KR20210088383A - Apparatus and method for supporting ims related service in wireless communication system - Google Patents

Abstract

The present disclosure relates to a 5^th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than a 4^th generation (4G) communication system such as long term evaluation (LTE). According to various embodiments of the present disclosure, a method of operating a terminal in a wireless communication system includes the following steps of: transmitting a registration request message to a network node; and receiving a registration acceptance message including information about whether a non-voice over packet system (VoPS) service using an internet protocol multimedia subsystem (IMS) is supported, from the network node.

Description

Apparatus and method for supporting IMS-related services in a wireless communication system {APPARATUS AND METHOD FOR SUPPORTING IMS RELATED SERVICE IN WIRELESS COMMUNICATION SYSTEM}

The present disclosure generally relates to a wireless communication system, and more particularly, to an apparatus and method for supporting an Internet protocol multimedia subsystem (IMS) related service in a wireless communication system.

4G (4 ^th generation) to meet the traffic demand in the radio data communication system increases since the commercialization trend, efforts to develop improved 5G (5 ^th generation) communication system, or pre-5G communication system have been made. For this reason, the 5G communication system or the pre-5G communication system is called a 4G network after (Beyond 4G Network) communication system or an LTE (Long Term Evolution) system after (Post LTE) system.

In order to achieve high data rates, 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (eg, 60 gigabytes (60 GHz) bands). In order to alleviate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, in the 5G communication system, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, for network improvement of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network (ultra-dense network) , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and reception interference cancellation Technology development is underway.

In addition, in the 5G system, Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation (FQAM) and Sliding Window Superposition Coding (SWSC), which are advanced coding modulation (Advanced Coding Modulation, ACM) methods, and Filter Bank Multi Carrier (FBMC), an advanced access technology, ), Non Orthogonal Multiple Access (NOMA), and Sparse Code Multiple Access (SCMA) are being developed.

Based on the above discussion, the present disclosure (disclosure) provides an apparatus and method for supporting an Internet protocol multimedia subsystem (IMS) related service in a wireless communication system.

According to various embodiments of the present disclosure, a method of operating a terminal in a wireless communication system is provided. The method includes a process of transmitting a registration request message to a network node, and registration including information on whether a non-voice over packet system (non-VoPS) service using an Internet protocol multimedia subsystem (IMS) is supported from the network node and receiving an acceptance message.

According to various embodiments of the present disclosure, a terminal is provided in a wireless communication system. The terminal includes a transceiver and at least one processor functionally connected to the transceiver, wherein the at least one processor transmits a registration request message to a network node, and uses an Internet protocol multimedia subsystem (IMS) from the network node. (non-voice over packet system) is configured to receive a registration acceptance message including information on whether the service is supported.

The apparatus and method according to various embodiments of the present disclosure may provide an apparatus and method for supporting an Internet protocol multimedia subsystem (IMS) related service in a wireless communication system.

Effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the description below. will be.

1 illustrates a structure of a wireless communication system according to various embodiments of the present disclosure.
2 illustrates a structure of a wireless communication system according to various embodiments of the present disclosure.
3 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.
4 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.
5 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.
6 illustrates a configuration of a terminal in a wireless communication system according to various embodiments of the present disclosure.
7 illustrates a configuration of a network entity in a wireless communication system according to various embodiments of the present disclosure.
8 is a flowchart illustrating a method of operating a terminal according to various embodiments of the present disclosure.

Terms used in the present disclosure are used only to describe specific embodiments, and may not be intended to limit the scope of other embodiments. The singular expression may include the plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art described in the present disclosure. Among the terms used in the present disclosure, terms defined in a general dictionary may be interpreted with the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in the present disclosure, ideal or excessively formal meanings is not interpreted as In some cases, even terms defined in the present disclosure cannot be construed to exclude embodiments of the present disclosure.

In various embodiments of the present disclosure described below, a hardware approach method will be described as an example. However, since various embodiments of the present disclosure include technology using both hardware and software, various embodiments of the present disclosure do not exclude a software-based approach.

Terms that refer to signals, terms that refer to channels, terms that refer to control information, terms that refer to network entities, and terms that refer to components of devices used in the following description are for convenience of description. it is exemplified Accordingly, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used.

In addition, although this disclosure describes various embodiments using terms used in some communication standards (eg, 3rd Generation Partnership Project (3GPP)), this is only an example for description. Various embodiments of the present disclosure may be easily modified and applied in other communication systems.

Hereinafter, the present disclosure relates to an apparatus and method for supporting an Internet protocol multimedia subsystem (IMS) related service in a wireless communication system.

The present disclosure provides a non-voice over packet system (non-VoPS) service using IMS in a wireless communication system, for example, short message service (SMS), file transfer, and presence service. service) relates to an apparatus and method for providing a service, such as. More specifically, this disclosure 5G (5 ^th generation) SMS, a file transfer under a communication environment, such as the communication system (file transfer), a presence service (presence service) and a non-same-as the voice service (non-voice service), IMS ( A method and apparatus for providing a non-VoPS IMS (non-VoPS IMS) service provided by using an IP multimedia subsystem).

