MT service information management method and device

Abstract

A method for managing mobile terminal (MT) service information to a multi-subscriber identity module (SIM) user equipment (UE) through non-third generation partnership project (N3GPP) access in a wireless communication network is provided. The multi-SIM UE determines an ongoing service on a first SIM of the multi-SIM UE through 3GPP access; the multi-SIM UE manages MT service information for a second SIM of the multi-SIM UE using N3GPP access based on the ongoing service on the 3GPP access of the first SIM of the multi-SIM UE.

Description

Technical Field

[0001] The present disclosure relates to wireless communications, and more particularly, to a method for managing mobile terminal (MT) service information through wireless non-3rd Generation Partnership Project (N3GPP) access and a multi-Subscriber Identity Module (SIM) User Equipment (UE) in a communication network. Background Art

[0002] In order to meet the needs caused by the increasing wireless data services after the commercialization of the fourth generation (4G) communication system, efforts have been made to develop advanced fifth generation (5G) systems or pre-5G communication systems. For this reason, 5G or pre-5G communication systems are also referred to as fourth generation (4G) network communication systems or post-long term evolution (LTE) systems. The implementation of 5G communication systems using hyperfrequency millimeter wave (mmWave) bands (e.g., 60 gigahertz (GHz) bands) is believed to achieve higher data transmission rates. In order to reduce the propagation loss of radio waves and increase the transmission range in the hyperband, beamforming, massive multiple input multiple output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, analog beamforming and massive antenna technology are being discussed. In order to improve the system network, technologies for advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multipoint (CoMP), receiving end interference elimination, etc. are also developed in 5G communication systems. In addition, in 5G systems, advanced coded modulation (ACM) such as hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM), sliding window superposition coding (SWSC), and advanced access technologies such as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) are being developed.

[0003] At the same time, the Internet is evolving from a human-centric connectivity network where humans generate and consume information to an Internet of Things (IoT) network where distributed entities such as things send, receive and process information without human intervention. For example, Internet of Everything (IoE) technologies combined with IoT have also emerged, such as big data processing technologies through connections with cloud servers. In order to realize IoT, various technologies are required, such as sensing technologies, wired / wireless communications and network infrastructure, service interface technologies and security technologies, and recently, even technologies for sensor networks, machine-to-machine (M2M), and machine-type communications (MTC) for connections between things are being studied. This IoT environment can provide intelligent Internet technology (IT) services that generate new value for human life by collecting and analyzing data generated between connected things. Through the integration and combination between existing information technology (IT) and various industrial applications, IT can be applied to various fields, such as smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart home appliances, and advanced medical services.

[0004] In this regard, various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies related to sensor networks, M2M, MTC, etc. are implemented by 5G communication technologies such as beamforming, MIMO, array antenna schemes, etc. Even the application of cloud radio access networks (cloud RAN) as the above-mentioned big data processing technology can be regarded as an example of the combination of 5G and IoT technologies.

[0005] Generally, with the advancement of technology, multi-subscriber identity module (SIM) user equipment (UE) is widely used and has the benefit of obtaining services from various operators. Consider a multi-SIM user equipment (UE) with a single receiver and transmitter, or consider a multi-SIM UE with dual receivers and a single transmitter. The multi-SIM UE is in a connected mode using services on the first SIM of the multi-SIM UE on a 3GPP access. The multi-SIM UE receives a paging for the second SIM from the network. The multi-SIM UE does not know what type of pending service is for the second SIM. Therefore, the multi-SIM UE responds to the paging on the 3GPP access and enters the connected mode on the 3GPP access by interrupting the service performed on the first SIM. After entering the connected mode, the multi-SIM UE realizes that the service on the second SIM is not the first priority compared to the service performed on the first SIM. Therefore, the multi-SIM UE will have to abandon the service on the second SIM and fall back to the service on the first SIM on the 3GPP access. This will have a considerable impact on the service on the first SIM on the UE side (e.g., reducing throughput). At the same time, the network will face considerable waste of resources.

[0006] Furthermore, when the service is ongoing on the first SIM, the multi-SIM UE may not be able to read the paging if the multi-SIM UE has one receiver and one transmitter, and even if the multi-SIM UE has two receivers and reads the paging message, the multi-SIM UE cannot respond to the paging message on the 3GPP access because it only has one transmitter. This will have a considerable impact on network resources because the network is paging the multi-SIM UE and the multi-SIM UE cannot respond to the paging message.

[0007] It would therefore be desirable to address the above-mentioned or other disadvantages, or at least provide a useful alternative. Summary of the invention

[0008] [Technical solution]

[0009] The present disclosure relates to a method for managing mobile terminal (MT) service information in a wireless communication network through non-3rd Generation Partnership Project (N3GPP) access. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is illustrated in the accompanying drawings, in which the same reference numerals denote corresponding parts in the different drawings. The embodiments herein will be better understood according to the following description with reference to the accompanying drawings, in which:

[0011] Figure 1 is a block diagram of a multi-SIM UE 100 for managing MT service information through N3GPP access in a wireless communication network according to an embodiment disclosed herein;

[0012] Figure 2A is a flow chart illustrating a method for managing MT service information through N3GPP access in a wireless communication network according to an embodiment disclosed herein;

[0013] Figure 2B is another flow chart illustrating a method for managing MT service information through N3GPP access in a wireless communication network according to an embodiment disclosed herein;

[0014] Figure 3 is a signaling diagram illustrating a situation where resources are wasted when the multi-SIM UE 100 is unaware of the pending service type for the second SIM 160 according to the prior art;

[0015] Figure 4A is a signaling diagram illustrating a case of managing MT service information using a notification message (with MT cause) received from a second SIM network via N3GPPA according to an embodiment disclosed herein;

[0016] Figure 4Bis a signaling diagram illustrating a scenario of managing MT service information using a paging message received from a second SIM network via 3GPPA according to an embodiment disclosed herein.

[0017] Figure 5A is an example showing a notification (or NAS) message sent from the AMF to the multi-SIM UE 100 for managing MT service information through N3GPP access (Wi-fi access) according to an embodiment disclosed herein.

[0018] Figure 5B is an example illustration according to the embodiments disclosed herein, wherein an N1 signaling connection over N3GPPA from the AMF to the multi-SIM UE 100 is used to manage MT service information;

[0019] Figure 6 is a signaling diagram showing a case where a multi-SIM UE 100 automatically sends a NAS message with a paging filtering rule to an AMF of a second SIM 160 of the multi-SIM UE 100 through N3GPP access according to an embodiment disclosed herein; and

[0020] Figure 7 is a signaling diagram illustrating a case where an active data connection in a multi-SIM UE 100 is suspended by a wireless communication network according to embodiments disclosed herein.

[0021] Figure 8 Schematically illustrated are entities according to embodiments of the present disclosure.

[0022] Fig. 9 A user equipment (UE) according to an embodiment of the present disclosure is shown.

