JP4235166B2 - In-building mobile communication relay system - Google Patents

Description

  The present invention relates to an in-building mobile communication relay system, and more particularly to an in-building mobile communication relay system in which a relay wireless slave unit for mobile communication is provided on each floor of a building of a plurality of floors.

  In recent years, mobile communication has been used by using a mobile phone or a PDA (Personal Digital Assistant) having a wireless communication function or a portable computer having a wireless communication function. In addition to increasing the number of ground base stations to expand the range in which mobile communication is possible, relay stations that can perform wireless communication are provided by using hot spots at places and stores such as stations and large buildings. Is done. For example, Patent Document 1 discloses, as a business method using a hot spot, reducing the time from when a customer enters the hot spot until the customer can connect to the Internet and the time required for payment processing. Is done.

  Therefore, it has been desired to provide facilities capable of mobile communication even in buildings that have already been constructed, for example, large buildings with many offices and stores, or high-rise buildings. In this case, in order to provide a mobile communication repeater on each floor, it is necessary to pass a communication line in the vertical direction of the building. Usually, buildings with multiple floors are equipped with EPS (Electric Pipe Space) penetrating each floor for electrical wiring, etc., so if there is room in the EPS space, use it and use it from the communication base station. A dedicated communication line can be drawn into the building and distributed to the branch lines for each floor of the building, so that the vertical direction of the building can be laid in the EPS.

  When the capacity of the dedicated communication line is too large to fit in the EPS space, it is not possible to provide enough relay slave units using the wired branch line, and the communication sensitivity of the mobile communication terminal is limited, Or there may be a floor where no mobile communication is possible. In order to avoid this, a construction for providing a through hole in the floor of each floor of the building is performed. This construction needs to avoid various wiring and various pipes already laid on the floor of each floor, so we conduct a preliminary survey etc. and consider the operation of the building, so that each floor branch line laid in this way A relay wireless slave for mobile communication can be provided first to enable communication of mobile communication on each floor.

Japanese Patent Laid-Open No. 2002-315058

  By the way, an elevator is usually provided in a building of a plurality of floors, particularly a building of middle or higher. Since this elevator hoistway is a space that penetrates the building in the vertical direction, it is surrounded by a fire wall in consideration of fire and the like. Conventionally, laws and regulations have been performed so that only wiring and piping related to an elevator can be laid. However, except for legal and regulatory issues, this hoistway is surrounded by fire walls and is a highly safe area for disaster prevention and crime prevention. It is convenient to install vertically.

  An object of the present invention is to provide a mobile communication relay system in a building having a plurality of floors by a new method, paying attention to the characteristics of the elevator hoistway.

The in-building mobile communication relay system according to the present invention includes a dedicated lead-in line for an optical cable drawn into a building from a mobile communication base station, and an in-building converter that distributes the dedicated lead-in line to branch lines for each floor of the building, A vertical branch line for each floor of an optical cable that is laid in an elevator hoistway, which is a space that runs vertically through the building and surrounded by a fire wall, extends from the in-building converter, and is divided for each floor at each floor, and the building Are installed on the inside of the hoistway, which is a space that runs vertically through the wall and surrounded by a fire wall, corresponding to each floor, and the input terminals are connected to the vertical branch lines divided for each floor, and optical signals and electrical signals a relay radio personal machines for each floor to convert between, via a radio antenna for each floor provided at the hall operating panel of each floor of the elevator hall, the fire holes provided on the fire wall, the relay radio personal machine output terminal and the wireless a of And each floor lead line for connecting the antenna, characterized in that it comprises a.

The relay antenna is preferably a bar antenna or a loop antenna provided on each floor hall operation panel.

Further, in building a mobile communication relay system according to the present invention, the ulcer vertical branch is a branch group is a branch of the assembly for each floor, divided by sequentially branch to branch for each floor at each floor It is preferable.

Moreover, it is preferable that a relay radio | wireless subunit | mobile_unit is a media converter which performs conversion between an optical interruption signal and an electric interruption signal.

