KR20030056965A - Method and System forproviding multi-media service of IMT-2000 mobile telecommunication switching network - Google Patents

Abstract

PURPOSE: A system and a method for furnishing a multimedia service in an IMT-2000(International Mobile Telecommunications-2000) mobile communication switching network are provided to set optimum resources for video signals with dynamic characteristics received from a plurality of mobile terminals, and to transceive the corresponding signals by using the set resources, thereby furnishing an optimum multimedia service satisfying various service requirements requested by the plurality of the mobile terminals. CONSTITUTION: A wireless channel allocator/controller(130), or a node-B, allocates wireless channels for transceiving signals with a plurality of mobile terminals(110,111,110',111'), and receives video signals from the plurality of mobile terminals(110,111,110',111') through the wireless channels. MSCs(150,150') set transceiving control data satisfying requirements by the mobile terminals(110,111,110',111') for the video signals received through the wireless channels, and transmit the video signals to destination mobile terminals(110,111,110',111') in real time by using the set transceiving control data. And a BSC(Base Station Controller)(140) controls the wireless channel allocator/controller(130) to transmit the video signals to the target mobile terminals(110,111,110',111') by the transceiving control data set by the MSCs(150,150').

Description

System and method for providing multimedia service in IMT-2000 mobile communication switching network {Method and System forproviding multi-media service of IMT-2000 mobile telecommunication switching network}

The present invention relates to a system and method for providing a multimedia service, and more particularly, to a system and method for providing a multimedia service in an IMT-2000 mobile communication network capable of providing a high quality video service.

Generally, since the data transmission rate of PCS (Personal communication system) or cellular system is low as 9.6kbps ~ 14.4kbps, it provides multimedia service or high speed data transmission service to support high quality video of large capacity using the corresponding terminal. Not suitable for poetry

As a result, IMT-2000, a concept of the next generation mobile communication system improved from the existing system, appeared, which supports data transfer rates of up to 2 Mbps (2,000 Kbps) and effectively uses the advantages of ATM technology. Provides flexibility in bandwidth allocation for providing mobile network services and traffic selection for providing various types of services.

In addition, since researches and developments have been made to efficiently use a given radio resource in consideration of various factors such as limited radio resources, limited base station capacity, and power consumption of a mobile terminal. In addition to enabling high-speed data transmission services and video services that were not implemented in the mobile communication system, various services such as resource control and call control can be simultaneously used.

However, in the next generation mobile communication system having the above-described functions, a multimedia service for providing a large amount of video, audio, and data received from a plurality of mobile terminals to a corresponding mobile terminal may be used. The service requirements must be met.

That is, after discriminating whether a received signal is a video signal, a video and audio signal, or including only an audio signal, a user sets a bearer, allocates a bandwidth, analyzes a parameter, and controls the user. It must support multimedia services that meet the requirements of.

However, the existing mobile communication system that performs the above functions, as shown in FIG. 1, supports a multimedia service using voice, video, and data received from a plurality of mobile terminals (IMT-2000). Regardless of the various service requirements requested by the plurality of mobile terminals, the voice, video, and data are defined through standards defined in the corresponding mobile communication system (standards related to bandwidth, transmission rate, resource setting, etc.) and functions performed accordingly. It supports multimedia services.

However, since the standard of the conventional mobile communication system and its function execution are standards defined according to the functions of the mobile communication system supporting the multimedia service oriented multimedia service, when transmitting and receiving images and data through the same, This causes several problems.

That is, unlike the audio signal of a single bearer configuration, the video signal must support a plurality of resource settings, a predetermined number of bandwidths, and various bit rates. The system only supports voice signal oriented functions such as limited bandwidth, single resource configuration and so on.

As a result, existing mobile communication systems cannot support video services that meet various service requirements requested from multiple mobile terminals. For example, when the corresponding image data including the face of a person is transmitted, the corresponding mobile terminal often receives a distorted face or cannot identify whose face it is.

