRC_CONNECTED UE. In order to meet the low latency and high reliability requirements for the vertical industry and support 5G local area network (LAN) service and dedicated wireless networks, e.g., private networks, there is a need to improve the cell (re)selection mechanism for the next generation cellular network. QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ A private network (e.g., a Non-Public Network (NPN)) can support vertical services and LANs. Private networks can be further classified into Single Non-Public Networks (SNPNs) and Integrated Public Non-Public Networks (PNI-NPNs). Operators can focus on PNI-NPN solutions applicable to a much broader range of use cases, such as Small Offices and Home Offices (SOHOs) and residential and private network coverage deployments, etc. The 5G system will be enhanced to support NPN. Two network identifiers for NPN are being introduced: Network Identifier / Identity (NID) and Closed Access Group (CAG) ID. A 5G RAN can also implement NPN by improving features such as NPN identification, discovery, selection / reselection, access control, and mobility restrictions. When considering NPN scenarios, several types of UEs and cell types can be introduced. For example, a UE can be an SNPN access mode UE or a non-SNPN access mode UE (i.e., a UE that does not operate in SNPN access mode). A cell can be an SNPN cell, a CAG cell, a PLMN cell, or a cell that supports at least SNPN deployments (e.g., a cell broadcasts an SNPN ID, identifying the SNPNs that the cell supports, where an SNPN QPfr7 ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ ID may include a PLMN ID and / or a NID), a cell that supports at least PNI-NPN deployments (e.g., a cell broadcasts PNI-NPN ID, identifying the PLMNs that the cell supports, where a PNI-NPN ID may include a PLMN ID and / or a CAG ID), a cell that supports at least PLMN deployments (e.g., a cell broadcasts PLMN ID, identifying the PLMNs that the cell supports), a cell that supports at least SNPN and PNINPN deployments, a cell that supports at least SNPN and PLMN deployments, a cell that supports at least PNI-NPN and PLMN deployments, a cell that supports SNPN, PNI-NPN and PLMN deployments, etc. However, the behavior of different types of UE for different types of cells, especially in substates (e.g., normally camped state, any cell selection state, camped in any cell state) in RRC_IDLE / RRC_INACTIVE, is not clear. The behavior of different types of UEs for different types of cells, especially in substates (e.g., normally camped state, any cell selection state, camped in any cell state) in RRC—IDLE / RRC_INACTIVE, is provided in this description. In addition, the cell reselection evaluation process, the definition of an acceptable cell, the selection of a cell transitioning to RRC—IDLE or RRC—INACTIVE, and cells with cell reservations, access restrictions, or unsuitable for normal camping are also provided. QPfr7 ίη / ZZΖΠZ / E / YΙΛΙ especially for the RRC_IDLE / RRC_INACTIVE scenarios. In addition, a UE in SNPN access mode transitioning to non-SNPN access mode is described. The handling of an intrafrequency reselection indicator is also described. Selection state of any cell in a SNPN Figures 1A and 1B show the states, state transitions, and procedures for a UE according to an implementation of the present description. As shown in Figure 1A, each time a UE performs a new PLMN selection or a new SNPN selection, it can trigger an exit to node 1. When the UE (e.g., in SNPN access mode) selects an SNPN or when the UE (e.g., in non-SNPN access mode) selects a PLMN, the UE can perform the initial cell selection 102 if the UE has no stored cell information for the selected SNPN or PLMN, respectively. When the UE (e.g., in SNPN access mode) selects an SNPN or when the UE (e.g., in non-SNPN access mode) selects a PLMN, the UE can perform the stored information cell selection 104 if the UE has stored cell information for the selected SNPN or PLMN, respectively.If the UE does not find any suitable cell during the stored information cell selection 104, the UE can return to perform the initial cell selection 102. If the UE finds at least one cell. QPfr7 ίη / ZZΖΠZ / E / YΙΛΙ suitable during initial cell selection 102 or stored information cell selection 104, the UE can enter the normally camped state 106. If the UE does not find any suitable cell during initial cell selection 102, the UE can enter any cell selection state 114. On the other hand, if the UE operating in connected mode 110 returns to sleep or idle mode, the UE can perform cell selection 112 upon exiting connected mode 110. If the UE finds at least one suitable cell in cell selection 112, the UE can enter the normally camped state 106. If the UE does not find any suitable cell in cell selection 112, the UE can perform stored information cell selection 104. When the UE is in the normally camped state 106, the UE can initiate the cell reselection evaluation process 108 to search for suitable cells. The UE can enter (or remain in) the normally camped state 106 if it finds at least one suitable cell during the cell reselection evaluation process 108. If the UE does not find any suitable cells during the cell reselection evaluation process 108, the UE can enter the any cell selection state 114. When the UE is in the normally camped state 106 and the UE's non-accessible stratum layer (NAS) indicates that registration on the selected PLMN / SNPN is rejected, the UE can enter the QPfrZ ίη / ZZΖΠZΖ / Β / YΥΙΛΙ selection status of any cell 114. With reference to Figure 1B, state transitions and procedures are shown after the UE enters the any cell 114 selection state. As illustrated in Figure 1B, when no Universal Subscriber Identity Module (USIM) is inserted into the UE and there is no subscription to an SNPN, the UE can enter the any cell 114 selection state. The UE can leave the any cell 114 selection state and enter Node 2 (which connects to the normally camped 106 state in Figure 1A) if the UE finds at least one suitable cell in the any cell 114 selection state. If the UE does not find any suitable cell, but finds at least one acceptable cell (and / or moves to sleep mode) in the any cell 114 selection state, the UE can enter camped in any cell 116.When the UE is in the camped state in any cell 116 state, the UE can initiate the cell 118 reselection evaluation process. If the UE finds at least one acceptable cell during the cell 118 reselection evaluation process, the UE can enter (or remain in) the camped state in any cell 116 state. If the UE does not find any acceptable cells during the cell 118 reselection evaluation process, the UE can return to the selection state of any cell 114. QQfrZ ίΠ / ZZΖηZ / E / YΙΛΙ finds at least one suitable cell in the camped state in any cell state 116, the UE can enter Node 2 to return to the normally camped state 106 in Figure 1A. If the UE operating in Connected Mode 120 (which provides services only for emergency calls) returns to Standby Mode, the UE can perform Cell Selection 122 upon exiting Connected Mode 120. If the UE finds at least one acceptable cell during Cell Selection 122, the UE can enter the Camped State at any cell state 116. If the UE does not find any acceptable cell during Cell Selection 122, the UE can enter the Any Cell Selection State 114. For a UE operating in SNPN access mode, a cell can be considered a suitable cell if at least one of the following conditions (1) to (4) is met: (1) The cell is part of the selected SNPN or the registered SNPN of the UE. (2) The cell selection criterion is met. (3) The cell is not restricted according to the most recent information provided by the ÑAS layer. (4) According to the most recent information provided by the ÑAS layer, the cell is part of at least one Tracking Area (TA) that is not part of the list of QPfrZ Ln / Zznz / E / YIAI Prohibited Monitoring Areas that belong to the selected SNPN or the registered EU SNPN. For condition (1), the cell can broadcast at least one SNPN identity through System Information Block (SIB) type 1 (SIB1). After receiving the SNPN identity, the UE can determine whether each SNPN identity matches an identity from the UE's selected SNPN or the UE's registered SNPN. For condition (2), the cell selection criterion S can be considered met when the cell selection receive (RX) level (dB) is greater than zero and the cell selection quality (dB) is greater than zero. The UE can derive the cell selection RX level value based on a measured cell RX level (e.g., a received reference signal quality (RSRP) value), a minimum required cell RX level (dBm), an offset to the minimum required cell RX level (dBm), SNPN-specific parameters, etc. The minimum required cell RX level (dBm) can be affected by SNPN deployments / operations or SNPN-specific parameters.The offset to the minimum required RX level signaled in the cell (dBm) can be affected by SNPN deployments / operations or parameters specific to the SNPN (e.g., an SNPN (periodic) search, an SNPN (periodic) search while. QPfrZ Ln / Zznz / E / YIAI indicates that the UE is in SNPN access mode, a (periodic) SNPN search while the UE is in non-SNPN access mode (e.g., while the UE is normally in a PLMN or visiting PLMN). The cell selection RX level value (or parameters or formula) can be adjusted (e.g., the duty / camping cell can indicate the adjusted value to the UE via broadcast information or dedicated signaling, the UE can adjust itself (e.g., based on preconfigured values)) if the UE operates in SNPN access mode compared to the case if the UE operates in non-SNPN access mode (e.g., the UE can perform normal PLMN selection in non-SNPN access mode or operate in a PNI-NPN).The UE can derive the cell selection quality value based on a measured cell quality value (e.g., a received reference signal quality (RSRQ) value), a minimum required cell quality level (dB), a shift to the minimum required cell quality level signaled in the cell (dB), SNPN-specific parameters, etc. The minimum required cell quality level (dB) can be affected by SNPN deployments / operation or SNPN-specific parameters.The offset to the minimum required quality level signaled in the cell (dB) may be affected by SNPN deployments / operations or SNPN-specific parameters (e.g., a (periodic) SNPN search, a (periodic) SNPN search while the UE is in SNPN access mode, a (periodic) SNPN search while the UE is in non-SNPN access mode (e.g., while the UE is normally camped in a PLMN or visiting PLMN)).The cell selection quality value (or parameters or formula) can be adjusted (e.g., the duty / camping cell can indicate the adjusted value to the UE by broadcast information or by dedicated signaling, the UE can adjust itself (e.g., based on preconfigured values)) if the UE operates in SNPN access mode compared to the case of the UE operating in non-SNPN access mode (e.g., the UE can perform normal PLMN selection in non-SNPN access mode or operate in a PNI-NPN). Cell reselection evaluation process (classification mechanism for a RAN shared use case) The UE (for example, in SNPN access mode) can classify all cells that meet cell selection criterion S. The classification of all cells can correspond to criterion R. The cell classification can consider an NPN-related factor (for example, Qsnpn). The NPN-related factor can be an offset (RSRP) used for NPN scenarios (for example, SNPN or PNI-NPN). QQfrZ ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ QPfrZ Ln / Zznz / E / YIAI Rs—Q med, st Qhist Qmisphasetemp Rn = Q med,n -Qphase offset -Qtemp phase offset + Qsnpn where: Qmed RSRP measurement quantity used in cell reselections. Qdesfase For intrafrequency: Equal to Qdesfases,n, if Qdesfase s,n is valid, otherwise this is equal to zero. For interfrequency: Equal to Qdesfases,n plus Qdesfase frequency, if Qdesfase s,n is valid, of Qdesfaseiemp Offset temporarily applied to a cell as specified in TS 38.331. During the cell reselection evaluation process (for example, the cell 108 or 118 reselection evaluation process shown in Figures 1A and 1B), the UE (for example, in SNPN access mode) can attempt to find a suitable cell to camp in. The cell reselection evaluation process can also be used to search for acceptable cells if a suitable cell is not found.For example, among all candidate cells (e.g., cells that meet cell S selection criteria), the UE can classify each candidate cell based on (1) whether the candidate cell supports NPN and / or only NPN, (2) whether the candidate cell supports PLMN and / or only PLMN, (3) whether the candidate