KR100248425B1 - ATM switch network of 3D ring as subscriber access network for wired / wireless converged network - Google Patents

Abstract

The present invention relates to a three-dimensional ring ATM switch network as a subscriber access network for a wired / wireless integrated network, each having four input terminals and four output terminals, and including a plurality of 4x4 ATM unit switch elements arranged in three dimensions. The ATM unit switch elements are each formed in a closed loop in the x-axis, y-axis, and z-axis directions to provide wired / wireless integrated network services. The present invention as described above provides a service provider connected to a 3D ring network. As an integrated subscriber access network that provides both wired network services such as telephone, Internet, on-demand video service, and digital broadcasting service, and wireless network services such as mobile phone and wireless data service, the cost of access network built for each service type It is free of maintenance, easy to maintain as a single access network, and can converge broadcasting, communication, and information services.

Description

ATM switch network of 3D ring as subscriber access network for wired / wireless converged network

The present invention relates to an ATM switch network of a three-dimensional ring as a subscriber access network for a wired / wireless integrated network. In particular, the x-axis includes a plurality of 4x4 ATM unit switch elements arranged in three dimensions, each having four input terminals and four output terminals. The present invention relates to an ATM switch network composed of a three-dimensional ring that provides wired / wireless integrated network services by forming closed loops in the y-axis and z-axis directions, respectively.

Conventionally, HFC (Hybrid Fiber / Coax) or Tree & Branch coaxial cable has been used to provide a cable broadcasting service, and a subscriber access network has to be established for each broadcasting network provider.

In addition, in order to provide wired telephony services, each operator established subscriber networks by long distance (long distance) or downtown (short distance) telephone providers, and data communication network operators also built and operated subscriber access networks separately for each operator. Network operators have also established separate dedicated access networks as base stations on a microcell and picocell basis.

Therefore, conventionally, a wired network for providing wired communication or a broadcast service and a wireless network for providing a wireless communication service are separately configured.

In order to solve this problem, the present invention provides both a wired network service and a wireless network service as a single access network, and integrates wired / wireless as an integrated subscriber access network that combines broadcasting and information services. To provide a three-dimensional ring ATM switch network as a subscriber access network for the network.

The ATM switch network provided by the present invention has four input stages and four output stages, and a plurality of 4x4 ATM unit switch elements arranged in three dimensions are closed loops in the x-axis, y-axis, and z-axis directions, respectively. An ATM switch network providing a wireless integrated network service is provided.

In this case, the ATM unit switch element may include a first input terminal for inputting a signal outside the ATM switch network, a first output terminal for outputting a signal outside the ATM switch network, and another ATM unit in a closed loop formed on the x-axis. A signal from a second input terminal for inputting a signal from a switch element, a second output terminal for outputting a signal to another ATM unit switch element in a closed loop formed on the x-axis, and a signal from another ATM unit switch element in a closed loop formed on the y-axis A third input terminal for inputting a signal, a third output terminal for outputting a signal to another ATM unit switch element in the closed loop formed on the y-axis, and a second input unit for inputting a signal from another ATM unit switch element in the closed loop formed on the z-axis And a fourth output stage for outputting a signal to another ATM unit switch element in a closed loop formed on the z axis. In addition, the network provided by the present invention is selected to provide all the services provided by the wired or wireless network.

1 is a structural diagram of a 4x4 ATM unit switch element;

2 is a three-dimensional ring network diagram composed of 4x4 ATM unit switch elements according to the present invention;

3 is a block diagram of a subscriber access network accommodating wired network services according to an embodiment of the present invention;

4 is a flowchart of a CATV broadcasting service according to an embodiment of the present invention;

5 is a flowchart of an on-demand video service according to an embodiment of the present invention;

6 is a flowchart of a landline telephone service according to an embodiment of the present invention;

7 is a diagram illustrating a subscriber access network structure accommodating a wireless network service according to an embodiment of the present invention;

8 is a flowchart of a wireless telephone service according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,

122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132,

133, 134, 135, 136, 137: 4x4 ATM Unit Switch Element

IS: input terminal of switch element OS: output terminal of switch element

IE: Input of expansion ring OE: Output of expansion ring

IH: Input of horizontal ring OH: Output of horizontal ring

IV: Vertical Ring Input OV: Vertical Ring Output

NT: Network Termination

L, M, N: Natural Number

A, B: ATM cell of data for mobile communication service

P, Q: ATM cell of data for wireline telephone service

x: ATM cell of data for cable broadcasting service

y: ATM cell of data for video service on demand

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

1 is a structural diagram of a 4x4 ATM unit switch element, Figure 2 is a configuration diagram of a three-dimensional ring network composed of 4x4 ATM unit switch elements according to the present invention, Figure 3 is a wired network service according to an embodiment of the present invention 4 is a flowchart of a CATV broadcasting service according to an embodiment of the present invention, FIG. 5 is a flowchart of an on-demand video service according to an embodiment of the present invention, and FIG. 6 is an embodiment of the present invention. 7 is a flowchart illustrating a wired telephone service according to an embodiment, and FIG. 7 is a schematic diagram of a subscriber access network accommodating wireless network services according to an embodiment of the present invention, and FIG. 8 is a flowchart of a wireless telephone service according to an embodiment of the present invention.

