Terminal, network node, and communication method

Abstract

A terminal has a control section that confirms that the terminal has a terminal capability capable of simultaneously camping on a first communication system and a second communication system; a transmission section that, while in a coverage area of the first communication system, transmits a first message requesting registration to a first network node in the first communication system, the first message including information about the terminal capability capable of simultaneously camping on the first communication system and the second communication system, and, after moving to the second communication system, transmits a second message requesting registration to a second network node in the second communication system, the second message including information about the terminal capability capable of simultaneously camping on the first communication system and the second communication system; and a reception section that simultaneously camps on the first communication system and the second communication system.

Description

Technical Field

[0001] This invention relates to terminals, network nodes, and communication methods in communication systems. Background Technology

[0002] Within the 3GPP (3rd Generation Partnership Project), research was conducted on a wireless communication method known as 5G or NR (New Radio) to further increase system capacity, accelerate data transmission speeds, and reduce latency in the radio space. In 5G, various wireless technologies were researched to meet the requirements of achieving throughput of over 10Gbps and achieving latency of less than 1ms in the radio space.

[0003] In NR, network architectures including 5GC (5G Core Network), corresponding to the core network EPC (Evolved Packet Core) in the LTE (Long Term Evolution) network architecture, and NG-RAN (Next Generation-Radio Access Network), corresponding to the RAN (Radio Access Network) E-UTRAN (Evolved Universal Terrestrial Radio Access Network) in the LTE network architecture, are studied (e.g., Non-Patent Literature 1). Here, the system including EPC can be referred to as EPS (Evolved Packet System), and the system including 5GC can be referred to as 5GS (5G System).

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 23.501 V18.4.0 (2023-12)

[0007] Non-patent document 2: 3GPP TS 23.502 V18.4.0 (2023-12)

[0008] Non-patent document 3: 3GPP TS 29.503 V18.4.0 (2023-12)

[0009] Non-patent document 4: 3GPP TS 38.413 V18.0.0 (2023-12)

[0010] Non-patent document 5: 3GPP TS 24.501 V18.5.0 (2023-12) Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] In 5GS, when only EPS supports voice call services, it is possible to fall back from 5GS to EPS (EPS FB (Fallback)). On the other hand, it is also conceivable that the terminal can be in standby mode while making voice calls in both systems simultaneously.

[0013] However, in EPS FB, due to the use of special network nodes called composite nodes, it is sometimes unsuitable for transitions to next-generation systems, etc.

[0014] The present invention was made in view of the above-mentioned problems, and its purpose is to enable a terminal to be on standby in two systems simultaneously without the use of special network nodes in a wireless communication system.

[0015] According to the disclosed technology, a terminal is provided, comprising: a control unit that confirms that the terminal has the terminal capability to simultaneously standby in a first communication system and a second communication system; a transmission unit that, when within the coverage area of ​​the first communication system, sends a first registration request message to a first network node in the first communication system, the first message containing information related to the terminal capability to simultaneously standby in the first communication system and the second communication system, and after moving to the second communication system, sends a second registration request message to a second network node in the second communication system, the second message containing information related to the terminal capability to simultaneously standby in the first communication system and the second communication system; and a receiving unit that simultaneously standsby in the first communication system and the second communication system.

[0016] Invention Effects

[0017] According to the disclosed technology, in a wireless communication system, a terminal can be on standby in two systems simultaneously without the need for a special network node. Attached Figure Description

[0018] Figure 1 This is a diagram used to illustrate an example of a communication system.

[0019] Figure 2 This is a diagram used to illustrate an example of a communication system in a roaming environment.

[0020] Figure 3 This is a diagram illustrating an example of a first timing diagram in an embodiment of the present invention.

[0021] Figure 4 This is a diagram illustrating an example of the second timing diagram in an embodiment of the present invention.

[0022] Figure 5 This is a diagram illustrating an example of the third timing diagram in an embodiment of the present invention.

[0023] Figure 6 This is a diagram illustrating an example of the fourth timing diagram in an embodiment of the present invention.

[0024] Figure 7 This is a diagram illustrating an example of the fifth timing diagram in an embodiment of the present invention.

[0025] Figure 8 This is a diagram illustrating an example of the functional structure of a base station 10 and a network node 30 in an embodiment of the present invention.

[0026] Figure 9 This is a diagram illustrating an example of the functional structure of terminal 20 in an embodiment of the present invention.

[0027] Figure 10 This is a diagram illustrating an example of the hardware structure of the base station 10, terminal 20, and network node 30 in an embodiment of the present invention.

[0028] Figure 11 This is a diagram illustrating an example of the structure of a vehicle 2001 according to an embodiment of the present invention. Detailed Implementation

[0029] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, the embodiments described below are merely examples, and the application of the present invention is not limited to the embodiments described below.

[0030] In the operation of the wireless communication system according to embodiments of the present invention, existing technologies are appropriately used. These existing technologies include, for example, existing LTE, but are not limited to, existing LTE. Furthermore, unless otherwise stated, the term "LTE" as used herein has a broad meaning that includes LTE-Advanced and subsequent modes (e.g., NR) or wireless LAN (Local Area Network).

[0031] Furthermore, in embodiments of the present invention, the "configuration" of wireless parameters, etc., can be a predetermined value that has been pre-configured, or it can be wireless parameters that have been set and notified from network node 30 or terminal 20.

[0032] Figure 1 This is a diagram used to illustrate an example of a communication system. For example... Figure 1 As shown, the communication system consists of a UE (User Equipment) as terminal 20 and multiple network nodes 30. Hereinafter, it is assumed that there is one network node 30 corresponding to each function; however, multiple functions can be implemented by one network node 30, or one function can be implemented by multiple network nodes 30. Furthermore, the term "connection" as used below can refer to either a logical connection or a physical connection.

[0033] The RAN (Radio Access Network) is a network node 30 with radio access capabilities, which may include a base station 10 and connect to the UE, AMF (Access and Mobility Management Function), and UPF (User Plane Function). The AMF is a network node 30 with functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and terminal mobility management. The UPF is a network node 30 with functions related to user plane data processing, such as PDU (Protocol Data Unit) session points interconnected with the DN (Data Network), packet routing and forwarding, and QoS (Quality of Service) processing for the user plane. The UPF and DN constitute a network slice. In the wireless communication network of this embodiment, multiple network slices are constructed.

[0034] The AMF connects with the UE, RAN, SMF (Session Management function), NSSF (Network Slice Selection Function), NEF (Network Exposure Function), NRF (Network Repository Function), UDM (Unified Data Management), ASF (Authentication Server Function), PCF (Policy Control Function), and AF (Application Function). AMF, SMF, NSSF, NEF, NRF, UDM, ASF, PCF, and AF are interconnected network nodes 30 via their respective service-based interfaces Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf.