cell supports SNPN and / or only SNPN, (4) whether the cells support RAN sharing, (5) the number of SNPN identities, PNI-NPN identities, and / or PLMN identities broadcast by the cells, (6) the number of SNPN identities, PNI-NPN identities, and / or PLMN identities, where each of the SNPN identities, PNI-NPN identities, and / or PLMN identities can be broadcast by the cell and matches the UE's selected / registered / supported SNPN identities, PNI-NPN identities and / or PLMN identities, and / or (7) the received signal (for example, RSRP / RSRQ / Received Signal Strength Indication, RSSI). During the cell reselection evaluation process, the UE can classify all candidate cells that meet cell selection criterion S and also meet a certain threshold value R (e.g., Rnes greater than or equal to Rth, where Rth is a threshold value R). Rth can be preconfigured for the UE. The UE can receive Rth via broadcast message (e.g., SIB1 and / or other System Information Blocks (SIBs)) from the duty / camping cell. The UE can also receive Rth via dedicated signaling from the camped / duty cell. Among all candidate cells (e.g., cells that meet cell selection criterion S and also meet a certain threshold value R), the UE can classify all candidate cells based on (1) whether the cells support NPN and / or only NPN, (2) whether the cells support QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ PLMN and / or PLMN only, (3) if the cells support SNPN and / or SNPN only, (4) if the cells support RAN sharing, (5) the number of SNPN identities, PNI-NPN identities and / or PLMN identities broadcast by the cells, (6) the number of SNPN identities, PNI-NPN identities and / or PLMN identities, where each of the SNPN identities, PNI-NPN identities and / or PLMN identities can be broadcast by the cells and matches the UE's selected / registered / supported SNPN identities, PNI-NPN identities and / or PLMN identities, and / or (7) the received signal (e.g., RSRP / RSRIQ / RSSI). In the cell reselection evaluation process (e.g., the cell reselection evaluation process 108 or 118 shown in Figures 1A and 1B), a UE (e.g., in SNPN access mode) can determine if a cell can be selected as a candidate cell for cell (re)selection, and / or classify one or more cells (e.g., candidate cells) to find suitable / acceptable cells. For example, the UE (e.g., in SNPN access mode) can classify candidate cells that broadcast at least one SNPN identity. The UE can classify candidate cells that only broadcast SNPN identities (e.g., candidate cells to be classified do not broadcast PLMN identities, candidate cells to be classified do not broadcast any PLMN identities with associated network identities and / or CAG identities, or candidate cells to be classified do not broadcast CAG identities). The UE may not consider a cell that broadcasts only PLMN identities without associated network identities and without associated CAG identities as a candidate cell for classification and / or cell reselection. The UE may not consider a cell that broadcasts PLMN identities with associated CAG identities as a candidate cell for classification and / or cell reselection.The UE may consider a cell that broadcasts only PLMN identities without associated network identities and / or CAG identities as a candidate cell, but the UE may choose not to rank this cell for cell reselection. The UE may consider the number of SNPN identities, PLMN identities, and PNI-NPN identities broadcast by candidate cells as a ranking factor. The UE may rank the cell that broadcasts the most SNPN identities highest among all candidate cells and rank the cell that broadcasts the fewest SNPN identities lowest. Cells that broadcast the same number of SNPN identities may have the same ranking among all candidate cells. The UE can classify cells, which broadcast the same number of SNPN identities, based on the received signal strength (e.g., RSRP / RSRQ / RSSI).He. QPfr7 ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ UE can rank a cell with the strongest received signal strength higher than another cell with the weakest received signal strength, where these two cells broadcast the same number of SNPN identities. If the UE supports the operation on at least one SNPN indicated by at least one SNPN identity (for example, the UE is preconfigured with a list of (equivalent) SNPN identities that identify a list of SNPNs that the UE can support), the UE can consider the number of matching SNPN identities that are distributed across the candidate cells and also supported by the UE itself as a ranking factor for the candidate cells. The UE can rank the cell with the highest number of matching SNPN identities to have the highest rank among all candidate cells. The UE can rank the cell with the lowest number of matching SNPN identities to have the lowest rank among all candidate cells. The UE can rank the cell with the same number of matching SNPN identities to have the same rank among all candidate cells.The UE can rank cells with the same number of matching SNPN identities based on received signal strength (e.g., RSRP / RSRQ / RSSI). The UE may rank a cell with a stronger received signal strength higher than another cell with a weaker received signal strength. QPfrZ ίη / ZZΖΠZ / E / YΙΛΙ weakest, where these two cells can have the same number of matching SNPN identities. During the cell reselection evaluation process, the UE can select the highest-ranked candidate cell and verify whether it meets the appropriate cell requirements. If the highest-ranked candidate cell meets the appropriate cell requirements, the UE can determine it as a suitable cell. If the highest-ranked candidate cell does not meet the appropriate cell requirements, the UE can select the second-highest-ranked candidate cell and verify whether it meets the appropriate cell requirements. If the second-highest-ranked candidate cell meets the appropriate cell requirements, the UE can determine it as a suitable cell.If the candidate cell with the second highest range does not meet the appropriate cell requirements, the UE can continue to check whether the candidate cell with the next highest range (for example, the third highest range, if one exists) is an appropriate cell according to the appropriate cell requirements. If the UE cannot find any candidate cell that broadcasts at least one SNPN identity, or if the UE cannot find any suitable cell during the cell 108 reselection evaluation process, the UE may enter QPfrZ ίη / ZZΖΠZΖ / Β / YΙΛΙ to the selection state of any cell (for example, to the selection state of any cell 114 illustrated in Figures 1A and 1B). UE behavior in the selection state of any cell The selection state of any cell (e.g., the selection state of cell 114 shown in Figures 1A and 1B) may be applicable to a UE (e.g., in SNPN access mode) operating in RRC_IDLE or RRC_INACTIVE. In the selection state of any cell, the UE may attempt to find a suitable cell to camp in (e.g., by performing a cell (re)selection process). If the UE does not find a suitable cell after scanning certain RATs and frequency bands supported by the UE, it may attempt to find an acceptable cell from any PLMN / SNPN / CAG to camp in, trying to access the RATs supported by the UE and first searching for a high-quality cell.The measured RSRP value (e.g., the RSRP of a synchronization signal block (SSB) or the RSRP of a channel status information reference signal (CSI-RS)) of the high-quality cell may be greater than or equal to a threshold / predetermined value (e.g., -110 dBm). RATs and frequency bands that support at least PLMN deployments may include (a) RATs and frequency bands that support only PLMN deployments, (b) RATs and bands of QPfrZ Ln / Zznz / E / YIAI frequency bands that support PLMN deployments and PNINPN deployments, (c) RAT and frequency bands that support PLMN deployments and SNPN deployments, and / or (d) RAT and frequency bands that support PLMN deployments, PNI-NPN deployments and SNPN deployments, for example, when considering network sharing and / or RAN sharing between a PLMN, a PNI-NPN and / or an SNPN. An IDLE / INACTIVE RRC UE that is not camped in any cell can remain in the selection state of any cell (e.g., the selection state of any cell 114 in Figure IB). UE in SNPN access mode - UE behavior in the selection state of any cell An SNPN access mode UE can refer to a UE that operates in SNPN scenarios. For example, an SNPN access mode UE can be an advanced UE with SNPN support (e.g., a Release NR UE 16 (Rel-16) (or higher) with SNPN support but without PLMN support, a Rel-16 (or higher) UE with both SNPN and PLMN support, a Rel-16 (or higher) UE with SNPN support but without PNI-NPN support, a Rel-16 (or higher) UE with both SNPN and PNI-NPN support, or a Rel-16 (or higher) UE with SNPN, PNI-NPN, and PLMN support). The UE can be preconfigured in either SNPN access mode or non-SNPN access mode. The UE can be configured, for example, by the UE's own ÑAS layer, by the core network (e.g., Access and Mobility Management Function (AMF)) through a cell to the UE's ÑAS layer, whether the UE is in SNPN access mode or non-SNPN access mode. If the UE in SNPN access mode does not find a suitable cell after performing a full scan of all RATs and all frequency bands for SNPN deployments (for example, based on stored cell information), for example, the UE has scanned for RATs and frequency bands that support SNPN deployments or has scanned for NR (instead of LTE, UMTS, and / or GSM) and all frequency bands that support SNPN deployments, the UE may attempt to find any cell (among the following cell types (1) to (7)) and / or try all RATs for SNPN deployments (for example, NR instead of LTE, GSM, and / or UMTS) that are supported by the UE and / or first search for a high-quality cell (for example, a cell with its measured RSRP value (for example, the RSRP of an SSB or the RSRP of a CSI-RS) greater than or equal to -110 dBm). The UE may search for at least one high-quality cell. Any cell can be found in the following cell types (1) to (7): (1) acceptable cells that support the SNPN (only) (e.g., UE selected SNPN, UE registered SNPN, any SNPN); (2) CAG-only acceptable cells (e.g., a CAG-only acceptable cell can support only one PNI-NPN, and the PLMN ID associated with the CAG ID broadcast by the CAG-only acceptable cell can be a default PLMN ID); (3) PLMN-only acceptable cells (e.g., a PLMN-only acceptable cell may not support an SNPN and a PNINPN, the PLMN that operates the PLMN-only acceptable cell may be a default PLMN, and the PLMN ID broadcast by the PLMN-only acceptable cell may be a default PLMN ID); (4) acceptable cells that support an SNPN (e.g., the UE's selected SNPN, the UE's registered SNPN, any SNPN) and a PNI-NPN (e.g., the PLMN ID associated with the CAG ID broadcast by the acceptable cell may be a default PLMN ID); (5) acceptable cells that support an SNPN (e.g., the UE's selected SNPN, the UE's registered SNPN, any SNPN) and a PLMN (e.g., the PLMN that operates the acceptable cell can be a default PLMN, and the PLMN ID broadcast by the acceptable cell can be a default PLMN ID); (6) acceptable cells that support a PNI-NPN (e.g., the PLMN ID associated with the CAG ID broadcast by the acceptable cell may be a default PLMN ID) and a PLMN (e.g., the PLMN that operates the acceptable cell may be a default PLMN, and the PLMN ID broadcast by the acceptable cell may be a default PLMN ID); QPfrZ ίη / ZZΖΠZ / E / YΙΛΙ (7) acceptable cells that support an SNPN (e.g., the selected SNPN, the registered SNPN, any SNPN), a PNI-NPN (e.g., the PLMN ID associated with the CAG ID broadcast by the acceptable cell may be a default PLMN ID), and a PLMN (e.g., the PLMN that operates the acceptable cell may be a default PLMN, and the PLMN ID broadcast by the acceptable cell may be a default PLMN ID) in which to camp. The UE can determine which cell to camp in according to a priority order of cell types. For example, the priority of a first group that includes type (1), type (4), type (5), and / or type (7) may be higher than the priority of a second group that includes type (2), type (3), and / or type (6). If the UE finds at least two high-quality cells, it can camp in one of the at least two cells belonging to the higher-priority group. If the UE finds at least two high-quality cells that belong to the same priority group, it can camp randomly in one of the at least two cells. If the UE finds at least two high-quality cells that belong to the same priority group, it can camp in the cell with the highest quality. As described