TWI894246B - 用於參考信號通道估計之方法及系統 - Google Patents

用於參考信號通道估計之方法及系統

Info

Publication number
TWI894246B
TWI894246B TW110111733A TW110111733A TWI894246B TW I894246 B TWI894246 B TW I894246B TW 110111733 A TW110111733 A TW 110111733A TW 110111733 A TW110111733 A TW 110111733A TW I894246 B TWI894246 B TW I894246B
Authority
TW
Taiwan
Prior art keywords
frequency
reference signal
domain processing
time
domain
Prior art date
Application number
TW110111733A
Other languages
English (en)
Other versions
TW202143667A (zh
Inventor
彼得 約翰 布萊克
陳琻滬
蔣靖
塔莫 艾德爾 卡道斯
萬侖 趙
Original Assignee
美商維瑞威克斯公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 美商維瑞威克斯公司 filed Critical 美商維瑞威克斯公司
Publication of TW202143667A publication Critical patent/TW202143667A/zh
Application granted granted Critical
Publication of TWI894246B publication Critical patent/TWI894246B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/022—Channel estimation of frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

本發明之態樣係關於參考信號通道估計。兩個節點之間之一無線通信通道可係基於諸如一探測參考信號之一經接收參考信號來估計。揭示改良參考信號通道估計之效能，並於存在各種損害中之一或多者的情形下，使得通道估計更加穩健的技術。可執行頻域處理及/或時域處理，以減小通道估計中之失真。

