KR101765895B1 - Apparatus and Method for Providing Ring Back Tone Service, Server for Providing Ring Back Tone and Driving Method Thereof - Google Patents

Abstract

An embodiment of the present invention relates to an apparatus and method for providing a ring back tone service, a ring back tone server, and a method of driving the server. The RBT service providing apparatus according to the embodiment of the present invention performs a different function in the first group in order to provide a ring back tone to the first terminal in a video call attempt between the calling first terminal and the receiving second terminal A ringback tone server for performing a call set-up procedure by transmitting a plurality of first messages to the first terminal and a plurality of second messages constituting a second group as a response to the first message, ; And relaying the first and second terminal-to-terminal video call calls, receiving the first message from the ring back tone server for the call setup and transmitting the first message to the first terminal, And a communication network for receiving the message and providing the message to the ring back tone server.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring back tone service providing apparatus and method,

An embodiment of the present invention relates to an apparatus and method for providing a ring back tone service, a ring back tone server, and a method of driving the server. More particularly, the present invention relates to a ring back tone service for improving user convenience and network resource efficiency by shortening the time required for performing a call set-up procedure between a ring back tone server and a terminal providing video ring back tone and announcement A ring back tone server, and a method of driving the server.

The mobile communication system includes a first generation analog AMPS (Advanced Mobile Phone System) method, a second generation cellular and personal communication service (PCS) method, a third generation IMT-2000 (International Mobile Telecommunication 2000) It is evolving into fourth generation.

Here, the IMT-2000 is classified as a WCDMA (Wideband CDMA) system proposed by the synchronous CDMA 2000 1X, 3X and EV-DO system proposed by 3GPP2 as the main axis and the asynchronous WCDMA system proposed by 3GPP (Generation Partnership Project).

The CDMA-2000 system is based on the CDMA method for wireless access technology and mobile communication network related technology. Therefore, it has backward compatibility with the existing second generation communication network, IS-95 network, so that it can provide mobile communication services by using both the second and third generation communication networks. Also, it supports mobile IP (Mobile Internet Protocol) function similar to handoff of voice call and can provide roaming service using R-UIM (Removable User Identity Module) card. The wireless Internet service can be provided at 144 kbps (up to 307.2 kbps), which is much faster than the speeds of 14.4 kbps and 56 kbps, which were supported in the existing network. In particular, 1x EV-DO, a packet-dedicated network for high-speed packet transmission, can provide bidirectional high-speed data service at a transmission rate of up to 2.4 Mbps.

The WCDMA system uses the CDMA system as the radio access technology, but the mobile communication network technology is based on the GSM network technology. The WCDMA communication system adopts AMR (Adaptive Multi-Rate Vocoder) with a bit rate of 4.75 kbps to 12.2 kbps for speech coding and supports high mobility even when the user moves at a speed of about 100 km / h . In addition, since the frequency bandwidth is broadened to 5 MHz and the data transmission speed is 2 Mbps, it is suitable for high-speed data transmission and diversity according to the reverse call quality which can not be provided by the existing IS-95 and GSM methods So that the call and data transmission performance is good even in a region where the communication environment is poor.

In addition, as the mobile communication system evolves more and more, high speed data transmission becomes possible. In addition, as the compression technology of multimedia data including voice and image is developed, a video communication service is provided in a mobile communication network.

In order to provide a video call in IMT-2000 network, H.323 or H.324M, an international standard defined by ITU, should be implemented in the system. Currently, the video call service provided by the WCDMA network is circuit based on H.324M, and the video call service provided by the 1xEV-DO network is packet based on H.323.

In the case of the video communication service of the line method, a call path is supported between terminals attempting video communication through the mobile communication switching center. However, the mobile telecommunication switching center only supports the call only and does not provide various tones or announcements that occur when a calling terminal tries to make a call as in the case of a voice call. This is because the standard itself defined in the circuit-based video call uses the end-to-end protocol between the terminals.

Therefore, in the case of a line-type video call, the mobile communication switching center interworks with the MT & RU (Multimedia Termination & Relay Unit) to transmit the tone and announcement. As a result, the mobile communication switching center connects the call with the MT & RU until a response is received from the receiving terminal, and the MT & RU negotiates H.245 using the calling terminal and the 3G-324M (H.324M) And transmits the tone and image guidance broadcast to the originating terminal under control.