Referring to FIG. 1, a 4x4 ATM unit switch device according to the present invention includes an input terminal IS for inputting a signal outside the ATM switch network, an output terminal OS for outputting a signal outside the ATM switch network, and the x An input terminal (IH) for inputting a signal from another ATM unit switch element in a closed loop formed by an axis, an output terminal (OH) for outputting a signal to another ATM unit switch element in a closed loop formed by the x axis, and the y axis An input terminal IV for inputting a signal from another ATM unit switch element in the closed loop formed, an output terminal OV for outputting a signal to another ATM unit switch element in the closed loop formed in the y-axis, and a closed loop formed in the z-axis An input terminal (IE) for inputting a signal from another ATM unit switch element in a loop and an output for outputting a signal to another ATM unit switch element in a closed loop formed on the z axis It comprises a stage (OE).

Referring to FIG. 2, the three-dimensional ring network according to the present invention includes the plurality of 4x4 ATM unit switch elements 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123. , 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137 are arranged in three dimensions, and each of the 4x4 ATM unit switch elements are x-axis, y-axis, Each closed loop is formed in the z-axis direction.

The formation of the closed loop as described above will be described in detail with reference to the drawings.

First, a closed loop in the y-axis direction will be described. The output terminal OV of the 4x4 ATM unit switch element 000 (111) is connected to the input terminal IV of the 4x4 ATM unit switch element 001 120 by a physical path, and the 4x4 The output terminal OV of the ATM unit switch element 001 120 is connected to the input terminal IV of the 4x4 ATM unit switch element 00N 129 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 00N 129. Is connected to the input terminal IV of the 4x4 ATM unit switch element 000 (111) by a physical path to form a closed loop of a vertical ring (y-axis direction). The output terminal OV of the 4x4 ATM unit switch element 010 (114) is connected to the input terminal IV of the 4x4 ATM unit switch element 011 (123) by a physical path, and the output terminal of the 4x4 ATM unit switch element 011 (123). OV is connected to the input terminal IV of the 4x4 ATM unit switch element 01N 132 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 01N 132 is a 4x4 ATM unit switch element 010 114. It is connected to the input terminal (IV) of by a physical path to form a closed loop of the vertical ring (y-axis direction). In addition, the output terminal OV of the 4x4 ATM unit switch element 0M0 117 is connected to the input terminal IV of the 4x4 ATM unit switch element 0M1 126 by a physical path, and the output terminal of the 4x4 ATM unit switch element 0M1 126 is connected. (OV) is connected to the input terminal IV of the 4x4 ATM unit switch element 0MN 135 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 0MN 135 is a 4x4 ATM unit switch element 0M0 (117). It is connected to the input terminal (IV) of by a physical path to form a closed loop of the vertical ring (y-axis direction).

Closed loop formation in the x-axis direction is first performed by connecting the output terminal OH of the 4x4 ATM unit switch element 000 (111) to the input terminal IH of the 4x4 ATM unit switch element 010 (114) by a physical path. The output terminal OH of the switch element 010 114 is connected to the input terminal IH of the 4x4 ATM unit switch element 0M0 117 by a physical path, and the output terminal OH of the 4x4 ATM unit switch element 0M0 117 is 4x4. It is connected to the input terminal IH of the ATM unit switch element 000 (111) by a physical path to form a closed loop of a horizontal ring (x-axis direction). In addition, the output terminal OH of the 4x4 ATM unit switch element 001 120 is connected to the input terminal IH of the 4x4 ATM unit switch element 011 123 by a physical path, and the output terminal of the 4x4 ATM unit switch element 011 (123). (OH) is connected to the input terminal IH of the 4x4 ATM unit switch element 0M1 126 by a physical path, and the output terminal OH of the 4x4 ATM unit switch element 0M1 126 is a 4x4 ATM unit switch element 001 (120). It is connected to the input terminal (IH) of the physical path to form a closed loop of the horizontal ring (x-axis direction). In addition, the output terminal OH of the 4x4 ATM unit switch element 00N 129 is connected to the input terminal IH of the 4x4 ATM unit switch element 01N 132 by a physical path, and the output terminal of the 4x4 ATM unit switch element 01N 132 is provided. (OH) is connected to the input terminal (IH) of the 4x4 ATM unit switch element 0MN 135 by a physical path, and the output terminal (OH) of the 4x4 ATM unit switch element 0MN 135 is a 4x4 ATM unit switch element 00N (129). It is connected to the input terminal (IH) of the physical path to form a closed loop of the horizontal ring (x-axis direction). Here, the mentioned 4x4 ATM unit switch elements 111, 114, 117, 120, 123, 126, 129, 132, 135 are "0", "10", "0M0", "1", "11", respectively. , Group "0" having logical addresses of "0M1", "00N", "01N" and "0MN" and forming a vertical ring (closed loop in the y-axis direction) and a horizontal ring (closed loop in the x-axis direction) Configure.

