TWI337018B - A base station for determinig a channel quality and the method thereof, and wireless transmit/receive unit - Google Patents

A base station for determinig a channel quality and the method thereof, and wireless transmit/receive unit Download PDF

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TWI337018B
TWI337018B TW093120814A TW93120814A TWI337018B TW I337018 B TWI337018 B TW I337018B TW 093120814 A TW093120814 A TW 093120814A TW 93120814 A TW93120814 A TW 93120814A TW I337018 B TWI337018 B TW I337018B
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sich
transmissions
transmission
channel
cqi
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TW093120814A
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TW200518496A (en
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G Dick Stephen
Rudolf Marian
M Miller James
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Interdigital Tech Corp
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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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • 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
    • 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
    • H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • 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
    • H04W52/12—Outer and inner loops
    • 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
    • H04W52/20—TPC being performed according to specific parameters using error rate
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • 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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • 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
    • H04L2001/125—Arrangements for preventing errors in the return channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Description

1337018 取控制(MAC)協疋έ兑明書，5.4.0 (2003-03)中)粗略地列出一些3〇 CQI值對應於逐漸增尚之資料速率，以及因而越來越高之〇[ SIRs。在FDD中之該報告CQI值係由如下方式取得(依據3 Gpp
TS 25.214,實體層程序(FDD), V5.4.0 (2003-03)，第6A.2節）:「UE
應該報告表列中最高之CQI值給一單一HS-DSCH次訊框，其係 以HS-PDSCH編碼及調變之該傳輸區塊大小數量格式化，其係 相當於該報告或更低之CQI值，其係能於一結束第一槽之三時槽 參考期中，其係在該第一槽開始之前，其令該報告值被發 送’且其對於該傳輸區塊錯誤機率將不會超過0.1」。在TDD中， 該報告是不同的，該傳輸區塊大小只有在其於最後一個接收之 發送間隔(最後HS-DSCH接收處時槽之數量），且該發送會產生 一個0.1之區塊錯誤率時才會報告。
舉例來說，在現行之第5版之W-CDMA FDD中，該CQI係 為一個5位元長度之資訊位元序列，其係以一種(2〇, 5) Reed-Muller編碼方式進行編碼，編碼出來之2〇位元長度序列會 在一高速專用實體控制頻道(HS-DPCCH)之UL中送出，每一個 使用者具有一個個別的HS-DPCCH，其係具有一可調節之CQi 報告循環(回饋速率），一個使用者能報告在該HS-DPCCH上之該 CQI值’即使該使用者並未接收到在hs-DSCH上之資料。 舉另一個例子來說，在現行W-CDMATDD版本(3.84Mq)S 或高晶片速率(HCR) TDD)中，該CQI係為一個10位元長度之資 訊位元序列，其係以一種(32，10) Reed-Muller編碼方式進行編 碼’編碼出來之32位元長度之編碼序列會在視為HS-SICH—部 份之UL上送出，在現行的TDD下，一CQI發送僅能發生在如果 該使用者事先已經接收訊框中該HS-DSCH上之資料時。 7 [1337018 » 性能，CRC至少必須正常地跟資料攔位有—樣的大小才能查· 核’在這些考量之下，現行的HSDPA標準並不在hs_DPC(^ (FDD)以及HS-SICH (TDD)上使用 CRC。 因此，基於現存的技術，網路(基地台或是咖。不具備可靠 ’ 判定是否-個CQI是不是被廳的接收，觸^統置該wtru 使用-足夠高的UL發送功率，其係以一UL目標弧及得自模擬 的「經驗」，以致於錯誤的結果不太可能發生，且對於hsdpa 系統之操作也沒什麼傷害’因此提供一種可靠性债測和報告所 接收CQI值正確性之方法就會很有幫助。 % 【發明内容】 本發明之方法使得基地台能判定C Q ]；可靠性的程度。本發明 提供-種有用的CQI報告之可靠性偵測機制，其係由肥嫩基 地台接收自-WTRU，且提供-接收之CQI品質報告機制，其係 由該HSDPA基地台至該rnc，以便追蹤並調整一. 發送功率設定。 一種方法，其係用以在一無線通訊網路中增進一頻道品質 指標(CQI：)訊息之可靠性’其開始於接收和解石馬該⑽訊息。在鲁 CQI訊息中每-個符號判定之計量值皆會被計算，—個最大的判 定計重值和一第二大之判定計量值係被決定，該CQ〗訊息之可靠 性係藉由比較該最大判定計量值及該第二大判定計量值來決 定。 一種方法，其係用以在一無線通訊網路中增進一代表一傳 輸頻道品質之-接收訊息之可靠性，其係藉由接收—來自無線 傳輸及接收單元之一頻道品質指標(CQI)訊息所啟始，該 9 1337018 息接著被解碼’且會得到至少兩個不同代表該解碼之吻訊息之 值’該CQI訊息之可靠性係藉由比較該至少兩個值以決定。 -種系統’其伽以在—無線通訊鱗巾判定—傳輸頻道 之品質，該無線通訊系統包含至少一無線傳輸和接元 (WTRU)及-基地台，該WTRU包含產生器以產生一頻道品質指 標(cQI) ’該基地台包含接收裝置以接收該cqi，解碼裝置以解 碼該CQI，計算裝置以計算該解碼卿之―第―判定計量值及一 第二判定計量值，以及比較裝置用以比較該第一和第二判 篁值以判定是否該CQI包含一錯誤。 -種依據本發明構成之積體電路，其包含一輸入，盆係配 =接收-頻道品質指標(CQI)訊息，解碼裝置以解碼該网訊 心，计异裝置以計算該解碼CQI之—第—判定計量值及 =十量值’及比較裝置以比較該第一判定計量值及該第二欺 δ十里值以判定是否該CQI訊息包含一錯誤。 可由下列描述的較佳具體實施例來更細部地了解本發明， 其以實例提供說明且可以侧連的伴隨圖形來了解。 實施方式】 如同之後所使用的和描述的，一個⑽如包含但並未限制 = _行動台；—固定或行動用戶單位；一呼叫 _境下操作购形式之裝置。當之賴論到一 f it但並未限制於一節灿；一網點控制器；一存取點或 在一無線％境下任何形式之介面裝置。 