However, in the prior art, the MT & RU and the originating terminal transmit a request message for requesting a specific function to the originating terminal, while the originating terminal transmits a response message to the originating terminal in order to negotiate H.245, The MT & RU and the originating terminal take a lot of time to set up various functions for H.245 negotiation.

As a result, the waiting time of the user requesting the call becomes longer, which inconveniences the user. Further, since the call set up process is long, the time for occupying the network resources becomes longer, which has a problem in efficiently managing the network resources.

The embodiment of the present invention improves the H.245 negotiation procedure for performing call setup between a ring back tone server such as an MT & RU and a terminal, thereby reducing the time required for setting up a call between the ring back tone server and the terminal, A ring back tone server, and a method of driving the server.

The RBT service providing apparatus according to the embodiment of the present invention performs a different function in the first group in order to provide a ring back tone to the first terminal in a video call attempt between the calling first terminal and the receiving second terminal A ringback tone server for performing a call set-up procedure by transmitting a plurality of first messages to the first terminal and a plurality of second messages constituting a second group as a response to the first message, ; And relaying the first and second terminal-to-terminal video call calls, receiving the first message from the ring back tone server for the call setup and transmitting the first message to the first terminal, And a communication network for receiving the message and providing the message to the ring back tone server.

In addition, the ringback tone server according to an embodiment of the present invention includes a signal processing unit for processing a signal for providing a ringback tone to the first terminal when a video call is attempted between a calling first terminal and a receiving second terminal via a communication network; A plurality of first messages in a first group to perform a different function to provide the ringback tone to the first terminal and a plurality of second messages in a second group as a response to the first message, A traffic processing unit for performing a call set-up procedure; And a control unit for controlling the signal processing unit and the traffic processing unit.

A method for providing a ring back tone service according to an exemplary embodiment of the present invention includes the steps of: a calling side first terminal receiving a signal for a request for a video call to a receiving side second terminal and attempting a video call connection to the second terminal; Requesting transmission of a ring back tone to a ring back tone server for providing a ring back tone to the first terminal when the second terminal is waiting for a response; Wherein the ring back tone server performs a call setup process with the first terminal in response to a request for transmission of the ring back tone, ; Receiving a second plurality of messages constituting a second group from the first terminal via the communication network as a response to the plurality of first messages; Transmitting a plurality of third messages in the third group to the first terminal via the communication network; Receiving from the first terminal via the communication network a plurality of fourth messages constituting a fourth group as a response to the plurality of third messages; And transmitting the ring back tone to the first terminal after the ring back tone server completes a call setup procedure with the first terminal.

Also, a method of driving a ring back tone server according to an exemplary embodiment of the present invention is a method of operating a ring back tone server in a first group in order to provide a ringback tone to a first mobile terminal Transmitting a plurality of first messages that perform different functions to the first terminal via a communication network; Receiving from the first terminal via the communication network a plurality of second messages constituting a second group as a response to the first message; Transmitting a plurality of third messages in a third group to the first terminal via the communication network; Receiving from the first terminal via the communication network a plurality of fourth messages constituting a fourth group as a response to the third message; And transmitting a ring back tone to the first terminal upon completion of a call setup procedure with the first terminal.

According to an embodiment of the present invention, a plurality of messages performing a specific function are simultaneously transmitted during a call setup process between a ring back tone server and a terminal, and simultaneously receiving a plurality of response messages for a plurality of transmitted messages, The call setup processing time for providing the service may be shortened.

In addition, since the call setup processing time is shortened, it is possible to provide a video ring back tone and announcement to the user of the terminal as soon as possible, thereby enhancing convenience for the user.

