KR20000002387A - Interference indication of wireless local loop terminal - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

A display method of a wireless subscriber network terminal.

I. The technical problem to be solved by the invention

A wireless subscriber network terminal implements a method for notifying a user of interference caused by an adjacent channel.

All. Summary of Solution of the Invention

The wireless subscriber network terminal examines the reception field strength of the adjacent channel and displays the interference level by the reception field strength through a display unit.

la. Important uses of the invention

It is used in a wireless terminal.

Description

Method of displaying interference degree of wireless subscriber network terminal

The present invention relates to a display part display method of a wireless subscriber network (WLL: "wireless subscriber network") terminal, and more particularly, to display the degree of interference (hereinafter referred to as "interference") of the wireless subscriber network terminal. It is about a method.

Typically, wireless subscriber network terminals display various functions. The display function includes displaying received electric field strength (RSSI) of radio waves, the current time, date, and the like. However, in such a display method, the degree of interference by adjacent channels is not known because the degree of interference by adjacent channels is not displayed together. Thus, when the reception sensitivity is not good simply, there is a problem that the terminal is poorly recognized or incorrectly recognized as a failure in call connection between base stations.

Accordingly, an object of the present invention is to provide a method for informing a user of an interference level in a wireless subscriber network terminal.

In order to achieve the above object, the present invention provides a wireless subscriber network terminal for checking whether a call is connected, if the call is connected, measuring the received electric field strength of the adjacent channel, and proportioning the icon to the display unit according to the measured received electric field strength. If the call is disconnected, the received field strength of the adjacent channel is measured again.

1 is a block diagram of a wireless subscriber network terminal according to the present invention

2 is a display screen showing the degree of interference in the wireless subscriber network terminal according to an embodiment of the present invention

3 is a control flowchart for displaying an interference degree in a wireless subscriber network terminal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In addition, specific details appear in the following description, which is provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific matters. Will be self-evident. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a wireless subscriber network terminal according to the present invention.

The control unit 100 is a mobile station modem (MSM) and is a core device of a code division multiple access (CDMA) type personal communication system (PCS) terminal including an Intel 80l86 CPU CORE. MSM is 176 Pin and has CPU, RAM, ROM, EEPROM memory inside, and controls the whole terminal by receiving clock from baseband unit (BBA: BaseBand Analog) 140. The ROM stores a program for controlling a terminal, and the RAM stores flag information, call processing data, time data, and the like. EEPROM stores name, power level, volume level, telephone number, etc. The controller 100 controls overall operations of the transceiver 110, the baseband unit 120, the display unit 130, and the key input unit 140. The transceiver 110 transmits and receives a radio wave through an antenna, and has a power amplifier, a driver amplifier, an up / down converter, a buffer, a TX / RX IF AGC AMP, an RF BPF (Radio Frequency Band Pass Filter), and an IF SAW BPF. The power amplifier is an amplifying device capable of increasing a signal in order to send a sufficient signal from a terminal to a base station through an antenna. The DRIVE AMP is a device that inputs enough signals because the efficiency of the POWER AMP is lowered if it does not supply enough signals to allow the power amp to be fully amplified. UP / DOWN CONVERTER is a device to up / down the frequency output during transmission and reception. The BUFFER is used as an amplifier to input to the LOCAL input of the UP CONVERTER while the phase is locked between the VCO (Voltage Controlled Oscillator) and the Phase Lock Loop (PLL). In addition, the transceiver 110 includes a duplexer (DUPLEXER) that separates the received signal from the transmitted signal, and a THERMISTOR for compensating for the temperature change. The baseband unit 120 is a BBA (BASE BAND ANALOG) located between the RF processing and the digital processing. That is, the transceiver 110 and the controller 110 are located in the middle of the process of being directly connected to the controller. The signal received through the transmitter / receiver 110 passes the IF AGC AMP, passes through a filter, is digitally converted, and sent to the controller 100. Transmission through the transmitter / receiver 120 modulates the digital signal received from the controller 100 into an analog signal and is then converted into an IF signal through each filter. The internal configuration of the baseband unit 120 includes an analog digital converter (ADC), a digital analog converter (DAC), a low pass filter (LPF), and a divider VCO. The display unit 130 is a display device such as a liquid crystal display (LCD). Under the control of the controller 100, the display unit 120 displays the status of the wireless terminal or the progress of the program, and a message requesting registration according to the present invention. The key input unit 140 includes a plurality of numeric keys and function keys for performing various functions, and outputs key data to the controller 100 by an external operation.

2 is a display screen showing an interference level in a wireless subscriber network terminal according to an embodiment of the present invention.

3 is a control flowchart for displaying an interference degree in a wireless subscriber network terminal according to an embodiment of the present invention.

In step 300, the controller 100 checks whether a call is connected. If the call is connected, proceed to step 310; otherwise, continue checking whether the call is connected. The call connection is when the user makes a call and the other party answers, and when the call message is received and the user responds to the call message. In step 310, the controller 100 analyzes data received through the adjacent channel of the allocated communication channel while the call is made through the communication channel and measures the received electric field strength of the adjacent channel. In this case, the measured electric field strength is divided into five stages, and the display of the icon through the display unit 130 is also divided into five stages. The method for measuring the received electric field strength is disclosed in the previously filed application No. 97-76096 as a known technique. In step 320, the control unit 100 displays an icon on the display unit 130 in accordance with the measured interference intensity of the received electric field strength of the adjacent channel. In step 330, the controller 100 checks whether the call is disconnected. If the call is disconnected, the interference display ends, and if the call continues to be connected, the flow proceeds to step 310. Therefore, while the call is connected, the degree of interference is continuously measured and displayed on the display unit 130 step by step. As shown in FIG. 2, the icon displayed through the display unit 130 is divided into five levels and displayed according to the degree of interference. When the interference is the highest, five icons are displayed and the number of icons decreases as the interference gradually decreases.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention displays the degree of interference in the wireless subscriber network terminal, so that the user can obtain more accurate and more information, and can predict the deterioration of the call quality due to the interference.

Claims (3)

In the display method of a wireless subscriber network terminal, Checking that the call is connected, If the call is connected, the process of measuring the received field strength of the adjacent channel, Method of displaying the interference level of the wireless subscriber network terminal, characterized in that the step of incrementally displaying the icon on the display unit in accordance with the measured received electric field strength. The method of claim 1, After the process of displaying the received electric field strength, To check if the arc is broken, And if the call is not disconnected, returning to the process of measuring the received electric field strength of the adjacent channel again. The method of claim 1, And displaying the icon in five steps.