JP2013530561A - ロングタームエボリューション(lte)通信システムにおいてロバストな順方向ハンドオーバを可能にするための方法および装置 - Google Patents
ロングタームエボリューション(lte)通信システムにおいてロバストな順方向ハンドオーバを可能にするための方法および装置 Download PDFInfo
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Abstract
Description
本出願は、2010年4月9日に出願された「METHOD AND APPARATUS THAT FACILITATES A ROBUST FORWARD HANDOVER FOR LONG TERM EVOLUTION USER EQUIPMENT」と題する米国仮特許出願第61/322,660号、および2010年4月9日に出願された「METHOD AND APPARATUS THAT FACILITATES A ROBUST FORWARD HANDOVER FOR LONG TERM EVOLUTION USER EQUIPMENT USING USER EQUIPMENT IDENTITIES」と題する米国仮特許出願第61/322,782号の米国特許法第119条(e)項に基づく優先権を主張する。これらの出願の各々の内容は、すべての目的のためにそれの内容全体が参照により本明細書に組み込まれる。
同期チャネル(SCH)
共通制御チャネル(CCCH)
共有DL制御チャネル(SDCCH)
マルチキャスト制御チャネル(MCCH)
共有UL割当てチャネル(SUACH)
肯定応答チャネル(ACKCH)
DL物理共有データチャネル(DL−PSDCH)
UL電力制御チャネル(UPCCH)
ページングインジケータチャネル(PICH)
負荷インジケータチャネル(LICH)
UL PHYチャネルは以下を含み得る。
チャネル品質インジケータチャネル(CQICH)
肯定応答チャネル(ACKCH)
アンテナサブセットインジケータチャネル(ASICH)
共有要求チャネル(SREQCH)
UL物理共有データチャネル(UL−PSDCH)
ブロードバンドパイロットチャネル(BPICH)
「例示的」という単語は、本明細書では「例、事例、または例示の働きをすること」を意味するために使用する。「例示的」として本明細書で説明するいかなる態様および/または実施形態も、必ずしも他の態様および/または実施形態よりも好適または有利なものと解釈すべきではない。
AMD 確認型モードデータ
ARQ 自動再送要求
BCCH ブロードキャスト制御チャネル
BCH ブロードキャストチャネル
C− 制御−
CCCH 共通制御チャネル
CCH 制御チャネル
CCTrCH コード化複合トランスポートチャネル
CP サイクリックプレフィックス
CRC 巡回冗長検査
CTCH 共通トラフィックチャネル
DCCH 専用制御チャネル
DCH 専用チャネル
DL ダウンリンク
DSCH ダウンリンク共有チャネル
DTCH 専用トラフィックチャネル
FACH 順方向リンクアクセスチャネル
FDD 周波数分割複信
GERAN GSM無線アクセスネットワーク
L1 レイヤ1(物理レイヤ)
L2 レイヤ2(データリンクレイヤ)
L3 レイヤ3(ネットワークレイヤ)
LI 長さインジケータ
LSB 最下位ビット
MAC 媒体アクセス制御
MBMS マルチメディアブロードキャストマルチキャストサービス
MCCH MBMSポイントツーマルチポイント制御チャネル
MRW 移動受信ウィンドウ
MSB 最上位ビット
MSCH MBMSポイントツーマルチポイントスケジューリングチャネル
MTCH MBMSポイントツーマルチポイントトラフィックチャネル
PCCH ページング制御チャネル
PCH ページングチャネル
PDU プロトコルデータユニット
PHY 物理レイヤ
PhyCH 物理チャネル
RACH ランダムアクセスチャネル
RLC 無線リンク制御
RRC 無線リソース制御
SAP サービスアクセスポイント
SDU サービスデータユニット
SN シーケンス番号
SUFI スーパーフィールド
TCH トラフィックチャネル
TDD 時分割複信
TFI トランスポートフォーマットインジケータ
TM トランスペアレントモード
TMD トランスペアレントモードデータ
TTI 送信時間間隔
U− ユーザ−
UE ユーザ機器
UL アップリンク
UM 非確認応答モード
UMD 非確認応答モードデータ
UMTS Universal Mobile Telecommunications System
UTRA UMTS Terrestrial Radio Access
