KR100631597B1 - Streaming device and method for mobile terminal network handover - Google Patents

Abstract

According to the present invention, the mobile terminal continues to receive the streaming service at the optimum data transmission rate even when the mobile handovers the network during the streaming service. The event unit outputs an event signal when it is determined that the network handover is performed by analyzing a signal applied from the mobile terminal controller. ; A range header unit configured to detect, store, and output the remaining streaming play running time when the event occurs during the streaming service; An epitaxial unit which detects an optimum transmission rate of a connected network and records and outputs the epitaxial packet when a handover event occurs during a streaming service; And a controller for generating an event signal, recording the remaining play time of the streaming data in the range header, and controlling and monitoring the optimal transmission rate in the epi when the handover occurs. do.

Description

Streaming apparatus and method for mobile terminal network handover {METHODS AND A APPARATUS OF STREAMING FILE DATA WITH NETWORK HAND-OVER FOR MOBILE PHONE}

1 is a functional configuration diagram of a general mobile communication system,

2 is a flow chart of a mobile terminal streaming method according to the prior art;

3 is an explanatory diagram of a network handover occurrence state of a mobile terminal of the present invention;

4 is a functional block diagram of a portable terminal network handover streaming device of the present invention;

5 is a flowchart illustrating a network handover streaming method of a mobile terminal of the present invention;

6 is a flowchart illustrating a network handover streaming method of the present invention server;

7 is a diagram illustrating a network handover epi packet information configuration of a portable terminal of the present invention.

          ** Explanation of symbols on the main parts of the drawing **

100: portable terminal 110: second generation mobile communication system network

115: second generation system service area 120: third generation mobile communication system network

125: third generation system service area 130: public network

140: server 200: wireless unit 210: control unit

220: memory unit 230: epi skin 240: motion sickness

250: range header unit 260: event unit

According to the present invention, when a mobile terminal is handed over to a network having a different transmission rate while receiving a streaming data service through a network to which the mobile terminal is connected, the server sets the optimum data rate to continue the streaming service without error. The present invention relates to a streaming device and a method for handover of a mobile terminal network handover such that a streaming service is continued at an optimal data transmission rate in a connected network using an epi format range header and an AP packet.

The mobile terminal (MS) moves freely in the service area formed by the base station (BS) of the registered mobile communication system, and controls and monitors the mobile switching station (MSC). By wirelessly connecting and communicating with the other party through the communication path set by the individual, it is an advanced wireless communication device that is directly carried by an individual and communicates with the other party anytime and anywhere.

Many wireless communication equipment including the mobile terminal (MS), the equipment price and operating costs are gradually getting cheaper due to continuous technology development, productivity improvement, mass production, etc., and communication cost by the occupation of the line or channel is also relatively low. The prevalence is spreading rapidly.

Although the first generation (1G) communication method of the mobile communication system including the mobile terminal (MS) uses a voice level signal, the next generation (2G) can be a message data communication method using letters, symbols, numbers, graphics, etc. The third generation (3GPP: 3RD GENERATION PARTNERSHIP PROJECT) of the current generation is developing into a multimedia communication system in which an image signal is included in the voice level message and the message level signal.

Various communication equipments, including the portable terminal, have a relatively low utilization rate because the time actually used for communication is relatively very small and there is much waiting time.

As described above, there are additional functions (hereinafter, referred to as additional services) that are developed to be embedded in the portable terminal and provided by management and control of the mobile switching center.

Examples of the additional services include, for example, a phone book managing a phone book, address management, a calculation, a game, a memo, a message creation, a schedule management, a wireless Internet access, an online game, a message transmission, a location check, a caller ID check, a video. Appreciation and so on, and new services are being developed and provided.

Among the additional services described above, those provided by the MSC may be provided free of charge and may be provided for a fee. In particular, among the additional services provided by the system, the corresponding program or data may need to be downloaded.