[0035] The SMF (Service Provider Function) is a network node 30 with functions such as session management, UE IP (Internet Protocol) address allocation and management, DHCP (Dynamic Host Configuration Protocol) functionality, ARP (Address Resolution Protocol) proxy, and roaming capabilities. The NEF (Network Function Provider Function) is a network node 30 with the ability to notify other NFs (Network Functions) and handle events. The NSSF (Network Slice Selection Assistance Information) is a network node 30 with functions such as selecting the network slice to which the UE connects, determining the allowed NSSAI (Network Slice Selection Assistance Information), determining the configured NSSAI, and determining the set of AMFs to which the UE connects. The PCF (Public Network Function Provider Function) is a network node 30 with the function of controlling network policies. The AF (Application Provider Function) is a network node 30 with the function of controlling application servers. The NRF (Network Provider Function) is a network node 30 with the function of discovering NF instances that provide services. The UDM (User Data Repository) is a network node 30 that manages subscriber data and authentication data. The UDM is connected to the UDR (User Data Repository) that maintains this data.

[0036] Figure 2 This is a diagram illustrating an example of a communication system in a roaming environment. For example... Figure 2 As shown, the network consists of a UE (User Equipment) as terminal 20 and multiple network nodes 30. Hereinafter, it is assumed that each function corresponds to one network node 30; however, multiple functions can be implemented by one network node 30, or one function can be implemented by multiple network nodes 30. Furthermore, the term "connection" as used below can refer to either a logical connection or a physical connection.

[0037] The RAN is a network node 30 with wireless access capabilities, connected to the UE, AMF, and UPF. The AMF is a network node 30 with functions such as RAN interface termination, NAS termination, registration management, connection management, reachability management, and mobility management. The UPF is a network node 30 interconnected with the DN, with functions such as external PDU session points, packet routing and forwarding, and user plane QoS processing. The UPF and DN constitute a network slice. In the wireless communication network of this embodiment, multiple network slices are constructed.

[0038] AMF connects to UE, RAN, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF, and SEPP (Security Edge Protection Proxy). AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, and AF are network nodes 30 interconnected via their respective service-based interfaces Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf.

[0039] The SMF (Service Provider Function) is a network node 30 with functions such as session management, UE IP address allocation and management, DHCP, ARP proxy, and roaming. The NEF (Network Provider Function) is a network node 30 with the ability to notify other NFs and handle events. The NSSF (Network Provider Function) is a network node 30 with functions such as selecting the network slice the UE connects to, determining the allowed NSSAI (Network Service Access Point), determining the configured NSSAI, and determining the set of AMFs the UE connects to. The PCF (Network Service Function) is a network node 30 with the function of performing network policy control. The AF (Application Provider Function) is a network node 30 with the function of controlling application servers. The NRF (Network Provider Function) is a network node 30 with the function of discovering NF instances that provide services. The SEPP (Secure Provider Proxy) is a non-transparent proxy used to filter control plane messages between PLMNs (Public Land Mobile Networks). Figure 2 The vSEPP shown is the SEPP in the visited network, and the hSEPP is the SEPP in the home network.

[0040] like Figure 2As shown, the UE is in a roaming environment within the VPLMN (Visited PLMN) connected to the RAN and AMF. The VPLMN and HPLMN (Home PLMN) are connected via vSEPP and hSEPP. For example, the UE can communicate with the HPLMN's UDM via the VPLMN's AMF.

[0041] Furthermore, in 5GS, it is possible to fall back from 5GS to EPS (EPSFB (Fall Back)) when only EPS supports voice call services. In EPS FB, due to the use of SMF+PGW (Packet Data Network Gateway)-C (Control plane), which is called the composite node, and UPF shared by EPS and 5GS, it is sometimes unsuitable for transitions to next-generation systems.

[0042] (Example)

[0043] This describes the process of simultaneously operating in two systems without the need for a special network node terminal in a wireless communication system. In this embodiment, we assume a fallback from 6GS (a 6GS network) as a next-generation system to 5GS (a 5GS network). Here, the 5GS is equipped with base station 10A, AMF30A, SMF30B, and UPF30C, and the 6GS is equipped with 6G base station 10B, 6G AMF30D, 6GS MF30E, and 6G UPF30F. Furthermore, in this embodiment, the following conditions are assumed to be met.

[0044] • During the switch between 5GS and 6GS, data can be discarded or protected at the application layer to prevent data from being discarded.

[0045] • Equipped with a UDM (5G / 6G) UDM30G that is shared in both 5GS and 6GS systems.

[0046] Terminal 20 can transmit simultaneously in either 5GS or 6GS (1Tx) and receive simultaneously in both 5GS and 6GS systems (2Rx).

[0047] Terminal 20 can use a single subscriber information to achieve a dual registration status between 5GS and 6GS.

[0048] The AMF30A and 6GAMF30D can communicate.

[0049] The following describes two embodiments (the first embodiment and the second embodiment) that enable system rollback without the use of special network nodes under the conditions described above.

[0050] (First Embodiment)

[0051] In the first embodiment, the following process is performed.

[0052] Registration is performed on terminal 20 in both 5GS and 6GS environments.

[0053] The UDM30G manages the two registration states in the terminal 20 in association with the Subscription Permanent Identifier (SUPI) in the terminal 20.

[0054] The AMF30A, 6GAMF30D, and UDM30G perform processing related to information indicating that the terminal can be on standby simultaneously in both 5GS and 6GS (capable of being on standby simultaneously in both 5G and 6G).

[0055] If a 5GS voice call occurs while terminal 20 is conducting 6GS communication, AMF 30A executes the call from terminal 20.

[0056] Terminal 20 notifies AMF 30A of information related to its terminal capability to be on standby simultaneously in both 5GS and 6GS.

[0057] The AMF30A forwards the aforementioned terminal capability-related information to the UDM30G.

[0058] The following sequence diagram illustrates the details of the processing. Requests, responses, and notifications sent and received in the process shown below can be referred to as messages (e.g., request messages). Furthermore, details of the registration process and PDU session establishment process in existing specifications related to the messages sent and received in this sequence diagram can be found in Non-Patent Literature 2.

[0059] Figure 3 This is a diagram illustrating an example of a first timing diagram in an embodiment of the present invention. Hereinafter, [the following will describe...] Figure 3 The process of each step is explained.

[0060] In S101 to S110, the registration process for terminal 20 with 5GS is performed.

[0061] S101: Terminal 20 confirms that it has the capability to simultaneously standby in both 5GS and 6GS. Furthermore, terminal 20 sends a registration request message to base station 10A requesting terminal 20 to register with 5GS. This request message contains information related to the terminal's capability to simultaneously standby in both 5GS and 6GS.

