KR100345683B1 - apparatus and method for matching radio port and radio port controller in coireless local loop system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a base station and a base station control period wireless optical matching device and method thereof in a wireless subscriber network system.

2. The technical problem to be solved by the invention

The present invention is to enable a wireless optical connection between the base station and the base station controller in the WLL system instead of the E1 matching device, and can sufficiently accommodate the subscriber capacity that increases rapidly with only one initial installation by simple operation and high speed (155M to 622Mbps). To provide a wireless optical matching device and a method for enabling transmission by means of.

3. Summary of Solution to Invention

The present invention relates to a base station and a base station control period matching device of a wireless subscriber network (WLL) system each having an E1 matching unit, wherein the E1 signal output from the E1 matching unit of the base station is converted into digital data and converted into digital data. Converts the optical signal received from the base station controller into digital data having an arbitrary speed, and converts the converted digital data into an E1 signal for matching with the E1 matching unit of the base station. First signal conversion means; A first optical signal for transmitting the optical signal converted by the first signal conversion means to the base station controller in a time division manner, and receiving and providing the optical signal transmitted from the base station controller in a time division manner to the first signal conversion means; Transmitting and receiving means; Converts the E1 signal output from the E1 matching unit of the base station controller into digital data and converts the converted digital data into an optical signal having an arbitrary speed, and converts the optical signal received from the base station into an digital data having an arbitrary speed Second signal converting means for converting the converted digital data into an E1 signal for matching with the E1 matching portion of the base station controller; And a second optical signal for transmitting the optical signal converted by the second signal conversion means to the base station in a time division manner, and receiving the optical signal transmitted from the base station controller in a time division manner and providing the optical signal to the second signal conversion means. Including transmitting and receiving means.

4. Important uses of the invention

The present invention is used in the wireless subscriber network (WLL) system.

Description

Wireless optical matching device and method for controlling base station and base station in wireless subscriber network system {apparatus and method for matching radio port and radio port controller in coireless local loop system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless local loop (WLL) system, and more particularly, to a wireless optical matching device and a method for enabling a wireless optical connection between a base station and a base station controller in place of an E1 matching device in a WLL system. .

In general, the WLL system has an advantage that it is much better than the propagation environment of the mobile communication network in terms of use as a communication medium through a wireless channel.

In addition, the line-of-sight environment is secured, so that the propagation path loss is about 20 dB / decade, so that it can serve a wider area with the same transmission power. In addition, point-to-point Due to the fixed communication method, fading due to multipath is much less than that of the point-to-mobile communication network.

Due to these advantages, the development and research of the WLL system is actively underway, and the accompanying FIG. 1 shows a schematic configuration of a general WLL system having the above advantages.

As shown in FIG. 1, network components of a WLL system include network subscriber stations 10 and 10 ′, subscriber access units 20 and 20 ′, base stations 30 and 30 ′, base station controller 40, WLL switching center (50), base station operating device (60), etc., additionally, data communication matching device (IWF: inter-working function) (70) for data service, home location register (HLR: Home Location Resister / Authentication) Center 80.

In addition, a billing center 100 connected to the network management sensor 90, the WLL switch 50, and the data communication matching device 70 connected to the base station operating device 60 and the WLL switch 50 is further provided.

Let us explain the interface method between network components in the WLL system configured as described above.

The subscriber access devices 20 and 20 'and the base stations 30 and 30' use a standard WLL radio access standard as a connection standard, and the channel bandwidth is 10 MHz. In addition, the connection standard between the base stations 30 and 30 'and the base station controller 40 selects and uses E1 or HDSL (High-data rate Digital Subscriber Line), and the signaling method uses Link Access Protocol D (LAPD).

The base station controller 40 and the WLL switch 50 use E1 as a connection standard, and use ITU-T.G965 as a signaling method.

In addition, the connection standard between the base station controller 40 and the base station operating device 60 uses Ethernet, and as a signaling method, Simple Network Management Protocol (SNMP), File Transfer Protocol (FTP), and Telecommunication Network (TELNET). Etc.

On the other hand, the base station controller 40 and the data communication matching device 70 uses E1 as the connection standard, and uses LAPD as the signaling method. In addition, the WLL switch 50 and the data communication matching device 70 use E1 as a connection standard, and R2 is used as a signaling method.

