KR0121965B1 - Method for accessing the time slot of the portable terminal - Google Patents

Abstract

A time slot connection method of the portable terminal where grants the authority in accordance with observing the use situation of the specific time slot in the station for connecting the time slot between the portable terminal and the station.

Description

Time slot connection method of portable terminal

1 is a schematic diagram of a portable terminal employing a DECT method,

2 is a flowchart of a time slot access method according to the present invention in a portable terminal.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal employing a dec (DECT) method in a wireless telephone network system, and more particularly, a portable terminal for controlling a portable terminal to quickly access a time slot of a fixed station. It relates to a time slot connection method of.

In general, a wireless telephone network system wirelessly establishes a network between a fixed station (or base station, hereinafter referred to as a fixed station) and a portable terminal (or mobile phone) to transmit and receive data. A portable terminal employing a DECT method for transmitting and receiving digital data is a type of mobile phone used in such a wireless telephone network system and is used for personal mobile communication in Europe.

When the mobile terminal of the deck type is requested to access a number corresponding to a specific subscriber number from the operator, a setup request is made at the network layer, a setup request is received at the data link layer, and then a station adjacent to the MAC (Medium Access Control) layer is first. If there is an available time slot by checking whether there is an available time slot and then if there is an available time slot, BEARER_REQUEST is sent to the fixed station among MAC frames, and if the signal is normally transmitted to the fixed station, BEARER_CONFIRM is received from the fixed station. With a time slot in the wireless channel secured, DL_ESTABLISH frame of data link control is transmitted to start connection with the exchange.

However, if the time slots of the fixed station are all in use and there are no empty time slots, the terminal continues to transmit Radio Signal Strength Indicator (RSSI) from the fixed station transmitted over the B channel until a time slot that is not in use is detected. If a time slot not used is detected as a result of the inspection, and a time slot not used is detected, a BEARER_REQUEST is requested to the corresponding time slot of the fixed station through the A channel, and an attempt is made to connect with the available time slot. At this time, however, if there are a plurality of terminals to be connected, the RSSI signals transmitted through the B channel are searched for each other to use the timeslot, and BEARER_REQUEST is requested according to the search results. This causes BEARER_REQUEST to cause a conflict with each other. As a result, the portable terminal must not only attempt to reconnect, but also has an inconvenience after delaying for an unpredictable time.

Accordingly, an object of the present invention is to provide a method for quickly obtaining a right of use by observing a use state of a specific timeslot in a fixed station when a portable terminal and a fixed station timeslot are connected in a telephone network system.

In order to achieve the above object, a method according to the present invention includes a time slot connection method of a portable terminal of a wireless telephone network system having a fixed station and a portable terminal; If the nearest station is selected in the mobile station in the standby mode, an investigation process for investigating whether there is an unused time slot among the time slots in the selected station; If the unused timeslot does not exist by the inspection process, searching whether the MAC frame bearer release frame is transmitted for a specific timeslot; Attempting to access a corresponding time slot when either an unused time slot exists or a transmission of a bearer release frame is detected during the investigation; Performing registration with the selected fixed station when the connection is completed during the connection attempt process; When the registration is completed, the step of performing the connection and disconnection over the call by any one of the paging signal and the connection request signal of the operator, characterized in that it comprises.

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

1 is a schematic diagram of a deck type portable terminal used in a wireless telephone network system, the power supply unit 101 for supplying power of the terminal, the key data input unit 102 for applying a control command of the operator, and the full function of the terminal. The central processing unit 103 for controlling the control, and in particular for controlling the connection with the timeslot of the fixed station, the microphone 107 for converting and outputting the operator's voice signal into an electrical analog signal, the central processing unit 103 Controlled by the coded signal processing unit 108 and the central processing unit 103 to perform a coded signal processing so as to change the signal output from the microphone 107 to ADPCM (ADaptive Pulse Code Modulation) data used in the decect standard. A decoded signal processor 105 for converting the received encoded speech signal into PCM data and performing decoded signal processing to convert the received speech signal into an analog signal; It is configured to include a speaker 106, an EEPROM (Electrically Erasable ROM) and ROM and RAM for outputting the voice signal output from the luxury signal processing unit 105 as a voice signal that can be recognized by the terminal operator to perform various operations of the terminal. A memory 104 for storing the parameters for the memory 104; a transmission processor 109 for processing such that a high frequency signal of 1.8 GHz is generated, a synthesized high frequency signal and an ADPCM encoded voice signal, and amplification of the synthesized signal are received. Receives the data output from the reception processing unit 111 and the transmission processing unit 109 which perform reception processing such as low noise amplification for the signal, intermediate frequency conversion processing, and extraction of the original signal transmitted from the intermediate frequency in the air and in the air. The antenna 110 is configured to output the received data to the reception processor 111.

2 is a flowchart illustrating a method of connecting to a time slot of a fixed station according to the present invention in a deck type portable terminal configured as shown in FIG.

Next, the operation of one embodiment according to the present invention will be described with reference to FIGS. 1 and 2.

