KR20020033214A - A method of managing ch resource for wll - Google Patents

Abstract

PURPOSE: A method for managing channel resources in a WLL(Wireless Local Loop) system is provided to achieve smooth data communication by allocating all the channel resources of an unused and new time slot, in the case of transmitting a data signal using the channel resources of a sub time slot that transmits a compressed voice signal. CONSTITUTION: In case that an RIU(Radio Interface Unit) in the coverage of an RP(Radio Port) requests call setup(S10), a main control part in an RPC(Radio Port Controller) detects all unused time slots(S20). If a call setup request signal from the RIU is supplied to the first interface part and the output RX trunk of a transcoder through the RP, the main control part outputs a relevant control signal to an output control part so that an output RX selection part can control the output RX trunk. The output RX trunk outputs the signal outputted from the RIU to an output SHW(Sub High Way). A modem tone detection part and a fax tone detection part detect the signal outputted to the output SHW and judges whether the detected signal is a data signal or a voice signal(S30). In case that it is judged that the call setup request signal is a data signal, the main control part obtains information for the first unused 8-bit 64Kbps time slot and outputs it to a call processing control part. Accordingly, the RIU carries out data communication through the allocated time slot(S40).

Description

Channel Resource Management Method of Wireless Subscriber Network {A METHOD OF MANAGING CH RESOURCE FOR WLL}

The present invention relates to a channel resource management method used between a base station controller and a base station of a wireless subscriber network (WLL) system. In particular, a channel resource capable of easily and efficiently changing a bandwidth to suit a state of data to be transmitted by a subscriber. It is about management method.

A wireless local loop (WLL) is a system that uses a fixed terminal that does not move a terminal. The terminal is a subscriber station or a radio interface unit (RIU), and a base station is a radio base station (RP). : Radio Port, and the base station controller or base station controller (RPC: Radio Port Controller) is the centralized control and management of the plurality of radio base stations (RP).

The wireless subscriber network (WLL) allocates a bandwidth of 32 Kbps as a channel when communication data transmitted from a subscriber station device (RIU) is a voice signal, and uses a bandwidth of 64 Kbps as a channel when data using a fax or a modem. If the subscriber requests high-speed data transmission service, the bandwidth of 128 Kbps is allocated to the corresponding channel, and the bandwidth should be appropriately changed according to the data transmission state of each subscriber line.

Hereinafter, a resource management method of a wireless subscriber network according to the prior art will be described with reference to the accompanying drawings.

1 is a configuration diagram of a general wireless subscriber network system, FIG. 2 is a detailed functional block diagram of a base station controller for managing resources of a wireless subscriber network, and FIG. Detailed function block diagram of the coder, FIG. 4 is a conceptual diagram of resource allocation according to the token resource allocation method of the prior art, FIG. 5 is a conceptual diagram of resource allocation by the resource search allocation method of the prior art, and FIG. 6 is the same time slot of the conventional technique. FIG. 7 is a conceptual diagram in which two sub-time slots using the same time slot of the prior art are used.

Referring to FIG. 1, the general wireless subscriber network (WLL) includes a plurality of public communication networks (PSTNs) 10 capable of communicating with an unspecified number.

A base station controller (RPC) 20 connected to the public telecommunication networks 10 and 15, for controlling and monitoring an operation state of a wireless subscriber network system and controlling allocation of channel resources;

A radio base station (RP) 30 having a predetermined service area 35 capable of allocating radio channel resources under the control of the base station controller 20 and communicating with the allocated radio channel resources;

A plurality of subscriber station devices (RIUs) or terminals 40 communicating through channel resources allocated in the service area 35 formed by the radio base station 30;

It consists of a subscriber management device (RPOM) 50 that centrally manages the operation and management of the entire wireless subscriber network and the status of failure.

Referring to FIG. 2, the general base station controller 20 includes a main control unit (CMCU) 22 that controls and monitors the entire wireless subscriber network and connects with the subscriber management apparatus 50 through the Ethernet network.

