KR20030057650A - method for processing a cordless channel allocation of keep-phone - Google Patents

Abstract

PURPOSE: A method for processing wireless channel allocation of a key phone system is provided to process a channel allocation of a wireless terminal at a wireless interface card by using information of the wireless terminal, thereby enhancing a call processing characteristic of the key phone system. CONSTITUTION: An initial state(S1) is progressed to a call origination request discrimination process(S2). Then, when a call origination request signal is inputted, the call process request discrimination process is progressed to a call origination information transmission process(S3). Then, the corresponding wireless interface unit received the call origination transmits a call processing information message to a control unit of a key phone, so that the allocation of the call channel designated by itself is notified. Thereafter, the call origination information transmission process is progressed to a call origination processing process(S4), so that a voice channel is allocated according to a call processing information message, i.e., a message included voice channel information and wireless terminal information received from the wireless interface unit received the call origination and then the call origination process is executed.

Description

Method for processing a cordless channel allocation of keep-phone}

The present invention relates to a method for processing wireless channel assignment of a key phone system. In particular, in a key phone system having a plurality of wireless interface cards, the wireless terminal of the key phone system processes channel assignment of the wireless terminal using the information of the wireless terminal. It relates to a channel assignment processing method.

In general, mobile communication systems have been rapidly developed as the industrial society has spread rapidly. Especially in the early 1980s, in North America, the service area was divided into hexagonal cells of several km to several ten kilometers in diameter, and then in the geographically separated cells. The mobile communication system has grown rapidly by using a cellular mobile communication system that uses the same frequency channel repeatedly and implements a radio channel switching function between cells as the subscriber moves.

In recent years, a simple switch system that incorporates a wireless transmission / reception function into a key phone system and links with a mobile communication terminal is rapidly being used. However, the type of key phone equipped with the above wireless function, especially in the European region, may include a system called a digital european cordless telephone (DECT). The DECT has 10 voice connections for 12 voice connections. It has a frequency division channel, and each channel is designed to transmit two 32Kbps data.

On the other hand, the conventional DECT keyphone as described above can be composed of a fixed device 70 largely connected to a wire, and a plurality of handsets 71 to communicate wirelessly with the fixed device 70, wherein the fixed The device 70 includes a wired signal processor 72 for processing a predetermined signal for a communication signal input and output through a wired line (not shown), and wirelessly interfacing a wireless call signal of the DECT handset 71 via a base station 73. A central processing unit 75 for controlling overall functions of a DECT type key phone system, including a wireless interface unit 74A-N, a call channel assignment function of the wireless interface unit 74A-N, and the wireless interface unit The wireless subscriber unit 76, which processes the call processing signal inputted from 74A-N according to the function control signal of the central processing unit 75, and stores the call processing information according to the function control signal of the central processing unit 75. And a memory unit 77.

Here, the wireless interface unit 74A-N is formed of, for example, approximately eight base stations and 32 channels.

On the other hand, looking at the operation of the conventional key-phone as described above, if you want to make a call from the wireless handset 71, when the call request signal is sent, the radio interface unit 74A of the fixing device 70 receives the call request signal. The call setup request message including the terminal information is input to the central processing unit 75. Then, the central processing unit 75 searches whether the voice channel is empty through the memory unit 77, and if there is a channel with the empty voice channel as a result of the search, the terminal information of the wireless handset currently input to this channel. It stores and outputs the information on the channel to the wireless subscriber unit 76. The wireless subscriber unit 76 allocates the channel according to the voice channel allocation control signal input from the central processing unit 75 and transmits the channel allocation completion message to the central processing unit 75. Then, the central processing unit 75 transmits a call setup confirmation message to the wireless interface unit 74A when the channel is allocated through the process, and accordingly, the wireless interface unit 74A makes a voice call through the assigned voice channel. Run That is, the voice call signal carried in the wireless handset 71 is transmitted to the wired signal processor 72 in order to connect to the corresponding terminal 78 connected to the corresponding destination, for example, the wire. Then, the wired signal processing unit 72 processes a predetermined voice call signal and transmits a call signal to the corresponding terminal, thereby executing a normal call function. However, if there is no voice channel to be newly allocated to the memory unit 77 during the call sending process, the corresponding wireless interface unit 74A does not execute call processing and transmits a corresponding signal to the handset 71.

