Terminal

Abstract

The UE (200) performs a registration in a non-suitable cell that is included in the non-public mobile communication network and does not meet the conditions while being set to an access mode for a non-public mobile communication network different from the public mobile communication network. The UE (200) receives emergency information via the non-suitable cell.

Description

Technical Field

[0001] The present disclosure relates to a terminal capable of accessing a Non-Public Network (NPN). Background Art

[0002] The 3rd Generation Partnership Project (3GPP) has standardized Long Term Evolution (LTE), and has advanced the standardization of LTE-Advanced (hereinafter, including LTE-Advanced and referred to as LTE) for the purpose of further high-speedization of LTE. In addition, the standardization of the 5th generation mobile communication system (hereinafter also referred to as 5G, New Radio (NR) or Next Generation (NG)) has also been advanced.

[0003] In NR, a technology for providing Ultra-Reliable and Low-Latency Communications (URLLC) is specified.

[0004] In order to more reliably provide such URLLC, a technology using a dedicated mobile communication network (non-public mobile communication network) called Non-Public Network (NPN) instead of a public mobile communication network (PLMN: Public Land Mobile Network) has also been studied (Non-Patent Document 1).

[0005] NPN includes a Standalone NPN (SNPN) operated by an NPN operator without relying on network functions provided by a PLMN, and an NPN deployed with the support of a PLMN (appropriately referred to as non-SNPN for ease of explanation).

[0006] In addition, in SNPN, similar to PLMN, broadcasting of emergency information (which may also be referred to as Emergency notification) based on an Earthquake and Tsunami Warning System (ETWS) or a Commercial Mobile Alert System (CMAS) has also been studied.

[0007] Prior Art Documents

[0008] Non-Patent Documents

[0009] Non-Patent Document 1: "Private Network Support for NG-RAN", RP-191563, 3GPP TSGRAN Meeting #84, 3GPP, June 2019

[0010] Non-Patent Document 2: 3GPP TS 22.261 V16.8.0, 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Service requirements for the 5G system; Stage 1 (Release 16), 3GPP, June 2019

[0011] Non-Patent Document 3: "CMAS / ETWS and emergency services for SNPNs", R2-1916345, 3GPP TSG-RAN WG2 Meeting #108, 3GPP, November 2019 Summary of the Invention

[0012] For a terminal (User Equipment, UE, hereinafter appropriately referred to as SNPN access mode UE (SNPN access mode UE)) in a state capable of accessing an SNPN, specifically a state set to an access mode for an SNPN, utilization in mission-critical areas such as robots, assembly machines, and IoT (Internet of Things) devices in a factory is envisioned.

[0013] Therefore, it is considered that by broadcasting ETWS / CMAS-based emergency information to an SNPN access mode UE, automatic emergency stop of the system and the like can be achieved.

[0014] Based on the above circumstances, the following disclosure has been completed with the aim of providing a terminal that can reliably obtain emergency information even in a state capable of accessing an independent NPN (SNPN).

[0015] One aspect of the present disclosure provides a terminal (UE 200) having: a control unit (residence control unit 230) that performs residence in a non-suitable cell that is included in the non-public mobile communication network and that satisfies a condition and is not a suitable cell, in a state where an access mode is set to face a non-public mobile communication network different from the public mobile communication network; and a reception unit (radio reception unit 220) that receives emergency information via the non-suitable cell.

[0016] One aspect of the present disclosure provides a terminal (UE 200) having: a control unit (residence control unit 230) that performs residence in a public cell included in the public mobile communication network, in a state where an access mode is set to face a non-public mobile communication network different from the public mobile communication network; and a reception unit (radio reception unit 220) that receives emergency information via the public cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall schematic configuration diagram of the wireless communication system 10.

[0018] Figure 2 is a functional block configuration diagram of the UE 200.

[0019] Figure 3 is a diagram showing a schematic communication timing related to reception of emergency information based on ETWS / CMAS.

[0020] Figure 4 is a diagram showing a residence operation flow (operation example 1) of the UE 200.

[0021] Figure 5 is a diagram showing a residence operation flow (operation example 2) of the UE 200.

[0022] Figure 6 is a diagram showing a residence operation flow (operation example 3) of the UE 200.

[0023] Figure 7 is a diagram showing a residence operation flow (operation example 4) of the UE 200.

[0024] Figure 8 is a diagram showing a residence operation flow (operation example 5) of the UE 200.

[0025] Figure 9 is a diagram showing an example of the hardware configuration of the UE 200. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Hereinafter, embodiments will be described based on the drawings. In addition, the same or similar reference numerals are given to the same functions and configurations, and the description thereof will be appropriately omitted.

[0027] (1) Overall schematic structure of the wireless communication system

[0028] Figure 1 is the overall schematic structure diagram of the wireless communication system 10 involved in this embodiment. The wireless communication system 10 is a wireless communication system based on 5G New Radio (NR).

[0029] The wireless communication system 10 may include multiple mobile communication networks. Specifically, the wireless communication system 10 includes a Public Land Mobile Network 20 (hereinafter referred to as PLMN 20), a Non-Public Network 30 (hereinafter referred to as NPN 30), and a Stand-alone Non-Public Network 40 (hereinafter referred to as SNPN 40).

[0030] PLMN 20 may also be referred to as a public mobile communication network, or a mobile communication network, a public land mobile network, etc. PLMN 20 includes NPN 30 and a radio base station 100A (hereinafter referred to as gNB 100A). In addition, PLMN 20 can be interpreted as an operator (communication operator) that provides services using PLMN 20.

[0031] gNB 100A is a radio base station based on 5G (NR) and can perform 5G-based wireless communication with a user terminal 200 (User Equipment 200, hereinafter referred to as UE 200).

[0032] NPN 30 may be referred to as a non-public mobile communication network, or a non-public network, a private network, etc. NPN 30 includes a radio base station 100B (hereinafter referred to as gNB 100B).

