KR20150028624A - Method and apparatus for processing concurrent call - Google Patents

Abstract

When a second call is generated in which the first communication terminal requests a call connection to the first communication terminal while the first communication terminal processes a first call requesting a call connection with the second communication terminal, And a second processing unit for comparing the first time information in the call connection request message for the first call with the second time information in the call connection request message for the second call, It is possible to solve the problem that all outgoing calls can not be connected.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for processing a message,

Field of the Invention [0002] The present invention relates to a matching method and apparatus. And more particularly, to a method and apparatus for processing a handshake signal, which can determine a handshake call based on time information at the time when an outgoing call is generated when an outgoing call between one communication terminal and another handy user terminal is in progress at the same time.

As is well known, the ALL-IP network can provide interworking services with an Internet network using IP (Internet Protocol), and can provide solutions suitable for integrated multimedia services including voice, data, and real- ), The cost reduction effect can be obtained through the packet transmission.

As a core technology for providing a new service in the All-IP based communication environment, an IP Multimedia Subsystem (hereinafter referred to as " IP Multimedia Subsystem ") defined as a core technology for providing various services to subscribers based on the ALL- Quot; IMS "). Such an IMS can provide IP services over a packet network regardless of the access network format, and can provide services that require transmission of multimedia data such as one-to-one video calls as well as general call services.

As is known, in 3GPP Release 8, EPC (Evolved Packet Core), which is a network architecture, is described as one of mobile communication systems. The EPC is a collection of network nodes for the 3GPP LTE system. The EPC evolves the core network of the existing 3GPP system architecture to support Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN), which is an evolved RAN, And has an efficient network structure that simplifies the network node. A wireless communication system including an EPC and an E-UTRAN may be referred to as an evolved packet system (EPS) and corresponds to an LTE mobile communication system currently in service in Korea.

In the early stage of constructing such an LTE mobile communication system, a mixed communication environment with a legacy network such as a WCDMA (Wideband Code Division Multiple Access) mobile communication system appears. In such a communication environment, the LTE mobile communication system can access the LTE network, A dual mode mobile communication terminal device capable of connecting to the mobile communication terminal can be operated. In the early stage of the LTE mobile communication service, a WCDMA mobile communication system was used to provide a voice communication service to a dual mode mobile communication terminal, and an LTE mobile communication system was used to provide a data communication service.

Unlike this, it is VoLTE service that uses LTE mobile communication system not only for data communication but also for voice communication. These VoLTE services are also called High Definition (HD) voice services. According to the VoLTE service, it is possible to provide a cleaner HD-class voice call service in case of voice call, and users can share contents such as map, music, news, photo while displaying the same screen as the other party in real time during a call .

Meanwhile, when call processing is being performed through various communication networks as described above, when a call originated between a communication terminal and a communication terminal, which is a communication partner, is in progress at the same time, a situation may occur in which both outgoing calls can not be connected have.

In recent years, in order to provide a high-quality communication service, a technique capable of connecting one call when such a call is generated has been steadily researched and developed.

Korean Patent Publication No. 10-2013-0015602, published on February 14, 2013.

According to the embodiment of the present invention, when an outgoing call between one communication terminal and another user terminal serving as a communication partner is in progress at the same time, a processing call is determined based on time information at the time when an outgoing call is generated, It is possible to solve the problem that all outgoing calls can not be connected.

The problems to be solved by the present invention are not limited to those mentioned above, and another problem to be solved can be clearly understood by those skilled in the art from the following description.

According to one aspect of the present invention, the first communication terminal processes a first call requesting a call connection with a second communication terminal, and the second communication terminal processes a call connection request to the first communication terminal Comparing the first time information in the call connection request message for the first call with the second time information in the call connection request message for the second call when the second call is generated; And determining a processing call based on the processing result.

According to the present invention, when the first time information is smaller than the second time information, the first call is set to the processed call and the call termination is requested to the calling communication network transmitting the second call As shown in FIG.

