KR20040084398A - Still image mobile phone service using Multiple Radio Access Bearer - Google Patents

Abstract

PURPOSE: A method for supplying a still image telephone service by using a multi-RAB(Radio Access Bearer) is provided to transmit a voice in an existing circuit service way, and to transmit a still image in a packet data service way, thereby transmitting a figure of other party as a still image during a call while maintaining an existing sound quality level. CONSTITUTION: A system sets a circuit-based bearer voice call(S10). An originating terminal sets a bearer packet call to a core network(S20). The originating terminal transmits a still image to a packet channel by using the packet channel(S30). When setting the bearer packet call, the originating terminal automatically sets the packet call. A bearer voice call and the packet call are made by using a multi-RAB way. The originating terminal periodically transmits the still image by using the packet channel.

Description

Still image mobile phone service using multiple radio bearer {Still image mobile phone service using Multiple Radio Access Bearer}

The present invention relates to a still image telephone service method using a multiple radio access bearer (Multi-RAB). More particularly, the present invention relates to a technology capable of providing an efficient still image telephony service by using multiple radio bearers in the still image telephony service for additionally transmitting still images from a conventional voice telephone.

Basic services among IMT-2000 (International Mobile Telecommunication 2000) services, which are the next generation mobile communication systems, are divided into bearer services and teleservices.

First, a bearer service is defined as a service that provides the capability of transmitting signals between access points, and a teleservice is a terminal device for supporting communication between users using a protocol made by an agreement between network operators. It is defined as a communication service that provides full capabilities including functionality.

In other words, teleservice refers to a service that provides complete capability for communication between users by terminal equipment, network functions, and functions provided by a dedicated center.

In addition, the bearer service enables information transfer between access points to perform a lower layer function. These features sometimes mean lower layers in the OSI (Open System Interconnection) hierarchy. The user can select any kind of higher layer protocol for communication. The network is not concerned about compatibility between higher layers of users.

These communication links between access points provide a general service for information transfer. The communication link is connected to several other networks, such as the Internet, an intranet, a local area network (LAN) -based network, and the like, each with its own device for controlling bearer services. Each network provides end-to-end quality of service (QOS) that is perceived by its users.

Meanwhile, video telephony service, which is a high-speed multimedia service, is one of the core services among the next generation mobile communication system, IMT-2000.

However, these video telephony services require a lot of radio resources because they use data at transmission rates of 64Kbps or less. The maximum number of users in a cell is limited to about 30, and if there are voice and packet users in the same cell, the number of subscribers who can use video telephony service is further reduced due to lack of radio resources.

In addition, since the video phone service uses a lot of radio resources, the cost is also high, and it is expected to become a lot of obstacle in the future expansion of the video phone service.

The present invention is to solve the above problems, the present invention solves the problem of shortage of radio resources, which is a disadvantage of the existing video telephone by using a multi-radio bearer (Multi-RAB) in the still image telephone service implementation Its purpose is to expand still image telephony services at low rates by transmitting the data using a packet method.

As the technical idea for achieving the above object of the present invention

In the call processing method of the still image telephone service in the next generation mobile communication system IMT-2000,

Establishing a circuit based bearer voice call;

Automatically setting up a bearer packet call from the originating terminal to the core network;

When the bearer packet call is set up, a still image telephone service method comprising the step of transmitting a still image to the packet channel using a packet channel.

1 is a schematic diagram of a call processing of a still image telephone service according to the present invention.

2 is a flowchart illustrating a still image telephone service process according to the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

1 is a schematic diagram of a call processing of a still image telephone service according to the present invention. 2 is a flowchart illustrating a still image telephone service process according to the present invention.

In general, the voice data service is called a circuit service. This circuit service continuously transmits incoming circuit data. A mobile communication system such as IMT-2000, a next generation mobile communication system, supports a high data rate to provide a packet data service for data having a large amount of data such as a video and an image through an additional channel.

While the circuit service provides continuous voice data, in the case of packet data, the data is discontinuously bursty. In addition, in the case of a voice service, the same service without delay should be provided to all users regardless of channel conditions, whereas in the case of a data service, the purpose of maximizing the overall throughput is to satisfy different data transmission requirements for each user.

By using such a feature, in the present invention, the voice is transmitted through the circuit service method, and the still image is transmitted through the packet data service method. You can send a frame.

As shown in FIG. 1, the still image call processing system includes an originating mobile station (MS), an access network, and a core network.

At this time, the access network is composed of a base station (BS) for communication with the mobile terminal and a base station controller (BSC) for the control of the base station (BS) via a wireless interval, the core network is the rear end of the access network It is connected to the base station controller (BSC) and is configured as a mobile switching center (MSC) for switching control with other base station controller.

Referring to the still image call processing process according to the present invention, as shown in FIGS. 1 and 2, first, a circuit-based bearer (Multi-RAB) voice call is set up (S10) and then the bearer (Multi- RAB) A packet call is set (S20).

At this time, the user's inconvenience can be minimized by shortening the call connection time than the existing video call setting time by making the voice setting time the same as the existing voice call.

Then, when the bearer (Multi-RAB) packet call is established (S20), the transmitting terminal periodically transmits a still image to the packet channel by, for example, 3 to 5 seconds using the packet channel (S30). By repeating the still image call processing process as described above, it is possible to stably transmit the state of the other party as a still image during a call (S10 'to S20').

At this time, the synchronization of the audio data and the image data may not be synchronized, but it is possible to implement a still image telephone while minimizing the influence on the transmission network.

As described above, according to the still image telephone service method according to the present invention, the voice is transmitted by the conventional circuit service method and the still image is transmitted by the packet data service method to stop the appearance of the other party while maintaining the existing sound quality level. Can be transmitted as a video.

In addition, it is possible to implement still image telephony service with minimal cost by sharing the radio channel with other subscribers.

In addition, by using the still image telephone service of the present invention, the subscriber side can talk while looking at the other party's face at a low rate, and the operator side can provide a differentiated service of IMT-2000 by accommodating many subscribers by saving radio resources. have.

Claims (4)

In the call processing method of the still image telephone service in the next generation mobile communication system IMT-2000, Establishing a circuit based bearer voice call; Establishing a bearer packet call from the originating terminal to the core network; And when the bearer packet call is established, transmitting a still image through a packet channel using a packet channel to the packet channel. The method according to claim 1, wherein the bearer packet call setting is a still picture telephone service method, characterized in that the originating terminal automatically establishes a packet call. The method of claim 1, wherein the bearer voice call and the packet call use a multi-radio bearer (Multi-RAB) scheme. The method of claim 1, wherein the still image is periodically transmitted from the calling terminal in units of 3 to 5 seconds using the packet channel.