KR0165509B1 - Communication channel control method in communication system of a housing complex - Google Patents

Abstract

The present invention relates to a communication channel management method in a multi-unit residential communication system for allocating a communication channel to perform communication between a plurality of terminals. When there is a data relay request from a terminal, is the relay request the first call? Determining the process; If it is not the first call, checking whether the already allocated channel is returned, and if so, initializing the allocated channel, otherwise performing general data relay; A channel assignment process of allocating a communication channel for a call in the first call; A timer calculation process of calculating a timer for channel management after allocating a communication channel; And a channel recovery process forcibly recovering the allocated communication channel if there is no response from the terminal to which the channel is allocated for a predetermined time in the timer calculation process. According to the present invention, there is an advantage in that the communication channel can be appropriately recovered by unnecessarily allocated communication channel, and the communication channel can be allocated to the next call, and the abnormal operation of the terminal can be prevented.

Description

Communication Channel Management Method of Multi-family Communication System

1 is a diagram showing the configuration of a multi-family communication system using a common single coaxial network.

2 is a flowchart illustrating a channel allocation method in a collective communication system according to the prior art.

3 is a block diagram of a collective housing communication system to which the present invention is applied.

4 is a view for explaining a method of forming a call path in a multi-family communication system using a coaxial line.

5 is a flowchart illustrating a channel allocation method in a multi-family telecommunication system according to the present invention.

6 is a flowchart of a process performed by a realtimer in a main body.

7 is a flowchart illustrating a process of performing channel management in a multi-family communication system according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system installed in an apartment complex to perform communication between generations, and more particularly, to a method of managing and assigning a communication channel in a collective communication system using a single coaxial line.

Multi-family home automation system using coaxial line uses dozens or hundreds to make a constant frequency width for communication between household and household, household and guard room, guard room and guard room. The number of call channels is limited due to the problem of improving the quality of the call and avoiding the frequency bands already specified or regulated.

In addition, the formation of a communication path using a coaxial line has to go through a complicated communication procedure between a generation unit or guard room, which can be called a terminal, and a main body that manages communication of the entire system.

1 is a diagram showing the configuration of a multi-family communication system using a general single coaxial network.

The collective communication system shown in FIG. 1 has a single coaxial line 20, 45, household interphones 5 installed in each household connected to the single coaxial line 20, and a household or manager at each entrance. Public entrance interphones (5) installed in the common entrance used by a number of households for common use and call, copper controllers (30A, 30B) for controlling intergenerational calls in the town, and the manager who manages one or more towns Sub-interphones 40A and 40B installed in the resident guard house, the central controller 50, the frequency converter 55 and the computer 60, and the setting device 50A that control and relay the call between the inside and the outside. Consists of.

The common entrance interphones 5 installed in the common entrance and the generation interphones 5 installed in each of the plurality of households using the common entrance are connected to one through a single coaxial line 20. In addition, the copper controllers 30A and 30B, the sub-interphones 40A and 40B, and the central controller 50 are commonly connected through the housework coaxial line 45.

At this time, multi-frequency division communication is performed for a call and information exchange using a single coaxial line. For this communication, a communication channel is secured through frequency allocation. A given frequency band is divided into transmission and reception frequency bands, and at this time, each band is divided to have a predetermined bandwidth (BAND WIDTH) and each bandwidth is allocated to one communication channel.

To secure the communication channel, 256 communication channels are secured when the transmission frequency band is 30-35.12MHZ, the reception frequency band is 112.705-117.825MHZ and the bandwidth is 20KHZ. Therefore, the number of communication channels can be changed according to the determination of the frequency band and the bandwidth. Thus secured 256 communication channels are secured two control channels for transmitting and receiving control data between each device, and 127 communication channels for transmission and reception. Therefore, 127 currency paths can be formed.

