JP2008099133A - Indoor coverage structure - Google Patents

Indoor coverage structure Download PDF

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JP2008099133A
JP2008099133A JP2006280402A JP2006280402A JP2008099133A JP 2008099133 A JP2008099133 A JP 2008099133A JP 2006280402 A JP2006280402 A JP 2006280402A JP 2006280402 A JP2006280402 A JP 2006280402A JP 2008099133 A JP2008099133 A JP 2008099133A
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film
building
base station
cable
coupler
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JP4770690B2 (en
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Seiya Higuchi
盛也 樋口
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NEC Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide indoor coverage structure which can be easily installed and of which the transmission loss is reduced. <P>SOLUTION: The indoor coverage structure for forming a wireless coverage area at least in the first floor of a building has: wireless base station 14 installed on the outside of the building; film couplers 12a to 12f installed on the outer walls of floors forming the wireless coverage area of the building; film antennas 11a to 11f stuck to windowpanes 15 of the floors forming the wireless coverage area of the building and respectively connected to the film couplers 12a to 12f of the same floors; coaxial cables 13a, 13c, 13e, 13g, 13i, 13k for connecting the wireless base station 14 to respective film couplers 12a to 12f; and coaxial cables 13b, 13d, 13f, 13h, 13j, 13l for respectively connecting the film couplers 12a to 12f of respective floors to the film antennas 11a to 11f. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、建築物内部にカバレッジエリアを形成するための屋内カバレッジ構造に関し、特に、設置するために必要となる工数やスペースを削減した屋内カバレッジ構造に関する。   The present invention relates to an indoor coverage structure for forming a coverage area inside a building, and more particularly to an indoor coverage structure that reduces man-hours and space required for installation.

図２に、従来の屋内カバレッジ構造（建造物の内部にカバレッジエリアを形成するための構造）を示す。
図示するように、従来は、移動体通信システム（自動車電話や携帯電話など）の屋内カバレッジ構造は、各階層に通じているパイプスペースやケーブルラックを利用して、階層を跨いだ配線を行っていた。 FIG. 2 shows a conventional indoor coverage structure (a structure for forming a coverage area inside a building).
As shown in the figure, conventionally, the indoor coverage structure of a mobile communication system (such as a car phone or a mobile phone) uses a pipe space and a cable rack leading to each level to perform wiring across the levels. It was.

屋外のアンテナで受信した無線信号を信号線を介して屋内に引き込み、屋内で再送信する従来技術としては、特許文献１に開示される「ホームギャップフィラー用再送信アンテナ及び屋内用受信アンテナ」がある。
特開２００５−７２６４５号公報 As a conventional technique for drawing a radio signal received by an outdoor antenna indoors via a signal line and retransmitting it indoors, there is a “retransmission antenna for home gap filler and indoor reception antenna” disclosed in Patent Document 1. is there.
JP 2005-72645 A

従来のカバレッジ構造では、屋外アンテナからの各階層までの配線としては、低損失を目的とした大口径の同軸ケーブルを硬質材料で形成して敷設していたが、このような同軸ケーブルは工事性が高くない。例えば、ケーブル敷設時における工数は小口径の同軸ケーブルを敷設する場合と比較して増大するし、既設のパイプスペース、ケーブルラックに空きが十分に無い場合には、専用のケーブルルートを確保する必要が生じ、費用増加の原因となりうる。   In the conventional coverage structure, the wiring from the outdoor antenna to each level has been laid with a large diameter coaxial cable made of hard material for the purpose of low loss. Is not expensive. For example, the number of man-hours for laying cables increases compared to laying small-diameter coaxial cables, and it is necessary to secure a dedicated cable route when there is not enough space in the existing pipe space and cable rack. This can cause an increase in costs.

さらに、各階層の天井に屋内アンテナを設置して各階層をカバーするため、同軸ケーブル以外に階層ごとに屋内アンテナまで接続する追加の同軸ケーブルとカップラが必要である。このように建築物の横方向に関しては、数台のカップラが必要となるため、大口径で硬質材料の同軸ケーブルを用いることができず、伝送損失が大きくなってしまう。   Furthermore, since an indoor antenna is installed on the ceiling of each floor to cover each floor, an additional coaxial cable and coupler that connect to the indoor antenna for each floor are required in addition to the coaxial cable. As described above, since several couplers are required in the lateral direction of the building, a coaxial cable made of a hard material with a large diameter cannot be used, resulting in an increase in transmission loss.

本発明はかかる問題に鑑みてなされたものであり、設置が容易で伝送損失の小さい屋内カバレッジ構造を提供することを目的とする。   The present invention has been made in view of such a problem, and an object thereof is to provide an indoor coverage structure that is easy to install and has a small transmission loss.

