TWI327423B - Precoding and sdma support - Google Patents
Precoding and sdma support Download PDFInfo
- Publication number
- TWI327423B TWI327423B TW095131897A TW95131897A TWI327423B TW I327423 B TWI327423 B TW I327423B TW 095131897 A TW095131897 A TW 095131897A TW 95131897 A TW95131897 A TW 95131897A TW I327423 B TWI327423 B TW I327423B
- Authority
- TW
- Taiwan
- Prior art keywords
- precoding
- sdma
- user
- transmission
- wireless communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0658—Feedback reduction
- H04B7/0663—Feedback reduction using vector or matrix manipulations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
1327423 九、發明說明: 【發明所屬之技術領域】 以下描述一般而言係關於無線通信,且係關於用於無線 通信系統之預編瑪及分空間多重近接(SDMA)支持。 【先前技術】 無線網路連接系統已變成許多人進行全球通信的普遍方 法。無線通信裝置已變得愈來愈小且愈來愈功能強大以滿 足消費者的需要,其包括改良之可攜性及便利性。使用者 已發現無線通信裝置(諸如蜂巢式電話、個人數位助理 (PDA)及其類似)之許多用途’且要求可靠之服務及擴展之 覆蓋面積。 可藉由在一區内使用波束成形傳輸以自一基地台或進接 點通信至(多個)行動裝置來增強無線通信系統之效能。此 區可為一服務區域且可包括子區或扇區。位於基地台之多 個傳輸天線可用於形成波束成形傳輸,其利用通常覆蓋較 窄於使用單個傳輸天線之傳輸之面積的"波束"。波束所覆 蓋之區域或扇區内的信號對干擾及雜訊比(SINR)增強了。 並未由波束覆蓋之扇區的部分被稱為零值區。在此零值區 内之行動裝置通常具有一極低之SINR,從而導致降低之效 倉b及可此之資料損失。通信系統可使用在特定使用者裝置 處動態地引導波束的波束操控。在波束操控期間,使用者 裝置改變位置時重定向波束。 通信系統中之—挑戰在於將行動裝置或接收器定位於由 進接點或傳輸器所伺服之區域的一特殊部分中。在一傳輸 114281.doc 1327423 器具有多個傳輸天線之此等情況下,並不需要將每一天線 所提供之信號相組合以在接收器處提供最大功率。在此等 情況下,在接收器處解碼所接收之信號可能存在問題。 為了克服前述問題’需要改良具有多個天線之無線鍵路 之訊雜比(SNR)的技術。改良之SNR亦可改良接收器對传 號之解碼。 【發明内容】 下文呈現一或多個實施例之一簡化概述以便提供此等實 施例之一些態樣的基本理解。此概述並非為該或該等實施 例之廣泛綜述,且並非意欲指定實施例之主要或關鍵元件 抑或描繪此等實施例之範疇。此概述之唯一目的是以簡化 形式呈現所述實施例的一些概念以作為後面所要呈現之更 詳細描述的前奏。 , 根據一或多個實施例及其對應之揭示内容,結合無線通 信及增強此等通信之效能來描述多個態樣^ 一實施例為一 種用於增強無線通信環境中之效能的方法。該方法包括接 收一用於一傳輸模式之使用者偏好。該方法進一步包括將 使用者偏好與碼薄中之一或多項相關聯且將使用者指派至 一對應於該或該等項之傳輸模式。該傳輸模式為以下各者 中之一者:預編碼、分空間多重進接(SDMA)、SDMA預編 碼、多輸入多輸出(ΜΙΜΟ)、ΜΙΜΟ預編碼、MIMO-SDMA 及分集。每一項可對應於—傳輸模式β 一些實施例為一種用於確定一傳輸模式之一使用者之偏 好的方法。該方法包括:確定一使用者之通道特徵;自碼 114281.doc 1327423 薄選擇-或多個傳輸模式來應用;及傳輸選定之該模式或 該等模式之一識別符。確定_使用者之通道特徵可包括藉 由利用一CQ!、功率偏移、信號強度及其他扇區干擾資訊 來確定。模式為以下各者中之一者:預編碼、分空間多重 進接(SDMA)、SDMA預編碼、多輸入多輸出(Μ· SDMA)、ΜΙΜΟ預編碼及分集。 -些實施例為-種無線通信裝置,其包括一處理器及一 φ 肖該處理器輕接之記憶體。該處理器可經組態以自-碼薄 選擇複數個傳輸模式中之一傳輸模式。傳輸模式可為以下 各者中之-者:預編碼、分空間多重進接(SDMA)、sdma .預編碼、多輪入多輸出(MlM〇)、MIM〇預編碼、mim〇_ , SDMA及分集。該瑪.薄中之每―項可對應於—傳輸模式。 在一些實施例中,處理器在裝置於不同基地台間移動時自 動地進接-不同碼薄,或處理器在裝置於不同基地台間移 動時接收一自其選擇一傳輸模式的不同碼簿。 • 、一些實施例為-種無線通信裝置,其包括-用於接收用 於-傳輸模式之一使用者偏好的構件。該裝置中亦包括— 用於將偏好與一碼薄中之一或多項相關聯的構件及用於將 使用者指派至一對應於該項或該等項之傳輸模<的構件。 每一項可對應於一傳輸模式。傳輸模式可為以下各者中之 一者:預編碼、分空間多重進接(SDMA)、SDMA預編碼、 多輸入多輸出(MIM0)、MIM〇預編碼、mim〇 sdma及分 集。 刀 一些實施例為一種無線通信裝置,其包括一用於確定一 114281.doc 1327423 使用者之通道特徵的構件、一用於自一碼簿選擇一傳輸模 式來應用的構件,及一用於傳輸選定之該模式或該等模式 之一識別符的構件。該用於確定—使用者之通道特徵的構 件包含藉由利用一CQI、功率偏移、信號強度及其他扇區 干擾資訊來確定。模式可為以下各者中之—者:預編碼、 分空間多重進接(SDMA)、SDMA預編碼、多輸入多輸出 (ΜΙΜΟ)、ΜΙΜΟ預編碼、MIM〇_SDMA及分集。
為了完成前述及相關目標,一或多個實施例包含下文充 分描述及申請專利範圍中特定指出的特徵。以下描述及附 加圖式詳細陳述某些說明性態樣且指示可採用實施例之原 理之多種方法中的少數。當結合圖式考慮時,其他優勢及 新穎特徵將自以下實施方式變得顯而易見,且所揭示之實 施例意欲包括所有此等態樣及其均等物。 【實施方式】 現參看圖式來描述多個實施例。在以下描述中,出於解 釋之目的’陳述許多特殊細節以便提供對—或多個實施例 之徹底理解。然而,顯㈣在並無此等特殊細節的情況下 實踐此(等)實施例。在其他情況下’以方塊圖形式展示熟 知結構及技術以便有助於描述此等實施例。 如本申請案中所使用,術語"組件"、"备 乐統及其類似意 欲表示一與電腦相關的實體,其可 、 腹韌體、硬體盥 軟體之一組合、軟體或執行中的軟體。 … 平例而言,一组件 可為(但不限於)一在一處理器上運作 . 〜枝·程序、一虑 器、一物件、一可執行物、一執行進 程式及/或一 114281.doc 1327423 電腦。為了說明’-計算裝置上運作的應用程式與該計算 裝置均可為一組件。一或多個組件可常駐於一處理程序及/ 或執行進程令,且一組件可位於一電腦上及/或分佈於兩 個或兩個以上電腦之間。此外,此等組件可由其上儲存有 多種資料結構的多種電腦可讀取媒體執行。該等組件可諸 如根據具有一或多個資料封包的信號(例如,來自一組件 之以信號形式的資料,該組件與一區域系統、分佈式系統 中的另一組件相互作用及/或經由一網路(諸如網際網路)與 其他系統相互作用)經由區域及/或遠端處理程序進行通 信。 此外’本文結合一使用者裝置描述多個實施例。一使用 者裝置亦可稱為系統、用戶單元、用戶台、行動台'行動 裝置、遠端台、進接點、基地台、遠端終端機、進接終端 機、使用者終端機、终端機、使用者代理或使用者設備。 一使用者裝置可為一蜂巢式電話、一無線電話、一會談起 始協定(SIP)電話、一無線區域迴路(WLL)台、一 pDA、一 具有無線連接能力的手持式裝置或連接至一無線數據機的 其他處理裝置。 此外’本文所述之多個態樣或特徵可實施為使用標準程 式化及/或工程技術的方法、裝置或製造物品。如本文所 使用之術浯"製造物品"意欲涵蓋可自任何電腦可讀取裝 置、載體或媒體進接的電腦程式。舉例而言,電腦可讀取 媒體可包括(但不限於)磁性儲存裝置(例如,硬碟、軟性磁 碟、磁條等)、光碟(例如,緊密光碟(CD)、數位化通用碟 114281.doc •10· 1327423 片(DVD)等)、智慧卡及快閃記憶體裝置(例如,卡、棒、 隨身碟等)。 現參看圖式,圖1說明根據本文所呈現之多個實施例的 無線通信系統100。可利用多個模式來改良無線系統100中 之通信,包括:預編碼、SDMA、SDMA預編碼、多輸入 多輸出(ΜΙΜΟ)、ΜΙΜΟ預編碼,及/或MIM04DMA,及分 集。如所說明,一行動裝置102與一基地台104進行無線通 信。應瞭解,雖然為簡單起見說明一個行動裝置102及一 個基地台104,但可存在一個以上行動裝置及一個以上基 地台。 基地台104包括可傳輸天線,其產生覆蓋預定區域之波 束,從而導致一固定波束圖案。基地台104支持諸如預編 碼、SDMA、SDMA預編碼、ΜΙΜΟ、ΜΙΜΟ預編碼及/或 ΜΙΜΟ-SDMA之技術。無論利用何技術,基地台104均執行 預處理。舉例而言,對於預編碼而言,利用一可在某一時 段内調變一使用者之所有傳輸的特定向量。對於ΜΙΜΟ預 編碼而言,可使用向量之一集合來調變來自基地台104之 傳輸。 碼簿106含有可對應於多個傳輸模式之不同向量及/或矩 陣的項,其中可預界定此資訊。每一項可對應於一傳輸模 式或一空間處理形式(例如,預編碼、ΜΙΜΟ預編碼、 SDMA、具有預編碼的SDMA、MIMO-SDMA等)。舉例而 言,碼薄106可含有64個項之集合,然而,可存在任何數 目個項且64為一任意數目。碼薄106可經定製以用於與(多 114281.doc -11 - 以/423 個)基地台1〇4進行通信的基地台丨04或扇區或(多個)行動裝 置102。舉例而言且並非用於限制,碼薄i 〇6可支持應用^ 文所述之傳輸模式的複數個使用者。應注意,雖然展示一 個碼薄1G6,但系統_中可存在—個以上碼薄且—個以上 碼薄106可與行動裝置1〇2及/或基地台1〇4相關聯。 打動裝置102可將行動裝置102想要之項告知基地台 。行動裝置102與基地台1〇4中之任一者或兩者可先2 地已知碼薄106。舉例而言,基地台1〇4可將其之碼薄1〇6 告知行動裝置102。當行動裝置102於不同基地台1〇4間移 動時,有可能為特定基地台1〇4改變碼簿1〇6。可由行動裝 置102自主地(例如,藉由一處理器進接不同碼薄)或藉由基 地σ 104將改變告知行動裝置1〇2來自動地執行此碼薄改 變。 在SDMA中,可將多個使用者同時排程至可辨別其空間 簽名的相同時頻資源。在SDMA中,將一扇區分為虛擬扇 區以使得不同區中之使用者裝置共用相同通道資源,藉此 達成更向的空間再用。可能存在一潛在地提供穩健之信號 傳輸的獨立傳輸模式。此傳輸模式可用於傳輸控制及/或 廣播資料。可將每一虛擬扇區進一步再分為更窄之空間波 束之集〇以使得—虛擬扇區内之一特定波束(或波束之線 性組合)可應用至一特定使用者裝置,藉此增加使用者裝 置之天線增益且限制由傳輸所形成之干擾的空間擴展。 當谷里接近非線性區時,在高SNR的情況下SDMA為有 用的。在此等實施例中,重疊多個使用者以每一使用者之 114281.doc •12- 1327423 減少之SNR為代價來增加可用通道的數目(維度)。假設在 尚SNR的情況下’使用者處於非線性容量區,此方法增加 了系統容量。另一方面,在低SNR的狀態(容量曲線之線性 區)下,增加維度時降低使用者之功率通常為無益的。在 此等實施例中,經由諸如可對資訊之多個流或流動進行預 編碼的預編碼(ΜΙΜΟ預編碼)之技術來增加使用者之SNR為 有益的。此等實施例利用波束之一預界定集合來傳輸至使 用者。在一MIMO方案中,存在傳輸至相同使用者之多個 流’其中可沿多個本征向量方向傳輸資料。 利用所揭示之技術,藉由在SDMA波束之波束空間中應 •用預編碼以使得能夠無縫地操作多輸入單輸出/多輸入多 輸出(MISO/MIMO)預編碼。特別地’若存在少數個啟用 SDMA之虛擬扇區,則每一此種區進一步由窄空間波束之 集β組成。此等窄波束形成發生於彼虛擬扇區内之傳輸的 基礎。 φ 利用何模式(預編碼、SDMA、SDMA及預編碼、Mim〇 及預編碼,或MIM〇及sdma)之決定可基於一或多個通道 條件進行。一通道品質指示符(CQI)技術可用以確定使用 何向量,例如提供最高值或最低值。對於預編碼而言,可 預處理使用者之傳輸的一特定項。對於預編碼 而:,可利用向量之一集合來預處理基地台之傳輸。預編 碼提供一更高之SNR,從而潛在地導致更佳效能。 圖2說明一根據多個實施例之多重進接無線通信系統 200。 _ - L γ. 重進接無線通信系統200包括多個小區,例如, 114281.doc •13· 1327423 小區202、204及206。在圖2之實施例中,每一小區202、 204及206可包括一進接點250,該進接點250包括多個扇 區。多個扇區由天線之諸群形成,每一群負責與小區之一 部分中之進接終端機進行通信。在小區2〇2中,天線群 212、214及216中之每一者對應於一不同扇區。在小區2〇4 中,天線群218、220及222中之每一者對應於一不同扇 區。在小區206中,天線群224、226及228中之每一者對應 於一不同扇區。 每一小區包括若干進接終端機,其與每一進接點之一或 多個扇區進行通信。舉例而言,進接終端機23〇及232與基 地台或進接點242進行通信,進接終端機234及236與進接 點244進行通信,且進接終端機238及24〇與進接點246進行 通信。 如圖2所說明,每一進接終端機23〇、232、 238及240定位於與相同小區中之其他進接终端機不同之其
個別小區之部分中。此外,每一進接終端機可與正與其進 行通信之對應天線群相距不同距離。此兩個因素提供亦歸 因於可51起每-進接終端機與其正騎龍之對應天線群 之間存在不同通道條件的小區巾之環境及其他條件的情 況0 如本文所使用’-進接點可為一用於與終端機進行通信 之固定站且亦可稱為基地台、節點—些其他術語且 可包括基地台、節點B或一些其他術語之某些或所有功能 性…進接終端機亦可稱為使用者設備_、無線通信裝
If4281.doc •14- 1327423 置、終端機、行動台或一些其他術語,且可包括使用者設 備(UE)、無線通信裝置、終端機、行動台或一些其他術= 之某些或所有功能性。 在一些實施例中,可在基地台處利用已知之正交或準正 交向量或矩陣之集合以便提供SDMA(例如,囡—々ώ A ★ 回疋或自適應 性扇區)。若基地台知道用於每一使用者之向量或波束, 則基地台可在不同使用者利用正交或準正交向量或矩陣的
情況下為不同使用者分配相同通道。在其他實施例中,系 統200可包括一對應於無預編碼之全向波束。基地台可將 此波束用作廣播或多播傳輸β在其他實施例中,系統2卯 可在向使用者報告此通道資訊的情況下利用並無之 預編碼。 丄圖3說明根據本文所呈現之一或多個實施例的一無線通 信系統3G0。三扇區基地台逝可包括多個天線群。舉例而 言,一個群可包括天線3〇4及遍,另—群可包括天線3〇8
及3i〇’且第三群可包括天線312及314。雖然每一天線群 說月為兩個天線’然而,更多或更少天線可用於每一天線 群。行動裝置316與天線312及314進行通信,其中天線η】 及3 14在一正向鏈路318上傳輸資訊至行動裝置η 6且在一 反向鏈路320上自行動襄置316接收資訊。行動裝置切與 天線304及306進行通信,其中天線剔及遍在—正向鍵路 324上傳輸資訊至行動裝置322且在一反向鏈路326上自行 動裝置322接收資訊。 母天線群及/或其中天線經指定以進行通信的區域可 114281.doc •15- 1327423 稱為基地台302之扇區。在一或多個實施例中,天線群經 設計以與基地台302所覆蓋之區域之一扇區中的行動裝置 進行通信。可利用波束成形技術在扇區中提供固定傳輸方 向或可替代地利用扇區。舉例而言,波束圖案可在三扇區 基地台之扇區中提供多個傳輸方向,從而導致一虛擬六扇 區基地台。再分扇區之此能力可導致增加之系統容量。 SDMA、ΜΙΜΟ及/或機會性波束成形可用於分頻系統(諸 如,正交分頻多重進接(OFDMA)系統)。一 OFDMA系統將 全部系統頻寬分割為多個正交副載波。.此等副載波亦可稱 為音調、載波、副載波、頻率組及/或頻率通道。每一副 載波與一可利用資料來調變之副載波相關聯。一 〇FDMa 系統可使用分時及/或分頻多工來達成用於多個使用者裝 置之多個資料傳輸間的正交性。可將獨立副載波分配至使 用者裝置之群’且可在分配至每一使用者裝置之該(等)副 載波上發送用於該使用者裝置之資料傳輸。可為分配有不 同頻率區之使用者裝置實施SDMA、ΜΙΜΟ及/或機會性波 束成形。 在一波束成形傳輸系統中,使用獨立波束分割扇區。由 一基地台扇區伺服之使用者裝置可指示一給定波束之偏 好。基地台可使用SDMA、ΜΙΜΟ、機會性波束成形或其 他排程方法來排程給定波束上之使用者裝置的傳輸。此 外,具有一固定波束圖案之波束成形允許一基地台同時利 用SDMA、ΜΙΜΟ及機會性波束成形排程技術。舉例而 言’可使用SDMA來排程空間正交之使用者裝置,可使用 114281.doc 1327423 ΜΙΜΟ來㈣具有條件良好之料通道較时裝置且可 使用機會性波束成形來排程額外使用者。 系統3 00可利用結合預編碼技術的波束成形。預編碼通 常為向里工間之里化表不,其中將一向量之不同項應用至 不同傳輸天線。在具有多個資料流之ΜΙΜ〇的情況下,預 編碼可由向量之一集合組成,其中每一向量對應於某一 ΜΙΜ〇流。應注意,多個資料流可包括-具有連續消除之 乡層ΜΙΜ〇傳輸、具有在多個傳輸天線上多工之資料符號 攀 &單個或多碼字組傳輸。 在一些實施例中,可自預編碼矩陣選擇預編碼權重,預 、編碼矩陣中之每-列對應於某一傳輸天纟而每一行對應於 ΜΙΜΟ机。對於此ΜΙΜΟ預編碼而言,可應用一純量或 向量量化。對於純量量化而言,獨立地量化預編碼矩陣之 係數。對於向量量化而言,整個預編碼矩陣與一特定量化 才曰數相關聯。應注意,空間量化精確度固有地與通常對通 φ 道條件具有較好瞭解的接收位點(使用者裝置)向傳輸位點 (基地台)報告所要量化指數所需要的反饋量相關。耗用昂 貝時向畺量化可為更有效的。作為一實例,每靜態通道頻 率組之量化指數的6位元表示(因此,64個預編碼矩陣)可達 到一4x4 ΜΙΜΟ系統中的最佳(連續)反饋的效能。應注意, 靜態通道頻率組意指通道幾乎恆定不變的時間頻率區。 圖4說明利用所揭示之改良無線環境中之通信的技術之 扇區402的波束圖案4〇(^扇區4〇2包括若干虛擬扇區, 該等虛擬扇區包括自一進接點4〇6傳輸之若干波束4〇4。所 114281.doc •17- 1327423
說明之波束404表示波束集合之兩個獨立組合,每一波束 集合具有五個波束。應理解,所揭示之實施例可利用更多 或更少波束組合及/或波束之子集合。舉例而言,集合中 之更窄波束之任何組合可用以改良方向性。每―波束可與 -組預編碼權重相關聯’在__些實施例中,預編碼權重可 對應於可用於預編碼之單位矩陣。在一些實施例中,一給 定虛擬賴中之具㈣編碼權重之波束的组合相對於每一 其他虛擬扇區中之具有預編碼權重之波束的每一其他組合 為準正交#。應注意,可保護一些波束(例如,虛擬扇區 之邊緣處的彼等波束)不經受預編碼權重以便防止干擾或 洩漏問題。若使用一預編碼模式,則傳輸且並不重疊"波 束"。在ΜΙΜΟ模式中,利用"波束,,之多個組合。 不同於將預編碼權重(例如,預編碼矩陣之列)直接應用
於不同傳輸天線之標準預編碼,根據一些實施例,將預編 碼係數應用於波束《基於通道知識,此等方法可允許波束 之一任意線性組合建構於一虛擬扇區内。因此,假設區足 夠寬以擷取對應於一特定使用者裝置之大多數通道能量, 則可在一虛擬扇區上達成一高預編碼效率。 此方法亦可確保線性組合與其他虛擬扇區内之波束的線 性組合為準正交的。因此,可在將相互(扇區内)干擾保持 為低的情況下將不同虛擬扇區中之相同資源指派至使用者 裝置。 在其他實施例中,根據平均空間協方差矩陣來界定虛擬 扇區且利用為每一區所界定之平均協方差矩陣來產生該區 114281.doc -18- 1327423 之預編碼矩陣作為矩陣的(偽)隨機實現。藉由選擇不同區 之準正交平均協方差矩陣,可在將不同虛擬扇區上之相同 資源指派至使用者裝置時達成一低位準之小區内干擾。 將一特定使用者裝置置於利用波束及預編碼權重組合之 模式中的決定可基於將相同資源排程至一不同虛擬扇區上 的另一使用者裝置且可由進接點作出此確定。該確定可基 於由使用者裝置報告之用於所要預編碼矩陣的通道品質。 確定亦可基於一旦在SDMA模式中可引起扇區内干擾的相 對於其他虛擬扇區之通道強度。 對於並未經排程以使用波束與預編碼權重組合之使用者 裝置而言,可在包括整個扇區之虛擬扇區上執行預編碼。 在此實施例中,可相對於傳輸天線(典型方法)或相對於波 束來界定預編碼矩陣。 應注意,波束空間預編碼可有益於支持SDMA,因為其 給出限制被排程不同虛擬扇區上之相同資源的使用者之間 的干擾的天然方式。相對於傳輸天線之預編碼允許界定一 類預編碼矩陣以使得對於任一預編碼矩陣而言,每一天線 傳輸相同功率詈。ΛΚ力赦瞅也丨傅ία / . ......