In addition, the call reception process of the key phone is also processed through a process similar to the call call process.

Here, when a voice channel change (roaming) occurs from the wireless interface unit 74A to the wireless interface unit 74B during the call origination process of the key phone, the wireless interface unit 74B is voiced to the central processing unit 75. Send a channel change message. Then, the central processing unit 75 searches through the memory unit 77 to see if there is an empty voice channel. At this time, when there is no voice channel empty in the memory unit 77, the memory unit 77 transmits a message indicating that there is no voice channel to the central processing unit 75. Therefore, the central processing unit 75 transmits the voice channel change failure message to the wireless subscriber unit 76 and the corresponding wireless interface unit 74B. However, if there is an empty voice channel in the memory unit 77, a message informing the fact is transmitted to the central processing unit 75. Then, the central processing unit 75 receives this and transmits the information of the terminal associated with the current roaming to the memory unit 77. In addition, the memory unit 77 receives information of the terminal related to the current roaming input from the central processing unit 75, stores the information on the currently empty channel, and transmits a processing completion message to the central processing unit 75. Then, the central processing unit 75 transmits a voice channel assignment cancelation message to the memory unit 77 to delete the wireless terminal information stored in the pre-assigned voice channel. In addition, the memory unit 77 deletes the information of the pre-allocated wireless terminal stored in the corresponding voice channel in the wireless terminal information memory for each voice channel and transmits a deletion completion message to the central processing unit 75. Then, the central processing unit 75 transmits a channel change completion message to the wireless subscriber unit 76 according to the deletion completion message of the memory unit 77. Accordingly, the wireless subscriber unit 76 allocates a channel to the new wireless interface unit 74B, and then transmits a voice channel change completion message to the central processing unit 75. Then, the central processing unit 75 transmits the voice channel change completion message to the newly allocated wireless interface unit 74B and executes call processing through the newly set voice channel.

However, in the conventional key phone system as described above, the wireless interface unit needs to perform voice processing by allocating a voice channel through the central processing unit and the wireless subscriber unit. If the call channel is not allocated from the central processing unit, the wireless interface unit can perform call processing at all. In addition, since the wireless interface unit needs to perform voice processing through a complex process through the central processing unit and the wireless subscriber unit, a call connection delay occurs while roaming until the channel is allocated. When loading occurs, the problem is that the connection of the call is not made properly.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems. In the keyphone system having a plurality of wireless interface cards, the channel assignment of the wireless terminal is processed by the wireless interface card using the information of the wireless terminal. Since there is no need to assign a channel by call processing with a channel, an object of the present invention is to provide a radio channel assignment processing method of a key phone system, which significantly improves the call processing characteristics of the key phone system.

Another object of the present invention is that even when roaming, the channel assignment is processed from the roaming wireless interface card without being allocated a call by the wireless subscriber call processing means, so that no delay or disconnection due to voice channel assignment occurs, thereby causing the keyphone system. To provide a radio channel assignment processing method of a key phone system significantly improved operation reliability of the.

The present invention for achieving the above object is a call processing request confirmation step of confirming the call message requested by the key phone system, and determines whether the request signal is input. When it is confirmed that the call origination request signal is input during the call processing request confirmation step, the corresponding wireless interface unit that receives the call origination transmits the call processing information request message to the controller of the key phone to notify the assignment of the call channel designated by the user. The voice channel is allocated according to the call processing information request message received from the corresponding wireless interface unit receiving the call transmission after the calling information sending step and the message including the voice channel information and the wireless terminal information. A call sending processing step of executing a call calling function and an incoming call transmitting step of transmitting a current incoming call message to all wireless interface cards when it is confirmed that a call request request signal is input during the call processing request checking step; After the call transmission step, the corresponding wireless interface receives the call processing information request message. A call forwarding information sending step of transmitting a call channel assignment designated by the user to a control unit of the phone and a voice according to a call processing information request message received from a corresponding wireless interface unit receiving a call reception after the calling call information sending step. When the voice channel change request signal is input during the call reception processing step of allocating a channel to execute the call reception function and during the call processing request confirmation step, the corresponding wireless interface receives the voice channel change information request. The voice channel change information sending step of sending a message to the controller of the key phone to notify the call channel assignment designated by the user, and the voice channel received from the corresponding wireless interface unit receiving the voice channel change information after the voice channel change information sending step. Voice that executes voice channel change function by allocating voice channel according to change information request message Provided is a radio channel assignment processing method of a key phone system, which comprises a channel change information processing step.