[0062] S102: Base station 10A sends a registration request message to AMF 30A requesting terminal 20 to register with 5GS. This request message contains information about the terminal's ability to be on standby simultaneously in both 5GS and 6GS.

[0063] S103: AMF30A envisions a strategy within the UDM framework that allows for dual registration in both the 5GS and 6GS systems.

[0064] S104: As information related to terminal 20, AMF30A sets the terminal capability to be on standby simultaneously in both 5GS and 6GS instead of the information indicating whether it is within 6GS coverage (in the 6G coverage indicator).

[0065] S105: AMF30A sends a request message (Nudm_UECM_Registration request) to UDM30G requesting terminal 20 to register with 5GS. This request message is, for example, expressed as Nudm_UECM_Registration request(Amf3GppAccessRegistration(5g6gDrFlag=1, capable of simultaneous standby in both 5G and 6G)). Amf3GppAccessRegistration is a data type containing information about terminal 20 registered via 3GPP access (see section 6.2.6.2.2 of Non-Patent Document 3). This data type contains newly defined information indicating that dual registration is allowed in both 5GS and 6GS communication systems (5g6gDrFlag=1) and information related to the terminal's ability to simultaneously standby in both 5GS and 6GS.

[0066] S106: UDM30G will associate and store the subscriber identifier (SUPI) of the registered terminal 20 contained in the request message received in S105, as well as the information related to the AMF30A which has the terminal 20 as a subordinate, thereby registering the terminal 20 to the 5GS.

[0067] S107: UDM30G sends a response message (Nudm_UECM_Registration response) to AMF30A in response to the request message received in S105. This request message contains information related to the terminal 20 registered in S106, such as being described as Nudm_UECM_Registration response (Amf3GppAccessRegistration (5g6gDrFlag=1, capable of simultaneous standby in both 5G and 6G)).

[0068] S108: AMF30A stores information in S106 that is registered with UDM30G in association with this device.

[0069] S109: AMF30A sends a response message (Registration Acceptance) to base station 10A in response to the request message received in S102.

[0070] S110: Base station 10A sends a response message (Registration Acceptance) to terminal 20 in response to the request message received in S101.

[0071] In S111 to S114, a process for establishing a PDU session between terminal 20 and 5GS is executed.

[0072] S111: Establish an IMS PDU session between terminal 20 and 5GS.

[0073] S112: Establish a data communication PDU session between terminal 20 and 5GS.

[0074] S113: UPF30C releases the connection between the IMS PDU session and base station 10A, and sets it to a state that can buffer DL user data.

[0075] S114: Perform communication between terminal 20 and 5GS based on a data communication PDU session.

[0076] In S121 to S122, the terminal 20 performs the movement from the 5GS base station 10A to the 6GS base station 10B.

[0077] S121: Imagine that in terminal 20, a strategy of prioritizing the use of 6GS over 5GS is applied in data communication.

[0078] S122: Terminal 20 releases the data communication PDU session established in S112 in 5GS by moving from 5GS to 6GS.

[0079] The following steps in S122 will be explained. Figure 4This is a diagram illustrating an example of the second timing diagram in an embodiment of the present invention. Hereinafter, [the following will be discussed...] Figure 4 The process of each step is explained.

[0080] In S201 to S212, the registration process for terminal 20 to 6GS is performed.

[0081] S201: Terminal 20 confirms that it has the capability to be on standby simultaneously in both 5GS and 6GS. Furthermore, terminal 20 sends a registration request message to the 6G base station 10B, requesting terminal 20 to register with the 6GS. This request message contains information related to the terminal's capability to be on standby simultaneously in both 5GS and 6GS.

[0082] S202: Base station 10B sends a registration request message to 6GAMF30D requesting terminal 20 to register with 6GS. This request message contains information related to the terminal's ability to be on standby simultaneously in both 5GS and 6GS.

[0083] S203:6GAMF30D assumes that, from the perspective of UDM, there exists a strategy that can be applied to both 5GS and 6GS systems (dual registration).

[0084] S204: As information related to terminal 20, the 6GAMF30D is configured to have the terminal capability to be on standby in both 5GS and 6GS simultaneously, instead of the information indicating whether it is within the 6GS coverage area (in the 6G coverage area indicator).

[0085] S205: The 6GAMF30D sends a request message (Nudm_UECM_Registration request) to the UDM30G requesting terminal 20 to register with the 6GS. This request message is described, for example, as Nudm_UECM_Registration request(6gAmf3GppAccessRegistration(5g6gDrFlag=1, capable of standby in both 5G and 6G)). 6GAmf3GppAccessRegistration is contained within... Figure 3The data type described in S105 regarding the information of terminal 20 registered in 5GS (Amf3GppAccessRegistration) is a newly defined data type that includes information about terminal 20 registered in 6GS. This data type includes information indicating the ability to perform dual registration in both 5GS and 6GS systems (5g6gDrFlag=1), as well as information related to the terminal's ability to be on standby simultaneously in both 5GS and 6GS.

[0086] S206: UDM30G will associate and store the subscriber identifier (SUPI) of the registered terminal 20 contained in the request message received in S205 with the information related to the 6GAMF30D, which has terminal 20 as a subordinate, thereby registering terminal 20 to 6GS. That is, UDM30G associates and stores the subscriber identifier (SUPI) of terminal 20, the information related to AMF30A, and the information related to 6GAMF30D.

[0087] S207: UDM30G in Figure 3 In step S106, the information related to AMF30A stored in association with the subscriber identifier of terminal 20 registered in 5GS is not deleted. That is, UDM30G does not deregister the terminal in 5GS for terminal 20 with the same subscriber identifier. Furthermore, UDM30G does not notify AMF30A of this deregistration. Additionally, UDM30G does not notify AMF30A of the terminal registration in 6GS, thus demonstrating that terminal 20 is within the coverage area of ​​5GS.

[0088] S208: UDM30G includes information related to the terminal's ability to simultaneously standby in both 5GS and 6GS, which is stored in S206, including information related to AMF30A and 6GAMF30D.

[0089] S209: UDM30G sends a response message (Nudm_UECM_Registration response) to 6GAMF30D in response to the request message received in S204. This response message contains information indicating the ability to perform dual registration in both 5GS and 6GS systems (5g6gDrFlag = 1), and information related to the terminal's ability to be on standby simultaneously in both 5GS and 6GS systems. Furthermore, for example, the request message is described as Nudm_UECM_Registrationresponse(6gAmf3GppAccessRegistration(5g6gDrFlag = 1, capable of simultaneous standby in both 5G and 6G)).