[0023] Fig.10 A core network entity according to an embodiment of the present disclosure is schematically illustrated. DETAILED DESCRIPTION

[0024] The embodiments of the present invention and their various features and advantageous details are explained more fully with reference to the non-limiting embodiments shown in the accompanying drawings and described in detail in the following description. Descriptions of well-known components and processing techniques are omitted so as not to unnecessarily obscure the embodiments of the present invention. In addition, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments. Unless otherwise stated, the term "or" used herein refers to a non-exclusive or. The examples used herein are intended only to help understand the ways in which the embodiments of the present invention can be practiced, and further enable those skilled in the art to practice the embodiments of the present invention. Therefore, the examples should not be interpreted as limiting the scope of the embodiments of the present invention.

[0025] As tradition in the art, embodiments can be described and illustrated according to the block of performing one or more functions described.These blocks can be referred to as units or modules etc. here, and these blocks are physically implemented by analog or digital circuits, such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hard-wired circuits etc., and can be optionally driven by firmware and software.For example, the circuit can be implemented in one or more semiconductor chips, or implemented on substrate supports such as printed circuit boards etc.The circuit constituting the block can be implemented by dedicated hardware, or by a processor (for example, one or more programmed microprocessors and associated circuits) or by a combination of dedicated hardware for executing some functions of the block and a processor for executing other functions of the block.Without departing from the scope of the present disclosure, each block of the embodiment can be physically divided into two or more interactive and discrete blocks.Equally, without departing from the scope of the present disclosure, the block of the embodiment can be physically combined into more complex blocks.

[0026] The accompanying drawings are used to help easily understand various technical features, and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. Therefore, the present disclosure should be interpreted as extending to any variants, equivalents and substitutions in addition to those specifically set forth in the accompanying drawings. Although the terms "first", "second", etc. can be used to describe various elements in this article, these elements should not be limited by these terms. These terms are usually only used to distinguish one element from another element.

[0027] The proposed method attempts to utilize an alternative path to reach multi-SIM UEs using non-3GPP access. The access and mobility management function (AMF) will serve 3GPP access (3GPPA) and non-3GPP access (N3GPPA) in the same public land mobile network (PLMN). That is, when the UE is registered to the same PLMN and registered to 3GPPA and N3GPPA. Then, if the AMF receives downlink data for 3GPP access, when the N3GPPA CM state on the N3GPP access is 5GMM_REGISTERED and CM_CONNECTED and the CM state on the 3GPPA is IDLE, a notification message or non-access stratum (NAS) message from the AMF can be sent to the multi-SIM UE100 via N3GPPA (e.g., Wifi access). This alternative path to reach multi-SIM UEs is explored in the present invention to solve the above-mentioned problems related to waste of network resources on 3GPP access and increase the throughput of multi-SIM UEs.

[0028] A primary object of the embodiments herein is to provide a method and a multi-Subscriber Identity Module (SIM) User Equipment (UE) for managing Mobile Terminal (MT) service information in a wireless communication network via non-3rd Generation Partnership Project (N3GPP) access.

[0029] Another object of embodiments herein is to determine ongoing services on a first SIM of a multi-SIM UE over a 3GPP access.

[0030] Another object of embodiments herein is to determine whether a service type pending for the second SIM over the 3GPP access has a higher priority than an ongoing service for the first SIM.

[0031] Another object of embodiments herein is to manage MT service information for a second SIM of a multi-SIM UE using N3GPP access based on ongoing services on a first SIM of the multi-SIM UE over 3GPP access.

[0032] Another object of the embodiments herein is to send a NOTIFICATION RESPONSE message to the AMF controller via N3GPP access, indicating that the multi-SIM UE does not intend to respond to the NOTIFICATION message for the second SIM, when the priority of the pending service type for the second SIM on the 3GPP access is not higher than the priority of the ongoing service for the first SIM on the 3GPP access.

[0033] Another object of the embodiments herein is to automatically send a NAS message with paging filtering rules to the AMF controller of the second SIM of a multi-SIM UE over N3GPP access.

[0034] Therefore, embodiments herein disclose a method for managing mobile terminal (MT) service information to a multi-subscriber identity module (SIM) user equipment (UE) 100 via non-3rd generation partnership project (N3GPP) access in a wireless communication network. The multi-SIM UE 100 determines ongoing services on a first SIM 150 of the multi-SIM UE 100 via 3GPP access; and the multi-SIM UE 100 manages MT service information for a second SIM 160 of the multi-SIM UE 100 based on the ongoing services on the 3GPP access of the first SIM 150 of the multi-SIM UE 100 using the N3GPP access.

[0035] In one embodiment, managing MT service information for a second SIM 160 of the multi-SIM UE 100 based on an ongoing service on a 3GPP access of a first SIM 150 of the multi-SIM UE 100 using N3GPP access by the multi-SIM UE 100 includes receiving, by the multi-SIM UE 100, a notification message for initiating MT services for the second SIM 160 via 3GPP access from an AMF controller of the second SIM 160 of the multi-SIM UE 100 via N3GPP access. The NOTIFICATION message includes information on the type of MT services to be initiated for the second SIM 160 via 3GPP access. In addition, the method includes: determining, by the multi-SIM UE 100, a priority of a service type for the second SIM 160 to be initiated via 3GPP access and a priority of an ongoing service on the first SIM 150 on 3GPP access; and determining, by the multi-SIM UE 100, whether the priority of the pending service type for the second SIM 160 on 3GPP access is higher than the priority of the ongoing service on the first SIM 150. In addition, the method includes performing, by the multi-SIM UE 100, one of the following: in response to determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service on the first SIM 150 on the 3GPP access, triggering a service request or a registration request for the second SIM 160 to the AMF controller on the 3GPP access, and moving to a connected mode on the second SIM 160, and in response to determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is not higher than the priority of the ongoing service on the first SIM 150 on the 3GPP access, sending a NOTIFICATION RESPONSE message to the AMF controller over the N3GPP access, the NOTIFICATION RESPONSE message indicating that the multi-SIM UE 100 does not intend to respond to the NOTIFICATION message for the second SIM 160.

[0036] In an embodiment, the second SIM 160 of the Multi-SIM UE 100 is in CM_CONNECTED state for N3GPP access and CM_IDLE state for 3GPP access.

[0037] In an embodiment, one of a Mobile Termination (MT) cause and a Paging cause is used to indicate the service type.

[0038] In an embodiment, managing MT service information for a second SIM 160 of the multi-SIM UE 100 using N3GPP access based on ongoing services on a first SIM 150 of the multi-SIM UE 100 by the multi-SIM UE 100 includes automatically sending, by the multi-SIM UE 100, a NAS message with paging filtering rules to an AMF controller of the second SIM 160 of the multi-SIM UE 100 through the N3GPP access.