UTRAN UMTS Terrestrial Radio Access Network
MBSFN マルチキャストブロードキャスト単一周波数ネットワーク(Multicast broadcast over a single frequency network)
MCE MBMS調整エンティティ(coordinating entity)
MCH マルチキャストチャネル(multicast channel)
DL−SCH ダウンリンク共有チャネル(downlink shared channel)
MSCH MBMS制御チャネル
PDCCH 物理ダウンリンク制御チャネル(physical downlink control channel)
PDSCH 物理ダウンリンク共有チャネル(physical downlink shared channel)
MIMOシステムは、データ送信用の複数(NT)個の送信アンテナと複数(NR)個の受信アンテナとを採用する。NT個の送信アンテナとNR個の受信アンテナとによって形成されるMIMOチャネルは、空間チャネルと呼ばれることもあるNS個の独立チャネルに分解され得る。線形受信機が使用される場合の最大空間多重化NSは、min(NT,NR)であり、NS個の独立チャネルの各々は1つの次元に対応する。これは、スペクトル効率のNSの増加を与える。複数の送信アンテナおよび受信アンテナによって生成された追加の次元数が利用された場合、MIMOシステムは改善されたパフォーマンス(たとえば、より高いスループットおよび/またはより大きい信頼性)を与えることができる。空間次元は、ランクに関して記述され得る。
Claims (46)
- 通信システムにおいて順方向ハンドオーバを可能にするための方法であって、
ユーザ端末において、第1のセルの第1の基地局から、前記第1のセルに関連する第1の識別情報を受信することと、
前記ユーザ端末と第2のセルの第2の基地局との間の順方向ハンドオーバを開始することと、
前記第2のセルに関連する第2の識別情報を受信することと、
前記第2の基地局との無線リソース制御(RRC)接続(RRC_Connected)状態を確立することと、
前記RRC接続状態の確立と前記第2の基地局への前記接続の確立の完了との間の無線リンク障害(RLF)を宣言することと、
前記第1の識別情報を使用して第3のセルの第3の基地局との接続を開始することと
を備える、方法。 - 前記第1の識別情報が、前記第1の基地局に関連する物理セル識別(PCI)およびセル無線ネットワーク一時識別子(C−RNTI)と、前記ユーザ端末によって生成された乱数とを備える、請求項1に記載の方法。
- 前記第1の識別情報がSAE一時的モバイル加入者識別(S−TMSI)を備える、請求項1に記載の方法。
- RLFを前記宣言することが、RRCConnectionReconfigurationプロシージャの完了の前に行われる、請求項1に記載の方法。
- 前記第3の基地局が、前記第1の基地局および前記第2の基地局とは異なる基地局である、請求項1に記載の方法。
- 前記第3の基地局と前記第1の基地局とが同じ基地局である、請求項1に記載の方法。
- 前記第3の基地局との前記RRC_Connected状態を確立することと、
前記第3のセルに関連する第2の識別情報を受信することと、
前記第3の基地局とのRRC_Connected状態の確立と前記第3の基地局への前記接続の確立の完了との間の前記第3の基地局に関連する第2のRLFを宣言することと、
前記第1の識別情報を使用して第4のセルの第4の基地局との接続を開始することと
をさらに備える、請求項1に記載の方法。 - 前記第3の基地局とのRRC_Connected状態を前記確立することの間、前記第2の識別情報を無視すること
をさらに備える、請求項7に記載の方法。 - ユーザ端末において、第1のセルの第1の基地局から、前記第1のセルに関連する第1の識別情報を受信することと、
前記ユーザ端末と第2のセルの第2の基地局との間の順方向ハンドオーバを開始することと、
前記第2のセルに関連する第2の識別情報を受信することと、
前記第2の基地局との無線リソース制御(RRC)接続(RRC_Connected)状態を確立することと、
前記RRC接続状態の確立と前記第2の基地局への前記接続の確立の完了との間の無線リンク障害(RLF)を宣言することと、
前記第1の識別情報を使用して第3のセルの第3の基地局との接続を開始することと
を行うための、プロセッサによって実行可能なコードを含むコンピュータ可読媒体を備えるコンピュータプログラム製品。 - 第1のセルの第1の基地局から、前記第1のセルに関連する第1の識別情報を受信するように構成された受信機モジュールと、