  With the above configuration, after the dedicated service lines drawn into the building from the mobile communication base station are distributed to the branch lines for each floor, the branch lines for each floor are laid vertically in the elevator hoistway and are used as relay radio elements for each floor. The antenna is placed at the relay place on each floor of the building from the relay wireless slave unit through the fire hole of the hoistway. Therefore, mobile communication can be relayed in a building having a plurality of floors by a new method without particularly requiring new work for vertically laying communication lines.

  Further, since the relay antenna is provided on each floor hall operation panel, the mobile communication can be relayed without the antenna being conspicuous.

  In addition, since the dedicated service line and the vertical branch line for each floor are optical cables, it is possible to relay high-speed and high-capacity mobile communication.

  Further, since the relay wireless slave is a media converter that performs conversion between an optical signal and a wireless signal, high-speed and high-capacity communication transmission can be performed up to the relay wireless slave at the relay location.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, a dedicated line is drawn from the mobile communication base station to the building with an optical cable, and the branch line to the relay wireless slave unit on each floor is also used with an optical cable. A telecommunication line may be used. In addition, it is assumed that a dedicated line from a mobile communication base station is drawn into the building through the basement and close to the pit of the elevator hoistway. Also good. For example, if an elevator machine room is provided on the top floor of a building and it is appropriate to introduce a dedicated line to the building in the vicinity of it, a dedicated line is introduced into the building from the top floor of the building. I can do it. In the following description, the building is described as having one elevator hoistway, but there may be a plurality of hoistways, and the branch line distribution to each floor is described as being performed in one place. Depending on the structure of the building, distributors may be provided at a plurality of locations where branch lines can be easily distributed.

  Also, in the following, it is assumed that the building has already been constructed and no communication line for mobile communication has been laid in the building, and a mobile communication relay wireless slave unit will be newly installed on each floor. It is assumed that the renewal is performed, but, of course, the in-building mobile communication relay system according to this embodiment can be provided from the beginning in a newly constructed building.

  FIG. 1 is a diagram showing a configuration around a building 12 and a mobile communication base station 10 to which the in-building mobile communication relay system 20 is applied. The building 12 has a plurality of floors, for example, eight floors, has already been constructed, and is an existing building in which a communication line for mobile communication has not been laid in the building. The communication relay system 20 is applied and a renewal is performed to install a mobile communication relay wireless slave unit on each floor, and the structure shown in FIG. 1 is obtained. In this building 12, a hoistway 18 for an elevator 16 that can be raised and lowered on each floor 14 is provided penetrating in the vertical direction of the building 12.

  The in-building mobile communication relay system 20 includes a dedicated service line 22 drawn into the building 12 from the mobile communication base station 10 and an in-building converter 24 that distributes the dedicated service line 22 to branch lines 26 for each floor of the building. And each branch line 30 vertically laid in the hoistway 18 of the elevator 16 from the in-building converter 24 toward each floor 14, and a relay wireless slave device and an antenna at the end of each branch line 30. FIG. 1 shows a state in which the user 42 on each floor 14 and the mobile communication terminal 44 communicate with each other via the antenna at the end of each branch line 30.

  The dedicated lead-in line 22 is an optical cable laid exclusively for each building from the mobile communication base station 10. The dedicated lead-in line 22 is arranged in the underground optical cable laying pipe from the mobile communication base station 10 and is connected to the in-building converter 24 provided in the underground portion of the building 12. The dedicated lead-in wire 22 can be configured by covering the optical fiber having the number of core wires suitable for the required communication capacity based on the number of floors of the building 12 and the expected frequency of mobile communication with a covering material.

  The in-building converter 24 is a device having a function of converting the dedicated service line 22 into the communication wiring in the building, and controls various communication devices connected to the building wiring. In the case of FIG. The communication capacity of the service line 22 is distributed to the branch lines 30 for each floor of the building. For example, when it is assumed that the required capacity of mobile communication on each floor is equal, branch cables having the same communication capacity are used on each floor. The communication capacity of the line 22 is distributed. In this case, it is preferable that each branch line 30 is composed of one each. By doing in this way, the structure of each branch line 30 can be made the same irrespective of the structure of a building, and the branch line group 26 which is a group of each branch line 30 can be manufactured and prepared beforehand in a factory. Of course, other distribution methods may be used as long as the total communication capacity of each branch line 30 does not exceed the communication capacity of the dedicated service line 22. For example, in consideration of a future extension branch line, half of the communication capacity of the dedicated service line 22 may be evenly distributed to each branch line 30. When the mobile communication required capacity on each floor is different, the distribution ratio corresponding to that Thus, the communication capacity of the dedicated service line 22 may be distributed.

