KR100451194B1 - Reconnection message display method for mobile communication terminal device - Google Patents

Abstract

The present invention relates to a method for displaying a reconnection message of a mobile communication terminal. In particular, an unsuccessful call disconnection or notification is displayed by notifying a user by displaying a reconnection attempt time and a reconnection possible time through a screen display window during a reconnection attempt period when a wireless connection failure is detected. The purpose is to prevent call access. The present invention for this purpose is to receive the system information broadcast from the system and to store the timer and T314 or T315, detecting the presence or absence of errors in the channel in the call connection state by call origination or call reception, If a channel error is detected due to a dead area or the like, the mobile terminal attempts to reconnect until the time of T314 or T315 stored above expires, and displays a message indicating that a reconnection is attempted and remaining time remaining on the screen. .

Description

How to display reconnection message of mobile terminal {RECONNECTION MESSAGE DISPLAY METHOD FOR MOBILE COMMUNICATION TERMINAL DEVICE}

The present invention relates to a mobile communication terminal, and more particularly, to a method for displaying a reconnection message in an asynchronous IMT-2000 terminal.

In general, in a mobile communication system, when a radio wave is not normally received due to moving out of a communication radius of a base station or entering a radio wave shadow area during a call, a wireless channel that has been used for a predetermined time is maintained for a predetermined time and the predetermined time ends. If the normal radio signal is not input even after the connection is made, the terminal randomly releases the connection.

In this case, noise is transmitted to the user's ear in a system that does not encode / decode a voice signal such as an analog mobile communication system, and a silent state in which a voice signal and data transfer does not occur in a digital system such as a CDMA mobile communication system. The call is disconnected.

This period is slightly different for each mobile communication system, but maintains about 5 seconds. There is no notification to a separate user, and there is no radio section recovery procedure.

However, the asynchronous IMT-2000 system has been developed to support not only voice communication but also high speed data communication.

In this asynchronous IMT-2000 system, in order to provide a reliable communication path to the user, when the connection of voice / data communication is suspended due to the change of the wireless environment, the system automatically broadcasts it within a period (T314 or T315) previously broadcasted by the system. Implemented to perform reconnection.

These periods (T314, T315) are configurable periods in the system. The time interval T314 given from the system has a time interval of 0, 2, 4, 6, 8, 12, 16, 20 seconds, and T315 is 0, 10. You have a time up to, 30, ..., 1800 seconds.

Therefore, if the cell update procedure is normally performed within the reconnection attempt period, it may be restored to the previous call state.

The prior art will be described with reference to the operation flowchart of FIG.

1 is a flowchart illustrating a process related to call connection and release at an asynchronous IMT-2000 terminal which does not notify a user during a reconnection attempt period.

As a first step, the terminal searches for a base station of the asynchronous IMT-2000 system after the power is turned on, and when the base station is found, a timer and a T314 that the terminal should basically use by receiving system information broadcast from the system. Save T315.

T314 and T315 are time information that specifies a period during which a cell update procedure is performed after radio link failure, and is respectively 0, 2, 4, 6, 8, 12, 16, and 20. It can have a time interval of seconds and a time interval of 0, 10, 30, ..., 1800 seconds.

In the second step, when the reception of the system information is finished in the first step, the terminal enters an idle state and waits for a call origination request from a user or a call incoming request from the system.

As a third step, when a call origination or call reception request is generated in a standby state, an RRC connection setup and a radio bearer setup procedure are performed in an RRC, which is a UE and a system protocol entity. .

In the radio bearer setup process, the terminal receives information from the system on whether the currently configured service uses T314 or T315.

When the RRC connection setup and radio bearer setup procedures are completed, a user enters a connected mode in which user data such as voice or data is transmitted and received.

In the fourth step, the connected mode continuously monitors the presence or absence of an error in the currently set channel at the same time as the transmission and reception of the user's communication data.

If a link failure of a physical channel occurs, a cell update procedure is repeatedly performed by releasing the current physical channel and starting a designated T314 or T315. do.

As a fifth step, if a cell update procedure is successfully performed before the period of T314 or T315 is expired, the UE transmits a physical channel delivered through a cell update comfirm message. Set up (physical channel) and enter connected mode to maintain existing traffic.

As a sixth step, if the cell update procedure has not been successfully performed until the end of the period T314 or T315, the radio bearer information that has been set is deleted and cell selection is performed. Perform the process.