The connection standard between the WLL switch 50 and the home position register 80 uses E1, and IS-41C is used as the signaling method.

The operation of the WLL system connected through the connection standard and signaling method will be described in more detail.

First, the base station (30, 30 ') is a base station control module (RCP) that performs the overall management function for one base station, a modem module for performing CDMA (CDMA) channel-related signal processing function, high output / RF (Radio Frequency) module for performing a low noise amplification and transmission and reception frequency conversion function, and a line connection module for performing a relay line (E1) connection function for matching with the base station controller 40, It performs amplification, low noise amplification of received signal, frequency down / up conversion, diversity reception through two antennas, high power / low noise amplification, and transmit / receive frequency conversion.

In addition, the modem module provides CDMA channels (pilot channel, synchronization channel, paging channel, access channel, signaling channel, traffic channel, packet traffic channel, packet access channel), digital baseband function processing, CDMA channel coding and decoding related functions. Do this.

The line connection module performs data communication with the base station controller 40 for traffic and control information, and performs a relay line (E1 / HDSL) function for matching the base station controller 40.

The base station controller 40, which controls the base stations 30 and 30 ', is composed of a transcoder module, a call processing module, a switching module, and a matching module. The transcoder module is a 64 Kbps Pulse Code Modulation (PCM) voice encoding signal. It includes a transcoder that performs the conversion function, and echo cancellation is implemented. In addition, the call processing module supports various call processing functions such as incoming / outgoing call processing support and message processing of the base stations 30 and 30 ', subsystem status management in the base station controller 40, and the WLL switch 50 and the subscriber access device 20, 20 ') is a processor that performs functions such as control signal format and has a redundancy structure for system reliability. In addition, the switching module provides a traffic path between the base station matching device and the transcoder in the base station controller 40.

In addition, the matching module is composed of a WLL switch matching module, a base station matching module and a base station operating device matching module, the double WLL switch matching module is installed when the base station controller 40 and the WLL switch 50 remotely E1 / G. 965 Performs the digital middle account function. In addition, the base station matching module performs an E1 / LAPD, HDSL relay line matching function between the base stations 30 and 30 'and the base international controller 40, and the base station operating device matching module is the base station operating device 60 and the base station controller 40. It performs Ethernet / SNMP, FTP, and TELNET matching function.

Next, the base station operating device 60 operates the base station controller 40, the base stations 30 and 30 ′, and the subscriber access devices 20 and 20 ′, and is responsible for maintenance and repair of each device.

As described above, the connection medium between the base station 30, 30 'and the base station controller 40 in the WLL system is implemented as an E1 link, and is provided between the base station 30, 30' and the base station controller 40. The number of E1 links to be defined is 2E1.

Currently, the subscriber capacity provided by the base stations 30 and 30 'is about 30 to 60 channels, and if the base station capacity is further increased to advance to 2FA / 3 sectors, more E1 dedicated lines will be needed. However, it is difficult to rush the E1 leased line if there is a sudden increase in subscribers, as it maintains potential for 2FA / 3 sector capacity on the initial cell plain and does not preempt the E1 leased line first.

Conventional CDMA or PCS systems have adopted the E1 transmission scheme, but do not use the optical transmission scheme. The commercialized part of the wireless optical transmission system is the optical repeater of PCS / CDMA, which is installed in the shaded areas where the base station radio waves are not transmitted well, and the base station RF frequency is directly loaded on the light and transmitted. After modulating to the RF frequency again, it has never been used as a transmission method between the base stations 30 and 30 'and the base station controller 40 to cover the shadow area.

In addition, E1 link is currently provided through HDSL or Fiber Loop Carrier (FLC) system without directly providing E1 leased line. As the capacity of E1 leased line increases, the size of HDSL or FLC system to be installed in telephone company will be increased. do.

FIG. 2 is a conceptual diagram of an E1 link connection between a base station 30, 30 'and a base station controller 40, 40' in a wireless subscriber network (WLL) system according to the prior art. Referring to FIG. The matching device between the base stations 30 and 30 'and the base station controllers 40 and 40' is briefly described. As a method of connecting the base stations 30 and 30 'and the base station controllers 40 and 40' by the E1 link, Since it is expensive to newly provide a leased line in all areas requiring base stations (30,30 '), HDSL equipment or FLC systems that can provide the speed and transmission characteristics of 2.048M provided by E1 leased lines in recent years. Provided using This is provided by using existing lines by using existing 2-wire analog lines and wired optical lines.

