JP5356461B2 - Radio relay apparatus and radio relay method - Google Patents

Radio relay apparatus and radio relay method Download PDF

Info

Publication number
JP5356461B2
JP5356461B2 JP2011155878A JP2011155878A JP5356461B2 JP 5356461 B2 JP5356461 B2 JP 5356461B2 JP 2011155878 A JP2011155878 A JP 2011155878A JP 2011155878 A JP2011155878 A JP 2011155878A JP 5356461 B2 JP5356461 B2 JP 5356461B2
Authority
JP
Japan
Prior art keywords
wireless lan
unit
mobile communication
network
communication network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2011155878A
Other languages
Japanese (ja)
Other versions
JP2013021651A (en
Inventor
朗 岸田
誠 梅内
利裕 眞部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2011155878A priority Critical patent/JP5356461B2/en
Publication of JP2013021651A publication Critical patent/JP2013021651A/en
Application granted granted Critical
Publication of JP5356461B2 publication Critical patent/JP5356461B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio relay device that performs handover from a mobile communication network to a wireless LAN. <P>SOLUTION: A radio relay device comprises: a local side wireless LAN-IF unit for connecting to a wireless LAN terminal; a network side wireless LAN-IF unit for connecting to a network side wireless LAN; a mobile communication network-IF unit for connecting to a mobile communication network; and control means. The control means stops the network side wireless LAN-IF unit when relay processing is performed between the local side wireless LAN-IF unit and the mobile communication network-IF unit, searches for a network side wireless LAN channel during an idle time when the local side wireless LAN-IF unit is not performing data communication, and if it has detected a connectable wireless LAN channel and its reception level exceeds a threshold value, perform handover to the wireless LAN channel by activating the network side wireless LAN-IF unit. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

本発明は、ローカル側の無線ＬＡＮ端末と、ネットワーク側の無線ＬＡＮまたは移動通信網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。ここで、ネットワーク側の移動通信網は、例えば第３世代、第3.5 世代、第3.9 世代の携帯電話網であり、その規格としては、例えばＨＳＰＡ（High speed packet access) 、ＷＣＤＭＡ（Wide band code division multiple access)、ＥＤＧＥ（Enhanced data rates for GSM evolution)、ＬＴＥ（Long Term Evolution ）などである。   The present invention relates to a radio relay apparatus and a radio relay method for performing a relay process between a local side wireless LAN terminal and a network side wireless LAN or a mobile communication network. Here, the mobile communication network on the network side is, for example, a 3rd generation, 3.5th generation, or 3.9th generation mobile phone network. Examples of the standards include HSPA (High speed packet access), WCDMA (Wide band code division). multiple access), EDGE (Enhanced data rates for GSM evolution), LTE (Long Term Evolution), and the like.

ＨＳＰＡ等の移動通信網と無線ＬＡＮを比較した場合、一般的に移動通信網はカバーエリアが広いが通信速度は遅く、無線ＬＡＮはカバーエリアが狭いが通信速度は速いという特徴がある。そこで、移動通信網と無線ＬＡＮのそれぞれの特徴を活かすために、移動通信網と無線ＬＡＮにそれぞれ接続できる無線ＩＦを備え、通常は無線ＬＡＮ端末を移動通信網に接続しながら、無線ＬＡＮとの接続が可能な状況になれば無線ＬＡＮに切り替える無線中継装置がある（特許文献１）。   When comparing a mobile communication network such as HSPA with a wireless LAN, the mobile communication network generally has a wide cover area but a low communication speed, and the wireless LAN has a feature that the cover area is narrow but the communication speed is high. Therefore, in order to take advantage of the features of the mobile communication network and the wireless LAN, a wireless IF that can be connected to the mobile communication network and the wireless LAN is provided. There is a wireless relay device that switches to a wireless LAN when a connection is possible (Patent Document 1).