第2のセルの第2の基地局との順方向ハンドオーバを開始するように構成された送信機モジュールと、
前記受信機モジュールとともに、前記RRC接続状態の確立と前記第2の基地局への前記接続の確立の完了との間の無線リンク障害(RLF)を宣言するように構成されたプロセッサモジュールと
を備え、
前記送信機モジュールが、RLFの前記宣言後に、前記第1の識別情報と第1のユーザ端末情報とを使用して第3のセルの第3の基地局との接続を開始するようにさらに構成された、
通信デバイス。 - 前記第1の識別情報が、前記第1の基地局に関連する物理セル識別(PCI)およびセル無線ネットワーク一時識別子(C−RNTI)と、前記ユーザ端末によって生成された乱数とを備える、請求項10に記載の通信デバイス。
- 前記第1の識別情報が、SAE一時的モバイル加入者識別(S−TMSI)を備える、請求項10に記載の通信デバイス。
- RLFを前記宣言することが、RRCConnectionReconfigurationプロシージャの完了の前に行われる、請求項10に記載の通信デバイス。
- ユーザ端末において、第1のセルの第1の基地局から、前記第1のセルに関連する第1の識別情報を受信するための手段と、
前記ユーザ端末と第2のセルの第2の基地局との間の順方向ハンドオーバを開始するための手段と、
前記第2のセルに関連する第2の識別情報を受信するための手段と、
前記第2の基地局との無線リソース制御(RRC)接続(RRC_Connected)状態を確立するための手段と、
前記RRC接続状態の確立と前記第2の基地局への前記接続の確立の完了との間の無線リンク障害(RLF)を宣言するための手段と、
前記第1の識別情報を使用して第3のセルの第3の基地局との接続を開始するための手段と
を備える、通信デバイス。 - 通信システムにおいて順方向ハンドオーバを可能にするための方法であって、
ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信することと、
前記ユーザ端末に第2の識別情報を送ることと、
前記ユーザ端末から新しい再確立要求を受信することと、
前記ユーザ端末に第3の識別情報を送ることと、
前記ユーザコンテキスト情報を前記第3の識別情報に関連付けることと
を備える、方法。 - 前記第1の識別情報が、前記第1の基地局に関連する物理セル識別(PCI)およびセル無線ネットワーク一時識別子(C−RNTI)と、前記ユーザ端末によって生成された乱数とを備える、請求項15に記載の方法。
- 前記第1の識別情報がSAE一時的モバイル加入者識別(S−TMSI)を備える、請求項15に記載の方法。
- 前記第2の識別情報が、前記第2の基地局によって生成された第1のC−RNTIを備える、請求項15に記載の方法。
- 前記第3の識別情報が、前記第2の基地局によって生成された第2のC−RNTIを備える、請求項18に記載の方法。
- 前記ソース基地局から前記ユーザ端末コンテキスト情報を検索することをさらに備える、請求項15に記載の方法。
- RRCConnectionReestablishmentメッセージを送ることをさらに備え、前記RRCConnectionReestablishmentメッセージの受信の前にRLFが生じる、請求項15に記載の方法。
- ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信することと、
前記ユーザ端末に第2の識別情報を送ることと、
前記ユーザ端末におけるRLFの宣言後に、前記ユーザ端末から前記第1の識別情報を受信することと、
前記ユーザ端末に第3の識別情報を送ることと、
前記ユーザコンテキスト情報を前記第3の識別情報に関連付けることと
を行うための、プロセッサによって実行可能なコードを含むコンピュータ可読媒体を備えるコンピュータプログラム製品。 - ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信するように構成された受信機モジュールと、
前記ユーザ端末に第2の識別情報を送るように構成された送信機モジュールであって、前記受信機モジュールが、前記ユーザ端末におけるRLFの宣言後に、前記ユーザ端末から前記第2の識別情報を受信するようにさらに構成され、前記送信機モジュールが、前記ユーザ端末に第3の識別情報を送るようにさらに構成された、送信機モジュールと、
前記ユーザコンテキスト情報を前記第3の識別情報に関連付けるように構成されたプロセッサモジュールと
を備える、通信デバイス。 - 前記第1の識別情報が、前記第1の基地局に関連する物理セル識別(PCI)およびセル無線ネットワーク一時識別子(C−RNTI)と、前記ユーザ端末によって生成された乱数とを備える、請求項23に記載の通信デバイス。
- 前記第1の識別情報が、SAE一時的モバイル加入者識別(S−TMSI)を備える、請求項23に記載の通信デバイス。
- 前記第2の識別情報が、前記第2の基地局によって生成された第1のC−RNTIを備える、請求項23に記載の通信デバイス。
- 前記第3の識別情報が、前記第2の基地局によって生成された第2のC−RNTIを備える、請求項26に記載の通信デバイス。
- 前記ソース基地局から前記ユーザ端末コンテキスト情報を検索するように構成されたバックホールインターフェースモジュールをさらに備える、請求項24に記載の通信デバイス。
- 前記送信機モジュールが、RRCConnectionReestablishmentメッセージを送るようにさらに構成され、前記RLFが、前記RRCConnectionReestablishmentメッセージの受信の前に生じる、請求項23に記載の通信デバイス。
- ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信するための手段と、
前記ユーザ端末に第2の識別情報を送るための手段と、
前記ユーザ端末におけるRLFの宣言後に、前記ユーザ端末から前記第1の識別情報を受信するための手段と、
前記ユーザ端末に第3の識別情報を送るための手段と、
前記ユーザコンテキスト情報を前記第3の識別情報に関連付けるための手段と
を備える、通信デバイス。 - 通信システムにおいて順方向ハンドオーバを可能にするための方法であって、
ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信することと、
前記ソース基地局からの前記ユーザコンテキストの検索を開始することと、
前記ユーザコンテキストの検索に失敗したことに応答して、前記ユーザ端末にコンテキスト検索失敗メッセージを送ることと、
前記ユーザ端末から接続要求メッセージを受信することと
を備える、方法。 - 前記接続要求メッセージの受信後に、前記ユーザ端末に接続セットアップメッセージを送ることをさらに備える、請求項31に記載の方法。
- 前記接続セットアップメッセージがRRCConnectionSetupメッセージである、請求項32に記載の方法。
- 前記接続要求メッセージがRRCConnectionRequestメッセージであり、前記ユーザ端末からの前のランダムアクセスチャネル(RACH)プロシージャシグナリングの受信なしに、前記接続要求メッセージが受信される、請求項31に記載の方法。
- ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信することと、
前記ソース基地局からの前記ユーザコンテキストの検索を開始することと、
前記ユーザコンテキストの検索に失敗したことに応答して、前記ユーザ端末にコンテキスト検索失敗メッセージを送ることと、
前記ユーザ端末から接続要求メッセージを受信することと
を行うための、プロセッサによって実行可能なコードを含むコンピュータ可読媒体を備えるコンピュータプログラム製品。 - ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信するように構成された受信機モジュールと、
前記ソース基地局からの前記ユーザコンテキストの検索を開始するように構成されたプロセッサモジュールと、
前記ユーザコンテキストの検索に失敗したことに応答して、前記ユーザ端末にコンテキスト検索失敗メッセージを送るように構成された送信機モジュールであって、前記受信機モジュールが、前記ユーザ端末から接続要求メッセージを受信するようにさらに構成される、送信機モジュールと
を備える、通信デバイス。 - 前記送信機モジュールが、前記接続要求メッセージの受信後に、前記ユーザ端末に接続セットアップメッセージを送るようにさらに構成された、請求項36に記載の通信デバイス。
- 前記接続セットアップメッセージが、RRCConnectionSetupメッセージである、請求項36に記載の通信デバイス。
- 前記接続要求メッセージがRCConnectionRequestメッセージであり、前記ユーザ端末からの前のランダムアクセスチャネル(RACH)プロシージャシグナリングの受信なしに、前記接続要求メッセージが前記受信機モジュールにおいて受信される、請求項36に記載の通信デバイス。
- ターゲット基地局において、ユーザ端末から、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を受信するための手段と、
