WO2006006631A1 - Wireless communication system - Google Patents

Wireless communication system Download PDF

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Publication number
WO2006006631A1
WO2006006631A1 PCT/JP2005/012958 JP2005012958W WO2006006631A1 WO 2006006631 A1 WO2006006631 A1 WO 2006006631A1 JP 2005012958 W JP2005012958 W JP 2005012958W WO 2006006631 A1 WO2006006631 A1 WO 2006006631A1
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WO
WIPO (PCT)
Prior art keywords
wireless communication
radio wave
leaky transmission
radiation
antenna element
Prior art date
Application number
PCT/JP2005/012958
Other languages
French (fr)
Japanese (ja)
Inventor
Jun Yaginuma
Naohiro Matsushita
Tomonori Sugiyama
Original Assignee
Toshiba Tec Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of WO2006006631A1 publication Critical patent/WO2006006631A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1698—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone

Definitions

  • the present invention relates to a wireless communication system that performs wireless communication between at least one base station and one or more wireless communication terminals.
  • Japanese Patent Laid-Open No. 7-115422 is known as an example of a wireless communication system that performs wireless communication between at least one base station and one or more wireless communication terminals.
  • a plurality of base stations are arranged at a predetermined interval on an indoor ceiling or the like, and one or a plurality of radio communication terminals are arranged in the radio communication areas of these base stations, respectively. Disclosure of the Invention
  • the arrangement of base stations in order to prevent an incommunicable area from occurring indoors, is set so that a part of the wireless communication areas of adjacent base stations overlap each other. Has been. Also, in order to prevent radio wave interference between adjacent radio communication areas, the frequency power of radio waves used in adjacent radio communication areas is set to a different value. However, in this case, when the number of radio communication areas increases, there is a problem that the setting of the frequency of the radio wave used in each radio communication area becomes complicated.
  • An object of the present invention is to prevent radio wave interference between adjacent radio communication areas, and to change the frequency of radio waves used in radio communication areas adjacent to each other.
  • Wireless communication that enables reliable and good wireless communication between the base station and the wireless communication terminal, which does not require complicated setting of the frequency of the radio wave used in each wireless communication area. Is to provide a system.
  • FIG. 1 is a diagram showing an overall configuration of a first embodiment of the present invention.
  • FIG. 2 is a view of the main part of the first embodiment as viewed obliquely upward.
  • FIG. 3 is a diagram showing a radiation angle of a radio wave in a leaky transmission line in the first embodiment.
  • FIG. 4 is a diagram for explaining a state of transmission / reception between two leaky transmission lines adjacent to each other and a wireless communication terminal in the first embodiment.
  • FIG. 5 is a diagram showing a configuration of a main part of a second embodiment of the present invention.
  • FIG. 6 is a diagram showing a state of transmission / reception between a leaky transmission line and a wireless communication terminal in the second embodiment.
  • FIG. 1 is a diagram of the overall configuration of a wireless communication system laid in an indoor space, looking upward.
  • FIG. 2 is a view of the main part in FIG. 1 as viewed obliquely from above.
  • a plurality of such groups of the first column and the second column are prepared, and these groups are arranged at a predetermined interval from each other.
  • a wireless communication terminal 17 using a personal computer or the like is installed on any desk 12 among the desks 12. These wireless communication terminals 17 have a display 17a and are operated by an operator. Each wireless communication terminal 17 includes an antenna element 18 having a short leakage transmission path force at the upper edge portion of the casing of the display 17a.
  • each of the leaky transmission lines 14 has slots 14 a at positions at regular intervals along the axial direction, and signals output from the base station 15 are terminated by the terminators 16. Radiated from each slot 14a, and received radio waves coming from outside from each slot 14a, and transmitted signals based on the captured radio waves to the base station 15. To do. There is directivity in the radiation direction and incidence direction of the radio wave in each slot 14a. That is, the radiation direction of the radio wave in each slot 14a is inclined toward the terminator 16 side (axial direction side) by a predetermined angle ⁇ with respect to the direction orthogonal to the axial direction of the leaky transmission line 14. In addition, only radio waves arriving at the same angle as the radiation angle among the radio waves arriving with external force are efficiently incident on each slot 14a.
  • the antenna element (short leakage transmission path) 18 of each wireless communication terminal 17 also has slots at positions at regular intervals along the axial direction, and can generate radio waves according to signals output from the terminal body.
  • radio waves arriving from an external force are captured from each slot, and signals based on the captured radio waves are supplied to the terminal.
  • the antenna element 18 also has directivity in the radiation direction and the incident direction of radio waves in each slot. That is, the radiation direction of the radio wave of each slot is inclined toward the axial direction by a predetermined angle ⁇ with respect to the direction orthogonal to the axial direction of the antenna element 18.
  • ⁇ with respect to the direction orthogonal to the axial direction of the antenna element 18.
  • the radio waves arriving from the outside only the radio waves arriving at the same angle as the radiation direction are efficiently incident on each slot.
  • each leakage transmission path 14 is arranged such that the transmission direction of the signal supplied from each base station 15 is opposite between the two leakage transmission paths 14 adjacent to each other. It is. That is, each leaky transmission line 14 is arranged so that the radiation directions of two leaky transmission lines 14 adjacent to each other out of the leaky transmission lines 14 are opposite to each other. The mutual intervals of the leaky transmission lines 14 are set so that the wireless communication areas 19 of the two leaky transmission lines 14 adjacent to each other partially overlap each other.