この場合の移動通信網と無線ＬＡＮのハンドオーバ方法として、無線ＬＡＮの受信レベル（ＲＳＳＩ）を監視し、当該ＲＳＳＩが閾値以下であれば移動通信網に接続し、当該ＲＳＳＩが閾値を超えれば無線ＬＡＮに接続する方法がある。   As a handover method between the mobile communication network and the wireless LAN in this case, the reception level (RSSI) of the wireless LAN is monitored, and if the RSSI is equal to or less than the threshold, the mobile communication network is connected. If the RSSI exceeds the threshold, the wireless LAN is connected. There is a way to connect to.

図４は、従来の無線中継装置の構成例を示す。
図４において、無線中継装置は、無線ＬＡＮのアクセスポイント（ＡＰ）に接続するネットワーク側無線ＬＡＮ−ＩＦ部１１および移動通信網の基地局（ＢＳ）に接続する移動通信網−ＩＦ部１２と、無線ＬＡＮ端末に接続するローカル側無線ＬＡＮ−ＩＦ部１３と、ネットワーク側無線ＬＡＮ−ＩＦ部１１に接続して無線ＬＡＮの受信レベル（ＲＳＳＩ）を検出する受信レベル検出部１４と、ネットワーク側の無線ＬＡＮのＲＳＳＩに応じて、ネットワーク側無線ＬＡＮ−ＩＦ部１１または移動通信網−ＩＦ部１２を選択（またはハンドオーバ）してローカル側無線ＬＡＮ−ＩＦ部１３に接続する制御部１５とを備える。 FIG. 4 shows a configuration example of a conventional wireless relay device.
In FIG. 4, the wireless relay device includes a network-side wireless LAN-IF unit 11 connected to a wireless LAN access point (AP), a mobile communication network-IF unit 12 connected to a base station (BS) of the mobile communication network, A local side wireless LAN-IF unit 13 connected to the wireless LAN terminal, a reception level detection unit 14 connected to the network side wireless LAN-IF unit 11 to detect a reception level (RSSI) of the wireless LAN, and a wireless on the network side A control unit 15 that selects (or hands over) the network-side wireless LAN-IF unit 11 or the mobile communication network-IF unit 12 and connects to the local-side wireless LAN-IF unit 13 according to the RSSI of the LAN.

図５は、従来のハンドオーバ処理手順の例を示す。
図５において、現在のネットワーク側の接続先が無線ＬＡＮか移動通信網かに応じて（Ｓ20）、無線ＬＡＮに接続している場合には、受信レベル検出部１４で定期的に検出される無線ＬＡＮのＲＳＳＩが閾値以下か否かを判断する（Ｓ21）。ＲＳＳＩが閾値以下の場合には、移動通信網へのハンドオーバを行い（Ｓ22）、ＲＳＳＩが閾値を超える場合には無線ＬＡＮに接続しながらＲＳＳＩの閾値判定を繰り返す。 FIG. 5 shows an example of a conventional handover processing procedure.
In FIG. 5, depending on whether the current network-side connection destination is a wireless LAN or a mobile communication network (S20), when the wireless LAN is connected to the wireless LAN, the reception level detector 14 periodically detects the wireless connection. It is determined whether the RSSI of the LAN is equal to or less than a threshold value (S21). If the RSSI is less than or equal to the threshold, handover to the mobile communication network is performed (S22). If the RSSI exceeds the threshold, the RSSI threshold determination is repeated while connecting to the wireless LAN.

また、移動通信網に接続している場合には、ネットワーク側無線ＬＡＮ−ＩＦ部１１を定期的に起動して接続可能な無線ＬＡＮチャネルを探索し（Ｓ23）、受信レベル検出部１４で検出される無線ＬＡＮのＲＳＳＩが閾値を超えたか否かを判断する（Ｓ24）。ＲＳＳＩが閾値を超えた場合には無線ＬＡＮへのハンドオーバを行い（Ｓ25）、ＲＳＳＩが閾値以下の場合には移動通信網に接続しながら定期的に無線ＬＡＮチャネルを探索し、ＲＳＳＩの閾値判定を繰り返す。   When connected to the mobile communication network, the network side wireless LAN-IF unit 11 is periodically activated to search for a connectable wireless LAN channel (S23) and detected by the reception level detection unit 14. It is determined whether or not the RSSI of the wireless LAN exceeds the threshold (S24). When the RSSI exceeds the threshold, handover to the wireless LAN is performed (S25). When the RSSI is equal to or less than the threshold, the wireless LAN channel is periodically searched while connected to the mobile communication network, and the RSSI threshold is determined. repeat.

