KR20150030504A - Method and apparatus for controlling video telephony of group - Google Patents
Method and apparatus for controlling video telephony of group Download PDFInfo
- Publication number
- KR20150030504A KR20150030504A KR20130109852A KR20130109852A KR20150030504A KR 20150030504 A KR20150030504 A KR 20150030504A KR 20130109852 A KR20130109852 A KR 20130109852A KR 20130109852 A KR20130109852 A KR 20130109852A KR 20150030504 A KR20150030504 A KR 20150030504A
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- video call
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- group video
- call
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
The present invention relates to a group video call service, and more particularly, to a group video call service in which a support terminal for a group video call and a non-support terminal (VoLTE terminal) are distinguished from an intelligent network node in a multi- And more particularly, to a group video call control method and apparatus therefor.
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.
In 3GPP Release 8, EPC (Evolved Packet Core), which is a network architecture, is described as one of mobile communication systems. EPC is a set of network nodes for 3GPP LTE (Long Term Evolution) to be.
This 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, It has an efficient network structure in which the network node is simplified. A wireless communication system including an EPC and an E-UTRAN may be referred to as an evolved packet system (EPS), and an LTE mobile communication system currently in service in Korea can be regarded as such.
Since the LTE mobile communication system can allocate a plurality of communication resources to form a plurality of video call routes, it is possible to provide a multi-party group video call service as well as a one-to-one video call service. Such a group video call service may be referred to as a conference video call service.
That is, the LTE (or VoLTE) mobile communication subscribers invite the C terminal (group video call request) by the A terminal acting as a guard during the video communication between the A terminal (calling terminal) and the B terminal (called terminal) In order to do so, the originating-telephony application server (O-TAS) receives a group video call service from a terminal (TAS) through a mobile communication network node to a terminating-telephony application server (T-TAS) And the called TAS side transmits a group call request (INVITE) to the target terminal through the mobile communication network node.
As is well known, a mixed communication environment in which an LTE mobile communication system (LTE network) is mixed with a legacy network such as a CDMA mobile communication system (2G network) and / or a WCDMA mobile communication system (3G network) In this hybrid communication environment, the LTE terminal is a dual mode communication terminal (UE) capable of accessing an LTE network and capable of accessing a legacy network such as a Wideband Code Division Multiple Access (WCDMA) . ≪ / RTI > However, it is a reality that the legacy terminal (2G terminal or 3G terminal) used in the legacy network can not access the LTE network.
Typically, when a subscriber who is in the middle of a video call wants to select and invite an arbitrary terminal as a target terminal in order to receive a group video call service desired by the user, whether the target terminal supports a group video call or a group video It is not clear whether the terminal is a non-callable terminal.
Accordingly, when the terminal A invites the terminal C for the group video call while the terminal A (calling terminal) and the terminal B (called terminal) are in video communication, according to a request from the originating TAS, (E.g., INVITE) to the C terminal via the C-terminal. If the C-terminal is a non-serving terminal (legacy terminal), the C-terminal is a non-serving terminal even though the called TAS has transmitted the INVITE to the C- The A and B terminals are not provided with the group video call service with the C terminal.
That is, according to the conventional method, there is a problem that unnecessary message traffic is caused in the incoming TAS although the group video call service is not provided when the terminal that is invited to the group video call is a legacy terminal, It is a factor that causes unnecessary waste of resources in the environment.
When a call is requested to a target terminal that wants a group video call during a video call between two terminals, it is checked whether the target terminal is a support terminal of a group video call or a non-supported terminal (legacy terminal) In this paper, we propose a new group video call control scheme that blocks group call requests from an intelligent network node to a target terminal.
The problems to be solved by the present invention are not limited to those mentioned above, and another problem to be solved not mentioned can be clearly understood by those skilled in the art from the following description .
According to one aspect of the present invention, there is provided a method for controlling a group video call, comprising the steps of: checking whether the target terminal is a support terminal or a non-support terminal of the group video call when receiving a group invitation for a target terminal, And blocking transmission of a group call request to the target terminal when the terminal is a non-serving terminal.
According to another aspect of the present invention, there is provided a communication system including a subscriber DB for storing terminal information for confirming whether a group video call is supported, a request receiver for receiving a group invitation for a target terminal to which the group video call is desired, A terminal management unit for checking whether the target terminal is a support terminal or a non-supported terminal of the group video call through the terminal information search of the subscriber DB when the terminal is received; And a call request blocking unit for blocking transmission of the call request.