Furthermore, for the call setup process, it is possible to efficiently manage the network resources by shortening the occupation of the network resources in the communication network, for example, by reducing the load.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a ring back tone service providing apparatus according to an embodiment of the present invention;
Fig. 2 is an exemplary diagram of the wireless communication network of Fig. 1,
3 is a diagram showing the structure of the ring back tone server of FIG. 1,
4 is a diagram illustrating a process of providing a ring back tone service of the ring back tone service providing apparatus of FIG.
FIG. 5 illustrates a call setup process between a first terminal and a ring back tone server in FIG. 4;
6 is a diagram illustrating a driving process of the ring back tone server of FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. 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.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

FIG. 1 is a diagram illustrating a structure of a RBT service providing apparatus according to an embodiment of the present invention. FIG. 2 is an exemplary diagram of a wireless communication network of FIG. 1, and FIG. 3 is a diagram illustrating a structure of a RBT server of FIG. 1 .

1 to 3, the RBT service providing apparatus according to the embodiment of the present invention includes a wired / wireless communication network 130 and a RBT server 140. In addition, the RBT service providing apparatus according to the embodiment of the present invention includes a first terminal 100, an access point (AP) 110, a GPS satellite 120, and a second terminal 150). ≪ / RTI >

The first terminal 100 and the second terminal 150 according to the embodiment of the present invention may be applied to various wired and wireless environments and may be classified into PDAs (GSM) phone, a Wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, a Mobile Broadband (MBS) System) phone, and the like. Here, the MBS phone represents terminals 100 and 150 to be used in a next generation system currently being discussed. Furthermore, the terminals 100 and 150 according to the embodiment of the present invention may further include a desktop computer, a laptop computer, and the like.

The terminals 100 and 150 may include a wireless communication module, a wireless LAN module, and a GPS module. As the wireless communication module is provided, the terminals 100 and 150 access the wired / wireless communication network 130 to perform voice communication and data communication with the other party. In addition, the terminals 100 and 150 can receive various web page data by accessing the wired / wireless communication network 130 via the AP 110, which is perceived as surrounding by the wireless LAN module. In addition, the terminals 100 and 150 may be classified into a GPS terminal and a non-GPS terminal depending on whether the GPS module is provided or not. When the terminal 100 or 150 includes the GPS module, the terminal 100 or 150 receives data provided through the GPS satellite 120.

The terminals 100 and 150 are connected to a wireless Internet protocol (WAP), an HTML based Internet protocol (MIE), a handheld device transport protocol (HDPT) , The i-mode of NTT DoKoMo, or a browser for a wireless Internet access of a specific communication company via the wired / wireless communication network 130. Among the Internet access protocols used by the terminals 100 and 150, the MIE uses m-HTML, which is a slightly modified version of HTML, and in the case of i-Mode, a language called compact HTML (c-HTML) Lt; / RTI >

In order to provide a faster wireless Internet, terminals 100 and 150 such as smart phones of recent years use a browser for wireless Internet access of a specific communication company such as Opera Mini for iPhone, 150), Wi-Fi (Wi-Fi) and WiBro (Local Area Network).

In addition, the terminals 100 and 150 according to the embodiment of the present invention can make a video call through the wired / wireless communication network 130. For this, the terminals 100 and 150 must support the H.263 video codec, G.723 audio codec, H.223 multiplexing protocol, and H.245 control protocol defined in H.324M.

Here, H.263 is a recommendation for compressing video data at a very low bit rate. Based on the existing Recommendation H.263, temporal redundancy through inter-frame prediction, spatial redundancy using DTC (Discrete Cosine Transform) is minimized And adopts a hybrid compression method. G.723 is a recommendation for compressing speech or audio signals at a low bit rate, compressing the audio signal frame by frame using the linear prediction analysis / synthesis method, and compressing it to 5.3 or 6.3 kbps as needed. However, the video codec and the audio codec used in the terminals 100 and 150 are not limited thereto. For example, MPEC-4 or H.263 may be used as the video codec, and AMR, G.711, G.729, G723 .1, and so on.

H.223 is a packet-based multiplexing protocol for low-rate multimedia communication. It provides a method to decompose or combine video data and audio data into multiple logical channels in a single packet with low latency and overhead.

H.245 is a protocol that defines the semantics and rules for procedures and various terminal information messages required for communication between the first mobile terminal 100 and the second mobile terminal 150 during communication. H.245 is a symmetric control protocol, which means that when initiating H.245 communication between each terminal 100, 150, the right to provide a solution in the event of a subscriber collision, 150 < / RTI > will be the master. This function, called master-slave determination (MSD), is used at the beginning of a session to identify the master and the slave.