これにより、無線ＬＡＮのＲＳＳＩが閾値以下であれば移動通信網に接続し、ＲＳＳＩが閾値を超えれば無線ＬＡＮに接続することができる。例えば、図６に示すように、移動通信網エリア内に無線ＬＡＮエリアが局所的に存在しているときに、無線中継装置が無線ＬＡＮエリア外にあって無線ＬＡＮのＲＳＳＩが閾値以下であれば移動通信網に接続し、無線中継装置が移動して無線ＬＡＮエリア内に入り、無線ＬＡＮチャネルを探索してＲＳＳＩが閾値を超えれば無線ＬＡＮに接続される。   Thereby, if the RSSI of the wireless LAN is equal to or less than the threshold, the mobile communication network can be connected, and if the RSSI exceeds the threshold, the wireless LAN can be connected. For example, as shown in FIG. 6, when a wireless LAN area exists locally in a mobile communication network area, if the wireless relay device is outside the wireless LAN area and the RSSI of the wireless LAN is equal to or less than a threshold value, When the wireless relay device moves into the wireless LAN area by connecting to the mobile communication network and searches for the wireless LAN channel and the RSSI exceeds the threshold, the wireless LAN is connected to the wireless LAN.

特開２０１０−０２１８７８号公報JP 2010-021878 A

ところで、移動通信網に接続中の無線中継装置は、移動通信網−ＩＦ部１２とローカル側無線ＬＡＮ−ＩＦ部１３との間で中継処理しながら、図７に示すようにネットワーク側無線ＬＡＮ−ＩＦ部１１を定期的に起動して接続可能な無線ＬＡＮチャネルを探索するとともに、受信レベル検出部１４で無線ＬＡＮのＲＳＳＩを検出する動作を行っている。そのため、ネットワーク側無線ＬＡＮ−ＩＦ部１１は、移動通信網−ＩＦ部１２が動作中に完全に休止することができなかった。   By the way, the wireless relay device connected to the mobile communication network performs a relay process between the mobile communication network-IF unit 12 and the local side wireless LAN-IF unit 13, and as shown in FIG. The IF unit 11 is periodically activated to search for connectable wireless LAN channels, and the reception level detection unit 14 performs an operation of detecting the RSSI of the wireless LAN. For this reason, the network-side wireless LAN-IF unit 11 cannot be completely suspended while the mobile communication network-IF unit 12 is operating.

一方、ローカル側無線ＬＡＮ−ＩＦ部１３の通信速度が移動通信網−ＩＦ部１２より高速であるため、同じサイズのデータ転送時間は無線ＬＡＮ側の方が短い。したがって、図７に示すように、移動通信網−ＩＦ部１２のデータ通信が終了するまでは、ローカル側無線ＬＡＮ−ＩＦ部１３は待機状態となる。すなわち、ローカル側無線ＬＡＮ−ＩＦ部１３は起動中であるが、データ通信を行わない空き時間となっていた。   On the other hand, since the communication speed of the local wireless LAN-IF unit 13 is higher than that of the mobile communication network-IF unit 12, the data transfer time of the same size is shorter on the wireless LAN side. Therefore, as shown in FIG. 7, the local wireless LAN-IF unit 13 is in a standby state until the data communication of the mobile communication network-IF unit 12 is completed. That is, the local wireless LAN-IF unit 13 is being activated, but it is a free time during which data communication is not performed.

本発明は、ネットワーク側で移動通信網に接続中のときに、ネットワーク側無線ＬＡＮ−ＩＦ部を完全に休止させながら、他の無線ＬＡＮチャネルの探索を可能に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 provides a wireless relay device and a wireless relay method that enable searching for another wireless LAN channel while completely suspending the network-side wireless LAN-IF unit when the network side is connected to a mobile communication network. The purpose is to provide.