前記ソース基地局からのユーザコンテキストの検索を開始するための手段と、
前記ユーザコンテキストの検索に失敗したことに応答して、前記ユーザ端末にコンテキスト検索失敗メッセージを送るための手段と、
前記ユーザ端末から接続要求メッセージを受信するための手段と
を備える、通信デバイス。 - 通信システムにおいて順方向ハンドオーバを可能にするための方法であって、
ユーザ端末からターゲット基地局に、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を送ることと、
前記ターゲット基地局からコンテキスト検索失敗メッセージを受信することと、
前記コンテキスト検索失敗メッセージの受信後に、前記ターゲット基地局とのRACHプロシージャを実行することなしに、前記ターゲット基地局に接続要求メッセージを送ることと
を備える、方法。 - 前記接続要求メッセージがRRCConnectionRequestメッセージである、請求項41に記載の方法。
- 前記ターゲット基地局から接続セットアップメッセージを受信することをさらに備える、請求項41に記載の方法。
- ユーザ端末からターゲット基地局に、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を送ることと、
前記ターゲット基地局からコンテキスト検索失敗メッセージを受信することと、
前記コンテキスト検索失敗メッセージの受信後に、前記ターゲット基地局とのRACHプロシージャを実行することなしに、前記ターゲット基地局に接続要求メッセージを送ること
を行うための、プロセッサによって実行可能なコードを含むコンピュータ可読媒体を備えるコンピュータプログラム製品。 - ユーザ端末からターゲット基地局に、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を送るように構成された送信機モジュールと、
前記ターゲット基地局からコンテキスト検索失敗メッセージを受信するように構成された受信機モジュールであって、前記送信機モジュールが、前記検索失敗メッセージの受信後に、前記ターゲット基地局とのRACHプロシージャを実行することなしに、前記ターゲット基地局に接続要求メッセージを送るようにさらに構成された、受信機モジュールと
を備える、通信デバイス。 - ユーザ端末からターゲット基地局に、ソース基地局に記憶されたユーザコンテキスト情報の検索のための情報を含む第1の識別情報を送信するための手段と、
前記ターゲット基地局からコンテキスト検索失敗メッセージを受信するための手段と、
前記コンテキスト検索失敗メッセージの受信後に、前記ターゲット基地局とのRACHプロシージャを実行することなしに、前記ターゲット基地局に接続要求メッセージを送るための手段と
を備える、通信デバイス。
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CN102823295A (zh) | 2012-12-12 |
EP2556700A2 (en) | 2013-02-13 |
US9131410B2 (en) | 2015-09-08 |
US20120327908A1 (en) | 2012-12-27 |
US8615241B2 (en) | 2013-12-24 |
KR101444445B1 (ko) | 2014-09-26 |
WO2011127444A3 (en) | 2012-01-05 |
US20110250892A1 (en) | 2011-10-13 |
WO2011127444A2 (en) | 2011-10-13 |
KR20140062176A (ko) | 2014-05-22 |
EP2637444A2 (en) | 2013-09-11 |
CN102823295B (zh) | 2017-05-03 |
EP2637444A3 (en) | 2014-08-27 |
EP2556700B1 (en) | 2015-10-21 |
EP2637444B1 (en) | 2018-08-22 |
KR20130009839A (ko) | 2013-01-23 |
JP6208282B2 (ja) | 2017-10-04 |
JP2014168243A (ja) | 2014-09-11 |
KR101464581B1 (ko) | 2014-11-24 |
JP5792281B2 (ja) | 2015-10-07 |
JP2016167840A (ja) | 2016-09-15 |
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