KR20060024695A - Mobile communication terminal having a differential re-transmission function and controlling method therefore - Google Patents

Abstract

According to the present invention, when a mobile communication terminal registers with a base station for the first time, it receives and stores random delay time information according to the class of the subscriber of the terminal from the base station, and then executes a call diagram. After the step, if the currently attempted call connection fails, the retransmission delay time calculating step of calculating the retransmission delay time of the terminal subscriber according to the random delay time information received from the base station at the time of registration, and the retransmission calculated after the retransmission delay time calculating step After checking the delay time, if the corresponding retransmission time is reached, the mobile communication terminal having a differential retransmission function comprising a call retry step of retransmitting a channel allocation request message to the base station system through a random access channel and a control method thereof are provided. do.

In the present invention as described above, when the channel allocation request message is retransmitted according to the call allocation failure, the call retry time is differentiated and transmitted by the terminal subscribers, so that the service for each subscriber according to the call retry can be differentiated. High quality call services

Registration, base station system section, subscriber class, random delay time information, retransmission

Description

Mobile communication terminal having a differential re-transmission function and controlling method therefore}

1 is an explanatory diagram illustrating a call connection state of a conventional mobile communication system.

2 is an explanatory diagram illustrating a differential retransmission function of a terminal of the present invention.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: handset 2: codec unit

3: MSM unit 4: mobile communication terminal

5: base station system unit 6: memory unit

7: Key panel part 8: LCD panel part

9: terminal

The present invention relates to a mobile communication terminal equipped with a differential retransmission function and a control method thereof. Particularly, when retransmitting a channel allocation request message due to a failure in assigning a call, a differential retransmission function is performed so as to differentiate the call retry time for each terminal subscriber. The present invention relates to a mobile communication terminal provided therein and a control method thereof.

In general, wireless data communication refers to a communication function of wirelessly transmitting and receiving various data such as letters, numbers, and images through a base station system using a portable terminal capable of wireless transmission and reception. For example, it is a mobile communication system that exchanges or retrieves data in both directions while moving by using various terminals such as a cellular phone, a portable computer, a facsimile, and a credit card inquiry machine. Especially in the early 1980s, mobile phones divided the service area into hexagonal cells of several km to several ten kilometers in diameter in North America, and then repeatedly used the same frequency channel in geographically separated cells. As a result, cellular phones that implement radio channel switching between cells have grown rapidly for the first time.

Then, referring to the conventional mobile phone system as described above with reference to FIG. 1, a base station 71 which wirelessly processes a function signal transmitted from the mobile communication terminal 70, for example, a call signal or an SMS message, and the base station 71. MSC 72 for controlling the transmission function of the call signal or SMS message input via the) and the SMS server 73 is connected to the MSC 72 to provide an SMS message to the terminal 70.

On the other hand, referring to the operation of the conventional mobile communication system as described above, when the user of the terminal 70 presses the telephone number signal for the call, the telephone number signal is wirelessly signaled by the terminal 70 and the base station ( 72). The base station 71 transmits the call signal of the input terminal 70 to the MSC 72. Then, the MSC 72 analyzes the input call signal data to recognize the destination telephone number and transmits the call signal through the random access channel to the base station 74 of the corresponding destination. Accordingly, the base station 74 relays the transmitted call signal and connects the call to the counterpart terminal 75. At this time, when a call is formed by the above process, the terminal 70 executes a normal call with the counterpart terminal 75.

At this time, if the random access packet collides with another subscriber due to network overload during the call connection process, the terminal 70 retransmits a channel allocation request message to the base station 74 after a random time delay and receives a channel assignment. Run

However, in the conventional method of calling a mobile communication terminal, a channel allocation request message is transmitted after a random time delay when a random access packet collides with another subscriber after first transmitting a channel allocation request message to a base station through a random access channel. In this process, it is not possible to provide differentiated call processing service among subscribers. Also, since channel allocation request messages are concentrated after call allocation failure, call allocation may be overloaded again. There was a problem that could be.