In addition, H.245 provides capability exchange capability. Each of the terminals 100 and 150 has different functions based on the multiplexing and demultiplexing function of H.223 to support video and voice related codec, data sharing, and other optional functions. Therefore, H.245 negotiates these functions and provides the capability exchange function to distinguish features common to the terminals 100 and 150.

In addition, media and data flows are configured in the logical channel to support control of the flow, H.245 provides logical channel signal processing functions for logical channel open / close and parameter exchange operations, Furthermore, H.245 can additionally manage the H.223 Mux Table using logical channels.

The AP 110 includes a small base station such as a femto or pico base station, which is installed in a large number of buildings. Here, the femto or pico base station is classified according to the maximum number of the terminals 100 that can be connected to the small base station. Also, the AP 110 includes a short-range communication module for performing short-range communication such as Wi-Fi with the terminal 100. In the exemplary embodiment of the present invention, the short-range communication may include a radio frequency (RF) and ultra-wideband communication such as Bluetooth communication, zigbee communication, IrDA, UHF and VHF (UWB), and the like. Accordingly, the AP 110 can extract the location of the data packet, specify the best communication path to the extracted location, and forward the data packet to the data receiving device 160, for example, along the designated communication path. The AP 110 may share a plurality of lines in a general network environment and may include a router and a repeater.

The wired / wireless communication network 130 may include a wireless communication network such as a synchronous (CDMA) network, an asynchronous (WCDMA) network, a GSM network, and an LTE (Long Term Evolution) network. In the embodiment of the present invention, any communication network may be used as long as it can perform wireless communication with the terminals 100 and 150, so that the communication network is not particularly limited. Also, the wired / wireless communication network 130 according to an embodiment of the present invention may include a wired communication network such as a public switched telephone network (PSTN).

For example, the WCDMA network may include a NodeB 200, an RNC (Radio Network Controller) 210, an MSC 220, and an SGSN 250, as shown in FIG. Furthermore, the WCDMA network may further include a VLR (Visitors Location Register) 230 and a HLR (Home Location Register) 240. The RNC 210 relays voice or data calls between the Node B 200 and the MSC 220 or between the Node B 200 and the SGSN 250. Of course, the NodeB 200 and the RNC 210 in the WCDMA network can be replaced with a BTS (Base Station Transmission System) and a BSC (Base Station Controller), respectively, in the case of a CDMA network. The MME can be replaced with an evolved base station (e-NodeB) and a mobility management entity (MME) in an EPC (Evolved Packet Core) network. The MME is an integrated form of the RNC 210 and the SGSN 250 in the WCDMA network The RNC 210 and the SGSN 250 perform substantially the same functions.

The NodeB 200 is arranged for each cell and receives a call request signal from the first terminal 100 through a traffic channel among the signal channels and transmits the received call request signal RNC 210 or the terminals 100 and 150 located in a cell region to which the mobile terminal 100 belongs. The NodeB 200 is a network endpoint device directly connected to the terminals 100 and 150 and performs baseband signal processing, wired / wireless conversion, and wireless signal transmission / reception. For example, the NodeB 200 determines the location of the receiving second terminal 150 in its cell area, and then transmits a call request signal transmitted from the MSC 220 through the RNC 210.

In addition, the NodeB 200 can obtain information such as the location and latitude of the NodeB 200 using signals from the GPS satellites 120, and transmits the position information of the NodeB 200 to the Node B 200 through the system parameter message of the forward link paging channel To the terminals (100, 150). The terminals 100 and 150 may register new location information by calculating the movement distance of the terminals 100 and 150 using the location information of the NodeB 200 of the cell to which the terminals 100 and 150 belong. The location registration is a processing procedure for notifying the MSC 220 of a location, a state, an identifier, a slot period, and other characteristics of the terminals 100 and 150 through the NodeB 200, , 150) to effectively call the terminals (100, 150). The location registration of the terminals 100 and 150 may be performed when the terminals 100 and 150 move between the MSCs 220 when the terminals 100 and 150 are powered on or off, (100, 150) is changed.

