KR20060108474A - Apparatus and method for transmitting multimedia data and record media recored program therefor - Google Patents

Abstract

The present invention relates to a multimedia data transmission apparatus and a recording medium on which a program therefor is recorded. According to the present invention, a digital processing apparatus including a real-time service application and a transmission stage is executed by a digital processing apparatus for multimedia data transmission. A recording medium tangibly embodied and readable by a digital processing device, comprising: receiving a request for a non-real time data transfer; (B) receiving real-time data transmission related information from the real-time service application; (C) receiving bandwidth information of a traffic channel from the transmitting end; Dividing the non-real-time data according to a predetermined algorithm by using the real-time data transmission related information and bandwidth information; And a recording medium recording a program for performing the step (e) of requesting the transmitting end to transmit the divided non-real-time data. According to the present invention, there is an advantage that the transmission delay of the real-time data can be prevented by appropriately processing the non-real-time data which is not sensitive to the delay by using the information related to the transmission of the real-time data.

Packets, transmission delays, real-time, non-real-time, multimedia data

Description

Multimedia data transmission method, apparatus, and method for controlling recording and multimedia data transmission in which program is recorded thereon {APPARATUS AND METHOD FOR TRANSMITTING MULTIMEDIA DATA AND RECORD MEDIA RECORED PROGRAM THEREFOR}

1 is a graph showing a multimedia data transmission form according to the prior art.

2 is an internal block diagram of a user terminal according to a first embodiment of the present invention;

3 is a diagram showing a module configuration of a real-time service application according to a first embodiment of the present invention.

4 is a diagram illustrating a module configuration of a non-real-time service application according to a first embodiment of the present invention.

5 is a flowchart illustrating a non-real time data transmission process according to the first embodiment of the present invention.

6 is a graph illustrating a non-real time data transmission form of FIG. 5.

7 is a flowchart illustrating a non-real time data transmission process according to the first embodiment of the present invention.

8 is a graph illustrating a non-real time data transmission form of FIG. 7.

9 is a diagram showing the module configuration of a transmission stage according to a second embodiment of the present invention.

10 is a flow chart showing a non-real-time data transmission process according to a second embodiment of the present invention.

The present invention relates to a method for transmitting a multimedia data, an apparatus, a recording medium having recorded thereon a program and a method for controlling multimedia data transmission, and a recording medium having recorded thereon a program therefor. When using the service at the same time, multimedia data transmission method, apparatus for transmitting non-real-time data including multimedia data without limiting the real-time service, and a recording medium and a program for controlling the program and the method for transmitting the data and the same The present invention relates to a recording medium having recorded thereon a program.

In the past, general telephones were able to send and receive only voice signals between callers and receivers by using circuit-switched, but recently, through the rapid development of mobile communication technology, users can connect to wireless Internet through mobile terminals. It is now possible to access various services by connecting.

Recently, a mobile communication terminal mainly uses a packet-swtched method, which transmits a relatively small data unit called a packet through a network based on a destination address (IP address) contained in each packet. Form.

Combined with this packet-switching scheme, a mobile communication terminal can provide a voice over IP (VoIP) service that transmits voice using the Internet's IP layer and a push-to-talk (PTT) service, which is a kind of instant call service such as a radio. It came to a degree.

In particular, PTT service is a service that can communicate with the other party by pressing the PUSH-TO-TALK switch on the mobile communication terminal, and can communicate immediately without going through unnecessary processes such as dialing or ringing tone. This service is attracting attention recently because it has an advantage of being able to connect promptly and quickly compared to communication call waiting time, and to one to many calls and video calls.

In addition, as a service using a packet switching method is provided, a mobile communication terminal can use various additional services even during a call with a counterpart. For example, a user transmits a real-time voice packet for a call with a counterpart while meeting data. You can transfer specific files such as, or use a wireless web browsing service.

As described above, in providing various services at the same time by using a mobile communication terminal, data is transmitted by using a best-effort method of transmitting a packet requested as soon as possible.

1 is a graph illustrating a multimedia data transmission form according to the prior art. As shown in FIG. 1, when a transmission request for a specific file is received in a situation in which voice transmission is performed at a predetermined transmission period, the transmission end is currently present. The requested packet is transmitted first, which delays the transmission of the voice packet.

