JP5864471B2 - Radio communication system, radio communication method, radio base station apparatus, and remote control apparatus - Google Patents

Radio communication system, radio communication method, radio base station apparatus, and remote control apparatus Download PDF

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JP5864471B2
JP5864471B2 JP2013086025A JP2013086025A JP5864471B2 JP 5864471 B2 JP5864471 B2 JP 5864471B2 JP 2013086025 A JP2013086025 A JP 2013086025A JP 2013086025 A JP2013086025 A JP 2013086025A JP 5864471 B2 JP5864471 B2 JP 5864471B2
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朋浩 徳安
朋浩 徳安
名倉　正光
正光 名倉
衆太 上野
衆太 上野
中村　宏之
宏之 中村
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Nippon Telegraph and Telephone Corp
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Description

本発明は、それぞれの通信エリアの一部が重なる２つの無線基地局装置の一方に接続する無線端末装置を増設するときに、干渉回避のために例えば40ＭHz帯域幅の広帯域モードから例えば20ＭHz帯域幅の狭帯域モードへの切り替えを自動的に行う無線通信システム、無線通信方法、無線基地局装置および遠隔制御装置に関する。   The present invention provides, for example, a 20 MHz bandwidth from a wideband mode of 40 MHz bandwidth, for example, in order to avoid interference when adding a wireless terminal device connected to one of two wireless base station devices that overlap each other in their communication areas. The present invention relates to a wireless communication system, a wireless communication method, a wireless base station device, and a remote control device that automatically switch to a narrowband mode.

無線ＬＡＮの標準規格であるＩＥＥＥ８０２．１１ｎ（非特許文献１）では、通信容量を増大するために伝送路を広帯域化する手段として、20ＭHz帯域幅を40ＭHz帯域幅に拡大するチャネル・ボンディング技術が規定されている。これは、隣接する２つの20ＭHzチャネルを結合して連続的に使用し、２つの20ＭHzチャネルの境界に位置するガードバンド内の未使用のサブキャリアも利用可能にして、実質的に２倍以上の伝送速度を実現する技術である。   IEEE802.11n (Non-patent Document 1), a wireless LAN standard, defines a channel bonding technology that expands the 20 MHz bandwidth to the 40 MHz bandwidth as a means to widen the transmission path in order to increase the communication capacity. Has been. This is a combination of two adjacent 20 MHz channels that are used continuously and unused subcarriers in the guard band located at the boundary of the two 20 MHz channels are also available, substantially more than twice as much. This technology realizes transmission speed.

このような無線通信システムにおいて、それぞれの通信エリアの一部が重なる一方の無線基地局装置が広帯域モードで通信中に、他方の無線基地局装置に接続する無線端末装置を増設する際に、互いに干渉するときの対処方法が課題となる。   In such a radio communication system, when one radio base station apparatus that overlaps a part of each communication area is communicating in the broadband mode, when adding radio terminal apparatuses connected to the other radio base station apparatus, How to deal with interference is an issue.

図６(a) は、狭帯域モードと広帯域モードに対応可能な無線基地局装置（▲，△）が通信エリアの一部が重なって隣接し、一方の無線基地局装置（▲）が既存の無線端末装置（●）と広帯域モード（Ｗ）で通信を行っている。このとき、他方の無線基地局装置（△）に接続する新規の無線端末装置（○）を増設するときに、次のようなケースが考えられる。なお、隣接する無線基地局装置は、互いの通信エリアの外にあるものとする。   In FIG. 6 (a), radio base station apparatuses (▲, Δ) that can support the narrowband mode and the wideband mode are adjacent to each other with part of the communication area overlapping, and one radio base station apparatus (▲) is an existing one. Communication is performed with a wireless terminal device (●) in a broadband mode (W). At this time, when a new wireless terminal device (◯) connected to the other wireless base station device (Δ) is added, the following cases can be considered. It is assumed that adjacent radio base station apparatuses are outside the communication area of each other.

図６(b) は、一方の無線基地局装置（▲）と通信する既存の無線端末装置（●）と、他方の無線基地局装置（△）と通信する新規の無線端末装置（○）が、互いの通信エリアの外にあるケースである。この場合、一方の無線基地局装置（▲）と既存の無線端末装置（●）との間の広帯域モードの通信と、他方の無線基地局装置（△）と新規の無線端末装置（○）との間の広帯域モードの通信は互いに干渉しないため、それぞれで広帯域モード（Ｗ）の通信が可能である。   FIG. 6B shows an existing wireless terminal device (●) that communicates with one wireless base station device (▲) and a new wireless terminal device (◯) that communicates with the other wireless base station device (△). This is a case outside the communication area of each other. In this case, wideband mode communication between one radio base station apparatus (▲) and an existing radio terminal apparatus (●), and the other radio base station apparatus (△) and a new radio terminal apparatus (◯) Since broadband mode communication between the two does not interfere with each other, broadband mode (W) communication is possible in each.

図６(c) は、一方の無線基地局装置（▲）と通信する既存の無線端末装置（●）が、隣接する無線基地局装置（▲，△）の通信エリアが重なる位置にあり、他方の無線基地局装置（△）と通信しようとする新規の無線端末装置（○）が、一方の無線基地局装置（▲）の通信エリアの外にあるケースである。この場合、既存の無線端末装置（●）から一方の無線基地局装置（▲）に送信される信号が他方の無線基地局装置（△）に対して干渉となり、他方の無線基地局装置（△）から新規の無線端末装置（○）に送信される信号が既存の無線端末装置（●）の干渉となり、このままでは両方で広帯域モードの通信ができないので何らかの制御が必要になる。   FIG. 6 (c) shows that an existing wireless terminal device (●) communicating with one wireless base station device (▲) is in a position where communication areas of adjacent wireless base station devices (▲, △) overlap. In this case, a new wireless terminal device (◯) trying to communicate with the other wireless base station device (Δ) is outside the communication area of one of the wireless base station devices (▲). In this case, a signal transmitted from the existing wireless terminal device (●) to one wireless base station device (▲) interferes with the other wireless base station device (△), and the other wireless base station device (△) ) To the new wireless terminal device (◯) becomes interference of the existing wireless terminal device (●), and it is not possible to communicate in the wideband mode with both of them, so some control is required.

図６(d) は、一方の無線基地局装置（▲）と通信する既存の無線端末装置（●）は、他方の無線基地局装置（△）の通信エリアの外にあるが、他方の無線基地局装置（△）と通信しようとする新規の無線端末装置（○）が、両基地局の通信エリアが重なる位置にあるケースである。この場合、一方の無線基地局装置（▲）から既存の無線端末装置（●）に送信される信号が新規の無線端末装置（○）に対して干渉となり、新規の無線端末装置（○）から他方の無線基地局装置（△）に送信される信号が一方の無線基地局装置（●）の干渉となり、このままでは両方で広帯域モードの通信ができないので何らかの制御が必要になる。   In FIG. 6 (d), the existing radio terminal device (●) communicating with one radio base station device (▲) is outside the communication area of the other radio base station device (Δ), but the other radio base station device (△) This is a case where a new wireless terminal device (◯) trying to communicate with the base station device (Δ) is in a position where the communication areas of both base stations overlap. In this case, a signal transmitted from one radio base station apparatus (▲) to the existing radio terminal apparatus (●) interferes with the new radio terminal apparatus (◯), and the new radio terminal apparatus (◯) A signal transmitted to the other radio base station apparatus (Δ) becomes interference of one radio base station apparatus (●), and in this state, both cannot perform broadband mode communication, so some control is required.

