KR20180082151A - Integrated Wired/Wireless 5G Access Network System and Method Based on Optic Sharing - Google Patents

Abstract

The present invention relates to a wire-wireless integrated 5G access network system based on optical fiber sharing and a method thereof. The access network system comprises: a plurality of station-side integrated access devices integrally connected in a plug-in manner between a plurality of station-side devices and one end of one shared integrated channel; and a plurality of subscriber-side integrated access devices connected in a cascade manner such that each service is branched at each branch point between a plurality of subscriber-side devices corresponding to the plurality of station-side devices per service and the other end of the one shared integrated channel.

Description

TECHNICAL FIELD [0001] The present invention relates to a wired / wireless integrated 5G access network system and method based on optical cable sharing,

The present invention relates to a wired / wireless integrated 5G access network system and method, and more particularly, to a wired / wireless integrated 5G access network system and method capable of cost-effectively providing a 5G access network by building a wired / wireless integrated access network by sharing one optical cable will be.

The existing wired and wireless access networks are separated by service, and an access network is constructed through a dedicated optical cable of each service. First, with reference to FIG. 1, a description will be given of a relationship between a general line service, a corporate leased line, a fiber-to-the-home (FTTH) and a 5G (5Generation) wireless service to be constructed in the future and a problem of a conventional access network structure.

As shown in FIG. 1, the current wired and wireless access network structure, which is generally considered, uses a separate optical cable for each type of service, which is installed along an integrated channel from a fiber distribution frame (FDF). The service is provided to the subscribers through the first branch (manhole) and the second branch (optical fiber box installed in the pole or the building). Although only one subscriber is illustrated for convenience in the FTTH service of FIG. 1, in practice, the RN (Remote Node) branch provides a 1: N multiple access function to a plurality of subscribers in the same area.

In the case of the conventional 4G LTE wireless service, the RU (Radio Unit) on the cell site side and the DU (Digital Unit) central station are connected by optical cable, which is called a radio access network or a CPRI (Common Public Radio Interface) front hall . In the future, in the case of the 5G wireless service, the functions of the existing RU and DU will be redefined and replaced with new names. In the present invention, the terms AU (Access Unit) and CU (Cloud Unit) are used. As shown in FIG. 1, the access network of 5G means a front hole between an AU at a cell site and a CU at a local area, and is connected through an optical cable as in the case of 4G.

There is a possibility that one or more additional optical cable connection (or multiple optical wavelength band allocation) between AU-CUs may be needed to satisfy the high demand transmission rate of 5G wireless service, and in order to overcome the coverage problem due to the use of millimeter wave, (Small) base station installation compared to Long Term Evolution. Therefore, if the conventional construction method as shown in FIG. 1 is applied as it is, there is a problem that large-scale investment of the optical cable for new 5G construction is inevitable, resulting in difficulty in early construction and high cost.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a system and method for sharing a single optical cable using an unified access unit (UAU) Wired integrated 5G access network system and method that can integrate services and efficiently provide desired services in desired places.

In order to achieve the above object, according to one aspect of the present invention, there is provided an access network system comprising: a plurality of local equipment; A plurality of local integrated access devices; And a plurality of subscriber side integrated accesses connected in a cascade manner such that respective services are branched at respective branch points between a plurality of subscriber side equipment corresponding to the plurality of local equipment and services and the other end side of the one shared integrated channel Device.

A plurality of wired services are integrated using one optical cable on the shared common channel, and signals obtained by combining wired and wireless services are transmitted and received for service.

The plurality of local equipments and the plurality of subscriber equipments include mutually corresponding equipments for one or more wired services and may include mutually corresponding equipments for one or more wireless services.

The downlink or uplink signals of different wavelength bands for each service may be combined or diverged and transmitted and received by the plurality of local integrated access devices and the plurality of subscriber integrated access devices.

Wherein each of the plurality of local integrated access devices and the plurality of subscriber-side integrated access devices comprises: a filter for filtering only optical signals of the corresponding service; An input / output port connected to the service equipment and forming a path so that signals of the corresponding service wavelength band are input or output; A common port that forms a path for entering or leaving signals of all wavelength bands passing through the integrated access device; And an expansion port for adding a path such that signals of the remaining bands from other integrated access devices except for the wavelength band of the corresponding service in all wavelength bands passing through the integrated access device enter or exit.

