JP5909830B2 - 無線装置における、静電容量センサと送信デューティ・サイクル制御を用いたsar制御 - Google Patents
無線装置における、静電容量センサと送信デューティ・サイクル制御を用いたsar制御 Download PDFInfo
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- 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
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- 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/288—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account the usage mode, e.g. hands-free, data transmission, telephone
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/283—Power depending on the position of the mobile
-
- 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
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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Description
本願は、発明の名称を「無線装置における、静電容量センサと送信デューティ・サイクル制御を用いたSAR制御」とした、2012年1月4日出願の米国特許出願第13/343、281号に対する優先権を主張し、引用によりその全体をあたかも再現したかのように本明細書に取り込む。
125 整合回路
850 センサ‐1
860 センサ‐n
870 メモリ
880 プロセッサ
Claims (18)
- 無線送信器と、
キャパシタンス・センサと、
前記無線送信器と前記キャパシタンス・センサに接続されたプロセッサと、
を備えた比吸収率(SAR)制御を提供するための無線装置であって、
前記プロセッサは、
第1のキャパシタンス測定値を前記キャパシタンス・センサから受信し、
前記無線装置に対する人間の身体の相対的近接度を前記第1のキャパシタンス測定値に基づいて推定し、
前記推定に基づく期間内にターゲット送信時間を前記無線送信器に対して決定し、
前記期間における前記無線送信器の送信時間が前記ターゲット送信時間を超えた場合には前記期間の一部で前記無線送信器をスイッチオフする、
ように構成され、
前記キャパシタンス・センサは第1のキャパシタと第2のキャパシタに接続され、前記第1のキャパシタンス測定値は前記第1のキャパシタに対応し、前記キャパシタンス・センサは、前記第2のキャパシタの第2のキャパシタンス測定値を前記プロセッサに提供するように構成され、前記プロセッサはさらに前記第2のキャパシタンス測定値を受信するように構成され、相対的近接度の推定はさらに前記第2のキャパシタンス測定値に基づく、
無線装置。 - 前記プロセッサはさらに、
前記無線装置に関する人間の身体の存在を前記第1のキャパシタンス測定値と前記第2のキャパシタンス測定値に基づいて判定し、
人間の身体が存在すると判定された場合には、前記相対的近接度を推定し、SAR制御が必要かどうかを前記相対的近接度の前記推定に基づいて判定し、
SAR制御が必要である場合には、チャネル指標メトリックを閾値と比較しおよび前記チャネル指標メトリックが前記閾値より小さい場合には前記ターゲット送信時間を決定し、
前記チャネル指標メトリックが前記閾値より大きい場合には、電力バックオフ因子を決定し最大電力レベルから前記電力バックオフ因子を差し引いた電力レベルで前記期間において送信する、
ように構成された、請求項1に記載の無線装置。 - キャパシタンス領域のテーブルと対応するターゲット送信デューティ・サイクルとを格納するように構成されたメモリをさらに備え、前記プロセッサは前記メモリに接続され、前記ターゲット送信時間を決定するステップは、前記第1のキャパシタンス測定値と前記第2のキャパシタンス測定値を使用して前記テーブル内のターゲット送信デューティ・サイクルを検索するステップを含み、前記ターゲット送信時間は前記ターゲット送信デューティ・サイクルに前記期間を乗じたものに等しい、請求項2に記載の無線装置。
- 前記無線送信器はアンテナを備え、前記無線装置はさらに、前記アンテナが有効かどうかを示す信号を生成するように構成されたアンテナ状態回路を備え、前記プロセッサは、前記信号を受信するように構成され、前記プロセッサは、前記アンテナが有効である場合にのみ前記期間の一部で前記無線送信器をスイッチオフするように構成された、請求項1に記載の無線装置。
- 第2のアンテナを備えた第2の無線送信器をさらに備え、ターゲット送信時間を判定するステップはさらに前記第2の無線送信器を介した第2の送信に対する第1の送信器を介した第1の送信の優先度に基づき、前記プロセッサはさらに、前記第2の無線送信器に対する第2のターゲット送信時間を前記推定と前記優先度に基づいて決定するように構成された、請求項4に記載の無線装置。
- 前記期間の先頭と末端は、フレーム/スーパーフレームの先頭と末端とそれぞれ同期され、前記プロセッサはさらに、制御送信に対して予約されたタイムスロットにおいて制御送信の代わりにデータ送信を可能とするように構成された、請求項3に記載の無線装置。
- 第1のキャパシタの第1のキャパシタンス測定値をキャパシタンス・センサから受信するステップであって、前記キャパシタンス・センサは無線装置に接続され、前記無線装置は無線送信器を備えるステップと、
前記無線装置に対する人間の身体の相対的近接度を前記第1のキャパシタンス測定値に基づいて推定するステップと、
前記推定に基づく期間内にターゲット送信時間を前記無線送信器に対して決定するステップと、
前記期間における前記無線送信器の送信時間が前記ターゲット送信時間を超えた場合に前記期間の一部で前記無線送信器をスイッチオフするステップと、
を含み、
第2のキャパシタの第2のキャパシタンス測定値を前記キャパシタンス・センサから受信するステップをさらに含み、前記相対的近接度を推定するステップはさらに前記第2のキャパシタンス測定値に基づく、
比吸収率(SAR)制御を提供するための方法。 - 前記第1のキャパシタンス測定値と前記第2のキャパシタンス測定値に基づいて前記無線装置に関する人間の身体の存在を決定するステップと、
前記人間の身体が存在すると判定された場合には、前記相対的近接度を推定し、SAR制御が必要かどうかを相対的近接度の前記推定に基づいて判定するステップと、
