JP2012517191A - 光ファイバベースの分散型アンテナシステム、構成要素、及びその較正のための関連の方法 - Google Patents
光ファイバベースの分散型アンテナシステム、構成要素、及びその較正のための関連の方法 Download PDFInfo
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- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
- H04B10/25754—Star network topology
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- H—ELECTRICITY
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- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
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Abstract
【選択図】図11B
Description
本出願は、全体が本明細書において引用により組み込まれている2009年2月3日出願の「分散型アンテナシステム」という名称の米国特許仮出願番号第61/149,553号明細書に対する優先権を請求するものである。
本発明の開示の技術は、リモートアンテナユニットに光ファイバ上で無線周波数(RF)信号を配信するための光ファイバベースの分散型アンテナシステム及び関連の制御システム及び方法に関する。
610 HEU
612 主端子ボード
620 建造物インフラストラクチャー
630 カバレージエリア
650 RAU
Claims (61)
- 少なくとも1つの基地局(BTS)からダウンリンク電気無線周波数(RF)信号を受信するように構成されたダウンリンク基地局(BTS)インタフェースと、
前記ダウンリンクBTSインタフェースから前記ダウンリンク電気RF信号を受信し、それを少なくとも1つの通信ダウンリンク上のダウンリンク光ファイバ無線(RoF)信号に変換し、かつ
少なくとも1つのリモートアンテナユニット(RAU)からアップリンクRoF信号を受信し、それを少なくとも1つの通信アップリンク上のアップリンクRF電気信号に変換する、
ように構成された少なくとも1つの光インタフェースモジュール(OIM)と、
前記少なくとも1つの通信アップリンクから前記アップリンク電気RF信号を受信し、それを前記少なくとも1つのBTSに通信するように構成されたアップリンクBTSインタフェースと、
前記少なくとも1つの通信ダウンリンクに対する全ダウンリンク損失を判断し、
前記全ダウンリンク損失からダウンリンクBTS損失を判断し、
前記ダウンリンクBTS損失に基づいて前記ダウンリンクBTSインタフェースにおけるダウンリンクBTS較正利得を較正し、かつ
前記少なくとも1つのRAUにおける少なくとも1つのRAU較正利得を前記全ダウンリンク損失から前記ダウンリンクBTS損失を差し引いたものとして較正する、
ように構成されたコントローラと、
を含むことを特徴とする無線通信システム。 - 前記コントローラは、前記ダウンリンクBTSインタフェースにおける前記ダウンリンクBTS較正利得を該ダウンリンクBTSインタフェースにおける少なくとも1つの減衰器における該ダウンリンクBTS較正利得を設定することによって較正するように構成されることを特徴とする請求項1に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのRAUにおける前記少なくとも1つのRAU較正利得を該少なくとも1つのRAUにおける少なくとも1つの減衰器における該少なくとも1つのRAU較正利得を設定することによって較正するように構成されることを特徴とする請求項1又は請求項2に記載の無線通信システム。
- 前記コントローラは、少なくとも1つのダウンリンク較正信号を前記少なくとも1つの通信ダウンリンク上で通信させるように更に構成されることを特徴とする請求項1、請求項2、又は請求項3に記載の無線通信システム。
- 前記少なくとも1つのダウンリンク較正信号の周波数が、前記ダウンリンク電気RF信号の周波数と異なることを特徴とする請求項4に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つの通信ダウンリンク上で前記少なくとも1つのダウンリンク較正信号の入力信号強度を受信するように構成されることを特徴とする請求項4に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのRAUでの前記少なくとも1つのダウンリンク較正信号の末端信号強度を該少なくとも1つのダウンリンク較正信号の前記入力信号強度と比較することによって前記全ダウンリンク損失を判断するように構成されることを特徴とする請求項6に記載の無線通信システム。
