KR101281190B1 - Method for termination service of sip image terminal - Google Patents

Abstract

The present invention discloses an incoming service method of a SIP video terminal for an incoming video terminal for which location registration has not been performed. That is, a) requesting, by an MSS (Multimedia Session Control System), an IP Multimedia Subscriber Register (IMSR) for location information of the called video terminal according to a call connection request from the calling video terminal to the called video terminal; b) the IMSR notifying the MSS of the location unregistered state of the called video terminal, and identifying a current position of the called video terminal in association with a home location register (HLR); c) requesting registration of the location from the incoming video terminal by the home location register (HLR) and re-registering the location in the MSS; thereby, implicitly performing location registration for the incoming video terminal to receive a SIP video call. This implementation can increase the convenience of the user, and can provide uninterrupted service at the level felt by the SIP videophone subscriber.

SIP, video call, location registration

Description

Incoming service method of SPI video terminal {METHOD FOR TERMINATION SERVICE OF SIP IMAGE TERMINAL}

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 and 2 are a flow chart for explaining the incoming service method of the SIP video terminal according to an embodiment of the present invention.

Description of the Related Art [0002]

100: outgoing video terminal

200: Multimedia Session Control System (MSS)

300: IP Multimedia Subscriber Register

400: Home Location Register (HLR)

500: incoming video terminal

The present invention relates to an incoming service method of a SIP video terminal, and more particularly, when a SIP-based incoming video terminal does not normally register a location, the system implicitly performs a location registration for the incoming video terminal in a SIP video telephone. The present invention relates to an incoming service method of a SIP video terminal that allows incoming calls.

Session Initiation Protocol (SIP) is a text-based protocol such as Hypertext Transfer Protocol (HTTP). It is currently used for call set-up in various fields including Internet telephony. It provides a function to enable voice call and multimedia service anytime, anywhere by using URI Uniform Resource Identifier (URI).

As such, SIP registers a user's current location to change the point at which the user connects to the communication network or connects the session by a physical contact point corresponding to the same identifier, that is, the SIP identifier, even when using another service terminal. Support. In more detail, the service terminal of the user transmits a SIP location registration request message including physical contact point information corresponding to the user's SIP identifier in a contact header to the SIP server, and the SIP server performs the user's SIP location registration. Stores the information contained in the header. Then, when the service request message is received with the user's SIP identifier, the service is transferred to the corresponding physical contact point to support the user's movement.

Meanwhile, the current SIP video telephone sends a location registration request message (REGISTER) to the MSS (Multimedia Session Control System), and then proceeds with the call using the session start request message (INVITE). However, when an incoming call comes in when the location is not registered due to packet loss in the radio range or the radio, incoming call failure occurs. In this case, conventionally, inconvenience occurs in that the terminal needs to manually perform location registration (REGISTER) or reset the power of the terminal.

The present invention was created to solve the problems inherent in the prior art as described above, and an object of the present invention is to register a location for the incoming video terminal in the system when the SIP-based incoming video terminal is not normally registered. To implicitly perform SIP video call reception. In response to a call connection request from the calling video terminal to the called video terminal, an IMSR is transmitted by the multimedia session control system (MSS). Requesting an IP Multimedia Subscriber Register; The IMSR notifying the MSS of the location unregistered state of the called video terminal, and identifying a current position of the called video terminal in association with a home location register (HLR); The home location register (HLR) requesting a location registration to the incoming video terminal to force registration of the location in the MSS; thereby increasing the convenience of the user, and further, An object of the present invention is to provide an incoming service method of a SIP video terminal that provides a service without interruption.

In accordance with an aspect of the present invention to achieve the above object, there is provided a method for the incoming video service of the SIP video terminal to the incoming video terminal not registered location: This method, a) MSS (Multimedia Session Control System) In response to a call connection request from the calling video terminal with the called video terminal, requesting location information of the called video terminal to an IP Multimedia Subscriber Register (IMSR); b) the IMSR notifying the MSS of the location unregistered state of the called video terminal, and identifying a current position of the called video terminal in association with a home location register (HLR); and c) requesting a location registration from the called video terminal to re-register the location with the MSS by the home location register (HLR).

In the above configuration, the method further comprises: d) the MSS performing a video call connection between the location-registered incoming video terminal and the originating video terminal.

In the above configuration, the step a) may include: a-1) sending, by the calling video terminal, a session start request message (INVITE) for the called video terminal to the MSS; And a-2) the MSS querying the called subscriber and sending a subscriber location information request message (LIR) for the called video terminal to the IMSR.

In the above configuration, the step b) may include: b-1) the IMSR transmitting a subscriber location response message (LIA) indicating the location unregistered state of the called video terminal to the MSS; And b-2) the IMSR requesting home location register (HLR) location information of the called video terminal and receiving a response message accordingly.

In the above configuration, step c) includes: c-1) requesting that the home location register (HLR) perform location registration of the called video terminal to a corresponding switch or a Packet Data Serving Node (PDSN) in which the called video terminal is located; Sending a message INVOKE; c-2) requesting, by the called video terminal, to register a location with the MSS according to the request message (INVOKE).