第１の発明は、無線ＬＡＮ端末に接続するローカル側無線ＬＡＮ−ＩＦ部と、ネットワーク側の無線ＬＡＮに接続するネットワーク側無線ＬＡＮ−ＩＦ部または移動通信網に接続する移動通信網−ＩＦ部との間で中継処理を行い、かつネットワーク側の無線ＬＡＮの受信レベルに応じてネットワーク側の無線ＬＡＮと移動通信網との間でハンドオーバを行う制御手段を備えた無線中継装置において、制御手段は、ローカル側無線ＬＡＮ−ＩＦ部と移動通信網−ＩＦ部との間で中継処理を行っているときにネットワーク側無線ＬＡＮ−ＩＦ部を休止するとともに、ローカル側無線ＬＡＮ−ＩＦ部と移動通信網−ＩＦ部の通信速度の差によりローカル側無線ＬＡＮ−ＩＦ部がデータ通信を行っていない空き時間にネットワーク側の無線ＬＡＮチャネルの探索を行い、接続可能な無線ＬＡＮチャネルを検出してその受信レベルが閾値を超えれば、ネットワーク側無線ＬＡＮ−ＩＦ部を起動して当該無線ＬＡＮチャネルにハンドオーバを行う構成である。 The first invention includes a local wireless LAN-IF unit connected to a wireless LAN terminal, a network wireless LAN-IF unit connected to a wireless LAN on the network side, or a mobile communication network-IF unit connected to a mobile communication network In the wireless relay device comprising the control means for performing a relay process between the network side and performing a handover between the network side wireless LAN and the mobile communication network in accordance with the reception level of the network side wireless LAN, the control means comprises: While performing the relay processing between the local side wireless LAN-IF unit and the mobile communication network-IF unit, the network side wireless LAN-IF unit is suspended and the local side wireless LAN-IF unit and the mobile communication network- the idle time of the local side wireless LAN-IF unit does not perform data communication by the difference of the communication speed of the IF part of the network-side wireless LAN Cha It carries out the search of the Le, if it exceeds the detected that the reception level is a threshold that can be connected wireless LAN channel, start a network side wireless LAN-IF unit is configured to perform a handover to the wireless LAN channels.

第２の発明は、無線ＬＡＮ端末に接続するローカル側無線ＬＡＮ−ＩＦ部と、ネットワーク側の無線ＬＡＮに接続するネットワーク側無線ＬＡＮ−ＩＦ部または移動通信網に接続する移動通信網−ＩＦ部との間で中継処理を行い、かつネットワーク側の無線ＬＡＮの受信レベルに応じてネットワーク側の無線ＬＡＮと移動通信網との間でハンドオーバを行う制御手段を備えた無線中継装置の無線中継方法において、制御手段は、ローカル側無線ＬＡＮ−ＩＦ部と移動通信網−ＩＦ部との間で中継処理を行っているときにネットワーク側無線ＬＡＮ−ＩＦ部を休止するとともに、ローカル側無線ＬＡＮ−ＩＦ部と移動通信網−ＩＦ部の通信速度の差によりローカル側無線ＬＡＮ−ＩＦ部がデータ通信を行っていない空き時間にネットワーク側の無線ＬＡＮチャネルの探索を行い、接続可能な無線ＬＡＮチャネルを検出してその受信レベルが閾値を超えれば、ネットワーク側無線ＬＡＮ−ＩＦ部を起動して当該無線ＬＡＮチャネルにハンドオーバを行う。
The second invention includes a local wireless LAN-IF unit connected to a wireless LAN terminal, a network wireless LAN-IF unit connected to a wireless LAN on the network side, or a mobile communication network-IF unit connected to a mobile communication network, In the wireless relay method of the wireless relay device, comprising a control means for performing a relay process between the network side and performing a handover between the network side wireless LAN and the mobile communication network according to the reception level of the network side wireless LAN, The control unit pauses the network side wireless LAN-IF unit when performing relay processing between the local side wireless LAN-IF unit and the mobile communication network -IF unit, and the difference in the communication speed of the mobile communication network -IF unit local side wireless LAN-IF unit of the network side in idle time not communicating data It carries out the search line LAN channel, if it exceeds the reception level is a threshold value to detect a connectable wireless LAN channel, performs a handover to the wireless LAN channel to start the network side wireless LAN-IF unit.

