JP5618072B2 - Wireless communication system, wireless communication apparatus, and wireless communication method - Google Patents

Wireless communication system, wireless communication apparatus, and wireless communication method Download PDF

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JP5618072B2
JP5618072B2 JP2010225034A JP2010225034A JP5618072B2 JP 5618072 B2 JP5618072 B2 JP 5618072B2 JP 2010225034 A JP2010225034 A JP 2010225034A JP 2010225034 A JP2010225034 A JP 2010225034A JP 5618072 B2 JP5618072 B2 JP 5618072B2
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base station
mobile station
station
reception level
femto base
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基樹 森田
基樹 森田
松永　泰彦
泰彦 松永
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NEC Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control

Description

本願は、無線通信システム、無線通信装置、無線通信方法に関する。   The present application relates to a wireless communication system, a wireless communication apparatus, and a wireless communication method.

近年、携帯電話の普及に伴い、主に屋外に設置されるマクロ基地局と屋内に設置されるフェムト基地局とから構成される無線通信システムが検討されている。マクロ基地局は、半径数km程度の広範囲のマクロセルを形成する基地局で、主に屋外にいる移動局と接続する。一方、フェムト基地局は、半径数１０ｍ程度の狭小のフェムトセルを形成する基地局で、主に屋内にいる移動局と接続する。このフェムト基地局は、マクロ基地局からの電波が届きにくいエリア、主に屋内のカバレッジ対策として検討されている。
フェムト基地局のカバレッジを制御する技術として、例えば特許文献１がある。特許文献１に記載されているフェムト基地局は、マクロ基地局に対する受信品質を測定し、所定の電力オフセットを加算することで、レファレンス信号の送信電力及び送信電力の最大値の初期値を決定する。そして、フェムト基地局との通信が許可されているフェムト移動局は、フェムト基地局に対する受信品質を測定し、定期的または所定の条件が満たされた場合、フェムト基地局に測定結果を報告する。フェムト基地局は、報告された測定結果に基づき、所定の目標値に近づくように送信電力を調整する。 In recent years, with the spread of mobile phones, wireless communication systems mainly composed of macro base stations installed outdoors and femto base stations installed indoors have been studied. A macro base station is a base station that forms a wide range of macro cells with a radius of several kilometers, and is mainly connected to mobile stations located outdoors. On the other hand, the femto base station is a base station that forms a narrow femtocell having a radius of about several tens of meters, and is mainly connected to a mobile station indoors. This femto base station is being studied as an area coverage measure that is difficult for radio waves from a macro base station to reach, mainly indoors.
As a technique for controlling the coverage of a femto base station, for example, there is Patent Document 1. The femto base station described in Patent Literature 1 measures the reception quality for the macro base station, and adds a predetermined power offset to determine the initial value of the reference signal transmission power and the maximum value of the transmission power. . Then, the femto mobile station permitted to communicate with the femto base station measures the reception quality for the femto base station, and reports the measurement result to the femto base station periodically or when a predetermined condition is satisfied. The femto base station adjusts the transmission power so as to approach a predetermined target value based on the reported measurement result.

国際公開ＷＯ２００９／０４７９７２号International Publication WO2009 / 047972

上記技術では、受信品質の目標値を用いて、フェムト基地局の通信エリア（カバレッジ）を調整している。しかしながら、フェムト基地局のカバレッジが運用中に極端に縮小される可能性がある。例えば、受信品質の目標値が過小に設定されているとき、受信品質の測定結果の報告が十分に集まらないときが挙げられる。カバレッジが縮小された結果、移動局がフェムト基地局と充分な通信品質で通信することが望まれる場所に移動したにも関わらず、フェムト基地局のカバレッジ範囲外に位置することが起こり、マクロ基地局と接続し続けることになってしまう。   In the above technique, the communication area (coverage) of the femto base station is adjusted using the target value of the reception quality. However, the femto base station coverage may be drastically reduced during operation. For example, when the target value of the reception quality is set to be too low, reports of reception quality measurement results are not collected sufficiently. As a result of the reduced coverage, the mobile station may move to a location where it is desired to communicate with the femto base station with sufficient communication quality, but may be located outside the coverage range of the femto base station. It will continue to connect with the station.

そこで、本発明が解決しようとする課題は、上記問題点を解決することであり、移動局の測定結果に応じて、移動局が適切な基地局と通信できるように、基地局の通信エリアを拡大する技術を提供することにある。   Therefore, the problem to be solved by the present invention is to solve the above-mentioned problem, and according to the measurement result of the mobile station, the communication area of the base station is set so that the mobile station can communicate with an appropriate base station. It is to provide expanding technology.

上記課題を解決するための本発明の無線通信システムは、第１の基地局と、第２の基地局と、前記第１及び第２の基地局のいずれにも接続できる移動局とから構成される無線通信システムであって、前記移動局は、前記第１の基地局から送信される信号の受信レベルを測定する手段と、自移動局の位置情報を測位する手段と、前記受信レベルと前記位置情報とを前記第２の基地局に送信する手段とを有し、前記第２の基地局は、前記移動局が前記第１の基地局から所定の距離内にいるかを判断し、所定の距離内にいる場合、前記受信レベルに応じて前記第１の基地局の無線パラメータの変更要求を作成し、前記第１の基地局に送信する制御手段を有し、前記第１の基地局は、前記第２の基地局から受信した前記無線パラメータの変更要求に従って無線パラメータを変更する制御手段を有することを特徴とする。
上記課題を解決するための本発明の基地局は、移動局が測位した前記移動局の位置情報に基づいて前記移動局が自基地局以外の基地局である第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて前記第１の基地局の無線パラメータの変更要求を作成し、前記第１の基地局に送信する制御手段を有することを特徴とする。 A wireless communication system according to the present invention for solving the above-described problems is composed of a first base station, a second base station, and a mobile station that can be connected to both the first and second base stations. that a wireless communication system, the mobile station, said means for measuring the reception level of the signal to be transmitted, means for positioning the location information of the mobile station, and the reception level from the first base station and means for transmitting the location information to the second base station, the second base station determines whether the mobile station is present within said first predetermined distance from the base station, a predetermined When within the distance, the radio base station has a control unit that creates a radio parameter change request for the first base station according to the reception level and transmits the request to the first base station. , According to the radio parameter change request received from the second base station. Characterized in that it has a control means for changing the radio parameter Te.
In order to solve the above problems, a base station of the present invention provides a predetermined distance from a first base station in which the mobile station is a base station other than the base station based on position information of the mobile station measured by the mobile station. When the mobile station is within the predetermined distance, the mobile station wirelessly transmits the radio signal of the first base station according to a reception level obtained by measuring a signal transmitted from the first base station. Control means for creating a parameter change request and transmitting the request to the first base station.

上記課題を解決するための本発明の制御装置は、移動局が測位した前記移動局の位置情報に基づいて前記移動局が接続中の基地局以外の基地局である第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて、前記第１の基地局の通信エリアを拡大させる制御手段を有することを特徴とする。   The control device of the present invention for solving the above-described problem is based on the position information of the mobile station measured by the mobile station, from the first base station that is a base station other than the base station to which the mobile station is connected. If the mobile station is within the predetermined distance, the mobile station determines the first base according to the reception level obtained by measuring the signal transmitted from the first base station. Control means for expanding the communication area of the station is provided.

