KR0148891B1 - Detaching method for a cellular phone - Google Patents

Abstract

The present invention sends more information about the power on / off state of the cellular phone to the base station so that the base station does not page the incoming call to the cellular phone in the current power off state so that other subscribers have more opportunities for channel allocation. The present invention relates to a cell phone's DETACH method, which allows the mobile base station to paging to occupy the channel even when the cellular base station is powered off. Since the probability of receiving the paging of the cellular phone is relatively reduced and the base station is also loaded, according to the present invention, the cellular phone transmits the detach information about the current power-off state to the base station along with the terminal number of the cellular phone. And the base station that confirmed this, the cell phone To delete the phone number from the database of the determination by the base station so that it is not the paging and to increase the chance that the channel power is allocated to the other cellular phone of the on-state to further extend the service area.

Description

How to Detach Cell Phones

1 is a block diagram of a typical cellular phone.

2 (a) is a call processing flow diagram of an outgoing cellular phone.

2 (b) is a call processing flowchart of an incoming cellular phone.

3 is a diagram illustrating a protocol message for the method of fetching the cellular phone of the present invention.

4 is a flowchart illustrating an operation for performing a detach function of the cellular phone of the present invention.

(a) is a flow chart of operation in a cellular phone.

(b) is an operation flowchart at the base station.

* Explanation of symbols for main parts of the drawings

1: Duplexer 2: Receiver

3: transmitter 4: frequency synthesizer

5: central processing unit 6: first memory unit

7: 2nd memory part 8: 3rd memory part

9 key portion 10 liquid crystal display portion

11: voice processing unit 12: speaker

13: microphone

The present invention sends more information about the power on / off state of the cellular phone to the base station so that the base station does not page the incoming call to the cellular phone in the current power off state so that other subscribers have more opportunities for channel allocation. It relates to the Detach method of a cell phone that allows to go back.

First, the configuration of a general cell phone will be described with reference to FIG.

A duplexer 1 for transmitting and receiving a call message through an antenna ANT, a receiver 2 for receiving a call signal and a call message of a counterpart through the duplexer 1, and a duplexer 1 of the user. A transmission unit 3 for processing call signal processing and a telephone message, a frequency synthesis unit 4 for synthesizing frequencies of transmission and reception signals according to reference frequencies in processing the transmission and reception signals, and central processing for controlling the entire system The device 5, the first memory unit 6 in which the operating program of the system is stored, the second memory unit 7 in which the signal processing program of the system is stored, the Hangul and special characters, and the telephone number. A third memory section 8 having stored therein, a key section 9 for operating various functions of the system, a liquid crystal display section 10 for displaying a telephone number pressed by the key section 9, and a signal transmitted and received Digitalize or The voice processing unit 11 for analogizing and signal processing, the speaker 12 for inputting a signal of the other party from the voice processing unit 11 and outputting the voice, and the voice processing unit 11 by converting the user's voice into an electrical signal. It is configured to include a microphone 13 for transmitting to.

The operation of the cellular phone having the above configuration is as follows.

The reception signal of the other party input through the antenna ANT and the duplexer 1 is adjusted by the frequency synthesizer 4 at the receiver 2 and input to the central processing unit 5. Then, the signal is analogized through the voice processing unit 11 and output to the speaker 12. On the other hand, the transmission signal is transmitted from the voice processing unit 11 to the transmission unit 2 through the digital processing control unit 5 through the microphone 13. Then, it is output to the antenna ANT through the duplexer (1).

Here, when the user wants to make a call to the cellular phone, when the telephone number is pressed through the key unit 9, the liquid crystal display 11 displays characters according to a program stored in the third memory unit 9.

The cellular network and the cellular phone, which are configured and operated as described above, operate according to a protocol specified by the EIA / TIA-553 communication standard.

2 (a) to (b) show call processing for outgoing and incoming calls on a cellular phone.

First, a process in which call processing is performed by a wireless base station and a wireless switching station when another telephone is called in the cellular phone will be described with reference to FIG. 2 (a).

To make a call on the cellular phone, press the other party's phone number and press the [SEND] button to receive the outgoing signal from the wireless base station and send it to the wireless switching center. The wireless switching center then selects an empty channel for the call path. When the voice channel is allocated to the wireless base station to transmit the voice signal through the cellular phone, the wireless base station notifies the cellular phone that the voice channel has been designated. In addition, the wireless base station sends a supervisor audio tone (SAT) for checking the status of the voice channel allocated to the cellular phone, and the cellular phone also sends a supervisor audio tone (SAT). Thus, if the audio signal is normal, a channel designation completion signal is sent to the wireless switching center. Accordingly, the wireless switching center sends a call signal to the other party's phone and simultaneously transmits a call tone to the cellular phone.