According to the prior art, when a large amount of file data transmission is requested during a real-time voice packet transmission, a delay of the voice packet transmission and a method of transmitting the file data first are applied. There was an absurdity sacrificed by other multimedia data transmissions that did not require real time.

In order to solve this problem, methods for preserving a predetermined bandwidth have been devised in a wired network, but according to the development of mobile communication terminal technology and increasing user demand, a predetermined bandwidth is preliminarily allocated in the situation of using multiple data services simultaneously in a wireless mobile environment. Even if it does not provide enough bandwidth at the transmitting end, there is a problem that the transmission of the real-time packet is often sacrificed due to the occurrence of bottlenecks (bottleneck).

In addition, as shown in the lower part of FIG. 1, even when using a fast transmission stage with a higher transmittable bandwidth, the transmission network is not improved very rapidly to solve the problem that the real-time packet transmission is sacrificed due to the transmission of a large amount of multimedia data. It is true that unless there was a limit.

In the present invention, in order to solve the problems of the prior art as described above, a method, apparatus and program for transmitting multimedia data in which non-real time packets that are not delay sensitive do not interfere with transmission of delay sensitive real time packets. The present invention provides a recording medium and a method of controlling multimedia data transmission, and a recording medium on which a program for the same is recorded.

Another object of the present invention is to prevent the transmission delay of the real-time packet, multimedia data transmission method, apparatus and apparatus capable of preventing the deterioration of the quality of real-time data, such as user voice, and the recording medium and the program for controlling the data transmission control The present invention provides a high-quality multimedia transmission service through providing a recording medium on which a method and a program therefor are recorded, and preventing a deterioration of a real-time packet, thereby preventing deterioration of real-time data such as user voice.

In order to achieve the above object, according to a preferred embodiment of the present invention, a program of instructions that can be executed by a digital processing device for multimedia data transmission in a digital processing device comprising a real-time service application and a transmitting end. A recording medium embodied in this type and readable by a digital processing device, comprising: receiving a request for a non-real time data transmission (a); (B) receiving real-time data transmission related information from the real-time service application; (C) receiving bandwidth information of a traffic channel from the transmitting end; Dividing the non-real-time data according to a predetermined algorithm by using the real-time data transmission related information and bandwidth information; And a recording medium recording a program for performing the step (e) of requesting the transmitting end to transmit the divided non-real-time data.

According to another embodiment of the present invention, in a digital processing apparatus including a real-time service application and a non-real-time service application, a program of instructions that may be executed by the digital processing apparatus for multimedia data transmission is tangibly implemented and digitally processed. A record carrier readable by an apparatus, comprising: receiving at least one of real-time data and non-real-time data, the real-time data including information related to real-time data transmission; (B) determining whether real-time data is included in the received data; (C) dividing the non-real-time data according to a preset algorithm using the traffic channel bandwidth information and the real-time data transmission related information; A recording medium is provided which records a program for performing step (d) of generating a packet corresponding to the non-real-time data.

According to another embodiment of the present invention, a multimedia data transmission apparatus including a real-time service application and a transmitting end, comprising: a real-time data information receiving module for receiving real-time data transmission related information from the real-time service application; A bandwidth information receiving module for receiving bandwidth information of a traffic channel from the transmitting end; A non-real time data dividing module for dividing the non-real time data according to a preset algorithm using the real time data transmission related information and the bandwidth information; And a non-real-time data transmission request module for requesting the transmitting end to transmit the divided non-real-time data.

Further, according to another embodiment of the present invention, a multimedia data transmission apparatus including a real-time service application and a non-real-time service application, the data receiving module for receiving at least one of real-time data and non-real-time data Real-time data includes information related to real-time data transmission; A scheduling module that determines whether real-time data is included in the received data so that the real-time data is processed first; A non-real-time data partitioning module for partitioning the non-real-time data according to a predetermined algorithm using traffic channel bandwidth information and the real-time data transmission related information; And a packet generation module generating a packet corresponding to the non-real time data.

According to the present invention, there is provided a method for controlling the transmission of multimedia data in a user terminal including a real-time service application and a transmitting end, the method comprising: receiving a request for non-real time data transmission; (B) receiving real-time data transmission related information from the real-time service application; (C) receiving bandwidth information of a traffic channel from the transmitting end; Dividing the non-real-time data according to a predetermined algorithm by using the real-time data transmission related information and the bandwidth information; And (e) requesting the transmitting end to transmit the divided non-real-time data.