[0090] S210: The 6GAMF30D stores information associated with this device registered with the UDM30G, including information indicating that it can register in both the 5GS and 6GS systems (5g6gDrFlag=1), and information related to the terminal's ability to be on standby simultaneously in both 5GS and 6GS.

[0091] S211: 6GAMF30D sends a response message (Registration Acceptance) to 6G base station 10B in response to the request message received in S202.

[0092] S212: 6G base station 10B sends a response message (Registration Acceptance) to terminal 20 in response to the request message received in S201.

[0093] In S221 to S222, a process for establishing a PDU session between terminal 20 and 6GS is executed.

[0094] S221: Establish a data communication PDU session between terminal 20 and 6GS.

[0095] S222: Perform communication between terminal 20 and 6GS based on a data communication PDU session.

[0096] The following steps will be explained. Figure 5 This is a diagram illustrating an example of the third timing diagram in an embodiment of the present invention. Hereinafter, [the following will describe...] Figure 5 The process of each step is explained.

[0097] In S301 to S307, the processing of incoming voice calls in 5GS is performed.

[0098] S301: The UPF30C receives a message (SIP INVITE) containing information indicating an incoming voice call as DL user data via the user data path of the IMS PDU session in the 5GS.

[0099] S302: UPF30C sends a message to SMF30B reporting downlink data (PFCP Session Report Request).

[0100] S303: SMF30B sends a request message (Namf_Communication_N1N2MessageTransfer request) to AMF30A for the establishment of a user data path between UPF30C and the base station for the delivery of downlink data.

[0101] S304: AMF30A sends a response message (Namf_Communication_N2MessageTransfer response) to SMF 30B in response to the request message received in S303.

[0102] S305: The AMF30A identifies the PDU session receiving downlink data as an IMS PDU session. The AMF30A is based on... Figure 4 The information stored in S210 identifies that terminal 20 can be on standby in both 5GS and 6GS at the same time, and determines to call terminal 20 in 5GS.

[0103] S306: AMF30A sends a message to base station 10A related to a call for a voice call.

[0104] S307: Base station 10A sends a message to terminal 20 related to a call for a voice call.

[0105] (Second Embodiment)

[0106] In the second embodiment, the following process is performed.

[0107] If a terminal registration request is received from AMF30A and then from 6GAMF30D, UDM30G notifies 6GAMF30D of the destination of AMF30A.

[0108] The AMF30A and 6G AMF30D establish cooperation with each other, but do not perform processing related to information indicating whether they are within 6GS coverage (in the 6G coverage indicator) or information indicating whether there are incoming calls in 5GS (in the 5G voice call indicator).

[0109] If a voice call occurs in 5GS while terminal 20 is within the coverage of 6GS, the AMF30A will execute the call from terminal 20.

[0110] The following uses a timing diagram to illustrate the details of the process. Figure 6 This is a diagram illustrating an example of a first timing diagram in an embodiment of the present invention. Figure 6 Of S401 to S410 shown, except for S405 and S407, they are related to Figure 3 The processes shown in S101 to S110 also perform the 5GS registration process for terminal 20.

[0111] The following explains the processing of S405 and S407.

[0112] S405: AMF30A sends a request message (Nudm_UECM_Registration request) to UDM30G requesting terminal 20 to register with 5GS. This request message is, for example, expressed as Nudm_UECM_Registration request (Amf3GppAccessRegistration(5g6gDrFlag=1)). Amf3GppAccessRegistration is a data type containing information about terminal 20 registering via 3GPP access (see section 6.2.6.2.2 of Non-Patent Document 3). This data type contains newly defined information indicating that dual registration is allowed in both the 5GS and 6GS communication systems (5g6gDrFlag=1).

[0113] S407: UDM30G sends a response message (Nudm_UECM_Registration response) to AMF30A in response to the request message received in S405. This request message contains information related to terminal 20 registered in S406, for example, expressed as Nudm_UECM_Registration response(Amf3GppAccessRegistration(5g6gDrFlag=1)).

[0114] Next, execute Figure 3 S111 to S114 show the process for establishing a PDU session between terminal 20 and 5GS.

[0115] Next, execute Figure 3 As shown in S121 to S122, the terminal 20 moves from the 5GS base station 10A to the 6GS base station 10B.

[0116] Next, the registration process for terminal 20 with 6GS is performed. Figure 7 This is a diagram illustrating an example of the second timing diagram in an embodiment of the present invention. Hereinafter, [the following will describe...] Figure 7 The process of each step is explained.

[0117] In S501 to S515, the registration process for terminal 20 to 6GS is performed.

[0118] S501: Terminal 20 confirms that it has the capability to be on standby simultaneously in both 5GS and 6GS. Furthermore, terminal 20 sends a registration request message to the 6G base station 10B, requesting registration with the 6GS. This request message contains information related to the terminal's capability to be on standby simultaneously in both 5GS and 6GS.

[0119] S502: Base station 10B sends a registration request message to 6GAMF30D requesting terminal 20 to register with 6GS. This request message contains information related to the terminal's ability to be on standby simultaneously in both 5GS and 6GS.

[0120] S503:6GAMF30D envisions a strategy within the UDM framework that allows for dual registration in both the 5GS and 6GS systems.

[0121] S504: 6GAMF30D stores information related to the terminal's ability to simultaneously standby in both 5GS and 6GS modes.

[0122] S505: 6GAMF30D sends a request message (Nudm_UECM_Registration request) to UDM30G requesting terminal 20 to register with 6GS. This request message is, for example, expressed as Nudm_UECM_Registration request(6GAmf3GppAccessRegistration(5g6gDrFlag=1)). 6GAmf3GppAccessRegistration is contained within... Figure 6 The data type described in S405 contains the same information about terminal 20 registered in 5GS (Amf3GppAccessRegistration) and includes information about terminal 20 registered in 6GS. This data type contains information indicating that dual registration is possible in both 5GS and 6GS systems (5g6gDrFlag=1).

[0123] S506: UDM30G will associate and store the subscriber identifier (SUPI) of the registered terminal 20 contained in the request message received in S505 with the information related to the 6GAMF30D, which has terminal 20 as a subordinate, thereby registering terminal 20 to 6GS. That is, UDM30G associates and stores the subscriber identifier (SUPI) of terminal 20, the information related to AMF30A, and the information related to 6GAMF30D.

[0124] S507: UDM30G Figure 6 S406 (and) Figure 3 In the same process as S106, the information related to AMF30A stored in association with the subscriber identifier of terminal 20 registered in 5GS is not deleted. That is, UDM30G does not deregister the terminal in 5GS for terminal 20 with the same subscriber identifier. Furthermore, UDM30G does not notify AMF30A of the deregistration. In addition, UDM30G indicates that terminal 20 is within the coverage area of ​​5GS by not notifying AMF30A of the terminal registration in 6GS.

