TWM272315U - Apparatus for processing data blocks during soft handover - Google Patents

Apparatus for processing data blocks during soft handover Download PDF

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Publication number
TWM272315U
TWM272315U TW093217511U TW93217511U TWM272315U TW M272315 U TWM272315 U TW M272315U TW 093217511 U TW093217511 U TW 093217511U TW 93217511 U TW93217511 U TW 93217511U TW M272315 U TWM272315 U TW M272315U
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Taiwan
Prior art keywords
network controller
wireless network
node
data block
copy
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TW093217511U
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English (en)
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Guo-Dong Zhang
Stephen E Terry
Stephen G Dick
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Interdigital Tech Corp
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Publication of TWM272315U publication Critical patent/TWM272315U/zh

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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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2612—Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Description

M272315 八、新型說明： 創作領域 本創作係有關無線通信領域。更特別是，本創作係有關處理如分頻雙工⑽D) 或分時雙工(TDD)之多胞元無線通信系統中之資料區塊。 背景 改善上鏈涵蓋，產出及傳輸延遲之方法目前被檢視於發行咖)通用行動電 信系統(UMTS)研究項目”分頻雙工上鏈加強，，脈絡中之第三代夥伴計劃⑶pp)中。 為了達成這些目標，廣泛預細節點(基地台）將承擔排程及分配上鍵資源 (實際頻道)至個者之責任。該原理麟使無線網路控繼保雜略控制，_ 點亦可以_基礎較無_路㈣賭更纽決定騎理上鏈鱗資源。類似 方法已於通用行動電信系統分頻雙工⑽D)及分時雙工⑽)模式中之發行5㈤ 高速下鏈封包存取(HSDPA)中被採用。 亦a又想右干獨立上鏈被處理於之共用時間區段内之無線傳輸/接收單元 (WTRU)及通用陸上存取網路⑽之間。此之一例為媒體存取控制㈣麻 合自動重複要求(HARQ)或僅媒體存取控制層自動重複要求(_操作，其中各傳 輸可月⑽不同傳輸數被通難上存取網路成功接收。為了限觸系統架構之影 曰係職媒體存取控制上之協定層不應被加強上鍵專用頻道⑽—⑽)之引進 所衫響。被此引進之-需求係為傳遞至無線鍵路控制(RLC)協定層之仔列中資 料因此’類似下鏈中之南速下鏈封包存取操作，係需通用陸上存取網路再排 序功能依據無線傳輸/接收單元無線鏈路控制實體所產生之符列來組織被接收 資料塊。 I人又接巨觀》集操作係需集中控制主動組内各胞元中之上鏈傳輸。主動組 M272315 可能包含複數B節點。再傳輸係被產生直収少_ β節點實現成功傳輸為止。 成功傳輸並不被所有B節點保證。因此，因為任何—β_内可能不能取得成 功傳輸完成組’所以再排序成功傳輸無法完成。 内容 本創作係有關軟交接期間處理資料區塊裝置。該裝置可為無線通信系統， 無線網路㈣戰NC)或髓電路⑽。無線通㈣統包含至少兩加社鍵軟交 接B節點及-無線網路控。各B節點可解碼被接收資料區塊並轉送具有解 吉果’也就是職誠㈣)之雜解料轉絲轉控制器 若無線網路控制器接收被成功解碼資料區塊之至少_複本，則無線網路控制器 可使用再排序魏實體成功處理被觸資籠塊來提供例巾傳遞至較高協定 層:右無線網路控制器接收—以上複本之被成功解碼資料區塊，則無線網路控 制卯拋棄額外被成雜碼㈣區塊複本。麟鱗控制將趣務無線網路控 制器（S.C)或控制無_路控制账国。節點包含可處理加強上鍵專 用頻道功能之媒體存取控制實體。 圊示簡單說明 了攸以下較佳實施例說明及附圖更詳細理解本創作，其中·· 第1圖為依據本創作較佳實施例處理服務無線網路控_中之資料區塊之 無線通信系統方塊圖； 第2圖為包含處理第1圖系統中資料區塊之方法步驟之處理流程圖； 第3圖為依據本創作替代實施例處理控制無線網路控制器中之資料區塊之 無線通信系統方塊圖；及 第4圖為包含處理第3圖系統中資料區塊之方法步驟之處理流程圖。 M272315 較佳實施例之詳細說明 本創作將參考關說明，其巾全文之她數字係代表相似元件。 此後，”無線傳輸/接收單元”-詞係包含但不受限於使用者設細），行動 台，固定或行動用戶單元，呼叫器或可運作於無線環境中之任何其他類型裝置。 此後被稱為’，基地台，，-詞係包含但不受限於B節點，位址控·，存取點或無線 環境中之其他類型接介裝置。 如-般被顧至顧行動電⑽統，⑽删G(分碼多重存取漏)及分碼 多重存取者，本_可進-步顧至分時紅，分頻紅及分喃步分碼多重 存取(TD SCDMA) ’但亦可设想應用至其他無線系統。針對c臓咖，本創作可 被實施於EV-DO(也就是僅有資料)及EV_DV(也就是資料及語音）。 軟交接操作_，較高層轉於加社鏈胞元之絲子集，對此加強上鍵 專用頻道係被維持於軟交接巨觀分集狀態中。