JPWO2021003278A5 - - Google Patents

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JPWO2021003278A5
JPWO2021003278A5 JP2021578034A JP2021578034A JPWO2021003278A5 JP WO2021003278 A5 JPWO2021003278 A5 JP WO2021003278A5 JP 2021578034 A JP2021578034 A JP 2021578034A JP 2021578034 A JP2021578034 A JP 2021578034A JP WO2021003278 A5 JPWO2021003278 A5 JP WO2021003278A5
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クラウド無線アクセスネットワーク（Ｃ－ＲＡＮ）であって、
複数のリモートユニット（ＲＵ）であって、各々が、無線周波数（ＲＦ）信号を少なくとも１つのユーザ機器（ＵＥ）と交換するように構成されている、複数のリモートユニット（ＲＵ）と、
フロントホールインターフェースを介して前記複数のＲＵに通信可能に結合された中央ユニットであって、前記中央ユニットが、
前記フロントホールインターフェースにわたって前記複数のＲＵに送信されるべきデータのセットを決定することと、
前記複数のＲＵのうちの少なくとも１つへの前記データのセットの各々のマッピングを決定することと、
前記マッピングに基づいて、ビットマスクをデータのセットに追加することであって、前記ビットマスクが複数のビットを有し、前記ビットマスクが前記複数のＲＵのうちの異なる１つにマッピングされるビット位置を有し、前記ビットマスクが、前記データのセットが対象としている各ＲＵを示し、前記ビットマスクにおける前記複数のビットが、前記データのセットが対象としている、前記複数のＲＵのうちの２以上を示す、追加することと、
前記ビットマスクを有する前記データのセットを、前記複数のＲＵにブロードキャストすることと、を行うように構成されている、中央ユニットと、を含む、クラウド無線アクセスネットワーク（Ｃ－ＲＡＮ）。 A cloud radio access network (C-RAN),
a plurality of remote units (RUs), each configured to exchange radio frequency (RF) signals with at least one user equipment (UE);
A central unit communicatively coupled to the plurality of RUs via a fronthaul interface, the central unit comprising:
determining a set of data to be transmitted to the plurality of RUs over the fronthaul interface;
determining a mapping of each of the data sets to at least one of the plurality of RUs;
adding a bitmask to a set of data based on the mapping, the bitmask having a plurality of bits, the bits that the bitmask maps to different ones of the plurality of RUs. position, wherein the bitmask indicates each RU to which the set of data is directed, and the plurality of bits in the bitmask indicates two of the plurality of RUs to which the set of data is directed. indicating or adding to
a central unit configured to: broadcast said set of data with said bitmask to said plurality of RUs. 前記中央ユニットが、３ＧＰＰ第５世代通信システムにおいて動作するように構成された分散ユニット（ＤＵ）である、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein the central unit is a distributed unit (DU) configured to operate in a 3GPP 5th generation communication system. 前記中央ユニットが、３ＧＰＰ長期進化（ＬＴＥ）通信システムにおいて動作するように構成されたベースバンドコントローラである、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein the central unit is a baseband controller configured to operate in a 3GPP Long Term Evolution (LTE) communication system. 前記データのセットのうちの少なくとも１つがユーザプレーンデータを含む、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein at least one of said sets of data comprises user plane data. 前記ビットマスクの長さが、前記Ｃ－ＲＡＮの初期設定中に事前決定および構成されており、前記ビットマスクの前記長さが、前記複数のＲＵの数と等しいビットの数である、請求項１に記載のＣ－ＲＡＮ。 3. A length of said bitmask is predetermined and configured during initialization of said C-RAN, said length of said bitmask being a number of bits equal to a number of said plurality of RUs. 1. The C-RAN according to 1. 前記複数のＲＵの各々が、前記データのセットを、前記データのセットについての前記ビットマスクにおいて当該ＲＵに対応するビットが設定されているときのみ復号化する、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein each of the plurality of RUs decodes the set of data only if the bit corresponding to that RU is set in the bitmask for the set of data. . 前記データのセットのうちの２以上が、単一のパケット伝送において送信される、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein two or more of said sets of data are sent in a single packet transmission. 前記マッピングが、前記Ｃ－ＲＡＮの物理リソースブロック（ＰＲＢ）グループに基づく、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein the mapping is based on physical resource block (PRB) groups of the C-RAN. 前記マッピングが、前記Ｃ－ＲＡＮの周波数再利用層に基づく、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein said mapping is based on a frequency reuse layer of said C-RAN. 特定のデータのセットの前記マッピングが、前記特定のデータのセットが関連する少なくとも１つのチャネルに基づく、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein said mapping of a particular set of data is based on at least one channel with which said particular set of data is associated. 前記フロントホールインターフェースが、少なくとも１つのスイッチを含むＥＴＨＥＲＮＥＴネットワークを利用する、請求項１に記載のＣ－ＲＡＮ。 The C-RAN of claim 1, wherein said fronthaul interface utilizes an ETHERNET network including at least one switch. クラウド無線アクセスネットワーク（Ｃ－ＲＡＮ）の中央ユニットによって実施される方法であって、前記方法が、
