JP7116094B2 - 無線通信システムにおいてハンドオーバー手順を行う方法及びそのための装置 - Google Patents
無線通信システムにおいてハンドオーバー手順を行う方法及びそのための装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/36—Reselection control by user or terminal equipment
- H04W36/362—Conditional handover
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- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/249—Reselection being triggered by specific parameters according to timing information
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- 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
Claims (8)
- 無線通信システムにおいて端末がハンドオーバー手順を行う方法であって、
複数の候補セルの為のハンドオーバー関連情報を受信する段階;
前記ハンドオーバー関連情報は、非競合任意接続リソース(Random Access Resource)情報を含み、
前記複数の候補セルの1つに対してハンドオーバーが失敗することを決定する段階;及び
前記決定する段階に基づいて、セルを選択するセル選択手順を実行する段階;を含んでなり、
前記複数の候補セル内に含まれる前記選択されたセルに基づいて、前記非競合任意接続リソースを用いて前記選択されたセルへの連結が実行され、
前記複数の候補セル内に含まれない前記選択されたセルに基づいて、無線リソース制御(Radio Resource Control:RRC)連結再設定手順が実行される、方法。 - タイマーT304の期限切れに基づいて、前記複数の候補セルの1つに対して前記ハンドオーバーが失敗されたと決定される、請求項1に記載の方法。
- 前記選択されたセルのRSRP(Reference Signal Received Power)が臨界値以上であることに基づいて、前記選択されたセルに対するタイマーT304を開始する段階;を更に含む、請求項1に記載の方法。
- 前記ハンドオーバー関連情報が受信されたことに基づいて、タイマーを開始する段階;及び
前記タイマーが期限切れになったことに基づいて、前記RRC連結再設定手順を実行する段階;を更に含む、請求項1に記載の方法。 - 無線通信システムにおいて動作する端末(User Equipment:UE)であって、
無線周波数(Radio Frequency:RF)モジュール;及び
プロセッサ;を備えてなり、
前記プロセッサは、RFモジュールと動作可能に結合され、
複数の候補セルの為のハンドオーバー関連情報を受信し、
前記ハンドオーバー関連情報は、非競合任意接続リソース(Random Access Resource)情報を含み、
前記複数の候補セルの1つに対してハンドオーバーが失敗することを決定し;及び
前記決定する段階に基づいて、セルを選択するセル選択手順を実行する;ように構成されてなり、
前記複数の候補セル内に含まれる前記選択されたセルに基づいて、前記非競合任意接続リソースを用いて前記選択されたセルへの連結が実行され、
前記複数の候補セル内に含まれない前記選択されたセルに基づいて、無線リソース制御(Radio Resource Control:RRC)連結再設定手順が実行される、端末。 - タイマーT304の期限切れに基づいて、前記複数の候補セルの1つに対してハンドオーバーが失敗されたと決定する、請求項5に記載の端末。
- 前記プロセッサは、
前記選択されたセルのRSRP(Reference Signal Received Power)が臨界値以上であることに基づいて、前記選択されたセルに対するタイマーT304を開始するように更に構成される、請求項5に記載の端末。 - 前記プロセッサは、
前記ハンドオーバー関連情報が受信されたことに基づいて、タイマーを開始し;及び
前記タイマーが期限切れになったことに基づいて、前記RRC連結再設定手順を実行する;ように更に構成される、請求項5に記載の端末。
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US201762519875P | 2017-06-15 | 2017-06-15 | |
US62/519,875 | 2017-06-15 | ||
PCT/KR2018/006772 WO2018230997A1 (en) | 2017-06-15 | 2018-06-15 | Method for performing a handover procedure in a wireless communication system and a device therefor |
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JP2020524937A JP2020524937A (ja) | 2020-08-20 |
JP2020524937A5 JP2020524937A5 (ja) | 2021-04-30 |
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US (1) | US11350328B2 (ja) |
EP (1) | EP3639560A4 (ja) |
JP (1) | JP7116094B2 (ja) |
CN (1) | CN110999390B (ja) |
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US20170034866A1 (en) | 2014-01-31 | 2017-02-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Method Between Two eNBs to Agree on Radio Resource Configuration for a UE Which Supports Dual Connectivity Between the eNBs |
WO2016153026A1 (ja) | 2015-03-25 | 2016-09-29 | シャープ株式会社 | 端末装置、基地局装置、通信方法および集積回路 |
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JP2020524937A (ja) | 2020-08-20 |
US20210297909A1 (en) | 2021-09-23 |
US11350328B2 (en) | 2022-05-31 |
EP3639560A4 (en) | 2021-02-24 |
CN110999390B (zh) | 2022-11-01 |
WO2018230997A1 (en) | 2018-12-20 |
EP3639560A1 (en) | 2020-04-22 |
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