本発明は、ローカル側無線ＬＡＮ−ＩＦ部と移動通信網−ＩＦ部との間で中継処理を行っているときに、両者の通信速度の差によるローカル側無線ＬＡＮ−ＩＦ部の空き時間を利用してネットワーク側の無線ＬＡＮチャネルの探索を代行させることにより、ネットワーク側無線ＬＡＮ−ＩＦ部を完全に休止させることができる。これにより、移動通信網に接続中の消費電力を低減することができるとともに、ネットワーク側の無線ＬＡＮチャネルの探索も可能であるので、移動通信網から無線ＬＡＮへのハンドオーバも確実に行うことができる。   In the present invention, when relay processing is performed between the local side wireless LAN-IF unit and the mobile communication network-IF unit, the free time of the local side wireless LAN-IF unit due to the difference in communication speed between the two is used. By substituting for the search for the wireless LAN channel on the network side, the network side wireless LAN-IF unit can be completely suspended. As a result, power consumption during connection to the mobile communication network can be reduced, and a wireless LAN channel on the network side can be searched, so that handover from the mobile communication network to the wireless LAN can be performed reliably. .

本発明の無線中継装置の実施例を示す図である。It is a figure which shows the Example of the radio relay apparatus of this invention. 本発明における無線ＬＡＮチャネルの探索例を示すタイムチャートである。It is a time chart which shows the example of a search of the wireless LAN channel in this invention. 本発明におけるハンドオーバ処理手順の例を示すフローチャートである。It is a flowchart which shows the example of the handover process procedure in this invention. 従来の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 the conventional wireless relay apparatus. 従来のハンドオーバ処理手順の例を示すフローチャートである。It is a flowchart which shows the example of the conventional handover processing procedure. 移動通信網と無線ＬＡＮの関係を説明する図である。It is a figure explaining the relationship between a mobile communication network and wireless LAN. 移動通信網に接続中における無線ＬＡＮチャネルの探索例を示すタイムチャートである。It is a time chart which shows the example of a search of the wireless LAN channel in connecting with a mobile communication network.

図１は、本発明の無線中継装置の実施例を示す。
図１において、無線中継装置を構成するネットワーク側無線ＬＡＮ−ＩＦ部１１、移動通信網−ＩＦ部１２、ローカル側無線ＬＡＮ−ＩＦ部１３、受信レベル検出部１４は、従来の無線中継装置と同様の機能を有する。ただし、受信レベル検出部１４は、ローカル側無線ＬＡＮ−ＩＦ１３で検出されるネットワーク側の無線ＬＡＮのＲＳＳＩを検出する機能も有する。 FIG. 1 shows an embodiment of a wireless relay device of the present invention.
In FIG. 1, the network side wireless LAN-IF unit 11, the mobile communication network-IF unit 12, the local side wireless LAN-IF unit 13, and the reception level detection unit 14 constituting the wireless relay device are the same as those of the conventional wireless relay device. It has the function of. However, the reception level detection unit 14 also has a function of detecting the RSSI of the network-side wireless LAN detected by the local-side wireless LAN-IF 13.

本実施例の無線中継装置の制御部１５は、移動通信網−ＩＦ部１２とローカル側無線ＬＡＮ−ＩＦ部１３との間で中継処理を行っているときに、図２に示すように、ネットワーク側無線ＬＡＮ−ＩＦ部１１を休止する。さらに、制御部１５は、ローカル側無線ＬＡＮ−ＩＦ部１３の空き時間を利用してネットワーク側の無線ＬＡＮチャネルの探索を行い、受信レベル検出部１４で検出される無線ＬＡＮのＲＳＳＩに応じて、ネットワーク側の移動通信網から無線ＬＡＮへのハンドオーバを制御する処理を行う。   As shown in FIG. 2, the control unit 15 of the wireless relay apparatus according to the present embodiment performs a relay process between the mobile communication network-IF unit 12 and the local wireless LAN-IF unit 13 as shown in FIG. The side wireless LAN-IF unit 11 is suspended. Further, the control unit 15 searches for a wireless LAN channel on the network side using the free time of the local side wireless LAN-IF unit 13, and according to the RSSI of the wireless LAN detected by the reception level detection unit 14, Processing for controlling handover from the mobile communication network on the network side to the wireless LAN is performed.