前記Ｃ－ＲＡＮのフロントホールインターフェースにわたって複数のリモートユニット（ＲＵ）に送信されるべきデータのセットを決定することであって、前記複数のＲＵが、前記フロントホールインターフェースを介して前記中央ユニットに通信可能に結合される、決定することと、
前記複数のＲＵのうちの少なくとも１つへの前記データのセットの各々のマッピングを決定することと、
前記マッピングに基づいて、ビットマスクをデータのセットに追加することであって、前記ビットマスクが複数のビットを有し、前記ビットマスクが前記複数のＲＵのうちの異なる１つにマッピングされるビット位置を有し、前記ビットマスクが、前記データのセットが対象としている各ＲＵを示し、前記ビットマスクにおける前記複数のビットが、前記データのセットが対象としている、前記複数のＲＵのうちの２以上を示す、追加することと、
前記ビットマスクを有する前記データのセットを、前記複数のＲＵにブロードキャストすることと、を含む、方法。 A method implemented by a central unit of a Cloud Radio Access Network (C-RAN), said method comprising:
determining a set of data to be transmitted to a plurality of remote units (RUs) over a fronthaul interface of said C-RAN, said plurality of RUs communicating to said central unit via said fronthaul interface; Possibly combined with determining,
determining a mapping of each of the data sets to at least one of the plurality of RUs;
adding a bitmask to a set of data based on the mapping, the bitmask having a plurality of bits, the bits that the bitmask maps to different ones of the plurality of RUs. position, wherein the bitmask indicates each RU to which the set of data is directed, and the bits in the bitmask are two of the RUs to which the set of data is directed. indicating or adding to
and broadcasting the set of data with the bitmask to the plurality of RUs. 前記中央ユニットが、３ＧＰＰ第５世代通信システムにおいて動作するように構成された分散ユニット（ＤＵ）である、請求項１２に記載の方法。 13. The method of claim 12, wherein the central unit is a distributed unit (DU) configured to operate in a 3GPP fifth generation communication system. 前記中央ユニットが、３ＧＰＰ長期進化（ＬＴＥ）通信システムにおいて動作するように構成されたベースバンドコントローラである、請求項１２に記載の方法。 13. The method of claim 12, wherein the central unit is a baseband controller configured to operate in a 3GPP Long Term Evolution (LTE) communication system. 前記データのセットのうちの少なくとも１つがユーザプレーンデータを含む、請求項１２に記載の方法。 13. The method of claim 12, wherein at least one of said sets of data comprises user plane data. 前記ビットマスクの長さが、前記Ｃ－ＲＡＮの初期設定中に事前決定および構成されており、前記ビットマスクの前記長さが、前記複数のＲＵの数と等しいビットの数である、請求項１２に記載の方法。 3. A length of said bitmask is predetermined and configured during initialization of said C-RAN, said length of said bitmask being a number of bits equal to a number of said plurality of RUs. 12. The method according to 12. 前記複数のＲＵの各々が、前記データのセットを、前記データのセットについての前記ビットマスクにおいて当該ＲＵに対応するビットが設定されているときのみ復号化する、請求項１２に記載の方法。 13. The method of claim 12, wherein each of the plurality of RUs decodes the set of data only if the bit corresponding to that RU is set in the bitmask for the set of data. 前記データのセットのうちの２以上が、単一のパケット伝送において送信される、請求項１２に記載の方法。 13. The method of claim 12, wherein two or more of said sets of data are sent in a single packet transmission. 前記マッピングが、前記Ｃ－ＲＡＮの物理リソースブロック（ＰＲＢ）グループに基づく、請求項１２に記載の方法。 13. The method of claim 12, wherein the mapping is based on physical resource block (PRB) groups of the C-RAN. 前記マッピングが、前記Ｃ－ＲＡＮの周波数再利用層に基づく、請求項１２に記載の方法。 13. The method of claim 12, wherein said mapping is based on a frequency reuse layer of said C-RAN. 特定のデータのセットの前記マッピングが、前記特定のデータのセットが関連する少なくとも１つのチャネルに基づく、請求項１２に記載の方法。 13. The method of claim 12, wherein said mapping of a particular set of data is based on at least one channel with which said particular set of data is associated. 前記フロントホールインターフェースが、少なくとも１つのスイッチを含むＥＴＨＥＲＮＥＴネットワークを利用する、請求項１２に記載の方法。 13. The method of claim 12, wherein said fronthaul interface utilizes an ETHERNET network including at least one switch.
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US202062956402P 2020-01-02 2020-01-02
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