図６(c),(d) における干渉を回避する制御例としては、例えば、隣接する無線基地局装置間で、広帯域モードの40ＭHz帯域幅をＣＳＭＡ／ＣＡ方式により時分割利用する方法が考えられる。あるいは、隣接する無線基地局装置をいわゆる「隠れ端末」と想定し、既存の無線端末装置または一方の無線基地局装置がＲＴＳ／ＣＴＳ技術を用いて、データ送信前に帯域予約する方法が考えられる。   As an example of control for avoiding interference in FIGS. 6 (c) and 6 (d), for example, a method in which the 40 MHz bandwidth of the broadband mode is time-divisionally used by the CSMA / CA scheme between adjacent radio base station apparatuses can be considered. . Alternatively, a method may be considered in which an adjacent radio base station apparatus or one of the radio base station apparatuses reserves a band before data transmission using RTS / CTS technology, assuming that the adjacent radio base station apparatus is a so-called “hidden terminal”. .

IEEE Std 802.11 -2012IEEE Std 802.11 -2012

図６(c),(d) に示すように、一方の無線基地局装置（▲）と既存の無線端末装置（●）が広帯域モード（Ｗ）で通信しているときに、隣接する他方の無線基地局装置（△）の通信エリア内に新規の無線端末装置（○）を増設して広帯域モード（Ｗ）で通信しようとする場合、既存の無線端末装置（●）および新規の無線端末装置（○）の位置に応じて干渉の問題を解決する必要がある。しかし、上記のＲＴＳ／ＣＴＳ技術を用いる方法は、制御信号の増加に伴う周波数利用効率の低下を招く。また、ＣＳＭＡ／ＣＡ方式は、無線ＬＡＮシステムで利用されている方式であるため容易に採用できるが、伝送効率は必ずしもよくない。   As shown in FIGS. 6C and 6D, when one radio base station apparatus (▲) and an existing radio terminal apparatus (●) are communicating in the broadband mode (W), When a new wireless terminal device (◯) is added in the communication area of the wireless base station device (Δ) to communicate in the broadband mode (W), the existing wireless terminal device (●) and the new wireless terminal device It is necessary to solve the interference problem according to the position of (◯). However, the above-described method using the RTS / CTS technique causes a decrease in frequency utilization efficiency accompanying an increase in the control signal. The CSMA / CA method can be easily adopted because it is a method used in the wireless LAN system, but the transmission efficiency is not always good.

また、従来の無線通信システムでは、無線基地局装置が広帯域モードから狭帯域モードに自動的に変更する手順は規定されておらず、仮に隣接する無線基地局装置がそれぞれ勝手に広帯域モードから狭帯域モードに変更した場合に、既存の無線端末装置が通信中であった一方の無線基地局装置を見失うとともに、狭帯域モードにおける周波数帯域が同じになれば、干渉の問題は解決しない。   Further, in the conventional radio communication system, the procedure for the radio base station apparatus to automatically change from the wideband mode to the narrowband mode is not stipulated. When the mode is changed, if the existing radio terminal apparatus is losing sight of one radio base station apparatus and the frequency bands in the narrowband mode are the same, the problem of interference is not solved.

本発明は、それぞれの通信エリアの一部が重なる２つの無線基地局装置の一方に接続する無線端末装置を増設するときに、干渉回避のために広帯域モードから狭帯域モードへの切り替えを自動的に行うことができる無線通信システム、無線通信方法、無線基地局装置および遠隔制御装置に関する。   The present invention automatically switches from a wideband mode to a narrowband mode to avoid interference when adding a wireless terminal device connected to one of two wireless base station devices that overlap each other in their communication areas. The present invention relates to a radio communication system, a radio communication method, a radio base station apparatus, and a remote control apparatus that can be performed in the same manner.

第１の発明は、所定の周波数帯域幅および中心周波数で通信中の第１の無線基地局装置と第１の無線端末装置に対して、当該第１の無線基地局装置に隣接する第２の無線基地局装置の通信エリアに第２の無線端末装置を増設するときに干渉となる場合に、当該所定の周波数帯域幅の広帯域モードから相対的に狭い周波数帯域幅の狭帯域モードに変更する無線通信システムにおいて、第１の無線基地局装置および第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、第２の無線端末装置を増設するときに、第１の無線基地局装置および第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する遠隔制御装置を備え、第１の無線基地局装置および第２の無線基地局装置は、送信停止フレーム（ＮＡＶ）が設定されていないタイミングでそれぞれ無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで遠隔制御装置に通知する手段を備え、第１の無線端末装置および第２の無線端末装置は、無線基地局ＩＤを受信したときに、その無線基地局装置に対して無線端末ＩＤを応答する手段を備え、遠隔制御装置は、第１の無線基地局装置および／または第２の無線基地局装置から通知された無線基地局ＩＤと無線端末ＩＤに基づいて、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断したときに、第１の無線基地局装置および第２の無線基地局装置に対して、広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知する手段を備え、第１の無線基地局装置および第２の無線基地局装置は、遠隔制御装置から通知されたモード変更指示に応じて広帯域モードから狭帯域モードに変更する構成である。   The first invention relates to a first radio base station apparatus and a first radio terminal apparatus that are communicating with each other with a predetermined frequency bandwidth and center frequency, and are adjacent to the first radio base station apparatus. Radio that changes from the wideband mode of the predetermined frequency bandwidth to the narrowband mode of a relatively narrow frequency bandwidth when interference occurs when the second wireless terminal device is added to the communication area of the wireless base station device In the communication system, connected to the first radio base station apparatus and the second radio base station apparatus, manages the connection relationship between the radio base station apparatus and the radio terminal apparatus in communication, and adds a second radio terminal apparatus A first wireless base station device, comprising: a remote control device that sets a transmission stop frame (NAV) so as not to overlap each other for the first wireless base station device and the second wireless base station device. And second The radio base station apparatus broadcasts the radio base station ID at a timing when no transmission stop frame (NAV) is set, and sets the radio base station ID and the radio terminal ID when there is a response of the radio terminal ID. The first wireless terminal device and the second wireless terminal device respond with the wireless terminal ID to the wireless base station device when receiving the wireless base station ID. And the remote control device is a second wireless terminal device to be added based on the wireless base station ID and the wireless terminal ID notified from the first wireless base station device and / or the second wireless base station device. Narrow band in which the frequency band does not overlap with each other from the wideband mode to the first radio base station apparatus and the second radio base station apparatus when it is determined that the communication in the wideband mode interferes with each other Means for notifying a mode change instruction for changing to a mode, and the first radio base station apparatus and the second radio base station apparatus are configured to change from a wideband mode to a narrowband mode according to a mode change instruction notified from a remote control device. The configuration is changed to

第１の発明の無線通信システムにおいて、遠隔制御装置は、第１の無線基地局装置および第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または第２の無線基地局装置から第２の無線端末装置の無線端末ＩＤおよび第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断する構成である。   In the wireless communication system of the first invention, the remote control device is notified when the same wireless terminal ID is notified from the first wireless base station device and the second wireless base station device, or the second wireless base station device. Configuration in which when the wireless terminal ID of the second wireless terminal device and the wireless terminal ID of the first wireless terminal device are notified, the communication of the second wireless terminal device to be added interferes with each other in the broadband mode It is.