於廣播傳輸之預編碼及/或SDMA。
功能區塊表示由一處理器、 -—系統50〇的功能區塊。此等 軟體或其組合(例如,軔體)實 114281.doc -19- 1327423 施的功能。包括彼此間建立介面之一波束產生器5〇2、一 指派器504、一排程器506及一通信器508。雖然展示了四 個功能區塊’但可存在更多或更少功能區塊且可根據本文 所呈現之多個實施例組合或分離一些功能區塊。 波束產生器502可經組態以用一或多個向量及/或一或多 個向量組合或集合來預處理信號。舉例而言,波束產生器 了產生一具有一覆蓋區域之第一向量或向量集合。波
束產生器502可進一步產生具有一與第一向量或向量集合 之覆蓋區域大體上不同或稍微不同之覆蓋區域的一第二 (第二、第四等)向量或向量集合。以此方式,所產生之向 1或向量集合不應重疊且可為正交的。在其他實施例中, 第二向量(或向量集合)可具有與第一向量(或向量集合)相 同之覆蓋區域。 心派器504可經組態以指派一或多個使用者裝置至第一 波束或波束集合。指派器5〇4可與一碼薄相關聯,該碼薄 含有進接終端機可自其選擇的-向量之職集合。碼簿中 之每一項可對應於-類型之向量。因&,指派器5〇4可將 使用者偏好與碼薄中之一項或多項相關聯。舉例而言,一 ::為一對應於預編碼之向量。另一項可對應於用於 「預編碼之兩個向量…矩陣中之每一行可為一向 群隼陣之^,每—集合對應於-個SDMA 群集。應藉由在傳輸器或進接點處 分離SDMA使用者。若兩個使用者重疊,在^ 不同群集獲取波束的情況下重叠。舉例而言,若Si使: 11428I.doc •20- '、要自個群集傳輸,則將一個或兩個使用者發送至碼 薄中之不同項,且SDMA並不用於此等使用者。 可利用一預編碼技術來將一特定波束(或波束集合)關聯 特疋使用者裝置。指派器5 可進一步經組態以指派 一第二(第三、第四等)使用者裝置至一第二(第三、第四 等)波束或波束集合,其可考慮一空間處理技術。在其他 實施例中,指派器5〇4可在僅將利用預編碼的情況下指派 第一使用者裝置至第二(及隨後)波束或波束集合。根據一 些實施例,指派器5〇4可確定使用者之一通道特徵。 排程器506可經組態以基於分空間多重進接(SDMA)、多 輸入夕輸出(ΜΙΜΟ)及/或機會性波束成形排程技術排程使 用者裝置之通信或排程使用者裝置之通信至一傳輸模式 (例如,預編碼、SDMA、SDMA預編碼、ΜΙΜΟ、ΜΙΜΟ預 編碼、MIMO-SDMA、分集)^應最佳化此排程以增強無線 通信環境中之效能。排程器506可選擇要應用之一或多個 傳輸模式。選擇可對應於碼薄中之該項或該等項β 通化器508(或傳輸器/接收器)可經組態以自每一使用者 裝置接收關於一波束或波束集合偏好的資訊。舉例而言, 通信器508可接收用於一傳輸模式之一使用者偏好。通信 器508亦可經組態以傳輸所選定之該模式或該等模式的識 別符。以此方式,通信器508可與其他功能區塊建立介面 以定位可共用一共同進接點之資源的兩個或兩個以上使用 者裝置。 圖ό A說明一用於增強一無線通信環境中之效能的方法。 114281.doc •21· 該方法_始於_,其中基於由使用者行㈣置料定之 複數個準則來接收一使用者偏好。該使用者偏好可包含一 用於識別模式的偏好、多個模式連同用於一些或所有 之相關CQ卜用於_或多個模式之⑽之間的差異^ 或能夠用於確定此偏好之其他資訊。 在6〇4處,讀取一碼薄以確定何模式及特殊向量、或多 個向量、或矩陣或多個矩陣對應於使用者偏好(例如,對 應於包括在使用者偏好中之一詈 置化“數)。可藉由將所接 收之偏好與碼薄中之-項或多項相關聯來執行碼薄的讀 取。在6〇6處,可利用該特殊向量、或多個向量、或矩陣 或多個矩陣來將使用者指派 ,4士 一地 ?日祇特疋空間處理模式或傳輸模 式。特疋傳輸模式可對應於碼薄中 該項或該等項。 之對應於使用者偏好的 中之·聯至-特定空間處理模式可採取許多形 式。應理解’以下論述僅出 傲 1皇出於舉例之目的且並非用於限 截例而言,項之一集合可對應於預編碼,其可用於視 2圍内◎作中。的複數個使用者。為了界定此複數個使 #疋波束操控向S且其可用於視線範圍内之使用 f。 =另-集合可為波束操控向量之一線性組合。可將此 向量指向一扇區中之某一方向。因此,並非每 ;"生吏I者處於視線範圍内且可利用此等波束操控向量之線 性組合。碼薄中之@s ^ 4 項之另—集合可對應於此等線性組合, 例如,包括任何數目(2、3、4等)個組合的組合之集合。應 114281.doc •22· 1327423 注意,項之第-集合可稱為"波束"且項之下一集合可為波 束之線性組合。進接點可使用此等預界定波束。
根據ΜΙΜΟ,可界定項之一集合,其中每一項包括兩 個、三個、四個、五個等向量。矩陣之每一行可為波束之 -線性組合。用以區分料行之構件可確定祕組合之行 之間的差異。舉例而言,行丨為波束丨、2及3之線性組合且 行2為波束4、5及6之線性組合。項之第三集合可為一矩 陣’其中每一行可為波束之一線性組合。
對於一 SDMA實例而言,可將經界定之波束之第一集合 指向一扇區中之某一方向。為了執行波束之分組,舉例而 5,可將所有波束指向30度角。可將一個扇區劃分為兩個 或兩個以上虛擬扇區,其中將一虛擬扇區内之所有波束分 為組且獨立於第一組將另一虛擬扇區内之所有波束分為 組。此等波束基本上基於其所指向之方向為群集的。因 此,若兩個使用者偏好獨立群集中之波束,且使用者1偏 好群集1中之波束且使用者2偏好群集2中之波束,則SDMA 可用於使用者1及使用者2。允許此等波束重疊。用sDMA 之預編碼可描述為將一使用者指派至一群集中之波束之線 性組合的波束的模式。 圖6B說明一用於增強一無線通信環境中之效能的系統。 用於解釋一使用者偏好之構件610與構件612耦接,構件 612用於讀取一碼薄以確定何模式及特殊向量、或多個向 量、或矩陣或多個矩陣對應於使用者偏好(例如,對應於 包括在使用者偏好中的量化指數)。可藉由將所接收之偏 H428l.doc -23 · 1327423 好與碼薄中之一"V々β 1 〒之項或多項相關聯來執行碼薄的讀 6邮接至構件…以便制特殊向量、或多個向量、= ==:陣來將使用者指派至來自碼薄的特定空間處理 摈式或傳輸模式。 圖7Α說明根據本文所呈現之多個實施例之—用於確定且 報告一(多個)模式或一(多個)傳輸技術之-使用者偏好的 方法700。根據該方法’在方塊而處確定用於一使用者 之一或多個通道特徵。通道特徵可為使用者可用之用於每 _或所有傳輸技術或模式的一或多個cqi及其組 合。此等模式包括SDMA、SDMA預編碼、預編碼、 NOMO-SDMA、MIM〇預編碼、分集模式及/或其類似。此 外,通道特徵可包括傳輸功率偏移、信號強度、其他扇區 干擾資訊’及/或其他通道資訊準則。 在方塊704處’作出應用何模式之確定。舉例而言,該 確定可基於通道特徵。在選擇(多個)模式之後,在7〇6處傳 輸一包括模式的識別符。 如上所述,模式包括SDMA、SDMA預編碼、預編碼、 MIMO-SDMA、ΜΙΜΟ預編碼及/或其類似。為了選擇是否 使用SDMA、SDMA預編碼、預編碼、Mim〇 sdma、 ΜΪΜΟ預編碼、分集模式及/或其類μ,應將某些資訊提供 至基地台《傳輸器。此資訊應不僅傳送選擇且傳送關於利 用何預編碼權重或波束及預編碼權重之資訊。使用者或使 用者裝置在其通道資訊之報告中可包括以下度量中之一者 ^使用何方法與在該方法中利用 114281.doc -24. 1327423 何線性組合。可利用且報告之度量包括用於預編碼之 CQI、用於SDMA之CQI,及/或用於分集模式之CQI。可以 組合之任一集合或彼此排斥之方式報告此等度量。 用於預編碼度量之CQI在將一使用者排程至某一波束(或 ΜΙΜΟ的情況下之矩陣)的情況下擷取通道品質(例如, SINR)。通常,報告對應於最佳波束之cqj連同最佳波束 之指數。為第二最佳波束、第三最佳波束等反饋預編碼 CQI(及指數)可為有益的。 在使用SDMA排程使用者的情況下,用於sdmA度量之 CQI擷取通道品質(例如,siNR) »在假設將使用者排程至 最佳波束的情況下計算信號功率。通常,干擾為兩個量之 總和。第一量為熱干擾與小區内干擾之總和。第二量對應 於歸因於排程至一不同群集中之波束中之一者上的使用者 的干擾。可存在計算此之許多方法且將描述兩個非限制性 實施例(對不利波束及求平均及單個干擾波束)。 對不利波束求平均之模式中,估計歸因於聯合 SDMA(co-SDMA)的干擾。此估計假設可將使用者排程至 一不同群集内之波束中的任一者上且假設將一使用者排程 至一空間群集中。由另一群集產生之干擾量為由屬於彼群 集之波束所形成之干擾的平均。因此,總干擾為歸因於其 他群集之干擾的總和。 在單個干擾波束模式中’ SDMA使用者假設將一特殊波 束指派至一干擾SDMA群集中之一使用者。因此,干擾僅 為來自此一個波束之干擾。經由利用所描述之或其他計 114281.doc 25· 1327423 算,使用者終端機具有信號及干擾已得以計算的可用通道 貝訊。右利用單個干擾波束模式,則可將此連同最佳(信 號傳輸)波束之指數及干擾波束之指數一起反饋。 另一度量為用於分集模式傳輸之CQI。此度量在既不使 用預編碼亦不使用SDMA來排程使用者的情況下擷取通道 °口貝。此度量允許系統提供用於一給定使用者的最小位準 之效能。此處之構思為:僅在預編碼/SDMA (:(^1大於分集 模式CQI的情況下使用預編碼/SDMA。應注意,此(^1報 告含有分集模式資訊之通道的品質。 圖7B說明根據本發明之多個實施例中之一用於確定且報 告一(多個)模式或一(多個)傳輸技術之一使用者偏好的系 統。將用於確定一或多個通道特徵之構件71〇耦接至用於 基於該或該等通道特徵自一碼薄確定一應用模式的構件 712。通道特徵可為使用者可用之用於每一、一些或所有 傳輸技術或模式的一或多個CQI&其組合。此等模式包括 SDMA、SDMA預編碼、預編碼、MIM〇_SDMA、MIM〇預 編碼、分集模式及/或其類似。此外,通道特徵可包括傳 輸功率偏移、信號強度、其他扇區干擾資訊,及/或其他 通道資訊準則。.構件712耦接至用於產生一隨後可傳輸至 進接點之模式識別符的構件7丨4。 圖8說明根據本文所呈現之一或多個實施例之利用所揭 示之技術來增加一無線通信環境中之系統容量的系統 800。熟習此項技術者將瞭解,系統8〇〇可常駐於一基地台 中及/或一使用者裝置中。系統8〇〇包括一接收器8〇2,該 114281.doc • 26 - 1327423 接收 Is 802 自(例如、— 、妁)或多個接收天線接收一信號,且對所 接收之信號執行典型之操作(例如,過渡、放大、降頻轉 換等)且數位化所調節之信號以獲取樣本。一解調器804可 解調所接收之導頻符號且將所接收之導頻符號提供至一處 理器806以用於通道估計。
處理器806可為-專用於分析由接收器8〇2所接收之資訊 及/或產生用於由一傳輸器814傳輸之資訊的處理器。處理 器806可為-控制使用者裝置_之—或多個組件的處理 器,及/或一分析由接收器802接收之資訊、產生用於由一 傳輸器814傳輸之資訊且控制使用者裝置8〇〇之一或多個組 件的處理器》處理器806可經組態以自一碼薄選擇複數個 傳輸模式中之一傳輸模式。使用者裝置8〇〇可包括一協調 波束指派的最佳化器808。可將最佳化器8〇8倂入處理器 8〇6中。應瞭解,最佳化器8〇8可包括用以結合將使用者裝 置指派至波束而執行基於效用之分析的最佳化代碼。最佳
化代碼可利用結合執行干擾之基於人工智慧之方法及/或 結合最佳化使用者裝置波束指派的概率性確定及/或基於 統計之確定。 使用者裝置800可額外地包含記憶體81〇,其可操作地搞 接至處理器806且儲存與波束圖案資訊相關之資訊、包含 與其相關之資訊的查找表,及與本文所描述之波束成形相 關的其他適當資訊。記憶體810可額外地儲存與產生查找 表等相關聯之協定以使得使用者裝置8〇〇可採用所儲存之 協定及/或演算法來增加系統容量。應瞭解,本文所描述 114281.doc -27- 1327423 之資料儲存(例如,記憶體)組件可為揮發性記憶體或非揮 發性記憶體,或可包括揮發性與非揮發性記憶體。為了說 明且並非用於限制,非揮發性記憶體可包括唯讀記憶體 (ROM)、可程式化ROM(PROM)、電子可程式化R_〇M〇EPROM)、 電子可抹除ROM(EEPROM)或快閃記憶體。揮發性記憶體 可包括充當外部快取記憶體之隨機存取記憶體(RAM)。為 了說明且並非用於限制,RAM可以許多形式存在,諸如同 步 RAM(SRAM)、動態 RAM(DRAM)、同步 DRAM(SDRAM)、 雙資料速率 SDRAM(DDR SDRAM)、增強 SDRAM(ESDRAM)、 同步鏈路 DRAM(SLDRAM)及直接 Rambus RAM(DRRAM)。 本系統及方法之記憶體810意欲包含(但不限於)此等及其他 適當類型之記憶體。處理器806連接至一符號調變器812及 傳輸經調變之信號的傳輸器814 » 圖9說明根據多個實施例之利用預編碼及SDMA來增加一 無線通信環境中之系統容量的系統。系統900包含一具有 一接收器910之基地台902,該接收器910經由一或多個接 收天線906自一或多個使用者裝置904接收信號,且經由複 數個傳輸天線908傳輸至一或多個使用者裝置904。在一或 多個實施例中,可使用天線之單個集合來建構接收天線 906及傳輸天線908。接收器910可自接收天線906接收資訊 且可操作地與一解調變所接收之資訊的解調器912相關 聯。如熟習此項技術者將瞭解,接收器910可為(例如)一靶 式接收器(例如,使用複數個基頻相關器來個別地處理多 路徑信號組件的技術等)、一基於MMSE的接收器,或用於 114281.doc -28· 1327423 刀離出丸派至其之使用者裝置的某些其他適當接收器。根 據多個,,可採用多個接收器(例如,每一接收天線一 個接收器),且此等接收器可互相通信以提供使用者資料 之改良估計。&一處理器914分析經解調變之符號,該處 理器914類似於上文參考圖8所描述之處理器且柄接至一記 憶體916,該記憶體916儲存與使用者裝置指派相關之資 訊、與其相關之查找表及其類似。可由接收器91〇及/或處 理器914共同處理用於每__天線之接收器輸出。一調變器 了夕工由傳輸器920經由傳輸天線9〇 8傳輸至使用者 裝置904的信號。 基地台902進一步包含一指派器922,其可為一不同於處 理器914或整合至處理器914的處理器,且其可評估由基地 台904所伺服之一扇區中之所有使用者裝置的一集區,且 可至少部分地基於個別使用者裝置之位置、一預編碼方 案,或一資源共用方案來將使用者裝置指派至波束。 圖10說明根據本文所呈現之多個實施例之一多重進接無 線通信系統1000中的一傳輸器及接收器。為了簡明起見, 無線通信系統1 0 0 0描繪一個基地台及一個使用者裝置。然 而,應瞭解,系統可包括一個以上基地台及/或一個以上 使用者裝置’其中額外之基地台及/或使用者裝置可大體 上類似於或不同於下文所描述之例示性基地台及使用者裝 置。此外,應瞭解,基地台及/或使用者裝置可採用本文 所描述之系統及/或方法來促進其間的無線通信。 在一傳輸器系統1010處,將用於若干資料流之訊務資料 114281.doc -29- 1327423 自一資料源1012提供至一傳輸(τχ)資料處理器1〇14。在一 些實施例中,在各自之傳輸天線上傳輸每一資料流。τχ 資料處理器1014基於一經選擇之用於彼資料流之特定編碼 方案來格式化、編碼且交錯用於每一資料流之訊務資料以 提供編碼資料。在一些實施例中,Τχ資料處理器1〇14基 於符號傳輸至之使用者及自其傳輸符號之天線將波束成形 權重應用至資料流的符號。在一些實施例中,可基於指示 進接點與進接終端機之間之傳輸路徑的條件的通道響應資 訊來產生波束成形權重。可利用CQI資訊或由使用者提供 之通道估計來產生通道響應資訊。此外,在所排程之傳輸 之彼等情況下,ΤΧ資料處理器1014可基於自使用者傳輸 之等級資訊來選擇封包格式。 可使用OFDM技術來用導頻資料多工每一資料流之經編 碼之資料。導頻資料通常為一已知之資料圖案,該資料圖 案係以一已知方式處理且可用於接收器系統處以估計通道 響應。接著,基於所選定之用於彼資料流之一特定調變方 案(例如,BPSK、QSPK、M-PSK或M-QAM)來調變(例如, 符號映射)每一資料流之經多工之導頻資料及經編碼之資 料以提供調變符號。可由處理器1030所執行或提供之指令 來確定每一資料流之資料速率、編碼及調變。在一些實施 例中,可根據自使用者傳輸之等級資訊來改變平行空間流 的數目。 將資料流之經調變之符號提供至一 ΤΧ ΜΙΜΟ處理器 1020,其可進一步處理調變符號(例如,用於OFDM)。ΤΧ 114281.doc -30· 1327423 ΜΙΜΟ處理器1020將NT符號流提供至NT傳輸器 (TMTR)1022a至1022t。在一些實施例中,τχ ΜΙΜΟ處理 器1020基於符號傳輸至之使用者及自其傳輸來自使用者通 道響應資訊之符號的天線來將波束成形權重應用至資料流 的符號。 每一傳輸器1022接收且處理各自之符號流以提供一或多 個類比彳s號’且進一步調郎(例如,放大、過瀘、及升頻轉 換)類比信號以提供適用於在ΜΙΜΟ通道上傳輸之經調變之 L號。分別自NT天線1024a至l〇24t傳輸來自傳輸器i〇22a 至1022t之NT調變信號。 在接收器系統1050處,由NR天線i〇52a至1052r接收經傳 輸之調變信號且將來自每、一天線1〇5 2之所接收之信號提供 至各自之接收器(RCVR)1054。每一接收器1〇54調節(例 如’過濾、放大及降頻轉換)一各自之接收信號,數位化 經調節之信號以提供樣本’且進一步處理該等樣本以提供 一對應之"接收"符號流。 一 RX資料處理器1060隨後基於一特定之接收器處理技 術接收且處理來自NR接收器1054之NR接收符號流以提 供’’偵測"符號流之等級數目。下面更詳細描述由Rx資料處 理器1060之處理《每一偵測符號流包括為對應資料流傳輸 之調變符號之估計的符號。RX資料處理器1〇6〇隨後解調 變、解交錯且解碼每一偵測符號流以恢復資料流之訊務資 料。由RX資料處理器1060之處理與傳輸器系統1〇1〇處丁乂 ΜΙΜΟ處理器1020及τχ資料處理器1〇14所執行之處理互 114281.doc -31 · 1327423 補。 由RX處理器1060所產生之通道響應估計可用以執行接 收器處的空間、空間/時間處理,調整功率位準,改變調 變速率或方案’或其他操作。RX處理器1〇6〇可進一步估 計偵測符號流之信號對雜訊及干擾比(SNR),及可能之其 他通道特徵,且將此等量提供至處理器1〇7〇。RX資料處 理器1060或處理器1070可進一步導出用於系統之”有效" SNR之估計。處理器1070隨後提供經估計之通道資訊 (CSI),其可包含關於通信鏈路及/或所接收之資料流的各 種類型之資訊。舉例而言,CSI可僅包含操作SNR。隨後 由一亦自一資料源1076接收用於一定數目個資料流之訊務 資料的TX資料處理器1078處理CSI,由一調變器1〇80調變 CSI ’由傳輸器l〇54a至10541調節CSI,且傳輸回傳輸器系 統 1010。 在傳輸器系統10 10處’來自接收器系統1〇50之經調變之 信號係由天線1024接收’由接收器1022調節,由一解調器 1040解調變’且由一 rx資料處理器1〇42處理以恢復接收 器系統所報告之CSI。隨後將所報告之CSI提供至處理器 1030且用於:(1)確定待用於資料流之資料速率以及編碼及 調變方案’及(2)產生用於TX資料處理器1〇14及ΤΧ ΜΙΜΟ 處理器1020的各種控制。 在接收器處,各種處理技術可用於處理NR接收信號以 偵測NT傳輸符號流。可將此等接收器處理技術分組為兩 個主要種類:(i)空間及空間·時間接收器處理技術(其亦稱 114281.doc -32- 1327423 為均衡技術);及(π)"連續零值/均衡及干擾消除"接收器處 理技術(其亦稱為"連續干擾消除"或"連續消除"接收器處理 技術)。 可將由NT傳輸天線及NR接收天線形成之ΜΙΜΟ通道分 解為Ns個獨立通道,其中為}。Ns個獨立通道中 之每一者亦可稱為ΜΙΜΟ通道之空間子通道(或傳輸通道) 且對應於一維度。 應理解’本文所描述之實施例可由硬體、軟體、韌體、 中間軟體、微碼,或其任何組合來實施。對於硬體實施而 言’一進接點或一進接終端機内之處理單元可實施於一個 或多個特殊應用積體電路(ASIC)、數位訊號處理器 (DSP)、數位訊號處理裝置(DSpD)、可程式化邏輯裝置 (PLD)、場可程式化閘陣列(FpGA)、處理器、控制器、微 控器、微處理器、經設計以執行本文所述功能的其他電子 單元或其組合。 當以軟體、韌體、中間軟體或微碼、程式碼或碼段中實 施實施例時,軟體、韌體、中間軟體或微碼、程式碼或碼 段可儲存於一機器可讀取媒體(諸如一儲存器組件)中。一 碼段可表示-程序、—函數…子程式、__程式、一常 式、一子常式 ' —模組、一軟體封包、一類,或指令資 料結f或程式語句之任何組合。可藉由傳遞及/或接收資 訊、貝料、引數'參數或記憶體内容來將一碼段耦接至另 -瑪段或-硬體電路。使用包括記憶體共用、訊息傳遞、 符記網路傳輸等之任何適當方法來傳遞、轉發或傳 114281.doc •33- 輪資訊、引數、參數、資料等。 對於軟體實施而言,可利用執行本文所述功能的模組 (例如’程序、函數等)來實施本文所述技術。軟體程式碼 可儲存於記憶體單元中且由處理器來執行1憶體單元可 建構於處理H㈣或處理器外部’在處於處理器外部的情 況下記憶體單元可經由如此項技術中已知之各種方法通信 地鶴接至處理器。 上文已描述的内容包括—或多個實施例的實例以使得熟 習此項技術者能夠進行或使用本文所揭示之特徵、功能、 操作及實施例。备$ ,出於描述前述實施例之目的不能描 述組件或方法之每一可想像之組合,但熟習此項技術者可 認識到多個實施例之許多其他組合及排列為可行的。因 此所描述之實施例意欲包含屬於所附申請專利S圍之精 神及㈣的所有此等替代、修改及變化。此外,就用於實 施方式或申請專利範圍中的術語"包括”而言,此術語意欲 以類似於術語"包含,,用作申請專利範圍中之一轉折語時所 解釋之方式理解為非排他性的。 【圖式簡單說明】 圖1說明根據本文所呈現之多個實施例之—無線通信系 統 圖2說明根據多個實施例之—多重進接無線通信系統。 圖3說明㈣本文所呈現之-或多個實施例之-無線通 信系統。 圖4說明用於一利用所揭示之改良無線環境中之通信的 114281.doc -34 - 1327423 技術之扇區的波束圖案。 圖5說明根據多個實施例的功能區塊。 圖6A說明一用於增強一無線通信環境中之效能的方法。 圖6B說明一用於增強一無線通信環境中之效能的系統。 圖7A說明根據本文所呈現之多個實施例之用於確定且報 告一(多個)模式或一(多個)傳輸技術之一使用者的偏好的 方法。 圖7B說明根據本文所呈現之多個實施例之用於確定且報
告一(多個)模式或一(多個)傳輸技術的一使用者的偏好的 系統。 圖8說明根據本文所呈現之一或多個實施例之利用所揭 示之技術來增加一無線通信環境中之系統容量的系統。 圖9說明根據多個實施例之利用預編碼及sdMA來增加一 無線通信環境中之系統容量的系統。
圖10說明根據本文所呈現之多個實施例之一多重進接無 線通信系統中的一傳輸器及接收器。 【主要元件符號說明】 100 無線通信系統 102 行動裝置 104 基地台 106 碼薄 200 多重進接無線通信系統 202 小區 204 小區 114281.doc -35· 1327423
206 小區 212 天線群 214 天線群 216 天線群 218 天線群 220 天線群 222 天線群 224 天線群 226 天線群 228 天線群 230 進接終端機 232 進接終端機 234 進接終端機 236 進接終端機 238 進接終端機 240 進接終端機 242 基地台或進接點 244 進接點 246 進接點 250 進接點 300 無線通信系統 302 三扇區基地台 304 天線 306 天線 114281.doc -36· 1327423
308 天線 310 天線 312 天線 314 天線 316 行動裝置 318 正向鍵路 320 反向鏈路 322 行動裝置 324 正向鍵路 326 反向鍵路 400 波束圖案 402 扇區 404 波束 406 進接點 500 系統 502 波束產生器 504 指派1§ 506 排程器 508 通信器 610 構件 612 構件 614 構件 710 構件 712 構件 114281.doc -37- 1327423
714 構件 800 系統 802 接收器 804 解調器 806 處理器 808 最佳化器 810 記憶體 812 符號調變器 814 傳輸器 900 系統 902 基地台 904 使用者裝置 906 接收天線 908 傳輸天線 910 接收器 912 解調器 914 處理器 916 記憶體 918 調變器 920 傳輸器 922 指派器 1000 無線通信系統 1010 傳輸器系統 1012 資料源 114281.doc -38- 1327423
1014 傳輸(TX)資料處理器 1020 TX ΜΙΜΟ處理器 1022a NT傳輸器(TMTR) 1022t NT傳輸器(TMTR) 1024a NT天線 1024t NT天線 1030 處理器 1040 解調器 1042 RX資料處理器 1050 接收器系統 1052a NR天線 1052r NR天線 1054a 傳輸器 1054r 傳輸器 1060 RX資料處理器 1070 處理器 1076 資料源 1078 TX資料處理器 1080 調變器 114281.doc 39-
Claims (1)
1327423 第095131897號專利申請案 • 令文申請專利範圍替換本(99年2月) 十、申請專利範圍: 一種用於增強一 含: 無線通信環境中 之效能的方法 其包 接收用於一傳輸模式之一使用者偏好; 將該使用麵好與—碼料之至少—項相關聯;及 將該使用者指派至該對應於至少—項之傳輪模式,並包 於預:碼、分空間多重進接(SDMa)、sdm_編碼、 多輸入多輸味細)' 聰〇預編碼、mim〇 sdm 一分集。 2·如請求項1之方法’其中將該㈣者偏好與該碼薄中之 2 一項相«包含絲該㈣㈣定對應於該使用者 之模式及至少一個向量或至少一個矩陣。 3. 如明求項1之方法’其中每一項對應於一傳輸模式。 4. 如請求項【之方法’其中該接收之使用者偏好包含以下 各者中之至少―者:識別該傳輸模式之-偏好、一通道 品質指示符(CQI)、多個模式連同用於該多個模式中之至 少一者的相關CQI,及用於至少兩傳輸模式中 之間的差異。 以 種確疋-傳輸模式之—使用者之偏好的方法,其包 含: z、 確定一使用者之通道特徵; 自瑪薄選擇至少一傳輪模式來應用其中該碼薄包括 用於至^冑輪模式之若干項,該等傳輸模式包括:預 編碼、分空間彡重進接(SDMA)、s祕預編碼、多輸入多 114281-990224.doc 輪出(MIMO-SDMA)、ΜΙΜΟ預編碼及一分集;及 傳輪選定之該至少一傳輸模式的一識別符。 6·如請求項5之方法,其中確定該使用者之通道特徵包含 利用一CQI、功率偏移、信號強度或其他扇區干擾資訊 中之至少一者。 °
8. 一個度 之至少 或用於 如清求項5之方法,其中該通道資訊包含至少 里,其用於選擇該至少一傳輸模式來應用。 如請求項7之方法’其中該度量包含以下各者中 者.—用於預編碼的CQI、用於SMDA之CQI, 分集模式的CQI。 種無線通信裝置,其包含: 處理器,其經組態以自一碼薄選擇複數個傳輸模式 中之-傳輸模式,其中該碼薄包括用於複數個傳輸模式 之項’該等傳輸模式包括:預編碼、Μ間多重進接 (SDMA)、SDMA預編碼、多輸入多輸出(ΜΙΜΟ)、Μιμ〇 預編碼、mimo-sdma及一分集;及 A ’IS體’其與該處理器耦接。 吻求項9之無線通信裝置,其令該碼薄中之每 應於一傳輸模式》 、 lh 之無線通信裝置’其t該處理器在該無線通 12 :二、於不同基地台間移動時自動地進接-不同碼薄。 •吻求項9之無線通信裝置,其中該處@ g ^ & 涊處理态在該無線通 。、置於不同基地台間 擇一傳輸模式〆不同碼薄以自其選 11428J-990224.doc 1327423 13. —種無線通信裝置,其包含: 用於處理-用於-傳輸模式之接收之使用者偏好的構 件; 用於將該使用者偏好與一碼薄中之一項相關聯的構 件,其中該項包括預編碼、分空間多重進接(sdma)、 SDMA預編碼、多輸人多輸出(MIM〇)、MlM〇預編碼、 MIMO-SDMA及一分集;及 用於將該使用者指派至該對應於該項之傳輸模式的構 件》 14. 如請求項13之無線通信$置,纟中每一項對應於一傳輪 模式。 15. —種無線通信裝置,其包含: 用於確定一使用者之一通道特徵的構件; 用於自一碼薄選擇一傳輸模式來應用的構件,其中該 碼薄包括用於傳輸模式之若干項,該等傳輸模式包括預 編碼、分空間多重進接(SDMA)、SDMA預編碼、多輸入 多輸出(ΜΙΜΟ)、ΜΙΜΟ預編碼、MIM〇_SDMA及一分 集,及 用於傳輸選定之該傳輸模式的一識別符的構件。 16. 如請求項15之無線通信裝置,其中該用於確定該使用者 之該通道特徵的構件包含利用一 CQI、功率偏移、信號 強度或其他扇區干擾資訊之至少一者。 17. —種電腦可讀取媒體,其包括儲存於其上之指令,該電 腦可讀取媒體包含: 114281-990224.doc 1327423 用於處理一用於一傳輸模式之接收之使用者偏好的指 令; 用於將該使用者偏好與一碼薄中之一項相關聯的指 令,其中該項包括預編碼、分空間多重進接(SDMA)、 SDMA預編碼、多輸入多輸出(ΜΙΜΟ)、MIM◦預編碼、 MIMO-SDMA及一分集;及 用於將該使用者指派至該對應於該項之傳輸模式的指 令〇 114281-990224.doc
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71302905P | 2005-08-30 | 2005-08-30 | |
US73101405P | 2005-10-27 | 2005-10-27 | |
US11/401,979 US9136974B2 (en) | 2005-08-30 | 2006-04-10 | Precoding and SDMA support |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200718073A TW200718073A (en) | 2007-05-01 |
TWI327423B true TWI327423B (en) | 2010-07-11 |
Family
ID=37603091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW095131897A TWI327423B (en) | 2005-08-30 | 2006-08-30 | Precoding and sdma support |
Country Status (15)
Country | Link |
---|---|
US (1) | US9136974B2 (zh) |
EP (2) | EP2978156A1 (zh) |
JP (2) | JP5377963B2 (zh) |
KR (2) | KR20080041291A (zh) |
CN (1) | CN101297514B (zh) |
AR (1) | AR055623A1 (zh) |
AU (1) | AU2006284814B2 (zh) |
BR (1) | BRPI0615589A2 (zh) |
CA (1) | CA2620610C (zh) |
IL (1) | IL189702A0 (zh) |
MX (1) | MX2008002773A (zh) |
NO (1) | NO20081223L (zh) |
NZ (1) | NZ566254A (zh) |
TW (1) | TWI327423B (zh) |
WO (1) | WO2007027825A2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI562575B (zh) * | 2011-06-24 | 2016-12-11 | Sun Patent Trust |
Families Citing this family (171)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US11394436B2 (en) | 2004-04-02 | 2022-07-19 | Rearden, Llc | System and method for distributed antenna wireless communications |
US10886979B2 (en) | 2004-04-02 | 2021-01-05 | Rearden, Llc | System and method for link adaptation in DIDO multicarrier systems |
US8542763B2 (en) | 2004-04-02 | 2013-09-24 | Rearden, Llc | Systems and methods to coordinate transmissions in distributed wireless systems via user clustering |
US9819403B2 (en) | 2004-04-02 | 2017-11-14 | Rearden, Llc | System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client |
US11309943B2 (en) | 2004-04-02 | 2022-04-19 | Rearden, Llc | System and methods for planned evolution and obsolescence of multiuser spectrum |
US9826537B2 (en) | 2004-04-02 | 2017-11-21 | Rearden, Llc | System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters |
US10277290B2 (en) | 2004-04-02 | 2019-04-30 | Rearden, Llc | Systems and methods to exploit areas of coherence in wireless systems |
US8654815B1 (en) | 2004-04-02 | 2014-02-18 | Rearden, Llc | System and method for distributed antenna wireless communications |
US10985811B2 (en) | 2004-04-02 | 2021-04-20 | Rearden, Llc | System and method for distributed antenna wireless communications |
US10425134B2 (en) | 2004-04-02 | 2019-09-24 | Rearden, Llc | System and methods for planned evolution and obsolescence of multiuser spectrum |
US10200094B2 (en) | 2004-04-02 | 2019-02-05 | Rearden, Llc | Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems |
US9312929B2 (en) | 2004-04-02 | 2016-04-12 | Rearden, Llc | System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS) |
US11451275B2 (en) | 2004-04-02 | 2022-09-20 | Rearden, Llc | System and method for distributed antenna wireless communications |
US10749582B2 (en) | 2004-04-02 | 2020-08-18 | Rearden, Llc | Systems and methods to coordinate transmissions in distributed wireless systems via user clustering |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9685997B2 (en) | 2007-08-20 | 2017-06-20 | Rearden, Llc | Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems |
US8396153B1 (en) | 2004-12-07 | 2013-03-12 | Adaptix, Inc. | Cooperative MIMO in multicell wireless networks |
US7428268B2 (en) * | 2004-12-07 | 2008-09-23 | Adaptix, Inc. | Cooperative MIMO in multicell wireless networks |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US9520972B2 (en) | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9461859B2 (en) | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
US8644292B2 (en) | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
KR100831177B1 (ko) * | 2005-10-08 | 2008-05-21 | 삼성전자주식회사 | 스마트 안테나 통신시스템의 송신기 및 송신 방법 |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9088384B2 (en) * | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US8594207B2 (en) | 2005-10-31 | 2013-11-26 | Motorola Mobility Llc | Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system |
EP1784032A1 (en) * | 2005-11-04 | 2007-05-09 | Alcatel Lucent | Method for performing user allocation in SDMA systems, and corresponding base station |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
KR101345868B1 (ko) * | 2006-05-09 | 2014-01-15 | 인터디지탈 테크날러지 코포레이션 | 범용 지상 무선 액세스를 위한 가변 피드백 |
US7839835B2 (en) * | 2006-08-22 | 2010-11-23 | Nec Laboratories America, Inc. | Quantized precoding over a set of parallel channels |
US7961640B2 (en) * | 2006-10-26 | 2011-06-14 | Qualcomm Incorporated | Method and apparatus for codebook exchange in a multiple access wireless communication system |
WO2008049366A1 (fr) * | 2006-10-26 | 2008-05-02 | Huawei Technologies Co., Ltd. | Procédé de construction d'un répertoire d'accès sdma et appareil se rapportant à celui-ci et procédé de programmation et appareil et système se rapportant à celui-ci |
SG177972A1 (en) | 2007-01-12 | 2012-02-28 | Ericsson Telefon Ab L M | Method and arrangement in a wireless communications system |
US8462646B2 (en) * | 2007-02-09 | 2013-06-11 | Telecom Italia S.P.A. | Characterization of co-channel interference in a wireless communication system |
US7787836B2 (en) * | 2007-03-12 | 2010-08-31 | Intel Corporation | Multiple radios communication device and a method thereof |
KR101285595B1 (ko) | 2007-03-16 | 2013-07-15 | 퍼듀 리서치 파운데이션 | 다중 입출력 시스템을 위한 프리코딩 행렬 코드북 생성장치 및 그 방법 |
US8831116B2 (en) | 2007-03-20 | 2014-09-09 | Motorola Mobility Llc | Method and apparatus for providing channel quality and precoding metric feedback in an orthogonal frequency division multiplexing communication system |
WO2008115036A1 (en) * | 2007-03-21 | 2008-09-25 | Lg Electronics Inc. | Method of transmitting codebook index in wireless communication system |
KR101382760B1 (ko) * | 2007-03-21 | 2014-04-08 | 엘지전자 주식회사 | 다중 안테나를 이용한 통신시스템에서 코드북을 이용한데이터 전송방법 |
EP3444969B1 (en) | 2007-03-22 | 2020-02-19 | Marvell World Trade Ltd. | Variable codebook for mimo system |
CN101669297B (zh) * | 2007-04-29 | 2013-02-27 | 华为技术有限公司 | 管理控制信息的方法和系统 |
US7706323B2 (en) * | 2007-05-02 | 2010-04-27 | Alvarion Ltd. | Wireless communications in a multi-sector network |
JP5361870B2 (ja) * | 2007-05-10 | 2013-12-04 | アルカテル−ルーセント | 複数入力通信システムにおいて送信されるデータを事前処理するための方法及び装置 |
US7649831B2 (en) | 2007-05-30 | 2010-01-19 | Samsung Electronics Co., Ltd. | Multi-user MIMO feedback and transmission in a wireless communication system |
US20080316935A1 (en) * | 2007-06-19 | 2008-12-25 | Interdigital Technology Corporation | Generating a node-b codebook |
CN101335910B (zh) * | 2007-06-29 | 2012-02-29 | 中国移动通信集团公司 | 智能天线与多输入多输出天线的复用天线系统和方法 |
KR100980647B1 (ko) | 2007-07-05 | 2010-09-07 | 삼성전자주식회사 | 다중 안테나 시스템에서 간섭 제거 장치 및 방법 |
US8462716B1 (en) | 2007-07-11 | 2013-06-11 | Marvell International Ltd. | Method and apparatus for using multiple codebooks for wireless transmission to a plurality of users in a cell |
US7995528B1 (en) * | 2007-07-18 | 2011-08-09 | Marvell International Ltd. | Precoding with multi-user codebooks |
US8982779B2 (en) | 2007-07-16 | 2015-03-17 | Blackberry Limited | Providing space division multiple access in a wireless network |
EP2017973A1 (en) * | 2007-07-20 | 2009-01-21 | Lucent Technologies Inc. | Method and apparatuses for selecting a subchannels subset in wireless communications network using relays |
CN101355381A (zh) * | 2007-07-24 | 2009-01-28 | 株式会社Ntt都科摩 | 基于信道向量量化的调度和预编码方法及装置 |
US8009617B2 (en) * | 2007-08-15 | 2011-08-30 | Qualcomm Incorporated | Beamforming of control information in a wireless communication system |
US8699429B2 (en) | 2007-08-31 | 2014-04-15 | Fujitsu Limited | Wireless communication system and wireless communication method |
WO2009051748A2 (en) * | 2007-10-15 | 2009-04-23 | Marvell World Trade Ltd. | Beamforming using predefined spatial mapping matrices |
CN101442349B (zh) * | 2007-11-21 | 2013-02-20 | 三星电子株式会社 | 多用户mimo码本子集选择方法 |
US8228809B1 (en) * | 2007-12-21 | 2012-07-24 | Adaptix, Inc. | Intelligent mode switching in communication networks |
WO2009107090A1 (en) * | 2008-02-26 | 2009-09-03 | Nxp B.V. | Limited channel information feedback error-free channel vector quantization scheme for precoding mu-mimo |
US8274930B2 (en) * | 2008-03-10 | 2012-09-25 | Mitsubishi Electric Research Laboratories, Inc. | Analog beamforming to reduce interference in WiMAX networks |
KR101704984B1 (ko) | 2008-05-09 | 2017-02-08 | 애플 인크. | 셀룰러 네트워크에서의 안테나 빔 형성을 지원하기 위한 시스템 및 방법 |
US8140098B2 (en) * | 2008-05-15 | 2012-03-20 | Qualcomm Incorporated | Spatial interference mitigation for wireless communication |