According to another aspect of the present invention, there is provided a communication terminal, wherein, when the first communication terminal processes a first call requesting a call connection with a second communication terminal, the second communication terminal requests a call connection to the first communication terminal A second unit for transmitting the first time information in the call connection request message for the first call and the second time information in the call connection request message for the second call when the second call is generated; And a determination unit for determining a processed call by comparison.

The interleaving processing apparatus of the present invention may further comprise a call termination section for terminating a call other than the processing call.

The correspondence processing apparatus of the present invention may be installed in a telephony application server (TAS) in an intelligent network or a mobile switching center (MSC) in a legacy network.

When an outgoing call between one communication terminal and another user terminal is in progress at the same time, a processed call is determined based on time information at the time when an outgoing call is generated, so that both outgoing calls are disconnected It is possible to improve the quality of the communication service.

1 is a network configuration diagram of a mobile communication service system capable of employing an apparatus and method according to an embodiment of the present invention;
FIG. 2 is a block diagram showing an apparatus for processing a joint according to an embodiment of the present invention;
FIG. 3 is a flow chart for explaining a matching process according to an embodiment of the present invention;
FIG. 4 is a call processing diagram when a call originated between the first and second communication terminals in the intelligent network is in progress at the same time according to the embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

FIG. 1 is a network configuration diagram of a mobile communication service system capable of employing an apparatus and method according to an embodiment of the present invention. The first and second communication terminals 110 and 112, the source communication network 120, A first communication network 130, an IP multimedia system (IMS) 140, a second intelligent network 150, and the like.

In the mobile communication service system of FIG. 1, the first and second communication terminals 110 and 112 are connected to a service area of an eNodeB corresponding to a base station in an LTE mobile communication network or a service area or a service overlap area of a NodeB corresponding to a base station in a WCDMA mobile communication network Various communication services can be provided. For example, the first and second communication terminals 110 and 112 may be implemented in various forms such as a smart phone, a notepad, a tablet computer, and the like, but the present invention is not limited thereto.

On the other hand, when the first communication terminal 110 is the calling terminal, the second communication terminal 112 may be defined as the receiving terminal or vice versa, and the first and second communication terminals 110 and 112 may correspond to the corresponding Means a user terminal capable of receiving a packet-based voice call service, a packet-based video call service, a packet-based data communication service, etc. from each base station, for example, eNodeB, NodeB, VoLTE subscriber terminal that supports voice service. (Name) as a cell or a radio unit (RU) including an antenna for mobile communication installed in a building or the like, a mobile communication repeater, or the like is provided between the first and second communication terminals 110 and 112 and each base station. Additional transit equipment may be installed.

The originating communication network 120 may be a legacy network such as a CDMA2000, a WCDMA mobile communication network or the like, an asynchronous mobile communication network such as a GSM (Global System for Mobile), or an LTE communication network, but is not limited thereto.

The originating communication network 120 can receive outgoing calls from the first and second communication terminals 110 and 112. [

The destination communication network 130 may be a variety of networks such as the source communication network 120. The destination communication network 130 may be connected to the first and second communication terminals 110 and 112 ). ≪ / RTI >

The originating communication network 120 and the destination communication network 130 may provide a VoLTE communication service in cooperation with the first intelligent network 140 and the second intelligent network 150.

When the communication network is an LTE network, it is composed of eNodeB, MME (Mobility Management Entity), SGW (Serving Gateway), PGW (Packet Data Network Gateway), MSC (Mobile Switching Center) server and PCRF .

When the communication network is a legacy network, a Node B, an RNC, a Serving GPRS Support Node (SGSN), a Mobile Switching Center (MSC), a Home Location Register (HLR), a Cellular Gateway Switch (CGS) ) And a WCDMA mobile communication network. Here, the NodeB and the RNC correspond to the radio access network area, the MSC and the CGS correspond to the circuit switching core network, and the SGSN and the GGSN correspond to the packet switching core network.

The first intelligent network 140 may be, for example, an IMS (IP Multimedia Subsystem) defined as an intelligent network node. The first intelligent network 140 includes a first session control node (CSCF) 142, 1 subscriber information node (HSS) 144 and a first application service node (TAS) 146, a first media gateway (IMG) 148, and the like. have.

