KR20230015082A - Base station and data processing control method performed by the base station, terminal device - Google Patents

Abstract

The present invention provides a method (technology) that can significantly shorten call connection time for providing a call service when the call service is received through new call processing technology realization which can recognize reception of the call service at an early point and omit a procedure unrelated to actual call service provision.

Description

Base station device and call processing control method performed by the device, terminal device

The present invention relates to a call processing technology for an incoming call service, and more particularly, to a technology capable of significantly reducing a call connection time for providing a call service upon an incoming call service.

Currently, service commercialization is difficult with only NR (New Radio, 5G) standards, and the initial NR investment cost is too high and it is impossible to provide NR independent commercial services. Throughput), instead of providing LTE (E-UTRA), many operators are expected to use a dual connectivity method that links the existing commercialized E-UTRA technology and NR technology, considering the fact that the wireless coverage is narrower than that of LTE (E-UTRA).

Accordingly, in Dual Connectivity, which links E-UTRA technology and NR technology, Non-Standalone (NSA) technology that uses communication services based on mutual interworking between different types of LTE (E-UTRA) and 5G (NR) access networks is used. can be used

The Dual Connectivity method defines data transmission paths differently according to NSA options, such as Option 3, 4, and 7, and in all options, signaling is performed through the Master Node (MN), and the MN and secondary node (Secondary Node) , SN), a control channel is set up to exchange signaling with each other.

For example, in Option 3 of EN-DC (E-UTRA NR Dual Connectivity), the MN is an eNB, the SN is a gNB, the MN (eNB) interworks with the MME in the core network through signaling, and NE-DC (NR E-UTRA Dual Connectivity) In Option 4 of , the MN is a gNB, the SN is an eNB, and the MN (gNB) communicates signaling with the AMF in the core network.

On the other hand, when a 5G terminal supporting NSA (hereinafter referred to as NSA UE) accesses the network, it performs a call processing procedure through the MN to access the primary network and additionally access the SN, thereby operating in a dual connectivity state.

Meanwhile, in the case of a call service (eg, voice call), unlike a data service, promptness of service initiation is very important.

To briefly explain the call connection procedure of a call service (eg, voice call), when a base station delivers paging according to an incoming call service (eg, voice call) received from a core node to a terminal, the wireless section of the terminal The radio section setup process (RRC Conn. Setup/Complete) between the terminal and the base station according to the connection request (RRC Connection Request) is performed, and the context setup process (Initial Context After the Setup Request/Response is completed, a base station-based connection between the terminal and the core node (eg, a bearer when the base station is an eNB and a session when the base station is a gNB) is established.

Then, in the step of setting the application quality of service (eg, QCI 1, 5Q1 1) of the call service (eg, voice call) by the core node, the base station may recognize that the call is received according to the call service (eg, voice call). From this point on, signaling for actually providing a call service (eg, voice call) to the terminal is performed.

At this time, the signaling for actually providing a call service (eg, voice call) to the terminal may vary depending on the scenario of providing the call service. For example, EPS that starts a call service (eg, voice call) using LTE in 5G In the case of fallback, it means signaling that releases the 5G base station (gNB)-based session connection, accesses the radio section between the terminal and LTE, and connects the eNB-based bearer (eg, QCI 1).

As such, according to the current standard, the base station (eNB / gNB) is not provided with information that can recognize that it is a call service (eg, voice call) in the process of delivering paging to the called terminal, and at a considerably late point (call Service quality (eg QCI 1, 5Q1 1) is recognized as a call service (eg voice call) only at the setting stage) of the service (eg voice call). A procedure unrelated to service (eg, voice call) provision (eg, gNB-based session connection in case of EPS Fallback) is performed.

Of course, in other scenarios of providing call services (eg, NSA VoLTE, VoNR, etc.), as in the case of EPS Fallback, the actual call service (eg, voice call) is provided prior to the recognition of the call service (eg, voice call). one procedure will be performed.

Due to this, according to the current standard, since the point at which the base station recognizes that a call service (eg, voice call) is incoming is late, a procedure unrelated to the provision of actual call service (eg, voice call) is performed before this recognition point. Due to limitations, such as signaling, the time point of recognizing a call service (eg, voice call) is further delayed, and the like, a problem in which a call connection time for providing a call service is delayed is caused.

Therefore, in the present invention, it is proposed to solve the problem of delay in call connection time for providing a call service when a call service is received and to significantly reduce the call connection time.

The present invention was created in view of the above circumstances, and an object to be solved in the present invention is to realize a method capable of significantly shortening a call connection time for providing a call service when a call service is received.

In order to achieve the above object, a base station apparatus according to a first aspect of the present invention includes a service classification unit for classifying a service received in the terminal in a radio section setup process with the terminal; and in the case of a predefined specific service as a result of the service classification, unrelated to the provision of the specific service during a call processing process performed according to a predefined procedure after setting up the wireless section to provide the specific incoming service to the terminal. It includes a call processing control unit that controls call processing so that some procedures are skipped.

Specifically, the service classification unit may classify the service in a radio section setup process with the terminal based on service identification information in a paging message transmitted to the terminal.

Specifically, the service identification information may be defined as information that is classified based on a node or server that triggers the paging and is added to a Service Type field in the paging message.

Specifically, the service classification unit may classify the service based on the service identification information-based identifier included in the radio section setup request message received from the terminal that has received the paging message.

Specifically, the service classification unit, when receiving a radio section setup request message from a terminal that has received the paging message, can classify the service based on the service identification information stored by mapping with the terminal when the paging message is transmitted. .

Specifically, in some of the procedures, when the specific service is a call service and the terminal is in an EPS fallback operating situation in which the terminal moves from the access network supported by the base station apparatus to the LTE access network, radio section configuration between the terminal and the base station apparatus It may include at least one of a signaling procedure between the terminal and the base station device for the base station device and a signaling procedure between the base station device and the core node for the base station device-based session connection of the terminal.

Specifically, the call processing control unit responds with a context setup failure to the context setup request received from the core node during the call processing process, so that the signaling procedure of the base station apparatus-based session connection by the core node may be undisclosed.

Specifically, in some of the above procedures, the specific service is a call service, and the terminal uses another base station of an access network different from the supported access network of the base station device or another base station of the supported access network or another frequency band of the base station device. In the case of an operation situation of additional access to a cell, a measurement report signaling procedure for an additional access target of the terminal, a signaling procedure between the base station apparatus and the other base station for additional access between the terminal and the other base station, and the other base station of the terminal It may include at least one of a signaling procedure between the base station apparatus and the terminal for frequency band cell additional access.