However, when they need more capacity, they need to be installed more, but it is difficult to provide a lot of E1 dedicated lines due to local characteristics.

In addition, since the wireline used as the transmission medium for the light currently used has to be laid underground, there is a huge problem of enormous investment cost and maintenance for the installation of the optical line.

Accordingly, the present invention has been proposed to solve the above-described problems in the prior art, and it is possible to connect wirelessly between the base station and the base station controller in the WLL system instead of the E1 matching device. It is an object of the present invention to provide a wireless optical matching device and a method for sufficiently accommodating subscriber capacity with a simple operation and enabling transmission at a high speed (155M to 622Mbps).

1 is a block diagram of a general broadband wireless subscriber network system.

2 is a conceptual diagram of a base station and base station control period E1 link connection in a wireless subscriber network (WLL) system according to the prior art;

3 is a diagram illustrating an embodiment of a base station and base station control period wireless optical matching device in a wireless subscriber network (WLL) system according to the present invention;

4 is a detailed configuration diagram of a base station and a base station control period wireless optical matching device in a wireless subscriber network (WLL) system according to the present invention.

FIG. 5 is a detailed configuration diagram of an embodiment of a multiplexing / demultiplexing unit and a photoelectric conversion unit shown in FIG. 4.

6 is a flowchart illustrating an embodiment of a wireless optical matching method for a base station and a base station control period in a wireless subscriber network (WLL) system according to the present invention.

* Explanation of symbols for main parts of the drawings

30: base station 40: base station controller

31, 41: E1 matching part 32, 42: multiplexing and demultiplexing part

33, 43: photoelectric conversion unit

a, b, c: first to third multiplexer / demultiplexer

d, e: first and second HDB3 matching unit

200, 210: Optical transmitting and receiving unit 220: CPU

230: alarm signal processing unit 240: clock extraction and distribution unit

250: oscillation unit

The present invention for achieving the above object, in the base station and base station control period matching device of each wireless subscriber network (WLL) system having an E1 matching unit, converts the E1 signal output from the E1 matching unit of the base station to digital data Converting the converted digital data into an optical signal having an arbitrary speed, and converting the optical signal received from the base station controller into digital data having an arbitrary speed to match the converted digital data with an E1 matching unit of the base station. First signal conversion means for converting the signal into an E1 signal; A first optical signal for transmitting the optical signal converted by the first signal conversion means to the base station controller in a time division manner, and receiving and providing the optical signal transmitted from the base station controller in a time division manner to the first signal conversion means; Transmitting and receiving means; Converts the E1 signal output from the E1 matching unit of the base station controller into digital data and converts the converted digital data into an optical signal having an arbitrary speed, and converts the optical signal received from the base station into an digital data having an arbitrary speed Second signal converting means for converting the converted digital data into an E1 signal for matching with the E1 matching portion of the base station controller; And a second optical signal for transmitting the optical signal converted by the second signal conversion means to the base station in a time division manner, and receiving the optical signal transmitted from the base station controller in a time division manner and providing the optical signal to the second signal conversion means. An optical signal transmitted from a base station / base station controller is provided in a light matching method applied to a base station and a base station control period optical matching device in a wireless subscriber network (WLL) system. Receiving a first step; A second step of converting the received optical signal into an electrical digital signal and extracting a reference clock signal from the converted digital signal; A third step of extracting a network synchronization clock signal from the extracted reference clock signal and distributing it to each block in the optical matching device; A fourth step of demultiplexing the converted digital signal according to the network synchronization clock signal and converting the converted digital signal into an E1 signal; A fifth step of coding the converted E1 signal into a signal of a physical level capable of E1 matching (HDB3 signal) so as to E1 match with a base station controller / base station; And a sixth step of relocating allocation time in E1 channel expansion. The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 3 is a diagram illustrating an embodiment of a base station and a base station control period wireless optical matching device in a wireless subscriber network (WLL) system according to the present invention. 4 is a detailed configuration diagram of a base station and a base station control period wireless optical matching device in a wireless subscriber network (WLL) system according to the present invention. As shown in FIG. 30 ') and the base transceiver station 200 and 210 are mounted on the sides of the base station controllers 40 and 40', respectively, so that wireless optical communication between the base stations 30 and 30 'and the base station controllers 40 and 40' is performed.