上記課題を解決するための本発明は、基地局における無線パラメータ変更要求生成方法であって、前記移動局が測位した前記移動局の位置情報に基づいて前記移動局が自局以外の第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて、前記第１の基地局の無線パラメータの変更要求を作成する作成ステップと、前記作成した無線パラメータの変更要求を前記第１の基地局に送信する送信ステップとを有することを特徴とする。 The present invention for solving the above-described problem is a radio parameter change request generation method in a base station , wherein the mobile station is a first one other than the mobile station based on the location information of the mobile station that is positioned by the mobile station. It is determined whether the mobile station is within a predetermined distance from the base station.When the mobile station is within the predetermined distance, the mobile station measures the signal transmitted from the first base station, A creation step of creating a radio parameter change request of the first base station, and a transmission step of transmitting the created radio parameter change request to the first base station .

本発明によると、移動局の測定結果に応じて基地局の通信エリアを拡大するので、移動局が適切な基地局と通信することが可能となる。   According to the present invention, since the communication area of the base station is expanded according to the measurement result of the mobile station, the mobile station can communicate with an appropriate base station.

図１は、本発明の無線通信システムの概要図である。FIG. 1 is a schematic diagram of a wireless communication system according to the present invention. 図２は、本発明の移動局の構成例を示すブロック図である。FIG. 2 is a block diagram showing a configuration example of the mobile station of the present invention. 図３は、本発明のマクロ基地局の構成例を示すブロック図である。FIG. 3 is a block diagram showing a configuration example of the macro base station of the present invention. 図４は、本発明のフェムト基地局の構成例を示すブロック図である。FIG. 4 is a block diagram illustrating a configuration example of a femto base station according to the present invention. 図５は、本発明の第１の実施の形態の動作のフロー図である。FIG. 5 is a flowchart of the operation of the first embodiment of the present invention. 図６は、本発明の第２の実施の形態の動作のフロー図である。FIG. 6 is a flowchart of the operation of the second exemplary embodiment of the present invention. 図７は、本発明の第３の実施の形態のフェムト基地局の構成例を示すブロック図である。FIG. 7 is a block diagram illustrating a configuration example of a femto base station according to the third embodiment of this invention. 図８は、本発明の第３の実施の形態の動作のフロー図である。FIG. 8 is a flowchart of the operation of the third embodiment of the present invention. 図９は、本発明の第４の実施の形態の動作のフロー図である。FIG. 9 is a flowchart of the operation of the fourth exemplary embodiment of the present invention. 図１０は、本発明の無線通信システムの概要図である。FIG. 10 is a schematic diagram of the wireless communication system of the present invention.

本願発明の通信システムは、フェムト基地局と、マクロ基地局と、フェムト基地局及びマクロ基地局のいずれにも接続できる移動局とから構成される。   The communication system of the present invention includes a femto base station, a macro base station, and a mobile station that can be connected to both the femto base station and the macro base station.

移動局は、マクロ基地局又はフェムト基地局管理サーバからの指示、及び自局の位置の少なくとも一方に応じて、フェムト基地局からのレファレンス信号の受信レベルを測定する。そして、移動局は、その測定結果をマクロ基地局に送信する。   The mobile station measures the reception level of the reference signal from the femto base station in accordance with at least one of the instruction from the macro base station or the femto base station management server and the position of the mobile station. Then, the mobile station transmits the measurement result to the macro base station.

マクロ基地局、またはマクロ基地局とネットワークを介して接続されているフェムト基地局管理サーバが、測定結果に応じてフェムト基地局の通信エリア（カバレッジ）を拡大させる制御を行う。   The macro base station or the femto base station management server connected to the macro base station via the network performs control to expand the communication area (coverage) of the femto base station according to the measurement result.

本発明の詳細を説明するために、以下において、図面を参照して具体的に述べる。   In order to explain the details of the present invention, it will be specifically described below with reference to the drawings.

（第1の実施の形態）
まず、第１の実施の形態について説明する。第１の実施の形態では、フェムト基地局からの受信レベルを測定する構成を説明する。 (First embodiment)
First, the first embodiment will be described. In the first embodiment, a configuration for measuring a reception level from a femto base station will be described.

図１は、本発明の通信システムを示す概要図である。本発明の通信システムは、移動局（User Equipment）１０、マクロ基地局２０、及びフェムト基地局３０を有する。尚、以下の説明における移動局１０は、フェムト基地局３０との通信を許可されている移動局として説明する。   FIG. 1 is a schematic diagram showing a communication system of the present invention. The communication system of the present invention includes a mobile station (User Equipment) 10, a macro base station 20, and a femto base station 30. Note that the mobile station 10 in the following description will be described as a mobile station that is permitted to communicate with the femto base station 30.

図２は、移動局１０のブロック図である。   FIG. 2 is a block diagram of the mobile station 10.

移動局１０は、無線通信制御部１１０、下り制御信号再生部１２０、制御部１３０、及び上り制御信号生成部１４０を有する。   The mobile station 10 includes a radio communication control unit 110, a downlink control signal reproduction unit 120, a control unit 130, and an uplink control signal generation unit 140.

無線通信制御部１１０は、マクロ基地局２０又はフェムト基地局３０との無線通信を制御する。   The wireless communication control unit 110 controls wireless communication with the macro base station 20 or the femto base station 30.

下り制御信号再生部１２０は、無線通信制御部１１０がマクロ基地局２０又はフェムト基地局３０から受信したレファレンス信号や各種制御信号から、必要な制御情報を取り出す。マクロ基地局から移動局にＤＣＣＨ（Ｄｅｄｉｃａｔｅｄ Ｃｏｎｔｒｏｌ ＣＨａｎｎｅｌ）を用いて測定要求信号が送信されると、この測定要求信号を下り制御信号再生部１２０が取り出す。   The downlink control signal reproduction unit 120 extracts necessary control information from the reference signals and various control signals received by the wireless communication control unit 110 from the macro base station 20 or the femto base station 30. When a measurement request signal is transmitted from the macro base station to the mobile station using DCCH (Dedicated Control Channel), the downlink control signal reproduction unit 120 extracts the measurement request signal.

制御部１３０は、測定部１３１を有する。測定部１３１は、測定要求信号を下り制御信号再生部１２０から受け取ると、フェムト基地局３０が送信するレファレンス信号の受信レベルを測定する。測定部１３１が測定する受信レベルは、受信信号の強さ（ＲＳＲＰ：Ｒｅｆｅｒｅｎｃｅ Ｓｉｇｎａｌ Ｒｅｃｅｉｖｅｄ Ｐｏｗｅｒ）及び受信信号の品質（ＲＳＲＱ：Ｒｅｆｅｒｅｎｃｅ Ｓｉｇｎａｌ Ｒｅｃｅｉｖｅｄ Ｑｕａｌｉｔｙ）のうち、少なくとも１つである。また、測定をやめる条件は、マクロ基地局から測定中止信号の指示をＤＣＣＨで受けたとき、または一定の回数、測定結果を報告したときとする。   The control unit 130 includes a measurement unit 131. When the measurement unit 131 receives the measurement request signal from the downlink control signal reproduction unit 120, the measurement unit 131 measures the reception level of the reference signal transmitted by the femto base station 30. The reception level measured by the measurement unit 131 is at least one of received signal strength (RSRP: Reference Signal Received Power) and received signal quality (RSRQ: Reference Signal Received Quality). The condition for stopping the measurement is when a measurement stop signal instruction is received from the macro base station via the DCCH, or when a measurement result is reported a certain number of times.