above, a PLMN that meets certain conditions can be considered a default PLMN. The default PLMN can be a PLMN of the QQfrZ ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ The UE (e.g., a UE in SNPN access mode) may have previously selected / registered the selected / registered PLMN ID associated with it. When the UE transitions from non-SNPN access mode to SNPN access mode, it may not delete / release the stored selected / registered PLMN ID associated with the selected / registered PLMN. The default PLMN may be a preconfigured PLMN (e.g., preconfigured by the core network or preconfigured by the USIM). The default PLMN may be associated with a default PLMN ID, which may be a dummy PLMN ID and / or a fixed PLMN ID. The fixed PLMN ID may be globally unique or locally unique (e.g., unique to an SNPN). If the UE in SNPN access mode does not find any nearby SNPN cells (for example, if the UE in SNPN access mode does not find any SNPN cells before an SNPN search timer expires), the RRC layer of the UE in SNPN access mode can report the status information (for example, no SNPN cells found) to the UE's ÑAS layer. Upon receiving the status information, the UE's ÑAS layer can switch from SNPN access mode to non-SNPN access mode (for example, if the UE supports a normal PLMN and / or a PNI-NPN). Upon receiving the status information, the UE's ÑAS layer can (re)start a suspension_ÑAS timer. The UE's ÑAS layer can instruct the UE's RRC layer to perform a power saving. QPfrZ Ln / Zznz / E / YIAI The UE can be preconfigured with a NAS suspend timer (for example, at the UE's NAS layer) via the network or the USIM. The UE can receive the NAS suspend timer configuration from the network (for example, from a service cell, core network, or AME) included in the RRC message. The UE can receive an RRC message from the network, where the RRC message includes NAS information containing the NAS suspend timer configuration.The UE can receive the RRC message from the network during an RRC state transition (for example, via an RRC release message without a suspend configuration for the transition from RRC_CONNECTED to RRC_IDLE, via an RRC release message without a suspend configuration for the transition from RRC_INACTIVE to RRC_IDLE, via an RRC release message with a suspend configuration for the transition from RRC_CONNECTED to RRC_INACTIVE) or when operating in RRC CONNECTED (for example, via an RRC reconfiguration message). Upon receiving an RRC message that includes NAS information, including the suspension_NAS timer configuration, the UE's RRC layer can forward the NAS information to the UE's NAS layer.If the UE is configured with the ÑAS suspend timer during the RRC state transition or when operating in RRC_CONNECTED, the UE can replace the preconfigured ÑAS suspend timer with the newly configured ÑAS suspend timer. When the. QPfr7 ίη / ΖΖΠΖ / Ε / ΥΙΛΙ UE receives a newly configured suspension_NAS timer, UE can replace the stored suspension NAS timer with the newly configured suspension_NAS timer. The UE can be preconfigured with a suspension_AS timer via the network (for example, through dedicated signaling, through system information) or via the USIM. The UE can receive a suspension_AS timer from the network during an RRC state transition from RRC_CONNECTED to RRC_INACTIVE (for example, through an RRC release message that includes a suspension configuration), during an RRC state transition from RRC INACTIVE to RRC IDLE (for example, through an RRC release message without a suspension configuration), or during an RRC state transition from RRC_CONNECTED to RRC_IDLE (for example, through an RRC release message without a suspension configuration). If the UE is configured with a new suspension_AS timer during an RRC state transition, the UE can replace the preconfigured suspension_AS timer with the newly configured one.When the UE receives the newly configured AS suspension timer, the UE can replace the stored suspension_AS timer with the newly configured suspension_AS timer. When the EU moves from a first RRC state (for example, QPfr7 ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ After transitioning from the RRC state (e.g., RRC_INACTIVE) to a second RRC state (e.g., RRC_IDLE), the UE can release (or reset) the SNPN search timer and / or the suspension_NAS timer, which the UE can maintain or which can run while the UE is in the first RRC state (e.g., RRC_INACTIVE). After the transition to the second RRC state (e.g., RRC_IDLE), the UE in the second RRC state can (re)start the SNPN search timer and / or the suspension_NAS timer based on the corresponding values, which the UE can receive via broadcast information and / or via dedicated signaling from the service / camping cell, and / or which are preconfigured by the network / USIM.However, when the UE transitions from the first RRC state (e.g., RRC_INACTIVE) to the second RRC state (e.g., RRC_IDLE), the UE may not release (or reset) the SNPN search timer and / or the NAS sleep timer, which the UE may maintain or execute while in the first RRC state (e.g., RRC_INACTIVE). The UE in the second RRC state (e.g., RRC_IDLE) may continue to execute the timer based on the corresponding values ​​while in the first RRC state (e.g., RRC_INACTIVE). If the UE in SNPN access mode enters the any cell selection state (e.g., any cell selection state 114), the UE's RRC layer can report to QPfrZ ίη / ZZΖΠZ / Β / YΙΛΙ the UE's ÑAS layer. The UE's ÑAS layer can change the access mode from SNPN to non-SNPN if the UE also supports PNI-NPN and / or PLMN deployments. If the UE's RRC layer informs the UE's ÑAS layer of status information, the UE's ÑAS layer can change the access mode from SNPN to non-SNPN if the UE also supports PNI-NPN and / or PLMN deployments. If the UE switches to non-SNPN access mode, the UE can perform a PLMN selection (for example, based on stored information). If the UE switches to non-SNPN access mode, the UE can exit the selection state of any cell. If the UE switches to non-SNPN access mode, the UE can store the information used to operate in SNPN access mode. If the UE switches to non-SNPN access mode, the UE can delete the information used to operate in SNPN access mode. UE in non-SNPN access mode - UE behavior in the selection state of any cell A UE in non-SNPN access mode with a selected / registered CAG ID can refer to a UE operating in PNI-NPN scenarios. A UE in non-SNPN access mode without a selected / registered CAG ID can refer to a UE operating in PLMN scenarios instead of PNI-NPN scenarios. A UE in non-SNPN access mode can be (1) a legacy UE without NPN support (e.g., NR UE release-15). (1) QPfrZ Ln / Zznz / E / YIAI (Rel-15), LTE UE), (2) an advanced UE with NPN support (e.g., Rel-16 (or beyond) or an NR UE with NPN and PLMN support), or (3) an advanced UE without NPN support (e.g., Rel-16 (or beyond) or an NR UE with PLMN support only without NPN support). If the UE in non-SNPN access mode does not find a suitable cell after performing a full scan of all RATs and all frequency bands for non-SNPN deployments (e.g., at least PLMN deployments or at least PNI-NPN deployments) (e.g., based on stored cell information), for example, the UE in non-SNPN access mode scans RATs and frequency bands that do not support SNPN deployments or scans NR, LTE, UMTS and / or GSM and all frequency bands that do not support SNPN deployments, the UE may attempt to find any cell (among the following cell types (8) to (14)) and / or try all RATs for PLMN and / or PNI-NPN deployments (e.g., NR, LTE, GSM and / or UMTS, which do not support PNI-NPN, NR that supports PNI-NPN) that are supported by the UE, and / or first search for a high-quality cell (e.g., a cell with a measured RSRP value (e.g., SSB RSRP, CSI-RS RSRP) greater than or equal to -110 dBm).Any cell can be found among the following cell types (8) to (14):. (8) acceptable cells of the SNPN (for example, the SNPN selected when the UE was in SNPN access mode, the QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ SNPN registered when the UE was in SNPN access mode, any SNPN or the default SNPN); (9) CAG-only acceptable cells (e.g., the CAG-only acceptable cell can support only one PNI-NPN, the PLMN ID associated with a CAG ID broadcast by the CAG-only acceptable cell can be a default PLMN ID, the CAG ID broadcast by the CAG-only acceptable cell can be any CAG ID instead of the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the CAG-only acceptable cell can be any PLMN ID instead of the registered / selected PLMN ID associated with the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the CAG ID broadcast by the CAG-only acceptable cell can be any CAG ID for a UE in non-SNPN access mode without a selected / registered CAG ID,The PLMN ID broadcast by the acceptable CAG cell can be any PLMN ID instead of the PLMN ID registered / selected for a UE in non-SNPN access mode without a selected / registered CAG ID); (10) Acceptable cells only PLMN (e.g., this cell may not support SNPN and PNI-NPN, the PLMN operating this cell may be a default PLMN, the PLMN ID broadcast by this cell may be a default PLMN ID, the PLMN ID broadcast by this cell may be any PLMN QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ ID instead of the PLMN ID associated with the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by this cell can be any PLMN ID instead of the PLMN ID associated with the UE's selected / registered PLMN ID for a UE in non-SNPN access mode without a selected / registered CAG ID); (II) acceptable cells that support the SNPN (e.g., the SNPN selected when the UE was in SNPN access mode, the SNPN registered when the UE was in SNPN access mode, any SNPN, or the default SNPN) and the PNINPN (e.g., the PLMN ID associated with the CAG ID broadcast by the acceptable cell can be a default PLMN ID, the CAG ID broadcast by the acceptable cell can be any CAG ID instead of the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the registered / selected PLMN ID associated with the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the CAG ID broadcast by the acceptable cell can be any CAG ID for a UE in non-SNPN access mode without a selected / registered CAG ID,The PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the PLMN ID, QPfr7 ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ registered / selected for a UE in non-SNPN access mode without a CAG ID selected / registered); (12) acceptable cells that support SNPN (e.g., the SNPN selected when the UE was in SNPN access mode, the SNPN registered when the UE was in SNPN access mode, any SNPN, or a default SNPN) and PLMN (e.g., the PLMN operating the acceptable cell may be a default PLMN, the PLMN ID broadcast by the acceptable cell may be any PLMN ID, the acceptable cell may not support SNPN and PNI-NPN, the PLMN ID broadcast by the acceptable cell may be any PLMN ID instead of the PLMN ID associated with the UE's selected / registered CAG ID for the UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell may be any PLMN ID instead of the PLMN ID associated with the UE's selected / registered PLMN ID for a UE in non-SNPN access mode without a CAG ID selected / registered); (13) acceptable cells that support PNI-NPN (for example, the PLMN ID associated with the CAG ID broadcast by the acceptable cell can be a default PLMN ID, the CAG ID broadcast by the acceptable cell can be any CAG ID instead of the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell can be any QPfrZ ίη / ΖΖΠΖ / Β / ΥΙΛΙ PLMN ID instead of the registered / selected PLMN ID associated with the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the CAG ID broadcast by the acceptable cell can be any CAG ID for a UE in non-SNPN access mode without a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the registered / selected PLMN ID for a UE in non-SNPN access mode without a selected / registered CAG ID) and the PLMN (e.g., the PLMN operating the acceptable cell can be a default PLMN, the PLMN ID broadcast by the acceptable cell can be a default PLMN ID, the acceptable cell can be non-SNPN and PNI-NPN compliant, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the PLMN ID associated with the selected / registered CAG ID) from the UE for a UE in non-SNPN access mode with a selected / registered CAG ID,(14) acceptable cells that support SNPN (for example, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the PLMN ID associated with the UE's selected / registered PLMN ID for a UE in non-SNPN access mode without a selected / registered CAG ID); and (15) acceptable cells that