[0033] NPN 30 can be for the sole use of private entities such as enterprises, and can be deployed in various structures using both virtual elements and physical elements. Specifically, NPN 30 can be hosted by PLMN 20 or provided as a slice of PLMN 20. In addition, NPN can be referred to as a Closed Access Group (CAG) or a Closed Subscriber Group (CSG).

[0034] The SNPN 40 is a type of NPN. In this embodiment, the SNPN 40 can be expanded into a completely independent network separate from the PLMN 20. That is, the SNPN 40 can be operated by a private entity or the like different from the operator of the PLMN 20. On the other hand, as described above, the NPN 30 can be operated by the operator of the PLMN 20. The SNPN 40 includes a radio base station 100C (hereinafter referred to as gNB 100C).

[0035] Thus, the wireless communication system 10 (5G system) can support a Non-Public Network (NPN) and support an NPN that provides coverage within a specific geographical area. The 5G system can support both physical and virtual NPNs and can support the independent operation of the NPN. On the other hand, the 5G system can provide access to the subscribed PLMN service via the NPN or access to the selected NPN service via the PLMN.

[0036] In addition, the wireless communication system 10 (5G system) supports a mechanism for UE 200 to identify and select an NPN. The UE 200 can also access the NPN 30 and the SNPN 40.

[0037] The NPN (including the SNPN) can meet higher Quality of Service (QoS) requirements and security requirements than the PLMN. In addition, as a way to protect against failures of the public network including the PLMN, the NPN can achieve separation from other networks, and such separation may be desired from the viewpoints of performance, security, privacy, and safety.

[0038] In this embodiment, the mobile communication network including the PLMN 20, the NPN 30 different from the PLMN 20, and the SNPN 40 can be simply expressed as a network. That is, the network can include the PLMN 20, the NPN 30, and the SNPN 40.

[0039] The NPN can be interpreted as a network for non-public use. In addition, a private network can also be interpreted as an isolated network that does not interact with the public network (which can include the PLMN).

[0040] The gNB 100A forms the PLMN cell C10. The gNB 100B forms the NPN cell C20. The gNB 100C forms the SNPN cell C30.

[0041] In addition, in NPN 30 and SNPN 40, similar to the PLMN, emergency information based on the Earthquake and Tsunami Warning System (ETWS) or Commercial Mobile Alert System (CMAS) (which may also be referred to as Emergency notification) can also be broadcast.

[0042] In this embodiment, a UE 200 (hereinafter referred to as an SNPN access mode UE) in a state set to the access mode for SNPN 40 can access NPN 30 or PLMN 20 and receive emergency information based on ETWS / CMAS.

[0043] In addition, the SNPN access mode UE can be interpreted as a UE operating in the SNPN access mode, not necessarily having to be in a connected state (RRC connected) with the SNPN in the radio resource control layer (RRC), and can be in an idle state (RRC idle) or an inactive state (RRC inactive).

[0044] In addition, the cells formed by gNB 100A to gNB 100C can be classified into any of the following.

[0045] · Acceptable cell: A cell in which the UE 200 camps and obtains limited service (which can also be referred to as a cell providing limited service. The same applies hereinafter). Limited service can include the broadcast of emergency information based on ETWS / CMAS.

[0046] · Suitable cell: A cell that constitutes the selected or registered PLMN, or a cell of a PLMN that constitutes an equivalent PLMN list.

[0047] · Non-suitable cell: A cell included in the NPN (including SNPN) that is not a suitable cell. In a non-suitable cell, the UE 200 can also camp and obtain limited service.

[0048] Barred cell: A cell whose residence is prohibited as indicated by the system information as specified in 3GPP TS38.331.

[0049] (2) Functional block structure of the wireless communication system

[0050] Next, the functional block structure of the wireless communication system 10 will be described. Specifically, the functional block structure of the UE 200 will be described.

[0051] Figure 2 is the functional block structure diagram of the UE 200. As Figure 2 shown, the UE 200 includes a wireless transmission unit 210, a wireless reception unit 220, a residency control unit 230, an emergency information processing unit 240, and an emergency action execution unit 250.

[0052] The wireless transmission unit 210 transmits a wireless signal according to the 5G standard. In addition, the wireless reception unit 220 receives a wireless signal according to the 5G standard.

[0053] In this embodiment, the wireless reception unit 220 can receive emergency information based on ETWS / CMAS via a non-suitable cell. In this embodiment, the wireless reception unit 220 constitutes a reception unit that receives emergency information via a non-suitable cell.

[0054] As described above, a non-suitable cell may be included in an NPN (including an SNPN). In addition, a non-suitable cell can be interpreted as a cell that is not a suitable cell.

[0055] In addition, the wireless reception unit 220 can receive emergency information via a public cell (specifically, the PLMN cell C10). In this embodiment, the wireless reception unit 220 constitutes a reception unit that receives emergency information via a public cell.

[0056] Specifically, the wireless reception unit 220 can receive the emergency information included in and transmitted in the system information (SIB: System Information Block) via this cell (non-suitable cell or public cell). In addition, when the emergency information based on ETWS / CMAS is broadcast other than via the SIB, the wireless reception unit 220 can receive information other than the SIB (for example, information using high-layer or low-layer signaling).

[0057] In addition, the wireless reception unit 220 can receive residency cell information indicating the cell in which the UE 200 should reside. Specifically, the wireless reception unit 220 can receive the SIB including the residency cell information. In addition, similar to the emergency information, when the residency cell information is broadcast other than via the SIB, information other than the SIB (for example, information using high-layer or low-layer signaling) can be received.

[0058] The residence control unit 230 controls the cell in which the UE 200 is to camp. In particular, in the present embodiment, the residence control unit 230 can perform camping in a non-suitable cell that is included in the NPN and satisfies the conditions but is not a suitable cell in a state where the UE 200 is set to an access mode for an NPN different from the PLMN 20 (specifically, the NPN 30 or the SNPN 40) (i.e., an SNPN access mode UE).

