TWI335738B - Wireless transmit/receive unit - Google Patents
Wireless transmit/receive unit Download PDFInfo
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- TWI335738B TWI335738B TW095140105A TW95140105A TWI335738B TW I335738 B TWI335738 B TW I335738B TW 095140105 A TW095140105 A TW 095140105A TW 95140105 A TW95140105 A TW 95140105A TW I335738 B TWI335738 B TW I335738B
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- wtru
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- rti
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- 230000005540 biological transmission Effects 0.000 claims description 51
- 238000005259 measurement Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 4
- 238000013468 resource allocation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 22
- 230000006978 adaptation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013442 quality metrics Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001149 cognitive effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/26—Monitoring; Testing of receivers using historical data, averaging values or statistics
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/373—Predicting channel quality or other radio frequency [RF] parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/223—TPC being performed according to specific parameters taking into account previous information or commands predicting future states of the transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/228—TPC being performed according to specific parameters taking into account previous information or commands using past power values or information
Description
1335738 . 1 « 九、發明說明: 【發明所屬之技術領域】 被無=====狀,侧係為 【先前技術】
。。夕4 ^, 本無線通料、_來估計無線接收 為之頻道—。例如,這些演算係被於使㈣三代 計劃(3GPP)高;速率分時雙卫(TDD)模式,第三 劃低晶片鱗分賴m代猶計齡雜工㈣ 模式’分時_同步分碼多重存取(TD_SCDMA)縣,及上述系 統之高速下連封包存取(HSDPA)延伸。品·計可被用於傳 輸功率控制’同步化決定之進出,無線鏈路失敗決定,及支 援動態鏈路調適(如可適調變及編碼(AMC))之頻道品質指標 (CQIs)技術。 ' θ $ —例如分時雙J1赋巾’被朗者設備_)傳輸於高速共 旱資源頻道(HS-SICH)上之俗稱卿之頻道品質指標係為建 議傳輸格式資源組合(TFRC)。通常,推薦傳輸格式資源組合 涉及傳輸塊可能尺寸,調變方案及任何其他可用鏈路調適參 數。建5義傳輸格式資源組合通常被建立在被使用者設備最新 接收之訊號基礎上。 無論通信系統是否為第三代夥伴計劃系統,頻道品質指 標代表建議傳輸塊尺寸,調變格式,碼數,功率偏移或任一 若干不同類型鏈路調適參數。這些頻道品質指標係被接收器 導出且被發送訊號至發送器以設定接續傳輸之傳輸參數。 5 1335738 • 頻道品質指標通常提供妒用於可適調變及編碼功能之 建議編碼及調變方案之特定鏈路調適資訊,或提供一個或更 多被隨後用來建立適當傳輸訊號選擇之一般品質指標。 若頻道品質指標不正確,被選擇調變及編碼方案(或其他 傳輸參數)將為次佳。當接收品質太差而不能證實其是否可繼 績使用時,高估頻道品質可使使用者設備及節點七連續嘗試 • 使用調變及編碼方案。頻道品質低估可導致超額傳輸功率及 Φ 無效使用無線資源,或同步處理入及出例子中,最後是無線 鏈路失敗之預先宣告及釋出無線資源。因此,呼叫被無原因 地斷絕。因為其他胞元中之干擾會不必要地增加,所以超額 傳輸功率依序導致系統位準輸通量損失。於是,不正確頻道 。。質估計會降低輸通量,浪費傳輸功率及增加對其他胞元之 干擾。 先前技術頻道估計技術之缺點係因該技術估計接收器 處之頻道品質,所以其無法充分提供接續傳輸時之發送器處 • 之頻道品質正確估計。參考第1圖,使用者設備及節點-B間之 先前技術頻道品質指標產生及報告程序1〇〇係被顯示。節點七 傳輸訊息於下連(DL)控制頻道(步驟1〇2),通知使用者設備其 資源已被分配至使用者設備以便下一個相關下連資料傳輸。 使用者設備可接收有關資源分配之控制資訊並等待下連資料 傳輸之接收(步驟104)。 “節點-B可傳輸相關下連資料傳輸(步驟1〇6)。使用者設備 吻取下連資料傳輸(步驟1〇8)及選擇性品質量測(步驟11〇)。使 =來自步驟110之量測,使用者設備導妹計可提供最雜通 1知頻道rnj質指標,而仍可滿足如塊錯誤率(BLER)之其他可 6 1335738 能特定量測。 使用者設備接著可報告最新被導出之頻道 下固可用上連控制頻道中之節點-B(步驟1M)。節畔^至 =崎品質指標(步驟ii6)且接著使用該頻道品 疋個身料傳輸之傳輸參數(步驟118)。 °又 規行頻道品細細授之絲係具有缺點。例如, -代夥伴㈣說明書並不設定制者設 =被導出頻道品質指標之特定時間限制。此可耗= ===出’則其被報告於下-個可用上連控制 取小化可^至節㈣之頻道品f指標f訊之延遲。 =獲^伽者設備至節㈣之舰品_標f敗 被取小化,延遲並不會被消除。 如第2圖之時序_所示’―個或更多下連傳輸且有使 用者設備可獅性制下連傳輪之舰品f 如圖,可制下較㈣道,下連引導舰,或下連=及 弓丨導頻道之組合。量曝,頻道品質指標係被計算;此被續 不於時間tl。雖然延遲係藉由報告頻道品質指標至下一個可 用上連傳輸處之節點_B(被顯示於時剛2)被最小化,但仍有額 外延遲直到被頻道品質指標之節㈣(被顯示於時陶隨後 用來設定下一個下連資料傳輸之參數為止。 、頻道品質指標被建立基礎之量測完成(時間11)間之延遲 (破圖示為A)及到被節點顿後用來設定時間t3處之相關傳輸 參數係產生被節點·Β使㈣之錯誤頻道品f指標。當頻道品 質指標變得較不正確時,因為傳輪參數被建立在不正確反應 7 1335738 真貫頻道情況之頻道品質指標基礎上,所以最終下連頻道品 質將受損。本質上,先前技術頻道品質指標決定方法係可反 應過去的頻道狀況。 預期將提供無已知先前技術系統缺點之頻道品質決定 方法。 【發明内容】
本發明提供運用鏈路調適技術來改善通信系統之頻道 品質預測效能之方法。接收器可選擇性量測下連傳輸並接著 儲存一個或更多量測或從其產生之頻道品質指標。接收器接 著可檢索一個或更多過去量測(或過去頻道品質估計本身), 並將其與最新制(或最_妓質料)結合,以預測何頻 道。。貝將於某未來時點來導出預測性指標品質指標(CQI)。此 被導自最新頻道估計及至少—過去頻道估計之預測性指授品 質指標係接著被傳送至發送器用來更新傳輸參數。 【實施方式】