[0039] In an embodiment, the paging filtering rules include at least one of a rejection cause value, a timer value, a list of services for which the multi-SIM UE 100 wishes to receive paging via 3GPP access, a list of services for which the multi-SIM UE 100 wishes to receive notifications via non-N3GPP access, a list of paging causes and services for which the multi-SIM UE 100 does not wish to receive paging via 3GPPA, and a list of paging causes and services for which the multi-SIM UE 100 does not wish to receive notifications via N3GPPA.

[0040] In an embodiment, the paging filtering rules are determined based on ongoing services on the first SIM 150 of the multi-SIM UE 100 .

[0041] Therefore, embodiments herein disclose a multi-SIM UE 100 for managing mobile terminal (MT) service information in a wireless communication network via non-3rd Generation Partnership Project (N3GPP) access. The multi-SIM UE 100 includes a communicator 110, a memory 120, a processor 130, and an MT service management controller 140. The MT service management controller 140 is configured to determine ongoing services of a first SIM 150 of the multi-SIM UE 100 on 3GPP access; and based on the ongoing services of the first SIM 150 of the multi-SIM UE 100 on 3GPP access, manage MT service information for a second SIM 160 of the multi-SIM UE 100 using N3GPP access.

[0042] When considered in conjunction with the following description and the accompanying drawings, these and other aspects of the embodiments herein will be better explained and understood. However, it should be understood that the following description, although indicating preferred embodiments and many specific details thereof, is provided by way of illustration and not limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit of the present invention, and the embodiments herein include all such modifications.

[0043] Therefore, embodiments herein disclose a method for managing mobile terminal (MT) service information to a multi-subscriber identity module (SIM) user equipment (UE) 100 through non-3rd generation partnership project (N3GPP) access in a wireless communication network. The multi-SIM UE 100 determines ongoing services of a first SIM 150 of the multi-SIM UE 100 on 3GPP access; and the multi-SIM UE 100 manages MT service information of a second SIM 160 of the multi-SIM UE 100 using N3GPP access based on the ongoing services of the first SIM 150 of the multi-SIM UE 100 on 3GPP access.

[0044] Referring now to the drawings and more particularly to Figures 1 to 10 , wherein like reference numerals indicate corresponding features throughout the drawings, the preferred embodiments are shown throughout the drawings.

[0045] Figure 1 is a block diagram of a multi-SIM UE 100 for managing MT service information through N3GPP access in a wireless communication network according to embodiments disclosed herein.

[0046] Consider a wireless communication network including a multi-SIM UE 100 and an access and mobility management function (AMF) controller at the wireless communication network end. Consider that the multi-SIM UE 100 includes two SIMs, namely a first SIM 150 and a second SIM 160. Generally, from the perspective of the multi-SIM UE 100, the first SIM 150 and the second SIM 160 may belong to the same device or different networks. However, from the perspective of the wireless communication network, the first SIM 150 and the second SIM 160 are considered to be two separate user equipments (UEs). Therefore, the term first SIM 150 refers to a first UE including a first wireless protocol stack, a first SIM 150 card, and a portion of an application layer. Similarly, the term second SIM 160 refers to a second UE including a second wireless protocol stack, a second SIM 160 card, and the remaining portion of an application layer. Therefore, from the perspective of the wireless communication network, the first SIM 150 may be referred to as a first UE 150, and the second SIM 160 may be referred to as a second UE 160.

[0047] Reference Figure 1 The multi-SIM UE 100 is, for example, a mobile phone, a smart phone, a personal digital assistant (PDA), a tablet, a wearable device, etc. The multi-SIM UE 100 includes a communicator 110, a memory 120, a processor 130, a mobile terminal (MT) service management controller 140, a first SIM 150 and a second SIM 160.

[0048] In an embodiment, the communicator 110 is configured to enable communication between various hardware elements of the Multi-SIM UE 100 .

[0049] Memory 120 may include a non-volatile storage element. Examples of such non-volatile storage elements may include a magnetic hard disk, an optical disk, a floppy disk, a flash memory, or an electrically programmable memory (EPROM) or an electrically erasable programmable (EEPROM) memory. In addition, in some examples, memory 120 may be considered a non-transitory storage medium. The term "non-transitory" may mean that the storage medium is not contained in a carrier or propagating signal. However, the term "non-transitory" should not be interpreted as memory 120 being non-removable. In some instances, memory 120 is configured to store a larger amount of information than memory. In some instances, a non-transitory storage medium may store data that may change over time (e.g., in a random access memory (RAM) or a cache memory).

[0050] In an embodiment, processor 130 is configured to execute various instructions stored in memory 120 .

[0051] In an embodiment, the MT service management controller 140 is configured to determine ongoing services on 3GPP access on the first SIM 150 of the multi-SIM UE 100, and manage MT service information for the second SIM 160 of the multi-SIM UE 100 using N3GPP access based on the ongoing services of the first SIM 150 of the multi-SIM UE 100 on 3GPP access.

[0052] In an embodiment, the MT service management controller 140 is configured to manage the MT service information of the second SIM 160 using the N3GPP access. For example, the MT service management controller 140 is configured to receive a NOTIFICATION message from the AMF controller of the second SIM 160 through the N3GPP access to initiate the MT service on the second SIM 160 on the 3GPP access. The NOTIFICATION message includes information on the type of MT service of the second SIM 160 to be initiated on the 3GPP access. In addition, the MT service management controller 140 is configured to determine the priority of the type of MT service of the second SIM 160 to be initiated on the 3GPP access and the priority of the ongoing service on the first SIM 150 on the 3GPP access, and determine whether the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service on the first SIM 150. The service type is indicated using one of a mobile terminal (MT) cause and a paging cause.

[0053] Upon determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service on the first SIM 150 on the 3GPP access, the MT service management controller 140 is configured to trigger a service request or registration request for the second SIM 160 to the AMF controller on the 3GPP access and move to a connected mode on the second SIM 160. Upon determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is not higher than the priority of the ongoing service of the first SIM 150 on the 3GPP access, the MT service management controller 140 is configured to send a NOTIFICATION RESPONSE message to the AMF controller over the N3GPP access, the NOTIFICATION RESPONSE message indicating that the multi-SIM UE 100 does not intend to respond to the NOTIFICATION message for the second SIM 160. The second SIM 160 is in a connection management (CM)-CONNECTED state and a CM-IDLE state for N3GPP access, or in a radio reception control (RRC)_INACTIVE state for 3GPP access.

