JP5559366B2 - LTEAdvancedネットワーク及びエンハンストPUCCHにおける遅延を低減するためのコンテンションフリーフィードバックによるコンテンションベース送信 - Google Patents
LTEAdvancedネットワーク及びエンハンストPUCCHにおける遅延を低減するためのコンテンションフリーフィードバックによるコンテンションベース送信 Download PDFInfo
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Description
Claims (16)
- ランダムアクセスのためユーザ装置(UE)により実行される方法であって、
コンテンションシーケンスを物理アップリンク制御チャネル(PUCCH)によりeNB(enhanced−Node B)に送信するステップと、
ユーザデータを物理アップリンク共有チャネル(PUSCH)上で前記eNBに送信するステップであり、前記PUSCH上でのアップリンクデータ送信に対するリソースの事前のグラントはなく、前記ユーザデータと前記コンテンションシーケンスは、同一のサブフレーム内で同時に送信されるステップと、
前記コンテンションシーケンスが前記eNBによって成功裡に受信され、かつ、前記ユーザデータが前記eNBによって成功裡には受信されなかった場合に、アップリンクリソースのグラントに対する手順を実行するステップであり、アップリンクリソースのグラントに対する前記手順は、ランダムアクセスチャネル(RACH)手順か、スケジューリングリクエスト(SR)手順のいずれかを有するステップと、
を有し、
前記ユーザデータが前記eNBによって成功裡に受信された場合に、アップリンクリソースのグラントに対する手順を実行することを控え、
前記コンテンションシーケンスは、前記eNBにより割り当てられるフォーマットに従って前記PUCCH上で送信され、
前記コンテンションシーケンスは、前記UEによりランダムに選択されるか、又は前記eNBにより割り当てられるかいずれかであり、
前記ユーザデータは、アップリンクリソースに対するリクエストを含んでおらず、
前記eNBが前記PUSCH上で送信された前記ユーザデータを検出することはできないが、前記コンテンションシーケンスを検出することができる場合に、前記UEは、前記RACH手順、又は、前記SR手順のいずれかを実行するように構成されている、
方法。 - 前記UEによる前記同一のサブフレーム内の同時送信に対する制限があるとき、固定的なタイムオフセットによって、前記コンテンションシーケンスは、前記PUCCHにより送信され、前記データは、前記PUSCHにより送信される、請求項1記載の方法。
- 前記PUSCHにより送信されるデータは、ユニキャストリソースグラントのフォーマットに従って送信され、
前記データは、前記eNBが前記PUSCHにより前記データを送信したUEを一意的に特定することを可能にするため、前記eNBにより以前に割り当てられた前記UEに一意的な識別情報(ID)を含み、
前記PUSCHにより送信されたデータは、前記UEが以降のアップリンクデータ装置のためアップリンクチャネルリソースを要求していることを示す、請求項2記載の方法。 - 前記eNBが、前記PUSCHにより送信されたデータを検出することができず、前記コンテンションシーケンスを検出することができるとき、
前記eNBは、前記コンテンションシーケンスが前記UEによりランダムに選択されたときには、RACH(Random Access Channel)手順に従うよう構成され、
前記eNBは、前記コンテンションシーケンスが前記UEに割り当てられたときには、スケジューリングリクエスト(SR)手順に従うよう構成される、請求項3記載の方法。 - 前記コンテンションシーケンスと前記データとの送信前に、当該方法は、ランダムアクセスのための前記PUCCH及び前記PUSCHの利用のため、前記eNBから前記PUCCH及び前記PUSCHのリソースの割当てを受信するステップを有する、請求項1記載の方法。
- 前記リソースの割当ては、前記eNBからのダウンリンク制御チャネルにおいて前記UEにより受信される、請求項5記載の方法。
- コンテンションシーケンスを物理アップリンク制御チャネル(PUCCH)によりeNB(enhanced−Node B)に送信し、
ユーザデータを物理アップリンク共有チャネル(PUSCH)上で前記eNBに送信し、前記PUSCH上でのアップリンクデータ送信に対するリソースの事前のグラントはなく、前記ユーザデータと前記コンテンションシーケンスは、同一のサブフレーム内で同時に送信され、
前記コンテンションシーケンスが前記eNBによって成功裡に受信され、かつ、前記ユーザデータが前記eNBによって成功裡には受信されなかった場合に、アップリンクリソースのグラントに対する手順を実行し、アップリンクリソースのグラントに対する前記手順は、ランダムアクセスチャネル(RACH)手順か、スケジューリングリクエスト(SR)手順のいずれかを有する、