First, the first call control node (O-CSCF) 142 is an infrastructure system that performs call processing and performs a basic function for multimedia session control based on SIP (Session Initiation Protocol) The session control node 142 handles subscriber registration, authentication, billing, service triggering and routing, caller location inquiry, compression and decompression of SIP messages, and the like, and is divided into Proxy_CSCF, Interogating-CSCF, Serving- Can be.

The first subscriber information node (HSS) 144 refers to a server node including a database storing subscriber information and the like for a mobile communication network (e.g., LTE network). The subscriber profile information, authentication, Location-related data, and the like.

Next, the first application service node (TAS) 146 performs additional service operations such as caller indication, call / incoming call prohibition, call forwarding, and the like, and performs call processing, call connection management, and message field change for call processing And provides interworking and operation with various nodes for billing and execution of call session control node (CSCF), subscriber information node (HLR), multimedia resource node (MRF) Management, administration, maintenance, and the like. Here, the originating application service node (O-AS) may be defined as an originating-telephony application server (O-TAS).

Also, the first application service node 146 may add time information for matching the call when a call connection request (SIP INVITE message) is received from the first session control node 142 side.

The first media interworking gateway 148 can support interworking between mangers when the source communication network 120 and the destination communication network 130 are legacy networks. That is, the first media interworking gateway 148 supports media conversion, and can convert and transmit a message received from the external communication network.

On the other hand, the second intelligent network 150 can mean an IMS (IP Multimedia Subsystem) like the first intelligent network 140 described above, and includes a second session control node (CSCF) 152, a second subscriber information node (HSS) 154 and a second application service node (TAS) 156, an interworking media gateway (T-IMG) 158 The overall function and the function at each node 152,154,156 and 158 may be determined by the function at the first intelligent network 140 and at each corresponding node 142,144, Substantially the same.

Therefore, detailed description of the functions of the respective nodes 152, 154, 156, and 158 constituting the second intelligent network 150 will not be described here in order to avoid unnecessary redundant description for the sake of simplification of the specification.

On the other hand, in the mobile communication service system of FIG. 1, when the outgoing call is generated in the source communication network 120, the destination communication network 130, the first intelligent network 140, and the second intelligent network 150, Can be added. That is, when an outgoing call is a call for VoLTE service, the first and second application service nodes 146 and 156 add time information to generate a call connection request message. If the outgoing call is a call through a legacy network, 120 and the exchange of the destination communication network 130, for example, the MSC.

When the outgoing call is a VoLTE incoming call through the legacy network, the outgoing and incoming media gateway 148 and 158 of the first and second intelligent networks 140 and 150 receive the time information from the legacy network, And perform call processing.

The time information added by the first and second application service nodes 146 and 156 is transmitted to the first and second media gateway 148 and the second media gateway 150. In this case, when the outgoing call is received through the first and second intelligent networks 140 and 150 to the legacy network, 158 to an ISUP message and may be delivered to the legacy network.

In addition, in the case of outgoing calls received from other business networks such as a wired network or another mobile communication service provider network, time information can be added in the CGS of the legacy network. The time information added in the CGS can be converted and transmitted to the network that receives the outgoing call and performs the incoming signal processing.

In order to process the above-described origination-side communication network 120, the receiving-side communication network 130, the first intelligent network 140, and the second intelligent network 150, (200). In particular, in the first intelligent network 140 and the second intelligent network 150, when the ARPU 200 is installed in the first application service node 146 and the second application service node 156, And the destination communication network 130 are legacy networks, the matching processor 200 may be installed in the MSC. In this case, the right arrow indicates that the first communication terminal 110 requests a call connection to the second communication terminal 112 and the second communication terminal 112 requests a call connection to the first communication terminal 110 And the second processing unit 200 can simultaneously determine the priority for the first and second calls.