[0054] In another embodiment, the MT service management controller 140 is configured to manage the MT service information of the second SIM 160 using N3GPP access. For example, the MT service management controller 140 is configured to automatically send a NAS message with a paging filtering rule to the AMF controller of the second SIM 160 of the multi-SIM UE 100 through the N3GPP access. The paging filtering rule includes at least one of a rejection cause value, a timer value, a service list for which the multi-SIM UE 100 wishes to receive paging through 3GPP access, a service list for which the multi-SIM UE 100 wishes to receive notifications through non-N3GPP access, a paging cause and service list for which the multi-SIM UE 100 does not wish to receive paging through 3GPPA, and a paging cause and service list for which the multi-SIM UE 100 does not wish to receive notifications through N3GPPA. The paging filtering rule is determined based on an ongoing service on the first SIM 150 of the multi-SIM UE 100.

[0055] Only the dual SIM case is discussed, but the proposed method is also applicable to the multiple Universal Subscriber Identity Module (USIM) case.

[0056] although Figure 1The hardware elements of the multi-SIM UE 100 are shown, but it should be understood that other embodiments are not limited thereto. In other embodiments, the multi-SIM UE 100 may include fewer or more elements. In addition, the labels or names of the elements are only for illustrative purposes and do not limit the scope of the present invention. One or more components may be combined together to perform the same or substantially similar functions.

[0057] Figure 2A is a flow chart 200a illustrating a method for managing MT service information through N3GPP access in a wireless communication network according to embodiments disclosed herein.

[0058] Reference Figure 2A In step 202a, the multi-SIM UE 100 determines the ongoing services on the first SIM 150 of the multi-SIM UE 100 on the 3GPP access. Figure 1 In the illustrated multi-SIM UE 100, the MT service management controller 140 is configured to determine ongoing services on the first SIM 150 of the multi-SIM UE 100 over 3GPP access.

[0059] At step 204a, the multi-SIM UE 100 receives a NOTIFICATION message from the AMF controller of the second SIM 160 of the multi-SIM UE 100 via the N3GPP access, for initiating an MT service with respect to the second SIM 160 on the 3GPP access. Figure 1 In the illustrated multi-SIM UE 100 , the MT service management controller 140 is configured to receive a NOTIFICATION message from the AMF controller of the second SIM 160 of the multi-SIM UE 100 over the N3GPP access to initiate an MT service with respect to the second SIM 160 over the 3GPP access.

[0060] At step 206a, the multi-SIM UE 100 determines the priority of the service type to be initiated for the second SIM 160 on the 3GPP access, and the priority of the ongoing service for the first SIM 150 on the 3GPP access. Figure 1 In the illustrated multi-SIM UE 100 , the MT service management controller 140 is configured to prioritize the types of services to be initiated for the second SIM 160 over the 3GPP access, and the priorities of ongoing services for the first SIM 150 over the 3GPP access.

[0061] At step 208a, the multi-SIM UE 100 determines whether the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service for the first SIM 150. Figure 1 In the illustrated multi-SIM UE 100 , the MT service management controller 140 is configured to determine whether a pending service type for the second SIM 160 on the 3GPP access has a higher priority than an ongoing service with respect to the first SIM 150 .

[0062] At step 210a, upon determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service with respect to the first SIM 150, the multi-SIM UE 100 triggers a service request or registration request for the second SIM 160 to the AMF controller on the 3GPP access and moves to a connected mode with respect to the second SIM 160. For example, Figure 1 In the illustrated multi-SIM UE 100, the MT service management controller 140 is configured to trigger a service request or registration request for the second SIM 160 to the AMF controller on the 3GPP access and move to a connected mode with respect to the second SIM 160 upon determining that the priority of the pending service type for the second SIM 160 on the 3GPP access is higher than the priority of the ongoing service with respect to the first SIM 150.

[0063] In step 212a, upon determining that the priority of the service type pending for the second SIM 160 on the 3GPP access is not higher than the priority of the ongoing service for the first SIM 150, the multi-SIM UE 100 sends a NOTIFICATION RESPONSE message to the AMF controller over the N3GPP access, indicating that the multi-SIM UE 100 does not intend to respond to the NOTIFICATION message for the second SIM 160, e.g. Figure 1 In the multi-SIM UE 100 shown, the MT service management controller 140 is configured to send a NOTIFICATION RESPONSE message to the AMF controller via N3GPP access, indicating that the multi-SIM UE 100 does not intend to respond to the NOTIFICATION message for the second SIM 160, when it is determined that the priority of the service type pending for the second SIM 160 on the 3GPP access is not higher than the priority of the ongoing service regarding the first SIM 150.

[0064] The various actions, behaviors, blocks, steps, etc. in the method may be performed in the order presented, in a different order, or simultaneously. In addition, in some embodiments, some of the actions, behaviors, blocks, steps, etc. may be omitted, added, modified, skipped, etc. without departing from the scope of the present invention.

[0065] Figure 2B is another flow chart 200b illustrating a method for managing MT service information through N3GPP access in a wireless communication network according to embodiments disclosed herein.

[0066] Reference Figure 2B In step 202b, the multi-SIM UE 100 determines the services being performed by the multi-SIM UE 100 on the 3GPP access with respect to the first SIM 150. Figure 1 In the illustrated multi-SIM UE 100 , the MT service management controller 140 is configured to determine ongoing services of the multi-SIM UE 100 with respect to the first SIM 150 over the 3GPP access.

[0067] In step 204b, the multi-SIM UE 100 automatically sends a NAS message with paging filtering rules to the AMF controller of the second SIM 160 of the multi-SIM UE 100 via N3GPP access. Figure 1 In the illustrated multi-SIM UE 100 , the MT service management controller 140 is configured to automatically send a NAS message with paging filtering rules to the AMF controller of the second SIM 160 of the multi-SIM UE 100 via N3GPP access.

[0068] The various actions, behaviors, blocks, steps, etc. in the method may be performed in the order presented, in a different order, or simultaneously. In addition, in some embodiments, some of the actions, behaviors, blocks, steps, etc. may be omitted, added, modified, skipped, etc. without departing from the scope of the present invention.

[0069] Figure 3 is a signaling diagram illustrating a situation where resources are wasted when the Multi-SIM UE 100 is unaware of the pending service type for the second SIM 160 according to the prior art.

[0070] refer to Figure 3, consider a multi-SIM UE 100 (typically a multi-USIM UE) comprising a single receiver and a single transmitter, or comprising dual receivers and a single transmitter. At step 302, the multi-SIM UE 100 is in connected mode using service-1 on the first SIM 150. At step 306, the multi-SIM UE 100 receives a page for the second SIM 160 from the network, which indicates a pending service (service-2) waiting to be initiated on 3GPPA on the second SIM 160. A multi-SIM UE 100 with a single receiver and a single transmitter will not be able to receive the paging message. A multi-SIM UE 100 with two receivers and a single transmitter will be able to receive the paging message. At step 308, since the multi-SIM UE 100 is busy with the service on the first SIM 150, the multi-SIM UE 100 will not be able to respond to the paging message through 3GPP access. Mainly due to the hardware limitation of the single transmitter, the multi-SIM UE 100 cannot respond to paging for the second SIM 160 when the service is ongoing on the first SIM 150. However, since the second SIM network is unaware of the hardware limitation of the single transmitter of the multi-SIM UE 100 and the ongoing service, the second SIM network will continue to escalate the paging in a larger area, resulting in a waste of network resources.