  • FIG. 4 shows a state of transmission / reception between two leaky transmission lines 14 adjacent to each other and the wireless communication terminal 17.
  • leaky transmission lines 14 adjacent to each other are shown as a leaky transmission line 14-1 and a leaky transmission line 14-2.
  • the leaky transmission line 14-1 transmits the signal output from the base station 15-1, toward the terminator 16-1.
  • the leaky transmission line 14-2 transmits the signal output from the base station 15-2 to the terminator 16-2.
  • One radio communication terminal 17 is arranged at a position where the radio communication area 19 of the leaky transmission path 14-1 and the radio communication area 19 of the leaky transmission path 14-2 overlap each other.
  • the direction of the radio wave radiated from the antenna element 18 of the wireless communication terminal 17 is indicated by a dashed arrow.
  • the radiation direction of the radio wave of the antenna element 18 is in a state of facing almost straight to the radio wave radiation direction of the leaky transmission path 14-1, and a large angle with respect to the radio wave radiation direction of the leaky transmission path 14-2. It is in a state of crossing at.
  • the antenna element 18 of the wireless communication terminal 17 efficiently receives a radio wave arriving at the same angle as its own radio wave, that is, a radio wave radiated from the leaky transmission line 14-1 (reception). Electric field strength is high).
  • the radio wave radiated from the leaky transmission line 14-2 is a radio wave arriving at an angle different from the radiation angle of its own radio wave with respect to the antenna element 18. Therefore, the radio wave radiated from the leaky transmission line 14-2 is not received by the antenna element 18.
  • the leaky transmission path 14-1 efficiently receives radio waves arriving at the same angle as the radiation angle of its own radio waves, that is, radio waves radiated from the antenna element 18 of the radio communication terminal 17.
  • the radio wave radiated from the antenna element 18 is a radio wave that arrives at an angle different from the radiation angle of its own radio wave. Therefore, the radio wave radiated from the antenna element 18 is not received by the leaky transmission line 14-2.
  • the radiation direction of the radio wave of the antenna element 18 is the radiation pattern of the leaky transmission line 14-2. It almost faces the direction of the radio wave, and greatly intersects with the radiation direction of the leaky transmission line 14-1.
  • the antenna element 18 of the wireless communication terminal 17 efficiently receives a radio wave arriving at the same angle as its radio wave, that is, a radio wave radiated from the leaky transmission line 14-2.
  • the leaky transmission line 14-2 efficiently receives radio waves arriving at the same angle as the radio wave radiation angle, that is, radio waves radiated from the antenna element 18 of the wireless communication terminal 17. In this way, reliable and good wireless communication is performed between the base station 15-2 and the wireless communication terminal 17.
  • a plurality of leaky transmission lines 14 having directivity in the radio wave radiation direction and the incident direction are respectively connected to the base station 15, and one or more radio wave radiation directions and incident directions have directivity.
  • a plurality of wireless communication terminals 17 are prepared, and each leakage transmission path 14 is arranged so that the radiation directions of two leakage transmission paths 14 adjacent to each other among the leakage transmission paths 14 are opposite to each other.
  • the two leaky transmission lines 14 adjacent to each other have the same frequency.
  • reliable and good wireless communication between the base station 15 and the wireless communication terminal 17 is possible without causing radio wave interference between the wireless communication areas of the two leaky transmission lines 14 adjacent to each other. Become.
  • the frequency of the radio wave used in the wireless communication area of each leaky transmission line 14 need not be set to the same value but different from each other. Therefore, it is easy to set the frequency even if there are many radio communication areas.
  • a box-shaped antenna element housing member 21 is provided on the upper edge portion of the casing of the display 17 a in each wireless communication terminal 17 via a rotating shaft 20.
  • the antenna element 18 is accommodated in the antenna element accommodating member 21.
  • the antenna element 18 has slots 18a at positions at regular intervals along the axial direction, and by rotating the rotating shaft 20, the direction of the antenna element 18 can be rotated 360 degrees in the horizontal direction. [0027] Other configurations are the same as those of the first embodiment.
  • radio communication terminal 17 when radio communication terminal 17 is arranged in radio communication area 19-1, the directional force of the radio wave radiated from antenna element 18 of radio communication terminal 17 The direction of the antenna element 18 is adjusted by rotating the rotating shaft 20 by the operator so as to face the straight direction with respect to the radiation direction. As a result, reliable and satisfactory wireless communication can be performed between the wireless communication terminal 17 and the base station 15.
  • the wireless communication terminal 17 If the wireless communication terminal 17 is moved to the wireless communication area 19-2 side as it is, the radio wave radiation direction force of the antenna element 18 greatly intersects the radio wave radiation direction of the leakage transmission path 14. Become. In this state, wireless communication between the wireless communication terminal 17 and the base station 15 is impossible.
  • the rotation shaft 20 is rotated by the operator, and the direction of the antenna element 18 is rotated 180 degrees.
  • the radiation direction of the radio wave of the antenna element 18 comes to face almost straight to the radiation direction of the radio wave of the leakage transmission path 14. Therefore, reliable and good wireless communication can be performed between the wireless communication terminal 17 and the base station 15.
  • the force is such that the direction of the antenna element 18 of the wireless communication terminal 17 is rotated by the rotation shaft 20.
  • the antenna element housing in which the antenna element 18 is housed is not limited thereto.