The download method includes a method of reproducing and operating the data after the download is completed, and a method of starting the reproducing operation in a partially downloaded state. The former is called a download service, and the latter is downloaded while the latter is downloaded. As it plays, it has the advantage of shortening the playing time and is called streaming service.

Recently, the spread of portable terminals with 3G multimedia functions has been widespread. However, since the network system including the mobile switching center (MSC) requires a lot of time, money and manpower to expand the facilities of the 3G network, However, some areas still use second generation (2G) network systems.

Accordingly, a network handover occurs in a network system service area of different generations while data is being streamed to the mobile terminal (MS), and an error (ERROR) is not obtained because the data transfer rate caused by the network handover cannot be overcome. There is a problem that occurs or does not fully utilize the data transmission speed of the network system.

Therefore, even when a network handover occurs due to the mobility of the mobile terminal MS, there is a need to develop a technique for streaming at a data transfer rate provided by a newly connected network.

Hereinafter, a streaming method of a portable terminal network handover according to the prior art will be described with reference to the accompanying drawings.

1 is a functional configuration diagram of a general mobile communication system, and FIG. 2 is a flowchart of a mobile terminal streaming method according to the prior art.

Referring to FIG. 1, the mobile communication system (MS) 10 is wirelessly connected in the service area formed by the first base station (RAN) 20, and the first mobile switching station is described. Since the location is registered at 30, the mobile communication service provided by the first mobile switching center 30 is provided.

When the mobile terminal 10 is located in the outer region of the service area formed by the first base station 20, since the noise is mixed with the communication signal, the quality of the mobile communication service deteriorates.

When the outer service area of the first base station 20 in which the mobile terminal 10 is located is included in the service area of the N-th base station 25 or the signal quality of the N-th base station 25 is good, the The mobile terminal 10 registers a location with the Nth mobile switching center 35 by a network handover connected to the Nth base station 25 and continues to receive a mobile communication service.

The first mobile switching center 30 and the N-th mobile switching station 35 are connected to each other through a public network 40 including the Internet by an IP network and share a corresponding database, thereby providing a roaming service. It is also connected to a wired communication network or another mobile communication service provider communication network, and to a streaming server (SERVER) 50 which provides various contents.

For example, if the first mobile switching center 30 is a second generation (2G) network, the maximum data transmission rate is 128 KBPS. If the second mobile switching station 35 is a third generation (3G) network, the maximum data transmission rate is 384. KBPS.

The mobile terminal (MS) 10 is guaranteed free mobility, the location registration in the service area of the first mobile switching center 30, the N-th mobile switching station in the state of receiving a data file streaming from the streaming server 50 The first mobile switching center 30 in a state of performing a network handover to the service area of 35 or registering a location in the service area of the N-th mobile switching station 35 and streaming a data file from the streaming server 50. Network handover to the service area of the network) occurs.

When the portable terminal 10 connects to the server 50 and streams data at a set transmission rate, when performing a network handover to a system having a different data transmission processing speed, the portable terminal 10 and the portable terminal 10 are connected to the server 50. Since the server 50 does not know that the data transmission speed is handed over to a different network, the server 50 continues to transmit data at the previously set transmission speed.

Thus, for example, when handing over from a 3rd generation (3G) network to a 2nd generation (2G) network, an error occurs in which no data is transmitted, and handovers from the 2nd generation (2G) network to a 3rd generation (3G) network. In this case, there is a problem in that data cannot be transmitted efficiently.

Hereinafter, a streaming method of a mobile terminal network handover according to the prior art will be described with reference to FIG. 2.

The mobile terminal 10 accesses a streaming server and determines whether to stream the searched selected file (S10). If the user wants to stream the file selected in the determination (S10), the mobile switching center network (NETWORK) Location registration and access to the content streaming server 50 (S20).

The mobile terminal 10 searches for and selects various content files provided by the connected server 50 to request streaming provision (S30), and the server 50 receives the request to identify an optimal transmission speed of the network. Then, the data is set to be transmitted at the confirmed transmission rate (S40).