Wherein the plurality of local integrated access devices connect the common port of a local integrated access device for another service through the expansion port of a local integrated access device that is already operating to receive the additional service, The device may receive the additional service by connecting the common port of the subscriber integrated access device for the other service via the expansion port of the already operated subscriber side integrated access device.

The method comprising the steps of: if there is already an active service using a first RN supporting multiple connections of the subscriber's service equipment, then the remaining power budget of the already- , It is possible to provide a subscriber-side integrated access device for the additional target new service at the rear end of the first RN or at the rear end of the second RN connected to the first RN.

The power budget of the additional target new service with respect to the latter stage of the first RN is larger than the link budget of the already-operated service with respect to the previous stage of the first RN, If it is small, the subscriber-side integrated access device for the additional target new service can be installed at the front end of the first RN.

If the power budget of the additional target new service for the subsequent stage of the first RN is equal to or greater than the corresponding link budget, the power budget of the additional target new service at the latter stage of the second RN is compared with the corresponding link budget, Side integrated access device for the additional target new service at any one of a front end position, a front end position, and a rear end position of the additional target new service, A subscriber-side integrated access device can be installed.

According to another aspect of the present invention, there is provided a method of operating an access network system, the method comprising: installing a plurality of local integrated access devices integrated in a plug-in manner between one end of one integrated equipment and a plurality of local equipment; A plurality of subscriber-side integrated access devices connected in a cascade manner such that respective services are branched at respective branch points between a plurality of subscriber equipment corresponding to the plurality of local equipment and services and the other end of the one shared integrated channel; ; And transmitting and receiving signals by combining a plurality of services using one optical cable on the shared common channel, between the plurality of local integrated access devices and the plurality of subscriber-side integrated access devices.

According to the wired / wireless integrated 5G access network system and method according to the present invention, it is possible to integrate a wired / wireless access network such as 5G, FTTH, and leased line by sharing one optical cable, This is possible. In addition, it is possible to minimize the initial investment cost of establishing a wired / wireless integrated access network through service expansion based on the UAU device, and it is possible to branch the subscriber side at a desired location for each service.

1 is a view for explaining a general wired and wireless access network structure.
2 is a view for explaining a wired / wireless integrated access network system 100 according to an embodiment of the present invention.
FIG. 3 is a specific connection diagram of UAUs on a local side and a subscriber side according to an embodiment of the present invention.
4 is an example of a light wavelength band used for each wired / wireless service.
5A is a flowchart illustrating a connection procedure of an additional service through a UAU according to an exemplary embodiment of the present invention.
5B is a flowchart illustrating a connection procedure of an additional service through a UAU according to an embodiment of the present invention at a subscriber side.
6 is a flowchart illustrating a procedure for determining a UAU installation location on a subscriber side in order to share one optical cable on an integrated channel in an additional service according to an exemplary embodiment of the present invention.
FIG. 7 is a reference diagram for explaining the UAU installation position determination process of FIG. 6. FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols as possible. In addition, detailed descriptions of known functions and / or configurations are omitted. The following description will focus on the parts necessary for understanding the operation according to various embodiments, and a description of elements that may obscure the gist of the description will be omitted. Also, some of the elements of the drawings may be exaggerated, omitted, or schematically illustrated. The size of each component does not entirely reflect the actual size, and therefore the contents described herein are not limited by the relative sizes or spacings of the components drawn in the respective drawings.

2 is a view for explaining a wired / wireless integrated access network system 100 according to an embodiment of the present invention.

The wired / wireless integrated access network system 100 according to an exemplary embodiment of the present invention is preferably implemented by integrating 5G (5Generation) wireless services to be established in the future. However, the present invention is not limited thereto, It can be applied to wireless services in a similar way.

2, a wired / wireless integrated access network system 100 according to an embodiment of the present invention uses a Unified Access Unit (UAU) 111 and 121 to provide a wired / A fronthaul for a line, a fiber-to-the-home (FTTH) line and a wireless service (eg, a CU (Cloud Unit) ) Are shared through a single integrated cable optical cable, and the network structure in which wired and wireless services are integrated and serviced by one integrated cable optical cable is provided. As described above, the RN (Remote Node) on the subscriber side for each service such as Fiber-To-The-Home (FTTH) can provide a multiple access function to a plurality of subscribers in the same area through a branch.