In addition, according to the present invention, as a method for controlling the transmission of multimedia data in a user terminal including a real-time service application and a non-real-time service application, receiving at least one of real-time data and non-real-time data ( a)-the real-time data includes information related to real-time data transmission; (B) determining whether real-time data is included in the received data; (C) dividing the non-real-time data according to a preset algorithm using the traffic channel bandwidth information and the real-time data transmission related information; There is provided a multimedia data transmission control method comprising the step (d) of generating a packet corresponding to the non-real-time data.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the apparatus for transmitting multimedia data according to the present invention and a recording medium on which a program therefor is recorded.

(1) First embodiment

2 is an internal block diagram of a user terminal according to a first embodiment of the present invention.

As shown in FIG. 2, the user terminal according to the present invention may include a real-time service application 200, a non-real-time service application 202, and a transmitting end 204.

The user terminal according to the present invention is a terminal that enables simultaneous use of real-time services such as voice and video transmission and non-real-time services such as conference data transmission or web browsing during a video call. The communication terminal may be mainly included, but is not limited thereto, and any terminal capable of simultaneously providing various data services may be included.

The real-time service application 200 performs a function of processing real-time data according to a user request. Here, the real-time data is data to be immediately transmitted to the counterpart. For example, the real-time data may correspond to the voice input by the user and the moving image data to be reproduced in synchronization with the voice during the video call with the counterpart.

According to the present invention, when the user sets the user terminal to the real-time data transmission mode, the real-time service application 200 encodes the data input after the mode setting, the real-time data to the transmitting end 204 Performs the function of requesting the transmission of the.

For example, when a user presses a PUSH-TO-TALK button (not shown) provided in a mobile communication terminal and inputs a voice signal in order to use a PTT service, the real-time service application 200 may input corresponding voice data. The encoding process is performed, and the transmitting end 204 performs a function of requesting transmission of voice data.

In addition, the real-time service application 200 according to the present invention provides information related to real-time data transmission to the non-real-time service application 202.

Real-time data transmission related information may include information on the traffic on / off information, the size of the real-time data, the transmission period and the transmission time of the real-time data. Here, the traffic on / off information is information on whether voice or video is currently being transmitted.

The non-real-time service application 202 processes non-real-time data generated by a request of a higher application or a user, where the non-real-time data does not need to be synchronized with voice, such as still pictures, FTP files, and web browsing. It means data that is not sensitive to transmission delay that the other party does not need to check in real time.

In the above, when the request of the upper application is set to transmit the presentation material at a preset time interval, for example, in a remote video conference, or set to transmit a still image at a preset time interval in a still video call, This means that the higher-level application requests the non-real-time service application 202 to transmit the data and the still image data at preset time intervals.

The non-real time service application 202 according to the present invention performs a function of dividing the non-real time data by using the real time data transmission related information transmitted from the real time service application 200.

In the NRT process, the transmittable bandwidth information of the traffic channel received from the transmitting end 204 is also used.

The non-real-time service application 202 uses the real-time data transmission related information such as whether the traffic is on, the transmission period, the size of the real-time data, and the transmittable bandwidth information at the transmitting end 204, and stores the non-real-time data in a predetermined size. Divide by. That is, the process of determining the minimum transmission unit of the non-real time data in consideration of the real time data is performed.

When the non-real time data is divided and transmitted, the transmission form in the transmitting end 204 is illustrated in FIG. 6. According to the present invention, traffic is turned on to transmit real-time data such as voice. Even when there is a request for transmitting non-real time data, only a small delay occurs in real time data transmission.

In addition, when the non-real-time service application 202 obtains information on the transmission time of the real-time data, the transmission may be requested to the transmission terminal 204 in consideration of the transmission time as well as the division processing of the non-real-time data. have.

If the transmission time information exists, the non-real time application 202 makes a request for transmission of the non-real time data divided as described above after the transmission time of the real time data, and at this time, The transmission form is shown in FIG. 8, and the voice transmission, which is real-time data, can efficiently transmit non-real-time data without any delay.