US8249511B2 (en) * | 2008-06-25 | 2012-08-21 | Samsung Electronics Co., Ltd. | Downlink wireless transmission schemes with inter-cell interference mitigation |
US8743793B2 (en) * | 2008-07-14 | 2014-06-03 | Qualcomm Incorporated | Systems and methods for providing a separate contention window allowing allocations for pending uplink SDMA transmission opportunities |
US8731077B2 (en) * | 2008-08-08 | 2014-05-20 | Sharp Kabushiki Kaisha | Wireless communication system, control station apparatus and terminal apparatus |
US9294160B2 (en) * | 2008-08-11 | 2016-03-22 | Qualcomm Incorporated | Method and apparatus for supporting distributed MIMO in a wireless communication system |
KR101495824B1 (ko) * | 2008-08-22 | 2015-02-25 | 삼성전자주식회사 | 다중 안테나 무선통신 시스템에서 프리코딩 행렬 선택 방법및 장치 |
US8676133B2 (en) * | 2008-09-19 | 2014-03-18 | Qualcomm Incorporated | Reference signal design for LTE A |
US8654705B2 (en) * | 2008-10-24 | 2014-02-18 | Qualcomm Incorporated | System and method for supporting multiple reverse link data streams |
US8654715B2 (en) * | 2008-10-24 | 2014-02-18 | Qualcomm Incorporated | Systems and methods providing mobile transmit diversity |
US8396162B2 (en) * | 2008-11-03 | 2013-03-12 | Motorola Mobility Llc | Method and apparatus for choosing a modulation and coding rate in a multi-user, MIMO communication system |
US8582678B2 (en) * | 2008-12-12 | 2013-11-12 | Electronics And Telecommunications Research Institute | Communication system using multi-user multiple input multiple output (MU-MIMO) communication scheme |
EP2374222B1 (en) * | 2008-12-22 | 2012-08-29 | Telefonaktiebolaget L M Ericsson (publ) | Wireless communication system and method for communication between nodes |
US8503572B2 (en) | 2009-02-02 | 2013-08-06 | Qualcomm Incorporated | Antenna virtualization in a wireless communication environment |
US8923215B2 (en) * | 2009-02-27 | 2014-12-30 | Qualcomm Incorporated | Method and apparatus for scheduling transmissions in spatial division multiple access network systems |
US8325843B2 (en) | 2009-04-08 | 2012-12-04 | Lg Electronics Inc. | MIMO codebook generation |
CN101877609B (zh) * | 2009-04-30 | 2013-06-12 | 富士通株式会社 | 通信装置、基站和多点合作通信方法 |
US8565153B2 (en) * | 2009-05-19 | 2013-10-22 | Qualcomm Incorporated | Dynamic switching between MIMO and DC HSDPA |
US9137802B2 (en) * | 2009-08-18 | 2015-09-15 | Qualcomm Incorporated | DL MU-MIMO operation in LTE-A |
CN102045095B (zh) * | 2009-10-21 | 2014-10-29 | 中兴通讯股份有限公司 | 一种预编码处理方法及装置 |
US8761086B2 (en) | 2009-11-02 | 2014-06-24 | Qualcomm Incorporated | Method and apparatus for hierarchical codebook design in wireless communication |
US8477690B2 (en) * | 2009-11-06 | 2013-07-02 | Intel Corporation | Location determination in wireless communication systems |
US9312930B2 (en) | 2009-12-25 | 2016-04-12 | France Telecom | Telecommunication transmission method and system |
ES2376217B8 (es) * | 2010-03-29 | 2013-02-19 | Vodafone España, S.A.U | Método y elemento de red en una red de telecomunicaciones celulares para mejorar el rendimiento de la red. |
EP3975439A1 (en) * | 2010-04-19 | 2022-03-30 | Samsung Electronics Co., Ltd. | Method and system for multi-user transmit opportunity for multi-user multiple-input-multiple-output wireless networks |
CN101908915B (zh) | 2010-07-19 | 2013-08-07 | 华为技术有限公司 | 信号传输方法、装置和基站 |
CN102387593B (zh) * | 2010-09-06 | 2014-05-07 | 电信科学技术研究院 | 一种采用空分复用接入sdma的通信方法及基站 |
CN102448050B (zh) * | 2010-09-30 | 2015-01-21 | 华为技术有限公司 | 确定给用户配置的模式的方法和网络设备 |
US8908600B2 (en) | 2010-10-26 | 2014-12-09 | Qualcomm Incorporated | Channel state information feedback frame format and feedback rules for very high throughput wireless systems |
US9130631B2 (en) | 2010-11-03 | 2015-09-08 | Qualcomm Incorporated | Beamforming feedback format |
CN102624497B (zh) * | 2011-01-30 | 2016-05-25 | 华为技术有限公司 | 码本生成方式的确定方法和装置 |
US9369885B2 (en) * | 2011-04-12 | 2016-06-14 | Qualcomm Incorporated | Method and apparatus for selecting reference signal tones for decoding a channel |
CN102932776B (zh) * | 2011-08-09 | 2017-05-10 | 中兴通讯股份有限公司 | Hspa演进特性的配置方法和装置 |
WO2013036091A2 (en) * | 2011-09-09 | 2013-03-14 | Samsung Electronics Co., Ltd. | Method and apparatus for opportunistic user scheduling of two-cell multiple user mimo |
KR101873596B1 (ko) * | 2012-01-16 | 2018-08-02 | 삼성전자주식회사 | 무선통신 시스템에서 데이터 송신 방법 및 장치 |
US20130229309A1 (en) * | 2012-03-01 | 2013-09-05 | Nokia Siemens Networks Oy | Beam alignment method utilizing omni-directional sounding and use thereof |
AU2013297246B2 (en) * | 2012-07-31 | 2016-11-10 | Samsung Electronics Co., Ltd. | Communication method and device using beamforming in wireless communication system |
US11189917B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for distributing radioheads |
US10194346B2 (en) | 2012-11-26 | 2019-01-29 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US11190947B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for concurrent spectrum usage within actively used spectrum |
US11050468B2 (en) | 2014-04-16 | 2021-06-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
US10164698B2 (en) | 2013-03-12 | 2018-12-25 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US9973246B2 (en) | 2013-03-12 | 2018-05-15 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US10488535B2 (en) | 2013-03-12 | 2019-11-26 | Rearden, Llc | Apparatus and method for capturing still images and video using diffraction coded imaging techniques |
US9923657B2 (en) | 2013-03-12 | 2018-03-20 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US10547358B2 (en) | 2013-03-15 | 2020-01-28 | Rearden, Llc | Systems and methods for radio frequency calibration exploiting channel reciprocity in distributed input distributed output wireless communications |
US10320459B2 (en) * | 2013-04-10 | 2019-06-11 | Marvell World Trade Ltd. | Method and apparatus for mitigating interference in a wireless network through use of transmit beamforming |
KR102048880B1 (ko) * | 2013-04-29 | 2019-11-26 | 삼성전자주식회사 | 다단 빔포밍 시스템을 위한 통신 방법 및 장치 |
KR102160008B1 (ko) * | 2013-06-17 | 2020-09-25 | 삼성전자 주식회사 | 채널 상태 정보 송수신 방법 및 장치 |
KR102097295B1 (ko) * | 2013-07-26 | 2020-04-06 | 한국전자통신연구원 | 다중 입력 다중 출력 통신 시스템의 부호화 장치 및 방법 |
WO2015034503A1 (en) * | 2013-09-05 | 2015-03-12 | Intel Corporation | Adaptive sectorization of a spational region for parallel multi-user transmissions |
US9451625B2 (en) * | 2013-09-19 | 2016-09-20 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for providing interference characteristics for interference mitigation |
WO2015042849A1 (zh) | 2013-09-27 | 2015-04-02 | 华为技术有限公司 | 一种数据传输方法和装置 |
US20150117372A1 (en) * | 2013-10-31 | 2015-04-30 | Telefonaktiebolaget L M Ericsson (Publ) | Assignment of radio resources to be used on downlink transmissions in a multiple input multiple output (mimo) communication system |
CN104683079B (zh) * | 2013-11-26 | 2018-05-11 | 深圳市海思半导体有限公司 | 传输模式切换方法及设备 |
US11290162B2 (en) | 2014-04-16 | 2022-03-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
US20160135090A1 (en) * | 2014-11-07 | 2016-05-12 | Qualcomm Incorporated | Millimeter wavelength base station beamforming technique advertising and efficient user equipment transmission strategy |
US10863474B2 (en) * | 2016-10-21 | 2020-12-08 | Qualcomm Incorporated | Millimeter-wavelength network map for use in a beamforming procedure |
US10250312B2 (en) * | 2016-11-23 | 2019-04-02 | Huawei Technologies Canada Co., Ltd. | Methods and systems for multi-user beamforming |
CN106658590B (zh) * | 2016-12-28 | 2023-08-01 | 南京航空航天大学 | 基于WiFi信道状态信息多人室内环境状态监控系统的设计与实现 |
EP3563491A1 (en) * | 2016-12-29 | 2019-11-06 | Koninklijke KPN N.V. | Methods for controlling an antenna system, transmitting an indicator, a computer system and wireless terminal |
WO2019228652A1 (en) * | 2018-06-01 | 2019-12-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Approaches for beam selection |
CN111082838B (zh) | 2018-10-18 | 2022-04-05 | 慧与发展有限责任合伙企业 | 自动选择码本 |
US10659112B1 (en) | 2018-11-05 | 2020-05-19 | XCOM Labs, Inc. | User equipment assisted multiple-input multiple-output downlink configuration |
US10812216B2 (en) | 2018-11-05 | 2020-10-20 | XCOM Labs, Inc. | Cooperative multiple-input multiple-output downlink scheduling |
US10432272B1 (en) | 2018-11-05 | 2019-10-01 | XCOM Labs, Inc. | Variable multiple-input multiple-output downlink user equipment |
US10756860B2 (en) | 2018-11-05 | 2020-08-25 | XCOM Labs, Inc. | Distributed multiple-input multiple-output downlink configuration |
EP3888256A4 (en) | 2018-11-27 | 2022-08-31 | Xcom Labs, Inc. | MULTIPLE INPUT AND INCOHERENT COOPERATIVE MULTIPLE OUTPUT COMMUNICATIONS |
WO2020108777A1 (en) | 2018-11-30 | 2020-06-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Approaches for beam selection |
US11063645B2 (en) | 2018-12-18 | 2021-07-13 | XCOM Labs, Inc. | Methods of wirelessly communicating with a group of devices |
US10756795B2 (en) | 2018-12-18 | 2020-08-25 | XCOM Labs, Inc. | User equipment with cellular link and peer-to-peer link |
CN111385005B (zh) * | 2018-12-29 | 2021-10-26 | 华为技术有限公司 | 用于构建预编码向量的向量指示方法以及通信装置 |
WO2020135101A1 (zh) | 2018-12-29 | 2020-07-02 | 华为技术有限公司 | 用于构建预编码向量的向量指示方法以及通信装置 |
US11330649B2 (en) | 2019-01-25 | 2022-05-10 | XCOM Labs, Inc. | Methods and systems of multi-link peer-to-peer communications |
US10756767B1 (en) | 2019-02-05 | 2020-08-25 | XCOM Labs, Inc. | User equipment for wirelessly communicating cellular signal with another user equipment |
JP2022525555A (ja) | 2019-03-21 | 2022-05-17 | マーベル アジア ピーティーイー、リミテッド | 複数のアクセスポイントを有する協調マルチユーザ伝送 |
US10756782B1 (en) | 2019-04-26 | 2020-08-25 | XCOM Labs, Inc. | Uplink active set management for multiple-input multiple-output communications |
US11032841B2 (en) | 2019-04-26 | 2021-06-08 | XCOM Labs, Inc. | Downlink active set management for multiple-input multiple-output communications |
US10735057B1 (en) | 2019-04-29 | 2020-08-04 | XCOM Labs, Inc. | Uplink user equipment selection |
US10686502B1 (en) | 2019-04-29 | 2020-06-16 | XCOM Labs, Inc. | Downlink user equipment selection |
US11411778B2 (en) | 2019-07-12 | 2022-08-09 | XCOM Labs, Inc. | Time-division duplex multiple input multiple output calibration |
CN111132334A (zh) * | 2019-12-13 | 2020-05-08 | 广东工业大学 | 一种基于谐波调制技术的空分多址通信方法 |
US11411779B2 (en) | 2020-03-31 | 2022-08-09 | XCOM Labs, Inc. | Reference signal channel estimation |
US11522581B2 (en) * | 2020-05-08 | 2022-12-06 | Qualcomm Incorporated | Switching between intra-band multiple input multiple output and inter-band carrier aggregation |
WO2021242574A1 (en) | 2020-05-26 | 2021-12-02 | XCOM Labs, Inc. | Interference-aware beamforming |
WO2022087569A1 (en) | 2020-10-19 | 2022-04-28 | XCOM Labs, Inc. | Reference signal for wireless communication systems |
WO2022093988A1 (en) | 2020-10-30 | 2022-05-05 | XCOM Labs, Inc. | Clustering and/or rate selection in multiple-input multiple-output communication systems |
Family Cites Families (893)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4393276A (en) | 1981-03-19 | 1983-07-12 | Bell Telephone Laboratories, Incorporated | Fourier masking analog signal secure communication system |
FR2527871B1 (fr) | 1982-05-27 | 1986-04-11 | Thomson Csf | Systeme de radiocommunications, a sauts de frequence |
SU1320883A1 (ru) | 1985-02-06 | 1987-06-30 | Предприятие П/Я Р-6707 | Устройство дл восстановлени временных интервалов цифровых сигналов,принимаемых из канала с ограниченной полосой пропускани |
FR2584884B1 (fr) | 1985-07-09 | 1987-10-09 | Trt Telecom Radio Electr | Procede et dispositif de recherche de canal libre pour un systeme de radio mobile |
JPS6216639A (ja) | 1985-07-16 | 1987-01-24 | Kokusai Denshin Denwa Co Ltd <Kdd> | 秘話音声信号送出装置 |
GB2180127B (en) | 1985-09-04 | 1989-08-23 | Philips Electronic Associated | Method of data communication |
JPS6290045A (ja) | 1985-10-16 | 1987-04-24 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fdma通信方式における周波数割当方式 |
US5008900A (en) | 1989-08-14 | 1991-04-16 | International Mobile Machines Corporation | Subscriber unit for wireless digital subscriber communication system |
FR2652452B1 (fr) | 1989-09-26 | 1992-03-20 | Europ Agence Spatiale | Dispositif d'alimentation d'une antenne a faisceaux multiples. |
JPH04111544A (ja) | 1990-08-31 | 1992-04-13 | Nippon Telegr & Teleph Corp <Ntt> | 無線チャネル割当方法 |
US5257399A (en) | 1990-11-28 | 1993-10-26 | Telefonaktiebolaget L M Ericsson | Multiple access handling in a cellular communications system |
US5253270A (en) | 1991-07-08 | 1993-10-12 | Hal Communications | Apparatus useful in radio communication of digital data using minimal bandwidth |
US5455839A (en) | 1991-12-27 | 1995-10-03 | Motorola, Inc. | Device and method for precoding |
JP2904986B2 (ja) | 1992-01-31 | 1999-06-14 | 日本放送協会 | 直交周波数分割多重ディジタル信号送信装置および受信装置 |
US5384810A (en) | 1992-02-05 | 1995-01-24 | At&T Bell Laboratories | Modulo decoder |
US5363408A (en) | 1992-03-24 | 1994-11-08 | General Instrument Corporation | Mode selective quadrature amplitude modulation communication system |
US5282222A (en) | 1992-03-31 | 1994-01-25 | Michel Fattouche | Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum |
GB9209027D0 (en) | 1992-04-25 | 1992-06-17 | British Aerospace | Multi purpose digital signal regenerative processing apparatus |
US5268694A (en) | 1992-07-06 | 1993-12-07 | Motorola, Inc. | Communication system employing spectrum reuse on a spherical surface |
FR2693861A1 (fr) | 1992-07-16 | 1994-01-21 | Philips Electronique Lab | Récepteur de signaux à répartition multiplexée de fréquences orthogonales muni d'un dispositif de synchronisation de fréquences. |
US5603081A (en) | 1993-11-01 | 1997-02-11 | Telefonaktiebolaget Lm Ericsson | Method for communicating in a wireless communication system |
US5604744A (en) | 1992-10-05 | 1997-02-18 | Telefonaktiebolaget Lm Ericsson | Digital control channels having logical channels for multiple access radiocommunication |
US5768276A (en) | 1992-10-05 | 1998-06-16 | Telefonaktiebolaget Lm Ericsson | Digital control channels having logical channels supporting broadcast SMS |
US5404355A (en) | 1992-10-05 | 1995-04-04 | Ericsson Ge Mobile Communications, Inc. | Method for transmitting broadcast information in a digital control channel |
JP2942913B2 (ja) | 1993-06-10 | 1999-08-30 | ケイディディ株式会社 | 相手認証/暗号鍵配送方式 |
CA2165342C (en) | 1993-06-18 | 2005-11-15 | Brian K. Butler | Method and apparatus for determining the data rate of a received signal |
US5870393A (en) * | 1995-01-20 | 1999-02-09 | Hitachi, Ltd. | Spread spectrum communication system and transmission power control method therefor |
JPH0746248A (ja) | 1993-07-30 | 1995-02-14 | Toshiba Corp | 無線通信システム |
US6501810B1 (en) | 1998-10-13 | 2002-12-31 | Agere Systems Inc. | Fast frame synchronization |
US5594738A (en) * | 1993-10-18 | 1997-01-14 | Motorola, Inc. | Time slot allocation method |
ZA948134B (en) * | 1993-10-28 | 1995-06-13 | Quaqlcomm Inc | Method and apparatus for performing handoff between sectors of a common base station |
US5410538A (en) | 1993-11-09 | 1995-04-25 | At&T Corp. | Method and apparatus for transmitting signals in a multi-tone code division multiple access communication system |
SG48266A1 (en) | 1993-12-22 | 1998-04-17 | Philips Electronics Nv | Multicarrier frequency hopping communications system |
US5465253A (en) | 1994-01-04 | 1995-11-07 | Motorola, Inc. | Method and apparatus for demand-assigned reduced-rate out-of-band signaling channel |
US5469471A (en) | 1994-02-01 | 1995-11-21 | Qualcomm Incorporated | Method and apparatus for providing a communication link quality indication |
GB9402942D0 (en) | 1994-02-16 | 1994-04-06 | Northern Telecom Ltd | Base station antenna arrangement |
US5513379A (en) | 1994-05-04 | 1996-04-30 | At&T Corp. | Apparatus and method for dynamic resource allocation in wireless communication networks utilizing ordered borrowing |
US5603096A (en) | 1994-07-11 | 1997-02-11 | Qualcomm Incorporated | Reverse link, closed loop power control in a code division multiple access system |
US5583869A (en) | 1994-09-30 | 1996-12-10 | Motorola, Inc. | Method for dynamically allocating wireless communication resources |
CZ289189B6 (cs) | 1994-10-27 | 2001-11-14 | International Business Machines Corporation | Způsob zajiątění identifikace pohyblivého uľivatele v komunikačním systému a přenosný vstupní přístroj k provádění tohoto způsobu |
JP3437291B2 (ja) | 1994-11-14 | 2003-08-18 | キヤノン株式会社 | 再生装置および再生方法 |
US6169910B1 (en) * | 1994-12-30 | 2001-01-02 | Focused Energy Holding Inc. | Focused narrow beam communication system |
US5684491A (en) | 1995-01-27 | 1997-11-04 | Hazeltine Corporation | High gain antenna systems for cellular use |
JPH08288927A (ja) | 1995-04-17 | 1996-11-01 | Oki Electric Ind Co Ltd | スペクトル拡散通信方式及びスペクトル拡散通信装置 |
DE69534445T2 (de) | 1995-04-28 | 2006-04-27 | Alcatel | Verfahren zur TDMA-Verwaltung, Zentralstation, Teilnehmerstation und Netzwerk zur Ausführung des Verfahrens |
US5612978A (en) | 1995-05-30 | 1997-03-18 | Motorola, Inc. | Method and apparatus for real-time adaptive interference cancellation in dynamic environments |
US6018317A (en) | 1995-06-02 | 2000-01-25 | Trw Inc. | Cochannel signal processing system |
US6535666B1 (en) * | 1995-06-02 | 2003-03-18 | Trw Inc. | Method and apparatus for separating signals transmitted over a waveguide |
US6215983B1 (en) * | 1995-06-02 | 2001-04-10 | Trw Inc. | Method and apparatus for complex phase equalization for use in a communication system |
US5726978A (en) | 1995-06-22 | 1998-03-10 | Telefonaktiebolaget L M Ericsson Publ. | Adaptive channel allocation in a frequency division multiplexed system |
FI99252C (fi) | 1995-07-03 | 1997-12-29 | Nokia Mobile Phones Ltd | Yhdistetty radiosignaalin modulointi- ja monikäyttömenetelmä |
US6154484A (en) | 1995-09-06 | 2000-11-28 | Solana Technology Development Corporation | Method and apparatus for embedding auxiliary data in a primary data signal using frequency and time domain processing |
US5815488A (en) | 1995-09-28 | 1998-09-29 | Cable Television Laboratories, Inc. | Multiple user access method using OFDM |
EP0774850B1 (en) | 1995-11-16 | 2004-10-27 | Ntt Mobile Communications Network Inc. | Digital signal detecting method and detector |
JPH09139725A (ja) * | 1995-11-16 | 1997-05-27 | Matsushita Electric Ind Co Ltd | 多重通信装置 |
US5887023A (en) | 1995-11-29 | 1999-03-23 | Nec Corporation | Method and apparatus for a frequency hopping-spread spectrum communication system |
JP2812318B2 (ja) | 1995-11-29 | 1998-10-22 | 日本電気株式会社 | スペクトラム拡散通信方法及び装置 |
KR0150275B1 (ko) | 1995-12-22 | 1998-11-02 | 양승택 | 멀티캐스트 통신의 폭주 제어방법 |
EP0786889B1 (en) | 1996-02-02 | 2002-04-17 | Deutsche Thomson-Brandt Gmbh | Method for the reception of multicarrier signals and related apparatus |
US6088592A (en) | 1996-03-25 | 2000-07-11 | Airnet Communications Corporation | Wireless system plan using in band-translators with diversity backhaul to enable efficient depolyment of high capacity base transceiver systems |
US6134215A (en) | 1996-04-02 | 2000-10-17 | Qualcomm Incorpoated | Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel |
US5822368A (en) | 1996-04-04 | 1998-10-13 | Lucent Technologies Inc. | Developing a channel impulse response by using distortion |
JPH09281508A (ja) * | 1996-04-12 | 1997-10-31 | Semiconductor Energy Lab Co Ltd | 液晶表示装置およびその作製方法 |
GB9609148D0 (en) | 1996-05-01 | 1996-07-03 | Plessey Telecomm | Multi-party communication |
US5790537A (en) | 1996-05-15 | 1998-08-04 | Mcgill University | Interference suppression in DS-CDMA systems |
IL120574A (en) | 1996-05-17 | 2002-09-12 | Motorala Ltd | Methods and devices for transmitter track weights |
US5926470A (en) | 1996-05-22 | 1999-07-20 | Qualcomm Incorporated | Method and apparatus for providing diversity in hard handoff for a CDMA system |
GB9611146D0 (en) | 1996-05-29 | 1996-07-31 | Philips Electronics Nv | Method of, and system for, transmitting messages |
US5732113A (en) | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
KR980007105A (ko) | 1996-06-28 | 1998-03-30 | 김광호 | 이동국 송신전력 제어방법 |
US6909797B2 (en) | 1996-07-10 | 2005-06-21 | R2 Technology, Inc. | Density nodule detection in 3-D digital images |
US6058309A (en) | 1996-08-09 | 2000-05-02 | Nortel Networks Corporation | Network directed system selection for cellular and PCS enhanced roaming |
US6141317A (en) | 1996-08-22 | 2000-10-31 | Tellabs Operations, Inc. | Apparatus and method for bandwidth management in a multi-point OFDM/DMT digital communications system |
US6233456B1 (en) | 1996-09-27 | 2001-05-15 | Qualcomm Inc. | Method and apparatus for adjacent coverage area handoff in communication systems |
JP3444114B2 (ja) | 1996-11-22 | 2003-09-08 | ソニー株式会社 | 通信方法、基地局及び端末装置 |
US5956642A (en) | 1996-11-25 | 1999-09-21 | Telefonaktiebolaget L M Ericsson | Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system |
US6061337A (en) | 1996-12-02 | 2000-05-09 | Lucent Technologies Inc. | System and method for CDMA handoff using telemetry to determine the need for handoff and to select the destination cell site |
EP0848563A3 (en) | 1996-12-11 | 2000-01-05 | Texas Instruments Incorporated | Improvements in or relating to telecommunication systems |
KR100221336B1 (ko) | 1996-12-28 | 1999-09-15 | 전주범 | 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법 |
US5953325A (en) * | 1997-01-02 | 1999-09-14 | Telefonaktiebolaget L M Ericsson (Publ) | Forward link transmission mode for CDMA cellular communications system using steerable and distributed antennas |