In addition, the output terminal OV of the 4x4 ATM unit switch element 100 112 is connected to the input terminal IV of the 4x4 ATM unit switch element 101 121 by a physical path, and the output terminal of the 4x4 ATM unit switch element 101 121 is output. An OV is connected to the input terminal IV of the 4x4 ATM unit switch element 10N 130 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 10N 130 is a 4x4 ATM unit switch element 100 112. It is connected to the input terminal (IV) of by a physical path to form a closed loop of the vertical ring (y-axis direction). The output terminal OV of the 4x4 ATM unit switch element 110 115 is connected to the input terminal IV of the 4x4 ATM unit switch element 111 124 by a physical path, and the output terminal of the 4x4 ATM unit switch element 111 124 is provided. OV is connected to the input terminal IV of the 4x4 ATM unit switch element 11N 133 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 11N 133 is a 4x4 ATM unit switch element 110 115. It is connected to the input terminal (IV) of by a physical path to form a closed loop of the vertical ring (y-axis direction). In addition, the output terminal OV of the 4x4 ATM unit switch element 1M0 118 is connected to the input terminal IV of the 4x4 ATM unit switch element 1M1 127 by a physical path, and the output terminal of the 4x4 ATM unit switch element 1M1 127 is provided. (OV) is connected to the input terminal IV of the 4x4 ATM unit switch element 1MN 136 by a physical path, and the output terminal OV of the 4x4 ATM unit switch element 1MN 136 is a 4x4 ATM unit switch element 1M0 118. It is connected to the input terminal (IV) of by a physical path to form a closed loop of the vertical ring (y-axis direction).

Meanwhile, the output terminal OH of the 4x4 ATM unit switch element 100 112 is connected to the input terminal IH of the 4x4 ATM unit switch element 110 115 by a physical path, and the output terminal of the 4x4 ATM unit switch element 110 115 is output. (OH) is connected to the input terminal IH of the 4x4 ATM unit switch element 1M0 118 by a physical path, and the output terminal OH of the 4x4 ATM unit switch element 1M0 118 is a 4x4 ATM unit switch element 100 (112). It is connected to the input terminal (IH) of the physical path to form a closed loop of the horizontal ring (x-axis direction). The output terminal OH of the 4x4 ATM unit switch element 101 121 is connected to the input terminal IH of the 4x4 ATM unit switch element 111 124 by a physical path, and the output terminal of the 4x4 ATM unit switch element 111 124 is provided. (OH) is connected to the input terminal IH of the 4x4 ATM unit switch element 1M1 127 by a physical path, and the output terminal OH of the 4x4 ATM unit switch element 1M1 127 is a 4x4 ATM unit switch element 101 (121). It is connected to the input terminal (IH) of the physical path to form a closed loop of the horizontal ring (x-axis direction). In addition, the output terminal OH of the 4x4 ATM unit switch element 10N 130 is connected to the input terminal IH of the 4x4 ATM unit switch element 11N 133 by a physical path, and the output terminal of the 4x4 ATM unit switch element 11N 133 is provided. (OH) is connected to the input terminal IH of the 4x4 ATM unit switch element 1MN 136 by a physical path, and the output terminal OH of the 4x4 ATM unit switch element 1MN 136 is connected to the 4x4 ATM unit switch element 10N 130. It is connected to the input terminal IH by a physical path to form a closed loop of the horizontal ring (x-axis direction). The 4x4 ATM unit switch elements 112, 115, 118, 121, 124, 127, 130, 133, and 136 mentioned herein are "100", "110", "1M0", "101", "111", " 1M1 "," 10N "," 11N "and" 1MN "form a group" 1 "which has a logical address and forms a vertical ring (closed loop in the y-axis direction) and a horizontal ring (closed loop in the x-axis direction). .