[0059] Among them, the conditions can be: the cell is not barred, or the cell selection criteria are fulfilled.

[0060] That is, the residence control unit 230 can perform camping in a state where it is set to an access mode for an independent non-public mobile communication network (specifically, the SNPN 40). In the present embodiment, the residence control unit 230 constitutes a control unit that performs camping in a non-suitable cell.

[0061] In addition, the residence control unit 230 can perform camping in a public cell (specifically, the PLMN cell C10) included in the PLMN 20 in a state where it is set to an access mode for the NPN 30 or the SNPN 40. In the present embodiment, the residence control unit 230 constitutes a control unit that performs camping in a public cell.

[0062] In addition, camping in this cell can be interpreted as a state in which the UE 200 can handle incoming calls to the UE 200 in this cell. The UE 200 can release the camping state and start communicating with the network when it receives a paging destined for the UE 200.

[0063] When the emergency information based on ETWS / CMAS is not broadcast in the cell included in the NPN 30 or the SNPN 40, or when the cell included in the NPN 30 or the SNPN 40 is unavailable, the residence control unit 230 can camp in the PLMN cell C10.

[0064] The case where the emergency information is not broadcast can include, for example: the case where the emergency information is not included in the SIB, and the case where the SIB cannot be received. In addition, the case where the cell included in the NPN 30 or the SNPN 40 is unavailable can include, for example: the case where the UE 200 cannot access the cell due to the propagation state of the radio signal, etc., and the case where the cell does not operate due to a failure.

[0065] In addition, the residence control unit 230 may perform residence according to the residence cell information received by the wireless reception unit 220. Specifically, the residence control unit 230 can determine the cell for performing residence in order to receive the emergency information based on ETWS / CMAS according to the received residence cell information, and perform residence in the determined cell.

[0066] The emergency information processing unit 240 performs processing related to emergency information. Specifically, the emergency information processing unit 240 processes the emergency information based on ETWS / CMAS.

[0067] ETWS may include emergency information such as earthquake bulletins provided by municipalities, governments, etc. The emergency information based on ETWS can be broadcast based on the Cell Broadcast Service (CBS).

[0068] In ETWS, it can be separately broadcast as two types of signals: the Primary Notification that is broadcast at the fastest achievable speed, and the Secondary Notification that broadcasts supplementary information (magnitude, epicenter, etc.). CMAS can also broadcast the same emergency information as ETWS, but also includes other emergency situations other than earthquakes and tsunamis (e.g., presidential alerts, threat alerts (tornado / hurricane), child abduction alerts, etc.).

[0069] ETWS / CMAS is included in the Public Warning System (PWS) and can also be referred to as PWS.

[0070] The emergency action execution unit 250 performs emergency actions according to the received emergency information. Specifically, the emergency action execution unit 250 can display the content of the emergency information on the screen or output an alarm sound.

[0071] (3) Operation of the wireless communication system

[0072] Next, the operation of the wireless communication system 10 will be described. Specifically, the residence operation of the UE 200 (SNPN access mode UE) in the state set to the access mode for the SNPN 40 will be described.

[0073] (3.1) General operation

[0074] First, the overall general operation of the wireless communication system 10 including the residence operation of the UE 200 will be described. Figure 3 A general communication timing related to the reception of the emergency information based on ETWS / CMAS is shown.

[0075] As shown Figure 3 in the figure, the network broadcasts the resident cell information (S10) to the UE 200 via at least any one of the PLMN cell C10, the NPN cell C20, or the SNPN cell C30. As described above, the network may include the PLMN 20, the NPN 30, or the SNPN 40.

[0076] Specifically, the network can broadcast the SIB containing the resident cell information via the cell. As described above, the resident cell information indicates the cell where the UE 200 should camp.

[0077] The UE 200 determines the cell to camp on according to the received resident cell information, so as to receive the emergency information of the ETWS / CMAS based on the cell where it camps (S20).

[0078] In addition, when the cell where the UE 200 should camp is uniquely determined in advance as any one of the action examples described later, etc., the processes of S10 and S20 can be omitted.

[0079] The UE 200 starts to operate in the SNPN access mode in order to access the SNPN 40 (S30). Specifically, the UE 200 performs wireless communication via a suitable cell in the NPN cell. This suitable cell may also be referred to as a suitable SNPN cell. Here, the UE 200 can perform wireless communication in the SNPN 40 via the SNPN cell C30.

[0080] In addition, as described above, the SNPN access mode UE can be interpreted as a UE that operates in the SNPN access mode, and does not necessarily have to be in a connected state (RRC connected) with the SNPN in the RRC. It can be in an idle state (RRC idle) or an inactive state (RRC inactive).

[0081] In addition, the use of the UE 200 is not particularly limited, but the UE 200 can be conceived for use in mission-critical areas such as robots, assembly machines, and IoT (Internet of Things) devices in factories.

[0082] Next, the UE 200 enters a state where it cannot detect a suitable SNPN cell (S40). The state where the detection of a suitable SNPN cell (SNPN cell C30) cannot be performed may include: a state where the quality of the radio signal between the UE 200 and the gNB100C does not meet the conditions for residence or connection, or a state where a suitable SNPN cell is not formed due to a failure of the gNB 100C, etc.

[0083] In this case, the UE 200 performs residence in the cell indicated by the resident cell information (S50). For example, the UE200 can perform residence in the NPN cell C20 included in the NPN 30 or the PLMN cell C10 included in the PLMN 20 according to the resident cell information.

[0084] The UE 200 receives an SIB containing ETWS / CMAS-based emergency information in the cell indicated by the resident cell information (S60). There is no particular limitation on the SIB used for broadcasting ETWS / CMAS-based emergency information. For example, like the existing CMAS, SIB1 and SIB12 can be used.

[0085] The UE 200 performs an emergency action (S70) according to the content of the received ETWS / CMAS-based emergency information. Specifically, the UE 200 displays the content of the received emergency information on the screen or outputs an alarm sound.