The RNC 210 controls the NodeB 200 and allocates and releases radio channels for the terminals 100 and 150, transmission output control of the terminals 100 and 150 and the NodeB 200, soft handoff Transcoding and vocoding, GPS clock distribution, and operation and maintenance functions for the NodeB 200. The NodeB 200 may be configured to perform the following functions: The RNC 210 also transmits the subscriber information of the terminals 100 and 150 to the MSC 220. For example, the RNC 210 transmits a call request signal transmitted from the first terminal 100 through the NodeB 200 to the MSC 220. In contrast, the RNC 210 transmits a call response transmitted from the MSC 220 And transmits the signal to the first terminal 100 through the NodeB 200.

The MSC 220 performs base and supplementary service processing, subscriber's reception and origination call processing, location registration and handoff procedure processing, and interworking with other networks. For example, the MSC 220 of the IS-95 / A / B / C system includes an Access Switching Subsystem (ASS) functioning as a distributed call processing function, an Interconnection Network Subsystem (INS) A Central Control Subsystem (CCS) for centralizing the operation and maintenance, and a Location Registration Subsystem (LRS) for storing and managing information on the mobile subscriber. An MS (Asynchronous Transfer Mode) switch may be included in the MSC 220 for the third and fourth generations. The ATM switch increases the transmission rate and the efficiency of line use by packet transmission per cell. The MSC 220 temporarily stores the subscriber information of the terminals 100 and 150 in the VLR 230 when the location registration of the terminals 100 and 150 is performed through the NodeB 200 and the RNC 210, And requests the location registration of the terminals 100 and 150 to the HLR 240.

In addition, the MSC 220 interlocks with the ringback tone server 140 and performs a video call call processing to the second terminal 150 when the first terminal 100 requests a video call to the second terminal 150, (ISDN User Part) IAM (Initial Address Message) message to the RBT server 140 while the mobile terminal 150 is waiting for a response and transmits the message to the RBT server 140 via the first terminal 100, A ringback tone and an announcement (hereinafter, referred to as a multimedia ringback tone). That is, when the MSC 220 receives the video call request from the first terminal 100, the MSC 220 additionally determines whether the second terminal 150 is subscribed to the Multimedia Ring Back Tone (MRBT) service, If the subscriber is not subscribed to the RBT service, the subscriber may be able to transmit the basic multimedia ringback tone specified by the subscriber through the RBT server 140 in advance. Here, the multimedia ring back tone represents voice, text, pictures, moving pictures and the like, rather than voice type ringback tones such as music and voices, but the multimedia ring back tone is not particularly limited to the multimedia ring back tone in the embodiment of the present invention.

Although not shown separately, the MSC 220 according to an embodiment of the present invention may further be interworked with 3G-IP (Third Generation Intelligent Peripheral). Accordingly, when the second terminal 150 is subscribed to the multimedia RBT service when the first terminal 100 requests a video call, the MSC 220 transmits a subscriber-specified multimedia ringback tone to the 3G- And performs a video call call processing to the second terminal 150. When there is a response from the second terminal 150, the call is released to the 3G-IP and the call is connected to the second terminal 150 And performs a function of supporting a video call between the calling-side first terminal 100 and the receiving-side second terminal 150.

The VLR 230 receives and stores location information of a visited subscriber from which the location information registration is performed, from the MSC 220. The VLR 230 temporarily stores the subscriber information and notifies the HLR 240 when the terminals 100 and 150 perform location information registration and informs the HLR 240 of the terminal identification number of the terminals 100 and 150 from the HLR 240. [ The terminal identification number, and the service information, and performs functions such as position control, call processing, and external operation processing of the terminals 100 and 150.

The HLR 240 receives location information of the terminals 100 and 150 from the VLR 230 and performs functions such as registration recognition, registration deletion, and location confirmation. The HLR 240 also stores profile information of the terminals 100 and 150 waiting for a call. Here, the profile information refers to MIN (Mobile Identification Number), ESN (Electronic Serial Number), or subscription mobile communication service information of the terminals 100 and 150.

SGSN 250 may include a GGSN. The SGSN 250 performs session management, authentication and billing functions for handling mobility management of the terminals 100 and 150, outgoing / incoming call processing procedures and transmission / reception of packet data for GPRS (General Packet Radio Service) . It also has routing function of packet data.