這些主動子集中之胞元係被不同 加強上鏈軟交接B節點控制。 第1圖，颂示包含依據本創作較佳實施例操作之一服務無線網路控制器㈣ 及至少兩⑵加強上鏈軟交接B節點11G(Ui11GN)之無線通信系統議。無 娜有無权又接’各無線傳輸/接收單元均具有一或更多再排序功能實體被實 方優服矛力無線網路控制II 1Q5。處理加強上鏈專關道功能之混合自動重複要求 或自動重複要求處理係被放置於各加強上鏈軟交接B節點 110内之媒體存取控 制實體120中。各再排序功能實體115可與服絲線網路控制器1〇5内之較高 協疋層125通信且包含一相關資料緩衝器（無圖示）。 第2圖為軟交接期間包含處理系統剛中資料區塊，也就是封包資料單元 (PDUs)之方法步驟之處理2〇〇流程圖。步驟2〇5中，資料區塊，（也就是加強上 M272315 鏈資料區塊）係從無線傳輸/接收單元被接收於各加強上鏈軟交接B節點ιι〇 處。步驟210令，各加強上鏈軟交接B節點11〇解碼被接收資料區塊，且該被 解碼資料區塊係被轉送至服務無線網路控挪。應注意各加強上鏈軟交接β 即點110將嘗試解碼被接收加強上鏈傳輸。當具有週期冗餘檢查時，除非無線 傳輸/接收單元實體及邏輯頻道/媒體存取控制—d#由其他方法已知，否則各加 強上鏈軟交接B節點11Q不能將被接„塊轉送至服務無線網路控制器 105。所有具有良好週期冗餘檢查結果之被成功解碼區塊均被轉送至服務無線網 路控制器105。 仍然參考第2圖’決定被成功解碼資料區塊之至少一複本是否從加強上鏈 軟交接B節點11〇被服務無線網路控制器1〇5接收(步驟215)。若步驟犯中 、疋服務無細路控制②1Q5尚未接收任何被成雜碼資料區塊之複本，則被 轉送資料區塊係被視為尚未被正確接收(步驟22〇)。步驟215卜若決定被成功 器⑽接收，難著決定被成功解韻料區塊之多重複本是否從不同加強上鍵 孝人父接B節點11〇被接收（步驟225)。 α若步驟225決定被成功解碼資料區塊之多重複本從不同加強上鍵軟交接b 即點110被接收，則僅-複本被儲存於被服務無線網路控制器⑽中之再排序 功能實體U5維持之再排序緩衝器（無圖示）中當作被正確接收資料區塊，而任 何«功解碼資料區塊之額特接收複本係被拋棄為綠㈣(步驟_。 最後，步驟235巾’被成功解碼資料區塊係被服務無線網路控制器郇中 之再排序功能實體115處理。服務無線網路控制器1〇5中之再排序功能實體仍 可執行再排序程序於這些被正確接收於再排序功能實體ιΐ5中之被成功解碼資 8 M272315 料區塊以支援侧憎遞至較高協定層125。 處理200係有助益，因為從不同加強上鏈軟交接㈣點nG被接收之資料 區塊可被Μ及組織於仵财以傳遞至服務無線網路控制器1()5之較高協定層 125。被放置於服務無線網路控制器1()5内之再排序功能實冑115可使加強上鍵 媒體存取控續包資料單元被處理獨錄被提供触各封包#料料之B節點 來成功接收及正雜遞至較高齡層235，導致媒體存取控織馳降低及無線 鏈路控制恢復。 第3圖顯不包含依據本創作替代實施例操作之一控制無線網路控制器洲5 及至少兩⑵加強上鏈軟交接B_ 11〇(111腫)之無線通信系統咖。一 或更多再排序魏實體315被實施於控制無線網路控制!| 來支援軟交接。 處理加強上鏈專用頻道功能之混合自動重複要求或自動重複要求處理係被放置 於各加強上鏈軟交接B節點310内之媒體存取控制實體32〇巾。各再排序功能 實體315可與外接至控制無線網路控制器3〇5之較高協定層325通信且包含一 相關資料緩衝器（無圖示）。 第4圖為軟交接期間包含處理系統·中資料區塊，也就是封包資料單元 之方法步驟之處理棚流程圖。步驟価中，資料區塊，（也就是加強上鍵資料 區塊)係從無線傳輸/接收單元被接收於各加強上鏈軟交接β節點31〇處。步驟 41〇中，各加強上鏈軟交接B節點310解碼被接收資料區塊，且該被解碼資料 區塊係被轉送至控制無_路控織娜。應注意各加強上鏈軟交接b節點训 將嘗試解碼被接收加強上鏈傳輸。當具有週期冗餘檢查時，除非無線傳輸/接收 單元實體及邏輯頻道/雜存取控制-d藉由其他方法已知，否則各加強上鍵軟交 接B節點310不能將被接收資料區塊轉送至控制無線網路控制器廳。所有具 M272315 有良好週航餘檢查結果之誠功解碼區塊均婦送至控制無、_路控制器 305。 仍然參考第4圖，決定被成功解碼資料區塊之至少一複本是否從加強上鍵 車人乂接B節點31 ()被控制無線網路控制器接收(步驟415)。若步驟415中 決定控制無線網路控制器哪尚未接收任何被成功解碼:將區塊之複本，則被 加強上鏈軟交接B節點31Q轉送之:雜區塊係被視為尚未被正雜收(步驟 420)。步驟415中，若決定被成功解碼資料區塊之至少—複本從加強上鏈軟交 接B節點31G被控制無線網路控制器哪接收，則接著決定被成功解碼資料區 塊之夕重複本是否從不同加強上鍵軟交接B節點副被接收(步驟卿。 若步驟425決定被成功解碼資料區塊之多重複本從不同加強上鏈軟交接b 節點310被接收’則僅一複本被儲存於翻空制無線網路控制器哪巾之再排序 力此實體315維持之再排序緩衝器（無圖示）中當作被正確接收資料區塊，而任 何被成功解碼^料區塊之額外被接收複本係被拋棄為多餘資料(步驟43〇)。 最後’步驟435中’被成功解碼資料區塊係被控制無線網路控制器娜中 之再排序功能實體315處理。其可執行再排序程序於這麵正確触於再排序 力犯貫體315巾之被成功解碼資料區塊以支援件列中傳遞至較高協定層。 處理侧係有助盈，因為假設這些B節點31〇具有相同控制無線網路控制 裔305，所以從不同加強上鏈軟交接β節點31()被接收之資料區塊可被組合及 組織於件财以_錄高财層325。雜其綱減置再排序舰於服務無 線網路控制器1G5中有些嚴格，但此經常為案例。然而，此限制係被其他考量 抵消。例如，服務無線網路控制_作之利益係降低混合自動重複要求操作之 延遲。最小化歧叙魏利益餘知難術躺巾。軟錄_，亦預期控 M272315 制無線麟控制器3Q5中具有用於包含被不同B節點則控制之胞元之主動加 強上鍵子針之所有胞元之共用上鏈排程器。 雖然本創作已參考較佳實施例_齡及說明，但熟練技術人士應了解只 要不背離上述本創作_，均可作各麵式及細節之改變。 元件符號說明 100，300無線通信系統 110’310加強上鏈軟交接B節點 120，320媒體存取控制實體 105 服務無線網路控制器 115，315再排序功能實體 305 控制無線網路控制器
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Claims (1)