本發明提供 頻道品獅軸嘛吻之 使用二此=1傳單動不受限 可操作於無線環境中之其他類J二=叫器或任何 使用。此後被稱為節點_B者,、U在此可被交換 -B,位址控制器,存取點或 =不x限基地台,節點 些項在此可被錄伽。之其他接錄置。這 分頻雙工,分時-同步 應注意本發明可應用至分時雙工,
S 8 1335738 分碼多重存取’分碼多重存取2_,及其他無例外傳輸模式 及類型。更普遍是,本發明可應用至任何運用可監控頻道品 質及調適頻道品質為基礎之接續傳輸之傳輸參數之方案之任 何通信系統,如可適調變及編碼或其他型式無線鏈路調適。 依據本發明’舰品餘標絲麵道情況品質之預測 指標。節點·Β或無線傳輸/接收單元均可執行該預測,此後本 發明將被制執行城_輸/魏單元。糾,軸本發明 將被說明接收器執行量測及導出頻道品f指標,但接收^仍 均ί地執行量測及傳輸該量啦接著導出頻道品質指標之發 送器。熟練技術人士亦應了解本發明亦可均等_用至上丄 或下連傳輸乂如场中之鏈_義子,此後魏明之無線 傳輸/接收單元及節點七之角色將相反。 所繪系統中,傳輪從發可跨越若干時間槽,這些時間样 中之干擾位準可劇烈變化。本發明認知頻 ^ 對槽實際改變。藉由促成㈣需要)縣虹 = 郝土以與先前技術情況她,被 報告至發运裔之頻道品質因此可更精確。 參考第3圖,依據本發明產生及報告頻道品質指標 序200係被顯示。程序2〇〇你姑y ·ρ'、 之下、車㈣w序0係被即點_B啟動傳輸有關資源分配 接ίίϋΐ無線傳輸/接收單^(步驟逝)。無線傳輸/ 接,早兀可接收有關下連控趣道上之資源分配之下連控制 «步驟204)。她息通知_ 傳輸之傳輪參數(如_ 械接績貝枓 元。節點-Β技〜#、., 、扁馬專)給無線傳輸/接收單 驟2〇6),連㈣傳輸至無線傳輸/接收單元(步 ”破…線傳輸/接收單元接收(步驟綱)。無線傳輸/
9 C 1335738 接收單元可做有關下連資料傳·輸之選擇性量義道品質指极 (步驟21〇) ’導出最新頻道品質指標(步驟犯),接著決定預 性頻道品質指標。如步驟214部分,無線傳輸/接收單元可儲 存稍後用於決定預測性頻道品質指標之-個或更多頻道品質 指標量測及/或頻道品質指標。另外,應了解不需導出最新頻 道品質指標以決定預測性頻道品質指標。因此,步驟212可被 視為此實關巾之選項。例如,過去頻道品f指標量測可盘 最新頻道品質指標量測結合來導出預測性頻道品質指標/、 預測性頻道品質指標係從最新量測及至少一過去量测 被導出。無線傳輸/接收單元可檢索—個或更多過去頻道品質 指標量測(或過去親品質擁本身),並將其與最新頻道品 質指標量測(或最新頻道品質指標)結合,以預測未來頻^ 況品質。 本發明-實施例中,被用於步驟214中導出預測性頻道 品質指標之_方法係為線性侧方法。此為結合最新及過 去資訊為基礎·未來值之已域值技術。線性預測方法可 最小化最小平方思考巾之預測誤差。較佳實施例巾,以分貝 _表示之訊號干擾比(SIR)係為被預測量。然而,其他因子 亦可被包含’如分別為Ά號功率及雜訊功率之雅彳。其他預 測方法可被使用且可被心中選擇效能及最簡化。/' 預測性頻道品質指標被導出於步驟214後, 收單元將雕紐品賤魏告至節㈣(細加)',且 節點-B於步驟2邮接收預测性頻道品質指標。節點_b接著使 用預測性頻道品質指標來設定下一個傳輸之傳輸參數(步驟 熟練技術人士應了解_麵可觀方法特定實施而 被結合。例如,如第4圖之本發明方法·之替代實施綱示, 步驟21〇 ’ 2】2及214可被結合為單一步驟顿以決定預測性頻 遺品質指標。第4圖中之所有其他步驟係相同於 說 明之步驟。 另外,如第5圖所示,步驟202及2〇4不必 份’藉此線傳輸/接收單元可不需先前下連控制訊息而自動 接收下連資料傳輸。 —疋否决定頻道σ α貝& “之特定處理係被說明於如第3圖 户斤示之各步驟別损或第4圖所示之單—步驟,赠技術 去情況之先前技術頻 ^貝从決定方法’本發明鱗出可到通信頻道未來情 生頻道品質指標。本發明可做最新量測,但向節點 ,,報告可估計未來頻道情況之預測性頻道品質指標。 