JP2005323219A - Radio communication apparatus and radio communication network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve throughput and to guarantee the real-time property of transmission data in an ad hoc radio communication network. <P>SOLUTION: In a radio communication system including a plurality of base transceiver station equipment (BTSs) and a plurality of portable terminal apparatus capable of wirelessly communicating with the BTSs, each BTS includes a plurality of radio communication units each of which is provided with an antenna having directivity and performs radio communication with the other BTS existing in the vicinity of the BTS itself by using one of the radio communication units. The BTS is provided with an another BTS searching means for searching another BTS and generating a search information signal and a direction information signal, a radio unit control means for selecting an unused unit from the plurality of radio communication units on the basis of the search information signal and transmitting/receiving data to/from the other searched BTS through the selected unit and a directivity control means for controlling the directivity of the antenna installed in the selected radio communication unit to the direction of the other searched BTS. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wireless communication network including a plurality of wireless access point devices (hereinafter simply referred to as “AP devices”) that relay and control communication between a plurality of mobile station devices (hereinafter simply referred to as “ST devices”). The present invention relates to a system and a portable AP device that can be easily moved and set up.

  Conventionally, a plurality of portable AP devices that relay and control communication between a plurality of ST devices are provided, and these AP devices form an autonomous network, so-called ad hoc (temporary / temporary) As such a wireless communication network, for example, a wireless communication network system as disclosed in Patent Document 1 is known.

  In this prior art, an AP-ST wireless processing unit responsible for wireless communication processing between the AP device and the ST device and an AP-AP wireless processing unit responsible for wireless communication processing between the AP devices are separately provided. As these wireless processing units, for example, a wireless LAN system of the IEEE 802.11 standard is adopted. In this case, a wireless communication channel according to the IEEE 802.11 standard is fixedly set between the AP device and the ST device or between the AP devices.

  However, in such a wireless communication network system, generally, a large amount of communication data coming from the ST device in the lower layer is congested on the communication path between AP devices in the upper layer of the network. For this reason, when a wireless processing unit having the same communication capacity between AP-ST and AP-AP is fixedly set as in the prior art, the communication capacity between AP devices becomes a bottleneck, and between ST devices in the system There arises a problem that the execution throughput of the end-to-end communication is reduced.

Further, when a wireless LAN system conforming to the IEEE 802.11 standard is adopted, multi-access control (MAC) in the system is executed by a CSMA method which is an autonomous distributed medium access control method. Therefore, it is difficult to ensure the quality of service (QoS) of the wireless communication link when transmitting data that requires real-time properties such as video and audio.
JP 2003-333053 A

  The present invention has been made to solve such a problem, and in an ad hoc wireless communication network, improves the efficiency of throughput in data communication and guarantees the real-time property of transmission data. And a wireless communication network system.

  The present invention includes a plurality of wireless communication units including antennas having directivity, and wirelessly transmits data to and from other station devices existing in the vicinity of the own station via one of the plurality of wireless communication units. A wireless communication apparatus for performing transmission and reception, wherein the other station apparatus detects the other station apparatus and generates a detection information signal and a direction information signal related to the detected other station apparatus, and based on the detection information signal A wireless unit control means for selecting an unused unit from a plurality of wireless communication units and transmitting / receiving data to / from the detected other station device via the selected wireless communication unit; Directivity adjustment means for adjusting the directivity of the antenna included in the selected wireless communication unit along the direction of the detected other station apparatus based on a direction information signal. The features.

  The present invention is also a wireless communication network system including a plurality of wireless relay devices and a plurality of portable terminal devices that perform wireless data transmission / reception with each of the wireless relay devices, wherein the wireless relay device is oriented. Including a plurality of wireless communication units having antennas, and wirelessly transmitting / receiving data to / from other wireless relay devices in the vicinity of the local station via one of the plurality of wireless communication units Detecting the other wireless relay device and generating a detection information signal and a direction information signal related to the detected other wireless relay device, and the plurality of wireless communication units based on the detection information signal An unused unit is selected from among the selected wireless communication units, and data is transmitted / received to / from the detected other wireless relay device via the selected wireless communication unit. Unit control means, and directivity adjustment means for adjusting the directivity of the antenna included in the selected wireless communication unit based on the direction information signal so as to be along the direction of the detected other wireless relay device; It is characterized by including.