Next, a process in which the cellular phone is received by the wireless base station and the wireless switching center when another telephone calls the cellular phone will be described with reference to FIG. 2 (b).

When the other party calls the cellular phone, the wireless switching center receives the ringing tone of the other party and sends a page message for the incoming signal to the wireless base station to which the cellular phone is subscribed. Accordingly, the wireless base station also sends a page message to the cellular phone. At this time, the cellular phone sends a page response message for its own location information and incoming response to the wireless switching center through the wireless base station. The wireless switching center selects an empty channel to inform the cellular phone that a voice channel has been designated. Accordingly, the wireless base station sends a supervisor audio tone (SAT) for checking the voice signal state of the voice channel. Cell phones also send supervisor audio tones (SAT) to control the state of voice signals. Thus, when the channel designation is completed, the radio base station sends a channel designation completion message to the radio switching center. The wireless base station then sends a selection message to the cellular phone indicating that the call has been made. At the same time, the ring rings and the on-hook signal is transmitted by ringing to the other party's phone through the wireless switching center. When the ring rings and the subscriber of the cellular phone goes off-hook, the off-hook signal is sent to the other party's phone through the wireless switching center. Thus, the cellular phone is received and a call path is formed.

In this way, several cellular phone terminals are registered in one wireless base station, and several wireless base stations are connected to one wireless switching center. In addition, since a paging channel allocated to each wireless base station is shared by one or more cellular phone terminals, when a subscriber wants to send information on a call request, incoming call request, or location registration to a wireless base station at the same time, Other subscribers will not be able to access the channel for the call.

In addition, as shown in FIG. 2 (b), paging is preferentially performed unconditionally regardless of the state of the cellular phone. That is, since paging for incoming calls is to be performed unconditionally regardless of the power on / off of the cellular phone, the probability that the cellular phone of another subscriber in the power-on state can be paged at that time is relatively reduced. The base station is also loaded.

In view of the above, the present invention allows the cellular phone to send the detach information regarding the current power-off state to the base station together with the terminal serial number of the cellular phone, and the base station confirming this determines the telephone number of the corresponding cellular phone. It can be deleted from the database to prevent paging, increasing the chance of channel allocation for other cellular phones in the power-on state.

Detach method of the cellular phone of the present invention that satisfies the above features, the first step of detecting a power-off state in the cellular phone terminal and transmitting a deetch message to the base station; A second step of confirming whether the detach message is received at a base station; A third step of confirming a serial number, a phone number, and detach information (ESN / MIN / detach) of the cellular phone terminal which has sent the detach message if the detach message is received in the second step; If it is confirmed in the third step comprises a fourth step of not paging the phone number.

The detach message transmitted to the base station according to the power-off state in the cellular phone is programmed in an empty area in the protocol message according to the mobile communication standard.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

3 is a block diagram of a protocol message for the method of fetching the cellular phone of the present invention.

These are all serial numbers of each terminal programmed according to the EIA / TIA-553 standard, which is a mobile communication standard, and telephone numbers and detach commands registered therein.

Such information is transmitted together when the detach message is transmitted to the base station, so that the base station can identify which cell phone terminal the detach message is transmitted from.

4 illustrates a process of actually performing a detach function using a protocol message having the above configuration.

FIG. 4 (a) shows an operation performed by a terminal of a cellular phone, and FIG. 4 (b) shows an operation performed by a base station.

It is checked whether the power-off button is pressed while the cellular phone in which the information on the detach message is programmed is normally waiting for a call (step S1). When the power-off button is pressed in step S1, the cellular phone terminal detects this and transmits a detach message to the base station (step S2).

The base station normally waits and checks whether a detach message has been received (step S3). When the detach message is received in step S3, after confirming the serial number (ESN), the phone number (MIN), and the detach information (detach) of the terminal of the cellular phone accordingly received (step S4), the corresponding cellular No paging is performed for the terminal of the phone (step S5). That is, the phone number of the corresponding cellular phone is deleted from the base station database so as not to be paging.

At this time, when the cellular phone in the power-off state is turned on, the base station checks this and makes paging again.

This increases the probability of securing a channel to the cellular phone in the power-on state.

As described above, according to the present invention, the load of the base station is reduced by selecting only the fetched cellular phone and not paging the incoming portion of the currently busy cell phone, and assigning a channel to another cellular phone in the power-on state. The opportunity to be improved, thereby expanding the communication service area.

Claims (1)

A first step of detecting a power-off state in a cellular phone terminal having a detach command in a protocol message according to a mobile communication standard and transmitting a detach message to a base station; A second step of confirming whether the detach message is received at a base station; A third step of confirming a serial number, a phone number, and detach information (ESN / MIN / detach) of the cellular phone terminal which has sent the detach message if the detach message is received in the second step; And a fourth step of disabling paging of the telephone number when the third step is confirmed.