Description

用於參考信號通道估計之方法及系統
本發明之實施例係關於使用一參考信號估計一通信系統中之一通道。
在一無線通信系統中，可期望具有一使用者設備與一基地台之間的一通信通道之一準確估計。某些通信標準包含可用於估計一通信通道之參考信號。此一參考信號可用於估計自一使用者設備至一基地台之一上行鏈路通道。在某些應用中，可基於上行鏈路通道估計自基地台至使用者設備再至基地台之一下行鏈路通道。在真實世界無線通信系統中，一通道估計可由於各種原因而降級。
申請專利範圍中闡述之創新各自具有數個態樣，其中無任一單個態樣能單獨決定其所期望屬性。在不限制申請專利範圍之範疇之情形下，現將簡要闡述本發明之某些顯著特徵。
本發明之一個態樣係一種參考信號通道估計之方法。該方法包括：接收用於通道估計之一參考信號；在一頻域中對該參考信號進行去覆蓋以產生一經去覆蓋參考信號；在該去覆蓋之後，對該經去覆蓋參考信號進行頻域處理以使該經去覆蓋參考信號中之一直流偏移之失真減小；在 該頻域處理之後，進行時域處理以使與該經去覆蓋參考信號相關聯之一雜訊底部減小；及基於該頻域處理及該時域處理產生一通道估計，其中該通道估計和一第一節點與一第二節點之間的一通信通道相關聯。
該頻域處理可包括：基於該經去覆蓋頻域參考信號之至少兩個其他頻調產生針對該經去覆蓋頻域參考信號之一頻調之一經估計頻調。該頻域處理可包括：用該經估計頻調替換該頻調以使與該直流偏移相關聯之失真減小。該頻域處理可包括：基於該經估計頻調修改該頻調以使與該直流偏移相關聯之失真減小。
該頻域處理可包括：對該經去覆蓋頻域參考信號進行脈波塑形以使與該直流偏移相關聯之失真減小。
該時域處理可包括：估計對應於通道脈衝回應之間的副載波之時域抽頭之一子集之雜訊功率，並基於該估計對該等時域抽頭之至少一部分執行一每抽頭擴縮。該每抽頭擴縮可涉及最小均方誤差擴縮。該每抽頭擴縮可涉及臨限值化。
該方法可進一步包括：在該去覆蓋之前，對該參考信號進行脈波塑形。
該方法可進一步包括：在該去覆蓋之前，基於一頻率偏移之一指示符旋轉該參考信號。
該時域處理可包括：將一混附雜訊(spur)移動至用於該參考信號之循環移位之時域窗之外。該方法可進一步包括：在該去覆蓋之前，對該參考信號進行脈波塑形。
該參考信號可係一上行鏈路探測參考信號。
該第一節點可係一使用者設備且該第二節點可係一網路節 點。該第一節點可係一使用者設備且該第二節點可包含一遠端無線電單元。該第一節點可係一使用者設備且該第二節點可包含與一天線前端整合之一基地台。該第一節點可包含一第一遠端無線電單元且該第二節點可包含一第二遠端無線電單元。該第一節點可係一第一使用者設備且該第二節點可係一第二使用者設備。
本發明之另一態樣係用於通道估計之一系統。該系統包括：一頻域處理電路、一時域處理電路，及通道估計電路。該頻域處理電路經組態以產生一經去覆蓋頻域參考信號，並處理該經去覆蓋頻域參考信號以便使與一直流偏移相關聯之失真減小。該時域處理電路具有耦合至該頻域處理電路之一輸出之一輸入。該時域處理電路經組態以抑制時域通道脈衝回應洩漏。該通道估計電路經組態以基於該時域處理電路之一輸出產生一通道估計，其中該通道估計和一第一節點與一第二節點之間的一無線通信通道相關聯。
該頻域處理電路可經組態以基於該經去覆蓋頻域參考信號之至少兩個其他頻調產生針對該經去覆蓋頻域參考信號之一頻調之一經估計頻調，並用該經估計頻調替換該頻調以使與該直流偏移相關聯之失真減小。
該頻域處理電路可經組態以對該經去覆蓋頻域參考信號執行脈波塑形以使與該直流偏移相關聯之失真減小。
該時域處理電路可包括：一濾波器，其包括複數個抽頭；一雜訊功率估計電路，其經組態以估計對應於通道脈衝回應之間的副載波之該濾波器之該等抽頭之一子集之雜訊功率；及一濾波器抽頭擴縮電路，其經組態以基於該經估計雜訊功率對該濾波器之該等抽頭之至少一部分執行 一每抽頭擴縮。
該時域處理電路可經組態以將一混附雜訊移動至用於該參考信號之循環移位之時域窗之外。
該系統可進一步包括一第二時域處理電路，其經組態以對一參考信號進行脈波塑形，該第二時域處理電路具有耦合至該頻域處理電路之一輸入之一輸出。
該系統可進一步包括一第二時域處理電路，其經組態以基於一頻域偏移之一指示符旋轉一參考信號以藉此減小該頻域偏移，其中該第二時域處理電路具有耦合至該頻域處理電路之一輸入之一輸出。
該系統可進一步包括一第二頻域處理電路，其經組態以執行每循環移位頻域處理，其中該第二頻域處理電路耦合於該時域處理電路與該通道估計電路之間。
該第一節點可係一使用者設備且該第二節點可係一網路節點。該第一節點可係一使用者設備且該第二節點可包含一遠端無線電單元。該第一節點可係一使用者設備且該第二節點可包含與一天線前端整合之一基地台。
該經去覆蓋頻域參考信號可係一經去覆蓋上行鏈路探測參考信號。
本發明之另一態樣係用於通道估計之一系統，該系統包括：用於處理一經去覆蓋頻域參考信號以便使與一直流偏移相關聯之失真減小之構件；用於抑制時域通道脈衝回應洩漏之構件，用於抑制之該構件具有耦合至用於處理之該構件之一輸出之一輸入；及一通道估計電路，其經組態以基於用於抑制之該構件之一輸出產生一通道估計，其中該通道估計和 一第一節點與一第二節點之間的一無線通信通道相關聯。
出於概述本發明之目的，本文中已闡述創新之優點及新穎特徵。應理解，未必可根據任何特定實施例來達成所有此等優點。因此，可以達成或最佳化如本文中所教示之一個優點或優點群組而未必達成如本文中可教示或建議之其他優點之一方式來體現或實施創新。
10A:使用者設備
10B:使用者設備
10N:使用者設備
12A:通道
12B:通道
12N:通道
13:加總點
14:節點B
16:射頻降頻轉換區塊
18:取樣與循環首碼移除區塊
21:基本序列產生器
22:相位斜坡區塊
23:資源元素映射區塊
24:逆快速傅立葉變換區塊
25:數位轉類比轉換及射頻調變區塊
30:處理電路系統
31:快速傅立葉變換區塊
32:第一頻域處理電路/頻域處理電路
33:逆快速傅立葉變換區塊
34:時域處理電路
35:第二快速傅立葉變換區塊
35A:子快速傅立葉變換區塊
35B:子快速傅立葉變換區塊
35N:子快速傅立葉變換區塊
36:第二頻域處理電路/頻域處理電路
37:通道估計電路
40:處理電路系統
41:快速傅立葉變換區塊
42:參考信號提取電路
43:基本序列產生器
44:混合器
45:頻域處理電路
48:時域處理及通道脈衝回應分離區塊
50A-50N:每循環移位頻域處理電路/頻域處理電路
62:頻域處理電路
63:頻調估計電路
64:頻域處理電路
65:通道頻率回應脈波塑形電路/頻域處理電路
66:頻域處理電路
67:頻域處理電路
68:擴縮電路
69:時域處理電路
70:通道脈衝回應擴縮電路
160:實例方法/方法
162:方塊
164:方塊
166:方塊
170:時域濾波器
172:濾波器
176:抽頭擴縮電路
180:處理電路系統
182:時域脈波塑形電路/脈波塑形電路
202:頻率旋轉電路
210:方法
212:方塊
214:方塊
216:方塊
230:實例多輸入多輸出網路環境/多輸入多輸出網路環境/環境/網路環境
240:基頻單元
250:服務區
255:遠端無線電單元
260:服務區
265:遠端無線電單元
270:服務區
275:遠端無線電單元
282:使用者設備
283:使用者設備
284:電視
288:使用者設備/機器人裝置
290:使用者設備叢集
292:額外使用者設備
294:行動使用者設備
現將參考附圖，藉助於非限制性實例闡述本發明之實施例。
圖1係與一參考信號模型相關聯之一示意性方塊圖。
圖2係經配置以產生一參考信號之圖1之一使用者設備之硬體之一示意性方塊圖。
圖3係經配置以產生一通道估計之處理電路系統之一示意性方塊圖。
圖4A係經配置以產生一通道估計之處理電路系統之一第一部分之一示意性方塊圖。
圖4B係經配置以產生一通道估計之處理電路系統之一第二部分之一示意性方塊圖。
圖5係圖解說明針對具有8個循環移位之一參考信號之時域通道脈衝回應分離之一圖式。
圖6A至圖6E係根據某些實施例可改良通道估計之圖4A至圖4B之處理電路系統之部分之方塊圖。
圖7A係圖解說明來自兩個循環移位的，在直流及低頻頻調中具有某些失真之一經去覆蓋探測參考信號之一量值之一圖表。
圖7B係圖解說明一時域中之失真直流及低頻頻調之一圖表。
圖8A係圖解說明一頻域中之一通道頻率回應之一圖表。
圖8B係圖解說明與圖8A之通道頻率回應相關聯之一時域中之功率洩漏之一圖表。
圖9係圖解說明具有一時序偏移、一頻率偏移及不具有時序或頻率偏移之頻域脈波之一圖表。
圖10展示用於參考信號通道估計之內插之一實例。
圖11展示用於參考信號通道估計之外插之一實例。
圖12A展示在使用失真低頻頻調執行一FFT之後的一經接收頻域SRS。
圖12B展示在將二次內插應用於16個低頻頻調之後的一SRS。
圖12C展示在將二次外插應用於每一側上之16個邊緣頻調之後的一SRS。
圖13A展示一矩形脈波及一升餘弦脈波之窗函數。
圖13B展示矩形及升餘弦脈波分別相對於一中心抽頭之時域抽頭功率。
圖14A係在頻域脈波塑形之前具有經外插邊緣頻調之一SRS之一曲線圖。
圖14B係一頻域脈波塑形函數之一曲線圖。
圖14C係在應用頻域脈波塑形之後包含經外插邊緣頻調之SRS之一曲線圖。
圖15係圖解說明在已執行一逆FFT之後針對循環移位之時域通道脈衝回應之一圖式。
圖16係基於一功率延遲量變曲線進行時域通道脈衝回應擴縮之一實例方法之一流程圖。
圖17係可基於一功率延遲量變曲線執行時域通道脈衝回應擴縮之一時域處理電路之一示意性方塊圖。
圖18係具有時域脈波塑形之處理電路系統之一示意性方塊圖。
圖19A係時域中之一矩形脈波及一升餘弦脈波之一圖表。
圖19B係頻域中之一sinc脈波及一升餘弦脈波之一圖表。
圖20係具有用以補償一頻率偏移之頻率旋轉之處理電路系統之一示意性方塊圖。
圖21係偵測其中混附雜訊被移動至一未經使用之時間空間之一參考信號之循環移位之一方法之一流程圖。
圖22圖解說明用於四個循環移位之第一諧波混附雜訊之位置。
圖23係圖解說明其中可執行基於一參考信號之通道估計之一實例多輸入多輸出(MIMO)網路環境之一圖式。
優先權申請案之交叉參考
本申請案主張2020年3月31日提出申請且標題為「REFERENCE SIGNAL CHANNEL ESTIMATION」之美國專利申請案第16/836,668號之優先權的權益，該美國專利申請案之揭示內容係以全文引用的方式且出於所有目的併入本文中。
某些實施例之以下說明呈現特定實施例之各種說明。然而， 本文中闡述之創新可以(舉例而言)如申請專利範圍所定義及涵蓋之大量不同方式予以體現。在本說明中，參考其中相似元件符號可指示相同或功能上類似之元件之圖式。將理解，各圖中所圖解說明之元件未必按比例繪製。而且，將理解，某些實施例可包含比一圖式中所圖解說明更多的元件及/或一圖式中所圖解說明之元件之一子集。此外，某些實施例可併入來自兩個或更多個圖式之特徵之任何適合組合。本文中所提供之標題僅為了方便起見，且未必影響申請專利範圍之範疇或意義。
在長程演進(LTE)及新無線電(NR)系統中，一探測參考信號(SRS)可自一使用者設備(UE)傳輸至一節點B，用於估計一上行鏈路通道。更大體而言，一SRS可自一第一節點之一天線傳輸至一第二節點之一天線。對於時分雙工(TDD)系統，可基於通道互易性使用SRS通道估計(CE)來估計一下行鏈路通道品質。在基於碼簿及/或正則化逼零(RZF)預編碼之多輸入多輸出(MIMO)系統中，SRS CE可用於選擇一預編碼矩陣。在此等例項中，尤其在RZF預編碼應用中，期望SRS CE之準確性高。SRS CE可用於校準。
在一真實世界系統中存在可降級SRS CE之效能之各種損害。此等損害包含但不限於以下各項中之一或多者：頻率偏移、時序偏移、時域通道脈衝回應(CIR)洩漏，或相對低頻頻調之失真。此外，邊緣頻調之輸出SRS CE可歸因於頻域中之SRS之一不連續性而係不準確的。在本發明中，提供改良SRS CE之效能之技術以在存在一或多個損害之情形下使得通道估計更加穩健。
探測參考訊號
在LTE及第五代(5G)NR中，一SRS之建構通常包含SRS序列 產生及至實體資源之映射。可根據一相關通信標準產生SRS。SRS可係本文中所揭示之任何適合實施例中之一上行鏈路SRS。
在LTE及/或NR上行鏈路傳輸中，可存在用於將SRS傳輸至經排程UE之專用正交頻域多工(OFDM)符號。在每一符號中，用於SRS之mSRS資源區塊可由UE之一群組共用。用於SRS之mSRS資源區塊中之所有副載波可劃分成K TC 個正交梳。一正交梳可係在一既定時間分配的在頻域中正交之信號之一群組。每一梳中之資源元素M ZC 之數目可根據方程式1，其中M ZC 可表示一SRS序列之一長度。
在方程式1中，係每一資源區塊中之副載波之數目。舉例而言，可係12。在每一梳內，M ZC 資源元素透過不同循環移位由最多個SRS共用。傳輸梳數目K TC 由基地台表示且可取值2或4。一個梳可支援之循環移位之最大數目可係K TC 之一函數，如由方程式2所指示。
為了使UE經由mSRS資源區塊傳輸一SRS，UE應產生長度為M ZC 之一SRS序列。對於UE，第一步可係獲得長度為M ZC 之一基本序列(n)，其中n表示經分配頻調之索引。對於一既定長度M ZC ，可存在30或60個基本序列(n)，該等基本序列被劃分成若干個群組，其中u {0,1,…,29}係群組數目。一個群組中可存在一個或兩個序列，且一群組內之基本序列索引可分別係v={0}或v={0,1}。
對於M ZC 36，(n)可藉由方程式3自一紮德奧夫-朱(Zadoff-Chu(ZC))序列獲得。
在方程式3中，N ZC 可係最大素數使得N ZC <M ZC ，且xq(m)係自方程式4-1至4-3獲得之長度為N ZC 之一ZC序列。
對於M ZC <36，可根據一第三代夥伴計劃(3GPP)標準產生(n)。
可組態用於SRS之群組及序列跳躍。在群組或序列跳躍中，可藉由變化用於每一SRS符號之u及v來選擇一基本序列。在諸多應用中，可停用群組或序列跳躍並簡化u及v之計算，分別如方程式5-1及5-2中所展示。
在方程式5-1中，由較高層給出。在下文中，假定停用群組或序列跳躍，且因此基本序列表示為，其中下標u及v被省略。
在每一UE中獲得基本序列之後，可藉由根據方程6在頻域中應用一循環移位來產生SRS序列r (c)(n)。
在方程式6中，c係循環移位索引。接著，將r(c)(n)映射至一經分配梳，該經分配梳透過一逆快速傅立葉變換(IFFT)轉換為時域信號。時域信號可經由具有通道脈衝回應(CIR)h c (t)，0 c<之通道傳輸至一特定天線。圖1中展示用於SRS模型之一總體方塊圖。
圖1係與一參考信號模型相關聯之一示意性方塊圖。在圖1中，複數個UE 10A、UE 10B、UE 10N經由各別通道12A、12B、12N將具 有不同循環移位之SRS無線地傳輸至一節點B 14。不同循環移位可識別哪個裝置及/或天線無線地傳輸一SRS。在一加總點13處，SRS可在參考信號模型中加總。節點B 14可包含一射頻(RF)降頻轉換區塊16及一取樣與循環首碼(CP)移除區塊18。RF降頻轉換區塊16可降頻轉換一經接收RF信號。舉例而言，此降頻轉換可係轉換為基頻。取樣及CP移除區塊18可對經降頻轉換之RF參考信號進行取樣。取樣及CP移除區塊18可移除一循環首碼。節點B 14可自SRS(自UE 10A、UE 10B、UE 10N接收)產生時域接收樣本。節點B 14可係一演進節點B(eNodeB)、一下一代節點B(gNode B)，或者被替換，及/或與任何適合基地台或網路系統一起實施。
在循環移位之最大數目係8之情形下，參考信號模型中可存在8個UE及8個通道。類似地，在循環移位之最大數目係12之情形下，參考信號模型中可存在12個UE及12個通道。任何其他適合數目之最大循環移位及對應通道可根據本文中所揭示之任何適合原則及優點來實施。
儘管在圖1中圖解說明UE，但本文中所揭示之原則及優點可應用於經配置以彼此無線地通信之任何適合節點之間的通道估計。舉例而言，SRS通道估計可用於估計一UE與一網路節點之間的一通道，舉例而言，如圖1中所展示。網路節點可係與一天線前端整合之一基地台。網路節點可包含一遠端無線電單元(RRU)及一基頻單元(BBU)。作為另一實例，SRS通道估計可用於估計兩個網路節點之間(例如，包含RRU之2個節點之間)的一通道。作為又一個實例，SRS通道估計可用於估計兩個UE之間的一通道。根據本文中所揭示之任何適合原則及優點之SRS通道估計可應用於經配置以無線地傳達資訊之任何適合節點之間的通道估計。
儘管出於說明性目的可參考SRS闡述本文中所揭示之實施 例，但本文中所揭示之任何適合原則及優點可應用於使用任何適合參考信號及/或任何適合導頻信號進行通道估計。
圖2係經配置以產生一參考信號之圖1之一UE之硬體之一示意性方塊圖。圖1之每一UE 10A至UE 10N皆可包含圖2中所展示之硬體。參考圖2之區塊闡述之功能性可藉由任何適合實體硬體來實施。參考圖2闡述之功能性可在經配置以傳輸一SRS及/或其他參考信號之任何適合節點中實施。
如圖2中所圖解說明，參考信號產生電路系統可包含：一基本序列產生器21、一相位斜坡區塊22、一資源元素映射區塊23、一IFFT區塊24，以及一數位轉類比轉換及RF調變區塊25。基本序列產生器21可產生舉例而言如上文所闡述之一基本序列。作為一個實例，基本序列可使用方程式3來產生。相位斜坡區塊22可將一循環移位應用於由基本序列產生器21產生之基本序列。循環移位可應用於頻域中。每一節點(例如，圖1中之每一UE 10A至UE 10N)皆可具有藉由一各別相位斜坡區塊22應用之一不同循環移位。資源元素映射區塊23可將SRS序列自相位斜坡區塊22映射至一經分配梳。接著，IFFT區塊24可藉由一逆傅立葉變換將經頻域循環移位之信號轉換為時域。一循環首碼可由IFFT區塊24添加。數位轉類比轉換及RF調變區塊25可將IFFT區塊24之輸出轉換為一類比信號，並將該類比信號調變為一射頻。由數位轉類比轉換及RF調變區塊25提供之一RF信號可經由一通信通道無線地傳輸至一節點B及/或其他適合硬體，用於通道估計。
參考信號通道估計
處理電路系統可接收諸如一SRS之一參考信號，並基於經接收參考信號產生一通道估計。通道估計可針對一相對寬頻SRS。將參考圖3 至圖6E闡述實例信號處理。信號處理電路系統可根據本文中所揭示之任何適合原則及優點執行經改良參考信號通道估計。
圖3係經配置以產生一通道估計之處理電路系統30之一示意性方塊圖。處理電路系統30可接收時域參考信號樣本，並基於參考信號產生一通道估計。舉例而言，時域樣本可自圖1之一取樣及CP移除區塊18接收。如圖3中所圖解說明，處理電路系統30包含一快速傅立葉變換(FFT)區塊31、一第一頻域處理電路32、一逆快速傅立葉變換(IFFT)區塊33、一時域處理電路34、一第二FFT區塊35、一第二頻域處理電路36，以及一通道估計電路37。
經接收參考信號可係一SRS。經接收SRS可由FFT區塊31轉換為頻域。頻域處理電路32具有耦合至FFT區塊31之一輸出之一輸入。第一頻域處理電路32可提取一梳之SRS符號以用於去覆蓋。第一頻域處理電路可使用一基本序列對參考信號進行去覆蓋。經去覆蓋頻域參考信號可含有具有不同相位斜坡之通道頻率回應之一總和。可在對參考信號進行去覆蓋之後藉由第一頻域處理電路32執行額外頻域處理，以改良SRS通道估計效能。第一頻域處理電路32可執行頻域處理以使一直流偏移及/或一低頻偏移之失真減小。下文將論述此處理之實例。
IFFT區塊33可將來自第一頻域處理電路32之經去覆蓋頻域信號轉換為時域。來自IFFT區塊33之一輸出信號可提供至時域處理電路34。時域處理電路34可執行時域處理，以改良SRS通道估計效能。時域處理電路34可執行時域處理以使一雜訊底部減小。下文將論述此處理之實例。時域處理電路34可分離通道脈衝回應。分離通道脈衝回應可根據參考圖6所論述之任何適合原則及優點來執行。
第二FFT區塊35可將來自時域處理電路34之一輸出信號轉換為頻域。第二頻域處理電路36可執行每循環移位頻域處理。第二頻域處理電路36可輸出針對每一循環移位之一通道頻率回應。
通道估計電路37可基於第二頻域處理電路36之一輸出產生一通道估計。通道估計係基於由處理電路系統30接收之參考信號。通道估計和一第一節點與一第二節點之間的一無線通信通道相關聯。作為一個實例，第一節點可係圖1之一UE 10A且第二節點可係圖1之節點B 14。本文中所揭示之處理技術可改良由通道估計電路37產生之通道估計。此在各種應用中可係有利的，諸如用於選擇TDD MIMO系統中之一預編碼矩陣。
在圖4A及圖4B以及對應說明中提供關於處理電路系統30之實施例之更多細節。圖4A係用於產生一通道估計之處理電路系統40之一第一部分之一示意性方塊圖。圖4B係處理電路系統40之一第二部分之一示意性方塊圖。
處理電路系統40接收諸如一SRS之一參考信號。第一FFT區塊31將經接收參考信號轉換為頻域。一參考信號提取電路42可提取一個梳之所有資源元素，用於去覆蓋。此可涉及提取一當前梳之SRS符號。頻域中之經加總SRS可由方程式7表示。在方程式7中，Hc(n)=(h(kT s ))係循環移位c之通道頻率回應(CFR)，且v(n)表示加成性白高斯雜訊(AWGN)。
一基本序列產生器43產生用於去覆蓋之一基本序列。基本序列可根據本文中所揭示之任何適合原則及優點來產生。一混合器44或任何其他適合電路可用於使用來自基本序列產生器43之基本序列對參考信號進行去覆蓋。
在藉由基本序列去覆蓋之後，經去覆蓋頻域信號可由方程式8表示。方程式8展示經去覆蓋頻域信號含有具有不同線性相位斜坡之通道頻率回應之一總和。
一頻域處理電路45可對經去覆蓋信號執行頻域處理，以改良參考信號通道估計效能。
將h(k)表示為長度為N之一時域信號，並藉由將h(k)向右循環移位S來將h(S)(k)定義為序列，亦即，h (S)(k)=h(MOD(k+S,N))，0 k<N。可藉由IFFT區塊33，透過一IFFT將經去覆蓋信號y'(n)轉換為時域。在時域中，信號變成具有不同循移位之多個通道脈衝回應之一組合，此可由方程式9表示。在方程式9中，N IFFT 表示每梳IFFT大小。
在IFFT之後，可藉由圖4B之時域處理及通道脈衝回應分離區塊48來執行時域處理，以改良SRS CE效能。假定任何hc之最大延遲擴展小於，用於不同循環移位之時域通道可藉由時域處理及通道脈衝回應分離區塊48而相對容易地分離。第二FFT區塊35可包含用以將個別通道脈衝回應變換成頻域之子FFT區塊35A至35N。每循環移位頻域處理電路50A至50N可獲得針對每一循環移位之通道頻率回應。諸如圖3之通道估計電路37之一通道估計電路可基於用於循環移位之通道頻率回應來產生通道估計。
現將論述分離通道脈衝回應。此功能性可(舉例而言)係藉由圖4B之時域處理及通道脈衝回應分離區塊48來執行。為了分離通道脈衝回 應，可針對循環移位中之每一者定義一窗。對於一特定循環移位，僅保留落入用於該特定循環移位之窗中的抽頭，且可將所有其他抽頭設定至零。接著，循環移位非零抽頭，且在頻域中，可移除線性相位斜坡。
圖5係圖解說明針對具有8個循環移位之一參考信號之時域通道脈衝回應分離之一圖式。圖5中所展示之實例圖解說明如何將用於一特定移位(亦即，c=7)之通道脈衝回應與其他循環移位分離。圖5之最頂部部分展示一時域脈衝回應。存在針對圖5中所展示之8個不同循環移位之時域脈衝回應。存在針對循環移位中之每一者定義的不同窗。可藉由在一特定窗內保留一特定通道脈衝回應(亦即，用於圖5中之循環移位c=7之通道脈衝回應)並移除其他通道脈衝回應來執行窗化。可移位用於特定通道之脈衝回應以移除循環移位。此可移除頻域中之線性相位斜坡。
現將論述SRS中之ZC序列之性質。若在方程式4-1至4-3中定義之一ZC序列xq(m)藉由自身之一經移位版本來去覆蓋(表示為xq(m-s)，s=0,±1,±2,±3,...)，則經去覆蓋信號可由方程式10表示。在方程式10中，可係一恒相位。
方程式10顯示xq(m)．xq*(m-s)係線性相位斜坡之一序列，其中斜率係s與q之一函數。若停用頻率跳躍及序列跳躍，則q變成取決於小區ID。
xq(m)．xq*(m-s)之IFFT表示時域中之一脈衝，且脈衝之延遲與s及q相關。
頻域處理技術可應用於改良參考信號通道估計。此頻域處理可減小直流及/或其他低頻偏移。另一選擇係或另外，頻域處理電路可補償 對準確參考信號通道估計之任何其他適合損害。圖3之頻域處理電路32及/或圖4A之頻域處理電路45可實施頻域處理以改良參考信號通道估計。圖6A、圖6B及圖6C圖解說明可由頻域處理電路32及/或頻域處理電路45實施之頻域處理電路之實例方塊圖。圖3之頻域處理電路36及/或圖4A之頻域處理電路50A至50N中之任一者可實施頻域處理以改良參考信號通道估計。圖6D圖解說明可由圖3之頻域處理電路36及/或圖4B之頻域處理電路50A至50N中之任一者實施之一頻域處理電路之實例方塊圖。
圖6A係根據一實施例之一頻域處理電路62之一方塊圖。頻域處理電路62包含經配置以基於一經去覆蓋頻域參考信號之至少兩個其他頻調產生針對該經去覆蓋頻域參考信號之一頻調之一經估計頻調之一頻調估計電路63。頻調估計電路63亦經配置以用該經估計頻調替換該頻調以使與直流偏移相關聯之失真減小。另一選擇係或另外，頻調估計電路63可基於該經估計頻調修改該頻調以使與直流偏移相關聯之失真減小。頻調估計可涉及內插。頻調估計可涉及外插。頻調估計可係基於多相分解。頻調估計可係基於最小平方估計。頻調估計可係基於任何其他適合技術。頻域處理電路62可執行用於通道估計之任何其他適合頻域處理，諸如參考圖3之頻域處理電路32及/或圖4A之頻域處理電路45論述之任何其他適合特徵。
圖6B係根據一實施例之一頻域處理電路64之一方塊圖。頻域處理電路64包含經配置以對一經去覆蓋頻域參考信號進行脈波塑形之一通道頻率回應脈波塑形電路65。脈波塑形可使與一直流偏移相關聯之失真減小。脈波塑形可涉及一升餘弦脈波及/或任何其他適合脈波。頻域處理電路64可執行用於通道估計之任何其他適合頻域處理，諸如參考圖3之頻域處理電路32及/或圖4A之頻域處理電路45論述之任何其他適合特徵。
圖6C係根據一實施例之一頻域處理電路66之一方塊圖。頻域處理電路66包含頻調估計電路63及通道頻率回應脈波塑形電路65。圖6C圖解說明頻調估計可與通道頻率回應脈波塑形一起實施。頻域處理電路65可執行用於通道估計之任何其他適合頻域處理，諸如參考圖3之頻域處理電路32及/或圖4A之頻域處理電路45論述之任何其他適合特徵。
圖6D係根據一實施例之一頻域處理電路67之一方塊圖。頻域處理電路67包含一擴縮電路68。擴縮電路68可與圖6B及/或圖6C之通道頻率回應脈波塑形電路65一起實施。擴縮電路68可擴縮邊緣頻調之通道頻率回應以補償頻域脈波塑形之影響。頻域處理電路67可執行任何其他頻域處理，諸如參考圖3之頻域處理電路36及/或圖4B之頻域處理電路50A至50N中之任一者論述之任何其他適合特徵。
時域處理技術可應用於改良參考信號通道估計。在某些例項中，時域處理可與本文中所揭示之一或多種頻域處理技術一起實施以改良參考信號通道估計。
圖6E係根據一實施例之一時域處理電路69之一方塊圖。時域處理電路69經配置以執行時域處理及通道脈衝回應分離。時域處理電路69包含一通道脈衝回應擴縮電路70。通道脈衝回應擴縮電路70經配置以基於一功率延遲量變曲線擴縮一通道脈衝回應。擴縮可按一濾波器之每抽頭來應用。時域處理電路69可執行任何其他時域處理，諸如參考圖3之時域處理電路34及/或圖4B之時域處理及通道脈衝回應分離區塊48論述之任何其他適合特徵。
在某些實施例中，一時域處理電路可將一混附雜訊移動至用於該參考信號之循環移位之時域窗之外。例如，可將諧波混附雜訊移動至 不影響通道估計之未經使用之時域空間。可將混附雜訊移動至用於循環移位之時域窗下方之時域索引及/或移動至用於循環移位之時域窗之間的時域索引。
在某些應用中，可在將一參考信號轉變為頻域之前應用時域脈波塑形。時域脈波塑形可減小頻率偏移及/或時序偏移。
根據某些應用，可在將一參考信號轉變為頻域之前應用頻率旋轉。此可減小頻率偏移。
對參考信號通道估計之損害
在一真實世界通信系統中，可存在可影響參考信號通道估計之效能之各種損害。此等損害可包含以下各項中之一或多者：低頻頻調之失真、時域通道脈衝回應洩漏、頻率偏移，或時序偏移。可存在可導致不準確通道估計之各種因素。識別影響參考信號通道估計之效能之損害可係具有挑戰的。透過對SRS通道估計資料之分析來識別本文中所論述之損害。
現將論述低頻頻調之失真。對於具有一零中頻(ZIF)收發器之一RF前端，歸因於本端振盪器(LO)洩漏，直流(DC)偏移可出現於一接收基頻信號中。為了減輕DC偏移分量，在產生用於數位信號處理之基頻樣本之前可將一陷波濾波器應用於一經解調變信號。然而，陷波濾波器可無法完美工作及/或可使DC頻調及一或多個毗鄰頻調失真，尤其在其中上行鏈路符號在時間上不連續之TDD系統中。
若一DC頻調及與該DC頻調毗鄰之頻調失真，則可在頻域中之DC及低頻頻調處之位置引入有色雜訊。有色雜訊頻調可提高時域中之一雜訊底部，並在SRS CE中引入循環間移位干擾。