The technical problem to be solved by the present invention was created to solve the above problems, and can provide a multimedia service (video service) that satisfies various service requirements requested from a plurality of mobile terminals (IMT-2000). An object of the present invention is to provide a multimedia service providing system and an method thereof in an MT-2000 mobile communication switching network.

In addition, a multimedia service in an IMT-2000 mobile communication network capable of supporting various resources, various bandwidths, and bit rates for a dynamic video signal received from a plurality of mobile terminals. To provide a providing system and a method thereof.

1 is a schematic block diagram of a general IMT-2000 mobile communication network.

2 is a schematic block diagram of a multimedia service providing system in an IMT-2000 mobile communication network according to an embodiment of the present invention.

3 is a flowchart sequentially illustrating an operation process of a multimedia service providing system in an IMT-2000 mobile communication switching network according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

100: multimedia service providing system

110, 111, 110 ', 111': IMT-2000

120: UTRAN (UMTS Terrestrial Radio Access Network)

130: radio channel assignment / controller (Node-B)

140: base station controller (BSC)

150, 150 ': Mobile Switching Center

160: UMTS Core Network

The multimedia service providing system in the IMT-2000 mobile communication network according to the present invention for achieving the above object,

In the multimedia service providing system for transmitting signals received from a plurality of mobile terminals in accordance with the interworking between IMT-2000 mobile communication switching network,

A wireless channel allocator / controller for allocating a wireless channel for transmitting and receiving signals with the mobile terminal and receiving an image signal from the mobile terminal through the allocated wireless channel;

A mobile exchanger that satisfies a condition required by the mobile terminal and sets transmission and reception control data for an image signal received through the wireless channel, and transmits the image signal to a target mobile terminal in real time using the set transmission and reception control data; And

A base station controller for controlling the wireless channel allocation / controller to transmit the video signal to the target mobile terminal in real time according to the transmission / reception control data set by the mobile switching center

Characterized in that it comprises a.

Method for providing a multimedia service in the IMT-2000 mobile communication switching network according to another aspect of the present invention,

In the multimedia service providing method for transmitting signals received from a plurality of mobile terminals according to the interworking between the IMT-2000 mobile communication switching network,

Determining a service support capability of determining whether service requirements required by the plurality of mobile terminals are satisfied;

A service supporting step of supporting a plurality of resource settings, a plurality of bandwidth settings, and a plurality of data transmission speeds applied to transmission and reception control data for video signals received from the plurality of mobile terminals; And

Signal transmission step of providing the image signal to the target mobile terminal in real time using the transmission and reception control data

Characterized in that it comprises a.

Hereinafter, a multimedia service providing system and a method thereof in an IMT-2000 mobile communication switching network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, for the convenience of description, according to the mutual interworking between the mobile terminals (IMT-2000), a high quality video service provided to the target mobile terminal is called a multimedia service, and video signals transmitted from a plurality of mobile terminals are multimedia. The signal is named, and the IMT-2000 is called a mobile terminal, and suitable configuration data such as various resource settings, bandwidth settings, and data transmission rates for video signals received from a plurality of mobile terminals are called transmit / receive control data.

2 is a schematic block diagram of a multimedia service providing system in an IMT-2000 mobile communication network according to an embodiment of the present invention.

2, the multimedia service providing system 100 includes a radio channel allocation / controller (node-B, 130), a base station controller (BSC, 140), and a mobile switchboard (MSC, 150), and a UTRAN (UMTS Terrestrial Radio). Access Network: Connected to a plurality of mobile terminals (IMT-2000, 110, 111, 110 ', 111') through the European asynchronous IMT-2000 wireless access network (120).

The radio channel allocation / controller (node-B, 130) allocates a substantial radio channel to the mobile terminals 110 and 111 for signal transmission and reception with a plurality of mobile terminals 110 and 111 connected through the UTRAN 120, Receive a predetermined signal from multiple mobile terminals 110, 111 via the assigned wireless channel.

