JP5612171B2 - Radio relay apparatus and radio relay method - Google Patents

Radio relay apparatus and radio relay method Download PDF

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JP5612171B2
JP5612171B2 JP2013140464A JP2013140464A JP5612171B2 JP 5612171 B2 JP5612171 B2 JP 5612171B2 JP 2013140464 A JP2013140464 A JP 2013140464A JP 2013140464 A JP2013140464 A JP 2013140464A JP 5612171 B2 JP5612171 B2 JP 5612171B2
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朗 岸田
朗 岸田
誠 梅内
誠 梅内
健悟 永田
健悟 永田
健史 平栗
健史 平栗
朋浩 徳安
朋浩 徳安
眞部　利裕
利裕 眞部
北條　博史
博史 北條
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Nippon Telegraph and Telephone Corp
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Description

本発明は、ＬＡＮ側の無線ＬＡＮ端末と、ＷＡＮ側の複数のアクセスネットワークとの間で中継処理を行う無線中継装置および無線中継方法に関する。   The present invention relates to a wireless relay device and a wireless relay method for performing relay processing between a wireless LAN terminal on a LAN side and a plurality of access networks on a WAN side.

図５は、無線中継装置の構成例を示す（特許文献１）。
図５において、無線中継装置１０は、ＷＡＮ側のアクセスネットワークである無線ＬＡＮ基地局３１に接続するＷＡＮ側無線ＬＡＮ接続部１１と、同様にアクセスネットワークである携帯電話基地局３２に接続するＷＡＮ側携帯電話接続部１２を備え、ＬＡＮ側で無線ＬＡＮ端末２０に接続するＬＡＮ側無線ＬＡＮ接続部１３を備え、ＷＡＮ側回線の接続切替を制御する制御部１４を備える。 FIG. 5 shows a configuration example of a wireless relay device (Patent Document 1).
In FIG. 5, the wireless relay device 10 includes a WAN side wireless LAN connection unit 11 connected to a wireless LAN base station 31 that is an access network on the WAN side, and a WAN side connected to a mobile phone base station 32 that is also an access network. A cellular phone connection unit 12 is provided, a LAN side wireless LAN connection unit 13 that is connected to the wireless LAN terminal 20 on the LAN side, and a control unit 14 that controls connection switching of the WAN side line.

無線通信装置１０の制御部１４は、例えばＷＡＮ側無線ＬＡＮ接続部１１で無線ＬＡＮ基地局３１からの受信レベルを検出し、当該受信レベルが閾値を超えていれば無線ＬＡＮエリア内と判別し、ＬＡＮ側無線ＬＡＮ接続部１３とＷＡＮ側無線ＬＡＮ接続部１１を接続する。これにより、ＬＡＮ側無線ＬＡＮ接続部１３に接続される無線ＬＡＮ端末２０は、ＷＡＮ側無線ＬＡＮ接続部１１、無線ＬＡＮ基地局３１を介してネットワーク３３に接続される。一方、当該受信レベルが閾値以下であれば無線ＬＡＮエリア外（携帯電話エリア）と判別し、ＬＡＮ側無線ＬＡＮ接続部１３とＷＡＮ側携帯電話接続部１２を接続する。これにより、ＬＡＮ側無線ＬＡＮ接続部１３に接続される無線ＬＡＮ端末２０は、ＷＡＮ側携帯電話接続部１２、携帯電話基地局３２を介してネットワーク３３に接続される。以上のＷＡＮ側の切り替えは、ＷＡＮ側無線ＬＡＮ回線の受信レベルに応じて自動的に行われる。   For example, the control unit 14 of the wireless communication device 10 detects the reception level from the wireless LAN base station 31 at the WAN-side wireless LAN connection unit 11, and determines that the reception level is within the wireless LAN area if the reception level exceeds a threshold value. The LAN side wireless LAN connection unit 13 and the WAN side wireless LAN connection unit 11 are connected. Accordingly, the wireless LAN terminal 20 connected to the LAN side wireless LAN connection unit 13 is connected to the network 33 via the WAN side wireless LAN connection unit 11 and the wireless LAN base station 31. On the other hand, if the reception level is equal to or less than the threshold value, it is determined that the wireless LAN area is outside (mobile phone area), and the LAN side wireless LAN connection unit 13 and the WAN side mobile phone connection unit 12 are connected. Accordingly, the wireless LAN terminal 20 connected to the LAN side wireless LAN connection unit 13 is connected to the network 33 via the WAN side mobile phone connection unit 12 and the mobile phone base station 32. The above switching on the WAN side is automatically performed according to the reception level of the WAN side wireless LAN line.