  FIG. 1 is a system configuration diagram showing a wireless communication network according to an embodiment of the present invention.

  In the figure, AP devices 10a to 10c are AP devices that relay data from each ST device existing in the system. Each of these AP apparatuses includes, for example, a moving unit such as a wheel, and is mounted on portable stands 20a to 20c that include adjusting means such as the ground height and antenna directivity of the AP apparatus. Each of these portable stands has a built-in battery, and the AP device mounted on each stand is operated by electric power supplied from the battery. In addition, each AP device can be operated by electric power supplied from a commercial power source by connecting a power cord to an AC 100 V commercial power outlet.

  Each of the AP devices 10a to 10c includes a station communication control unit 17 to be described later, and can perform wireless communication with each ST device in the service area determined by conditions such as transmission power and antenna directivity. In this embodiment, the AP device 10a performs wireless communication with the ST devices 31 and 32, the AP device 10b with the ST devices 33 and 34, and the AP device 10c with the ST device 35, respectively.

  Each AP device includes a wired LAN communication control unit 16 to be described later, and can perform wired communication with a predetermined wired LAN. In this embodiment, only the AP 10a is connected to the wired LAN 40.

  Further, each AP device includes a plurality of inter-AP communication control units 14 (channel 1 to channel n), and wirelessly communicates with other AP devices via one channel of the inter-AP communication control unit 14. Communication can be performed. In this embodiment, it is assumed that the AP device 10a can perform wireless communication with 10b, the AP device 10b with 10a and 10c, and the AP device 10c with 10b.

  On the other hand, each of the ST devices 31 to 35 is, for example, a portable terminal device such as a personal computer or a handy terminal equipped with a wireless communication unit of the IEEE 802.11 standard, and an AP device that supports a service area to which each ST device belongs. Wireless communication can be performed. Needless to say, the system configuration according to the present invention, the number of AP devices and ST devices included in the system, and various conditions such as the arrangement of the devices are not limited to the example shown in FIG.

  Next, the internal configuration of the AP apparatus shown in FIG. 1 will be described based on the block diagram of FIG.

  In FIG. 2, the other station AP detection unit 11 is connected to the inter-AP network control unit 12, detects the presence of the other station AP device around the own station, and acquires direction information about the detected AP device. It has a function. The acquired direction information is supplied from the other station AP detection unit 11 to the inter-AP network control unit 12.

  The inter-AP network control unit 12 is connected to each of the antenna directivity control unit 13, the plurality of inter-AP communication control units 14, and the communication path control unit 15. The inter-AP network control unit 12 supplies antenna directivity control information to the antenna directivity control unit 13, exchanges MAC control information and connection information with a plurality of inter-AP communication control units 14, and further performs communication. This is a part for supplying connection information to the route control unit 15.

  The antenna directivity control unit 13 is connected to the directivity antenna unit 145 inside each inter-AP communication control unit 14 and controls each inter-AP communication based on the directivity control information acquired from the inter-AP network control unit 12. This is a part for controlling the directivity of the directional antenna unit 145 included in the unit 14.

  Next, the configuration of the inter-AP communication control unit 14 will be described. As shown in FIG. 2, each of the inter-AP communication control unit 14 includes a MAC control unit 140, a link establishment MAC unit 141, a data communication MAC unit 142, a modem unit 143, an RF unit 144, and a directional antenna unit 145. It has.

  The MAC control unit 140 starts its operation based on the MAC control information acquired from the inter-AP network control unit 12. This is connected to the link establishment MAC unit 141 when a data communication link, which will be described later, is established, and connected to the data communication MAC unit 142 after the data communication link is established, and controls MAC control at each time point. Further, the MAC control unit 140 exchanges data signals with the communication path control unit 15 and the modem unit 143, and exchanges connection information with the above-described network control unit 12 between APs.

  The link establishing MAC unit 141 is a part that manages transmission and reception of data when establishing a communication link, using a so-called autonomous distributed medium access control method. The data communication MAC unit 142 is a part that manages transmission / reception of data after establishing a communication link by using a so-called centralized control type medium access control method.