For this, the wired / wireless integrated access network system 100 according to an embodiment of the present invention includes a UAU rack 110 on a station side and a UAU cascade 120 on a subscriber side connected by an integrated pipeline optical cable, .

The UAU 110 includes a plurality of UAUs 111 connected to a plurality of local equipment and each of the UAUs 111 connected to the local equipment optical module (or optical modem) of each service (dedicated line, FTTH, The UAU 111 can be simply and integrally connected in a plug-in manner and connected to one end of the integrated pipeline.

The UAU cascade 120 connected to the other end of the integrated channel at the subscriber side includes UAUs 121 for connecting a plurality of local equipments and a plurality of subscriber equipments corresponding to each service at respective branch points. That is, the UAU cascade 120 is branched for each service through each UAU 121 at each branch point, and is connected to each corresponding connection device, that is, a dedicated line device (e.g., router, link device, , And a base station device for wireless service (e.g., 5G AU, etc.). That is, the signals transmitted through the respective UAUs 111 for each service are combined into one integrated optical cable for each service, and are transmitted through the integrated channel. On the subscriber side, the signals received through the integrated channel are transmitted to the respective UAUs 121 The signal of each corresponding service is separated and transmitted to the corresponding access device.

₂ , a signal is transmitted using different wavelength bands (λ ₁ , λ ₂ , λ ₃ ) (see FIG. 4) for services of a leased line, FTTH, and radio The signals (? ₁ +? ₂ +? ₃ ) in which the service-specific signals having passed through the UAU 111 of the UAU 111 are transmitted through the integrated channel (received for each wavelength band upon receiving the uplink signal). In addition, on the subscriber side, necessary services can be provided through the respective UAUs 121 manufactured at the desired branching points, and only the wavelength band signals corresponding to the respective services are received (upgraded) by the UAU internal filter So that the signals of the respective wavelength bands are transmitted by being combined when the link signal is transmitted). In the example of FIG. 2, the FTTH service is firstly branched to serve the subscriber's home through the RN, followed by radio (eg, 5G), and then the leased line is sequentially branched.

In the example of FIG. 2, a wireless (e.g., 5G) access network is shown to share existing FTTH lines through UAUs 111 and 121 without the use and extension of additional optical cables, , 5G) Early establishment of access network and investment cost can be reduced. Conversely, when a wireless (e.g., 5G) access network is first established, the FTTH and leased lines may be shared through the UAUs 111 and 121 to provide a combined service . The same principle applies to the transmission and reception of the downlink signal and the transmission and reception of the uplink signal, which are opposite to each other.

In case of using a conventional commercial optical MUX / DeMUX (multiplexer / demultiplexer) to construct such a wired / wireless integrated access network, the initial investment cost is increased because the port for all wavelength bands must be supported in advance. At this time, since there is a restriction that all the services should be branched at the same location on the subscriber side, there is a disadvantage in that waste of the incoming optical fiber and flexibility in the construction are inferior.

On the other hand, in the present invention, the UAUs 111 and 121 are manufactured in the form of a module, and can be easily extended and added when the demand for the additional service is required. Therefore, according to the network structure, It is possible to integrate and provide wired / wireless services through a single integrated channel.

FIG. 3 is a specific connection diagram of UAUs on a local side and a subscriber side according to an embodiment of the present invention.

3, each UAU 111 of the UAU link 110 includes one or more optical wavelength filters 11 and three ports (input / output port 12, common port 13, and extended (EXP) port 14) And each UAU 121 of the UAU cascade 120 has at least one optical wavelength filter 21 and three ports (input and output port 22, common port 23, and EXP (Exp) port 24) .

Each of the filters 11/21 provided in the UAU 111/121 passes only the optical signal of the corresponding service. 4 is an example of a light wavelength band used for each wired / wireless service. Each of the filters 11/21 provided in the UAU 111/121 filters to pass only the optical signal of the corresponding service so as not to overlap with the filtering wavelength band in the UAU internal filter for other services. However, one UAU 111/121 may have internal filters that can be filtered to pass two or more different wavelength bands of light (e.g., λ ₁ , λ ₄ ).