第２の発明は、所定の周波数帯域幅および中心周波数で通信中の第１の無線基地局装置と第１の無線端末装置に対して、当該第１の無線基地局装置に隣接する第２の無線基地局装置の通信エリアに第２の無線端末装置を増設するときに干渉となる場合に、当該所定の周波数帯域幅の広帯域モードから相対的に狭い周波数帯域幅の狭帯域モードに変更する無線通信方法において、第１の無線基地局装置および第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、第２の無線端末装置を増設するときに、第１の無線基地局装置および第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する遠隔制御装置を備え、第１の無線基地局装置および第２の無線基地局装置は、送信停止フレーム（ＮＡＶ）が設定されていないタイミングでそれぞれ無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで遠隔制御装置に通知し、第１の無線端末装置および第２の無線端末装置は、無線基地局ＩＤを受信したときに、その無線基地局装置に対して無線端末ＩＤを応答し、遠隔制御装置は、第１の無線基地局装置および／または第２の無線基地局装置から通知された無線基地局ＩＤと無線端末ＩＤに基づいて、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断したときに、第１の無線基地局装置および第２の無線基地局装置に対して、広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知し、第１の無線基地局装置および第２の無線基地局装置は、遠隔制御装置から通知されたモード変更指示に応じて広帯域モードから狭帯域モードに変更する。   According to a second aspect of the present invention, the second radio base station apparatus and the first radio terminal apparatus that are communicating with each other with a predetermined frequency bandwidth and center frequency are adjacent to the first radio base station apparatus. Radio that changes from the wideband mode of the predetermined frequency bandwidth to the narrowband mode of a relatively narrow frequency bandwidth when interference occurs when the second wireless terminal device is added to the communication area of the wireless base station device The communication method is connected to the first radio base station apparatus and the second radio base station apparatus, manages the connection relationship between the radio base station apparatus and the radio terminal apparatus in communication, and adds the second radio terminal apparatus. A first wireless base station device, comprising: a remote control device that sets a transmission stop frame (NAV) so as not to overlap each other for the first wireless base station device and the second wireless base station device. And second nothing The base station apparatus broadcasts the radio base station ID at a timing when no transmission stop frame (NAV) is set, and when there is a response of the radio terminal ID, the base station apparatus and the radio terminal ID are set as a set. When the first wireless terminal device and the second wireless terminal device receive the wireless base station ID, the first wireless terminal device and the second wireless terminal device respond with the wireless terminal ID to the wireless base station device, and the remote control device Is based on the radio base station ID and the radio terminal ID notified from the first radio base station device and / or the second radio base station device, and the communication of the second radio terminal device to be added is mutually in the broadband mode. When it is determined that interference occurs, the first radio base station apparatus and the second radio base station apparatus are changed from the wideband mode to the narrowband mode in which the frequency bands do not overlap each other. It notifies the view, the first radio base station apparatus and the second radio base station apparatus changes from wideband mode to narrowband mode according to the notified mode change instruction from the remote controller.

第２の発明の無線通信方法において、遠隔制御装置は、第１の無線基地局装置および第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または第２の無線基地局装置から第２の無線端末装置の無線端末ＩＤおよび第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断する。   In the radio communication method of the second invention, the remote control device is notified when the same radio terminal ID is notified from the first radio base station device and the second radio base station device, or the second radio base station device. When the wireless terminal ID of the second wireless terminal device and the wireless terminal ID of the first wireless terminal device are notified, the communication of the second wireless terminal device to be added is determined to interfere with each other in the broadband mode.

第３の発明は、第１の発明の無線通信システムの無線基地局装置において、送信停止フレーム（ＮＡＶ）が設定されていないタイミングで無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで遠隔制御装置に通知する手段と、遠隔制御装置から通知されたモード変更指示に応じて広帯域モードから狭帯域モードに変更する手段を備える。   According to a third aspect of the present invention, in the wireless base station device of the wireless communication system of the first aspect, the wireless base station ID is notified at a timing when a transmission stop frame (NAV) is not set, and there is a response of the wireless terminal ID In some cases, the wireless base station ID and the wireless terminal ID are provided as a set to the remote control device, and according to the mode change instruction notified from the remote control device, the broadband mode is changed to the narrowband mode.

第４の発明は、第１の発明の無線通信システムの遠隔制御装置において、第１の無線基地局装置および第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、第２の無線端末装置を増設するときに、第１の無線基地局装置および第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する手段と、第１の無線基地局装置および／または第２の無線基地局装置から通知された無線基地局ＩＤと無線端末ＩＤに基づいて、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断したときに、第１の無線基地局装置および第２の無線基地局装置に対して、広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知する手段とを備える。   According to a fourth aspect of the present invention, in the remote control device of the wireless communication system of the first aspect, the wireless base station device and the wireless terminal device that are connected to the first wireless base station device and the second wireless base station device and are in communication When the second wireless terminal device is added, the transmission stop frame (NAV) is not overlapped with the first wireless base station device and the second wireless base station device. Communication with the second wireless terminal device to be added based on the wireless base station ID and the wireless terminal ID notified from the first wireless base station device and / or the second wireless base station device. A mode in which the first radio base station apparatus and the second radio base station apparatus are changed from the wideband mode to the narrowband mode in which the frequency bands do not overlap each other when it is determined that interference occurs in the wideband mode. And means for notifying the further instruction.

第４の発明の遠隔制御装置において、第１の無線基地局装置および第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または第２の無線基地局装置から第２の無線端末装置の無線端末ＩＤおよび第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する第２の無線端末装置の通信が広帯域モードで互いに干渉となると判断する構成である。   In the remote control device of the fourth invention, when the same radio terminal ID is notified from the first radio base station device and the second radio base station device, or from the second radio base station device to the second radio When the wireless terminal ID of the terminal device and the wireless terminal ID of the first wireless terminal device are notified, it is determined that the communication of the second wireless terminal device to be added interferes with each other in the broadband mode.

本発明は、広帯域モードで通信中の第１の無線基地局装置と第１の無線端末装置に対して、第１の無線基地局装置に隣接する第２の無線基地局装置の通信エリアに第２の無線端末装置を増設するときに、広帯域モードで互いに干渉となる場合には、広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更することにより、自動的に周波数帯域を調整して第２の無線端末装置の増設に対応することができる。   The present invention relates to a communication area of a second radio base station apparatus adjacent to the first radio base station apparatus for the first radio base station apparatus and the first radio terminal apparatus communicating in the broadband mode. When the two wireless terminal apparatuses are interfered with each other in the wideband mode, the frequency band is automatically adjusted by changing from the wideband mode to the narrowband mode in which the frequency bands do not overlap each other. It is possible to cope with the addition of 2 wireless terminal devices.