図３は、本発明におけるハンドオーバ処理手順の例を示す。
図３において、現在のネットワーク側の接続先が無線ＬＡＮか移動通信網かに応じて（Ｓ10）、無線ＬＡＮに接続している場合には、受信レベル検出部１４で定期的に検出される無線ＬＡＮのＲＳＳＩが閾値以下か否かを判断する（Ｓ11）。ＲＳＳＩが閾値以下の場合には、移動通信網へのハンドオーバを行い（Ｓ12）、ネットワーク側無線ＬＡＮ−ＩＦ部１１を休止する（Ｓ13）。一方、ＲＳＳＩが閾値を超える場合には無線ＬＡＮに接続しながらＲＳＳＩの閾値判定を繰り返す。 FIG. 3 shows an example of a handover processing procedure in the present invention.
In FIG. 3, depending on whether the current network side connection destination is a wireless LAN or a mobile communication network (S10), when the wireless LAN is connected to the wireless LAN, the reception level detector 14 periodically detects the wireless connection. It is determined whether the RSSI of the LAN is equal to or less than a threshold value (S11). If the RSSI is less than or equal to the threshold value, a handover to the mobile communication network is performed (S12), and the network side wireless LAN-IF unit 11 is suspended (S13). On the other hand, if the RSSI exceeds the threshold, the RSSI threshold determination is repeated while connecting to the wireless LAN.

また、移動通信網に接続している場合には、ローカル側無線ＬＡＮ−ＩＦ部１３の空き時間を利用して接続可能な無線ＬＡＮチャネルを探索し（Ｓ14）、受信レベル検出部１４で検出される無線ＬＡＮのＲＳＳＩが閾値を超えたか否かを判断する（Ｓ15）。ＲＳＳＩが閾値を超えた場合にはネットワーク側無線ＬＡＮ−ＩＦ部１１を起動し（Ｓ16）、探索した無線ＬＡＮチャネルへのハンドオーバを行う（Ｓ17）。一方、ＲＳＳＩが閾値以下の場合には移動通信網に接続しながら、ローカル側無線ＬＡＮ−ＩＦ部１３の空き時間を利用して接続可能な無線ＬＡＮチャネルを探索し、ＲＳＳＩの閾値判定を繰り返す。   When connected to the mobile communication network, the available wireless LAN channel is searched using the free time of the local wireless LAN-IF unit 13 (S14) and detected by the reception level detection unit 14. It is determined whether or not the RSSI of the wireless LAN exceeds the threshold (S15). When the RSSI exceeds the threshold value, the network side wireless LAN-IF unit 11 is activated (S16), and a handover to the searched wireless LAN channel is performed (S17). On the other hand, when the RSSI is equal to or less than the threshold value, the wireless LAN channel that can be connected is searched using the idle time of the local wireless LAN-IF unit 13 while connecting to the mobile communication network, and the RSSI threshold value determination is repeated.

１１ 無線ＬＡＮ−ＩＦ部
１２ 移動通信網−ＩＦ部
１３ ローカル側無線ＬＡＮ−ＩＦ部
１４ 受信レベル検出部
１５ 制御部 DESCRIPTION OF SYMBOLS 11 Wireless LAN-IF part 12 Mobile communication network-IF part 13 Local side wireless LAN-IF part 14 Reception level detection part 15 Control part

Claims (2)