The central controller 50 polls the copper controllers 30A and 30B and the sub-intercoms 40A and 40B in order to manage 254 communication channels according to the frequency assignment described above. That is, the information about the copper is provided to the corresponding controller using the transmission / reception control channel, and the computer 60 or the setting device 50A is used to set the information. In addition, the central controller 50 allocates a call channel necessary for inter-generational call relaying by the same controllers 30A and 30B. That is, a predetermined number of communication channels are allocated to the copper controllers 30A and 30B. In addition, if there is an additional call channel allocation request from the controller, an unused communication channel among the communication channels not allocated to the controller is additionally allocated.

The central controller 50 and the controllers 30A and 30B use transmission and reception control channels for transmission and reception of control data. The controllers 30A and 30B are CSMA / CD in the common entrance interphones 5 and generation interphones 5 and the baseband (BADE BAND) AMI waveform to manage the call channels allocated from the central controller 50. Control communication is performed using the Carrier Sense Multiple Access with Collision Detection method. When there is an intra-call request from the controllers 30A and 30B, the intra-call call is performed using the call channels initially allocated from the central controller 50. In this case, the central controller 50 allocates an unused call channel among the unassigned call channels to the corresponding controller, and the controller reassigns it to the corresponding interphones. Accordingly, the call calling and called interphones can be allocated two call channels for transmission and reception.

The frequency converter 55 is connected to the single coaxial line 55 and converts the 30MHZ transmission frequency band inputted into the l17MHZ reception frequency band and outputs it.

Generation interphones (5) detects various types of information (security, gas leakage, electrical leakage, etc.) of each generation through a sensor and converts it into the corresponding control data and transmits it to the corresponding controller through the control channel and again the central controller ( 50) to pass. At this time, the central controller 50 transmits to the guard intercom in the guard house that manages each household, and informs the manager who resides in the guard station.

Accordingly, the guard interphones 40A and 40B can make a call with the household within their management or the consent household or other guard that they do not manage through the call relay of the central controller 50, It is possible to comprehensively manage various types of information of each household in the city to be managed and take measures according to the respective information.

The computer 60 transmits and receives information data with the central controller 50, stores and performs information processing for comprehensively managing each piece of information of each generation, and exchanges information through a communication network. In particular, when household safety measures (gas leak, fire, crime prevention, etc.) are needed, the safety information of households can be provided by selectively outputting the pre-stored voice signal through the public telephone network according to the information content of households. .

2 is a flowchart illustrating a channel allocation method in a multi-family telecommunication system according to the related art. The channel allocation method by the central controller of FIG. 1 will be described with reference to FIGS. 1 and 2 as follows.

The central controller 50 starts communication with the copper controllers 30A and 30B and the sub-intercoms 40A and 40B connected to the single coaxial line 45 when the power is turned on.

At this time, the central controller 50 determines whether there is an allocation request for the intra-channel communication channel from the controllers 30A and 30B (102), and allocates a predetermined number of intra-channel communication channels to the same controller if the allocation request is made (104). ). That is, the central controller 50 allocates a predetermined number of channels for intra-communication communication to each dynamic controller.

Subsequently, it is determined from the controllers 30A and 30B and the sub-intercoms 40A and 40B to see if there is an outbound call relay request (106), and if there is an outbound call relay request, unassigned channels are searched (108). In this case, if there are no unassigned channels, that is, all of them are in use (110), a channel no message is transmitted (112). Otherwise, the external communication channel is transferred to the corresponding control devices (30A, 30B) or sub-interphones (40A). 40B).

In step 106, if it is not a call request from the outside, it is determined from the controllers 30A and 30B that there is a lack of channels for intra-communication and thus there is an additional channel allocation request (116). If there is an additional channel allocation request, it searches for an unallocated channel (118), if it is all in use (120), transmits a no channel message (122) and otherwise allocates an additional intra-channel for communication (124).

When the predetermined time has elapsed (126), the central controller 50 searches for the use channel allocated in the steps 114 and 124 (128), and if there is a use channel (130), inquires about the channel use state of the device. (132).