圖7A係圖解說明來自兩個循環移位的在DC及低頻頻調中具 有某些失真之一經去覆蓋探測參考信號之一量值之一圖表。圖7A中之失真頻調位於DC處及其附近。
圖7B係圖解說明一時域中之失真DC及低頻頻調之一圖表。圖7B中繪製樣本功率與時間索引之關係。失真頻調促成圖7B之曲線中之時域中之一駝峰。失真頻調位於對應於不同循環移位(亦即，圖7B中之c=0及c=1)之通道脈衝回應之間。此等失真頻調可提高雜訊底部。
現將論述時域通道脈衝回應洩漏。當一頻域通道頻率回應透過一IFFT變換成時域時，通道脈衝回應脈波可具有一顯著旁瓣洩漏，該旁瓣洩漏進入用於一或多個其他循環移位之時域窗中。
圖8A係圖解說明一頻域中之一通道頻率回應之一圖表。在頻域中展示循環移位c=0之通道頻率回應。在圖8A中，通道在頻域中係相對平坦的。
圖8B係圖解說明與圖8A之通道頻率回應相關聯之一時域中之功率洩漏之一圖表。在執行一1024點IFFT之後，大部分能量集中在循環移位c=0之一時域窗中，即在圖8B中介於時域索引64與960之間。然而，可存在洩漏至其他窗中之一不可忽略的功率部分。
旁瓣洩漏可使旁瓣洩漏與之相關聯之循環移位之通道頻率回應降級，此可歸因於窗截斷中之信號功率之損失。旁瓣洩漏可藉由引入循環間移位干擾而使一或多個其他循環移位之通道頻率回應效能降級。因此，確保每一循環移位之通道脈衝回應集中在其自身的時域窗中可係重要的。
現將論述頻率偏移。儘管一UE可透過一初始獲取及頻率追蹤環路移除其本端振盪器與一基地台中之一本端振盪器之間的大多數頻率偏 移，但仍可存在一殘餘頻率偏移△f。有時，殘餘頻率偏移可高達數百赫茲。
與一實體上行鏈路控制通道(PUCCH)及實體上行鏈路共用通道(PUSCH)之解調變(其中可透過一解調變參考信號(DMRS)估計及補償頻率偏移)不同，減輕SRS CE中之頻率偏移可更具通道作用，尤其在考慮到不同UE可具有不同頻率偏移值時。
圖9係圖解說明具有一時序偏移、一頻率偏移及不具有時序或頻率偏移之頻域脈波之一圖表。歸因於非零頻率偏移，頻域中之一sinc脈波可經移位，舉例而言，如圖9中所展示。經移位sinc脈波由sinc(f-(△f/Bscs))表示，其中Bscs係副載波間距。在圖9中，在每一副載波之位置處存在一洩漏抽頭，從而導致載波間干擾(ICI)。對於一既定頻率偏移△f，ICI應隨著較大副載波間距值而變得不那麼嚴重。
失真sinc脈波之每一洩漏抽頭皆貢獻於ZC序列之一經加權及經移位版本，此可由方程式11表示。
在已知上文所論述之ZC序列之性質之情形下，在去覆蓋之後，頻域信號係具有相位斜坡之一經加權通道頻率回應，此可由方程式12表示。
在時域中，每一洩漏抽頭皆可導致一時域混附雜訊。時域混附雜訊之功率可與抽頭量值|As|相關。混附雜訊在時域中之位置可自頻域中之相位斜坡之斜率導出。對於第s諧波混附雜訊，時域位置可藉由方程式13來預測。該位置係方程式13中之小區ID之一函數。
時域混附雜訊可導致跨越不同循環移位之干擾。時域混附雜訊可使每一UE之SRS CE效能降級。
現將論述時序偏移。一基地台可透過時序提前(TA)來調整一UE之上行鏈路時序。然而，歸因於TA中之抖動，非零時序偏移可仍存於基地台之一符號邊界與來自一UE之經接收信號之一符號邊界之間。
時序偏移可使得可能在一FFT中選擇較少時域樣本。在頻域中，此可導致OFDM之sinc脈波失真。此失真展示於圖9中。若FFT窗中缺失△T個樣本，則在頻域中，失真sinc脈波可由函數1表示。函數1暗指在每一副載波之位置處存在一洩漏抽頭。
時序偏移導致之降級可係雙重的。首先，時域中可存在符號間干擾(ISI)。其次，失真sinc脈波可導致頻域中之ICI洩漏。
類似於頻率偏移，時序偏移可在一時域通道脈衝回應中引入諧波混附雜訊。諧波混附雜訊之位置可使用方程式13來預測。
改良參考信號通道估計之技術
揭示改良參考信號通道估計之效能之技術。此等技術可使得參考信號通道估計對於一或多個損害更加穩健。經改良參考信號通道估計可補償以下各項中之一或多者：低頻頻調之失真、時域通道脈衝回應洩漏、頻率偏移，或時序偏移。本文中所揭示之改良參考信號通道估計之技術之任何適合組合可彼此一起實施。
參考信號通道估計之一實例方法包含：在一頻域中對一參考 信號進行去覆蓋以產生一經去覆蓋參考信號；基於該經去覆蓋參考信號之至少兩個其他頻調估計該經去覆蓋參考信號之一頻調以產生一經估計頻調；及基於該經估計頻調及進一步處理產生一通道估計，其中該通道估計和一第一節點與一第二節點之間的一無線通信通道相關聯。
減小失真之一種技術係頻調估計。頻調估計可涉及內插及/或外插。在某些例項中，估計可係基於多相分解。在某些應用中，估計可係基於最小平方估計。經估計頻調可用於改良參考信號通道估計。頻調估計可舉例而言使用圖6A及/或圖6C之頻調估計電路63來執行。
現將論述基於多相分解之線性內插及外插。方程式8展示，在頻域中，經去覆蓋SRS含有具有不同線性相位斜坡之通道頻率回應之一總和。在下文論述之一實例中，假定。可使用之任何其他適合值。舉例而言，擴展至係類似的。
在方程式8中之情形下，經去覆蓋SRS可由方程式14表示。
之值按每8個樣本重複。因此，y’(n)可分解成8個子序列，如方程式15中所展示。
對於一特定p，假定Hc(n)在頻域中緩慢改變，子序列y’(8m+p)應係平滑的。因此，在SRS去覆蓋之後，失真DC頻調及毗鄰頻調可使用y’(n)之多相分解來線性內插。
圖10展示內插之一實例。在圖10中，中心8個經去覆蓋SRS頻調可由8個新頻調替換，該8個新頻調自16個頻調內插，其中每一側上8個頻 調。每一經內插頻調可係兩個頻調之平均值，在此實例中，該兩個頻調係來自其各別側之8個頻調，其中。經內插頻調可用於8個經去覆蓋SRS頻調之中心群組。在某些其他應用中，中心8個經去覆蓋SRS頻調可基於8個新的經估計頻調來修改。
圖11展示外插之一實例。類似於內插之處理可延伸至邊緣外插。圖11圖解說明可如何自兩個頻調導出一經外插頻調，該兩個頻調距經外插頻調之距離係的倍數(亦即，在所圖解說明實例中為8的倍數)。
現將論述基於最小平方估計之內插及外插。在某些應用中，最小平方估計可代替基於多相分解之估計來實施。根據某些應用，一系統可在最小平方估計與基於多相分解之估計之間進行選擇。一本端區域中之可用頻調可一起處理以內插失真低頻頻調及/或外插邊緣頻調。在下文論述之一實例中，假定。可使用之任何其他適合值。舉例而言，擴展至係類似的。
在一本端頻率區域中，(n)可由一線性多項式表示，如在方程式16中所展示。
Hc(n)=a c,1 n+a c,0 (方程式16)
每循環移位可存在2個未知係數。因此，所有循環移位之SRS可藉由方程式17來近似。在方程式17中，Ωcs表示主動循環移位之集合。
所有8個循環移位之一係數向量可表示為 a =[a 0,1,a 0,0,a 1,1,a 1,0,......,a 7,1,a 7,0] T 。用於內插之L個頻域樣本之一集合可表示為{(n),n ΩY},ΩY={n 0,n 1,...,n L-1}。然後方程式17可表示為方程式18。在方 程式18中，表示克羅內克積。
y =A． a + v . (方程式18)
方程式19提供方程式18之一最小平方解。
a =(A H A)-1 A H y (方程式19)
待內插之K個頻調之索引可表示為一集合Ω I ={m 0,m 1,...,m K-1}。一B矩陣可定義如下。
經內插低頻頻調可由方程式20表示。方程式21之內插矩陣E係為維度K x L且可預計算。
y LF =Ba =Ey (方程式20)
E=B(A H A)-1 A H (方程式21)
假定Hc(n)在頻域中緩慢改變可係無效的。為了使得內插更準確，可藉由方程式22中所展示之一個二次多項式來近似一本端頻率區域中之Hc(n)。
H c (n)=a c,2 n 2+a c,1 n+a c,0 (方程式22)
每循環移位可存在3個未知係數。因此，所有循環移位之SRS可藉由方程式23來近似。在方程式23中，Ω cs 表示主動循環移位之集合。
導出方程式20及21中的解之相同程序可再次應用於二次多項式假定，除了係數向量被 a =[a 0,2,a 0,1,a 0,0,a 1,2,a 1,1,a 1,0,......,a 7,2,a 7,1,a 7,0] T 替換，且矩陣A及B被以下各項替換之外：
對以上表述之各種修改係可能的。舉例而言，若循環移位未被完全使用，則 a 及A之維度可減小。作為另一實例，為了近似(n)，不同循環移位可視需要採用不同階之多項式。上文所展示之基於最小平方估計之線性及/或二次內插方法可延伸至邊緣頻調之外插。唯一差異可係Ωcs、Ω Y 及Ω I 之定義。
圖12A、圖12B，及圖12C展示關於DC失真、內插及邊緣外插之實例。圖12A展示在使用失真低頻頻調執行一FFT之後之一經接收頻域SRS。圖12B展示將二次內插應用於16個低頻頻調之後之一SRS。與圖12A中之圖表相比，此圖表展示低頻處之經減小失真。圖12C展示在將二次外插 應用於每一側上之16個邊緣頻調之後之一SRS。與圖12A中之圖表相比，此圖表亦展示低頻處之經減小失真。
頻域通道頻率回應脈波塑形可減小功率洩漏，此乃因可減小旁瓣及循環間移位干擾。通道頻率回應脈波塑形可(舉例而言)係使用圖6B及/或圖6C之通道頻率回應脈波塑形電路65來執行。
脈波塑形可應用於經頻域去覆蓋符號。可將邊緣頻調乘以在頻域中平滑之一函數。接著在執行一逆FFT之後，每一循環移位之通道脈衝回應應更集中於其自身的時域窗中。因此，歸因於旁瓣之功率洩漏可被減小，且循環間移位干擾可被降低。
脈波之一個實例係一升餘弦函數。升餘弦脈波可應用於頻帶之每一側上之邊緣頻調及經延伸頻調兩者。圖13A展示一矩形脈波及一升餘弦脈波之窗函數。圖13B展示矩形及升餘弦脈波分別相對於一中心抽頭之時域抽頭功率。圖13B展示與使用一矩形脈波相比，藉由升餘弦脈波進行之脈波塑形減小抽頭功率洩漏。
圖14A係在頻域脈波塑形之前具有經外插邊緣頻調之一SRS之一曲線圖。圖14B係一頻域脈波塑形函數之一曲線圖。在圖14B中，一升餘弦函數之跨度自副載波索引-16至56，以及自519至591。圖14C係在應用頻域脈波塑形之後包含經外插邊緣頻調之SRS之一曲線圖。圖14C展示由於頻域脈波塑形之經減小失真。
在時域中分離每一通道脈衝回應之後，可應用一FFT以在頻域中獲得每一循環移位之通道頻率回應。接著可相應地擴縮每一邊緣頻調之通道頻率回應以補償頻域脈波塑形之影響。圖6E之通道脈衝回應擴縮電路70可執行此擴縮。
改良參考信號通道估計之另一技術係基於一功率延遲量變曲線之時域通道脈衝回應擴縮。擴縮可按每抽頭來應用。擴縮可係最小均方誤差(MMSE)擴縮。使用功率延遲量變曲線，可量測每一抽頭上之一平均功率且可估計雜訊功率。接著可應用每抽頭MMSE擴縮來抑制雜訊抽頭。功率延遲量變曲線及MMSE擴縮可包含功率延遲濾波器、雜訊功率估計，及每抽頭擴縮。
圖15係圖解說明在已執行一逆FFT之後針對循環移位之時域通道脈衝回應之一圖式。此圖式係針對8個循環移位。圖15展示用於雜訊功率估計之抽頭可位於用於不同循環移位之窗之間。
圖16係基於一功率延遲量變曲線之時域通道脈衝回應擴縮之一實例方法160之一流程圖。舉例而言，方法160可使用圖6E之通道脈衝回應擴縮電路70來執行。在方塊162處，對一時域抽頭之抽頭功率進行濾波。一無限脈衝回應濾波器可執行該濾波。方程式24可表示濾波，其中n係一時域索引且α係濾波器之時間常數。
在方塊164處，估計抽頭之雜訊功率。基於經濾波抽頭功率{}，藉由取經選擇副載波之平均值來估計雜訊功率。經選擇副載波可係圖15中所指示之用於雜訊功率估計之抽頭。
在方塊166處，應用每抽頭擴縮。該每抽頭擴縮可涉及臨限值化。在臨限值化中，將具有>a．Pnoise之抽頭選擇為通道抽頭。所有其他抽頭可設定至一值(諸如0之一值)以移除雜訊。每抽頭擴縮可涉及MMSE擴縮。在MMSE擴縮中，第n個抽頭h n 由一因子擴縮。可應用任何其他適合每抽頭擴縮技術。
圖17係可基於一功率延遲量變曲線執行時域通道脈衝回應擴縮之一時域處理電路之一示意性方塊圖。所圖解說明之時域處理電路包含：具有複數個抽頭之一時域濾波器170、一濾波器172、一雜訊估計電路174，及一抽頭擴縮電路176。濾波器172可係一無限脈衝回應濾波器。濾波器172可對時域抽頭之抽頭功率進行濾波。雜訊功率估計電路174經組態以估計對應於用於通道脈衝回應之時間窗之外的副載波之濾波器之抽頭之一子集之雜訊功率。抽頭擴縮電路176經組態以基於經估計雜訊功率對抽頭之至少一部分執行一每抽頭擴縮。抽頭擴縮電路176可基於臨限值化、MMSE擴縮、任何其他適合擴縮操作，或其任何適合組合執行每抽頭擴縮。
時域脈波塑形可應用於改良參考信號通道估計。為了使SRS CE較少受到頻率偏移及時序偏移之影響，TD脈波塑形可在對頻域符號進行一FFT之前應用於OFDM樣本。
圖18係具有時域脈波塑形之處理電路系統180之一示意性方塊圖。處理電路系統180實施針對經接收參考信號之信號處理之部分，用於產生一通道估計。如所圖解說明，處理電路系統180包含：一時域脈波塑形電路182、快速傅立葉變換區塊41，及參考信號提取電路42。
時域脈波塑形電路182在藉由快速傅立葉變換區塊41將經接收時域樣本轉換為頻域之前應用脈波塑形。此可減小頻率偏移及/或時序偏移。時域脈波塑形電路182可使用本文中所揭示之任何適合處理電路系統來實施。時域脈波塑形電路182之一輸出可耦合至本文中所揭示之快速傅立葉變換區塊中之任一者(諸如圖3之快速傅立葉變換區塊31及/或圖4A之快速傅立葉變換區塊41)之一輸入。FFT區塊41可將歸因於時域脈波塑形電路182之時域脈波塑形而具有一經減小時間偏移及/或頻率偏移之一頻域信號提供至 參考信號提取電路42。
在不具有時域脈波塑形電路182之情形下，應用於一快速傅立葉變換區塊之一脈波可係一矩形脈波。時域脈波塑形電路182可舉例而言應用一升餘弦脈波。時域脈波塑形電路182可應用使時間偏移及/或頻率偏移減小之任何其他適合脈波。
圖19A係時域中之一矩形脈波及一升餘弦脈波之一圖表。圖19A之升餘弦脈波具有1之一滾降因子。圖19A之升餘弦脈波係可藉由圖18之脈波塑形電路182產生以減小時序偏移及/或頻率偏移之一脈波之一實例。在一個實例應用中，快速傅立葉變換區塊41可產生一2048點FFT。本文中之教示可類似地應用於其他適合FFT大小。在執行一FFT之後的頻域中之脈波可由方程式25表示，其中f被正規化為副載波間距(SCS)。
圖19B係頻域中之一sinc脈波及升餘弦脈波之一圖表。與sinc脈波相比，升餘弦脈波之旁瓣之衰減在頻域中明顯更快，如圖19B中所展示。因此，對於升餘弦脈波，ICI洩漏在頻域中可明顯更小。
對於具有滾降因子為1之一升餘弦脈波，旁瓣之衰減在頻域中明顯更快，且除了第一諧波混附雜訊之外，ICI洩漏明顯更小。藉由應用時域脈波塑形，可存在對毗鄰梳之一相對大的洩漏，舉例而言，歸因於頻域中之主瓣之雙倍寬度。因此，在其中沒有SRS或其他參考信號分配至一緊鄰梳中之應用中，應用時域脈波塑形可係有利的。
具有一偏移之頻率旋轉可應用於改良參考信號通道估計。此可減小使用者當中之干擾。
若一基地台維持針對每一UE之頻率偏移之一估計，則估計可來自PUSCH及/或PUCCH解調變。此外，若基地台可最可能自先前SRS CE識別具有主導經接收SRS功率之UE，則在時域中，可以主導UE之頻率偏移來旋轉經接收樣本。應用具有一個偏移之頻率旋轉可藉由方程式26來模型化。
在某些應用中，可基於所有UE之經估計頻率偏移及SRS功率將一頻率偏移判定為所有循環移位之質心。
圖20係具有頻率旋轉之處理電路系統200之一示意性方塊圖。處理電路系統200實施針對經接收參考信號之信號處理之部分，用於產生一通道估計。如所圖解說明，處理電路系統200包含：一頻率旋轉電路202、快速傅立葉變換區塊41，及參考信號提取電路42。
頻率旋轉電路202可執行頻率旋轉以補償一頻率偏移。頻率偏移可係來自一主導UE。頻率偏移可係來自所有循環移位之一質心。頻率旋轉電路202可減小頻率偏移。頻率旋轉電路202可包含一混合器。頻率旋轉電路202可使用本文中所揭示之任何適合處理電路系統來實施。頻率旋轉電路202之一輸出可耦合至本文中所揭示之快速傅立葉變換區塊中之任一者(諸如圖3之快速傅立葉變換區塊31及/或圖4A之快速傅立葉變換區塊41)之一輸入。圖20中之FFT區塊41可將歸因於頻率旋轉電路202之頻率旋轉而具有一經減小頻率偏移之一頻域信號提供至參考信號提取電路42。
混附雜訊可移動至未經使用之時間空間以改良參考信號通道估計。當偵測到循環移位之通道脈衝回應時，可存在不影響通道估計之未經使用之時域空間。混附雜訊及/或其他雜訊可移動至此未經使用之時域空 間以改良通道估計。
圖21係偵測一參考信號之循環移位之一方法210之一流程圖，其中混附雜訊被移動至一未經使用之時間空間中。在方塊212處，可選擇一小區識別符(ID)。當在SRS中停用群組及序列跳躍時，由於諧波混附雜訊之位置可預測為小區ID之一函數，因此可選擇一適當小區ID以使得第一諧波混附雜訊落入未被循環移位中之任一者使用之區域中。
基於在方塊212處選擇之小區ID，在方塊214，將混附雜訊(例如，第一諧波混附雜訊)移動至用於循環移位之時域窗之外的區域中。此技術可有利地與時域脈波塑形一起(例如，與圖18之時域脈波塑形電路182一起)應用，此乃因在應用時域脈波塑形之後第一諧波混附雜訊可係主導的，且在方法210中此等混附雜訊可移動至用於循環移位之時域窗之外。在方塊216處，可偵測循環移位。此循環移位偵測可在不具有位於用於循環移位之時域窗之外而影響通道估計的諧波混附雜訊之情形下執行。可基於經偵測循環移位及進一步處理執行通道估計。
混附雜訊可藉由圖3之時域處理電路34及/或圖4B之時域處理及通道脈衝回應分離電路48移動至未經使用之時間空間。
作為一實例，若一個梳中存在4個SRS循環移位，其中循環移位c=0、1、2及3，則藉由選擇表示為nCID之一小區ID使得nCIDmod 30=15，可將時域中之第一諧波混附雜訊移動至用於四個循環移位之截斷窗之外的一區域中。
圖22圖解說明用於四個循環移位之第一諧波混附雜訊之位置。如圖22中所展示，諧波混附雜訊在用於4個循環移位之時域窗之外。在圖22中，混附雜訊移動至用於循環移位之窗之時域索引下方之時域索引 中。
作為另一實例，若一個梳中存在8個SRS循環移位，且若用於每一循環移位之時域窗大小設定至64，則小區ID可設定至12或17，使得第一諧波混附雜訊位於用於所有循環移位之時域窗之外。可在具有較多循環移位之情形下存在較小時域窗。在某些例項中，混附雜訊可移動至用於循環移位之窗之間的時域索引。
MIMO環境
圖23係圖解說明其中可執行基於一參考信號之通道估計之一實例多輸入多輸出(MIMO)網路環境230之一圖式。在MIMO網路環境230中，各種UE可與一網路系統無線地通信。此等無線通信可達成高處理量。用於與UE無線地通信之MIMO網路環境230之天線可係分散式的。可基於參考信號估計，使用本文中所揭示之任何適合技術，在MIMO網路環境230中執行針對不同節點之間的通道之通道估計。
各種標準及/或協定可在MIMO網路環境230中實施以在一基地台與一無線通信裝置之間無線地傳達資料。某些無線裝置可使用一正交分頻多工(OFDM)數位調變方案經由一實體層進行通信。用於在環境230中進行無線通信之實例標準及協定可包含：第三代夥伴計劃(3GPP)長程演進(LTE)、高級長程演進(高級LTE)、3GPP新無線電(NR)(亦稱為5G)、全域行動通信系統(GSM)、GSM增強資料速率演進(EDGE)、全球互通微波存取(WiMAX)，及IEEE 802.11標準(可稱為Wi-Fi)。在某些系統中，一無線電存取網路(RAN)可包含與一或多個演進節點B(亦通常表示為增強節點B、eNodeB或eNB)、gNB，或任何其他適合節點B(xNB)相關聯之一或多個基地台。在某些其他實施例中，無線電網路控制器(RNC)可提供為基地台。一 基地台在無線網路與諸如網際網路之一核心網路之間提供一橋接器。基地台可經包含以促進無線網路之無線通信裝置之資料之交換。一基地台可根據本文中所揭示之任何適合原則及優點執行參考信號通道估計。
一無線通信裝置可稱為一使用者設備(UE)。UE可係由一使用者使用之一裝置，諸如一智慧型電話、一膝上型電腦、一平板電腦、蜂巢式電話、一可佩帶計算裝置(諸如智慧型眼鏡或一智慧型手錶或一耳機)、一或多個網路器具(例如，消費者網路器具或工業廠房設備)、具有連接性之一工業機器人，或一運載工具。在某些實施方案中，UE可包含經組態以收集資料並將資料無線地提供至連接至諸如網際網路之一核心網路之一裝置(例如，伺服器)之一感測器或其他網路裝置。此等裝置可稱為物聯網(IoT)裝置。一下行鏈路(DL)傳輸通常稱為自基地收發器(BTS)或eNodeB至一UE之一通信。一上行鏈路(UL)傳輸通常稱為自UE至BTS之一通信。
圖23圖解說明一協同式或雲端無線電存取網路(C-RAN)環境100。在環境230中，eNodeB功能性在一基頻單元(BBU)240與多個遠端無線電單元(RRU)(例如，RRU 255、RRU 265及RRU 275)之間細分。圖23之網路系統包含BBU 240以及RRU 255、265及275。一RRU可包含多個天線且天線中之一或多者可充當一傳輸接收點(TRP)。RRU及/或一TRP可稱為一服務節點。BBU 240可諸如經由一光纖連接實體地連接至RRU。BBU 240可將操作資訊提供至一RRU以控制來自RRU之信號連同待傳輸之資料及有效負載資料之傳輸及接收。RRU可將自與RRU相關聯之一服務區內之UE接收之資料提供至網路。如圖23中所展示，RRU 255將服務提供至一服務區250內之裝置。RRU 265將服務提供至一服務區260內之裝置。RRU 275將服務提供至一服務區270內之裝置。舉例而言，無線下行鏈路傳輸服務可 被提供至服務區270以將資料傳達至服務區270內之一或多個裝置。
在環境230中，一網路系統可經由分散式MIMO與UE無線地通信。舉例而言，UE 283可使用網路系統之天線無線地傳達MIMO資料，該等天線包含RRU 255之至少一個天線、RRU 265之至少一個天線，及RRU 275之至少一個天線。作為另一實例，UE 282可使用包含RRU 255之至少一個天線及RRU 265之至少一個天線之分散式天線無線地傳達MIMO資料。作為又一個實例，UE 288可使用包含RRU 255之至少一個天線及RRU 275之至少一個天線之分散式天線無線地傳達MIMO資料。舉例而言，本文中所揭示之參考信號通道估計之任何適合原則及優點可在此等分散式MIMO應用中實施。
所圖解說明RRU 255、RRU 265，及RRU 275包含多個天線且可提供MIMO通信。舉例而言，一RRU可配備有可用於同時傳輸至諸如一UE之一或多個接收器之各種數目之傳輸天線(例如，2個、4個、8個或更多個)。接收裝置可包含一個以上接收天線(例如，2個、4個等)。接收天線之一陣列可經組態以同時自RRU接收傳輸。包含在一RRU中之每一天線可個別地經組態以根據一特定時間、頻率、功率及方向組態進行傳輸及/或接收。類似地，包含在一UE中之每一天線可個別地經組態以根據一特定時間、頻率、功率及方向組態進行傳輸及/或接收。組態可由BBU 240提供。
圖23中所展示之服務區可將通信服務提供至一不同種類的使用者設備群體。舉例而言，服務區250可包含一UE叢集290，諸如與參加一大型事件之使用者相關聯之裝置之一群組。服務區250亦可包含遠離UE叢集290定位之一額外UE 292。一行動使用者設備294可自服務區260移動至服務區270。一行動使用者設備之另一實例係一運載工具286，該運載工具 可包含用於即時導航、板上資料服務(例如，串流視訊或音訊)或其他資料應用之無線通信之一收發器。環境230可包含經組態用於無線通信之半行動或靜止UE，諸如機器人裝置288(例如，機器人手臂、一自主驅動單元，或其他工業或商業機器人)或一電視284。
一使用者設備282可位於具有重疊服務之一區(例如，服務區250及服務區260)內。環境230中之每一裝置可具有不同效能需求，在某些例項中，該等效能需求可與其他裝置之需求衝突。
網路環境230中之通道估計，諸如根據本文中所揭示之任何適合原則及優點使用參考信號進行的UE與RRU之間的通道之估計，對各種損害中之一或多者可係穩健的。一無線通信通道之一準確估計對於校準及/或預編碼可係有用的。
結論
取決於實施例，本文中所闡述之程序或演算法中之任一者之某些動作、事件或功能可以一不同序列執行，可經添加，合併或一起省略(例如，並非所有所闡述操作或事件對於程序或演算法之實踐係必需的)。而且，在某些實施例中，操作或事件可同時執行，例如透過多執行緒處理、中斷處理，或者多個處理器或處理器核心或在其他並行架構上執行，而非依序執行。
本文中所使用之條件語言，尤其諸如「可(can)」、「可(could)」、「可(might)」、「可(may)」、「例如(e.g.)」、「諸如(such as)」等等，除非另外具體陳述或另外在內容脈絡內如所使用而理解，否則通常旨在傳達某些實施例包含而其他實施例不包含某些特徵、元件及/或操作。因此，此條件語言通常不意欲暗示一或多個實施例以任一方式需要此等特 徵、元件及/或操作，或一或多個實施例在具有或不具有其他輸入或提示之情形下必然包含用於決定此等特徵、元件及/或步驟是否包含於任一特定實施例中或在任一特定實施例中執行之邏輯。術語「包括(comprising)」、「包含(including)」等等係同義詞，且以一開放方式包含性地使用，且不排除額外元件、特徵、動作、操作等等。另外，當在本申請案中使用時，字詞「本文中(herein)」、「上文(above)」、「下文(below)」及類似含義之字詞應將本申請案視為一整體而非本申請案之任何特定部分。在內容脈絡准許之情形下，在上文實施方式中使用單數或複數之字詞亦可分別包含複數或單數。此外，術語「或(or)」以其包含性意義(而非以其排他性意義)使用，使得當使用時，舉例而言，以連接一元件清單，術語「或(or)」意指清單中之一個元件、某些元件或所有元件。
諸如片語「X、Y、Z中之至少一者」之析取語言，除非另外具體陳述，否則與通常用於呈現一項目、項等可係X、Y或Z，或者其任一組合(例如，X、Y及/或Z)之內容脈絡一起理解。因此，此類析取語言通常不意欲且不應暗示某些實施例需要呈現X中之至少一者、Y中之至少一者，或Z者中之至少一者中的每一者。
除非另外明確陳述或自內容脈絡大體理解，諸如「一(a)」或「一(an)」之冠詞通常應解釋為包含一或多個所闡述項目。因此，諸如「經組態以......之一裝置」之片語意欲包含一或多個所敘述裝置。此一或多個所敘述裝置亦可共同地經組態以執行所陳述敘述。舉例而言，「經組態以執行敘述A、B及C之一處理器」可包含經組態以執行敘述A之一第一處理器，該第一處理器與經組態以執行敘述B及C之一第二處理器一起工作。
如本文中通常所使用，字詞「耦合(coupled)」係指兩個或兩 個以上元件可直接彼此耦合，或藉助於一或多個中間元件耦合。同樣，如本文中通常所使用，字詞「經連接(connected)」係指兩個或兩個以上元件可直接連接或藉助於一或多個中間元件連接。連接可經由一空中介面及/或經由導線及/或經由光纖及/或經由任何其他適合連接。
如本文中所使用，術語「判定(determine)」或「判定(determining)」囊括各種各樣之動作。舉例而言，「判定」可包含在不具有使用者干預之情形下經由一硬體元件來計算、運算、處理、導出、產生、獲得、查找(例如，在一表、一資料庫或另一資料結構中查找)、確定等等。此外，「判定(determining)」可包含在不具有使用者干預之情形下經由一硬體元件來接收(例如，接收資訊)、存取(例如，在一記憶體中存取資料)。此外，「判定(determining)」可包含在不具有使用者干預之情形下經由一硬體元件來解析、選擇、抉擇、建立等等。
雖然以上詳細說明已展示、闡述及指出應用於各種實施例之新穎特徵，但可理解，可在不背離本發明之精神之情形下，在所圖解說明之裝置或演算法之形式及細節方面做出各種省略、替換及改變。舉例而言，本文中所闡述之電路區塊及/或方法方塊可經刪除、移動、添加、細分、組合，以一不同次序配置及/或修改。可以各種不同方式實施此等方塊中之每一者。本文中所揭示之方法中之任一者之任何部分可與儲存在由一或多個處理器執行之一非暫時性電腦可讀儲存媒體上之特定指令相關聯地執行。如可認識到，本文中所闡述之某些實施例可體現在不提供本文中所陳述之所有特徵及益處之形式內，此乃因某些特徵可與其他特徵分開使用或實踐。因此，本文中所揭示之某些實施例之範疇係由隨附申請專利範圍而非以上說明來指示。歸屬於申請專利範圍之等效內容之意義及範圍內之 所有改變皆將涵蓋於申請專利範圍之範疇內。
30:處理電路系統
31:快速傅立葉變換區塊
32:第一頻域處理電路/頻域處理電路
33:逆快速傅立葉變換區塊
34:時域處理電路
35:第二快速傅立葉變換區塊
36:第二頻域處理電路/頻域處理電路
37:通道估計電路