上り制御信号生成部１４０は、自局が通信できる基地局の識別情報と、各基地局（またはセル）に対応する受信レベルの測定結果とを、DCCH中のMeasurement Reportを用いてマクロ基地局２０に送信する。基地局の識別情報には、自身が登録され接続が可能なフェムト基地局の識別情報も含まれる。以下、これを登録フェムト基地局情報と呼ぶ。尚、測定結果は、測定部１３１が測定している場合に送信される。   The uplink control signal generation unit 140 uses the measurement report in the DCCH to obtain the identification information of the base station with which the local station can communicate and the measurement result of the reception level corresponding to each base station (or cell). Send to. The identification information of the base station also includes the identification information of the femto base station that is registered and can be connected. Hereinafter, this is referred to as registered femto base station information. The measurement result is transmitted when the measurement unit 131 is measuring.

図３は、マクロ基地局２０のブロック図である。マクロ基地局２０は、無線通信制御部２１０、上り制御信号再生部２２０、制御部２３０、下り制御信号生成部２４０、及び有線通信制御部２５０を有する。   FIG. 3 is a block diagram of the macro base station 20. The macro base station 20 includes a wireless communication control unit 210, an uplink control signal reproduction unit 220, a control unit 230, a downlink control signal generation unit 240, and a wired communication control unit 250.

無線通信制御部２１０は、移動局１０との無線通信を制御する。   The wireless communication control unit 210 controls wireless communication with the mobile station 10.

上り制御信号再生部２２０は、移動局１０から送信されたＤＣＣＨに、登録フェムト基地局情報が記されている場合、登録フェムト基地局情報を取り出して制御部２３０に渡す。また、移動局１０から送信されたＤＣＣＨのＭｅａｓｕｒｅｍｅｎｔ Ｒｅｐｏｒｔから測定値を取り出して制御部２３０に渡す。   When the registered femto base station information is described in the DCCH transmitted from the mobile station 10, the uplink control signal reproduction unit 220 extracts the registered femto base station information and passes it to the control unit 230. In addition, the measurement value is extracted from the DCCH Measurement Report transmitted from the mobile station 10 and passed to the control unit 230.

制御部２３０は、測定指示部２３１及び無線パラメータ設定部２３２を有する。   The control unit 230 includes a measurement instruction unit 231 and a wireless parameter setting unit 232.

測定指示部２３１は、上り制御信号再生部２２０から登録フェムト基地局情報を受け取ると、自基地局にて通信エリアの制御を行うフェムト基地局であるかを確認する。自基地局にて制御を行うフェムト基地局であると確認すると、その登録フェムト基地局情報を送信した移動局に対して、そのフェムト基地局からのレファレンス信号の受信レベルを測定するように指示する。また、所定の条件を満たした場合に、移動局に対して測定を中止するように指示する。   When the measurement instructing unit 231 receives the registered femto base station information from the uplink control signal reproducing unit 220, the measurement instructing unit 231 confirms whether the own base station is a femto base station that controls the communication area. If it confirms that it is a femto base station controlled by its own base station, it instructs the mobile station that transmitted the registered femto base station information to measure the reception level of the reference signal from the femto base station. . In addition, when a predetermined condition is satisfied, the mobile station is instructed to stop the measurement.

無線パラメータ設定部２３２は、上り制御信号再生部２２０が取り出した測定値に基づき、フェムト基地局の通信エリアを拡大させた方が良いかを判定する。拡大させた方が良いと判定された場合は、測定値に応じたパラメータ変更量を算出して、フェムト基地局３０の無線パラメータ変更要求を作成する。
フェムト基地局の通信エリアを拡大させた方が良いかの判定は、測定値と所定の閾値との比較で判定する。すなわち、測定値が第１の閾値以下、かつ第２の閾値以上のとき（第１の閾値＞第２の閾値）、フェムト基地局の通信エリアを拡大させたほうがよいと判定する。閾値の具体例としては、受信信号の強さの場合は第１の閾値を−１００ｄＢｍ、第2の閾値を−１４０ｄＢ、受信信号の品質の場合は、それぞれ−１０ｄＢ、−２０ｄＢが挙げられる。
また、測定された受信レベルに基づいて変更させる無線パラメータの例として、送信電力やアンテナのチルト角がある。送信電力を増大（例えば１ｄＢ）させることで、またはチルト角を水平方向に対して低減させる（例えば１０度）ことで、通信エリアを拡大できる。 Radio parameter setting section 232 determines whether it is better to expand the communication area of the femto base station based on the measurement value taken out by uplink control signal reproduction section 220. If it is determined that the enlargement is better, a parameter change amount corresponding to the measured value is calculated, and a radio parameter change request for the femto base station 30 is created.
Whether or not it is better to expand the communication area of the femto base station is determined by comparing the measured value with a predetermined threshold value. That is, when the measured value is equal to or lower than the first threshold and equal to or higher than the second threshold (first threshold> second threshold), it is determined that the communication area of the femto base station should be expanded. Specific examples of the threshold include a first threshold of −100 dBm, a second threshold of −140 dB for received signal strength, and a −10 dB and −20 dB for received signal quality, respectively.
Further, examples of radio parameters to be changed based on the measured reception level include transmission power and antenna tilt angle. The communication area can be expanded by increasing the transmission power (for example, 1 dB) or reducing the tilt angle with respect to the horizontal direction (for example, 10 degrees).

下り制御信号生成部２４０は、測定指示部２３１から測定指示を受け取ると、ＤＣＣＨにおいて測定要求信号（Ｍｅａｓｕｒｅｍｅｎｔ Ｃｏｎｔｒｏｌ）を生成する。同様に、測定中止の指示を受け取ると、測定中止信号を生成する。   When receiving the measurement instruction from the measurement instruction unit 231, the downlink control signal generation unit 240 generates a measurement request signal (Measurement Control) on the DCCH. Similarly, when a measurement stop instruction is received, a measurement stop signal is generated.

有線通信制御部２５０は、無線パラメータ設定部２３２が作成した無線パラメータ変更要求をフェムト基地局３０に送信する。   The wired communication control unit 250 transmits the wireless parameter change request created by the wireless parameter setting unit 232 to the femto base station 30.

図４は、フェムト基地局３０のブロック図である。フェムト基地局３０は、無線送受信部３１０、上り制御信号再生部３２０、制御部３３０、下り制御信号生成部３４０、及び有線通信制御部３５０を有する。   FIG. 4 is a block diagram of the femto base station 30. The femto base station 30 includes a wireless transmission / reception unit 310, an uplink control signal reproduction unit 320, a control unit 330, a downlink control signal generation unit 340, and a wired communication control unit 350.

制御部３３０は、無線パラメータ変更部３３１を有する。無線パラメータ変更部３３１は、マクロ基地局からの無線パラメータ変更要求に従い、送信電力を調整して通信エリアを拡大する。送信電力の調整方法としては、レファレンス信号の送信電力を基準に、制御チャネル、データチャネルの送信電力を比例させて調整する。また、チルト角制御機能が設けられているフェムト基地局である場合は、アンテナのチルト角を調整して通信エリアを拡大する。   The control unit 330 includes a wireless parameter changing unit 331. The radio parameter change unit 331 expands the communication area by adjusting the transmission power in accordance with a radio parameter change request from the macro base station. As a method for adjusting the transmission power, the transmission power of the control channel and the data channel is adjusted in proportion to the transmission power of the reference signal. In the case of a femto base station provided with a tilt angle control function, the communication area is expanded by adjusting the tilt angle of the antenna.

続いて、本実施の形態の動作について説明する。図５は、第１の実施の形態の動作を説明するためのフロー図である。尚、以下の説明では、マクロ基地局２０は、移動局１０が通信許可されているフェムト基地局３０を自基地局にて制御するフェムト基地局であると既に判定されているものとして説明する。   Subsequently, the operation of the present embodiment will be described. FIG. 5 is a flowchart for explaining the operation of the first embodiment. In the following description, it is assumed that the macro base station 20 has already been determined to be a femto base station that controls the femto base station 30 to which the mobile station 10 is permitted to communicate.