The 4x4 ATM unit switch elements 113, 116, 119, 122, 125, 128, 131, 134, and 137 form a closed loop in the y-axis direction and the x-axis direction in the same manner as described above. The unit switch elements each have a logical address of "L00", "L10", "LM0", "L01", "L11", "LM1", "L0N", "L1N" and "LMN" and the vertical ring (y-axis). Direction) and a horizontal ring (x-axis direction) to form a group "L".

At this time, the output terminal OE of the 4x4 ATM unit switch elements 111, 114, 117, 120, 123, 126, 129, 132, and 135 forming the group "0" is 4x4 forming the group "1". 4x4 ATM unit switch elements connected in physical paths to the input terminals IE of the ATM unit switch elements 112, 115, 118, 121, 124, 127, 130, 133, and 136, respectively, forming a group "1" The output terminal IE of (112, 115, 118, 121, 124, 127, 130, 133, 136) has 4x4 ATM unit switch elements 113, 116, 119, 122, 125, 128 forming a group "L". , 131, 134, 137 are connected to the input terminal (IE) by the physical path, respectively. The output terminal IE of the 4x4 ATM unit switch elements 113, 116, 119, 122, 125, 128, 131, 134, and 137 forming the group "L" is a 4x4 ATM unit forming the group "0". Input terminals IE of the switch elements 111, 114, 117, 120, 123, 126, 129, 132, and 135 are respectively connected by physical paths to form expansion rings (closed loops in the z-axis direction).

As described above, the present invention provides 4x4 ATM unit switch elements 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128 , 129, 130, 131, 132, 133, 134, 135, 136 and 137 constitute a three-dimensional ring with a vertical ring (y-axis direction), a horizontal ring (x-axis direction) and an expansion ring (z-axis direction). The physical paths connecting each 4x4 ATM unit switch element form a single link by digital electrical or optical signals.

FIG. 3 is a block diagram of a subscriber access network accommodating wired network service according to an embodiment of the present invention. Referring to FIG. 3, for providing a CATV broadcasting service to a three-dimensional ring network as shown in FIG. 2 to provide a wired network service. Head End (1) and Video Server (2) for video-on-demand service (2) are directly or 4x4 ATM units over Core Network or Optical Transmission Network 10 It is connected to the input terminal (IS) and the output terminal (OS) of the switch element L00 (113), and the digital electronic exchange (3) for wireline telephone service is the input terminal (IS) and the output terminal (4) of the 4x4 ATM unit switch element 001 (120) ( OS). In addition, the subscriber terminal 30 for receiving CATV broadcast is connected to the input terminal (IS) and output terminal (OS) of the 4x4 ATM unit switch element 00N 129 through NT 20, which is a network termination device, and receives on-demand video. The subscriber terminal 31 and the wired telephone terminal 32 for connection are connected to the input terminal IS and the output terminal OS of the 4x4 ATM unit switch element 0MN 135 through NT 21 which is a network termination device.

The service flow of providing various wired network services with a 3D ring network as shown in FIG. 3 will now be described.

4 is a flowchart illustrating a CATV broadcasting service among the wired network services, wherein a service start request signal, a CATV program reception, and a service end request signal mapped to an ATM cell between the subscriber terminal 30 and the CATV head end 1 are each 4x4. A process of providing a CATV broadcast service in a subscriber access network is shown by performing cell switching through ATM unit switches 113, 122, 129, 130, and 131.

Referring to FIG. 3 and FIG. 4, the flow of CATV broadcasting service will be described first. When a corresponding CATV program is requested from a self-top unit 30 to receive the CATV broadcasting service, the request signal is networked. It is input to the input terminal IS of the 4x4 ATM unit switch element 00N 129 via NT (Network Termination) 20, which is an end device, and the 4x4 ATM unit switch element 00N 129 receives a request signal from the input terminal IS. Cell switching is performed to the output terminal OE. Then, the request signal is input to the input terminal IE of the ATM unit switch element 10N 130, and output to the output terminal OE by cell switching of the 4x4 ATM unit switch element 10N 130, thereby providing a 4x4 ATM unit switch element. It is input to the input terminal IE of the L0N 131, is output to the output terminal OV by cell switching of the 4x4 ATM unit switch element L0N 131, and is input to the input terminal IV of the 4x4 ATM unit switch element L00 113. Is entered. The 4x4 ATM unit switch element L00 113 outputs the CATV service request signal input by cell switching to the output terminal OS.

The CATV service request signal of the subscriber station 30 passing through the path in the three-dimensional ring network is provided through the core network or the optical transmission network 10 connected to the 4x4 ATM unit switch element L00 113 to provide a CATV service ( Is delivered to 1).