[0086] In addition, when the above state of S40 does not occur and the UE 200 can perform residence in a suitable SNPN cell, the resident cell can be unchanged, and the UE can receive ETWS / CMAS-based emergency information via the suitable SNPN cell (when the emergency information is broadcast in the suitable SNPN cell). When the emergency information is not broadcast in the suitable SNPN cell, as described below, the resident cell can be changed to another cell (NPN cell C20 or PLMN cell C10).

[0087] (3.2) UE Action Flow

[0088] Next, the residence action flow of the UE 200 (SNPN access mode UE) will be described.

[0089] (3.2.1) Action Example 1

[0090] Figure 4 Shows the residence action flow of the UE 200 (Action Example 1). As Figure 4As shown, the UE 200 determines whether emergency information based on ETWS / CMAS is broadcast in the SNPN cell (S110).

[0091] When emergency information based on ETWS / CMAS is broadcasted in the SNPN cell, UE 200 determines whether there is a suitable SNPN cell (S120). Whether there is a suitable SNPN cell can be determined based on whether the radio quality that allows camping in the cell can be ensured (the same applies below).

[0092] In the case that there is no suitable SNPN cell, UE 200 searches for a non-suitable SNPN cell (S130) and determines whether there is a non-suitable SNPN cell (S140). A non-suitable SNPN cell (non-suitable cell) can be interpreted as a cell that is not a suitable SNPN cell. As described above, a non-suitable cell is interpreted as a cell that is included in an NPN (including SNPN) and is not a suitable cell (suitable cell), but in a non-suitable cell, UE 200 can also reside and obtain restricted services. A non-suitable SNPN cell can also be interpreted as a type of acceptable cell (acceptable cell).

[0093] In the case that a non-suitable SNPN cell exists, the UE 200 performs camping in the non-suitable SNPN cell (S150).

[0094] In addition, in the case that a suitable SNPN cell exists, the UE 200 performs camping in the suitable SNPN cell (S160). A suitable SNPN cell may be interpreted as a SNPN cell that satisfies a predetermined condition for the UE 200 to access.

[0095] The UE 200 obtains the emergency information based on ETWS / CMAS via the camped cell (S170). Specifically, the UE 200 obtains the emergency information included in the SIB.

[0096] The UE 200 performs an emergency action based on the acquired emergency information (S180). Specifically, the UE 200 displays the contents of the emergency information on a screen or outputs an alarm sound.

[0097] In addition, the operations of the UE 200 involved in this operation example can be described as follows.

[0098] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to a non-suitable SNPN cell as an acceptable cell to obtain limited service (receive ETWS and CMAS notifications).

[0099] (3.2.2) Operation Example 2

[0100] Figure 5 The camping operation process of the UE 200 (Operation Example 2) is shown. Hereinafter, the description of the same parts as in Operation Example 1 will be appropriately omitted.

[0101] As Figure 5 shown, the UE 200 determines whether the ETWS / CMAS-based emergency information is broadcast in the SNPN cell (S210).

[0102] When the ETWS / CMAS-based emergency information is broadcast in the SNPN cell, the UE 200 determines whether it can use the SNPN cell in which the ETWS / CMAS-based emergency information is broadcast (S220). Specifically, the UE 200 determines whether the SNPN cell is operating and whether it can camp.

[0103] In the case where the SNPN cell is not available or the ETWS / CMAS-based emergency information is not broadcast in the SNPN cell, the UE 200 searches for a non-SNPN cell (S230) and determines whether there is a non-SNPN cell (S240). The non-SNPN cell can be interpreted as a cell other than the SNPN cell. Specifically, it can be interpreted as an NPN cell (NPN cell C20) or a PLMN cell (PLMN cell C10).

[0104] In the presence of a non-SNPN cell, the UE 200 camps in the non-SNPN cell (S250). The processing of S260 and S270 is the same as that of S170 and S180 involved in Action Example 1.

[0105] In addition, the actions of the UE 200 involved in this action example can be described as follows.

[0106] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to a non-SNPN cell as an acceptable cell to obtain limited service (receive ETWS and CMAS notifications)."

[0107] (3.2.3) Action Example 3

[0108] Figure 6 Shows the camping action process of the UE 200 (Action Example 3). This action example constitutes an action obtained by combining Action Example 1 and Action Example 2. Specifically, the priority order of the cells for camping to receive emergency information based on ETWS / CMAS is specified.

[0109] As Figure 6 shown, the UE 200 determines whether there is a suitable SNPN cell (S310).

[0110] In the absence of a suitable SNPN cell, the UE 200 determines whether there is a non-suitable SNPN cell (S320). Additionally, as shown in Action Example 1, the UE 200 can search for the presence or absence of a non-suitable SNPN cell.

[0111] In the presence of a suitable SNPN cell, the UE 200 camps in the suitable SNPN cell (S330).

[0112] In the case that there are no suitable SNPN cells and non-suitable SNPN cells, the UE 200 performs camping in the non-SNPN cell (S340).

[0113] When there is a non-suitable SNPN cell instead of the suitable SNPN cell, UE 200 camps on the non-suitable SNPN cell (S350). The processes of S360 and S370 are the same as the processes of S170 and S180 in the first operation example.

[0114] Furthermore, the operation of UE 200 according to this operation example can be described as follows.

[0115] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to an "acceptable cell" to obtain limited service (receive ETWS and CMAS notifications) with the following rule (For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to an "acceptable cell" to obtain limited service (receive ETWS and CMAS notifications) with the following rule):

[0116] -if a non-suitable SNPN cell is available

[0117] -receive ETWS or CMAS notification on SNPN cell (acceptable SNPN cell)

[0118] -else(ienon-SNPN cell is available) (otherwise (for example, non-SNPN cell is available))

[0119] - receive ETWS or CMAS notification on non - SNPN cell (i.e., PLMN cell or NPN cell)"(In a non - SNPN cell, receive ETWS or CMAS notification (e.g., PLMN cell or NPN cell))

[0120] (3.2.4) Action Example 4

[0121] Figure 7 Show the residence action process of UE 200 (Action Example 4). In this action example, the priority order of the cells for camping to receive ETWS / CMAS - based emergency information is also specified.