  The modem 143 is a part that performs a predetermined modulation process on the transmission signal supplied from the MAC controller 140 and outputs the modulated signal to the RF unit 144. The RF unit 144 is a part that converts the transmission signal supplied from the modulation / demodulation unit 143 into a high-frequency signal in the transmission radio frequency band and outputs the signal to the directional antenna unit 145. The directional antenna unit 145 is a part that radiates a high-frequency signal supplied from the RF unit 144 into the air via an antenna having a predetermined directivity.

  On the other hand, the directional antenna unit 145 outputs the received high frequency signal to the RF unit 144, and the RF unit 144 converts the high frequency signal into a frequency band that can be demodulated by the modem unit 143, and supplies this to the modem unit 143. To do. The modem unit 143 performs predetermined demodulation processing on the received signal supplied from the RF unit 144 to generate a demodulated signal, and outputs the demodulated signal to the MAC control unit 140.

  Note that various schemes can be applied to the configurations and operations of the modem unit 143 and the RF unit 144, and in the present invention, detailed description of such components is omitted.

  The wired LAN communication control unit 16 is connected to the communication path control unit 15 and the wired LAN 40 outside the AP device. The wired LAN communication control unit 16 receives all data frames flowing through the wired LAN 40 and outputs them to the communication path control unit 15. Part. The wired LAN communication control unit 16 transmits the transmission data output from the communication path control unit 15 to the wired LAN 40 according to a predetermined communication protocol.

  The communication path control unit 15 is connected to the inter-AP network control unit 12, the wired LAN communication control unit 16, the station communication control unit 17, and a plurality of inter-AP communication control units 14 (CH1 to CHn). The communication path control unit 15 creates a path control table based on the connection information from the inter-AP network control unit 12 and the transmission source ID information included in the input data from the wired LAN communication control unit 16 and the station communication control unit 17. This is the part to be generated. In addition, the communication path control unit 15 transmits the transmission destination ID included in the input data from the wired LAN communication control unit 16, the station communication control unit 17, and each of the inter-AP communication control units 14 based on the generated path control table. With reference to the information, the input data is transmitted to any one of the wired LAN communication control unit 16, the station communication control unit 17, and the inter-AP communication control unit 14.

  Next, in the network system shown in FIG. 1, the operation from when the AP device 10c is turned on until data communication is started with the adjacent AP device 10b will be described. It is assumed that a data communication link has already been established between the AP devices 10a and 10b before the power-on of 10c.

  In each AP device, the other station AP detection unit 11 detects other AP devices that can communicate with each other in the system at all times or at predetermined intervals, and the direction information of the detected other AP devices. Is supplied to the inter-AP network control unit 12. Incidentally, as a method for the other station AP detection unit 11 to acquire direction information related to another AP device, for example, the arrival direction of the received radio wave may be estimated using an array antenna. For detection of other AP apparatuses, radio waves in a frequency band different from the frequency band used by each of the plurality of inter-AP communication control units 14 are used.

  In the system of FIG. 1, when the power supply of the AP device 10 c is turned on, the AP device 10 b and the inter-AP network control unit 12 of each of the 10 c data communication links based on the direction information from the other station AP detection unit 11. Recognize the appearance of another AP device that has not been established. Then, an unused inter-AP communication control unit 14 is selected from a plurality of inter-AP communication control units 14 (CH1 to CHn) built in each AP device, and the directivity included in the inter-AP communication control unit 14 is selected. The directivity of the antenna unit 145 is controlled in the direction indicated by the direction information. Incidentally, the directivity control may be performed by, for example, driving the installation direction of the directional antenna by a mechanical servo mechanism, or the directivity may be controlled by electronic control like an adaptive array antenna. May be controlled.

  After the above directivity control is performed, each of the AP devices 10b and 10c operates the MAC control unit 140 in the inter-AP communication control unit 14 to establish a data communication link and exchange connection information. Let it run. An example of an operation sequence when establishing a data communication link and exchanging connection information will be described with reference to the sequence chart of FIG.

  In FIG. 3, both the AP devices 10b and 10c first execute a communication operation for establishing a data communication link. At this time, in the communication control unit 14 between the APs, the autonomous distributed medium access control method in the link establishing MAC unit 141 is activated.

  In the autonomous decentralized medium access control method, for example, carrier sense (CS) is performed according to the CSMA (Carrier Sense Multiple Access) method, and if the result is idle, that is, there is no carrier collision, a link is established from the AP device 10b. A request frame is transmitted (step S01).