なお、ＷＡＮ側無線ＬＡＮ回線とＷＡＮ側携帯電話回線の通信品質を比較し、無線通信装置１０の位置が無線ＬＡＮエリア内か無線ＬＡＮエリア外かを判別し、接続先を選択するようにしてもよい。また、ＷＡＮ側携帯電話接続部１２は、ＷｉＭＡＸ（Worldwide interoperability for microwave access)基地局に接続するＷＡＮ側ＷｉＭＡＸ接続部であっても同様であるが、本明細書では移動通信回線の１つである携帯電話に接続する例を用いて説明する。   The communication quality of the WAN-side wireless LAN line and the WAN-side mobile phone line is compared, it is determined whether the position of the wireless communication device 10 is within the wireless LAN area or outside the wireless LAN area, and the connection destination is selected. Good. The WAN-side mobile phone connection unit 12 is the same as the WAN-side WiMAX connection unit that connects to a WiMAX (Worldwide interoperability for microwave access) base station. In this specification, the WAN-side mobile phone connection unit 12 is one of mobile communication lines. A description will be given using an example of connection to a mobile phone.

また、近年はパソコンやＰＤＡだけでなく、携帯電話、ゲーム機、ディジタルカメラ等にも無線ＬＡＮが搭載されている。無線中継装置１０は、ＬＡＮ側無線ＬＡＮ接続部１３を無線ＬＡＮ基地局として機能させることにより、これらの機器を様々なアクセスネットワークに接続させることが可能になる。特に、無線ＬＡＮ端末２０が最も普及しているIEEE802.11b 規格に準拠した機器であっても、ＷＡＮ側無線ＬＡＮ接続部１１として、最新の無線ＬＡＮ技術である高速化技術（IEEE802.11a,g,n)やＱｏＳサポート技術（IEEE802.11e)等を利用することにより、より高速で安定した無線ＬＡＮ接続が可能となる。   In recent years, not only personal computers and PDAs but also mobile phones, game machines, digital cameras and the like are equipped with wireless LAN. The wireless relay device 10 can connect these devices to various access networks by causing the LAN-side wireless LAN connection unit 13 to function as a wireless LAN base station. In particular, even if the wireless LAN terminal 20 is a device that conforms to the most popular IEEE802.11b standard, the WAN-side wireless LAN connection unit 11 is the latest wireless LAN technology for speeding-up technology (IEEE802.11a, g , n), QoS support technology (IEEE802.11e), etc., it becomes possible to establish a wireless LAN connection at higher speed and more stably.

ところで、無線中継装置１０の使い方として、無線中継装置１０を電源ＯＮのまま鞄等に入れ、無線ＬＡＮ端末２０は携帯して持ち歩きながら必要なときに電源ＯＮにして起動し、無線中継装置１０を介してＷＡＮ側の無線ＬＡＮ回線または携帯電話回線に接続し、さらにネットワークに接続することがある。このとき、無線中継装置１０は、常に最適なＷＡＮ側回線を選択するように動作していて電力が消費されることから、稼働時間を長くするために省電力化が課題になっている。   By the way, as a method of using the wireless relay device 10, the wireless relay device 10 is put in a bag or the like with the power turned on, and the wireless LAN terminal 20 is turned on and started up when necessary while carrying and carrying the wireless relay device 10. In some cases, the wireless LAN line or the cellular phone line on the WAN side is connected to the network and further connected to the network. At this time, since the radio relay apparatus 10 is always operated to select an optimum WAN side line and consumes power, power saving is an issue in order to extend the operation time.

また、無線中継装置１０のＷＡＮ側インタフェースとして、図６に示すように、ＷＡＮ側イーサネット（登録商標）接続部１５を備え、ＷＡＮ側イーサネット接続部１５と有線ＬＡＮ接続されるルータ３４を介してネットワーク３３に接続する構成も可能である。この構成の無線中継装置１０は、無線ＬＡＮ端末２０からみると無線ルータ（無線ＬＡＮアクセスポイント）と等価であり、この無線ルータに外出先で無線ＬＡＮや携帯電話にも接続できるようにポータビリティをもたせた構成とも言える。   Further, as shown in FIG. 6, the WAN side interface of the wireless relay device 10 includes a WAN side Ethernet (registered trademark) connection unit 15 and a network via a router 34 connected to the WAN side Ethernet connection unit 15 and a wired LAN. A configuration for connection to 33 is also possible. The wireless relay device 10 having this configuration is equivalent to a wireless router (wireless LAN access point) when viewed from the wireless LAN terminal 20, and this wireless router is provided with portability so that it can be connected to a wireless LAN or a mobile phone on the go. It can be said that it was a configuration.