- 前記少なくとも1つのダウンリンク較正信号は、各々が異なる周波数を有する複数のダウンリンク較正信号から構成されることを特徴とする請求項4に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのダウンリンク較正信号を前記少なくとも1つの通信アップリンク上で送信させるように更に構成されることを特徴とする請求項4に記載の無線通信システム。
- 前記コントローラは、電気RF信号及びRoF信号が前記少なくとも1つの通信ダウンリンク上で通信される間に前記BTS較正利得及び前記少なくとも1つのRAU較正利得を較正するように構成されることを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、又は請求項9に記載の無線通信システム。
- 前記少なくとも1つのRAUは、複数のRAUで構成され、
前記コントローラは、前記ダウンリンクBTS較正利得及び前記少なくとも1つのRAU較正利得を前記複数のRAUの各々に対して較正するように構成される、
ことを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、又は請求項10に記載の無線通信システム。 - 前記コントローラは、少なくとも1つのポイントにおいて前記ダウンリンクBTS較正利得を通信するように更に構成されることを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、請求項10、又は請求項11に記載の無線通信システム。
- 前記コントローラは、少なくとも1つのポイントにおいて前記少なくとも1つのRAU較正利得を通信するように更に構成されることを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、請求項10、請求項11、又は請求項12に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのBTSに通信されるように構成された複数のBTS帯域に対して前記BTS較正利得及び前記少なくとも1つのRAU較正利得を較正するように更に構成されることを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、請求項10、請求項11、請求項12、又は請求項13に記載の無線通信システム。
- 前記コントローラは、前記ダウンリンクBTSインタフェースにおける前記BTS較正利得及び前記少なくとも1つのRAUにおける前記少なくとも1つのRAU較正利得を自動的に較正するように構成されることを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、請求項10、請求項11、請求項12、請求項13、又は請求項14に記載の無線通信システム。
- 前記コントローラは、
前記少なくとも1つの通信アップリンクに対する全アップリンク損失を判断し、
前記全アップリンク損失からアップリンクBTS損失を判断し、
前記アップリンクBTS損失に基づいて前記アップリンクBTSインタフェースにおけるアップリンクBTS較正利得を較正し、かつ
前記少なくとも1つのOIMにおける少なくとも1つのOIM較正利得を前記全アップリンク損失から前記アップリンクBTS損失を差し引いたものとして較正する、
ように更に構成される、
ことを特徴とする請求項1、請求項2、請求項3、請求項4、請求項8、請求項9、請求項10、請求項11、請求項12、請求項13、請求項14、又は請求項15に記載の無線通信システム。 - 前記少なくとも1つのOIMは、複数のOIMで構成され、
前記コントローラは、前記複数のOIMの各々に対して別々のOIM較正利得を較正するように構成される、
ことを特徴とする請求項16に記載の無線通信システム。 - 前記コントローラは、前記少なくとも1つの通信アップリンク上で少なくとも1つのアップリンク較正信号を送信させるように更に構成されることを特徴とする請求項16又は請求項17に記載の無線通信システム。
- 前記少なくとも1つのアップリンク較正信号の周波数が、前記アップリンク電気RF信号の周波数と異なることを特徴とする請求項18に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つの通信アップリンク上で前記少なくとも1つのアップリンク較正信号の入力信号強度を受信するように構成されることを特徴とする請求項18に記載の無線通信システム。
- 前記コントローラは、前記アップリンクBTSインタフェースでの前記少なくとも1つのアップリンク較正信号の末端信号強度を前記少なくとも1つのRAUでの該少なくとも1つのアップリンク較正信号の前記入力信号強度と比較することによって前記全アップリンク損失を判断するように構成されることを特徴とする請求項20に記載の無線通信システム。
- 前記コントローラは、電気RF信号及びRoF信号が前記少なくとも1つの通信アップリンク上で通信される間に前記アップリンクBTSインタフェースにおける前記アップリンクBTS較正利得及び前記少なくとも1つのOIMにおける前記少なくとも1つのOIM較正利得を較正するように構成されることを特徴とする請求項17、請求項18、請求項19、請求項20、又は請求項21に記載の無線通信システム。