US6232918B1 (en) | 1997-01-08 | 2001-05-15 | Us Wireless Corporation | Antenna array calibration in wireless communication systems |
US6173007B1 (en) | 1997-01-15 | 2001-01-09 | Qualcomm Inc. | High-data-rate supplemental channel for CDMA telecommunications system |
US5933421A (en) | 1997-02-06 | 1999-08-03 | At&T Wireless Services Inc. | Method for frequency division duplex communications |
US5920571A (en) | 1997-02-07 | 1999-07-06 | Lucent Technologies Inc. | Frequency channel and time slot assignments in broadband access networks |
US6335922B1 (en) | 1997-02-11 | 2002-01-01 | Qualcomm Incorporated | Method and apparatus for forward link rate scheduling |
AU6177298A (en) | 1997-02-21 | 1998-09-09 | Motorola, Inc. | Method and apparatus for allocating spectral resources in a wireless communication system |
US6584144B2 (en) * | 1997-02-24 | 2003-06-24 | At&T Wireless Services, Inc. | Vertical adaptive antenna array for a discrete multitone spread spectrum communications system |
US6359923B1 (en) | 1997-12-18 | 2002-03-19 | At&T Wireless Services, Inc. | Highly bandwidth efficient communications |
US5838268A (en) | 1997-03-14 | 1998-11-17 | Orckit Communications Ltd. | Apparatus and methods for modulation and demodulation of data |
US5974310A (en) | 1997-03-20 | 1999-10-26 | Omnipoint Corporation | Communication control for a user of a central communication center |
FI104610B (fi) | 1997-03-27 | 2000-02-29 | Nokia Networks Oy | Ohjauskanavan allokointi pakettiradioverkossa |
US6175550B1 (en) | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
KR100242421B1 (ko) | 1997-04-14 | 2000-02-01 | 윤종용 | 디지털 이동 통신시스템의 파이롯트 피엔 오프셋 할당 방법 |
FI106605B (fi) * | 1997-04-16 | 2001-02-28 | Nokia Networks Oy | Autentikointimenetelmä |
US6076114A (en) | 1997-04-18 | 2000-06-13 | International Business Machines Corporation | Methods, systems and computer program products for reliable data transmission over communications networks |
FI105136B (fi) | 1997-04-21 | 2000-06-15 | Nokia Mobile Phones Ltd | Yleinen pakettiradiopalvelu |
FI104939B (fi) | 1997-04-23 | 2000-04-28 | Nokia Networks Oy | Merkinannon toteutus tietoliikenneverkossa |
CN101420685B (zh) | 1997-04-24 | 2011-08-24 | 株式会社Ntt都科摩 | 移动通信方法和移动通信系统 |
KR100241894B1 (ko) | 1997-05-07 | 2000-02-01 | 윤종용 | 개인통신 시스템의 코드분할 접속방식 기지국 시스템에서 소프트웨어 관리방법 |
US6075814A (en) | 1997-05-09 | 2000-06-13 | Broadcom Homenetworking, Inc. | Method and apparatus for reducing signal processing requirements for transmitting packet-based data with a modem |
JP2879030B2 (ja) | 1997-05-16 | 1999-04-05 | 株式会社次世代デジタルテレビジョン放送システム研究所 | Ofdm送信装置及び受信装置とofdm送信方法及び受信方法 |
FI105063B (fi) | 1997-05-16 | 2000-05-31 | Nokia Networks Oy | Menetelmä lähetyssuunnan määrittämiseksi ja radiojärjestelmä |
US6374115B1 (en) | 1997-05-28 | 2002-04-16 | Transcrypt International/E.F. Johnson | Method and apparatus for trunked radio repeater communications with backwards compatibility |
EP1811802B1 (en) | 1997-05-30 | 2008-12-17 | QUALCOMM Incorporated | Repeated single bit paging indicator via PICH channels in WCDMA wireless Terminals. |
US6052364A (en) * | 1997-06-13 | 2000-04-18 | Comsat Corporation | CDMA system architecture for satcom terminals |
SE9702271D0 (sv) | 1997-06-13 | 1997-06-13 | Ericsson Telefon Ab L M | Återanvändning av fysisk kontrollkanal i ett distribuerat cellulärt radiokommunikationssystem |
US6151296A (en) | 1997-06-19 | 2000-11-21 | Qualcomm Incorporated | Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals |
US5867478A (en) | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
US6240129B1 (en) | 1997-07-10 | 2001-05-29 | Alcatel | Method and windowing unit to reduce leakage, fourier transformer and DMT modem wherein the unit is used |
US6038150A (en) | 1997-07-23 | 2000-03-14 | Yee; Hsian-Pei | Transistorized rectifier for a multiple output converter |
US6038263A (en) | 1997-07-31 | 2000-03-14 | Motorola, Inc. | Method and apparatus for transmitting signals in a communication system |
US6307849B1 (en) | 1997-09-08 | 2001-10-23 | Qualcomm Incorporated | Method and system for changing forward traffic channel power allocation during soft handoff |
KR100365346B1 (ko) | 1997-09-09 | 2003-04-11 | 삼성전자 주식회사 | 이동통신시스템의쿼시직교부호생성및쿼시직교부호를이용한대역확산장치및방법 |
US6038450A (en) | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
US6377809B1 (en) * | 1997-09-16 | 2002-04-23 | Qualcomm Incorporated | Channel structure for communication systems |
US6577739B1 (en) | 1997-09-19 | 2003-06-10 | University Of Iowa Research Foundation | Apparatus and methods for proportional audio compression and frequency shifting |
US6058105A (en) | 1997-09-26 | 2000-05-02 | Lucent Technologies Inc. | Multiple antenna communication system and method thereof |
US6075797A (en) | 1997-10-17 | 2000-06-13 | 3Com Corporation | Method and system for detecting mobility of a wireless-capable modem to minimize data transfer rate renegotiations |
US7184426B2 (en) | 2002-12-12 | 2007-02-27 | Qualcomm, Incorporated | Method and apparatus for burst pilot for a time division multiplex system |
KR100369602B1 (ko) | 1997-11-03 | 2003-04-11 | 삼성전자 주식회사 | 부호분할다중접속방식이동통신시스템의전력제어비트삽입방법 |
US5995992A (en) | 1997-11-17 | 1999-11-30 | Bull Hn Information Systems Inc. | Conditional truncation indicator control for a decimal numeric processor employing result truncation |
US6108323A (en) | 1997-11-26 | 2000-08-22 | Nokia Mobile Phones Limited | Method and system for operating a CDMA cellular system having beamforming antennas |
US5971484A (en) * | 1997-12-03 | 1999-10-26 | Steelcase Development Inc. | Adjustable armrest for chairs |
US6067315A (en) | 1997-12-04 | 2000-05-23 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for coherently-averaged power estimation |
US6563806B1 (en) | 1997-12-12 | 2003-05-13 | Hitachi, Ltd. | Base station for multi-carrier TDMA mobile communication system and method for assigning communication channels |
US6222832B1 (en) | 1998-06-01 | 2001-04-24 | Tantivy Communications, Inc. | Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system |
US6393008B1 (en) | 1997-12-23 | 2002-05-21 | Nokia Movile Phones Ltd. | Control structures for contention-based packet data services in wideband CDMA |
JPH11191756A (ja) | 1997-12-25 | 1999-07-13 | Nec Corp | Phs(登録商標)によるデータ通信装置及び方法 |
JPH11196109A (ja) | 1997-12-26 | 1999-07-21 | Canon Inc | 無線情報通信システム |
DE19800653A1 (de) | 1998-01-09 | 1999-07-15 | Albert M Huber | Vorrichtung zum Abtrennen von Partikeln, oder von Partikeln und Gasen, oder von Fluiden anderer Dichte aus Flüssigkeiten, oder Suspensionen, oder Emulsionen, die ein feststehendes Gehäuse besitzt und mit Hilfe der Zentrifugalkraft separiert und auch diese obengenannten Medien durch diese Vorrichtung und eventuell nachgeschaltete Mittel fördert |
DE19800953C1 (de) | 1998-01-13 | 1999-07-29 | Siemens Ag | Verfahren und Funk-Kommunikationssystem zur Zuteilung von Funkressourcen einer Funkschnittstelle |
US6175650B1 (en) * | 1998-01-26 | 2001-01-16 | Xerox Corporation | Adaptive quantization compatible with the JPEG baseline sequential mode |
US5955992A (en) | 1998-02-12 | 1999-09-21 | Shattil; Steve J. | Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter |
KR100290679B1 (ko) | 1998-02-14 | 2001-05-15 | 윤종용 | 전용제어채널을 구비하는 이동통신 시스템의 데이타 통신장치 |
JP3589851B2 (ja) | 1998-02-20 | 2004-11-17 | 株式会社日立製作所 | パケット通信システム及びパケット通信装置 |
KR100377661B1 (ko) | 1998-02-27 | 2003-03-26 | 지멘스 악티엔게젤샤프트 | 코드 및 시분할 멀티플렉스를 기초로 하는 이동 및/또는고정 송수신 장치간의 무선 통신 시스템 |
JP3199020B2 (ja) | 1998-02-27 | 2001-08-13 | 日本電気株式会社 | 音声音楽信号の符号化装置および復号装置 |
AU3254599A (en) | 1998-02-27 | 1999-09-15 | Siemens Aktiengesellschaft | Telecommunications system with wireless code and time-division multiplex based telecommunication |
DE69923898T2 (de) | 1998-03-14 | 2006-04-27 | Samsung Electronics Co., Ltd., Suwon | Vorrichtung und Verfahren zum Austauschen von Rahmen-Nachrichten unterschiedlicher Längen in einem CDMA-Kommunikationssystem |
WO1999049595A1 (en) | 1998-03-23 | 1999-09-30 | Samsung Electronics Co., Ltd. | Power control device and method for controlling a reverse link common channel in a cdma communication system |
CA2722546C (en) | 1998-04-03 | 2013-03-19 | Tellabs Operations, Inc. | Filter for impulse response shortening, with addition spectral constraints, for multicarrier transmission |
US6112094A (en) | 1998-04-06 | 2000-08-29 | Ericsson Inc. | Orthogonal frequency hopping pattern re-use scheme |
JPH11298954A (ja) | 1998-04-08 | 1999-10-29 | Hitachi Ltd | 無線通信方法及び無線通信装置 |
US6353620B1 (en) | 1998-04-09 | 2002-03-05 | Ericsson Inc. | System and method for facilitating inter-nodal protocol agreement in a telecommunications |
EP1074099B1 (fr) | 1998-04-21 | 2003-02-05 | THOMSON multimedia | Procede de transmission dans un reseau de communication domestique comportant un canal sans fil |
US6567425B1 (en) | 1998-04-23 | 2003-05-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Bearer independent signaling protocol |
US6075350A (en) | 1998-04-24 | 2000-06-13 | Lockheed Martin Energy Research Corporation | Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering |
US6198775B1 (en) * | 1998-04-28 | 2001-03-06 | Ericsson Inc. | Transmit diversity method, systems, and terminals using scramble coding |
WO1999059265A1 (en) | 1998-05-12 | 1999-11-18 | Samsung Electronics Co., Ltd. | Device and method for reducing the peak-to-average power ratio of a mobile station's transmit power |
KR100383575B1 (ko) | 1998-05-12 | 2004-06-26 | 삼성전자주식회사 | 단말기의송신전력에서피크전력대평균전력비를줄이기위한확산변조방법및장치 |
GB2337414A (en) | 1998-05-14 | 1999-11-17 | Fujitsu Ltd | Soft handoff in cellular communications networks |
US6643275B1 (en) | 1998-05-15 | 2003-11-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Random access in a mobile telecommunications system |
KR100291476B1 (ko) | 1998-05-25 | 2001-07-12 | 윤종용 | 파일럿측정요구명령제어방법및시스템 |
JP2000004215A (ja) | 1998-06-16 | 2000-01-07 | Matsushita Electric Ind Co Ltd | 送受信システム |
JP3092798B2 (ja) | 1998-06-30 | 2000-09-25 | 日本電気株式会社 | 適応送受信装置 |
JP2000022618A (ja) | 1998-07-03 | 2000-01-21 | Hitachi Ltd | 基地局およびアンテナビームの制御方法 |
RU2141706C1 (ru) | 1998-07-06 | 1999-11-20 | Военная академия связи | Способ и устройство адаптивной пространственной фильтрации сигналов |
KR100318959B1 (ko) | 1998-07-07 | 2002-04-22 | 윤종용 | 부호분할다중접속통신시스템의서로다른부호간의간섭을제거하는장치및방법 |
US6621809B1 (en) | 1998-07-12 | 2003-09-16 | Samsung Electronics Co., Ltd. | Device and method for gating transmission in a CDMA mobile communication system |
KR100620087B1 (ko) | 1998-07-13 | 2006-09-05 | 소니 가부시끼 가이샤 | 통신방법, 송신기 및 수신기 |
CA2302269C (en) | 1998-07-16 | 2003-11-04 | Samsung Electronics Co., Ltd. | Processing packet data in mobile communication system |
US6636525B1 (en) | 1998-08-19 | 2003-10-21 | International Business Machines Corporation | Destination dependent coding for discrete multi-tone modulation |
KR100429540B1 (ko) | 1998-08-26 | 2004-08-09 | 삼성전자주식회사 | 이동통신시스템의패킷데이터통신장치및방법 |
US6798736B1 (en) | 1998-09-22 | 2004-09-28 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving variable rate data |
JP2000102065A (ja) | 1998-09-24 | 2000-04-07 | Toshiba Corp | 無線通信基地局装置 |
CA2282942A1 (en) | 1998-11-09 | 2000-05-09 | Lucent Technologies Inc. | Efficient authentication with key update |
US6542485B1 (en) | 1998-11-25 | 2003-04-01 | Lucent Technologies Inc. | Methods and apparatus for wireless communication using time division duplex time-slotted CDMA |
US6473399B1 (en) | 1998-11-30 | 2002-10-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for determining an optimum timeout under varying data rates in an RLC wireless system which uses a PDU counter |
US6590881B1 (en) | 1998-12-04 | 2003-07-08 | Qualcomm, Incorporated | Method and apparatus for providing wireless communication system synchronization |
EP1006665B1 (en) | 1998-12-04 | 2003-05-28 | Lucent Technologies Inc. | Error concealment or correction of speech, image and video signals |
JP2000184425A (ja) | 1998-12-15 | 2000-06-30 | Toshiba Corp | 無線通信基地局装置 |
GB2345612B (en) | 1998-12-31 | 2003-09-03 | Nokia Mobile Phones Ltd | Measurement report transmission in a telecommunications system |
US6654429B1 (en) | 1998-12-31 | 2003-11-25 | At&T Corp. | Pilot-aided channel estimation for OFDM in wireless systems |
EP1439677B9 (en) | 1999-01-08 | 2007-11-07 | Sony Deutschland GmbH | Synchronisation symbol structure for an OFDM system |
US6229795B1 (en) * | 1999-01-13 | 2001-05-08 | Qualcomm Incorporated | System for allocating resources in a communication system |
US6393012B1 (en) | 1999-01-13 | 2002-05-21 | Qualcomm Inc. | System for allocating resources in a communication system |
EP1021019A1 (en) | 1999-01-15 | 2000-07-19 | Sony International (Europe) GmbH | Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system |
US6584140B1 (en) | 1999-01-22 | 2003-06-24 | Systems Information And Electronic Systems Integration Inc. | Spectrum efficient fast frequency-hopped modem with coherent demodulation |
US6160651A (en) | 1999-01-25 | 2000-12-12 | Telcordia Technologies, Inc. | Optical layer survivability and security system using optical label switching and high-speed optical header reinsertion |
US6388998B1 (en) | 1999-02-04 | 2002-05-14 | Lucent Technologies Inc. | Reuse of codes and spectrum in a CDMA system with multiple-sector cells |
US6597746B1 (en) | 1999-02-18 | 2003-07-22 | Globespanvirata, Inc. | System and method for peak to average power ratio reduction |
US6256478B1 (en) | 1999-02-18 | 2001-07-03 | Eastman Kodak Company | Dynamic packet sizing in an RF communications system |
CA2262315A1 (en) | 1999-02-19 | 2000-08-19 | Northern Telecom Limited | Joint optimal power balance for coded/tdm constituent data channels |
US6259918B1 (en) | 1999-02-26 | 2001-07-10 | Telefonaktiebolaget Lm (Publ) | Preservation of cell borders at hand-off within a smart antenna cellular system |
US6487243B1 (en) | 1999-03-08 | 2002-11-26 | International Business Machines Corporation | Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems |
US6317435B1 (en) | 1999-03-08 | 2001-11-13 | Qualcomm Incorporated | Method and apparatus for maximizing the use of available capacity in a communication system |
US6987746B1 (en) * | 1999-03-15 | 2006-01-17 | Lg Information & Communications, Ltd. | Pilot signals for synchronization and/or channel estimation |
KR20000060428A (ko) | 1999-03-16 | 2000-10-16 | 윤종용 | 코드분할다중접속 시스템에서 기지국간 직접 연결을 이용한 소프트/소프터 핸드오프의 강화 방법 |
US6693952B1 (en) | 1999-03-16 | 2004-02-17 | Lucent Technologies Inc. | Dynamic code allocation for downlink shared channels |
US7151761B1 (en) | 1999-03-19 | 2006-12-19 | Telefonaktiebolaget L M Ericsson (Publ) | Code reservation for interference measurement in a CDMA radiocommunication system |
US6483820B1 (en) | 1999-03-22 | 2002-11-19 | Ericsson Inc. | System and method for dynamic radio resource allocation for non-transparent high-speed circuit-switched data services |
US6430401B1 (en) * | 1999-03-29 | 2002-08-06 | Lucent Technologies Inc. | Technique for effectively communicating multiple digital representations of a signal |
GB2348776B (en) | 1999-04-06 | 2003-07-09 | Motorola Ltd | A communications network and method of allocating resource thefor |
US6249683B1 (en) | 1999-04-08 | 2001-06-19 | Qualcomm Incorporated | Forward link power control of multiple data streams transmitted to a mobile station using a common power control channel |
EP1047209A1 (en) | 1999-04-19 | 2000-10-25 | Interuniversitair Micro-Elektronica Centrum Vzw | A method and apparatus for multiuser transmission |
US6937665B1 (en) | 1999-04-19 | 2005-08-30 | Interuniversitaire Micron Elektronica Centrum | Method and apparatus for multi-user transmission |
US6614857B1 (en) | 1999-04-23 | 2003-09-02 | Lucent Technologies Inc. | Iterative channel estimation and compensation based thereon |
JP4224168B2 (ja) | 1999-04-23 | 2009-02-12 | パナソニック株式会社 | 基地局装置及びピーク電力抑圧方法 |
AU749328B2 (en) | 1999-05-12 | 2002-06-20 | Samsung Electronics Co., Ltd. | Method for supporting a discontinuous transmission mode in a base station in a mobile communication system |
JP3236273B2 (ja) | 1999-05-17 | 2001-12-10 | 三菱電機株式会社 | マルチキャリア伝送システムおよびマルチキャリア変調方法 |
US6445917B1 (en) | 1999-05-19 | 2002-09-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile station measurements with event-based reporting |
US6674787B1 (en) * | 1999-05-19 | 2004-01-06 | Interdigital Technology Corporation | Raising random access channel packet payload |
US6674810B1 (en) | 1999-05-27 | 2004-01-06 | 3Com Corporation | Method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal |
JP2001057545A (ja) | 1999-06-02 | 2001-02-27 | Texas Instr Inc <Ti> | スペクトラム拡散チャネルの推定方法と装置 |
US6631126B1 (en) | 1999-06-11 | 2003-10-07 | Lucent Technologies Inc. | Wireless communications using circuit-oriented and packet-oriented frame selection/distribution functions |
US6539213B1 (en) * | 1999-06-14 | 2003-03-25 | Time Domain Corporation | System and method for impulse radio power control |
FR2794915A1 (fr) | 1999-06-14 | 2000-12-15 | Canon Kk | Procede et dispositif d'emission, procede et dispositif de reception, et systemes les mettant en oeuvre |
US7095708B1 (en) | 1999-06-23 | 2006-08-22 | Cingular Wireless Ii, Llc | Methods and apparatus for use in communicating voice and high speed data in a wireless communication system |
JP3518426B2 (ja) | 1999-06-30 | 2004-04-12 | Kddi株式会社 | Cdma移動通信システムにおける符号割当方法 |
US6363060B1 (en) * | 1999-06-30 | 2002-03-26 | Qualcomm Incorporated | Method and apparatus for fast WCDMA acquisition |
US6657949B1 (en) | 1999-07-06 | 2003-12-02 | Cisco Technology, Inc. | Efficient request access for OFDM systems |
JP2003506525A (ja) | 1999-07-28 | 2003-02-18 | チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド | サレン型マンガン錯体の水溶性顆粒 |
US6831943B1 (en) | 1999-08-13 | 2004-12-14 | Texas Instruments Incorporated | Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification |
JP2001069046A (ja) | 1999-08-30 | 2001-03-16 | Fujitsu Ltd | 送受信システムおよび受信装置 |
US6542743B1 (en) | 1999-08-31 | 2003-04-01 | Qualcomm, Incorporated | Method and apparatus for reducing pilot search times utilizing mobile station location information |
US6765969B1 (en) | 1999-09-01 | 2004-07-20 | Motorola, Inc. | Method and device for multi-user channel estimation |
US6928047B1 (en) | 1999-09-11 | 2005-08-09 | The University Of Delaware | Precoded OFDM systems robust to spectral null channels and vector OFDM systems with reduced cyclic prefix length |
US6654431B1 (en) | 1999-09-15 | 2003-11-25 | Telcordia Technologies, Inc. | Multicarrier personal access communication system |
RU2242091C2 (ru) | 1999-10-02 | 2004-12-10 | Самсунг Электроникс Ко., Лтд. | Устройство и способ стробирования данных, передаваемых по каналу управления в системе связи мдкр |
JP3961829B2 (ja) | 1999-10-02 | 2007-08-22 | サムスン エレクトロニクス カンパニー リミテッド | 符号分割多重接続通信システムの制御チャネル信号を断続的に送受信する装置及び方法 |
US6870882B1 (en) * | 1999-10-08 | 2005-03-22 | At&T Corp. | Finite-length equalization over multi-input multi-output channels |
US6337659B1 (en) | 1999-10-25 | 2002-01-08 | Gamma Nu, Inc. | Phased array base station antenna system having distributed low power amplifiers |
US6985466B1 (en) | 1999-11-09 | 2006-01-10 | Arraycomm, Inc. | Downlink signal processing in CDMA systems utilizing arrays of antennae |
US6721568B1 (en) | 1999-11-10 | 2004-04-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Admission control in a mobile radio communications system |
KR100602022B1 (ko) | 1999-12-15 | 2006-07-20 | 유티스타콤코리아 유한회사 | 이동통신 시스템에서 동기식 기지국과 비동기식 기지국간핸드오프에 필요한 파라메타 전송방법 |
ATE307441T1 (de) * | 1999-11-17 | 2005-11-15 | Beschleunigungsabhängige kanalumschaltung in mobilen telekommunikationsnetzen | |
US6466800B1 (en) | 1999-11-19 | 2002-10-15 | Siemens Information And Communication Mobile, Llc | Method and system for a wireless communication system incorporating channel selection algorithm for 2.4 GHz direct sequence spread spectrum cordless telephone system |
JP3289718B2 (ja) | 1999-11-24 | 2002-06-10 | 日本電気株式会社 | 時分割多重アクセス方法及び基準局装置、端末局装置 |
DE19957288C1 (de) | 1999-11-29 | 2001-05-10 | Siemens Ag | Verfahren zur Signalisierung einer Funkkanalstruktur in einem Funk-Kommunikationssystem |
CA2392886C (en) | 1999-11-29 | 2008-01-22 | Samsung Electronics Co., Ltd. | Apparatus and method for assigning a common packet channel in a cdma communication system |
US6763009B1 (en) | 1999-12-03 | 2004-07-13 | Lucent Technologies Inc. | Down-link transmission scheduling in CDMA data networks |
US6351499B1 (en) | 1999-12-15 | 2002-02-26 | Iospan Wireless, Inc. | Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter |
US6690951B1 (en) * | 1999-12-20 | 2004-02-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Dynamic size allocation system and method |
CA2327734A1 (en) | 1999-12-21 | 2001-06-21 | Eta Sa Fabriques D'ebauches | Ultra-thin piezoelectric resonator |
US6628673B1 (en) | 1999-12-29 | 2003-09-30 | Atheros Communications, Inc. | Scalable communication system using overlaid signals and multi-carrier frequency communication |
US6678318B1 (en) | 2000-01-11 | 2004-01-13 | Agere Systems Inc. | Method and apparatus for time-domain equalization in discrete multitone transceivers |
US7463600B2 (en) | 2000-01-20 | 2008-12-09 | Nortel Networks Limited | Frame structure for variable rate wireless channels transmitting high speed data |