As described above, the data of the file selected from the server 50 is streamed to the mobile terminal 10 through the mobile switching center through the optimal data transfer rate provided by the network that the mobile terminal 10 is currently connected to and registered with. (STREAMING) is transmitted (S50).

However, in the streaming method according to the related art having the above configuration, the mobile terminal (with the server 50 confirming and setting the optimal data transmission speed of the network and transmitting the data file to the mobile terminal 10). Although network handover occurs due to the mobility of 10), network handover is not recognized.

Therefore, since it is impossible to set an optimal data transmission rate suitable for a handed over network, a data transmission error may occur or the data transmission speed of the network may not be effectively utilized.

When the mobile terminal handovers, the mobile terminal checks the running time of the streaming data, records it in the range header of the play method, and detects and records the optimal transmission speed of the network connected by the handover in the epi packet. It is an object of the present invention to provide a streaming device and a method for handover of a mobile terminal network for changing and setting a data streaming transmission rate of a file selected by a server since the transmission to a server.

The present invention has been made in order to achieve the above object, the event unit for analyzing the signal applied from the mobile terminal control unit and outputs an event signal when it is confirmed that the network handover; A range header unit configured to detect, store, and output the remaining streaming play running time when the event occurs during the streaming service; An epitaxial unit which detects the optimal transmission rate of the connected network and records and outputs the epitaxial packet when the handover event occurs during the streaming service; When the handover occurs, the control unit for generating an event signal, recording the remaining play time of the streaming data in the range header, and controls and monitors to monitor and record the optimal transmission rate to epi. .

In addition, the present invention has been made in order to achieve the above object, the start process of accessing the streaming server through the mobile communication system network to receive the streaming service to the mobile terminal; The mobile terminal searches for and selects a server file, sends an epi packet to request streaming transmission, and determines whether a handover event is detected; An event process of checking the remaining play running time range of the signal being streamed and recording the result in a range header and transmitting the event signal to the server when the event is detected; It is characterized in that it consists of a streaming process of detecting the optimal transmission rate of the event-generating handover network, recording in an epi packet, transmitting to the server, and continuing to complete streaming.

In addition, the present invention has been made in order to achieve the above object, the streaming server connected to the mobile communication system network access process for allowing the search of the file when the mobile terminal requests the search; An epitaxial process of searching for and selecting the file and requesting a streaming service, analyzing an epitaxial packet information to set an optimal data transmission rate; A setting process of streaming data of the searched and selected file at the set transmission rate to the mobile terminal and determining whether event information is received; An analysis process of receiving and analyzing a range header of RTP when receiving the event information, and receiving and analyzing an epi packet; It is characterized by consisting of a transmission process of setting the optimal transmission speed of the analyzed handover network and streaming the remaining playable data of the streaming file.

Hereinafter, a streaming apparatus and method for a portable terminal network handover according to the present invention will be described with reference to the accompanying drawings.

3 is an explanatory diagram of a network handover occurrence state of a portable terminal according to the present invention, and FIG. 4 is a functional configuration diagram of a portable terminal network handover streaming device according to the present invention. 6 is a flowchart illustrating a network handover streaming method of a mobile terminal according to the present invention, FIG. 6 is a flowchart illustrating a network handover streaming method of a server according to the present invention, and FIG. 7 is a network handover epi packet information of a portable terminal according to the present invention. It is also a configuration state.

Referring to FIG. 3, the network handover occurrence state of the mobile terminal according to the present invention will be described. The mobile terminal 100 for multimedia communication is guaranteed to be mobile and can move to any place. For example, from the service area 115 of the second generation (2G) mobile communication system network 110 having a maximum data transfer rate of 128 KBPS, the third generation (3G) mobile communication system network 120 having a maximum data transfer rate of 384 KBPS. The service area 125 may be moved from the service area 125 of the third generation mobile communication system network 120 to the service area 115 of the second generation mobile communication system network 110.

