JP5986289B2 - D2d通信のための多重アクセススキーム及び信号構造 - Google Patents
D2d通信のための多重アクセススキーム及び信号構造 Download PDFInfo
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Description
[D2D信号構造]
[分散型のスケジュール制御]
[干渉管理のためのパワー検出及び制御]
[実施例]
[項目1]
ユーザ機器(UE)デバイスであって、
eNB(進化型ノードB)と通信するため、及びD2D(デバイスツーデバイス)通信のためのエアインターフェースを提供する無線送信機と、
前記無線送信機に接続された処理回路と
を備え、
前記処理回路は、
前記eNBからのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信し、
第2UEとのD2D通信セッションを確立し、
受信された複数のD2Dスロットのプリアンブルを使用して、複数の自動利得制御(AGC)を実行し、
前記第2UEへの及びからの複数のD2D送信は、前記プリアンブルで始まり、複数のOFDM又はSC−FDMシンボルを含む各D2Dスロットで複数のD2Dスロットにまとめられる、デバイス。
[項目2]
前記プリアンブルは、時間領域の中の繰り返しの信号シーケンスである、項目1に記載のデバイス。
[項目3]
前記処理回路は、さらに、自己相関を介して、受信された複数のD2Dスロットの前記プリアンブルを検出する、項目2に記載のデバイス。
[項目4]
各D2Dスロットは、1又は複数の参照シンボルを含む、項目2又は3に記載のデバイス。
[項目5]
前記処理回路は、さらに、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知すること、及び
前記現在のD2Dスロットがビジー状態でない場合に、後続のD2Dスロットの開始で、前記第2UEにD2D送信を送信することによって、
D2Dスロットに関して、キャリア検知多重アクセス(CSMA)を使用して、前記第2UEとの通信セッションを開始する、項目2から4のいずれか一項に記載のデバイス。
[項目6]
前記処理回路は、さらに、
前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始すること、
ビジー状態でない各D2Dスロットが検出された後に、前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに、前記カウントダウンを一時中断すること、及び
前記カウントダウンがゼロに達した後に、次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信することによって、
前記第2UEとの通信セッションを開始する、項目5に記載のデバイス。
[項目7]
前記カウントダウンのための特定の数は、ランダムに又は擬似乱数で選択される、項目6に記載のデバイス。
[項目8]
D2Dスロットは、さらに、いくつのD2Dスロットが送信デバイスによって連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間を含む、項目5から7のいずれか一項に記載のデバイス。
[項目9]
前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する、項目8に記載のデバイス。
[項目10]
前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、スリープ状態に入る、項目9に記載のデバイス。
[項目11]
複数のD2Dスロットは、時間及び/又は周波数の領域において連続的に番号が付けられる、項目5から10のいずれか一項に記載のデバイス。
[項目12]
前記処理回路は、さらに、各D2Dスロットの中で送信パワーレベルの指標を送信する、項目1から11のいずれか一項に記載のデバイス。
[項目13]
前記プリアンブルは、前記送信パワーレベルを示す周期性を有する時間領域の中の繰り返しの信号シーケンスである、項目12に記載のデバイス。
[項目14]
前記処理回路は、前記プリアンブル及び送信パワーレベルの到着を検出するための異なる複数の相関期間を有する複数の相関器のバンクをさらに備える、項目13に記載のデバイス。
[項目15]
前記処理回路は、さらに、1又は複数の参照シンボルの中で送信パワーレベルの前記指標を送信し、特定された参照シンボル又は複数の参照シンボルの特定されたシーケンスは、前記送信パワーレベルを示す、項目12から14のいずれか一項に記載のデバイス。
[項目16]
前記処理回路は、さらに、前記プリアンブルに続く物理層ヘッダの中のエンコードされた複数のビットとして、送信パワーレベルの前記指標を送信する、項目12から15のいずれか一項に記載のデバイス。
[項目17]
前記物理層ヘッダは、トランスポートブロックを構成し、連続的に送信される複数のD2Dスロットの数の指標をさらに備える、項目16に記載のデバイス。
[項目18]
前記処理回路は、さらに、チャネル予約リクエストに応答して、前記eNBからのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信し、D2D通信のための送信パワーレベルの指標及び予約の持続時間は、前記チャネル予約リクエストの中に含まれる、項目1から17のいずれか一項に記載のデバイス。
[項目19]
前記チャネル予約リクエストは、前記デバイスに近接する他の複数のUEが前記チャネル予約及び送信パワーレベルを知ることができるように十分に高いパワーで送信される、項目18に記載のデバイス。
[項目20]
ユーザ機器(UE)デバイスであって、
D2D(デバイスツーデバイス)通信のためのエアインターフェースを提供する無線送信機と、
前記無線送信機に接続された処理回路と
を備え、
前記処理回路は、D2Dスロットに関連して、キャリア検知多重アクセス(CSMA)を使用して、第2UEとのD2D通信セッションを開始し、
前記第2UEへの及びからの複数のD2D送信は、複数のOFDM又はSC−FDMシンボルを含む各D2Dスロットで複数のD2Dスロットにまとめられ、
前記処理回路は、さらに、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知し、
前記現在のD2Dスロットがビジー状態でない場合、後続のD2Dスロットの開始で前記第2UEにD2D送信を送信する、デバイス。