性頻道品質指標係被導出自最_道品質指 最新頻道品質指標及至少—過去頻道品 性』;曾=導出自之過去頻道品質指標。預測 H。。^ w可估計較接近節點娜備傳輸時點之頻道情 況口口貝0 道°°質指標被顯不僅從單資料頻道被導出,使用 —個資料傳輸(步驟2G6),任何可用引導訊 號,或、·5兩者來導出頻道品質指標。 依據本發簡佳絲·,_性舰#指標較 送另一傳輸所經歷之實際頻道情況,而非 弟及—圖所不之反應過去傳輪之頻道品質指標量測。 1335738 參考第6圖,雖然無線傳輸/接收單元於相同於先前技術 ’ ^之時點(時間t])做頻道品質指標量測,接著將其與先前頻 貝指標量測結合於先前技術方案之時點(時間七)傳輸至 節點-B,依據本發明之無線傳輸/接收單元可預測時間t3處為 何頻道情況。第6圖所示例中’因為頻道品質指標被預測及時 與下連資料頻道排列,所以,,明顯,,頻道品質指標延遲會消 & °於是’因為被傳送之制性舰品質指標為被預測於時 間t3之頻道品質指標,所以當節點娜備傳輸下連資料時(時 • 間〖3) ’並無延遲(被顯示為B=〇)。 即使頻道品質指標量測完成(時間t 〇及節點_B使用量测 之間具有延遲’但此延遲仍短於第2圖所示之延遲。藉由使用 頻道品質歧有關之可用過去資訊,被報告之頻道^質指標 係可,計算以反應存在於下—個下連㈣傳輸時間之頻道品 質,藉此使被選擇碼速率’ __及其他鏈賴適參 精確。 、雖然第6圖顯示頻道品質指標量測被執行於下連資料頻 參 道及下連引導頻道’但熟練技術人士應了解頻道品質指標量 測僅可被執行於下連資料親,下連引物道,或被執行於 下連資料及引導頻道之組合。 、 雖然預測性頻道品質指標中亦有相關誤差(因為其被預 測且不實際)’此誤差可削、於絲技術傳送過去頻道品質指 標量測之方法。第7圖顯示如何使用依據本發明被使用之預測 方案係㈣用來改善實際傳輸時點處之頻道品質情況報告精 確度,措此改善任何動態鍵路調適系統之優先。第7圖中,被 量測訊號干擾比及該訊號干擾比被使用時點處之訊號干擾比 1335738 • · 之間差異係被顯示。此例中,該延遲係為1〇毫秒。 有兩個可能分佈曲線被顯示。一個被描繪如曲線A之以 過去頻迢情況為基礎之傳送頻道品質指標量測先前技術方 法,及被描繪如曲線B之以未來頻道情況為基礎之傳送預測 性頻道品質指標量測之最新方法。與先前技術方法之曲線a 相較’有了本㈣(鱗B),雜冑可能性相驗差會較小,
有較低可祕相_縣會鼓。與錄技蚊延遲訊號相 較’依據本發明之預測訊號分佈更集中接近零誤差,使用預 測性頻道品質指標時可指出頻道品質指標報告誤差係較小。 雖然本發明已詳細說明,但應了解本發明並不限於此, 只要不背_”請專魏圍所狀林發明料,均 各種改變。 【圖式簡單說明】 第1圖為依據先前技術之頻道品質指標產生及報告方法流程
第2圖為顯示與第1圖之先前技術頻道品質指標報告方法相關 之延遲之時序圖。 質指標產生 第3圖為依據本發明較佳實施例之預測性指標品 及報告方法。 ^圖為依據本發明第-顿實施例之_触標 產生及報告方法。 μ仿細 Γ生圖及本f明第二替代實施例之預測性指標品質指標 第圖為’姑與第二及四圖之本發明實施例相關之内存延遲
13 S 1335738 消除之時序圖。 第7圖為顯示依據先前技術之頻道品質指標產生及報告處理 及依據本發明之預測性指標品f指標產生及報告處理間之差 【主要元件符號說明】 3GPP 第三代夥伴計劃 AMC 可適調變及編碼
CDMA 分碼多重存取 CQI 頻道品質指標 DL 下連 FDD 分頻雙工 HSDPA 高速下連封包存取 HS-DPCCH分頻雙工之共享資訊頻道 HS-SICH分時雙工之高速共享資源頻道 SIR 訊號干擾比
TDD 分時雙工 m 使用者設備
TFRC TD-SCDMA分時-同步分碼多重存取 傳輸格式資源組合 UL上連 14
Claims (1)
1335738