また、周波数分割であるため、第１の無線基地局装置と第２の無線基地局装置との間の同期は不要であり、第２の無線端末装置の増設が容易になる。なお、第２の無線端末装置と第２の無線基地局装置との通信が、第１の無線端末装置と第１の無線基地局装置との通信に干渉を与える関係にない場合は、双方で広帯域モードでの通信が可能である。   In addition, because of frequency division, synchronization between the first radio base station apparatus and the second radio base station apparatus is unnecessary, and the addition of the second radio terminal apparatus becomes easy. If the communication between the second radio terminal apparatus and the second radio base station apparatus is not related to the interference between the communication between the first radio terminal apparatus and the first radio base station apparatus, both Communication in a broadband mode is possible.

本発明の無線通信システムの実施例１を示す図である。It is a figure which shows Example 1 of the radio | wireless communications system of this invention. 本発明の無線通信システムの実施例１におけるモード変更手順を示すフローチャートである。It is a flowchart which shows the mode change procedure in Example 1 of the radio | wireless communications system of this invention. 本発明の無線通信システムの実施例２を示す図である。It is a figure which shows Example 2 of the radio | wireless communications system of this invention. 本発明の無線通信システムの実施例２におけるモード変更手順を示すフローチャートである。It is a flowchart which shows the mode change procedure in Example 2 of the radio | wireless communications system of this invention. 本発明の無線基地局装置および遠隔制御装置の構成例を示す図である。It is a figure which shows the structural example of the radio base station apparatus and remote control apparatus of this invention. 無線端末装置の増設例を示す図である。It is a figure which shows the example of expansion of a radio | wireless terminal apparatus.

図１は、本発明の無線通信システムの実施例１を示す。
図１において、一方の無線基地局装置１１の通信エリア１２内に既存の無線端末装置１３があり、広帯域モードで無線通信しているとき、隣接する他方の無線基地局装置２１の通信エリア内２２に新規の無線端末装置２３を増設する状況を示す。各無線基地局装置１１，２１には、有線回線または無線回線を介して遠隔制御装置３１が接続されている。新規の無線端末装置２３を増設する際には、無線基地局装置１１および無線基地局装置２１は遠隔制御装置３１との接続を行う。遠隔制御装置３１は、通信中の無線基地局装置１１のＩＤ１１と無線端末装置１３のＩＤ１３をデータベースで管理しており、隣接する通信エリア間で広帯域モードにおける干渉が予測されるときに、隣接する無線基地局装置１１，２１に対して、互いに周波数帯域が重ならない狭帯域モードへの変更を指示する。 FIG. 1 shows Embodiment 1 of the wireless communication system of the present invention.
In FIG. 1, when there is an existing wireless terminal device 13 in the communication area 12 of one radio base station device 11 and performing wireless communication in the broadband mode, within the communication area 22 of the other adjacent radio base station device 21. The situation where a new wireless terminal device 23 is added is shown. A remote control device 31 is connected to each of the wireless base station devices 11 and 21 via a wired line or a wireless line. When adding a new wireless terminal device 23, the wireless base station device 11 and the wireless base station device 21 are connected to the remote control device 31. The remote control device 31 manages the ID 11 of the wireless base station device 11 and the ID 13 of the wireless terminal device 13 in communication in a database, and is adjacent when interference in the broadband mode is predicted between adjacent communication areas. The radio base station apparatuses 11 and 21 are instructed to change to the narrow band mode in which the frequency bands do not overlap each other.

ここで、新規の無線端末装置２３は、無線基地局装置１１の通信エリア１２と無線基地局装置２１の通信エリア２２が重なる位置にある。すなわち、図６(d) に示す状況にあるものとする。このままでは、無線基地局装置１１，２１ともに広帯域モードの通信ができない。そこで、無線基地局装置１１，２１は、遠隔制御装置３１の指示に応じて互いに周波数帯域が重ならない狭帯域モードへの変更を実施し、無線基地局装置１１と無線端末装置１３は狭帯域モードで通信を継続し、無線基地局装置２１と新規の無線端末装置２３は割り当てられた狭帯域モードで通信を開始する。   Here, the new wireless terminal device 23 is in a position where the communication area 12 of the wireless base station device 11 and the communication area 22 of the wireless base station device 21 overlap. That is, it is assumed that the situation shown in FIG. In this state, the wireless base station apparatuses 11 and 21 cannot perform broadband mode communication. Therefore, the radio base station apparatuses 11 and 21 change to the narrow band mode in which the frequency bands do not overlap each other according to the instruction from the remote control apparatus 31, and the radio base station apparatus 11 and the radio terminal apparatus 13 are in the narrow band mode. The wireless base station device 21 and the new wireless terminal device 23 start communication in the assigned narrowband mode.

図２は、本発明の無線通信システムの実施例１におけるモード変更手順を示す。
図２において、無線基地局装置２１の通信エリアに新規の無線端末装置２３が増設されるとき、まず遠隔制御装置３１は、隣接する無線基地局装置１１，２１に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定し（Ｓ１）、無線端末装置の増設処理が完了した後に解除する。ここでは、無線基地局装置１１，２１の順番に交互に送信停止フレーム（ＮＡＶ）が設定される。 FIG. 2 shows a mode change procedure in the first embodiment of the wireless communication system of the present invention.
In FIG. 2, when a new wireless terminal device 23 is added to the communication area of the wireless base station device 21, the remote control device 31 first transmits a transmission stop frame (NAV) to the adjacent wireless base station devices 11 and 21. ) Are set so as not to overlap each other (S1), and released after the wireless terminal device expansion processing is completed. Here, transmission stop frames (NAV) are alternately set in the order of the radio base station apparatuses 11 and 21.

無線基地局装置１１，２１は、各フレームの先頭で無線基地局のＩＤ１１，ＩＤ２１をそれぞれ報知するが、ここではＮＡＶが設定されていない無線基地局装置２１がＩＤ２１を報知する（Ｓ２）。一方、新規の無線端末装置２３は、一定期間にわたり無線基地局ＩＤをモニタし、まず無線基地局装置２１のＩＤ２１を受信すると、同一フレーム内に設けられたランダムアクセス領域を用いて、ＩＤ２３を無線基地局装置２１に応答する（Ｓ３）。無線基地局装置２１は、無線端末装置２３のＩＤ２３を受信すると、ＩＤ２１とＩＤ２３をペアで遠隔制御装置３１に通知する（Ｓ４）。   The radio base station apparatuses 11 and 21 report the ID 11 and ID 21 of the radio base station at the beginning of each frame, but here, the radio base station apparatus 21 to which no NAV is set reports the ID 21 (S2). On the other hand, the new wireless terminal device 23 monitors the wireless base station ID for a certain period. When the new wireless terminal device 23 first receives the ID 21 of the wireless base station device 21, the wireless terminal device 23 wirelessly transmits the ID 23 using the random access area provided in the same frame. It responds to the base station apparatus 21 (S3). When receiving the ID 23 of the wireless terminal device 23, the wireless base station device 21 notifies the remote control device 31 of ID 21 and ID 23 as a pair (S4).