5G (5 ^th generation) or NR (new radio) system, was isolated in the SMF (session management function) entity for managing a management entity of AMF (access and mobility management function) for managing the mobility of the terminal and the session. ^{Accordingly, 4G LTE (4 th generation long} term evolution) , as opposed was performed with the mobility management and session management (mobility management entity) MME in a communication system, 5G or NR system, the entity that performs mobility management and session management is separated, and the communication method and communication management method between the terminal and the network entity are changed.

In the 5G or NR system, for non-3GPP access, mobility management is performed through AMF through N3IWF (non-3GPP inter-working function), and session management through SMF. management) is performed. In addition, security-related information, which is an important element in mobility management, is also processed through the AMF.

As described above, in the 4G LTE system, the MME is in charge of both mobility management and session management. In the 5G or NR system, a non-standalone architecture (NSA) for performing communication by using the network entity of the 4G LTE system together may be supported.

In various embodiments of the present disclosure, non-VoPS (non-voice over packet system, non-VoPS) services provided through IMS under 5G environment, for example, SMS, file transfer, presence service (presence service) services can be provided.

1 illustrates a structure of a wireless communication system according to various embodiments of the present disclosure.

Specifically, FIG. 1 illustrates a structure of a terminal and a network environment for communication with improved communication performance in a 5G network according to various embodiments of the present disclosure.

1, 5G or NR core network (core network) is UPF (user plane function, 131), SMF (session management function, 121), AMF (access and mobility management function, 111), 5G RAN (5G radio) The access network 103 may be configured with a network function (NF), such as a user data management (UDM), a policy control function (PCF, 161), and the like. In addition, for authentication of these entities, entities such as authentication server function (AUSF, 141), authentication, authorization and accounting (AAA), and the like may be included. A user equipment (UE, terminal, 101) may access a 5G core network through a 5G radio access network (5G RAN, base station, BS, 103).

On the other hand, an N3 interworking function (N3IWF) exists for the case where the UE 101 communicates through a non-3GPP access (non-3GPP access), and the UE 101 communicates with the UE 101 through a non-3GPP access (non-3GPP access). In the case of communication, session management is controlled through the UE 101, non-3GPP access, N3IWF, and SMF, and mobility management is UE 101, non -Controlled through -3GPP access (non-3GPP access), N3IWF, and AMF.

In the 5G or NR system, entities performing mobility management and session management are separated into an AMF 111 and an SMF 121 . On the other hand, in the 5G or NR system, a standalone deployment structure that communicates only with 5G or NR entities and a non-standalone deployment structure that uses 4G entities and 5G or NR entities together are being considered. .

Although the communication network on which various embodiments of the present disclosure are based assumes a network of 5G and 4G LTE, it can be applied if the same concept is applied to other systems within a range that can be understood by a person of ordinary skill in the art.

2 illustrates a structure of a wireless communication system according to various embodiments of the present disclosure.

Specifically, FIG. 2 illustrates a structure of a terminal and a network environment for providing a non-VoPS (non-VoPS) service using IMS in a 5G network according to various embodiments of the present disclosure.

The embodiment of FIG. 2 may be applied to a roaming environment. That is, in the embodiment of FIG. 2, in a roaming environment, network entities in a home public land mobile network (HPLMN) and a visited public land mobile network (VPLMN) use IMS-related services, that is, among services using IMS. The operation of the terminal may be supported depending on whether a non-voice over PS (non-VoPS) service can be provided.

3 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.

Specifically, FIG. 3 illustrates a process for providing a non-VoPS (non-VoPS) service using IMS in a 5G network environment according to various embodiments of the present disclosure. The non-VoPS service using IMS according to the embodiment of FIG. 3 includes services such as SMS, file transfer, and presence service.

Referring to FIG. 3 , in step 301 , the UE 310 transmits a registration request message to the AMF 320 .

In step 303 , the AMF 320 transmits a registration accept message to the UE 310 .

At this time, the network (network), or the AMF 320 indicates whether the network can provide a non-VoPS (non-VoPS) service using the IMS to the UE 310 IMS for non-VoPS (IMS non-VoPS) informs the UE (310) information.

Because, in the case of a rich communication suite (RCS), that is, in the case of an IMS service that is a non-voice service, for example, in the case of an SMS, a presence service, and a file transfer, , since IMS registration is used, it is necessary to inform the UE 310 of information to enable IMS registration even in the case of such a service.

The following [Table 1] shows the configuration of a registration accept message according to various embodiments of the present disclosure.

[Table 1]

Referring to [Table 1], among at least one IE (information element) constituting the registration accept message, the network is configured by using the 5GS network feature support information element (IE). It may indicate whether a non-VoPS service using IMS is supported.