As described above, the data generated by the real-time application 200 and the non-real-time application 202 is temporarily stored in the real-time data buffer (not shown) and the non-real-time data buffer (not shown) and then the transmitting end 204. The transmission process is performed.

The transmitting end 204 receives the data requested to be transmitted from the upper layer real-time service application 200 and the non-real-time service application 202 to generate a packet, establish a packet transmission path, and transmit the packet to a physical signal. It is a part that includes all the general transport layer, network layer and data link layer.

As the transport layer, it may include a TCP module (including the UDP module) and an IP module as the network layer.

The TCP module sends the data received from the application to the IP module by attaching a TCP header including a port number, a sequence number, and a checksum to reliably transmit data to the counterpart according to the application's instructions. The IP module is transferred from the TCP module. This function performs the function of generating an IP packet by appending an IP header including a destination and a sender address to the data bundle.

The data link layer performs a function of transmitting a packet through a communication line. The data link layer may use a Point-to-Point Protocol (PPP) and a Radio Link Protocol (RPL). It can provide transmittable bandwidth information.

The transmitting end 204 according to the present invention provides the NRT service application 202 with transmittable bandwidth information of the currently allocated channel.

As described above, the transmittable bandwidth information is used by the non-real-time service application 202 as information for partitioning of non-real-time data.

3 is a diagram illustrating a module configuration of a real-time service application according to the first embodiment of the present invention.

As shown in FIG. 3, the real-time service application according to the present invention may include a real-time data processing module 300, a real-time data transmission request module 302, and a real-time data information transmission module 304. .

The real-time data processing module 300 encodes the input real-time information (voice, video, etc.) according to a user's request and converts the received real-time information into a data format that can be transmitted in a network.

The real-time data transmission request module 302 performs a function of requesting transmission to the transmitting end 204 for the real-time data processed by the real-time data processing module 300.

According to the present invention, the data requested to be transmitted by the real-time data transmission request module 302 is stored in a buffer (not shown), and then, the data is transferred to the transmission end 204 to be provided by the TCP (or UDP) module and the IP module. After processing is performed, it is converted into a packet and transmitted to the network.

The real-time data information transmission module 304 transmits general information related to the transmission of real-time data to be transmitted to the non-real-time service application 202.

As described above, the real-time data transmission related information may include information on traffic on / off information, the transmission period of the real-time data, the size (capacity), and may additionally include information on the transmission time. have.

When transmitting real-time data (for example, voice data) that occurs continuously for a certain time by packet switching, a request for the transmission of real-time data at a certain transmission period is performed according to an application. It is preset as an internal clock.

Using the real-time data transmission related information, the non-real time application 202 divides the non-real time data.

4 is a diagram illustrating a module configuration of a non-real time service application according to a first embodiment of the present invention.

As shown in FIG. 4, the non-real time service application according to the present invention includes a real time data information receiving module 400, a bandwidth information receiving module 402, a non-real time data partitioning module 404, and a non-real time data. It may include a transmission request module 406 and a timer module 408.

The real-time data information receiving module 400 receives the traffic on / off information, the information on the transmission period, the size and the transmission time of the real-time data from the real-time data information transmission module 304, and divides the non-real-time data. Send to module 404 and timer module 408.

The bandwidth information receiving module 402 receives the bandwidth information provided from the transmitting end 204 and transmits the bandwidth information to the non-real time data partitioning module 404.

Here, the bandwidth information means transmittable bandwidth information of a channel allocated to the user terminal.

The non-real time data segmentation module 404 performs a process of dividing the non-real time data generated according to a higher application or a user's request. The non-real time data segmentation module 404 uses the real time data transmission related information and bandwidth information to perform a non-real time according to a preset algorithm. Split the last name data.

Looking at the processing of the non-real-time data segmentation module 404, first, it is determined whether the traffic is on, and if the traffic is on (when real-time data such as audio and video are sent), real-time data In order not to interfere with the transmission of the non-real time data, the non-real time data is divided by the remaining time (non-real time data transmission time) except for the time required for transmitting the real time data in the transmission period of the real time data.

Here, the time required to transmit the real-time data is a value obtained by dividing the size of the real-time data by the transmittable bandwidth, and divides the non-real-time data by the size of the calculated non-real-time data transmission time multiplied by the transmittable bandwidth. Done.