Changing the network is called a network handover (NETWORK HAND-OVER), and the 2nd generation (2G) network and the 3rd generation (3G) network are public networks capable of IP connection such as LAN and Internet. Access through the network, share necessary data such as location registration and standard information of the mobile terminal 100, access the streaming server 140, search for a plurality of files for additional services, and receive the selected files by the streaming service. .

When the mobile terminal 100 performs a network handover, the server streaming the data of the requested file cannot check the network handover state, thereby maintaining the data transmission speed of the previously connected and confirmed mobile communication system network. Therefore, it is a technique of the present invention to solve a data transmission error or fail to utilize an optimal data transmission rate.

Hereinafter, with reference to the accompanying FIG. 4, a streaming device of a portable terminal network handover will be described.

A network connected to a base station (RAN) of a mobile communication network under the control of the controller 210 of the mobile communication terminal 100 and wirelessly transmitting and receiving communication data at a corresponding transmission rate, and handovered by the mobility of the mobile terminal 100. Wireless unit 200 for receiving and outputting the optimum transmission rate information of,

When the wireless unit 200 is connected and the network is handed over, the wireless unit 200 is recorded by recording the remaining play time range of streaming data in the range header area and recording the optimal transmission rate in the epi packet. When handover to a network having a different optimal data transmission rate, the handover state is applied to the event unit 260 to generate an event signal, and output the event signal to the range header unit 250 and the epi skin ( 230 to control the range header unit 250 to detect the remaining play time range of the streaming file signal, to record and store in the play method area of the RTSP format, and to control the epi skin 230. Recording and storing the optimal data transmission rate of the handover network detected by the wireless unit in an epi packet, and controlling the wireless unit 200 to generate the event. And a control unit 210 for transmitting Alti SP (RTSP) format information in the status signal and the epi blood packet header information and the range section 250 of the epi skin 230 to the streaming server 140,

A memory unit 220 connected to the controller 210 and recording and outputting a plurality of operating programs and data when operating power is applied to the portable terminal;

When the event (EVENT) occurs while streaming to the control unit 210, the optimum transmission speed of the handovered network is detected and recorded and output in the Epi packet (APP) packet. An epitaxial part that detects the transmission speed, records the name area of the APP packet as NETWORK CHANGED, and records and saves the optimal transmission speed of the detected network in the application data part. 230),

A motion sickness unit 240 connected to the control unit 210 and inputting / outputting an audio signal video signal text signal to a portable terminal and inputting a dialing signal and a control command;

When the event occurs during streaming, the controller 210 detects the remaining streaming time and records and outputs it to the play method area. In the event of an event, the remaining play time range of the streaming file data is detected and RTSP is detected. A range header unit 250 for recording, outputting, and outputting the PLAY METHOD area of the format;

Analyzing the signal applied from the controller 210 to detect a network handover event and outputting the corresponding signal. In case of a handover for detecting and analyzing a signal received from the wireless unit 200 and changing the network, the event ( EVENT) is configured to include an event unit 260 for generating and outputting the generated signal.

Hereinafter, according to the present invention having the above configuration, a streaming device of a mobile terminal network handover will be described in detail with reference to the accompanying drawings.

When the operating power is applied, the mobile communication multimedia portable terminal 100 is loaded with various operation programs and data stored in the memory unit 220 to the control unit 210 to be in operation standby state. The control unit 210 accesses the base station RAN by controlling the radio unit 200 and registers a location with the mobile switching center MSC, thereby receiving a mobile communication service.

When the location-registered mobile communication system network is a second generation (2G) mobile communication system network that transmits data at a maximum of 128 KBPS, a streaming service is provided at a transmission rate of up to 128 KBPS, and the connected mobile communication system network is In the third generation (3G) mobile communication system network that transmits data at up to 384 KBPS, a streaming service is provided at a transmission rate of up to 384 KBPS.

The change of the system network for registering a location due to the mobility of the mobile terminal 100 as described above is called a network handover (NETWORK HAND-OVER), and the wireless unit 200 controls the base station under the control of the controller 210. Wireless access to the (RAN) and location registration with the mobile switching center (MSC).