Then, the head end 1 searches for the CATV program requested by the subscriber station 30 and retrieves the corresponding CATV program information X from the 4x4 ATM unit switch element L00 113 through the core network or the optical transmission network 10. Input to the input terminal IS, the CATV program information (X) input is output to the output terminal (OV) by the cell switching of the 4x4 ATM unit switch element L00 (113) is input terminal of the 4x4 ATM unit switch element L01 (122) It is entered as (IV). The CATV program information X outputted to the output terminal OV by cell switching of the 4x4 ATM unit switch element L01 122 is input to the input terminal IV of the 4x4 ATM unit switch element L0N 131 and outputted to the output terminal ( OE) to the input terminal IE of the 4 × 4 ATM unit switch element 00N 129. The 4x4 ATM unit switch element 00N 129 outputs the CATV program information X input through the input terminal IE to the output terminal OS by cell switching. CATV program information (X) transmitted through such a path is to start the program service in the subscriber terminal 30 via the network termination device NT (20).

The CATV program service started through such a path is transferred from the head end 1 to the subscriber terminal 30 through the same path or another path as described above until the subscriber terminal 30 requests the end of the service. When the subscriber station 30 requests the termination of the service, the termination request signal of the subscriber station 30 passes through the same path as that of the subscriber station 30 requesting the program information to the head end 1. It is transmitted to the head end 1, at which time the CATV service is terminated.

Fig. 5 shows a signal flow diagram for the video on demand service (VOD), in which a service start request signal, an on-demand video program reception, and a service end request signal mapped to an ATM cell between the subscriber terminal 31 and the video server 2 are respectively represented. A process of providing on-demand video service in a subscriber access network is shown by performing cell switching through 4x4 ATM unit switches 113, 116, 114, 119, 118, 117, 126, 135.

Referring to FIGS. 3 and 5, first, a service start request signal mapped to an ATM cell from a set-top unit 31 that wants to receive an on-demand video service is 4x4 through an NT 21 that is a network end device. When transferred to the input terminal IS of the ATM unit switch element 0MN 135, the 4x4 ATM unit switch element 0MN 135 outputs a service start request signal to the output terminal OV through cell switching, thereby providing a 4x4 ATM unit switch element 0M0. Input to input terminal (IV) of (117). The 4x4 ATM unit switch element 0M0 117 cell-switches this signal to the output terminal OE, transmits it to the input terminal IE of the 4x4 ATM unit switch element 1M0 118, and transmits the 4x4 ATM unit switch element 1M0 118. ), Cell switching is performed from the input terminal IE to the output terminal OE. The signal output from the output terminal OE of the 4x4 ATM unit switch element 1M0 118 is transmitted to the input terminal IE of the 4x4 ATM unit switch element LM0 119, and the cell of the 4x4 ATM unit switch element LM0 119 is transmitted. It is output to the output terminal OH by switching and transmitted to the input terminal IH of the 4x4 ATM unit switch element L00 113. Then, the 4x4 ATM unit switch element L00 113 outputs the service request signal to the output terminal OS by cell switching.

The video service request signal of the subscriber station 31 passing through the path in the 3D ring network is a video providing the on-demand video service through the core network or the optical transmission network 10 connected to the 4x4 ATM unit switch element L00 113. It is passed to the server 2.

Then, the video server 2 searches for the on-demand video program requested by the subscriber station 31 and switches the data Y, which maps the corresponding program to an ATM cell, through the core network or the optical transmission network 10, and switches 4x4 ATM units. Input is made to the input terminal IS of the element L00113.

The 4x4 ATM unit switch element L00 113 performs cell switching from the input terminal IS to the output terminal OH, whereby the 4x4 ATM unit switch element L10 (116) receives program data Y from the input terminal IH. ) Performs cell switching from the input terminal IH to the output terminal OE, and then transmits the program data Y to the input terminal IE of the 4x4 ATM unit switch element 010 114. The 4x4 ATM unit switch element 010 (114) transmits the program data (Y) to the input terminal (IH) of the 4x4 ATM unit switch element 0M0 (117) via an output terminal (OH) by cell switching, and the 4x4 ATM unit switch. The element 0M0 117 transmits to the 4x4 ATM unit switch element 0M1 126 via the output terminal OV by cell switching. When the 4x4 ATM unit switch element 0M1 126 switches the cell from the input terminal IV to the output terminal OV, and transmits the 4x4 ATM unit switch element 0MN 135 to the 4x4 ATM unit switch element 0MN 135, IV) cell switching to the output terminal (OS).