1 is an explanatory diagram illustrating a conventional key phone system.

2 is an explanatory diagram illustrating a key phone system to which the method of the present invention is applied.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: terminal 2: CO line card

3: ext. Card 4: universal slot

5: DECT handset 6: base station

7A-N: Wireless Interface Card 8: Key Phone System

9: control unit 10: wireless subscriber call processing unit

11: memory 12: LCD

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

As shown in FIG. 2, a key phone system to which the present invention is applied is provided with a predetermined number of universal slots capable of inserting trunk lines or extension cards 2 and 3 connected to an external public network (not shown) or the terminal 1. 4), a wireless interface card 7A-N inserted into the universal slot 4 and wirelessly interfacing the radio call signal of the DECT handset 5 via the base station 6, and the wireless interface card 7A-. The control unit 9 controls the overall function of the DECT type key phone system 8 including the call channel assignment function of N), and the call processing signal input from the wireless interface card 7A-N. Wireless subscriber call processing unit 10 for processing in accordance with the function control signal of the control unit; and a memory unit 11 for storing the call processing information in accordance with the function control signal of the control unit (9).

Then, one end of the control unit 9 is connected to the LCD 12 which displays the internal processing matters of the key phone system 8 as a display signal.

Here, the radio interface unit 7A-N is formed with, for example, approximately 8 base stations and 32 channels.

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

As shown in FIG. 3, the method of the present invention proceeds from the initial state S1 to the call processing request determination step S2 to determine whether a current call origination request signal is input. At this time, if it is determined during the call processing request determination step (S2), if the call originating request signal is input, the call progress information sending step (S3) is performed, and the corresponding wireless interface unit receiving the call originating the call processing information request message is a key phone. It transmits to the control unit of the notification of the assignment of the call channel designated by itself. After the call origination information sending step (S3), the call origination processing step (S4) is performed, and the call processing information request message received from the corresponding radio interface unit receiving the call out, that is, the voice channel information and the radio terminal information are included. According to the message, the voice channel is allocated to execute the call calling function.

That is, when the wireless handset 5 wants to transmit through the base station 6, when the corresponding call request signal is transmitted, the call request signal is received by the wireless interface card 7A inserted in the universal slot 4 and the control unit ( 9) A call setup request message including voice channel information and terminal information to be allocated is input. Then, the control unit 9 stores the terminal information of the wireless handset 5 in the corresponding voice channel memory of the memory unit 11 requested by the wireless interface card 7A and transmits information on the corresponding channel to the wireless subscriber call processing unit. Output to (10). The radio subscriber call processor 10 allocates the channel according to the voice channel assignment control signal input from the controller 9 and transmits a channel assignment completion message to the controller 9. Then, when the channel is allocated through the above process, the control unit 9 transmits a call setup confirmation message to the wireless interface card 7A. Accordingly, the wireless interface card 7A first transmits the voice channel to which the channel is allocated. Initiate a voice call. That is, the voice call signal carried in the wireless handset 5 is transmitted to the trunk line card 2 in order to connect to the corresponding terminal 1 connected to the corresponding destination, for example, the wire. Then, the CO line card 2 processes the input voice call signal by a certain signal and transmits a call signal to the corresponding terminal 1 to execute a normal call function. However, if there is no voice channel requested by the wireless interface card 7A in the memory unit 11 during the call sending process, the control unit 9 notifies the wireless interface card 7A of the call setup failure message. Accordingly, the wireless interface card 7A does not execute call processing and sends a corresponding signal to the handset 5. Here, the control unit 9 displays the processing items to the outside through the LCD 12.