  • the member 21 may be configured to be detachable from the casing of the wireless communication terminal 17 in any direction. In this case, when the antenna element housing member 21 is attached to the radio communication terminal 17, the direction of the antenna element 18 can be set to an optimum state by adjusting the direction of the antenna element housing member 21.
  • the wireless communication system of the present invention can be used for a system that performs wireless communication between at least one base station and one or more wireless communication terminals via a plurality of leaky transmission paths. It is.

Abstract

A plurality of leakage transmission paths (14), which has directivities in the radio wave outgoing and incoming directions, are connected to a base station (15). In addition, one or more wireless communication terminals (17) are prepared which have directivities in the radio wave outgoing and incoming directions. The leakage transmission paths (14) are arranged such that the radio wave outgoing directions of two mutually adjacent ones of the leakage transmission paths (14) are opposite to each other.

Description

明 細 書  Specification
無線通信システム  Wireless communication system
技術分野  Technical field
[0001] 本発明は、少なくとも 1つの基地局と 1つまたは複数の無線通信端末との間で無線 通信を行う無線通信システムに関する。  The present invention relates to a wireless communication system that performs wireless communication between at least one base station and one or more wireless communication terminals.
背景技術  Background art
[0002] 少なくとも 1つの基地局と 1つまたは複数の無線通信端末との間で無線通信を行う 無線通信システムの例として、特開平 7— 115422号公報が知られている。この例で は、複数の基地局が互いに所定間隔を隔てて屋内の天井などに配置され、これら基 地局の無線通信領域にそれぞれ 1つまたは複数の無線通信端末が配置されている 発明の開示  As an example of a wireless communication system that performs wireless communication between at least one base station and one or more wireless communication terminals, Japanese Patent Laid-Open No. 7-115422 is known. In this example, a plurality of base stations are arranged at a predetermined interval on an indoor ceiling or the like, and one or a plurality of radio communication terminals are arranged in the radio communication areas of these base stations, respectively. Disclosure of the Invention
[0003] このような無線通信システムでは、屋内に通信不能領域が生じないようにするため、 互いに隣り合う基地局の無線通信領域の一部が相互に重なり合うように、各基地局 の配置が設定されている。また、互いに隣り合う無線通信領域の相互間で電波の干 渉が生じないようにするため、互いに隣り合う無線通信領域で使用される電波の周波 数力 互いに異なる値に設定されている。し力しながら、この場合、無線通信領域の 数が多くなると、各無線通信領域で使用される電波の周波数の設定が複雑化すると いう問題があった。  [0003] In such a wireless communication system, in order to prevent an incommunicable area from occurring indoors, the arrangement of base stations is set so that a part of the wireless communication areas of adjacent base stations overlap each other. Has been. Also, in order to prevent radio wave interference between adjacent radio communication areas, the frequency power of radio waves used in adjacent radio communication areas is set to a different value. However, in this case, when the number of radio communication areas increases, there is a problem that the setting of the frequency of the radio wave used in each radio communication area becomes complicated.
[0004] 本発明の目的は、互いに隣り合う無線通信領域の相互間で電波の干渉を生じるこ となく、し力も互 、に隣り合う無線通信領域で使用される電波の周波数を互 、に異な る値に設定する必要がなぐひいては各無線通信領域で使用される電波の周波数の 設定が複雑化することもなぐ基地局と無線通信端末との間の確実かつ良好な無線 通信が可能な無線通信システムを提供することである。  [0004] An object of the present invention is to prevent radio wave interference between adjacent radio communication areas, and to change the frequency of radio waves used in radio communication areas adjacent to each other. Wireless communication that enables reliable and good wireless communication between the base station and the wireless communication terminal, which does not require complicated setting of the frequency of the radio wave used in each wireless communication area. Is to provide a system.
[0005] 本発明の一態様の無線通信システムは、少なくとも 1つの基地局と、電波の放射方 向および入射方向に指向性を有し、上記基地局力 出力される信号を伝送してその 信号に応じた電波を放射するとともに、外部から入射する電波に応じた信号を上記 基地局に供給する複数の漏洩伝送路と、電波の放射方向および入射方向に指向性 のある漏洩伝送路をアンテナ素子として有する 1つまたは複数の無線通信端末と、を 備え、上記各漏洩伝送路のうち互いに隣り合う 2つの漏洩伝送路の電波の放射方向 が互いに逆向きとなるように、上記各漏洩伝送路が配置されて 、る。 [0005] A wireless communication system according to one aspect of the present invention has directivity in at least one base station in the radiation direction and the incident direction of radio waves, and transmits the signal output from the base station power to the signal. Radiates radio waves according to the A plurality of leaky transmission lines to be supplied to the base station, and one or a plurality of wireless communication terminals having, as antenna elements, leaky transmission lines having directivity in the radiation direction and incident direction of radio waves, and each of the leaky transmission lines Each of the leaky transmission lines is arranged so that the radiation directions of two leaky transmission lines adjacent to each other are opposite to each other.
図面の簡単な説明  Brief Description of Drawings
[0006] [図 1]図 1は、本発明の第 1の実施形態の全体的な構成を示す図。 FIG. 1 is a diagram showing an overall configuration of a first embodiment of the present invention.
[図 2]図 2は、第 1の実施形態の要部を斜め上方力 見た図。  [FIG. 2] FIG. 2 is a view of the main part of the first embodiment as viewed obliquely upward.