次に、ＮＡＶが設定されていない無線基地局装置１１がＩＤ１１を報知し（Ｓ５）、新規の無線端末装置２３が無線基地局装置１１のＩＤ１１を受信すると、同一フレーム内に設けられたランダムアクセス領域を用いて、ＩＤ２３を無線基地局装置１１に応答する（Ｓ６）。無線基地局装置１１は、無線端末装置２３のＩＤ２３を受信すると、ＩＤ１１とＩＤ２３をペアで遠隔制御装置３１に通知する（Ｓ７）。   Next, when the radio base station apparatus 11 in which NAV is not set broadcasts ID11 (S5) and the new radio terminal apparatus 23 receives ID11 of the radio base station apparatus 11, random access provided in the same frame Using the area, ID23 is returned to the radio base station apparatus 11 (S6). When receiving the ID 23 of the wireless terminal device 23, the wireless base station device 11 notifies the remote control device 31 of ID11 and ID23 as a pair (S7).

遠隔制御装置３１は、無線基地局装置１１，２１から通知される各ＩＤを照合し、複数の無線基地局装置１１，２１から同一のＩＤ２３が通知されていれば、新規の無線端末装置２３における広帯域モードの通信が干渉になると判断する（Ｓ８）。そして、無線基地局装置１１，２１に対して、互いに周波数帯域が重ならない狭帯域モードへの変更を指示する（Ｓ９）。   The remote control device 31 collates each ID notified from the radio base station devices 11 and 21, and if the same ID 23 is notified from the plurality of radio base station devices 11 and 21, the remote control device 31 in the new radio terminal device 23 It is determined that communication in the broadband mode becomes interference (S8). Then, the radio base station apparatuses 11 and 21 are instructed to change to the narrow band mode in which the frequency bands do not overlap each other (S9).

無線基地局装置１１は、広帯域モードから遠隔制御装置３１に指示された狭帯域モード（周波数帯域および中心周波数）に変更する（Ｓ10）。このとき、無線基地局装置１１と既存の無線端末装置１３（図２では省略）は、広帯域モードから狭帯域モードに変更するための制御信号をやりとりした後に、広帯域モードから狭帯域モードへの変更を同時に実施し、狭帯域モードによる通信を継続する。   The radio base station apparatus 11 changes from the wideband mode to the narrowband mode (frequency band and center frequency) instructed by the remote control device 31 (S10). At this time, the radio base station apparatus 11 and the existing radio terminal apparatus 13 (not shown in FIG. 2) exchange control signals for changing from the wideband mode to the narrowband mode, and then change from the wideband mode to the narrowband mode. At the same time to continue communication in the narrowband mode.

無線基地局装置２１は、遠隔制御装置３１に指示された狭帯域モード（周波数帯域および中心周波数）に設定し（Ｓ11）、新規の無線端末装置２３との間で当該狭帯域モードによる通信を開始する。   The radio base station device 21 sets the narrowband mode (frequency band and center frequency) instructed by the remote control device 31 (S11), and starts communication with the new radio terminal device 23 in the narrowband mode. To do.

このとき、隣接する通信エリアが使用する狭帯域モードの周波数帯域が異なるので、それぞれの通信が干渉になることはない。すなわち、無線基地局装置１１と無線基地局装置２１との間で周波数分割利用が行われたことになる。   At this time, since the frequency bands of the narrow band modes used by adjacent communication areas are different, each communication does not cause interference. That is, frequency division use is performed between the radio base station apparatus 11 and the radio base station apparatus 21.

図３は、本発明の無線通信システムの実施例２を示す。
図３において、一方の無線基地局装置１１の通信エリア１２内に既存の無線端末装置１３があり、広帯域モードで無線通信しているときに、隣接する他方の無線基地局装置２１の通信エリア内２２に新規の無線端末装置２３を増設する状況は実施例１と同様である。 FIG. 3 shows a second embodiment of the wireless communication system of the present invention.
In FIG. 3, when there is an existing wireless terminal device 13 in the communication area 12 of one radio base station device 11 and wireless communication is performed in the broadband mode, the communication area of the other adjacent radio base station device 21 is within the communication area. The situation of adding a new wireless terminal device 23 to 22 is the same as in the first embodiment.

実施例２では、既存の無線端末装置１３は、無線基地局装置１１の通信エリア１２と無線基地局装置２１の通信エリア２２が重なる位置にあるときに、通信エリア１２と重ならない通信エリア２２に新規の無線端末装置２３を増設する。すなわち、図６(c) に示す状況にあるものとする。このままでは、無線基地局装置１１，２１ともに広帯域モードの通信ができない。そこで、無線基地局装置１１，２１は、遠隔制御装置３１の指示に応じて互いに周波数帯域が重ならない狭帯域モードへの変更を実施し、無線基地局装置１１と無線端末装置１３は狭帯域モードで通信を継続し、無線基地局装置２１と新規の無線端末装置２３は割り当てられた狭帯域モードで通信を開始する。   In the second embodiment, the existing wireless terminal device 13 is placed in a communication area 22 that does not overlap the communication area 12 when the communication area 12 of the wireless base station device 11 and the communication area 22 of the wireless base station device 21 overlap each other. A new wireless terminal device 23 is added. In other words, it is assumed that the situation shown in FIG. In this state, the wireless base station apparatuses 11 and 21 cannot perform broadband mode communication. Therefore, the radio base station apparatuses 11 and 21 change to the narrow band mode in which the frequency bands do not overlap each other according to the instruction from the remote control apparatus 31, and the radio base station apparatus 11 and the radio terminal apparatus 13 are in the narrow band mode. The wireless base station device 21 and the new wireless terminal device 23 start communication in the assigned narrowband mode.

図４は、本発明の無線通信システムの実施例２におけるモード変更手順を示す。
図４において、無線基地局装置２１の通信エリア２２に新規の無線端末装置２３が増設されるとき、まず遠隔制御装置３１は、隣接する無線基地局装置１１，２１に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定し（Ｓ21）、無線端末装置の増設処理が完了した後に解除する。ここでは、無線基地局装置１１，２１の順番に交互に送信停止フレーム（ＮＡＶ）が設定される。 FIG. 4 shows a mode change procedure in the second embodiment of the wireless communication system of the present invention.
In FIG. 4, when a new wireless terminal device 23 is added to the communication area 22 of the wireless base station device 21, the remote control device 31 first transmits a transmission stop frame ( NAV) is set so as not to overlap each other (S21), and is released after the wireless terminal device expansion processing is completed. Here, transmission stop frames (NAV) are alternately set in the order of the radio base station apparatuses 11 and 21.