[0071] Figure 4A is a signaling diagram illustrating a scenario of managing MT service information received from a second SIM network via N3GPPA using a Notification message (with MT cause) according to an embodiment of the present disclosure.

[0072] Reference Figure 4A , at step 404a, the multi-SIM UE (100) receives a notification message (with MT cause) via non-3GPP access (N3GPPA) or receives a paging message (with paging cause) via 3GPP access (3GPPA). At step 406a, the multi-SIM UE 100 determines that the current operation on the first SIM 150 has a higher priority than the MT service to be received (or initiated) on the second SIM 160, and then the multi-SIM UE 100 will respond to the network with a notification response message via N3GPPA, as shown in step 408a. If N3GPPA is in registered connected mode (in the case where N3GPPA is not in connected mode, once the multi-SIM UE 100 enters connected mode), the multi-SIM UE 100 may send a notification response message with the above parameters (or information), carrying one or all of the following information:

[0073] • The Multi-SIM UE 100 is not in the process of initiating a pending MT service or operation on 3GPPA.

[0074] A set of services for which the Multi-SIM UE 100 can receive notifications (over N3GPPA) or paging (over 3GPPA). That is, for these services the Multi-SIM UE 100 will initiate a service request and enter connected mode over 3GPPA.

[0075] • A timer indicating the duration that the Multi-SIM UE 100 is not ready to accept paging messages over 3GPPA or notification messages over N3GPPA for the indicated service.

[0076] • Indicate to the network that the Multi-SIM UE 100 is not interested in listening to any MT data / signalling until further notice. In this case, the Multi-SIM UE 100 is required to send a NAS message to the network indicating when MT data can be received again.

[0077] Figure 4B is a signaling diagram illustrating a scenario of managing MT service information received from a second SIM network via 3GPPA using a paging message according to an embodiment of the present disclosure.

[0078] Reference Figure 4B , at step 404b, the multi-SIM UE 100 receives a paging message (via 3GPP access) with a paging cause value (service type). In addition, at step 406b, the multi-SIM UE 100 checks the priority of the ongoing services in other SIMs, and based on the USIM configuration or user preference or both, if the multi-SIM UE 100 determines that the current paging is not prioritized compared to the services on other SIMs, the multi-SIM UE 100 will send a NAS message to the network via N3GPP access (step 408b). In the NAS message sent via N3GPP access, the multi-SIM UE 100 may include a rejection cause value, a timer value, and a list of services for which the multi-SIM UE 100 wishes to receive paging (via 3GPPA) or notification (via non-3GPP access) and / or a list of paging causes / services for which the multi-SIM UE 100 does not wish to receive paging (via 3GPPA) or notification (via non-3GPPA). As a result of the NAS message, the network will stop sending further paging (over 3GPP access) / notification messages (over non-3GPP access) to the Multi-SIM UE 100 for the given transaction (optionally until a provided timer expires).

[0079] Figure 5A is an example showing a notification (or NAS) message transmitted from the AMF to the multi-SIM UE 100 for managing MT service information through N3GPP access (Wifi access) according to the embodiments disclosed herein.

[0080] The same AMF of the 5G system will serve both 3GPP access and non-3GPP access in the same public land mobile network (PLMN). When the AMF receives downlink data for 3GPP access, when the N3GPPA CM state on the N3GPP access is 5GMM_REGISTERED and CM_CONNECTED (or other states) and the CM state on the 3GPPA is IDLE, a notification (or NAS) message from the AMF can be sent to the multi-SIM UE 100 through the N3GPP access (Wifi Access).

[0081] In addition, the notification message (or NAS message) may carry information to the multi-SIM UE 100 regarding traffic / data / signaling waiting to be delivered to the multi-SIM UE 100 over the 3GPP access. The information may be referred to as a paging cause, service class, service class ID, application service class ID, MT cause, etc. Typically, the information corresponds to a set / service set of NAS or radio reception control (RRC) messages having the same priority for the multi-SIM UE 100. With this information, the multi-SIM UE 100 understands that one of these service sets / NAS or RRC message sets is to be delivered to the multi-SIM UE 100 over the 3GPP access.

[0082] If the notification message comes from N3GPPA (Non-3GPP Access) of the operator of the first SIM 150, then depending on the current activity (or operation) on the second SIM 160, the Multi-SIM UE 100 may make one of the following decisions based on the MT cause received in the notification message:

[0083] · The 3GPP access by the first SIM 150 operator responds to the notification message with a service request message, in which case the multi-SIM UE 100 will suspend the 3GPP A part for operation or service on the second SIM 160, i.e. RF is not provided to the SIM-2 stack.

[0084] Ignore the notification message; or

[0085] • Due to the higher priority operation on the second SIM 160, the first SIM stack of the Multi-SIM UE 100 may respond to the operator of the first SIM 150 over N3GPPA indicating the reason why the service request cannot be started over 3GPPA, i.e. the Multi-SIM UE 100 is busy and it cannot handle the incoming service.

[0086] Upon receiving the notification message, if the received MT cause indicates that the MT service on the first SIM 150 operator has a higher priority than the second SIM 160 operation, or the second SIM 160 is in idle or detached mode, the multi-SIM UE 100 will respond to the notification message with a service request message via the 3GPP access of the first SIM 150 operator. In this case, the 3GPP access part of the service of the second SIM 160 is suspended. The suspension can be of two types, local indicating to the network, but it is limited to 3GPP access.

[0087] Upon receiving the notification message, if the current operation on the second SIM 160 has a higher priority than the pending operation on the first SIM 150, the multi-SIM UE 100 will not respond to the notification message.

[0088] Figure 5B is an example illustration according to the embodiments disclosed herein, where an N1 signaling connection over N3GPPA from the AMF to the multi-SIM UE 100 is used to manage MT service information.

[0089] Reference Figure 5B In this method, whenever a service related to the first SIM 150 is initiated, the multi-SIM UE 100 can indicate to the second SIM 160 operator through N3GPPA:

[0090] 1. Whether the multi-SIM UE 100 accepts MT paging, and the timer (optional)

[0091] 2. If the Multi-SIM UE 100 can accept paging or notifications (via N3GPPA), what type of services on SIM-2 the Multi-SIM UE 100 can accept, and timers (optional).

[0092] The proposed method is applicable to both cases when a MUSIM UE is registered to a single PLMN and to different PLMNs. The terms first SIM 150 / SIM-1 and second SIM 160 / SIM-2 represent the corresponding protocol stacks. In the proposed method, the terms notification, notification response are used. These names are only indicative and can be any NAS message or RRC message, but the concept remains the same. The proposed method is also applicable to MUSIM (multi-USIM, i.e. more than one USIM) UE. The multi-SIM UE 100 in this embodiment can only receive or send NAS messages when the multi-SIM UE (100) is in a registered state and CM connected.