support SNPN (for example, the SNPN selected when the UE was in SNPN access mode, the SNPN registered when the UE was in SNPN access mode, any SNPN, or a default SNPN), PNI-, NPN (for example, the PLMN ID associated with the CAG ID broadcast by the acceptable cell can be a default PLMN ID, the CAG ID broadcast by the acceptable cell can be any CAG ID instead of the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the registered / selected PLMN ID associated with the selected / registered CAG ID of the UE for a UE in non-SNPN access mode with a selected / registered CAG ID, the CAG ID broadcast by the acceptable cell can be any CAG ID for a UE in non-SNPN access mode without a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell can be any PLMN ID instead of the registered / selected PLMN ID for a UE in non-SNPN access mode without a selected / registered CAG ID) and the PLMN (for example, the PLMN that operates the acceptable cell may be a default PLMN,The PLMN ID broadcast by the acceptable cell may be a default PLMN ID; the acceptable cell may not support SNPN and PNI-NPN; the PLMN ID broadcast by the acceptable cell may be any PLMN ID instead of the PLMN ID associated with the selected / registered CAG ID of the UE. For a UE in non-SNPN access mode with a selected / registered CAG ID, the PLMN ID broadcast by the acceptable cell may be any PLMN ID instead of the PLMN ID. QQfrZ ίη / ZZΖΠZΖ / Β / YΥΙΛΙ associated with the selected / registered PLMN ID of the UE for a UE in non-SNPN access mode without a selected / registered CAG ID), in which to camp. For a UE in non-SNPN access mode with a registered / selected CAG ID (e.g., a UE that only supports PNI-NPN, or a UE that supports at least PNI-NPN), the UE can test all RATs for PNI-NPN-only deployments instead of PLMN deployments. The UE can search for at least one high-quality cell. The UE can determine the cell in which to camp by prioritizing these cell types (for example, one or more of types (8) through (14)). For a UE in non-SNPN access mode with a selected / registered CAG ID, the priority of a first group that includes at least one of types (9), (11), (13), and (14) can be higher than the priority of a second group that includes at least one of types (8), (10), and (12). For a UE in non-SNPN access mode without a selected / registered CAG ID, the priority of a third group that includes at least one of types (10), (12), (13), and (14) can be higher than the priority of a fourth group that includes at least one of types (8), (9), and (11). If the UE finds at least two cells with high quality, it can camp in the cell belonging to the highest priority group. If the UE finds at least two high-quality cells that belong to the same priority group, the UE can randomly camp in one of the cells.If the UE finds at least two high-quality cells that belong to the same priority group, the UE can camp in the highest-quality cell. The default SNPN can be a previously selected / registered UE SNPN (for example, a UE in non-SNPN access mode). The UE (for example, when the UE is in SNPN access mode) can store the selected / registered SNPN ID associated with the UE's selected / registered SNPN ID. When a UE in SNPN access mode switches to a UE in non-SNPN access mode, the UE may not delete / release the stored selected / registered SNPN ID associated with the selected / registered SNPN. The default SNPN can be a preconfigured SNPN (for example, preconfigured by the core network, preconfigured by a USIM). The default SNPN can be associated with a default SNPN ID, which can be a dummy SNPN ID and / or a fixed SNPN ID. This fixed SNPN ID can be globally unique or locally unique (for example, unique to a PLMN). If the UE in non-SNPN access mode performs CAG cell (re)selection and / or if the UE operates in PNI-NPN scenarios, the UE can store a registered / selected CAG ID associated with the registered / selected CAG cell. The UE can transmit the registered / selected CAG ID to the network (e.g., a service cell, a camped cell, a BS, a core network entity (e.g., AME)) via QPfr7 iη / ZZΖΠZ / E / YΙΛΙ RRC signaling and / or ÑAS signaling during RRC procedures (e.g., RRC signaling in the RRC configuration request message during an RRC configuration procedure, ÑAS signaling encapsulated in the RRC configuration request message during the RRC connection configuration procedure, ÑAS signaling encapsulated in the RRC resume request message during the RRC connection resume procedure, and / or RRC signaling in the RRC resume request message during the RRC connection resume procedure). The UE may camp in a cell that broadcasts the UE's registered / selected CAG ID. The UE may consider a cell that broadcasts the UE's registered / selected CAG ID as a candidate cell during cell (re)selection. After the manual CAG selection by the UE's NAS layer, the UE's AS layer can select a cell that supports the manually selected CAG ID in order to perform the registration procedure triggered by the UE's NAS layer. The selected CAG ID can include both a manually selected CAG ID and a non-manually selected CAG ID. The non-manually selected CAG ID can refer to a CAG ID that is not determined / derived from the manual CAG selection. The non-manually selected CAG ID can refer to a CAG ID that is determined / derived from the autonomous CAG selection. For example, during the cell reselection evaluation process, a manually selected CAG ID can be treated with a higher priority than a non-manually selected CAG ID. Determination of SNPN / CAG / PLMN cells If the UE receives the PLMN ID and / or CAG broadcast ID of a cell (for example, in SIB1, in a Cell Access Related Information Element (IE), in an NPN Identity Information List IE), the UE can determine that this cell supports at least one PNINPN. The PLMN ID can be the default PLMN ID, associated with a default PLMN. If the UE receives the broadcast SNPN ID (for example, PLMN ID and / or network ID) from a cell (for example, in SIB1, in a Cell Access Information IE, in an NPN Identity Information List IE), the UE can determine that this cell supports at least one SNPN. The SNPN ID can be the registered SNPN ID associated with a registered SNPN. The SNPN ID can also be the selected SNPN ID associated with a selected SNPN. If the UE receives a cell's broadcast PLMN ID (for example, in SIB1, in a cell access-related information IE, or in a PLMN identity information list IE), the UE can determine that this cell supports at least one PLMN. The PLMN ID can be a default PLMN ID associated with a default PLMN. QPfr7 ίΠ / ΖΖηΖ / Ε / ΥΙΛΙ Acceptable cell in the NPN An acceptable cell can be a cell (for example, an SNPN-only cell, a PLMN-only cell, a PNINPN-only cell, a cell that supports both SNPN and PLMN deployments, a cell that supports both SNPN and PNI-NPN deployments, a cell that supports both PNI-NPN and PLMN deployments, or a cell that supports SNPN, PNI-NPN, and PLMN deployments) in which a UE (for example, a legacy UE without NPN support, an advanced UE with NPN support, or an advanced UE without NPN support) can camp to obtain limited service (originating emergency calls and / or receiving Earthquake and Tsunami Warning System (ETWS) and / or Commercial Mobile Alert Service (CMA) notifications). An acceptable cell can meet the following set of requirements to initiate an emergency call and / or receive an ETWS and / or CMA notification on an NR network: The cell is not restricted; and the cell meets the cell selection criteria. For specific deployments (e.g., SNPN), an acceptable cell may be a specific cell (e.g., an SNPN-only cell) where the UE (e.g., a legacy UE, an advanced UE without NPN support, an advanced UE with NPN support, a UE with a selected / registered SNPN ID, a UE with a selected / registered PLMN ID) in SNPN access mode can camp to obtain limited services, to originate emergency calls only, to receive ETWS notification only, and / or to receive CMAS notification only. Limited services may include originating emergency calls and receiving ETWS / CMAS notifications. For specific deployments (e.g., SNPN), an acceptable cell may be a specific cell (e.g., an SNPN-only cell) in which a UE (e.g., a legacy UE, an advanced UE without NPN support, an advanced UE with NPN support but operating in normal PLMN mode, a UE with a selected / registered SNPN ID, a UE with a selected / registered PLMN ID) may camp to receive an ETWS / CMAS notification only but not to perform emergency services (e.g., originate emergency calls). Camped in any cell state in the SNPN Once the UE (e.g., the UE in SNPN access mode) finds / camps in an acceptable cell, the UE (e.g., the UE in SNPN access mode) can transition to RRC_IDLE (if the UE was in RRC_INACTIVE) and enter the camped state in any cell state (e.g., the camped state in any cell state 116 in Figure IB). Once the UE (e.g., the UE in SNPN access mode) finds / camps in an acceptable cell, the UE (e.g., the UE in SNPN access mode) can remain in RRC_INACTIVE (if the UE was in RRC_INACTIVE) and enter the camped state in any cell state. Once the UE (e.g., the UE in SNPN access mode) finds / camps in an acceptable cell, the UE (e.g., the UE in SNPN access mode) can remain in RRC_IDLE state (if the UE was in RRC_IDLE) and enter the camped state in any cell state. During the camped state in any cell state (e.g., camped in any cell state 116 in Figure IB), the UE can activate and perform the cell reselection evaluation process (e.g., cell reselection evaluation process 118 in Figure IB). If no acceptable cell is found during the cell reselection evaluation process, the UE can enter the any cell selection state (e.g., any cell selection state 114 in Figure IB). If an acceptable cell is found during the cell reselection evaluation process, the UE can enter the camped state in any cell state (e.g., camped in any cell state 116 in Figure IB). If a suitable cell is found, the UE can enter the normally camped state (e.g., normally camped state 106 in Figure 1A).If the UE in SNPN access mode is changed to non-SNPN access mode, the UE may switch to RRC_IDLE if the UE was in RRC_INACTIVE (or remain RRC_IDLE if the. QPfrZ Ln / Zznz / E / YIAI UE was in RRC_IDLE) and perform the PLMN selection. If the UE is assigned a selected PLMN during the change from SNPN access mode to non-SNPN access mode, the UE may not perform the PLMN selection. The UE can directly perform the cell (re)selection based on the selected PLMN. Therefore, if the UE is assigned a selected PLMN during the mode change (from SNPN access mode to non-SNPN access mode) while camped in any cell state, the UE can directly enter / remain in RRC_IDLE and perform the cell (re)selection (e.g., initial cell selection 102 or stored information cell selection 104 in Figure 1A). Selecting a cell in transition to RRC_IDLE or RRC_INACTIVE state When returning to RRC_IDLE after the UE transitioned to RRC_CONNECTED from the camped state in any cell state, the UE may attempt to camp in an acceptable cell according to the redirected carrier information (e.g., a RedirectedCarrierInfo IE), if included in the RRC release message. If the UE cannot find an acceptable cell, it is allowed to camp in any acceptable cell within the specified RAT. If the RRC release message does not contain the redirected carrier information, the UE may attempt to select an acceptable cell on an NR frequency. If none is found, the UE may attempt to camp in any acceptable cell within the specified RAT. QPfrZ Ln / Zznz / E / YIAI acceptable cell according to the above, the UE can continue searching for an acceptable cell of any PLMN in the selection state of any cell (e.g., the selection state of any cell 114 in Figure IB). For the UE in SNPN access mode, when it returns to RRC_IDLE after transitioning to RRC_CONNECTED from the camped-in-any-cell-state state (e.g., camped-in-any-cell-state 116 in Figure IB), the UE may attempt to camp in an acceptable cell according to the redirected bearer information (if the redirected bearer information is included in the RRC release message that the UE receives from the network (e.g., service cell)). The redirected bearer information can be either NR bearer information or E-UTRA bearer information, which is described based on an election data structure defined in Abstract Syntax Notation One (ASN.1). If the redirected carrier information includes NR carrier information, the UE in SNPN access mode may attempt to camp in an acceptable cell or a suitable cell that supports (only / at least) SNPN on the NR carrier. The found acceptable / camped cell