特開２０１０−０２１８７８号公報JP 2010-021878 A

無線中継装置１０のＷＡＮ側とＬＡＮ側でともに無線ＬＡＮを使用する場合、周辺の無線ＬＡＮ端末との間の干渉に加えて、ＷＡＮ側無線ＬＡＮ接続部１１とＬＡＮ側無線ＬＡＮ接続部１３の近接による干渉が問題になる。一般に、ＷＡＮ側に接続している無線ＬＡＮ基地局は、無線中継装置１０から遠方にある場合が多いため、ＷＡＮ側の受信電力はＬＡＮ側の送信電力に比べて伝搬損失が大きくなり、ＬＡＮ側からＷＡＮ側への干渉が問題になる。例えば自宅内では、ＷＡＮ側回線としてイーサネット回線を使用すればこの干渉問題は回避されるが、例えば駅構内のようにＷＡＮ側とＬＡＮ側でともに無線ＬＡＮを使用する場合では、干渉問題を解決する必要がある。   When both the WAN side and the LAN side of the wireless relay device 10 use a wireless LAN, in addition to interference with peripheral wireless LAN terminals, the proximity of the WAN side wireless LAN connection unit 11 and the LAN side wireless LAN connection unit 13 Interference due to this becomes a problem. In general, since a wireless LAN base station connected to the WAN side is often located far from the wireless relay device 10, the received power on the WAN side has a larger propagation loss than the transmission power on the LAN side, and the LAN side Interference from the WAN to the WAN becomes a problem. For example, in the home, this interference problem can be avoided if an Ethernet line is used as the WAN side line. However, when the wireless LAN is used on both the WAN side and the LAN side as in a station, for example, the interference problem is solved. There is a need.

ここで重要なポイントは、ＷＡＮ側でイーサネット回線を使用する環境では、無線中継装置１０を無線ルータとして機能させるために、無線ＬＡＮ端末２０が自宅のどのような場所にあっても所定の通信品質を確保することを優先することが好ましい。なお、ＷＡＮ側でイーサネット回線を使用する環境では、干渉問題は発生しない。一方、ＷＡＮ側で無線ＬＡＮ回線を使用する環境では、外出中に一緒に携帯しているなど、無線中継装置１０と無線ＬＡＮ端末２０がごく近接して使用される場合が多いので、ＬＡＮ側の無線ＬＡＮ回線の送信電力を低くしても対応でき、むしろＷＡＮ側との干渉回避には有効である。   The important point here is that, in an environment where an Ethernet line is used on the WAN side, in order to make the wireless relay device 10 function as a wireless router, the wireless LAN terminal 20 has a predetermined communication quality no matter where the home is located. It is preferable to give priority to ensuring the above. In an environment where an Ethernet line is used on the WAN side, the interference problem does not occur. On the other hand, in an environment where a wireless LAN line is used on the WAN side, the wireless relay device 10 and the wireless LAN terminal 20 are often used in close proximity, such as being carried together while going out. Even if the transmission power of the wireless LAN line is lowered, it is possible to cope with it, rather, it is effective for avoiding interference with the WAN side.

本発明は、ＷＡＮ側インタフェースとして有線ＬＡＮ回線（イーサネット回線）との接続部を含む無線中継装置において、ＷＡＮ側とＬＡＮ側がともに無線ＬＡＮ接続になる場合の干渉を回避する無線中継装置および無線中継方法を提供することを目的とする。   The present invention relates to a wireless relay device including a connection portion with a wired LAN line (Ethernet line) as a WAN side interface, and a wireless relay device and a wireless relay method for avoiding interference when both the WAN side and the LAN side become wireless LAN connections. The purpose is to provide.

第１の発明は、無線通信回線および有線ＬＡＮ回線を含む複数のＷＡＮ側回線の１つを選択し、そのＷＡＮ側回線に接続されるネットワークとＬＡＮ側で無線ＬＡＮ接続される無線ＬＡＮ端末との中継処理を行う制御部を備えた無線中継装置において、有線ＬＡＮ回線のリンク状態を監視し、有線ＬＡＮ回線のリンクアップとリンクダウンの状態の変化を検出したときに、当該リンク状態を制御部に通知するリンク状態監視部と、無線ＬＡＮ端末に対する送信電力を制御する電力制御部とを備え、制御部は、リンク状態監視部から有線ＬＡＮ回線のリンク状態を取得し、有線ＬＡＮ回線に接続しているときは電力制御部に対して送信電力を基準値から所定値だけアップさせる制御を行い、有線ＬＡＮ回線に接続していないときは電力制御部に対して送信電力を基準値から所定値だけダウンさせる制御を行う構成である。 The first invention selects one of a plurality of WAN side lines including a wireless communication line and a wired LAN line, and a network connected to the WAN side line and a wireless LAN terminal connected to the LAN side on the LAN side In a wireless relay device having a control unit that performs a relay process, when a link state of a wired LAN line is monitored and a change in the link-up and link-down state of the wired LAN line is detected, the link state is transferred to the control unit. A link state monitoring unit for notifying, and a power control unit for controlling transmission power to the wireless LAN terminal. The control unit acquires the link state of the wired LAN line from the link state monitoring unit, and connects to the wired LAN line. If the power control unit is not connected to the wired LAN line, the power control unit is controlled to increase the transmission power by a predetermined value from the reference value. To a configuration for controlling to bring down by a predetermined value the transmission power from the reference value.

