JP2010519868A - 無線通信システムの状態情報送信方法及び受信装置 - Google Patents
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- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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Abstract
本発明は、受信側RLCエンティティが、利用可能な無線リソースを考慮し、その無線リソースのサイズに合う状態PDUを構成し、その構成した状態PDUを送信側RLCエンティティに送信することにより、RLCプロトコルがデッドロック状態になることを防止する。
Description
このフィールドは、該当RLC PDUがRLC Data PDUであるかRLC Control PDUであるかを表す。
このフィールドは、該当Control PDUのタイプを表す。現在、RLC Control PDUにはSTATUS PDUのみが定義されている。
ACK_SNは、下記の2つに定義される。
これは、今回のNACK_SNエレメント(すなわち、NACK_SN又はNACK_SN、SOstart、SOend)の次に他のNACK_SNエレメントが存在するか否かを表す。
これは、受信に失敗したAMD PDU又はAMD PDU segmentのRLC SNである。
これは、今回のNACK_SNに該当するSOstartとSOendフィールドが存在するか否かを表す。
これらは、NACK_SNに該当するPDUのうち一部分(segment)のみがNACKである場合に使用される。一部分の最初のバイトはSOstartに該当し、最後のバイトはSOendに該当する。
・ 順次受信したAMD PDUのうち最後のAMD PDUの次のAMD PDUに該当するSN(Sequence Number)値を保持する。
・ 受信ウィンドウ外にあるAMD PDUのうち最初のAMD PDUのSNの値を保持する。
・ HARQ reorderingを管理するタイマーであるT_reorderingを駆動させたRLC Data PDUの次のRLC Data PDUに該当するSN値を保持する。
・ この状態変数は、STATUS PDUにHARQ reorderingが完了したRLC Data PDUに関する情報のみを含ませるために使用される。
・ 受信側AM RLCが受信したRLC Data PDUのうち最高のSNの次のSN値、すなわち、受信側AM RLCが受信していない最初のRLC Data PDUのSN値を保持する。
・ 受信側AM RLCはエンティティ生成後の初期状態である。
・ Out−of−sequenceであるAMD PDU5を受信すると、VR(X)=6にアップデートし、T_reorderingを駆動させる。
・ VR(R)=VR(MS)に該当するAMD PDUであるAMD PDU0を受信すると、VR(R)とVR(MS)を全て1に更新し、AMD PDU0は上位層に送信する。
・ AMD PDU6を受信してもVR(R)、VR(MS)、VR(X)には何の変化もなく、t=T2と同様の状況を維持する。
・ AMD PDU8を受信してもVR(R)、VR(MS)、VR(X)には何の変化もなく、t=T3と同様の状況を維持する。
・ T_reorderingが完了すると、まずVR(MS)をVR(X)以上のAMD PDUのうち受信していない最初のAMD PDUであるAMD PDU7に更新する。
1−1)受信側AM RLCは、含まれるNACK_SNリストを考慮し、最終STATUS PDUのサイズが与えられた無線リソースより大きくならないようにACK_SNをVR(R)≦SN≦VR(MS)の間の任意の値に設定する。新しく設定するACK_SNの値は、受信側RLCの現在利用可能な無線リソースの能力に依存する。
2−1)VT(A)≦SN<NACK_SN1であるPDUは送信に成功したと判断する。
1−1)ACK_SNをVR(MS)に設定する。
2−1)VT(A)≦SN<NACK_SN1であるPDUは送信に成功したと判断する。
Claims (13)
- 移動通信システムで状態情報を送信する方法であって、
確認モードデータ(AMD)PDU又はAMD PDUの一部の肯定及び/又は否定確認応答を提供するために用いられる状態プロトコルデータユニット(PDU)を構成する段階と、
構成された状態PDUをピアRLCエンティティに送信する段階と、を含み、
前記構成する段階は、前記構成された状態PDUが利用可能な無線リソースの全体サイズに合うように前記利用可能な無線リソースを考慮して行われることを特徴とする方法。 - 前記構成する段階は、
シーケンスナンバーの昇順にNACKエレメントを含む段階と、