A call processing controller (CCPU) 23 for processing a call of a subscriber using a wireless subscriber network under the control of the main controller 22;

A switch unit (TSIU) 24 for connecting a call of subscribers to a corresponding path under the control of the call processing controller 23;

Check whether the communication signal state of the subscribers subscribed to the wireless subscriber network is voice communication, data communication using a fax or modem, or high speed communication, and occupy a channel having a corresponding bandwidth under the control of the main controller 22. A transcoder (DSCU) to control,

A first connection unit 26 for connecting the plurality of radio base stations 30 with the E1 line by the control of the main control unit 22;

By the control of the said main control part 22, it consists of the 2nd connection part 27 which connects with the public communication network 10 by E1 line.

Referring to FIG. 3, the transcoder (DSCU) 25 constituting the base station controller 20, the output TX for transmitting the corresponding data to the plurality of radio base stations 30 through the first connection portion (26) Trunk 62,

An output RX trunk 64 for receiving corresponding data from a plurality of radio base stations 30 via the first connection 26;

An output TX selector 63 for selecting and controlling the output TX trunk 62;

An output RX selector 65 for selecting and controlling the output RX trunk 64;

An output controller 66 for monitoring and controlling the functions of the output TX selector 63 and the output RX selector 65;

A modem tone detection unit 67 for confirming by detecting a modem tone signal whether the data signal using the wireless subscriber network is a signal transmitted through a modem and notifying the main controller 22,

A paxton detector 68 for checking whether the data signal using the wireless subscriber network is a signal transmitted through a fax (FAX) by detecting the paxton signal, and notifying the main controller 22,

An input TX trunk 72 for transmitting the corresponding data to the public telephone network 10 through the second connection unit 27;

An input RX trunk 74 for receiving the corresponding data from the public telephone network 10 through the second connection unit 27;

An input TX selector 73 for selecting and controlling the input TX trunk 72;

An input RX selector 75 for selecting and controlling the input RX trunk 74;

An input controller 76 for monitoring and controlling the functions of the input TX selector 73 and the input RX selector 75;

A compression ratio controller 77 for controlling a compression ratio of a voice communication signal using a wireless subscriber network under the control of the main controller 22;

Under the control of the compression rate controller 77, the ADPCM unit 78 for compressing the voice signal using the wireless subscriber network to use a bandwidth of 32 Kbps, and

Under the control of the compression rate control unit 77, the PCM unit 79 processes the voice signal using the wireless subscriber network to use a bandwidth of 64 Kbps.

Hereinafter, a method of managing a channel resource of a wireless subscriber network according to the prior art by using the wireless subscriber network having the general configuration as described above will be described in detail with reference to the accompanying drawings.

The base station controller (RPC) 20 of the wireless subscriber network is connected to a plurality of radio base stations (RP) 30 connected to the E1 line through the first connecting portion 26, and through the second connecting portion 27, E1. It is connected to a public communication network (PSTN) 10 connected to the track, and the main control unit (CMCU) 22 is connected to a Radio Port Operation and Maintenance (RPOM) 50 through an Ethernet line. ,

When a signal to communicate from a terminal (RIU: Radio Interface Unit) 40 located in the service area 35 of the specific radio base station (RP) 30 is input through the first connection unit 26, the main control unit ( 22) and at the same time is applied to a digital signal compression unit (DSCU) (25).

The signal applied to the output RX trunk 64 of the transcoder 25 is output SHW by the output control unit 66 controlling the output RX selector 65 according to the control signal of the main controller 22. It is applied to (Sub High Way).

The modem tone detector 67 and the facsimile detector 68 each search for a signal applied to the output SHW to check whether a modem tone or a facsiton is detected, and if detected, notifies the main controller 22 to send a fax or modem. Since it is a data signal that uses the transcoder 25, the radio bandwidth is converted from 32 Kbps to 64 Kbps to be transmitted.