Specifically, the call processing control unit performs an additional connection target and measurement report to the terminal in the radio section setting message when transmitting a radio section setting message for setting a radio section between the terminal and the base station during the call processing process. By excluding the information to do so, the measurement report signaling procedure by the terminal may not be performed.

To achieve the above object, a terminal device according to a second aspect of the present invention includes a classification information checking unit for checking service classification information for distinguishing an incoming service from a paging message received through a base station; and during a radio section setup process with the base station according to the paging message, an identifier based on the service identification information is transmitted to the base station, so that the base station receives the incoming service based on the identifier in a predetermined specific When it is confirmed as a service, among the call processing procedures performed according to the predefined procedures for providing the specific incoming service to the terminal device, the call processing can be controlled so that some procedures unrelated to the specific service provision are omitted It includes an identifier transfer unit.

Specifically, the service identification information may be defined as information that is classified based on a node or server that triggers the paging and is added to a Service Type field in the paging message.

A call processing control method performed in a base station apparatus according to a third aspect of the present invention for achieving the above object includes a service classification step of classifying a service received by the terminal in a radio section setup process with a terminal; and in the case of a predefined specific service as a result of the service classification, unrelated to the provision of the specific service during a call processing process performed according to a predefined procedure after setting up the wireless section to provide the specific incoming service to the terminal. and a call processing control step of controlling call processing so that some procedures are omitted.

Specifically, in the service classification step, the service can be distinguished during a radio section setup process with the terminal based on service identification information in a paging message transmitted to the terminal.

Specifically, the service identification information may be defined as information that is classified based on a node or server that triggers the paging and is added to a Service Type field in the paging message.

Specifically, in some of the procedures, when the specific service is a call service and the terminal is in an EPS fallback operating situation in which the terminal moves from the access network supported by the base station apparatus to the LTE access network, radio section configuration between the terminal and the base station apparatus It may include at least one of a signaling procedure between the terminal and the base station device for the base station device and a signaling procedure between the base station device and the core node for the base station device-based session connection of the terminal.

Specifically, in some of the above procedures, the specific service is a call service, and the terminal uses another base station of an access network different from the supported access network of the base station device or another base station of the supported access network or another frequency band of the base station device. In the case of an operation situation of additional access to a cell, a measurement report signaling procedure for an additional access target of the terminal, a signaling procedure between the base station apparatus and the other base station for additional access between the terminal and the other base station, and the other base station of the terminal It may include at least one of signaling procedures between the base station apparatus and the terminal for frequency band cell additional access.

Therefore, according to the base station apparatus and the call processing control method performed in the apparatus of the present invention, a method capable of recognizing (distinguishing) an incoming call service at an early point in time and a method that is performed regardless of the provision of a call service when a call service is received A new incoming call processing control method (technology) that solves the call connection delay for providing call service is being realized by omitting unnecessary signaling procedures.

For this reason, according to the present invention, by recognizing the incoming call service at an early point in time and omitting a procedure unrelated to the actual call service provision, the call connection delay for providing the call service is solved, and the call service is provided when the call service is received. The effect of significantly shortening the call connection time for

1 is a flowchart illustrating a call connection procedure of a call service (eg, voice call) according to an existing technology and a point in time when a base station recognizes a call service.
2 is a block diagram showing the configuration of a base station device according to an embodiment of the present invention.
3 is an exemplary table showing criteria for classifying service types according to an embodiment of the present invention.
4 is a flowchart showing the operational flow of a call processing control method according to an embodiment of the present invention.
5 to 7 are flow charts for each call service provision scenario showing a call connection procedure of a call service (eg, voice call) and a point in time when a base station recognizes a call service according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to a technology capable of significantly reducing call connection time for providing a call service when a call service is received.

Currently, service commercialization is difficult with only NR (New Radio, 5G) standards, and the initial NR investment cost is too high and it is impossible to provide NR independent commercial services. Throughput), instead of providing LTE (E-UTRA), many operators are expected to use a dual connectivity method that links the existing commercialized E-UTRA technology and NR technology, considering the fact that the wireless coverage is narrower than that of LTE (E-UTRA).

Accordingly, in Dual Connectivity, which links E-UTRA technology and NR technology, Non-Standalone (NSA) technology that uses communication services based on mutual interworking between different types of LTE (E-UTRA) and 5G (NR) access networks is used. can be used

The Dual Connectivity method defines data transmission paths differently according to NSA options, such as Option 3, 4, and 7, and in all options, signaling is performed through the Master Node (MN), and the MN and secondary node (Secondary Node) , SN), a control channel is set up to exchange signaling with each other.

For example, in Option 3 of EN-DC (E-UTRA NR Dual Connectivity), the MN is an eNB, the SN is a gNB, the MN (eNB) interworks with the MME in the core network through signaling, and NE-DC (NR E-UTRA Dual Connectivity) In Option 4 of , the MN is a gNB, the SN is an eNB, and the MN (gNB) communicates signaling with the AMF in the core network.

On the other hand, when a 5G terminal supporting NSA (hereinafter referred to as NSA UE) accesses the network, it performs a call processing procedure through the MN to access the primary network and additionally access the SN, thereby operating in a dual connectivity state.

Meanwhile, in the case of a call service (eg, voice call), unlike a data service, promptness of service initiation is very important.

Hereinafter, with reference to FIG. 1, a call connection procedure of a call service (eg, voice call) will be briefly described.

1 illustrates, as an example, a scenario in which a call service (eg, voice call) is provided using LTE in 5G to start EPS Fallback.

As shown in FIG. 1, when the gNB transfers paging according to the call service (eg, voice call) received from the core node (AMF) to the terminal (UE), the UE's radio section access request (RRC Connection Request), radio section setup process (RRC Conn. Setup/Complete) between UE and gNB is performed, and context setup process (Initial Context Setup Request/Response) through radio section setup between UE and gNB (RRC Connection Reconfiguration/Complete) ) is completed, a gNB-based session (Session) is connected between the UE and the core node (UPF).