  The in-building converter 24 is preferably provided in the vicinity of what is called the pit at the bottom of the hoistway 18 in the underground part of the building. An elevator motor, an elevator control panel, and the like are arranged in the pit of the elevator 16, and a room space called an MDF (Main Distribution Frame) corner for arranging electric wiring and the like toward the pit is usually near the pit. A fire hole that penetrates the fire wall of the hoistway 18 from the MDF corner to the pit is provided for passing electrical wiring and the like. Therefore, the in-building converter 24 is preferably provided in the MDF corner. By doing in this way, the converter 24 in a building can be installed using the existing building space and a fire prevention hole, and the branch line 30 for each floor can be introduce | transduced in the hoistway 18 through a fire prevention hole.

  The in-building converter 24 is configured by a device called an optical hub, for example, a device using a PON (Passive Optical Network) technology that shares a certain communication capacity, or an optical band control technology that sets and distributes a communication capacity. I can do it.

  The branch line group 26 is a set of branch lines 30 on each floor. In the above example, the branch line group 26 is a set of eight floor branch lines 30. In the branch line group 26, each of the eight series of branch lines 30 is protected by one coating at the exit of the in-building converter 24, and the hoistway 18 of the elevator 16 is laid upward from the lowest part. Then, the branch line 30 for the first floor is branched when it is extended to the first floor, and then the branch line 30 for the second floor is further branched when it is extended to the second floor, and this is repeated eight times on the top floor. Then, only the branch line 30 for the eighth floor is extended. Each branch line 30 has the same configuration as that of the dedicated lead-in line 22 and can have a small communication capacity.

  FIG. 2 is a detailed enlarged view of the front portion 40 of each branch line 30 in FIG. 1, FIG. 2 (a) is a side sectional view in the vicinity of the elevator hall, and FIG. 2 (b) is a plan sectional view thereof. This portion 40 is a portion in the vicinity of the elevator hall 50 on each floor 14. The elevator hall 50 is provided with a hall opening that breaks the fire wall 52 so that the elevator 16 can get on and off when the elevator 17 stops, and an opening / closing door 54 is provided at that portion. In addition to being provided on the elevator hall 50 side, the opening / closing door 54 may be further provided on the side of the elevator 17 of the elevator 16. A landing operation panel 56 for calling the elevator 16 to the floor or the like is attached to the surface of the fire prevention wall 52 around the opening / closing door 54 on the elevator landing 50 side.

  The fire barrier 52 on the back side of the hall operation panel 56 is provided with a fire hole 58 for passing a signal line between the hall operation panel 56 and an elevator control panel (not shown). Since the fire prevention hole 58 is an opening of the fire prevention wall 52, the fire prevention hole 58 has a structure that prevents the fire from spreading therethrough. FIG. 3 shows a structure around the fire prevention hole 58. An adapter 70 made of a flame retardant material is fitted into the fire prevention hole 58 from both sides. The adapter 70 is a bushed bush provided with a thin through hole for allowing the signal line 72 to pass through. The thin through hole is filled with a flame retardant thermally expandable resin material 74 after passing through the signal line 72. It is done. The heat-expandable resin material 74 expands when heated, and when heated by a fire or the like, the heat-expandable resin material 74 expands and closes the gap between the through holes, thereby preventing the spread of the fire. The thermal expansion resin may be packed in a gap other than the narrow through-hole portion as necessary.