The present invention prevents unnecessary message traffic from the intelligent network node by blocking the group call request sent from the intelligent network node to the corresponding terminal when the corresponding terminal requested for the group video call is a non-supported terminal (legacy terminal) of the group video call It is possible to effectively prevent unnecessary resource waste in the mobile communication environment from being caused.
FIG. 1 is a network configuration diagram of a heterogeneous mobile communication hybrid system to which a group video call control scheme according to the present invention can be applied,
FIG. 2 is a block diagram of a node device to which a group video call control scheme according to the present invention is applicable;
FIG. 3 is a block diagram of a group term call control apparatus according to the present invention;
FIG. 4 is a flowchart illustrating a control procedure at a network node when a group invitation for a group video call is generated according to the present invention. FIG.
FIG. 5 is a flowchart illustrating a main procedure for determining whether a group call request is transmitted when a target terminal received a group invitation according to the present invention is a non-serving terminal of a group video call.
First, the advantages and features of the present invention, and how to accomplish them, will be clarified with reference to the embodiments to be described in detail with reference to the accompanying drawings. While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
In the following description of the present invention, 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. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to intentions or customs of a user, an operator, and the like. Therefore, the definition should be based on the technical idea described throughout this specification.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a network configuration diagram of a heterogeneous mobile communication hybrid system to which a group video call control scheme according to the present invention can be applied, and includes a plurality of communication terminals (UE) 110/1 110/3, a first
Referring to FIG. 1, communication terminals UE-A and UE-B 110/1, 110/2, 110 and 110 are provided with mobile communication related services and the like by a base station (eNodeB) 121 in a first
The communication terminals UE-A and UE-B can realize a group video call by inviting a target terminal (for example, the communication terminal UE-C) desiring group video communication during a video call. When a video call is connected, a message indicating whether the called terminal is a support terminal for a group video call or a non-supported terminal can be provided from the
In addition, the communication terminal (UE-C) 110/3, which is provided with the mobile communication related service by the second
The first
SGW, PGW, PCRF, etc.) may be partially or selectively incorporated or replaced with other components depending on the network environment of the mobile communication network system.
First, the
The
In addition, the
The
The
In addition, the
Next, the
Although not shown in the figure, the second
On the other hand, the
First, the call session control node 141 performs call processing and performs basic functions such as Session Initiation Protocol (SIP) based multimedia session control. The call session control node 141 includes a subscriber registration , Authentication, billing, service-specific triggering and routing, caller location inquiry, and decompression and release of SIP messages, and can be divided into Proxy_CSCF, Interogating-CSCF, and Serving-CSCF depending on the role.
Also, the call session control node 141 may receive a call from any of the two communication terminals (e.g., UE-A and UE-B) To the originating
To the communication terminal UE-A requesting the group invitation to the arbitrary communication terminal UE-C via the communication terminal UE-C.
Furthermore, the call session control node 141 transmits a call request message (for example, an INVITE message) for a group call with the communication terminal UE-C from the originating
The
Next, the originating
In addition, the originating
The
In addition, the
On the other hand, the destination
FIG. 2 is a block diagram of a node device to which a group video call control technique according to the present invention is applicable, and includes a
2, the
3 is a block diagram of a group video call control apparatus according to the present invention and may include a
3, the
Next, the
To this end, the
When it is notified that the target terminal that has requested the group video call from the
Next, the terminal
Lastly, when the video call is connected between two communication terminals (calling terminal and called terminal) (when a video call is connected between two terminals before an arbitrary terminal is invited to a group video call) The calling terminal may provide a function of checking whether the called terminal is a supporting terminal or a non-supported terminal of the group video call through the search of the calling terminal, and providing the checking result to the calling terminal. When there is an originating application service node (origination TAS) responsible for a service and a terminating application service node (terminating TAS) responsible for a service for the terminating terminal, the destination application service node . Here, the check as to whether or not the terminal is a non-supported terminal can be performed by confirming the terminal information inserted in the feature tag of the contact header for the called terminal stored in the subscriber DB.
2, the
Meanwhile, in the embodiment of the present invention, when the target terminal that is invited to the group video call is a non-serving terminal (legacy terminal) of the group video call, blocking of the group call request transmitted to the target terminal is performed by the called application service node However, the present invention is not necessarily limited to this. By applying the configuration member and functions for blocking transmission of a group call request to a target terminal (non-serving terminal) to the call session control node (CSCF) side, It goes without saying that the call session control node may be designed to block the transmission of the group call request to the target terminal (the non-serving terminal).
Next, a series of processes for controlling the group video call in the network node according to the present invention will be described in detail in the hybrid mobile communication system having the above-described configuration.