Accordingly, the present invention has been invented to solve the above conventional problems, and can differentiate the service for each subscriber according to the call retry, so that there is a differential retransmission function that can execute a high quality call service for each grade of the terminal subscriber. An object of the present invention is to provide a provided mobile communication terminal and a control method thereof.

In addition, another object of the present invention is to provide a mobile communication terminal with a differential retransmission function and a control method for reducing the overload rate according to the call allocation of the base station according to the retransmission time is performed by the subscribers to the call retry. have.

According to the present invention for achieving the above object, in a mobile communication system transmitting a call connection signal through a random access channel, when the call connection attempt fails, the channel allocation request is checked by checking the retransmission time according to the grade given to the mobile communication system. Provides a mobile communication terminal having a differential retransmission function including an MSM unit for retransmitting the message, and a memory unit for storing the retransmission time granted according to the subscriber class from the base station system unit when the first call connection by the MSM unit. .

In another aspect of the present invention, the mobile communication terminal receives random delay time information according to the grade of the terminal subscriber from the base station when the mobile communication terminal initially registers as a neighbor base station, stores the random delay time information, and then executes a call diagram. After the time information receiving step, if the current connection attempt fails, the retransmission delay time calculating step of calculating the retransmission delay time of the terminal subscriber according to the random delay time information received from the base station at the time of registration, and after the retransmission delay time calculating step After checking the calculated retransmission delay time, if the corresponding retransmission time is reached, a call retry step of retransmitting a channel allocation request message to the base station system through a random access channel, and the call connection retryed after the call retry step are performed. If it fails again, return to the retransmission delay time calculation step. Provides an open call forwarding is repeatedly executed the process repeated call comprising a differential consisting of a retransmission process of transmission to the mobile communication terminal and a control method.

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

As shown in FIG. 2, the mobile communication terminal of the present invention has a codec unit 2 for processing a voice signal inputted and outputted through the handset 1, and a call signal inputted and outputted through the codec unit 2 as an RF signal. The MSM unit 3 and the MSM unit 3 process retransmission of the channel allocation request message by checking the retransmission time according to the class assigned to the communication device or transmitting the call to another communication device or failing the call. It includes a memory unit 6 for storing the retransmission time received according to the subscriber class from the base station system unit 5, including the various processing information of the terminal (4).

One end of the MSM unit 3 is connected to a key panel unit 7 for inputting a function setting signal of a user and an LCD panel unit 8 for displaying the execution contents of the terminal 4 to the outside.

Next, a control method applied to the apparatus of the present invention as described above will be described.

The method of the present invention proceeds to the step S2 of receiving the random delay time information in the initial state S1 as shown in FIG. 3 to receive the random delay time information according to the class of the terminal subscriber from the base station when the terminal registers with the base station. Save and run the Hos diagram. After the random delay time information receiving step S2, the call signal failure determining step S3 is performed to determine whether the current call connection attempt has failed. At this time, if the terminal is successful in the call connection as a result of the determination in the call signal failure determination step (S3) proceeds to the general call processing function execution step (S4) and executes the general call processing function.

That is, when power is applied to the terminal 4 of the present invention, the MSM unit 3 of the terminal 4 proceeds to an initialization state, forms necessary information from the internal memory unit 6, executes the initialization process, and then waits. Proceed to state. At this time, the MSM unit 3 of the terminal 4 recognizes when the user inputs a telephone number through the key panel unit 7 and presses a call button, and the user inputs the telephone number to the memory unit 6. In addition to the storage, the system accesses the base station system unit 5 through the access channel, and then transmits an outgoing signal to the corresponding telephone number. Then, the base station system unit 5 processes the outgoing signal transmitted from the terminal 4 to transmit the incoming signal to the counterpart terminal 4 to form a call. That is, when a user of the terminal 4 inputs a voice signal through the handset 1, the codec unit 2 of the terminal 4 signals the voice signal input through the handset 1 and performs an MSM unit. Enter (3). The MSM unit 3 of the terminal 4 wirelessly processes the voice signal input through the codec unit 2 and transmits the voice signal to the counterpart terminal 9 via the base station system unit 5 so that a normal call can be made. Is achieved.