The network handover and location registration as described above are performed by a corresponding program loaded by the controller 210 from the memory unit 220 without inputting a separate control command through the motion sickness unit 240. .

When handover to a new mobile communication system network (HAND-OVER), the wireless unit 200 registers the location in the newly connected network and checks the maximum data transmission rate of the network and outputs it to the controller 210.

The description of the present invention describes a state in which a handover occurs while the mobile terminal 100 is connected to the streaming server 140 and receives a streaming service for downloading data of a selected file.

When the controller 210 receives the network handover information from the wireless unit 200, the controller 210 controls the event unit 260 to generate and output an event signal indicating that the handover is performed, and outputs the event signal to the epitaxial unit 230. Each of them is applied to the range header unit 250.

When the range header unit 250 inputs an event generation signal through the control unit 210, the range header unit 250 checks the remaining play time range of the streamed file, and plays a play method in a RTSP (REAL TIME STREAMING PROTOCOL) format. In the RANGE HEADER area by PLAY METHOD, the remaining remaining play time of the ongoing streaming service is recorded and output.

The epitaxial part 230 is composed of a packet having a configuration as shown in FIG. 7, and a name or name area and an application data area (APPLICATION-DEPENDENT DATA) are applied to the present invention.

The wireless unit 200 detects the optimum transmission rate of the newly connected network while applying the network handover to the controller 210, and the controller 210 transmits an event signal generated by the event unit 260 and the wireless signal. The optimum transmission rate information detected by the unit 200 is applied to the epitaxial unit 230.

The epi part 230 inputs the event signal to record NC (NETWORK CHANGED) in the name or name area, so that the network is changed, and the wireless unit 200 detects and inputs an optimal transmission. Since the speed or maximum transmission rate is recorded in the application data area in units of KBPS, the maximum transmission rate information of a newly connected network is recorded by handover.

When the event generation signal is applied from the event unit 260 in a state where the streaming service is provided by wirelessly connecting to the server 140, the controller 210 wirelessly transmits an event generation signal to the server to provide a mobile communication system. Notify that the network has been changed.

The control unit 210 notifies the server 140 of the event occurrence signal, and informs the epi packet information output from the epi unit 230 and the information of the RTP format output from the range header unit.

Accordingly, the server 140 recognizes that the connected network is changed by the event occurrence signal, recognizes the remaining part of the play time to be streamed by the ETSP format, and recognizes the maximum data transmission rate by the ETPI packet. Therefore, the rest of the streaming service is output at the new data rate, so data is transmitted at the optimal speed in the handovered network.

Hereinafter, a network handover streaming method of a portable terminal according to the present invention will be described with reference to FIG. 5.

In the case of receiving a streaming service through the mobile communication multimedia terminal 100, a process of determining whether to receive a streaming service data of a file retrieved by the mobile terminal 100 by accessing a streaming server through a mobile communication system network (S100). ; In the process (S100), if the process to search for a file and receive a streaming service starting process consisting of the step (S110) of accessing the streaming server 140 through the mobile communication system network,

The mobile terminal of the starting process searches for and selects a server file, transmits an epi packet, requests streaming transmission, and determines whether an event is detected. The mobile terminal 100 of the starting process streams through a mobile communication system network. Accessing the server 140, searching for and selecting a plurality of files, and transmitting an APP PACKET data recording an optimal transmission speed of the access network to request a streaming service (S120); A search process (S130) of determining whether a handover for changing a system network connected by the mobile terminal 100 of the process (S120) occurs and an event signal is detected;

When the event signal is detected in the search process, the remaining running time range of the streaming is checked and recorded in the range header and transmitted to the server 140 together with the event signal. When the mobile terminal detects the event occurrence signal in the search process, Transmitting an event occurrence signal to the server and notifying (S140); The mobile terminal 100 of the step (S140) checks the remaining running time range of the streaming data, the event process consisting of the step of transmitting to the server by recording in the play method area of the RTSP (RTSP) format (S150),

Detecting the optimal transmission rate of the event-producing handover network in the event process, recording in an epi packet (APP PACKET), transmitting to the server 140, and continuing streaming, handover by the portable terminal of the event process Detecting an optimal transmission speed of the system system and recording the epitaxial packet in an epitaxial packet and transmitting it to the server (S160); Receiving data streamed at the optimal transmission speed of the handovered network from the server 140 at step S160 (S170); It is determined whether the data streaming of the process (S170) is completed, and if it is not completed, it returns to the search process (S130), and if completed, it consists of a streaming process consisting of a process (S180) to proceed to the end.