第２の発明は、無線通信回線および有線ＬＡＮ回線を含む複数のＷＡＮ側回線の１つを選択し、そのＷＡＮ側回線に接続されるネットワークとＬＡＮ側で無線ＬＡＮ接続される無線ＬＡＮ端末との中継処理を行う無線中継方法において、リンク状態監視部で有線ＬＡＮ回線のリンク状態を監視し、有線ＬＡＮ回線のリンクアップとリンクダウンの状態の変化を検出したときに、当該リンク状態を制御部に通知し、制御部は、リンク状態監視部から有線ＬＡＮ回線のリンク状態を取得し、有線ＬＡＮ回線に接続しているときは、無線ＬＡＮ端末に対する送信電力を制御する電力制御部に対して送信電力を基準値から所定値だけアップさせる制御を行い、有線ＬＡＮ回線に接続していないときは、電力制御部に対して送信電力を基準値から所定値だけダウンさせる制御を行う。
The second invention selects one of a plurality of WAN-side lines including a wireless communication line and a wired LAN line, and a network connected to the WAN-side line and a wireless LAN terminal connected to the LAN on the LAN side. In the wireless relay method for performing relay processing, the link state monitoring unit monitors the link state of the wired LAN line, and when the link state of the wired LAN line is detected to be changed, the link state is transferred to the control unit. The control unit acquires the link state of the wired LAN line from the link state monitoring unit, and when connected to the wired LAN line, the control unit transmits the transmission power to the power control unit that controls the transmission power to the wireless LAN terminal. Is increased by a predetermined value from the reference value, and when not connected to the wired LAN line, the transmission power to the power control unit is determined from the reference value by a predetermined value. Only carry out the control to bring down.

本発明は、ＷＡＮ側で有線ＬＡＮ回線に接続されていれば、ＬＡＮ側の無線ＬＡＮ端末への送信電力を高く設定し、ＷＡＮ側で有線ＬＡＮ回線に接続されていなければ、ＬＡＮ側の無線ＬＡＮ端末への送信電力を低く設定することにより、ＷＡＮ側とＬＡＮ側の無線ＬＡＮ間の干渉を低減することができる。   The present invention sets the transmission power to the wireless LAN terminal on the LAN side to be high if it is connected to the wired LAN line on the WAN side, and the wireless LAN on the LAN side if not connected to the wired LAN line on the WAN side. By setting the transmission power to the terminal low, interference between the wireless LAN on the WAN side and the LAN side can be reduced.

本発明の無線中継装置の参考例の構成を示す図である。It is a figure which shows the structure of the reference example of the radio relay apparatus of this invention. 参考例のＷＡＮ側回線切替手順を示すフローチャートである。It is a flowchart which shows the WAN side line switching procedure of a reference example. 本発明の無線中継装置の実施例の構成を示す図である。It is a figure which shows the structure of the Example of the wireless relay apparatus of this invention. 実施例の電力制御手順を示すフローチャートである。It is a flowchart which shows the electric power control procedure of an Example. 無線中継装置の構成例を示す図である。It is a figure which shows the structural example of a radio relay apparatus. 無線中継装置の構成例を示す図である。It is a figure which shows the structural example of a radio relay apparatus.

図１は、本発明の無線中継装置の参考例の構成を示す。
図１において、本参考例の無線中継装置１０は、図６に示す構成に加えてＷＡＮ側イーサネット接続部１５および制御部１４に接続されるリンク状態監視部１６と、ＬＡＮ側無線ＬＡＮ接続部１３および制御部１４に接続される端末接続状態監視部１７とを備える。 FIG. 1 shows the configuration of a reference example of the wireless relay device of the present invention.
1, in addition to the configuration shown in FIG. 6, the wireless relay device 10 of this reference example includes a link state monitoring unit 16 connected to the WAN side Ethernet connection unit 15 and the control unit 14, and a LAN side wireless LAN connection unit 13. And a terminal connection state monitoring unit 17 connected to the control unit 14.