However, if the terminal fails to connect the call as a result of the determination during the call signal failure determination step (S3), the process proceeds to the retransmission delay time calculating step (S5) and the terminal subscriber retransmits according to the random delay time information received from the base station at the time of registration. Calculate the delay time. After checking the retransmission delay time after the retransmission delay time calculating step (S5) and checking the calculated retransmission delay time, if the corresponding retransmission time is reached, the channel allocation request message is transmitted through the random access channel. Resend to system part. The call retrying step may further include a repetitive call transfer process of returning to the retransmission delay time calculating step and repeatedly executing the call transfer process when the retrying call connection fails again.

That is, the MSM unit 3 of the mobile communication terminal 4 receives the retransmission delay time value according to the subscriber class from the base station system unit 5 when the first system is turned on and registers with the adjacent base station system unit 5. The memory unit 6 is stored in the memory unit 6. In addition, the MSM unit 3 of the mobile communication terminal 4 transmits a channel allocation request message to the base station system unit 5 through the random access channel shown in FIG. At this time, when the call view fails due to the overload of the terminal 4 colliding with the channel allocation request message of the other terminals 9 due to the overload of the base station system unit 5, the MSM unit of the terminal 4 ( 3) reads the random delay time information received from the base station system unit 5 and stored in the memory unit 6 at the time of registration of the terminal 4 and drives an internal timer (not shown) according to the read random delay time. Check if the random delay time is reached. At this time, the MSM unit 3 of the terminal 4 retransmits the channel allocation request message to the base station system unit 5 through the random access channel when the time of the driven timer reaches the set random delay time. Will be allocated. However, the MSM unit 3 of the terminal 4 resets the internal timer again when the call connection fails again and confirms whether the timer time for checking reaches the random delay time and then retransmits the call. .

Therefore, since the call connection is performed by differentiating call retransmission time for each subscriber of the call failure terminal as described above, the base station system unit 5 can smoothly perform call channel allocation according to the subscriber class.

As described above, according to the present invention, when a channel allocation request message is retransmitted according to a call allocation failure, the call retry time is differentiated to be transmitted for each terminal subscriber, so that the service per subscriber according to the call retry can be differentiated accordingly. It has the merit to execute high quality call service according to the grade of terminal subscriber.

In addition, according to the present invention, since the retransmission time is differentially executed for each subscriber, the overload rate according to the call allocation of the base station is also significantly reduced.

Claims (2)

In a mobile communication system for transmitting a call connection signal through a random access channel, If the call connection attempt fails, the MSM unit checks the retransmission time according to the class assigned to the mobile station and retransmits the channel allocation request message, and the subscriber station from the base station system unit for the first call connection by the MSM unit. A mobile communication terminal with a differential retransmission function, characterized in that it comprises a memory unit for storing the retransmission time given. When the mobile communication terminal initially registers as a neighbor base station, it receives the random delay time information according to the class of the subscriber of the terminal from the base station, stores the random delay time information, and executes a call diagram. If the attempted call connection fails, the retransmission delay time calculating step of calculating the retransmission delay time of the terminal subscriber according to the random delay time information received from the base station at the time of registration, and the retransmission delay time calculated after the retransmission delay time calculating step After checking, if the corresponding retransmission time is reached, a call retrying step of retransmitting a channel allocation request message through a random access channel to the base station system unit; and if the call connection retryed after the call retrying step fails again, the retransmission is performed. The call transfer process is repeated by returning to the delay time calculation step. A control method of a mobile communication terminal equipped with a differential retransmission function, characterized in that consisting of a repeating call transmission process.

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