It is determined whether there is a response to the channel usage state from the device (134). If a response is received that the channel is not in use (136), the channel is recovered (138). At this time, if there is no response to the channel use status query for a predetermined number of times from the device (140), the communication line of the device is considered to be disconnected or the power is cut off, and the channel is forcibly recovered (142).

Subsequently, when a channel use end message is received (144), the channel is recovered (146).

As described above, in general, the communication procedure in a cooperative housing communication system using a coaxial line is as follows.

Calling step for calling another terminal (telephone) from one terminal (telephone), incoming step for notifying that the call is possible from the called terminal (telephone) (ringback ringtone for ringing terminal, ringing ring for notifying that call is received) , By picking up the handset of the handset terminal, it is possible to make a call and then end the call after the call.

If communication to the called party is made in the above communication step and data corresponding to the end of the call is lost in the middle, the receiver terminal continues to ring continuously unless the user hangs up directly. This situation occurs when the terminal breaks down during communication, the power is turned off during communication, or the communication line is disconnected. If the phenomenon occurs while the user is away, there is no countermeasure.

For example, assuming that a call is made from 103 to 101 to 206 to 1309 using a cooperative communication system using coaxial lines, the following description will be made.

If the user of 206-1309 is away from home for the first time and calls 206-1309 from 103-101, the system main body allocates one call channel that is not in use and transmits the call signal to 206-1309. Building 206, 1309, receives a call through a communication channel and transmits an incoming signal indicating that a call is possible. The system main body transmits the incoming signal to 103-101, so that the 103-101 terminal that receives the incoming signal rings the ringback tone, and the 206--1309 terminal announces the call until the user picks up the ring. It will ring.

At this time, the power of terminal 103 and 101 may be turned off and on again, or the terminal may be initialized or there may be a problem in the communication line. Therefore, communication between terminal 206 and 1309 and terminal 103 and 101 may become impossible. Then, if the user of the 101-101 has already terminated the call or if it is not possible to send the call termination signal due to the initialization of the terminal, the terminal of the 206-1309 without the user is assigned a call channel. The ring will continue to ring until it is released and released. In this state, all calls from other places are recognized as busy and unanswered.

A first object of the present invention is to provide a method for forming a currency path in a collective communication system for forming a communication path between a sending and receiving terminal through a main body in a collective communication system.

A second object of the present invention is to provide a communication channel management method in a collective communication system that can cope with an abnormal communication situation by checking the state of a call channel allocated by a call in the collective communication system.

A third object of the present invention is to provide a communication channel allocation method in a collective communication system capable of allocating a communication channel to minimize communication interference with a communication channel that is already allocated to a call from a terminal in the collective communication system. It is.

A fourth object of the present invention is to provide a method for checking a communication channel in a collective communication system for checking the status of a currently allocated communication channel in order to effectively manage the communication channel in the collective communication system.

The method of forming a call in a multi-unit residential communication system according to the present invention for achieving the first object,

In a collective housing communication system comprising a plurality of terminals and a main body for relaying communication between the terminals, a method for forming a call path in a collective communication system for forming a communication path between a sending and receiving terminal through the main body. To

A first step of transmitting a call signal for a handset terminal from a call terminal to a main body; The main body receiving the call signal searches for a callable channel, and if there is a call channel, adds the assigned call channel to the called handset terminal and transmits to the called terminal if all channels are in use. In the second process, the handset terminal receiving the call signal together with the call channel transmits the incoming signal to the main body together with the allocated channel when the caller is available for the call, and the main process transmits the incoming signal to the call terminal. ; A fourth step of sending a call start data indicating that a call is possible to the main body by lifting a handset of the handset terminal, and receiving a call start data from the main body to open a call channel to enable a call; And a fifth process of receiving a call termination signal from the called terminal or calling terminal after the call is opened to open a communication channel.