[項目21]
前記処理回路は、さらに、
前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始すること、
ビジー状態でない各D2Dスロットが検出された後に前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに前記カウントダウンを一時中断すること、及び
前記カウントダウンがゼロに達した後に次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信することによって、
前記第2UEとの通信セッションを開始する、項目20に記載のデバイス。
[項目22]
前記カウントダウンのための特定の数は、ランダムに又は擬似乱数で選択される、項目21に記載のデバイス。
[項目23]
D2Dスロットは、いくつのD2Dスロットが送信デバイスによって連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間をさらに含む、項目20から22のいずれか一項に記載のデバイス。
[項目24]
前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する、項目23に記載のデバイス。
[項目25]
前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、スリープ状態に入る、項目24に記載のデバイス。
[項目26]
ユーザ機器(UE)デバイスを動作させる方法であって、
進化型ノードB(eNB)からのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信する段階と、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知する段階と、
前記現在のD2Dスロットがビジー状態でない場合、後続のD2Dスロットの開始で第2UEにD2D送信を送信する段階と
を備え、
前記第2UEへの又はからの複数のD2D送信は、複数のOFDM又はSC−FDMシンボルを含む各D2Dスロットで複数のD2Dスロットにまとめられる、方法。
[項目27]
前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始する段階と、
ビジー状態でない各D2Dスロットが検出された後に前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに前記カウントダウンを一時中断する段階と、
前記カウントダウンがゼロに達した後に次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信する段階と
をさらに備える、項目26に記載の方法。
[項目28]
前記D2D送信の中に前記第2UEによる使用のためのプリアンブルを含める段階
をさらに備える項目26又は27に記載の方法。
[項目29]
いくつのD2Dスロットが連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間を含める段階
をさらに備える項目26から28のいずれか一項に記載の方法。
[項目30]
D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する段階
をさらに備える項目26から29のいずれか一項に記載の方法。
Claims (31)
- ユーザ機器(UE)デバイスであって、
eNB(進化型ノードB)と通信するため、及びD2D(デバイスツーデバイス)通信のためのエアインターフェースを提供する無線送信機と、
前記無線送信機に接続された処理回路と
を備え、
前記処理回路は、
前記eNBからのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信し、
第2UEとのD2D通信セッションを確立し、
受信された複数のD2Dスロットのプリアンブルを使用して、複数の自動利得制御(AGC)を実行し、
他のUEによる後続の送信のために利用される送信パワーレベルの指標を含む複数のD2Dスロットを送信し、
前記第2UEへの及びからのD2D送信は、前記複数のD2Dスロットを送信することを含み、
前記複数のD2Dスロットのそれぞれは、前記プリアンブルで始まり、複数のOFDM又はSC−FDMシンボルを含む、デバイス。 - 前記プリアンブルは、時間領域の中の繰り返しの信号シーケンスである、請求項1に記載のデバイス。
- 前記処理回路は、さらに、自己相関を介して、受信された複数のD2Dスロットの前記プリアンブルを検出する、請求項2に記載のデバイス。
- 各D2Dスロットは、1又は複数の参照シンボルを含む、請求項2又は3に記載のデバイス。
- 前記処理回路は、さらに、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知すること、及び
前記現在のD2Dスロットがビジー状態でない場合に、後続のD2Dスロットの開始で、前記第2UEにD2D送信を送信することによって、
D2Dスロットに関して、キャリア検知多重アクセス(CSMA)を使用して、前記第2UEとの通信セッションを開始する、請求項2から4のいずれか一項に記載のデバイス。 - 前記処理回路は、さらに、
前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始すること、
ビジー状態でない各D2Dスロットが検出された後に、前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに、前記カウントダウンを一時中断すること、及び
前記カウントダウンがゼロに達した後に、次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信することによって、
前記第2UEとの通信セッションを開始する、請求項5に記載のデバイス。 - 前記カウントダウンのための特定の数は、ランダムに又は擬似乱数で選択される、請求項6に記載のデバイス。
- D2Dスロットは、さらに、いくつのD2Dスロットが送信デバイスによって連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間を含む、請求項5から7のいずれか一項に記載のデバイス。
- 前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する、請求項8に記載のデバイス。