The following [Table 2] shows the configuration of 5GS network feature support information IE (5GS network feature support IE) that informs whether a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure is supported. indicates.

[Table 2]

Alternatively, as shown in [Table 3], a separate IE (information element) is created to determine whether non-VoPS (non-VoPS) service using IMS is supported, and information of the corresponding IE is included in the registration accept message. By transmitting from the AMF 320 to the UE 310, the UE 310 may be informed of the capability of whether to support a non-VoPS (non-VoPS) service using the IMS of the network.

The following [Table 3] shows the configuration of an information element (IE) indicating whether a non-VoPS (non-VoPS) service using IMS is supported (IMS for non-VoPS support) according to various embodiments of the present disclosure. indicates.

[Table 3]

Coding and interpretation of IE (information element) for whether or not to support non-VoPS (non-VoPS) service using IMS of [Table 3] are as follows [Table 4].

The following [Table 4] shows the coding configuration of the IE for whether to support a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure (IMS for non-VoPS support).

[Table 4]

The configuration of the registration accept message including the IE (information element) for whether to support the non-VoPS (non-VoPS) service using the IMS (IMS for non-VoPS support) is as follows [Table 5] same as

The following [Table 5] shows a registration accept including an IE for whether to support a non-VoPS service using IMS according to various embodiments of the present disclosure (IMS for non-VoPS support) ) indicates the composition of the message.

[Table 5]

The operation of the network with respect to whether the non-VoPS (non-VoPS) service using IMS is supported (IMS for non-VoPS support) is as follows.

According to one embodiment, the network (network) determines whether a special function (feature) to the UE, for example, a non-voice service using IMS (IMS non-voice service) is possible on a PS session (PS session) 5GS network It is notified through a feature support IE (5GS network feature support information element).

Or, according to another embodiment, the network (network) to the UE a special function (feature), for example, a non-voice service using IMS (IMS non-voice service) is possible on the PS session (PS session) It notifies through an IMS for non VoPS support information element (IE) whether or not a non-VoPS service using IMS is supported.

To summarize the above, the operation of the network is shown in [Table 6] or [Table 7] below.

The following [Table 6] shows the configuration of network operations according to various embodiments of the present disclosure.

[Table 6]

Referring to [Table 6], the network informs the UE about support of specific functions, such as whether IMS non-voice service is available through PS session in 5GS network feature support IE (5GS network feature support IE).

The following [Table 7] shows the configuration of network operation according to various embodiments of the present disclosure.

[Table 7]

Referring to [Table 7], the network (network) determines whether IMS non-voice service is available through PS session through IE (IMS for non VoPS support information element) on whether or not to support non-VoPS service using IMS. Notifies the UE about support of specific functions, such as

The UE is capable of the following operations.

(One) 3GPP access (3GPP access) or non-3GPP access (non-3GPP access) on non-voice IMS service (non-voice IMS service), for example, SMS, file transfer (file transfer), presence service (presence service) When such is possible, a data centric UE in a 5G mobility management-registered state (5GMM-REGISTERED state) generates a PDU session for IMS signaling. To do this, it receives a request message from the upper layer.

(2) In the UE with the ability to support IMS non-voice service on the PS session (PS session), the indicator supporting the IMS non-voice service (IMS non-voice service) on the PS session (PS session) (indicator) must be provided to the upper layer (upper layer).

(3) In addition, in selecting an access domain for a non-voice service session, the upper layer is an IMS non-voice service indicator through the PS session (IMS non voice service over). PS session indicator) should be kept in mind.

To summarize the above, the operation of the UE is shown in Table 8 below.

The following [Table 8] shows the configuration of UE operation according to various embodiments of the present disclosure.

[Table 8]

Referring to [Table 8], if a non-voice IMS service, for example, SMS, file transfer, presence service, can be used through a 3GPP connection or a non-3GPP connection, a "data-centric" UE in a 5GMM-REGISTERED state will receive a request to establish a PDU session for IMS signaling from a higher layer. In a UE with IMS non-voice service capability over PS session, an IMS non-voice service indicator over PS session will be provided to a higher layer. When selecting the access area for the non-voice service session, the upper layer considers the IMS non-voice service indicator through the PS session.

According to another embodiment of Figure 3, it may be possible to change the configuration operation of the UE and the network (network) as follows. The network may operate as shown in [Table 6-2] instead of the operation of [Table 6] described above.

[Table 6-2]

Referring to [Table 6-2], the network (network) is a special feature to the UE, for example, IMS voice service over PS session or IMS non-voice through PS session. It can inform that the service (IMS non-voice service over PS session) is supported using 5GS network feature support IE (5GS network feature support IE).

Alternatively, the network may operate as shown in [Table 6-3] instead of the above-described [Table 6].