リンク状態監視部１６は、ＷＡＮ側イーサネット接続部１５のリンク状態を監視し、イーサネットポートのリンクアップとリンクダウンの状態の変化を検出したときに制御部１４に通知する。端末接続状態監視部１７は、ＬＡＮ側無線ＬＡＮ接続部１３に無線ＬＡＮ端末２０が接続しているか否かの状態を監視し、制御部１４からの問い合わせに対してその状態を応答する。   The link state monitoring unit 16 monitors the link state of the WAN-side Ethernet connection unit 15 and notifies the control unit 14 when a change in the link-up and link-down states of the Ethernet port is detected. The terminal connection state monitoring unit 17 monitors the state of whether or not the wireless LAN terminal 20 is connected to the LAN side wireless LAN connection unit 13, and responds to the inquiry from the control unit 14.

制御部１４は、ＷＡＮ側回線を選択する際に、ＷＡＮ側無線ＬＡＮ接続部１１で無線ＬＡＮ基地局を探索し、適当な無線ＬＡＮ基地局が見つかれば当該無線ＬＡＮ基地局との接続処理を行うとともに、ＷＡＮ側無線ＬＡＮ接続部１１とＬＡＮ側無線ＬＡＮ接続部１３を接続する。一方、適当な無線ＬＡＮ基地局が見つからなければ、ＷＡＮ側携帯電話接続部１２を介して携帯電話基地局との接続処理を行うとともに、ＷＡＮ側携帯電話接続部１２とＬＡＮ側無線ＬＡＮ接続部１３を接続する。また、ＷＡＮ側で無線ＬＡＮ回線または携帯電話回線の電波状態をモニタし、電波状態が良好な回線を選択してＬＡＮ側無線ＬＡＮ接続部１３に接続するようにしてもよい。   When selecting the WAN-side line, the control unit 14 searches for a wireless LAN base station by the WAN-side wireless LAN connection unit 11 and performs connection processing with the wireless LAN base station if an appropriate wireless LAN base station is found. At the same time, the WAN side wireless LAN connection unit 11 and the LAN side wireless LAN connection unit 13 are connected. On the other hand, if an appropriate wireless LAN base station is not found, connection processing with the mobile phone base station is performed via the WAN mobile phone connection unit 12, and the WAN mobile phone connection unit 12 and the LAN wireless LAN connection unit 13 are connected. Connect. Further, the radio wave state of the wireless LAN line or the mobile phone line may be monitored on the WAN side, and a line with a good radio wave state may be selected and connected to the LAN side wireless LAN connection unit 13.

以上の制御部１４のＷＡＮ側回線選択機能は標準機能であるが、本実施例ではＷＡＮ側イーサネット接続部１５のリンク状態に応じてＷＡＮ側回線を切り替える手順について図２を参照して説明する。   The WAN side line selection function of the control unit 14 is a standard function. In this embodiment, the procedure for switching the WAN side line according to the link state of the WAN side Ethernet connection unit 15 will be described with reference to FIG.

図２(1) は、ＷＡＮ側回線がイーサネット回線でないときのＷＡＮ側回線切替手順を示す。制御部１４は、ＷＡＮ側無線ＬＡＮ接続部１１またはＷＡＮ側携帯電話接続部１２を選択し、無線ＬＡＮ回線または携帯電話回線を介してネットワークへの中継処理を行っているとき（Ｓ１）、すなわち無線中継装置１０が持ち出されて使用されているときに、リンク状態監視部１６からイーサネットポートの状態変化の通知を待ち受ける（Ｓ２）。なお、後述するＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２が省電力動作中であっても、イーサネットポートの状態変化の通知を待ち受ける。   FIG. 2 (1) shows a WAN side line switching procedure when the WAN side line is not an Ethernet line. The control unit 14 selects the WAN-side wireless LAN connection unit 11 or the WAN-side mobile phone connection unit 12 and performs relay processing to the network via the wireless LAN line or the mobile phone line (S1), that is, wireless When the relay device 10 is taken out and used, it waits for notification of a change in the state of the Ethernet port from the link state monitoring unit 16 (S2). Note that even if the WAN-side wireless LAN connection unit 11 and the WAN-side mobile phone connection unit 12 to be described later are in a power saving operation, they wait for notification of a change in the state of the Ethernet port.