[図 3]図 3は、第 1の実施形態における漏洩伝送路の電波の放射角を示す図。  FIG. 3 is a diagram showing a radiation angle of a radio wave in a leaky transmission line in the first embodiment.
[図 4]図 4は、第 1の実施形態における互いに隣り合う 2つの漏洩伝送路と無線通信 端末との間の送受信の様子を説明するための図。  FIG. 4 is a diagram for explaining a state of transmission / reception between two leaky transmission lines adjacent to each other and a wireless communication terminal in the first embodiment.
[図 5]図 5は、本発明の第 2の実施形態の要部の構成を示す図。  FIG. 5 is a diagram showing a configuration of a main part of a second embodiment of the present invention.
[図 6]図 6は、第 2の実施形態における漏洩伝送路と無線通信端末との間の送受信の 様子を示す図。  FIG. 6 is a diagram showing a state of transmission / reception between a leaky transmission line and a wireless communication terminal in the second embodiment.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0007] (第 1の実施形態）  [0007] (First Embodiment)
以下、本発明の第 1の実施形態を、図 1および図 2を参照しながら説明する。図 1は 、屋内空間に敷設されている無線通信システムの全体的な構成を上方力も見た図で ある。図 2は、図 1における要部を斜め上方から見た図である。  Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1 and FIG. Fig. 1 is a diagram of the overall configuration of a wireless communication system laid in an indoor space, looking upward. FIG. 2 is a view of the main part in FIG. 1 as viewed obliquely from above.
[0008] 屋内 11の床面に、複数のデスク 12が横方向に順に並んで配置され、これらデスク 12の列の向かい側に、パーテーシヨン 13を挟んで、別の複数のデスク 12が横方向 に順に並んで配置されている。すなわち、複数のデスク 12が横方向に並んで構成さ れる第 1列と、別の複数のデスク 12が横方向に並んで構成される第 2列とが、上記パ 一テーシヨン 13を挟んで、互いに隣り合う状態に配列されている。  [0008] A plurality of desks 12 are arranged side by side in the horizontal direction on the floor of the indoor 11 and another desk 12 is arranged in the horizontal direction across the partition 13 on the opposite side of the row of the desks 12. They are arranged in order. That is, a first row in which a plurality of desks 12 are arranged in the horizontal direction and a second row in which another plurality of desks 12 are arranged in the horizontal direction sandwich the partition 13 above, They are arranged adjacent to each other.
[0009] このような第 1列および第 2列からなるグループが複数用意され、これらグループが 互いに所定の間隔を空けて配置されて 、る。  [0009] A plurality of such groups of the first column and the second column are prepared, and these groups are arranged at a predetermined interval from each other.
[0010] 各グループのパーティション 13の上縁に、各デスク 12の配列方向に沿って、漏洩 同軸ケーブル等を用いた漏洩伝送路 14がそれぞれ設けられている。そして、各漏洩 伝送路 14の一端に基地局 15が接続され、漏洩伝送路 14の他端に終端器 16が接 続されている。 A leaky transmission line 14 using a leaky coaxial cable or the like is provided on the upper edge of the partition 13 of each group along the arrangement direction of the desks 12. A base station 15 is connected to one end of each leaky transmission line 14, and a terminator 16 is connected to the other end of the leaky transmission line 14. It has been continued.
[0011] 各デスク 12のうち、任意のデスク 12に、パーソナルコンピュータ等を用いた無線通 信端末 17が設置されている。これら無線通信端末 17は、ディスプレイ 17aを有し、ォ ペレータによって操作される。また、各無線通信端末 17は、ディスプレイ 17aの筐体 の上縁部に、短尺の漏洩伝送路力もなるアンテナ素子 18を備えている。  A wireless communication terminal 17 using a personal computer or the like is installed on any desk 12 among the desks 12. These wireless communication terminals 17 have a display 17a and are operated by an operator. Each wireless communication terminal 17 includes an antenna element 18 having a short leakage transmission path force at the upper edge portion of the casing of the display 17a.
[0012] 上記各漏洩伝送路 14は、図 3に示すように、軸方向に沿う一定間隔の位置にそれ ぞれスロット 14aを有しており、基地局 15から出力される信号を終端器 16へ向け伝 送し、その伝送される信号に応じた電波を各スロット 14aから放射するとともに、外部 から到来する電波を各スロット 14aから取込み、取込んだ電波に基づく信号を基地局 15に向け伝送する。各スロット 14aの電波の放射方向および入射方向には、指向性 がある。すなわち、各スロット 14aの電波の放射方向は、当該漏洩伝送路 14の軸方 向と直交する方向に対し、所定角度 Θだけ、終端器 16側（軸方向側）に傾いている。 また、外部力も到来する電波のうち、上記放射の角度と同じ角度で到来する電波の み力 各スロット 14aに効率よく入射する。  As shown in FIG. 3, each of the leaky transmission lines 14 has slots 14 a at positions at regular intervals along the axial direction, and signals output from the base station 15 are terminated by the terminators 16. Radiated from each slot 14a, and received radio waves coming from outside from each slot 14a, and transmitted signals based on the captured radio waves to the base station 15. To do. There is directivity in the radiation direction and incidence direction of the radio wave in each slot 14a. That is, the radiation direction of the radio wave in each slot 14a is inclined toward the terminator 16 side (axial direction side) by a predetermined angle Θ with respect to the direction orthogonal to the axial direction of the leaky transmission line 14. In addition, only radio waves arriving at the same angle as the radiation angle among the radio waves arriving with external force are efficiently incident on each slot 14a.