[0125] S508: UDM30G, for example, determines that terminal 20 has been registered from AMF30A based on the subscriber identifier (SUPI), and determines that in order to cooperate between AMF30A and 6GAMF30D on terminal registration, information related to AMF30A (e.g., instance ID or identifier, which becomes information indicating the destination of the message, etc.) will be sent to 6GAMF30D.

[0126] S509: UDM30G sends a response message (Nudm_UECM_Registration response) to 6GAMF30D in response to the request message received in S505. This response message includes the instance ID of AMF30A, which is the target of the repeated registration collaboration, notified to 6GAMF30D for the collaboration between AMF30A and 6GAMF30D. Alternatively, the request message can be expressed, for example, as Nudm_UECM_Registration response(6gAmf3GppAccessRegistration(5g6gDrFlag=1, Repeated Registration Collaboration Target Instance ID)).

[0127] S510:6GAMF30D decides to cooperate with AMF30A, which is the target of repeated registration cooperation, in connection with the registration of terminal 20.

[0128] S511: The 6GAMF30D sends a request message (Namf_Association_Create request) to the AMF30A requesting settings related to the collaboration between the AMF30D and the 6GAMF30D concerning terminal 20. This request message contains information indicating that terminal 20 is within the coverage area of ​​the 6GS, expressed as, for example, as Namf_Association_Create request.

[0129] S512: AMF30A identifies the 6GAMF30D as a cooperation target based on the request message received in S511.

[0130] S513: AMF30A sends a response message (Namf_Association_Create response) to 6GAMF30D indicating acceptance of the cooperation requested by the request message received in S511.

[0131] S514: The 6GAMF30D sends a response message (Registration Acceptance) to the 6G base station 10B in response to the request message received in S502. This response message contains information indicating that cooperation between the AMF30A and the 6GAMF30D has been established.

[0132] S515: 6G base station 10B sends a response message (Registration Acceptance) to terminal 20 in response to the request message received in S501. This response message contains information indicating that cooperation between AMF30A and 6G AMF30D has been established.

[0133] Next, execute Figure 4 S221 to S222 show the process for establishing a PDU session between terminal 20 and 6GS.

[0134] Next, execute Figure 5 The processing of incoming voice calls in the 5GS shown in S301 to S307.

[0135] Through the above embodiments, in a wireless communication system, the terminal can be on standby in both systems simultaneously without the need for a special network node. This effectively utilizes the capability of the terminal 20 to simultaneously receive (2Rx) in both 5GS and 6GS systems.

[0136] (Device Structure)

[0137] Next, an example of the functional structure of the base station 10, network node 30, and terminal 20 performing the processes and actions described above will be explained. The base station 10, network node 30, and terminal 20 include the functions implemented in the above embodiments. However, the base station 10, network node 30, and terminal 20 may each possess only a portion of the functions described in the embodiments.

[0138] <Base station 10 and network node 30>

[0139] Figure 8 This is a diagram illustrating an example of the functional structure of base station 10 and network node 30. (See diagram for example.) Figure 8 As shown, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130 and a control unit 140. Figure 8The functional structure shown is only one example. The functional distinctions and names of the functional units can be arbitrary, as long as the operations of the embodiments of the present invention can be implemented. Furthermore, network node 30 can have the same functional structure as base station 10. Additionally, network nodes 30 with multiple different functions in the system architecture can also be composed of multiple network nodes 30 separated by function.

[0140] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 or other network node 30 and transmitting the signal via wired or wireless means. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 or other network node 30 and obtaining, for example, higher-level information from the received signals. A communication unit including the transmitting unit 110 and the receiving unit 120 may also be configured.

[0141] The setting unit 130 stores preset setting information and various setting information sent to the terminal 20 into a storage device, and reads it from the storage device as needed. The content of the setting information includes, for example, information related to the communication path in the IMS data channel network.

[0142] As described in the embodiment, the control unit 140 performs processing to enable communication between the communication device equipped on the satellite and the communication device equipped on the ground. Additionally, the control unit 140 performs processing related to communication with the terminal 20. Alternatively, the signal transmission-related functions of the control unit 140 may be included in the transmitting unit 110, and the signal reception-related functions of the control unit 140 may be included in the receiving unit 120.

[0143] Terminal 20

[0144] Figure 9 This is a diagram illustrating an example of the functional structure of terminal 20. (As shown...) Figure 9 As shown, the terminal 20 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. Figure 9 The functional structure shown is only one example. The functional distinctions and names of the functional units can be arbitrary, as long as the operations of the embodiments of the present invention can be implemented. Furthermore, the communication device that becomes the resource holder 20 can also have the same functional structure as the terminal 20.

[0145] The transmitting unit 210 generates a transmission signal based on the transmission data and transmits the signal wirelessly. The receiving unit 220 wirelessly receives various signals and extracts higher-layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has the function of receiving control signals, reference signals, etc., transmitted from the network node 30. A communication unit including the transmitting unit 210 and the receiving unit 220 may also be configured.

[0146] The setting unit 230 stores various setting information received by the receiving unit 220 from the network node 30 in a storage device, and reads it from the storage device as needed. In addition, the setting unit 230 also stores preset setting information. The content of the setting information includes, for example, information related to the communication path in the IMS network.

[0147] As described in the embodiment, the control unit 240 performs processing such as enabling communication between a communication device equipped on a satellite and a communication device equipped on the ground. Alternatively, the signal transmission-related functions of the control unit 240 may be included in the transmitting unit 210, and the signal reception-related functions of the control unit 240 may be included in the receiving unit 220.

[0148] (Hardware structure)

[0149] The block diagrams used in the description of the above embodiments ( Figure 8 and Figure 9 The diagram illustrates blocks organized by function. These functional blocks (components) are implemented through any combination of at least one of hardware and software. Furthermore, there are no particular limitations on the implementation method of each functional block. That is, each functional block can be implemented using a single device that is physically or logically combined, or by directly or indirectly (e.g., using wired, wireless, etc.) connecting two or more physically or logically separate devices. Functional blocks can also be implemented by combining software within the aforementioned single or multiple devices.

[0150] The functions include judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but are not limited to these. For example, the functional block (structural part) that performs the sending function is called the transmitting unit or transmitter. In short, as mentioned above, there are no particular limitations on the implementation method.

[0151] For example, in one embodiment of this disclosure, the base station 10, network node 30, terminal 20, etc., can also function as a computer for processing the wireless communication method of this disclosure. Figure 10This diagram illustrates an example of the hardware structure of a base station 10 and a terminal 20 according to one embodiment of the present disclosure. The network node 30 may have the same hardware structure as the base station 10. The base station 10 and terminal 20 may also be configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007, etc.

