JP2005101861A - Wireless communication area control system using leakage coaxial cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless communication area control device using leakage coaxial cables that can easily carry out the installation designing of a part corresponding to a base station in the case of building-up a wireless communication service system in a building, freely carry out location and wideness settings in a radio wave transmission area, set / select a wireless communication service available location by an inexpensive method, and easily carry out system revision with a high degree of freedom depending on the conditional change of a destination that provides the wireless communication service. <P>SOLUTION: In the wireless communication area control system, at least one of leakage coaxial cables 21 to 24 is connected to a wired network 31 for the wireless communication service, the leakage coaxial cable formed of radio wave leakage parts 25, the leakage coaxial cables 21 to 24 are wired to rooms 11 to 14 being service providing areas, and each of a plurality of the radio wave leakage parts 25 is formed corresponding to short range areas in the rooms 11 to 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wireless communication area control device using a leaky coaxial cable, and in particular, uses a leaky coaxial cable provided with a plurality of radio wave leaking portions as an antenna device having a plurality of antennas, and performs wireless communication in a narrow area. The present invention relates to a wireless communication area control device to be managed.

  With reference to FIG. 5, an example of a conventional apparatus configuration for providing a wireless communication service will be described. This apparatus configuration is disclosed in, for example, Patent Document 1. As shown in FIG. 5, a general wireless communication service is such that a wireless communication router 102 is connected to a wired network (Ethernet (registered trademark): Ethernet (registered trademark)) 101, and wireless communication is performed by the wireless communication router 102. Radio wave 103 is emitted. The wireless communication router 102 has a function as a base station in a limited and relatively wide area inside the building where the wired network 101 is laid. A large number of such wireless communication routers 102 are connected in the wired network 101, and an area capable of wireless communication is set for each wireless communication router.

  For the wireless communication router 102 as a base station, a plurality of terminals (PCs) 104 are arranged on the access side in a required distance relationship. These terminals 104 include a transceiver for performing transmission / reception with the wireless communication router 102 via the radio wave 103. According to the configuration shown in FIG. 5, it is possible to provide a uniform wireless communication service in an area set for each wireless communication router 102. A uniform wireless communication service can be received even at a place.

  As long as the wireless communication service method based on the above device configuration uses a transmitter and a receiver in accordance with a standardized access method, unless special protection means (access protection) is applied in access, Any base station, that is, any wireless communication router 102 can communicate freely. Therefore, the degree of freedom of movement of the terminal 104 is very high, that is, it is possible to perform wireless communication with the wireless communication router 102 existing in that area, regardless of the area in which the terminal 104 is moved. The wireless communication system having the above-described configuration is a network system that is very advantageous particularly for a terminal that is required to have high mobility, and can thereby receive a uniform and high-quality wireless communication service. In addition, the intensity of the radio wave 103 transmitted from one base station is in a wide range from several tens of meters to several hundreds of meters, and a single base station can cover a relatively wide area, and is a uniform wireless communication network service. Can be provided at low cost.

  In the wireless communication service system according to the conventional apparatus configuration, as described above, a uniformly inexpensive wireless network system can be constructed. However, when trying to provide wireless communication services of different communication methods for each area, various problems are raised due to costs, interference between base stations, and the like.

  Conventionally, it is necessary to arrange a wireless communication router (base station) so that the radio wave can cover the radio communication service area. Communication channel control by frequency control and optimal base station transmission power control are performed so that there is no reachable area.

  Further, consider the problem when the above-described wireless communication service system is applied to an example of an office layout created on one floor of a building as shown in FIG.

  In this office, rooms such as a reception room 201, a conference room 202, a training room 203, and a private room 204 are provided, and a wireless communication router 102 is disposed in the illustrated place in or near each room. The wired network 101 is not shown. A plurality of concentric circles 205 drawn around each of the four wireless communication routers 102 indicate an image of the distribution / arrival area of the radio wave 103 radiated from each wireless communication router 102. The radio wave 103 radiated from each wireless communication router 102 spreads so as to cover almost the entire area of each corresponding room. Therefore, if the terminal 104 is used in each room area, a wireless communication service can be received at any location.

  However, on the other hand, in the wireless communication system of the office described above, regarding the use of the wireless communication system, for example, the reception room 201 can be used at the customer's seat but cannot be used at the customer's seat, or the conference room 202 is specified. There is a demand to be able to use only the seats of the.

  Furthermore, there is a demand for controlling the wireless communication so that wireless communication is possible or impossible for each room in an office of a building that is not shielded.