無線基地局装置１１，２１は、各フレームの先頭で無線基地局のＩＤ１１，ＩＤ２１をそれぞれ報知するが、ここではＮＡＶが設定されていない無線基地局装置２１がＩＤ２１を報知する（Ｓ22）。一方、新規の無線端末装置２３は、一定期間にわたり無線基地局ＩＤをモニタし、まず無線基地局装置２１のＩＤ２１を受信すると、同一フレーム内に設けられたランダムアクセス領域を用いて、ＩＤ２３を無線基地局装置２１に応答する（Ｓ23）。また、既存の無線端末装置１３も同様に無線基地局装置２１のＩＤ２１を受信すると、同一フレーム内に設けられたランダムアクセス領域を用いて、ＩＤ２３を無線基地局装置２１に応答する（Ｓ24）。無線基地局装置２１は、無線端末装置２３のＩＤ２３および無線端末装置１３のＩＤ１３を受信すると、ＩＤ２１とＩＤ２３とＩＤ１３をセットで遠隔制御装置３１に通知する（Ｓ25）。   The radio base station apparatuses 11 and 21 report the ID 11 and ID 21 of the radio base station at the head of each frame, but here the radio base station apparatus 21 to which no NAV is set reports the ID 21 (S22). On the other hand, the new wireless terminal device 23 monitors the wireless base station ID for a certain period. When the new wireless terminal device 23 first receives the ID 21 of the wireless base station device 21, the wireless terminal device 23 wirelessly transmits the ID 23 using the random access area provided in the same frame. It responds to the base station apparatus 21 (S23). Similarly, when the existing radio terminal apparatus 13 receives the ID 21 of the radio base station apparatus 21, the ID 23 is returned to the radio base station apparatus 21 using a random access area provided in the same frame (S24). When receiving the ID 23 of the wireless terminal device 23 and the ID 13 of the wireless terminal device 13, the wireless base station device 21 notifies the remote control device 31 of ID21, ID23, and ID13 as a set (S25).

次に、ＮＡＶが設定されていない無線基地局装置１１がＩＤ１１を報知するが、図４では省略する。ここでは、無線端末装置１３のみがＩＤ１３を応答するが、すでに認証済みであるので遠隔制御装置３１への通知は行わない。   Next, although the radio base station apparatus 11 in which NAV is not set notifies ID11, it is omitted in FIG. Here, only the wireless terminal device 13 responds with ID13, but since it has already been authenticated, the remote control device 31 is not notified.

遠隔制御装置３１は、無線基地局装置２１から通知される各ＩＤを照合し、複数の無線端末装置１３，２３のＩＤ１３およびＩＤ２３が通知されていれば、無線基地局装置２１における広帯域モードの通信は干渉になると判断する（Ｓ26）。そして、無線基地局装置１１，２１に対して、互いに周波数帯域が重ならない狭帯域モードへの変更を指示する（Ｓ27）。   The remote control device 31 collates each ID notified from the wireless base station device 21, and if the ID 13 and ID 23 of the plurality of wireless terminal devices 13 and 23 are notified, the communication in the broadband mode in the wireless base station device 21. Is determined to cause interference (S26). Then, the radio base station apparatuses 11 and 21 are instructed to change to the narrow band mode in which the frequency bands do not overlap each other (S27).

無線基地局装置１１は、広帯域モードから遠隔制御装置３１に指示された狭帯域モード（周波数帯域および中心周波数）に変更する（Ｓ28）。このとき、無線基地局装置１１と既存の無線端末装置１３は、広帯域モードから狭帯域モードに変更するための制御信号をやりとりした後に、広帯域モードから狭帯域モードへの変更を同時に実施し、狭帯域モードによる通信を継続する。   The radio base station apparatus 11 changes from the wideband mode to the narrowband mode (frequency band and center frequency) instructed by the remote control device 31 (S28). At this time, the radio base station apparatus 11 and the existing radio terminal apparatus 13 exchange the control signal for changing from the wideband mode to the narrowband mode, and then simultaneously change from the wideband mode to the narrowband mode. Continue communication in bandwidth mode.

無線基地局装置２１は、遠隔制御装置３１に指示された狭帯域モード（周波数帯域および中心周波数）に設定し（Ｓ29）、新規の無線端末装置２３との間で当該狭帯域モードによる通信が開始される。   The radio base station device 21 sets the narrowband mode (frequency band and center frequency) instructed by the remote control device 31 (S29), and starts communication with the new radio terminal device 23 in the narrowband mode. Is done.

このとき、隣接する通信エリアが使用する狭帯域モードの周波数帯域が異なるので、それぞれの通信が干渉になることはない。すなわち、無線基地局装置１１と無線基地局装置２１との間で周波数分割利用が行われたことになる。   At this time, since the frequency bands of the narrow band modes used by adjacent communication areas are different, each communication does not cause interference. That is, frequency division use is performed between the radio base station apparatus 11 and the radio base station apparatus 21.

図５は、本発明の無線通信システムの各装置の構成例を示す。
図５において、無線基地局装置１１（２１）は、送受信部４１、モード変更制御部４２、ＮＡＶ設定／ＩＤ送受信制御部４３、遠隔制御装置通信部４４により構成される。送受信部４１は、無線端末装置１３（２３）との間で信号の送受信を行う。ＮＡＶ設定／ＩＤ送受信制御部４３は、遠隔制御装置３１からの指示に応じたタイミングで送信停止フレーム（ＮＡＶ）を設定し、ＮＡＶの非設定時に無線基地局装置のＩＤを報知し、応答のあった無線端末装置のＩＤを受信し、遠隔制御装置通信部４４に出力する。遠隔制御装置通信部４４は、ＮＡＶ設定／ＩＤ送受信制御部４３から入力する無線基地局装置のＩＤと無線端末装置のＩＤを遠隔制御装置３１に通知するとともに、遠隔制御装置３１から通知されたモード変更指示をモード変更制御部４２に出力する。モード変更制御部４２は、遠隔制御装置３１から通知されたモード変更指示に応じて、送受信部４１に対して広帯域モードから狭帯域モードへの変更／設定を行う。 FIG. 5 shows a configuration example of each device of the wireless communication system of the present invention.
In FIG. 5, the radio base station apparatus 11 (21) includes a transmission / reception unit 41, a mode change control unit 42, a NAV setting / ID transmission / reception control unit 43, and a remote control device communication unit 44. The transmission / reception unit 41 transmits / receives a signal to / from the wireless terminal device 13 (23). The NAV setting / ID transmission / reception control unit 43 sets a transmission stop frame (NAV) at a timing according to an instruction from the remote control device 31, informs the ID of the radio base station device when NAV is not set, and receives a response. The wireless terminal device ID is received and output to the remote control device communication unit 44. The remote control device communication unit 44 notifies the remote control device 31 of the ID of the wireless base station device and the ID of the wireless terminal device input from the NAV setting / ID transmission / reception control unit 43, and the mode notified from the remote control device 31. A change instruction is output to the mode change control unit 42. The mode change control unit 42 changes / sets the transmission / reception unit 41 from the wideband mode to the narrowband mode in response to the mode change instruction notified from the remote control device 31.