On the other hand, if it is determined during the call processing request determination step (S2), if the call originating request signal is not input, the process proceeds to the call arrival request determination step (S5) to determine whether the current call arrival request signal is input. At this time, if the call reception request determination step (S5) is determined as a result of the incoming call request signal is sent to the incoming call transmission step (S6) to send the current incoming call message to all the wireless interface card. Then, after the incoming call transmission step (S6) proceeds to the call forwarding information transmission step (S7) and the corresponding wireless interface unit receiving the call reception message transmits the call processing information request message to the controller of the key phone of the call channel specified by the Notify the assignment. In addition, after the call forwarding information sending step (S7) proceeds to the call forwarding processing step (S8) and assigns a voice channel according to the call processing information request message received from the corresponding wireless interface unit that received the call the call response function. Run it.

That is, when the incoming call is received by the controller 9 from the CO card 2 or the extension card 3 of the universal slot 4 or any handset 5 in the above process, the controller 9 sends an incoming call message. In addition to transmitting to the wireless subscriber call processing section 10, this call setup request message is transmitted to all the wireless interface cards 7A inserted in the universal slot 4. At this time, when any one of the wireless interface cards 7A receives a call setup request message, the corresponding wireless interface card 7A inputs a call response message including voice channel information and terminal information to be allocated to the controller 9. . Then, the control unit 9 transmits a call response message to the wireless subscriber call processing unit 10. Then, the wireless subscriber call processor 10 controls the controller 9 to transmit a call setup cancellation message to all the wireless interface cards 7A which did not transmit the call setup response message according to the call response message input from the controller 9. Send a call setup cancel message with). Therefore, the control unit 9 transmits a call setup cancellation message to all the radio interface cards 7B-N which did not transmit the call setup response message. The radio subscriber call processor 10 transmits a channel storage message to the controller 9. Then, the control unit 9 stores the terminal information of the wireless handset 5 in the corresponding voice channel memory of the memory unit 11 requested by the wireless interface card 7A and transmits information on the corresponding channel to the wireless subscriber call processing unit. Output to (10). The radio subscriber call processor 10 allocates the channel according to the voice channel assignment control signal input from the controller 9 and transmits a channel assignment completion message to the controller 9. Then, when the channel is allocated through the above process, the control unit 9 transmits a call setup confirmation message to the wireless interface card 7A. Accordingly, the wireless interface card 7A first transmits the voice channel to which the channel is allocated. Initiate a voice call. That is, the voice call signal carried in the wireless handset 5 is transmitted to the trunk line card 2 in order to connect to the corresponding terminal 1 connected to the corresponding destination, for example, the wire. Then, the trunk line card 2 transmits a call signal to a corresponding terminal by processing a predetermined voice call signal and executing a normal call function. However, if there is no voice channel requested by the wireless interface card 7A in the memory unit 11 during the call sending process, the control unit 9 notifies the wireless interface card 7A of the call setup failure message. Accordingly, the wireless interface card 7A does not execute call processing and sends a corresponding signal to the handset 5.

In addition, if it is determined during the call reception request determination step (S5), if the call reception request signal is not input, the process proceeds to the voice channel change determination step (S9) to determine whether the current voice channel change request signal is input. At this time, if the voice channel change request signal is not input as a result of the determination in the voice channel change determination step (S9), it ends. However, when the voice channel change request signal is input as a result of the determination during the voice channel change determination step (S9), the voice interface change request is received at the corresponding wireless interface where the voice channel change information is received (S10). Send a message to the control unit of the key phone to notify the assignment of the call channel specified by the user. After the voice channel change information sending step (S10), the voice channel change information processing step (S11) is carried out, and the voice channel change information request message received from the corresponding wireless interface unit receiving the voice channel change information is received. Assign the voice channel change function.

That is, when a voice channel change (roaming) occurs from the wireless interface card 7A to the wireless interface card 7N during the call origination process of the key phone 8, the wireless interface card 7N is first controlled by the control unit 9. A voice channel change message including voice channel information and terminal information to be allocated is input.