The program data (Y) transmitted through such a path is transmitted to the subscriber station (31) through the network termination device NT (21), and the subscriber station (31) earnestly receives the corresponding video program service (Y) on demand. At the end of the service, the end request signal is mapped to the ATM cell and transmitted to the input terminal IS of the 4x4 ATM unit switch element 0MN 135 via the network termination device NT21. Then, the 4x4 ATM unit switch element 0MN 135 performs cell switching to output the termination request signal to the output terminal OV, and receives the termination request signal through the input terminal IV. Performs cell switching to the output terminal OE and transmits it to the input terminal IE of the 4 × 4 ATM unit switch element 1M0 118. The 4x4 ATM unit switch element 1M0 118 is transmitted to the input terminal IE of the 4x4 ATM unit switch element LM0 119 through cell switching through an output terminal OE, and the 4x4 ATM unit switch element LM0 119 is an output terminal. Cell switching is performed at (OH), and the service termination request signal is transmitted to the input terminal IH of the 4 × 4 ATM unit switch element L00 113.

Then, the 4x4 ATM unit switch element L00 113 transmits a service termination request signal to the output terminal OS by cell switching, and the service termination request signal is transmitted to the video server 2 through the core network 10. As a result, the video on demand service is finally terminated.

Fig. 6 shows a signal flow diagram for wireline telephone service, in which voice data or signals carried on a circuit channel between a wireline telephone 32 and a digital electronic switchboard are mapped to an ATM cell to transmit, receive and transmit outgoing signals and communicative voice data. A hook on signal, which is a call termination request signal, performs cell switching through each of the ATM unit switches 111, 117, 120, 129, 132, and 135, indicating a process of providing wireline telephone service as a subscriber access network. have.

3 and 6, first, an outgoing signal P mapped to an ATM cell from the wired telephone 32 to the input terminal IS of the 4 × 4 ATM unit switch element 0MN 135 through the network termination device NT 21. Is input. Then, the 4x4 ATM unit switch element 0MN 135 outputs an input signal to the output terminal OV through cell switching, and the outgoing signal P input to the input terminal IV of the 4x4 ATM unit switch element 0M0 117. Is switched to the output stage OH. The outgoing signal P is transmitted to the input terminal IH of the 4x4 ATM unit switch element 000 (111), and cell switching is performed to the output terminal OV to the input terminal IV of the 4x4 ATM unit switch element 001 (120). The cell switching is performed from the 4x4 ATM unit switch element 001 120 to the output terminal OS, and then transferred to the digital electronic exchange 3.

Then, the digital electronic switch 3 converts the outgoing signal P into circuit channel data, exchanges it with a channel of an existing circuit exchange, and exchanges and outputs the corresponding response signal or the response data of the other party. At this time, if the other party's voice data of the communicable data is input to the input terminal IS of the 4x4 ATM unit switch element 001 120 as the data Q mapped to the ATM cell, the 4x4 ATM unit switch element 001 120 outputs the output terminal OV. Cell switching is performed and transmitted to the input terminal IV of the 4 × 4 ATM unit switch element 00N 129. The 4x4 ATM unit switch element 00N 129 transmits to the 4x4 ATM unit switch element 01N 132 after cell switching is performed to the output terminal OH, and the input terminal IH of the 4x4 ATM unit switch element 01N 132 is transmitted. After performing cell switching to the output terminal (OH) in the 4x4 ATM unit switch element 0MN (135) is transmitted to the input terminal (IH). In the 4x4 ATM unit switch element 0MN 135, the inputted cell data Q is cell-switched to the output terminal OS, and is transmitted to the wired telephone 32 via the network termination device NT 21. At this time, the network termination device 21 converts the cell data Q into voice data.

A voice signal is transmitted between the landline phone 32 and the digital electronic exchange 3 by such a path, and when the landline phone 32 wants to terminate the landline telephone service, the wired phone 32 is hooked up ( Hook on).

Then, the signal corresponding to the hook (Hook on) is converted into an ATM cell in the network termination device NT (21) and transmitted to the input terminal (IS) of the 4x4 ATM unit switch element 0MN 135. In the 4x4 ATM unit switch element 0MN 135, the hook-on signal is switched to the output terminal OV, and transmitted to the input terminal IV of the 4x4 ATM unit switch element 0M0 117. In the ATM unit switch element 0M0 117, cell switching is performed to the output terminal OH and transmitted to the input terminal IH of the 4 × 4 ATM unit switch element 000 111. Cell switching is performed to the output terminal OV of the 4x4 ATM unit switch element 000 (111) and transmitted to the input terminal IV of the 4x4 ATM unit switch element 001 (120), and the 4x4 ATM unit switch element 001 (120). The ATM cell, that is, the hook on signal, transmitted to the input terminal IV of the s) is transferred to the digital electronic switch 3 by performing cell switching to the output terminal OS, so that the landline telephone service is finally terminated.