The first and second communication terminals 110 and 112 are all in a call state when a call originated between the first communication terminal 110 and the second communication terminal 112 that is the other party of communication is proceeding at the same time State, the two outgoing calls fail. For example, when the first and second communication terminals 110 and 112 are disconnected due to a call environment during a mutual communication, a situation where a call connection is attempted again to the other party frequently occurs. At this time, if the outgoing calls between the first and second communication terminals 110 and 112 are made at substantially the same time, the outgoing call of the other party is received before any one of the two parties attempting to make a call is connected, You can hear the signal.

The detailed configuration and operation of the joint processing apparatus 200 interlocked with each network as described above will be described with reference to Figs. 2 and 3. Fig.

FIG. 2 is a block diagram showing the internal structure of the joint processing apparatus 200 according to the embodiment of the present invention.

As shown in the figure, the registration processing apparatus 200 may include a check unit 210, a determination unit 220, a call termination unit 230, and the like.

The check unit 210 may check whether or not a fit is generated. That is, when the first communication terminal 110 processes the first call requesting a call connection with the second communication terminal 112, the second communication terminal 112 is connected to the first communication terminal 112 It is possible to determine whether a second call requesting a call connection is generated or not based on whether the second call is generated.

The determination unit 220 may determine the processed call by comparing the first time information in the connection request message of the first call with the second time information of the connection request message of the second call when the check result of the check unit 210 is YES have. Here, the first and second time information may be set by a communication network which first receives the first and second calls.

If the first and second time information corresponding to the first and second occurrence times are the same in a predetermined range, for example, ms, the determination unit 220 randomly selects one of the first and second calls, Can be determined as the processed number.

The call termination unit 230 may send a call termination message to the communication network that has sent the call to terminate the call other than the processed call.

A process in which the FIFO processing apparatus 200 having such a configuration operates will be described with reference to FIG.

FIG. 3 is a flowchart illustrating a matching process according to an embodiment of the present invention.

As shown in the figure, the matching processing unit 200 checks whether or not an occurrence of the justification is generated, and determines whether the justification is generated (step 302). That is, the check unit 210 of the FA 200 may use the called party information and the caller information in the call connection request message or determine that two call connection request messages are generated within a short time, for example 0.001 ms, .

As a result of the determination in step 302, if a right call is generated, the determining unit 220 extracts the first and second time information t1 and t2 from the first and second call connection request messages (step 304) t1) with the second time information t2 (step 306).

If the first time information t1 is smaller than the second time information t2 as a result of the comparison in step 306, the determination unit 220 determines that the first call connection request message including the first time information t1 is a processing call And performs a call connection procedure (step 308).

Then, the call termination unit 230 transmits a call termination message to the first IN network 140 that has transmitted the second call to terminate the second call, for example, the calling communication network 120 or the first IN network 140 that transmitted the second call. (Step 310).

On the other hand, if it is determined in step 306 that the first time information t1 and the second time information t2 are the same, the determination unit 220 determines that the call is indefinite processing (step 312).

Thereafter, the decision unit 220 randomly selects one of the first and second calls, and determines the selected call as a processed call to perform a call connection procedure (step 314). Accordingly, the call terminating unit 230 terminates the call by transmitting a call termination message to the communication network that has originated the call other than the processed call, respectively.

On the other hand, if the first time information t1 is greater than the second time information t2 as a result of the comparison in step 306, the determination unit 220 determines a second call connection request message including the second time information t2 And the call connection procedure is performed (step 316).

Then, the call termination unit 230 transmits a call termination message to the first IN network 140 that has transmitted the first call to terminate the first call, for example, the calling communication network 120 that transmitted the first call or the first IN network 140 (Step 318).

An example in which the above-described joint processing apparatus 200 is applied to an intelligent network will be described with reference to FIG.

4 is a call processing diagram when a call originated between the first and second communication terminals 110 and 112 in the first and second intelligent networks 140 and 150 is in progress at the same time according to the embodiment of the present invention.

4, the first communication terminal 110 transmits a first call connection request message, for example, an Invite message to the first communication network 120 in order to attempt a call to the second communication terminal 120 To the first call session control node 142 (step 400).