無線ＬＡＮ端末に接続するローカル側無線ＬＡＮ−ＩＦ部と、ネットワーク側の無線ＬＡＮに接続するネットワーク側無線ＬＡＮ−ＩＦ部または移動通信網に接続する移動通信網−ＩＦ部との間で中継処理を行い、かつネットワーク側の無線ＬＡＮの受信レベルに応じてネットワーク側の無線ＬＡＮと移動通信網との間でハンドオーバを行う制御手段を備えた無線中継装置において、
前記制御手段は、前記ローカル側無線ＬＡＮ−ＩＦ部と前記移動通信網−ＩＦ部との間で中継処理を行っているときに前記ネットワーク側無線ＬＡＮ−ＩＦ部を休止するとともに、前記ローカル側無線ＬＡＮ−ＩＦ部と前記移動通信網−ＩＦ部の通信速度の差により前記ローカル側無線ＬＡＮ−ＩＦ部がデータ通信を行っていない空き時間に前記ネットワーク側の無線ＬＡＮチャネルの探索を行い、接続可能な無線ＬＡＮチャネルを検出してその受信レベルが閾値を超えれば、前記ネットワーク側無線ＬＡＮ−ＩＦ部を起動して当該無線ＬＡＮチャネルにハンドオーバを行う構成である
ことを特徴とする無線中継装置。 Relay processing between the local side wireless LAN-IF unit connected to the wireless LAN terminal and the network side wireless LAN-IF unit connected to the wireless LAN on the network side or the mobile communication network-IF unit connected to the mobile communication network A wireless relay device comprising a control means for performing handover between the wireless LAN on the network side and the mobile communication network according to the reception level of the wireless LAN on the network side,
The control means is configured to pause the network side wireless LAN-IF unit when performing relay processing between the said mobile communication network -IF unit and the local side wireless LAN-IF unit, the local side wireless The network side wireless LAN channel can be searched and connected in the idle time when the local side wireless LAN-IF unit is not performing data communication due to the difference in communication speed between the LAN-IF unit and the mobile communication network -IF unit. When a wireless LAN channel is detected and its reception level exceeds a threshold, the network side wireless LAN-IF unit is activated to perform handover to the wireless LAN channel. 無線ＬＡＮ端末に接続するローカル側無線ＬＡＮ−ＩＦ部と、ネットワーク側の無線ＬＡＮに接続するネットワーク側無線ＬＡＮ−ＩＦ部または移動通信網に接続する移動通信網−ＩＦ部との間で中継処理を行い、かつネットワーク側の無線ＬＡＮの受信レベルに応じてネットワーク側の無線ＬＡＮと移動通信網との間でハンドオーバを行う制御手段を備えた無線中継装置の無線中継方法において、
前記制御手段は、前記ローカル側無線ＬＡＮ−ＩＦ部と前記移動通信網−ＩＦ部との間で中継処理を行っているときに前記ネットワーク側無線ＬＡＮ−ＩＦ部を休止するとともに、前記ローカル側無線ＬＡＮ−ＩＦ部と前記移動通信網−ＩＦ部の通信速度の差により前記ローカル側無線ＬＡＮ−ＩＦ部がデータ通信を行っていない空き時間に前記ネットワーク側の無線ＬＡＮチャネルの探索を行い、接続可能な無線ＬＡＮチャネルを検出してその受信レベルが閾値を超えれば、前記ネットワーク側無線ＬＡＮ−ＩＦ部を起動して当該無線ＬＡＮチャネルにハンドオーバを行う
ことを特徴とする無線中継方法。 Relay processing between the local side wireless LAN-IF unit connected to the wireless LAN terminal and the network side wireless LAN-IF unit connected to the wireless LAN on the network side or the mobile communication network-IF unit connected to the mobile communication network In a wireless relay method of a wireless relay device comprising a control means for performing handover between a wireless LAN on a network side and a mobile communication network according to a reception level of the wireless LAN on the network side,
The control means is configured to pause the network side wireless LAN-IF unit when performing relay processing between the said mobile communication network -IF unit and the local side wireless LAN-IF unit, the local side wireless The network side wireless LAN channel can be searched and connected in the idle time when the local side wireless LAN-IF unit is not performing data communication due to the difference in communication speed between the LAN-IF unit and the mobile communication network -IF unit. A wireless relay method characterized by detecting a simple wireless LAN channel and activating the network-side wireless LAN-IF unit to perform handover to the wireless LAN channel if the reception level exceeds a threshold value.
JP2011155878A 2011-07-14 2011-07-14 Radio relay apparatus and radio relay method Expired - Fee Related JP5356461B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011155878A JP5356461B2 (en) 2011-07-14 2011-07-14 Radio relay apparatus and radio relay method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011155878A JP5356461B2 (en) 2011-07-14 2011-07-14 Radio relay apparatus and radio relay method