[Table 6-3]

Referring to [Table 6-3], the network (network) is a special function to the UE to support an IMS voice service or a non-voice IMS service over PS session through a PS session. (feature), for example, that it supports IMS voice over PS session through a PS session may be informed using a 5GS network feature support IE (5GS network feature support IE).

The UE may operate as shown in [Table 8-2] instead of the operation of [Table 8] described above.

[Table 8-2]

Referring to [Table 8-2], when an IMS voice service can be used through a 3GPP connection or a non-3GPP connection, or through a 3GPP connection or a non-3GPP connection, non- If the voice IMS service is available, a "voice centric" or "data centric" UE in 5GMM-REGISTERED state will receive a request from a higher layer to establish a PDU session for IMS signaling.

Alternatively, the UE may operate as shown in [Table 8-3] instead of the operation of [Table 8] described above.

[Table 8-3]

Referring to [Table 8-3], the IMS indicator through the PS session must be provided to the upper layer from the UE having the IMS service capability through the PS session.

The upper layer should consider the IMS indicator through the PS session when selecting an access domain for a session or service.

Alternatively, the UE may operate as shown in [Table 8-4] instead of the operation of [Table 8] described above.

[Table 8-4]

Referring to [Table 8-4], the IMS indicator through the PS session must be provided to the upper layer from the UE having the IMS voice service capability through the PS session.

The upper layer should consider the IMS indicator through the PS session when selecting an access domain for a session or service.

In the registration accept message of [Table 1], information on whether the network for IMS for non VoPS (IMS for non-VoPS) is supported is separately provided from the network to the UE 310. It can be delivered by using the components in the 5GS network feature support information IE (5GS network feature support IE) of [Table 2] without using parameters.

Specifically, referring to [Table 2], IMS (IMS-VoPS-N3GPP) bit for VoPS in 5GS network feature support IE (5GS network feature support IE) bit, that is, VoPS (voice) over packet system) using a bit indicating whether the non-3GPP (non-3GPP) system supports the IMS for the non-VoPS (IMS for non-VoPS) of the network. Information on whether or not to support can be conveyed.

Or, referring to [Table 2], a bit expressing IMS (IMS-VoPS-3GPP) for VoPS in 3GPP in 5GS network feature support IE (5GS network feature support IE), that is, VoPS (voice) over packet system) using a bit indicating whether the 3GPP system supports IMS for non-VoPS to deliver information on whether or not the network supports IMS for non-VoPS (IMS for non-VoPS) can

Therefore, the IMS (IMS-VoPS-N3GPP) bit for VoPS in non-3GPP may indicate that an IMS over packet system can be supported on a non-3GPP (non-3GPP) system, In 3GPP, the IMS (IMS-VoPS-3GPP) bit for VoPS may indicate that an IMS over packet system can be supported on the 3GPP system.

In order to support the IMS (IMS-VoPS-N3GPP) bit for VoPS in non-3GPP or the IMS (IMS-VoPS-3GPP) bit for VoPS in 3GPP, instead of the above [Table 2], the following [Table 2-2] ] as shown in the 5GS network feature support information IE (5GS network feature support IE) can be configured.

The following [Table 2-2] shows the configuration of 5GS network feature support information IE (5GS network feature support IE).

[Table 2-2]

Alternatively, by describing the conditions as shown in [Table 2-3] below, IMS over packet system is not only voice service but also SMSoIP, file transfer, presence, etc. -Voice (non-voice) service can also be supported.

The following [Table 2-3] shows the conditions for IMS (IMS over packet system) through the packet system.

[Table 2-3]

Referring to [Table 2-3], the condition that the IMS service is not available (IMS not available) is one of the following situations.

a) If the UE does not support IMS service (eg, IMS voice, SMSoIP (SMS over IP network, SMS over IMS), file transfer, or presence service);

b) If the UE supports IMS service, but the network does not support IMS service over PS session in the registration accept message, or,

c) the UE supports the IMS service, and the network indicates that the network supports the IMS service over PS session through the PS session in the registration accept message,

1) the upper layer does not provide an indication that the UE is capable of voice calls, presence services, file transfers, or SMS services using IMS, within the time determined by the manufacturer, or

2) Or, if the upper layer (upper layer) indicates (indicate), the UE indicates that voice call, presence service, file transfer, or SMS using IMS is not possible

Alternatively, the following [Table 2-4] shows conditions for IMS (IMS over packet system) through the packet system.

[Table 2-4]

Referring to [Table 2-4], the condition that the IMS service is not available (IMS not available) is one of the following situations.