According to the present invention, the non-real-time data requested by the user is not directly sent to the transmitting end 204, but differently from the non-real-time service application 202 as described above. 6, it is possible to prevent the real-time data transmission from being greatly delayed at the transmitting end.

On the other hand, if the traffic is off (i.e., no real-time data transmission is currently being performed), the non-real-time data partitioning module 404 is non-real-time as much as multiplied by the transmittable bandwidth of the real-time data transmission period. Split the last name data.

When the traffic is off, the process of partitioning the non-real-time data is performed without considering the time required for the transmission of the real-time data, but in this case, the non-real-time data is transmitted only as described above.

This means that if the real time data is not present at present, the entire non-real time data is transmitted, even if the transmitting end supports the real time data priority, as shown in FIG. This is because there is a problem of delayed transmission.

The non-real time data transmission request module 406 requests the transmitting end 204 to transmit the divided non-real time data as described above.

According to the present invention, the non-real time data transmission request module 406 may make a transmission request in consideration of transmission time information of the real time data.

That is, as described above, the transmission request is not immediately made to the transmitting end 204 for the divided non-real-time data but is requested to be transmitted immediately after the transmission time of the real-time data.

As such, when a request for transmission is made immediately after the transmission of the real-time data, as shown in FIG. 8, since the transmission of the non-real-time data is performed after the transmission of the real-time data, the transmission delay of the real-time data does not occur. Will not.

The timer module 408 determines whether the transmission period has elapsed.

The timer module 408 transmits information on whether the transmission period of the real-time data has elapsed to the non-real-time data transmission request module 406, and thus, the non-real-time data transmission request module 406 transmits ( 204 request to send the non-real time data.

FIG. 5 is a flowchart illustrating a non-real time data transmission process according to the first embodiment of the present invention, and is a processing procedure when transmission time information does not exist among real-time data transmission related information.

Referring to FIG. 5, the non-real time service application 202 is in a waiting state for receiving a request for transmission of non-real time data (S500), after which a request for transmitting non-real time data is received according to a request of a higher application or a user. It is determined whether or not (S502).

If the non-real time data transmission request is received, the non-real time service application 202 determines whether the traffic is on (S504). Whether traffic is on means determining whether a real-time data such as voice or video is transmitted from the real-time data transmission related information.

If the current traffic is on, the non-real-time data is divided by the time (non-real-time data transmission time) except the time required for the transmission of the real-time data in the real-time data transmission period to generate the data for transmission. (S506).

That is, the non-real-time service application 202 generates non-real-time data for transmission by the amount multiplied by the transmittable bandwidth by the non-real-time data transmission time calculated by the above method.

However, when the traffic is turned off in step S504, the non-real-time service application 202 uses non-real-time using only the transmission period and the transmittable bandwidth of the real-time data without considering the time required for transmitting the real-time data. The sex data is divided to generate transmission data (S508).

Thereafter, a request is made for transmission of the non-real time data divided by the transmitting end (S510). In response to such a transmission request, the TCP / IP module of the transmitting end 204 processes the divided non-real-time data, generates a packet, and transmits the packet to the network.

Thereafter, the non-real-time service application 202 determines whether the transmission cycle of the real-time data has passed (S512).

If the transmission period has elapsed, the non-real time service application 202 determines whether there is any non-real time data to be transmitted (S514), and if the data to be transmitted remains, repeating steps S504 to S514, If there is no data to be transmitted, the process returns to step S500.

When the non-real time service application 202 processes the non-real time data in the manner shown in FIG. 5, the transmission form at the transmitting end 204 is as shown in FIG. 6.

7 is a flowchart illustrating a non-real-time data transmission process according to the first embodiment of the present invention.

Unlike FIG. 5, FIG. 7 is a diagram illustrating a processing procedure when transmission time information of real-time data exists.

Referring to FIG. 7, first, the non-real-time service application 202 is in a waiting state for receiving a non-real-time data transmission request (S700), and whether a request for transmission of non-real-time data according to a higher application or a user request is received. Determine (S702).

When there is a request for transmission of non-real-time data, it is determined whether the traffic is on (S704). When the traffic is on, for example, when a video call or a PTT service using a mobile communication terminal is used, real-time data transmission is related. The process of generating the data for transmission by dividing the non-real-time data using the information is performed (S706).