Publications (2)

Publication Number Publication Date
JP2013021651A JP2013021651A (en) 2013-01-31
JP5356461B2 true JP5356461B2 (en) 2013-12-04

Family

ID=47692606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011155878A Expired - Fee Related JP5356461B2 (en) 2011-07-14 2011-07-14 Radio relay apparatus and radio relay method

Country Status (1)

Country Link
JP (1) JP5356461B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6082623B2 (en) * 2013-02-28 2017-02-15 株式会社Ｋｄｄｉ総合研究所 Terminal, communication system and computer program
CN103248688B (en) * 2013-04-27 2017-02-15 深圳市中新力电子科技有限公司 Access control method of vehicle-mounted intelligent terminal
US20170215121A1 (en) * 2016-01-21 2017-07-27 Veniam, Inc. Systems and methods for managing and triggering handovers of mobile access points in a network of moving things, for example including a network of autonomous vehicles
US10341927B2 (en) * 2017-07-20 2019-07-02 GM Global Technology Operations LLC Vehicle wireless unit and method of operating the same
WO2019048619A1 (en) * 2017-09-08 2019-03-14 Interdigital Ce Patent Holdings Selectively changing activation status of a wireless access point

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009177518A (en) * 2008-01-24 2009-08-06 Sharp Corp Communication device, program, cell search method, and recording medium
JP4527162B2 (en) * 2008-07-11 2010-08-18 エヌ・ティ・ティ・ブロードバンドプラットフォーム株式会社 Wireless relay device

Also Published As

Publication number Publication date
JP2013021651A (en) 2013-01-31

Similar Documents

Publication Publication Date Title
US10667162B2 (en) Bandwidth information determination for flexible bandwidth carriers
US10764806B2 (en) Method and apparatus for assisting terminal in measuring
US9648525B2 (en) System and methods for improving intra-frequency cell reselection on a wireless communication device in connected mode
US9749942B2 (en) Wi-Fi power saving based on coarse motion classification information
JP5356461B2 (en) Radio relay apparatus and radio relay method
WO2013052868A4 (en) Apparatus and methods for reducing page loss in multiple subscription, multiple radio access technology devices
GB2484011A (en) Configuring channel measurement occasions for neighbour cell searches
KR101601883B1 (en) Method and apparatuses for performing better plmn search during connected mode drx
WO2017051067A1 (en) Method of ue autonomous measurement related actions upon implicit triggers
RU2689112C1 (en) Wireless device and methods performed by them
JP2012004659A (en) Handover method and radio communication apparatus
JP5301616B2 (en) HANDOVER METHOD AND RADIO COMMUNICATION DEVICE
JP2007027877A (en) Communication terminal and handover method
JP2013090069A (en) Radio communication terminal device and radio communication terminal control method
JP5461300B2 (en) Radio relay apparatus and communication interface selection method thereof
US20150358833A1 (en) Communication control apparatus, radio base station apparatus, radio terminal apparatus, and communication control method
JP2007043573A (en) Mobile communication system and mobile communication terminal
JP2012010260A (en) Radio relay device and radio relay method
JP4296240B2 (en) Software defined radio communication apparatus and radio communication control method
JP6466455B2 (en) Device and method for reducing awake state duration in an access terminal operating in slot idle mode
JP5399328B2 (en) Wireless relay apparatus, power saving control method, and wireless relay method
JP5356460B2 (en) Radio relay apparatus and radio relay method
JP2009033444A (en) Mobile radio terminal
JP5468579B2 (en) Radio relay apparatus and radio relay method
CN103415037B (en) Multi-mode single-standby mobile terminal and communication means

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20121109

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130611

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130612

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130809

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130827

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130828

R150 Certificate of patent or registration of utility model

Ref document number: 5356461

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees