JP6114468B2 - 無線通信システムにおけるランダムアクセス手順を実行するための方法及び装置 - Google Patents
無線通信システムにおけるランダムアクセス手順を実行するための方法及び装置 Download PDFInfo
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- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
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Description
例えば、本願発明は以下の項目を提供する。
(項目1)
無線通信システムにおける端末(UE;user equipment)によるランダムアクセス(RA;random access)手順を実行する方法において、
第1のノード及び第2のノードと接続を確立し;
前記第2のノードにRAプリアンブルを送信し;及び、
RAプリアンブルの送信個数が最大個数に達する場合、前記第2のノードが属するグループ内の全てのセルのアップリンク(UL;uplink)送信を中断することを含む方法。
(項目2)
前記グループは、eNodeB(eNB)により構成されることを特徴とする項目1に記載の方法。
(項目3)
前記グループは、TAG(timing advance group)を含み;及び、
前記TAG内の全てのセルに同じTA(timing advance)が適用されることを特徴とする項目1に記載の方法。
(項目4)
前記UL送信は、PUSCH(physical uplink share channel)送信、PUCCH(physical uplink control channel)送信、RAプリアンブル送信、CSI(channel state information)報告、SR(scheduling request)送信、HARQ(hybrid automatic repeat request)フィードバックまたはSRS(sounding reference signal)送信のうち少なくともいずれか一つを含むことを特徴とする項目1に記載の方法。
(項目5)
前記RAプリアンブルの送信個数が最大個数に達する場合、前記第1のノードに前記RAプリアンブルの送信が失敗したことを指示する指示子を送信することをさらに含む項目1に記載の方法。
(項目6)
前記指示子は、前記第1のノードまたは前記第2のノードのうちいずれか一つにより割り当てられた、問題識別子(problem identifier)、前記第2のノードの物理セル識別子(physical cell identifier)、前記第2のノードのグローバル識別子(global identifier)または前記第2のノードのセル識別子(cell identifier)のうち少なくともいずれか一つを含むことを特徴とする項目5に記載の方法。
(項目7)
前記RAプリアンブルの送信個数が最大個数に達する場合、前記第2のノードとRRC(radio resource control)接続再確立の実行を禁止することをさらに含む項目1に記載の方法。
(項目8)
前記第1のノードは、SRB(signaling radio bearer)が定義されたMeNB(master eNB)であり、
前記第2のノードは、SRBが定義されないSeNB(secondary eNB)であることを特徴とする項目1に記載の方法。
(項目9)
前記第1のノードは、SeNBであり、
前記第2のノードは、MeNBであることを特徴とする項目1に記載の方法。
(項目10)
前記RAプリアンブルは、RAプリアンブルセットから前記端末により任意に選択されることを特徴とする項目1に記載の方法。
(項目11)
前記RAプリアンブルは、eNBにより割り当てられることを特徴とする項目1に記載の方法。
(項目12)
無線通信システムにおける端末(UE;user equipment)において、
無線信号を送信または受信するように構成されるRF(radio frequency)部;及び、
前記RF部と連結されるプロセッサ;を含み、
前記プロセッサは、
第1のノード及び第2のノードと接続を確立し、
前記第2のノードにRAプリアンブルを送信し、及び
RAプリアンブルの送信個数が最大個数に達する場合、前記第2のノードが属するグループ内の全てのセルのアップリンク(UL;uplink)送信を中断するように構成されることを特徴とする端末。
(項目13)
前記グループは、eNodeB(eNB)により構成されることを特徴とする項目12に記載の端末。
(項目14)
前記グループは、TAG(timing advance group)を含み;及び、
前記TAG内の全てのセルに同じTA(timing advance)が適用されることを特徴とする項目12に記載の端末。
(項目15)
前記アップリンク送信は、PUSCH(physical uplink share channel)送信、PUCCH(physical uplink control channel)送信、RAプリアンブル送信、CSI(channel state information)報告、SR(scheduling request)送信、HARQ(hybrid automatic repeat request)フィードバックまたはSRS(sounding reference signal)送信のうち少なくともいずれか一つを含むことを特徴とする項目12に記載の端末。
Claims (9)
- 無線通信システムにおけるUE(user equipment)によりRA(random access)手順を実行する方法であって、前記方法は、
第1のノード及び第2のノードとの接続を確立することであって、前記第1のノードは、MeNB(master evolved NodeB)であり、前記第2のノードは、SeNB(secondary eNB)である、ことと、
前記第2のノードと関連しているグループのセル上で前記第2のノードにRAプリアンブルを送信することと、
RAプリアンブル送信の個数が最大プリアンブル送信と関連している個数に達する場合、前記第2のノードと関連している前記グループの全てのセルへのアップリンク(UL)送信を中断し、前記第1のノードにRA問題を指示する指示子を送信することと
を含む、方法。 - 前記グループは、前記MeNBまたは前記SeNBにより構成される、請求項1に記載の方法。
- 前記UL送信は、PUSCH(physical uplink share channel)送信、PUCCH(physical uplink control channel)送信、RAプリアンブル送信、CSI(channel state information)報告、SR(scheduling request)送信、HARQ(hybrid automatic repeat request)フィードバックまたはSRS(sounding reference signal)送信のうちの少なくとも一つを含む、請求項1に記載の方法。
- 前記指示子は、前記MeNBまたは前記SeNBのうちいずれか一つにより割り当てられた、問題識別子、前記SeNBの物理セル識別子、前記SeNBのグローバル識別子または前記SeNBのセル識別子のうちの少なくとも一つを含む、請求項1に記載の方法。
- 前記SeNBとのRRC(radio resource control)接続再確立の実行を禁止することをさらに含む、請求項1に記載の方法。
- 前記RAプリアンブルは、RAプリアンブルのセットから前記UEにより任意に選択される、請求項1に記載の方法。
- 前記RAプリアンブルは、前記MeNBまたは前記SeNBにより割り当てられる、請求項1に記載の方法。
- メモリと、
RF(radio frequency)部と、
前記メモリ及び前記RF部と連結されるプロセッサと
を含むUE(user equipment)であって、
前記プロセッサは、
第1のノード及び第2のノードとの接続を確立することであって、前記第1のノードは、MeNB(master evolved NodeB)であり、前記第2のノードは、SeNB(secondary eNB)である、ことと、
前記第2のノードと関連しているグループのセル上で前記第2のノードにRA(random access)プリアンブルを送信するように前記RF部を制御することと、
RAプリアンブル送信の個数が最大プリアンブル送信と関連している個数に達する場合、前記第2のノードと関連している前記グループの全てのセルへのアップリンク(UL)送信を中断し、前記第1のノードにRA問題を指示する指示子を送信するように前記RF部を制御することと
を実行するように構成される、UE。 - 前記グループは、前記MeNBまたは前記SeNBにより構成される、請求項8に記載のUE。
Applications Claiming Priority (3)
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US201361856070P | 2013-07-19 | 2013-07-19 | |
US61/856,070 | 2013-07-19 | ||
PCT/KR2014/006414 WO2015009043A1 (en) | 2013-07-19 | 2014-07-16 | Method and apparatus for performing random access procedure in wireless communication system |
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JP2016519554A JP2016519554A (ja) | 2016-06-30 |
JP6114468B2 true JP6114468B2 (ja) | 2017-04-12 |
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US (2) | US9699823B2 (ja) |
EP (2) | EP3022982B1 (ja) |
JP (1) | JP6114468B2 (ja) |
KR (2) | KR101764049B1 (ja) |
CN (2) | CN109362125B (ja) |
WO (1) | WO2015009043A1 (ja) |
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