Claims (23)

  1. 一種參考信號通道估計之方法，該方法包括：接收用於通道估計之一參考信號；在一頻域中，對該參考信號進行去覆蓋以產生一經去覆蓋參考信號；在該去覆蓋之後，對該經去覆蓋參考信號進行頻域處理，以使該經去覆蓋參考信號中之一直流偏移的失真減小，其中該頻域處理包括基於該經去覆蓋信號之至少兩個其他頻調來產生針對該經去覆蓋信號之一頻調之一經估計頻調；在該頻域處理之後，進行時域處理，以使與該經去覆蓋參考信號相關聯之一雜訊底部減小；及基於該頻域處理及該時域處理來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一通信通道相關聯。
  2. 如請求項1之方法，其中該頻域處理包括:用該經估計頻調來替換該頻調，以使與該直流偏移相關聯之失真減小。
  3. 如請求項1之方法，其中該頻域處理包括：基於該經估計頻調來修改該頻調，以使與該直流偏移相關聯之失真減小。
  4. 如請求項1之方法，進一步包括：在該去覆蓋之前，對該參考信號進行脈波塑形。
  5. 如請求項1之方法，進一步包括：在該去覆蓋之前，基於一頻率偏移之一指示符來旋轉該參考信號。
  6. 如請求項1之方法，其中該參考信號係一上行鏈路探測參考信號。
  7. 如請求項1之方法，其中該第一節點係一使用者設備，且該第二節點係一網路節點。
  8. 一種參考信號通道估計之方法，該方法包括：接收用於通道估計之一參考信號；在一頻域中，對該參考信號進行去覆蓋以產生一經去覆蓋參考信號；在該去覆蓋之後，對該經去覆蓋參考信號進行頻域處理，以使該經去覆蓋參考信號中之一直流偏移的失真減小；在該頻域處理之後，進行時域處理，以使與該經去覆蓋參考信號相關聯之一雜訊底部減小，其中該時域處理包括：估計對應於通道脈衝回應之間之副載波之時域抽頭之一子集的雜訊功率；及基於該估計，對該等時域抽頭之至少一部分執行一每抽頭擴縮；及基於該頻域處理及該時域處理來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一通信通道相關聯。
  9. 如請求項8之方法，其中該頻域處理包括：基於該經去覆蓋信號之至少兩個其他頻調來產生針對該經去覆蓋信號之一頻調之一經估計頻調。
  10. 如請求項8之方法，其中該每抽頭擴縮涉及最小均方誤差擴縮或臨限值化中之至少一者。
  11. 一種參考信號通道估計之方法，該方法包括：接收用於通道估計之一參考信號；在一頻域中，對該參考信號進行去覆蓋以產生一經去覆蓋參考信號；在該去覆蓋之後，對該經去覆蓋參考信號進行頻域處理，以使該經去覆蓋參考信號中之一直流偏移的失真減小；在該頻域處理之後，進行時域處理，以使與該經去覆蓋參考信號相關聯之一雜訊底部減小，其中該時域處理包括：將一混附雜訊移動至用於該參考信號之循環移位的時域窗之外；及基於該頻域處理及該時域處理來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一通信通道相關聯。
  12. 如請求項11之方法，其中該頻域處理包括：對該經去覆蓋信號進行脈波塑形，以使與該直流偏移相關聯之失真減小。
  13. 如請求項11之方法，進一步包括：在該去覆蓋之前，對該參考信號 進行脈波塑形。
  14. 如請求項11之方法，其中該頻域處理包括：基於該經去覆蓋信號之至少兩個其他頻調來產生針對該經去覆蓋信號之一頻調之一經估計頻調。
  15. 一種用於通道估計之系統，該系統包括：一頻域處理電路，其經組態以產生一經去覆蓋頻域參考信號、基於該經去覆蓋頻域參考信號之至少兩個其他頻調來產生針對該經去覆蓋頻域參考信號之一頻調之一經估計頻調、並用該經估計頻調來替換該頻調，以便使與一直流偏移相關聯之失真減小；一時域處理電路，其具有經耦合至該頻域處理電路之一輸出之一輸入，該時域處理電路經組態以抑制時域通道脈衝回應洩漏；及一通道估計電路，其經組態以基於該時域處理電路之一輸出來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一無線通信通道相關聯。
  16. 如請求項15之系統，進一步包括經組態以對一參考信號進行脈波塑形之一第二時域處理電路，該第二時域處理電路具有經耦合至該頻域處理電路之一輸入之一輸出。
  17. 如請求項15之系統，進一步包括經組態以基於一頻域偏移之一指示符來旋轉一參考信號以藉此減小該頻域偏移之一第二時域處理電路，該第二時域處理電路具有經耦合至該頻域處理電路之一輸入之一輸出。
  18. 如請求項15之系統，進一步包括經組態以執行每循環移位頻域處理之一第二頻域處理電路，其中該第二頻域處理電路係耦合於該時域處理電路與該通道估計電路之間。
  19. 如請求項15之系統，其中該第一節點係一使用者設備，且該第二節點係一網路節點。
  20. 一種用於通道估計之系統，該系統包括：一頻域處理電路，其經組態以產生一經去覆蓋頻域參考信號並處理該經去覆蓋頻域參考信號，以便使與一直流偏移相關聯之失真減小；及一時域處理電路，其具有經耦合至該頻域處理電路之一輸出之一輸入，該時域處理電路經組態以抑制時域通道脈衝回應洩漏，其中該時域處理電路包括：一濾波器，其包括複數個抽頭；一雜訊功率估計電路，其經組態以估計對應於通道脈衝回應之間之副載波之該濾波器之該等抽頭之一子集的雜訊功率；及一濾波器抽頭擴縮電路，其經組態以基於該經估計雜訊功率，對該濾波器之該等抽頭的至少一部分執行一每抽頭擴縮；及一通道估計電路，其經組態以基於該時域處理電路之一輸出來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一無線通信通道相關聯。
  21. 如請求項20之系統，其中該頻域處理電路經組態以對該經去覆蓋頻域參考信號執行脈波塑形，以使與該直流偏移相關聯之失真減小。
  22. 一種用於通道估計之系統，該系統包括：一頻域處理電路，其經組態以自一參考信號產生一經去覆蓋頻域參考信號並處理該經去覆蓋頻域參考信號，以便使與一直流偏移相關聯之失真減小；及一時域處理電路，其具有經耦合至該頻域處理電路之一輸出之一輸入，該時域處理電路經組態以抑制時域通道脈衝回應洩漏，其中該時域處理電路經組態以將一混附雜訊移動至用於經處理之該去覆蓋頻域參考信號之一時域版本之循環移位的時域窗之外；及一通道估計電路，其經組態以基於該時域處理電路之一輸出來產生一通道估計，其中該通道估計係和一第一節點與一第二節點之間之一無線通信通道相關聯。
  23. 如請求項22之系統，其中該頻域處理電路經組態以基於該經去覆蓋頻域參考信號之至少兩個其他頻調來產生針對該經去覆蓋頻域參考信號之一頻調之一經估計頻調，並用該經估計頻調來替換該頻調，以使與該直流偏移相關聯之失真減小。
TW110111733A 2020-03-31 2021-03-31 用於參考信號通道估計之方法及系統 TWI894246B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/836,668 US11411779B2 (en) 2020-03-31 2020-03-31 Reference signal channel estimation
US16/836,668 2020-03-31

Publications (2)

Publication Number Publication Date
TW202143667A TW202143667A (zh) 2021-11-16
TWI894246B true TWI894246B (zh) 2025-08-21

Family

ID=77930135

Family Applications (1)

Application Number Title Priority Date Filing Date
TW110111733A TWI894246B (zh) 2020-03-31 2021-03-31 用於參考信號通道估計之方法及系統

Country Status (7)

Country Link
US (1) US11411779B2 (zh)
EP (1) EP4128676A4 (zh)
KR (1) KR102863206B1 (zh)
CN (1) CN115398866A (zh)
CA (1) CA3170036A1 (zh)
TW (1) TWI894246B (zh)
WO (1) WO2021202159A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12052121B2 (en) * 2020-09-01 2024-07-30 Qualcomm Incorporated Neural network based line of sight detection and angle estimation for positioning
CN116648867A (zh) 2020-12-16 2023-08-25 艾斯康实验室公司 具有准全向波束和定向波束的无线通信
US20230396379A1 (en) * 2020-12-24 2023-12-07 Qualcomm Incorporated Sounding reference signal repetition configuration
BR112023012471A2 (pt) * 2020-12-31 2023-09-26 Qualcomm Inc Medição e relatório de similaridade de perfil de atraso de potência (pdp)
US20250016556A1 (en) * 2021-12-06 2025-01-09 Qualcomm Incorporated Secret key extraction for physical layer protection in a wireless communications system
CN115834008B (zh) * 2022-10-19 2023-10-24 佰路威科技(上海)有限公司 探测参考信号生成方法及相关设备
KR102792891B1 (ko) * 2024-02-21 2025-04-07 지씨티 세미컨덕터 인코포레이티드 Ofdm 기반 통신 시스템에서의 순환 쉬프트 추정 기법
CN119363527B (zh) * 2024-12-25 2025-04-29 北京国科天迅科技股份有限公司 数据传输方法、装置、计算机设备和可读存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118771A1 (en) * 2000-11-29 2002-08-29 Peter Larsson Methods and arrangements in a telecommunications system
US20120182857A1 (en) * 2010-10-25 2012-07-19 Texas Instruments Incorporated Sounding Reference Signal Processing for LTE
US20130266093A1 (en) * 2010-12-22 2013-10-10 Telefonaktiebolaget L M Ericsson (Publ) Methods and Receiver for Positioning of Clock Related Spurious Signals
TW201448506A (zh) * 2008-02-04 2014-12-16 Nokia Corp 藉遮罩來傳遞天線組態資訊之方法及裝置（一）
US20180054269A1 (en) * 2016-08-22 2018-02-22 Phasorlab, Inc. Time-Domain and Frequency-Domain Approach to Frequency Offset Correction Method for LTE SC-FDMA Uplink
US20190089504A1 (en) * 2016-03-07 2019-03-21 Lg Electronics Inc. METHOD FOR TRANSMITTING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING NARROWBAND IoT, AND DEVICE THEREFOR