  Returning to FIG. 2 again, the route from the branch line 30 for each floor to the landing operation panel 56 will be described. The branch line 30 for each floor is appropriately stopped by a guide bar 19 or a guide wire disposed in the vertical direction in the hoistway 18 of the elevator 16 with an appropriate support material, and extends upward through the hoistway 18 as described above. Each of the floors is separated from the branch line group 26 one by one. At each floor, a relay wireless slave device 60 is attached to an appropriate place inside the hoistway 18, and each floor branch line 30 is connected to an input terminal of this relay wireless slave device 60. One end of each floor lead wire 62 that is an electrical signal line is connected to the output end of the relay wireless slave device 60, and the other end of each floor lead wire 62 passes through the fire prevention hole 58 and exits to the back side of the hall operation panel 56. Therefore, the antenna 64 is formed.

  The relay wireless slave device 60 is a device having a function of converting between an optical signal transmitted by each floor branch line 30 which is an optical cable and an electric signal transmitted by each floor lead line 62. Such a relay wireless slave device 60 can perform bidirectional conversion from an optical intermittent signal to an electrical intermittent signal and from an electrical intermittent signal to an optical intermittent signal, and uses what is commercially available as a so-called media converter. I can do it.

  The antenna 64 is a wireless antenna for wirelessly communicating with a wireless portable device in the area using the elevator hall 50 on each floor as a relay place. For example, a loop antenna having a conductor wire in a loop shape, a rod-like antenna, or the like is used. be able to. It is desirable that the arrangement of the antenna 64 be visually invisible from the operation surface side of the hall operation panel 56. In the case of a loop antenna, the loop antenna may be routed along the outer periphery of the hall operating panel 56. Alternatively, it may be embedded in the hall operation panel 56 in advance, its terminal is drawn out, and this is connected to the output terminal of the relay radio cordless handset 60 as one of the floor lead wires 62 described above.

  FIG. 4 shows an antenna concealed in a hall operation panel 56 by a mobile phone that is a mobile communication terminal 44 of a user 42 in the area where an elevator hall 50 near an elevator door 54 is provided as a relay place. It is a figure which shows a mode that it communicates with 64. FIG. As described above, the relay antenna 64 for mobile communication in the building is provided in the vicinity of the elevator hall 50, which is a region through which many people pass, so that the user can easily use the antenna 64 and the antenna 64 is hidden by the hall operation panel. By doing so, the beauty of the building will not be impaired.

  A method of installing the in-building mobile communication relay system 20 having such a structure will be described. In order to renew a new relay point for mobile communication on each floor in the existing building 12, the in-building converter 24 is first installed in the existing MDF corner. Then, each floor branch line group 26 manufactured in advance in the factory is brought into the elevator hoistway 18 of the building 12, and one end thereof, that is, the side where the branch lines 30 for each floor are not branched from the elevator hoistway 18 to the MDF corner. Connect to the output side of the in-building converter 24 in the MDF corner.

  Next, each floor branch line group 26 is laid vertically along the guide bar 19 while extending upward of the hoistway 18 using an appropriate support material. When extending to the vicinity of the first floor opening / closing door 54, the first floor relay radio cordless handset 60 is attached to the surrounding fire wall 52, and the first floor branch line 30 is connected to the input end thereof. The relay wireless slave device 60 may be previously attached to the branch line group 26 at the factory. In such a case, the branch line group 26 with the relay wireless slave device 60 may be installed vertically in the hoistway 18, and the relay wireless slave device 60 only needs to be attached at the relay wireless slave device attachment position on each floor. In this way, each floor branch line 30 is connected while the relay wireless slave device 60 for each floor is attached.

  On the other hand, at the elevator hall 50 on each floor, the hall operation panel 56 is temporarily removed, and one end side of each antenna 64 with a lead-out line is passed through the existing fire prevention hole 58. At this time, if the existing adapter cannot pass through the floor lead wires 62, a new suitable adapter 70 is used, and a thermal expansion resin material 74 is filled in a necessary portion for caulking. Thereafter, the hall operation panel 56 is attached again. In this way, in the elevator hall 50, the antenna 64 can be provided concealed in the hall operation panel 56 so that the appearance is completely the same as before.