測定指示部２３１は測定指示を出すと、下り制御信号生成部２４０は、無線通信制御部２１０を介して移動局１０に測定要求信号を送付する（ステップＳ１）。   When the measurement instruction unit 231 issues a measurement instruction, the downlink control signal generation unit 240 sends a measurement request signal to the mobile station 10 via the wireless communication control unit 210 (step S1).

測定部１３１は、測定要求信号を受信すると、フェムト基地局３０からのレファレンス信号の受信レベルを測定する（ステップＳ２）。   When receiving the measurement request signal, the measurement unit 131 measures the reception level of the reference signal from the femto base station 30 (step S2).

上り制御信号生成部１４０は、測定部１３１が測定した受信レベルをマクロ基地局２０に通知する（ステップＳ３）。   The uplink control signal generation unit 140 notifies the macro base station 20 of the reception level measured by the measurement unit 131 (step S3).

無線パラメータ設定部２３２は、移動局１０から受信レベルを受け取ると、通信エリアを拡大するかを判定する（ステップＳ４）。通信エリアを拡大しないと判定した場合は（ステップ４のＮＯ）、フェムト基地局の制御処理を終了する。   When receiving the reception level from the mobile station 10, the wireless parameter setting unit 232 determines whether to expand the communication area (step S4). If it is determined that the communication area is not expanded (NO in step 4), the femto base station control process is terminated.

一方、通信エリアを拡大すると判定した場合は（ステップ４のＹＥＳ）、通信エリアを拡大させるために無線パラメータ変更要求を生成する（ステップＳ５）。   On the other hand, if it is determined to expand the communication area (YES in step 4), a wireless parameter change request is generated to expand the communication area (step S5).

下り制御信号生成部２４０は、無線パラメータ設定部２３２が作成した無線パラメータ変更要求をフェムト基地局３０に通知する（ステップＳ６）。   The downlink control signal generation unit 240 notifies the femto base station 30 of the radio parameter change request created by the radio parameter setting unit 232 (step S6).

無線パラメータ変更部３３１は、マクロ基地局２０から送信された無線パラメータ変更要求に従って、無線パラメータを変更する（ステップＳ７）。   The radio parameter changing unit 331 changes the radio parameter in accordance with the radio parameter change request transmitted from the macro base station 20 (step S7).

本実施の形態によると、フェムト基地局からの受信レベルを移動局で実測しているので、フェムト基地局の通信エリアが必要以上に縮小されているかがわかる。そのため、フェムト基地局の通信エリアを適宜拡大させることで、移動局はフェムト基地局と通信することが可能となり、十分な通信品質を得ることができる。   According to the present embodiment, since the reception level from the femto base station is actually measured by the mobile station, it can be seen whether the communication area of the femto base station is reduced more than necessary. Therefore, by appropriately expanding the communication area of the femto base station, the mobile station can communicate with the femto base station, and sufficient communication quality can be obtained.

（第２の実施の形態）
次に、本発明の第２の実施の形態を説明する。本実施の形態では、受信レベルに加えて移動局の位置情報を用いて判定する構成について説明する。なお、上記第１の実施の形態と同様の構成については、同一の番号を付し、詳細な説明は要略する。また、以下の説明では、移動局の位置情報によって判定する構成について説明するが、通信状況と位置情報とに基づいて判定する構成であってもよい。 (Second Embodiment)
Next, a second embodiment of the present invention will be described. In the present embodiment, a configuration will be described in which determination is performed using position information of a mobile station in addition to a reception level. In addition, about the structure similar to the said 1st Embodiment, the same number is attached | subjected and detailed description is abbreviate | omitted. Further, in the following description, a configuration that is determined based on the location information of the mobile station will be described, but a configuration that is determined based on the communication status and location information may be used.

測定指示部２３１は、上り制御信号再生部２２０から登録フェムト基地局情報を受け取ると、自基地局にて通信エリアの制御を行うフェムト基地局であるかを確認する。自基地局にて制御を行うフェムト基地局であると確認すると、その登録フェムト基地局情報を送信した移動局に対して、測定要求信号を送信する。   When the measurement instructing unit 231 receives the registered femto base station information from the uplink control signal reproducing unit 220, the measurement instructing unit 231 confirms whether the own base station is a femto base station that controls the communication area. If it is confirmed that the base station is a femto base station that controls the base station, a measurement request signal is transmitted to the mobile station that transmitted the registered femto base station information.

測定部１３１は、測定要求信号を受信すると、ＧＰＳ（Global Positioning System）により、移動局の地球上での位置を測位する。更に、フェムト基地局からのレファレンス信号の受信レベルを測定する。
上り制御信号生成部１４０は、測位結果と測定結果とをマクロ基地局２０に送信する。 When receiving the measurement request signal, the measurement unit 131 measures the position of the mobile station on the earth by GPS (Global Positioning System). Further, the reception level of the reference signal from the femto base station is measured.
The uplink control signal generation unit 140 transmits the positioning result and the measurement result to the macro base station 20.

無線パラメータ設定部２３２は、フェムト基地局の地球上での位置を示す位置情報を保持している。移動局１０から測位結果と測定結果とを受信すると、受信した測位結果とフェムト基地局の位置情報とを比較して、移動局１０がフェムト基地局３０と接続した方がよいかを判定する。例えば、受信した測位結果とフェムト基地局の位置情報から、フェムト基地局と移動局間の距離を算出し、その距離が所定の値（例えば１０ｍ）以下になっている場合、移動局はフェムト基地局に接続した方がよいと判定する。接続した方が良いと判定した場合、測定結果に基づいて、拡大させるパラメータを決定して、フェムト基地局３０の無線パラメータ変更要求を作成する   The radio parameter setting unit 232 holds position information indicating the position of the femto base station on the earth. When the positioning result and the measurement result are received from the mobile station 10, the received positioning result is compared with the position information of the femto base station to determine whether the mobile station 10 should be connected to the femto base station 30. For example, the distance between the femto base station and the mobile station is calculated from the received positioning result and the position information of the femto base station, and when the distance is a predetermined value (for example, 10 m) or less, the mobile station It is determined that it is better to connect to the station. If it is determined that the connection is better, the parameter to be expanded is determined based on the measurement result, and a radio parameter change request for the femto base station 30 is created.

続いて、本実施の形態の動作について説明する。図６は、第２の実施の形態の動作を説明するためのフロー図である。尚、以下の説明では、マクロ基地局２０は、移動局１０が通信許可されているフェムト基地局３０を自基地局にて制御するフェムト基地局であると既に判定されているものとして説明する。   Subsequently, the operation of the present embodiment will be described. FIG. 6 is a flowchart for explaining the operation of the second embodiment. In the following description, it is assumed that the macro base station 20 has already been determined to be a femto base station that controls the femto base station 30 to which the mobile station 10 is permitted to communicate.

測定指示部２３１は測定指示を出すと、下り制御信号生成部２４０は、無線通信制御部２１０を介して移動局１０に測定要求信号を送付する（ステップＳ６０１）。   When the measurement instruction unit 231 issues a measurement instruction, the downlink control signal generation unit 240 sends a measurement request signal to the mobile station 10 via the wireless communication control unit 210 (step S601).

測定部１３１は、測定要求信号を受信すると、移動局の現在の位置を示す位置情報をＧＰＳを用いて測位する（ステップＳ６０２）。   Upon receiving the measurement request signal, the measurement unit 131 measures the position information indicating the current position of the mobile station using GPS (step S602).