Communication channel management method in a multi-family residential communication system according to the present invention for achieving the second object,

In the communication channel management method in a collective communication system for allocating a communication channel to perform communication between a plurality of terminals,

Determining whether the relay request is the first call when there is a data relay request from a terminal; If the relay request is not the first call, checking whether to return the already used channel, and if so, initializing the allocated channel, otherwise performing general data relay; A channel assignment process for allocating a communication channel for the call when the relay request is the first call; A timer calculation step of calculating a timer for channel management to manage the allocated channel after the allocation of the communication channel is completed; And a channel recovery process forcibly recovering the allocated communication channel if there is no response from the channel assigned terminal for a predetermined time in the timer calculation process.

Communication channel allocation method in a multi-family residential communication system according to the present invention for achieving the third object,

A method for allocating a communication channel to another terminal for a data relay request from one terminal in order to perform communication between a plurality of terminals in a collective communication system,

In the process of calling for data relay request from one terminal to another terminal, it is determined whether a communication channel can be allocated at least three channels apart from an already allocated call channel, and if so, one of the channels is selected. Assigning to a communication channel; If the communication channel cannot be allocated at least three channels apart from the already allocated call channel, it is determined whether the communication channel can be allocated at intervals between the already allocated call channel and the two channels, and if any, Selecting one channel and assigning it to a communication channel; If the communication channel cannot be allocated at intervals of more than two channels with the already allocated call channel, searching for the oldest communication channel among the already allocated channel and selecting the channel next to the found channel and assigning it to the communication channel. ; And performing data relay between the terminals through the allocated communication channel.

The communication channel check method in the multi-family residential communication system according to the present invention for achieving the fourth object,

A method for checking a state of use of a communication channel allocated for communication between a plurality of terminals in a multi-family communication system,

A channel assignment process for allocating a communication channel to a call of a transmitting terminal, and a step of checking an allocation state of all communication channels at a predetermined time interval through a channel management timer; Send the data for forced channel recovery to the called terminal that called for the communication channel exceeding the predetermined time value among the assigned communication channels, and inquire about channel usage with the calling terminal that first called for the communication channel that did not. Sending process; And when the response from the talk terminal for the channel usage query is 'in use', initializes the time value of the assigned channel, and if the response from the talk terminal for the channel usage query is 'not in use'. And transmitting data for channel recovery to the called terminal.

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

3 is a diagram illustrating a configuration of a collective communication system to which the present invention is applied.

A copper controller (1-M) that controls each generation of households (generation 1-480) of tens or hundreds of households; It is a management unit (a complex manager) that manages communication of the actual unit and is in charge of exchanging data, and a computer (or setting device) that can see all the situations occurring in the complex and set up the structure of each building in the complex. Each generation is connected to a trunk line, and cogeneration halls are connected to other generations through coaxial lines, and each generation is connected to a door phone corresponding to each entrance.

The guard room communicates with the controller and the management room by polling, and the carrier sense with multiple access (CSMA) communication with each household under the control of the controller and the controller. Guard aircraft 1..N is able to call all households, and the call from each door is called the household connected to the door.

4 is a view for explaining a method of forming a call path in a multi-family communication system using a coaxial line. In the drawing, the terminals 411 and 413 may be a household or a common entrance, guard room, which are managed by the same controller, and the main body 412 is a management unit that manages the same controller, the same controller, and the guard room that manages the household and the common entrance. Central controller).

When the call terminal 411 sends a call signal (①), the main body 412 searches for a callable channel, and if there is a call channel, adds and assigns the allocated channel to the other terminal 413 (②), and all channels are used. If there is no channel to be assigned to notify the terminal 411 (② '). The handset terminal 413 receiving the call signal together with the call channel transmits the incoming signal to the main body 412 together with the assigned channel if it is available to call (③), and the main body 412 calls the signal again for the first time. It transmits to the call terminal 411 (④). When the communication proceeds up to this point, the first called terminal 411 hears a ringback tone from the handset and the called terminal 413 rings the ring.