  In this way, each floor lead line 62 is drawn into the hoistway 18, so that one end thereof is connected to the output end of the relay wireless slave device 60 for each floor. After that, a dedicated lead-in line 22 is laid from the mobile communication base station 10 outside the building toward the building 12 by underground piping, and is introduced into the building 12 from an appropriate introduction port already installed in the building 12, and the MDF corner Connect to the input side of the in-building converter 24. This completes a series of renewal works.

  In this way, since existing inlets, fire holes, MDF corners, hoistways, guide rails, landing control panels, etc. are used, new construction on the building 12 can be minimized, and the renewal work period can be shortened. And cost can be reduced. In addition, the communication line is sufficiently protected from the fire and crime prevention aspects of the hoistway. Furthermore, the maintenance around the communication line can also use a hoistway, and the workability is good.

  FIG. 5 is a diagram showing another configuration example of the in-building mobile communication relay system that uses the elevator hoistway 18. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In this in-building mobile communication relay system 80, the dedicated lead-in line 22 is drawn into the building 12 and connected to the in-building converter 24, and the tip leaks upward into the hoistway 18 of the elevator 16. A coaxial cable 82 is laid vertically.

  The in-building converter 24 has a function of converting the dedicated lead-in wire 22 to the in-building wiring as described above, but has a function of converting the dedicated lead-in wire 22 into the leaky coaxial cable 82 in the configuration of FIG.

  The leaky coaxial cable 82 is called LCX (Leakage Co-aXial cable), and is the opposite of the coaxial cable intended for electromagnetic shielding, and leaks radio waves by providing a slight slit (gap) in the coaxial cable shield. It is a cable that can be made to. Therefore, it is possible to communicate with an external mobile communication terminal via this slit, and it is used, for example, for communication with a wireless device in a moving vehicle.

  In the configuration of FIG. 5, since there are some gaps in the opening / closing doors 54 of the elevators 16 on each floor 14, the radio waves of the mobile communication terminals 44 on each floor enter the hoistway 18 through the gaps. This radio wave is received via the leaky coaxial cable 82 in the hoistway 18. Similarly, transmission through this gap is also possible. In this way, communication of the mobile communication terminals 44 on each floor can be relayed.

  By adopting such a configuration, instead of vertically connecting a branch line for each floor as in the configuration of FIG. 1, one leaky coaxial cable 82 is vertically wired in the hoistway 18 to reduce the cost. It is possible to obtain the effect. In particular, in the configuration of FIG. 5, the mobile communication device 44 can be used by the user 42 in the cage 17 of the elevator 16. Furthermore, if a vertical branch line similar to that in FIG. 1 is used for purposes other than for mobile communication relay, for example, to lay a LAN (Local Area Network) for fixed communication devices on each floor, this vertical branch line may be used. Therefore, the leaky coaxial cable 82 can be laid by the same vertical laying work, and LAN laying for fixed communication equipment and mobile communication relay laying can be conveniently done by the same work.

  FIG. 6 is a diagram showing still another configuration example of the in-building mobile communication relay system using the elevator hoistway 18. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In this in-building mobile communication relay system 90, the dedicated lead-in line 22 is drawn into the building 12 and connected to the in-building converter 24, and then the communication is performed upward in the hoistway 18 of the elevator 16. A line 92 is laid vertically. Then, the tip of the communication line 92 is connected to the centralized wireless slave device 94 provided in the upper part in the hoistway 18.

  The in-building converter 24 has a function of converting the dedicated service line 22 into the building wiring as described above. However, in the configuration of FIG. 6, the dedicated service line 22 is changed to the communication line 92 for the centralized radio slave unit 94 in the configuration of FIG. Has a function to convert. The communication line 94 may be an optical cable or an electric communication line. When the dedicated lead-in line 22 is an optical cable and the communication line 94 is an electric communication line, a media converter can be used for the in-building converter 24 as in the relay wireless slave unit 60 of FIG.