and / or the suitable cell may then be connected to a 5GC network. If the redirected carrier information includes QPfrZ Ln / Zznz / E / YIAI E-UTRA carrier information: The UE in SNPN access mode may attempt to camp in an acceptable cell and / or a suitable cell that supports (only / at least) SNPN on the E-UTRA carrier. The found / camped acceptable cell and / or suitable cell may be connected to a 5GC network. If cnType IE is absent, the UE may implicitly attempt to camp in an acceptable cell and / or a suitable cell that supports (only / at least) SNPN and is connected to a 5GC network. If no acceptable cell is found, the UE in SNPN access mode can continue searching for an acceptable cell from any SNPN in the any cell selection state. If no acceptable cell is found, the UE in SNPN access mode can continue searching for an acceptable cell from any PLMN in the any cell selection state, with or without an SNPN access mode change. Note that if no acceptable cell is found, the SNPN access mode change can be triggered, and the UE in SNPN access mode can switch to non-SNPN access mode. For a UE in non-SNPN access mode, if no acceptable cell is found, the SNPN access mode change can be triggered, and the UE in non-SNPN access mode can switch to SNPN access mode. An example data structure of RedirectedCarrierInfo (IE) is illustrated in QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ Table 1. Table 1 QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ RedirectedCarrierlnfo ::= nr eutra} CHOICE EUTRA, { CarrierlnfoNR, RedirectedCarrierlnfo- RedirectedCarrierlnfo-EUTRA eutraFrequency cnType} SEQUENCE { ARFCN-ValueEUTRA, ENUMERATED {epc,fiveGC} OPTIONAL - Need N CarrierlnfoNR ::= carrierFreq ssbSubcarrierSpacing smtc} SEQUENCE { ARFCN-ValueNR, SubcarrierSpacing, SSB-MTC OPTIONAL NeedS Cells with cell reservations, access restrictions, or unsuitable for normal camping If the highest-ranking cell or the best cell according to the absolute priority reselection rules is an intra-frequency or inter-frequency cell that is unsuitable because it is part of the 5GS Prohibited TA Roaming List or belongs to a PLMN that is not indicated as equivalent to the registered PLMN or belongs to a If an SNPN is not listed as equivalent to the registered / selected SNPN, or if it belongs to a CAG not listed as equivalent to the manually selected CAG (ID), the UE (e.g., a UE in SNPN access mode or non-SNPN access mode) may disregard this cell and other cells (e.g., intrafrequency cells) on the same frequency as candidates for reselection for up to 300 seconds. If the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) enters the selection state for any cell, any limitations (e.g., the limitation prohibiting cells (intrafrequency) from being selected as candidates for reselection for up to 300 seconds) may be removed. When the UE is operating in unlicensed spectrum, if the highest-ranking or best cell according to absolute priority reselection rules is an intra-frequency or inter-frequency cell that is unsuitable because it is part of the 5GS prohibited TA list for roaming, or belongs to a PLMN that is not indicated as equivalent to the registered PLMN, or belongs to an SNPN that is not indicated as equivalent to the registered / selected SNPN, or belongs to a CAG that is not indicated as equivalent to the manually selected CAG (ID), the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) may disregard this The QPfrZ Ln / Zznz / E / YIAI cell may be considered a candidate for reselection for up to 300 seconds, but the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) may consider other cells (e.g., intrafrequency cells) on the same frequency as the candidates for reselection. If the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) enters the selection state for any cell, any such limitation may be removed. When the UE is operating in the licensed spectrum, if the highest-ranking cell or the best cell according to the absolute priority reselection rules is an intra-frequency or inter-frequency cell that is unsuitable because it is part of the 5GS Prohibited TA Roaming List, or belongs to a PLMN that is not indicated as equivalent to the registered PLMN, or belongs to an SNPN that is not indicated as equivalent to the registered / selected SNPN, or belongs to a CAG that is not indicated as equivalent to the manually selected CAG (ID), the UE (e.g., the UE in SNPN access mode or in non-SNPN access mode) may disregard this cell and other cells (e.g., intra-frequency cells) on the same frequency as the candidates for reselection for up to 300 seconds.If the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) enters the selection state of any cell, it can be deleted. QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ any limitations. When the UE is operating in the licensed spectrum, if the highest-ranking or best cell according to absolute priority reselection rules is an intra-frequency or inter-frequency cell that is unsuitable because it is part of the 5GS roaming prohibited TA list, or belongs to a PLMN not listed as equivalent to the registered PLMN, or belongs to an SNPN not listed as equivalent to the registered / selected SNPN, or belongs to a CAG not listed as equivalent to the manually selected CAG (ID), the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) may not consider this cell as a candidate for reselection for up to 300 seconds. However, the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) may consider other cells (e.g., intra-frequency cells) on the same frequency as the candidates for reselection.If the UE (e.g., the UE in SNPN access mode, the UE in non-SNPN access mode) enters the selection state of any cell, any limitation can be removed. Intrafrequency reselection indicator management An intrafrequency reselection indicator can be used to control the selection / reselection of cells to intrafrequency cells when the higher-range cell is restricted. QPfrZ ίη / ZZΖΠZ / Β / YΙΛΙ or is treated as restricted by the UE. The intrafrequency reselection indicator can be set to a first value indicating that intrafrequency cell reselection is not allowed, or it can be set to a second value indicating that intrafrequency cell reselection is allowed. The intrafrequency reselection indicator can be an IE IntraFreqReselection that is in the format ENUMERATED {allowed, notAllowed}, where ENUMERATED is an ASN.1 type for listing a limited set of values. In this case, the enumerated value of notAllowed can refer to the first value, and the enumerated value of allowed can refer to the second value. UE in SNPN access mode The UE in SNPN access mode may not ignore the IntraFreqReselection IE broadcast by an SNPN cell in the system information (e.g., in a MIB, in SIB1, in a specific SNPN system information block) in the licensed spectrum. The UE in SNPN access mode may consider the SNPN cell as the restricted cell if the cellBarred in the acquired MIB is set to barred. Furthermore, if the IntraFreqReselection IE is set to notAllowed, the UE in SNPN access mode may consider reselecting the cell to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that QPfrZ ίη / ZZΖΠZ / E / YΙΛΙ support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments and / or other cells that support at least PNI-NPN and PLMN deployments) on the same frequency as notAllowed.If the IntraFreqReselection IE is not set to notAllowed (for example, if the IntraFreqReselection IE is set to Allowed), the UE in SNPN access mode may consider cell reselection to other cells (for example, other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. The UE in SNPN access mode can ignore the IntraFreqReselection IE broadcast by an SNPN cell in the system information (for example, in a MIB, in SIB1, in an SNPN-specific system information block) in unlicensed spectrum. The UE in SNPN access mode can consider the SNPN cell as the restricted cell if the cellBarred in the acquired MIB is set to barred. Furthermore, if the IntraFreqReselection IE is set to notAllowed or Allowed, the UE in SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. For example, the intraFreqReselection IE can be interpreted by the UE in SNPN access mode as allowed, if the SNPN cell is restricted because the registered / selected SNPN does not match one of the SNPN IDs in the system information (e.g., SIB1, SNPN-specific system information block), and / or if SIB1 is not decoded by the UE in SNPN access mode.Alternatively, if the intraFreqReselection IE is set to notAllowed or Allowed, the UE in SNPN access mode may consider reselecting from the cell to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support). QPfrZ Ln / Zznz / E / YIAI (at least PNI-NPN and PLMN displays) on the same frequency as notAllowed. For example, intraFreqReselection IE can be interpreted by the UE in SNPN access mode as notAllowed if the SNPN cell is restricted because the registered / selected SNPN does not match one of the SNPN IDs in the system information (e.g., SIB1, SNPN-specific system information block), and / or if SIB1 is not decoded by the UE in SNPN access mode. The UE in SNPN access mode may not ignore the intraFreqReselection IE broadcast by an SNPN cell in the system information (e.g., in a MIB, in SIB1, in a specific SNPN system information block) in the unlicensed spectrum. The UE in SNPN access mode may consider the SNPN cell as the restricted cell if the cellBarred in the acquired MIB is set to barred.Additionally, if the intraFreqReselection IE is set to notAllowed, the UE in SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. If the intraFreqReselection IE is not set to notAllowed (for example, if the intraFreqReselection IE is set to Allowed), the UE in SNPN access mode may consider cell reselection to other cells (for example, other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. The UE in SNPN access mode may not ignore the intraFreqReselection IE broadcast by a non-SNPN cell in the system information (e.g., in a MIB, in SIB1, in a specific SNPN system information block) in the licensed spectrum. The UE in SNPN access mode may consider the non-SNPN cell as the restricted cell if the cellBarred in the acquired MIB is set to barred. Furthermore, if the intraFreqReselection IE is set to notAllowed, the UE in SNPN access mode may consider reselecting the cell to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that QQfrZ ίΠ / ZZΖηZ / E / YΙΛΙ support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments and / or other cells that support at least PNI-NPN and PLMN deployments) on the same frequency as notAllowed. If the intraFreqReselection IE is not set to notAllowed (for example, if the IntraFreqReselection IE is set to Allowed), the UE in SNPN access mode may consider cell reselection to other cells (for example, other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. The UE in SNPN access mode can ignore the intraFreqReselection IE broadcast by a non-SNPN cell (e.g., a CAG-only cell, a PLMN cell, or a cell that supports PNI-NPN and PLMN deployments) in the system information (e.g., in a MIB, in SIB1, or in an SNPN-specific system information block) in the licensed spectrum (or in unlicensed spectrum). The UE in SNPN access mode can consider the non-SNPN cell as the restricted cell if the cellBarred setting in the acquired MIB is set to barred. Additionally, if the intraFreqReselection IE is set to notAllowed or Allowed, the UE in SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. For example, the intraFreqReselection IE can be interpreted by the UE in SNPN access mode as Allowed, if the SNPN cell is restricted due to the condition when SIB1 is not decoded by the UE in SNPN access mode.Alternatively, if the IntraFreqReselection IE is set to notAllowed or Allowed, the UE in SNPN access mode can consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed. For example, the... QPfr7 ίη / 77Π7 / E / YΙΛΙ intraFreqReselection IE can be interpreted by the UE in SNPN access mode as notAllowed, if the SNPN cell is restricted due to the condition that SIB1 is not decoded by the UE in SNPN access mode. The UE in SNPN access mode cannot ignore the IntraFreqReselection IE broadcast by a non-SNPN cell (e.g., a CAG-only cell, a PLMN cell, or a cell supporting PNI-NPN and PLMN deployments) in the system information (e.g., in a MIB, in SIB1, or in a specific SNPN system information block) in the licensed spectrum. The UE in SNPN access mode may consider the non-SNPN cell as the restricted cell if the cellBarred setting in the acquired MIB