[0013] 各無線通信端末 17のアンテナ素子 (短尺の漏洩伝送路） 18も、軸方向に沿う一定 間隔の位置にそれぞれスロットを有しており、端末本体から出力される信号に応じた 電波を各スロットから放射するとともに、外部力 到来する電波を各スロットから取込 み、取込んだ電波に基づく信号を端末本体に供給する。このアンテナ素子 18におけ る各スロットの電波の放射方向および入射方向にも、指向性がある。すなわち、各ス ロットの電波の放射方向は、当該アンテナ素子 18の軸方向と直交する方向に対し、 所定角度 Θだけ、軸方向側に傾いている。また、外部から到来する電波のうち、上記 放射方向の角度と同じ角度で到来する電波のみ力 各スロットに効率よく入射する。  [0013] The antenna element (short leakage transmission path) 18 of each wireless communication terminal 17 also has slots at positions at regular intervals along the axial direction, and can generate radio waves according to signals output from the terminal body. In addition to radiating from each slot, radio waves arriving from an external force are captured from each slot, and signals based on the captured radio waves are supplied to the terminal. The antenna element 18 also has directivity in the radiation direction and the incident direction of radio waves in each slot. That is, the radiation direction of the radio wave of each slot is inclined toward the axial direction by a predetermined angle Θ with respect to the direction orthogonal to the axial direction of the antenna element 18. In addition, of the radio waves arriving from the outside, only the radio waves arriving at the same angle as the radiation direction are efficiently incident on each slot.
[0014] 一方、上記各漏洩伝送路 14は、それぞれの基地局 15から供給される信号の伝送 方向が、互いに隣り合う 2つの漏洩伝送路 14の相互間で逆向きとなるように、配置さ れている。すなわち、各漏洩伝送路 14のうち互いに隣り合う 2つの漏洩伝送路 14の 電波の放射方向が互いに逆向きとなるように、各漏洩伝送路 14が配置されて 、る。 そして、互いに隣り合う 2つの漏洩伝送路 14のそれぞれ無線通信領域 19の一部が 相互に重なり合うように、各漏洩伝送路 14の相互間隔が設定されている。 [0015] 互いに隣り合う 2つの漏洩伝送路 14と無線通信端末 17との間の送受信の様子を、 図 4に示している。 On the other hand, each leakage transmission path 14 is arranged such that the transmission direction of the signal supplied from each base station 15 is opposite between the two leakage transmission paths 14 adjacent to each other. It is. That is, each leaky transmission line 14 is arranged so that the radiation directions of two leaky transmission lines 14 adjacent to each other out of the leaky transmission lines 14 are opposite to each other. The mutual intervals of the leaky transmission lines 14 are set so that the wireless communication areas 19 of the two leaky transmission lines 14 adjacent to each other partially overlap each other. FIG. 4 shows a state of transmission / reception between two leaky transmission lines 14 adjacent to each other and the wireless communication terminal 17.
すなわち、図 4では、説明のため、互いに隣り合う 2つの漏洩伝送路 14を、漏洩伝 送路 14-1および漏洩伝送路 14-2として、示している。漏洩伝送路 14-1は、基地局 1 5-1から出力される信号を終端器 16-1に向け伝送する。漏洩伝送路 14-2は、基地 局 15-2から出力される信号を終端器 16-2に向け伝送する。この漏洩伝送路 14-1の 無線通信領域 19と漏洩伝送路 14-2の無線通信領域 19とが互いに重なり合う位置 に、 1つの無線通信端末 17が配置されている。  That is, in FIG. 4, for the sake of explanation, two leaky transmission lines 14 adjacent to each other are shown as a leaky transmission line 14-1 and a leaky transmission line 14-2. The leaky transmission line 14-1 transmits the signal output from the base station 15-1, toward the terminator 16-1. The leaky transmission line 14-2 transmits the signal output from the base station 15-2 to the terminator 16-2. One radio communication terminal 17 is arranged at a position where the radio communication area 19 of the leaky transmission path 14-1 and the radio communication area 19 of the leaky transmission path 14-2 overlap each other.
[0016] 無線通信端末 17のアンテナ素子 18から放射される電波の方向を、破線矢印で示 している。アンテナ素子 18の電波の放射方向は、漏洩伝送路 14-1の電波の放射方 向に対してほぼ真っ直ぐに向き合う状態にあり、漏洩伝送路 14-2の電波の放射方向 に対しては大きな角度で交差する状態にある。  [0016] The direction of the radio wave radiated from the antenna element 18 of the wireless communication terminal 17 is indicated by a dashed arrow. The radiation direction of the radio wave of the antenna element 18 is in a state of facing almost straight to the radio wave radiation direction of the leaky transmission path 14-1, and a large angle with respect to the radio wave radiation direction of the leaky transmission path 14-2. It is in a state of crossing at.
[0017] この場合、無線通信端末 17のアンテナ素子 18は、自身の電波の放射角度と同じ 角度で到来する電波、つまり漏洩伝送路 14-1から放射される電波を、効率よく受信 する（受信電界強度が大きい)。漏洩伝送路 14-2から放射される電波は、アンテナ素 子 18にとつて、自身の電波の放射角度と異なる角度で到来する電波である。よって、 漏洩伝送路 14-2から放射される電波は、アンテナ素子 18で受信されない。  [0017] In this case, the antenna element 18 of the wireless communication terminal 17 efficiently receives a radio wave arriving at the same angle as its own radio wave, that is, a radio wave radiated from the leaky transmission line 14-1 (reception). Electric field strength is high). The radio wave radiated from the leaky transmission line 14-2 is a radio wave arriving at an angle different from the radiation angle of its own radio wave with respect to the antenna element 18. Therefore, the radio wave radiated from the leaky transmission line 14-2 is not received by the antenna element 18.