Then, in the QoS (5Q1 1) setting step of applying the call service (eg voice call) according to the PDU Session Resource Modify Request by the core node (AMF), the gNB determines that the incoming call is assigned to the call service (eg voice call). (EPS-FB/VoNR determination according to the operating state of the UE), and from this point on, signaling for actually providing a call service (eg, voice call) to the UE is performed.

Since FIG. 1 shows a scenario for providing EPS-FB, signaling for providing an actual call service (eg, voice call) to a terminal includes signaling for releasing a gNB-based session connection (UE Context Release Request/Command/Complete), After this signaling, it may mean signaling for radio-interface access between the UE and LTE and eNB-based bearer connection (eg, QCI 1).

As such, according to the current standard, the base station (eNB / gNB) is not provided with information that can recognize that it is a call service (eg, voice call) in the process of delivering paging to the called terminal, and at a considerably late point (call Service quality (eg QCI 1, 5Q1 1) is recognized as a call service (eg voice call) only at the setting stage) of the service (eg voice call). A procedure unrelated to service (e.g., voice call) provision (e.g., gNB-based session connection in case of EPS Fallback) is performed, and furthermore, signaling to release the gNB-based session due to this procedure must be additionally performed unnecessarily. .

Of course, in other scenarios of providing call services (eg, NSA VoLTE, VoNR, etc.), as in the case of EPS Fallback, the actual call service (eg, voice call) is provided prior to the recognition of the call service (eg, voice call). one procedure will be performed.

Due to this, according to the current standard, since the point at which the base station recognizes that a call service (eg, voice call) is incoming is late, a procedure unrelated to the provision of actual call service (eg, voice call) is performed before this recognition point. Due to limitations, such as signaling, the time point of recognizing a call service (eg, voice call) is further delayed, and the like, a problem in which a call connection time for providing a call service is delayed is caused.

Therefore, in the present invention, it is proposed to solve the problem of delay in call connection time for providing a call service when a call service is received and to significantly reduce the call connection time.

Hereinafter, with reference to FIG. 2, configurations of a base station apparatus and a terminal apparatus realizing the method proposed in the present invention will be described in detail.

First, as shown in FIG. 2 , the base station apparatus 100 according to an embodiment of the present invention may include a service classification unit 110 and a call processing control unit 120 .

All or at least part of the configuration of the base station apparatus 100 of the present invention may be implemented in the form of a hardware module or a software module, or may be implemented in a combination of a hardware module and a software module.

Here, the software module may be understood as, for example, a command executed by a processor that controls operation in the base station device 100, and such a command may have a form loaded in a memory in the base station device 100. .

As a result, the base station apparatus 100 according to an embodiment of the present invention solves the problem of call connection time delay for providing a call service when a call service is received, that is, a new method proposed by the present invention through the above configuration, and calls are connected. A method capable of significantly reducing time is realized, and hereinafter, each configuration in the base station apparatus 100 for realizing this will be described in more detail.

Prior to the description, the base station apparatus 100 of the present invention is a base station supporting Non-Standalone technology, and a base station corresponding to an MN from the terminal (10, UE) point of view (eg, Option 3 eNB, Option 4 case gNB).

The service classification unit 110 is in charge of a function of distinguishing a service received by the UE 10 in a radio section setup process with the terminal, that is, the UE 10 (RRC Setup).

In the present invention, from the standpoint of the terminal (UE), the base station apparatus 100 corresponding to the MN is intended to implement a method in which the terminal (10, UE) can recognize (distinguish) the incoming call service for the UE (10) at an early point in time.

Specifically, in the present invention, the Mobile Termination Cause function is additionally defined during paging, so that the base station device 100 can provide a call service during the RRC Setup process with the UE 10, which is a significantly faster time point than before. I want to be able to recognize (distinguish) incoming calls.

More specifically, in the present invention, when a paging trigger for an incoming service to the UE 10 is triggered, the core node (eg, UPF/SMF, P/S-GW) Based on the node or server (App Server) that triggers the service type (Service Type) can be identified/classified.

3 shows an embodiment of criteria for distinguishing service types according to an embodiment of the present invention.

As shown in FIG. 3, in the present invention, the core node (eg UPF/SMF, P/S-GW) is a predetermined node (Node) to classify into a call service (eg, voice call) such as IMS Node IP Alternatively, when paging is triggered in the server (App Server), the current service type (Service Type, MT-Voicecall) can be identified/classified as a call service (eg, voice call).

In addition, in the present invention, the core node (eg UPF/SMF, P/S-GW) is a predetermined node or server (App) to be divided into data services such as FTP Server, SMS/MMS Server and other server IPs. When paging is triggered in Server), this service type (Service Type, MT-Data) can be identified/classified as a data service.

In addition, in the present invention, the core node (e.g., UPF/SMF, P/S-GW) triggers paging in a predetermined node or server (App Server) to classify into signaling services such as LBS Server IP. (Trigger), this service type (Service Type, MT-Signaling) can be identified/classified as a signaling service.

And, in the present invention, the core node (eg UPF/SMF, P/S-GW) transmits service identification information according to the identified/classified service type to the core node in charge of control (eg AMF, MME) It can be transmitted to the base station device 100 through.

Describing a specific embodiment, in the present invention, the Service Type Field is additionally defined in the Namf_Communication_N1N2MessageTransfer message transmitted by UPF/SMF to AMF, and a Cause is recorded as service identification information in the corresponding Service Type Field, and UPF service identification information is recorded. /SMF can transmit to AMF.

In addition, in the present invention, the Service Type is additionally defined in the paging message of the NGAP Protocol transmitted by the AMF to the gNB (100, base station device of the present invention), and the cause of the Service Type field in the Namf_Communication_N1N2MessageTransfer message is NGAP Protocol paging (Paging) The AMF can transmit service identification information to the gNB (100, the base station device of the present invention) by recording the service type in the message.

Meanwhile, in another specific embodiment, in the present invention, the Service Type Field is additionally defined in the Downlink Data Notification message transmitted by the P/S-GW to the MME, and the Cause is recorded as service identification information in the corresponding Service Type Field. In this way, the P/S-GW can transmit service identification information to the MME.

In addition, in the present invention, the Service Type is additionally defined in the Paging message of the S1AP Protocol transmitted by the MME to the eNB (100, base station device of the present invention), and the cause of the Service Type field in the Downlink Data Notification message is S1AP Protocol The MME may transmit service identification information to the eNB (100, the base station device of the present invention) by recording the service type in the paging message of .