[0152] Furthermore, in the following description, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of base station 10 and terminal 20 can be configured to include one or more of the devices shown in the figures, or it can be configured to not include any of them.

[0153] The functions of base station 10 and terminal 20 are implemented by reading predetermined software (program) into hardware such as processor 1001 and storage device 1002, so that processor 1001 performs calculations and controls the communication of communication device 1004 or controls at least one of reading and writing data in storage device 1002 and auxiliary storage device 1003.

[0154] The processor 1001 controls the computer as a whole by instructing the operating system to operate. The processor 1001 may also be a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, the control unit 140 and control unit 240 described above can also be implemented using the processor 1001.

[0155] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage devices 1003 and communication devices 1004, and performs various processes accordingly. As a program, a program is used that causes the computer to perform at least a portion of the actions described in the above embodiments. For example, Figure 8 The control unit 140 of the base station 10 shown can be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Alternatively, for example, Figure 9 The control unit 240 of the terminal 20 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Although it has been described that the various processes described above are executed by one processor 1001, the various processes described above can also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented by one or more chips. In addition, the program can also be sent from the network via a telecommunications line.

[0156] Storage device 1002 is a computer-readable recording medium, and may be composed of at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. Storage device 1002 may also be referred to as a register, cache, main memory (main storage device), etc. Storage device 1002 can store programs (program code), software modules, etc., that are executable for implementing the communication method according to one embodiment of this disclosure.

[0157] The auxiliary storage device 1003 is a computer-readable recording medium, such as at least one of the following: CD-ROM (CompactDisc ROM) or other optical discs, hard disks, floppy disks, magneto-optical discs (e.g., compact discs, digital multifunction discs, Blu-ray discs), smart cards, flash memory (e.g., cards, sticks, key drives), floppy disks, magnetic stripes, etc. The aforementioned storage medium may, for example, be a database, server, or other suitable media that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0158] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network. It may also be referred to as a network device, network controller, network interface card (NIC), communication module, etc. The communication device 1004 may, for example, be configured to include a high-frequency switch, duplexer, filter, frequency synthesizer, etc., to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, transceiver antennas, amplifiers, transceiver units, transmission path interfaces, etc., can also be implemented using the communication device 1004. The transceiver unit may also be physically or logically separated into a transmitting unit and a receiving unit.

[0159] Input device 1005 is an input device that accepts input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). Output device 1006 is an output device that performs output to external sources (e.g., display, speaker, LED, etc.). Alternatively, input device 1005 and output device 1006 can also be integrated (e.g., a touch panel).

[0160] Furthermore, the processor 1001 and storage device 1002, among other devices, are connected via a bus 1007 for communicating information. The bus 1007 can be configured using a single bus or different buses can be used between each device.

[0161] Furthermore, the base station 10 and the terminal 20 can be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or a FPGA (Field Programmable Gate Array), and can also use this hardware to implement part or all of the functional blocks. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0162] Figure 11 An example of the structure of vehicle 2001 is shown. For example... Figure 11 As shown, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a gearshift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. The various forms / implementations described in this disclosure can also be applied to communication devices mounted on the vehicle 2001, for example, to the communication module 2013.

[0163] The drive unit 2002 may be composed, for example, an engine, a motor, or a hybrid power system of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a steering wheel) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0164] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (I / O port) 2033. Signals from various sensors 2021 to 2029 of the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0165] The signals from various sensors 2021 to 2029 include current signals from current sensor 2021 that monitors the current of the motor, speed signals of the front and rear wheels obtained by speed sensor 2022, air pressure signals of the front and rear wheels obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal depress signal obtained by accelerator pedal sensor 2029, brake pedal depress signal obtained by brake pedal sensor 2026, gear lever operation signal obtained by gear lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0166] The Information Service Unit 2012 comprises various devices such as a car navigation system, audio system, speakers, television, and radio, used to provide (output) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information obtained from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Service Unit 2012 may include input devices that accept input from external sources (such as keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.), and may also include output devices that perform output to external sources (such as displays, speakers, LED lights, touch panels, etc.).

[0167] The Driver Assistance System 2030 comprises various devices used to prevent accidents or reduce driver workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning devices (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyroscope systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. Furthermore, the Driver Assistance System 2030 transmits and receives various information via the communication module 2013 to achieve driver assistance or autonomous driving functions.

[0168] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via the communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheel 2007, rear wheel 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the vehicle 2001 via the communication port 2033.

[0169] The communication module 2013, controlled by the microprocessor 2031 of the electronic control unit 2010, is a communication device capable of communicating with external devices. For example, it can transmit and receive various types of information with external devices via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0170] The communication module 2013 can also wirelessly transmit at least one of the signals input to the electronic control unit 2010 from the various sensors 2021-2028 described above, the information obtained based on those signals, and the information obtained via the information service unit 2012 based on input from an external source (user) to an external device. The electronic control unit 2010, the various sensors 2021-2028, and the information service unit 2012 can also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 2013 can contain information based on the aforementioned inputs.

[0171] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from external devices and displays it on the information service unit 2012 of the vehicle 2001. The information service unit 2012 can also be referred to as an output unit (for example, an output unit that outputs information to devices such as displays and speakers based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)). Furthermore, the communication module 2013 stores the various information received from external devices in a memory 2032 available to the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gearshift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., of the vehicle 2001 based on the information stored in the memory 2032.

[0172] <Postscript>

[0173] (Note 1)

[0174] A terminal having: The control unit confirms that this terminal has the terminal capability to be on standby simultaneously in the first communication system and the second communication system; The transmitting unit, when within the coverage area of ​​the first communication system, sends a first registration request message to a first network node in the first communication system. The first message contains information related to the terminal's ability to simultaneously remain on standby in both the first and second communication systems. After moving to the second communication system, a second message requesting registration is sent to a second network node in the second communication system. This second message contains information regarding the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The receiving unit is in standby mode simultaneously in both the first and second communication systems.

[0175] (Note 2)

[0176] A network node, which is a network node in a first communication system providing voice communication functionality, has the following characteristics: The control unit, for terminals with a single subscriber information, is capable of repeated registration in both the first and second communication systems; and The receiving unit receives a first message requesting registration from the terminal, the first message containing information related to the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The receiving unit receives a second message from the second network node, which contains information indicating an incoming voice call. The network node also has a transmitting unit that sends a third message to the base station relating to the call for the voice call.

[0177] (Note 3)

[0178] According to the network node described in Appendix 2, the network node sends a fourth message to the third network node, the fourth message containing information related to the terminal's ability to be on standby simultaneously in both the first and second communication systems.