[0122] As Figure 7 shown, UE 200 determines whether there is a suitable SNPN cell (S410).

[0123] If there is a suitable SNPN cell, UE 200 determines whether there is a non - SNPN cell (S420).

[0124] If there is a non - SNPN cell, UE 200 camps in the non - SNPN cell (S430).

[0125] If there is a suitable SNPN cell, UE 200 camps in the suitable SNPN cell (S440). The processing of S450 and S460 is the same as the processing of S170 and S180 involved in Action Example 1.

[0126] In addition, the actions of UE 200 involved in this action example can be described as follows.

[0127] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) with the following rule (For a UE operating in SNPN access mode, if there is no suitable SNPN cell available, the UE shall camp to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) according to the following rule):

[0128] - if a non-NPN cell is available (if a non-NPN cell is available)

[0129] - receive ETWS or CMAS notification on non-NPN cell "(receive ETWS or CMAS notification on non-NPN cell)"

[0130] (3.2.5) Action Example 5

[0131] Figure 8 Shows the resident action process of UE 200 (Action Example 5). In this action example, the priority order of the cells for resident to receive ETWS / CMAS-based emergency information is also specified.

[0132] As Figure 8 shown, UE 200 determines whether there is a suitable SNPN cell (S510).

[0133] In the case where there is no suitable SNPN cell, UE 200 determines whether there is an NPN cell (S520).

[0134] In the case where there is a suitable SNPN cell, UE 200 performs resident in the suitable SNPN cell (S530).

[0135] In the case where there is no NPN cell, UE 200 performs resident in the non-NPN cell (S540). Here, the non-NPN cell can represent a public cell (specifically, PLMN cell C10).

[0136] In the case where there is an NPN cell, UE 200 performs resident in the NPN cell (S550). The processing of S560 and S570 is the same as the processing of S170 and S180 involved in Action Example 1.

[0137] In addition, regarding the action of UE 200 involved in this action example, it can be expressed as follows.

[0138] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) with the following rule (For UE actions in SNPN access mode, if no suitable SNPN cell is available, then UE camps to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) according to the following rules):

[0139] - if a NPN cell is available (If a NPN cell is available)

[0140] - receive ETWS or CMAS notification on NPN cell (Receive ETWS or CMAS notification on the NPN cell)

[0141] - else (i.e. non-NPN cell is available) (Otherwise (for example, a non-NPN cell is available))

[0142] - receive ETWS or CMAS notification on non-NPN cell" (Receive ETWS or CMAS notification on the non-NPN cell)

[0143] In addition, in this action example, in S520, UE 200 can determine whether there is a non-NPN cell. In this case, UE 200 can camp in the non-NPN cell if there is a non-NPN cell, and camp in the NPN cell if there is no non-NPN cell.

[0144] In addition, in this case, the actions of UE 200 can be described as follows.

[0145] "For UE operating in SNPN Access Mode, if no suitable SNPN cell is available, UE shall camp to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) with the following rule (For UE operating in SNPN access mode, if there is no suitable SNPN cell available, then UE shall camp to an “acceptable cell” to obtain limited service (receive ETWS and CMAS notifications) according to the following rules):

[0146] - if a non-NPN cell is available (If a non-NPN cell is available)

[0147] - receive ETWS or CMAS notification on non-NPN cell (Receive ETWS or CMAS notification on non-NPN cell)

[0148] - else (i.e., NPN cell is available) (Otherwise (e.g., an NPN cell is available))

[0149] - receive ETWS or CMAS notification on NPN cell" (Receive ETWS or CMAS notification on NPN cell)

[0150] (4) Function · Effect

[0151] According to the above-described embodiments, the following functions and effects can be obtained. Specifically, the UE 200 can perform camping in a non-suitable cell that is included in the NPN and satisfies the conditions but is not a suitable cell in a state where the access mode is set to face the NPN 30 or the SNPN 40 (i.e., SNPN access mode UE). In addition, the UE 200 can receive emergency information based on ETWS / CMAS via this non-suitable cell.

[0152] In addition, the UE 200 can perform camping in the PLMN cell C10 included in the PLMN 20 in the state of SNPN access mode UE.

[0153] Therefore, even when the UE 200 is used in mission-critical areas such as robots in factories, assembly machinery, and IoT (Internet of Things) devices, the UE 200 operating as an SNPN access mode UE can obtain emergency information based on ETWS / CMAS more reliably.

[0154] As a result, it is possible to achieve an automatic emergency stop of the system based on this emergency information, and the losses caused by emergency situations such as earthquakes and tsunamis can be minimized.

[0155] In the present embodiment, when the emergency information based on ETWS / CMAS is not broadcast in the cells included in the NPN 30 and / or SNPN 40, or when the cells (NPN cell C20, SNPN cell C30) included in the NPN 30 and / or SNPN 40 are unavailable, the UE 200 can camp on the PLMN cell C10. Therefore, the UE 200 can obtain the emergency information based on ETWS / CMAS more reliably.

[0156] In the present embodiment, the UE 200 can receive the camping cell information indicating the cell on which the UE 200 should camp and perform camping according to the received camping cell information. Therefore, it is possible to control a suitable camping cell from various cells under the guidance of the network.

[0157] (5) Other embodiments

[0158] The embodiments have been described above, but are not limited to the descriptions of the embodiments, and various modifications and improvements can be made, which are obvious to those skilled in the art.