As such, the service classification information (Cause) defined in the present invention is classified based on the node (Node) or server (App Server) that triggers paging, and the core node in charge of control (eg AMF) , MME) of the present invention may be defined as information added to the Service Type Field in a paging message transmitted from the base station apparatus 100 to the UE 10.

Referring again to the service classification unit 110, the service classification unit 110, based on the service classification information (Cause) in the paging message transmitted to the UE 10, determines the wireless section with the UE 10. Services can be identified/recognized during the setup process.

Specifically, in the present invention, the following two methods (UE transmission method / storage method) can be proposed as a method of distinguishing / recognizing services based on service identification information (Cause) in a paging message. .

First, the UE transmission method is a method of delivering service identification information (Cause) in a paging message to the UE.

Specifically, the base station apparatus 100 (eNB/gNB) of the present invention delivers a paging message (including Cause) transmitted through a core node (eg, AMF, MME) to the UE 10.

In this case, the UE 10 checks the paging message of the RRC Layer and transmits the radio section setup request message (RRC Setup Request/RRC Conn. Request) as a cause when attempting radio section setup (RRC Setup) It can be transmitted by inserting the service type (eg MT-Voice).

Accordingly, in the case of the UE transmission method, the service classification unit 110 determines the service included in the radio section setup request message (RRC Setup Request/RRC Conn. Request) received from the UE 10 that has received the paging message. Based on the identification information-based identifier (Cause: MT-Voice), the service received by the UE 10 can be distinguished.

Next, a storage method is a method of mapping and storing service identification information (Cause) in a paging message with a UE.

Specifically, the base station apparatus 100 (eNB/gNB) of the present invention transmits a paging message (including Cause) transmitted through a core node (eg AMF, MME) to the UE 10, while paging ) The terminal identifier (eg, TMSI) identified in the message and the service identification information (Cause) extracted from the paging message may be mapped and stored.

Accordingly, in the case of the storage method, the service classification unit 110 receives a radio section setup request message (RRC Setup Request/RRC Conn. Request) received from the UE 10 that has received the paging message, radio section Terminal identifier (e.g., TMSI) of the setup request message (RRC Setup Request/ RRC Conn. Request) and UE (e.g., TMSI) when the paging message is delivered previously and service identification information (Cause) mapped to and stored in advance Based on this, it is possible to distinguish the service received by the UE 10 this time.

As such, in the present invention, the Mobile Termination Cause function is additionally defined during paging, so that the base station can provide call service through classification of incoming service in the RRC Setup process with the UE 10, which is a significantly faster time point than before. (e.g., voice call) can be recognized (distinguished).

Here, referring to FIG. 2, the configuration of the terminal device 10 (UE) according to an embodiment of the present invention will be described, the terminal device 10 will include a identification information check unit 12 and an identifier delivery unit 14. can

The classification information checking unit 12 is responsible for checking service identification information for distinguishing an incoming service from a paging message received through the base station 100 .

That is, the classification information checking unit 12 can check the paging message of the RRC Layer and check the service classification information (Cause) from the Service Type field in the paging message additionally defined in the present invention.

The identifier transfer unit 14 is responsible for transmitting an identifier based on service identification information (Cause) to the base station 100 during a wireless section setup process with the base station 100 according to the received paging message.

That is, upon receiving the paging message, the terminal device 10 transmits a radio section setup request message (RRC Setup Request/RRC Conn. Request) to the base station 100 to attempt radio section setup (RRC Setup).

At this time, the identifier transfer unit 14, as a cause in the radio section setup request message (RRC Setup Request/RRC Conn. Request), an identifier based on service identification information (Cause) additionally defined in the present invention, that is, Service Type (eg, MT -Voice) can be inserted and transmitted.

In this case, in the base station (100, in particular, the service classification unit 110), based on the identifier identified from the cause in the radio section setup request message (RRC Setup Request/RRC Conn. Request), that is, Service Type (eg, MT-Voice) As a result, it is possible to check whether the service received by the terminal device 10 (UE) is a predefined specific service.

In addition, in the base station 100 (particularly, the call processing control unit 120), when the current incoming service to the terminal device 10 (UE) is identified as a predefined specific service, the current incoming call to the terminal device 10 (UE) It is possible to control call processing so that some procedures unrelated to the provision of a specific service are omitted among call processing processes performed according to a predefined procedure for providing a specific service to be provided.

Referring again to the configuration of the base station 100 in detail, the call processing control unit 120, when the service classification result of the service classification unit 110 is a predefined specific service, the specific service received for the UE 10 It is responsible for controlling call processing so that some procedures unrelated to the provision of a specific service are omitted among the call processing procedures performed according to predefined procedures after radio section setup (RRC Setup) for service provision.

At this time, in the present invention, as a specific service, a call service (eg, voice call) in which promptness of service start and continuity during service use are important may be previously defined.

Accordingly, when the call processing control unit 120 recognizes (separates) the reception of a specific service, that is, a call service (eg, voice call), in the process of setting up a radio section with the UE 10 (RRC Setup), the call is received for the UE 10. Some procedures unrelated to the provision of call service (eg voice call) are omitted during the call processing process performed according to the predefined procedure after radio section setup (RRC Setup) in order to provide call service (eg voice call) You can control call processing.

In the present invention, when a call service (eg, voice call) is received, an unnecessary signaling procedure performed regardless of the provision of a call service (eg, voice call) is intended to be implemented.

Specifically, in the present invention, among the call processing procedures performed according to a predefined procedure after radio section setup (RRC Setup) to provide a call service (eg, voice call), the call service received this time (eg, voice call) It is intended to omit unnecessary signaling procedures through call processing control that omits some procedures irrelevant to provision.

Hereinafter, a call processing control process in which some procedures unrelated to providing a call service (eg, voice call) are omitted, and will be described in detail according to a call service providing scenario.

First, the case of EPS fallback will be described, and the base station apparatus 100 of the present invention corresponds to a gNB.

In the case of EPS Fallback, some procedures omitted during the call processing process performed after radio section setup (RRC Setup) are UE 10 and base station for radio section setup between UE 10 and base station device 100 (gNB) At least one of a signaling procedure between the device 100 (gNB) and a signaling procedure between the base station device 100 (gNB) and the core node (AMF) for session connection based on the base station device 100 (gNB) of the UE 10 include

That is, when the call processing control unit 120 recognizes (separates) an incoming call service (eg, voice call) in the radio section setup process with the UE 10 (RRC Setup), the LTE After moving to , it can be determined whether it is an EPS-FB situation that needs to be initiated or a VoNR situation initiated by 5G.