[0018] 漏洩伝送路 14-1は、自身の電波の放射角度と同じ角度で到来する電波、つまり無 線通信端末 17のアンテナ素子 18から放射される電波を、効率よく受信する。一方の 漏洩伝送路 14- 2は、アンテナ素子 18から放射される電波は、自身の電波の放射角 度と異なる角度で到来する電波である。よって、アンテナ素子 18から放射される電波 は、漏洩伝送路 14-2で受信されない。  [0018] The leaky transmission path 14-1 efficiently receives radio waves arriving at the same angle as the radiation angle of its own radio waves, that is, radio waves radiated from the antenna element 18 of the radio communication terminal 17. On the other hand, in the leaky transmission line 14-2, the radio wave radiated from the antenna element 18 is a radio wave that arrives at an angle different from the radiation angle of its own radio wave. Therefore, the radio wave radiated from the antenna element 18 is not received by the leaky transmission line 14-2.
[0019] こうして、基地局 15-1と無線通信端末 17との間で、確実かつ良好な無線通信が行 われる。  [0019] Thus, reliable and good wireless communication is performed between the base station 15-1 and the wireless communication terminal 17.
[0020] なお、仮に、図 4において、無線通信端末 17の設定状態が水平方向に 180度回転 されると、アンテナ素子 18の電波の放射方向は、漏洩伝送路 14-2の電波の放射方 向に対してほぼ真っ直ぐに向き合うようになり、漏洩伝送路 14-1の電波の放射方向 に対しては大きく交差するようになる。 [0021] この場合、無線通信端末 17のアンテナ素子 18は、自身の電波の放射角度と同じ 角度で到来する電波、つまり漏洩伝送路 14-2から放射される電波を、効率よく受信 する。漏洩伝送路 14-2は、自身の電波の放射角度と同じ角度で到来する電波、つま り無線通信端末 17のアンテナ素子 18から放射される電波を、効率よく受信する。こう して、基地局 15-2と無線通信端末 17との間で、確実かつ良好な無線通信が行われ る。 In FIG. 4, if the setting state of the wireless communication terminal 17 is rotated by 180 degrees in the horizontal direction, the radiation direction of the radio wave of the antenna element 18 is the radiation pattern of the leaky transmission line 14-2. It almost faces the direction of the radio wave, and greatly intersects with the radiation direction of the leaky transmission line 14-1. [0021] In this case, the antenna element 18 of the wireless communication terminal 17 efficiently receives a radio wave arriving at the same angle as its radio wave, that is, a radio wave radiated from the leaky transmission line 14-2. The leaky transmission line 14-2 efficiently receives radio waves arriving at the same angle as the radio wave radiation angle, that is, radio waves radiated from the antenna element 18 of the wireless communication terminal 17. In this way, reliable and good wireless communication is performed between the base station 15-2 and the wireless communication terminal 17.
[0022] このように、電波の放射方向および入射方向に指向性のある複数の漏洩伝送路 14 がそれぞれ基地局 15に接続され、かつ電波の放射方向および入射方向に指向性 のある 1つまたは複数の無線通信端末 17が用意され、各漏洩伝送路 14のうち互い に隣り合う 2つの漏洩伝送路 14の電波の放射方向が互いに逆向きとなるように各漏 洩伝送路 14が配置されることにより、互いに隣り合う 2つの漏洩伝送路 14の無線通 信領域の一部が相互に重なり合っていても、また互いに隣り合う 2つの漏洩伝送路 1 4力 放射される電波の周波数が同じであっても、互いに隣り合う 2つの漏洩伝送路 1 4の無線通信領域の相互間で電波の干渉を生じることなぐ基地局 15と無線通信端 末 17との間の確実かつ良好な無線通信が可能となる。  [0022] In this way, a plurality of leaky transmission lines 14 having directivity in the radio wave radiation direction and the incident direction are respectively connected to the base station 15, and one or more radio wave radiation directions and incident directions have directivity. A plurality of wireless communication terminals 17 are prepared, and each leakage transmission path 14 is arranged so that the radiation directions of two leakage transmission paths 14 adjacent to each other among the leakage transmission paths 14 are opposite to each other. As a result, even if some of the wireless communication areas of the two leaky transmission lines 14 adjacent to each other overlap each other, the two leaky transmission lines 14 adjacent to each other have the same frequency. However, reliable and good wireless communication between the base station 15 and the wireless communication terminal 17 is possible without causing radio wave interference between the wireless communication areas of the two leaky transmission lines 14 adjacent to each other. Become.
[0023] 各漏洩伝送路 14の無線通信領域で使用される電波の周波数は、同じでよぐ互い に異なる値に設定する必要がない。よって、無線通信領域の数が多くても、周波数の 設定が容易である。  [0023] The frequency of the radio wave used in the wireless communication area of each leaky transmission line 14 need not be set to the same value but different from each other. Therefore, it is easy to set the frequency even if there are many radio communication areas.