[0093] Figure 6is a signaling diagram showing a case where the multi-SIM UE 100 automatically sends a NAS message with a paging filtering rule to the AMF controller of the second SIM 160 of the multi-SIM UE 100 through N3GPP access according to the embodiments disclosed herein.

[0094] Reference Figure 6 , in step 602, considering that the multi-SIM UE 100 wants to initiate a service or operation on one SIM, then in step 604, the multi-SIM UE 100 will send a NAS message over non-3GPPA to the network of the other SIM. In the NAS or message, the multi-SIM UE 100 may include a rejection cause value, a timer value and a list of services for which the UE wants to receive paging (over 3GPPA) or notification (over non-3GPP access) and / or a list of paging causes / services for which the multi-SIM UE 100 does not want to receive paging (over 3GPPA) or notification (over non-3GPPA). The multi-SIM UE 100 may also explicitly indicate that it does not wish to receive paging in all cases. Due to the NAS message, in step 606, the network will stop sending further PAGING (over 3GPPA) / NOTIFICATION (over N3GPPA) messages to the multi-SIM UE 100 (optionally until a provided timer expires). Consider that the Multi-SIM UE 100 has provided the network with a timer value indicating the duration for which the Multi-SIM UE 100 is not ready (optionally for a subset of services) to receive MT notifications (i.e. paging in 3GPPA or notification messages on N3GPPA). Now, if the Multi-SIM UE (100) wants to change the timer value or stop the timer on the network side, the UE will again send a NAS message (over 3GPP or non-3GPP access) to indicate the new timer value to the network or to stop the timer.

[0095] When the multi-SIM UE 100 receives a paging message with a paging cause (via 3GPPA) or a NOTIFICATION message with a MT cause (via N3GPPA) by the SIM-2 operator, the multi-SIM UE 100 may decide to suspend the ongoing service or 3GPPA portion of the operation on the SIM-1 network (which may be in connected mode) based on user consent, or based on the priority of the incoming service, or based on the multi-SIM UE 100 implementation. The multi-SIM UE 100 may indicate the above to the SIM-1 network for it. The SIM-1 network will then suspend the ongoing service and move the multi-SIM UE 100 to an IDLE or INACTIVE state. The terms such as MT cause or paging cause used in this embodiment indicate information provided to the multi-SIM UE 100 via one of 3GPPA and non-3GPP access regarding pending MT signaling or data on 3GPPA. The MT signaling or data may be one or more groups of service or NAS signaling messages waiting to be delivered to the UE via 3GPPA.

[0096] In this embodiment, the terms paging cause, MT cause or service may be information in the form of an ID or APN / DNN (i.e., PDU session ID), QCI, 5QI, packet filter, slice ID, NSSAI, S-NSSAI that may represent services of the same priority or signaling messages of the same priority.

[0097] The message names used in this embodiment are simply those indicating one of a NAS message and an RRC message.

[0098] In this embodiment, whenever it indicates that a timer value is provided to the network, in the same case, if no timer value is provided to the network, the network may consider it to be a zero value and the network may page or send a notification to the Multi-SIM UE 100 again after a network implementation dependent time.

[0099] In this embodiment, when the Multi-SIM UE 100 indicates to the network a set of services for which the Multi-SIM UE 100 does not wish to be paged or notified, then the network is allowed to page or notify the Multi-SIM UE 100 for other services.

[0100] In this embodiment, when the UE indicates to the network the set of services for which the Multi-SIM UE 100 wishes to be paged or notified, then the network should not page or notify the Multi-SIM UE 100 for other services.

[0101] In this embodiment, when the Multi-SIM UE 100 indicates to the network the service set for which it wants to be paged, the Multi-SIM UE 100 may also indicate to the network that the Multi-SIM UE 100 does not want to be paged or informed of any MT signaling or data.

[0102] In this embodiment, the terms operation, service, service set refer to data packets of a protocol data unit (PDU) session (eg, which may be represented by a service), or may refer to a signaling message.

[0103] In this embodiment, the terms operation, service, service set refer to downlink data packets of a PDU session (eg, which may be represented by a service), or may refer to a signaling message, or it may be any process (or action) performed by the multi-SIM UE 100 .

[0104] In this embodiment, the explanation considers 5G as an example, but the proposed method is applicable to 4G technology with appropriate changes.

[0105] In this embodiment, the network sends an indication (or information) to the multi-SIM UE 100 via non-3GPP access. The information indicates the type of signaling or data to be delivered to the multi-SIM UE 100 via 3GPP access. Based on the information, the multi-SIM UE (100) performs any of the following:

[0106] 1. The multi-SIM UE 100 suspends the 3GPPA part of other SIM operations or services in progress based on user consent or UE configuration or USIM configuration. The suspension can be local in the multi-SIM UE 100 (without notifying the network), or as discussed in this embodiment, the multi-SIM UE 100 can use NAS messages or AS messages to indicate to the network whose operations are suspended. In addition, the multi-SIM UE 100 sends a service request message (or any NAS message) over 3GPPA of the network providing instructions (or information) through N3GPPA.

[0107] 2. The Multi-SIM UE (100) decides to ignore the received incoming message.

[0108] 3. The Multi-SIM UE (100) may respond to a network sending a message via N3GPPA using either 3GPPA (eg, using an earlier data transfer mechanism defined in 3GPP) or N3GPPA (the Multi-SIM UE 100 does not wish to react to messages over 3GPPA).

[0109] Further additional information may be provided, indicating the duration for which the multi-SIM UE 100 does not wish to react on 3GPPA, a list of services for which the multi-SIM UE 100 does not wish to react on 3GPPA, a list of services for which the multi-SIM UE 100 wishes to react on 3GPPA. The additional information may also indicate to the network that the multi-SIM UE 100 does not wish to be paged or notified for all incoming data or signaling on 3GPPA, in which case the multi-SIM UE 100 will have to indicate to the network when it is ready to accept incoming data or signaling on 3GPPA. The network operates according to the information received. The network will only send the indication to the UE again if the UE has indicated that it will react via 3GPPA or only for services for which the multi-SIM UE 100 has indicated that it will react via 3GPPA, or the network will wait to send the information to the multi-SIM UE 100 again until the timer of the provided multi-SIM UE 100 expires, or any combination of the above 3 points. The term react over 3GPPA means that the UE will respond to an incoming notification or paging message over 3GPPA using a NAS message.

[0110] In this embodiment, the network sends an indication (or information) to the multi-SIM UE 100 via 3GPP access. The information indicates the type of signaling or data to be delivered to the multi-SIM UE 100 via 3GPP access. Based on the information, the multi-SIM UE 100 performs any of the following:

[0111] 1. The multi-SIM UE 100 suspends the 3GPPA part of other ongoing SIM operations or services based on user consent or UE configuration or USIM configuration. The suspension can be local in the multi-SIM UE 100 (without notifying the network), or as discussed in this embodiment, it can use a NAS message or an AS message (same parameters as point 3 below) to indicate to the network whose operation is suspended.