Hereinafter, according to the present invention having the above configuration, a network handover streaming method of a mobile terminal will be described in detail with reference to the accompanying drawings.

When using the mobile terminal 100 to use the streaming service (S100), access to the streaming server 140 through the mobile communication system network (S110), various files provided by the connected server 140 Search and select, and transmits the APP packet information recorded the optimal data transmission rate information of the connected system network to request the streaming transmission of the selected file data (S120).

The portable terminal requesting the streaming service of the selected file data as described above determines whether an event signal to which the connected network is handed over is detected (S130), and when the event signal is detected, an event is generated in the streaming server 140. Notify by wireless transmission of the signal (S140).

The portable terminal 100 notifying the server of the event occurrence as described above, checks the remaining running time range of the streaming file, records and stores in the range header area of the RTSP (RTSP) format and transmits it to the server (S150). In operation S160, the system detects the optimal data transmission speed of the handovered mobile communication system network and records the epitaxial packet in the epi packet.

As described above, the server 140 receiving the optimal data rate information of the network by the mobile terminal 100 wirelessly transmits the data information of the selected file to the mobile terminal 100 through a streaming service (S170). If it is not completed by determining whether the streaming service is completed, the process returns to the search process (S130), and if the streaming service is completed, the process proceeds to the end (S180).

Therefore, even when the mobile terminal 100 requests the streaming data service from the server 140, the mobile terminal 100 makes full use of the guaranteed mobility, freely moving to a desired area, and moving handover to a network having a different data transmission speed. This has the advantage of providing the data of the specified file to the streaming service.

Hereinafter, a network handover streaming method of a server according to the present invention will be described with reference to FIG. 6.

The streaming server 140 connected to the mobile communication system network allows the search of a file provided when the mobile terminal 100 requests a search and the mobile terminal 100 is connected to the streaming server 140 by the streaming server 140. Determining whether to request a connection and search for a file (S200); In the case of requesting a search for a file from the mobile terminal 100 determined in the step (S200), the connection process consisting of a step (S210) for allowing a file search provided and provided,

When selecting a file in the access process and requesting a streaming service, it analyzes the input Epipacket (APP PACKET) information to set the optimal data transmission rate, and the mobile terminal searching in the access process selects the file and streams it. Determining whether to request a service (S220); In the process (S220), if there is a streaming service request of the mobile terminal 100, and analyzes the epi packet (APP PACKET) information received and input from the mobile terminal 100 to check and set the optimal data transmission speed of the connected network Epi process consisting of the process (S230),

The streaming of the data of the selected file at the transmission rate set in the epi process to the mobile terminal to determine whether the event information is received, carrying the file data to be transmitted by the streaming service in the epi process at the set transmission rate Streaming transmission to the terminal (S240); The server 140 of the step (S240) is a setting step consisting of the step (S250) of determining whether an event signal is received from the mobile terminal 100 receiving a streaming service,

In case of receiving the event information in the setting process, it receives and analyzes the RNG header header and receives and analyzes the epi packet, and in case of receiving the event signal in the setting process, the RTP format transmitted by the mobile terminal. Receiving and receiving and analyzing range header information recorded in the play method region (S260); An analysis process (S270) of receiving an epi packet (APP PACKET) transmitted by the mobile terminal 100 of the process (S260) and detecting and analyzing recorded information (S270);

By setting the optimal transmission speed of the handover network analyzed in the analysis process and completing the remaining playable data of the streaming file, the server 140 of the analysis process analyzes the APP PACKET information. Confirming and setting an optimal transmission rate of the handover network that generated the event (S280); The server 140 of the step (S280) is the streaming step of transmitting the remaining playable portion of the file by the analyzed range header information (S290); It is determined whether the streaming of the process (S290) is completed, and if it is not completed, the process returns to the setting process (S250), and if completed, the transmission process consisting of the process of proceeding to the end (S300).