- 前記コントローラは、前記アップリンクBTSインタフェースにおける前記アップリンクBTS較正利得及び前記少なくとも1つのOIMにおける前記少なくとも1つのOIM較正利得を自動的に較正するように構成されることを特徴とする請求項17、請求項18、請求項19、請求項20、請求項21、又は請求項22に記載の無線通信システム。
- 無線通信システムを較正する方法であって、
少なくとも1つの基地局(BTS)からダウンリンクBTSインタフェースに電気無線周波数(RF)信号を搬送し、かつ少なくとも1つの光インタフェースモジュール(OIM)によって該電気RF信号から変換された光ファイバ無線(RoF)信号を少なくとも1つのリモートアンテナユニット(RAU)も搬送するように構成された少なくとも1つの通信ダウンリンクに対する全ダウンリンク損失を判断する段階と、
前記全ダウンリンク損失からダウンリンクBTS損失を判断する段階と、
前記ダウンリンクBTS損失に基づいて前記ダウンリンクBTSインタフェースにおけるダウンリンクBTS較正利得を較正する段階と、
前記少なくとも1つのRAUにおける少なくとも1つのRAU較正利得を前記全ダウンリンク損失から前記ダウンリンクBTS損失を差し引いたものとして較正する段階と、
を含むことを特徴とする方法。 - 前記コントローラは、前記少なくとも1つのRAUにおける前記少なくとも1つのRAU較正利得を該少なくとも1つのRAUの少なくとも1つの減衰器における該少なくとも1つのRAU較正利得を設定することによって較正するように構成されることを特徴とする請求項24に記載の方法。
- 前記少なくとも1つの通信ダウンリンク上に少なくとも1つのダウンリンク較正信号を注入する段階を更に含むことを特徴とする請求項24又は請求項25に記載の方法。
- 前記少なくとも1つの通信ダウンリンク上で前記少なくとも1つのダウンリンク較正信号の入力信号強度を受信する段階を更に含むことを特徴とする請求項26に記載の方法。
- 前記少なくとも1つのRAUでの前記少なくとも1つのダウンリンク較正信号の末端信号強度を該少なくとも1つのダウンリンク較正信号の前記入力信号強度と比較することによって前記全ダウンリンク損失を判断する段階を更に含むことを特徴とする請求項27に記載の方法。
- 少なくとも1つの通信アップリンク上で前記少なくとも1つのダウンリンク較正信号を通信する段階を更に含むことを特徴とする請求項26に記載の方法。
- 前記少なくとも1つのBTSに通信される複数のBTS帯域に対する前記ダウンリンクBTS較正利得及び前記少なくとも1つのRAU較正利得を較正する段階を更に含むことを特徴とする請求項25、請求項26、請求項27、請求項28、又は請求項29に記載の方法。
- 前記ダウンリンクBTSインタフェースにおける前記BTS較正利得及び前記少なくとも1つのRAUにおける前記少なくとも1つのRAU較正利得を自動的に較正する段階を更に含むことを特徴とする請求項25、請求項26、請求項27、請求項28、請求項29、又は請求項30に記載の方法。
- 前記少なくとも1つのOIMによって電気RF信号に変換されるRoF信号を前記少なくとも1つのRAUからアップリンクBTSインタフェースに搬送するように構成された少なくとも1つの通信アップリンクに対する全アップリンク損失を判断する段階と、
前記全アップリンク損失からアップリンクBTS損失を判断する段階と、
前記アップリンクBTS損失に基づいて前記アップリンクBTSインタフェースにおけるアップリンクBTS較正利得を較正する段階と、
前記少なくとも1つのOIMにおける少なくとも1つのOIM較正利得を前記全アップリンク損失から前記アップリンクBTS損失を差し引いたものとして較正する段階と、
を更に含むことを特徴とする請求項25、請求項26、請求項27、請求項28、請求項29、請求項30、又は請求項31に記載の方法。 - 前記少なくとも1つのOIMは、複数のOIMを含み、
前記複数のOIMの各々に対して別々のOIM較正利得を較正する段階、
を更に含むことを特徴とする請求項32に記載の方法。 - 前記少なくとも1つの通信アップリンク上で通信される少なくとも1つのアップリンク較正信号を注入する段階を更に含むことを特徴とする請求項32又は請求項33に記載の方法。
- 前記少なくとも1つの通信アップリンク上で前記少なくとも1つのアップリンク較正信号の入力信号強度を受信する段階を更に含むことを特徴とする請求項34に記載の方法。
- 前記アップリンクBTSインタフェースでの前記少なくとも1つのアップリンク較正信号の末端信号強度を前記少なくとも1つのRAUでの前記少なくとも1つのアップリンク較正信号の前記入力信号強度と比較することによって前記全アップリンク損失を判断する段階を更に含むことを特徴とする請求項35に記載の方法。
- 電気RF信号及びRoF信号が前記少なくとも1つの通信アップリンク上で通信される間に前記アップリンクBTSインタフェース及び前記少なくとも1つのOIMを較正する段階を更に含むことを特徴とする請求項32、請求項33、請求項34、請求項35、又は請求項36に記載の方法。
- 前記アップリンクBTSインタフェースにおける前記BTS較正利得を自動的に較正し、かつ前記少なくとも1つのOIMにおける前記少なくとも1つのOIM較正利得を較正する段階を更に含むことを特徴とする請求項32、請求項33、請求項34、請求項35、請求項36、又は請求項37に記載の方法。