US6907020B2 (en) | 2000-01-20 | 2005-06-14 | Nortel Networks Limited | Frame structures supporting voice or streaming communications with high speed data communications in wireless access networks |
US6804307B1 (en) | 2000-01-27 | 2004-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for efficient transmit diversity using complex space-time block codes |
KR100387034B1 (ko) | 2000-02-01 | 2003-06-11 | 삼성전자주식회사 | 무선통신 시스템의 패킷데이타 서비스를 위한스케듈링장치 및 방법 |
FI117465B (fi) | 2000-02-03 | 2006-10-31 | Danisco Sweeteners Oy | Menetelmä pureskeltavien ytimien kovapinnoittamiseksi |
US6754511B1 (en) | 2000-02-04 | 2004-06-22 | Harris Corporation | Linear signal separation using polarization diversity |
WO2001059968A1 (en) * | 2000-02-09 | 2001-08-16 | Golden Bridge Technology, Inc. | Collision avoidance |
GB0002985D0 (en) | 2000-02-09 | 2000-03-29 | Travelfusion Limited | Integrated journey planner |
US6546248B1 (en) | 2000-02-10 | 2003-04-08 | Qualcomm, Incorporated | Method and apparatus for generating pilot strength measurement messages |
JP3826653B2 (ja) | 2000-02-25 | 2006-09-27 | Kddi株式会社 | 無線通信システムのサブキャリア割当方法 |
US6642887B2 (en) | 2000-02-29 | 2003-11-04 | Hrl Laboratories, Llc | Cooperative mobile antenna system |
JP2001245355A (ja) | 2000-03-01 | 2001-09-07 | Mitsubishi Electric Corp | 移動通信におけるパケット伝送システム |
JP2001249802A (ja) | 2000-03-07 | 2001-09-14 | Sony Corp | 伝送方法、伝送システム、伝送制御装置及び入力装置 |
KR100493068B1 (ko) | 2000-03-08 | 2005-06-02 | 삼성전자주식회사 | 이동통신시스템에서 피드백 정보를 이용하는 반맹목적방식의 송신안테나어레이 장치 및 방법 |
AU2000231670A1 (en) | 2000-03-15 | 2001-09-24 | Nokia Corporation | Transmit diversity method and system |
US6473467B1 (en) | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
US6940845B2 (en) | 2000-03-23 | 2005-09-06 | At & T, Corp. | Asymmetric measurement-based dynamic packet assignment system and method for wireless data services |
JP2001285927A (ja) | 2000-03-29 | 2001-10-12 | Matsushita Electric Ind Co Ltd | 通信端末装置及び無線通信方法 |
US6493331B1 (en) | 2000-03-30 | 2002-12-10 | Qualcomm Incorporated | Method and apparatus for controlling transmissions of a communications systems |
US7403748B1 (en) | 2000-04-07 | 2008-07-22 | Nokia Coporation | Multi-antenna transmission method and system |
US7289570B2 (en) | 2000-04-10 | 2007-10-30 | Texas Instruments Incorporated | Wireless communications |
US6934275B1 (en) | 2000-04-17 | 2005-08-23 | Motorola, Inc. | Apparatus and method for providing separate forward dedicated and shared control channels in a communications system |
US6961364B1 (en) | 2000-04-18 | 2005-11-01 | Flarion Technologies, Inc. | Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems |
US6954481B1 (en) | 2000-04-18 | 2005-10-11 | Flarion Technologies, Inc. | Pilot use in orthogonal frequency division multiplexing based spread spectrum multiple access systems |
US6807146B1 (en) | 2000-04-21 | 2004-10-19 | Atheros Communications, Inc. | Protocols for scalable communication system using overland signals and multi-carrier frequency communication |
US7397859B2 (en) | 2000-04-22 | 2008-07-08 | Atheros Communications, Inc. | Multi-carrier communication systems employing variable symbol rates and number of carriers |
US6748220B1 (en) * | 2000-05-05 | 2004-06-08 | Nortel Networks Limited | Resource allocation in wireless networks |
US6987729B1 (en) | 2000-05-11 | 2006-01-17 | Lucent Technologies Inc. | Method and apparatus for admission management in wireless communication systems |
FI20001133A (fi) | 2000-05-12 | 2001-11-13 | Nokia Corp | Menetelmä päätelaitteiden ja yhteysaseman välisen tiedonsiirron järjestämiseksi tiedonsiirtojärjestelmässä |
FI20001160A (fi) | 2000-05-15 | 2001-11-16 | Nokia Networks Oy | Pilottisignaalin toteuttamismenetelmä |
ES2206103T3 (es) | 2000-05-17 | 2004-05-16 | Matsushita Electric Industrial Co., Ltd. | Metodo arq (peticion automatica de retransmision) hibrido para transmision de datos en paquetes. |
US6529525B1 (en) * | 2000-05-19 | 2003-03-04 | Motorola, Inc. | Method for supporting acknowledged transport layer protocols in GPRS/edge host application |
CA2310188A1 (en) | 2000-05-30 | 2001-11-30 | Mark J. Frazer | Communication structure with channels configured responsive to reception quality |
KR100370746B1 (ko) | 2000-05-30 | 2003-02-05 | 한국전자통신연구원 | 다차원 직교 자원 도약 다중화 통신 방식 및 장치 |
GB2363256B (en) | 2000-06-07 | 2004-05-12 | Motorola Inc | Adaptive antenna array and method of controlling operation thereof |
US7050402B2 (en) | 2000-06-09 | 2006-05-23 | Texas Instruments Incorporated | Wireless communications with frequency band selection |
US7248841B2 (en) | 2000-06-13 | 2007-07-24 | Agee Brian G | Method and apparatus for optimization of wireless multipoint electromagnetic communication networks |
US6337983B1 (en) | 2000-06-21 | 2002-01-08 | Motorola, Inc. | Method for autonomous handoff in a wireless communication system |
US6701165B1 (en) | 2000-06-21 | 2004-03-02 | Agere Systems Inc. | Method and apparatus for reducing interference in non-stationary subscriber radio units using flexible beam selection |
US20020015405A1 (en) * | 2000-06-26 | 2002-02-07 | Risto Sepponen | Error correction of important fields in data packet communications in a digital mobile radio network |
JP2002016531A (ja) | 2000-06-27 | 2002-01-18 | Nec Corp | Cdma通信方式及びその方法 |
JP2002026790A (ja) | 2000-07-03 | 2002-01-25 | Matsushita Electric Ind Co Ltd | 無線通信装置及び無線通信方法 |
DE10032426B4 (de) | 2000-07-04 | 2006-01-12 | Siemens Ag | Strahlformungsverfahren |
WO2002004936A1 (en) | 2000-07-11 | 2002-01-17 | Japan Science And Technology Corporation | Probe for mass spectrometry of liquid sample |
IT1318161B1 (it) | 2000-07-14 | 2003-07-23 | Cit Alcatel | Metodo e dispositivo per il recupero di portante in sistemi ofdm |
FR2814301B1 (fr) | 2000-07-17 | 2004-11-12 | Telediffusion De France Tdf | Synchronisation d'un signal amrf |
US7418043B2 (en) | 2000-07-19 | 2008-08-26 | Lot 41 Acquisition Foundation, Llc | Software adaptable high performance multicarrier transmission protocol |
JP4808907B2 (ja) | 2000-07-26 | 2011-11-02 | 三菱電機株式会社 | マルチキャリアcdma通信装置およびマルチキャリアcdma送信装置 |
GB2366938B (en) * | 2000-08-03 | 2004-09-01 | Orange Personal Comm Serv Ltd | Authentication in a mobile communications network |
DE10039429A1 (de) | 2000-08-11 | 2002-03-07 | Siemens Ag | Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem |
GB0020088D0 (en) | 2000-08-15 | 2000-10-04 | Fujitsu Ltd | Adaptive beam forming |
US6980540B1 (en) | 2000-08-16 | 2005-12-27 | Lucent Technologies Inc. | Apparatus and method for acquiring an uplink traffic channel, in wireless communications systems |
US6487184B1 (en) | 2000-08-25 | 2002-11-26 | Motorola, Inc. | Method and apparatus for supporting radio acknowledgement information for a uni-directional user data channel |
US6985434B2 (en) * | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
US6937592B1 (en) | 2000-09-01 | 2005-08-30 | Intel Corporation | Wireless communications system that supports multiple modes of operation |
US6850481B2 (en) | 2000-09-01 | 2005-02-01 | Nortel Networks Limited | Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system |
US6898441B1 (en) | 2000-09-12 | 2005-05-24 | Lucent Technologies Inc. | Communication system having a flexible transmit configuration |
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US6694147B1 (en) | 2000-09-15 | 2004-02-17 | Flarion Technologies, Inc. | Methods and apparatus for transmitting information between a basestation and multiple mobile stations |
US6802035B2 (en) | 2000-09-19 | 2004-10-05 | Intel Corporation | System and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
US6842487B1 (en) * | 2000-09-22 | 2005-01-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Cyclic delay diversity for mitigating intersymbol interference in OFDM systems |
US6778513B2 (en) | 2000-09-29 | 2004-08-17 | Arraycomm, Inc. | Method and apparatus for separting multiple users in a shared-channel communication system |
US7349371B2 (en) | 2000-09-29 | 2008-03-25 | Arraycomm, Llc | Selecting random access channels |
US6658258B1 (en) | 2000-09-29 | 2003-12-02 | Lucent Technologies Inc. | Method and apparatus for estimating the location of a mobile terminal |
US6496790B1 (en) | 2000-09-29 | 2002-12-17 | Intel Corporation | Management of sensors in computer systems |
JP2002111556A (ja) | 2000-10-02 | 2002-04-12 | Ntt Docomo Inc | 基地局装置 |
KR100452536B1 (ko) | 2000-10-02 | 2004-10-12 | 가부시키가이샤 엔.티.티.도코모 | 이동통신기지국 장치 |
US7072315B1 (en) | 2000-10-10 | 2006-07-04 | Adaptix, Inc. | Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks |
FR2815507B1 (fr) | 2000-10-16 | 2003-01-31 | Cit Alcatel | Procede de gestion des ressources radio dans un reseau de telecommunication interactif |
US6704571B1 (en) * | 2000-10-17 | 2004-03-09 | Cisco Technology, Inc. | Reducing data loss during cell handoffs |
US6870808B1 (en) | 2000-10-18 | 2005-03-22 | Adaptix, Inc. | Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks |
EP1328528B1 (en) | 2000-10-20 | 2004-12-29 | Sandoz Ag | Pharmaceutical compositions comprising clavulanic acid |
AU766996B2 (en) | 2000-10-20 | 2003-10-30 | Samsung Electronics Co., Ltd. | Apparatus and method for determining a data rate of packet data in a mobile communication system |
US6907270B1 (en) | 2000-10-23 | 2005-06-14 | Qualcomm Inc. | Method and apparatus for reduced rank channel estimation in a communications system |
US6788959B2 (en) | 2000-10-30 | 2004-09-07 | Nokia Corporation | Method and apparatus for transmitting and receiving dynamic configuration parameters in a third generation cellular telephone network |
EP1204217B1 (en) | 2000-11-03 | 2010-05-19 | Sony Deutschland GmbH | Transmission power control scheme for OFDM communication links |
US6567387B1 (en) | 2000-11-07 | 2003-05-20 | Intel Corporation | System and method for data transmission from multiple wireless base transceiver stations to a subscriber unit |
AU2001293069B2 (en) | 2000-11-07 | 2005-12-15 | Nokia Corporation | System for uplink scheduling of packet based data traffic in wireless system |
US20020090024A1 (en) | 2000-11-15 | 2002-07-11 | Tan Keng Tiong | Method and apparatus for non-linear code-division multiple access technology |
DE60028838T2 (de) | 2000-11-17 | 2006-12-07 | Nokia Corp. | Verfahren, vorrichtungen und telekommunikationsnetzwerk zum regeln der antennengewichte eines transceivers |
EP1338166B1 (en) | 2000-11-28 | 2008-01-09 | Telefonaktiebolaget LM Ericsson (publ) | Release of user equipment using a page procedure in a cellular communication system |
GB0029424D0 (en) | 2000-12-02 | 2001-01-17 | Koninkl Philips Electronics Nv | Radio communication system |
JP4625611B2 (ja) | 2000-12-11 | 2011-02-02 | シャープ株式会社 | 無線通信システム |
US20020077152A1 (en) | 2000-12-15 | 2002-06-20 | Johnson Thomas J. | Wireless communication methods and systems using multiple overlapping sectored cells |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
KR100688107B1 (ko) | 2000-12-15 | 2007-03-02 | 아답틱스, 인코포레이티드 | 직교 주파수 분할 다중 접속을 이용하는 시스템에 대한서브캐리어 선택 방법 |
CA2431502C (en) | 2000-12-15 | 2012-07-17 | Broadstorm Telecommunications, Inc. | Multi-carrier communications with adaptive cluster configuration and switching |
US6862268B2 (en) | 2000-12-29 | 2005-03-01 | Nortel Networks, Ltd | Method and apparatus for managing a CDMA supplemental channel |
US6920119B2 (en) | 2001-01-09 | 2005-07-19 | Motorola, Inc. | Method for scheduling and allocating data transmissions in a broad-band communications system |
US6829293B2 (en) | 2001-01-16 | 2004-12-07 | Mindspeed Technologies, Inc. | Method and apparatus for line probe signal processing |
US6801790B2 (en) | 2001-01-17 | 2004-10-05 | Lucent Technologies Inc. | Structure for multiple antenna configurations |
US6813284B2 (en) | 2001-01-17 | 2004-11-02 | Qualcomm Incorporated | Method and apparatus for allocating data streams given transmission time interval (TTI) constraints |
US7164669B2 (en) * | 2001-01-19 | 2007-01-16 | Adaptix, Inc. | Multi-carrier communication with time division multiplexing and carrier-selective loading |
EP1227601A1 (en) | 2001-01-25 | 2002-07-31 | TELEFONAKTIEBOLAGET L M ERICSSON (publ) | Downlink scheduling using parallel code trees |
US6954448B2 (en) | 2001-02-01 | 2005-10-11 | Ipr Licensing, Inc. | Alternate channel for carrying selected message types |
RU2192094C1 (ru) | 2001-02-05 | 2002-10-27 | Гармонов Александр Васильевич | Способ когерентной разнесенной передачи сигнала |
FR2820574B1 (fr) | 2001-02-08 | 2005-08-05 | Wavecom Sa | Procede d'extraction d'un motif de symboles de reference servant a estimer la fonction de transfert d'un canal de transmission, signal, dispositif et procedes correspondants |
US7120134B2 (en) | 2001-02-15 | 2006-10-10 | Qualcomm, Incorporated | Reverse link channel architecture for a wireless communication system |
US6985453B2 (en) | 2001-02-15 | 2006-01-10 | Qualcomm Incorporated | Method and apparatus for link quality feedback in a wireless communication system |
US6975868B2 (en) | 2001-02-21 | 2005-12-13 | Qualcomm Incorporated | Method and apparatus for IS-95B reverse link supplemental code channel frame validation and fundamental code channel rate decision improvement |
US20020160781A1 (en) | 2001-02-23 | 2002-10-31 | Gunnar Bark | System, method and apparatus for facilitating resource allocation in a communication system |
US6937641B2 (en) | 2001-02-28 | 2005-08-30 | Golden Bridge Technology, Inc. | Power-controlled random access |
US6930470B2 (en) | 2001-03-01 | 2005-08-16 | Nortel Networks Limited | System and method for code division multiple access communication in a wireless communication environment |
US6675012B2 (en) | 2001-03-08 | 2004-01-06 | Nokia Mobile Phones, Ltd. | Apparatus, and associated method, for reporting a measurement summary in a radio communication system |
US6940827B2 (en) | 2001-03-09 | 2005-09-06 | Adaptix, Inc. | Communication system using OFDM for one direction and DSSS for another direction |
US6478422B1 (en) | 2001-03-19 | 2002-11-12 | Richard A. Hansen | Single bifocal custom shooters glasses |
US6934340B1 (en) | 2001-03-19 | 2005-08-23 | Cisco Technology, Inc. | Adaptive control system for interference rejections in a wireless communications system |
US6771706B2 (en) * | 2001-03-23 | 2004-08-03 | Qualcomm Incorporated | Method and apparatus for utilizing channel state information in a wireless communication system |
US6748024B2 (en) | 2001-03-28 | 2004-06-08 | Nokia Corporation | Non-zero complex weighted space-time code for multiple antenna transmission |
US7042897B1 (en) | 2001-04-05 | 2006-05-09 | Arcwave, Inc | Medium access control layer protocol in a distributed environment |
US6859503B2 (en) | 2001-04-07 | 2005-02-22 | Motorola, Inc. | Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel |
US7145959B2 (en) | 2001-04-25 | 2006-12-05 | Magnolia Broadband Inc. | Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations |
US6625172B2 (en) | 2001-04-26 | 2003-09-23 | Joseph P. Odenwalder | Rescheduling scheduled transmissions |
US7230941B2 (en) | 2001-04-26 | 2007-06-12 | Qualcomm Incorporated | Preamble channel decoding |
US6611231B2 (en) | 2001-04-27 | 2003-08-26 | Vivato, Inc. | Wireless packet switched communication systems and networks using adaptively steered antenna arrays |
US7188300B2 (en) * | 2001-05-01 | 2007-03-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Flexible layer one for radio interface to PLMN |
US7042856B2 (en) | 2001-05-03 | 2006-05-09 | Qualcomm, Incorporation | Method and apparatus for controlling uplink transmissions of a wireless communication system |
EP1255369A1 (en) | 2001-05-04 | 2002-11-06 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Link adaptation for wireless MIMO transmission schemes |
US6785341B2 (en) * | 2001-05-11 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information |
US6662024B2 (en) | 2001-05-16 | 2003-12-09 | Qualcomm Incorporated | Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system |
US7047016B2 (en) | 2001-05-16 | 2006-05-16 | Qualcomm, Incorporated | Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system |
US6751187B2 (en) * | 2001-05-17 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
DE60215073T2 (de) * | 2001-05-17 | 2007-05-16 | Samsung Electronics Co., Ltd., Suwon | Mobiles Kommunikationsgerät mit Gruppenantenne und mobiles kommunikationsverfahren dafür |
FR2825208B1 (fr) | 2001-05-22 | 2004-07-09 | Cit Alcatel | Procede d'attribution de ressources en communication dans un systeme de telecommunications du type mf-tdma |
US7190734B2 (en) | 2001-05-25 | 2007-03-13 | Regents Of The University Of Minnesota | Space-time coded transmissions within a wireless communication network |
US6904097B2 (en) | 2001-06-01 | 2005-06-07 | Motorola, Inc. | Method and apparatus for adaptive signaling in a QAM communication system |
US20020193146A1 (en) | 2001-06-06 | 2002-12-19 | Mark Wallace | Method and apparatus for antenna diversity in a wireless communication system |
US7206350B2 (en) | 2001-06-11 | 2007-04-17 | Unique Broadband Systems, Inc. | OFDM multiple sub-channel communication system |
US7212564B2 (en) | 2001-06-21 | 2007-05-01 | Qualcomm Incorporated | Method of tone allocation for tone hopping sequences |
US7027523B2 (en) | 2001-06-22 | 2006-04-11 | Qualcomm Incorporated | Method and apparatus for transmitting data in a time division duplexed (TDD) communication system |
WO2003010984A1 (en) | 2001-06-27 | 2003-02-06 | Nortel Networks Limited | Communication of control information in wireless communication systems |
US6963543B2 (en) | 2001-06-29 | 2005-11-08 | Qualcomm Incorporated | Method and system for group call service |
WO2003001981A2 (en) | 2001-06-29 | 2003-01-09 | The Government Of The United State Of America As Represent By The Secretary Of The Department Of Health And Human Services | Method of promoting engraftment of a donor transplant in a recipient host |
GB0116015D0 (en) | 2001-06-29 | 2001-08-22 | Simoco Digital Systems Ltd | Communications systems |
JP2003018054A (ja) | 2001-07-02 | 2003-01-17 | Ntt Docomo Inc | 無線通信方法及びシステム並びに通信装置 |
US6751444B1 (en) | 2001-07-02 | 2004-06-15 | Broadstorm Telecommunications, Inc. | Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems |
DE10132492A1 (de) | 2001-07-03 | 2003-01-23 | Hertz Inst Heinrich | Adaptives Signalverarbeitungsverfahren zur bidirektionalen Funkübertragung in einem MIMO-Kanal und MIMO-System zur Verfahrensdurchführung |
JP3607643B2 (ja) | 2001-07-13 | 2005-01-05 | 松下電器産業株式会社 | マルチキャリア送信装置、マルチキャリア受信装置、およびマルチキャリア無線通信方法 |
US7197282B2 (en) | 2001-07-26 | 2007-03-27 | Ericsson Inc. | Mobile station loop-back signal processing |
US7236536B2 (en) * | 2001-07-26 | 2007-06-26 | Lucent Technologies Inc. | Method and apparatus for detection and decoding of signals received from a linear propagation channel |
US20030027579A1 (en) * | 2001-08-03 | 2003-02-06 | Uwe Sydon | System for and method of providing an air interface with variable data rate by switching the bit time |
JP4318412B2 (ja) | 2001-08-08 | 2009-08-26 | 富士通株式会社 | 通信システムにおける送受信装置及び送受信方法 |
US6776765B2 (en) | 2001-08-21 | 2004-08-17 | Synovis Life Technologies, Inc. | Steerable stylet |
JP4127757B2 (ja) | 2001-08-21 | 2008-07-30 | 株式会社エヌ・ティ・ティ・ドコモ | 無線通信システム、通信端末装置、及びバースト信号送信方法 |
KR100459557B1 (ko) * | 2001-08-23 | 2004-12-03 | 삼성전자주식회사 | 고속 순방향 패킷 접속 통신 시스템에서 데이터 상태정보를 나타내기 위한 혼화 자동 재전송 요구 채널 번호할당 방법 |
JP2003069472A (ja) | 2001-08-24 | 2003-03-07 | Matsushita Electric Ind Co Ltd | 受信端末装置及び通信システム |
KR100474689B1 (ko) | 2001-08-30 | 2005-03-08 | 삼성전자주식회사 | 이동통신 시스템에서 소프트 핸드오프 도중의 전력제어 방법 |
DE60131576T2 (de) * | 2001-09-05 | 2008-09-25 | Nokia Corp. | Rückgekoppeltes regelungsverfahren für mehrere sendeantennenkeulen und entsprechender transceiver |
WO2003024034A1 (en) * | 2001-09-07 | 2003-03-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangements to achieve a dynamic resource distribution policy in packet based communication networks |
FR2829642B1 (fr) | 2001-09-12 | 2004-01-16 | Eads Defence & Security Ntwk | Signal multiporteuses, procede de poursuite d'un canal de transmission a partir d'un tel signal et dispositif pour sa mise en oeuvre |
US7106319B2 (en) | 2001-09-14 | 2006-09-12 | Seiko Epson Corporation | Power supply circuit, voltage conversion circuit, semiconductor device, display device, display panel, and electronic equipment |
WO2003028302A2 (en) * | 2001-09-24 | 2003-04-03 | Atheros Communications, Inc. | Method and system for variable rate acknowledgement for wireless communication protocols |
JP2003101515A (ja) | 2001-09-25 | 2003-04-04 | Sony Corp | 無線通信システム、基地局、移動局、送信制御方法及びプログラム格納媒体 |
KR100440182B1 (ko) * | 2001-09-29 | 2004-07-14 | 삼성전자주식회사 | 음영지역에서의 퀵페이징 방법 |
RU2207723C1 (ru) | 2001-10-01 | 2003-06-27 | Военный университет связи | Способ распределения ресурсов в системе электросвязи с множественным доступом |
US7218906B2 (en) | 2001-10-04 | 2007-05-15 | Wisconsin Alumni Research Foundation | Layered space time processing in a multiple antenna system |
US7548506B2 (en) | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
US7773699B2 (en) * | 2001-10-17 | 2010-08-10 | Nortel Networks Limited | Method and apparatus for channel quality measurements |
KR100533205B1 (ko) * | 2001-10-17 | 2005-12-05 | 닛본 덴끼 가부시끼가이샤 | 이동 통신 시스템, 통신 제어 방법, 이것에 사용되는기지국 및 이동국 |
JP3675433B2 (ja) | 2001-10-17 | 2005-07-27 | 日本電気株式会社 | 移動通信システム及び通信制御方法並びにそれに用いる基地局、移動局 |