無線端末装置１３（２３）は、送受信部５１、モード変更制御部５２、ＩＤ送受信制御部５３により構成される。送受信部５１は、無線基地局装置１１との間で信号の送受信を行う。モード変更制御部５２は、接続先の無線基地局装置からの指示に応じてモード変更処理を行う。ＩＤ送受信制御部５３は、無線基地局装置のＩＤを受信したときに無線端末装置のＩＤを応答する処理を行う。   The wireless terminal device 13 (23) includes a transmission / reception unit 51, a mode change control unit 52, and an ID transmission / reception control unit 53. The transmission / reception unit 51 transmits / receives a signal to / from the radio base station apparatus 11. The mode change control unit 52 performs a mode change process in response to an instruction from the connection destination radio base station apparatus. The ID transmission / reception control unit 53 performs a process of responding to the ID of the wireless terminal device when receiving the ID of the wireless base station device.

遠隔制御装置３１は、無線基地局装置通信部６１、干渉判定部６２、モード変更制御部６３、管理ＤＢ６４により構成される。管理ＤＢ６４は、無線基地局装置と無線端末装置の接続関係を管理する。無線基地局装置通信部６１は、無線基地局装置から入力する無線基地局装置のＩＤと無線端末装置のＩＤを干渉判定部６２に出力するとともに、モード変更制御部６３から出力されるモード変更指示を無線基地局装置に通知する。干渉判定部６２は、管理ＤＢ６４のデータと、無線基地局装置のＩＤと無線端末装置のＩＤの組合せから干渉の有無を判定する。実施例１の場合は、新規の無線端末装置２３における広帯域モードの通信が干渉となり、実施例２の場合は、無線基地局装置２１における広帯域モードの通信が干渉となることが判定される。モード変更制御部６３は、干渉と判定された場合に、広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を出力する。   The remote control device 31 includes a radio base station device communication unit 61, an interference determination unit 62, a mode change control unit 63, and a management DB 64. The management DB 64 manages the connection relationship between the wireless base station device and the wireless terminal device. The radio base station apparatus communication unit 61 outputs the ID of the radio base station apparatus and the ID of the radio terminal apparatus input from the radio base station apparatus to the interference determination unit 62 and the mode change instruction output from the mode change control unit 63 To the radio base station apparatus. The interference determination unit 62 determines the presence / absence of interference from the data in the management DB 64 and the combination of the ID of the radio base station device and the ID of the radio terminal device. In the case of the first embodiment, it is determined that the broadband mode communication in the new wireless terminal device 23 becomes interference, and in the case of the second embodiment, the broadband mode communication in the wireless base station device 21 becomes interference. The mode change control unit 63 outputs a mode change instruction for changing from the wideband mode to the narrowband mode in which the frequency bands do not overlap each other when it is determined as interference.

１１ 既存の無線基地局装置
１２ 既存の通信エリア
１３ 既存の無線端末装置
２１ 新規の無線基地局装置
２２ 新規の通信エリア
２３ 新規の無線端末装置
３１ 遠隔制御装置
４１ 送受信部
４２ モード変更制御部
４３ ＮＡＶ設定／ＩＤ送受信制御部
４４ 遠隔制御装置通信部
５１ 送受信部
５２ モード変更制御部
５３ ＩＤ送受信制御部
６１ 無線基地局装置通信部
６２ 干渉判定部
６３ モード変更制御部
６４ 管理ＤＢ DESCRIPTION OF SYMBOLS 11 Existing radio base station apparatus 12 Existing communication area 13 Existing radio terminal apparatus 21 New radio base station apparatus 22 New communication area 23 New radio terminal apparatus 31 Remote control apparatus 41 Transmission / reception part 42 Mode change control part 43 NAV Setting / ID transmission / reception control unit 44 Remote control device communication unit 51 Transmission / reception unit 52 Mode change control unit 53 ID transmission / reception control unit 61 Wireless base station device communication unit 62 Interference determination unit 63 Mode change control unit 64 Management DB

Claims (7)