ここで、イーサネットポートがリンクアップしたことが通知されると、ＷＡＮ側無線ＬＡＮ接続部１１またはＷＡＮ側携帯電話接続部１２からＷＡＮ側イーサネット接続部１５への接続に切り替える（Ｓ３）。ＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２が省電力動作中であれば、そのまま省電力動作を継続する。これにより、例えばＷＡＮ側で無線ＬＡＮ回線または携帯電話回線に接続している外出先から自宅に戻り、無線中継装置１０のＷＡＮ側イーサネット接続部１５にイーサネットケーブルを接続しただけで、ＷＡＮ側回線を無線ＬＡＮ回線または携帯電話回線からイーサネット回線へ切り替え、有線ＬＡＮで接続されるルータ３４を介してネットワーク３３への中継処理を行うことができる。   When it is notified that the Ethernet port has been linked up, the connection is switched from the WAN side wireless LAN connection unit 11 or the WAN side mobile phone connection unit 12 to the WAN side Ethernet connection unit 15 (S3). If the WAN-side wireless LAN connection unit 11 and the WAN-side mobile phone connection unit 12 are in the power saving operation, the power saving operation is continued as it is. Thereby, for example, the WAN side returns to the home from the outside connected to the wireless LAN line or the mobile phone line on the WAN side, and the WAN side line is simply connected to the WAN side Ethernet connection unit 15 of the wireless relay device 10. It is possible to switch from a wireless LAN line or a cellular phone line to an Ethernet line, and perform relay processing to the network 33 via a router 34 connected by a wired LAN.

図２(2) は、ＷＡＮ側回線がイーサネット回線のときのＷＡＮ側回線切替手順を示す。制御部１４は、ＷＡＮ側イーサネット接続部１５を選択し、イーサネット回線を介してネットワークへの中継処理を行っているとき（Ｓ４）、すなわち無線中継装置１０が家庭用アクセスポイントとして使用されているときに、リンク状態監視部１６からイーサネットポートの状態変化の通知を待ち受ける（Ｓ５）。   FIG. 2 (2) shows a WAN side line switching procedure when the WAN side line is an Ethernet line. The control unit 14 selects the WAN-side Ethernet connection unit 15 and performs relay processing to the network via the Ethernet line (S4), that is, when the wireless relay device 10 is used as a home access point. Then, it waits for notification of a change in the state of the Ethernet port from the link state monitoring unit 16 (S5).

ここで、イーサネットポートがリンクダウンしたことが通知されると、例えば自宅外に持ち出したためにＷＡＮ側回線を無線ＬＡＮ回線または携帯電話回線に切り替える必要が生じるが、その前に制御部１４は端末接続状態監視部１７に対して、ＬＡＮ側無線ＬＡＮ接続部１３に無線ＬＡＮ端末２０が接続しているか否かを問い合わせる（Ｓ６）。ここで、無線ＬＡＮ端末２０の接続が確認されれば、ＷＡＮ側イーサネット接続部１５からＷＡＮ側無線ＬＡＮ接続部１１またはＷＡＮ側携帯電話接続部１２を介する無線通信回線への接続に切り替える（Ｓ７）。なお、ＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２が省電力動作中であれば、通常動作に戻して無線ＬＡＮ回線または携帯電話回線への接続処理を行う。また、ＷＡＮ側回線として無線ＬＡＮ回線と携帯電話回線の選択は、上述した既存の機能を用いて決定される。   Here, when the Ethernet port is notified that the link is down, for example, the WAN side line needs to be switched to a wireless LAN line or a mobile phone line because it is taken out of the house. Before that, the control unit 14 connects to the terminal. The state monitoring unit 17 is inquired whether the wireless LAN terminal 20 is connected to the LAN side wireless LAN connection unit 13 (S6). Here, if the connection of the wireless LAN terminal 20 is confirmed, the WAN-side Ethernet connection unit 15 switches to the connection to the wireless communication line via the WAN-side wireless LAN connection unit 11 or the WAN-side mobile phone connection unit 12 (S7). . If the WAN side wireless LAN connection unit 11 and the WAN side mobile phone connection unit 12 are in a power saving operation, the normal operation is restored and connection processing to the wireless LAN line or the mobile phone line is performed. The selection of the wireless LAN line and the cellular phone line as the WAN side line is determined using the existing function described above.

一方、無線ＬＡＮ端末２０が接続されていない場合には、例えば自宅外に持ち出したものの無線ＬＡＮ端末２０が稼働していない状態では、ＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２を休止して省電力動作に設定し（Ｓ８）、無線ＬＡＮ端末２０が接続されるまで継続する。これにより、無線中継装置１０がイーサネット回線に接続されず、かつ無線ＬＡＮ端末２０とも接続されていない状態では、ＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２における消費電力を抑えることができる。なお、ＷＡＮ側無線ＬＡＮ接続部１１およびＷＡＮ側携帯電話接続部１２が省電力動作中であっても、図２(1) に示すように、イーサネットポートのリンクアップがあればイーサネット回線への切り替えが行われる。   On the other hand, when the wireless LAN terminal 20 is not connected, for example, when the wireless LAN terminal 20 is taken out of the house but is not in operation, the WAN wireless LAN connection unit 11 and the WAN mobile phone connection unit 12 are connected. It pauses and is set to a power saving operation (S8), and continues until the wireless LAN terminal 20 is connected. As a result, when the wireless relay device 10 is not connected to the Ethernet line and is not connected to the wireless LAN terminal 20, the power consumption in the WAN side wireless LAN connection unit 11 and the WAN side mobile phone connection unit 12 can be suppressed. it can. Even if the WAN side wireless LAN connection unit 11 and the WAN side mobile phone connection unit 12 are in power saving operation, as shown in FIG. 2 (1), if there is link up of the Ethernet port, switching to the Ethernet line is possible. Is done.