更に、測定部１３１は、フェムト基地局３０からのレファレンス信号の受信レベルを測定する（ステップＳ６０３）。   Further, the measurement unit 131 measures the reception level of the reference signal from the femto base station 30 (step S603).

上り制御信号生成部１４０は、測定部１３１が測位した位置情報と受信レベルとをマクロ基地局２０に通知する（ステップＳ６０４）。   The uplink control signal generation unit 140 notifies the macro base station 20 of the position information and the reception level measured by the measurement unit 131 (step S604).

無線パラメータ設定部２３２は、移動局１０から位置情報を受け取ると、通信エリアを拡大するかを判定する（ステップＳ６０５）。通信エリアを拡大しないと判定した場合は（ステップ６０５のＮＯ）、フェムト基地局の制御処理を終了する。   When receiving the position information from the mobile station 10, the wireless parameter setting unit 232 determines whether to expand the communication area (step S605). If it is determined not to expand the communication area (NO in step 605), the control process for the femto base station is terminated.

一方、通信エリアを拡大すると判定した場合は（ステップ６０５のＹＥＳ）、通信エリアを拡大させるために無線パラメータ変更要求を生成する（ステップＳ６０６）。   On the other hand, when it is determined to expand the communication area (YES in step 605), a wireless parameter change request is generated to expand the communication area (step S606).

下り制御信号生成部２４０は、無線パラメータ設定部２３２が生成した無線パラメータ変更要求をフェムト基地局３０に通知する（ステップＳ６０７）。   The downlink control signal generation unit 240 notifies the femto base station 30 of the radio parameter change request generated by the radio parameter setting unit 232 (step S607).

無線パラメータ変更部３３１は、マクロ基地局２０から送信された無線パラメータ変更要求に従って、無線パラメータを変更する（ステップＳ６０８）。   The radio parameter changing unit 331 changes the radio parameter according to the radio parameter change request transmitted from the macro base station 20 (step S608).

上記実施の形態では、マクロ基地局からの測定指示を受けて、受信レベルを測定している構成について記載したがこの構成に限らなくてもよい。例えば、測定部１３１が定期的に位置を測位し、測位結果に基づいて受信レベルを測定するかを判断してもよい。また、上記のようにマクロ基地局２０から測定要求を受信した後に定期的に測位し、測位結果に基づいて受信レベルを測定するかを判断してもよい。   In the above-described embodiment, the configuration in which the reception level is measured in response to the measurement instruction from the macro base station has been described. However, the configuration is not limited to this configuration. For example, the measurement unit 131 may periodically determine the position and determine whether to measure the reception level based on the positioning result. Further, as described above, after receiving a measurement request from the macro base station 20, it may be determined periodically to determine whether to measure the reception level based on the positioning result.

本実施の形態では、移動局の位置情報に基づいてフェムト基地局の通信エリアを拡大するかを判定している。このため、移動局はフェムト基地局と通信することが可能となり、十分な通信品質を得ることができる。   In this Embodiment, it is determined whether the communication area of a femto base station is expanded based on the positional information on a mobile station. For this reason, the mobile station can communicate with the femto base station, and sufficient communication quality can be obtained.

なお、本実施の形態では、位置情報を取得する手段としてＧＰＳを用いて記載を行ったが、これに限定されるものではなく、マクロ基地局または移動局と通信を行う電波を用いるなど他の手段によるものでもよい。   In the present embodiment, description is made using GPS as a means for acquiring position information. However, the present invention is not limited to this, and other means such as using radio waves communicating with a macro base station or a mobile station are used. It may be by means.

（第３の実施の形態）
次に、本発明の第３の実施の形態について説明する。上記実施の形態では、フェムト基地局の通信エリアを拡大する構成について説明した。本実施の形態では、拡大した通信エリアを縮小、または現在の大きさに維持する構成について説明する。尚、上記実施の形態と同様の構成については、同一の番号を付し、詳細な説明は省略する。 (Third embodiment)
Next, a third embodiment of the present invention will be described. In the above embodiment, the configuration for expanding the communication area of the femto base station has been described. In the present embodiment, a configuration for reducing the expanded communication area or maintaining the current size will be described. In addition, about the structure similar to the said embodiment, the same number is attached | subjected and detailed description is abbreviate | omitted.

図７は、本実施の形態のフェムト基地局３０の構成を示すブロック図である。フェムト基地局３０は、測定指示部３３２と無線パラメータ設定部３３３とを更に有する。   FIG. 7 is a block diagram illustrating a configuration of the femto base station 30 according to the present embodiment. The femto base station 30 further includes a measurement instruction unit 332 and a radio parameter setting unit 333.

測定指示部３３２は、自局に接続している移動局１０に対して測定要求信号をＤＣＣＨにて送信する。尚、送信要求信号は、定期的に送信しても、任意の条件を満たした場合に送信しても良い。   The measurement instruction unit 332 transmits a measurement request signal to the mobile station 10 connected to the own station via DCCH. The transmission request signal may be transmitted periodically or when an arbitrary condition is satisfied.

無線パラメータ設定部３３３は、フェムト基地局の通信エリアを拡大させた後、通信エリアを縮小させた方が良いかを、移動局１０から送信される受信レベルに基づいて判定する。縮小させた方が良いと判定された場合は、測定値に応じたパラメータ変更量を算出して、無線パラメータ変更要求を作成して無線パラメータ変更部３３１に通知する。フェムト基地局の通信エリアを縮小させるかの判定は、測定値が閾値以上であるかによって判定する。すなわち、測定値が第３の閾値以上のとき、フェムト基地局の通信エリアを縮小させたほうがよいと判定する。閾値の具体例としては、受信信号の強さの場合は−５０ｄＢｍ≧閾値とし、受信信号の品質の場合は−３ｄＢ≧閾値とする。   The radio parameter setting unit 333 determines whether it is better to reduce the communication area after expanding the communication area of the femto base station based on the reception level transmitted from the mobile station 10. If it is determined that the reduction is better, the parameter change amount corresponding to the measured value is calculated, a radio parameter change request is created, and the radio parameter change unit 331 is notified. Whether to reduce the communication area of the femto base station is determined based on whether the measured value is equal to or greater than a threshold value. That is, when the measured value is greater than or equal to the third threshold value, it is determined that the communication area of the femto base station should be reduced. As a specific example of the threshold value, −50 dBm ≧ threshold is set for the strength of the received signal, and −3 dB ≧ threshold is set for the quality of the received signal.

続いて、本実施の形態の動作について説明する。図８は、第３の実施の形態の動作を説明するためのフロー図である。   Subsequently, the operation of the present embodiment will be described. FIG. 8 is a flowchart for explaining the operation of the third embodiment.

測定指示部３３２は、移動局１０に対して、測定要求信号を送信する（ステップＳ８０１）。   The measurement instruction unit 332 transmits a measurement request signal to the mobile station 10 (step S801).

測定部１３１は、測定要求信号を受信すると、フェムト基地局３０からのレファレンス信号の受信レベルを測定する（ステップＳ８０２）。   When receiving the measurement request signal, the measurement unit 131 measures the reception level of the reference signal from the femto base station 30 (step S802).

上り制御信号生成部１４０は、測定部１３１が測定した受信レベルをフェムト基地局３０に通知する（ステップＳ８０３）。   The uplink control signal generation unit 140 notifies the femto base station 30 of the reception level measured by the measurement unit 131 (step S803).

無線パラメータ設定部３３３は、通信エリアを拡大させた後、移動局１０から受信レベルを受け取ると、通信エリアを縮小するかを判定する（ステップＳ８０４）。通信エリアを縮小しないと判定した場合は（ステップＳ８０４のＮＯ）、フェムト基地局の制御処理を終了する。   After receiving the reception level from the mobile station 10 after expanding the communication area, the wireless parameter setting unit 333 determines whether to reduce the communication area (step S804). If it is determined that the communication area is not reduced (NO in step S804), the femto base station control process ends.