FIG. 7 is a block diagram of a subscriber access network accommodating a wireless network service according to an embodiment of the present invention. Referring to FIG. 7, a wireless telephone service is provided in a three-dimensional ring network as shown in FIG. 2 to provide a wireless network service. Microcell Base Station (22), Picocell Base Station (23) and Mobile Switching Unit (4) providing 4x4 ATM unit switching elements 113, 130 and 135, respectively, IS) and output terminal (OS).

At this time, the microcell base station 22 communicates with the mobile telephone terminal 34, and the picocell base station 23 communicates with the mobile telephone 33.

8 is a flowchart of a wireless telephone service according to an embodiment of the present invention. Referring to FIGS. 7 and 8, the wireless telephone service flow will be described below.

First, an outgoing signal A converted from a high frequency modulated signal to a digital ATM cell signal from a mobile phone 33 to a picocell base station 23 is input to a 4x4 ATM unit switch element 10N 130 ( When input to IS), the 4x4 ATM unit switch element 10N 130 switches the cell to an output terminal OH and inputs the outgoing signal A to the input terminal IH of the 4x4 ATM unit switch element 11N 133. The 4x4 ATM unit switch element 11N 133 also performs cell switching to the output terminal OH, and the outgoing signal A of the ATM cell is input to the input terminal IH of the 4x4 ATM unit switch element 1MN 136 and is output. Cell switching is performed at OE and transmitted to the input terminal IE of the 4x4 ATM unit switch element LMN 137. The 4x4 ATM unit switch element LMN 137 performs cell switching to an output terminal OE, and the outgoing signal A outputted to the output terminal OE is an input terminal IE of the 4x4 ATM unit switch element 0MN 135. Exchanged at the mobile switching center 4, which is transmitted to the output terminal OS by cell switching of the 4x4 ATM unit switch element 0MN 135, and receives the outgoing signal A through the path. Is done.

The data A exchanged at the mobile telephone exchange 4 is again input to the input terminal IS of the 4x4 ATM unit switch element 0MN 135, and the 4x4 ATM unit switch element 0M0 through the output terminal OV by cell switching. Is transmitted to an input terminal IV of 117. The 4x4 ATM unit switch element 0M0 117 transmits the data A to the input terminal IE of the 4x4 ATM unit switch element 1M0 118 by cell switching via the output terminal OE, and the 4x4 ATM unit switch. The device 1M0 118 performs cell switching to the output terminal OE, and then transfers the data A to the input terminal IE of the 4 × 4 ATM unit switch element LM0 119. The 4x4 ATM unit switch element LM0 119 performs cell switching to the output terminal OH, and then transmits it to the input terminal IH of the 4x4 ATM unit switch element L00 113, and the 4x4 ATM unit switch element L00 113. ), Cell switching is performed to the output terminal OS so that data A is transmitted to the mobile telephone terminal 34 through the microcell base station 22 of the microcell.

Eventually, the data A transmitted from the mobile phone terminal 33 passes through the Picocell Base Station 23, the 4x4 ATM unit switch element 130, 133, 136, 137, 135 and the mobile telephone switch 4 The data A exchanged by the mobile telephone exchange 4 is performed by cell switching in the 4x4 ATM unit switch elements 135, 117, 118, 119, and 113, respectively. To the mobile phone terminal 34 via.

On the contrary, in FIG. 8, the response data B generated by the mobile phone terminal 34 is input to the input terminal IS of the 4x4 ATM unit switch element L00 113 to perform cell switching to the output terminal OE, and the 4x4 ATM unit. Cell switching is performed to the output terminal IE of the switch device 000111 and transmitted to the input terminal IV of the 4x4 ATM unit switch device 001 120. The 4x4 ATM unit switch element 001 120 outputs the response data B to the output terminal OV by cell switching, and inputs it to the input terminal IV of the 4x4 ATM unit switch element 00N 129. The 4x4 ATM unit switch element 00N 129 performs cell switching from the input terminal IV to the output terminal OH, and then outputs the response data B to the input terminal IH of the 4x4 ATM unit switch element 01N 132. To send. The 4x4 ATM unit switch element 01N 132 performs cell switching to the output terminal OH to transmit response data B to the input terminal IH of the 4x4 ATM unit switch element 0MN 135, and the 4x4 ATM unit switch element The 0MN 135 cell switches to the output terminal OS and sends the response data B to the mobile telephone exchange 4. The mobile telephone exchange 4 exchanges the response data B through the corresponding processing, and the exchanged response data B is retransmitted to the input terminal IS of the 4x4 ATM unit switch element 0MN 135, Cell switching is performed to the output terminal OH and transmitted to the input terminal IH of the 4 × 4 ATM unit switch element 00N 129. The 4x4 ATM unit switch element 00N 129 performs cell switching from the input terminal IH to the output terminal OE, and then transfers the cell to the input terminal IE of the 4x4 ATM unit switch element 10N 130. In the device 10N 130, cell switching is performed to the output terminal OS. The response data B in which the cell switching is performed in the 4x4 ATM unit switch element 10N 130 is transmitted to the mobile phone terminal 33 via the Picocell Base Station 23.