[0159] For example, in the above embodiment, the terms of SNPN cells (suitable SNPN cells, non-suitable SNPN cells), non-SNPN cells (NPN cells or PLMN cells), and NPN cells are used to describe the camping operation of the UE 200, but the names of these cells can be appropriately replaced within the scope of the content described in the above embodiment. For example, the SNPN cells can be interpreted to include both suitable SNPN cells and non-suitable SNPN cells, or the non-SNPN cells can be interpreted to include both NPN cells and PLMN cells.

[0160] In the above-described embodiments, ETWS / CMAS is taken as an example for explanation, but other systems that broadcast the same kind of emergency information (for example, Korean Public Alert System (KPAS), EU-ALERT, WEA (Wireless Emergency Alerts)) can also be targeted.

[0161] In the block diagrams used in the description of the above embodiments ( Figure 2 ) show blocks in terms of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a single device physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly (for example, using wired, wireless, etc.) connected and these multiple devices can be used for implementation. The functional block can also be implemented by combining software with the above single device or the above multiple devices.

[0162] Functionally, it has judgment, decision-making, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notification, communication, forwarding, configuration, reconfiguration, allocation (allocating, mapping), assignment, etc., but is not limited to these. For example, a functional block (structural part) that makes transmission function is called a transmitting unit or a transmitter. In short, as described above, there is no particular limitation on the implementation method.

[0163] In addition, the above UE 200 can also function as a computer that processes the wireless communication method of the present disclosure. Figure 9 is a diagram showing an example of the hardware structure of the UE 200. As Figure 9 shown, the UE 200 can also be configured to include a computer device such as a processor 1001, a memory 1002 (memory), a storage 1003 (storage), a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0164] In addition, in the following description, the term "apparatus" may be replaced with "circuit", "device", "unit", etc. The hardware structure of the apparatus may be configured to include one or more of the illustrated apparatuses, or may be configured not to include some of the apparatuses.

[0165] Each functional block of the UE 200 (refer to Figure 2 ) can be implemented by any hardware element of the computer apparatus or a combination of the hardware elements.

[0166] In addition, each function in the UE 200 is implemented by the following method: a predetermined software (program) is read into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs operations and controls at least one of the communication of the communication apparatus 1004 or the reading and writing of data in the memory 1002 and the storage 1003.

[0167] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, etc.

[0168] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication apparatus 1004 into the memory 1002, and performs various processes based on this. As the program, a program that causes the computer to execute at least a part of the operations described in the above embodiments is used. In addition, regarding the above various processes, the above various processes may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially. The processor 1001 may also be installed by one or more chips. In addition, the program may be sent from a network via a telecommunication line.

[0169] The memory 1002 is a computer-readable recording medium, and may be constituted by at least one of, for example, a read only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store a program (program code), a software module, etc. that can execute the method according to an embodiment of the present disclosure.

[0170] The memory 1003 is a computer-readable recording medium, which can be constituted by at least one of optical discs such as Compact Disc ROM (CD-ROM), hard disk drives, floppy disks, magneto-optical discs (e.g., compact discs, digital versatile discs, Blu-ray (registered trademark) discs, smart cards, flash memories (e.g., cards, sticks, key drives (Key drive)), Floppy (registered trademark) disks, magnetic strips, etc. The memory 1003 can also be referred to as an auxiliary storage device. The above storage medium can be, for example, other appropriate media such as a database or a server including at least one of the memory 1002 and the memory 1003.

[0171] The communication device 1004 is hardware (a transceiver device) for communicating between computers via at least one of a wired network and a wireless network. For example, it can also be referred to as a network device, a network controller, a network card, a communication module, etc.

[0172] The communication device 1004, for example, in order to implement at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD), can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc.

[0173] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Additionally, the input device 1005 and the output device 1006 can also be integrally formed (e.g., a touch panel).

[0174] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 can be constituted by a single bus or can be constituted by different buses for each device.

[0175] In addition, the device may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc., and part or all of the functional blocks may also be implemented by this hardware. For example, the processor 1001 may also be installed using at least one of these hardware components.

[0176] In addition, the notification of information is not limited to the forms / embodiments described in this disclosure, and other methods may also be used. For example, the notification of information may be implemented by physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI)), high layer signaling (e.g., RRC signaling, medium access control (MAC) signaling, broadcast information (master information block (MIB), system information block (SIB))), other signals, or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message. For example, it may also be an RRC connection setup message, an RRC connection reconfiguration message, etc.

[0177] Each form / embodiment described in the present disclosure can also be applied to at least one of Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, the 4th generation mobile communication system (4G), the 5th generation mobile communication system (5G), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA 2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), systems using other appropriate systems, and next-generation systems extended therefrom. In addition, multiple systems (for example, a combination of at least one of LTE and LTE-A and 5G, etc.) can be combined and applied.

[0178] For the processing procedures, timings, flows, etc. of each form / embodiment described in the present disclosure, the order can be changed without contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using the illustrated order, but are not limited to the specific order presented.

[0179] In the present disclosure, specific actions performed by the base station may be performed by its upper node under certain circumstances. In a network composed of one or more network nodes having a base station, it is obvious that various actions performed for communicating with a terminal can be performed by at least one of the base station and other network nodes other than the base station (for example, MME or S-GW, etc. are considered, but are not limited to these). In the above, the case where there is one other network node other than the base station is illustrated, but the other network nodes may also be a combination of multiple other network nodes (for example, MME and S-GW).

[0180] Information, signals (information), etc. can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It can also be input or output via multiple network nodes.

[0181] The input or output information, etc. can be stored in a specific location (e.g., memory), or can be managed using a management table. The input or output information, etc. can be rewritten, updated, or appended. The output information, etc. can also be deleted. The input information, etc. can also be sent to other devices.

[0182] The determination can be made by a value represented by 1 bit (0 or 1), can also be made by a Boolean value (true or false), and can also be made by a numerical comparison (e.g., comparison with a predetermined value).

[0183] Each form / embodiment described in this disclosure can be used alone, can be used in combination, or can be switched according to the execution. In addition, the notification of the predetermined information is not limited to being explicit (e.g., notification of "is X"), and can also be implicit (e.g., not notifying the predetermined information).