  In the above case, in order to fully meet the above requirements, according to the conventional system, it is necessary to design a precise network system for wireless communication, which is very expensive. In addition, when the system has been laid once, when the office layout is changed, the system design must be basically reviewed and redesigned.

In response to the above request, conventionally, a place where the wireless communication service is disabled is shielded so that the radio wave does not reach, or an access key is set to provide access protection.
JP 2000-92050 A (Japanese Patent Application No. 11-203735)

  The object of the present invention is to construct a system for a wireless communication service in a limited area inside a building such as a building where a company office is located, and to easily install and design a base station portion for transmitting and receiving radio waves. In addition, it is possible to freely set the location of the radio wave transmission area and the size of the transmission area, and to set and select a place where wireless communication service can be performed in an inexpensive manner without using shielding technology or access protection technology The present invention proposes a technique capable of easily changing a system with a high degree of freedom in accordance with a change in conditions of a wireless communication service provider.

  In view of the above problems, an object of the present invention is to construct a wireless communication service system in a limited area such as a company office in a building, so that the installation design of a base station equivalent part can be easily performed, and a radio wave transmission area You can freely set the location and size of the site, set and select the location where the wireless communication service is available with an inexpensive method, and can change the system according to the conditions of the wireless communication service provider. It is an object of the present invention to provide a wireless communication area control device using a leaky coaxial cable that can be easily performed at a high degree.

  In order to achieve the above object, a wireless communication area control apparatus using a leaky coaxial cable according to the present invention is configured as follows.

  A first wireless communication area control device (corresponding to claim 1) connects at least one leaky coaxial cable formed with a plurality of radio wave leakage portions to a wired network for a wireless communication service, and Wiring is provided in the service providing area, and each of the plurality of radio wave leaking portions is formed corresponding to a narrow area in the service providing area.

  In the above wireless communication area control device, each of the plurality of radio wave leakage units is used as an antenna that radiates radio waves. The leaky coaxial cable is used as an antenna device having a plurality of antennas. The leak location where the radio wave leaking portion is provided can be formed at a free position in the leaky coaxial cable as a cut end. A radio communication service can be received by receiving the radio wave radiated from the radio wave leakage unit at the terminal. The coverage area of the radio wave radiated from the radio wave leakage portion can be set as a very narrow area. Since the radio wave leaking portion can be provided simply by forming a leaking location in the leaky coaxial cable, it is possible to make an indoor wireless LAN antenna device, that is, a base station equivalent portion by a simple method.

  In the first configuration, the second wireless communication area control device (corresponding to claim 2) is preferably characterized in that the narrow area coincides with the seat position. With this configuration, the narrow area is set, for example, in accordance with a seat where a person sits in one indoor service providing area.

  In the third wireless communication area control device (corresponding to claim 3), in each of the above configurations, the service providing area is preferably various rooms in the target building, and the leaky coaxial cable is wired to the corresponding room. It is characterized by that. With this configuration, an indoor wireless LAN can be constructed.

  In the fourth wireless communication area control device (corresponding to claim 4), in each of the above configurations, preferably, the leaky coaxial cable is a multi-core cable, and the position of each of the multi-core cables is shifted to a radio wave leakage portion. And a switch unit (RF switch) for selecting each of the multicore cables is provided, and a radio communication service is provided for each service narrow area by the radio wave leakage unit. By using a plurality of cables, the service area can be controlled in units of narrow areas.

  In the third configuration, the fifth wireless communication area control device (corresponding to claim 5) is preferably configured such that each of the plurality of leaky coaxial cables is connected to the wired network via the selection switch unit, Each of the providing areas is configured to provide a different wireless communication network service for each area.

  According to the present invention, in constructing an indoor wireless LAN, a portion corresponding to a base station is realized by a simple technique of using a leaked portion formed in a leaky coaxial cable, and a base station from which radio waves are radiated The radio wave coverage area by the part is a narrow area corresponding to one seat range. As a result, the base station part can be easily designed by building a wireless communication service system in a limited area such as a company office in the building, and the location and size of the radio wave transmission area can be set freely. It is possible to set and select a place where wireless communication service can be performed by an inexpensive method. Furthermore, the system can be easily changed with a high degree of freedom in accordance with the change in the condition of the wireless communication service provider.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments (examples) of the invention will be described with reference to the accompanying drawings.