本発明の実施例は、無線中継装置１０のＷＡＮ側とＬＡＮ側でともに無線ＬＡＮを使用する場合、周辺の無線ＬＡＮ端末との間の干渉に加えて、ＷＡＮ側無線ＬＡＮ接続部１１とＬＡＮ側無線ＬＡＮ接続部１３の近接による干渉を考慮し、無線中継装置１０のＷＡＮ側がイーサネット回線か無線ＬＡＮ回線かに応じて、ＬＡＮ側の所要の回線品質を確保しながら、ＬＡＮ側とＷＡＮ側の無線ＬＡＮ同士の干渉回避を実現するものである。   In the embodiment of the present invention, when both a WAN side and a LAN side of the wireless relay device 10 use a wireless LAN, in addition to interference with peripheral wireless LAN terminals, the WAN side wireless LAN connection unit 11 and the LAN side Considering the interference due to the proximity of the wireless LAN connection unit 13, depending on whether the WAN side of the wireless relay device 10 is an Ethernet line or a wireless LAN line, the wireless side of the LAN side and the WAN side is secured while ensuring the required line quality on the LAN side. It is intended to avoid interference between LANs.

図３は、本発明の無線中継装置の実施例の構成を示す。
図３において、本実施例の無線中継装置１０は、図６に示す構成に加えてＷＡＮ側イーサネット接続部１５および制御部１４に接続されるリンク状態監視部１６と、ＬＡＮ側無線ＬＡＮ接続部１３および制御部１４に接続される電力制御部１８とを備える。 FIG. 3 shows the configuration of an embodiment of the wireless relay device of the present invention.
3, in addition to the configuration shown in FIG. 6, the wireless relay device 10 of this embodiment includes a link state monitoring unit 16 connected to the WAN side Ethernet connection unit 15 and the control unit 14, and a LAN side wireless LAN connection unit 13. And a power control unit 18 connected to the control unit 14.

リンク状態監視部１６は、ＷＡＮ側イーサネット接続部１５のリンク状態を監視し、イーサネットポートのリンクアップとリンクダウンの接続状態を制御部１４に通知する。電力制御部１８は、ＬＡＮ側無線ＬＡＮ接続部１３の送信電力を制御する。ここでは、２段階の送信電力を想定し、基準値より所定値だけ高い送信電力、基準値より所定値だけ低い送信電力とする。高い送信電力は、一般的な家屋の間取りに対して隅々で所定の通信品質を確保できる値である。低い送信電力は、ＷＡＮ側の無線ＬＡＮ信号に対して干渉を最小限に抑えることができる値である。   The link status monitoring unit 16 monitors the link status of the WAN-side Ethernet connection unit 15 and notifies the control unit 14 of the connection status of the Ethernet port link up and link down. The power control unit 18 controls the transmission power of the LAN side wireless LAN connection unit 13. Here, assuming two-stage transmission power, the transmission power is higher by a predetermined value than the reference value, and the transmission power is lower by the predetermined value than the reference value. The high transmission power is a value that can ensure a predetermined communication quality at every corner of a typical house layout. The low transmission power is a value that can minimize interference with the wireless LAN signal on the WAN side.

図４は、実施例の処理手順を示す。
図４において、制御部１４は、リンク状態監視部１６からイーサネットポートの接続状態を取得し（Ｓ11）、リンクアップ中か否かを判断する（Ｓ12）。リンクアップ中であれば、電力制御部１８に対してＬＡＮ側無線ＬＡＮ接続部１３の送信電力を「高い送信電力」に設定する（Ｓ13）。リンクダウン中であれば、電力制御部１８に対してＬＡＮ側無線ＬＡＮ接続部１３の送信電力を「低い送信電力」に設定する（Ｓ14）。 FIG. 4 shows a processing procedure of the embodiment.
In FIG. 4, the control unit 14 acquires the connection state of the Ethernet port from the link state monitoring unit 16 (S11), and determines whether the link is up (S12). If the link is up, the transmission power of the LAN side wireless LAN connection unit 13 is set to “high transmission power” for the power control unit 18 (S13). If the link is down, the transmission power of the LAN side wireless LAN connection unit 13 is set to “low transmission power” for the power control unit 18 (S14).