減示為一種方法獅用以判定一CQI之可靠性，以及 其』於根據本發明之外迴路功率控制器。該方法腦之開始係 !0 1337018 藉由初始化一時間間隔計時器及數個計數器，例如總HS-SICHs 接收、錯誤HS-SICHs接收以及已漏失之HS-SICHs數量（步驟 102) ’該CQI係被接收(步驟1〇4)及解碼(步驟106)，該兩個最大 判定路由計數值係被評估以判定是否低於門檻值(步驟114)，如 果差異低於門檻值’則該CQI就有錯誤的可能’因此將被丟棄(步 驟116)。 如果差異符合或是超過門植值，接著該CQI就會被假定為有 效(步驟118)，下一步，該計數器將會增量(步驟12〇)，且不管該
時間間隔是否已經達到終端都會完成一判定(步驟122)，當然， 流程圖就會回到步驟104 ;步驟104_120之迴路就會持續重複下 去，而不管該計數器之值或是該時間間隔是否已經終止。 如果該時間間隔已經終止(步驟122)，則不管該計數器是否 符合或是超過門檻值都會完成一判定(步驟124)，如果該計數器 等二或大於該門檻值，該RNC就會發送職(步驟岡，該^ 接著發送該WTRU信號以調整該UL發送功率(步驟128)，於是該 方法即終止(步驟13〇)，如果尚未達断間間隔之終點(步驟
122) ’或是如_計數器低於該門檻值(步驟124)，則該 終止(步驟13〇)。 值得注意的是’步驟112中之差異判定亦可用於當該計量值 係為對數時’亦即係為分貝時，如果該計量縣為純數字的話， 則》，112日和114能以下列形式修改。該最大判定計量值與該第 驟112) ’織繼該門梧值 選擇之方法係包含額外的Iub發送簡單週期 。旎，係HS-SICHs接收之總數、錯誤HS_SiCHs接收 11 1337018 之數量以及HS-SICHs在一固定時間週期所漏失之數量，且報告 這些數量與錯誤門檻值無關，這類型之週期性報告將增加更多 的Iub發送信號，但在節點b中執行起來較不複雜。 第二圖所示為另一種方法2〇〇用以判定一 cq〗之可靠性及其 應用於根據本發明之外迴路功率控制。該方法2〇〇之開始係藉由 初始化數個計數器，例如總HS-SICHs接收、錯誤HS-SICHs接收 以及已漏失之HS-SICHs數量(步驟202)，該CQI係被接收(步驟 204)及解碼(步驟2〇6) ’對每一在cqi中之符號，一判定計量值係 被計算（步驟208)，該兩個最大之判定計量值係被選擇（步驟 210)，且該兩個最大之判定計量值之間的差異係被判定（步驟 212) ’該兩個最大之判定計量值之間的差異係被評估以判定是 否低於一門檻值(步驟214)，如果該差異低於該門檻值，則該CQI 就有錯誤的可能，因此將被丢棄(步驟216)。 如果差異超過門檻值，接著該CQI就會被假定為有效(步驟 21=，下一步，該計數器將會增量(步驟22〇)，且不管該時間間 隔是否已經達到終端都會完成一判定(步驟222)，當然，流程圖 就會回到步驟204 ;步驟204-220之迴路就會持續重複下去’而 不管該計數器之值。 如果該計數器等於或大於該門檻值，該RNC就會發送信號 (步驟224)，該RNC接著發送該WTRU信號以調整該瓜發送功率 (步驟226)，於是财法即終止(步驟228)，如賴計數器低於該 門植值(步驟222)，則該方法亦終止(步驟228)。 當該基地台解碼所接收之32位元碼字元(步驟1〇6, 2〇6广該 解碼程序之輸出可視作為N無誤假設之―，其中該資訊位元之數 量η係與Μ有關，其係M = 2n(在TDD中，n =⑼，換句話說，m 12 |I337018 符號中裡的-個會由WTRUi€出至基 設測試選擇轉號字母之最適 於縣地°之該假 元，令其表示該符號，亦即編;=元接耆將其轉換喊訊位 號，H二:二异法存在以判定什麼是最可能代表接收之符 唬八係通予不同於我們所知的符號。舉例來說， ==更有可能的事’則合併已知常識於該判定演t 符號通常皆是相同地被送出，是假設所有的 合適的據波器操作，其係每-符號都有二 k = 2母—符號具有—狀的波形(晶片/餘序列），每: 二接收之波形’其波形相對應於一特定的 μ *1成合適的濾波器之該關聯性輸出基本上是一個對 應於此里的波峰，—個很大的波 出的符號」(其中-碼字元等於 此即為破达 峰表干「、nAtB 日日片序列），而一小的關聯性波 疋正確的符號」，接著，該32個獲得的波峰 3 111 s被選出’且其會被狀為該觀出去的波峰， ==疋-個統計上的假設測試，平均上來說，該判定之符號 ^月匕做出的最佳判定’此一程序之實施例示於第三圖。於該 碼程序轉換所接收之頻道位元之序列成為平穩的 。十垔值用以每-可能在M CQI範圍外之符號，該CQI品質指 不可於—單—㈣電路或是作為分離的元件而實施。 COT:般來說，㈣訊位元序聰CQI字元)係為η位元長，該 子兀係被編碼為一(Ν，n) Reed-Muller編碼，其係ώΜ 職元長編碼之位元序列。舉例來說，在TDD中，有η =職訊 位疋’其導致1024 (Μ = 210)每個長度為Ν = 32位元的可能的編 13 [1337018 碼字元’於該HS-SICH上編碼該CQI之程序提供了一些樣本其 規劃將每一個該N碼位元成為N*4 = L頻道仅元，每一頻道位元 係藉由一個為16之展頻因子展頻（亦即一個16晶片長之展頻序 列）’其結果係為L*16 = C晶片。在TDD中，該cqi字元通常係 以一(32, 10) Reed-Muller編碼方式編碼，而n = 1〇, N = % l = 128, C = 2048。撇開-般性的漏失，該方法之原_樣地對於 FDD之(16, 5)編碼亦是有效的。 如同熟習此項技藝者所將瞭解的，任何其他形式之編碼組 合也可拿來使用，而本發明並未限制於此文前述之設定方案， 一種藉由頻道編碼理論所熟知之(N，n)編碼方案，以及存在;供 選擇的參數η和N可使驗本發明’其_定㈣酿元之比例 以編碼該頻道位元。舉例來說，也可使用一Reed_MuUer第一或 第二次序碼或是-Reed-S〇l〇mo_。該特定有_，離元之編 =組^並利顯’只㈣解碼器能對每—個符號計算分散之判 定計量值，而且每個符號可於全部的頻道上送出即可。 —第-之步驟110和112及第二圖之步驟21〇和212表示能判 定CQI可靠性之一個可能方法，許多其他用已判定哪可靠性之 方法也疋可仃的，舉例來說’該最大之判定計量值與第二大之 值的比例，或是㈣量值之間的差異以分貝（lGbg(比例))也可 =用。以一些簡單的方程式來說明，如表示該最大觀測 >、峰值’而Psecond表示該第二大之觀測波峰值，該比例⑻就能被 ^不為R — I / Pse_或是1〇g(Pmax) / l〇g(P_nd)或是更普遍地 以/ PpSecond)表示。另一個被提出來用以判定cqi可靠性的方 法係為該最大判定計量值之能量與M-1其他判定計量值之能量 總和或加權總和之比例，舉例來說，& (Μ.，係為在 [1337018
Reed-Muller解碼器之輸出所觀測之波峰值，Ρπ^即為朽最大值， 所量測之R係表為R = Pmax/ (ΣPi · p_)。 藉由比較該解碼之CQI符號之平穩判定計量值，該基地台能 ，用一簡單以門播值為基礎之判定機制，以便決定該接受之CQI 符娩是否有可能有或有可能沒有錯誤(步驟114, 214)，舉例來 忒，如果介於該最大和第二大計量值之間之該差異小於丨分貝， 就有非常咼的機率(典型地，大於95%)該cq〗有錯誤且該cqj應 該被摒棄，其他差異值也可使用，但相對的該有錯誤的機率
就會減低，一個較佳的差異範圍係為介於〇_2分貝之間，以便該 CQI處於錯誤狀態之機率足夠高。
以TDD為例’ 一個該可靠性偵測方法之實施例在偵測 CQI錯誤之能力方面之結果，示於第四圖和第五圖。第四圖和第 五圖之圖示包含在MUD之後BER、ACK -> NACK BER、NACK -> ACK BER、摒棄之CQls、正確但被摒棄之CqIs以及錯誤但卻 未摒棄之CQIs ’該圖示也包含!^ BER，其係1〇位元長度CQI 字元之第一位元，且指示該建議調變格式（不是qPSK就是 QAM)。該圖示顯示出該單一位元之BER，該RTBS包含其他九 個在該CQI字元之資訊位元，且其表示該建議傳輸區塊設定，其 係在該HS_DSCH傳輪區塊巾資触元的數量，其絲該被送出 之該WTRU建議’該圖示顯示出這九個位元之該字元錯誤率 (WER) ’其指出九個rtbS位元只少有一錯誤的機率。 下述的言論可由第四圖和第五圖得知：丨）該ACK/NACK平 穩判定門檻值係為0.1*信號振幅；2)搏棄一CQI的標準，包含 在振幅上該最尚/第二高關聯性波峰小於1分貝；3)錯誤的CQls 月色立即地被彳貞測，以及4)「正確的CQIs被錯誤地摒棄」與「錯 15 [1337018 誤的CQIs未被摒棄」之比例能輕易地衡量以達到目標錯誤值。