Then, the control unit 9 transmits the voice channel change message to the wireless subscriber call processing unit 10. The wireless subscriber call processor 10 transmits a channel change message to the controller 9. Then, the control unit 9 transmits a radio channel storage request message to the memory unit 11. In addition, the memory unit 11 searches whether there is an empty voice channel. In this case, when there is no voice channel empty in the memory unit 11, the memory unit 11 transmits a message indicating that there is no voice channel to the controller 9. Therefore, the control unit 9 transmits the voice channel change failure message to the wireless subscriber call processing unit 10 and the corresponding wireless interface card 7N. However, when there is an empty voice channel in the memory unit 11, a message informing the fact is transmitted to the control unit 9. Then, the control unit 9 receives this and transmits the information of the terminal related to the current roaming to the memory unit 11. In addition, the memory unit 11 receives information of the terminal related to the current roaming input from the control unit 9, stores the information on the corresponding channel which is currently empty, and transmits a processing completion message to the control unit 9. Then, the control unit 9 transmits the voice channel assignment cancelation message to the memory unit 11 to delete the radio terminal information stored in the pre-assigned voice channel. In addition, the memory unit 11 deletes the information of the pre-allocated wireless terminal stored in the corresponding voice channel in the wireless terminal information memory for each voice channel and transmits a deletion completion message to the controller 9. Then, the control unit 9 transmits the channel change completion message to the wireless subscriber call processing unit 10 in accordance with the deletion completion message of the memory unit 11. Accordingly, the radio subscriber call processing unit 10 allocates a channel to the new wireless interface card 7N and then transmits a voice channel change completion message to the control unit 9. Then, the control unit 9 transmits the voice channel change completion message to the newly allocated wireless interface card 7N and executes call processing through the newly set voice channel.

As described above, according to the present invention, a channel assignment of a wireless terminal in a keyphone system having a plurality of wireless interface cards is processed by a wireless interface card using information of the wireless terminal, so that the channel is allocated to a voice channel by being processed. Therefore, it has the advantage of significantly improving the call processing characteristics of the key phone system accordingly.

In addition, according to the present invention, even when roaming, the channel assignment is processed from the roaming wireless interface card without being assigned a call by the wireless subscriber call processing means, so that no delay or call disconnection due to voice channel assignment does not occur. The operational reliability of the system is also significantly improved.

Claims (4)

When it is confirmed that the call originating request signal is input during the call processing request confirmation step of confirming the call message requested by the key phone system, the call processing request confirmation step of confirming that the request signal has been input, and the call processing request confirmation step. The call interface information sending step, which receives the call call, transmits the call processing information request message to the controller of the key phone to notify the call channel assignment designated by the wireless interface unit and receives the call call after the call sending information sending step. Call incoming processing step of executing a call calling function by allocating a voice channel according to the call processing information request message received from the corresponding wireless interface unit, and when it is confirmed that the incoming call request signal is input during the call processing request checking step, the current incoming call is received. An incoming call transmission step of transmitting the received home message to all wireless interface cards, and after the incoming call transmission step Receiving an incoming call after receiving the incoming message, the wireless interface unit sends the call processing information request message to the controller of the key phone to notify the assignment of the designated call channel and receives the incoming call after the receiving call information sending step. When it is confirmed that the voice channel change request signal is input during the call reception processing step of allocating a voice channel according to the call processing information request message received from the wireless interface unit and executing the call reception function, and the call processing request confirmation step. The voice channel change information sending step of transmitting the voice channel change information request message to the controller of the key phone to notify the assignment of the call channel designated by the wireless interface unit receiving the voice channel change, and the voice after the voice channel change information sending step. Voice channel change information received from the corresponding wireless interface unit receiving the channel change information Assigning a voice channel in accordance with the old message by the wireless channel assignment method of the phone system, characterized in that consisting of changing voice channel data processing step of executing the speech channel switching function. 2. The method of claim 1, wherein the call origination request message includes voice channel information and wireless terminal information. 2. The method of claim 1, wherein the call processing information request message includes voice channel information and wireless terminal information. The method of claim 1, wherein the voice channel change request message includes voice channel information and wireless terminal information.