US7349667B2 (en) | 2001-10-19 | 2008-03-25 | Texas Instruments Incorporated | Simplified noise estimation and/or beamforming for wireless communications |
KR100452639B1 (ko) | 2001-10-20 | 2004-10-14 | 한국전자통신연구원 | 위성 이동 통신 시스템에서 공통 패킷 채널 접속 방법 |
KR100547847B1 (ko) | 2001-10-26 | 2006-01-31 | 삼성전자주식회사 | 이동통신 시스템에서 역방향 링크의 제어 장치 및 방법 |
US7164649B2 (en) | 2001-11-02 | 2007-01-16 | Qualcomm, Incorporated | Adaptive rate control for OFDM communication system |
US20030086393A1 (en) | 2001-11-02 | 2003-05-08 | Subramanian Vasudevan | Method for allocating wireless communication resources |
US6909707B2 (en) | 2001-11-06 | 2005-06-21 | Motorola, Inc. | Method and apparatus for pseudo-random noise offset reuse in a multi-sector CDMA system |
US20030125040A1 (en) | 2001-11-06 | 2003-07-03 | Walton Jay R. | Multiple-access multiple-input multiple-output (MIMO) communication system |
US7453801B2 (en) | 2001-11-08 | 2008-11-18 | Qualcomm Incorporated | Admission control and resource allocation in a communication system supporting application flows having quality of service requirements |
EP1444804B1 (en) | 2001-11-13 | 2013-02-27 | Telcordia Technologies, Inc. | Method and system for spectrally compatible remote terminal adsl deployment |
GB2382265B (en) | 2001-11-14 | 2004-06-09 | Toshiba Res Europ Ltd | Emergency rescue aid |
SE0103853D0 (sv) | 2001-11-15 | 2001-11-15 | Ericsson Telefon Ab L M | Method and system of retransmission |
JP3637965B2 (ja) | 2001-11-22 | 2005-04-13 | 日本電気株式会社 | 無線通信システム |
TW595857U (en) | 2001-11-29 | 2004-06-21 | Us | 091219345 |
US7154936B2 (en) | 2001-12-03 | 2006-12-26 | Qualcomm, Incorporated | Iterative detection and decoding for a MIMO-OFDM system |
EP1451974B1 (en) | 2001-12-03 | 2009-08-05 | Nokia Corporation | Policy based mechanisms for selecting access routers and mobile context |
JP3895165B2 (ja) | 2001-12-03 | 2007-03-22 | 株式会社エヌ・ティ・ティ・ドコモ | 通信制御システム、通信制御方法、通信基地局及び移動端末 |
US6799043B2 (en) | 2001-12-04 | 2004-09-28 | Qualcomm, Incorporated | Method and apparatus for a reverse link supplemental channel scheduling |
JP3955463B2 (ja) | 2001-12-05 | 2007-08-08 | ソフトバンクテレコム株式会社 | 直交周波数分割多重通信システム |
US20030112745A1 (en) | 2001-12-17 | 2003-06-19 | Xiangyang Zhuang | Method and system of operating a coded OFDM communication system |
US7054301B1 (en) | 2001-12-31 | 2006-05-30 | Arraycomm, Llc. | Coordinated hopping in wireless networks using adaptive antenna arrays |
US7020110B2 (en) | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
WO2003061170A1 (fr) | 2002-01-10 | 2003-07-24 | Fujitsu Limited | Procede de multiplexage de pilote dans un systeme ofdm et procede de reception ofdm |
DE10240138A1 (de) | 2002-01-18 | 2003-08-14 | Siemens Ag | Dynamische Zuordnung von Funkressourcen in einem Funk-Kommunikationssystem |
US6954622B2 (en) | 2002-01-29 | 2005-10-11 | L-3 Communications Corporation | Cooperative transmission power control method and system for CDMA communication systems |
US7006557B2 (en) | 2002-01-31 | 2006-02-28 | Qualcomm Incorporated | Time tracking loop for diversity pilots |
US20030142648A1 (en) | 2002-01-31 | 2003-07-31 | Samsung Electronics Co., Ltd. | System and method for providing a continuous high speed packet data handoff |
JP2003235072A (ja) | 2002-02-06 | 2003-08-22 | Ntt Docomo Inc | 無線リソース割当て方法、無線リソース割当て装置及び移動通信システム |
GB2386513B (en) | 2002-02-07 | 2004-08-25 | Samsung Electronics Co Ltd | Apparatus and method for transmitting/receiving serving hs-scch set information in an hsdpa communication system |
US7031742B2 (en) | 2002-02-07 | 2006-04-18 | Qualcomm Incorporation | Forward and reverse link power control of serving and non-serving base stations in a wireless communication system |
RU2237379C2 (ru) | 2002-02-08 | 2004-09-27 | Самсунг Электроникс | Способ формирования диаграммы направленности адаптивной антенной решетки базовой станции и устройство для его реализации (варианты) |
US7009500B2 (en) * | 2002-02-13 | 2006-03-07 | Ford Global Technologies, Llc | Method for operating a pre-crash sensing system in a vehicle having a countermeasure system using stereo cameras |
WO2003069832A1 (de) | 2002-02-13 | 2003-08-21 | Siemens Aktiengesellschaft | Methode zum beamforming eines mehrnutzempfängers mit kanalschätzung |
IL151937A0 (en) | 2002-02-13 | 2003-07-31 | Witcom Ltd | Near-field spatial multiplexing |
US7050759B2 (en) | 2002-02-19 | 2006-05-23 | Qualcomm Incorporated | Channel quality feedback mechanism and method |
JP2003249907A (ja) | 2002-02-22 | 2003-09-05 | Hitachi Kokusai Electric Inc | Ofdm方式の伝送装置 |
US6862271B2 (en) | 2002-02-26 | 2005-03-01 | Qualcomm Incorporated | Multiple-input, multiple-output (MIMO) systems with multiple transmission modes |
US6985853B2 (en) * | 2002-02-28 | 2006-01-10 | Broadcom Corporation | Compressed audio stream data decoder memory sharing techniques |
US6636568B2 (en) | 2002-03-01 | 2003-10-21 | Qualcomm | Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system |
US7099299B2 (en) | 2002-03-04 | 2006-08-29 | Agency For Science, Technology And Research | CDMA system with frequency domain equalization |
US7039356B2 (en) | 2002-03-12 | 2006-05-02 | Blue7 Communications | Selecting a set of antennas for use in a wireless communication system |
KR100464014B1 (ko) | 2002-03-21 | 2004-12-30 | 엘지전자 주식회사 | 다중 입출력 이동 통신 시스템에서의 폐루프 신호 처리 방법 |
US7197084B2 (en) | 2002-03-27 | 2007-03-27 | Qualcomm Incorporated | Precoding for a multipath channel in a MIMO system |
JP2003292667A (ja) | 2002-03-29 | 2003-10-15 | Jsr Corp | 架橋発泡用熱可塑性エラストマー組成物、成形品の製造方法、および成形品 |
US6741587B2 (en) | 2002-04-02 | 2004-05-25 | Nokia Corporation | Inter-frequency measurements with MIMO terminals |
US6850741B2 (en) | 2002-04-04 | 2005-02-01 | Agency For Science, Technology And Research | Method for selecting switched orthogonal beams for downlink diversity transmission |
US7508804B2 (en) | 2002-04-05 | 2009-03-24 | Alcatel-Lucent Usa Inc. | Shared signaling for multiple user equipment |
KR100896682B1 (ko) | 2002-04-09 | 2009-05-14 | 삼성전자주식회사 | 송/수신 다중 안테나를 포함하는 이동 통신 장치 및 방법 |
WO2003088538A1 (fr) | 2002-04-15 | 2003-10-23 | Matsushita Electric Industrial Co., Ltd. | Recepteur et procede de reception associe |
US7522673B2 (en) | 2002-04-22 | 2009-04-21 | Regents Of The University Of Minnesota | Space-time coding using estimated channel information |
JP2003318857A (ja) | 2002-04-25 | 2003-11-07 | Mitsubishi Electric Corp | デジタル放送受信機 |
ES2351438T3 (es) | 2002-04-25 | 2011-02-04 | Powerwave Cognition, Inc. | Utilización dinámica de recursos inalámbricos. |
US6839336B2 (en) | 2002-04-29 | 2005-01-04 | Qualcomm, Incorporated | Acknowledging broadcast transmissions |
US7161971B2 (en) | 2002-04-29 | 2007-01-09 | Qualcomm, Incorporated | Sending transmission format information on dedicated channels |
US7170876B2 (en) | 2002-04-30 | 2007-01-30 | Qualcomm, Inc. | Outer-loop scheduling design for communication systems with channel quality feedback mechanisms |
US7170937B2 (en) * | 2002-05-01 | 2007-01-30 | Texas Instruments Incorporated | Complexity-scalable intra-frame prediction technique |
US6985756B2 (en) | 2002-05-09 | 2006-01-10 | Casabyte, Inc. | Method, apparatus and article to remotely associate wireless communications devices with subscriber identities and/or proxy wireless communications devices |
JP4334274B2 (ja) | 2002-05-16 | 2009-09-30 | 株式会社エヌ・ティ・ティ・ドコモ | マルチキャリア伝送用送信機及びマルチキャリア伝送方法 |
KR100689399B1 (ko) | 2002-05-17 | 2007-03-08 | 삼성전자주식회사 | 이동통신시스템에서 스마트 안테나의 순방향 송신빔 형성장치 및 방법 |
JP2003347985A (ja) | 2002-05-22 | 2003-12-05 | Fujitsu Ltd | 無線基地局装置及びその省電力方法 |
JP4067873B2 (ja) | 2002-05-24 | 2008-03-26 | 三菱電機株式会社 | 無線伝送装置 |
GB0212165D0 (en) * | 2002-05-27 | 2002-07-03 | Nokia Corp | A wireless system |
US6917602B2 (en) | 2002-05-29 | 2005-07-12 | Nokia Corporation | System and method for random access channel capture with automatic retransmission request |
US7899067B2 (en) | 2002-05-31 | 2011-03-01 | Cisco Technology, Inc. | Method and apparatus for generating and using enhanced tree bitmap data structures in determining a longest prefix match |
US8699505B2 (en) | 2002-05-31 | 2014-04-15 | Qualcomm Incorporated | Dynamic channelization code allocation |
US7366223B1 (en) | 2002-06-06 | 2008-04-29 | Arraycomm, Llc | Modifying hopping sequences in wireless networks |
AU2003237377A1 (en) | 2002-06-07 | 2003-12-22 | Nokia Corporation | Apparatus and an associated method, by which to facilitate scheduling of data communications ina radio communications system |
KR100548311B1 (ko) | 2002-06-07 | 2006-02-02 | 엘지전자 주식회사 | 이동 통신 시스템에서의 송신 다이버시티 장치와 방법 |
JP2004016238A (ja) | 2002-06-12 | 2004-01-22 | Toto Ltd | 手すり付ベンチ |
JP3751265B2 (ja) | 2002-06-20 | 2006-03-01 | 松下電器産業株式会社 | 無線通信システムおよびスケジューリング方法 |
US7184713B2 (en) * | 2002-06-20 | 2007-02-27 | Qualcomm, Incorporated | Rate control for multi-channel communication systems |
US7095709B2 (en) | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US7613248B2 (en) | 2002-06-24 | 2009-11-03 | Qualcomm Incorporated | Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems |
US7483408B2 (en) | 2002-06-26 | 2009-01-27 | Nortel Networks Limited | Soft handoff method for uplink wireless communications |
US20040077379A1 (en) | 2002-06-27 | 2004-04-22 | Martin Smith | Wireless transmitter, transceiver and method |
ATE308172T1 (de) | 2002-06-27 | 2005-11-15 | Siemens Ag | Anordnung und verfahren zur datenübertragung in einem mehrfacheingabe mehrfachausgabe funkkommunikationssystem |
EP1520360B1 (en) * | 2002-06-27 | 2007-01-24 | Koninklijke Philips Electronics N.V. | Measurement of channel characterisitics in a communication system |
US7551546B2 (en) | 2002-06-27 | 2009-06-23 | Nortel Networks Limited | Dual-mode shared OFDM methods/transmitters, receivers and systems |
US7043274B2 (en) | 2002-06-28 | 2006-05-09 | Interdigital Technology Corporation | System for efficiently providing coverage of a sectorized cell for common and dedicated channels utilizing beam forming and sweeping |
US7372911B1 (en) | 2002-06-28 | 2008-05-13 | Arraycomm, Llc | Beam forming and transmit diversity in a multiple array radio communications system |
KR100640470B1 (ko) | 2002-06-29 | 2006-10-30 | 삼성전자주식회사 | 패킷 서비스 통신 시스템에서 전송 안테나 다이버시티방식을 사용하여 데이터를 전송 장치 및 방법 |
CN1219372C (zh) | 2002-07-08 | 2005-09-14 | 华为技术有限公司 | 一种实现多媒体广播和多播业务的传输方法 |
KR100630112B1 (ko) | 2002-07-09 | 2006-09-27 | 삼성전자주식회사 | 이동통신시스템의 적응형 채널 추정장치 및 방법 |
US7243150B2 (en) | 2002-07-10 | 2007-07-10 | Radwin Ltd. | Reducing the access delay for transmitting processed data over transmission data |
KR100915750B1 (ko) | 2002-07-16 | 2009-09-04 | 파나소닉 주식회사 | 통신 방법 및 그것을 이용한 송신 장치와 수신장치 |
US20040017785A1 (en) | 2002-07-16 | 2004-01-29 | Zelst Allert Van | System for transporting multiple radio frequency signals of a multiple input, multiple output wireless communication system to/from a central processing base station |
US20050259757A1 (en) | 2002-07-17 | 2005-11-24 | Soma Networks, Inc. | Frequency domain equalization in communications systems with scrambling |
CN1669264A (zh) | 2002-07-17 | 2005-09-14 | 皇家飞利浦电子股份有限公司 | 用于准同步系统的时间-频率交织mc-cdma |
ES2298580T3 (es) | 2002-07-18 | 2008-05-16 | Interdigital Technology Corporation | Asignacion de codigo de factor de ensanchamiento variable ortogonal (ovsf). |
US7020446B2 (en) | 2002-07-31 | 2006-03-28 | Mitsubishi Electric Research Laboratories, Inc. | Multiple antennas at transmitters and receivers to achieving higher diversity and data rates in MIMO systems |
JP4022744B2 (ja) | 2002-08-01 | 2007-12-19 | 日本電気株式会社 | 移動通信システム及びベストセル変更方法並びにそれに用いる基地局制御装置 |
WO2004014001A1 (en) | 2002-08-02 | 2004-02-12 | Nms Communications | Methods and apparatus for network signal aggregation and bandwidth reduction |
US8179864B2 (en) * | 2002-08-06 | 2012-05-15 | Rockstar Bidco Lp | Method of controlling a communications link |
JP4047655B2 (ja) | 2002-08-07 | 2008-02-13 | 京セラ株式会社 | 無線通信システム |
US6788963B2 (en) | 2002-08-08 | 2004-09-07 | Flarion Technologies, Inc. | Methods and apparatus for operating mobile nodes in multiple a states |
US7418241B2 (en) | 2002-08-09 | 2008-08-26 | Qualcomm Incorporated | System and techniques for enhancing the reliability of feedback in a wireless communications system |
US7558193B2 (en) | 2002-08-12 | 2009-07-07 | Starent Networks Corporation | Redundancy in voice and data communications systems |
US7180627B2 (en) | 2002-08-16 | 2007-02-20 | Paxar Corporation | Hand-held portable printer with RFID read/write capability |
DE10238796B4 (de) | 2002-08-23 | 2006-09-14 | Siemens Ag | Verfahren zur Richtungsbestimmung der Position einer Mobilstation relativ zu einer Basisstation, Mobilfunksystem sowie Einrichtung zur Richtungsbestimmung |
JP3999605B2 (ja) | 2002-08-23 | 2007-10-31 | 株式会社エヌ・ティ・ティ・ドコモ | 基地局、移動通信システム及び通信方法 |
US7050405B2 (en) | 2002-08-23 | 2006-05-23 | Qualcomm Incorporated | Method and system for a data transmission in a communication system |
US6985498B2 (en) * | 2002-08-26 | 2006-01-10 | Flarion Technologies, Inc. | Beacon signaling in a wireless system |
US6940917B2 (en) | 2002-08-27 | 2005-09-06 | Qualcomm, Incorporated | Beam-steering and beam-forming for wideband MIMO/MISO systems |
JP2004096142A (ja) | 2002-08-29 | 2004-03-25 | Hitachi Kokusai Electric Inc | 地区エリアポーリング方式 |
US7167916B2 (en) | 2002-08-30 | 2007-01-23 | Unisys Corporation | Computer OS dispatcher operation with virtual switching queue and IP queues |
KR100831987B1 (ko) | 2002-08-30 | 2008-05-23 | 삼성전자주식회사 | 다중 사용자를 위한 다중 안테나를 이용한 송수신 장치 |
US7519032B2 (en) | 2002-09-04 | 2009-04-14 | Koninklijke Philips Electronics N.V. | Apparatus and method for providing QoS service schedule and bandwidth allocation to a wireless station |
IL151644A (en) | 2002-09-05 | 2008-11-26 | Fazan Comm Llc | Allocation of radio resources in a cdma 2000 cellular system |
US7227854B2 (en) * | 2002-09-06 | 2007-06-05 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting CQI information in a CDMA communication system employing an HSDPA scheme |
US7260153B2 (en) | 2002-09-09 | 2007-08-21 | Mimopro Ltd. | Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels |
US6776165B2 (en) | 2002-09-12 | 2004-08-17 | The Regents Of The University Of California | Magnetic navigation system for diagnosis, biopsy and drug delivery vehicles |
WO2004028037A1 (ja) | 2002-09-20 | 2004-04-01 | Mitsubishi Denki Kabushiki Kaisha | 無線通信システム |
US7209712B2 (en) | 2002-09-23 | 2007-04-24 | Qualcomm, Incorporated | Mean square estimation of channel quality measure |
GB0222555D0 (en) | 2002-09-28 | 2002-11-06 | Koninkl Philips Electronics Nv | Packet data transmission system |
KR100933155B1 (ko) | 2002-09-30 | 2009-12-21 | 삼성전자주식회사 | 주파수분할다중접속 이동통신시스템에서 가상 셀의 자원할당장치 및 방법 |
US7317680B2 (en) | 2002-10-01 | 2008-01-08 | Nortel Networks Limited | Channel mapping for OFDM |
US7412212B2 (en) | 2002-10-07 | 2008-08-12 | Nokia Corporation | Communication system |
JP4602641B2 (ja) | 2002-10-18 | 2010-12-22 | 株式会社エヌ・ティ・ティ・ドコモ | 信号伝送システム、信号伝送方法及び送信機 |
KR100461547B1 (ko) | 2002-10-22 | 2004-12-16 | 한국전자통신연구원 | 디에스/시디엠에이 미모 안테나 시스템에서 보다 나은수신 다이버시티 이득을 얻기 위한 전송 시스템 |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US7477618B2 (en) | 2002-10-25 | 2009-01-13 | Qualcomm Incorporated | Method and apparatus for stealing power or code for data channel operations |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
JP2006504324A (ja) | 2002-10-26 | 2006-02-02 | エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート | combパターンシンボルの周波数跳躍直交周波数分割多重接続方法 |
US7023880B2 (en) | 2002-10-28 | 2006-04-04 | Qualcomm Incorporated | Re-formatting variable-rate vocoder frames for inter-system transmissions |
EP1568155A4 (en) | 2002-10-29 | 2011-06-22 | Nokia Corp | LIGHT COMPLEXITY BEAMMER FOR MULTIPLE TRANSMITTERS AND RECEIVERS |
US7042857B2 (en) | 2002-10-29 | 2006-05-09 | Qualcom, Incorporated | Uplink pilot and signaling transmission in wireless communication systems |
US6928062B2 (en) | 2002-10-29 | 2005-08-09 | Qualcomm, Incorporated | Uplink pilot and signaling transmission in wireless communication systems |
US7197689B2 (en) | 2002-10-30 | 2007-03-27 | Nxp B.V. | Trellis-based receiver |
JP2004153676A (ja) | 2002-10-31 | 2004-05-27 | Mitsubishi Electric Corp | 通信装置、送信機および受信機 |
US6963959B2 (en) | 2002-10-31 | 2005-11-08 | International Business Machines Corporation | Storage system and method for reorganizing data to improve prefetch effectiveness and reduce seek distance |
JP2004158901A (ja) | 2002-11-01 | 2004-06-03 | Kddi Corp | Ofdm及びmc−cdmaを用いる送信装置、システム及び方法 |
US7680507B2 (en) | 2002-11-04 | 2010-03-16 | Alcatel-Lucent Usa Inc. | Shared control and signaling channel for users subscribing to data services in a communication system |
DE10254384B4 (de) | 2002-11-17 | 2005-11-17 | Siemens Ag | Bidirektionales Signalverarbeitungsverfahren für ein MIMO-System mit einer rangadaptiven Anpassung der Datenübertragungsrate |
JP4084639B2 (ja) * | 2002-11-19 | 2008-04-30 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信における受付制御方法、移動通信システム、移動局、受付制御装置及び受付制御用プログラム |
JP3796212B2 (ja) * | 2002-11-20 | 2006-07-12 | 松下電器産業株式会社 | 基地局装置及び送信割り当て制御方法 |
US20040098505A1 (en) | 2002-11-20 | 2004-05-20 | Clemmensen Daniel G. | Forwarding system with multiple logical sub-system functionality |
KR100479864B1 (ko) | 2002-11-26 | 2005-03-31 | 학교법인 중앙대학교 | 이동 통신 시스템에서의 하향링크 신호의 구성 방법과동기화 방법 및 그 장치 그리고 이를 이용한 셀 탐색 방법 |
WO2004051872A2 (en) | 2002-12-04 | 2004-06-17 | Interdigital Technology Corporation | Detection of channel quality indicator |
JP4350491B2 (ja) | 2002-12-05 | 2009-10-21 | パナソニック株式会社 | 無線通信システム、無線通信方法、及び無線通信装置 |
US8179833B2 (en) | 2002-12-06 | 2012-05-15 | Qualcomm Incorporated | Hybrid TDM/OFDM/CDM reverse link transmission |
US7272768B2 (en) | 2002-12-09 | 2007-09-18 | Broadcom Corporation | Edge incremental redundancy memory structure and memory management |
KR100507519B1 (ko) | 2002-12-13 | 2005-08-17 | 한국전자통신연구원 | Ofdma 기반 셀룰러 시스템의 하향링크를 위한 신호구성 방법 및 장치 |
US7508798B2 (en) | 2002-12-16 | 2009-03-24 | Nortel Networks Limited | Virtual mimo communication system |
KR100552669B1 (ko) | 2002-12-26 | 2006-02-20 | 한국전자통신연구원 | 층적 공간-시간 구조의 검파기를 갖는 다중 입출력시스템에 적용되는 적응 변복조 장치 및 그 방법 |
US6904550B2 (en) | 2002-12-30 | 2005-06-07 | Motorola, Inc. | Velocity enhancement for OFDM systems |
KR100606008B1 (ko) | 2003-01-04 | 2006-07-26 | 삼성전자주식회사 | 부호 분할 다중 접속 통신 시스템에서 역방향 데이터재전송 요청 송수신 장치 및 방법 |
JP4098096B2 (ja) | 2003-01-06 | 2008-06-11 | 三菱電機株式会社 | スペクトル拡散受信装置 |
US7280467B2 (en) | 2003-01-07 | 2007-10-09 | Qualcomm Incorporated | Pilot transmission schemes for wireless multi-carrier communication systems |
CN1302671C (zh) | 2003-01-07 | 2007-02-28 | 华为技术有限公司 | 一种第三方为接收方接收多媒体短消息付费的方法 |
US8400979B2 (en) | 2003-01-07 | 2013-03-19 | Qualcomm Incorporated | Forward link handoff for wireless communication systems with OFDM forward link and CDMA reverse link |
JP4139230B2 (ja) | 2003-01-15 | 2008-08-27 | 松下電器産業株式会社 | 送信装置及び送信方法 |
US7346018B2 (en) | 2003-01-16 | 2008-03-18 | Qualcomm, Incorporated | Margin control in a data communication system |
CN100417269C (zh) | 2003-01-20 | 2008-09-03 | 中兴通讯股份有限公司 | 智能天线波束切换方法 |
KR100580244B1 (ko) | 2003-01-23 | 2006-05-16 | 삼성전자주식회사 | 무선랜상의 핸드오프 방법 |
WO2004068721A2 (en) | 2003-01-28 | 2004-08-12 | Celletra Ltd. | System and method for load distribution between base station sectors |
JP4276009B2 (ja) | 2003-02-06 | 2009-06-10 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局、基地局、無線伝送プログラム、及び無線伝送方法 |
JP4514463B2 (ja) | 2003-02-12 | 2010-07-28 | パナソニック株式会社 | 送信装置及び無線通信方法 |
JP3740471B2 (ja) | 2003-02-13 | 2006-02-01 | 株式会社東芝 | Ofdm受信装置、半導体集積回路及びofdm受信方法 |
EP1593246A1 (en) | 2003-02-14 | 2005-11-09 | DoCoMo Communications Laboratories Europe GmbH | Two-dimensional channel estimation for multicarrier multiple input multiple outpout communication systems |
US8391249B2 (en) | 2003-02-18 | 2013-03-05 | Qualcomm Incorporated | Code division multiplexing commands on a code division multiplexed channel |
RU2368106C2 (ru) | 2003-02-18 | 2009-09-20 | Квэлкомм Инкорпорейтед | Планируемая и автономная передача и подтверждение приема |
US7660282B2 (en) | 2003-02-18 | 2010-02-09 | Qualcomm Incorporated | Congestion control in a wireless data network |
US7155236B2 (en) | 2003-02-18 | 2006-12-26 | Qualcomm Incorporated | Scheduled and autonomous transmission and acknowledgement |
AU2004213988B2 (en) | 2003-02-19 | 2009-09-10 | Qualcomm Incorporated | Methods and apparatus of enhanced coding in multi-user communications systems |
US7813322B2 (en) | 2003-02-19 | 2010-10-12 | Qualcomm Incorporated | Efficient automatic repeat request methods and apparatus |
WO2004077724A2 (en) | 2003-02-24 | 2004-09-10 | Autocell Laboratories, Inc. | System and method for channel selection in a wireless network |
US9544860B2 (en) | 2003-02-24 | 2017-01-10 | Qualcomm Incorporated | Pilot signals for use in multi-sector cells |
KR100539230B1 (ko) | 2003-02-26 | 2005-12-27 | 삼성전자주식회사 | 다양한 규격의 신호를 송수신 처리하는 물리층 장치, 이를구비한 무선 랜 시스템 및 그 무선 랜 방법 |
CN1754393B (zh) | 2003-02-27 | 2011-06-08 | 美商内数位科技公司 | 实施快速动态频道配置无线资源管理程序的方法 |
JP2004260658A (ja) | 2003-02-27 | 2004-09-16 | Matsushita Electric Ind Co Ltd | 無線lan装置 |
US7486735B2 (en) | 2003-02-28 | 2009-02-03 | Nortel Networks Limited | Sub-carrier allocation for OFDM |
KR100547758B1 (ko) | 2003-02-28 | 2006-01-31 | 삼성전자주식회사 | 초광대역 통신 시스템의 프리앰블 송수신 장치 및 방법 |