Looking at this in more detail with reference to Figure 4, in the plurality of base stations 30 is configured an E1 matching unit 31 for matching with the E1 link, the E1 signal transmitted through the E1 matching unit 31 is multiplexed / Demultiplexed by the demultiplexer 32 is provided to the photoelectric conversion unit 33.

The photoelectric conversion unit 33 converts the demultiplexed signal output from the multiplexing / demultiplexing unit 32 into an optical signal of 155M and transmits the light transmitting / receiving unit 210 on the base station controller 40 side through the optical transmitting and receiving unit 200. To send).

The optical transmitter / receiver 210 of the base station controller 40 receives a 150M optical signal transmitted from the optical transmitter / receiver 200 of the base station 30 and outputs the optical signal to the photoelectric converter 43.

The photoelectric conversion unit 43 performs photo-electric conversion of the input optical signal of 155M to the multiplexing / demultiplexing unit 42.

The multiplexer / demultiplexer 42 converts the signal multiplexed by the photoelectric converter 43 into an E1 signal and matches the E1 matcher 41 of the base station controller 40. At this time, when transmitting the optical signal from the optical transmitter / receiver 200 on the base station 30 side to the optical transmitter / receiver 210 on the base station controller 40 side, the optical signal transmission method uses a time division method.

Meanwhile, the E1 signal transmitted through the E1 matching unit 41 in the base station controller 40 is demultiplexed by the multiplexing / demultiplexing unit 42 and provided to the photoelectric conversion unit 43.

The photoelectric conversion unit 43 converts the demultiplexed signal output from the multiplexing / demultiplexing unit 42 into an optical signal of 155M to convert the demultiplexed signal into an optical signal of 155M. To send.

The optical transmitter / receiver 200 of the base station 30 receives a 150M optical signal transmitted from the optical transmitter / receiver 210 of the base station controller 40 and outputs the optical signal to the photoelectric converter 33.

The photoelectric conversion unit 33 performs photo-electric conversion of an input optical signal of 155M to the multiplexing / demultiplexing unit 32.

The multiplexer / demultiplexer 32 converts the signal multiplexed by the photoelectric converter 33 into an E1 signal and matches the E1 matcher 31 of the base station 30. In this case, the optical signal transmission method uses a time division method when the optical signal is transmitted from the optical transmitter / receiver 210 on the base station controller 40 side to the optical transceiver 200 on the base station 30 side. That is, in the present invention, as shown in FIG. 3, the photoelectric conversion units 33 and 43 and the multiplexing / demultiplexing unit 32 and the base station 30 and the base station controller 40 before the E1 matching units 31 and 41 are provided. 42) to convert the input optical signal into an E1 signal to transmit and receive. In the E1 frame allocation method, a time division multiplexing method is used to select a channel having a predetermined time zone to the base station 30 and load data at this time. And, if the allocation time is rearranged when the channel is increased, the capacity can be easily increased.

FIG. 5 is a detailed diagram illustrating an embodiment of the multiplexing / demultiplexing unit and the photoelectric conversion unit shown in FIG. 4, and the multiplexing / demultiplexing units 32 and 42 and the photoelectric conversion unit shown in FIG. 4 with reference to FIG. 5. A detailed operation process of (33, 43) will be described.

The photoelectric converters 33 and 43 photoelectrically convert optical signals of 155M to 622M inputted through the optical transceivers 200 and 210 and output them to the multiplexer / demultiplexer 32 and 42. At this time, the clock extraction and distribution unit 240 extracts a reference clock from the signals converted by the photoelectric conversion units 33 and 43 and distributes them to the multiplexing / demultiplexing units 32 and 42, respectively.

The first multiplexer / demultiplexer (a) of the multiplexer / demultiplexer (32, 42) is a clock signal provided from the clock extraction and distribution unit 240 to the 155M ~ 622M signal output from the photoelectric conversion unit (33,43) As a result, the signals are demultiplexed into 45M to 155M signals and output to the second and third multiplexer / demultiplexers b and c, respectively.