Accordingly, if it is determined in the EPS-FB situation, the call processing control unit 120 does not require a gNB-based session connection, so the base station device 100 (gNB)-based session connection of the UE 10 A signaling procedure (RRC Reconfiguration/Complete) between the UE 10 and the base station device 100 (gNB) for radio section configuration corresponding to pre-processing may be omitted.

In addition, if it is determined in the EPS-FB situation, the call processing control unit 120 receives a context setup request (Initial Context Setup Request) received from the core node (AMF) during the call processing process performed after the radio section setup (RRC Setup) ) in response to the context setup failure (Initial Context Setup Failure (Cause: EPS-FB)), so that the signaling procedure of the base station device (100, gNB)-based session (Session) connection by the core node (AMF) is not initiated By doing so, the corresponding signaling procedure can be omitted.

In FIG. 5, in the case of EPS fallback as described above, the call connection procedure of the call service (eg, voice call) according to the present invention and the point of time when the base station recognizes the call service are shown.

In the following description, as a service classification/recognition method based on service identification information (Cause) in a paging message proposed in the present invention, the UE transmission method among the above-described UE transmission methods/storage methods will be mentioned and embodiments will be described. .

As shown in FIG. 5 , the gNB 100 transfers paging according to an incoming call service (eg, voice call) received from the AMF 30 to the UE 10 .

At this time, as can be seen in FIG. 5, in the present invention, the Mobile Termination Cause function is additionally defined during paging, and based on the node or server (App Server) that triggers paging The service classification information (Cause) according to the service type classified by is additionally delivered together through a paging message.

In this case, the UE 10 checks the paging message of the RRC Layer and transmits the radio section setup request message (RRC Setup Request), and when attempting the radio section setup (RRC Setup), the Service Type (eg: MT-Voice) can be inserted and transmitted.

Accordingly, as can be seen in FIG. 5, in the present invention, the gNB 100 performs radio communication between the UE and the gNB according to the RRC Setup Request received from the UE 10 receiving the paging message. Perform the section setup process (RRC Conn. Setup/Complete), but this time during the radio section setup process based on the service identification information-based identifier (Cause: MT-Voice) included in the radio section setup request message (RRC Setup Request) It is possible to recognize/distinguish whether a service received by the UE 10 is a call service (eg, voice call) (EPS-FB or VoNR determined according to the operating state of the UE 10).

Then, as shown in FIG. 5, in the present invention, when the gNB 100 determines the EPS-FB, if it recognizes that the service received by the UE 10 is a call service (eg, voice call), the gNB Since the base session connection is unnecessary, the signaling procedure between the UE 10 and the gNB 100 for radio section configuration corresponding to pre-processing for the gNB 100-based session connection of the UE 10 ( RRC Reconfiguration/Complete) can be omitted (Skip).

In addition, in the present invention, the gNB (100), the context setup failure (Initial Context In response to Setup Failure (Cause: EPS-FB)), the signaling procedure of the gNB (100)-based Session connection by the AMF (30) is not initiated for gNB (100)-based session (Session) connection The signaling procedure between the gNB 100 and the AMF 30 can be omitted, and thus unnecessary signaling (UE Context Release Request/Command/Complete) for releasing the gNB 100-based session can be omitted. Yes (Skip).

Meanwhile, when the gNB 100 recognizes that the service received by the UE 10 is a call service (eg, voice call), after radio section setup (RRC Setup) to provide a call service (eg, voice call) Among the call processing procedures performed according to the pre-defined procedure, as described above, some unnecessary signaling procedures are omitted, and signaling is performed to actually provide a call service (eg, voice call) to the UE 10 as in the past. do.

That is, as shown in FIG. 5, the gNB 100 immediately releases (RRC Release) the radio section with the UE 10 according to skipping the signaling procedure omitted in the present invention, and then the UE 10 And signaling for inter-LTE radio access and eNB 20-based bearer connection (eg, QCI 1) may be performed.

Next, the case of NSA VoLTE will be described, and the base station apparatus 100 of the present invention corresponds to an eNB.

In the case of NSA VoLTE, some procedures omitted during the call processing process performed after radio section setup (RRC Conn. At least one of the signaling procedures between the eNB 10 and the gNB 20 for additional connection between other base stations (gNB 20) of an access network (5G) different from the support access network (LTE) of 100).

That is, when the call processing control unit 120 recognizes (identifies) an incoming call service (eg, voice call) in the process of setting up a radio section with the UE 10 (RRC Conn. Setup), the UE 10 enters the Dual Connectivity state. Since it is not necessary to additionally access the gNB to operate as, a radio section setup message for setting up a radio section between the UE 10 and the eNB 100 during a call processing process performed after radio section setup (RRC Conn. Setup) ( RRC Reconfiguration) by excluding information (e.g., NR frequency band and B1 Event) that allows the UE 10 to perform an additional connection target and measurement report from the radio section configuration message (RRC Reconfiguration), By allowing the measurement report signaling procedure not to be performed, the corresponding signaling procedure may be omitted.

In FIG. 6, in the case of NSA VoLTE as described above, a call connection procedure of a call service (eg, voice call) according to the present invention and a point in time when the base station recognizes the call service are shown.

As shown in FIG. 6 , the eNB 100 transfers paging according to an incoming call service (eg, voice call) received from the MME 30 to the UE 10 .

At this time, as can be seen in FIG. 6, in the present invention, the Mobile Termination Cause function is additionally defined during paging, and based on the node or server (App Server) that triggers paging The service classification information (Cause) according to the service type classified by is additionally delivered together through a paging message.

In this case, the UE 10 checks the Paging message of the RRC Layer and transmits the radio section setup request message (RRC Conn. Request), and when trying to set up the radio section (RRC Conn. Setup), the Service Type as the cause (Example: MT-Voice) can be inserted and transmitted.

Therefore, as can be seen in FIG. 6, in the present invention, the eNB 100 performs a radio interval setup request message (RRC Conn. Request) received from the UE 10 to which the paging message is transmitted, between the UE and the eNB. Perform the radio section setup process (RRC Conn. Setup/Complete), but set up the radio section based on the service identification information-based identifier (Cause: MT-Voice) included in the radio section setup request message (RRC Conn. Request) Among them, it is possible to recognize/distinguish whether the service received by the UE 10 this time is a call service (eg, voice call).