どのAMD PDUまで前記状態情報が前記状態PDUに含まれるかを示す情報を含む段階と、を含むことを特徴とする請求項1に記載の方法。 - 前記情報は、ACK_SNを言及し、前記ACK_SNは、前記状態PDUにおいてNACK_SNで示されない次に完全に受信しなかったAMD PDUのSNに設定されることを特徴とする請求項2に記載の方法。
- 前記NACKエレメントは、前記構成された状態PDUが利用可能な無線リソースのサイズに合うように、受信していない最初のAMD PDU又はAMD PDUの一部から受信していない特定AMD PDUまでをシーケンスナンバーの昇順に含まれることを特徴とする請求項2に記載の方法。
- 前記受信していないAMD PDU又はAMD PDUの一部は、2つの連続して受信していないPDU間に存在しないことを特徴とする請求項4に記載の方法。
- 前記受信していないAMD PDU又はAMD PDUの一部は、2つの連続して受信していないPDU間に存在できるようにすることを特徴とする請求項4に記載の方法。
- 前記利用可能な無線リソースは、下位層によって示されるRLC PDUの全体サイズを言及することを特徴とする請求項1に記載の方法。
- 前記RLC PDUの全体サイズについての表示を下位層(MAC)から受ける段階をさらに含むことを特徴とする請求項1に記載の方法。
- 前記構成する段階は、受信していない最初のAMD PDU又は受信していないAMD PDUの一部のNACK_SNエレメントを含み、また、受信していない他のAMD PDU又は受信していない他のAMD PDUの一部の少なくとも1つのNACK_SNエレメントをオプションとしてさらに含むことによって行われることを特徴とする請求項1に記載の方法。
- 前記NACK_SNエレメントは、NACK_SNと、オプションとしてのSOstart及びSOendと、を有することを特徴とする請求項9に記載の方法。
- 前記状態PDUが部分状態PDUである場合、前記状態PDUが前記部分状態PDUであることを示すインジケータを用いることを特徴とする請求項1に記載の方法。
- 移動通信システムで受信側無線リンク制御(RLC)エンティティが送信側RLCエンティティにデータ(PDU)の状態情報を送信する方法において、
受信側RLCエンティティが、利用可能な無線リソースを考慮して、RLCデータPDUの受信状態に関する情報を含むSTATUS PDUを構成する段階と、
前記受信側RLCエンティティが、構成されたSTATUS PDUを送信側RLCに送信する段階と、を含み、
前記構成する段階は、
前記利用可能な無線リソースを用いることによって送信可能な数のNACK_SNを選択的に含む段階と、
ACK_SNの値をVR(MS)値に設定する段階と、を含むことを特徴とする方法。 - 移動通信システムの受信側無線リンク制御(RLC)エンティティであって、
利用可能な無線リソースを確認し、前記利用可能な無線リソースを考慮してSTATUS PDUを構成し、前記利用可能な無線リソースのサイズに合うように前記STATUS PDUに否定確認応答(NACK)エレメントを含ませ、ACK_SNの値を設定し、前記構成されたSTATUS PDUをピアRLCエンティティに送信するモジュールを含む受信側無線リンク制御(RLC)エンティティ。
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US2526708P | 2008-01-31 | 2008-01-31 | |
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KR1020090006356A KR101467798B1 (ko) | 2008-01-31 | 2009-01-23 | 무선통신시스템에서의 상태정보 전송 방법 및 수신장치 |
KR10-2009-0006356 | 2009-01-23 | ||
PCT/KR2009/000475 WO2009096743A2 (en) | 2008-01-31 | 2009-01-30 | Method for sending status information in mobile telecommunications system and receiver of mobile telecommunications |
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JP2010511134A Active JP4837128B2 (ja) | 2008-01-31 | 2009-01-30 | ランダム接続でバックオフ情報をシグナリングする方法 |
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