Hereinafter, according to the present invention having the configuration described above, a network handover streaming method of the server will be described in detail with reference to the accompanying drawings.

The streaming server 140 constituting the mobile communication system network determines whether the mobile terminal 100 is connected and requests file data retrieval (S200), and the mobile terminal 100 connected in the determination (S200) is file data. When requesting the search, the file is allowed to be searched (S210).

In operation S210, the server 140 determines whether the mobile terminal 100 selects the searched file to provide corresponding data by a streaming service (S220), and provides the streaming service in the determination (S220). If the request is made, the epitaxial packet information transmitted and received from the mobile terminal is analyzed to determine an optimal data transmission rate of the currently connected mobile communication system network, and a streaming service suitable for the corresponding transmission rate is set up (S230). .

In step S230, the server 140 configured to transmit data to the optimal data transmission speed of the currently connected mobile communication system network transmits the selected file to the mobile terminal 100 by a streaming service. (S240).

In operation S240, the server 140 determines whether an event signal is received from the mobile terminal 100 (S250), and when the event signal is received in the determination S250, the server 140 receives the event signal from the mobile terminal 100. Receive and analyze the range header information to check the remaining time information that can be played by streaming (S260).

Since the server 140 of the step S260 receives and analyzes the epi packet information from the mobile terminal 100, the server 140 checks the optimal data transmission speed of the system network in which the current event is generated and handed over (S270).

The server 140 is set to be a data streaming service at the determined optimal transmission rate (S280), and the remaining data to be transmitted and played after the event occurs, the file of the streaming service proceeds before the event occurs, Streaming transmission (S290).

The server 140 determines whether the data transmission of the streaming service is completed (S300). If the data transmission is not completed, the server 140 returns to the setting process (S250) and returns to the end if the data transmission is completed. Proceed.

Accordingly, the present invention of the above configuration, the mobile terminal is connected to the server through the system network registered location, the handover to the other network by the mobility in the state of receiving the data of the selected file streaming, the handover Streaming service is provided at the optimal data transmission speed of the network.

According to the present invention having the above-described configuration, even when a handover of the system network occurs while the mobile terminal accesses the server through the system network where the mobile terminal is registered and receives the streaming service, the streaming service can be performed at the optimum data transmission speed of the network. There is an industrial use effect.

In addition, even if the system network connected to the mobile terminal is handed over, the streaming service is provided at the optimum data transmission rate, so that data transmission error does not occur and the service quality is improved by efficiently utilizing the data transmission speed of the system. It works.

Claims (17)