[0184] For software, whether it is called software, firmware, middleware, microcode, hardware description language, or by other names, it should be broadly interpreted as referring to commands, command sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc.

[0185] In addition, software, commands, information, etc. can be transmitted and received via a transmission medium. For example, when using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared, microwave, etc.) to send software from a web page, server, or other remote source, at least one of these wired technologies and wireless technologies is included in the definition of the transmission medium.

[0186] The information, signals, etc. described in this disclosure can also be represented using any one of various different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be involved in the above description as a whole can be represented by voltage, current, electromagnetic wave, magnetic field or magnetic particles, light field or photons, or any combination of these.

[0187] In addition, the terms described in this disclosure and the terms required to understand this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may also be a signal (signaling). In addition, a signal may also be a message. Further, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0188] The terms such as "system" and "network" used in this disclosure may be used interchangeably.

[0189] In addition, the information, parameters, etc. described in this disclosure may be represented by absolute values, may be represented by relative values with respect to a predetermined value, or may be represented by other corresponding information. For example, radio resources may also be indicated by an index.

[0190] The names used for the above parameters are non-restrictive in any aspect. Furthermore, mathematical expressions using these parameters are sometimes different from the content explicitly shown in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by appropriate names, and thus the various names assigned to these various channels and information elements are non-restrictive in any aspect.

[0191] In this disclosure, the terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. Sometimes, a base station is also referred to as a macro cell, a small cell, a femto cell, a pico cell, etc.

[0192] A base station can accommodate one or more (e.g., 3) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0193] The terms such as "cell" or "sector" refer to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within the coverage range.

[0194] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0195] For a mobile station, those skilled in the art sometimes also refer to it using the following terms: subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terms.

[0196] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. Additionally, at least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). Further, at least one of the base station and the mobile station also includes a device that does not necessarily move during a communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0197] Furthermore, the base station in the present disclosure may also be replaced with a mobile station (user terminal, the same hereinafter). For example, regarding a structure in which the communication between the base station and the mobile station is replaced with the communication between multiple mobile stations (e.g., it may also be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), various forms / embodiments of the present disclosure can also be applied. In this case, it may also be configured such that the mobile station has the functions of the base station. Additionally, terms such as "uplink" and "downlink" may also be replaced with terms corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced with a side channel.

[0198] Similarly, the mobile station in the present disclosure may be replaced with the base station. In this case, it may be configured such that the base station has the functions of the mobile station.

[0199] A radio frame may be composed of one or more frames in the time domain. In the time domain, each of the one or more frames may also be referred to as a subframe.

[0200] A subframe can also be composed of one or more time slots in the time domain. The subframe can be a fixed time length (e.g., 1 ms) independent of the numerology.

[0201] The numerology can also be communication parameters applied to at least one of transmission and reception of a certain signal or channel. The numerology can represent, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, specific windowing processing performed by the transceiver in the time domain, etc.

[0202] A time slot can be composed of one or more symbols (such as orthogonal frequency division multiplexing (OFDM) symbols, single carrier frequency division multiple access (SC-FDMA) symbols, etc.) in the time domain. The time slot can be a time unit based on the numerology.

[0203] A time slot can also contain multiple mini-slots. Each mini-slot can be composed of one or more symbols in the time domain. Additionally, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a time slot. The PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot can also be referred to as PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (or PUSCH) mapping type B.

[0204] A radio frame, a subframe, a time slot, a mini-slot, and a symbol all represent time units when transmitting a signal. A radio frame, a subframe, a time slot, a mini-slot, and a symbol can also use their respective other names.

[0205] For example, 1 subframe can also be referred to as a transmission time interval (TTI), multiple consecutive subframes can also be referred to as a TTI, 1 time slot or 1 mini-slot can also be referred to as a TTI. That is, at least one of the subframe and the TTI can be the subframe (1 ms) in the existing LTE, can also be a period shorter than 1 ms (e.g., 1 - 13 symbols), and can also be a period longer than 1 ms. In addition, the unit representing the TTI can also not be a subframe, but be referred to as a time slot, a mini-slot, etc.

[0206] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate radio resources (such as the bandwidth and transmission power that can be used in each user terminal) to each user terminal in units of TTI. In addition, the definition of the TTI is not limited to this.

[0207] The TTI can be a transmission time unit such as a data packet (transport block), code block, or codeword after channel coding, or a processing unit for scheduling, link adaptation, etc. In addition, when a TTI is given, the actual time interval (e.g., the number of symbols) to which the transport block, code block, codeword, etc. are mapped can also be shorter than the TTI.

[0208] In addition, when 1 time slot or 1 mini time slot is called a TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also constitute the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) that constitute the minimum time unit for this scheduling can also be controlled.

[0209] A TTI with a time length of 1 ms can be called a normal TTI (TTI in LTE Rel.8 - 12), a usual TTI, a long TTI, a normal subframe, a usual subframe, a long subframe, a time slot, etc. A TTI shorter than the usual TTI can be called a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini time slot, a sub - time slot, a time slot, etc.

[0210] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can be replaced with a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be replaced with a TTI having a TTI length less than that of the long TTI and a TTI length of 1 ms or more.

[0211] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain. In the frequency domain, it can also include one or more consecutive subcarriers. The number of subcarriers included in the RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers included in the RB can be determined based on the parameter set.

[0212] In addition, the time domain of the RB can include one or more symbols, and can also be the length of 1 time slot, 1 mini time slot, 1 subframe, or 1 TTI. 1 TTI, 1 subframe, etc. can also be composed of one or more resource blocks respectively.

[0213] In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0214] In addition, a resource block may also be composed of one or more resource elements (REs). For example, 1 RE may also be a wireless resource region of 1 sub-carrier and 1 symbol.