本発明は、上記目的を達成するために、建造物の少なくとも１階層の内部に無線カバレッジエリアを形成するための屋内カバレッジ構造であって、建造物の外部に設置された無線基地局と、建造物の無線カバレッジエリアを形成する階層の外壁に設置されたフィルムカップラと、建造物の無線カバレッジエリアを形成する階層の窓ガラスに貼り付けられ、同じ階層のフィルムカップラと接続されたフィルムアンテナと、無線基地局と、各フィルムカップラとを接続する第１のケーブルと、各階層のフィルムカップラとフィルムアンテナとを接続する第２のケーブルとを有することを特徴とする屋内カバレッジ構造を提供するものである。   In order to achieve the above object, the present invention provides an indoor coverage structure for forming a radio coverage area inside at least one level of a building, a radio base station installed outside the building, A film coupler installed on the outer wall of the hierarchy forming the radio coverage area of the object, a film antenna attached to the window glass of the hierarchy forming the radio coverage area of the building, and connected to the film coupler of the same hierarchy; The present invention provides an indoor coverage structure comprising a radio base station, a first cable that connects each film coupler, and a second cable that connects a film coupler and film antenna of each layer. is there.

本発明においては、建造物の無線カバレッジエリアを形成する階層には、フィルムカップラとフィルムアンテナとが２対以上設置され、それぞれのフィルムカップラが、それぞれ個別の第１のケーブルを介して無線基地局と接続されることが好ましい。また、各フィルムアンテナが、数珠繋ぎで無線基地局と接続されることが好ましく、これに加えて、末端に位置するフィルムカップラに、同じ階層のフィルムアンテナとは別に、異なる階層の窓ガラスに貼り付けられたフィルムアンテナが接続されることが好ましい。また、第１のケーブルの外装は、建造物の外壁と同じ色であることが好ましい。また、無線基地局が建造物の屋上に設置されることが好ましい。また、各フィルムカップラは、カップリングロスが可変であることが好ましい。また、第１のケーブルは同軸ケーブルであり、該第１のケーブルが建造物の外壁の隙間に敷設されることが好ましい。   In the present invention, two or more pairs of film couplers and film antennas are installed in a hierarchy forming a radio coverage area of a building, and each film coupler is a radio base station via an individual first cable. It is preferable to be connected to. In addition, it is preferable that each film antenna is connected to a radio base station in a daisy chain, and in addition to this, a film coupler located at the end is attached to a window glass of a different level separately from the film antenna of the same level. It is preferable that a film antenna is connected. Moreover, it is preferable that the exterior of a 1st cable is the same color as the outer wall of a building. Moreover, it is preferable that a radio base station is installed on the roof of a building. Each film coupler preferably has a variable coupling loss. The first cable is preferably a coaxial cable, and the first cable is preferably laid in a gap between the outer walls of the building.

本発明によれば、設置が容易で伝送損失の小さい屋内カバレッジ構造を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, an indoor coverage structure with easy installation and a small transmission loss can be provided.