Family Cites Families (829)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469115A (en) 1994-04-28 1995-11-21 Qualcomm Incorporated Method and apparatus for automatic gain control in a digital receiver
ZA95605B (en) 1994-04-28 1995-12-20 Qualcomm Inc Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
TW294867B (zh) 1994-12-23 1997-01-01 Qualcomm Inc
US6006108A (en) 1996-01-31 1999-12-21 Qualcomm Incorporated Digital audio processing in a dual-mode telephone
US5870431A (en) 1996-06-27 1999-02-09 Qualcomm Incorporated ROM-based finite impulse response filter for use in mobile telephone
US7184426B2 (en) 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US6574211B2 (en) 1997-11-03 2003-06-03 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
US6894994B1 (en) 1997-11-03 2005-05-17 Qualcomm Incorporated High data rate wireless packet data communications system
US9118387B2 (en) 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US7289473B1 (en) 1997-11-03 2007-10-30 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US6134440A (en) 1998-01-26 2000-10-17 Qualcomm Inc. Method and apparatus for performing mobile station assisted hard handoff using off line searching
US6147964A (en) 1998-05-07 2000-11-14 Qualcomm Inc. Method and apparatus for performing rate determination using orthogonal rate-dependent walsh covering codes
US6107878A (en) 1998-08-06 2000-08-22 Qualcomm Incorporated Automatic gain control circuit for controlling multiple variable gain amplifier stages while estimating received signal power
US6798736B1 (en) 1998-09-22 2004-09-28 Qualcomm Incorporated Method and apparatus for transmitting and receiving variable rate data
US6208873B1 (en) 1998-11-23 2001-03-27 Qualcomm Incorporated Method and apparatus for transmitting reverse link power control signals based on the probability that the power control command is in error
US6205129B1 (en) 1999-01-15 2001-03-20 Qualcomm Inc. Method and apparatus for variable and fixed forward link rate control in a mobile radio communications system
US6434376B1 (en) 1999-02-12 2002-08-13 Qualcomm, Inc. Slotted idle mode for dual mode subscriber stations
JP4455768B2 (ja) 1999-03-12 2010-04-21 クゥアルコム・インコーポレイテッド 通信システムの逆方向リンク電力制御チャネルでの電力割当てのための方法および装置
US6363102B1 (en) 1999-04-23 2002-03-26 Qualcomm Incorporated Method and apparatus for frequency offset correction
US6377607B1 (en) 1999-05-13 2002-04-23 Qualcomm Incorporated System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation
US8050198B2 (en) 1999-05-24 2011-11-01 Qualcomm Incorporated Method and system for scheduling data transmission in communication systems
US7155246B2 (en) 1999-06-30 2006-12-26 Qualcomm, Incorporated Transmitter directed code division multiple access system using multi-users diversity to maximize throughput while equitably providing access to users
US6449490B1 (en) 1999-05-24 2002-09-10 Qualcomm Incorporated Transmitter directed code division multiple access system using path diversity to equitably maximize throughput
US6285861B1 (en) 1999-06-14 2001-09-04 Qualcomm Incorporated Receiving station with interference signal suppression
US6466558B1 (en) 1999-06-14 2002-10-15 Qualcomm Incorporated Selection mechanism for signal combining methods
US6397070B1 (en) 1999-07-21 2002-05-28 Qualcomm Incorporated Method and apparatus for estimating reverse link loading in a wireless communication system
US6633552B1 (en) 1999-08-06 2003-10-14 Qualcomm Incorporated Method and apparatus for determining the closed loop power control set point in a wireless packet data communication system
US6426971B1 (en) 1999-09-13 2002-07-30 Qualcomm Incorporated System and method for accurately predicting signal to interference and noise ratio to improve communications system performance
TW498664B (en) 1999-09-17 2002-08-11 Qualcomm Inc Method and apparatus for rotating a phase of a modulated signal
US7206580B2 (en) 1999-11-04 2007-04-17 Qualcomm Incorporated Method and apparatus for performing handoff in a high speed communication system
US6661833B1 (en) 2000-01-31 2003-12-09 Qualcomm Incorporated PN generators for spread spectrum communications systems
US6694469B1 (en) 2000-04-14 2004-02-17 Qualcomm Incorporated Method and an apparatus for a quick retransmission of signals in a communication system
US7088701B1 (en) 2000-04-14 2006-08-08 Qualcomm, Inc. Method and apparatus for adaptive transmission control in a high data rate communication system
US6678257B1 (en) 2000-09-25 2004-01-13 Qualcomm, Incorporated Methods and apparatus for allocation of power to base station channels
US7051268B1 (en) 2000-09-29 2006-05-23 Qualcomm Incorporated Method and apparatus for reducing power consumption of a decoder in a communication system
US6985516B1 (en) 2000-11-27 2006-01-10 Qualcomm Incorporated Method and apparatus for processing a received signal in a communications system
US6693920B2 (en) 2000-12-14 2004-02-17 Qualcomm, Incorporated Method and an apparatus for a waveform quality measurement
US6714526B2 (en) 2000-12-15 2004-03-30 Qualcomm Incorporated Method and apparatus for code assignment in a spread spectrum wireless communication system
US7010073B2 (en) 2001-01-19 2006-03-07 Qualcomm, Incorporated Delay lock loops for wireless communication systems
US7020225B2 (en) 2001-01-19 2006-03-28 Qualcomm Inc. Frequency searcher and frequency-locked data demodulator using a programmable rotator
US6813478B2 (en) 2001-02-12 2004-11-02 Qualcomm Inc Method and apparatus for searching a gated pilot
US7068707B2 (en) 2001-03-08 2006-06-27 Qualcomm, Inc. Method and apparatus for tracking signals in a wireless communication system
US6680968B2 (en) 2001-05-17 2004-01-20 Qualcomm Incorporated CDMA searcher with time offset compensation
US6987778B2 (en) 2001-05-22 2006-01-17 Qualcomm Incorporated Enhanced channel interleaving for optimized data throughput
WO2003001838A1 (en) 2001-06-26 2003-01-03 Qualcomm Incorporated Method and apparatus for adaptive server selection in a data communication system
US6757520B2 (en) 2001-06-26 2004-06-29 Qualcomm Incorporated Method and apparatus for selecting a serving sector in a data communication system
US7251229B2 (en) 2001-08-06 2007-07-31 Qualcomm Incorporated Systems and techniques for measuring relative power
US7596090B2 (en) 2001-10-04 2009-09-29 Qualcomm Incorporated Capacity-efficient flow control mechanism
US6680925B2 (en) 2001-10-16 2004-01-20 Qualcomm Incorporated Method and system for selecting a best serving sector in a CDMA data communication system
US7012883B2 (en) 2001-11-21 2006-03-14 Qualcomm Incorporated Rate selection for an OFDM system
US6594501B2 (en) 2001-12-14 2003-07-15 Qualcomm Incorporated Systems and techniques for channel gain computations
US7133437B2 (en) 2002-01-31 2006-11-07 Qualcomm Incorporated Pilot interpolation for a gated pilot with compensation for induced phase changes
US6738608B2 (en) 2002-02-12 2004-05-18 Qualcomm Incorporated Frequency-timing control loop for wireless communication systems
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
US7209517B2 (en) 2002-03-04 2007-04-24 Qualcomm Incorporated Method and apparatus for estimating a maximum rate of data and for estimating power required for transmission of data at a rate of data in a communication system
US6748201B2 (en) 2002-03-28 2004-06-08 Qualcomm Inc. Gain control for communications device
US7072628B2 (en) 2002-04-05 2006-07-04 Qualcomm, Incorporated Method and apparatus for determining receive diversity in mobile station
US6801580B2 (en) 2002-04-09 2004-10-05 Qualcomm, Incorporated Ordered successive interference cancellation receiver processing for multipath channels
US7266156B2 (en) 2002-04-26 2007-09-04 Qualcomm Incorporated Method and apparatus for reducing peak to average power ratio of a multi-carrier signal
US6920504B2 (en) 2002-05-13 2005-07-19 Qualcomm, Incorporated Method and apparatus for controlling flow of data in a communication system
US7184713B2 (en) 2002-06-20 2007-02-27 Qualcomm, Incorporated Rate control for multi-channel communication systems
US7239622B2 (en) 2002-09-19 2007-07-03 Qualcomm Incorporated Modified scheduling technique for a telecommunication system
US8411594B2 (en) 2002-09-20 2013-04-02 Qualcomm Incorporated Communication manager for providing multimedia in a group communication network
US7130282B2 (en) 2002-09-20 2006-10-31 Qualcomm Inc Communication device for providing multimedia in a group communication network
US8165619B2 (en) 2002-10-02 2012-04-24 Qualcomm Incorporated Power allocation for power control bits in a cellular network
US20040121730A1 (en) 2002-10-16 2004-06-24 Tamer Kadous Transmission scheme for multi-carrier MIMO systems
US6873606B2 (en) 2002-10-16 2005-03-29 Qualcomm, Incorporated Rate adaptive transmission scheme for MIMO systems
US8213390B2 (en) 2002-10-24 2012-07-03 Qualcomm Incorporated Reverse link automatic repeat request
US7039001B2 (en) 2002-10-29 2006-05-02 Qualcomm, Incorporated Channel estimation for OFDM communication systems
US6928062B2 (en) 2002-10-29 2005-08-09 Qualcomm, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7295857B2 (en) 2002-10-30 2007-11-13 Qualcomm Incorporated Method and apparatus for performing acquisition in power save mode for wireless communication systems
US7236535B2 (en) 2002-11-19 2007-06-26 Qualcomm Incorporated Reduced complexity channel estimation for wireless communication systems
US7564818B2 (en) 2002-11-26 2009-07-21 Qualcomm Incorporated Reverse link automatic repeat request
DE10258860A1 (de) 2002-12-17 2004-07-15 Robert Bosch Gmbh Magnetoresistives Schichtsystem und Sensorelement mit diesem Schichtsystem
US7719991B2 (en) 2003-01-21 2010-05-18 Qualcomm Incorporated Reverse rate indicator detection
US7995684B2 (en) 2003-02-01 2011-08-09 Qualcomm, Incorporated Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver
US7450943B2 (en) 2003-02-12 2008-11-11 Qualcomm Incorporated Method and apparatus for determining coverage and switching between overlay communication systems
US7095790B2 (en) 2003-02-25 2006-08-22 Qualcomm, Incorporated Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
US7369549B2 (en) 2003-03-25 2008-05-06 Qualcomm Incorporated Adaptive rate prioritizing
US7069037B2 (en) 2003-04-11 2006-06-27 Qualcomm, Inc. System and method for fluid power control of a reverse link communication
US7646802B2 (en) 2003-06-02 2010-01-12 Qualcomm Incorporated Communication receiver with hybrid equalizer
US7376209B2 (en) 2003-06-06 2008-05-20 Qualcomm Incorporated Method and apparatus for near-optimal scaling of log-likelihood ratio (LLR) computation in turbo decoding for hybrid automatic repeat request (ARQ)
US7525909B2 (en) 2003-06-19 2009-04-28 Qualcomm Incorporated Method and apparatus for dynamic adjustment of rise-over-thermal (ROT) threshold for reverse link rate allocation
US7065144B2 (en) 2003-08-27 2006-06-20 Qualcomm Incorporated Frequency-independent spatial processing for wideband MISO and MIMO systems
US8908496B2 (en) 2003-09-09 2014-12-09 Qualcomm Incorporated Incremental redundancy transmission in a MIMO communication system
US7668125B2 (en) 2003-09-09 2010-02-23 Qualcomm Incorporated Incremental redundancy transmission for multiple parallel channels in a MIMO communication system
US6917821B2 (en) 2003-09-23 2005-07-12 Qualcomm, Incorporated Successive interference cancellation receiver processing with selection diversity
US7508748B2 (en) 2003-10-24 2009-03-24 Qualcomm Incorporated Rate selection for a multi-carrier MIMO system
US7145940B2 (en) 2003-12-05 2006-12-05 Qualcomm Incorporated Pilot transmission schemes for a multi-antenna system
US7411930B2 (en) 2003-12-17 2008-08-12 Qualcomm, Incorporated Apparatus and method for prioritized apportionment of transmission power in a multi-carrier terminal
US8391413B2 (en) 2003-12-19 2013-03-05 Qualcomm Incorporated Channel estimation for an OFDM communication system with inactive subbands
WO2005071867A2 (en) 2004-01-20 2005-08-04 Qualcomm Incorporated Synchronized broadcast/multicast communication
US8077691B2 (en) 2004-03-05 2011-12-13 Qualcomm Incorporated Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
US8331377B2 (en) 2004-05-05 2012-12-11 Qualcomm Incorporated Distributed forward link schedulers for multi-carrier communication systems
MXPA06012747A (es) 2004-05-05 2007-02-19 Qualcomm Inc Metodo y aparato para gestion de restraso adaptivo en un sistema de comunicacion inalambrica.
US7149264B2 (en) 2004-06-14 2006-12-12 Qualcomm, Incorporated CDMA pilot assisted channel estimation
US8457152B2 (en) 2004-07-16 2013-06-04 Qualcomm Incorporated Multiple modulation schemes in single rate layering wireless communication systems
US8111663B2 (en) 2004-07-20 2012-02-07 Qualcomm Incorporated Methods and systems for variable rate broadcast with soft handoff
US7940663B2 (en) 2004-07-20 2011-05-10 Qualcomm Incorporated Mitigating ACK/NACK errors in MIMO/SIC/HARQ
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US7567621B2 (en) 2004-07-21 2009-07-28 Qualcomm Incorporated Capacity based rank prediction for MIMO design
US7418046B2 (en) 2004-07-22 2008-08-26 Qualcomm Inc. Pilot transmission and channel estimation for multiple transmitters
CN101873266B (zh) 2004-08-30 2015-11-25 高通股份有限公司 用于语音ip传输的自适应去抖动缓冲器
US7672383B2 (en) 2004-09-17 2010-03-02 Qualcomm Incorporated Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
US8085678B2 (en) 2004-10-13 2011-12-27 Qualcomm Incorporated Media (voice) playback (de-jitter) buffer adjustments based on air interface
US7974359B2 (en) 2004-12-22 2011-07-05 Qualcomm Incorporated Methods and apparatus for mitigating multi-antenna correlation effect in communication systems
US7382744B2 (en) 2005-01-27 2008-06-03 Qualcomm Incorporated Systems and methods for optimizing the allocation of resources to serve different types of data flows in a wireless communication system
US8102872B2 (en) 2005-02-01 2012-01-24 Qualcomm Incorporated Method for discontinuous transmission and accurate reproduction of background noise information
US20070066232A1 (en) 2005-09-22 2007-03-22 Black Peter J Pilot grouping and route protocols in multi-carrier communication systems
US7848298B2 (en) 2005-03-08 2010-12-07 Qualcomm Incorporated De-coupling forward and reverse link assignment for multi-carrier wireless 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
US20060203794A1 (en) 2005-03-10 2006-09-14 Qualcomm Incorporated Systems and methods for beamforming in 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
US7725799B2 (en) 2005-03-31 2010-05-25 Qualcomm Incorporated Power savings in hierarchically coded modulation
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US8868118B2 (en) 2005-04-08 2014-10-21 Qualcomm Incorporated Multiplexing on the reverse link feedbacks for multiple forward link frequencies
US7570453B2 (en) 2005-12-07 2009-08-04 Samsung Electronics Co., Ltd. Method and apparatus reducing data damage from mechanical shock in a hard disk drive
US7609773B2 (en) 2005-04-18 2009-10-27 Qualcomm Incorporated Method of determining the location of the FFT window and the delay spread for the platinum broadcast channel estimator
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
US7564775B2 (en) 2005-04-29 2009-07-21 Qualcomm, Incorporated Timing control in orthogonal frequency division multiplex systems based on effective signal-to-noise ratio
US8842693B2 (en) 2005-05-31 2014-09-23 Qualcomm Incorporated Rank step-down for MIMO SCW design employing HARQ
US8971461B2 (en) 2005-06-01 2015-03-03 Qualcomm Incorporated CQI and rank prediction for list sphere decoding and ML MIMO receivers
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US7428269B2 (en) 2005-06-01 2008-09-23 Qualcomm Incorporated CQI and rank prediction for list sphere decoding and ML MIMO receivers
US20070071147A1 (en) 2005-06-16 2007-03-29 Hemanth Sampath Pseudo eigen-beamforming with dynamic beam selection
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8160596B2 (en) 2005-07-20 2012-04-17 Qualcomm Incorporated Asymmetric mode of operation in multi-carrier communication systems
US8493942B2 (en) 2005-08-01 2013-07-23 Qualcomm Incorporated Interference cancellation in wireless communication
US8385923B2 (en) 2005-08-16 2013-02-26 Qualcomm Incorporated Methods and systems for adaptive server selection in wireless communications
US8743909B2 (en) 2008-02-20 2014-06-03 Qualcomm Incorporated Frame termination
US8630602B2 (en) 2005-08-22 2014-01-14 Qualcomm Incorporated Pilot interference cancellation
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US8077654B2 (en) 2005-08-22 2011-12-13 Qualcomm Incorporated Auxiliary FL MIMO pilot transmission in 1XEV-DO
US8611305B2 (en) 2005-08-22 2013-12-17 Qualcomm Incorporated Interference cancellation for wireless communications
US8594252B2 (en) 2005-08-22 2013-11-26 Qualcomm Incorporated Interference cancellation for wireless communications
US9071344B2 (en) 2005-08-22 2015-06-30 Qualcomm Incorporated Reverse link interference cancellation
US8073068B2 (en) 2005-08-22 2011-12-06 Qualcomm Incorporated Selective virtual antenna transmission
US8094595B2 (en) 2005-08-26 2012-01-10 Qualcomm Incorporated Method and apparatus for packet communications in wireless systems
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US8139672B2 (en) 2005-09-23 2012-03-20 Qualcomm Incorporated Method and apparatus for pilot communication in a multi-antenna wireless communication system
US8472877B2 (en) 2005-10-24 2013-06-25 Qualcomm Incorporated Iterative interference cancellation system and method
US7948959B2 (en) 2005-10-27 2011-05-24 Qualcomm Incorporated Linear precoding for time division duplex system
RU2527748C2 (ru) 2005-10-27 2014-09-10 Квэлкомм Инкорпорейтед Предварительное кодирование для зависящего от сегмента планирования в беспроводных системах связи
US20070165738A1 (en) 2005-10-27 2007-07-19 Barriac Gwendolyn D Method and apparatus for pre-coding for a mimo system
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
KR101097021B1 (ko) 2005-10-27 2011-12-20 콸콤 인코포레이티드 무선 통신 시스템에서 역방향 링크 로딩을 추정하기 위한 방법 및 장치
US8385433B2 (en) 2005-10-27 2013-02-26 Qualcomm Incorporated Linear precoding for spatially correlated channels
US8760994B2 (en) 2005-10-28 2014-06-24 Qualcomm Incorporated Unitary precoding based on randomized FFT matrices
US7924753B2 (en) 2005-11-15 2011-04-12 Qualcomm Incorporated Method and system for decoding
US7881412B2 (en) 2005-11-21 2011-02-01 Qualcomm Incorporated Quasi-linear interference cancellation for wireless communication
US8385388B2 (en) 2005-12-06 2013-02-26 Qualcomm Incorporated Method and system for signal reconstruction from spatially and temporally correlated received samples
US8107517B2 (en) 2005-12-09 2012-01-31 Qualcomm Incorporated Average-tap energy based thresholding for channel estimation in multi antenna systems
US7729714B2 (en) 2005-12-20 2010-06-01 Qualcomm Incorporated Method and apparatus for reverse link transmit beam-forming
US7893873B2 (en) 2005-12-20 2011-02-22 Qualcomm Incorporated Methods and systems for providing enhanced position location in wireless communications
KR101026976B1 (ko) 2006-02-21 2011-04-11 퀄컴 인코포레이티드 다중-입력 다중-출력 통신 시스템에 대한 피드백 채널 설계
US9461736B2 (en) 2006-02-21 2016-10-04 Qualcomm Incorporated Method and apparatus for sub-slot packets in wireless communication
CN102970739A (zh) 2006-06-13 2013-03-13 高通股份有限公司 无线通信系统的功率控制
CN101467413B (zh) 2006-06-13 2013-08-21 高通股份有限公司 用于在无线通信系统中发送和接收导频的方法和装置
CN101473585B (zh) 2006-06-13 2013-07-10 高通股份有限公司 用于无线通信系统的反向链路导频传输
US8295371B2 (en) 2006-07-14 2012-10-23 Qualcomm Incorporated Multi-carrier receiver for wireless communication
US20080025241A1 (en) 2006-07-28 2008-01-31 Naga Bhushan Method and apparatus for broadcast multicast service in an ultra mobile broadband network
US8014331B2 (en) 2006-07-28 2011-09-06 Qualcomm Incorporated Method and apparatus for using a MAC protocol for broadcast
US8229423B2 (en) 2006-08-22 2012-07-24 Qualcomm Incorporated Broadcast and multicast services in wireless communication systems
US7903615B2 (en) 2006-10-10 2011-03-08 Qualcomm Incorporated Space division multiple access channelization in wireless communication systems
US8391196B2 (en) 2006-10-26 2013-03-05 Qualcomm Incorporated Dynamic power amplifier backoff using headroom information
US8885744B2 (en) 2006-11-10 2014-11-11 Qualcomm Incorporated Providing antenna diversity in a wireless communication system
US8611303B2 (en) 2007-02-02 2013-12-17 Qualcomm Incorporated Seamless context switching for radio link protocol
US9119026B2 (en) 2007-05-18 2015-08-25 Qualcomm Incorporated Enhanced pilot signal
US8412227B2 (en) 2007-05-18 2013-04-02 Qualcomm Incorporated Positioning using enhanced pilot signal