１０ 無線中継装置
１１ ＷＡＮ側無線ＬＡＮ接続部
１２ ＷＡＮ側携帯電話接続部
１３ ＬＡＮ側無線ＬＡＮ接続部
１４ 制御部
１５ ＷＡＮ側イーサネット接続部
１６ リンク状態監視部
１７ 端末接続状態監視部
１８ 電力制御部
２０ 無線ＬＡＮ端末 DESCRIPTION OF SYMBOLS 10 Wireless relay apparatus 11 WAN side wireless LAN connection part 12 WAN side mobile telephone connection part 13 LAN side wireless LAN connection part 14 Control part 15 WAN side Ethernet connection part 16 Link state monitoring part 17 Terminal connection state monitoring part 18 Power control part 20 Wireless LAN terminal

Claims (2)

無線通信回線および有線ＬＡＮ回線を含む複数のＷＡＮ側回線の１つを選択し、そのＷＡＮ側回線に接続されるネットワークとＬＡＮ側で無線ＬＡＮ接続される無線ＬＡＮ端末との中継処理を行う制御部を備えた無線中継装置において、
前記有線ＬＡＮ回線のリンク状態を監視し、前記有線ＬＡＮ回線のリンクアップとリンクダウンの状態の変化を検出したときに、当該リンク状態を前記制御部に通知するリンク状態監視部と、
前記無線ＬＡＮ端末に対する送信電力を制御する電力制御部とを備え、
前記制御部は、前記リンク状態監視部から前記有線ＬＡＮ回線のリンク状態を取得し、前記有線ＬＡＮ回線に接続しているときは前記電力制御部に対して前記送信電力を基準値から所定値だけアップさせる制御を行い、前記有線ＬＡＮ回線に接続していないときは前記電力制御部に対して前記送信電力を基準値から所定値だけダウンさせる制御を行う構成である
ことを特徴とする無線中継装置。 A control unit that selects one of a plurality of WAN-side lines including a wireless communication line and a wired LAN line, and performs a relay process between a network connected to the WAN-side line and a wireless LAN terminal connected to the LAN on the LAN side In a wireless relay device comprising:
A link state monitoring unit that monitors the link state of the wired LAN line and detects the link state to the control unit when detecting a change in the link up and link down state of the wired LAN line ;
A power control unit for controlling transmission power to the wireless LAN terminal,
Wherein the control unit acquires the link status of the wired LAN line from said link state monitoring unit, by a predetermined value the transmission power from a reference value for the power control unit when connected to the wired LAN line performs control to up, when not connected to the wired LAN line wireless relay apparatus which is a configuration for performing control to down by the predetermined value from a reference value the transmission power to the power control unit . 無線通信回線および有線ＬＡＮ回線を含む複数のＷＡＮ側回線の１つを選択し、そのＷＡＮ側回線に接続されるネットワークとＬＡＮ側で無線ＬＡＮ接続される無線ＬＡＮ端末との中継処理を行う無線中継方法において、
リンク状態監視部で前記有線ＬＡＮ回線のリンク状態を監視し、前記有線ＬＡＮ回線のリンクアップとリンクダウンの状態の変化を検出したときに、当該リンク状態を前記制御部に通知し、
前記制御部は、前記リンク状態監視部から前記有線ＬＡＮ回線のリンク状態を取得し、前記有線ＬＡＮ回線に接続しているときは、前記無線ＬＡＮ端末に対する送信電力を制御する電力制御部に対して該送信電力を基準値から所定値だけアップさせる制御を行い、前記有線ＬＡＮ回線に接続していないときは、該電力制御部に対して該送信電力を基準値から所定値だけダウンさせる制御を行う
ことを特徴とする無線中継方法。 Wireless relay for selecting one of a plurality of WAN side lines including a wireless communication line and a wired LAN line and performing a relay process between a network connected to the WAN side line and a wireless LAN terminal connected to the LAN on the LAN side In the method
When the link status monitoring unit monitors the link status of the wired LAN line and detects a change in the link up and link down status of the wired LAN line, the link status is notified to the control unit,
The control unit obtains the link state of the wired LAN line from the link state monitoring unit, and when connected to the wired LAN line, the control unit controls the transmission power to the wireless LAN terminal. performs control for up the transmission power from the reference value by a predetermined value, wherein, when not connected to a wired LAN line, performs control to down by the predetermined value from the reference value the transmission power relative to the power control unit And a wireless relay method.
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