  FIG. 1 is a plan view showing a cable wiring state of a wireless communication service system (indoor wireless LAN system) according to the present invention. Reference numeral 10 denotes an office of an arbitrary company in the building. In the layout of the office 10, various rooms such as a reception room 11, a conference room 12, a training room 13, and a private room 14 are provided. Leaky coaxial cables 21, 22, 23, and 24 are wired in the rooms 11 to 14 in the office 10 as indicated by broken lines. The leaky coaxial cable is a concept including a leaky coaxial tube according to the frequency used. Moreover, the wired network 31 shown with the dashed-dotted line is connected to each of the leaky coaxial cables 21-24. The wired network 31 is the same as the wired network described in the background section. Wiring of the leaky coaxial cables 21 to 24 is performed corresponding to the rooms 11 to 14 of the office 10, but the wiring of the wired network 31 is arbitrary. A communication control management device for executing a wireless communication service is connected to the wired network 31, but the illustration thereof is omitted in FIG. In addition, in order to receive a wireless communication service, a terminal that transmits and receives radio waves from the leakage degree axial cables 21 to 24 is required in each of the rooms 11 to 14. In FIG. 1, the terminal is not shown. The terminal is a desktop personal computer (PC) or a notebook type portable PC.

  The wiring state of the leaky coaxial cables 21 to 24 is determined according to each room.

  In the reception room 11, a table 31 is placed in the center, and four sofas (having three seats) 32 are placed around it. Accordingly, the leaky coaxial table 21 is wired so as to overlap with the respective seats of the four sofas 32.

  In the conference room 12, a large rectangular table 33 and a plurality of chairs 34 arranged around it are arranged. The leaky coaxial cable 22 is wired in such a manner as to connect the seat positions specified by the chair 34.

  In the training room 13, a plurality of long tables 35 and three chairs 36 corresponding to each table 35 are arranged. The leaky coaxial table 23 is wired so as to pass through the position of the portion corresponding to each seat corresponding to each table 35.

  In the private room 14, an office table 37 and a chair 38, a reception table 39, and two sofas 40 located on both sides thereof are arranged. Therefore, the leaky coaxial table 24 is wired so as to connect the seats of the office table 37 and the seats of the two sofas 40.

  As described above, the wiring of the leaky coaxial cables 21 to 24 is performed in a positional relationship such that the leaky coaxial cables 21 to 24 are connected in correspondence with the positions of the seats in the rooms 11 to 14. The installation positions of the leaky coaxial cables 21 to 24 are, on each floor, on the floor or inside thereof, or on the ceiling.

  FIG. 2 shows structural features of the leaky coaxial cables 21 to 24 described above. In the leaky coaxial cables 21 to 24, a plurality of leak locations (radio wave leaking portions) 25 are provided at predetermined locations. A leaky coaxial cable is made by forming a cut end from which a radio wave is radiated at a necessary position with respect to a normal coaxial cable. The cut end becomes the leakage portion 25. One end of each of the leaky coaxial cables 21 to 24 is connected to the wired network 31 through the amplifier 26 corresponding to the used frequency band as described above.

  In the leaky coaxial cables 21 to 24, the radio waves 27 leak from each of the plurality of leak locations 25, and signals and the like can be transmitted and received using these leaked radio waves 27. In other words, the leakage coaxial cable 21 to 24 is used as a transmission / reception antenna device when the leakage point 25 where the radio wave 27 is leaked is viewed as an antenna. In the leaky coaxial cables 21 to 24, by providing a plurality of leakage points 25, it is possible to create an area for transmitting and receiving radio waves in a very narrow area for each of the plurality of leakage points 25. In principle, this area is a very narrow area (narrow area) corresponding to the seats in the sofas and chairs in the rooms 11 to 14 described above. In this way, by using the leaky coaxial cables 21 to 24, the transmission / reception access unit can be divided into a plurality of narrow areas in the rooms 11 to 14 which are service providing areas. Leaked coaxial cables 21 to 24 have a plurality of leaked portions 25 that are regarded as a plurality of antennas, and are laid on the floor of each room (service provision area) to further set a narrow area corresponding to each seat. In this narrow area, the wireless communication service can be used. On the contrary, even if the leaky coaxial cable is laid, if the leak location 25 is not formed, the wireless communication service cannot be received. As described above, it is possible to perform control management of a narrow area where a wireless communication service can be received using the leaky coaxial cables 21 to 24.

  In the layouts of the rooms 11 to 14 in the office 10 shown in FIG. 1, the wireless communication service is performed only at the seat points. A cut end, which is a leakage location 25 of the leaky coaxial cables 21 to 24, is formed in accordance with the wireless communication point (each seat).

  In consideration of future changes in the office layout, uniform service area units may be set to arrange the leakage points.

  Furthermore, according to the wireless communication area control apparatus using the above-described leaky coaxial cable, for example, when the office layout is changed in the future, it is possible to easily cope with the change of the location of the leaky coaxial cable and the location of the leaky place.