The ring back tone server 140 proceeds to negotiate the H.245 with the first terminal 100 when the second terminal 150 is waiting for a response to the video call of the first terminal 100. When the negotiation is completed, And transmits the multimedia ring back tone to the mobile terminal 100. [

3, the RBT server 140 includes a signal processing unit 300, a traffic processing unit 310, and a control unit 320. The traffic processing unit 310 includes a multi- A message transmission unit 311, and a multi-message reception unit 313. Here, the signal processing unit 300 performs call processing with the MSC 220 and can transmit and receive various messages such as the IAM of the ISUP protocol standard with the MSC 220. At this time, the MEGACO Media Gateway Control protocol specifications may also be used. The traffic processing unit 310 performs a function of sending 3G-324M (H.324M) setting and multimedia ringback tone to the first terminal 100 and transmits a multi-message transmission unit 311 to shorten the time for call setup. And receives a plurality of response messages for the transmitted message through the multiple message receiving unit 313. [0064] The control unit 320 may control all operations of the ring back tone server 140 and monitor the failure.

The traffic processing unit 310 performs procedures such as Termination Capability Set (TCS), Master-Slave Determination (MSD), Mux Entry Set (MES), and Open Logical Channel (OLC) with the first terminal 100 for call setup processing Can be performed. As described above, the TCS is a procedure for exchanging the allowable range of voice and image, and the MSD is a procedure for setting up the master and the slave. The MES is a process of opening a logical channel for transmitting voice and image in one session, and the OLC is a procedure for managing a H.223 mux table using a logical channel. The traffic processor 310 may use the H.245 protocol, which is a sub protocol of H.324M, to perform the call setup procedure.

Furthermore, the traffic processing unit 310 according to the embodiment of the present invention may further include a part or all of a multi-message generating unit (not shown) and a multi-message checking unit (not shown). Of course, the multi-message checking unit may not be included in the traffic processing unit 310 but may be included in the control unit 320. [ Here, the multi-message generation unit generates a multi-message for performing a call setup procedure and provides the generated multi-message to the multi-message transmission unit 311, If there is no message received through the multi-message receiving unit 313 even after a predetermined time has elapsed for a plurality of messages transmitted through the multi-message transmitting unit 311, The multi-message generation unit 311 and the multi-message generation unit 311 may be controlled.

FIG. 4 is a diagram illustrating a process of providing a RBT service in the RBT service providing apparatus of FIG. 1, and FIG. 5 is a diagram illustrating a call setup process between a first terminal and a RBT server in FIG.

Referring to FIG. 4 together with FIGS. 1 and 2, according to an embodiment of the present invention, the first terminal 100 requests the MSC 220 in the wired / wireless communication network 130 to communicate with the second terminal 150 S401).

The MSC 220 then attempts to establish a call connection to the second terminal 150 at the request of the first terminal 100 (S403). The second terminal 150 transmits a paging message to the second terminal 150 to check whether the second terminal 150 is in a callable state.

If there is no response from the second terminal 150, the MSC 220 requests the RBT server 140 to transmit the multimedia RBT (S405). At this time, the MSC 220 can use a message such as an IAM of the ISUP protocol standard to request the transmission of the multimedia ring backtone.

For example, when the RBT server 140 receives a message from the MSC 220, the RBT server 140 performs a call setup procedure to transmit the multimedia RBT to the first terminal 100 .

To this end, the ring back tone server 140 first transmits a plurality of first messages, which perform different functions, to the first terminal 100 (S407), and transmits a plurality of second Message from the first terminal 100 (S409). Here, the plurality of first messages transmitted from the RBT server 140 to the first MS 100 are, for example, a TCS message and an MSD message, and the plurality of second messages include a response message for the transmitted TCS message and MSC message Lt; / RTI >

Also, the ring back tone server 140 may transmit a plurality of third messages for performing different functions to the first terminal 100 (S411) and receive a plurality of fourth messages as a response thereto (S413 ). At this time, the plurality of third messages transmitted from the RBT server 140 to the first terminal 100 may be MES messages and OLC messages, and the plurality of fourth messages may be MES messages and response messages for LOC messages.