is set to barred.Additionally, if the intraFreqReselection IE is set to notAllowed, the UE in SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed.If the intraFreqReselection IE is set to Allowed, the UE in SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. UE in non-SNPN access mode The UE that is not in SNPN access mode (i.e., the A UE in non-SNPN access mode cannot ignore the intraFreqReselection IE broadcast by a CAG cell (e.g., a CAG-only cell, a cell supporting at least PNI-NPN deployments, a cell supporting at least SNPN and PNI-NPN deployments, a cell supporting SNPN and PNINPN and PLMN deployments) in the system information (e.g., in the MIB, in SIB1, in the PNINPN-specific system information block) in the licensed spectrum. The UE in non-SNPN access mode can consider the CAG cell as the restricted cell if the cellBarred in the acquired MIB is set to barred.Additionally, if the IntraFreqReselection IE is set to not Allowed, the UE in an SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed.If the IntraFreqReselection IE is not set to notAllowed (for example, if the IntraFreqReselection IE is set to Allowed), the UE that is not in SNPN access mode may consider cell reselection to other cells (for example, other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. The UE in non-SNPN access mode can ignore the IntraFreqReselection IE broadcast by a CAG cell (e.g., a CAG-only cell, a cell supporting at least PNI-NPN deployments, a cell supporting at least SNPN and PNI-NPN deployments, or a cell supporting SNPN, PNI-NPN, and PLMN deployments) in the system information (e.g., in a MIB, in SIB1, or in a PNI-NPN-specific system information block) in the unlicensed spectrum. The UE in non-SNPN access mode can consider the CAG cell as the restricted cell if the cellBarred setting in the acquired MIB is set to barred.Additionally, if the IntraFreqReselection IE is set to notAllowed or Allowed, the UE in non-SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed.For example, the IntraFreqReselection IE may be interpreted by the UE in non-SNPN access mode as allowed, if the cell is restricted because the registered / selected CAG (or all CAG IDs in the allowed CAG ID list) does not match one of the CAG IDs in the system information (e.g., SIB1 or a PNI-NPN-specific system information block), and / or if SIB1 is not decoded by the UE in non-SNPN access mode.Alternatively, if the IntraFreqReselection IE is set to notAllowed or Allowed, the UE in non-SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed.For example, the IntraFreqReselection IE may be interpreted by the UE in non-SNPN access mode as notAllowed, if the cell is restricted because the registered / selected CAG (or all CAG IDs in the allowed CAG ID list) does not match one of the CAG IDs in the system information (e.g., SIB1 or a PNI-NPN-specific system information block), and / or if SIB1 is not decoded by the UE in non-SNPN access mode. The UE in non-SNPN access mode cannot ignore the IntraFreqReselection IE broadcast by a non-CAG cell (e.g., an SNPN-only cell, a PLMN-only cell, a cell supporting at least SNPN deployments, or a cell supporting at least SNPN and PLMN deployments) in the system information (e.g., in a MIB, in SIB1, or in a PNI-NPN-specific system information block) in a licensed spectrum. The UE in non-SNPN access mode may consider the non-CAG cell as the restricted cell if the cellBarred setting in the acquired MIB is set to barred. Furthermore, if the IntraFreqReselection IE is set to notAllowed, the UE in a QPfrZ Ln / Zznz / E / YIAI non-SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed.If the intraFreqReselection IE is not set to notAllowed (for example, if the intraFreqReselection IE is set to Allowed), the UE in non-SNPN access mode may consider cell reselection to other cells (for example, other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. The UE in non-SNPN access mode can ignore the intraFreqReselection IE broadcast by a non-CAG cell (e.g., an SNPN-only cell, a PLMN-only cell, a cell that supports at least SNPN deployments, or a cell that supports at least SNPN and PLMN deployments) in the system information (e.g., in a MIB, in a SUBI, or in a PNI-NPN-specific system information block) in the unlicensed spectrum. The UE in non-SNPN access mode can treat the non-CAG cell as the restricted cell if the cellBarred setting in the acquired MIB is set to barred.Additionally, if the intraFreqReselection IE is set to notAllowed or Allowed, the UE in non-SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as allowed. For example, the intraFreqReselection IE can be interpreted by the UE in non-SNPN access mode as allowed, if the cell is restricted due to the condition when SIB1 is not decoded by the UE in non-SNPN access mode.Alternatively, if the intraFreqReselection IE is set to notAllowed or Allowed, the UE in non-SNPN access mode may consider cell reselection to other cells (e.g., other SNPN-only cells, other CAG-only cells, other PLMN-only cells, other cells that support at least SNPN deployments, other cells that support at least PNI-NPN deployments, other cells that support at least PLMN deployments, other cells that support at least SNPN and PNI-NPN deployments, other cells that support at least SNPN and PLMN deployments, and / or other cells that support at least PNI-NPN and PLMN deployments) at the same frequency as notAllowed. For example, the IntraFreqReselection IE can be interpreted by the UE in non-SNPN access mode as notAllowed, if the cell is restricted due to the condition when SIB1 is not decoded by the UE in non-SNPN access mode. Figure 2 illustrates a flowchart for a method 200 performed by a UE for cell (re)selection, according to one implementation of this description. Although actions 202, 204, 206, and 208 are illustrated as separate actions represented as independent blocks in Figure 2, these separately illustrated actions should not be interpreted as necessarily order-dependent. The order in which the actions are performed in Figure 2 is not intended to be interpreted as a limitation, and any number of the described blocks may be combined in any order to implement the method or an alternative method. Furthermore, each of actions 202, 204, 206, and 208 may be performed independently of other actions and may be omitted in some implementations of this description. In action 202, the UE can receive an intrafrequency reselection indicator in a cell's MIB at a specific frequency. The intrafrequency reselection indicator can be the intraFreqReselection IE described above, or any other parameter / field that indicates whether intrafrequency cell reselection is permitted. For example, the intrafrequency reselection indicator can be set to a first value indicating that intrafrequency cell reselection is not permitted, or it can be set to a second value indicating that intrafrequency cell reselection is permitted. If the intrafrequency reselection indicator (or the intraFreqReselection IE) is a one-bit indicator, the first and second values ​​can be binary values ​​(for example, 0 and 1) from the one-bit indicator. The cell (in which the intrafrequency reselection indicator is received) may belong to a plurality of networks.The cell can be operated by multiple networks, for example, RAN sharing or network sharing. Multiple networks may involve NPN deployments. For example, the multiple networks (to which the cell belongs) may include a PLMN and an SNPN. The cell can broadcast the identities of the networks that operate it. In action 204, the UE can determine if the cell belongs to a UE network to which the UE is registered (referred to as the UE's registered network in this description). QPfrZ ίη / ΖΖΠΖ / Ε / ΥΙΛΙ The network (i.e., the registered network of the UE) can be one of a PLMN and one SNPN. In action 206, the UE can designate other cells on the specified frequency as restricted cells that the UE cannot select in an intra-frequency cell reselection, in a case where the cell belongs to the network (i.e., the UE's registered network) and the intra-frequency reselection indicator is set to a first value (e.g., notAllowed, if the intra-frequency reselection indicator is the intraFreqReselection IE) indicating that the intra-frequency cell reselection is not permitted. The other cells described in action 206 and the cell described in action 202 can be considered intra-frequency cells since these cells operate on the same frequency (specific frequency). In action 208, the UE can perform intrafrequency cell reselection to other cells on the specified frequency, in a case where the cell does not belong to the network (i.e., the UE's registered network) or the intrafrequency reselection indicator is set to the second value (e.g., Allowed, if the intrafrequency reselection indicator is the IntraFreqReselection IE) indicating that intrafrequency cell reselection is permitted. According to method 200, the EU can follow the indication of the intrafrequency reselection indicator QPfrZ Ln / Zznz / E / YIAI (only) when the intrafrequency reselection indicator is from (or associated with) the UE's registered network. If the intrafrequency reselection indicator is not from (or associated with) the UE's registered network, the UE can ignore the intrafrequency reselection indicator, regardless of whether the intrafrequency reselection indicator is set to the first or second value. For example, if the intrafrequency reselection indicator is not from (or associated with) the UE's registered network, intrafrequency cell reselection can still be performed even if the intrafrequency reselection indicator is set to the first value, which indicates that intrafrequency cell reselection is not permitted. Since the UE can follow or ignore an intra-frequency reselection indicator depending on whether the indicator originates from the registered network, unnecessary cell reselection restrictions / rules (e.g., restrictions from an unregistered network) can be avoided, thereby improving cell reselection efficiency. This efficiency can also save energy for both the network and the UE, especially the UE. Furthermore, through the mechanism described above, even if a cell belongs to multiple networks / operators simultaneously, each network can correctly indicate to its registered UEs whether reselection is permitted. QPfrZ ίη / ZZΖΠZ / Β / YΙΛΙ performs intra-frequency selection by transmitting the intra-frequency selection indicator, without transmitting additional signaling. Therefore, signaling overload can be reduced. Reducing signaling overload can also save network and UE power, especially network power. Figure 3 illustrates a flowchart for an intrafrequency cell reselection method 300 according to an implementation of the present description. The intrafrequency cell reselection may correspond to action 208 of method 200 illustrated in Figure 2. The intrafrequency cell reselection can be performed when the UE is in SNPN access mode and operating in the licensed spectrum. In action 302, during intra-frequency cell reselection, the UE can determine a higher-ranking cell from among the other cells at the specified frequency (for example, the specific frequency described in action 202 in Figure 2) according to a priority order of the other cells. In action 304, during in-frequency cell reselection, the UE can determine if the higher-ranking cell belongs to an SNPN that is the same as an SNPN registered or selected by the UE (for example, the UE is in SNPN access mode). In action 306, during intra-frequency cell reselection, the UE can determine the other QPfr7 iP / ZZΖ / E / YILI cells are restricted for a predetermined period of time, in cases where the highest-ranking cell does not belong to the SNPN. The predetermined period can be 300 seconds. Determining a higher-ranking cell and verifying its ownership during intrafrequency cell reselection can improve latency and save UE power during cell reselection. In intrafrequency cell reselection, the UE may determine one (or more) of the other cells as suitable cells in a case where (1) the (or more) of the other cells belongs to the SNPN, (2) a signal quality of the (or more) of the other cells meets a cell selection criterion, (3) the (or more) of the other cells is not restricted from selection as suitable cells, and (4) the (or more) of the other cells does not belong to an SNPN Prohibited Tracking Area (TA). Determining a suitable cell for SNPN can improve cell reselection efficiency and facilitate network access. As described above, if