Then, as shown in FIG. 6, in the present invention, if the eNB 100 recognizes that the service received by the UE 10 is a call service (eg, voice call), the UE 10 is in a Dual Connectivity state. Since it is not necessary to additionally access the gNB to operate as , when the radio section configuration message (RRC Reconfiguration) is transmitted to the UE 10, an additional connection target and measurement report are performed from the radio section configuration message (RRC Reconfiguration) to the UE 10. The measurement report signaling procedure by the UE 10 is not performed by excluding information (eg, NR frequency band and B1 Event) so that the corresponding measurement report signaling procedure can be skipped (Skip).

In this case, since the signaling of the measurement report (B1 Measure) by the UE 10 does not occur, in the present invention, the relationship between the UE 10 and the gNB 20 proceeding due to the signaling of the measurement report (Measure B1) A signaling procedure between the eNB 10 and the gNB 20 for additional access (SgNB Addition Request/Ack, ?? SgNB Reconfig. Complete) will also be omitted, thereby preventing additional access between the UE 10 and the gNB 20. Unnecessary signaling for release (SgNB Release Request/Ack, ?? SgNB Reconfig. Confirm) can be omitted (Skip).

Meanwhile, when the eNB 100 recognizes that the service received by the UE 10 is a call service (eg, voice call), a radio section setup (RRC Conn. Setup) is performed to provide a call service (eg, voice call). ) Signaling for actually providing a call service (eg, voice call) to the UE 10 as in the past, while omitting some unnecessary signaling procedures as described above during the call processing process performed according to a predefined procedure thereafter. this is done

That is, as shown in FIG. 6, after the context setup process (Initial Context Setup Request/Complete) is completed, the eNB 100 skips the signaling procedure omitted in the present invention, so that eNB 100-based Signaling for bearer connection (eg, QCI 1) may be performed.

Meanwhile, in the above description with reference to FIG. 5, the gNB 100 of the present invention recognizes (distinguishes) the incoming call service (eg, voice call) during the RRC Setup process with the UE 10, and the UE When the NSA VoNR situation is determined according to the operation state of (10), since it is unnecessary for the UE 10 to additionally access the eNB to operate in the Dual Connectivity state, call processing performed after radio section setup (RRC Setup) During the process, when a radio section configuration message (RRC Reconfiguration) is transmitted for radio section configuration between the UE 10 and the gNB 100, the radio section configuration message (RRC Reconfiguration) performs an additional connection target and measurement report to the UE 10. By excluding information (eg, LTE frequency band and B1 Event) to be performed, the measurement report signaling procedure by the UE 10 is not performed, so that the corresponding signaling procedure can be omitted.

On the other hand, in the description of various embodiments above, dual connectivity and NSA have been described, but the present invention is applicable to CA (Carrier Aggregation) technology that combines and uses different frequency band cells of the same base station in addition to dual connectivity. It will be applicable.

Specifically, in the case of LTE/SA CA, the base station apparatus 100 of the present invention may be an eNB/gNB, and in the following description, the LTE CA/eNB 100 will be described as an embodiment.

In the case of LTE CA, some procedures omitted during the call processing process performed after radio section setup (RRC Conn. It includes a signaling procedure between the UE 10 and the eNB 100.

That is, when the call processing control unit 120 recognizes (separates) an incoming call service (eg, voice call) in a radio section setup process with the UE 10 (RRC Conn. Setup), the UE 10 enters the CA state. Since additional access to the sCell is unnecessary for operation, a radio section setup message (RRC Reconfiguration) by excluding information (CA add information) for sCell additional access to the UE 10 from the radio section configuration message (RRC Reconfiguration) so that the sCell additional access signaling procedure by the UE 10 is not performed. The signaling procedure may be omitted, and thus unnecessary signaling (CA Delete) for releasing the sCell of the UE 10 may be omitted.

In FIG. 7, in the case of LTE CA, the existing (left) and the present invention (right) are compared to show a call connection procedure of a call service (eg, voice call) and a point in time when the base station recognizes the call service.

As described above, according to the present invention, through the implementation of a method capable of recognizing (distinguishing) an incoming call service at an early point in time and a method of omitting unnecessary signaling procedures performed regardless of the provision of a call service when a call service is received , It is realizing a new incoming call processing control method (technology) that solves the call connection delay for providing call service.

For this reason, according to the present invention, by recognizing the incoming call service at an early point in time and omitting a procedure unrelated to the actual call service provision, the call connection delay for providing the call service is solved, and the call service is provided when the call service is received. The effect of significantly shortening the call connection time for

Hereinafter, a call processing control method according to an embodiment of the present invention will be described with reference to FIG. 4 .

For convenience of explanation, the base station device (100, gNB / eNB) will be described as a subject on which the call processing control method of the present invention is performed.

In the present invention, from the standpoint of the terminal (UE), the base station apparatus 100 corresponding to the MN is intended to implement a method in which the terminal (10, UE) can recognize (distinguish) the incoming call service for the UE (10) at an early point in time.

Specifically, in the present invention, the Mobile Termination Cause function is additionally defined during paging, so that the base station device 100 can provide a call service during the RRC Setup process with the UE 10, which is a significantly faster time point than before. I want to be able to recognize (distinguish) incoming calls.

More specifically, in the present invention, when a paging trigger for an incoming service to the UE 10 is triggered (S10), a core node (eg, UPF/SMF, P/S-GW) can identify/classify the service type based on the node or server (App Server) that triggers the current paging (S20).

And, in the present invention, the core node (eg UPF/SMF, P/S-GW) transmits service identification information according to the identified/classified service type to the core node in charge of control (eg AMF, MME) It can be transmitted to the base station device 100 through (S20).

Describing a specific embodiment, in the present invention, the Service Type Field is additionally defined in the Namf_Communication_N1N2MessageTransfer message transmitted by UPF/SMF to AMF, and a Cause is recorded as service identification information in the corresponding Service Type Field, and UPF service identification information is recorded. /SMF can transmit to AMF.

In addition, in the present invention, the Service Type is additionally defined in the paging message of the NGAP Protocol transmitted by the AMF to the gNB (100, base station device of the present invention), and the cause of the Service Type field in the Namf_Communication_N1N2MessageTransfer message is NGAP Protocol paging (Paging) The AMF can transmit service identification information to the gNB (100, the base station device of the present invention) by recording the service type in the message.