In the above configuration, step d) includes: d-1) the MSS transmitting a server assignment request message (SAR) to the IMSR to the IMSR; d-2) the IMSR transmitting a server assignment response message (SAA) according to the server assignment request message (SAR) to the MSS; d-3) the MSS transmitting a response message (200 OK) and a session start request message (INVITE) according to a location registration request to the called video terminal; D-4) receiving, by the MSS, a response message (200 OK) for a session start request message (INVITE) from the called video terminal, and transmitting a response message for a session start request message to the calling video terminal; Characterized in that it comprises a.

According to yet another aspect of the present invention, there is provided a method of receiving an incoming video terminal of a SIP video terminal for an unregistered incoming video terminal, the method comprising: a) an originating video terminal in a multimedia session control system (MSS); Sending a session start request message (INVITE) for the request; b) the MSS querying the called subscriber and sending a subscriber location information request (LIR) message to the called video terminal to an IP Multimedia Subscriber Register (IMSR); c) the IMSR sending a subscriber location response message (LIA) to the MSS indicating a location unregistered state of the called video terminal; d) the IMSR requesting a home location register (HLR) location information of the called video terminal and receiving a response message accordingly; e) the home location register (HLR) sending a request message (INVOKE) to perform location registration of the called video terminal to a corresponding switch or a Packet Data Serving Node (PDSN) in which the called video terminal is located; And f) the terminating video terminal requesting location registration with the MSS according to the request message (INVOKE); g) the MSS sending a server assignment request message (SAR) to the IMSR for the called video terminal; h) the IMSR sending a server assignment response message (SAA) according to the server assignment request message (SAR) to the MSS; i) the MSS transmitting a response message (200 OK) and a session start request message (INVITE) according to a location registration request to the called video terminal; And j) the MSS receiving a response message (200 OK) for a session start request message (INVITE) from the called video terminal, and transmitting a response message for the session start request message to the calling video terminal. Characterized in that.

(Example)

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

1 and 2 show a schematic flowchart for explaining an incoming service method of a SIP video terminal according to an embodiment of the present invention.

In the SIP video terminal incoming service according to an embodiment of the present invention, when the incoming video terminal receives an incoming call from the originating video terminal in a state where the incoming video terminal is not registered in the wireless shadow area or due to packet loss in the wireless, the incoming video terminal receives the incoming video. Retry registration of the terminal and proceed with video call normally.

To this end, the incoming service method of the SIP video terminal according to an embodiment of the present invention, as shown in Figure 1, the step of performing the location registration by the calling video terminal 100 (S100); Requesting location information of the incoming video terminal 500 (S200); Determining a current position of the called image terminal 500 according to the unregistered position of the called image terminal 500 (S300); Retrying to register the location of the incoming image terminal (500) (S400); And connecting a video call between the calling video terminal 100 and the called video terminal 500.

That is, the detailed operation of each step described above with reference to FIG. 2 is as follows.

First, in the case where the calling video terminal 100 registers a location (S100), the calling video terminal 100 requests a registration (REGISTER) from the MSS (Multimedia Session Control System) 200 (S110). Upon receiving this, the MSS 200 transmits a server assignment request message (SAR) to the incoming video terminal 500 to the IP Multimedia Subscriber Register (IMSR) 300 (S120). Thereafter, the IMSR 300 transmits a server assignment response message (SAA) corresponding to the server assignment request message SAR to the MSS 200 (S130). Thereafter, the MSS 200 receiving the server assignment response message (SAA) transmits a response message (200 OK) corresponding to the REGISTER request of the calling image terminal 100 to the calling image terminal 100. Complete the location registration step (S140).

Next, in the case of requesting location information of the called video terminal 500 (S200), the calling video terminal 100 transmits a session start request message (INVITE) for the called video terminal 500 to the MSS 200. (S210). Upon receiving this, the MSS 200 queries the local DB, that is, the called subscriber (S220), and transmits a subscriber location information request message (LIR, Location Information Request) for the called image terminal 500 to the IMSR 300. (S230).

Then, in the case of determining the current position of the called video terminal 500 according to the unregistered location of the called video terminal 500 (S300), the IMSR 300 requests the subscriber location information received through the step 'S230'. According to the message LIR, a subscriber location response message (LIA, Location Information Answer) indicating the location unregistered state of the incoming video terminal 500 is transmitted to the MSS 200 (S310). Then, the IMSR 300 requests the current location information of the incoming video terminal 500 from the IMSR 300 to the home location register HLR (S320), and receives a response message accordingly (S330).

Then, in the case of retrying the location registration of the incoming video terminal 500 (S400), the home location register (HLR) requests the location registration from the incoming video terminal 500 to the MSS 200. In order to re-register the location, the home location register (HLR) 400 sends a request message (INVOKE) to perform registration of the location of the called video terminal to a corresponding switch or a packet data serving node (PDSN) in which the called video terminal is located. In step S410, the incoming video terminal 500 requests a location registration (REGISTER) from the MSS 200 according to the request message INVOKE (S420).