- 少なくとも1つの基地局(BTS)からダウンリンク電気無線周波数(RF)信号を受信するように構成されたダウンリンク基地局(BTS)インタフェースと、
前記ダウンリンクBTSインタフェースから前記ダウンリンク電気RF信号を受信し、それを少なくとも1つの通信ダウンリンク上のダウンリンク光ファイバ無線(RoF)信号に変換し、かつ
少なくとも1つのリモートアンテナユニット(RAU)からアップリンクRoF信号を受信し、それを少なくとも1つの通信アップリンク上のアップリンク電気RF信号に変換する、
ように構成された少なくとも1つの光インタフェースモジュール(OIM)と、
前記少なくとも1つの通信アップリンクから前記アップリンク電気RF信号を受信し、それを前記少なくとも1つのBTSに通信するように構成されたアップリンクBTSインタフェースと、
前記少なくとも1つの通信ダウンリンク上に少なくとも1つの較正信号を注入し、
前記少なくとも1つの通信ダウンリンクにおける少なくとも1つのダウンリンク利得を該少なくとも1つの通信ダウンリンクにおける前記少なくとも1つの較正信号に生じた損失に基づいて較正し、
前記少なくとも1つの較正信号を前記少なくとも1つの通信ダウンリンクから前記少なくとも1つの通信アップリンクに切り換えさせ、かつ
前記少なくとも1つの通信アップリンクにおける少なくとも1つのアップリンク利得を該少なくとも1つの通信アップリンクにおける前記少なくとも1つの較正信号に生じた損失に基づいて較正する、
ように構成されたコントローラと、
を含むことを特徴とする無線通信システム。 - 前記コントローラは、前記ダウンリンクBTSインタフェースにおける前記ダウンリンクBTS較正利得を該ダウンリンクBTSインタフェースにおける少なくとも1つの減衰器における該ダウンリンクBTS較正利得を設定することによって較正するように構成されることを特徴とする請求項39に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのRAUにおける少なくとも1つのRAU較正利得を該少なくとも1つのRAUにおける少なくとも1つの減衰器における該少なくとも1つのRAU較正利得を設定することによって較正するように構成されることを特徴とする請求項39又は請求項40に記載の無線通信システム。
- 前記少なくとも1つの較正信号の周波数が、前記ダウンリンク電気RF信号の周波数と異なることを特徴とする請求項39、請求項40、又は請求項41に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つの通信ダウンリンク上で前記少なくとも1つの較正信号の入力信号強度を受信するように構成されることを特徴とする請求項39、請求項40、請求項41、又は請求項42に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つのRAUでの前記少なくとも1つの較正信号の末端信号強度を該少なくとも1つの較正信号の前記入力信号強度と比較することによって前記全ダウンリンク損失を判断するように構成されることを特徴とする請求項43に記載の無線通信システム。
- 前記少なくとも1つの較正信号は、各々が異なる周波数を有する複数の較正信号から構成されることを特徴とする請求項39、請求項40、請求項41、請求項42、又は請求項43に記載の無線通信システム。
- 前記コントローラは、電気RF信号及びRoF信号が前記少なくとも1つの通信ダウンリンク上で通信される間に前記ダウンリンクBTS較正利得及び前記少なくとも1つのRAU較正利得を較正するように構成されることを特徴とする請求項41、請求項42、請求項43、又は請求項45に記載の無線通信システム。
- 前記コントローラは、前記ダウンリンクBTSインタフェースにおける前記ダウンリンクBTS較正利得及び前記少なくとも1つのRAUにおける前記少なくとも1つのRAU較正利得を自動的に較正するように構成されることを特徴とする請求項41、請求項42、請求項43、請求項45、又は請求項46に記載の無線通信システム。
- 前記コントローラは、
前記少なくとも1つの通信アップリンクに対する全アップリンク損失を判断し、
前記全アップリンク損失からアップリンクBTS損失を判断し、
前記アップリンクBTS損失に基づいて前記アップリンクBTSインタフェースにおけるアップリンクBTS較正利得を較正し、かつ
前記少なくとも1つのOIMにおける少なくとも1つのOIM較正利得を前記全アップリンク損失から前記アップリンクBTS損失を差し引いたものとして較正する、
ように更に構成される、
ことを特徴とする請求項39、請求項40、請求項41、請求項42、請求項43、請求項45、請求項46、又は請求項47に記載の無線通信システム。 - 前記少なくとも1つのOIMは、複数のOIMで構成され、
前記コントローラは、前記複数のOIMの各々に対して別々のOIM較正利得を較正するように構成される、