[0024] なお、この第 1の実施形態では、 1つの基地局 15に 1つの漏洩伝送路 14が接続さ れている場合を例に説明したが、 1つの基地局 15に複数の漏洩伝送路 14が接続さ れている場合についても、同様に実施できる。  In the first embodiment, the case where one leaky transmission line 14 is connected to one base station 15 has been described as an example, but a plurality of leaky transmission lines are connected to one base station 15. The same applies to the case where 14 is connected.
[0025] (第 2の実施形態）  [0025] (Second Embodiment)
本発明の第 2の実施形態を説明する。  A second embodiment of the present invention will be described.
[0026] 図 5に示すように、各無線通信端末 17におけるディスプレイ 17aの筐体の上縁部に 、回動軸 20を介して、箱状のアンテナ素子収容部材 21が設けられている。このアン テナ素子収容部材 21に、アンテナ素子 18が収容されている。アンテナ素子 18は、 軸方向に沿う一定間隔の位置にそれぞれスロット 18aを有しており、回動軸 20の回 動操作により、アンテナ素子 18の向きを水平方向に 360度回転することができる。 [0027] 他の構成は、第 1の実施形態と同じである。 As shown in FIG. 5, a box-shaped antenna element housing member 21 is provided on the upper edge portion of the casing of the display 17 a in each wireless communication terminal 17 via a rotating shaft 20. The antenna element 18 is accommodated in the antenna element accommodating member 21. The antenna element 18 has slots 18a at positions at regular intervals along the axial direction, and by rotating the rotating shaft 20, the direction of the antenna element 18 can be rotated 360 degrees in the horizontal direction. [0027] Other configurations are the same as those of the first embodiment.
[0028] 図 6に示すように、無線通信端末 17が無線通信領域 19-1に配置された場合、無線 通信端末 17のアンテナ素子 18から放射される電波の方向力 漏洩伝送路 14の電 波の放射方向に対してほぼ真っ直ぐに向き合う状態となるように、オペレータにより回 動軸 20が回動操作されてアンテナ素子 18の向きが調整される。これにより、無線通 信端末 17と基地局 15との間で、確実かつ良好な無線通信が可能となる。  [0028] As shown in FIG. 6, when radio communication terminal 17 is arranged in radio communication area 19-1, the directional force of the radio wave radiated from antenna element 18 of radio communication terminal 17 The direction of the antenna element 18 is adjusted by rotating the rotating shaft 20 by the operator so as to face the straight direction with respect to the radiation direction. As a result, reliable and satisfactory wireless communication can be performed between the wireless communication terminal 17 and the base station 15.
[0029] なお、このまま、無線通信端末 17が無線通信領域 19-2側に移されると、アンテナ 素子 18の電波の放射方向力 漏洩伝送路 14の電波の放射方向に対して大きく交差 するようになる。このままでは、無線通信端末 17と基地局 15との間の無線通信が不 可能である。  If the wireless communication terminal 17 is moved to the wireless communication area 19-2 side as it is, the radio wave radiation direction force of the antenna element 18 greatly intersects the radio wave radiation direction of the leakage transmission path 14. Become. In this state, wireless communication between the wireless communication terminal 17 and the base station 15 is impossible.
[0030] そこで、この場合は、オペレータにより回動軸 20が回動されて、アンテナ素子 18の 向きが 180度回転される。これにより、アンテナ素子 18の電波の放射方向が、漏洩伝 送路 14の電波の放射方向に対してほぼ真っ直ぐに向き合うようになる。したがって、 無線通信端末 17と基地局 15との間で、確実かつ良好な無線通信が可能となる。  Therefore, in this case, the rotation shaft 20 is rotated by the operator, and the direction of the antenna element 18 is rotated 180 degrees. As a result, the radiation direction of the radio wave of the antenna element 18 comes to face almost straight to the radiation direction of the radio wave of the leakage transmission path 14. Therefore, reliable and good wireless communication can be performed between the wireless communication terminal 17 and the base station 15.
[0031] なお、この第 2の実施形態では、無線通信端末 17のアンテナ素子 18の向きを回動 軸 20によって回転する構成とした力 それに限らず、アンテナ素子 18が収容されて いるアンテナ素子収容部材 21を無線通信端末 17の筐体に対して自由な向きに着脱 自在な構成としてもよい。この場合、無線通信端末 17に対するアンテナ素子収容部 材 21の装着に際して、アンテナ素子収容部材 21の向きを調整することにより、アンテ ナ素子 18の向きを最適な状態に設定することができる。  [0031] In the second embodiment, the force is such that the direction of the antenna element 18 of the wireless communication terminal 17 is rotated by the rotation shaft 20. However, the antenna element housing in which the antenna element 18 is housed is not limited thereto. The member 21 may be configured to be detachable from the casing of the wireless communication terminal 17 in any direction. In this case, when the antenna element housing member 21 is attached to the radio communication terminal 17, the direction of the antenna element 18 can be set to an optimum state by adjusting the direction of the antenna element housing member 21.
産業上の利用可能性  Industrial applicability
[0032] 本発明の無線通信システムは、少なくとも 1つの基地局と 1つまたは複数の無線通 信端末との間の無線通信を、複数の漏洩伝送路を介して行うシステム、への利用が 可能である。 The wireless communication system of the present invention can be used for a system that performs wireless communication between at least one base station and one or more wireless communication terminals via a plurality of leaky transmission paths. It is.