The second and third multiplexer / demultiplexers (b, c) demultiplex 45M to 155M signals output from the first multiplexer / demultiplexer (a) into 2.048M E1 signals, and HDB3 matching unit (d, e). Is converted to a physical level HDB3 format with E1 matching. Here, the clock extracting and distributing unit 240 provides 155M to 622M of synchronous clock signals to the first multiplexer / demultiplexer a to synchronize the blocks, and the second and third multiplexers / b. (c) provides 45M to 155M synchronous clock signals, and HDB3 matching units (d, e) distribute 2M synchronous clock signals, respectively.

In addition, the alarm signal processing unit 230 receives a signal error or an alarm signal generated in each block in the multiplexing / demultiplexing units 32 and 42 and reports the signal to a higher level.

Meanwhile, the CPU 220 initializes the blocks and reassigns them when a new link is added to the E1 matching unit 31 of each base station 30.

A matching method corresponding to the operation of the wireless optical matching device between the base station and the base station control in the WLL system according to the present invention will be described step by step with reference to FIG.

6 is a flowchart illustrating a wireless optical matching method between a base station and a base station control in a wireless subscriber network (WLL) system according to the present invention.

First, after turning on the power of each block shown in FIG. 5 (S101), each block is initialized according to the provided synchronous clock signal (S102).

Then, when the optical signal transmitted from the base station or the base station controller through the optical transmission and reception unit (200, 210) is received (S103), after converting the received optical signal into a high-speed digital signal of 155M ~ 622M in the photoelectric conversion unit (33, 43) In operation S104, the clock signal is extracted from the converted electrical signal. At this time, the extracted reference clock signal is provided to the clock extraction and distribution unit 240. The clock extraction and distribution unit 240 extracts the reference clocks provided by the photoelectric conversion units 33 and 43, and then synchronizes each block. A clock signal is provided (S105).

Subsequently, the first multiplexing / demultiplexing unit a demultiplexes the electrical digital high-speed data converted by the photoelectric conversion units 33 and 43 at the corresponding speeds 45M to 155M (S106).

At this time, the demultiplexed signals of 45 to 155M are demultiplexed by the second and third multiplexing / demultiplexing units (b and c) and converted into 2M E1 signals which can be matched to the E1 matching unit 31 and outputted. In operation S107, the HDB3 matching unit d and e transmits the 2M signals input from the second and third multiplexing / demultiplexing units b and c to the E1 matching unit 31 by HDB3 coding (S108).

Next, it is determined whether the reassignment information according to the expansion of the E1 channel is received (S109), and when the channel reassignment information is received, after analyzing the reassignment time slots (S110), the multiplexing / demultiplexing unit (32, 42) The above information is transmitted to enable further extraction and insertion (S111). The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and is not limited to the technical spirit of the present invention. It will be apparent to those skilled in the art that various substitutions, modifications, and alterations are possible.

The present invention as described above, by designing a matching method between the base station and the base station controller matched to the E1 dedicated line by the optical transmission method, the capacity is easy to increase later and easy to maintain, wireless section instead of the wire line currently used as the transmission medium of optical By using, it is possible to reduce the enormous investment cost and maintenance cost invested in the optical line to be installed and to solve the problems that the E1 dedicated line cannot provide by the transmission method using the high speed of light.

Claims (6)