The base station controller (BSC) 140 performs overall control and management of the radio channel allocation / controller 130, and includes resource setting with the mobile terminals 110 and 111 according to the control of the mobile switching center (MSC) 150. Set transmission / reception control data.

The mobile switching center (MSC) 150 satisfies various service requirements requested from the plurality of mobile terminals 110 and 111 through the UTRAN 120, and at the same time, receives the video, audio and the like received from the mobile terminals 110 and 111. Analyzing and searching for appropriate transmission and reception control data for data and the like, and receiving voice, video, and data received from the mobile terminals 110 and 111 through resource allocation, bandwidth setting, and data transmission rate support. It performs call processing and additional service processing for real-time transmission to the target mobile terminals 110 'and 111'.

An operation process of the multimedia service providing system in the IMT-2000 mobile communication switching network having the above structure will be described with reference to the accompanying drawings.

3 is a flowchart sequentially illustrating an operation process of a multimedia service providing system in an IMT-2000 mobile communication switching network according to an embodiment of the present invention.

Referring to FIG. 3, first, signals received from a plurality of mobile terminals IMT-2000, 110, and 111 (signals including video, audio, data, etc.) and resource allocation / control information (required by the mobile terminal) If various service requirements) are received (S301), the mobile switching center (MSC) 150 that receives them can accept various requirements in the resource allocation / control information received from the plurality of mobile terminals (110, 111). Analyze (S302).

When the various service requirements required by the mobile terminals 110 and 111 are satisfied, it is analyzed whether a predetermined signal received from the mobile terminals 110 and 111 is a multimedia signal including a video signal (S303).

If the signal received from the mobile terminal (110, 111) is a multimedia signal including a video signal of the dynamic characteristics, the mobile switching center (MSC) 150 through the analysis of the received multimedia signal, the appropriate resource allocation for the multimedia signal While transmitting a resource allocation request message (RAB Assignment RQ message) requesting (transmission and reception control data) to the base station controller (BSC, 140) (S307), while receiving a predetermined signal received from the plurality of mobile terminals (110, 111) If is not a multimedia signal including a video signal, it is analyzed whether the signal including the audio signal (S304).

If the signals received from the plurality of mobile terminals 110 and 111 are signals including voice signals, the voice call processing process is performed (S306) while the signals received from the plurality of mobile terminals 110 and 111 are received. If it is not a voice signal, the call processing process is rejected (S305).

On the other hand, the base station controller (BSC) 140 receiving the resource allocation request message (RAB Assignment RQ message) from the mobile switching center (MSC) 150, referring to the resource allocation request message, high-quality multimedia using the received multimedia signal The transmission / reception control data value (resource allocation, etc.) with the wireless channel assignment / controller 130 capable of providing the service is determined (S308).

That is, the ID for the connection between the base station controller (BSC) 140 and the radio channel assignment / controller 130, the various bandwidth settings for the connection, the predetermined number of radio channel for transmitting and receiving signals, the predetermined number of data transmission rates (bit) determine appropriate transmit / receive control data values such as " rate "

Subsequently, when a resource allocation response message (RAB Assignment RP message) including transmission and reception control data is received from the base station controller (BSC) 140, the mobile switching center (MSC) 150 confirms the received resource allocation response message. The same resource is allocated using the transmission / reception control data value determined by the base station controller (BSC) 140.

As a result, resources between the mobile switching center (MSC) 150 and the mobile terminals 110 and 111 that can support high-quality multimedia services suitable for the multimedia signals of the dynamic characteristics received from the plurality of mobile terminals 110 and 111 are set. .

On the other hand, if the signals received from the plurality of mobile terminals (110, 111) is a voice signal of a single characteristic, the mobile switching center (MSC) 150 according to the present invention is a single resource setting, a single number of bandwidth and a single It supports bit rate.

Thereafter, the mobile switching center (MSC) 150 performs call processing and additional service processing for transmitting multimedia signals such as video and data using the allocated resources to the target mobile terminals 110 'and 111' (S309). It satisfies various service requirements required by the plurality of mobile terminals 110 and 111 and provides high quality multimedia services.