Whether the IMS voice service is available is indicated using an information element (IE) for IMS voice support. However, whether the IMS voice service displayed in the IE (information element) for the IMS voice service support (IMS voice support) is available (available) actually uses IMS as well as the IMS voice service. It means whether or not the service is available inclusively.

a) UE supports IMS voice or IMS non-voice service (eg, SMSoIP (SMS over IP network, SMS over IMS), file transfer, or presence service) If not,

b) UE supports IMS voice service (IMS voice) or IMS non-voice service (IMS non voice service), but the network (network) through the PS session in the registration accept message (IMS voice over PS session) ) or when it is said that it does not support IMS non-voice service over PS session through PS session, or

c) the UE supports IMS voice service or IMS non-voice service, and the network sends a registration accept message to the IMS voice service (IMS) through the PS session Voice service over PS session) or IMS non-voice over PS session through PS session was indicated to support,

1) the upper layer (upper layer) within the time determined by the manufacturer, the UE is capable of voice call, IMS non-voice service, for example, presence service, file transfer, or SMS service using IMS (indication) if not provided; or

2) Or, if the upper layer (upper layer) indicates (indicate), the UE indicates that a voice call, or a non-voice IMS service, for example, a presence service, file transfer, or SMSIMS using IMS is not possible.

4 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.

Specifically, FIG. 4 illustrates a process for providing a non-VoPS (non-VoPS) service using IMS in a 5G network environment according to various embodiments of the present disclosure. The non-VoPS service using IMS according to the embodiment of FIG. 4 includes services such as SMS, file transfer, and presence service.

Referring to FIG. 4 , in step 401 , the UE 410 transmits a registration request message to the AMF 420 .

In this case, the UE 410 may transmit information on whether the UE 410 itself supports an SMS over IMS (SMS) service through IMS to a network.

According to an embodiment, the UE 410 may transmit a registration request message including a 5GS update type IE to the network as shown in Table 9 below.

Also, according to another embodiment, the UE 410 registers a registration request including an SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transport requested information element) as shown in Table 10 below. A (registration request) message may be transmitted to a network.

The following [Table 9] shows the configuration of a registration request message according to various embodiments of the present disclosure.

[Table 9]

Referring to [Table 9], the registration request message includes a 5GS update type IE (5GS update type IE).

The following [Table 10] shows the configuration of a registration request message according to various embodiments of the present disclosure.

[Table 10]

Referring to [Table 10], the registration request message includes an SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transport requested information element) through IMS.

The following [Table 11] and [Table 12] provide SMS (SMS over IMS) information through IMS to inform that SMS (SMS over IMS) through IMS is possible. 5GS update type IE (5GS update type IE) or IMS This is a method to transmit and interpret the SMS transmission request using IE (SMS over IMS (SMSoIP: SMS over IP networks) transport requested information element).

The following [Table 11] shows the configuration of 5GS update type IE (5GS update type IE) as an SMS over IMS (SMS) information delivery method through IMS according to various embodiments of the present disclosure.

[Table 11]

The following [Table 12] shows the coding configuration of the IE for the SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transport requested information element) according to various embodiments of the present disclosure.

[Table 12]

Alternatively, according to another embodiment, in order to inform that the UE has IMS capability to the network so that a service using IMS is possible, IMS capability information 5GS update type IE (5GS update) It is possible to interpret the IMS capability information in the 5GS update type IE (5GS update type IE) sent using the type IE) and received by the network.

IMS capability information includes whether the UE supports SMS using IMS (SMSoIP: SMS using IP network), whether the UE supports non-voice IMS services (eg, presence service, SMS using IMS, file transfer). etc.) is supported.

The following [Table 12-2] shows the configuration of 5GS update type IE (5GS update type IE) for delivering IMS capability (IMS capability) information.

[Table 12-2]

The following [Table 12-3] shows the coding configuration for the IMS capability (IMS capability) information of [Table 12-2].

[Table 12-3]

[Table 12-2] IMS capability (IMS capability) information is included in 5GS update type IE (5GS update type IE) to be transmitted from the UE to the network through the registration request message of [Table 9] described above. can

Or, according to another embodiment, in order to inform that the UE has IMS capability to the network so that a service using IMS is possible, IMS capability information is provided to the UE's usage setting IE (UE's usage) setting IE), and the network (network) can interpret IMS capability (IMS capability) information in the received UE's usage setting IE (UE's usage setting IE).

IMS capability (IMS capability) information includes whether or not SMS using IMS (SMSoIP: SMS using IP network) is supported, and whether the UE supports non-voice IMS services (eg, presence service, SMS using IMS, file transfer, etc.) Indicate whether or not it supports

The following [Table 12-4] shows the configuration of the UE's usage setting IE (UE's usage setting IE) for delivering IMS capability (IMS capability) information.

[Table 12-4]

The following [Table 12-5] shows the coding configuration for the IMS capability (IMS capability) information of [Table 12-4].

[Table 12-5]

IMS capability (IMS capability) information of [Table 12-4] is included in the UE's usage setting IE (UE's usage setting IE) and transmitted from the UE to the network through the registration request message of [Table 9] can be

The following [Table 13] and [Table 14] show SMS over IMS (SMSoIP: SMS over IP networks) transported requested information element through IMS to inform that SMS over IMS is possible. ) is created separately, and an SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transported requested IE) is transmitted and interpreted.