The RBT server 140 completes the call setup procedure with the first terminal 100 and the RBT server 140 then transmits the multimedia RBT to the first terminal 100 ).

5, the call setup process between the first terminal 110 and the ring back tone server 140 will be described in more detail. The ring back tone server 140 transmits the call setup request to the first terminal 100 TCS message, and transmits an MSD message to the TCS message without waiting for a response to the TCS message (S501).

In step S503, the RBT server 140 receives a response message for the TCS message and the MSD message from the first terminal 100, respectively.

When this process is completed, the ring back tone server 140 transmits an MES message, and then transmits an OLC message of an unauthorized voice and image to the MES message (S505).

Next, the ring back tone server 140 receives a response message for the MES message from the first terminal 100 and receives a response message for the voice and picture OLC message (S507).

Further, the ringback tone server 140 may transmit a plurality of first messages and may receive a plurality of first messages from the first terminal 100 before receiving the plurality of third messages, (S511).

In this case, the ringback tone server 140 will transmit a plurality of response messages for a plurality of messages having the same function as the plurality of first messages (S513).

 The ring back tone server 140 also transmits a plurality of third messages and receives a plurality of messages having the same function as the plurality of third messages from the first terminal 100 before receiving the plurality of fourth messages (S515), and a plurality of response messages corresponding thereto may be transmitted (S517).

In this process, the RBT server 140 according to the embodiment of the present invention transmits a plurality of messages successively and sequentially receives a plurality of messages for the transmitted messages, Although it is possible to ignore the priority between the MSD and the MES and the OLC, it may be desirable to perform the MES and OLC procedures after the completion of the TCS and MSD to smooth the call setup. Therefore, the embodiment of the present invention is not particularly limited to the above-mentioned execution procedure.

In addition, the RBT server 140 according to the embodiment of the present invention includes a TCS, an MSD, a TCS, and an MSD, which form one group, to perform TCS, MSD, MES, and OLC functions, , MSD, and MES, or generates and transmits four first messages including CS, MSD, MES, and OLC, and receives a response message to the four first messages. Therefore, The number of the first messages or the response messages therefor is not particularly limited as long as they are generated and transmitted.

In addition, the RBT server 140 according to the embodiment of the present invention can perform the above four functions through two or three functions. In this case, the RBT server 140 transmits two or three first messages, And may receive a response message. Therefore, in the embodiment of the present invention, such function is not limited to four functions.

6 is a diagram showing a driving method of the ring back tone server of FIG.

6, a ring back tone server 140 according to an exemplary embodiment of the present invention transmits a multimedia ring back tone to the calling terminal 100 in order to set up a call with the calling terminal 100 And transmits the independent TCS message and the MSD message to the first terminal 100 (S601).

Then, the RBT server 140 receives the transmitted TCS message and the response message for the MSD message (S603).

In addition, the RBT server 140 according to the embodiment of the present invention analyzes the received TCS message and MSC message to determine an error, and when an error occurs, the TCS message and the MSC message are retransmitted and a response is received You can do it. Of course, this process can be performed even when a response message is not received.

Through this process, the RBT server 140 completes the procedure for exchanging the allowable range of voice and image with the first terminal 100 and the procedure for determining the master and the slave.

When the TCS and MSD procedures are completed, the RBT server 140 transmits independent MES and OLC messages to the first terminal 100 to perform the next call setup procedure (S605).

Then, a response message for the MES and OLC messages is received from the first terminal 100 (S607).

At this time, the RBT server 140 may analyze each received MES and OLC message to determine an error, and if an error occurs, the MES and OLC messages may be retransmitted and a response may be further received. Of course, this process can be performed even when a response message is not received.

Accordingly, the RBT server 140 forms a logical channel for transmitting voice and image, and manages the mux table using the logical channel.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that a component can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

The embodiments of the present invention are applicable to a ring back tone service providing apparatus and method, a ring back tone server, and a driving method of the server. According to an embodiment of the present invention, It is possible to shorten the call setup processing time for providing the video RBT service by simultaneously transmitting a plurality of messages and simultaneously receiving a plurality of response messages for the plurality of transmitted messages. In addition, since the call setup processing time is shortened, it is possible to provide a video ring back tone and announcement to the user of the terminal as soon as possible, thereby enhancing convenience for the user. Furthermore, for the call setup process, it is possible to efficiently manage the network resources by shortening the occupation of the network resources in the communication network, for example, by reducing the load.