US8909279B2 (en) 2007-08-10 2014-12-09 Qualcomm Incorporated Adaptation of transmit power for neighboring nodes
US20090080499A1 (en) 2007-09-21 2009-03-26 Qualcomm Incorporated Interference management employing fractional code reuse
US9137806B2 (en) 2007-09-21 2015-09-15 Qualcomm Incorporated Interference management employing fractional time reuse
US9374791B2 (en) 2007-09-21 2016-06-21 Qualcomm Incorporated Interference management utilizing power and attenuation profiles
US9078269B2 (en) 2007-09-21 2015-07-07 Qualcomm Incorporated Interference management utilizing HARQ interlaces
US9066306B2 (en) 2007-09-21 2015-06-23 Qualcomm Incorporated Interference management utilizing power control
US8824979B2 (en) 2007-09-21 2014-09-02 Qualcomm Incorporated Interference management employing fractional frequency reuse
US20090135754A1 (en) 2007-11-27 2009-05-28 Qualcomm Incorporated Interference management in a wireless communication system using overhead channel power control
US8948095B2 (en) 2007-11-27 2015-02-03 Qualcomm Incorporated Interference management in a wireless communication system using frequency selective transmission
US8042086B2 (en) 2007-12-21 2011-10-18 Oracle America, Inc. Method and apparatus for verifying integrated circuit design using a constrained random test bench
US8483223B2 (en) 2008-02-01 2013-07-09 Qualcomm Incorporated Packet transmission via multiple links in a wireless communication system
US8331892B2 (en) 2008-03-29 2012-12-11 Qualcomm Incorporated Method and system for DC compensation and AGC
US8385465B2 (en) 2008-03-29 2013-02-26 Qualcomm Incorporated Transmitter chain timing and transmit power control
US8451740B2 (en) 2008-04-01 2013-05-28 Qualcomm Incorporated Compensating for drifts occurring during sleep times in access terminals
US20090271686A1 (en) 2008-04-28 2009-10-29 Qualcomm Incorporated Communication signal decoding with iterative cooperation between turbo and reed-solomon decoding
US8982832B2 (en) 2008-04-28 2015-03-17 Qualcomm Incorporated Wireless communication of turbo coded data with time diversity
US8583137B2 (en) 2008-05-16 2013-11-12 Qualcomm Incorporated Dynamic coverage adjustment in a multi-carrier communication system
US8605801B2 (en) 2008-05-20 2013-12-10 Qualcomm Incorporated Pilot signal set management in a multi-carrier communication system
US8995417B2 (en) 2008-06-09 2015-03-31 Qualcomm Incorporated Increasing capacity in wireless communication
US8375261B2 (en) 2008-07-07 2013-02-12 Qualcomm Incorporated System and method of puncturing pulses in a receiver or transmitter
US8203961B2 (en) 2008-08-11 2012-06-19 Qualcomm Incorporated Methods and apparatus for providing modified timestamps in a communication system
US8331310B2 (en) 2008-08-22 2012-12-11 Qualcomm Incorporated Systems and methods employing multiple input multiple output (MIMO) techniques
US20100067422A1 (en) 2008-09-12 2010-03-18 Qualcomm Incorporated Apparatus and methods for controlling a sleep mode in a wireless device
US8576760B2 (en) 2008-09-12 2013-11-05 Qualcomm Incorporated Apparatus and methods for controlling an idle mode in a wireless device
US8971884B2 (en) 2008-09-30 2015-03-03 At&T Mobility Ii Llc Rejection notification to a universal integrated circuit card
US8611325B2 (en) 2008-10-01 2013-12-17 Qualcomm Incorporated Method and apparatus for plug-and-play venue-cast co-channel with wide-area network
US8654705B2 (en) 2008-10-24 2014-02-18 Qualcomm Incorporated System and method for supporting multiple reverse link data streams
US8175594B2 (en) 2008-10-24 2012-05-08 Qualcomm Incorporated Active set management with hotspot carriers
US8654715B2 (en) 2008-10-24 2014-02-18 Qualcomm Incorporated Systems and methods providing mobile transmit diversity
US8923125B2 (en) 2008-10-24 2014-12-30 Qualcomm Incorporated Wireless network resource adaptation
US8250428B2 (en) 2008-11-22 2012-08-21 Qualcomm Incorporated Scheduling data with time diversity in flow systems
US8634438B2 (en) 2008-12-01 2014-01-21 Qualcomm Incorporated Wireless communication systems with femto nodes
US10812937B2 (en) 2008-12-11 2020-10-20 Qualcomm Incorporated Method and apparatus for obtaining contextually relevant content
US8854944B2 (en) 2009-01-17 2014-10-07 Qualcomm Incorporated Methods and apparatus for interference cancellation
US8494593B2 (en) 2009-01-23 2013-07-23 Qualcomm Incorporated Method and system for wireless coverage redundancy
US20100232338A1 (en) 2009-03-13 2010-09-16 Qualcomm Incorporated Apparatus and method for providing venuecast services on a next generation forward link only (flo) network
US20100251069A1 (en) 2009-03-31 2010-09-30 Qualcomm Incorporated Method and apparatus for efficient memory allocation for turbo decoder input with long turbo codeword
US8358969B2 (en) 2009-05-11 2013-01-22 Qualcomm Incorporated Feedback delay control in an echo cancellation repeater
US8306096B2 (en) 2009-06-26 2012-11-06 Qualcomm Incorporated Interference reduction using variable digital-to-analog converter (DAC) sampling rates
US8503360B2 (en) 2009-06-26 2013-08-06 Qualcomm Incorporated Method and apparatus for facilitating multi-user joint transmit-receive beamforming
US9161232B2 (en) 2009-06-29 2015-10-13 Qualcomm Incorporated Decentralized coexistence manager for controlling operation of multiple radios
US9185718B2 (en) 2009-06-29 2015-11-10 Qualcomm Incorporated Centralized coexistence manager for controlling operation of multiple radios
US8351456B2 (en) 2009-06-29 2013-01-08 Qualcomm Incorporated Method and apparatus for radio filtering in a multi-radio device
US20110007688A1 (en) 2009-07-09 2011-01-13 Qualcomm Incorporated Method and apparatus for event prioritization and arbitration in a multi-radio device
US8605729B2 (en) 2009-07-09 2013-12-10 Qualcomm Incorporated Method and apparatus for OIS protection in a wireless communication system
US8886126B2 (en) 2009-07-09 2014-11-11 Qualcomm Incorporated Resolution algorithms for multi-radio coexistence
US20110007680A1 (en) 2009-07-09 2011-01-13 Qualcomm Incorporated Sleep mode design for coexistence manager
JPWO2011108429A1 (ja) * 2010-03-05 2013-06-27 日本電気株式会社 チャネル推定回路、チャネル推定方法および受信機
US9161233B2 (en) 2010-03-30 2015-10-13 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US8634435B2 (en) 2010-03-30 2014-01-21 Qualcomm Incorporation Short term policy creation and execution of policy executed between communication events of a radio access technology within a coexistence manager hardware/software implementation
US8825860B2 (en) 2010-03-30 2014-09-02 Qualcomm, Incorporated Method and apparatus to facilitate voice activity detection and coexistence manager decisions
US8848607B2 (en) 2010-03-30 2014-09-30 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US20120113906A1 (en) 2010-03-30 2012-05-10 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US20120077532A1 (en) 2010-03-30 2012-03-29 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US9282462B2 (en) 2010-03-31 2016-03-08 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US10911961B2 (en) 2010-03-31 2021-02-02 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US8724545B2 (en) 2010-03-31 2014-05-13 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US20110310858A1 (en) 2010-06-16 2011-12-22 Qualcomm Incorporated Beacon signaling method and apparatus
US9185720B2 (en) 2010-08-04 2015-11-10 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US8923208B2 (en) 2010-08-05 2014-12-30 Qualcomm Incorporated Multi-radio coexistence
US9277564B2 (en) 2010-08-05 2016-03-01 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US9113488B2 (en) 2010-08-13 2015-08-18 Qualcomm Incorporated Multi-radio coexistence of a broadband radio and a broadcast stream receiver that receives broadcast stream data
US20120213303A1 (en) 2010-08-17 2012-08-23 Qualcomm Incorporated Compatible subset generation to facilitate multi-radio coexistence
US8443255B2 (en) 2010-08-26 2013-05-14 Qualcomm Incorporated Parity check matrix optimization and selection for iterative decoding
US8605839B2 (en) 2010-09-21 2013-12-10 Qualcomm Incorporated System and method for reducing power consumption in a FLO-EV receiver
US8886239B2 (en) 2010-09-21 2014-11-11 Qualcomm Incorporated Buffer status report control for creating transmission gaps
US9398602B2 (en) 2010-09-22 2016-07-19 Qualcomm Incorporated Multi-radio coexistence
US20150139015A1 (en) 2010-09-22 2015-05-21 Qualcomm Incorporated LTE Band Avoidance for RF Coexistence Interference
US8897220B2 (en) 2010-09-22 2014-11-25 Qualcomm Incorporated Multi-radio coexistence
US8655400B2 (en) 2010-09-22 2014-02-18 Qualcomm Incorporated Reduced transmit power for wireless radio coexistence
US9451480B2 (en) 2010-09-28 2016-09-20 Qualcomm Incorporated Methods and apparatus for power management in a wireless communication system
US20120127870A1 (en) 2010-11-23 2012-05-24 Wanlun Zhao Method and Apparatus for Enabling an Enhanced Frequency Domain Equalizer
US20120127923A1 (en) 2010-11-23 2012-05-24 Wanlun Zhao Method and Apparatus for Enabling a Low Complexity Receiver
US8830934B2 (en) 2010-12-10 2014-09-09 Qualcomm Incorporated Configurable filter for multi-radio interference mitigation
US9578649B2 (en) 2011-01-20 2017-02-21 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence
US20120250806A1 (en) 2011-03-28 2012-10-04 Wei Zhang Non-parametric uplink interference cancellation
US8537875B2 (en) 2011-04-14 2013-09-17 Qualcomm Incorporated Methods and apparatus for adjusting forward link signal to interference and noise ratio estimates
US9144084B2 (en) 2011-06-13 2015-09-22 Qualcomm Incorporated Multi-radio coexistence
US8782112B2 (en) 2011-06-28 2014-07-15 Qualcomm Incorporated Methods and systems for optimal zero-forcing and MMSE frequency domain equalizers for complex and VSB signals
US9154179B2 (en) 2011-06-29 2015-10-06 Qualcomm Incorporated Receiver with bypass mode for improved sensitivity
US9059785B2 (en) 2011-07-07 2015-06-16 Qualcomm Incorporated Fast timing acquisition in cell search
US8879445B2 (en) 2011-10-26 2014-11-04 Qualcomm Incorporated Mitigating impact of power imbalance on remote data rate in wireless local area network
US20130229961A1 (en) 2011-11-02 2013-09-05 Qualcomm Incorporated Methods and devices for positioning an access terminal utilizing a highly detectable pilot
US9585156B2 (en) 2011-11-14 2017-02-28 Qualcomm Incorporated Supporting different LTE-TDD configurations in neighboring regions and/or adjacent carriers
US8897181B2 (en) 2011-12-15 2014-11-25 Qualcomm Incorporated Multi-radio coexistence
US9143957B2 (en) 2012-02-24 2015-09-22 Qualcomm Incorporated Mitigating cross-device interference
US9172402B2 (en) 2012-03-02 2015-10-27 Qualcomm Incorporated Multiple-input and multiple-output carrier aggregation receiver reuse architecture
US8897188B2 (en) 2012-03-19 2014-11-25 Qualcomm Incorporated Method and apparatus for discontinuous reception in user equipment for power savings
US8744018B2 (en) 2012-04-05 2014-06-03 Qualcomm Incorporated Early termination schemes for turbo decoding in a wireless communication system
CN104247540A (zh) 2012-04-18 2014-12-24 高通股份有限公司 多无线单元共存
US9867194B2 (en) 2012-06-12 2018-01-09 Qualcomm Incorporated Dynamic UE scheduling with shared antenna and carrier aggregation
US9253658B2 (en) 2012-08-01 2016-02-02 Qualcomm Incorporated Management of uncoordinated interference
US9007942B2 (en) 2012-08-02 2015-04-14 Qualcomm Incorporated Iterative covariance inversion based on linear receiver designs
US8839079B2 (en) 2012-08-20 2014-09-16 Qualcomm Incorporated Methods and apparatuses for saving power during transport block decoding in UMTS systems
US20140071894A1 (en) 2012-09-13 2014-03-13 Qualcomm Incorporated Variable block length and superposition coding for hybrid automatic repeat request
US20140112267A1 (en) 2012-10-19 2014-04-24 Qualcomm Incorporated Receive diversity control in td-scdma
US20140133319A1 (en) 2012-11-13 2014-05-15 Qualcom Incorporated Receive diversity control in td-scdma
WO2014071586A1 (en) 2012-11-08 2014-05-15 Qualcomm Incorporated Adaptive waiting time in multiple receive diversity control for td-scdma
US20140219117A1 (en) 2013-02-07 2014-08-07 Qualcomm Incorporated Apparatus and method for inter cell interference coordination
US20140219243A1 (en) 2013-02-07 2014-08-07 Qualcomm Incorporated Apparatus and methods of joint transmit power and resource management
US9204437B2 (en) 2013-02-27 2015-12-01 Qualcomm Incorporated Methods and apparatus for conditional offload of one or more log-likelihood ratios (LLRs) or decoded bits
US10182404B2 (en) 2013-03-06 2019-01-15 Qualcomm Incorporated Transmit power calibration for matching the coverage of different radio technologies on a common radio node
US20140273884A1 (en) 2013-03-13 2014-09-18 Qualcomm Incorporated Wlan diversity/mimo using shared antenna
US10979203B2 (en) 2013-09-04 2021-04-13 Qualcomm Incorporated Channel selection to reduce interference to a wireless local area network from a cellular network
US20150063151A1 (en) 2013-09-04 2015-03-05 Qualcomm Incorporated Opportunistic supplemental downlink in unlicensed spectrum
US10278177B2 (en) 2013-09-04 2019-04-30 Qualcomm Incorporated Opportunistic carrier aggregation framework for efficient LTE operation in unlicensed spectrum
US20150063150A1 (en) 2013-09-04 2015-03-05 Qualcomm Incorporated Measurement reporting in unlicensed spectrum
US20150085686A1 (en) 2013-09-26 2015-03-26 Qualcomm Incorporated Scheduling based on signal quality measurements
US10375711B2 (en) 2013-11-12 2019-08-06 Qualcomm Incorporated Methods for LTE channel selection in unlicensed bands
US20150163823A1 (en) 2013-12-11 2015-06-11 Qualcomm Incorporated Interference classification-based carrier sense adaptive transmission (csat) in unlicensed spectrum
US9924368B2 (en) 2013-12-11 2018-03-20 Qualcomm Incorporated Apparatus and methods for cellular communications over unused unlicenced spectrum
US10044438B2 (en) 2014-02-17 2018-08-07 Qualcomm, Incorporated Carrier sense adaptive transmission (CSAT) measurements in shared spectrum
US20150282077A1 (en) 2014-03-28 2015-10-01 Qualcomm Incorporated Optimizing resource usage based on channel conditions and power consumption
US9474075B2 (en) 2014-03-28 2016-10-18 Qualcomm Incorporated Operation mode adaptation based on hardware and channel condition constraints
US9750014B2 (en) 2014-04-22 2017-08-29 Qualcomm Incorporated Interlaced carrier sense adaptive transmission (CSAT) co-existence in shared spectrum
US20150319702A1 (en) 2014-05-02 2015-11-05 Qualcomm Incorporated Configuration of uplink open loop power control parameters
US20150350919A1 (en) 2014-05-27 2015-12-03 Qualcomm Incorporated Adaptation of enhanced inter-cell interference coordination configuration
US20160014619A1 (en) 2014-07-09 2016-01-14 Qualcomm Incorporated Multiple cell joint detection and interference cancellation
US11109376B2 (en) 2014-09-22 2021-08-31 Qualcomm Incorporated Structured channel rasters for unlicensed spectrum
US20160095039A1 (en) 2014-09-26 2016-03-31 Qualcomm Incorporated Transmission puncturing for co-existence on a shared communication medium
US20160095040A1 (en) 2014-09-26 2016-03-31 Qualcomm Incorporated Transmission power reduction for co-existence on a shared communication medium
US10033578B2 (en) 2014-10-27 2018-07-24 Qualcomm Incorporated Leveraging synchronization coordination of a mesh network for low-power devices
US10367621B2 (en) 2014-10-27 2019-07-30 Qualcomm Incorporated Fountain HARQ for reliable low latency communication
US9673948B2 (en) 2014-10-29 2017-06-06 Qualcomm Incorporated Hybrid pilot design for low latency communication
US10405278B2 (en) 2014-10-31 2019-09-03 Qualcomm Incorporated Low power scheduling
US20160128130A1 (en) 2014-10-31 2016-05-05 Qualcomm Incorporated Mixed-mode medium access control (mac) on a shared communication medium
US10027462B2 (en) 2014-10-31 2018-07-17 Qualcomm Incorporated Unified frame structure
US9985802B2 (en) 2014-10-31 2018-05-29 Qualcomm Incorporated Channel estimation enhancements
US9967070B2 (en) 2014-10-31 2018-05-08 Qualcomm Incorporated Pilot reconfiguration and retransmission in wireless networks
US20160128045A1 (en) 2014-10-31 2016-05-05 Qualcomm Incorporated Reliable transmission of information on control channels
US10291372B2 (en) 2014-11-03 2019-05-14 Qualcomm Incorporated Hybrid automatic repeat/request (HARQ) scheduling
US9936469B2 (en) 2014-11-03 2018-04-03 Qualcomm Incorporated User equipment-centric medium access control layer-based signaling between a base station and UE
US9936498B2 (en) 2014-11-04 2018-04-03 Qualcomm Incorporated High reliability low latency mission critical communication
WO2016074185A1 (en) 2014-11-13 2016-05-19 Qualcomm Incorporated Standalone carrier sense adaptive transmission (csat) in unlicensed spectrum
US9814040B2 (en) 2014-11-21 2017-11-07 Qualcomm Incorporated UL/DL waveform and numerology design for low latency communication
US10541791B2 (en) 2014-11-25 2020-01-21 Qualcomm Incorporated Techniques for reducing latency in a wireless communication system
US10484135B2 (en) 2014-12-15 2019-11-19 Qualcomm Incorporated Mitigation of bursty interference
US10038528B2 (en) 2014-12-19 2018-07-31 Qualcomm Incorporated Common reference signal design based on semi-uniform pilot spacing and orthogonal cover code
US10182426B2 (en) 2015-03-13 2019-01-15 Qualcomm Incorporated Scheduling of downlink transmissions based on exchanges of pre-scheduling and scheduling messages
US9955497B2 (en) 2015-03-13 2018-04-24 Qualcomm Incorporated Low latency uplink acknowledgement channel waveform design
US10333752B2 (en) 2015-03-13 2019-06-25 Qualcomm Incorporated Guard-band for scaled numerology multiplexing
US10009160B2 (en) 2015-03-13 2018-06-26 Qualcomm Incorporated System and method for low latency acknowledgements
US10263745B2 (en) 2015-03-14 2019-04-16 Qualcomm Incorporated Reciprocal channel sounding reference signal allocation and configuration
US20160270046A1 (en) 2015-03-14 2016-09-15 Qualcomm Incorporated Data-carried control signaling mode
US9980271B2 (en) 2015-03-14 2018-05-22 Qualcomm Incorporated Interference aware reciprocal channel sounding reference signal
US9847862B2 (en) 2015-03-14 2017-12-19 Qualcomm Incorporated Reciprocal channel sounding reference signal multiplexing
US10231259B2 (en) 2015-03-14 2019-03-12 Qualcomm Incorporated Control signaling supporting multi-priority scheduling
US10342012B2 (en) 2015-03-15 2019-07-02 Qualcomm Incorporated Self-contained time division duplex (TDD) subframe structure
US10075187B2 (en) 2015-03-15 2018-09-11 Qualcomm Incorporated MCS/PMI/RI selection and coding/interleaving mechanism for bursty interference and puncturing handling
US10595302B2 (en) 2015-03-15 2020-03-17 Qualcomm Incorporated Subframe structure with embedded control signaling
US9936519B2 (en) 2015-03-15 2018-04-03 Qualcomm Incorporated Self-contained time division duplex (TDD) subframe structure for wireless communications
US10547415B2 (en) 2015-03-15 2020-01-28 Qualcomm Incorporated Scalable TTI with advanced pilot and control
US10075970B2 (en) 2015-03-15 2018-09-11 Qualcomm Incorporated Mission critical data support in self-contained time division duplex (TDD) subframe structure
US10541780B2 (en) 2015-03-15 2020-01-21 Qualcomm Incorporated Code block level error correction and media access control (MAC) level hybrid automatic repeat requests to mitigate bursty puncturing and interference in a multi-layer protocol wireless system
US10123219B2 (en) 2015-03-16 2018-11-06 Qualcomm Incorporated Parameterized self-contained subframe structure having an interlaced portion followed by a tail portion
US9893800B2 (en) 2015-03-20 2018-02-13 Qualcomm Incorporated Method and apparatus for spectral efficient data transmission in satellite systems
US9900856B2 (en) 2015-03-20 2018-02-20 Qualcomm Incorporated Method and apparatus for time or frequency synchronization in non-geosynchronous satellite communication systems
US9730227B2 (en) 2015-03-20 2017-08-08 Qualcomm Incorporated Dynamic frequency allocation of satellite beams
US9954668B2 (en) 2015-03-23 2018-04-24 Qualcomm Incorporated Co-existence system synchronization on a shared communication medium
US11606782B2 (en) 2015-03-30 2023-03-14 Qualcomm Incorporated Event triggered multi-link channel quality measurement and report for mission critical applications
US11146328B2 (en) 2015-04-03 2021-10-12 Qualcomm Incorporated Method and apparatus for avoiding exceeding interference limits for a non-geostationary satellite system
US9955365B2 (en) 2015-04-15 2018-04-24 Qualcomm Incorporated Conditional progressive encoding and decoding