Finally, in the case of the step 500 of connecting the video call between the calling video terminal 100 and the called video terminal 500, the MSS 200 determines the location-registered called video terminal 500 and the calling video terminal 100. In order to connect a video call to the video call, the MSS 200 sends a server allocation request message (SAR) to the IMSR 300 for the called video terminal 500 according to the location registration request of the called video terminal 500. It transmits (S510). Then, the IMSR 300 transmits a server assignment response message (SAA, Sever Assignment Answer) according to the server assignment request message SAR to the MSS 200 (S520). The response message 200 OK according to the location registration request of the called image terminal 500 is transmitted to notify that the location registration of the called image terminal 500 is completed (S530). Thereafter, the MSS 200 transmits a session start request message INVITE to the called video terminal 500 in order to connect a video call between the calling video terminal 100 and the called video terminal 500 (S540). The incoming video terminal 500 receives the response message (200 OK) for the session start request message (INVITE) to the MSS 200, and the MSS 200 receiving the received video is sent from the step 'S210'. By sending a response message to the originating video terminal 100 in response to the session start request message INVITE of the terminal 100, the video call between the originating video terminal 100 and the called video terminal 500 is connected.

As can be seen from the above, the incoming service method of a SIP video terminal according to the present invention implicitly performs a location registration for the incoming video terminal in the system when the SIP-based incoming video terminal is not normally registered in the SIP image It is possible to increase the convenience of the customer by implementing the incoming call, and also provide uninterrupted service at the level felt by the SIP video subscriber.

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

Claims (7)

In the incoming service method of the SIP video terminal to the incoming video terminal is not registered in the location, a) requesting, by a multimedia session control system (MSS), a location information of the called video terminal to an IP Multimedia Subscriber Register (IMSR) according to a call connection request from the calling video terminal to the called video terminal; b) the IMSR notifying the MSS of the location unregistered state of the called video terminal, and identifying a current position of the called video terminal in association with a home location register (HLR); and c) requesting a location registration from the called video terminal to re-register the location with the MSS by the home location register (HLR). The method of claim 1, wherein the method is d) the MSS performing a video call connection between the location-registered called video terminal and the calling video terminal. According to claim 1, wherein the step a), a-1) sending, by the calling video terminal, a session start request message (INVITE) for the called video terminal to the MSS; And a-2) the MSS querying the called subscriber and sending a subscriber location information request message (LIR) to the IMSR to the IMSR; Service method. The method of claim 3, wherein b), b-1) the IMSR sending a subscriber location response message (LIA) to the MSS indicating a location unregistered state of the called video terminal; And b-2) requesting, by the IMSR, a location information of the called video terminal to a home location register (HLR) and receiving a response message according to the IMSR. The method of claim 4, wherein step c) c-1) the home location register (HLR) sending a request message (INVOKE) to perform location registration of the called video terminal to a corresponding switch or a Packet Data Serving Node (PDSN) in which the called video terminal is located; c-2) requesting, by the called video terminal, to register a location with the MSS according to the request message (INVOKE). The method of claim 2 or 4, wherein the d) step, d-1) transmitting, by the MSS, a server assignment request message (SAR) to the IMSR for the called video terminal; d-2) the IMSR transmitting a server assignment response message (SAA) according to the server assignment request message (SAR) to the MSS; d-3) the MSS transmitting a response message (200 OK) and a session start request message (INVITE) according to a location registration request to the called video terminal; And d-4) receiving, by the MSS, a response message (200 OK) for a session start request message (INVITE) from the called video terminal, and transmitting a response message for a session start request message to the calling video terminal; Incoming service method of a SIP video terminal comprising a. In the incoming service method of the SIP video terminal to the incoming video terminal is not registered in the location, a) sending, by the calling video terminal, a session start request message (INVITE) for the called video terminal to a multimedia session control system (MSS); b) the MSS querying the called subscriber and sending a subscriber location information request (LIR) message to the called video terminal to an IP Multimedia Subscriber Register (IMSR); c) the IMSR sending a subscriber location response message (LIA) to the MSS indicating a location unregistered state of the called video terminal; d) the IMSR requesting a home location register (HLR) location information of the called video terminal and receiving a response message accordingly; e) the home location register (HLR) sending a request message (INVOKE) to perform location registration of the called video terminal to a corresponding switch or a Packet Data Serving Node (PDSN) in which the called video terminal is located; And f) requesting, by the called video terminal, to register a location with the MSS according to the request message (INVOKE); g) the MSS sending a server assignment request message (SAR) to the IMSR for the called video terminal; h) the IMSR sending a server assignment response message (SAA) according to the server assignment request message (SAR) to the MSS; i) the MSS transmitting a response message (200 OK) and a session start request message (INVITE) according to a location registration request to the called video terminal; And j) the MSS receiving a response message (200 OK) for a session start request message (INVITE) from the called video terminal and transmitting a response message for a session start request message to the calling video terminal; Incoming service method of a SIP video terminal, characterized in that.

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