Accordingly, the first application service node 146 of the first intelligent network 140 adds the first time information to the first call connection request message received (step 402) through the first call session control node 142 Step 404) and transmits it to the second intelligent network 150 through the first call control node 142 (step 406).

Meanwhile, the second intelligent network 150 receives a second call connection request message from the second communication terminal 112 to the first communication terminal 110 (step 408). Then, the call connection process is performed in the same manner as the steps of processing the first call connection request message, and the second call connection request message to which the second time information is added is transmitted to the first INPUT 140 (step 410, 412, 414).

It is assumed that steps 400 and 408 are performed with a short time difference. Accordingly, all of the outgoing calls made by the first communication terminal 110 and the second communication terminal 112 to the counterpart communication terminal are not connected and are in progress.

In addition, in the embodiment of the present invention, the first and second time information added to the first and second call connection request messages are transmitted to the first and second intelligent networks 140 and 150 at the time of receiving the first and second call connection request messages . ≪ / RTI >

At this time, the second processing unit 140 of the first intelligent network 140 and the second processing unit 150 of the second intelligent network 150 can determine the processed call through the matching process as shown in FIG. For example, when the first time information is smaller than the second time information, the first call connection request message including the first time information is processed to process the outgoing call generated from the first communication terminal 110, A call with the terminal 110 as the caller and the second communication terminal 112 as the receiver can be set (step 416). That is, since the first time information in the first call connection request message is smaller than the second time information in the second call connection request message, the second processing unit 200 of the first intelligent network 140 transmits 2 call termination request message.

Meanwhile, the second handover processing device 200 of the second intelligent network 150 terminates the outgoing call processing of the second communication terminal 112 in response to the call termination message transmission request of the handover processing device 200 of the first intelligent network 140 do.

In the embodiment of the call processing procedure of the present invention, although the correspondence processing device 200 of the first intelligent network 140 requests the call end message transmission, for example, . That is, the second processing unit 200 of the second intelligent network 150 determines that the first time information is smaller than the second time information, and then terminates the call processing process originated from the second communication terminal 112 based on the first time information And request the first intelligent network 140 to terminate the call processing.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It is easy to see that this is possible. That is, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention.

Therefore, the scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

According to the embodiment of the present invention, when an outgoing call between one communication terminal and another user terminal serving as a communication partner is in progress at the same time, a processing call is determined based on time information at the time when an outgoing call is generated, Can be used for a technique that can be used.

The present invention including this technical configuration can be applied to VoLTE (or LTE) mobile communication network, thereby realizing the reliability and quality enhancement of VoLTE or LTE services.

110, 112: first and second communication terminals 120: originating communication network
130: Destination communication network 140: Outgoing intelligent network
150: 2nd intelligent network 200:
210: check unit 220:
230:

Claims (6)

When the first communication terminal processes a first call requesting a call connection with the second communication terminal, the second communication terminal determines whether a second call requesting a call connection to the first communication terminal is generated ,
And comparing the first time information in the call connection request message for the first call with the second time information in the call connection request message for the second call when the second call is generated,
Matching method. The method according to claim 1,
Wherein determining the processed call comprises:
If the first time information is smaller than the second time information, the first call is determined as the processed call, and a call termination is requested to the calling communication network transmitting the second call
Matching method. The method according to claim 1,
Wherein determining the processed call comprises:
If the first time information and the second time information are the same within a predetermined range, either the first call or the second call is determined to be a processed call
Matching method. When the first communication terminal processes the first call requesting the call connection with the second communication terminal, the second communication terminal checks whether the second call requesting the call connection to the first communication terminal occurs Wow,
And a determining unit for comparing the first time information in the call connection request message for the first call with the second time information in the call connection request message for the second call when the second call is generated,
An interlocking device. 5. The method of claim 4,
Further comprising a call termination unit for terminating a call other than the processed call
An interlocking device. The method according to claim 4 or 5,
The above-
A Telephony Application Server (TAS) in an intelligent network or a Mobile Switching Center (MSC) in a legacy network
An interlocking device.

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