US9974093B2 (en) 2015-04-29 2018-05-15 Qualcomm Incorporated Slotted sub-band duplex frame structure design in a wideband time-division duplex system
US9894701B2 (en) 2015-05-04 2018-02-13 Qualcomm Incorporated Inter-node coordination for managing a modem processing pipeline
US10057019B2 (en) 2015-05-08 2018-08-21 Qualcomm Incorporated Media access control (MAC) layer coding and hybrid automatic repeat request (HARQ) for efficient receiver pipeline processing in self-contained time division duplex (TDD) subframe
US9814058B2 (en) 2015-05-15 2017-11-07 Qualcomm Incorporated Scaled symbols for a self-contained time division duplex (TDD) subframe structure
US10868650B2 (en) 2015-05-27 2020-12-15 Qualcomm Incorporated Pilot reconfiguration and retransmission in wireless networks
US20160353482A1 (en) 2015-05-27 2016-12-01 Qualcomm Incorporated Reservation coordination in a shared communication medium
US10104616B2 (en) 2015-06-22 2018-10-16 Qualcomm Incorporated Downlink multiplexing and MAC signaling for a system with devices operating with and without low power companion receivers
US10693574B2 (en) 2015-07-02 2020-06-23 Qualcomm Incorporated Method and apparatus for efficient data transmissions in half-duplex communication systems with large propagation delays
CN105072063B (zh) * 2015-07-10 2018-05-18 大唐移动通信设备有限公司 一种抑制干扰信号的方法和装置
US9992790B2 (en) 2015-07-20 2018-06-05 Qualcomm Incorporated Time division duplex (TDD) subframe structure supporting single and multiple interlace modes
US10805000B2 (en) 2015-07-23 2020-10-13 Qualcomm Incorporated Method and apparatus for discontinuous transmission in bent-pipe relay in satellite communication systems
US10505701B2 (en) 2015-08-07 2019-12-10 Qualcomm Incorporated Configurable bi-directional time division duplex (TDD) subframe structure
US9538537B1 (en) * 2015-08-11 2017-01-03 Phasorlab, Inc. Blind carrier synchronization method for OFDM wireless communication systems
US10291379B2 (en) 2015-08-12 2019-05-14 Qualcomm Incorporated Contention-based co-existence on a shared communication medium
US10201014B2 (en) 2015-08-12 2019-02-05 Qualcomm Incorporated Contention-based co-existence on a shared communication medium
US10091789B2 (en) 2015-08-19 2018-10-02 Qualcomm, Incorporated Re-contention-based co-existence on a shared communication medium
US10542541B2 (en) 2015-08-19 2020-01-21 Qualcomm, Incorporated Re-contention-based co-existence on a shared communication medium
US10219300B2 (en) 2015-08-19 2019-02-26 Qualcomm Incorporated Enhanced channel reservation for co-existence on a shared communication medium
US10356816B2 (en) 2015-08-19 2019-07-16 Qualcomm Incorporated Re-contention-based co-existence on a shared communication medium
US10299284B2 (en) 2015-08-31 2019-05-21 Qualcomm, Incorporated Inter-access terminal unblocking and enhanced contention for co-existence on a shared communication medium
US10334546B2 (en) 2015-08-31 2019-06-25 Qualcomm Incorporated Synchronization signaling coordination for co-existence on a shared communication medium
US10374777B2 (en) 2015-08-31 2019-08-06 Qualcomm Incorporated Control signaling in a shared communication medium
US10080214B2 (en) 2015-09-04 2018-09-18 Qualcomm Incorporated Signaling and decoding with cross-transmission time interval (TTI) or cross-carrier referencing
US9936400B2 (en) 2015-09-12 2018-04-03 Qualcomm Incorporated Channel selection in a shared communication medium
US9788361B2 (en) 2015-09-18 2017-10-10 Qualcomm Incorporated Setting transmission parameters in a shared communication medium
US10263754B2 (en) 2015-09-21 2019-04-16 Qualcomm Incorporated Wireless device architecture to support very-high-reliability (VHR) communication
US10257851B2 (en) 2015-09-24 2019-04-09 Qualcomm Incorporated Channel configuration for co-existence on a shared communication medium
US9525477B1 (en) 2015-09-24 2016-12-20 Qualcomm Incorporated Frequency tracking with sparse pilots
US10044459B2 (en) 2015-11-04 2018-08-07 Qualcomm Incorporated Uplink control signaling on a shared communication medium
US10292093B2 (en) 2015-11-10 2019-05-14 Qualcomm Incorporated Communicating subframe timing of an access point on a shared communication medium
US10784901B2 (en) 2015-11-12 2020-09-22 Qualcomm Incorporated Puncturing for structured low density parity check (LDPC) codes
US10476641B2 (en) 2015-11-17 2019-11-12 Qualcomm Incorporated Back-to-back reference signals
US10645679B2 (en) 2015-11-18 2020-05-05 Qualcomm Incorporated Hybrid automatic repeat request (HARQ) payload mapping for short physical uplink control channel (PUCCH) on a shared communication medium
US10368348B2 (en) 2015-11-18 2019-07-30 Qualcomm Incorporated Physical control channel signaling on a shared communication medium
US10524278B2 (en) 2015-11-20 2019-12-31 Qualcomm Incorporated Scheduling and token bucket for communication co-existence
US10009912B2 (en) 2015-11-20 2018-06-26 Qualcomm Incorporated Scheduling and token bucket for communication co-existence
US11277235B2 (en) 2015-11-23 2022-03-15 Qualcomm Incorporated Techniques for multiplexing or cascading control information and data within a transmission time interval
US10973018B2 (en) 2015-11-23 2021-04-06 Qualcomm Incorporated Wireless resource blocks with integrated control and data
US10447426B2 (en) 2015-12-04 2019-10-15 Qualcomm Incorporated Scheduling based on end-to-end delay bound
US9929812B2 (en) 2015-12-07 2018-03-27 Qualcomm Incorporated Techniques for channel estimation using user equipment specific reference signals based on smoothed precoders in a frequency domain
US10631323B2 (en) 2015-12-08 2020-04-21 Qualcomm Incorporated Delayed control feedback in a time division duplex carrier utilizing common bursts
US10237889B2 (en) 2015-12-09 2019-03-19 Qualcomm Incorporated Conditional uplink grant
US10038544B2 (en) 2015-12-09 2018-07-31 Qualcomm Incorporated Multiple access for users with different modes in a common uplink burst in a time division duplex subframe structure
US11924826B2 (en) 2015-12-10 2024-03-05 Qualcomm Incorporated Flexible transmission unit and acknowledgment feedback timeline for efficient low latency communication
US20170171855A1 (en) 2015-12-11 2017-06-15 Qualcomm Incorporated Network assistance for distributed unscheduled transmissions
US10461891B2 (en) 2015-12-18 2019-10-29 Qualcomm Incorporated Staggered pilot placement
US10225065B2 (en) 2015-12-18 2019-03-05 Qualcomm Incorporated Common control channel subband design and signaling
US10177826B2 (en) 2015-12-28 2019-01-08 Qualcomm Incorporated Transmission of channel state information based on selected non-frequency domain components of channel responses
US10368372B2 (en) 2016-01-12 2019-07-30 Qualcomm Incorporated Listen-before-talk techniques for uplink transmissions
US10219252B2 (en) 2016-01-15 2019-02-26 Qualcomm Incorporated Shortened control channel resource mapping
US11032031B2 (en) 2016-01-18 2021-06-08 Qualcomm Incorporated HARQ LLR buffer and reordering buffer management
US10492181B2 (en) 2016-01-20 2019-11-26 Qualcomm Incorporated Communication of uplink control information
US10484129B2 (en) 2016-01-21 2019-11-19 Qualcomm Incorporated Protocol layer packet coding for transmitter/receiver buffer optimization
US10356811B2 (en) 2016-01-28 2019-07-16 Qualcomm Incorporated Methods and apparatus for grant processing
US10404332B2 (en) 2016-01-28 2019-09-03 Qualcomm Incorporated Downlink common burst channelization
US11296837B2 (en) 2016-01-28 2022-04-05 Qualcomm Incorporated Physical broadcast channel (PBCH) transmission and reception on a shared communication medium
US10219235B2 (en) 2016-02-02 2019-02-26 Qualcomm Incorporated Timing synchronization coordination on a shared communication medium
US10498503B2 (en) 2016-02-10 2019-12-03 Qualcomm Incorporated Multi-cast resource allocation by aggregation level
US10721044B2 (en) 2016-03-15 2020-07-21 Qualcomm Incorporated Downlink control and retransmission indicator channel for relaxing ACK processing time constraints
US10122559B2 (en) 2016-03-21 2018-11-06 Qualcomm Incorporated Uplink channel quality measurement using a subframe with high-intensity reference signal bursts
US10554462B2 (en) 2016-03-23 2020-02-04 Qualcomm Incorporated Communication of broadcast reference signal
US9780889B1 (en) * 2016-03-25 2017-10-03 QUALCOMM Incorporaeted Techniques for RF transceiver self-calibration
US10368305B2 (en) 2016-03-25 2019-07-30 Qualcomm Incorporated Automatic network selection for multefire
US10411782B2 (en) 2016-03-31 2019-09-10 Qualcomm Incorporated Channel estimation for per-tone continuous precoding in downlink MIMO transmission
US10447447B2 (en) 2016-04-05 2019-10-15 Qualcomm Incorporated Methods and apparatus for multiplexing reference signals for multiple input multiple output (MIMO) layers
US10285189B2 (en) 2016-04-10 2019-05-07 Qualcomm Incorporated Fifth generation (5G) time division duplex (TDD) legacy coexistence design
US10314065B2 (en) 2016-04-12 2019-06-04 Qualcomm Incorporated Traffic multiplexing
US10631331B2 (en) 2016-04-22 2020-04-21 Qualcomm Incorporated Frame structure signaling for multefire
US10616912B2 (en) 2016-04-22 2020-04-07 Qualcomm Incorporated Uplink payload determination and uplink grant indication for multefire
US10349404B2 (en) 2016-04-22 2019-07-09 Qualcomm Incorporated Discovery reference signal transmission and decoding and measurement techniques in a wireless communication system
US10098059B2 (en) 2016-04-29 2018-10-09 Qualcomm Incorporated Discovering physical cell identifiers in wireless communications
US10791548B2 (en) 2016-05-02 2020-09-29 Qualcomm Incorporated Search space design for control channel in wireless communication
US10356800B2 (en) 2016-05-09 2019-07-16 Qualcomm Incorporated Scalable numerology with symbol boundary alignment for uniform and non-uniform symbol duration in wireless communication
US10624079B2 (en) 2016-05-11 2020-04-14 Qualcomm Incorporated Coexistence of narrow-band internet-of-things/enhanced machine type communication and 5G
US9825798B1 (en) 2016-05-11 2017-11-21 Qualcomm Incorporated Modulation order split transmissions using a uniform constellation
US10382233B2 (en) 2016-05-12 2019-08-13 Qualcomm Incorporated Heterogeneous weighted overlap-add windowing and filtering for orthogonal frequency division multiplexing waveforms
US10075194B2 (en) 2016-05-13 2018-09-11 Qualcomm Incorporated Tail biting convolutional code (TBCC) enhancement with state propagation and list decoding
US10200994B2 (en) 2016-05-20 2019-02-05 Qualcomm Incorporated Non-equal bit allocation for coexistence with scaled numerology systems
US10728080B2 (en) 2016-05-20 2020-07-28 Qualcomm Incorporated Polar codes and modulation mappings
US10390362B2 (en) 2016-06-06 2019-08-20 Qualcomm Incorporated Sidelink-centric subframe for wireless communication
US10645631B2 (en) 2016-06-09 2020-05-05 Qualcomm Incorporated Device detection in mixed static and mobile device networks
US10516618B2 (en) 2016-06-10 2019-12-24 Qualcomm Incorporated Preamble design on a shared communication medium
US10477526B2 (en) 2016-06-10 2019-11-12 Qualcomm Incorporated Uplink procedures on a shared communication medium
US20170359146A1 (en) 2016-06-13 2017-12-14 Qualcomm Incorporated Enhanced lva decoding using iterative comparison trellis construction
US10448380B2 (en) 2016-06-27 2019-10-15 Qualcomm Incorporated Split symbol control for aligned numerology
US20180019766A1 (en) 2016-07-14 2018-01-18 Qualcomm Incorporated Pipelining for polar code list decoding
US10775361B2 (en) 2016-07-22 2020-09-15 Qualcomm Incorporated Monitoring control channel with different encoding schemes
US20180026764A1 (en) 2016-07-25 2018-01-25 Qualcomm Incorporated Method of mapping transmission layers to frequency division multiplexed demodulation reference signal ports
US20180035455A1 (en) 2016-07-28 2018-02-01 Qualcomm Incorporated Techniques for adaptive transmissions during urllc
US10440729B2 (en) 2016-07-28 2019-10-08 Qualcomm Incorporated Transmission of Ultra-Reliable Low-Latency Communications (URLLC) over Time Division Duplex (TDD) using a URLLC configuration for a TDD subframe
US10425923B2 (en) 2016-08-01 2019-09-24 Qualcomm Incorporated Uplink channel multiplexing and waveform selection
US11363572B2 (en) 2016-08-01 2022-06-14 Qualcomm Incorporated Uplink channel dynamic waveform switching
US10631295B2 (en) 2016-08-02 2020-04-21 Qualcomm Incorporated Techniques for beacon-assisted multi-tier spectrum sharing
US10694527B2 (en) 2016-08-04 2020-06-23 Qualcomm Incorporated Co-existence of reliable low latency and other services in a wireless network
US10419171B2 (en) 2016-08-11 2019-09-17 Qualcomm Incorporated Flexible guard band for heterogeneous symbol lengths/subcarrier spacing
US10375718B2 (en) 2016-08-11 2019-08-06 Qualcomm Incorporated Adaptive resource management for robust communication in new radio
US10461889B2 (en) 2016-08-11 2019-10-29 Qualcomm Incorporated Interference aware transceiver design for heterogeneous numerology systems
US10660009B2 (en) 2016-08-12 2020-05-19 Qualcomm Incorporated Linkage and indication of HARQ packet transmissions and parameters for URLLC in NR
US10412632B2 (en) 2016-08-12 2019-09-10 Qualcomm Incorporated Adaptive numerology for URLLC
US10454541B2 (en) 2016-08-12 2019-10-22 Qualcomm Incorporated Dynamic uplink antenna port management
US10567118B2 (en) 2016-08-15 2020-02-18 Qualcomm Incorporated Coding to improve transmission and reception processing time
US10320428B2 (en) 2016-08-15 2019-06-11 Qualcomm Incorporated Outputting of codeword bits for transmission prior to loading all input bits
US10952142B2 (en) 2016-08-16 2021-03-16 Qualcomm Incorporated Energy-efficient paging in wireless networks
US10405242B2 (en) 2016-08-19 2019-09-03 Qualcomm Incorporated Robust channel reservation on a shared communication medium
US10135591B2 (en) 2016-08-19 2018-11-20 Qualcomm Incorporated Techniques for improving URLLC communications in new radio
US10476650B2 (en) 2016-08-19 2019-11-12 Qualcomm Incorporated Control channel with flexible numerology
US10476781B2 (en) 2016-08-22 2019-11-12 Qualcomm Incorporated Feedback for independent links
US10819482B2 (en) 2016-08-24 2020-10-27 Qualcomm Incorporated Sounding reference signal enhancements
US10270562B2 (en) 2016-08-31 2019-04-23 Qualcomm Incorporated Control transmission soft combining
US10582458B2 (en) 2016-09-01 2020-03-03 Qualcomm Incorporated Listen before talk design for spectrum sharing in new radio (NR)
US10542436B2 (en) 2016-09-02 2020-01-21 Qualcomm Incorporated Unlicensed spectrum operation for narrowband internet of things and enhanced machine type communication
US10218406B2 (en) 2016-09-02 2019-02-26 Qualcomm Incorporated Narrowband communication for different device capabilities in unlicensed spectrum
US10602515B2 (en) 2016-09-12 2020-03-24 Qualcomm Incorporated Guard band with synchronization information
US10595225B2 (en) 2016-09-13 2020-03-17 Qualcomm Incorporated Phase-noise compensation reference signal configuration reporting and signaling
US10484878B2 (en) 2016-09-16 2019-11-19 Qualcomm Incorporated Mixed-access mode communication for standalone operation on a shared communication medium
US20180083824A1 (en) 2016-09-22 2018-03-22 Qualcomm Incorporated Nested constellation techniques for payload-tapering, embedded control, or reference signal transmissions
US11595948B2 (en) 2016-09-23 2023-02-28 Qualcomm Incorporated Resource allocation patterns for scheduling services in a wireless network
US10687252B2 (en) 2016-09-28 2020-06-16 Qualcomm Incorporated Bandwidth group (BWG) for enhanced channel and interference mitigation in 5G new radio
US10367672B2 (en) * 2016-09-28 2019-07-30 Qualcomm Incorporated Enhancements to phase-noise compensation reference signal design and scrambling
US10715392B2 (en) 2016-09-29 2020-07-14 Qualcomm Incorporated Adaptive scalable numerology for high speed train scenarios
US10644737B2 (en) 2016-09-30 2020-05-05 Qualcomm Incorporated Adaptive cyclic-shift based multiplexing
US10595332B2 (en) 2016-09-30 2020-03-17 Qualcomm Incorporated Aligning slots allocated to extended cyclic prefix symbols with slots allocated to normal cyclic prefix symbols
US10939419B2 (en) 2016-09-30 2021-03-02 Qualcomm Incorporated Uplink control information
US10419244B2 (en) 2016-09-30 2019-09-17 Qualcomm Incorporated Demodulation reference signal management in new radio
US10159097B2 (en) 2016-09-30 2018-12-18 Qualcomm Incorporated Signaling and determination of slot and mini-slot structure
US10785736B2 (en) 2016-10-03 2020-09-22 Qualcomm Incorporated System and method that facilitates a coexistence of fifth generation new radio resource technology with narrowband internet-of-things technology
US11825482B2 (en) 2016-10-03 2023-11-21 Qualcomm Incorporated Techniques for improved control channels
US10257848B2 (en) 2016-10-04 2019-04-09 Qualcomm Incorporated Directional channel reservation for time-division multiplexing downlink and uplink data burst transmission
US10869325B2 (en) 2016-10-07 2020-12-15 Qualcomm Incorporated Dynamic hybrid automatic repeat request timing management
US9979450B2 (en) 2016-10-07 2018-05-22 Qualcomm Incorporated Adaptive codeword and codeblock selection in wireless communications
US10524257B2 (en) 2016-10-09 2019-12-31 Qualcomm Incorporated TTI bundling for URLLC UL/DL transmissions
US11172444B2 (en) 2016-10-10 2021-11-09 Qualcomm Incorporated Techniques for power control and management
US10404340B2 (en) 2016-10-11 2019-09-03 Qualcomm Incorporated Dynamic adjustment of transmission properties with continuous precoding
US10425945B2 (en) 2016-10-11 2019-09-24 Qualcomm Incorporated Multi-stage channel reservation signal for directional transmission and reception
US11160071B2 (en) 2016-10-18 2021-10-26 Qualcomm Incorporated Carrier aggregation with self-contained subframe for efficient modem processing
US20180109406A1 (en) 2016-10-19 2018-04-19 Qualcomm Incorporated Resource block alignment in mixed numerology wireless communications
US10484972B2 (en) 2016-10-21 2019-11-19 Qualcomm Incorporated Puncture recovery and resource reclaiming for multi-priority scheduling
US10412719B2 (en) 2016-10-21 2019-09-10 Qualcomm Incorporated Service type based control search space monitoring
US10355803B2 (en) 2016-10-24 2019-07-16 Qualcomm Incorporated Multiplexing reference signals with scalable numerology for new radio (NR) networks
US10448296B2 (en) 2016-10-24 2019-10-15 Qualcomm Incorporated Coding of handover messages between nodes of different radio access technologies
US10547402B2 (en) 2016-10-24 2020-01-28 Qualcomm Incorporated Hybrid multiplexing for mission critical information
US10547494B2 (en) 2016-10-31 2020-01-28 Qualcomm Incorporated Unlicensed spectrum coverage enhancement for industrial internet of things
US10652889B2 (en) 2016-11-02 2020-05-12 Qualcomm Incorporated Wireless communication between wideband ENB and narrowband UE
US10506629B2 (en) 2016-11-02 2019-12-10 Qualcomm Incorporated Beam refinement reference signal enhancement for higher mobility support
US10757690B2 (en) 2016-11-03 2020-08-25 Qualcomm Incorporated Control information piggyback in shared channel
US10469203B2 (en) 2016-11-04 2019-11-05 Qualcomm Incorporated On-demand time-interleaving
US20180132223A1 (en) 2016-11-04 2018-05-10 Qualcomm Incorporated Techniques for configuring reference signal patterns in wireless communications
US10104624B2 (en) 2016-11-04 2018-10-16 Qualcomm Incorporated Techniques for adjusting transmit power in wireless communications
CN109923841B (zh) * 2016-11-04 2021-01-12 华为技术有限公司 一种参考信号配置方法、训练字段配置方法及装置
US10091810B2 (en) 2016-11-04 2018-10-02 Qualcomm Incorporated Network configured uplink control feedback for 5G new radio (NR)
US10334594B2 (en) 2016-11-04 2019-06-25 Qualcomm Incorporated Ultra-reliable low-latency communication mini-slot control
US10327241B2 (en) 2016-11-07 2019-06-18 Qualcomm Incorporated Solving deafness in directional clear channel assessment (CCA)
US10461976B2 (en) 2016-11-11 2019-10-29 Qualcomm Incorporated Cyclic prefix management in new radio
US10959233B2 (en) 2016-11-13 2021-03-23 Qualcomm Incorporated Method to enable iterative processing and perform closer to constrained capacity
US10548020B2 (en) 2016-11-14 2020-01-28 Qualcomm Incorporated Techniques for selectively adjusting wireless communication parameters based on aggregated interference from listen-before-talk wireless devices
US10645590B2 (en) 2016-11-16 2020-05-05 Qualcomm Incorporated Self-contained transmissions for machine type communications
US10084563B2 (en) 2016-11-18 2018-09-25 Qualcomm Incorporated Asymmetric heterogeneous waveform shaping in wireless communications