  The centralized wireless slave device 94 is a device having an antenna and a function capable of wireless communication with the mobile communication device 44. Therefore, when the communication line 92 is an optical cable, a media converter can be used for the in-building converter 24 like the relay wireless slave device 60 of FIG. The centralized wireless slave unit 94 may be provided at the uppermost part of the hoistway 18 or may be disposed at an appropriate height position in the hoistway 18 in consideration of the radio wave communication range. Further, a plurality of centralized wireless slave devices 94 may be arranged at different height positions in the hoistway 18 according to the level of the building 12.

  In the configuration of FIG. 6, as in the case of FIG. 5, there are some gaps in the opening / closing doors 54 of the elevators 16 on each floor 14, so that radio waves from the mobile communication terminals 44 on each floor pass through the gaps to the hoistway 18. enter. This radio wave is received via the antenna of the centralized radio slave unit 94 in the hoistway 18. Similarly, transmission through this gap is also possible. In this way, communication of the mobile communication terminals 44 on each floor can be relayed.

  By adopting such a configuration, a communication line 92 is vertically wired in the hoistway 18 and a centralized wireless slave device 94 is provided at the end of the hoistway 18 instead of vertically wiring a branch line for each floor as in the configuration of FIG. Thus, the same effect can be obtained by reducing the cost. Similarly to the configuration of FIG. 5, the mobile communication device 44 can be used by the user 42 in the cage 17 of the elevator 16.

  FIG. 7 is a diagram showing the in-building mobile communication relay system 100 which is the above-described modification. Here, the centralized wireless slave device 94 is provided in the lowermost layer of the hoistway 18. Even in this case, communication of the mobile communication terminals 44 on each floor can be relayed as in FIG.

It is a figure which shows the structure of the building and mobile communication base station periphery to which the in-building mobile communication relay system of embodiment which concerns on this invention is applied. It is a detailed enlarged view about the front part of each branch line in FIG. It is a figure which shows the structure around a fire prevention hole. In the building mobile communication relay system according to the embodiment of the present invention, FIG. It is a figure which shows the structure in other embodiment. It is a figure which shows the structure in other embodiment. It is a figure which shows the structure of the deformation | transformation embodiment of FIG.

Explanation of symbols

10 mobile communication base stations, 12 buildings, 14 floors, 16 elevators, 17 km, 18 hoistways, 19 guide bars, 20, 80, 90, 100 mobile communication relay systems in buildings, 22 dedicated service lines, 24 in buildings Converter, 26 branch line group, 30 branch line, 42 user, 44 mobile communication terminal, 50 elevator hall, 52 fire wall, 54 door, 56 hall operation panel, 58 fire hole, 60 relay radio cordless handset, 62 lead line, 64 antennas, 70 adapters, 72 signal lines, 74 thermally expandable resin material, 82 leaky coaxial cable, 92 communication lines, 94 centralized wireless slave units.
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Claims (4)

A dedicated lead-in line for an optical cable drawn from the mobile communication base station into the building,
An in-building converter that distributes dedicated service lines to branch lines for each floor of the building;
A vertical branch line for each floor of an optical cable that is laid in an elevator hoistway, which is a space that vertically passes through the building and is surrounded by a fire wall, extends from the in-building converter, and is divided for each floor at each floor ;
Each building is provided inside the hoistway, which is a space that runs vertically through the building and is surrounded by a fire wall, corresponding to each floor, and the input terminal is connected to a vertical branch line that is divided for each floor. a relay radio personal station for each floor for converting between,
A radio antenna for each floor provided at the hall operation panel of the elevator hall on each floor,
And each floor lead line that through the fire holes provided in the fire wall, and connect the output terminal and the radio antenna of the relay radio personal station,
A mobile communication relay system in a building, comprising: In the building mobile communication relay system according to claim 1,
The in-building mobile communication relay system, wherein the relay antenna is a rod antenna or a loop antenna provided on each floor hall operation panel. In the building mobile communication relay system according to claim 1 ,
Each Canker vertical branch is a branch group is a branch of the assembly for each floor, building a mobile communication relay system, characterized by being divided sequentially branch to branch for each floor at the floor. In the building mobile communication relay system according to claim 1,
The in-building mobile communication relay system, wherein the relay wireless slave device is a media converter that performs conversion between an optical interrupt signal and an electrical interrupt signal.

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