  In the example of FIG. 3, the AP apparatus 10b transmits the link establishment request frame first, but the 10c side may transmit the link establishment request frame. In addition, an arrow CS in the figure represents a carrier sensing event.

  The link establishment request frame is a frame in which the transmission source AP apparatus notifies its own ID number and the like to the AP apparatus that has received the frame, and the transmission source address is the self ID and the transmission destination address is the broadcast ID. Superimpose on the frame and transmit. Needless to say, a unique ID number is set in advance for each AP device in the network system.

  Further, in this embodiment, an operation example in the case of using the CSMA method is shown, but other autonomous distributed medium access control methods, for example, a control method such as a slot Aloha method can be applied.

  When the AP apparatus 10c receives the link establishment request frame transmitted by the AP apparatus 10b in step S01 of FIG. 3, the 10c transmits a link establishment response frame to 10b after executing a predetermined process such as CS (step S01). S02). The link establishment response frame is a frame for informing the transmission source of the received link establishment request frame of its own ID number. In other words, the AP device 10c transmits the transmission source address as a self ID (10c) and the transmission destination address as the transmission source ID (10b) of the link establishment request frame, superimposed on the frame.

  When the AP apparatus 10b receives the link establishment response frame transmitted by the AP apparatus 10c in step S02, the AP apparatus 10b performs a predetermined process and then transmits an ACK frame to the AP apparatus 10c (step S03). The ACK frame is a frame for notifying the AP apparatus 10c that the AP apparatus 10b has normally received the link establishment response frame, the transmission source address is the self ID (10b), and the transmission destination address is the transmission source of the link establishment response frame. It is transmitted as ID (10c).

  In addition, when any of the link establishment request frame, the link establishment response frame, and the ACK frame in steps S01 to S03 described above cannot be normally received in any of the AP apparatuses, after a predetermined random time has elapsed. The operation sequence is repeated again from the transmission procedure of the link establishment request frame.

  After transmitting the ACK frame in step S03, the AP apparatus 10b confirms the presence / absence of a reception signal from another AP apparatus for a predetermined standby time. Similarly, the AP device 10c also confirms the presence / absence of a reception signal from another AP device for a predetermined waiting time after receiving the ACK frame.

  Then, in both AP devices, if there is no signal received from another AP device during the waiting time, the connection information request frame (step S04) is performed in accordance with the same sequence as the above steps S01 to S03. The transmission / reception operation of the connection information response frame (step S05) and the ACK frame (step S06) is performed between both AP apparatuses. Incidentally, the connection information request frame and the connection information response frame are frames for informing the other AP device of the contents of the route control table of the communication route control unit 15 of both AP devices.

  That is, the connection information request frame transmitted from the AP apparatus 10b to the 10c is connected to the ID numbers of the ST apparatuses 33 and 34 connected to the AP apparatus 10b, the ID number of the AP apparatus 10a, and the AP apparatus 10a. The ID numbers of the ST devices 31 and 32 are included. On the other hand, the connection information response frame transmitted from the AP apparatus 10c to 10b includes the ID number of the ST apparatus 35 connected to the AP apparatus 10c.

  When the AP apparatus 10c receives the connection information request frame from 10b in step S04, the AP apparatus 10c updates the contents of the path control table included in the communication path control unit 15 in the apparatus. Similarly, when the AP device 10b receives the connection information response frame from 10c in step S05, the AP device 10b updates the content of the route control table of the communication route control unit 15, and further updates the content of the route control table. The included connection information is transmitted to the AP device 10a.

  Incidentally, the transmission to the AP device 10a is performed according to the centralized control type medium access control method because the data communication link has already been established between both 10a and 10b. Needless to say, when the AP device 10a receives the connection information from 10b, the AP device 10a updates the contents of the route control table of the communication route control unit 15 in the device.

  In step S06, the AP device 10b confirms the presence or absence of a received signal from another AP device for a predetermined waiting time after transmitting the ACK frame for the connection information response frame from 10c. Similarly, after receiving the ACK frame, the AP device 10c also checks the presence / absence of a reception signal from another AP device for a predetermined waiting time.

  When there is no signal received from another AP device even during the waiting time, the inter-AP communication control unit 14 of each of the AP devices 10b and 10c determines the operation of the MAC control unit 140 as a data communication MAC unit. 142 is switched to the centralized control type medium access method. When the data transmission method between the AP apparatuses 10b and 10c is switched to the centralized control type medium access method, data frames are transmitted and received between them in accordance with a predetermined data communication procedure (steps S07 to S08). .