因此’一個進步的CQI範圍編碼可藉由本發明而達成，根據 前述方法’當HS-SICH攜帶ACK/NACK以及該CQI被接收了， 並沒有裝置可瞭解是否該接收之HS-SICH範圍（不是該 ACK/NACK就是該CQI)是否是在錯誤狀態接收，因為其並沒有 CRC ’如果該ACK/NACK係於錯誤狀態被接收，而該節點B並 未瞭解這點，舉例來說，該節點B可能重新發送一封包，其係已 經成功地於該WTRU接收或摒棄(未發送)一封包，其係應該已經 被發送’而該WTRU等候一延長時間，而該封包將永遠不會到 達且該記憶體就會延遲。根據本發明之C(^可靠性偵測允許該節 點B指示哪個接收之HS_SICHs是可靠的而能繼續適當地動作， 就像是重新發送，同樣地，為了時時合理地確保(當接收〈該例 之1%)該HS-SICH係為可靠的’該HS-SICH需要於一高SNR值下 被接收，這表示該WTRU必須於一高功率發送，因為該wtru 並不具有那麼多功率且可能要讓涵蓋區域達到最大值，該 WTRU發送功率必須足夠以符合平均〇丨之hs_SIChbeR，所提 出之CQI可靠性偵測方法經由報告該CQI提供給該節點B、追蹤 該現行發送功率設定於該WTRU之裝置以及調整該功率設定之 裝置。 除此之外，可靠性偵測方法也能用以提供指標給HSDpA基 地台，及在HS-SICH/HS-DPCCH表現的RNC及CQI報告，以警 告該HSDPA基地台該CQI值可能是錯誤的，透過來自該 基地台經由該Iub/Iur網路介面傳至rnc的訊息以警告該傳遞到 SIR可能不適當亦成為可能。簡單的統計資料係被提供，例如有 多少接收自一特定WTRU之接收HS_SICHs係基於CQi計量值而 16 ，:[337018 第-圖係為根據本發明之方法之流程圖’其係、翻於fdd和 TDD。 第二圖係為根據本發明方法之一實施例之流程圖，其係適用於 FDD和 TDD。 第二圖所示為CQI可靠性偵測之一實施例，其係適用 TDD。 第四圖係為一圖式’其係附加的白高斯雜訊(AWGN)頻道 HS-SICH成果，其係來自TDD模擬。 第五圖係為一圖式’其係WG4測試案例2頻道HS-SICH成果，係 來自TDD模擬。 【主要元件符號說明】 100'200 方法 102、104、106、108、110、112、114、118、120、122、124、 126、128、130、202、204、206、208、210、212、214、216、 218、220、222、224、226、228 步驟

Claims (1)

  1. v '?) v '?)1337018 十、申請專利範圍： 一種用於判定一無線通訊系統中的一頻道品質的方法，包 括： 接收一高速共享控制頻道(HS-SICH)傳輸： 計數一 HS-SICH傳輸總數； 計數一失敗的HS-SICH傳輸數量； 計數一漏失的HS-SICH傳輸數量；以及 週期性地報告一固定時間週期的該HS-SICH傳輸總 數、該失敗的HS-SICH傳輸數量以及該漏失的HS-SICH傳輸 _ 數量’藉以該報告為該頻道品質的一指示。 2. —種被配置用於判定一頻道品質的基地台，包括： 一接收器，被配置用於接收一高速共享控制頻道 (HS-SICH)傳輸； 一計數器’被配置用於計數—HS_SICH傳輸總數、一失 敗的HS-SICH傳輸數量、以及一漏失的HS_SICH傳輸數量； 以及 一報告裝置’被配置用於週期性地報告一固定時間週期 鲁 的該HS-SICH傳輸總數、該失敗的HS_SICH傳輸數量以及該 漏失的HS-SICH傳輸數量，藉以該報告為該頻道品質的一指 示。 3. —種被配置用於判定一頻道品質的基地台，包括： 一接收器，被配置用於接收一高速共享控制頻道 (HS-SICH)傳輸； 一第一計數，，被配置用於計數—HS_SICH傳輸總數； 一第一a十數态’被配置用於計數一失敗的傳輸 19 1337018 數量； 數量；數益’被配置用於計數一漏失的HS_SICH傳輪 一報告裝置’被配置用於週離地報告—財時間週期 的f HS’SICH傳輸總數、該失敗的職1(聯輸數量以及該 漏失的HS-SICH傳輸數量，藉以該報告為該頻道品質的一指 7ΤΓ 〇 4. 一種無線傳輸/接收單元^丁如），包括： 一傳輸器，被配置用於傳輸複數個高速共享控制頻道 (HS-SICH)傳輸； ' 一接收器，被配置用於接收一功率控制命令，該功率控 制命令是藉由計數一HS-SICH傳輸總數、計數一失敗的 HS-SICH傳輸數量、計數一漏失的HS_SICH傳輸數量以及將 所述計數得到的數值與一預定臨界值進行比較而得到；以及 一傳輸功率調整裝置’被配置用以基於該功率控制命令 來調整該WTRU的一上行通路傳輸功率。
    20
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