100: first terminal 110: access point
120: GPS satellite 130: wired / wireless communication network
140: ring back tone server 150: second terminal
200: NodeB 210: RNC
220: MSC 230: VLR
240: HLR 250: SGSN
300: signal processor 310: traffic processor
311: Multi-message transmission unit 313: Multi-message reception unit
320:

Claims (19)

delete delete A signal processing unit for processing a signal for providing a ring back tone to the first terminal when a video call attempt is made between a calling side first terminal and a receiving side second terminal via a communication network;
Performing a call set-up procedure with the first terminal to provide the RBT, and transmitting a plurality of first messages that perform different functions in connection with the call setup procedure during the call setup procedure, Grouping them into a first group and concurrently transmitting them to the first terminal and concurrently receiving a plurality of second messages as a response to the first message from the first terminal in a grouped form into a second group, A traffic processing unit to perform the processing; And
And a control unit for controlling the signal processing unit and the traffic processing unit
The ring back tone server comprising: The method of claim 3,
Wherein the traffic processing unit includes a multi-message transmitting unit and a multi-message receiving unit, the multi-message transmitting unit transmits the plurality of first messages, and the multi-message receiving unit receives the plurality of second messages. Backtone server. 5. The method of claim 4,
Wherein the traffic processing unit further comprises a multi-message checking unit,
Wherein the multi-message checking unit transmits the plurality of first messages to the multi-message transmitting unit so as to retransmit the plurality of first messages when the plurality of second messages are not received or an error occurs in the plurality of second messages Wherein the ring back tone server controls the ring back tone server. delete delete delete delete delete delete Wherein the first terminal of the calling side performs a plurality of functions to perform a different function in connection with a call setup procedure with the first terminal to provide a ringback tone to the first terminal when a video call is made to the receiving second mobile terminal 1 messages into a first group and simultaneously transmitting the grouped messages to the first terminal;
Receiving a second plurality of messages from the first terminal simultaneously in a second grouping in response to the first message;
Grouping a plurality of third messages, which perform different functions in connection with the call setup procedure, into a third group and simultaneously transmitting the third messages to the first terminal;
Receiving a plurality of fourth messages as a response to the third message from the first terminal simultaneously in a grouped form into a fourth group; And
And transmitting a ring back tone to the first terminal upon completion of a call setup procedure with the first terminal,
The ring back tone server comprising: 13. The method of claim 12,
Wherein the receiving of the plurality of second messages from the first terminal comprises:
And analyzing the second message to retransmit the plurality of first messages to the first terminal via a mobile communication network when an error occurs. 13. The method of claim 12,
Wherein the receiving the plurality of fourth messages from the first terminal comprises:
And analyzing the fourth message to resend the plurality of third messages to the first terminal via the mobile communication network when an error occurs. 13. The method of claim 12,
The call setup procedure with the first terminal includes a procedure of a termination capability set (TCS), a master-slave determination (MSD), a mux entry set (MES), and an open logical channel (OLC)
Wherein the plurality of first messages perform the TCS and the MSD procedure, and the plurality of third messages perform the MES and the OLC procedure. 13. The method of claim 12,
Receiving from the first terminal a plurality of messages performing the same function as the plurality of first messages between transmitting the plurality of first messages and receiving the plurality of second messages, Further comprising the steps of: 17. The method of claim 16,
Wherein the step of receiving, from the first terminal, a plurality of messages that perform the same function as the plurality of first messages,
And transmitting a plurality of response messages for the received plurality of messages to the first terminal. 13. The method of claim 12,
Receiving from the first terminal a plurality of messages performing the same function as the plurality of third messages between transmitting the plurality of third messages and receiving the plurality of fourth messages, Further comprising the steps of: 19. The method of claim 18,
The step of receiving from the first terminal a plurality of messages, which perform the same function as the plurality of third messages,
And transmitting a plurality of response messages for the received plurality of messages to the first terminal.

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