SAR制御が必要である場合には、チャネル指標メトリックを閾値と比較するステップと、
前記チャネル指標メトリックが前記閾値より小さい場合には、前記期間における前記無線送信器の送信時間が前記ターゲット送信時間を超えた場合に、前記ターゲット送信時間を決定し、前記期間の一部で前記無線送信器をスイッチオフするステップと、
前記チャネル指標メトリックが前記閾値より小さくない場合には、電力バックオフ因子を決定し、第1の期間において最大電力レベルから前記電力バックオフ因子を差し引いた電力レベルで送信するステップと、
をさらに含む、請求項7に記載の方法。 - 前記ターゲット送信時間を決定するステップは、前記第1のキャパシタンス測定値と前記第2のキャパシタンス測定値を用いてキャパシタンス領域のテーブル内のターゲット送信デューティ・サイクルと対応する送信デューティ・サイクルとを検索するステップを含む、請求項8に記載の方法。
- 前記無線送信器はアンテナを含み、前記方法はさらに前記アンテナが有効であるかどうかを示すアンテナ検出回路から信号を受信するステップを含み、前記無線送信器のスイッチオフは前記アンテナが有効である場合にのみ行われる、請求項7に記載の方法。
- 前記無線装置は第2の無線送信器を備え、前記第2の無線送信器は第2のアンテナを備え、前記ターゲット送信時間を決定するステップはさらに前記第2の無線送信器を介した第2の送信に対する第1の送信器を介した第1の送信の優先度に基づき、前記方法はさらに、前記推定と前記優先度に基づいて前記第2の無線送信器に対する第2のターゲット送信時間を決定するステップを含む、請求項10に記載の方法。
- 無線送信器と、
第1のキャパシタンス値と第2のキャパシタンス値を測定するように構成されたキャパシタンス・センサと、
前記無線送信器と前記キャパシタンス・センサに接続されたプロセッサと
を備えた無線装置であって、
前記プロセッサは、
人間の身体が前記無線装置に近接して配置されていると判定し、
前記第1のキャパシタンス値と前記第2のキャパシタンス値に基づいて前記人間の身体が配置されている複数の近接領域のうち第1の近接領域を特定し、
期間における前記無線送信器の送信時間を監視し、前記送信時間がターゲット送信時間を超過した場合には前記期間の一部における前記無線送信器による送信を禁止し、前記ターゲット送信時間を超過する送信時間は前記第1の近接領域に位置する人間に対する1つまたは複数の比吸収率(SAR)準拠基準を満たさない、
ように構成された、無線装置。 - 前記第1の近接領域に関連付けられた第1のサーフェスと前記複数の近接領域のうち第2の領域に関連付けられた第2のサーフェスをさらに備えた、請求項12に記載の無線装置。
- 前記プロセッサはさらに、チャネル指標メトリックを閾値と比較し、および前記チャネル指標メトリックが前記閾値より小さい場合には前記ターゲット送信時間を決定し、および前記チャネル指標メトリックが前記閾値より大きい場合には、電力バックオフ因子を決定して最大電力レベルから前記電力バックオフ因子を差し引いた電力レベルで前記期間において送信するように構成された、請求項13に記載の無線装置。
- キャパシタンス領域のテーブルと対応する送信デューティ・サイクルとを格納するように構成されたメモリをさらに備え、前記プロセッサは前記メモリに接続され、前記ターゲット送信時間を決定するステップは、前記第1のキャパシタンス値と前記第2のキャパシタンス値を用いて前記テーブル内のターゲット送信デューティ・サイクルを検索するステップを含み、前記ターゲット送信時間は前記ターゲット送信デューティ・サイクルに前記期間を乗じたものに等しい、請求項14に記載の無線装置。
- 前記無線送信器はアンテナを含み、前記無線装置はさらに、前記アンテナが有効かどうかを示す信号を生成するように構成されたアンテナ状態回路を備え、前記プロセッサは前記信号を受信するように構成され、前記プロセッサは、前記アンテナが有効である場合にのみ前記期間の一部で前記無線送信器をスイッチオフするように構成された、請求項13に記載の無線装置。
- 第2のアンテナを備えた第2の無線送信器をさらに備え、ターゲット送信時間を決定するステップはさらに前記第2の無線送信器を介した第2の送信に対する第1の送信器を介した第1の送信の優先度に基づき、前記プロセッサはさらに、前記特定された第1の近接領域と前記優先度に基づいて前記第2の無線送信器に対する第2のターゲット送信時間を決定するように構成された、請求項16に記載の無線装置。
- 前記期間の先頭と末端は、フレーム/スーパーフレームの先頭と末端とそれぞれ同期され、前記プロセッサはさらに、制御送信に対して予約されたタイムスロットにおいて制御送信の代わりにデータ送信を可能とするように構成された、請求項15に記載の無線装置。
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Application Number | Priority Date | Filing Date | Title |
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US13/343,281 US8831528B2 (en) | 2012-01-04 | 2012-01-04 | SAR control using capacitive sensor and transmission duty cycle control in a wireless device |
US13/343,281 | 2012-01-04 | ||
PCT/US2013/020105 WO2013103690A1 (en) | 2012-01-04 | 2013-01-03 | Sar control using capacitive sensor and transmission duty cycle control in a wireless device |
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JP2015517230A JP2015517230A (ja) | 2015-06-18 |
JP5909830B2 true JP5909830B2 (ja) | 2016-04-27 |
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US (1) | US8831528B2 (ja) |
EP (1) | EP2786501B1 (ja) |
JP (1) | JP5909830B2 (ja) |
KR (1) | KR101663146B1 (ja) |
CN (1) | CN104718708B (ja) |
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