[0179] (Note 4)

[0180] A network node having: A receiving unit receives a first message requesting registration of a first terminal from a first network node of a first communication system, and a second message requesting registration of a second terminal from a second network node of a second communication system. The first message includes information indicating permission to register repeatedly in both the first and second communication systems, and information related to the terminal's ability to simultaneously remain on standby in both systems. The second message includes information indicating permission to register repeatedly in both systems, and information related to the terminal's ability to simultaneously remain on standby in both systems. The control unit, if the subscriber identifier in the registration of the first terminal is the same as the subscriber identifier in the registration of the second terminal, will not cancel the registration of the first terminal. The control unit indicates that the terminal is within the coverage area of ​​the first communication system by not notifying the first network node that the second terminal has registered.

[0181] (Note 5)

[0182] A communication method, executed by a terminal, comprising the following steps: Confirm that this terminal has the capability to be in standby mode simultaneously in the first communication system and the second communication system; When within the coverage area of ​​the first communication system, a first message requesting registration is sent to the first network node in the first communication system. The first message contains information related to the terminal's ability to be on standby simultaneously in the first communication system and the second communication system. After moving to the second communication system, a second message requesting registration is sent to a second network node in the second communication system. This second message contains information regarding the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The system is in standby mode simultaneously in both the first and second communication systems.

[0183] Regardless of any of Notes 1 through 5, in a wireless communication system, a terminal can be on standby in two systems simultaneously without the need for a special network node.

[0184] (Supplement to the implementation method)

[0185] The embodiments of the present invention have been described above, but the disclosed invention is not limited to such embodiments. Those skilled in the art should understand various modifications, alterations, substitutions, and replacements. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these values ​​are merely examples, and any appropriate values ​​may be used. The distinctions between items in the above description are not essential to the present invention. Items described in two or more items may be combined as needed, and items described in one item may be applied to items described in another item (as long as there is no contradiction). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. Multiple functional units may be operated by a single physical component, or a single functional unit may be operated by multiple physical components. Regarding the processing described in the embodiments, the order of processing may be interchanged unless there is a contradiction. For ease of explanation, a functional block diagram is used to illustrate the base station 10 and terminal 20, but such a device may also be implemented by hardware, software, or a combination thereof. The software operating according to the embodiments of the present invention via the processor of the base station 10 and the software operating according to the embodiments of the present invention via the processor of the terminal 20 may also be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server and other suitable storage media, respectively.

[0186] Furthermore, the notification of information is not limited to the forms / implementations described in this disclosure, and other methods may also be used. For example, information notification may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC connection setup message, an RRC connection reconfiguration message, etc.

[0187] The various forms / implementations described in this disclosure can also be applied to systems utilizing LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The system may include at least one of 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), other suitable systems, and next-generation systems based on, modified, created, or defined by these systems. Furthermore, multiple systems may be combined (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.).

[0188] The processing procedures, timing, and flow of the various forms / implementations described in this specification may be rearranged in order, provided there is no contradiction. For example, the elements of various steps are indicated using an illustrative order for the methods described in this disclosure, but are not limited to the specific order indicated.

[0189] In this specification, certain actions performed by base station 10 may sometimes also be performed by its upper node, depending on the circumstances. In a network consisting of one or more network nodes having base station 10, it is obvious that various actions performed to communicate with terminal 20 can be performed by at least one of base station 10 and other network nodes besides base station 10 (e.g., MME or S-GW, but not limited to these). The above example illustrates the case where there is only one other network node besides base station 10, but other network nodes can also be a combination of multiple other network nodes (e.g., MME and S-GW).

[0190] The information or signals described in this disclosure can be output from a higher (or lower) layer to a lower (or higher) layer. They can also be input or output via multiple network nodes.

[0191] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0192] The determination in this disclosure can be made by a value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value).

[0193] Software, whether called software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as referring to commands, command sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0194] In addition, software, commands, information, etc., can be sent and received via a transmission medium. For example, when software is sent from a webpage, server, or other remote source 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.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0195] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc., that may be involved in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0196] Furthermore, the terms used in this disclosure and those necessary for understanding this disclosure may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and symbol may also be a signal (signaling). Additionally, a signal may also be a message. Furthermore, a component carrier (CC) may also be referred to as carrier frequency, cell, frequency carrier, etc.

[0197] The terms “system” and “network” as used in this disclosure are used interchangeably.

[0198] Furthermore, the information, parameters, etc., described in this disclosure can be represented using absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources can also be indicated using indexes.

[0199] The names used for the above parameters are non-limiting in any respect. Furthermore, the formulas, etc., using these parameters sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by all appropriate names, therefore the various names assigned to these channels and information elements are non-limiting in any respect.

[0200] In this disclosure, the terms "base station (BS)," "wireless base station," "base station device," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. Sometimes, terms such as macro cell, small cell, femtocell, and picocell are also used to refer to base stations.

[0201] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, its coverage area can be divided into several smaller areas, each of which can provide communication services through a base station subsystem (e.g., a small indoor base station RRH: Remote Radio Head). Terms such as "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0202] In this disclosure, the base station sending information to the terminal can also be replaced by the base station instructing the terminal on information-based control / actions.

[0203] In this disclosure, the terms "Mobile Station (MS)," "User Terminal (user terminal)," "User Equipment (UE)," and "Terminal" can be used interchangeably.

[0204] For mobile stations, those skilled in the art sometimes also use the following terms: subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, client, or some other appropriate terms.

[0205] At least one of the base station and mobile station can also be referred to as a transmitting device, receiving device, communication device, etc. Furthermore, at least one of the base station and mobile station can also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object with an arbitrary speed of movement. It also includes situations where the mobile body is stationary. Examples of mobile bodies include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, rear cars, rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, Drone (registered trademark), multi-rotor helicopters, quadcopter helicopters, balloons, and objects mounted on them. Additionally, the mobile body can also be a mobile body that moves autonomously based on operating commands. It can be a means of transportation (e.g., car, airplane), a mobile body that moves unmanned (e.g., drone, autonomous vehicle), or a robot (humanized or unmanned). Furthermore, at least one of the base station and mobile station also includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station can be an IoT (Internet of Things) device such as a sensor.

[0206] Furthermore, the base station in this disclosure can also be replaced by a user terminal. For example, the communication between the base station and the user terminal can be replaced by communication between multiple terminals 20 (e.g., D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.), and various forms / implementations of this disclosure can also be applied. In this case, the terminal 20 can also be configured to have the functions of the base station 10 described above. In addition, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "side"). For example, uplink channel, downlink channel, etc. can also be replaced with side channel.

[0207] Similarly, the user terminal in this disclosure can also be replaced by a base station. In this case, the base station can also be configured to have the functions of the aforementioned user terminal.