本発明の好適な実施の形態について説明する。
図１に本実施形態にかかるカバレッジ構造を示す。このカバレッジ構造は、屋上に無線基地局が設置された建築物の各階にカバレッジエリアを形成する構造である。
無線基地局１４の送受信端子には、軟質材料で形成された小口径の同軸ケーブル１３ａが接続されている。同軸ケーブル１３ａは、建造物の外壁の隙間（溝など）を利用して、敷設（接着剤などを用いて）されている。建造物の最上階の窓ガラス１５の近傍には、フィルムカップラ１２ａが設置されており、フィルムカップラ１２ａの一方の端子は同軸ケーブル１３ｂを介してフィルムアンテナ１１ａに接続されている。フィルムアンテナ１１ａは、建造物の窓ガラス１５に貼り付けられて固定されている。フィルムカップラ１２ａの他方の端子は、同軸ケーブル１３ｃを介して一つ下の階層のフィルムカップラ１２ｂに接続されている。
各階において、上記同様にフィルムカップラ１２の一方の端子をフィルムアンテナ１１に、他方の端子を一つ下の階のフィルムカップラ１２に接続することで、全体としては櫛形の配線が設置されている。すなわち、フィルムカップラ１２（１２ａ〜１２ｅ）は、同軸ケーブル１３ａ、１３ｃ、１３ｅ、１３ｇ、１３ｉを介して数珠繋ぎで無線基地局１４と接続されている。また、フィルムカップラ１２のそれぞれは、同軸ケーブル１３ｂ、１３ｄ、１３ｆ、１３ｈ、１３ｊを介して、同じ階層のフィルムアンテナ１１（１１ａ〜１１ｅ）と接続されている。ただし、最も下の階層側のフィルムカップラ１２ｅは、一つ下の階層のフィルムアンテナ１１ｆにも接続されている。なお、最下層にもフィルムカップラをさらに設置し、それを介してフィルムアンテナ１１ｆとフィルムカップラ１２ｅとを接続しても良い A preferred embodiment of the present invention will be described.
FIG. 1 shows a coverage structure according to the present embodiment. This coverage structure is a structure in which a coverage area is formed on each floor of a building where a radio base station is installed on the rooftop.
A small-diameter coaxial cable 13 a made of a soft material is connected to the transmission / reception terminal of the radio base station 14. The coaxial cable 13a is laid (using an adhesive or the like) using gaps (grooves or the like) in the outer wall of the building. A film coupler 12a is installed in the vicinity of the window glass 15 on the top floor of the building, and one terminal of the film coupler 12a is connected to the film antenna 11a via a coaxial cable 13b. The film antenna 11a is affixed and fixed to the window glass 15 of the building. The other terminal of the film coupler 12a is connected to the film coupler 12b at the next lower level via a coaxial cable 13c.
On each floor, as described above, one terminal of the film coupler 12 is connected to the film antenna 11 and the other terminal is connected to the film coupler 12 on the next lower floor, so that a comb-like wiring is installed as a whole. That is, the film coupler 12 (12a to 12e) is connected to the radio base station 14 in a daisy chain via coaxial cables 13a, 13c, 13e, 13g, and 13i. Each of the film couplers 12 is connected to the film antenna 11 (11a to 11e) at the same level via coaxial cables 13b, 13d, 13f, 13h, and 13j. However, the film coupler 12e on the lowest level is also connected to the film antenna 11f on the next lower level. In addition, a film coupler may be further installed in the lowest layer, and the film antenna 11f and the film coupler 12e may be connected via the film coupler.

各フィルムアンテナ１１の送信出力は、各階層のフィルムカップラ１２のカップリングロスを調整することによって、それぞれフィルムアンテナ端において所望の送信レベルとなるように（例えば、全ての階層において送信レベルが同等となるように）制御される。   The transmission output of each film antenna 11 is adjusted to the desired transmission level at the film antenna end by adjusting the coupling loss of the film coupler 12 of each layer (for example, the transmission level is the same in all layers). To be controlled).

各階層ごとにフィルムアンテナ１１の送信出力レベルを調整することにより、各階層とも同一の送信レベルでカバレッジエリアを確保できる。   By adjusting the transmission output level of the film antenna 11 for each layer, the coverage area can be secured at the same transmission level in each layer.

本実施形態にかかるカバレッジ構造は、窓ガラス１５にフィルムアンテナ１１を設置し、直接カバーするため、従来の各階層に対する追加同軸ケーブルやカップラが不要である。
しかも、増幅機能を備えたアンプを必要としないため、電源供給が不要である。
さらに、建造物の外壁に同軸ケーブル１３を敷設しているため、専門的な工事技術が不要であり、工事の作業性が高い。また、フィルムカップラ１２及びフィルムアンテナ１１を用いることにより、屋内アンテナの設置は横方向の同軸ケーブルの敷設が不要となる。 In the coverage structure according to the present embodiment, the film antenna 11 is installed on the window glass 15 and directly covered, so that no additional coaxial cable or coupler for each conventional layer is required.
In addition, since an amplifier having an amplification function is not required, power supply is unnecessary.
Furthermore, since the coaxial cable 13 is laid on the outer wall of the building, specialized construction techniques are not required, and the workability of the construction is high. Further, by using the film coupler 12 and the film antenna 11, the installation of the indoor antenna does not require the installation of a horizontal coaxial cable.

同軸ケーブル１３は、小口径であるためケーブル自体の損失は大きいが、窓ガラス１５にフィルムアンテナ１１を貼り付けることによって建造物の横方向の配線のためのカップラは不要となるため、カバレッジ構造全体としては従来構成よりも伝送損失が低減され、十分な信号強度が得られる。   Since the coaxial cable 13 has a small diameter, the loss of the cable itself is large. However, by attaching the film antenna 11 to the window glass 15, a coupler for wiring in the horizontal direction of the building is not necessary. As a result, transmission loss is reduced as compared with the conventional configuration, and sufficient signal strength is obtained.