At this time, in performing the above process, the conditions required by the plurality of mobile terminals (110, 111) to the mobile switching center (MSC) 150 in order to receive the optimal multimedia service are as follows.

Information Transfer Capability, which allows the multimedia service providing system 100 to transmit various signals (signals including video, audio, data, etc.) received from a plurality of mobile terminals 110 and 111, Full duplex mode for mutual transmission and reception, transparent access to configured resources, whether the supported bit rate can support 64kbps, 128kbps or 384kbps, synchronous mode and user information It contains various requirements including whether User Information Layer 1 is H.223 /H.245.

That is, the multimedia service providing system 100 according to the present invention not only needs to set a suitable resource capable of satisfying all of the above requirements, but also has a minimum cell loss rate, a transmission delay rate, and the like. It is necessary to set the transmission / reception control data value that can satisfy various requirements.

For example, video signals transmitted between mobile terminals should be provided with service transmission and support for a certain amount of data loss or signal delay in transmission, and should be able to provide and control minimum resources. do.

As described above, the multimedia service providing system according to an embodiment of the present invention sets an appropriate transmission / reception control data value (resource) that can satisfy various service requirements required by a plurality of mobile terminals, and then provides a corresponding signal through a set resource. It provides a high quality multimedia service using the multimedia signal of the dynamic characteristics received from the mobile terminal through the transmission and reception of the call processing process accordingly.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

According to the present invention described above, by setting the optimal resource for the video signal of the dynamic characteristics received from the plurality of mobile terminals to perform the transmission and reception of the corresponding signal using the set resources, from the plurality of mobile terminals (IMT-2000) Not only can it provide an optimal multimedia service that satisfies the various service requirements that are requested, there is an effect that can provide a variety of video and voice of a clear and clear picture resulting therefrom.

Claims (5)

In the multimedia service providing system for transmitting signals received from a plurality of mobile terminals in accordance with the interworking between IMT-2000 mobile communication switching network, A wireless channel allocator / controller for allocating a wireless channel for transmitting and receiving signals with the mobile terminal and receiving an image signal from the mobile terminal through the allocated wireless channel; A mobile exchanger that satisfies a condition required by the mobile terminal and sets transmission and reception control data for an image signal received through the wireless channel, and transmits the image signal to a target mobile terminal in real time using the set transmission and reception control data; And A base station controller for controlling the wireless channel allocation / controller to transmit the video signal to the target mobile terminal in real time according to the transmission / reception control data set by the mobile switching center Multimedia service providing system comprising a. According to claim 1, The mobile exchanger, And a plurality of resource settings, a plurality of bandwidths, and a plurality of data transmission rates suitable for the video signal applied to the transmission and reception control data. According to claim 1, The condition required by the mobile terminal is, A signal transmission capability of transmitting the video signal received from the mobile terminal; A full duplex mode that enables signal transmission and reception between the mobile terminal and the target mobile terminal; And Multimedia service providing system comprising at least one of the various data transmission rate support for the video signal. In the multimedia service providing method for transmitting signals received from a plurality of mobile terminals according to the interworking between the IMT-2000 mobile communication switching network, A service support capability determination step of determining whether service requirements requested from the plurality of mobile terminals are satisfied; A service supporting step of supporting a plurality of resource settings, a plurality of bandwidth settings, and a plurality of data transmission speeds applied to transmission and reception control data for video signals received from the plurality of mobile terminals; And Signal transmission step of providing the image signal to the target mobile terminal in real time using the transmission and reception control data Multimedia service providing method comprising a. The method of claim 4, wherein The service support capability determination step, An information transmission capability determination step of transmitting a signal received from the mobile terminal; A transmission mode determination step of determining whether a full duplex mode capable of mutual transmission and reception of the signal; And Speed support possibility determination step of determining whether the data transmission speed for transmitting the signal is variously supported Multimedia service providing method comprising a.