  1. M272315 (b)用於從该B節點接收被成功解碼資料區塊至少之—複本之I置，其中今 無線網路控儀使職至少-再排序功能實财處職誠雜碼資料區塊之 該複本；及 (C)用於拋棄被接收自該B節點之被成功解韻料區塊之額外複本。 5. 如申請專利範圍第4項之無線網路控制器，其中該無線網路控制器係為 控制無線網路控制器（C-RNC)。 6. 如申請專利範圍第4項之無線網路控制器，其中各3節點係為加強上鍵 軟交接B節點。 7. 如申請專利範圍第4項之無線網路控制器，其中各B節點係包含可處理 加強上鏈專用頻道功能之媒體存取控制實體。 8. 一種積It電路⑽，用於處理被接收自複數_之_塊 包含： (a) 至少一再排序功能實體； (b) 較高協定層； (c)用於從該資料源接收被成功解碼資料區塊至少之一複本之裝置·及 ⑷用於拋棄被接收自該資料源之被成功解碼資料區塊之額外複本，’立中該 =體電路使賴再麟功能實體來處_減雜辦料崎之該複本以支援 仔列中傳遞至該較高協定層。 加強上鏈軟交接B 節點 9.如申請專利範圍第8項之積體電路，其中各資料源係為 其中各資料_包含可處理加強上 W·如申請專利範圍第8項之積體電路， 鏈專用頻道魏之雜存取控制實體。 13 M272315 11.如申請專利範圍第8項之積體電路，其中該積體電路係設置於服務無線 網路控制器（S-RNC)，其可於軟交接期間處理被該資料源轉送至該服務無線網路 控制器之資料區塊。
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