Since the partitioning process of the non-real-time data is the same as that of step S504 of FIG. 5, a detailed description thereof will be omitted.

On the other hand, if the traffic is off, the non-real-time service application 202 generates the data for transmission by dividing the non-real-time data by the size multiplied by the transmission period of the transmittable bandwidth and the real-time data (S708).

Next, the non-real time service application 202 determines whether transmission time point information exists in the real time data transmission related information provided by the real time service application 200 (S710).

If there is no transmission time information, a transmission request is immediately made (S714). In this case, the transmission form in the transmission terminal 204 is as shown in FIG. 6.

On the other hand, if the transmission time information exists, the non-real time service application 202 requests the transmission of the real-time data divided after the transmission time of the real-time data (S712).

In this case, the transmission form of the non-real time data in the transmitting end 204 is as shown in FIG. 8.

As described above, when the non-real time data is transmitted in the form shown in FIG. 8, the transmission delay of the real time data sensitive to the delay does not occur, so that the transmission quality of the real time data may be improved.

Thereafter, the transmitting end 204 processes the divided non-real-time data, generates a packet, and transmits the packet through the network.

The non-real-time service application 202 determines whether the transmission period has elapsed after the transmission request is made (S716), and if the transmission period has elapsed, additionally determines whether the non-real-time data to be transmitted remains (S718). ).

If the non-real time data to be transmitted remains, steps S704 to S716 are repeated, and if there is no non-real time data to be transmitted, the process returns to step S700.

(2) Second Embodiment

In the above-described first embodiment, a process of providing information for partitioning non-real-time data in a real-time service application, and the non-real-time service application divides the non-real-time data using the same, has been described. Each application provides only identifier information and information related to transmission of its own data, and describes a process of segmenting non-real-time data in a transmitting end generating an actual packet.

9 is a diagram illustrating a module configuration of a transmission stage according to the second embodiment of the present invention.

As shown in FIG. 9, a transmitting end according to another embodiment of the present invention includes a data receiving module 900, a scheduling module 902, a non-real time data partitioning module 904, a packet generating module 906, and a timer. Module 908 may be included.

In the second embodiment, since the transmitting end receives the real-time data transmission-related information from the real-time service application and performs the non-real-time data partitioning process, the non-real-time service application is simply generated by a higher application or a user request. It is only necessary to request the transmitting end to transmit real-time data, and it is not necessary to include the module shown in FIG.

In the second embodiment, the real time service application transmits the real time data transmission related information as in the first embodiment, and has the same configuration as that shown in FIG.

However, there is a difference from the first embodiment in that the information related to the real-time data transmission is transmitted to the transmitter rather than the non-real-time service application.

In FIG. 9, the data receiving module 900 receives data requested for transmission by a real-time service application and a non-real-time service application.

Conventionally, data is received at the transmitting end without distinguishing between real-time and non-real-time from an application. Accordingly, the transmitting end generates and transmits packets in the order in which the data is received.

However, according to the present invention, the real-time data and the non-real-time data received by the transmitter includes a real-time data identifier and a non-real-time data identifier, and together with the real-time data such as the size and transmission period of the real-time data. Transmission related information is included.

In the above description, an identifier is included in both the real-time data and the non-real-time data, but an identifier may be assigned only to the real-time data, and data without such an identifier may be recognized as non-real-time data.

The scheduling module 902 identifies the data received from the data receiving module 900 and performs a function of processing the priority data when the real time data is included.

In the second embodiment, since the real-time data is preferentially processed by the scheduling module 902, the real-time data transmission time point information in the first embodiment may not be used, and after the real-time data is transmitted, Since the real-time data is transmitted, it has a transmission form as shown in FIG. 8.

The non-real-time data partitioning module 904 divides the non-real-time data by using real-time data transmission related information. When the scheduling module 902 determines that the real-time data has been received, A process of dividing the non-real-time data by the amount of time remaining except for the time required to transmit it in the data transmission period is performed.

In the second embodiment, since the non-real-time data division processing is performed at the transmitting end having the bandwidth information allocated to the user terminal, the transmission and reception of the transmittable bandwidth is not necessary.

On the other hand, if there is no real-time data, the non-real-time data partitioning module 904 performs a process of dividing the non-real-time data by the size multiplied by the transmittable bandwidth in the transmission period.