よう構成される物理レイヤ回路を有するユーザ装置(UE)であって、
前記ユーザデータが前記eNBによって成功裡に受信された場合に、アップリンクリソースのグラントに対する手順を実行することを控え、
前記コンテンションシーケンスは、前記eNBにより割り当てられるフォーマットに従って前記PUCCH上で送信され、
前記コンテンションシーケンスは、前記UEによりランダムに選択されるか、又は前記eNBにより割り当てられるかいずれかであり、
前記ユーザデータは、アップリンクリソースに対するリクエストを含んでおらず、
前記eNBが前記PUSCH上で送信された前記ユーザデータを検出することはできないが、前記コンテンションシーケンスを検出することができる場合に、前記UEは、前記RACH手順、又は、前記SR手順のいずれかを実行するように構成されている、
ユーザ装置。 - 前記コンテンションシーケンスは、前記PUCCHにより送信され、前記データは、同一のサブフレーム内で前記PUSCHにより同時に送信され、
前記UEによる前記同一のサブフレーム内の同時送信に対する制限があるとき、固定的なタイムオフセットによって、前記コンテンションシーケンスは、前記PUCCHにより送信され、前記データは、前記PUSCHにより送信される、請求項7記載のユーザ装置。 - 前記PUSCHにより送信されるデータは、ユニキャストリソースグラントのフォーマットに従って送信され、
前記データは、前記eNBが前記PUSCHにより前記データを送信したUEを一意的に特定することを可能にするため、前記eNBにより以前に割り当てられた前記UEに一意的な識別情報(ID)を含む、請求項8記載のユーザ装置。 - 前記eNBが、前記PUSCHにより送信されたデータを検出することができず、前記コンテンションシーケンスを検出することができるとき、
前記eNBは、前記コンテンションシーケンスが前記UEによりランダムに選択されたときには、RACH(Random Access Channel)手順に従うよう構成され、
前記eNBは、前記コンテンションシーケンスが前記UEに割り当てられたときには、スケジューリングリクエスト(SR)手順に従うよう構成される、請求項9記載のユーザ装置。 - 前記コンテンションシーケンスと前記データとの送信前に、当該UEは、ランダムアクセスのための前記PUCCH及び前記PUSCHの利用のため、前記eNBから前記PUCCH及び前記PUSCHのリソースの割当てを受信するよう構成される、請求項7記載のユーザ装置。
- 前記eNBと当該UEとは、3GPP(3rd Generation Partnership Project)のLTE(Long Term Evolution) Advanced規格に従って前記PUCCH及び前記PUSCHを介し通信する、請求項8記載のユーザ装置。
- 前記方法は、さらに、
物理アップリンク制御チャネル(PUCCH)のリファレンス信号部分においてコンテンションシーケンスを送信し、前記PUCCHのデータ部分においてデータを送信するステップを有し、
前記データは、前記PUCCHのデータ部分の1以上のリソースブロック(RB)において送信され、
2つのOFDMシンボルが、前記コンテンションシーケンスの送信のため前記リファレンス信号部分に割り当てられる、請求項1記載の方法。 - 前記コンテンションシーケンスと前記データとは、同一のサブフレーム内で送信され、
前記コンテンションシーケンスは、eNB(enhanced−Node B)により割り当てられるフォーマットに従って送信され、
前記コンテンションシーケンスは、前記UEによりランダムに選択されるか、又は前記eNBにより割り当てられる、請求項13記載の方法。 - 前記PUCCHにより送信されるデータは、前記eNBが前記PUCCHにより前記データを送信したUEを一意的に特定することを可能にするため、前記eNBにより以前に割り当てられた前記UEに一意的な識別情報を有し、
前記PUCCHにより送信されるデータは、前記UEが以降のアップリンクデータ送信のためにアップリンクチャネルリソースを要求していることを示す、請求項14記載の方法。 - 前記UEは、3GPP(3rd Generation Partnership Project)のLTE(Long Term Evolution) Advanced規格に従って前記PUCCH及び前記PUSCHを介し通信する、請求項13記載の方法。
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PCT/US2011/027325 WO2011109796A2 (en) | 2010-03-05 | 2011-03-05 | Contention-based transmission with contention-free feedback for reducing latency in lte advanced networks and enhanced pucch |
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