[0215] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) in a certain carrier may also represent a subset of consecutive common resource blocks (common RBs) used for a certain parameter set. Here, the common RBs may also be determined by the indices of the RBs based on the common reference point of the carrier. A PRB may also be defined by a certain BWP and numbered within that BWP.

[0216] The BWP may also include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). For a UE, one or more BWPs may also be set within 1 carrier.

[0217] At least one of the set BWPs may also be active, and the UE may not assume to transmit and receive predetermined signals / channels outside the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced with "BWP".

[0218] The structures of the above-mentioned radio frames, sub-frames, time slots, mini time slots, symbols, etc. are only examples. For example, the number of sub-frames included in a radio frame, the number of time slots in each sub-frame or radio frame, the number of mini time slots included in a time slot, the number of symbols and RBs included in a time slot or mini time slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be variously changed.

[0219] Terms such as "connected" and "coupled" and all variations of these terms are intended to represent all direct or indirect connections or couplings between two or more elements, which may include cases where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be a physical coupling or connection, a logical coupling or connection, or a combination of these. For example, "Access" can be used to replace "connected". In the case of use in the present disclosure, for two elements, it can be considered that they are "connected" or "coupled" to each other by using at least one of one or more wires, cables, and printed electrical connections, and by using electromagnetic energy such as electromagnetic energy having wavelengths in the wireless frequency domain, microwave region, and optical (including both visible and invisible) regions as some non-limiting and non-inclusive examples.

[0220] The reference signal can be abbreviated as Reference Signal (RS), or can be called Pilot according to the applied standard.

[0221] The description "in accordance with" used in the present disclosure does not mean "only in accordance with" unless otherwise clearly stated. In other words, the meaning of the description "in accordance with" is both "only in accordance with" and "at least in accordance with".

[0222] The "unit" in the structure of each of the above devices can also be replaced with "section", "circuit", "equipment", etc.

[0223] Any reference to elements using terms such as "first", "second", etc. used in the present disclosure does not entirely limit the quantity and order of these elements. These terms are used in the present disclosure as a simple method for distinguishing between two or more elements. Therefore, the reference to the first and second elements does not mean that only two elements can be adopted here or that the first element must precede the second element in any form.

[0224] When terms such as "include", "including" and their variations are used in the present disclosure, these terms mean inclusive in the same way as the term "comprising". And, the term "or" used in the present disclosure does not mean exclusive or.

[0225] In the present disclosure, for example, when articles are added through translation such as a, an, and the in English, the present disclosure also includes cases where the nouns following these articles are in the plural form.

[0226] The terms "determining" and "deciding" used in this disclosure sometimes also cover various actions. For example, "determining" and "deciding" may include cases where matters that have been judged, calculated, computed, processed, derived, investigated, looked up / search / inquired (e.g., search in a table, database, or other data structure), or ascertained are regarded as having been "determined" or "decided". In addition, "determining" and "deciding" may include cases where matters that have been received (e.g., receiving information), transmitted (e.g., transmitting information), input, output, or accessed (e.g., accessing data in memory) are regarded as matters of "determining" or "deciding". Further, "determining" and "deciding" may include cases where matters that have been resolved, selected, chosen, established, compared, etc. are regarded as matters of "determining" or "deciding". That is, "determining" and "deciding" may cover matters where any action has been "determined" or "decided". Additionally, "determining (deciding)" may be replaced by "assuming", "expecting", or "considering".

[0227] In this disclosure, the term "A and B are different" may also mean "A and B are different from each other". Additionally, this term may also mean "A and B are each different from C". Terms such as "separated" and "combined" may be interpreted in the same way as "different".

[0228] As described above, this disclosure has been explained in detail. However, for those skilled in the art, it should be clear that this disclosure is not limited to the embodiments described in this disclosure. This disclosure can be implemented in the form of modifications and changes without departing from the gist and scope of this disclosure determined by the claims. Therefore, the purpose of the description of this disclosure is for illustrative purposes and has no restrictive meaning for this disclosure.

[0229] Reference numeral description:

[0230] 10 Wireless communication system

[0231] 20 PLMN

[0232] 30 NPN

[0233] 40 SNPN

[0234] 100A, 100B, 100C gNB

[0235] 200 UE

[0236] 210 Wireless Transmission Unit

[0237] 220 Wireless Reception Unit

[0238] 230 Dwell Control Unit

[0239] 240 Emergency Information Processing Unit

[0240] 250 Emergency Action Execution Unit

[0241] C10 PLMN Cell

[0242] C20 NPN Cell

[0243] C30 SNPN Cell

[0244] 1001 Processor

[0245] 1002 Memory

[0246] 1003 Storage

[0247] 1004 Communication Device

[0248] 1005 Input Device

[0249] 1006 Output Device

[0250] 1007 Bus

Claims

1. A terminal, wherein, The terminal has: a control unit that, in a state where the access mode is set to an access mode for a non-public mobile communication network different from a public mobile communication network, performs a residence in a non-suitable cell that is included in the non-public mobile communication network and satisfies a condition although it is not a suitable cell; and a receiving unit that receives emergency information via the non-suitable cell, wherein the non-public mobile communication network is an independent non-public mobile communication network, i.e., an SNPN, and the control unit accesses the non-suitable cell and performs a residence in a state where the access mode is set to the access mode for the SNPN.

2. A terminal, wherein, The terminal has: a control unit that, in a state where the access mode is set to an access mode for a non-public mobile communication network different from a public mobile communication network, performs a residence in a public cell that is included in the public mobile communication network; and a receiving unit that receives emergency information via the public cell, wherein the non-public mobile communication network is an independent non-public mobile communication network, i.e., an SNPN, and the control unit resides in the public cell when the emergency information is not broadcast in a cell included in the independent non-public mobile communication network or when a cell included in the independent non-public mobile communication network is unavailable.

3. The terminal according to claim 1 or 2, wherein the receiving unit receives residence cell information indicating a cell in which the terminal should reside, and the control unit performs the residence according to the received residence cell information.

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