the UE enters the selection state for any cell, any limitations can be removed (for example, the limitation prohibiting cells (intrafrequency) from being selected as candidates for reselection for up to 300 seconds). A corresponding process is illustrated in Figure 4. QPfr7 ίη / ΖΖΠΖ / Ε / ΥΙΛΙ Figure 4 illustrates a flowchart for a method 400 for a UE entering the any cell selection state according to an implementation of the present description. As illustrated in Figure 4, in action 402, the UE may enter an any cell selection state (e.g., the any cell selection state in Figures 1A and 1B) if a suitable cell is not found for intrafrequency cell reselection. In action 404, the UE can determine the other cells at the specified frequency (for example, the specific frequency described in action 202 in Figure 2) as unrestricted cells after the UE enters the cell selection state, in a case where the other cells are determined as restricted cells before the UE enters the cell selection state. Unrestricted cells can refer to the cells that the UE can select in intrafrequency cell reselection. Figure 5 is a schematic diagram illustrating cells at the same frequency and different frequencies. As illustrated in Figure 5, cells 502, 504, 506, and 508 are at the same frequency f1. In other words, cells 502, 504, 506, and 508 are intrafrequency cells with respect to each other. Cell 510 is at a different frequency f2 than cells 502, 504, 506, and 508. Therefore, for each of cells 502, 504, 506, and 508, cell 510 is an interfrequency cell. Once the intrafrequency cell (re)selection is performed at frequency fl, the UE can attempt to select a suitable cell to camp in from intrafrequency cells 502, 504, 506 and 508 at frequency f 1. For example, if the UE receives the intrafrequency reselection indicator from cell 502, and cell 502 does not belong to the UE's registered network and / or the intrafrequency reselection indicator is set to a second value (e.g., Allowed, if the intrafrequency reselection indicator is the intraFreqReselection IE) indicating that intrafrequency cell reselection is permitted, the UE can perform intrafrequency cell (re)selection to search for a suitable cell from among other cells (e.g., cells 504, 506, and 508) on the same frequency fl as cell 502. The UE can determine a priority order for cells 504, 506, and 508 on frequency fl (e.g., based on their respective signal qualities and / or other criteria described above).If the cell priority order (from highest to lowest) is cell 504 first, then cell 506, and then cell 508, the UE can first determine if the highest-ranking cell (i.e., cell 504) belongs to an SNPN that is the same as a registered or selected SNPN of the UE (if the UE is in SNPN access mode). QPfrZ Ln / Zznz / E / YIAI If cell 504 does not belong to the SNPN (which is the same as a registered or UE-selected SNPN), the UE may directly consider all cells 504, 506, and 508 on the frequency fl to be restricted cells for a predetermined period of time (e.g., 300 seconds). Conversely, if one of cells 504, 506, and 508 meets the following four conditions: (1) the cell belongs to the SNPN (which is the same as a registered or UE-selected SNPN), (2) the cell's signal quality meets a cell selection criterion, (3) the cell is not restricted from selection as a suitable cell(s), and (4) the cell does not belong to a prohibited TA of the SNPN (which is the same as a registered or UE-selected SNPN), the cell may be determined as a suitable cell in which to camp. The following can be used to further describe terms, examples, modalities, implementations, actions, and / or behaviors: The terms network, RAN, cell, camped cell, service cell, BS, gNB, eNB, and ng-eNB can be used interchangeably. Some of these terms may refer to the same network entity. The mechanisms described herein can be applied to any RAT. The RAT may be (but is not limited to) NR, NR-U, LTE, 5GC-connected E-UTRA, 5GC-connected LTE, EPC-connected E-UTRA, and EPC-connected LTE. The proposed mechanism can be applied to UE in public networks. QPfrZ ίη / ΖΖΠΖ / Β / ΥΙΛΙ or on private networks (for example, NPN, SNPN and PNI-NPN). The UE behaviors described in this description can be used for licensed frequency and / or unlicensed frequency. System information (SI) may refer to MIB, SIB1, and other SIs. The minimum SI may include MIB and SIB1. Other SIs may refer to SIB3, SIB4, SIB5, and other SIBs (e.g., SNPN-specific SIB, PNI-NPN-specific SIB). Dedicated signaling can refer to (but is not limited to) RRC messages. For example, RRC Configuration Request (Connection) message, RRC Configuration (Connection) message, RRC Configuration (Connection) Complete message, RRC Reconfiguration (Connection) message, RRC Reconfiguration (Connection) message including mobility control information, RRC Reconfiguration message without mobility control information, RRC Reconfiguration message including configuration with synchronization, RRC Reconfiguration (Connection) Complete message, RRC Resume Request (Connection) message, RRC Resume (Connection) message, RRC Resume (Connection) message, RRC Reset Request (Connection) message, RRC Reset (Connection) message, RRC Reset (Connection) Complete message, RRC Reject (Connection) message, RRC Release (Connection) message, RRC Release without the QQfrZ iΠ / ZZΖηZ / E / YΙΛΙ configuration with synchronization within, RRC Release message including suspension configuration, RRC Reconfiguration message without suspension configuration, RRC System Information Request message, UE Support Information message, UE Capacity Inquiry message, UE Capacity Information message. The UE RRC_CONNECTED, UE RRC_INACTIVE, and UE RRC_IDLE can enforce the UE behaviors described in this description. In general, the mechanisms described can be applied to the PCell and the UE. The mechanisms described in this description can be applied to the PSCell and the UE. CAG Allowed List: A list per PLMN of CAG identifiers that are allowed to be accessed by the UE. CAG Cell: A cell that broadcasts at least one CAG identifier. Non-CAG cell: A cell that does not broadcast any CAG identifier. CAG ID: identifies a CAG within a PLMN. NID: identifies an SNPN in combination with a PLMN ID. NPN: A network deployed for non-public use. SNPN registered: This is the SNPN in which certain location registration results have occurred. Selected SNPN: This is the SNPN that has been selected by the NAS layer (for example, the UE NAS layer, QPfr7 ίη / 77Π7 / Ε / ΥΙΛΙ the ÑAS layer of the NC), either manually or automatically. SNPN access mode: operating mode where the UE only selects SNPN. SNPN ID: an identifier of an SNPN comprising a PLMN ID and a NID. PNI-NPN ID: an identifier of a PNI-NPN comprising a PLMN ID and a CAG. A UE in non-SNPN access mode can be equivalent to a UE not in SNPN access mode. A UE in non-SNPN access mode can be equivalent to a UE that does not operate in SNPN access mode. A UE in SNPN access mode can be equivalent to a UE that operates in SNPN access mode. Figure 6 is a block diagram illustrating a Node 600 for wireless communication according to various aspects of the present description. As illustrated in Figure 6, a Node 600 may include a transceiver 620, a processor 628, memory 634, one or more presentation components 638, and at least one antenna 636. The Node 600 may also include a radio frequency (RF) spectrum band module, a BS communications module, a network communications module, a system communications management module, input / output (I / O) ports, I / O components, and a power supply (not illustrated in Figure 6). Each component can communicate directly or indirectly with each other via one or more 640 buses. QQfrZ ίη / ZZΖΠZ / Β / YΙΛΙ node 600 can be a UE or a BS that performs various functions described with reference to figures 1 to 5. The 620 transceiver has a 622 transmitter (e.g., transmit / transmit circuitry) and a 624 receiver (e.g., receive / receive circuitry) and can be configured to transmit and / or receive time and / or frequency resource partitioning information. The 620 transceiver can be configured to transmit in different types of subframes and slots, including but not limited to usable, non-usable, and flexibly usable subframe and slot formats. The 620 transceiver can also be configured to receive data and control channels. The Node 600 can include a variety of computer-readable media. Computer-readable media can be any available media that can be accessed by the Node 600 and includes volatile (and / or non-volatile) and removable (and / or non-removable) media. Computer-readable media can include computer storage media and communication media. Computer storage media can include both volatile (and / or non-volatile) and removable (and / or non-removable) media implemented using any method or technology for storing information such as computer-readable instructions, data structures, program modules, or data. QPfrZ ίη / ΖΖΠΖ / Β / ΥΙΛΙ Computer storage media can include RAM, ROM, EPROM, EEPROM, flash memory (or other memory technology), CD-ROM, digital versatile discs (DVDs) (or other optical disc storage), magnetic cassettes, magnetic tape, magnetic disk storage (or other magnetic storage devices), etc. Computer storage media may not include a propagated data signal. Communication media can typically incorporate computer-readable instructions, data structures, program modules, or other data into a modulated data signal such as a carrier wave or other transport mechanism and include any means of information distribution. The term modulated data signal can mean a signal that has one or more of its characteristics adjusted or changed in such a way as to encode information into the signal. Communication media can include wired media such as a wired network or direct wired connection, and wireless media such as acoustic, RF, infrared, and other wireless media. Combinations of any of the components listed above should also be included within the scope of computer-readable media. Memory 634 may include computer storage media in the form of volatile and / or non-volatile memory. Memory 634 may be removable, non-removable, or a combination of both. Example memory may include solid-state memory, hard disks, optical disk drives, etc. As illustrated in Figure 6, memory 634 may store a computer-readable and / or computer-executable program 632 (e.g., software code) that is configured to cause the processor 628 to perform various functions described herein, for example, with reference to Figures 1 through 5. Alternatively, the program 632 may not be directly executable by the processor 628 but may be configured to cause the node 600 (e.g., when compiled and executed) to perform various functions described herein. The processor 628 (for example, which has processing circuitry) may include an intelligent hardware device, for example, a Central Processing Unit (CPU), a microcontroller, an ASIC, etc. The processor 628 may include memory. The processor 628 can process the data 630 and program 632 received from memory 634, and the information transmitted and received through the transceiver 620, the baseband communications module, and / or the network communications module. The processor 628 can also process the information to send to the transceiver 620 for transmission via antenna 636 to the network communications module for transmission to a CN. One or more 638 display components can present data prompts to a person or another device. Examples of 638 display components may include a display device, a loudspeaker, a printing component, a vibrating component, etc. In light of the foregoing description, it is evident that various techniques can be used to implement the described concepts without deviating from their scope. Furthermore, since the concepts have been described with specific reference to particular implementations, a person skilled in the art can recognize that changes in form and detail can be made without deviating from the scope of those concepts. As such, the implementations described are considered in all respects to be illustrative and not restrictive. It should also be understood that this description is not limited to the specific implementations described. Even so, many restructurings, modifications, and substitutions can be made without deviating from the scope of this description. It is hereby stated that, as of this date, the best method known to the applicant for putting the present invention into practice is the one that is clear from the present description of the invention.