At this time, the call start data indicating that the call is possible by taking the handset of the called terminal 413 (hook off) is transmitted to the main body 412 (⑤), and the call terminal 411 receiving the call start data from the main body 412. (6) opens a call channel to make a call. When the call is over, the call termination signal is received from the called terminal 413 or the calling terminal 411 (⑦, ⑧) to open the call channel and the open call channel can be assigned to another call.

5 is a flowchart illustrating a channel allocation method in a multi-family telecommunication system according to the present invention.

If there is a data relay request from a terminal (501), it is determined whether the relay request is the first call (502). If it is not the first call, it checks whether or not to return the already allocated and used communication channel (511), and if so, initializes the allocated communication channel so that it can be allocated to the next call (512); General data relay is performed through the communication channel (513).

If the relay request for the data is the first call, the communication channel for the call is allocated as follows (503). In operation 504, it is determined whether the call channel to be allocated can be separated from at least three channels with the already allocated call channels.

The separation of at least three channels is intended to eliminate the possibility of confusion that can occur when each terminal actually talks. If the channel can be allocated at intervals of three or more channels, the channel is allocated to the call channel (507), and the process proceeds to the channel management time calculation process for channel management (509). If the interval of at least three channels cannot be given, it is checked whether the interval of two or more channels is possible (505). If the channel can be allocated at intervals of two or more channels, the channel is allocated to the call channel (507), and the process proceeds to the channel management time calculation process for channel management (508). If an interval of more than two channels is impossible, allocation should be made in one channel interval. In this case, the oldest channel allocated to the channel is searched (506) and allocated to the channel next to the channel (507).

After the allocation of the communication channel, the channel management timer is calculated to manage the allocated channel (508). Communication channel management should be the same in case of allocating one channel or almost all channels. Therefore, the channel management timer sets the value obtained by dividing the time interval to be managed by the assigned channel as a timer, and the set timer is stored for backup. In other words, each channel is checked one by one every time and the time taken to check all allocated channels is equal.

If there is no assigned channel, the assigned channel is set to 1, the allocated call channel is added to the call data, and the process proceeds to the data relay (509), and the general program is executed (510).

6 is a flowchart of a process performed by the realtimer in the main body and calculates various time-related matters used in the main body.

Each time the procedure of the flowchart is performed, the channel management timer is decreased or increased (601) to check whether the desired time is reached (602). If the desired time is not reached, a general time related program is executed (605). If the desired time is reached, the channel management timer is reset (603) to indicate that the time is reached (604), and a general time related program is executed.

7 shows a flowchart of a process of performing channel management as part of the main program of the main body. In FIG. 6, when the channel management timer has reached a certain time, this part is executed.

If the channel management timer indicates that the predetermined time has passed (701), the time value of a channel that has not been previously increased among the allocated channels is increased (702). If the increased value exceeds a certain value (703), it means that there is no response to the channel management data continuously. Therefore, the communication channel is forcibly recovered by sending data for forced channel recovery to the called terminal. 704. In this case, if the terminal subjected to the forced channel number is ringing, the ring stops, and in other cases, the terminal hangs up unconditionally.

If a certain value is not passed, an inquiry about channel use is sent to the first calling terminal. If the response to the channel usage inquiry is 'in use', the time value of the assigned channel is initialized. If the response to the channel usage inquiry is to 'not in use', the communication between the two terminals is regarded as wrong. The channel recovery data is sent to the called device to recover the communication channel.

As described above, according to the method for allocating a communication channel in a multi-unit residential communication system according to the present invention, a call channel allocated by a call is checked at a predetermined time in a terminal that has made a call and is not in use or during a predetermined number of times. By notifying the called terminal associated with the call channel about the case where it is impossible, it is possible to appropriately retrieve the unnecessary allocated communication channel and to allocate the communication channel to the next call. There is an advantage that can prevent abnormal operation.