[0208] The terms "determining" and "determining" as used in this disclosure sometimes encompass a variety of actions. For example, "determining" or "determining" may include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining, which are considered as actions of "determining" or "determining." Furthermore, "determining" or "determining" may include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in memory), which are considered as actions of "determining" or "determining." Moreover, "determining" or "determining" may include actions such as resolving, selecting, choosing, establishing, and comparing, which are considered as actions of "determining" or "determining." That is, "judgment" and "decision" can include matters that are considered as having been "judged" or "decided". In addition, "judgment (decision)" can also be replaced by "assuming", "expecting", "considering", etc.

[0209] The terms “connected,” “coupled,” or any variations thereof are intended to indicate any direct or indirect connection or combination between two or more elements, including cases where there is one or more intermediate elements between the two elements that are “connected” or “coupled.” The combination or connection between elements can be physical, logical, or a combination of these. For example, “access” can be used instead of “connected.” In the context of this disclosure, it can be understood that two elements are “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, and, as some non-limiting and non-inclusive examples, using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible regions) to “connect” or “couple” to each other.

[0210] The reference signal can be simply called RS (Reference Signal), or, depending on the standard applied, pilot.

[0211] As used in this disclosure, the word "based on" does not mean "based on only" unless otherwise expressly stated. In other words, the word "based on" means both "based on only" and "based on at least".

[0212] Any reference to elements using the designations "first," "second," etc., as used in this disclosure does not necessarily limit the number or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, references to the first and second elements do not imply that only two elements can be taken, or that in any form the first element must precede the second element.

[0213] Alternatively, the "unit" in the structure of the above devices can be replaced with "section", "circuit", "equipment", etc.

[0214] When the terms "include," "including," and their variations are used in this disclosure, these terms, like the term "comprising," imply inclusion. Furthermore, the term "or" as used in this disclosure does not refer to XOR.

[0215] In this disclosure, for example, in cases where articles are added through translation, such as in English (e.g., a, an, and the), this disclosure may also include cases where the noun following these articles is in a plural form.

[0216] In this disclosure, the phrase "A and B are different" can mean "A and B are not the same." Furthermore, this phrase can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted in the same way as "different."

[0217] The various forms / implementations described in this disclosure can be used individually or in combination, and can be switched depending on the execution. Furthermore, the notification of predetermined information (e.g., a "It is X" notification) is not limited to being explicit, but can also be implicit (e.g., not being notified of the predetermined information).

[0218] The present disclosure has been described in detail above, but it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the present disclosure is for illustrative purposes only and is not intended to be limiting.

[0219] Label Explanation

[0220] 10 base stations

[0221] 110 Dispatch Department

[0222] 120 Receiving Department

[0223] 130 Setting Department

[0224] 140 Control Department

[0225] 20 terminals

[0226] 210 Sending Department

[0227] 220 Receiving Department

[0228] 230 Setting Department

[0229] 240 Control Department

[0230] 30 network nodes

[0231] 1001 processor

[0232] 1002 Storage device

[0233] 1003 Auxiliary storage device

[0234] 1004 Communication device

[0235] 1005 Input Device

[0236] 1006 Output Device

[0237] Vehicle 2001

[0238] 2002 Drive Unit

[0239] 2003 Steering Unit

[0240] 2004 Accelerator Pedal

[0241] 2005 Brake Pedal

[0242] 2006 gearshift lever

[0243] 2007 front wheel

[0244] 2008 rear wheel

[0245] 2009 axle

[0246] 2010 Electronic Control Department

[0247] 2012 Information Service Department

[0248] 2013 Communication Module

[0249] 2021 Current Sensor

[0250] 2022 Speed ​​Sensor

[0251] 2023 Barometric Pressure Sensor

[0252] 2024 vehicle speed sensor

[0253] 2025 Accelerometer

[0254] 2026 Brake Pedal Sensor

[0255] 2027 Gearshift sensor

[0256] 2028 Object Detection Sensor

[0257] 2029 Accelerator Pedal Sensor

[0258] 2030 Driver Assistance Systems Department

[0259] 2031 microprocessor

[0260] 2032 Memory (ROM, RAM)

[0261] 2033 Communication Port (IO Port)

Claims

1. A terminal having: The control unit confirms that this terminal has the terminal capability to be on standby simultaneously in the first communication system and the second communication system; The transmitting unit, when within the coverage area of ​​the first communication system, sends a first registration request message to a first network node in the first communication system. The first message contains information related to the terminal's ability to simultaneously remain on standby in both the first and second communication systems. After moving to the second communication system, a second message requesting registration is sent to a second network node in the second communication system. This second message contains information regarding the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The receiving unit is in standby mode simultaneously in both the first and second communication systems.

2. A network node, which is a network node in a first communication system providing voice communication functionality, the network node having: The control unit, for terminals with a single subscriber information, is capable of repeated registration in both the first and second communication systems; and The receiving unit receives a first message requesting registration from the terminal, the first message containing information related to the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The receiving unit receives a second message from the second network node, which contains information indicating an incoming voice call. The network node also has a transmitting unit that sends a third message to the base station relating to the call for the voice call.

3. The network node according to claim 2, wherein, The network node sends a fourth message to the third network node, the fourth message containing information related to the terminal's ability to be on standby simultaneously in both the first and second communication systems.

4. A network node having: The receiving unit receives a first message requesting registration of a first terminal from a first network node of a first communication system, and a second message requesting registration of a second terminal from a second network node of a second communication system, wherein... The first message contains information indicating that duplicate registration is permitted in both the first and second communication systems, as well as information related to the terminal capability to be on standby simultaneously in both the first and second communication systems. The second message contains information indicating that duplicate registration is permitted in both the first and second communication systems, as well as information related to the terminal capability to be on standby simultaneously in both the first and second communication systems. as well as The control unit, if the subscriber identifier in the registration of the first terminal is the same as the subscriber identifier in the registration of the second terminal, will not cancel the registration of the first terminal. The control unit indicates that the terminal is within the coverage area of ​​the first communication system by not notifying the first network node that the second terminal has registered.

5. A communication method executed by a terminal, the communication method comprising the following steps: Confirm that this terminal has the capability to be in standby mode simultaneously in the first communication system and the second communication system; When within the coverage area of ​​the first communication system, a first message requesting registration is sent to a first network node in the first communication system. The first message contains information related to the terminal's ability to be on standby simultaneously in the first communication system and the second communication system. After moving to the second communication system, a second message requesting registration is sent to a second network node in the second communication system. This second message contains information regarding the terminal's ability to simultaneously remain on standby in both the first and second communication systems. The system is in standby mode simultaneously in both the first and second communication systems.

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