JP6424396B2 - 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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- 230000003321 amplification Effects 0.000 description 1
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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 (21)
- 1又は複数の他のユーザ機器(UE)と直接的なデバイスツーデバイス(D2D)通信を行うために構成されるUEの装置であって、
前記装置は、
送受信回路と、
処理回路と
を備え、
前記処理回路は、
D2D通信のための複数のリソースの割り当てを、拡張型ノードB(eNB)から受信し、
単一搬送波周波数分割多重(SC−FDM)技術に従って、物理D2D制御チャネルの複数のリソースエレメント(複数のRE)内のD2D送信のための制御情報を変調し、
前記SC−FDM技術に従って、物理D2D共有チャネルの複数のRE内のD2D送信のためのデータを変調し、
シグナリングに基づく複数の前記D2D送信のための同期情報を他の装置に提供し、
D2D通信のために前記eNBにより割り当られる前記複数のリソース内の送信に対して、前記物理D2D制御チャネル及び前記物理D2D共有チャネルの復調のために設定される復調基準信号(DMRS)を生成するように構成され、
前記物理D2D制御チャネルの前記複数のRE及び前記物理D2D共有チャネルの前記複数のREは、D2D通信のために前記eNBにより割り当てられる前記複数のリソース内にある、装置。 - 周波数ホッピングが有効である場合、前記物理D2D共有チャネルの前記複数のREは、予め定められたホッピングパターンに従って決定される、請求項1に記載の装置。
- 前記UEは、複数の前記D2D送信のためのサイクリックプレフィックスを含むように構成され、
複数の前記D2D送信のための前記サイクリックプレフィックスの長さは、前記eNBへの複数のアップリンク送信に用いられるサイクリックプレフィックスの長さとは異なる、請求項1又は2に記載の装置。 - 複数の前記D2D送信のための前記サイクリックプレフィックスの前記長さは、前記複数のアップリンク送信のための前記サイクリックプレフィックスの前記長さより短い、請求項3に記載の装置。
- 前記SC−FDM技術は、単一のキャリア周波数上に複数のシンボルの変調を有する、請求項1から4のいずれか一項に記載の装置。
- 前記送受信回路は、直交周波数分割多重技術に従って、複数のキャリア周波数上での送信が設定可能であり、かつ、前記SC−FDM技術に従って、単一のキャリア周波数上での送信が設定可能であり、
前記処理回路は、複数の前記D2D送信のために、単一のキャリア周波数の複数の送信を前記送受信回路に設定し、かつ、前記eNBと通信するために、マルチキャリア送信を前記送受信回路に設定する、請求項1から5のいずれか一項に記載の装置。 - 前記UEは、前記eNBからD2D通信情報を受信するようにさらに構成され、
前記同期情報は、前記eNBから受信した前記D2D通信情報に基づく、請求項5又は6に記載の装置。 - 前記同期情報は、前記eNBから受信した複数の信号から導出される、請求項5又は6に記載の装置。
- 前記同期情報は、他のUEから受信したシグナリングに基づく、請求項5又は6に記載の装置。
- 前記UEは、複数の前記D2D送信の前のプリアンブルを送信するようにさらに構成される、請求項1から9のいずれか一項に記載の装置。
- 1又は複数のアンテナをさらに備える、請求項1から10のいずれか一項に記載の装置。
- 1又は複数の他のユーザ機器(UE)との直接的なデバイスツーデバイス(D2D)通信をUEに設定する前記UEの処理回路に、
単一搬送波周波数分割多重(SC−FDM)技術に従って、物理D2D制御チャネルの複数のリソースエレメント(複数のRE)内でD2D送信のための制御情報を変調する手順と、
前記SC−FDM技術に従って、物理D2D共有チャネルの複数のRE内のD2D送信のためのデータを変調する手順と、
周波数ホッピングが有効である場合、予め定められたホッピングパターンに従って、前記物理D2D共有チャネルの前記複数のREを決定する手順と
を実行させ、
前記物理D2D制御チャネルの前記複数のRE及び前記物理D2D共有チャネルの前記複数のREは、D2D通信のための拡張型ノードB(eNB)により割り当てられる複数のリソース内にある、プログラム。 - 前記処理回路に、
D2D通信のための複数のリソースの前記割り当てを、前記eNBから受信する手順と、
前記eNBから受信されるシグナリングに基づく複数の前記D2D送信のための同期情報を他の装置に提供する手順と、
前記D2D通信のために前記eNBにより割り当てられる前記複数のリソース内の送信に対して、前記物理D2D制御チャネル及び前記物理D2D共有チャネルの復調のために設定される復調基準信号(DMRS)を生成する手順と
をさらに実行させるための、請求項12に記載のプログラム。 - 前記UEは、複数の前記D2D送信のためのサイクリックプレフィックスを含むように構成され、
複数の前記D2D送信のための前記サイクリックプレフィックスの長さは、前記eNBへの複数のアップリンク送信に用いられるサイクリックプレフィックスの長さとは異なる、請求項12又は13に記載のプログラム。 - 前記SC−FDM技術は、単一のキャリア周波数上の複数のシンボルの変調を有する、請求項12から14のいずれか一項に記載のプログラム。
- 請求項12から15のいずれか一項に記載のプログラムを格納するコンピュータ可読記憶媒体。
- デバイスツーデバイス(D2D)通信のために構成されるユーザ機器(UE)の装置であって、
前記装置は、
送受信回路と、
処理回路と
を備え、
前記処理回路は、
複数のD2D通信のための複数のリソースの割り当てを、拡張型ノードB(eNB)から受信し、
他のUEからの複数のD2D送信をデコードし、
前記eNBからのシグナリングに基づく前記複数のD2D送信のための同期情報を受信し、
前記複数のD2D通信のために前記eNBにより割り当てられる前記複数のリソース内の前記他のUEにより送信された復調基準信号(DMRS)を受信するように構成され、
前記複数のD2D送信は、物理D2D制御チャネル及び物理D2D共有チャネルを含み、
前記物理D2D制御チャネルは、単一搬送波周波数分割多重(SC−FDM)技術に従って変調される制御情報を含み、
前記物理D2D共有チャネルは、前記SC−FDM技術に従って変調されるデータを含み、
前記DMRSは、前記物理D2D制御チャネルの復調及び前記物理D2D共有チャネルの復調のために設定され、
前記物理D2D制御チャネル及び前記物理D2D共有チャネルは、前記複数のD2D通信のために前記eNBにより割り当てられる前記複数のリソース内にある、装置。 - 周波数ホッピングが有効である場合、前記物理D2D共有チャネルの複数のリソースエレメント(複数のRE)は、予め定められたホッピングパターンに従って決定される、請求項17に記載の装置。
- 前記UEは、前記複数のD2D送信の一部であるサイクリックプレフィックスをデコードするように構成され、
前記サイクリックプレフィックスの長さは、前記eNBへの複数のアップリンク送信に用いられるサイクリックプレフィックスの長さとは異なる、請求項17又は18に記載の装置。 - マルチキャリア通信技術に従って前記eNBから複数の送信を受信するようにさらに構成される、請求項17から19のいずれか一項に記載の装置。
- 前記送受信回路は、直交周波数分割多重技術に従って、複数のキャリア周波数上での受信が設定可能であり、かつ、前記SC−FDM技術に従って、単一のキャリア上での受信が設定可能であり、
前記処理回路は、前記複数のD2D送信のための単一のキャリア周波数の受信を前記送受信回路に設定し、前記eNBとの複数の通信のためのマルチキャリアの受信を前記送受信回路に設定する、請求項17から20のいずれか一項に記載の装置。
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