The main controller 22 outputs a control signal to the compression ratio controller 77 when the applied signal is determined to be a voice signal, thereby processing the voice signal using an ADPCM (Adaptive Digital Pulse Code Modulation) and a 32 Kbps bandwidth. In the case of transmitting by using the channel of the signal, the signal is processed through the ADPCM unit 78, and the PCM unit (79) when the voice signal is processed using the channel of Pulse Code Modulation (PCM) and 64 Kbps bandwidth. Signal to be processed.

The voice signal compressed by the compression rate controller 77 is applied to the input SHW and input to the input TX trunk 72.

The main controller 22 outputs a control signal to the input controller 76, and the input controller 76 receiving the control signal outputs the corresponding control signal to the input TX selector 73, thereby providing the input TX. The trunk 72 outputs a signal applied from the input SHW.

The main controller 22 outputs a control signal to the call processing controller 23 to perform a corresponding call processing when the output signal requires call processing by a wireless subscriber network. The path through which the signal is transmitted is connected by the switch unit 24.

When the signal connected to the path by the switch unit 24 is transmitted to other subscribers joining the wireless subscriber network, the radio base station 30 via the transcoder 25 and via the first connection unit 26. ) Is transmitted to the public communication network 10 through the second connection unit 27 when transmitted to the subscribers subscribed to the public communication network 10.

In the wireless subscriber network, E1 channel is divided into 32 timeslots to transmit communication signals. Each timeslot has 8 bits of 64 Kbps bandwidth, and each timeslot has 4 bits of sub time having 32 Kbps bandwidth. It consists of a slot.

The wireless subscriber network having the above-described configuration compresses 32 Kbps of sub-time slots of specific timeslots if the applied signal is a voice signal, in order to increase channel utilization, unless the subscriber requests otherwise. To send. In the case of a data signal, one time slot is allocated and transmitted. When the subscriber requests high-speed data transmission, 128 Kbps of two timeslots are allocated.

Referring to FIG. 4, a time slot by the main controller 22, that is, a token method of allocating channel resources, will be described in detail. The initial state of 'A' is the time of the wireless subscriber network. When the slot is not occupied and the voice signal 'I' is applied and compressed to 32 Kbps by the ADPCM unit 78, and the sub-time slot of the first time slot is allocated by the main controller 22. Shown.

When a data signal occupying a bandwidth of 64 Kbps in the 'I' state is applied, the main control unit 22 is not used and is empty, the second time of the next sequence, as shown in 'C'. Allocates channel resources that are slots.

In the state where the channel resource is allocated as shown in the above, when a data signal occupying a bandwidth of 128 Kbps is applied by the subscriber, the main control unit 22 is not used, as shown in 'D'. Allocates channel resources that are empty and are the third and fourth timeslots of the next order.

At this time, when a voice signal occupying 32 Kbps bandwidth is applied from the subscriber, the main control unit 22 is not used and is empty, as shown in 'e'. Allocates timeslots as channel resources.

The channel resource allocation method or the management method according to the conventional token method as described above, when a signal for requesting the allocation of a new channel is applied, increases the time slot number by one and does not use the new one. In this method, although channel resources of unused sub-time slots of timeslots using only 4-bit sub-timeslots remain among each time slot, channel resources to provide services are allocated to the new signal. There was a problem that could not be assigned.

Some of the problems of the channel resource allocation method according to the conventional token method as described above are described in detail below as the resource search allocation method shown in FIG.

The states of 'bar', 'sa', 'a', and 'za' of FIG. 5 are the same as those of the token method shown in FIG.

When the time slot is allocated as in the above ruler, when 32 Kbps bandwidth allocation is required by a new voice signal, an unused channel resource which can allocate 32 Kbps bandwidth by searching from the first time slot Check for this.

As a result of the above search, since the secondary timeslot by the first timeslot is not used, the new voice signal is allocated to the secondary timeslot of the first timeslot and transmitted.

In the channel allocation or management method using the resource search method as described above, a method of converting a bandwidth when a subscriber who is allocated a resource of 32 Kbps performs data communication will be described.

In the attached 'car' of FIG. 6, a user who transmits a 32 Kbps voice signal receives and uses a secondary time slot of a third time slot TS, and uses a fax or a modem. In the case where data communication is to be performed, the tone signal is detected by the modem tone detector 67 or the facsimile detector 68, and the main controller 22 is notified.