When the power of the terminal is turned on by the terminal operator in step 201, the power supply unit 101 supplies power to the central processing unit 103. Accordingly, the central processing unit 103 proceeds to step 202 while controlling power supply to the peripheral processing circuit, and reads an initial value for each hardware in the terminal stored in the memory 104, and uses the terminal to read the initial value. Initialize each hardware in the

In step 203, the station is selected closest to where the terminal is currently located. Here, the selection of the adjacent fixed station is the same way as before, to investigate the reception strength of all 10 radio channels from radio channels 0 to 9, and to select the station which transmits the strongest radio signal.

When the fixed station is selected as described above, the central processing unit 103 proceeds to step 204 to check whether there is an unused time slot by the RSSI signal received from the receiving processing unit 111 through the B channel. As a result of the investigation, if there is no unused timeslot, the process proceeds to step 205 to select a specific timeslot and then to investigate the MAC frame of the selected timeslot. At this time, the time slot is selected in a random manner, and the investigation process is performed by signal processing through the transmission processor 109, the antenna 110, and the reception processor 111. In step 206, the bearer release (bearer_Relese) transmitted through the A channel of the MAC frame is checked. The reason for investigating whether bearer release is sent out is because the termination of the time slot in use is performed by the bearer release confirm (Bearer_Release_Confirm) signal from the fixed station for transmitting bearer release request (Bearer_Release_Request) signal through the MAC frame on the terminal side. to be.

If the bearer release frame is received from the fixed station (not shown) in step 206, the process proceeds to step 207 and attempts to connect with the timeslot selected in step 205. FIG.

However, if the bearer release frame is not received, the process returns to step 204 to search for a time slot to access. The search for the bearer release frame in step 206 is performed in units of frames. If the connection attempt in step 207 is made, the process proceeds to step 208.

On the other hand, if there is an unused time slot in step 204, the process proceeds directly to step 207, and attempts to connect to an empty time slot, and then proceeds to step 208.

In step 208, it is checked whether the connection is successful according to the connection attempt of step 207. In this case, if the connection fails, steps 204 through 207 are repeatedly performed to return to step 204 to access the time slot.

However, if it is determined in step 208 that the connection is successful, the process proceeds to step 209 to register with the fixed station selected in step 203 through the corresponding time slot. Upon completion of registration, it is checked whether there is a PAGING signal from the fixed station or a connection request signal from the operator.

To do this, the process proceeds to step 210 and determines whether a paging signal exists. At this time, if the paging signal is present, connection is required from another terminal, and the process proceeds to step 211 to perform a process of connecting and releasing a call path for a call. Here, the connection and disconnection process by call is performed in the same manner as before, in the order of MAC, DLC (Data Link Control), NETWORK, and NETWORK, DLC, MAC by disconnection of any one of the terminals. Release to currency in hierarchical order.

When the call processing ends, the process proceeds to step 212 and the state of the terminal is checked. Here, the internal inspection of the terminal checks whether there is a problem with the battery mainly used as a power supply, and warns the operator to recognize when an error occurs, or selects an adjacent fixed station based on reception strength as performed in step 203. Inspect the internal state of the terminal. When the inspection of the internal state of the terminal is completed, the flow proceeds to step 213 to check whether the power of the terminal is maintained on. At this time, if the terminal is powered off, all the operations are terminated. However, if the power source remains on, the flow returns to step 204 to repeat the process.

However, if the paging signal does not exist in step 210, the process proceeds to step 214 to check whether the connection request signal generated by the terminal operator. As a result of the check, if a connection request signal is generated, the flow returns to step 211 and proceeds with the connection and release process for the call as described above. On the other hand, if the access request control command by the operator is not authorized in step 214, the process proceeds to step 212 and checks the state inside the terminal as described above.

As described above, in the wireless telephone network system, the portable terminal checks whether the bearer release frame is transmitted among the MAC frames of the time slot when it is difficult to connect the time slot of the fixed station to the connection attempt of a plurality of terminals. By attempting to connect, there is an advantage that the use of timeslots can be secured more quickly.

Claims (3)

A time slot connection method of a portable terminal of a wireless telephone network system having a fixed station and a portable terminal; An investigation process for investigating whether there is an unused time slot among time slots in the selected fixed station when the portable terminal is selected in the standby mode; Searching whether the MAC frame bearer release frame is transmitted for a specific time slot when there is no unused time slot by the investigation process; Attempting to access a corresponding time slot when either an unused time slot exists or the transmission of the bearer release frame is detected during the investigation; Performing registration with the selected fixed station when connection is completed in the connection attempt process; When the registration is completed, the time slot access method of the portable terminal comprising the step of performing the connection and disconnection to the call by any one of the paging signal and the connection request signal of the operator. The method of claim 1, wherein the method for accessing a time slot of the portable terminal further comprises repeating a process of checking whether there is an unused time slot when the access attempt made during the access attempt fails. Time slot connection method of a portable terminal. The method of claim 1, wherein the bearer release frame transmission search is performed in units of frames.