  FIG. 3 shows an example using a leaky coaxial cable having another configuration. The leaky coaxial cable 51 is a multi-core flat leaky coaxial cable. In the illustrated example, the leaky coaxial cable includes five cores (coaxial cable elements). In the leaky coaxial cable 51, the leaked portions 25 are formed at different positions in each of the five coaxial cable elements 51a, 51b, 51c, 51d, and 51e. An amplifier 26 is connected to each of the five coaxial cable elements 51 a to 51 e, and further connected to an external wired network via an RF switch / control unit 52 and a router 53. A user registration / detection unit 54 is attached to the RF switch / control unit 52. According to the leaky coaxial cable 51 described above, control by individual wireless communication is performed by using a different cable element in a narrow area unit corresponding to each leak point 25 in a specific predetermined wide service area. Can do. In other words, the user registration / detection unit 54 detects a user (identified by an address or the like) registered in advance, and provides the wireless communication network service only to the area where the user exists. Thus, it is suitable for performing individual wireless communication control for each narrow area unit.

  In the configuration of FIG. 3, as an example, individual wireless communication is performed between the mobile terminal 55 and the coaxial cable element 51 a using the radio wave 56 from the leakage point 25. The coaxial cable element 51a can individually receive a wireless communication service through the corresponding amplifier (or filter) 26 and the RF switch / control unit 52 and through the router 53 to the outside. In this case, only a specific user who uses the portable terminal 55 receives an individual wireless communication service, and other users are not involved. Further, by adding a user registration / detection unit 54, only a user registered in advance is detected, and a wireless communication service is provided only to a narrow area where the user exists.

  FIG. 4 shows an embodiment for providing a wireless communication service to a specific area. In this embodiment, the service provision area is the office 10 described in FIG. 4, the same elements as those described in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted here. In this embodiment, a system that sets a plurality of specific areas in the office 10 and provides different network services to the specific areas is constructed.

  That is, as shown in FIG. 4, a leaky coaxial cable 61 that provides public network service is wired in the area of the reception room 11, and a leaky coaxial cable that provides in-house network service is provided in the areas of the conference room 12 and the private room 14. 62 is wired, and in the area of the training room 13, a leaky coaxial cable 63 for providing a network service for training is wired. The leaky coaxial cables 61 to 63 are all connected to the RF switch 64. As described above, a different wireless communication network service can be provided for each specific area by routing different leaky coaxial cables 61 to 63 for each service area.

  The present invention is used to construct an indoor LAN such as a company office in a building with a simple configuration and selectively limit and set a wireless communication service in a narrow area around the seat.

It is a top view of the service provision area where the radio | wireless communication area control apparatus which concerns on this invention was attached. It is an external view which shows the principal part of the leaky coaxial cable used with the radio | wireless communication area control apparatus which concerns on this invention. It is a figure which shows an example of the utilization form of the leaky coaxial cable of a multi-core structure. It is a figure similar to FIG. 1 for demonstrating other embodiment of the wireless communication area control apparatus which concerns on this invention. It is explanatory drawing which shows the general structure of the base station of the conventional indoor wireless LAN. It is explanatory drawing which shows the problem of the base station of the conventional indoor wireless LAN.

Explanation of symbols

10 Office 11 Reception Room 12 Conference Room 13 Training Room 14 Private Room 21-24 Leakage Coaxial Cable 25 Leakage Location (Radio Wave Leakage)
27 Radio 31 Wired network

Claims (5)

  Connecting at least one leaky coaxial cable formed with a plurality of radio wave leakage portions to a wired network for wireless communication service, wiring the leaky coaxial cable to a service providing area, each of the plurality of radio wave leakage portions being A wireless communication area control device using a leaky coaxial cable, characterized by being formed corresponding to a narrow area in a service providing area.   The wireless communication area control apparatus using a leaky coaxial cable according to claim 1, wherein the narrow area coincides with a seat position.   3. The wireless communication area control using a leaky coaxial cable according to claim 1, wherein the service providing area is various rooms in a target building, and the leaky coaxial cable is wired to the corresponding room. apparatus.   The leaky coaxial cable is a multi-core cable, and is provided with switch means for selecting each of the multi-core cables as well as forming the radio wave leak section by shifting the position of each of the multi-core cables. The wireless communication area control device using a leaky coaxial cable according to any one of claims 1 to 3, wherein the wireless communication service is provided in units of narrow areas. The plurality of leaky coaxial cables are connected to the wired network via a selection switch unit, and different wireless communication network services are provided for each of the plurality of service providing areas. A wireless communication area control device using the leaky coaxial cable according to 3.

Images