Since only one sub time slot is used among the two 4-bit sub timeslots, the third timeslot is the remaining 4 bits of the unused 4 bits. By additionally assigning secondary timeslots, channel resources with 8-bit 64 Kbps bandwidth of the same timeslot are allocated, allowing the subscriber to communicate data.

However, as an example, a user who transmits a voice signal using one sub-timeslot among two sub-timeslots of the fourth time slot, as shown in 'wave' of FIG. 7, may use a fax or modem. In the case of data communication, as shown below, the main controller 22 cannot allocate the remaining sub-time slots for data communication, and thus, channel resources of currently allocated 32 Kbps bandwidth are allocated. There is a problem that the data transmission rate is slowed down because data communication is performed by using the same.

According to the technique of the present invention, when data signals are transmitted using channel resources of a sub-time slot through which a compressed voice signal is transmitted, all data channels of a new timeslot that is not used are allocated, thereby enabling smooth data communication. The purpose of the present invention is to provide a channel resource management method in a wireless subscriber network, in which a previously used timeslot or a secondary timeslot is recovered and reused.

In order to achieve the above object, the present invention provides a channel resource management method of a wireless subscriber network; A call determination process of determining whether a signal for requesting call establishment for communication is applied from the terminal; A search process for searching for and managing all time slots and minor time slot resources that are not currently used by the main control unit of the wireless subscriber network when the call establishment process requires call setup; A voice signal determination process of determining whether the signal applied by the call determination process is a voice signal; A first data communication process of assigning and communicating a first time slot resource among time slot resources searched and managed by the search process when it is determined that the voice signal is not a voice signal in the voice signal determination process; An end determination step of determining whether the communication by the above step is terminated; When the communication is terminated in the above process, after the communication is completed by collecting and managing the corresponding time slot resources, characterized in that the end of the communication.

1 is a block diagram of a general wireless subscriber network system,

2 is a detailed functional block diagram of a base station controller for managing resources of a wireless subscriber network;

3 is a detailed block diagram of a transcoder of a base station controller;

4 is a conceptual diagram of resource allocation by the token resource allocation method of the prior art,

5 is a conceptual diagram of resource allocation by a conventional resource search allocation method,

6 is a conceptual diagram of a bandwidth conversion state by the same timeslot of the prior art;

7 is a conceptual diagram in which two sub-time slots by the same time slot of the prior art are used.

8 is a flowchart illustrating a method for managing channel resources in a wireless subscriber network according to the present invention.

9 is a conceptual diagram of timeslot resource allocation according to an embodiment of the present invention;

10 is a conceptual diagram of timeslot resource allocation according to another embodiment of the present invention.

** Explanation of symbols for the main parts of the drawing **

10: public communication network 20: base station controller

22: main controller 23: call processing controller

24: switch portion 25: transcoder

26, 27: connection part 30: radio base station

35: service area 40: terminal

50: subscriber management device 62: output TX trunk

63: output TX selector 64: output RX trunk

65: output RX selector 66: output control unit

67: modem tone detector 68: paxton detector

72: input TX trunk 73: input TX selector

74: input RX trunk 75: input RX selector

76: input control unit 77: compression ratio control unit

78: ADPCM unit 79: PCM unit

Hereinafter, a channel resource management method in a wireless subscriber network according to the present invention will be described with reference to the accompanying drawings.

8 is a flowchart illustrating a method for managing channel resources of a wireless subscriber network according to the present invention, and FIG. 9 is a conceptual diagram of timeslot resource allocation according to an embodiment of the present invention. 10 is a conceptual diagram of timeslot resource allocation according to another embodiment of the present invention.