The following [Table 13] shows the configuration of an SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transported requested information element) according to various embodiments of the present disclosure.

[Table 13]

The following [Table 14] shows a coding configuration for an SMS transmission request IE (SMS over IMS (SMSoIP: SMS over IP networks) transported requested information element) through IMS according to various embodiments of the present disclosure.

[Table 14]

Referring to FIG. 4 , in step 403 , the AMF 420 transmits a registration accept message to the UE 410 .

At this time, the network (network), or AMF 420 indicates whether the network can provide a non-VoPS (non-VoPS) service using IMS to the UE 410 IMS for non-VoPS (IMS for non-VoPS) informs the UE (410) information.

Because, in the case of a rich communication suite (RCS), that is, in the case of an IMS service that is a non-voice service, for example, in the case of an SMS, a presence service, and a file transfer, , since IMS registration is used, it is necessary to inform the UE 410 of information to enable IMS registration even in the case of such a service.

The following [Table 15] shows the configuration of a registration accept message according to various embodiments of the present disclosure.

[Table 15]

Referring to [Table 15], among at least one IE (information element) constituting the registration accept message, the network using the 5GS network feature support information element (IE) is It may indicate whether a non-VoPS service using IMS is supported.

The following [Table 16] shows the configuration of 5GS network feature support information IE (5GS network feature support IE) that informs whether a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure is supported. indicates.

[Table 16]

Alternatively, as shown in the following [Table 17], a separate IE (information element) is created to determine whether a non-VoPS service using IMS is supported, and the information of the corresponding IE is included in the registration accept message. Including, by transmitting from the AMF 420 to the UE 410, it is possible to inform the UE 410 of the capability of whether to support a non-VoPS (non-VoPS) service using the IMS of the network. .

The following [Table 17] shows the configuration of an information element (IE) that informs whether a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure is supported (IMS for non-VoPS support). indicates.

[Table 17]

Coding and interpretation of the IE (information element) for whether or not to support the non-VoPS (non-VoPS) service using the IMS of [Table 17] are as follows [Table 18].

The following [Table 18] shows the coding configuration of the IE for whether to support a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure (IMS for non-VoPS support).

[Table 18]

The configuration of the registration accept message including the IE (information element) for whether to support the non-VoPS (non-VoPS) service using the IMS (IMS for non-VoPS support) is as follows [Table 19] same as

The following [Table 19] shows registration accept including IE for non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure (IMS for non-VoPS support) ) indicates the composition of the message.

[Table 19]

5 illustrates a process for providing a non-VoPS IMS service in a wireless communication system according to various embodiments of the present disclosure.

Specifically, FIG. 5 illustrates a process for providing a non-VoPS (non-VoPS) service using IMS in a 5G network environment according to various embodiments of the present disclosure. In particular, the embodiment of FIG. 5 describes a process for providing a non-VoPS service using IMS in a roaming environment like the embodiment of FIG. 2 . Non-VoPS (non-VoPS) services using IMS include services such as SMS, file transfer, and presence service.

Referring to FIG. 5 , in step 501 , the UE 510 transmits a registration request message to the AMF 520 .

In step 503 , the AMF 520 transmits a registration accept message to the UE 510 .

At this time, the network (network), or the AMF 520 indicates whether the network can provide a non-VoPS (non-VoPS) service using IMS to the UE 510 IMS for non-VoPS In addition to (IMS for non-VoPS) information, IMS for non-VoPS in roaming (IMS) information is informed to the UE 510 in roaming.

Because, in the case of a rich communication suite (RCS), that is, in the case of an IMS service that is a non-voice service, for example, in the case of an SMS, a presence service, and a file transfer, , since IMS registration is used, it is necessary to inform the UE 510 of information to enable IMS registration even in the case of such a service.

The following [Table 20] shows the configuration of a registration accept message according to various embodiments of the present disclosure.

[Table 20]

Referring to [Table 20], a registration accept message includes a 5GS network feature support information element (IE).

Referring to the following [Table 21], whether the network (network) supports a non-VoPS (non-VoPS) service using IMS using 5GS network feature support information element (IE), roaming In a (roaming) situation, it may indicate whether a network supports a non-VoPS service using IMS.

The following [Table 21] is 5GS indicating that non-VoPS IMS (non-VoPS IMS) related services according to various embodiments of the present disclosure support IMS for non VoPS in roaming in roaming It represents the configuration of the network function support information IE (5GS network feature support information element).

[Table 21]

Or, as shown in Table 22, whether the network supports a non-VoPS (non-VoPS) service using IMS, a non-VoPS (non-VoPS) using IMS in a roaming situation By creating a separate IE (information element) for whether or not to support the VoPS) service and transmitting the information of the IE in the registration accept message from the AMF 520 to the UE 510, the network Whether to support a non-VoPS (non-VoPS) service using IMS, and whether the network supports a non-VoPS (non-VoPS) service using IMS in a roaming situation (capability) may inform the UE 510 .