所定の周波数帯域幅および中心周波数で通信中の第１の無線基地局装置と第１の無線端末装置に対して、当該第１の無線基地局装置に隣接する第２の無線基地局装置の通信エリアに第２の無線端末装置を増設するときに干渉となる場合に、当該所定の周波数帯域幅の広帯域モードから相対的に狭い周波数帯域幅の狭帯域モードに変更する無線通信システムにおいて、
前記第１の無線基地局装置および前記第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、前記第２の無線端末装置を増設するときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する遠隔制御装置を備え、
前記第１の無線基地局装置および前記第２の無線基地局装置は、前記送信停止フレーム（ＮＡＶ）が設定されていないタイミングでそれぞれ無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで前記遠隔制御装置に通知する手段を備え、
前記第１の無線端末装置および第２の無線端末装置は、前記無線基地局ＩＤを受信したときに、その無線基地局装置に対して無線端末ＩＤを応答する手段を備え、
前記遠隔制御装置は、前記第１の無線基地局装置および／または前記第２の無線基地局装置から通知された前記無線基地局ＩＤと前記無線端末ＩＤに基づいて、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断したときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、前記広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知する手段を備え、
前記第１の無線基地局装置および前記第２の無線基地局装置は、前記遠隔制御装置から通知された前記モード変更指示に応じて前記広帯域モードから前記狭帯域モードに変更する構成である
ことを特徴とする無線通信システム。 Communication between a first radio base station apparatus and a first radio terminal apparatus communicating with a predetermined frequency bandwidth and a center frequency by a second radio base station apparatus adjacent to the first radio base station apparatus In a wireless communication system that changes from a wideband mode of the predetermined frequency bandwidth to a narrowband mode of a relatively narrow frequency bandwidth when interference occurs when adding a second wireless terminal device to the area,
Connected to the first radio base station apparatus and the second radio base station apparatus, manages the connection relationship between the radio base station apparatus and the radio terminal apparatus in communication, and adds the second radio terminal apparatus Sometimes, a remote control device that sets a transmission stop frame (NAV) so as not to overlap each other for the first radio base station device and the second radio base station device,
The first radio base station apparatus and the second radio base station apparatus respectively notify the radio base station ID at a timing when the transmission stop frame (NAV) is not set, and there is a response of the radio terminal ID A unit for notifying the remote control device in a set of the wireless base station ID and the wireless terminal ID,
The first wireless terminal device and the second wireless terminal device comprise means for responding the wireless terminal ID to the wireless base station device when receiving the wireless base station ID,
The remote control device adds the second radio to be added based on the radio base station ID and the radio terminal ID notified from the first radio base station device and / or the second radio base station device. When it is determined that the communication of the terminal device interferes with each other in the wideband mode, the first radio base station device and the second radio base station device have a narrow frequency band that does not overlap with each other from the wideband mode. Means for notifying a mode change instruction to change to the band mode,
The first radio base station apparatus and the second radio base station apparatus are configured to change from the wideband mode to the narrowband mode in response to the mode change instruction notified from the remote control apparatus. A wireless communication system. 請求項１に記載の無線通信システムにおいて、
前記遠隔制御装置は、前記第１の無線基地局装置および前記第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または前記第２の無線基地局装置から前記第２の無線端末装置の無線端末ＩＤおよび前記第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断する構成である
ことを特徴とする無線通信システム。 The wireless communication system according to claim 1, wherein
The remote control device receives the second radio when the same radio terminal ID is notified from the first radio base station device and the second radio base station device, or from the second radio base station device. When the wireless terminal ID of the terminal device and the wireless terminal ID of the first wireless terminal device are notified, it is determined that the communication of the second wireless terminal device to be added interferes with each other in the broadband mode. A wireless communication system. 所定の周波数帯域幅および中心周波数で通信中の第１の無線基地局装置と第１の無線端末装置に対して、当該第１の無線基地局装置に隣接する第２の無線基地局装置の通信エリアに第２の無線端末装置を増設するときに干渉となる場合に、当該所定の周波数帯域幅の広帯域モードから相対的に狭い周波数帯域幅の狭帯域モードに変更する無線通信方法において、
前記第１の無線基地局装置および前記第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、前記第２の無線端末装置を増設するときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する遠隔制御装置を備え、
前記第１の無線基地局装置および前記第２の無線基地局装置は、前記送信停止フレーム（ＮＡＶ）が設定されていないタイミングでそれぞれ無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで前記遠隔制御装置に通知し、
前記第１の無線端末装置および第２の無線端末装置は、前記無線基地局ＩＤを受信したときに、その無線基地局装置に対して無線端末ＩＤを応答し、
前記遠隔制御装置は、前記第１の無線基地局装置および／または前記第２の無線基地局装置から通知された前記無線基地局ＩＤと前記無線端末ＩＤに基づいて、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断したときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、前記広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知し、
前記第１の無線基地局装置および前記第２の無線基地局装置は、前記遠隔制御装置から通知された前記モード変更指示に応じて前記広帯域モードから前記狭帯域モードに変更する
ことを特徴とする無線通信方法。 Communication between a first radio base station apparatus and a first radio terminal apparatus communicating with a predetermined frequency bandwidth and a center frequency by a second radio base station apparatus adjacent to the first radio base station apparatus In the wireless communication method of changing from the wideband mode of the predetermined frequency bandwidth to the narrowband mode of a relatively narrow frequency bandwidth when interference occurs when adding a second wireless terminal device to the area,
Connected to the first radio base station apparatus and the second radio base station apparatus, manages the connection relationship between the radio base station apparatus and the radio terminal apparatus in communication, and adds the second radio terminal apparatus Sometimes, a remote control device that sets a transmission stop frame (NAV) so as not to overlap each other for the first radio base station device and the second radio base station device,
The first radio base station apparatus and the second radio base station apparatus respectively notify the radio base station ID at a timing when the transmission stop frame (NAV) is not set, and there is a response of the radio terminal ID Sometimes, the wireless base station ID and the wireless terminal ID are notified to the remote control device as a set,
When the first radio terminal apparatus and the second radio terminal apparatus receive the radio base station ID, the first radio terminal apparatus and the second radio terminal apparatus respond with the radio terminal ID to the radio base station apparatus,
The remote control device adds the second radio to be added based on the radio base station ID and the radio terminal ID notified from the first radio base station device and / or the second radio base station device. When it is determined that the communication of the terminal device interferes with each other in the wideband mode, the first radio base station device and the second radio base station device have a narrow frequency band that does not overlap with each other from the wideband mode. Notify the mode change instruction to change to bandwidth mode,
The first radio base station apparatus and the second radio base station apparatus change from the wideband mode to the narrowband mode according to the mode change instruction notified from the remote control device. Wireless communication method. 請求項３に記載の無線通信方法において、
前記遠隔制御装置は、前記第１の無線基地局装置および前記第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または前記第２の無線基地局装置から前記第２の無線端末装置の無線端末ＩＤおよび前記第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断する
ことを特徴とする無線通信方法。 The wireless communication method according to claim 3,
The remote control device receives the second radio when the same radio terminal ID is notified from the first radio base station device and the second radio base station device, or from the second radio base station device. When the wireless terminal ID of the terminal device and the wireless terminal ID of the first wireless terminal device are notified, it is determined that the communication of the second wireless terminal device to be added interferes with each other in the wideband mode. A wireless communication method. 請求項１または請求項２に記載の無線通信システムの無線基地局装置において、
前記送信停止フレーム（ＮＡＶ）が設定されていないタイミングで無線基地局ＩＤを報知し、無線端末ＩＤの応答があったときに、当該無線基地局ＩＤと無線端末ＩＤをセットで前記遠隔制御装置に通知する手段と、
前記遠隔制御装置から通知された前記モード変更指示に応じて前記広帯域モードから前記狭帯域モードに変更する手段を備えた
ことを特徴とする無線基地局装置。 In the radio base station apparatus of the radio communication system according to claim 1 or 2,
The wireless base station ID is notified at a timing when the transmission stop frame (NAV) is not set, and when there is a response of the wireless terminal ID, the wireless base station ID and the wireless terminal ID are set as a set to the remote control device. A means of notification;
A radio base station apparatus comprising: means for changing from the wideband mode to the narrowband mode in response to the mode change instruction notified from the remote control apparatus. 請求項１または請求項２に記載の無線通信システムの遠隔制御装置において、
前記第１の無線基地局装置および前記第２の無線基地局装置に接続され、通信中の無線基地局装置と無線端末装置の接続関係を管理するとともに、前記第２の無線端末装置を増設するときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、送信停止フレーム（ＮＡＶ）を互いに重ならないように設定する手段と、
前記第１の無線基地局装置および／または前記第２の無線基地局装置から通知された前記無線基地局ＩＤと前記無線端末ＩＤに基づいて、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断したときに、前記第１の無線基地局装置および前記第２の無線基地局装置に対して、前記広帯域モードから互いに周波数帯域が重ならない狭帯域モードに変更するモード変更指示を通知する手段と
を備えたことを特徴とする遠隔制御装置。 In the remote control apparatus of the radio | wireless communications system of Claim 1 or Claim 2,
Connected to the first radio base station apparatus and the second radio base station apparatus, manages the connection relationship between the radio base station apparatus and the radio terminal apparatus in communication, and adds the second radio terminal apparatus When the first radio base station apparatus and the second radio base station apparatus, means for setting a transmission stop frame (NAV) so as not to overlap each other,
Based on the radio base station ID and the radio terminal ID notified from the first radio base station device and / or the second radio base station device, the communication of the second radio terminal device to be added is the A mode in which the first radio base station apparatus and the second radio base station apparatus are changed from the wideband mode to a narrowband mode in which frequency bands do not overlap each other when it is determined that interference occurs in the wideband mode A remote control device comprising: means for notifying a change instruction. 請求項６に記載の遠隔制御装置において、
前記第１の無線基地局装置および前記第２の無線基地局装置から同一の無線端末ＩＤが通知されたとき、または前記第２の無線基地局装置から前記第２の無線端末装置の無線端末ＩＤおよび前記第１の無線端末装置の無線端末ＩＤが通知されたときに、増設する前記第２の無線端末装置の通信が前記広帯域モードで互いに干渉となると判断する構成である ことを特徴とする遠隔制御装置。 The remote control device according to claim 6,
When the same radio terminal ID is notified from the first radio base station apparatus and the second radio base station apparatus, or the radio terminal ID of the second radio terminal apparatus from the second radio base station apparatus When the wireless terminal ID of the first wireless terminal device is notified, the communication of the second wireless terminal device to be added is determined to interfere with each other in the broadband mode. Control device.
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