Each of the input / output ports 12/22 provided in the UAU 111/121 is a port connected to an optical module of an equipment for each service on a station side or a subscriber side by an optical cable, and a signal of a corresponding service wavelength band enters or exits And a port that forms a path to the destination. Each common port (13/23) provided in the UAU (111/121) is a port for forming a path such that signals of all wavelength bands passing through the UAU enter or exit. Each EXP (Exp) port 14/24 of the UAU 111/121 is connected to the input / output port 12/22 through a common (com) port 13/23 of the corresponding UAU, Is a port that forms a path for entering or leaving signals of the remaining wavelength bands except for the wavelength band outgoing or coming through the optical fiber. In other words, the EXP (Exp) port 14/24 is a port for adding a path so that signals of the remaining bands from other UAUs except for the wavelength band of the corresponding service in all wavelength bands passing through the corresponding UAU enter or exit .

That is, a plurality of UAUs are connected to perform an existing optical MUX / DeMUX, and the UAU as shown in FIGS. 2 and 3 is a minimum necessary component in the network structure of the present invention, .

For example, each input / output port 12 provided in the UAU 111 is connected to the optical module of the equipment for each service on the local side by an optical cable in the UAU relay 110 of the national office, A path can be formed so that a signal is received. Each EXP (Exp) port 14 provided in the UAU 111 is connected to a common port 13 of another service or an additional service through an optical cable and receives signals of the other / additional service wavelength band A path can be formed. The common port 13 connected to the integrated pipeline optical cable is connected to the other one or more service signals? ₂ ,? ₃ ,? ₅ received through the expansion (EXP) port 14 and the input / (Λ ₁ + λ ₂ + λ ₃ + λ ₄ + λ ₅ ) in which the service-specific signals are combined is transmitted through the integrated channel by adding one or more service signals (λ ₁ , λ ₄ ) do.

In the UAU cascade 120 on the subscriber side, for example, a common port 23 connected to the integrated pipeline optical cable has a signal (? ₁ +? ₂ +? ₃ +? ₄ +? ₅ And transmits signals of all wavelength bands passing through the UAU to the EXP (EXP) port 24 and the filter 21. Signals (for example,? ₁ and? ₄ ) of the corresponding wavelength band passing through the filter 21 are outputted through the input / output port 12 and connected to the optical module of the subscriber service equipment through an optical cable. The signal from the EXP (Exp) port 24 is transmitted to the UAU for other services through the optical cable, and is connected to the equipment of the corresponding service through the I / O port 12 in the UAU for the other service, The combined signal (λ ₁ + λ ₂ + λ ₃ + λ ₄ + λ ₅ ) is transferred to the other UAU.

5A is a flowchart illustrating a connection procedure of an additional service through a UAU according to an exemplary embodiment of the present invention.

First, the UAU 111 corresponding to a service (e.g., FTTH) already operating in the local UAU relay 110 is implemented (S11). Next, an optical cable (integrated pipeline) installed in the common port 13 of the UAU 111 is connected (S12). If the optical cable is already connected to the optical equipment of the local equipment and the existing service is operated, the optical module is disconnected from the optical module and connected to the common port (13) of the UAU 111. Next, the input / output port of the local equipment optical module is connected to the input / output port 12 of the UAU 111 (S13).

In the case of adding a service, another UAU corresponding to a service to be added (e.g., a leased line, radio 5G, etc.) is additionally implemented in the UAU relay 110 (S14). Then, the common (com) port 13 of the added UAU is connected to the EXP (Exp) port 14 of the UAU 111 of the existing service and received (S15). The input / output port 12 of the added UAU is connected to the optical module input / output port of the local supplementary service equipment (e.g., leased line equipment, wireless (5G) CU, etc.) (S16).

If there is a further service to be added, the process of S14, S15, and S16 is repeated for another UAU for the service to be added, and the UAU of the finally added service is connected to the UAU. One optical cable can be shared and serviced.

5B is a flowchart illustrating a connection procedure of an additional service through a UAU according to an embodiment of the present invention at a subscriber side.

First of all, it is assumed that the existing service is already installed in a predetermined enclosure (eg, a manhole connection box, a pole / building wall light box, an indoor light distribution box, etc.) or an external enclosure at a service branch point where an optical cable And implements the UAU 121 corresponding to the service (e.g., FTTH) (S17). The existing optical cable at the service branching point is intermittently switched and the terminal end of the optical cable and the terminal end of the optical cable are respectively formed (S18). When the cluster is formed, the termination end of the optical cable formed is connected to the common port 23 of the existing service UAU 121 (S19). In addition, the subscriber side end of the formed optical cable is connected to the input / output port 22 of the existing service UAU 121 (S20).