Meanwhile, in another specific embodiment, in the present invention, the Service Type Field is additionally defined in the Downlink Data Notification message transmitted by the P/S-GW to the MME, and the Cause is recorded as service identification information in the corresponding Service Type Field. In this way, the P/S-GW can transmit service identification information to the MME.

In addition, in the present invention, the Service Type is additionally defined in the Paging message of the S1AP Protocol transmitted by the MME to the eNB (100, base station device of the present invention), and the cause of the Service Type field in the Downlink Data Notification message is S1AP Protocol The MME may transmit service identification information to the eNB (100, the base station device of the present invention) by recording the service type in the paging message of .

As such, the service classification information (Cause) defined in the present invention is classified based on the node (Node) or server (App Server) that triggers paging, and the core node in charge of control (eg AMF) , MME) of the present invention may be defined as information added to the Service Type Field in a paging message transmitted from the base station apparatus 100 to the UE 10.

Therefore, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB), based on the service identification information (Cause) in the paging message transmitted to the UE (10), the UE (10) and In the process of setting up the wireless section of the service, it is possible to distinguish / recognize the service (S30 to S55).

Specifically, in the present invention, as a method of classifying/recognizing services based on service identification information (Cause) in a paging message, a UE transmission method/storage method is proposed, and a recognition method according to settings by an operator. can be performed (S30).

For example, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB) is transmitted through a core node (eg, AMF, MME) when performing a UE transmission method (S30, UE transmission method) A paging message (including Cause) is delivered to the UE 10 (S40).

In this case, the UE 10 checks the paging message of the RRC Layer and transmits the radio section setup request message (RRC Setup Request/RRC Conn. Request) as a cause when attempting radio section setup (RRC Setup) It can be transmitted by inserting the service type (eg MT-Voice).

Therefore, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB) receives a radio section setup request message (RRC Setup Request/RRC Conn. Based on the service identification information-based identifier (Cause: MT-Voice) included in the Request), the incoming service to the UE 10 can be identified (S45).

On the other hand, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB), when performing the storage method (S30, storage method), paging transmitted through the core node (eg AMF, MME) ( While delivering the Paging message (including Cause) to the UE 10, the terminal identifier (e.g., TMSI) identified in the Paging message and the service identification information (Cause) extracted from the Paging message are mapped and stored. It can (S50).

Therefore, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB) receives a radio section setup request message (RRC Setup Request/RRC Conn. Request), the terminal identifier (e.g., TMSI) of the radio section setup request message (RRC Setup Request/ RRC Conn. Request) and the UE (e.g., TMSI) when the paging message is transmitted earlier and stored by mapping it Based on one service identification information (Cause), it is possible to distinguish the service received by the UE 10 this time (S55).

As such, in the present invention, the Mobile Termination Cause function is additionally defined during paging, so that the base station device (100, gNB / eNB) is significantly faster than before, that is, radio section setup with the UE 10 (RRC Setup) In the process, it is possible to recognize the incoming call of a call service (eg, voice call) through the call service classification (S60).

If this incoming call is recognized as a data service (S60, data service), in the call processing control method according to the present invention, the base station device (100, gNB / eNB), after radio section setup (RRC Setup) to provide data service The existing call processing procedure performed according to the defined procedure will be performed (S70).

On the other hand, if this incoming call is recognized as a call service (eg, voice call) (S60, call service), in the call processing control method according to the present invention, the base station device 100 is a gNB, depending on the operation state of the UE 10 After moving to LTE, it can be determined whether it is an EPS-FB situation to be initiated or a VoNR situation initiated by 5G (S80).

In the call processing control method according to the present invention, if the base station device (100, gNB) determines EPS-FB (S80, EPS-FB), after radio section setup (RRC Setup) to provide call service (eg voice call) Call processing can be shortened by omitting some unnecessary procedures among the EPS-FB call processing procedures performed according to the procedures predefined in (S90).

Specifically, since the base station device 100 (gNB) does not require a gNB 100-based session connection, a radio section corresponding to pre-processing of the gNB 100-based session connection of the UE 10 A signaling procedure (RRC Reconfiguration/Complete) between the UE 10 and the gNB 100 for configuration may be omitted.

In addition, the base station apparatus (100, gNB) responds with a context setup failure (Initial Context Setup Failure (Cause: EPS-FB)) to the context setup request (Initial Context Setup Request) received from the AMF, and the gNB by AMF The signaling procedure between the gNB 100 and the AMF 30 for the gNB 100-based session connection can be omitted by allowing the signaling procedure of the (100)-based session connection to be uninitiated. Even unnecessary signaling (UE Context Release Request/Command/Complete) for releasing a session based on the gNB 100 can be omitted.

Of course, the base station device (100, gNB), as described above, part of the EPS-FB call processing process performed according to a predefined procedure after radio section setup (RRC Setup) to provide a call service (eg, voice call) By omitting only unnecessary signaling procedures, signaling for actually providing a call service (eg, voice call) to the UE 10 will be normally performed as in the past.

On the other hand, in the call processing control method according to the present invention, the base station apparatus (100, gNB / eNB) determines VoNR or VoLTE (S80, VoNR / VoLTE), wireless to provide call service (eg, voice call) Call processing can be shortened by omitting some unnecessary procedures among voice call processing procedures performed according to predefined procedures after interval setup (RRC Setup/RRC Conn. Setup) (S100).

For convenience of description, if the base station device 100 is an eNB, referring to VoLTE and specifically described, the base station device 100 (eNB) is unnecessary for the UE 10 to additionally access the gNB, so the UE 10 When transmitting the radio section configuration message (RRC Reconfiguration) to the UE 10 from the radio section configuration message (RRC Reconfiguration), information for performing an additional connection target and measurement report (eg, NR frequency band and B1 Event) is excluded, By allowing the measurement report signaling procedure by the UE 10 not to be performed, the corresponding measurement report signaling procedure may be omitted.

In this case, since signaling (B1 Measure) of the measurement report by the UE 10 does not occur, in the present invention, for additional access between the UE 10 and the gNB that proceeds due to the signaling (B1 Measure) of the measurement report. A signaling procedure between the eNB 10 and the gNB (SgNB Addition Request/Ack, ?? SgNB Reconfig. Complete) will also be omitted, and as a result, unnecessary signaling (SgNB Release Request/Ack) for releasing the additional connection between the UE 10 and the gNB will be omitted. , ?? SgNB Reconfig. Confirm) may be omitted.