US20040181569A1 (en) | 2003-03-13 | 2004-09-16 | Attar Rashid Ahmed | Method and system for a data transmission in a communication system |
US6927728B2 (en) | 2003-03-13 | 2005-08-09 | Motorola, Inc. | Method and apparatus for multi-antenna transmission |
US20040179480A1 (en) | 2003-03-13 | 2004-09-16 | Attar Rashid Ahmed | Method and system for estimating parameters of a link for data transmission in a communication system |
US7746816B2 (en) | 2003-03-13 | 2010-06-29 | Qualcomm Incorporated | Method and system for a power control in a communication system |
US7130580B2 (en) | 2003-03-20 | 2006-10-31 | Lucent Technologies Inc. | Method of compensating for correlation between multiple antennas |
US7016319B2 (en) * | 2003-03-24 | 2006-03-21 | Motorola, Inc. | Method and apparatus for reducing co-channel interference in a communication system |
SE527445C2 (sv) | 2003-03-25 | 2006-03-07 | Telia Ab | Lägesanpassat skyddsintervall för OFDM-kommunikation |
JP4218387B2 (ja) | 2003-03-26 | 2009-02-04 | 日本電気株式会社 | 無線通信システム、基地局及びそれらに用いる無線リンク品質情報補正方法並びにそのプログラム |
US20040192386A1 (en) | 2003-03-26 | 2004-09-30 | Naveen Aerrabotu | Method and apparatus for multiple subscriber identities in a mobile communication device |
JP4181906B2 (ja) | 2003-03-26 | 2008-11-19 | 富士通株式会社 | 送信機及び受信機 |
JP4162522B2 (ja) | 2003-03-26 | 2008-10-08 | 三洋電機株式会社 | 無線基地装置、送信指向性制御方法、および送信指向性制御プログラム |
US7233634B1 (en) | 2003-03-27 | 2007-06-19 | Nortel Networks Limited | Maximum likelihood decoding |
AU2003212381A1 (en) | 2003-03-27 | 2004-10-18 | Docomo Communications Laboratories Europe Gmbh | Apparatus and method for estimating a plurality of channels |
GB2400280B (en) | 2003-04-02 | 2005-06-01 | Matsushita Electric Ind Co Ltd | Dynamic resource allocation in packet data transfer |
US7085574B2 (en) | 2003-04-15 | 2006-08-01 | Qualcomm, Incorporated | Grant channel assignment |
WO2004095730A1 (ja) | 2003-04-21 | 2004-11-04 | Mitsubishi Denki Kabushiki Kaisha | 無線通信装置、送信装置、受信装置および無線通信システム |
JP4740123B2 (ja) | 2003-04-23 | 2011-08-03 | クゥアルコム・インコーポレイテッド | 無線通信システムで性能を高める方法及び装置 |
US7640373B2 (en) | 2003-04-25 | 2009-12-29 | Motorola, Inc. | Method and apparatus for channel quality feedback within a communication system |
KR100942645B1 (ko) | 2003-04-29 | 2010-02-17 | 엘지전자 주식회사 | 이동통신 시스템에서의 신호전송 방법 및 장치 |
US20040219919A1 (en) | 2003-04-30 | 2004-11-04 | Nicholas Whinnett | Management of uplink scheduling modes in a wireless communication system |
US7013143B2 (en) * | 2003-04-30 | 2006-03-14 | Motorola, Inc. | HARQ ACK/NAK coding for a communication device during soft handoff |
US6824416B2 (en) | 2003-04-30 | 2004-11-30 | Agilent Technologies, Inc. | Mounting arrangement for plug-in modules |
US6993342B2 (en) * | 2003-05-07 | 2006-01-31 | Motorola, Inc. | Buffer occupancy used in uplink scheduling for a communication device |
US6882855B2 (en) | 2003-05-09 | 2005-04-19 | Motorola, Inc. | Method and apparatus for CDMA soft handoff for dispatch group members |
US7254158B2 (en) | 2003-05-12 | 2007-08-07 | Qualcomm Incorporated | Soft handoff with interference cancellation in a wireless frequency hopping communication system |
US7177297B2 (en) | 2003-05-12 | 2007-02-13 | Qualcomm Incorporated | Fast frequency hopping with a code division multiplexed pilot in an OFDMA system |
US6950319B2 (en) | 2003-05-13 | 2005-09-27 | Delta Electronics, Inc. | AC/DC flyback converter |
US7545867B1 (en) | 2003-05-14 | 2009-06-09 | Marvell International, Ltd. | Adaptive channel bandwidth selection for MIMO wireless systems |
EP1623512A1 (en) | 2003-05-15 | 2006-02-08 | Lg Electronics Inc. | Method and apparatus for allocating channelization codes for wireless communications |
US7181196B2 (en) | 2003-05-15 | 2007-02-20 | Lucent Technologies Inc. | Performing authentication in a communications system |
KR100526542B1 (ko) | 2003-05-15 | 2005-11-08 | 삼성전자주식회사 | 이동 통신 시스템에서 다중안테나를 사용하는송신다이버시티 방식을 사용하여 데이터를 송수신하는장치 및 방법 |
US20040228313A1 (en) | 2003-05-16 | 2004-11-18 | Fang-Chen Cheng | Method of mapping data for uplink transmission in communication systems |
WO2004105272A1 (ja) | 2003-05-20 | 2004-12-02 | Fujitsu Limited | 移動通信システムにおけるアプリケーションハンドオーバ方法並びに同移動通信システムに使用される移動管理ノード及び移動ノード |
US7454510B2 (en) | 2003-05-29 | 2008-11-18 | Microsoft Corporation | Controlled relay of media streams across network perimeters |
US7366137B2 (en) | 2003-05-31 | 2008-04-29 | Qualcomm Incorporated | Signal-to-noise estimation in wireless communication devices with receive diversity |
US8018902B2 (en) * | 2003-06-06 | 2011-09-13 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and apparatus for channel quality indicator determination |
US7079870B2 (en) | 2003-06-09 | 2006-07-18 | Ipr Licensing, Inc. | Compensation techniques for group delay effects in transmit beamforming radio communication |
WO2004114549A1 (en) | 2003-06-13 | 2004-12-29 | Nokia Corporation | Enhanced data only code division multiple access (cdma) system |
KR100547734B1 (ko) | 2003-06-13 | 2006-01-31 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식을 사용하는 이동 통신시스템에서 매체 접속 제어 계층의 동작 상태 제어 방법 |
JP2006527965A (ja) | 2003-06-18 | 2006-12-07 | サムスン エレクトロニクス カンパニー リミテッド | 直交周波数分割多重方式を使用する通信システムにおける基地局の識別のためのパイロットパターンを送受信する装置及び方法 |
US7236747B1 (en) | 2003-06-18 | 2007-06-26 | Samsung Electronics Co., Ltd. (SAIT) | Increasing OFDM transmit power via reduction in pilot tone |
CN1643867B (zh) | 2003-06-22 | 2010-06-23 | 株式会社Ntt都科摩 | 用于估计信道的设备和方法 |
KR20050000709A (ko) | 2003-06-24 | 2005-01-06 | 삼성전자주식회사 | 다중 접속 방식을 사용하는 통신 시스템의 데이터 송수신장치 및 방법 |
NZ526669A (en) * | 2003-06-25 | 2006-03-31 | Ind Res Ltd | Narrowband interference suppression for OFDM systems |
US7433661B2 (en) | 2003-06-25 | 2008-10-07 | Lucent Technologies Inc. | Method for improved performance and reduced bandwidth channel state information feedback in communication systems |
US7394865B2 (en) | 2003-06-25 | 2008-07-01 | Nokia Corporation | Signal constellations for multi-carrier systems |
ATE354211T1 (de) * | 2003-06-26 | 2007-03-15 | Mitsubishi Electric Corp | Verbesserte kugeldekodierung von in einem telekommunikationssystem gesendeten symbolen |
JP3746280B2 (ja) | 2003-06-27 | 2006-02-15 | 株式会社東芝 | 通信方法、通信システム及び通信装置 |
CN100473213C (zh) | 2003-06-30 | 2009-03-25 | 日本电气株式会社 | 无线通信系统和发射模式选择方法 |
US7522919B2 (en) | 2003-07-14 | 2009-04-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Enhancements to periodic silences in wireless communication systems |
KR100987286B1 (ko) | 2003-07-31 | 2010-10-12 | 삼성전자주식회사 | 무선 통신 시스템에서 다중접속 방법 및 그 제어 시스템 |
US8140980B2 (en) * | 2003-08-05 | 2012-03-20 | Verizon Business Global Llc | Method and system for providing conferencing services |
US7126928B2 (en) | 2003-08-05 | 2006-10-24 | Qualcomm Incorporated | Grant, acknowledgement, and rate control active sets |
CN1820438B (zh) | 2003-08-05 | 2010-09-22 | 意大利电信股份公司 | 在通信网中向附加业务路径提供连接保护的方法、相关网络 |
US7315527B2 (en) * | 2003-08-05 | 2008-01-01 | Qualcomm Incorporated | Extended acknowledgement and rate control channel |
US7969857B2 (en) * | 2003-08-07 | 2011-06-28 | Nortel Networks Limited | OFDM system and method employing OFDM symbols with known or information-containing prefixes |
US7460494B2 (en) | 2003-08-08 | 2008-12-02 | Intel Corporation | Adaptive signaling in multiple antenna systems |
KR101083144B1 (ko) | 2003-08-12 | 2011-11-11 | 파나소닉 주식회사 | 무선 통신 장치 및 파일럿 심볼 전송 방법 |
CA2535555A1 (en) | 2003-08-13 | 2005-03-03 | Flarion Technologies, Inc. | Methods and apparatus of power control in wireless communication systems |
DE60306519T2 (de) | 2003-08-14 | 2006-11-09 | Matsushita Electric Industrial Co., Ltd., Kadoma | Synchronisation von Basisstationen während Soft-Handover |
CN1284795C (zh) | 2003-08-15 | 2006-11-15 | 上海师范大学 | 磁性纳米粒子核酸分离器、及其制法和应用 |
RU2235429C1 (ru) | 2003-08-15 | 2004-08-27 | Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" | Способ частотно-временной синхронизации системы связи и устройство для его осуществления |
US7257167B2 (en) | 2003-08-19 | 2007-08-14 | The University Of Hong Kong | System and method for multi-access MIMO channels with feedback capacity constraint |
KR101109936B1 (ko) | 2003-08-20 | 2012-02-27 | 파나소닉 주식회사 | 무선 통신 장치 및 서브 캐리어의 할당 방법 |
US6925145B2 (en) * | 2003-08-22 | 2005-08-02 | General Electric Company | High speed digital radiographic inspection of piping |
US20050063298A1 (en) | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
JP4194091B2 (ja) | 2003-09-02 | 2008-12-10 | ソニー・エリクソン・モバイルコミュニケーションズ株式会社 | 無線通信システムおよび無線通信装置 |
US7221680B2 (en) | 2003-09-02 | 2007-05-22 | Qualcomm Incorporated | Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system |
US7400856B2 (en) | 2003-09-03 | 2008-07-15 | Motorola, Inc. | Method and apparatus for relay facilitated communications |
US20050047517A1 (en) | 2003-09-03 | 2005-03-03 | Georgios Giannakis B. | Adaptive modulation for multi-antenna transmissions with partial channel knowledge |
US7724827B2 (en) | 2003-09-07 | 2010-05-25 | Microsoft Corporation | Multi-layer run level encoding and decoding |
US8908496B2 (en) | 2003-09-09 | 2014-12-09 | Qualcomm Incorporated | Incremental redundancy transmission in a MIMO communication system |
US7356073B2 (en) | 2003-09-10 | 2008-04-08 | Nokia Corporation | Method and apparatus providing an advanced MIMO receiver that includes a signal-plus-residual-interference (SPRI) detector |
US6917821B2 (en) | 2003-09-23 | 2005-07-12 | Qualcomm, Incorporated | Successive interference cancellation receiver processing with selection diversity |
US20050068921A1 (en) | 2003-09-29 | 2005-03-31 | Jung-Tao Liu | Multiplexing of physical channels on the uplink |
KR100950668B1 (ko) | 2003-09-30 | 2010-04-02 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 방식을 사용하는 통신 시스템에서 업링크 파일럿 신호 송수신 장치 및 방법 |
KR20060097720A (ko) | 2003-09-30 | 2006-09-14 | 텔레폰악티에볼라겟엘엠에릭슨(펍) | 고속 무선 패킷 데이터 네트워크 내의 혼잡 제어용 방법 및장치 |
JP2005110130A (ja) | 2003-10-01 | 2005-04-21 | Samsung Electronics Co Ltd | 共通チャネル伝送システム、共通チャネル伝送方法及び通信プログラム |
US7230942B2 (en) | 2003-10-03 | 2007-06-12 | Qualcomm, Incorporated | Method of downlink resource allocation in a sectorized environment |
EP1521414B1 (en) | 2003-10-03 | 2008-10-29 | Kabushiki Kaisha Toshiba | Method and apparatus for sphere decoding |
US7039370B2 (en) | 2003-10-16 | 2006-05-02 | Flarion Technologies, Inc. | Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems |
US7242722B2 (en) | 2003-10-17 | 2007-07-10 | Motorola, Inc. | Method and apparatus for transmission and reception within an OFDM communication system |
US7120395B2 (en) | 2003-10-20 | 2006-10-10 | Nortel Networks Limited | MIMO communications |
EP1526674B1 (en) | 2003-10-21 | 2007-08-01 | Alcatel Lucent | Method for subcarrier allocation and for modulation scheme selection in a wireless multicarrier transmission system |
US7508748B2 (en) * | 2003-10-24 | 2009-03-24 | Qualcomm Incorporated | Rate selection for a multi-carrier MIMO system |
KR20050040988A (ko) | 2003-10-29 | 2005-05-04 | 삼성전자주식회사 | 주파수도약 직교 주파수 분할 다중화 기반 셀룰러시스템을 위한 통신방법 |
KR100957415B1 (ko) | 2003-10-31 | 2010-05-11 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식을 사용하는 통신 시스템에서 기지국 구분을 위한 파일럿 신호 송수신 장치 및 방법 |
KR101023330B1 (ko) | 2003-11-05 | 2011-03-18 | 한국과학기술원 | 무선 통신 시스템에서 서비스 품질을 보장하기 위한 복합자동 재전송 요구 방법 |
US7664533B2 (en) | 2003-11-10 | 2010-02-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for a multi-beam antenna system |
KR100981554B1 (ko) | 2003-11-13 | 2010-09-10 | 한국과학기술원 | 다중 송수신 안테나들을 구비하는 이동통신시스템에서,송신 안테나들을 그룹핑하여 신호를 전송하는 방법 |
EP1533950A1 (en) | 2003-11-21 | 2005-05-25 | Sony International (Europe) GmbH | Method for connecting a mobile terminal to a wireless communication system, wireless communication system and mobile terminal for a wireless communication system |
US7356000B2 (en) | 2003-11-21 | 2008-04-08 | Motorola, Inc. | Method and apparatus for reducing call setup delay |
JP3908723B2 (ja) | 2003-11-28 | 2007-04-25 | Tdk株式会社 | 誘電体磁器組成物の製造方法 |
JP2005167502A (ja) | 2003-12-01 | 2005-06-23 | Ntt Docomo Inc | 無線通信システム、送信無線局の制御装置及び受信無線局の制御装置、並びにサブキャリア選択方法 |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
WO2005055543A1 (en) | 2003-12-03 | 2005-06-16 | Australian Telecommunications Cooperative Research Centre | Channel estimation for ofdm systems |
TWI232040B (en) | 2003-12-03 | 2005-05-01 | Chung Shan Inst Of Science | CDMA transmitting and receiving apparatus with multiply applied interface functions and a method thereof |
KR20050053907A (ko) | 2003-12-03 | 2005-06-10 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 방식을 사용하는 이동 통신시스템에서 서브 캐리어 할당 방법 |
US7145940B2 (en) | 2003-12-05 | 2006-12-05 | Qualcomm Incorporated | Pilot transmission schemes for a multi-antenna system |
WO2005055484A1 (ja) | 2003-12-05 | 2005-06-16 | Nippon Telegraph And Telephone Corporation | 無線通信装置、無線通信方法、及び無線通信システム |
KR100963257B1 (ko) | 2003-12-05 | 2010-06-10 | 퀄컴 인코포레이티드 | 폐루프 다중 송수신 안테나 이동통신 시스템에서 송신고유 벡터를 선택하여 데이터를 송신하는 장치 및 방법 |
EP1542488A1 (en) | 2003-12-12 | 2005-06-15 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for allocating a pilot signal adapted to the channel characteristics |
KR100856227B1 (ko) | 2003-12-15 | 2008-09-03 | 삼성전자주식회사 | 이동통신시스템에서의 송/수신장치 및 방법 |
EP1545082A3 (en) | 2003-12-17 | 2005-08-03 | Kabushiki Kaisha Toshiba | Signal decoding methods and apparatus |
US7302009B2 (en) | 2003-12-17 | 2007-11-27 | Qualcomm Incorporated | Broadcast transmission with spatial spreading in a multi-antenna communication system |
KR100560386B1 (ko) | 2003-12-17 | 2006-03-13 | 한국전자통신연구원 | 무선 통신 시스템의 상향 링크에서 코히어런트 검출을위한 직교주파수 분할 다중 접속 방식의 송수신 장치 및그 방법 |
KR20050063826A (ko) | 2003-12-19 | 2005-06-28 | 엘지전자 주식회사 | 무선통신 시스템의 무선자원 할당방법 |
KR100507541B1 (ko) | 2003-12-19 | 2005-08-09 | 삼성전자주식회사 | 직교주파수분할다중접속 시스템에서의 데이터 및 파일롯할당 방법 과 그를 이용한 송신 방법 및 그 장치, 수신방법과 그 장치 |
JP4301931B2 (ja) | 2003-12-22 | 2009-07-22 | 株式会社三共 | 遊技機 |
US7181170B2 (en) * | 2003-12-22 | 2007-02-20 | Motorola Inc. | Apparatus and method for adaptive broadcast transmission |
ATE491269T1 (de) | 2003-12-22 | 2010-12-15 | Ericsson Telefon Ab L M | Verfahren zur bestimmung von sendegewichten |
KR100943572B1 (ko) * | 2003-12-23 | 2010-02-24 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 시스템에서 주파수재사용율을 고려한 적응적 부채널 할당 장치 및 방법 |
US7352819B2 (en) | 2003-12-24 | 2008-04-01 | Intel Corporation | Multiantenna communications apparatus, methods, and system |
JP2005197772A (ja) | 2003-12-26 | 2005-07-21 | Toshiba Corp | アダプティブアレイアンテナ装置 |
WO2005062729A2 (en) | 2003-12-27 | 2005-07-14 | Electronics And Telecommunications Research Institute | A mimo-ofdm system using eigenbeamforming method |
US7489621B2 (en) | 2003-12-30 | 2009-02-10 | Alexander A Maltsev | Adaptive puncturing technique for multicarrier systems |
WO2005069538A1 (en) | 2004-01-07 | 2005-07-28 | Deltel, Inc./Pbnext | Method and apparatus for telecommunication system |
CN1642051A (zh) | 2004-01-08 | 2005-07-20 | 电子科技大学 | 一种获取最优导引符号功率的方法 |
EP1704664B1 (en) | 2004-01-09 | 2013-10-23 | LG Electronics Inc. | Packet transmission method |
US7289585B2 (en) | 2004-01-12 | 2007-10-30 | Intel Corporation | Multicarrier receivers and methods for separating transmitted signals in a multiple antenna system |
JP4167183B2 (ja) | 2004-01-14 | 2008-10-15 | 株式会社国際電気通信基礎技術研究所 | アレーアンテナの制御装置 |
US8363697B2 (en) | 2004-01-20 | 2013-01-29 | Qualcomm Incorporated | Synchronized broadcast/multicast communication |
WO2005069505A1 (en) | 2004-01-20 | 2005-07-28 | Lg Electronics Inc. | Method for transmitting/receiving signal in mimo system |
US20050159162A1 (en) | 2004-01-20 | 2005-07-21 | Samsung Electronics Co., Ltd. | Method for transmitting data in mobile communication network |
US8611283B2 (en) | 2004-01-28 | 2013-12-17 | Qualcomm Incorporated | Method and apparatus of using a single channel to provide acknowledgement and assignment messages |
WO2005081439A1 (en) | 2004-02-13 | 2005-09-01 | Neocific, Inc. | Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback |
CA2555360A1 (en) | 2004-02-05 | 2005-09-22 | Motorika Inc. | Rehabilitation with music |
US8144735B2 (en) | 2004-02-10 | 2012-03-27 | Qualcomm Incorporated | Transmission of signaling information for broadcast and multicast services |
GB2412541B (en) | 2004-02-11 | 2006-08-16 | Samsung Electronics Co Ltd | Method of operating TDD/virtual FDD hierarchical cellular telecommunication system |
KR100827105B1 (ko) | 2004-02-13 | 2008-05-02 | 삼성전자주식회사 | 광대역 무선 통신 시스템에서 고속 레인징을 통한 빠른핸드오버 수행 방법 및 장치 |
US7564906B2 (en) | 2004-02-17 | 2009-07-21 | Nokia Siemens Networks Oy | OFDM transceiver structure with time-domain scrambling |
WO2005081437A1 (en) | 2004-02-17 | 2005-09-01 | Huawei Technologies Co., Ltd. | Multiplexing scheme in a communication system |
US8169889B2 (en) * | 2004-02-18 | 2012-05-01 | Qualcomm Incorporated | Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system |
JP2005236678A (ja) | 2004-02-19 | 2005-09-02 | Toyota Motor Corp | 移動体用受信装置 |
EP1721475A1 (en) | 2004-02-27 | 2006-11-15 | Nokia Corporation | Constrained optimization based mimo lmmse-sic receiver for cdma downlink |
US7421041B2 (en) | 2004-03-01 | 2008-09-02 | Qualcomm, Incorporated | Iterative channel and interference estimation and decoding |
US20050195886A1 (en) | 2004-03-02 | 2005-09-08 | Nokia Corporation | CPICH processing for SINR estimation in W-CDMA system |
KR101084113B1 (ko) | 2004-03-05 | 2011-11-17 | 엘지전자 주식회사 | 이동통신의 핸드오버에 적용되는 서비스 정보 전달 방법 |
US7290195B2 (en) | 2004-03-05 | 2007-10-30 | Microsoft Corporation | Adaptive acknowledgment delay |
EP1726111B1 (en) | 2004-03-15 | 2019-05-29 | Apple Inc. | Pilot design for ofdm systems with four transmit antennas |
US20050201296A1 (en) | 2004-03-15 | 2005-09-15 | Telefonaktiebolaget Lm Ericsson (Pu | Reduced channel quality feedback |
US7706350B2 (en) | 2004-03-19 | 2010-04-27 | Qualcomm Incorporated | Methods and apparatus for flexible spectrum allocation in communication systems |
US20050207367A1 (en) | 2004-03-22 | 2005-09-22 | Onggosanusi Eko N | Method for channel quality indicator computation and feedback in a multi-carrier communications system |
US7907898B2 (en) | 2004-03-26 | 2011-03-15 | Qualcomm Incorporated | Asynchronous inter-piconet routing |
JP2005284751A (ja) | 2004-03-30 | 2005-10-13 | Fujitsu Ltd | 論理検証装置、論理検証方法および論理検証プログラム |
JP4288368B2 (ja) | 2004-04-09 | 2009-07-01 | Okiセミコンダクタ株式会社 | 受信制御方法および無線lan装置 |
US7684507B2 (en) * | 2004-04-13 | 2010-03-23 | Intel Corporation | Method and apparatus to select coding mode |
US7047006B2 (en) * | 2004-04-28 | 2006-05-16 | Motorola, Inc. | Method and apparatus for transmission and reception of narrowband signals within a wideband communication system |
GB0409704D0 (en) | 2004-04-30 | 2004-06-02 | Nokia Corp | A method for verifying a first identity and a second identity of an entity |
KR100594084B1 (ko) | 2004-04-30 | 2006-06-30 | 삼성전자주식회사 | 직교 주파수 분할 다중 수신기의 채널 추정 방법 및 채널추정기 |
CA2506267A1 (en) | 2004-05-04 | 2005-11-04 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre | Multi-subband frequency hopping communication system and method |
US7411898B2 (en) | 2004-05-10 | 2008-08-12 | Infineon Technologies Ag | Preamble generator for a multiband OFDM transceiver |
JP4447372B2 (ja) | 2004-05-13 | 2010-04-07 | 株式会社エヌ・ティ・ティ・ドコモ | 無線通信システム、無線通信装置、無線受信装置、無線通信方法及びチャネル推定方法 |
KR20050109789A (ko) | 2004-05-17 | 2005-11-22 | 삼성전자주식회사 | 공간분할다중화/다중입력다중출력 시스템에서의 빔포밍 방법 |
US20050259005A1 (en) | 2004-05-20 | 2005-11-24 | Interdigital Technology Corporation | Beam forming matrix-fed circular array system |
US7157351B2 (en) * | 2004-05-20 | 2007-01-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | Ozone vapor clean method |
US8000377B2 (en) | 2004-05-24 | 2011-08-16 | General Dynamics C4 Systems, Inc. | System and method for variable rate multiple access short message communications |
JP4398791B2 (ja) | 2004-05-25 | 2010-01-13 | 株式会社エヌ・ティ・ティ・ドコモ | 送信機および送信制御方法 |
US7551564B2 (en) | 2004-05-28 | 2009-06-23 | Intel Corporation | Flow control method and apparatus for single packet arrival on a bidirectional ring interconnect |
KR100754794B1 (ko) | 2004-05-29 | 2007-09-03 | 삼성전자주식회사 | 이동통신시스템에서 셀 식별 코드 송수신 장치 및 방법 |
US7437164B2 (en) | 2004-06-08 | 2008-10-14 | Qualcomm Incorporated | Soft handoff for reverse link in a wireless communication system with frequency reuse |
JP2005352205A (ja) | 2004-06-10 | 2005-12-22 | Fujinon Corp | 照明装置 |
US7769107B2 (en) | 2004-06-10 | 2010-08-03 | Intel Corporation | Semi-blind analog beamforming for multiple-antenna systems |
US8619907B2 (en) | 2004-06-10 | 2013-12-31 | Agere Systems, LLC | Method and apparatus for preamble training in a multiple antenna communication system |
US7773950B2 (en) | 2004-06-16 | 2010-08-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Benign interference suppression for received signal quality estimation |
US7724777B2 (en) | 2004-06-18 | 2010-05-25 | Qualcomm Incorporated | Quasi-orthogonal multiplexing for a multi-carrier communication system |
US8068530B2 (en) | 2004-06-18 | 2011-11-29 | Qualcomm Incorporated | Signal acquisition in a wireless communication system |
US7599327B2 (en) | 2004-06-24 | 2009-10-06 | Motorola, Inc. | Method and apparatus for accessing a wireless communication system |
KR101053610B1 (ko) | 2004-06-25 | 2011-08-03 | 엘지전자 주식회사 | Ofdm/ofdma 시스템의 무선자원 할당 방법 |
US7299048B2 (en) | 2004-06-25 | 2007-11-20 | Samsung Electronics Co., Ltd. | System and method for performing soft handover in broadband wireless access communication system |