An event unit which analyzes a signal applied from a portable terminal controller and outputs an event signal when it is determined as network handover; A range header unit for detecting the remaining streaming play running time when the event occurs during the streaming service, and recording and storing the output in the play method; When the handover event occurs during the streaming service, the Epi-figure to detect the optimal transmission rate of the connected network and to record and output in the Epi packet; When the handover occurs, the control unit for generating an event signal, recording the remaining play time of the streaming data in the range header, and controls and monitors to monitor and record the optimal transmission rate to the epi. Streaming device for mobile terminal network handover. According to claim 1, And a wireless unit configured to wirelessly connect to a base station of a mobile communication network and to transmit and receive streaming data at an optimum transmission rate under the control of the control unit. The method of claim 1, wherein the epitaxial portion, The mobile terminal is configured to detect the optimal transmission speed of the handover network under the control of the control unit, record the changed network in the epitaxial packet name portion, and record and output the optimal transmission speed in the application data portion. Streaming device for network handover. The method of claim 1, wherein the event unit, And connecting to the control unit and detecting and analyzing a signal received from a wireless unit to determine a handover, and generating and outputting an event generation signal. The method of claim 1, wherein the range header unit, And generating, storing, and outputting the remaining play running time range of the streaming file data in the event of occurrence of an event under the control of the controller. The method of claim 1, wherein the control unit, When the wireless unit is monitored and confirmed as a handover, the event unit generates an event signal to be applied to the range header unit and the epi unit, and controls the range header unit to detect the remaining play running time range of the file signal being streamed. Records in a play method area of an RTP format, detects an optimal data transmission speed of a handed over network by controlling the epitaxial part, records an epitaxial packet, records the event occurrence signal, epitaxial packet information, and RtP format information Streaming device of a mobile terminal network handover, characterized in that consisting of a transmission to a streaming server. If the mobile terminal wants to receive the streaming service starting process of connecting to the streaming server through the mobile communication system network, The mobile terminal searches for and selects a server file, sends an epi packet to request streaming transmission, and determines whether a handover event is detected; An event process of checking the remaining play running time range of the signal being streamed and recording it in the range header when the event is detected, and transmitting the event signal to the server; And a streaming process of detecting an optimal transmission rate of the event-producing handover network, recording it in an epi packet, transmitting it to a server, and continuing to complete streaming. delete The method of claim 7, wherein the searching process, Requesting a streaming service by searching and selecting a plurality of files from a connected streaming server in the starting process, transmitting epi packet data recording an optimal transmission speed of an access network; And determining whether an event signal of a handover occurrence that changes a system network connected by the portable terminal is detected. The method of claim 7, wherein the event process, In the searching process, when the portable terminal detects an event occurrence signal, transmitting and notifying the event occurrence signal to the server; And the mobile terminal checks the remaining play running time range of the data being streamed, records the data in a play method area of the RTP format, and transmits the same to the server. The method of claim 7, wherein the streaming process, Detecting the optimal transmission speed of the system network handed over by the portable terminal of the event process and recording the epitaxial packet to transmit to the server; Receiving data streamed from the server at an optimal transmission speed of the handed over network; Determining whether the data streaming is completed, and if not, returns to the search process, and if the data streaming is completed, proceeding to end. The streaming server connected to the mobile communication system network includes a connection process for allowing a file search when the mobile terminal requests a search; An epitaxial process of searching for and selecting the file and requesting a streaming service, analyzing an incoming epitaxial packet information and setting an optimal data transmission rate; A setting process of streaming data of the searched and selected file at the set transmission rate to the mobile terminal and determining whether event information is received; An analysis process of receiving and analyzing a range header of RTP when receiving the event information, and receiving and analyzing an epi packet; And a transmission process of setting the optimal transmission speed of the analyzed handover network and completing streaming of the remaining playable data of the streaming file. delete The method of claim 12, wherein the epi process is, Determining whether the mobile terminal searching in the access process requests a streaming service by selecting a file; When the streaming service request of the mobile terminal, the mobile terminal network handover streaming method comprising the step of analyzing the epi packet information received from the portable terminal and confirming and setting the optimal data transmission rate of the connected network . The method of claim 12, wherein the setting process, Streaming the data of the file requested to be transmitted by the streaming service in the epi process to the mobile terminal at a set transmission rate; And the server is configured to determine whether an event signal is received from a mobile terminal receiving a streaming service. The method of claim 12, wherein the analyzing process, Receiving an ALSP format transmitted by the mobile terminal when receiving an event signal in the setting process and detecting and analyzing range header information recorded in a play method region; Receiving an epitaxial packet transmitted by the mobile terminal and detecting and analyzing recorded information; and streaming the portable terminal network handover. The method of claim 12, wherein the transmission process, Analyzing the epi packet information by the server in the analysis process and checking and setting an optimal transmission rate of the handover network that generated the event; The server streaming and transmitting the remaining playable part of the file based on the analyzed range header information; Determining whether the streaming is completed, and if not, returns to the setting process, and if the streaming is completed, proceeds to end of the streaming.

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