  When the control is switched to the centralized control medium access method, the AP device operates as a so-called main station (base station) that manages the data communication timing in the system, or communicates under the control of the main station. It is determined whether to operate as a so-called slave station (slave station) that performs processing. Incidentally, this determination is performed based on connection information transmitted and received by the inter-AP network control unit 12 in the data communication procedure using the autonomous distributed access control method when establishing the data communication link.

  By using directional antennas between the AP devices 10a and 10b and between the AP devices 10b and 10c, the radio wave arrival ranges in the system are spatially divided. Therefore, data communication using the same frequency band can be performed in parallel between the AP devices 10a and 10b and between the AP devices 10b and 10c.

  Similarly, between the AP device and the ST device, the station communication control unit 17 of each AP device and each of the ST devices 31 to 35 use directional antennas, thereby communicating between the AP device and each ST device. However, it is possible to spatially divide each other's radio wave reach so as not to interfere with communication between AP devices. As a result, the same frequency band as that between the AP devices can be used for communication between the AP device and the ST device.

  On the other hand, if radio waves in a frequency band different from the frequency band used for communication between AP devices are used for communication between the AP device and the ST device, the radio wave reachable range in the system is not divided. Interference in mutual communication can be reduced. In addition, as a frequency band used for communication between AP devices, for example, a millimeter wave band having a wide frequency band is used, and a use frequency of communication between AP devices is higher than a use frequency band of communication between the AP device and the ST device. By allocating a wide band, it is possible to increase the former transmission rate more than the latter.

  As described above, according to the present invention, the other station AP detection unit that detects the presence of another AP device around its own station and obtains its direction information, and the directional antenna used for communication between the AP devices. A plurality of inter-AP communication control units including an RF unit, an RF unit, a modem unit, and a MAC control unit, and a different inter-AP communication control unit for other AP devices existing in the direction detected by the other station AP detection unit. Allocate and perform communication processing.

  As a result, each of the plurality of inter-AP communication control units provided can operate asynchronously and perform data communication with different AP devices, thereby increasing the maximum transmission capacity of the entire network system. In addition, by using a directional antenna for communication between AP devices, space division in the network system is facilitated, and the same frequency band can be used simultaneously in different directions. Further, the different station AP detection processing and the communication processing between AP devices can be performed by differentiating the use frequency band between the detection processing by the other station AP detection unit and the communication processing between the AP devices by the inter-AP communication control unit. Since it can be executed asynchronously, the throughput of communication between AP devices is improved.

  Further, according to the present invention, communication processing is performed using an autonomous distributed medium access control method when establishing a data communication link, and once the data communication link is established, the communication method is changed to a centralized control type medium access. Switch to the control method.

  Therefore, by assigning a unique ID number to each AP device in the system in advance, it is possible to autonomously form a network between AP devices when a data communication link is established. It is also easy to enter new AP devices. In addition, it becomes easy to quickly recognize the AP device that has left the network system after the data communication link is established. Furthermore, even after the data communication link is established, data communication processing with higher throughput efficiency can be performed as compared with the conventional system using the autonomous distributed medium access control method. In addition, it is easy to secure a use band for data requiring real-time properties such as voice and video, and a predetermined QoS representing the system service quality can be secured.

  Furthermore, in the present invention, in the portable stand on which the AP device is mounted, the ground height of the AP device and its directivity can be easily adjusted, and its movement and installation can be performed very easily.

  This makes it extremely easy to move and set up the system when configuring a temporary ad hoc network that uses the communication / relay function of the AP device. In addition, each AP device has a function of automatically detecting other AP devices existing in the surrounding area and automatically adjusting its directional antenna to supplement the other AP devices existing in the surrounding area. Adjustment processing at the time of network setup is also extremely simple.

  In the embodiment described above, radio waves are used as a wireless communication medium between AP devices or between ST devices. However, the present invention is not limited to such a case, and as a wireless communication medium, for example, infrared It is good also as a structure using light, such as. Alternatively, the wireless communication medium may be configured to use a combination of light and radio waves.