US8000268B2 (en) | 2004-06-30 | 2011-08-16 | Motorola Mobility, Inc. | Frequency-hopped IFDMA communication system |
CN102655446B (zh) | 2004-06-30 | 2016-12-14 | 亚马逊科技公司 | 用于控制信号传输的装置和方法、以及通信方法 |
US7426426B2 (en) | 2004-07-02 | 2008-09-16 | Vibration Research Corporation | System and method for simultaneously controlling spectrum and kurtosis of a random vibration |
WO2006002550A1 (en) | 2004-07-07 | 2006-01-12 | Nortel Networks Limited | System and method for mapping symbols for mimo transmission |
JP4181093B2 (ja) * | 2004-07-16 | 2008-11-12 | 株式会社東芝 | 無線通信システム |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US7676007B1 (en) * | 2004-07-21 | 2010-03-09 | Jihoon Choi | System and method for interpolation based transmit beamforming for MIMO-OFDM with partial feedback |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US7567621B2 (en) | 2004-07-21 | 2009-07-28 | Qualcomm Incorporated | Capacity based rank prediction for MIMO design |
US10355825B2 (en) | 2004-07-21 | 2019-07-16 | Qualcomm Incorporated | Shared signaling channel for a communication system |
US8477710B2 (en) * | 2004-07-21 | 2013-07-02 | Qualcomm Incorporated | Method of providing a gap indication during a sticky assignment |
US7257406B2 (en) | 2004-07-23 | 2007-08-14 | Qualcomm, Incorporated | Restrictive reuse set management |
CN101019340B (zh) | 2004-08-03 | 2010-10-27 | 新加坡科技研究局 | 数字数据流的发送方法、发送器、接收方法及接收器 |
JP2006050326A (ja) * | 2004-08-05 | 2006-02-16 | Toshiba Corp | 情報処理装置および同装置のシーンチェンジ検出方法 |
US7428426B2 (en) | 2004-08-06 | 2008-09-23 | Qualcomm, Inc. | Method and apparatus for controlling transmit power in a wireless communications device |
US7499393B2 (en) | 2004-08-11 | 2009-03-03 | Interdigital Technology Corporation | Per stream rate control (PSRC) for improving system efficiency in OFDM-MIMO communication systems |
KR101114104B1 (ko) | 2004-08-12 | 2012-02-21 | 엘지전자 주식회사 | 무선통신 시스템에서 전용 서비스의 수신 |
US20060218459A1 (en) | 2004-08-13 | 2006-09-28 | David Hedberg | Coding systems and methods |
US20060039332A1 (en) * | 2004-08-17 | 2006-02-23 | Kotzin Michael D | Mechanism for hand off using subscriber detection of synchronized access point beacon transmissions |
WO2006019253A1 (en) | 2004-08-17 | 2006-02-23 | Samsung Electronics Co., Ltd | Apparatus and method for space-time-frequency block coding for increasing performance |
US7899497B2 (en) | 2004-08-18 | 2011-03-01 | Ruckus Wireless, Inc. | System and method for transmission parameter control for an antenna apparatus with selectable elements |
US7336727B2 (en) | 2004-08-19 | 2008-02-26 | Nokia Corporation | Generalized m-rank beamformers for MIMO systems using successive quantization |
US20060039344A1 (en) * | 2004-08-20 | 2006-02-23 | Lucent Technologies, Inc. | Multiplexing scheme for unicast and broadcast/multicast traffic |
US7852746B2 (en) | 2004-08-25 | 2010-12-14 | Qualcomm Incorporated | Transmission of signaling in an OFDM-based system |
KR100856249B1 (ko) | 2004-08-26 | 2008-09-03 | 삼성전자주식회사 | 무선 통신 시스템에서 초기 동작 모드 검출 방법 |
US7894548B2 (en) | 2004-09-03 | 2011-02-22 | Qualcomm Incorporated | Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system |
US7978778B2 (en) | 2004-09-03 | 2011-07-12 | Qualcomm, Incorporated | Receiver structures for spatial spreading with space-time or space-frequency transmit diversity |
US7362822B2 (en) | 2004-09-08 | 2008-04-22 | Intel Corporation | Recursive reduction of channel state feedback |
US7613423B2 (en) * | 2004-09-10 | 2009-11-03 | Samsung Electronics Co., Ltd. | Method of creating active multipaths for mimo wireless systems |
GB0420164D0 (en) | 2004-09-10 | 2004-10-13 | Nokia Corp | A scheduler |
KR100715910B1 (ko) | 2004-09-20 | 2007-05-08 | 삼성전자주식회사 | 다중 접속 방식을 사용하는 이동 통신 시스템의 셀 탐색장치 및 방법 |
RU2285388C2 (ru) | 2004-09-27 | 2006-10-20 | Оао "Онежский Тракторный Завод" | Машина для бесчокерной трелевки деревьев |
WO2006034577A1 (en) | 2004-09-30 | 2006-04-06 | Nortel Networks Limited | Channel sounding in ofdma system |
US8325863B2 (en) | 2004-10-12 | 2012-12-04 | Qualcomm Incorporated | Data detection and decoding with considerations for channel estimation errors due to guard subbands |
US7969858B2 (en) | 2004-10-14 | 2011-06-28 | Qualcomm Incorporated | Wireless terminal methods and apparatus for use in wireless communications systems supporting different size frequency bands |
US7636328B2 (en) | 2004-10-20 | 2009-12-22 | Qualcomm Incorporated | Efficient transmission of signaling using channel constraints |
US7616955B2 (en) | 2004-11-12 | 2009-11-10 | Broadcom Corporation | Method and system for bits and coding assignment utilizing Eigen beamforming with fixed rates for closed loop WLAN |
US20060089104A1 (en) | 2004-10-27 | 2006-04-27 | Nokia Corporation | Method for improving an HS-DSCH transport format allocation |
GB2419788B (en) | 2004-11-01 | 2007-10-31 | Toshiba Res Europ Ltd | Interleaver and de-interleaver systems |
US7139328B2 (en) * | 2004-11-04 | 2006-11-21 | Motorola, Inc. | Method and apparatus for closed loop data transmission |
US7627051B2 (en) | 2004-11-08 | 2009-12-01 | Samsung Electronics Co., Ltd. | Method of maximizing MIMO system performance by joint optimization of diversity and spatial multiplexing |
TWI410072B (zh) | 2004-11-16 | 2013-09-21 | Qualcomm Inc | 用於藉由無線通訊系統中之站台之速率選擇之裝置、方法及記憶體單元 |
US20060104333A1 (en) | 2004-11-18 | 2006-05-18 | Motorola, Inc. | Acknowledgment for a time division channel |
US20060111054A1 (en) | 2004-11-22 | 2006-05-25 | Interdigital Technology Corporation | Method and system for selecting transmit antennas to reduce antenna correlation |
US7512096B2 (en) | 2004-11-24 | 2009-03-31 | Alcatel-Lucent Usa Inc. | Communicating data between an access point and multiple wireless devices over a link |
US7593473B2 (en) | 2004-12-01 | 2009-09-22 | Bae Systems Information And Electronic Systems Integration Inc. | Tree structured multicarrier multiple access systems |
US7822128B2 (en) | 2004-12-03 | 2010-10-26 | Intel Corporation | Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization |
WO2006062356A1 (en) | 2004-12-08 | 2006-06-15 | Electronics And Telecommunications Research Institute | Transmitter, receiver and method for controlling multiple input multiple output system |
US8238923B2 (en) | 2004-12-22 | 2012-08-07 | Qualcomm Incorporated | Method of using shared resources in a communication system |
AU2005319085B2 (en) | 2004-12-22 | 2010-11-18 | Qualcomm Incorporated | Methods and apparatus for flexible hopping in a multiple-access communication network |
US8179876B2 (en) | 2004-12-22 | 2012-05-15 | Qualcomm Incorporated | Multiple modulation technique for use in a communication system |
US7940710B2 (en) | 2004-12-22 | 2011-05-10 | Qualcomm Incorporated | Methods and apparatus for efficient paging in a wireless communication system |
US7543197B2 (en) | 2004-12-22 | 2009-06-02 | Qualcomm Incorporated | Pruned bit-reversal interleaver |
US20060140289A1 (en) | 2004-12-27 | 2006-06-29 | Mandyam Giridhar D | Method and apparatus for providing an efficient pilot scheme for channel estimation |
CN1642335A (zh) | 2005-01-06 | 2005-07-20 | 东南大学 | 移动通信系统混合无线资源管理方法 |
US7778826B2 (en) | 2005-01-13 | 2010-08-17 | Intel Corporation | Beamforming codebook generation system and associated methods |
US8150442B2 (en) | 2005-01-18 | 2012-04-03 | Sharp Kabushiki Kaisha | Method and apparatus for controlling power of subcarriers in a wireless communication system |
JP2006211537A (ja) | 2005-01-31 | 2006-08-10 | Nec Corp | コード状態変更装置、コード状態変更方法、およびコード状態変更プログラム |
KR100966044B1 (ko) | 2005-02-24 | 2010-06-28 | 삼성전자주식회사 | 다중 셀 통신 시스템에서 주파수 자원 할당 시스템 및 방법 |
KR20060096365A (ko) | 2005-03-04 | 2006-09-11 | 삼성전자주식회사 | 다중 사용자 다중입력 다중출력(mu-mimo)통신시스템의 사용자 스케줄링 방법 |
US8135088B2 (en) | 2005-03-07 | 2012-03-13 | Q1UALCOMM Incorporated | Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing |
US8095141B2 (en) * | 2005-03-09 | 2012-01-10 | Qualcomm Incorporated | Use of supplemental assignments |
US7720162B2 (en) | 2005-03-10 | 2010-05-18 | Qualcomm Incorporated | Partial FFT processing and demodulation for a system with multiple subcarriers |
US20060203794A1 (en) | 2005-03-10 | 2006-09-14 | Qualcomm Incorporated | Systems and methods for beamforming in multi-input multi-output communication systems |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US7512412B2 (en) | 2005-03-15 | 2009-03-31 | Qualcomm, Incorporated | Power control and overlapping control for a quasi-orthogonal communication system |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US20090213950A1 (en) | 2005-03-17 | 2009-08-27 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9461859B2 (en) | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9520972B2 (en) | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US8031583B2 (en) | 2005-03-30 | 2011-10-04 | Motorola Mobility, Inc. | Method and apparatus for reducing round trip latency and overhead within a communication system |
US7797018B2 (en) | 2005-04-01 | 2010-09-14 | Interdigital Technology Corporation | Method and apparatus for selecting a multi-band access point to associate with a multi-band mobile station |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US7711033B2 (en) | 2005-04-14 | 2010-05-04 | Telefonaktiebolaget Lm Ericsson (Publ) | SIR prediction method and apparatus |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US7768979B2 (en) | 2005-05-18 | 2010-08-03 | Qualcomm Incorporated | Separating pilot signatures in a frequency hopping OFDM system by selecting pilot symbols at least hop away from an edge of a hop region |
US7916681B2 (en) | 2005-05-20 | 2011-03-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for communication channel error rate estimation |
US8077692B2 (en) | 2005-05-20 | 2011-12-13 | Qualcomm Incorporated | Enhanced frequency division multiple access for wireless communication |
US20070183303A1 (en) | 2005-05-26 | 2007-08-09 | Zhouyue Pi | Method and apparatus for specifying channel state information for multiple carriers |
JP4599228B2 (ja) * | 2005-05-30 | 2010-12-15 | 株式会社日立製作所 | 無線送受信機 |
US8842693B2 (en) | 2005-05-31 | 2014-09-23 | Qualcomm Incorporated | Rank step-down for MIMO SCW design employing HARQ |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US8126066B2 (en) | 2005-06-09 | 2012-02-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Time and frequency channel estimation |
US7403470B2 (en) | 2005-06-13 | 2008-07-22 | Qualcomm Incorporated | Communications system, methods and apparatus |
EP1734773A1 (en) | 2005-06-14 | 2006-12-20 | Alcatel | A method for uplink interference coordination in single frequency networks, a base station a mobile terminal and a mobile network therefor |
JP4869724B2 (ja) | 2005-06-14 | 2012-02-08 | 株式会社エヌ・ティ・ティ・ドコモ | 送信装置、送信方法、受信装置及び受信方法 |
US20070071147A1 (en) * | 2005-06-16 | 2007-03-29 | Hemanth Sampath | Pseudo eigen-beamforming with dynamic beam selection |
US8599945B2 (en) * | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US8750908B2 (en) | 2005-06-16 | 2014-06-10 | Qualcomm Incorporated | Quick paging channel with reduced probability of missed page |
US8503371B2 (en) * | 2005-06-16 | 2013-08-06 | Qualcomm Incorporated | Link assignment messages in lieu of assignment acknowledgement messages |
US8098667B2 (en) | 2005-06-16 | 2012-01-17 | Qualcomm Incorporated | Methods and apparatus for efficient providing of scheduling information |
US8254924B2 (en) | 2005-06-16 | 2012-08-28 | Qualcomm Incorporated | Method and apparatus for adaptive registration and paging area determination |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
DE102005028179A1 (de) | 2005-06-17 | 2006-12-28 | Siemens Ag | Verfahren zum Verbindungsaufbau durch mobile Endgeräte in Kommunikationsnetzen mit variablen Bandbreiten |
US7668564B2 (en) | 2005-06-20 | 2010-02-23 | Texas Instruments Incorporated | Slow uplink power control |
KR100606099B1 (ko) | 2005-06-22 | 2006-07-31 | 삼성전자주식회사 | 주파수 분할 다중 접속 방식시스템에서의 긍정 및 부정응답 채널을 설정하는 방법 및 장치 |
WO2007004788A1 (en) * | 2005-07-04 | 2007-01-11 | Samsung Electronics Co., Ltd. | Position measuring system and method using wireless broadband (wibro) signal |
US20070025345A1 (en) | 2005-07-27 | 2007-02-01 | Bachl Rainer W | Method of increasing the capacity of enhanced data channel on uplink in a wireless communications systems |
US7403745B2 (en) * | 2005-08-02 | 2008-07-22 | Lucent Technologies Inc. | Channel quality predictor and method of estimating a channel condition in a wireless communications network |
US20070183386A1 (en) | 2005-08-03 | 2007-08-09 | Texas Instruments Incorporated | Reference Signal Sequences and Multi-User Reference Signal Sequence Allocation |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
US7508842B2 (en) | 2005-08-18 | 2009-03-24 | Motorola, Inc. | Method and apparatus for pilot signal transmission |
KR101285231B1 (ko) | 2005-08-18 | 2013-07-11 | 비씸 커뮤니케이션즈 아이엔씨. | 통신 시스템에서의 안테나 가상화 |
US20090129501A1 (en) | 2005-08-19 | 2009-05-21 | Mehta Neelesh B | Optimal signaling and selection verification for transmit antenna selection with erroneous feedback |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
US8331463B2 (en) | 2005-08-22 | 2012-12-11 | Qualcomm Incorporated | Channel estimation in communications |
US8644292B2 (en) | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
TWI370657B (en) | 2005-08-24 | 2012-08-11 | Qualcomm Inc | Varied transmission time intervals for wireless communication system |
US20070047495A1 (en) * | 2005-08-29 | 2007-03-01 | Qualcomm Incorporated | Reverse link soft handoff in a wireless multiple-access communication system |
DE102005041273B4 (de) * | 2005-08-31 | 2014-05-08 | Intel Mobile Communications GmbH | Verfahren zum rechnergestützten Bilden von Systeminformations-Medium-Zugriffs-Steuerungs-Protokollnachrichten, Medium-Zugriffs-Steuerungs-Einheit und Computerprogrammelement |
CA2620548C (en) | 2005-09-21 | 2015-03-31 | Lg Electronics Inc. | A method of enabling a combined data rate control lock channel in a wireless communication system |
EP1949631A4 (en) * | 2005-10-21 | 2013-02-20 | Nortel Networks Ltd | OFD MULTIPLEXING SCHEME |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US8134977B2 (en) | 2005-10-27 | 2012-03-13 | Qualcomm Incorporated | Tune-away protocols for wireless systems |
US7835460B2 (en) | 2005-10-27 | 2010-11-16 | Qualcomm Incorporated | Apparatus and methods for reducing channel estimation noise in a wireless transceiver |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US8045512B2 (en) * | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US20070165738A1 (en) | 2005-10-27 | 2007-07-19 | Barriac Gwendolyn D | Method and apparatus for pre-coding for a mimo system |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9088384B2 (en) | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US8649362B2 (en) | 2005-11-02 | 2014-02-11 | Texas Instruments Incorporated | Methods for determining the location of control channels in the uplink of communication systems |
US8582548B2 (en) * | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US8891457B2 (en) | 2005-12-08 | 2014-11-18 | Apple Inc. | Resource assignment systems and methods |
US9451491B2 (en) | 2005-12-22 | 2016-09-20 | Qualcomm Incorporated | Methods and apparatus relating to generating and transmitting initial and additional control information report sets in a wireless system |
US9148795B2 (en) | 2005-12-22 | 2015-09-29 | Qualcomm Incorporated | Methods and apparatus for flexible reporting of control information |
US8437251B2 (en) | 2005-12-22 | 2013-05-07 | Qualcomm Incorporated | Methods and apparatus for communicating transmission backlog information |
KR100793315B1 (ko) | 2005-12-31 | 2008-01-11 | 포스데이타 주식회사 | 다운링크 프리앰블을 이용한 반송파 신호 대 잡음비 측정장치 및 방법 |
US8831607B2 (en) | 2006-01-05 | 2014-09-09 | Qualcomm Incorporated | Reverse link other sector communication |
US7486408B2 (en) | 2006-03-21 | 2009-02-03 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method with reduced scribe lane usage for substrate measurement |
US20070242653A1 (en) | 2006-04-13 | 2007-10-18 | Futurewei Technologies, Inc. | Method and apparatus for sharing radio resources in an ofdma-based communication system |
EP1855424B1 (en) | 2006-05-12 | 2013-07-10 | Panasonic Corporation | Reservation of radio resources for users in a mobile communications system |
US8259695B2 (en) | 2007-04-30 | 2012-09-04 | Alcatel Lucent | Method and apparatus for packet wireless telecommunications |
US8254487B2 (en) * | 2007-08-09 | 2012-08-28 | Samsung Electronics Co., Ltd. | Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems |
US20090180459A1 (en) | 2008-01-16 | 2009-07-16 | Orlik Philip V | OFDMA Frame Structures for Uplinks in MIMO Networks |
EP2313990B1 (en) | 2008-08-12 | 2018-05-23 | BlackBerry Limited | Enabling downlink transparent relay in a wireless communications network |
US8228862B2 (en) | 2008-12-03 | 2012-07-24 | Samsung Electronics Co., Ltd. | Method and system for reference signal pattern design |
US8238483B2 (en) | 2009-02-27 | 2012-08-07 | Marvell World Trade Ltd. | Signaling of dedicated reference signal (DRS) precoding granularity |
US20100232384A1 (en) | 2009-03-13 | 2010-09-16 | Qualcomm Incorporated | Channel estimation based upon user specific and common reference signals |
KR200471652Y1 (ko) | 2013-08-07 | 2014-03-12 | 남경탁 | 의자 일체형 가구 |
-
2006
- 2006-04-10 US US11/401,979 patent/US9136974B2/en active Active
- 2006-08-30 CA CA2620610A patent/CA2620610C/en active Active
- 2006-08-30 MX MX2008002773A patent/MX2008002773A/es not_active Application Discontinuation
- 2006-08-30 TW TW095131897A patent/TWI327423B/zh active
- 2006-08-30 AU AU2006284814A patent/AU2006284814B2/en not_active Expired - Fee Related
- 2006-08-30 NZ NZ566254A patent/NZ566254A/en unknown
- 2006-08-30 KR KR1020087007739A patent/KR20080041291A/ko not_active Application Discontinuation
- 2006-08-30 JP JP2008529252A patent/JP5377963B2/ja active Active
- 2006-08-30 WO PCT/US2006/033937 patent/WO2007027825A2/en active Application Filing
- 2006-08-30 EP EP15178014.5A patent/EP2978156A1/en not_active Ceased
- 2006-08-30 BR BRPI0615589-8A patent/BRPI0615589A2/pt not_active Application Discontinuation
- 2006-08-30 CN CN200680039875.6A patent/CN101297514B/zh active Active
- 2006-08-30 EP EP20060802656 patent/EP1929692A2/en not_active Withdrawn
- 2006-08-30 KR KR1020107020692A patent/KR101287332B1/ko active IP Right Grant
- 2006-08-31 AR ARP060103805A patent/AR055623A1/es active IP Right Grant
-
2008
- 2008-02-24 IL IL189702A patent/IL189702A0/en unknown
- 2008-03-07 NO NO20081223A patent/NO20081223L/no not_active Application Discontinuation
-
2011
- 2011-12-09 JP JP2011270602A patent/JP5335884B2/ja active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI562575B (zh) * | 2011-06-24 | 2016-12-11 | Sun Patent Trust | |
US9559757B2 (en) | 2011-06-24 | 2017-01-31 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
US9912397B2 (en) | 2011-06-24 | 2018-03-06 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
US10305573B2 (en) | 2011-06-24 | 2019-05-28 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
US10992370B2 (en) | 2011-06-24 | 2021-04-27 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
US11621763B2 (en) | 2011-06-24 | 2023-04-04 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
Also Published As
Publication number | Publication date |
---|---|
NO20081223L (no) | 2008-04-01 |
CN101297514A (zh) | 2008-10-29 |
NZ566254A (en) | 2010-11-26 |
WO2007027825A2 (en) | 2007-03-08 |
MX2008002773A (es) | 2008-04-07 |
EP1929692A2 (en) | 2008-06-11 |
BRPI0615589A2 (pt) | 2011-05-24 |
WO2007027825A3 (en) | 2007-05-31 |
CN101297514B (zh) | 2013-03-27 |
KR20080041291A (ko) | 2008-05-09 |
JP5335884B2 (ja) | 2013-11-06 |
JP2012100297A (ja) | 2012-05-24 |
JP2009506729A (ja) | 2009-02-12 |
AU2006284814A1 (en) | 2007-03-08 |
EP2978156A1 (en) | 2016-01-27 |
AU2006284814B2 (en) | 2010-09-02 |
CA2620610A1 (en) | 2007-03-08 |
IL189702A0 (en) | 2008-06-05 |
AR055623A1 (es) | 2007-08-29 |
TW200718073A (en) | 2007-05-01 |
US20070049218A1 (en) | 2007-03-01 |
CA2620610C (en) | 2014-04-22 |
KR20100112204A (ko) | 2010-10-18 |
US9136974B2 (en) | 2015-09-15 |
JP5377963B2 (ja) | 2013-12-25 |
KR101287332B1 (ko) | 2013-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI327423B (en) | Precoding and sdma support | |
JP5823462B2 (ja) | 多重アクセス無線通信システムにおけるコードブック交換のための方法および装置 | |
TWI376898B (zh) | ||
US9179319B2 (en) | Adaptive sectorization in cellular systems | |
US8233939B2 (en) | Multiuser sector micro diversity system | |
JP5006393B2 (ja) | 閉ループ多重アンテナシステムにおけるデータ送受信装置及びその方法 | |
US9184870B2 (en) | Systems and methods for control channel signaling | |
JP5069083B2 (ja) | ユーザ装置、基地局装置及びmimo伝送制御方法 | |
JP5757994B2 (ja) | ワイヤレス通信の方法及びシステム、対応するネットワーク及びコンピュータプログラム製品 | |
JP2013168953A (ja) | 無線通信システムにおけるmimo伝送のためのユーザーのグループ分け | |
KR20090016386A (ko) | 다중안테나 시스템에서 귀환데이터 전송방법 | |
EP1759470A1 (en) | Apparatus and method for beamforming in a multi-antenna system | |
JP2009530987A5 (zh) | ||
US9059820B2 (en) | Method for transmitting channel quality information, user equipment, method for transmitting multi-user data, and base station | |
KR101403134B1 (ko) | 다중안테나 시스템에서 다중사용자 데이터 전송 방법 | |
RU2392751C2 (ru) | Поддержка предварительного кодирования и sdma | |
Wang et al. | Multi-antenna Techniques in Ultra Mobile Broadband Communication Systems |