Referring to FIG. 8, a channel resource management method in a wireless subscriber network according to the present invention is for communication from a radio interface unit (RIU) or a terminal 40 of a wireless subscriber network (WLL). A call determination process (S10) of determining by the main control unit (CMCU) 22 whether a signal for requesting call setting is applied;

In the call determination process (S10), the call setting is required, by the main controller 22 of the wireless subscriber network (WLL), the wireless base station (RP) 30 of the current wireless subscriber network (WLL) system Of the 32 time slots (TSs) of the E1 channel used, all 8-bit 64 Kbps bandwidth timeslots (TS) and 4-bit 32-Kbps bandwidth sub-timeslots, in which calls are established and not being used for communication, Sub TS) a search process (S20) for searching, recording and managing resources;

Voice signal determination process for determining whether the call setup request signal of the subscriber station 40 applied by the call determination process (S10) is a voice signal or a data signal by a fax (FAX) or a modem (Modem) ( S30),

In the voice signal determination process (S30), it is determined that the signal for requesting call setting by the subscriber station 40 is not a voice signal but a data signal by using a fax or a modem. In this case, among all the time slot (TS) resources searched, recorded and managed by the search process (S20), by designating and assigning a time slot (TS) resource of the first 8-bit 64 Kbps bandwidth, the corresponding terminal 40 A first data communication process (S40) for allowing data communication;

End determination process (S50) for determining whether the communication by the process is terminated,

When the communication is terminated in the termination determination process (S50), the corresponding time slot (TS) or sub time slot (Sub TS) resources are recovered and managed after the communication is completed, and then the corresponding communication by call setting is performed. Termination process (S60) to end,

When the communication signal set in the call signal is determined to be a voice signal in the voice signal determination process (S30), the voice signal is converted into a 32 Kbps bandwidth signal by the ADPCM unit 78 of the transcoder 25. Among all the time slot resources that are compressed and searched and managed by the search process (S20), a sub time slot (Sub TS) resource having a first 4-bit 32 Kbps bandwidth under the control of the call processing controller 23. And a voice communication process (S70) for communicating with the voice signal compressed with the 32 Kbps bandwidth,

During communication with the 32 Kbps compressed voice signal by the voice communication process (S70), the subscriber terminal 40 requires a facsimile (FAX) or modem (Modem) or 57.6 Kbps that requires an 8-bit 64 Kbps bandwidth. It is determined whether the tone signal for data communication using the Internet or the like, which requires a bandwidth or bandwidth of 115.2 Kbps, is detected by the modem tone detector 67 or the paxton detector 68. If the tone signal is not detected, the tone determination process (S80) proceeds to the end determination process (S50),

If the communication is not terminated in the termination determination process (S50), after maintaining the allocation setting of the corresponding time slot (TS) or sub time slot (Sub TS) resources for the current communication is in progress to continue the communication A maintenance process (S90) of feeding back to the end determination process (S50),

In the tone determination process (S80), using a fax, a modem, or the Internet, and when a tone signal for data communication is detected, a 4-bit 32 Kbps bandwidth of current communication A recovery process (S100) of recovering a sub-TSlot resource and recording and managing the resource together with the resource of the search process (S20);

Of the 8-bit and 4-bit time slot resources retrieved, recorded and managed by the search process (S20), the first 8-bit 64 Kbps time slot (TS) resources are allocated to perform the data communication, It consists of a second data communication process (S110) to proceed to the end determination process (S50).

Hereinafter, the channel resource management method of the wireless subscriber network (WLL) according to the present invention having the above configuration will be described in detail with reference to all the accompanying drawings.

Call setup is required in order to join the wireless subscriber network (WLL) and communicate from the subscriber station (RP) 40 in use in the service area 35 of the wireless base station (RP) 30. If it is determined that the call setup is not required (S10), it is repeatedly determined whether the call setup is continuously requested.

When the terminal 40 requests call setup, the main controller 22 of the base station controller (RPC) 20 stores 32 timeslots (TS) of the E1 channel used by the corresponding radio base station (RP) 30. By searching the operational status of the), all the 4 Kbits 32 Kbps sub-time slots and 8 Kbits 64 Kbps timeslots are detected and recorded and managed in the corresponding memory area (S20).

When the signal for requesting call setup from the corresponding terminal 40 is applied to the first connection unit 26 through the radio base station 30 and to the output RX trunk 64 of the transcoder 25, the main control unit 22 outputs the control signal to the output control unit 66, so that the output RX selector 65 controls the output RX trunk 64.