FIG. 1 is a system configuration diagram showing a wireless communication network according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the access point apparatus in the system of FIG. FIG. 3 is a sequence chart showing a state of data transmission between access point devices in the system of FIG.

Explanation of symbols

10a to c Access point device 11 Other station AP detection unit 12 Inter-AP network control unit 13 Antenna directivity control unit 14 Inter-AP communication control unit 15 Communication path control unit 16 Wired LAN communication control unit 17 Station communication control unit 20a-c Yes Portable stand 31-35 Mobile station device 40 Wired LAN
140 MAC Control Unit 141 Link Establishment MAC Unit 142 Data Communication MAC Unit 143 Modulation / Demodulation Unit 144 RF Unit 145 Directional Antenna Unit

Claims (12)

A radio that includes a plurality of radio communication units including antennas having directivity, and that performs wireless data transmission and reception with other station devices in the vicinity of the local station via one of the plurality of radio communication units. A communication device,
Other station detection means for detecting the other station device and generating a detection information signal and a direction information signal related to the detected other station device;
Based on the detection information signal, an unused unit is selected from the plurality of wireless communication units, and data is transmitted / received to / from the detected other station device via the selected wireless communication unit. A wireless unit control means,
Directivity adjustment means for adjusting the directivity of the antenna included in the selected wireless communication unit based on the direction information signal so as to follow the direction of the detected other station apparatus, Wireless communication device.   The wireless communication unit is a communication procedure control means for changing a control mode of a communication control procedure in data transmission / reception before and after establishment of a data communication link when wirelessly transmitting / receiving data to / from the other station device. The wireless communication apparatus according to claim 1, further comprising:   The communication procedure control means establishes a data communication link based on an autonomous distributed control mode, and transmits / receives data based on a centralized control type control mode after the establishment of the data communication link. The wireless communication apparatus according to claim 2.   The said other station detection means uses the frequency of a different band from the frequency band which these radio | wireless communication units use when producing | generating the said detection information signal and a direction information signal. Wireless communication device.   The radio according to any one of claims 1 to 4, wherein the antenna can freely adjust its ground height and directivity, and the wireless communication device can be easily moved and installed. Communication device. A wireless communication network system including a plurality of wireless relay devices and a plurality of portable terminal devices that perform wireless data transmission and reception with each of the wireless relay devices,
The wireless relay device is
Including a plurality of wireless communication units having antennas having directivity, and transmitting and receiving data wirelessly to and from another wireless relay device existing in the vicinity of the own station via one of the plurality of wireless communication units Done
Other device detection means for detecting the other wireless relay device and generating a detection information signal and a direction information signal related to the detected other wireless relay device;
Based on the detection information signal, an unused unit is selected from the plurality of wireless communication units, and data is exchanged with the other wireless relay devices detected via the selected wireless communication unit. Wireless unit control means for performing transmission and reception;
Directivity adjustment means for adjusting the directivity of the antenna included in the selected wireless communication unit based on the direction information signal so as to be along the direction of the detected other wireless relay device. A featured wireless communication network system.   The wireless communication unit includes a communication procedure control means for changing a control mode of a communication control procedure at the time of data transmission / reception before and after the establishment of a data communication link when transmitting / receiving data to / from another wireless relay device. The wireless communication network system according to claim 6, further comprising:   The communication procedure control means establishes a data communication link based on an autonomous distributed control mode, and transmits / receives data based on a centralized control type control mode after the establishment of the data communication link. The wireless communication network system according to claim 7.   The wireless relay device communicates connection information including an identifier for identifying each device between a mobile terminal device and another wireless relay device that can communicate to generate a data path control table based on the connection information. 7. The wireless communication network system according to claim 6, further comprising relay control means for performing relay control of transmission / reception data from each of the devices based on the data path control table.   The other device detecting means generates a detection information signal and a direction information signal related to another wireless relay device, and a frequency band used by the plurality of wireless communication units, and between the wireless relay device and the mobile terminal device. The wireless communication network system according to claim 6, wherein a frequency in a band different from a frequency band used in between is used.   11. The radio according to claim 10, wherein a frequency band of radio waves used between the radio relay apparatuses is wider than a frequency band used between the radio relay apparatus and the portable terminal apparatus. Communication network system. The radio communication network system according to claim 11, wherein a frequency band of radio waves used between the radio relay apparatuses is a millimeter wave or quasi-millimeter wave frequency band.

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