Claims

1. A method performed by a user equipment (UE) for cell reselection, characterized in that it comprises: receiving an intrafrequency reselection indicator in a master information block (MIB) of a cell at a specified frequency; determining whether the cell belongs to a network to which the UE is registered; determining other cells at the specified frequency as restricted cells that the UE cannot select in an intrafrequency cell reselection, in the event that the cell belongs to the network and the intrafrequency reselection indicator is set to a first value indicating that intrafrequency cell reselection is not permitted;and perform intrafrequency cell reselection to the other cells on the specified frequency, in a case where the cell does not belong to the network or the intrafrequency reselection indicator is set to a second value indicating that intrafrequency cell reselection is permitted.

2. The method according to claim 1, characterized in that the network is one of a Public Land Mobile Network (PLMN) and a Single Non-Public Network (SNPN).

3. The method according to claim 1, characterized in that the cell belongs to a plurality of networks including a Public Land Mobile Network (PLMN) and a Single Non-Public Network (SNPN).

4. The method according to claim 1, characterized in that the performance of intrafrequency cell reselection comprises: determining a higher-ranking cell from the other cells at the specified frequency according to a priority order of the other cells; determining whether the higher-ranking cell belongs to a single non-public network (SNPN) that is the same as a registered or selected UE SNPN; and determining the other cells as the restricted cells for a predetermined period of time, in the event that the higher-ranking cell does not belong to the SNPN.

5. The method according to claim 4, characterized in that performing the intrafrequency cell reselection comprises determining one of the other cells as a suitable cell in a case where the one of the other cells belongs to the SNPN, a signal quality of the one of the other cells meets a cell selection criterion, the one of the other cells is not restricted from selection as the suitable cell, and the one of the other cells does not belong to a prohibited Tracking Area (TA) of the SNPN.

6. The method according to claim 5, characterized in that the intrafrequency cell reselection is performed when the UE is set to be in an SNPN access mode and operates in a licensed spectrum.

7. The method according to claim 5, characterized in that it further comprises: entering an any cell selection state in an instance where a suitable cell for intrafrequency cell reselection is not found; and determining the other cells as unrestricted cells after the UE enters the any cell selection state, in an instance where the other cells are determined as the restricted cells before the UE enters the any cell selection state.

8. The method according to claim 4, characterized in that the predetermined time period is 300 seconds.

9. A User Equipment (UE) for cell reselection, characterized in that it comprises: a transceiver configured to receive an intrafrequency reselection indicator in a Master Information Block (MIB) of a cell at a specified frequency; a processor coupled to the transceiver; and a memory coupled to the processor, wherein the memory stores at least one computer-executable program which, when executed by the processor, causes the processor to: determine whether the cell belongs to a network to which the UE is registered; determine other cells at the specified frequency as restricted cells which the UE may not select in an intrafrequency cell reselection, in the event that the cell belongs to the network and the intrafrequency reselection indicator is set to a first value indicating that intrafrequency cell reselection is not permitted;and perform intra-frequency cell reselection to the other cells on the specified frequency, in a case where the cell does not belong to the network or the intra-frequency reselection indicator is set to a second value indicating that an intra-frequency cell reselection is allowed.; 10. The EU in accordance with claim 9, characterized in that the network is one of a Public Land Mobile Network (PLMN) and a Single Non-Public Network (SNPN).

11. The UE according to claim 9, characterized in that the cell belongs to a plurality of networks including a Public Land Mobile Network (PLMN) and a Single Non-Public Network (SNPN).

12. The UE according to claim 9, characterized in that when the processor executes at least one computer executable program, the computer executable program causes the processor to perform intrafrequency cell reselection by: determining a higher-ranking cell from the other cells at the specified frequency according to a priority order of the other cells; determining whether the higher-ranking cell belongs to a single non-public network (SNPN) that is the same as a registered or selected SNPN of the UE; and determining the other cells as the restricted cells for a predetermined period of time, in the event that the higher-ranking cell does not belong to the SNPN.

13. The UE according to claim 12, characterized in that when the at least one computer executable program is executed by the processor, the computer executable program further causes the processor to perform intrafrequency cell reselection by determining one of the other cells as a suitable cell in a case where the one of the other cells belongs to the SNPN, a signal quality of the one of the other cells meets a cell selection criterion, the one of the other cells is not restricted from selection as the suitable QPfrZ Ln / Zznz / E / YIAI cell, and the one of the other cells does not belong to a prohibited Tracking Area (TA) of the SNPN.

14. The UE according to claim 13, characterized in that the intrafrequency cell reselection is performed when the UE is set to be in an SNPN access mode and operates in a licensed spectrum.

15. The UE according to claim 13, characterized in that when the processor executes at least one computer-executable program, the computer-executable program further causes the processor to: enter an any-cell selection state in the event that a suitable cell for intrafrequency cell reselection is not found; and determine the other cells as unconstrained cells after the UE enters the any-cell selection state, in the event that the other cells are determined as the constrained cells before the UE enters the any-cell selection state.

16. The EU according to claim 12, characterized in that the predetermined time period is 300 seconds.

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