同軸ケーブル１３を、建造物外壁の隙間にケーブル設置金具を使用せずに敷設すれば、建造物の外壁が外観上フラットとなり建造物の美観を損ないにくい。
さらに、同軸ケーブル１３の色を建造物の外壁と同じ色とすれば、外観上同軸ケーブルが敷設されているか否か分かりにくくなり、より建造物の美観を損いにくい。 If the coaxial cable 13 is laid in the gap between the building outer walls without using the cable installation bracket, the outer wall of the building becomes flat in appearance, and the appearance of the building is hardly damaged.
Furthermore, if the color of the coaxial cable 13 is the same as that of the outer wall of the building, it is difficult to determine whether or not the coaxial cable is laid in appearance, and the appearance of the building is less likely to be impaired.

なお、フィルムアンテナ１１が一枚では建造物のフロア内にカバレッジエリアを形成しきれない場合には、図１に破線で示すように、別のフィルムアンテナを他の窓に設置し、別経路の同軸ケーブル１３を用いて無線基地局１４と接続するようにすればよい。すなわち、フィルムアンテナ１１を使用しているため、必要に応じて建造物の反対側の窓ガラス１５に容易にフィルムアンテナ１１を設置可能であり、カバレッジエリアをフレキシブルに形成できる。例えば、会議室などの通信安定性が重要視される場所の近傍の窓ガラス１５にフィルムアンテナ１１を貼り付けることにより、その場所に安定したカバレッジエリアを形成できる。   In addition, when the coverage area cannot be formed in the floor of a building with one film antenna 11, another film antenna is installed in another window as shown by a broken line in FIG. What is necessary is just to make it connect with the wireless base station 14 using the coaxial cable 13. FIG. That is, since the film antenna 11 is used, the film antenna 11 can be easily installed on the window glass 15 on the opposite side of the building as necessary, and the coverage area can be formed flexibly. For example, by attaching the film antenna 11 to the window glass 15 in the vicinity of a place where communication stability is important, such as a conference room, a stable coverage area can be formed at that place.

従来のカバレッジ構造では、屋内アンテナまで接続するための数個のカップラと同軸ケーブルとを縦方向の配線に追加しなければならなかったが、本実施形態にかかるカバレッジ構造ではこれらが不要であるため、工事費用及び部品代を低減でき、費用対効果に優れる。   In the conventional coverage structure, several couplers and coaxial cables for connecting to the indoor antenna had to be added to the vertical wiring, but these are unnecessary in the coverage structure according to this embodiment. , Construction cost and parts cost can be reduced, and it is cost effective.

なお、上記実施形態は本発明の好適な実施の一例であり、本発明はこれに限定されることはない。
例えば、上記実施形態においては、建造物の屋上に無線基地局が設置されている場合を例としたが、必ずしもこれに限定されることはなく、建造物に隣接して無線基地局が設置されていても良い。
また、上記実施形態においては、建造物の全ての階層にカバレッジエリアを形成する場合を例としたが、カバレッジエリアを形成しない階層があっても良いことは言うまでもない。
また、上記実施形態においては、フィルムカップラが数珠繋ぎで無線基地局と接続された構成を例としたが、必ずしもフィルムカップラを直列に接続する必要はなく、途中で枝分かれするように構成しても良い。
このように、本発明は様々な変形が可能である。 In addition, the said embodiment is an example of suitable implementation of this invention, and this invention is not limited to this.
For example, in the above embodiment, the case where a radio base station is installed on the roof of a building is taken as an example, but the present invention is not necessarily limited to this, and the radio base station is installed adjacent to the building. May be.
Moreover, in the said embodiment, although the case where a coverage area was formed in all the hierarchy of a building was taken as an example, it cannot be overemphasized that there may be a hierarchy which does not form a coverage area.
Moreover, in the said embodiment, although the film coupler was connected to the radio base station by the daisy chain connection, it is not always necessary to connect the film coupler in series, and the film coupler may be configured to branch in the middle. .
As described above, the present invention can be variously modified.

本発明の好適な実施の形態にかかる屋内カバレッジ構造を示す図である。It is a figure which shows the indoor coverage structure concerning suitable embodiment of this invention. 従来の屋内カバレッジ構造を示す図である。It is a figure which shows the conventional indoor coverage structure.