十、申請專利顧:I!!!,日修正本 1_-種用以提供有關-下連頻道的品f之回授的無線傳輪/接收單 元(WTRU),該WTRU包含: -接收器,其触置以接收來自一基地台的—控制通信及— 下連通信,該控制通信包含有關—接續下連通信中所提供的資源 分配之資訊; '' -處理ϋ ’其係配置以執行該下連通信上的複數選擇頻道品 籲質指標(CQI)量測’以判定該下連頻道目前的品質並決定一預測 CQI ’該預測CQI係依循時間槽估計該下連通信❺未來品質;以及 一傳輸器,其係配置以傳輪該預測CQI至該基地台,其中該 基地台利用該預測CQI來設定一未來傳輸的傳輸參數。 2.如申請專利範圍第丨項所述的WTRU,進一步包含一記憶體,其 中該WTRU儲存該複數選擇(:(31量測的至少其中之一。 3·如申請專利範圍第2項所述的WTRU,其中該處理器係配置以 • 導出一目前CQ1,並儲存該目前CQI於該記憶體中。 4. 如申請專利範圍第3項所述的WTRU,其中該處理器係配置以 檢索該複數CQI量測的至少其中之一,並且將其與該目前匸切 組合’以預測該下連頻道未來狀態的品質。 5. 如申請專利範圍第1項所述的WTRU,其中該處理器係配置以 使用一線性預測演算來判定該預測CQI。 6·如申請專利範圍第1項所述的WTRU,其中該下連通信包含至 少一資料通信。 15 ’其中該下連通信包含至 如申”專彻請第1項所述的WTRU 少一引導通信。 8·如申請專利範圍第1項所述的WTRU,其中該下連頻道包含複 數下連頻道,於該複數下連頻道上執行該複數CQI量測。 9.=申請專利範圍第8項所述的醫如,其愧複數下連頻道包 ^至少—資料頻道’其中於至少—資料頻道上執行該複數卿 10·如申料鄕圍第g項所述研·,其找魏下連頻道包 含至少-引導頻道,其中於至少一引導頻道上執行該複數卿 量測0 11.如申請專利範圍第8項所述的^^^,其中該複數下連頻道包 含至少-引導頻道及至少—f料頻道,而於其上執行該複數 CQI量測。 12·—種用以提供有關一通信頻道的品質之回授的無線傳輸/接收 單元(WTRU),該WTRU包含: 一接收态,其係配置以接收來自一基地台的一接續下連通信 中有關提供至該WTRU的資源分配之下連控制訊息及一接續下連 資料傳輸,其中該下連控制訊息於一下連控制頻道上接收,且告 知該WTRU該接續資料傳輸的時程;以及 一處理器’其係配置以量測有關該下連資料傳輸的複數選擇 頻道品質指標(CQI)量測’並決定用以預測未來頻道狀態品質的_ 1335738 • 預測CQI。 13·如申請專利範圍第12項所述的WTRU ’進一步包含一記憶體, 其中該WTRU儲存該複數選擇CQI量測的至少其中之一。 14. 如申請專利範圍第13項所述的WTRU ’其中該處理器係配置以 導出一目前CQI,並儲存該目前CQI於該記憶體中。 15. 如申請專利範圍第Μ項所述的WTRU,其中該處理器係配置以 檢索該複數CQI量測的至少其中之一,並且將其與該目前CQIk • 合,以預測未來頻道狀態品質。 16. 如申請專利範園第12項所述的WTRU,其中該處理器係配置以 使用一線性預測演算來判定該預測CQI。
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CN1709001B (zh) | 2010-04-14 |
AU2003287399A1 (en) | 2004-06-07 |
WO2004042982A2 (en) | 2004-05-21 |
US8280428B2 (en) | 2012-10-02 |
TW200513923A (en) | 2005-04-16 |
EP1557057A4 (en) | 2006-12-13 |
JP2009124738A (ja) | 2009-06-04 |
JP2006505221A (ja) | 2006-02-09 |
NO20052411L (no) | 2005-05-13 |
TWI245523B (en) | 2005-12-11 |
US20110223957A1 (en) | 2011-09-15 |
US20040142698A1 (en) | 2004-07-22 |
KR100988535B1 (ko) | 2010-10-20 |
AU2003287399A8 (en) | 2004-06-07 |
TW200420062A (en) | 2004-10-01 |
TW200735566A (en) | 2007-09-16 |
KR20050098971A (ko) | 2005-10-12 |
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