The output RX trunk 64 receiving the control signal from the output RX selector 65 outputs a signal applied from the corresponding terminal 40 to the output SHW.

The signal output to the output SHW is detected by the modem tone detector 67 and the paxton detector 68, respectively, and is a data signal through a modem, a fax, a fax, or the Internet. It is determined whether or not the (Voice) signal (S30).

When the call setup request signal applied from the corresponding terminal 40 is determined as a data signal by the modem tone detector 67 and the paxton detector 68 in the voice signal determination process (S30), the main control unit ( 22) retrieves the operation status information of the timeslot recorded and stored in the memory.

The corresponding terminal 40 is outputted by outputting the information on the timeslot TS of the first 8-bit 64 Kbps bandwidth that is not currently used by the search of the main controller 22 to the call processing controller 23. The time slot of the 64 Kbps bandwidth is set and assigned, and the data communication (S40).

The main controller 22 determines whether data communication by the corresponding terminal 40 continues (S50), and if it continues, by continuously allocating the allocated resource, the data communication in progress is maintained (S90). Then, it is fed back to the end determination process to determine whether to end again.

When the communication is terminated in the termination determination process (S50), the corresponding time slot (TS) or sub time slot (Sub TS) of which the communication is terminated or completed is recovered and the communication channel resource operation status according to the search process (S20) is obtained. Record and save, and terminate the communication of the terminal 40 under the control of the call processing controller 23.

The modem tone detector 67 and the paxton detector 68 detect a signal applied from the terminal in the voice determination process S30, and if the tone signal is not detected, the terminal 40 detects the signal. It is determined that the call setup request signal applied is a voice signal, and by using the ADPCM unit 78 under the control of the compression rate control unit 77, the voice signal is compressed into a signal having a bandwidth of 32 Kbps ( Compression) is then output via the input TX trunk 72.

The main control unit 22 retrieves the operation status information of the timeslots recorded and stored in the corresponding memory, and obtains information on the sub TSs of the first 4-bit 32 Kbps bandwidth that are not currently used. By outputting to the call processing control unit 23, the corresponding terminal 40 is assigned a time slot of 32 Kbps bandwidth, and performs voice communication (S70).

In the voice communication process (S70), it is determined whether a data signal is input from the subscriber station in which voice communication is in progress, by detecting a tone signal from the modem tone detector 67 and the facsimile detector 68. (S80).

If the tone signal is not detected from the modem tone detector 67 and the paxton detector 68 in the tone determination process S80, the process proceeds to the termination determination process S50 to determine whether or not to terminate the tone determination process. If not, the process proceeds to the maintenance process (S90) to maintain the current voice communication, and if it terminates, proceeds to the termination process (S60) to recover the corresponding sub time slot (Sub TS) and the corresponding terminal ( The voice communication of 40) is terminated.

In the tone determination process (S80), when a tone signal is detected from the modem tone detector 67 and the paxton detector 68, that is, a 4-bit sub time slot (Sub TS) of 32 Kbps is currently used. If the 8-bit 64 Kbps time slot (TS) is required in the state of doing so, the corresponding 4-bit 32 Kbps sub time slot (Sub TS) currently recovered and being used as a voice communication channel resource is recovered and corresponding to the process by the search process (S20). Recording and storing in the memory to be managed (S100).

At the same time, the main control unit 22, from the channel resource operation status information recorded and stored in the corresponding memory, is the information of the first time slot TS among the information of the time slot TS of the 8 bit 64 Kbps bandwidth which is not currently used. By extracting and applying to the call processing controller 23, the time slot (TS) for data communication for the terminal 40 is allocated and set, and the data communication proceeds (S110).