通信エリアを縮小すると判定した場合は、通信エリアを縮小させるために測定値に応じたパラメータ変更量を算出して、無線パラメータ変更要求を生成する（ステップＳ８０５）。そして、生成した無線パラメータ変更要求を無線パラメータ変更部３３１に通知する（ステップＳ８０６）。   If it is determined that the communication area is to be reduced, a parameter change amount corresponding to the measured value is calculated to reduce the communication area, and a wireless parameter change request is generated (step S805). Then, the generated wireless parameter change request is notified to the wireless parameter changing unit 331 (step S806).

無線パラメータ変更部３３１は、無線パラメータ設定部３３３が生成した無線パラメータ変更要求に従って、無線パラメータを変更する（ステップＳ８０７）。   The radio parameter changing unit 331 changes the radio parameter in accordance with the radio parameter change request generated by the radio parameter setting unit 333 (step S807).

上記実施の形態では、受信レベルに基づいて、通信エリアを縮小するかを判定する構成を用いて説明したが、別の構成であってもよい。例えば、フェムト基地局は自局の位置情報を保持しており、移動局の測定部１３１が測位した位置情報に基づいて通信エリアを縮小するかを判定する構成であっても良い。この場合、例えば、自局の位置情報と受信した測位結果とから自局と移動局との間の距離を算出し、その距離が所定の値（例えば１５ｍ〜２０ｍ）を超えた場合、縮小すると判定する。   Although the above embodiment has been described using the configuration for determining whether to reduce the communication area based on the reception level, another configuration may be used. For example, the femto base station may hold the position information of the own station and determine whether to reduce the communication area based on the position information measured by the measurement unit 131 of the mobile station. In this case, for example, the distance between the local station and the mobile station is calculated from the position information of the local station and the received positioning result, and if the distance exceeds a predetermined value (for example, 15 m to 20 m), the distance is reduced. judge.

本実施の形態によると、フェムト基地局が通信エリアを拡大したことによって、マクロ基地局の通信品質に影響を与えるのを防ぐことができる。   According to the present embodiment, it is possible to prevent the femto base station from affecting the communication quality of the macro base station by expanding the communication area.

（第４の実施の形態）
次に、本発明の第４の実施の形態について説明する。上記実施の形態では、無線パラメータ設定部２３２がフェムト基地局の通信エリアを拡大させた方が良いかを判定する構成について説明した。本実施の形態では、移動局の測定部１３１が判定する構成について説明する。尚、上記実施の形態と同様の構成については、同一の番号を付し、詳細な説明は省略する。 (Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the above-described embodiment, the configuration in which the radio parameter setting unit 232 determines whether it is better to expand the communication area of the femto base station has been described. In this embodiment, a configuration that is determined by the measurement unit 131 of the mobile station will be described. In addition, about the structure similar to the said embodiment, the same number is attached | subjected and detailed description is abbreviate | omitted.

測定部１３１は、測定値に基づき、フェムト基地局の通信エリアを拡大させた方が良いかを判定する。拡大させた方が良いと判定した場合は、その旨と測定値とをマクロ基地局に通知する。   The measurement unit 131 determines whether it is better to expand the communication area of the femto base station based on the measurement value. When it is determined that the enlargement is better, the macro base station is notified of the fact and the measurement value.

無線パラメータ設定部２３２は、フェムト基地局の通信エリアを拡大させた方が良いとの判定結果を受け取ると、測定値に応じた無線パラメータの変更量を算出し、無線パラメータ変更要求を作成する。   When receiving the determination result that it is better to expand the communication area of the femto base station, the wireless parameter setting unit 232 calculates a wireless parameter change amount according to the measurement value, and creates a wireless parameter change request.

続いて、本実施の形態の動作について説明する。図９は、第４の実施の形態の動作を説明するためのフロー図である。   Subsequently, the operation of the present embodiment will be described. FIG. 9 is a flowchart for explaining the operation of the fourth embodiment.

測定指示部２３１は測定指示を出すと、下り制御信号生成部２４０は、無線通信制御部２１０を介して移動局１０に測定要求信号を送付する（ステップＳ９０１）。   When the measurement instruction unit 231 issues a measurement instruction, the downlink control signal generation unit 240 sends a measurement request signal to the mobile station 10 via the wireless communication control unit 210 (step S901).

測定部１３１は、測定要求信号を受信すると、フェムト基地局３０からのレファレンス信号の受信レベルを測定する（ステップＳ９０２）。   When receiving the measurement request signal, the measurement unit 131 measures the reception level of the reference signal from the femto base station 30 (step S902).

上り制御信号生成部１４０は、測定部１３１が測定した受信レベルに基づき、通信エリアを拡大するかを判定する（ステップＳ９０３）。通信エリアを拡大しないと判定した場合は（ステップＳ９０３のＮＯ）、フェムト基地局の制御処理を終了する。   The uplink control signal generation unit 140 determines whether to expand the communication area based on the reception level measured by the measurement unit 131 (step S903). If it is determined not to expand the communication area (NO in step S903), the femto base station control process ends.

一方、通信エリアを拡大すると判定した場合は（ステップＳ９０３のＹＥＳ）、その旨と受信レベルとをマクロ基地局２０に通知する（ステップＳ９０４）。   On the other hand, if it is determined that the communication area is to be expanded (YES in step S903), the macro base station 20 is notified of this and the reception level (step S904).

無線パラメータ設定部２３２は、移動局１０から受信レベルと判定結果とを受け取ると、パラメータ変更量を算出し、通信エリアを拡大させるために無線パラメータ変更要求を生成する（ステップＳ９０５）。   When receiving the reception level and the determination result from the mobile station 10, the wireless parameter setting unit 232 calculates a parameter change amount and generates a wireless parameter change request to expand the communication area (step S905).

下り制御信号生成部２４０は、無線パラメータ設定部２３２が作成した無線パラメータ変更要求をフェムト基地局３０に通知する（ステップＳ９０６）。   The downlink control signal generation unit 240 notifies the femto base station 30 of the radio parameter change request created by the radio parameter setting unit 232 (step S906).

無線パラメータ変更部３３１は、マクロ基地局２０から送信された無線パラメータ変更要求に従って、無線パラメータを変更する（ステップＳ９０７）。   The radio parameter changing unit 331 changes the radio parameter according to the radio parameter change request transmitted from the macro base station 20 (step S907).

本実施の形態によると、フェムト基地局からの受信レベルを移動局で実測しているので、フェムト基地局の通信エリアが必要以上に縮小されているかがわかる。そのため、フェムト基地局の通信エリアを適宜拡大させることで、移動局はフェムト基地局と通信することが可能となり、十分な通信品質を得ることができる。本実施形態のように、フェムト基地局の通信エリアの拡大の判定は、マクロ基地局や移動局といった任意の装置に分配可能である。   According to the present embodiment, since the reception level from the femto base station is actually measured by the mobile station, it can be seen whether the communication area of the femto base station is reduced more than necessary. Therefore, by appropriately expanding the communication area of the femto base station, the mobile station can communicate with the femto base station, and sufficient communication quality can be obtained. As in this embodiment, the determination of the expansion of the communication area of the femto base station can be distributed to any device such as a macro base station or a mobile station.