[0112] 2. The Multi-SIM UE 100 decides to ignore the received incoming message.

[0113] 3. The Multi-SIM UE 100 may respond to the network sending information on N3GPPA using 3GPPA (e.g. using an early data transfer mechanism defined in 3GPP) or N3GPPA (the Multi-SIM UE 100 does not wish to react to the information on 3GPPA). Further additional information may be provided indicating the duration for which the Multi-SIM UE 100 does not wish to react on 3GPPA, a list of services for which the Multi-SIM UE 100 does not wish to react on 3GPPA, a list of services for which the Multi-SIM UE 100 does wish to react on 3GPPA. The additional information may also indicate to the network that the Multi-SIM UE 100 does not wish to be paged or notified for all incoming data or signaling on 3GPPA, in which case the Multi-SIM UE 100 will have to indicate to the network when it is ready to accept incoming data or signaling on 3GPPA. The network acts according to the information received. The network will only send the indication to the UE again if the UE has indicated that it will react via 3GPPA or only for services for which the multi-SIM UE 100 has indicated that it will react via 3GPPA, or the network will wait to send the information to the multi-SIM UE 100 again until a provided timer expires.

[0114] In this embodiment, when it comes to the multi-SIM UE 100 will indicate and initiate to the network the service sets it can accept, then those service sets have higher or equal priority than ongoing services on other USIMs.

[0115] In this embodiment, the other SIMs are one or more SIMs other than the network's SIM about which the paging or notification message is received.

[0116] The operator or network of the USIM or SIM is the PLMN on which the corresponding USIM information is used to obtain registration with the network. That is, it is a general term used to indicate the normal MUSIM situation, for example a dual SIM UE can be registered with two operators, one with SIM1 and the other with SIM2. The respective registered networks are denoted as SIM1-network and SIM-2-network.

[0117] In this embodiment, the term "suspend" may be interpreted as taking the RF away from the particular stack being suspended.

[0118] Figure 7 is a signaling diagram illustrating a case where an active data connection in a multi-SIM UE 100 is suspended by a wireless communication network according to embodiments disclosed herein.

[0119] Reference Figure 7, at step 704, consider that the multi-SIM UE 100 receives a paging message with a paging cause (through 3GPPA) or a NOTIFICATION message with a MT cause (through N3GPPA).

[0120] In step 706, the multi-SIM UE 100 decides to terminate the 3GPPA portion of the ongoing service on the SIM-1 network in the connected mode based on user consent or based on the priority of the incoming service or based on the UE implementation. The multi-SIM UE 100 can indicate the same to the SIM-1 network using a NAS message via N3GPPA (as shown in step 708). Then, the SIM-1 network will suspend the ongoing service on 3GPPA and move the multi-SIM UE 100 to an idle or inactive state. The network will not page or send a NOTIFICATION message to the UE again until the time given by the UE for the service list provided by the UE. The network will release the signaling connection and move the UE to an idle state or an inactive state. (Step 710). In addition, in step 712, when there is incoming data, the SIM-1 network does not page / notify the multi-SIM UE 100 (as shown in step 714), and in step 716, provides a rejection message (the rejection message has a reason, a timer) to the requesting node; or stores the received data.

[0121] In this embodiment, it is discussed that the AMF sends a NOTIFICATION message with MT cause to the multi-SIM UE 100 through N3GPP access. In the following cases, the AMF may decide to send a NOTIFICATION message to the multi-SIM UE 100 through N3GPP access:

[0122] A. If the Multi-SIM UE 100 has indicated to the network using NAS or AS messages that the Multi-SIM UE 100 will not respond to paging messages over 3GPPA (optionally for a subset of services). That is, the UE is in a suspended state over 3GPPA (optionally only for specific services).

[0123] If the AMF knows that the UE is a MUSIM UE (or more precisely, the UE is 1Rx / Tx or 2Rx / Tx), and therefore the AMF knows that the UE may not be able to respond to paging on 3GPPA. The AMF identifies that the UE is a MUSIM UE based on the information provided by the UE in the NAS / AS message or the network storing the subscription information, etc.

[0124] In this embodiment, the multi-SIM UE 100 may indicate to the AMF in a NAS message or an AS message (such as a registration request or a service request message) that the notification message is mandatory to be sent via N3GPPA, because the multi-SIM UE 100 will not be able to respond to paging on 3GPPA. If the AMF accepts the request, the AMF may indicate back to the multi-SIM UE 100 in a NAS message or an AS message (such as a registration acceptance or a service acceptance). With the acceptance indication from the AMF, the multi-SIM UE 100 will stop monitoring the paging channel on 3GPPA to receive mobile terminal (MT) services, and the multi-SIM UE 100 will expect to receive all pending MT service notifications via N3GPPA instead of the paging procedure on 3GPPA. When the multi-SIM UE 100 indicates to the network that the currently ongoing service on 3GPPA is suspended and the network is required to release resources, i.e., RRC and NAS signaling connections (or move the UE to an inactive state), the network may also implicitly understand that the multi-SIM UE 100 instructs the AMF to mandatory send notifications via N3GPPA. In the NAS message, the multi-SIM UE 100 may indicate that the multi-SIM UE 100 does not wish to receive paging (optionally for a service set and a specific duration). In this case, the multi-SIM UE 100 will also stop monitoring the paging messages of the MT service.

[0125] Figure 8 is a block diagram illustrating a base station according to an exemplary embodiment of the present disclosure.

[0126] refer to Figure 8 , the base station 800 may include a processor 810, a transceiver 820, and a memory 830. However, all the components shown are not required. The base station 800 may be composed of more or less than Figure 8 Furthermore, according to another embodiment, the processor 810, the transceiver 820, and the memory 830 may be implemented as a single chip.

[0127] The above-mentioned components will now be described in detail.

[0128] The processor 810 may include one or more processors or other processing devices that control the proposed functions, processes and / or methods. The operations of the base station 800 may be implemented by the processor 810.

[0129] The transceiver 820 may include an RF transmitter for up-converting and amplifying a transmission signal, and an RF receiver for down-converting a reception signal. However, according to another embodiment, the transceiver 820 may be implemented by more or less components than those illustrated in the components.

[0130] The transceiver 820 may be connected to the processor 810 and transmit and / or receive signals. The signal may include control information and data. In addition, the transceiver 820 may receive a signal through a wireless channel and output the signal to the processor 810. The transceiver 820 may transmit a signal output from the processor 810 through a wireless channel.