The following [Table 22] shows whether a non-VoPS (non-VoPS) service using IMS according to various embodiments of the present disclosure is supported, and a non-VoPS (network) using IMS in a roaming situation ( Indicates the configuration of an IE (information element) indicating whether a non-VoPS) service is supported.

[Table 22]

Whether to support non-VoPS (non-VoPS) service using IMS of [Table 22], and whether the network supports non-VoPS (non-VoPS) service using IMS in roaming situations Coding and interpretation of the IE (information element) for the IE are as follows [Table 23] and Table [24].

The following [Table 23] shows the coding configuration of the IE for whether to support a non-VoPS (non-VoPS) service using IMS (IMS for non-VoPS support) according to various embodiments of the present disclosure.

[Table 23]

The following [Table 24] shows whether a network supports a non-VoPS (non-VoPS) service using IMS in a roaming situation according to various embodiments of the present disclosure (IMS for non-VoPS in roaming) Support) indicates the coding configuration of IE.

[Table 24]

Whether to support non-VoPS (non-VoPS) service using IMS (IMS for non-VoPS support), in roaming situations, the network supports non-VoPS (non-VoPS) service using IMS The configuration of a registration accept message including an information element (IE) for IMS for non-VoPS in roaming support is shown in Table 25 below.

The following [Table 25] shows an IE for whether to support a non-VoPS service using IMS according to various embodiments of the present disclosure (IMS for non-VoPS support), a network in a roaming situation (network) indicates the configuration of a registration accept message including an IE for whether or not to support a non-VoPS (non-VoPS) service using IMS (IMS for non-VoPS in roaming support).

[Table 25]

6 illustrates a configuration of a terminal in a wireless communication system according to various embodiments of the present disclosure.

Referring to FIG. 6 , a user equipment (UE) 600 according to various embodiments of the present disclosure may include a transceiver 610 , a memory 620 , and a processor 630 . According to the communication method of the terminal 600 described above, the processor 630 , the transceiver 610 , and the memory 620 of the terminal 600 may operate. However, the components of the terminal 600 are not limited to the above-described example. For example, the terminal 600 may include more or fewer components than the aforementioned components. In addition, the processor 630 , the transceiver 610 , and the memory 620 may be implemented in the form of a single chip.

The transceiver 610 is a generic term for the receiver of the terminal 600 and the transmitter of the terminal 600 , and may transmit/receive a signal to and from a base station or a network entity. A signal transmitted and received with the base station may include control information and data. To this end, the transceiver 610 may include an RF transmitter that up-converts and amplifies a frequency of a transmitted signal, and an RF receiver that low-noise amplifies and down-converts a received signal. However, this is only an embodiment of the transceiver 610 , and components of the transceiver 610 are not limited to the RF transmitter and the RF receiver. The transceiver 610 may include at least one transceiver or at least one transceiver. In addition, the transceiver 610 may include a wired/wireless transceiver, and may include various configurations for transmitting and receiving signals. In addition, the transceiver 610 may receive a signal through a wireless channel and output it to the processor 630 , and transmit the signal output from the processor 630 through a wireless channel. In addition, the transceiver 610 may receive a communication signal and output it to the processor, and transmit the signal output from the processor to a network entity through a wired/wireless network.

The memory 620 may store programs and data necessary for the operation of the terminal 600 . Also, the memory 620 may store control information or data included in a signal obtained from the terminal 600 . The memory 620 may be configured as a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD.

The processor 630 may control a series of processes so that the terminal 600 may operate according to the above-described embodiment of the present disclosure. The processor 630 may include at least one or more processors. For example, the processor 630 may include a communication processor (CP) that controls for communication and an application processor (AP) that controls an upper layer such as an application program.

7 illustrates a configuration of a network entity in a wireless communication system according to various embodiments of the present disclosure.

Referring to FIG. 7 , a network entity 700 according to various embodiments of the present disclosure may include a transceiver 710 , a memory 720 , and a processor 730 . According to the above-described communication method of the network entity 700 , the processor 730 , the transceiver 710 , and the memory 720 of the network entity 700 may operate. However, the components of the network entity 700 are not limited to the above-described example. For example, the network entity 700 may include more or fewer components than the aforementioned components. In addition, the processor 730 , the transceiver 710 , and the memory 720 may be implemented in the form of a single chip. The network entity 700, the aforementioned access and mobility management function (AMF), session management function (SMF), policy and charging function (PCF), network exposure function (NEF), unified data management (UDM), user It may include a network function (network function, NF) such as a plane function. In addition, it may include a base station (base station).