A base station and base station control period matching device of a wireless subscriber network (WLL) system each having an E1 matching unit, Converts the E1 signal output from the E1 matching unit of the base station into digital data and converts the converted digital data into an optical signal having an arbitrary speed, and converts the optical signal received from the base station controller into digital data having an arbitrary speed. First signal converting means for converting the converted digital data into an E1 signal for matching with the E1 matching portion of the base station; A first optical signal for transmitting the optical signal converted by the first signal conversion means to the base station controller in a time division manner, and receiving and providing the optical signal transmitted from the base station controller in a time division manner to the first signal conversion means; Transmitting and receiving means; Converts the E1 signal output from the E1 matching unit of the base station controller into digital data and converts the converted digital data into an optical signal having an arbitrary speed, and converts the optical signal received from the base station into an digital data having an arbitrary speed Second signal converting means for converting the converted digital data into an E1 signal for matching with the E1 matching portion of the base station controller; And A second optical transmission / reception for transmitting the optical signal converted by the second signal conversion means to the base station in a time division manner, and receiving and providing the optical signal transmitted from the base station controller in a time division manner to the second signal conversion means. Way The base station and the base station control period optical matching device in a wireless subscriber network (WLL) system comprising a. The method of claim 1, The first signal conversion means, Demultiplexing the E1 signal output from the E1 matching unit of the base station to convert it into high-speed digital data, and multiplexing / reversing the multiplexed high-speed digital data into an E1 signal for matching with the E1 matching unit of the base station Multiplexer; And The high speed digital data demultiplexed and output by the multiplexing / demultiplexing unit is converted into an optical signal having an arbitrary speed, and the optical signal received from the first optical transmitting / receiving means is converted into high speed digital data to perform the multiplexing / Photoelectric conversion unit output to demultiplexer The base station and the base station control period optical matching device in a wireless subscriber network (WLL) system comprising a. The method of claim 2, The multiplexing / demultiplexing unit, A first multiplexer / demultiplexer for converting high-speed digital data converted by the photoelectric converter into digital data having a speed of 45M to 155M, and extracting and outputting a reference clock; Second and third multiplexer / demultiplexers for converting digital data of 45M to 155M speed outputted from the first multiplexer / demultiplexer into 2M E1 signals according to a provided synchronizer clock signal; HDB3 matching unit (E1 matching) for converting the 2M E1 signal output from the second and third multiplexer / demultiplexer into a physical level signal (HDB3 signal) capable of E1 matching so as to match with the E1 matching unit of the base station / base station controller. Secondary matching); A clock extraction and distribution unit for extracting a network synchronization clock signal from the reference clock signal extracted by the first multiplexer / demultiplexer and providing the second and third multiplexer / demultiplexer and the HDB3 matcher; And Alarm signal processing unit for receiving an alarm signal from each block and reporting to the higher processor The base station and the base station control period optical matching device in a wireless subscriber network (WLL) system comprising a. The method of claim 1, The second signal conversion means, Demultiplexing the E1 signal output from the E1 matching unit of the base station controller to convert it into high-speed digital data, and multiplexing the multiplexed received high-speed digital data into an E1 signal for matching with the E1 matching unit of the base station controller Demultiplexer; And The high speed digital data demultiplexed and output by the multiplexing / demultiplexing unit is converted into an optical signal having an arbitrary speed, and the optical signal received from the second optical transmitting / receiving means is converted into high speed digital data to perform the multiplexing / Photoelectric conversion unit output to demultiplexer The optical matching device of the base station and base station control period in a wireless subscriber network (WLL) system. The method of claim 4, wherein The multiplexing / demultiplexing unit, A first multiplexer / demultiplexer for converting high-speed digital data converted by the photoelectric converter into digital data having a speed of 45M to 155M, and extracting and outputting a reference clock; Second and third multiplexer / demultiplexers for converting digital data of 45M to 155M speed outputted from the first multiplexer / demultiplexer into 2M E1 signals according to a provided synchronizer clock signal; HDB3 matching unit (E1 matching) for converting the 2M E1 signal output from the second and third multiplexer / demultiplexer into a physical level signal (HDB3 signal) capable of E1 matching so as to match with the E1 matching unit of the base station / base station controller. Secondary matching); A clock extraction and distribution unit for extracting a network synchronization clock signal from the reference clock signal extracted by the first multiplexer / demultiplexer and providing the second and third multiplexer / demultiplexer and the HDB3 matcher; And Alarm signal processing unit for receiving an alarm signal from each block and reporting to the higher processor The base station and the base station control period optical matching device in a wireless subscriber network (WLL) system comprising a. In the optical matching method applied to the base station and the base station control period optical matching device in a wireless subscriber network (WLL) system, A first step of receiving an optical signal transmitted from a base station / base station controller; A second step of converting the received optical signal into an electrical digital signal and extracting a reference clock signal from the converted digital signal; A third step of extracting a network synchronization clock signal from the extracted reference clock signal and distributing it to each block in the optical matching device; A fourth step of demultiplexing the converted digital signal according to the network synchronization clock signal and converting the converted digital signal into an E1 signal; A fifth step of coding the converted E1 signal into a signal of a physical level capable of E1 matching (HDB3 signal) so as to E1 match with a base station controller / base station; And Sixth Step of Relocating Allocation Time in E1 Channel Expansion The base station and base station control period optical matching method in a wireless subscriber network (WLL) system comprising a.