4 is a flowchart illustrating a control procedure at a network node when a group invitation for a group video call is generated according to the present invention.
4, when a video call (group call or conference call) is connected between two communication terminals, for example, a calling terminal UE-A and a called terminal UE-B, It is checked whether the called terminal UE-B is a supporting terminal (for example, an LTE terminal) or a non-serving terminal (for example, a legacy terminal) of the group video call in the called application service node. To the terminal UE-A. Here, the check of the non-supporting terminal with respect to the called terminal can be performed by checking the terminal information inserted in the feature tag of the contact header for the called terminal stored in the subscriber DB .
Next, a communication terminal (calling terminal) UE-A serving as a clerk during a video call connection between the two communication terminals UE-A and UE-B is connected to an arbitrary communication terminal (for example, (E.g., a REFER message) to invite the communication terminal UE-C to the group video call. The communication terminal UE-C may invite the UE-C to the target terminal for the group video call. The invite message is transmitted to the originating
In response, the originating
Again, the originating
Then, the originating
The originating
As a result, in the receiving
FIG. 5 is a flowchart illustrating a main procedure for determining whether a group call request is transmitted when a target terminal received a group invitation according to the present invention is a non-serving terminal of a group video call.
5, the
Next, the
If it is determined in
If it is determined in
Then, the terminal
4, the called
Thereafter, the source
Finally, the originating
Meanwhile, in the exemplary embodiment of the present invention, a group video call service is provided by providing an originating application service node and a destination application service node, respectively. However, the present invention is not limited thereto, It is needless to say that it is also possible to design a node as a single integrated server (integrated application service node) to provide a group video call service.
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 the corresponding terminal requested for the group video call is a non-supported terminal (legacy terminal) of the group video call, the intelligent network node blocks the group call request transmitted to the corresponding terminal. Accordingly, the present invention can prevent unnecessary message traffic from being generated at the intelligent network node side, and can provide a group video call control model that effectively prevents unnecessary resource waste in the mobile communication environment from being caused.
The present invention including this technical configuration can be applied to a VoLTE (or LTE) mobile communication network, thereby realizing the enhancement of the reliability of group calls in VoLTE or LTE services and the prevention of resource waste.
302: request reception unit 304:
306: call request blocking unit 308: terminal status reporting unit
310:
Claims (11)
Blocking the transmission of the group call request to the target terminal when the terminal is the non-serving terminal
The group video call control method comprising:
The method comprises:
Checking whether the called terminal is a supporting terminal or a non-supported terminal of the group video call when a video call call to the calling terminal and the called terminal is connected before the checking process;
Generating a message indicating that the called terminal is a support terminal or a non-supported terminal and providing the generated message to the calling terminal
The group video call control method further comprising:
The method comprises:
And notifying the calling terminal that the target terminal is a non-serving terminal when the terminal is the non-serving terminal
The group video call control method further comprising:
The checking of the unsupported terminal comprises:
Is performed by checking the terminal information embedded in the feature tag of the contact header for the target terminal
Group video call control method.
Wherein the blocking of the group call request comprises:
Performed through an intelligent network node
Group video call control method.
Wherein the blocking of the group call request comprises:
(TAS) or call session control node (CSCF) in the intelligent network node
Group video call control method.
A request receiving unit for receiving a group invitation for a target terminal to which the group video call is desired;
A terminal management unit for checking whether the target terminal is a support terminal or a non-support terminal of the group video call through searching terminal information of the subscriber DB when the group invitation is received;
A call request blocking unit for blocking transmission of a group call request to the target terminal when the terminal is the non-
The group video call control device comprising:
And a terminal status reporting unit for generating a guidance message indicating that the target terminal is a non-serving terminal and transmitting the group video call to the requesting terminal when the terminal is the non-
The group video call control apparatus further comprising:
The terminal management unit,
It is checked whether the terminal is the support terminal or the non-support terminal by checking the terminal information inserted in the feature tag of the contact header for the target terminal stored in the subscriber DB
Group video call control device.
The apparatus comprises:
A check is made as to whether or not the called terminal is a supporting terminal or a non-supported terminal of the group video call when a calling video call is connected to the calling terminal and the called terminal before the group invitation is generated and the check result is provided to the calling terminal Lt; RTI ID =
The group video call control apparatus further comprising:
Wherein the counterpart terminal-
The called terminal checks whether the called terminal is a support terminal or a non-supported terminal by checking the terminal information inserted in the feature tag of the contact header for the called terminal
Group video call control device.
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