Claims (9)

In a collective housing communication system comprising a plurality of terminals and a main body for relaying communication between the terminals, a method for forming a call path in a collective communication system for forming a communication path between a sending and receiving terminal through the main body. A first step of transmitting a call signal for a handset terminal from the call terminal to the main body; The main body receiving the call signal searches for a callable channel, and if there is a call channel, adds the assigned call channel to the called handset terminal and transmits to the called terminal if all channels are in use. Is a second process; A handset terminal receiving a call signal together with a call channel, when the caller is available to speak, transmits an incoming signal to the main body together with an assigned channel, and the main body transmits the incoming signal to the calling terminal; A fourth step of sending a call start data indicating that a call is possible to the main body by lifting a handset of the handset terminal, and receiving a call start data from the main body to open a call channel to enable a call; And a fifth process of receiving a call end signal from a called terminal or calling terminal when the call is completed and opening a call channel. A communication channel management method in a collective communication system for allocating a communication channel to perform communication between a plurality of terminals, the method comprising: determining whether the relay request is the first call when there is a data relay request from a terminal; ; If the relay request is not the first call, checking whether to return the already used channel, and if so, initializing the allocated channel, otherwise performing general data relay; A channel assignment process for allocating a communication channel for the call when the relay request is the first call; A timer calculation step of calculating a timer for channel management to manage the allocated channel after the allocation of the communication channel is completed; And a channel recovery process forcibly recovering the allocated communication channel if there is no response from the channel-assigned terminal for a predetermined time in the timer calculation process. The method of claim 2, wherein the channel assignment process determines whether a communication channel can be allocated at least three channels apart from an already allocated call channel, and if so, selects one of the channels and assigns it to the communication channel. Communication channel management method in a collective housing communication system characterized in that. The method of claim 2, wherein the channel assignment process determines whether a communication channel can be allocated at least two channels apart from an already allocated call channel, and if so, selects one of the channels and assigns it to the communication channel. Communication channel management method in a collective housing communication system characterized in that. The communication system of claim 2, wherein the channel allocation process searches for the oldest communication channel among the channel assignment communication channels, selects a channel next to the searched channel, and assigns the channel to the communication channel. How to manage your channel. The method of claim 2, wherein the timer calculation process, the channel management timer sets a value obtained by dividing a predetermined time interval by the number of allocated communication channels as a timer value, and checks and allocates one assigned communication channel according to the time interval. Communication channel management method in a multi-family communication system characterized in that the time taken to check the communication channel is always constant. The communication channel management of claim 2, wherein the channel recovery process stops the ring if the terminal subjected to the forced channel recovery is ringing, otherwise disconnects the call unconditionally. Way. A method for allocating a communication channel from one terminal to another terminal for a data relay request from one terminal in order to perform communication between a plurality of terminals in a multi-family communication system, the data relay request from one terminal to another terminal Calling process; Determining whether a communication channel can be allocated at least three channels apart from an already allocated call channel, and if so, selecting one of the channels and assigning the communication channel to the communication channel; If the communication channel cannot be allocated at least three channels apart from the already allocated call channel, it is determined whether the communication channel can be allocated at intervals between the already allocated call channel and the two channels, and if any, Selecting one channel and assigning it to a communication channel; If the communication channel cannot be allocated at intervals of more than two channels with the already allocated call channel, searching for the oldest communication channel among the already allocated channel and selecting the channel next to the found channel and assigning it to the communication channel. ; And performing data relay between the terminals through the allocated communication channel. Claims [1] A method for checking a state of use of a communication channel allocated for communication between a plurality of terminals in a collective communication system, the method comprising: a channel assignment process of allocating a communication channel to a call of a transmitting terminal; Checking an allocation state of all communication channels at a predetermined time interval through a channel management timer; Send the data for forced channel recovery to the called terminal that called for the communication channel exceeding the predetermined time value among the assigned communication channels, and inquire about channel usage with the calling terminal that first called for the communication channel that did not. Sending process; And when the response from the talk terminal for the channel usage query is 'in use', initializes the time value of the assigned channel, and if the response from the talk terminal for the channel usage query is 'not in use'. A method for checking a communication channel in a collective communication system, comprising transmitting data for channel recovery to a called terminal.