In the case of adding a service, another UAU corresponding to a service to be added (for example, a leased line, a wireless (5G), etc.) is additionally implemented in a subscriber side enclosure such as another branch point, (COM) port 23 to the expansion (EXP) port 24 of the UAU 121 of the existing service (S21). The input / output port 22 of the added UAU is connected to the optical module input / output port of the subscriber side additional service equipment (e.g., leased line equipment, wireless (5G) AU, etc.) (S22).

If there is a further service to be added, the process of S21 and S22 is repeated for another UAU for the service to be added, so that all the services are connected to the UAU of the finally added service, The optical cable can be shared and serviced.

6 is a flowchart illustrating a procedure for determining a UAU installation location on a subscriber side in order to share one optical cable on an integrated channel in an additional service according to an exemplary embodiment of the present invention. FIG. 7 is a reference diagram for explaining the UAU installation position determination process of FIG. 6. FIG.

Hereinafter, a case will be described in which a subscriber uses an integrated optical fiber cable or UAU 121 to provide an FTTH line and a plurality of subscribers to be connected to multiple subscribers through an RN (Remote Node), but the present invention is not limited thereto , A service for another leased line or a wireless (e.g., 5G) service, or another service, may be similarly applied.

7, the UAU 701 connected to the OLT (Optical Line Terminal) of the existing FTTH service is connected to the optical cable 50 and the sequential connection of the first RN 702 and the second RN 703 is performed at the subscriber side It is assumed that the FTTH service is already operated by making multiple connections with the subscriber side service equipment such as an ONT (Optical Network Termination) device at each branching point.

At this time, a wireless (e.g., 5G) service is added while sharing the integrated pipeline optical cable 50, and the UAU installation position on the subscriber side is the same as that of the first RN 702 (Case 1 in the subscriber side end of the optical cable 50) (Or the front end of the second RN 703) (Case 2) of the first RN 702 or the rear end of the second RN 703 (Case). The UAU installation location for the wireless (e.g., 5G) service is flexibly determined and installed according to the conditions of the entire integrated network as described below, thereby improving the network efficiency and performance.

First, in order to determine whether it is appropriate to install a UAU 711 in front of the first RN 702 to add a wireless (e.g., 5G) service, the link budget of the FTTH service for the front end of the first RN 702 (L_ftth) (S51). That is, in consideration of the distance of the optical cable from the UAU 711 to the equipment, the transmission method, and the type of the service, the transmission / reception signal can be maintained at a predetermined stable quality (sensitivity, gain, noise figure, The demand can be calculated as a link budget.

At this time, if the remaining power budget P_ftth of the FTTH service with respect to the previous stage of the first RN 702 is smaller than the link budget L_ftth (S52), an empty port at the rear end of the first RN 702 (E.g., 5G) to the empty port at the rear end of the second RN 703 (Case 5), and the UAU 712 for the service (e.g., 5G) The UAU 713 for the service can be installed (Case 3) (S54).

When the power budget P_ftth is equal to or greater than the link budget L_ftth in step S52, the UAU 712 is provided at the rear end of the first RN 702, (L_new) of the new service (e.g., 5G) added to the end of the first RN 702 to determine whether it is appropriate to add the new service (e.g., 5G). At this time, if the power budget (P_new) of the new service with respect to the rear end of the first RN 702 is smaller than the link budget L_new (S56), the UAU 711 is installed in front of the first RN 702 (S57) .

In S56, if the power budget P_new is equal to or larger than the link budget L_new, the link budget L_new of the new service (e.g., 5G) added to the rear end of the second RN 703 is calculated (S58). At this time, if the power budget (P_new) of the new service with respect to the latter stage of the second RN 703 is smaller than the link budget L_new (S59), the UAU 711 ) Or a UAU 712 (S60). If the power budget (P_new) of the new service with respect to the latter stage of the second RN 703 is equal to or greater than the link budget L_new (S59) The UAU 711, the UAU 712, or the UAU 713 (S60).

As described above, according to the wired / wireless integrated 5G access network system 100 according to the present invention, it is possible to integrate wired and wireless access networks such as wireless (e.g., 5G), FTTH, and leased lines by sharing one optical cable, It is possible to construct 5G access network early without installing new optical cable. In addition, it is possible to minimize the initial investment cost of establishing a wired / wireless integrated access network through service expansion based on the UAU device, and it is possible to branch the subscriber side at a desired location for each service.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the essential characteristics of the invention. Therefore, the spirit of the present invention should not be construed as being limited to the embodiments described, and all technical ideas which are equivalent to or equivalent to the claims of the present invention are included in the scope of the present invention .