符号の説明Explanation of symbols

１１ フィルムアンテナ
１２ フィルムカップラ
１３ 同軸ケーブル
１４ 無線基地局
１５ 窓ガラス 11 Film Antenna 12 Film Coupler 13 Coaxial Cable 14 Radio Base Station 15 Window Glass

Claims (8)

建造物の少なくとも１階層の内部に無線カバレッジエリアを形成するための屋内カバレッジ構造であって、
前記建造物の外部に設置された無線基地局と、
前記建造物の前記無線カバレッジエリアを形成する階層の外壁に設置されたフィルムカップラと、
前記建造物の前記無線カバレッジエリアを形成する階層の窓ガラスに貼り付けられ、同じ階層の前記フィルムカップラと接続されたフィルムアンテナと、
前記無線基地局と、前記各フィルムカップラとを接続する第１のケーブルと、
各階層の前記フィルムカップラと前記フィルムアンテナとを接続する第２のケーブルとを有することを特徴とする屋内カバレッジ構造。 An indoor coverage structure for forming a radio coverage area within at least one level of a building,
A radio base station installed outside the building;
A film coupler installed on an outer wall of a layer forming the radio coverage area of the building;
A film antenna attached to a window glass of a layer forming the radio coverage area of the building and connected to the film coupler of the same layer;
A first cable connecting the radio base station and the film couplers;
An indoor coverage structure comprising a second cable connecting the film coupler and the film antenna of each level. 前記建造物の前記無線カバレッジエリアを形成する階層には、前記フィルムカップラと前記フィルムアンテナとが２対以上設置され、
それぞれの前記フィルムカップラが、それぞれ個別の前記第１のケーブルを介して前記無線基地局と接続されたことを特徴とする請求項１記載の屋内カバレッジ構造。 Two or more pairs of the film coupler and the film antenna are installed in a hierarchy forming the radio coverage area of the building,
The indoor coverage structure according to claim 1, wherein each of the film couplers is connected to the radio base station via the individual first cable. 前記各フィルムアンテナが、数珠繋ぎで前記無線基地局と接続されたことを特徴とする請求項１又は２記載の屋内カバレッジ構造。   The indoor coverage structure according to claim 1 or 2, wherein each of the film antennas is connected to the radio base station in a daisy chain. 末端に位置するフィルムカップラに、同じ階層のフィルムアンテナとは別に、異なる階層の窓ガラスに貼り付けられたフィルムアンテナが接続されたことを特徴とする請求項３記載の屋内カバレッジ構造。   4. The indoor coverage structure according to claim 3, wherein a film antenna attached to a window glass of a different level is connected to the film coupler located at the end separately from the film antenna of the same level. 前記第１のケーブルの外装は、前記建造物の外壁と同じ色であることを特徴とする請求項１から４のいずれか１項記載の屋内カバレッジ構造。   5. The indoor coverage structure according to claim 1, wherein an exterior of the first cable has the same color as an outer wall of the building. 前記無線基地局が前記建造物の屋上に設置されたことを特徴とする請求項１から５のいずれか１項記載の屋内カバレッジ構造。   The indoor coverage structure according to any one of claims 1 to 5, wherein the radio base station is installed on a roof of the building. 前記各フィルムカップラは、カップリングロスが可変であることを特徴とする請求項１から６のいずれか１項記載の屋内カバレッジ構造。   The indoor coverage structure according to any one of claims 1 to 6, wherein each of the film couplers has a variable coupling loss. 前記第１のケーブルは同軸ケーブルであり、該第１のケーブルが前記建造物の外壁の隙間に敷設されたことを特徴とする請求項１から７のいずれか１項記載の屋内カバレッジ構造。   The indoor coverage structure according to any one of claims 1 to 7, wherein the first cable is a coaxial cable, and the first cable is laid in a gap between outer walls of the building.
JP2006280402A 2006-10-13 2006-10-13 Indoor coverage structure Expired - Fee Related JP4770690B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256304A (en) * 1989-03-29 1990-10-17 Honda Denshi Giken:Kk Transparent planer antenna and communication system utilizing the antenna
JPH1188035A (en) * 1997-07-08 1999-03-30 Tena:Kk Plane radiation antenna, and transmission and reception system using the antenna
JPH11191752A (en) * 1997-12-25 1999-07-13 Hitachi Ltd Radio base station and radio communication area forming method
JP2002152107A (en) * 2000-11-09 2002-05-24 Nippon Telegr & Teleph Corp <Ntt> Radio subscriber station device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256304A (en) * 1989-03-29 1990-10-17 Honda Denshi Giken:Kk Transparent planer antenna and communication system utilizing the antenna
JPH1188035A (en) * 1997-07-08 1999-03-30 Tena:Kk Plane radiation antenna, and transmission and reception system using the antenna
JPH11191752A (en) * 1997-12-25 1999-07-13 Hitachi Ltd Radio base station and radio communication area forming method
JP2002152107A (en) * 2000-11-09 2002-05-24 Nippon Telegr & Teleph Corp <Ntt> Radio subscriber station device

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