[0131] The memory 830 may store control information or data included in a signal obtained by the base station 800. The memory 830 may be connected to the processor 810 and store at least one instruction or protocol or parameter for the proposed function, process and / or method. The memory 830 may include a read-only memory (ROM) and / or a random access memory (RAM) and / or a hard disk and / or a CD-ROM and / or a DVD and / or other storage devices.

[0132] Fig. 9 A user equipment (UE) according to an embodiment of the present disclosure is shown.

[0133] The above-mentioned multi-SIM UE 100 may correspond to the UE 900 .

[0134] refer to Fig. 9 UE 900 may include a processor 910, a transceiver 920, and a memory 930. However, all the components shown are not required. UE 900 may include: Fig. 9 The components shown may be implemented with more or fewer components. In addition, according to another embodiment, the processor 910 and the transceiver 920 and the memory 930 may be implemented as a single chip.

[0135] The above-mentioned components will now be described in detail.

[0136] The processor 910 may include one or more processors or other processing devices that control the proposed functions, processes and / or methods. The operations of the UE 900 may be implemented by the processor 910.

[0137] The transceiver 920 may include an RF transmitter for up-converting and amplifying a transmission signal, and an RF receiver for down-converting a reception signal. However, according to another embodiment, the transceiver 920 may be implemented by more or less components than those shown in the components.

[0138] The transceiver 920 may be connected to the processor 910 and transmit and / or receive signals. The signal may include control information and data. In addition, the transceiver 920 may receive a signal through a wireless channel and output the signal to the processor 910. The transceiver 920 may transmit a signal output from the processor 910 through a wireless channel.

[0139] The memory 930 may store control information or data included in a signal obtained by the UE 900. The memory 930 may be connected to the processor 910 and store at least one instruction or protocol or parameter for the proposed function, process and / or method. The memory 930 may include a read-only memory (ROM) and / or a random access memory (RAM) and / or a hard disk and / or a CD-ROM and / or a DVD and / or other storage devices.

[0140] Fig.10 A core network entity according to an embodiment of the present disclosure is schematically illustrated.

[0141] The above-mentioned AMF may correspond to the core network entity 1000.

[0142] Reference Fig.10 , the core network entity 1000 may include a processor 1010, a transceiver 1020, and a memory 1030. However, all the components shown are not required. The core network entity 1000 may be composed of Fig.10 The components shown may be implemented with more or fewer components. In addition, according to another embodiment, the processor 1010, the transceiver 1020, and the memory 1030 may be implemented as a single chip.

[0143] The above-mentioned components will now be described in detail.

[0144] The transceiver 1020 may provide an interface for performing communication with other devices in the network. That is, the transceiver 1020 may convert a bit stream sent from the core network entity 1000 to other devices into a physical signal, and convert a physical signal received from other devices into a bit stream. That is, the transceiver 1020 may send and receive signals. The transceiver 1020 may be referred to as a modem, a transmitter, a receiver, a communication unit, and a communication module. The transceiver 1020 may enable the core network entity 1000 to communicate with other devices or systems via a backhaul connection or other connection methods.

[0145] The memory 1030 may store basic programs, applications, and configuration information for the operation of the core network entity 1000. The memory 1030 may include a volatile memory, a nonvolatile memory, and a combination of a volatile memory and a nonvolatile memory. The memory 1030 may provide data according to a request from the processor 1010.

[0146] The processor 1010 may control the overall operation of the core network entity 1000. For example, the processor 1010 may send and receive signals through the transceiver 1020. The processor 1010 may include at least one processor. The processor 1010 may control the core network entity 1000 to perform operations according to an embodiment of the present disclosure.

[0147] The embodiments disclosed herein may be implemented by at least one software program running on at least one hardware device and performing network management functions to control elements. The elements include blocks, elements, actions, behaviors, steps, etc., which may be at least one of a hardware device or a combination of a hardware device and a software module.

[0148] The foregoing description of the specific embodiments will so completely reveal the general nature of the embodiments herein that others can easily modify and / or adapt to various applications by applying current knowledge, without departing from the general concept, and therefore, such adaptations and modifications should and are intended to be included in the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the words or terms used herein are for descriptive purposes rather than for limiting purposes. Therefore, although the embodiments herein have been described according to preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced by modification within the spirit and scope of the embodiments described herein.

Claims

1. A method performed by a user equipment UE in a wireless communication system, the method comprising: receiving a notification message from the access and mobility management function, AMF, indicating a 3GPP access over a non-3rd Generation Partnership Project 3GPP access; identifying that the UE is capable of supporting multiple universal subscriber identity modules MUSIM and that the UE is unable to initiate a service request procedure on the 3GPP access in response to the notification message; as well as Sending a notification response message to the AMF on the non-3GPP access, indicating that the UE cannot initiate the service request process.

2. The method according to claim 1, wherein: The UE cannot initiate the service request procedure due to UE implementation constraints.

3. The method according to claim 1, wherein: The initiation of the service request procedure is associated with the sending of a service request message to the AMF.

4. The method according to claim 1, wherein: The service request procedure is associated with mobile terminated MT services.

5. The method according to claim 1, further comprising: It is identified that a service request procedure on the 3GPP access is in progress.

6. A method performed by an access and mobility management function (AMF) in a wireless communication system, the method comprising: Sending a notification message indicating 3GPP access to a user equipment UE on a non-3rd Generation Partnership Project 3GPP access; as well as In a case where the UE is capable of supporting multiple universal subscriber identity modules MUSIM and the UE is unable to initiate a service request procedure on the 3GPP access in response to the notification message, a notification response message is received from the UE on the non-3GPP access indicating that the UE is unable to initiate the service request procedure.

7. The method according to claim 6, wherein: The UE cannot initiate the service request procedure due to UE implementation constraints.

8. The method according to claim 6, wherein: The initiation of the service request procedure is associated with the reception of a service request message from the UE.

9. The method according to claim 6, wherein: The service request procedure is associated with mobile terminated MT services.

10. The method according to claim 6, wherein: A service request procedure is ongoing on the 3GPP.

11. A user equipment UE in a wireless communication system, the UE comprising: At least one processor configured to: receiving a notification message from the access and mobility management function, AMF, indicating a 3GPP access over a non-3rd Generation Partnership Project 3GPP access; identifying that the UE is capable of supporting multiple universal subscriber identity modules MUSIM and that the UE is unable to initiate a service request procedure on the 3GPP access in response to the notification message, and Sending a notification response message to the AMF on the non-3GPP access, indicating that the UE cannot initiate the service request process.

12. The UE according to claim 11, wherein: The UE cannot initiate the service request procedure due to UE implementation constraints.

13. The UE according to claim 11, wherein: The initiation of the service request procedure is associated with the sending of a service request message to the AMF.

14. The UE according to claim 11, wherein: The at least one processor is further configured to identify that a service request procedure on the 3GPP access is ongoing.

15. The UE according to claim 11, wherein: The service request procedure is associated with mobile terminated MT services.

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