Claims

請求の範囲 The scope of the claims
[1] 少なくとも 1つの基地局と、  [1] with at least one base station,
電波の放射方向および入射方向に指向性を有し、前記基地局から出力される信号 を伝送してその信号に応じた電波を放射するとともに、外部から入射する電波に応じ た信号を前記基地局に供給する複数の漏洩伝送路と、  It has directivity in the radiation direction and incidence direction of radio waves, transmits a signal output from the base station and radiates a radio wave according to the signal, and transmits a signal according to the radio wave incident from the outside. A plurality of leaky transmission lines to be supplied to
電波の放射方向および入射方向に指向性のある漏洩伝送路をアンテナ素子として 有する 1つまたは複数の無線通信端末と、  One or more wireless communication terminals having a leaky transmission line having directivity in the radiation direction and incident direction of the radio wave as an antenna element;
を備え、前記各漏洩伝送路のうち互いに隣り合う 2つの漏洩伝送路の電波の放射 方向が互!ヽに逆向きとなるように、前記各漏洩伝送路が配置されて 、ることを特徴と する無線通信システム。  Each of the leaky transmission lines is arranged such that the radiation directions of the two leaky transmission lines adjacent to each other are opposite to each other. Wireless communication system.
[2] 前記各漏洩伝送路は、電波の放射用および入射用のスロットを、軸方向に沿う一 定間隔の位置に、それぞれ有している、 [2] Each of the leaky transmission lines has radio wave radiation and incidence slots at positions at regular intervals along the axial direction.
前記各スロットは、電波の放射方向および入射方向に指向性を有して ヽる、 ことを特徴とする請求項 1に記載の無線通信システム。  2. The wireless communication system according to claim 1, wherein each slot has directivity in a radiation direction and an incident direction of radio waves.
[3] 前記アンテナ素子は、電波の放射用および入射用のスロットを、軸方向に沿う一定 間隔の位置に、それぞれ有している、 [3] The antenna element has radio wave radiation and incident slots at positions at regular intervals along the axial direction.
前記各スロットは、電波の放射方向および入射方向に指向性を有して ヽる、 ことを特徴とする請求項 1に記載の無線通信システム。  2. The wireless communication system according to claim 1, wherein each slot has directivity in a radiation direction and an incident direction of radio waves.
[4] 前記アンテナ素子は、前記無線通信端末の筐体に回動自在に設けられている、 ことを特徴とする請求項 1に記載の無線通信システム。 4. The wireless communication system according to claim 1, wherein the antenna element is rotatably provided in a housing of the wireless communication terminal.
[5] 複数の基地局と、 [5] With multiple base stations,
複数の終端器と、  Multiple terminators,
前記各基地局と前記各終端器との間にそれぞれ接続され、電波の放射方向および 入射方向に指向性を有し、前記基地局力 出力される信号を伝送してその信号に応 じた電波を放射するとともに、外部力 入射する電波に応じた信号を前記基地局に 供給する複数の漏洩伝送路と、  Connected between each base station and each terminator, having directivity in the radiation direction and incidence direction of radio waves, transmitting a signal output from the base station force and responding to the signal A plurality of leaky transmission lines that supply signals to the base station according to radio waves incident on the external force,
電波の放射方向および入射方向に指向性のある漏洩伝送路をアンテナ素子として 有する 1つまたは複数の無線通信端末と、 を備え、前記各漏洩伝送路のうち互いに隣り合う 2つの漏洩伝送路の電波の放射 方向が互!ヽに逆向きとなるように、前記各漏洩伝送路が配置されて 、ることを特徴と する無線通信システム。 One or more wireless communication terminals having a leaky transmission line having directivity in the radiation direction and incident direction of radio waves as an antenna element; Each of the leaky transmission lines is arranged such that the radio wave radiation directions of two leaky transmission lines adjacent to each other are opposite to each other. Wireless communication system.
[6] 前記各漏洩伝送路は、電波の放射用および入射用のスロットを、軸方向に沿う一 定間隔の位置に、それぞれ有している、 [6] Each of the leaky transmission lines has radio wave radiation and incidence slots at positions at regular intervals along the axial direction.
前記各スロットは、電波の放射方向および入射方向に指向性を有して ヽる、 ことを特徴とする請求項 5に記載の無線通信システム。  6. The wireless communication system according to claim 5, wherein each slot has directivity in a radiation direction and an incident direction of radio waves.
[7] 前記アンテナ素子は、電波の放射用および入射用のスロットを、軸方向に沿う一定 間隔の位置に、それぞれ有している、 [7] The antenna element has radio wave radiation and incidence slots at positions at regular intervals along the axial direction.
前記各スロットは、電波の放射方向および入射方向に指向性を有して ヽる、 ことを特徴とする請求項 5に記載の無線通信システム。  6. The wireless communication system according to claim 5, wherein each slot has directivity in a radiation direction and an incident direction of radio waves.
[8] 前記アンテナ素子は、前記無線通信端末の筐体に回動自在に設けられている、 ことを特徴とする請求項 5に記載の無線通信システム。 8. The wireless communication system according to claim 5, wherein the antenna element is rotatably provided in a housing of the wireless communication terminal.
PCT/JP2005/012958 2004-07-14 2005-07-13 Wireless communication system WO2006006631A1 (en)

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JP5412407B2 (en) * 2010-11-24 2014-02-12 東芝テック株式会社 Wireless LAN system, wireless LAN access point, and access point control program

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