The transmitter/receiver 710 collectively refers to a receiver of the network entity 700 and a transmitter of the network entity 700 , and may transmit/receive a signal to/from a terminal or other network entity. In this case, the transmitted/received signal may include control information and data. To this end, the transceiver 710 may include an RF transmitter for up-converting and amplifying the frequency of a transmitted signal, and an RF receiver for low-noise amplifying a received signal and down-converting the frequency. However, this is only an embodiment of the transceiver 710 and components of the transceiver 710 are not limited to the RF transmitter and the RF receiver. The transceiver 610 may include at least one transceiver or at least one transceiver. The transceiver 710 may include a wired/wireless transceiver, and may include various components for transmitting and receiving signals. In addition, the transceiver 710 may receive a signal through a communication channel (eg, a wireless channel) and output it to the processor 730 , and transmit the signal output from the processor 730 through the communication channel. In addition, the transceiver 710 may receive a communication signal and output it to the processor 730 , and transmit the signal output from the processor 730 to a terminal or a network entity through a wired/wireless network.

The memory 720 may store programs and data necessary for the operation of the network entity 700 . Also, the memory 720 may store control information or data included in a signal obtained from the network entity 700 . The memory 720 may be configured as a storage medium or a combination of storage media, such as ROM, RAM, hard disk, CD-ROM, and DVD.

The processor 730 may control a series of processes so that the network entity 700 may operate according to the above-described embodiment of the present disclosure. The processor 730 may include at least one or more processors. Methods according to the embodiments described in the claims or specifications of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium are configured to be executable by one or more processors in an electronic device (device). One or more programs include instructions for causing an electronic device to execute methods according to embodiments described in a claim or specification of the present disclosure.

8 is a flowchart illustrating a method of operating a terminal according to various embodiments of the present disclosure.

Referring to FIG. 8 , in step 801 , a user equipment (UE) transmits a registration request message to a network node. According to various embodiments of the present disclosure, the network node may include an access and mobility management function (AMF). This registration request message may inform whether the terminal has the ability to support a non-VoPS service, for example, an SMS over IMS (SMS over IP networks) service.

In step 803, the terminal receives a registration accept message from the network node. According to various embodiments of the present disclosure, the registration acceptance message may include information on whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported. According to various embodiments of the present disclosure, the registration acceptance message may include information on whether a non-voice over packet system (non-VoPS) service using an Internet protocol multimedia subsystem (IMS) is supported in a roaming situation.

According to various embodiments of the present disclosure, information on whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported, or an internet protocol multimedia subsystem (IMS) using an internet protocol multimedia subsystem (IMS) in a roaming situation Information on whether non-VoPS (non-voice over packet system) service is supported is displayed through 5GS network feature support information element (IE).

According to various embodiments of the present disclosure, information on whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported, or an internet protocol multimedia subsystem (IMS) using an internet protocol multimedia subsystem (IMS) in a roaming situation Information on whether a non-voice over packet system (non-VoPS) service is supported is a separate IE (information on whether a non-voice over packet system) service is supported using an internet protocol multimedia subsystem (IMS). element) or a separate IE (information element) indicating whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported in a roaming situation.

Methods according to the embodiments described in the claims or specifications of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium are configured to be executable by one or more processors in an electronic device (device). One or more programs include instructions for causing an electronic device to execute methods according to embodiments described in a claim or specification of the present disclosure.

Such programs (software modules, software) include random access memory, non-volatile memory including flash memory, read only memory (ROM), electrically erasable programmable ROM (electrically erasable programmable read only memory, EEPROM), magnetic disc storage device, compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other It may be stored in an optical storage device or a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all thereof. In addition, each configuration memory may be included in plurality.

In addition, the program is transmitted through a communication network consisting of a communication network such as the Internet, intranet, local area network (LAN), wide area network (WAN), or storage area network (SAN), or a combination thereof It may be stored on an attachable storage device that can be accessed. Such a storage device may be connected to a device implementing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may be connected to the device implementing the embodiment of the present disclosure.

In the specific embodiments of the present disclosure described above, components included in the disclosure are expressed in the singular or plural according to the specific embodiments presented. However, the singular or plural expression is appropriately selected for the context presented for convenience of description, and the present disclosure is not limited to the singular or plural element, and even if the element is expressed in plural, it is composed of the singular or singular. Even an expressed component may be composed of a plurality of components.

Meanwhile, although specific embodiments have been described in the detailed description of the present disclosure, various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments and should be defined by the claims described below as well as the claims and equivalents.

Claims (2)

A method of operating a terminal in a wireless communication system, the method comprising:
The process of sending a registration request message to a network node;
Receiving a registration acceptance message including information on whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported from the network node;
Way.
In a terminal in a wireless communication system,
transceiver; and
at least one processor operatively coupled to the transceiver;
the at least one processor,
sending a registration request message to the network node;
configured to receive a registration acceptance message including information on whether a non-voice over packet system (non-VoPS) service using an internet protocol multimedia subsystem (IMS) is supported from the network node,
terminal.

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