尚、第１から第４の実施の形態では、マクロ基地局が無線パラメータ変更要求を作成する構成について説明したが、図１０に示すように、マクロ基地局とネットワークを介して接続されているフェムト基地局管理サーバがマクロ基地局から各種情報を受け取り、制御を行ってもよい。   In the first to fourth embodiments, the configuration in which the macro base station creates the radio parameter change request has been described. However, as shown in FIG. 10, the femto connected to the macro base station via the network is described. The base station management server may receive various information from the macro base station and perform control.

また、上述した本発明の移動局、マクロ基地局及びフェムト基地局は、上記説明からも明らかなように、ハードウェアで構成することも可能であるが、コンピュータプログラムにより実現することも可能である。この場合、プログラムメモリに格納されているプログラムで動作するプロセッサによって、上述した実施の形態と同様の機能、動作を実現させる。尚、上述した実施の形態の一部の機能のみをコンピュータプログラムにより実現することも可能である。   In addition, the mobile station, macro base station, and femto base station of the present invention described above can be configured by hardware as is apparent from the above description, but can also be realized by a computer program. . In this case, functions and operations similar to those of the above-described embodiment are realized by a processor that operates according to a program stored in the program memory. Note that only a part of the functions of the above-described embodiment can be realized by a computer program.

マクロ基地局２０からフェムト基地局３０への無線パラメータ変更要求は、有線通信制御部により、専用のあるいはネットワークを介した有線経由で行なわれるとして説明したが、無線経由のデータ通信で行なわれても良い。その場合、有線通信制御部の代わりに、フェムト基地局はマクロ基地局からの変更要求を無線経由で受信できる構成を有すればよい。また、本実施形態が適用される無線通信方式は特に限定されず、例えばＬＴＥ(Long Term Evolution)、Ｗ−ＣＤＭＡ(Wideband Code Division Multiple Access)、ＷＬＡＮ(Wireless Local Area Network)、ＩＥＥＥ(Institute of Electrical and Electronics Engineers)802.16mに規定された仕様などを含む種々の無線通信方式が適用可能である。   Although the wireless parameter change request from the macro base station 20 to the femto base station 30 has been described as being performed by the wired communication control unit via a dedicated or wired connection via a network, it may be performed via wireless data communication. good. In that case, instead of the wired communication control unit, the femto base station may have a configuration capable of receiving a change request from the macro base station via wireless. The wireless communication system to which the present embodiment is applied is not particularly limited. For example, LTE (Long Term Evolution), W-CDMA (Wideband Code Division Multiple Access), WLAN (Wireless Local Area Network), IEEE (Institute of Electrical). and Electronics Engineers) Various wireless communication methods including the specifications defined in 802.16m are applicable.

以上、実施の形態及び実施例をあげて本発明を説明したが、本発明は必ずしも上記実施の形態及び実施例に限定されるものではなく、その技術的思想の範囲内において様々に変形し実施することが出来る。   Although the present invention has been described with reference to the embodiments and examples, the present invention is not necessarily limited to the above-described embodiments and examples, and various modifications can be made within the scope of the technical idea. I can do it.

１０ 移動局
２０ マクロ基地局
３０ フェムト基地局
１１０ 無線通信制御部
１２０ 下り制御信号再生部
１３０ 制御部
１４０ 上り制御信号生成部
２１０ 無線通信制御部
２２０ 上り制御信号再生部
２３０ 制御部
２４０ 下り制御信号生成部
２５０ 有線通信制御部
３１０ 無線送受信部
３２０ 上り制御信号再生部
３３０ 制御部
３４０ 下り制御信号生成部
３５０ 有線通信制御部 DESCRIPTION OF SYMBOLS 10 Mobile station 20 Macro base station 30 Femto base station 110 Radio | wireless communication control part 120 Downlink control signal reproduction | regeneration part 130 Control part 140 Uplink control signal generation part 210 Wireless communication control part 220 Uplink control signal reproduction | regeneration part 230 Control part 240 Downlink control signal generation | occurrence | production Unit 250 wired communication control unit 310 wireless transmission / reception unit 320 uplink control signal reproduction unit 330 control unit 340 downlink control signal generation unit 350 wired communication control unit

Claims (10)

第１の基地局と、第２の基地局と、前記第１及び第２の基地局のいずれにも接続できる移動局とから構成される無線通信システムであって、
前記移動局は、前記第１の基地局から送信される信号の受信レベルを測定する手段と、自移動局の位置情報を測位する手段と、前記受信レベルと前記位置情報とを前記第２の基地局に送信する手段とを有し、
前記第２の基地局は、前記移動局が前記第１の基地局から所定の距離内にいるかを判断し、所定の距離内にいる場合、前記受信レベルに応じて前記第１の基地局の無線パラメータの変更要求を作成し、前記第１の基地局に送信する制御手段を有し、
前記第１の基地局は、前記第２の基地局から受信した前記無線パラメータの変更要求に従って無線パラメータを変更する制御手段を有する
ことを特徴とする無線通信システム。 A wireless communication system comprising a first base station, a second base station, and a mobile station that can be connected to both the first and second base stations,
The mobile station has means for measuring a reception level of a signal transmitted from the first base station, means for positioning position information of the mobile station, and the reception level and the position information. Means for transmitting to the base station,
The second base station determines whether the mobile station is within a predetermined distance from the first base station. If the mobile station is within the predetermined distance, the second base station determines the first base station according to the reception level. A control means for creating a request for changing a radio parameter and transmitting it to the first base station;
The wireless communication system, wherein the first base station has control means for changing a wireless parameter in accordance with the wireless parameter change request received from the second base station. 基地局であって、
移動局が測位した前記移動局の位置情報に基づいて前記移動局が自基地局以外の基地局である第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて前記第１の基地局の無線パラメータの変更要求を作成し、前記第１の基地局に送信する制御手段を有する
ことを特徴とする基地局。 A base station,
Based on the position information of the mobile station measured by the mobile station, it is determined whether the mobile station is within a predetermined distance from a first base station that is a base station other than its own base station, and is within the predetermined distance The mobile station creates a radio parameter change request for the first base station according to a reception level obtained by measuring a signal transmitted from the first base station, and the first base station A base station comprising control means for transmitting to the base station. 前記制御手段は、前記測定の結果が第１の閾値以下、かつ第２の閾値以上のとき、前記第１の基地局の通信エリアを拡大することを特徴とする請求項２に記載の基地局。   The base station according to claim 2, wherein the control means expands a communication area of the first base station when the measurement result is equal to or less than a first threshold and equal to or greater than a second threshold. . 前記受信レベルは、前記第１の基地局からの信号の受信の強さであることを特徴とする請求項２又は請求項３に記載の基地局。   The base station according to claim 2 or 3, wherein the reception level is a strength of reception of a signal from the first base station. 前記受信レベルは、前記第１の基地局からの信号の通信品質であることを特徴とする請求項２から請求項４のいずれかに記載の基地局。   The base station according to claim 2, wherein the reception level is a communication quality of a signal from the first base station. 前記測定の結果が第３の閾値以上のとき、通信エリアを縮小させる縮小制御手段を有することを特徴とする請求項２から請求項５のいずれかに記載の基地局。   The base station according to claim 2, further comprising a reduction control unit that reduces a communication area when a result of the measurement is equal to or greater than a third threshold value. 前記制御手段は、前記第１の基地局の送信電力を制御することにより、前記第１の基地局の通信エリアを拡大させることを特徴とする請求項２から請求項６のいずれかに記載の基地局。   The said control means expands the communication area of the said 1st base station by controlling the transmission power of the said 1st base station, The Claim 1 characterized by the above-mentioned. base station. 前記制御手段は、前記第１の基地局のチルト角を制御することにより、前記第１の基地局の通信エリアを拡大させることを特徴とする請求項２から請求項６のいずれかに記載の基地局。   The said control means expands the communication area of the said 1st base station by controlling the tilt angle of the said 1st base station, The Claim 1 characterized by the above-mentioned. base station. 制御装置であって、
移動局が測位した前記移動局の位置情報に基づいて前記移動局が接続中の基地局以外の基地局である第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて、前記第１の基地局の通信エリアを拡大させる制御手段を有することを特徴とする制御装置。 A control device,
Based on the position information of the mobile station measured by the mobile station, it is determined whether the mobile station is within a predetermined distance from a first base station that is a base station other than the connected base station, and within the predetermined distance The mobile station has control means for expanding the communication area of the first base station according to the reception level obtained by measuring the signal transmitted from the first base station. Control device. 基地局における無線パラメータ変更要求生成方法であって、
前記移動局が測位した前記移動局の位置情報に基づいて前記移動局が自局以外の第１の基地局から所定の距離内にいるかを判断し、前記所定の距離内にいる場合、前記移動局が前記第１の基地局から送信される信号を測定して得た受信レベルに応じて、前記第１の基地局の無線パラメータの変更要求を作成する作成ステップと、
前記作成した無線パラメータの変更要求を前記第１の基地局に送信する送信ステップと
を有することを特徴とする無線パラメータ変更要求生成方法。 A radio parameter change request generation method in a base station,
Based on the location information of the mobile station measured by the mobile station, it is determined whether the mobile station is within a predetermined distance from a first base station other than its own station. A creation step of creating a request for changing a radio parameter of the first base station according to a reception level obtained by measuring a signal transmitted from the first base station by the station;
A radio parameter change request generation method comprising: a transmission step of transmitting the created radio parameter change request to the first base station.
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Cited By (113)