Of course, the base station device (100, eNB), as described above, some unnecessary signaling during the voice call processing process performed according to a predefined procedure after radio section setup (RRC Setup) to provide a call service (eg, voice call) By omitting only the procedure, signaling for actually providing a call service (eg, voice call) to the UE 10 will be normally performed as in the prior art.

As described above, according to the present invention, through the implementation of a method capable of recognizing (distinguishing) an incoming call service at an early point in time and a method of omitting unnecessary signaling procedures performed regardless of the provision of a call service when a call service is received , It is realizing a new incoming call processing control method (technology) that solves the call connection delay for providing call service.

For this reason, according to the present invention, by recognizing the incoming call service at an early point in time and omitting a procedure unrelated to the actual call service provision, the call connection delay for providing the call service is solved, and the call service is provided when the call service is received. The effect of significantly shortening the call connection time for

The operation method of the call processing control method according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. The hardware devices described above may be configured to act as one or more software modules to perform the operations of the present invention, and vice versa.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the following claims. Anyone skilled in the art will extend the technical spirit of the present invention to the extent that various variations or modifications are possible.

According to the base station apparatus and the call processing control method performed in the apparatus of the present invention, in realizing a new call processing technology capable of recognizing an incoming call service at an early time and omitting procedures unrelated to actual call service provision, , It is an invention with industrial applicability because it goes beyond the limits of the existing technology, not only the use of related technology, but also the possibility of marketing or business of the applied device is sufficient, and it can be clearly implemented in reality.

10: terminal device
12: identification information confirmation unit 14: identifier delivery unit
100: base station device
110: service division unit 120: call processing control unit

Claims (14)

In a process of setting up a wireless section with a terminal, a service classification unit for classifying a service received by the terminal; and
In the case of a pre-defined specific service as a result of the service classification, a part of a call processing process performed according to a pre-defined procedure after setting up the radio section to provide the specific incoming service to the terminal, unrelated to the specific service provision A base station apparatus comprising a call processing control unit for controlling call processing so that a procedure is omitted. According to claim 1,
The service classification unit,
The base station device, characterized in that the service is distinguished in a radio section setup process with the terminal based on service identification information in a paging message transmitted to the terminal. According to claim 2,
The service classification unit,
Based on the identifier based on the service identification information included in the radio section setup request message received from the terminal receiving the paging message, the service is classified,
When receiving a radio section setup request message from a terminal that has received the paging message, the base station apparatus classifies the service based on the service identification information mapped and stored with the terminal when the paging message is transmitted. According to claim 1,
Some of the above procedures,
When the specific service is a call service and the terminal is in an EPS fallback operation situation in which the terminal moves from the access network supported by the base station device to the LTE access network,
Includes at least one of a signaling procedure between the terminal and the base station for setting a radio section between the terminal and the base station, and a signaling procedure between the base station and a core node for session connection based on the base station of the terminal A base station device characterized in that for doing. According to claim 4,
The call processing control unit,
Responding to a context setup failure in response to a context setup request received from the core node during the call processing process, so that the signaling procedure of the base station apparatus-based session connection by the core node is not initiated. Device. According to claim 1,
Some of the above procedures,
Operation situation in which the specific service is a call service and the terminal additionally accesses another base station of an access network different from the supported access network of the base station apparatus or another base station of the supported access network or another frequency band cell of the base station apparatus case,
Measurement report signaling procedure for additional access target of the terminal, signaling procedure between the base station apparatus and the other base station for additional access between the terminal and the other base station, and the base station apparatus for additional access to the other frequency band cell of the terminal and at least one of the terminal-to-device signaling procedure. According to claim 6,
The call processing control unit,
When transmitting a radio section setting message for setting a radio section between the terminal and the base station during the call processing process, information for performing an additional connection target and measurement report to the terminal is excluded from the radio section setting message, so that the terminal A base station apparatus characterized in that the measurement report signaling procedure by is not performed. In the terminal device,
a division information checking unit for checking service division information for distinguishing an incoming service from a paging message received through a base station; and
During the radio section setup process with the base station according to the paging message, an identifier based on the service identification information is delivered to the base station, so that the base station can convert the incoming service to a predefined specific service based on the identifier. Identifier that allows call processing to be controlled such that some procedures unrelated to the provision of the specific service are omitted among call processing processes performed according to predefined procedures to provide the specific incoming service to the terminal device. A terminal device comprising a delivery unit. According to claim 8,
The service classification information,
A terminal device characterized in that it is defined as information added to a service type field in the paging message, classified based on a node or server that triggers the paging. In the call processing control method performed in the base station apparatus,
In a process of setting up a wireless section with a terminal, a service classification step of classifying a service received by the terminal; and
In the case of a pre-defined specific service as a result of the service classification, a part of a call processing process performed according to a pre-defined procedure after setting up the radio section to provide the specific incoming service to the terminal, unrelated to the specific service provision A call processing control method comprising a call processing control step of controlling call processing so that a procedure is omitted. According to claim 10,
In the service classification step,
A call processing control method characterized in that the service is distinguished in a radio section setup process with the terminal based on service identification information in a paging message transmitted to the terminal. According to claim 11,
The service classification information,
The call processing control method characterized in that it is defined as information added to a service type field in the paging message, classified based on a node or server that triggers the paging. According to claim 10,
Some of the above procedures,
When the specific service is a call service and the terminal is in an EPS fallback operating situation in which the terminal moves from the access network supported by the base station device to the LTE access network,
Including at least one of a signaling procedure between the terminal and the base station for setting a radio section between the terminal and the base station, and a signaling procedure between the base station and a core node for session connection based on the base station of the terminal A call processing control method characterized in that. According to claim 10,
Some of the above procedures,
Operation situation in which the specific service is a call service and the terminal additionally accesses another base station of an access network different from the supported access network of the base station apparatus or another base station of the supported access network or another frequency band cell of the base station apparatus case,
Measurement report signaling procedure for additional access target of the terminal, signaling procedure between the base station apparatus and the other base station for additional access between the terminal and the other base station, and the base station apparatus for additional access to the other frequency band cell of the terminal and at least one of a signaling procedure between the terminals.

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