The packet generation module 906 first processes the real-time data or the divided non-real-time data that has been determined to process to generate a packet.

As described above, the transmitting end may include a TCP (or UDP) module and an IP module. The packet generation module 906 adds header information to the real-time data and the segmented non-real-time data to improve the reliability of the packet. It can be transmitted to the other party while securing.

The timer module 908 determines whether the transmission period of the real-time data has elapsed, thereby allowing the segmentation processing and the packet generation process of the non-real-time data to be repeatedly performed.

FIG. 10 is a flowchart illustrating a non-real time data transmission process according to a second embodiment of the present invention. FIG. 10 is a diagram illustrating a non-real time data partitioning process performed by a transmitting end.

Referring to FIG. 10, the transmitter receives real-time data and / or non-real-time data from the real-time service application and the non-real-time service application, respectively (S1000).

Thereafter, the transmitter determines whether real-time data is included in the received data (S1002).

As described above, since the identifier for identifying the real-time data is assigned to the real-time data according to the present invention, it is determined whether the real-time data is included in the received data using the identifier.

If the real-time data is included, the transmitting end processes the real-time data first (S1004), where the priority processing means generating and transmitting a packet corresponding to the real-time data first.

As described above, data passing from the real-time application 200 and the non-real-time application 202 to the transmitting end may be temporarily stored in the real-time data buffer (not shown) and the non-real-time data buffer (not shown). In operation S1008, the transmitting end determines whether the non-real-time data buffer is empty after processing the real-time data first.

If the non-real-time data buffer is empty, the process returns to step S1000. If non-real-time data exists in the buffer, the non-real-time data buffer has a time size excluding the time required to transmit the real-time data in the real-time data transmission period. In step S1012, a process of generating and transmitting a non-real time data packet is performed.

On the other hand, if the real-time data is not included in the step (S1002), the received data is stored in the non-real-time data buffer (S1006). Thereafter, it is determined whether the non-real-time data buffer is empty (S1010). If there is data to be transmitted to the non-real-time data buffer, the non-real-time data is multiplied by the size multiplied by the transmission period of the real-time data and the transmittable bandwidth. A process of transmitting a data packet after generation is performed (S1014).

Thereafter, after the transmission of the non-real-time data, it is determined whether there is newly received data (S1016), and if there is newly received data, steps S1002 to S1014 are repeated.

On the other hand, if there is no newly received data, it is determined whether the non-real-time data buffer is empty (S1018). At this time, if the non-real-time data buffer is not empty, step S1014 is performed again.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, according to the present invention, when using real-time services such as voice and video and non-real-time services at the same time, the transmission delay of the real-time data is prevented, and the quality of the real-time service even if multimedia data is transmitted at the same time. The advantage is that it can be maintained.

Claims (24)