- 前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、スリープ状態に入る、請求項9に記載のデバイス。
- 複数のD2Dスロットは、時間及び/又は周波数の領域において連続的に番号が付けられる、請求項5から10のいずれか一項に記載のデバイス。
- 前記プリアンブルは、前記送信パワーレベルを示す周期性を有する時間領域の中の繰り返しの信号シーケンスである、請求項1から11のいずれか一項に記載のデバイス。
- 前記処理回路は、前記プリアンブル及び送信パワーレベルの到着を検出するための異なる複数の相関期間を有する複数の相関器のバンクをさらに備える、請求項12に記載のデバイス。
- 前記処理回路は、さらに、1又は複数の参照シンボルの中で送信パワーレベルの前記指標を送信し、特定された参照シンボル又は複数の参照シンボルの特定されたシーケンスは、前記送信パワーレベルを示す、請求項1から13のいずれか一項に記載のデバイス。
- 前記処理回路は、さらに、前記プリアンブルに続く物理層ヘッダの中のエンコードされた複数のビットとして、送信パワーレベルの前記指標を送信する、請求項1から14のいずれか一項に記載のデバイス。
- 前記物理層ヘッダは、トランスポートブロックを構成し、連続的に送信される複数のD2Dスロットの数の指標をさらに備える、請求項15に記載のデバイス。
- 前記処理回路は、さらに、チャネル予約リクエストに応答して、前記eNBからのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信し、D2D通信のための送信パワーレベルの指標及び予約の持続時間は、前記チャネル予約リクエストの中に含まれる、請求項1から16のいずれか一項に記載のデバイス。
- 前記チャネル予約リクエストは、前記デバイスに近接する他の複数のUEが前記チャネル予約及び送信パワーレベルを知ることができるように十分に高いパワーで送信される、請求項17に記載のデバイス。
- ユーザ機器(UE)デバイスであって、
D2D(デバイスツーデバイス)通信のためのエアインターフェースを提供する無線送信機と、
前記無線送信機に接続された処理回路と
を備え、
前記処理回路は、D2Dスロットに関連して、キャリア検知多重アクセス(CSMA)を使用して、第2UEとのD2D通信セッションを開始し、
前記第2UEへの及びからのD2D送信は、複数のD2Dスロットを送信することを含み、
前記複数のD2Dスロットのそれぞれは、複数のOFDM又はSC−FDMシンボルを含み、
前記処理回路は、さらに、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知し、
前記現在のD2Dスロットがビジー状態でない場合、後続のD2Dスロットの開始で前記第2UEにD2D送信を送信し、
他のUEによる後続の送信のために利用される送信パワーレベルの指標を含む前記複数のD2Dスロットを送信する、デバイス。 - 前記処理回路は、さらに、
前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始すること、
ビジー状態でない各D2Dスロットが検出された後に前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに前記カウントダウンを一時中断すること、及び
前記カウントダウンがゼロに達した後に次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信することによって、
前記第2UEとの通信セッションを開始する、請求項19に記載のデバイス。 - 前記カウントダウンのための特定の数は、ランダムに又は擬似乱数で選択される、請求項20に記載のデバイス。
- D2Dスロットは、いくつのD2Dスロットが送信デバイスによって連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間をさらに含む、請求項19から21のいずれか一項に記載のデバイス。
- 前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する、請求項22に記載のデバイス。
- 前記処理回路は、さらに、D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、スリープ状態に入る、請求項23に記載のデバイス。
- ユーザ機器(UE)デバイスを動作させる方法であって、
進化型ノードB(eNB)からのD2D通信のための複数の時間周波数リソースの複数の割り当てを受信する段階と、
送信動作が存在するか否かを決定するために現在のD2Dスロットを検知する段階と、
前記現在のD2Dスロットがビジー状態でない場合、後続のD2Dスロットの開始で第2UEにD2D送信を送信する段階と、
他のUEによる後続の送信のために利用される送信パワーレベルの指標を含む複数のD2Dスロットを送信する段階と
を備え、
前記第2UEへの又はからのD2D送信は、前記複数のD2Dスロットを送信することを含み、
前記複数のD2Dスロットのそれぞれは、複数のOFDM又はSC−FDMシンボルを含む、方法。 - 前記現在のD2Dスロットがビジー状態でない場合に、選択された数でカウントダウンを開始する段階と、
ビジー状態でない各D2Dスロットが検出された後に前記カウントダウンをデクリメントし、ビジー状態のD2Dスロットが検出されたときに前記カウントダウンを一時中断する段階と、
前記カウントダウンがゼロに達した後に次のD2Dスロットの開始で前記第2UEに前記D2D送信を送信する段階と
をさらに備える、請求項25に記載の方法。 - 前記D2D送信の中に前記第2UEによる使用のためのプリアンブルを含める段階
をさらに備える請求項25又は26に記載の方法。 - いくつのD2Dスロットが連続的に送信されるかを特定する、制御チャネルの中のエンコードされた予約時間を含める段階
をさらに備える請求項25から27のいずれか一項に記載の方法。 - D2Dスロットの中に予約時間が検出されたときに、前記予約時間が終了するまで、複数のD2Dスロットの検知を中断する段階
をさらに備える請求項25から28のいずれか一項に記載の方法。 - コンピュータに、請求項25から29のいずれか一項に記載の方法を実行させるためのプログラム。
- 請求項30に記載のプログラムを格納するコンピュータ可読媒体。
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