Eventually, the data B transmitted from the mobile phone terminal 34 is transferred to the microcell base station 22, the 4x4 ATM unit switch elements 113, 111, 120, 129, 132, 135, and the mobile telephone exchange ( 4) and 4x4 ATM unit switch elements 135, 129 and 130, respectively, cell switching was performed and transferred to the mobile phone terminal 33 via the Picocell Base Station 23.

When the three-dimensional ring network of the present invention is configured as described above, both wired and wireless network services can be provided according to various service providers connected to the ring network.

As described above, the present invention provides an integrated subscriber access that provides both wired network services such as telephone, Internet, on-demand video service, and digital broadcasting service, and wireless network services such as mobile phone and wireless data service according to a service provider connected to a 3D ring network. As a network, there is no cost burden of an access network built for each service type, and maintenance is easy as a single access network, and broadcasting, communication, and information services can be converged. In addition, there is an advantage that can provide low-speed to high-speed data, can provide real-time and non-real-time data services at the same time, can provide a symmetric data service and an asymmetric data service.

Claims (5)

4 input terminals and 4 output terminals, each comprising a plurality of 4x4 ATM unit switch elements arranged in three dimensions, The ATM unit switch elements are formed in a closed loop in the x-axis, y-axis, and z-axis directions, respectively. 3D ring ATM switch network as a subscriber access network for a wired / wireless integrated network, characterized by providing wired / wireless integrated network services. The method of claim 1, The ATM unit switch element A first input terminal for inputting a signal external to the ATM switch network; A first output terminal for outputting a signal to the outside of the ATM switch network; A second input terminal for inputting a signal from another ATM unit switch element in a closed loop formed on the x-axis; A second output terminal for outputting a signal to another ATM unit switch element in a closed loop formed on the x-axis; A third input terminal for inputting a signal from another ATM unit switch element in a closed loop formed on the y axis; A third output terminal for outputting a signal to another ATM unit switch element in a closed loop formed on the y axis; A fourth input terminal for inputting a signal from another ATM unit switch element in a closed loop formed on the z axis; And a fourth output stage for outputting a signal to another ATM unit switch element in a closed loop formed in the z-axis. The method of claim 1, The ATM switch network When supporting cable broadcasting service A head end for providing cable television (CATV) service and a video server for providing on-demand video service to the input and output of one of the plurality of 4x4 ATM switch elements, After connecting subscriber terminals for receiving cable television (CATV) service or video on demand service to the input and output of the other one of the plurality of 4x4 ATM switch elements, 3D ring as a subscriber access network for wired / wireless converged networks, characterized in that the head end or the video server and the subscriber station can exchange data with each other by controlling the switching of the plurality of 4x4 ATM switch elements. ATM switch network. The method of claim 1, The ATM switch network If you support landline phone service A digital electronic exchange providing wireline telephone service to the input and output of one of said 4x4 ATM switch elements, After connecting the subscriber terminal for receiving wired telephone service to the input and output of the other one of the plurality of 4x4 ATM switch elements, 3D ring ATM switch as a subscriber access network for wired / wireless converged networks, characterized in that the switching of the plurality of 4x4 ATM switch elements enables the digital electronic switch and the subscriber station to exchange data with each other. network. The method of claim 1, The ATM switch network If you support wireless phone service Connecting a microcell base station that wirelessly communicates with a first user to be provided with a wireless telephone service, to an input and an output of one of the plurality of 4x4 ATM switch elements, Connecting a picocell base station that wirelessly communicates with a second user who wishes to communicate wirelessly with the first user to an input and an output of another one of the plurality of 4x4 ATM switch elements, Connecting a mobile telephone switchboard for controlling communication between the microcell base station and the picocell base station to another input and output of the plurality of 4x4 ATM switch elements, A wired / wireless integrated network for controlling switching of the plurality of 4x4 ATM switch elements to exchange data with the microcell base station and the mobile telephone exchange or the picocell base station during the mobile telephone exchange. 3D ring ATM switch network as a subscriber access network.

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