UAU Rack (110)
The filter (11)
The input /
A common port 13,
Expansion (EXP) port (14)
UAU Cascade (120)
The filter (21)
The input /
A common port 23,
Expansion (EXP) port (24)

Claims (13)

A plurality of local integrated access devices integrally connected in a plug-in manner between a plurality of local equipment and one end of one shared integrated channel; And
A plurality of subscriber-side integrated access devices connected in a cascade manner such that respective services are branched at respective branch points between a plurality of subscriber equipment corresponding to the plurality of local equipment and services and the other end of the one shared integrated channel;
The access network system comprising: The method according to claim 1,
Wherein a plurality of wired services are integrated using one optical cable on the shared common channel, and signals obtained by combining wired and wireless services are transmitted and received. The method according to claim 1,
Wherein the plurality of local equipment and the plurality of subscriber equipment comprise corresponding equipment for one or more wired services and corresponding equipment for one or more wireless services. The method according to claim 1,
Wherein the downlink or uplink signals of different wavelength bands for each service are combined or diverged and transmitted and received by the plurality of local integrated access devices and the plurality of subscriber integrated access devices. The method according to claim 1,
Wherein each of the plurality of local integrated access devices and each of the plurality of subscriber-
A filter for filtering only the optical signal of the corresponding service;
An input / output port connected to the service equipment and forming a path so that signals of the corresponding service wavelength band are input or output;
A common port that forms a path for entering or leaving signals of all wavelength bands passing through the integrated access device; And
An expansion port for adding a path so that a signal of the remaining band from other integrated access devices except the wavelength band of the corresponding service enters or leaves in all wavelength bands passing through the integrated access device
The access network system comprising: 6. The method of claim 5,
Wherein the plurality of local integrated access devices connect the common port of a local integrated access device for another service through the expansion port of an already operated local integrated access device to receive the additional service,
Characterized in that the plurality of subscriber side integrated access devices connect the common port of the subscriber side integrated access device for the other service via the expansion port of the already operated subscriber side integrated access device to receive the additional service Access network systems. The method according to claim 1,
If there is already a service running using the first RN supporting multiple connections of the subscriber's service equipment,
If the remaining power budget of the already-running service is smaller than the link budget of the already-active service for the previous stage of the first RN, Side integrated access device for the service. 8. The method of claim 7,
If the remaining power budget of the already-running service is greater than or equal to the link budget of the already-active service for the front end of the first RN,
Side integrated access device for the additional target new service is provided in front of the first RN if the power budget of the additional target new service with respect to the succeeding stage of the first RN is smaller than the link budget, . 9. The method of claim 8,
If the power budget of the additional target new service with respect to the succeeding stage of the first RN is equal to or greater than the corresponding link budget, the power budget of the additional target new service at the latter stage of the second RN is compared with the corresponding link budget,
A subscriber integrated access device for the additional target new service may be installed at a position of a front end or a rear end of the first RN according to a result of the comparison, And the subscriber-side integrated access device for the additional target new service is installed as described above. Installing a plurality of local integrated access devices integrally connected in a plug-in manner between a plurality of local equipment and one end of one shared integrated channel;
A plurality of subscriber-side integrated access devices connected in a cascade manner such that respective services are branched at respective branch points between a plurality of subscriber equipment corresponding to the plurality of local equipment and services and the other end of the one shared integrated channel; ; And
Transmitting and receiving signals by combining a plurality of services using the one shared integrated channel between the plurality of local integrated access devices and the plurality of subscriber-side integrated access devices
The method comprising the steps of: 11. The method of claim 10,
Wherein a plurality of wired services are integrated or signals combining wired and wireless services are transmitted and received by using one optical cable on the shared common channel. 11. The method of claim 10,
Wherein the plurality of local equipment and the plurality of subscriber equipment comprise corresponding equipment for one or more wired services and corresponding equipment for one or more wireless services. Way. 11. The method of claim 10,
Wherein the downlink or uplink signals of different wavelength bands for each service are combined or diverged and transmitted and received by the plurality of local integrated access devices and the plurality of subscriber integrated access devices.

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