However, in the conventional mobile communication system, if the previous call state is not restored during the reconnection attempt period, there is no notice, so that the user cannot know that the reconnection attempt is in progress, and even if the call is released or the wireless access area is not known. There is a problem with establishing a call connection.

Accordingly, the present invention prevents unnecessary call disconnection or call connection by notifying the user by displaying the reconnection attempt time and the reconnection possible time through the screen display window during the reconnection attempt period in a state where a wireless connection failure is detected in order to improve the conventional problem. An object of the present invention is to provide a method for displaying a reconnection message of a mobile communication terminal.

That is, an object of the present invention is to inform a user of a temporary connection suspended state of a call and a waiting time until recovery when a radio link is disconnected during data communication.

1 is a flowchart illustrating a call reconnection process in the prior art.

2 is an operation flowchart showing a call reconnection process in an embodiment of the present invention;

According to an aspect of the present invention, there is provided a method for reconnecting a call in a mobile communication system, the method comprising: detecting whether a physical channel is released in a call connection state by call origination or call reception; And displaying the reconnection attempt time and the reconnection remaining time while attempting reconnection until the preset time expires.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In the embodiments of the present invention, a detailed description of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

2 is an operation flowchart for call reconnection according to an embodiment of the present invention, as shown therein, receiving system information broadcast from a system and storing a timer and T314 or T315, and by calling or making a call. Detecting whether there is an error in the channel in the call connection state, and if an error of the channel is detected due to a faulty area or the like, attempting to reconnect until the time of the T314 or T315 stored above is over and attempting to reconnect. Displaying the remaining time on the screen; and if the reconnection is successfully performed before the time of T314 or T315 is terminated, the terminal sets up a physical channel transferred from the system to maintain an existing call state; Cancels the display if reconnection fails until T314 or T315 expires And it is configured to perform the step of selecting a new cell.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

As a first step, the terminal searches for the base station of the asynchronous IMT-2000 system after the power is turned on, and when the base station is found, the system receives system information broadcasted through the BCH.

The SIB1 in the system information includes a timer and constant contents (including T314 and T315) that the terminal should basically use.

T314 and T315 are time information that specifies a period during which a cell update procedure is performed after radio link failure, and is respectively 0, 2, 4, 6, 8, 12, 16, and 20. It can have a time interval of seconds and a time interval of 0, 10, 30, ..., 1800 seconds.

As a second step, when the system information is received in the first step, the terminal enters an idle state and waits for a call origination request from a user or a call incoming request from the system.

As a third step, when a call origination or call reception request is generated in the standby state of the second step, an RRC connection setup and a radio bearer setup procedure are performed at the RRC, which is a terminal and a system protocol entity. Will be performed.

In the radio bearer setup process, the terminal receives information from the system on whether the currently configured service uses T314 or T315.

When the RRC connection setup and radio bearer setup procedures are completed, a user enters a connected mode in which user's call data such as voice and data are transmitted and received.

As a fourth step, the connected mode continuously monitors the presence or absence of an error in the currently set channel at the same time as the transmission and reception of the call data of the user.

If a link failure of a physical channel occurs, a cell update procedure is repeatedly performed by releasing the current physical channel and starting a designated T314 or T315. do.

At this time, the terminal displays a message indicating that the reconnection is in progress and the remaining time of T314 or T315 for reconnection on the screen display window.

As a fifth step, if a cell update procedure is successfully performed before the period of T314 or T315 is expired, the UE transmits a cell update comfirm message from the system. Set up a physical channel and enter a connected mode to maintain an existing call state.

If the cell update procedure has not been successfully performed until the end of the period T314 or T315, delete the currently set radio bearer information and repeat cell selection. Perform.

If the reconnection is successfully terminated or the reconnection is not successfully performed even until the end of the period T314 or T315 is terminated, the terminal deletes the guide message displayed on the screen display window.

As described in detail above, the present invention displays a message indicating that the user is reconnecting during the reconnection period and the remaining reconnection time on the screen to recognize that the user is reconnecting, thereby preventing the user from proceeding with unnecessary call disconnection and call connection. There is an effect that can provide.

Claims (2)

In the call reconnection method of the mobile communication system, Detecting whether a physical channel is released in a call connection state; And detecting a release of the physical channel, displaying a message indicating that the call is being reconnected and displaying a remaining time for reconnection while attempting to reconnect until a preset time expires. How to display the message. delete