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Publication number Priority date Publication date Assignee Title
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US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
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US9742521B2 (en) 2014-11-20 2017-08-22 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
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US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9787412B2 (en) 2015-06-25 2017-10-10 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9793955B2 (en) 2015-04-24 2017-10-17 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9838078B2 (en) 2015-07-31 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US9847850B2 (en) 2014-10-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US9866276B2 (en) 2014-10-10 2018-01-09 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9871558B2 (en) 2014-10-21 2018-01-16 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US9876571B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9887447B2 (en) 2015-05-14 2018-02-06 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US9906269B2 (en) 2014-09-17 2018-02-27 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US9912033B2 (en) 2014-10-21 2018-03-06 At&T Intellectual Property I, Lp Guided wave coupler, coupling module and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US9929755B2 (en) 2015-07-14 2018-03-27 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US9954286B2 (en) 2014-10-21 2018-04-24 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9973416B2 (en) 2014-10-02 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US10051630B2 (en) 2013-05-31 2018-08-14 At&T Intellectual Property I, L.P. Remote distributed antenna system
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US10069185B2 (en) 2015-06-25 2018-09-04 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10498044B2 (en) 2016-11-03 2019-12-03 At&T Intellectual Property I, L.P. Apparatus for configuring a surface of an antenna
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
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US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
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US10777873B2 (en) 2016-12-08 2020-09-15 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10797781B2 (en) 2015-06-03 2020-10-06 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
US10819035B2 (en) 2016-12-06 2020-10-27 At&T Intellectual Property I, L.P. Launcher with helical antenna and methods for use therewith
US10916969B2 (en) 2016-12-08 2021-02-09 At&T Intellectual Property I, L.P. Method and apparatus for providing power using an inductive coupling
US10938108B2 (en) 2016-12-08 2021-03-02 At&T Intellectual Property I, L.P. Frequency selective multi-feed dielectric antenna system and methods for use therewith

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI492656B (en) * 2012-12-25 2015-07-11 廣達電腦股份有限公司 Wireless access points
JP5622951B2 (en) * 2014-01-29 2014-11-12 パナソニック株式会社 Cordless telephone system and safety management device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5145333B2 (en) * 2007-04-27 2013-02-13 株式会社エヌ・ティ・ティ・ドコモ Area forming method by designated base station, mobile station and base station
US20100113035A1 (en) * 2008-11-05 2010-05-06 Suat Eskicioglu Location-based handovers from a macrocell to a femtocell using event-triggered measurement reporting

Cited By (127)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US10051630B2 (en) 2013-05-31 2018-08-14 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9674711B2 (en) 2013-11-06 2017-06-06 At&T Intellectual Property I, L.P. Surface-wave communications and methods thereof
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9906269B2 (en) 2014-09-17 2018-02-27 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9973416B2 (en) 2014-10-02 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9866276B2 (en) 2014-10-10 2018-01-09 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9847850B2 (en) 2014-10-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9876587B2 (en) 2014-10-21 2018-01-23 At&T Intellectual Property I, L.P. Transmission device with impairment compensation and methods for use therewith
US9954286B2 (en) 2014-10-21 2018-04-24 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9960808B2 (en) 2014-10-21 2018-05-01 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9912033B2 (en) 2014-10-21 2018-03-06 At&T Intellectual Property I, Lp Guided wave coupler, coupling module and methods for use therewith
US9705610B2 (en) 2014-10-21 2017-07-11 At&T Intellectual Property I, L.P. Transmission device with impairment compensation and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9871558B2 (en) 2014-10-21 2018-01-16 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US9742521B2 (en) 2014-11-20 2017-08-22 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9749083B2 (en) 2014-11-20 2017-08-29 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
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US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US9876571B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US9793955B2 (en) 2015-04-24 2017-10-17 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9831912B2 (en) 2015-04-24 2017-11-28 At&T Intellectual Property I, Lp Directional coupling device and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9887447B2 (en) 2015-05-14 2018-02-06 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US10650940B2 (en) 2015-05-15 2020-05-12 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US9935703B2 (en) 2015-06-03 2018-04-03 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
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US9967002B2 (en) 2015-06-03 2018-05-08 At&T Intellectual I, Lp Network termination and methods for use therewith
US10812174B2 (en) 2015-06-03 2020-10-20 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US10050697B2 (en) 2015-06-03 2018-08-14 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
US9912382B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US10797781B2 (en) 2015-06-03 2020-10-06 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US10069185B2 (en) 2015-06-25 2018-09-04 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9787412B2 (en) 2015-06-25 2017-10-10 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
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US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
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US9806818B2 (en) 2015-07-23 2017-10-31 At&T Intellectual Property I, Lp Node device, repeater and methods for use therewith
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US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
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US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
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US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10535928B2 (en) 2016-11-23 2020-01-14 At&T Intellectual Property I, L.P. Antenna system and methods for use therewith
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US10755542B2 (en) 2016-12-06 2020-08-25 At&T Intellectual Property I, L.P. Method and apparatus for surveillance via guided wave communication
US10694379B2 (en) 2016-12-06 2020-06-23 At&T Intellectual Property I, L.P. Waveguide system with device-based authentication and methods for use therewith
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10727599B2 (en) 2016-12-06 2020-07-28 At&T Intellectual Property I, L.P. Launcher with slot antenna and methods for use therewith
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10819035B2 (en) 2016-12-06 2020-10-27 At&T Intellectual Property I, L.P. Launcher with helical antenna and methods for use therewith
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
US10938108B2 (en) 2016-12-08 2021-03-02 At&T Intellectual Property I, L.P. Frequency selective multi-feed dielectric antenna system and methods for use therewith
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US10916969B2 (en) 2016-12-08 2021-02-09 At&T Intellectual Property I, L.P. Method and apparatus for providing power using an inductive coupling
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US10777873B2 (en) 2016-12-08 2020-09-15 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10200900B2 (en) 2016-12-09 2019-02-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices

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