In the digital processing device including a real-time service application and the transmitting end, a program of instructions that can be executed by the digital processing device for the transmission of multimedia data is tangibly embodied and can be read by the digital processing device. (A) receiving a non-real time data transmission request; (B) receiving real-time data transmission related information from the real-time service application; (C) receiving bandwidth information of a traffic channel from the transmitting end; Dividing the non-real-time data according to a predetermined algorithm by using the real-time data transmission related information and bandwidth information; And And (e) requesting the transmitting end to transmit the divided non-real time data. The method of claim 1, The information related to the real-time data transmission includes a traffic on / off information, a transmission period and a size of the real-time data. The method of claim 2, When the real-time data traffic is turned on, the step (d) divides the non-real-time data by a size obtained by multiplying the bandwidth by a time excluding the transmission time required for the real-time data in the transmission period of the real-time data. Characterized in that the recording medium. The method of claim 2, When the real-time data traffic is off, the step (d) divides the non-real-time data by the size multiplied by the transmission period of the real-time data and the bandwidth. The method of claim 2, The real-time data transmission related information further includes transmission time information of the real-time data, and the step (e) is characterized by requesting the transmission of the divided non-real-time data after the transmission time of the real-time data. Recording medium. The method of claim 2, The method may further include determining whether the transmission period of the real-time data has elapsed. And when the transmission period has elapsed, repeating step (e). In a digital processing device including a real-time service application and a non-real-time service application, a program of instructions that can be executed by the digital processing device for the transmission of multimedia data is tangibly embodied and can be read by the digital processing device. as, Receiving at least one of real-time data and non-real-time data (a), wherein the real-time data includes information related to real-time data transmission; (B) determining whether real-time data is included in the received data; (C) dividing the non-real-time data according to a preset algorithm using the traffic channel bandwidth information and the real-time data transmission related information; And (d) generating a packet corresponding to the non-real-time data. The method of claim 7, wherein The information related to the real time data transmission includes a transmission period and a size of the real time data. The method of claim 8, When the real-time data is included in the received data, the step (c) may include the non-real-time data as much as the product times the bandwidth except the required time for transmitting the real-time data in the transmission period of the real-time data. A recording medium, characterized by dividing. The method of claim 8, When the real-time data is not included among the received data, the step (c) divides the non-real-time data by the size multiplied by the transmission period of the real-time data and the bandwidth. The method of claim 8, The method may further include determining whether the transmission period of the real-time data has elapsed. If the transmission period has elapsed, the recording medium, characterized in that for repeating steps (b) to (d). A multimedia data transmission device including a real-time service application and a transmission end, A real-time data information receiving module for receiving real-time data transmission related information from the real-time service application; A bandwidth information receiving module for receiving bandwidth information of a traffic channel from the transmitting end; A non-real time data dividing module for dividing the non-real time data according to a preset algorithm using the real time data transmission related information and the bandwidth information; And And a non-real-time data transmission request module for requesting the transmitting end to transmit the divided non-real-time data. The method of claim 12, The information related to the real-time data transmission includes a traffic on / off information, a transmission period and a size of the real-time data. The method of claim 13, When the real-time data traffic is turned on, the non-real-time data partitioning module divides the non-real-time data by a size obtained by multiplying the bandwidth by a time excluding the transmission time required for the real-time data in the transmission period of the real-time data. Multimedia data transmission device. The method of claim 13, And when the real-time data traffic is off, the non-real-time data splitting module divides the non-real-time data by the size of the transmission period of the real-time data and the bandwidth. The method of claim 13, The information related to the transmission of real-time data further includes information on a transmission time point of the real-time data, and the non-real-time data transmission request module requests the transmission of the non-real-time data divided after the transmission time point of the real-time data. Data transmission device. The method of claim 13, And a timer module for determining whether the transmission period of the real-time data has elapsed. A multimedia data transmission device including a real time service application and a non real time service application, A data receiving module for receiving at least one of real-time data and non-real-time data, wherein the real-time data includes information related to real-time data transmission; A scheduling module that determines whether real-time data is included in the received data so that the real-time data is processed first; A non-real-time data partitioning module for partitioning the non-real-time data according to a predetermined algorithm using traffic channel bandwidth information and the real-time data transmission related information; And And a packet generation module for generating a packet corresponding to the non-real time data. The method of claim 18, The information related to the real time data transmission includes a transmission period and a size of the real time data. The method of claim 19, When the real-time data is included in the received data, the non-real-time data splitting module may perform the non-real-time data by a size obtained by multiplying the bandwidth by a time excluding the transmission time required for the real-time data in the transmission period of the real-time data. Multimedia data transmission device for dividing data. The method of claim 19, And the non-real time data step divides the non-real time data by a size multiplied by the transmission period of the real time data and the bandwidth when the real time data is not included in the received data. The method of claim 19, And a timer module for determining whether the transmission period of the real-time data has elapsed. A method of controlling the transmission of multimedia data in a user terminal including a real-time service application and a transmitting end, (A) receiving a non-real time data transmission request; (B) receiving real-time data transmission related information from the real-time service application; (C) receiving bandwidth information of a traffic channel from the transmitting end; Dividing the non-real-time data according to a predetermined algorithm by using the real-time data transmission related information and the bandwidth information; And (E) requesting the transmitting end to transmit the divided non-real-time data. A method of controlling transmission of multimedia data in a user terminal including a real time service application and a non real time service application, Receiving at least one of real-time data and non-real-time data (a), wherein the real-time data includes information related to real-time data transmission; (B) determining whether real-time data is included in the received data; (C) dividing the non-real-time data according to a preset algorithm using the traffic channel bandwidth information and the real-time data transmission related information; And generating a packet corresponding to the non-real time data.

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