As described above, the second data communication process (S110) converts the channel of the 4-bit 32 Kbps bandwidth for voice communication into the 8-bit 64 Kbps bandwidth channel and proceeds with data communication, and proceeds to the end determination process (S50). If it is determined whether to end the communication, and continues the data communication, the process proceeds to the maintenance process (S90) so that the channel of the currently allocated 64 Kbps bandwidth is set to be allocated continuously so that the data communication is maintained, and then the termination Feedback to the judgment process (S50),

When the data communication of the terminal 40 is terminated as determined in the end determination process (S50), the channel of the 8-bit 64 Kbps bandwidth allocated for the data communication is recovered and the corresponding data is detected by the search process (S20). By recording and storing in the memory, the data can be reused and data communication by the terminal 40 is terminated.

By the process of the present invention as described above with reference to Figures 9 and 10 attached to the channel conversion concept by using a fax, a modem or the Internet from the terminal 40 using a 4-bit 32 Kbps voice channel do.

Referring to FIG. 9, as an example, when a FAX Tone signal for data communication by a subscriber station is detected in a secondary timeslot of a third timeslot having a 4-bit 32 Kbps bandwidth for voice communication (S80), The secondary timeslot of the third timeslot is recovered (S100), and the sixth timeslot located first among the 8-bit 64 Kbps unused timeslots is allocated for data communication (S110).

Accordingly, the third time slot TS including the 4-bit second sub time slot Sub TS, and the channel resources are recovered, has a voice communication of 8 bit 32 Kbps bandwidth and an 8 bit 64 Kbps bandwidth according to the next turn. It is allocated and used for data communication of the required terminal 40.

In addition, referring to FIG. 10 according to another example, a fax tone to perform data communication from a corresponding subscriber station allocated a left sub-slot of a fourth time slot (Sub TS) using a 4-bit 32 Kbps bandwidth for voice communication. When a FAX Tone signal is detected (S80), the left sub-time slot of the timeslot is recovered (S100), and a sixth timeslot is located first among the 8-bit 64 Kbps unused timeslots. To perform the data communication by assigning (S110).

Accordingly, the recovered fourth secondary timeslot, including the existing secondary subslot and third secondary timeslot, is allocated to the voice communication of the corresponding terminal 40 which requires a 4-bit 32 Kbps bandwidth in the next turn. It is used.

According to the configuration of the present invention as described above, in a wireless subscriber network, a terminal using a 4-bit voice channel can be easily changed to an 8-bit channel for data communication and can efficiently manage channel resources. It has an effect.

In addition, the terminal user can be immediately assigned a channel for data communication even while using the voice channel, thereby improving the reliability of the wireless subscriber network system.

Claims (4)

In the channel resource management method of a wireless subscriber network, A call determination process of determining whether a signal for requesting call setup for communication is applied from the terminal; A search process for searching for and managing all time slots and minor time slot resources that are not currently used by the main control unit of the wireless subscriber network when the call setup is required in the call determination process; A voice signal determination process of determining whether the signal applied by the call determination process is a voice signal; A first data communication process of allocating and communicating a first time slot resource among time slot resources searched and managed by the search process when it is determined that the voice signal is not a voice signal in the voice signal determination process; An end determination process of determining whether the communication by the above process is terminated; When the communication is terminated in the process, the channel resource management method of the wireless subscriber network, characterized in that consisting of the termination process of terminating the communication after recovering and managing the corresponding time slot resources completed communication. According to claim 1, If it is determined that the voice signal in the voice signal determination process, the voice communication process of allocating the first sub-timeslot resources of the time slot resources searched and managed by the search process to communicate as a compressed voice signal; During communication with the voice signal compressed by the voice communication process, it is determined whether the tone signal for data communication is detected from the subscriber, and if it is not detected, the tone judging process proceeds to the end judging process. Channel resource management method of a wireless subscriber network. According to claim 1, And if the communication is not terminated in the termination determination process, maintaining a corresponding time slot for the ongoing communication, and including a maintenance process for returning to the termination determination process. The method of claim 2, A recovery process of recovering and managing a secondary timeslot resource currently in communication when a tone signal for data communication is detected in the tone determination process; And a second data communication process for allocating and communicating the first time slot resource among the time slot resources searched and managed by the search process and proceeding to the termination decision process. How to manage.