ことを特徴とする請求項48に記載の無線通信システム。 - 前記コントローラは、前記少なくとも1つの通信アップリンク上で少なくとも1つのアップリンク較正信号を送信させるように更に構成されることを特徴とする請求項48又は請求項49に記載の無線通信システム。
- 前記少なくとも1つのアップリンク較正信号の周波数が、前記アップリンク電気RF信号の周波数と異なることを特徴とする請求項50に記載の無線通信システム。
- 前記コントローラは、前記少なくとも1つの通信アップリンク上で前記少なくとも1つのアップリンク較正信号の入力信号強度を受信するように構成されることを特徴とする請求項50に記載の無線通信システム。
- 前記コントローラは、前記アップリンクBTSインタフェースでの前記少なくとも1つのアップリンク較正信号の末端信号強度を前記少なくとも1つのRAUでの該少なくとも1つのアップリンク較正信号の前記入力信号強度と比較することによって前記全アップリンク損失を判断するように構成されることを特徴とする請求項52に記載の無線通信システム。
- 前記コントローラは、電気RF信号及びRoF信号が前記少なくとも1つの通信アップリンク上で通信される間に前記アップリンクBTSインタフェースにおける前記アップリンクBTS較正利得及び前記少なくとも1つのOIMにおける前記少なくとも1つのOIM較正利得を較正するように構成されることを特徴とする請求項48、請求項49、請求項50、請求項51、又は請求項52に記載の無線通信システム。
- 前記コントローラは、前記アップリンクBTSインタフェースにおける前記BTS較正利得及び前記少なくとも1つのOIMにおける前記少なくとも1つのOIM較正利得を自動的に較正するように構成されることを特徴とする請求項48、請求項49、請求項50、請求項51、又は請求項52に記載の無線通信システム。
- 少なくとも1つの基地局(BTS)からダウンリンク電気無線周波数(RF)信号を受信するように構成されたダウンリンク基地局(BTS)インタフェースと、
前記ダウンリンクBTSインタフェースから前記ダウンリンク電気RF信号を受信し、それを少なくとも36個の通信ダウンリンクの少なくとも1つ上のダウンリンク光ファイバ無線(RoF)信号に変換し、かつ
少なくとも3個のリモートアンテナユニット(RAU)からアップリンクRoF信号を受信し、それを少なくとも36個の通信アップリンクの少なくとも1つ上のアップリンク電気RF信号に変換する、
ように各々が構成された少なくとも12個の光インタフェースモジュール(OIM)と、
前記少なくとも36個の通信アップリンクから前記アップリンク電気RF信号を受信し、それを前記少なくとも1つのBTSに通信するように構成されたアップリンクBTSインタフェースと、
前記36個の通信ダウンリンクの各々に対する少なくとも1つのダウンリンク利得を較正するように構成されたコントローラと、
を含むことを特徴とする無線通信システム。 - 前記コントローラは、前記36個の通信ダウンリンクの各々の上で第1及び第2のダウンリンク較正信号を通信させるように更に構成されることを特徴とする請求項56に記載の無線通信システム。
- 前記第1のダウンリンク較正信号の周波数が、915MHzであることを特徴とする請求項57に記載の無線通信システム。
- 前記第2のダウンリンク較正信号の周波数が、2017MHzであることを特徴とする請求項58に記載の無線通信システム。
- 前記第2のダウンリンク較正信号の周波数が、2017MHzであることを特徴とする請求項57に記載の無線通信システム。
- 前記コントローラは、
前記少なくとも36個の通信アップリンクに対する全アップリンク損失を判断し、
前記全アップリンク損失からアップリンクBTS損失を判断し、
前記アップリンクBTS損失に基づいて前記アップリンクBTSインタフェースにおけるBTS較正利得を較正し、かつ
前記少なくとも12個のOIMにおける少なくとも1つのOIM較正利得を前記全アップリンク損失から前記アップリンクBTS損失を差し引いたものとして較正する、
ように更に構成される、
ことを特徴とする請求項56に記載の無線通信システム。
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AU2010210771B2 (en) | 2015-09-17 |
JP5480916B2 (ja) | 2014-04-23 |
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AU2010210771A1 (en) | 2011-09-15 |
EP2394379B1 (en) | 2016-12-28 |
CN102369678A (zh) | 2012-03-07 |
WO2010091004A1 (en) | 2010-08-12 |
EP2394379A1 (en) | 2011-12-14 |
US9112611B2 (en) | 2015-08-18 |
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US20120134673A1 (en) | 2012-05-31 |
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