US10362574B2 (en) 2016-11-18 2019-07-23 Qualcomm Incorporated Uplink resource allocation techniques for shared radio frequency spectrum
US10638444B2 (en) 2016-12-01 2020-04-28 Qualcomm Incorporated Positioning techniques for wireless communications devices using shared radio frequency spectrum
US10674389B2 (en) 2016-12-01 2020-06-02 Qualcomm Incorporated Access terminal radio link monitoring (RLM) on a shared communication medium
US10856185B2 (en) 2016-12-09 2020-12-01 Qualcomm Incorporated Channel reservation signals for new radio interference management
US10536966B2 (en) 2016-12-09 2020-01-14 Qualcomm Incorporated Physical downlink control channel and hybrid automatic repeat request feedback for multefire coverage enhancement
WO2018107068A1 (en) 2016-12-09 2018-06-14 Qualcomm Incorporated Uplink transmit diversity and precoding
US10396962B2 (en) 2016-12-15 2019-08-27 Qualcomm Incorporated System and method for self-contained subslot bundling
US10681708B2 (en) 2016-12-16 2020-06-09 Qualcomm Incorporated Subslot bundling and acknowledgement
US10581572B2 (en) 2016-12-16 2020-03-03 Qualcomm Incorporated Autonomous uplink transmissions on a shared communication medium
US10779320B2 (en) 2016-12-16 2020-09-15 Qualcomm Incorporated Channel reservation signal with new radio PDCCH waveform
US10708007B2 (en) 2017-01-05 2020-07-07 Qualcomm Incorporated Methods and apparatuses for indication of transmission preemption based on a hybrid automatic repeat request configuration
US10616914B2 (en) 2017-01-06 2020-04-07 Qualcomm Incorporated Unicast data transmission on a downlink common burst of a slot using mini-slots
WO2018126433A1 (en) 2017-01-06 2018-07-12 Qualcomm Incorporated Techniques for hybrid chase combining and incremental redundancy harq with polar codes
WO2018152694A1 (en) 2017-02-22 2018-08-30 Qualcomm Incorporated Mutual-information based recursive polar code construction
CN110192363B (zh) 2017-01-09 2022-01-14 高通股份有限公司 基于golay的块码来编码和解码的方法、设备和介质
WO2018126496A1 (en) 2017-01-09 2018-07-12 Qualcomm Incorporated Bit allocation for encoding and decoding
WO2018126476A1 (en) 2017-01-09 2018-07-12 Qualcomm Incorporated Rate-matching scheme for control channels using polar codes
US10523369B2 (en) 2017-01-09 2019-12-31 Qualcomm Incorporated Mutual-information based recursive polar code construction
US20180198560A1 (en) 2017-01-09 2018-07-12 Qualcomm Incorporated Generalized polar code based on polarization of linear block codes and convolutional codes
WO2018129695A1 (en) 2017-01-12 2018-07-19 Qualcomm Incorporated Puncturing and repetition for data encoding
WO2018129734A1 (en) 2017-01-16 2018-07-19 Qualcomm Incorporated Dynamic frozen polar codes
US10257844B2 (en) 2017-01-17 2019-04-09 Qualcomm Incorporated Beam-combining scheme with broadcast beam-sweeping and beam-index indication
US10608785B2 (en) 2017-01-19 2020-03-31 Qualcomm Incorporated Resource-based code block segmentation
US10440657B2 (en) 2017-01-26 2019-10-08 Qualcomm Incorporated Configuring different uplink power control for long and short uplink bursts
US10327261B2 (en) 2017-01-26 2019-06-18 Qualcomm Incorporated Directional listen before talk scheme
US11096181B2 (en) 2017-01-30 2021-08-17 Qualcomm Incorporated Monitoring interference level to selectively control usage of a contention-based protocol
US11310695B2 (en) 2017-02-03 2022-04-19 Qualcomm Incorporated Multi-subframe discovery reference signaling (DRS) measurement timing configuration (DMTC) window
US11057926B2 (en) 2017-02-04 2021-07-06 Qualcomm Incorporated Physical uplink shared channel coverage enhancements
US10659102B2 (en) 2017-02-04 2020-05-19 Qualcomm Incorporated Synchronization techniques using frequency hopping in unlicensed radio frequency spectrum
US10772113B2 (en) 2017-02-06 2020-09-08 Qualcomm Incorporated Autonomous uplink transmission techniques using shared radio frequency spectrum
US11032718B2 (en) 2017-02-06 2021-06-08 Qualcomm Incorporated Optimizing millimeter wave beam searching
US10097260B2 (en) 2017-02-06 2018-10-09 Qualcomm Incorporated Current indication channel for eMBB/URLLC multiplexing
WO2018145242A1 (en) 2017-02-07 2018-08-16 Qualcomm Incorporated A low complexity puncturing method for low-rate polar codes
US10856288B2 (en) 2017-02-10 2020-12-01 Qualcomm Incorporated Multi-level slot bundling design
US10348329B2 (en) 2017-02-13 2019-07-09 Qualcomm Incorporated Low density parity check (LDPC) circular buffer rate matching
US11190975B2 (en) 2017-02-13 2021-11-30 Qualcomm Incorporated Feedback techniques for wireless communications
US10667173B2 (en) 2017-02-13 2020-05-26 Qualcomm Incorporated Feedback retransmission repetition coding for wireless communications
US10425824B2 (en) 2017-02-13 2019-09-24 Qualcomm Incorporated Hybrid indication scheme for enhanced mobile broadband and low latency communication multiplexing
US10757718B2 (en) 2017-02-16 2020-08-25 Qualcomm Incorporated Post-puncture indication for mobile broadband and low latency communication multiplexing
US10412733B2 (en) 2017-02-17 2019-09-10 Qualcomm Incorporated Feedback-based retransmission using mixed-duration transmission time intervals
WO2018148963A1 (en) 2017-02-20 2018-08-23 Qualcomm Incorporated Polarization weight calculation for punctured polar code
US10405262B2 (en) 2017-02-21 2019-09-03 Qualcomm Incorporated Techniques for signaling a public land mobile network identifier over a shared radio frequency spectrum band
US10667288B2 (en) 2017-02-21 2020-05-26 Qualcomm Incorporated Techniques for configuring or transmitting grantless transmissions on beams in uplink subframes
US10368301B2 (en) 2017-02-21 2019-07-30 Qualcomm Incorporated Multi-beam and single-beam discovery reference signals for shared spectrum
US10404434B2 (en) 2017-02-21 2019-09-03 Qualcomm Incorporated Discovery and random access for shared spectrum
US10700802B2 (en) 2017-02-21 2020-06-30 Qualcomm Incorporated Variable length reference signaling for fast acquisition in shared spectrum
US10225818B2 (en) 2017-02-22 2019-03-05 Qualcomm Incorporated Paging user equipments on a shared communication medium
US10681723B2 (en) 2017-02-27 2020-06-09 Qualcomm Incorporated Technique for HARQ, multiplexing, and contention
US20180249486A1 (en) 2017-02-27 2018-08-30 Qualcomm Incorporated Indication channel techniques for low latency wireless communications
US10477437B2 (en) 2017-02-27 2019-11-12 Qualcomm Incorporated Node-specific medium reservation for spectrum sharing
US10405335B2 (en) 2017-03-01 2019-09-03 Qualcomm Incorporated Soft channel reservation
US10638517B2 (en) 2017-03-06 2020-04-28 Qualcomm Incorporated Channel reservation signal design for shared spectrum
US10298434B2 (en) 2017-03-09 2019-05-21 Qualcomm Incorporated Compressed modulation feedback in codeword transmission with per-layer-modulation mapping
US10200140B2 (en) 2017-03-09 2019-02-05 Qualcomm Incorporated Techniques and apparatuses for reducing inter-cell interference with low-latency traffic in new radio
US10958394B2 (en) 2017-03-10 2021-03-23 Qualcomm Incorporated Ultra-reliable low-latency communication indication channelization designs
US10411795B2 (en) 2017-03-14 2019-09-10 Qualcomm Incorporated Coverage enhancement mode switching for wireless communications using shared radio frequency spectrum
US10742234B2 (en) 2017-03-15 2020-08-11 Qualcomm Incorporated Code block group definition configuration for wireless communication
US10555210B2 (en) 2017-03-15 2020-02-04 Qualcomm Incorporated Group indicator for code block group based retransmission in wireless communication
US11303392B2 (en) 2017-03-16 2022-04-12 Qualcomm Incorporated Multi-HARQ methods and apparatus for codeblock group based transmissions
US11219017B2 (en) 2017-03-16 2022-01-04 Qualcomm Incorporated Multiplexing different services in wireless communications
US10771196B2 (en) 2017-03-20 2020-09-08 Qualcomm Incorporated Techniques for signaling compressed HARQ or retransmission information between a base station and a user equipment
US10555203B2 (en) 2017-03-22 2020-02-04 Qualcomm Incorporated Channel reservation techniques for millimeter wave systems
US10667244B2 (en) 2017-03-23 2020-05-26 Qualcomm Incorporated Techniques and apparatuses for waveform signaling for downlink communications
WO2018170834A1 (en) 2017-03-23 2018-09-27 Qualcomm Incorporated Parity bit channel assignment for polar coding
US10484146B2 (en) 2017-03-23 2019-11-19 Qualcomm Incorporated Downlink retransmission under unreliable code block group (CBG) level ACK/NACK feedback
US11910388B2 (en) 2017-03-24 2024-02-20 Qualcomm Incorporated Uplink control channel configuration for wireless communications
US10716013B2 (en) 2017-03-24 2020-07-14 Qualcomm Incorporated Beam refinement for millimeter wave (MMW) system
US10230502B2 (en) 2017-03-24 2019-03-12 Qualcomm Incorporated Hybrid automatic repeat request buffer configuration
US10484934B2 (en) 2017-03-24 2019-11-19 Qualcomm Incorporated Network discovery for wireless communications
US10637615B2 (en) 2017-03-30 2020-04-28 Qualcomm Incorporated Retransmission indication based on an acknowledgement based feedback scheme for wireless communication
US10925048B2 (en) 2017-03-30 2021-02-16 Qualcomm Incorporated Control resource set for single-carrier waveform
US11032808B2 (en) 2017-03-30 2021-06-08 Qualcomm Incorporated Frequency hopping for control resource set with single carrier waveform
US10623163B2 (en) 2017-03-31 2020-04-14 Qualcomm Incorporated Coexistence of control resource sets with different waveforms
WO2018176498A1 (en) 2017-04-01 2018-10-04 Qualcomm Incorporated SCHEMES FOR RECOVERY OF eMBB's RS PUNCTURING FROM DYNAMIC MULTIPLEXING OF URLLC/eMBB
WO2018176478A1 (en) 2017-04-01 2018-10-04 Qualcomm Incorporated Communication system and method having polar coding with two concatenated cyclic redundancy check codes
US11469945B2 (en) 2017-04-03 2022-10-11 Qualcomm Incorporated Dynamic bandwidth configuration in narrowband communication
US10727987B2 (en) 2017-04-03 2020-07-28 Qualcomm Incorporated Feedback for codeblock group based transmissions
US11063800B2 (en) 2017-04-04 2021-07-13 Qualcomm Incorporated Synchronization signaling supporting multiple waveforms
US10548153B2 (en) 2017-04-04 2020-01-28 Qualcomm Incorporated Methods and apparatus for supporting frequency division multiplexing of multiple waveforms
US10484992B2 (en) 2017-04-05 2019-11-19 Qualcomm Incorporated Channel reservation for multi-user scheduling
US10511399B2 (en) 2017-04-07 2019-12-17 Qualcomm Incorporated Techniques and apparatuses for downlink control channel design using a top to bottom search space
US10433179B2 (en) 2017-04-12 2019-10-01 Qualcomm Incorporated Spatial-division multiple access (SDMA) across multiple operators
US10547422B2 (en) 2017-04-13 2020-01-28 Qualcomm Incorporated SRS transmission with implied RTS/CTS
US10897326B2 (en) 2017-04-14 2021-01-19 Qualcomm Incorporated Sharing a single coreset bandwidth across multiple user equipments
US10609660B2 (en) 2017-04-19 2020-03-31 Qualcomm Incorporated Synchronization for wideband coverage enhancement
US10298289B2 (en) 2017-04-19 2019-05-21 Qualcomm Incorporated Synchronization and paging channel design for wireless communications
US10484954B2 (en) 2017-05-10 2019-11-19 Qualcomm Incorporated Synchronization for wideband coverage enhancement
JP7357541B2 (ja) 2017-04-20 2023-10-06 クアルコム，インコーポレイテッド ポーラ符号のための動的凍結ビットおよび誤り検出
US11006376B2 (en) 2017-04-21 2021-05-11 Qualcomm Incorporated Techniques to encode or decode a self-decodable portion of a physical broadcast channel in a synchronization signal block
US10721774B2 (en) 2017-04-24 2020-07-21 Qualcomm Incorporated Frequency hopping configuration for a multi-tone physical random access channel transmission
US10575185B2 (en) 2017-04-27 2020-02-25 Qualcomm Incorporated Spectrum renting negotiation
US10595342B2 (en) 2017-05-01 2020-03-17 Qualcomm Incorporated Simultaneous reception sweep and transmission in a full-duplex node
US10484054B2 (en) 2017-05-01 2019-11-19 Qualcomm Incorporated Techniques and apparatuses for priority-based resource configuration
US10779222B2 (en) 2017-05-04 2020-09-15 Qualcomm Incorporated Grant-free admission control to a shared channel
US10764840B2 (en) 2017-05-05 2020-09-01 Qualcomm Incorporated Sounding reference signal (SRS) coordination, power control, and synchronization for distributed coordinated multipoint (CoMP)
US10615825B2 (en) 2017-05-05 2020-04-07 Qualcomm Incorporated Early-termination techniques for polar list decoders
US10404509B2 (en) 2017-05-11 2019-09-03 Qualcomm Incorporated Slot structure design using guard intervals in a single carrier waveform
US10686469B2 (en) 2017-05-15 2020-06-16 Qualcomm Incorporated Payload size ambiguity and false alarm rate reduction for polar codes
US10455457B2 (en) 2017-05-24 2019-10-22 Qualcomm Incorporated NR-SS unified operation mode in coordinated and uncoordinated bands
US10687359B2 (en) 2017-05-25 2020-06-16 Qualcomm Incorporated System acquisition in a shared radio frequency spectrum band
US10541851B2 (en) 2017-05-25 2020-01-21 Qualcomm Incorporated Synchronization signal block signaling for wireless communications in shared spectrum
US10904908B2 (en) 2017-06-01 2021-01-26 Qualcomm Incorporated Grantless uplink transmission for eMTC-U
US10432357B2 (en) 2017-06-02 2019-10-01 Qualcomm Incorporated Sequence-based polar code description
US10623138B2 (en) 2017-06-02 2020-04-14 Qualcomm Incorporated Sequence-based polar code description
US10405228B2 (en) 2017-06-08 2019-09-03 Qualcomm Incorporated System information block providing cell access information supporting wideband coverage enhancement in wireless communication networks
US10484935B2 (en) 2017-06-12 2019-11-19 Qualcomm Incorporated Discovery for spectrum renting
US10568128B2 (en) 2017-06-14 2020-02-18 Qualcomm Incorporated Techniques and apparatuses for scheduling request acknowledgement
US11051263B2 (en) 2017-06-15 2021-06-29 Qualcomm Incorporated Synchronization channel and system acquisition for internet of things communications in a shared spectrum
US10700910B2 (en) 2017-06-16 2020-06-30 Qualcomm Incorporated Single carrier waveform data transmission and reception based on configurable DFT window
US12476733B2 (en) 2017-06-19 2025-11-18 Qualcomm Incorporated Communication techniques with self-decodable redundancy versions (RVs) using systematic codes
US10667188B2 (en) 2017-06-21 2020-05-26 Qualcomm Incoporated Method and apparatus for multiplexing hybrid satellite constellations
US10602543B2 (en) 2017-06-23 2020-03-24 Qualcomm Incorporated Asynchronous channel reservation design with partial symbol alignment
US10778370B2 (en) 2017-06-26 2020-09-15 Qualcomm Incorporated Communication techniques involving polar codewords with reduced repetition
US11664947B2 (en) 2017-06-26 2023-05-30 Qualcomm Incorporated Techniques for orthogonal demodulation reference signals
US10630450B2 (en) 2017-06-27 2020-04-21 Qualcomm Incorporated Overlapping code block groups for multiple codewords
US10856296B2 (en) 2017-06-28 2020-12-01 Qualcomm Incorporated Techniques and apparatuses for determining channels for frequency hopping in an unlicensed radio frequency spectrum band
WO2019000366A1 (en) 2017-06-30 2019-01-03 Qualcomm Incorporated SELECTING CODE TYPES FOR ENCODING INFORMATION BITS
US10701717B2 (en) 2017-07-05 2020-06-30 Qualcomm Incorporated Coexistence of autonomous and grant based uplink transmissions
US10687219B2 (en) 2017-07-05 2020-06-16 Qualcomm Incorporated Uplink transmission techniques in shared spectrum wireless communications
US10638371B2 (en) 2017-07-06 2020-04-28 Qualcomm Incorporated Universal reservation signal for medium sharing
US10667282B2 (en) 2017-07-11 2020-05-26 Qualcomm Incorporated Uplink hopping pattern modes for hybrid automatic repeat request (HARQ) transmissions
US11025403B2 (en) 2017-07-12 2021-06-01 Qualcomm Incorporated Frame structure dependent configuration of physical channels
US10673674B2 (en) 2017-07-12 2020-06-02 Qualcomm Incorporated Techniques and apparatuses for multiplexing schemes for millimeter wave downlink single carrier waveforms
US10700907B2 (en) 2017-07-12 2020-06-30 Qualcomm Incorporated Waveform for millimeter wave new radio
US10848251B2 (en) 2017-07-14 2020-11-24 Qualcomm Incorporated Channel quality measurement in unlicensed deployments
US11122566B2 (en) 2017-07-20 2021-09-14 Qualcomm Incorporated Waveform design based on power spectral density (PSD) parameters
US10694493B2 (en) 2017-07-24 2020-06-23 Qualcomm Incorporated Paging and DRX enhancements for eMTC-U (IOT-U)
US10700710B2 (en) 2017-07-24 2020-06-30 Qualcomm Incorporated Indicating a number of copied information bits in a retransmission
US11064424B2 (en) 2017-07-25 2021-07-13 Qualcomm Incorporated Shared spectrum synchronization design
US11252645B2 (en) 2017-07-28 2022-02-15 Qualcomm Incorporated DMTC window reservation signal in NR shared spectrum
US10959267B2 (en) 2017-07-28 2021-03-23 Qualcomm Incorporated RACH configurations for NR shared spectrum
US10798602B2 (en) 2017-07-31 2020-10-06 Qualcomm Incorporated Radio resource management and radio link monitoring for enhanced machine type communication in shared spectrum
US10484959B2 (en) 2017-07-31 2019-11-19 Qualcomm Incorporated Positioning techniques in wireless communication systems
US10616737B2 (en) 2017-07-31 2020-04-07 Qualcomm Incorporated Enhanced machine type communications physical uplink control channel design
US10833705B2 (en) 2017-08-02 2020-11-10 Qualcomm Incorporated Information bit distribution design for polar codes
US10687356B2 (en) 2017-08-08 2020-06-16 Qualcomm Incorporated Channel reservation signal in NR shared spectrum
US10856319B2 (en) 2017-08-09 2020-12-01 Qualcomm Incorporated Link dependent scheduling request format for URLLC
US20190053255A1 (en) 2017-08-11 2019-02-14 Qualcomm Incorporated Sr configuration for enabling services of different priorities
US10735134B2 (en) 2017-08-11 2020-08-04 Qualcomm Incorporated Self-decodable redundancy versions for low-density parity-check codes
US10917918B2 (en) 2017-08-15 2021-02-09 Qualcomm Incorporated EMTC-U-UCI reporting procedures and enhancements
US11051175B2 (en) 2017-08-18 2021-06-29 Qualcomm Incorporated Uplink transmission techniques in shared spectrum wireless communications
US11601223B2 (en) 2017-08-18 2023-03-07 Qualcomm Incorporated Systems and methods for HARQ transmission and retransmission using multiple code words
US20190068335A1 (en) 2017-08-25 2019-02-28 Qualcomm Incorporated Grant-free uplink communication
US10813136B2 (en) 2017-08-30 2020-10-20 Qualcomm Incorporated Dual connectivity with a network that utilizes an unlicensed frequency spectrum
US20190075597A1 (en) 2017-09-01 2019-03-07 Qualcomm Incorporated Methods, apparatuses and systems for supporting long term channel sensing in shared spectrum
US10985897B2 (en) 2017-09-11 2021-04-20 Qualcomm Incorporated Methods and apparatus for dynamic time-division duplexing (TDD)
US10904773B2 (en) 2017-09-12 2021-01-26 Qualcomm Incorporated Beam management techniques in millimeter wave systems
US10986665B2 (en) 2017-09-15 2021-04-20 Qualcomm Incorporated Quasi-colocation for LBT
US11012922B2 (en) 2017-09-18 2021-05-18 Qualcomm Incorporated Common search space design for coverage enhancement in wireless communications
US10523300B2 (en) 2017-09-19 2019-12-31 Qualcomm Incorporated Beam refinement techniques in millimeter wave systems
US11283548B2 (en) 2017-09-19 2022-03-22 Qualcomm Incorporated Physical downlink control channel retransmission for ultra-reliable low-latency communications
US10511987B2 (en) 2017-09-20 2019-12-17 Qualcomm Incorporated Methods and apparatus related to enhanced machine type communication
US10652914B2 (en) 2017-09-20 2020-05-12 Qualcomm Incorporated CSI-RS scrambling of subframes in a multi-subframe DRS
US11497047B2 (en) 2017-09-25 2022-11-08 Qualcomm Incorporated User equipment-specific scheduling request repetitions
US11683833B2 (en) 2017-09-28 2023-06-20 Qualcomm Incorporated Spatial listen-before-talk (LBT) with channel variation consideration
US11064518B2 (en) 2017-09-29 2021-07-13 Qualcomm Incorporated Asynchronous single beam directional listen-before-talk
US10925090B2 (en) 2017-09-29 2021-02-16 Qualcomm Incorporated On-demand listen-before-talk
US10959105B2 (en) 2017-09-29 2021-03-23 Qualcomm Incorporated Methods, apparatuses and systems for configuring bandwidth parts in shared spectrum
US11019605B2 (en) 2017-09-29 2021-05-25 Qualcomm Incorporated Reservation repetition for deafness avoidance
US10812202B2 (en) 2017-10-02 2020-10-20 Qualcomm Incorporated Resources for channel measurements
US11064439B2 (en) 2017-10-09 2021-07-13 Qualcomm Incorporated Asynchronous carrier aggregation
US10841805B2 (en) 2017-10-10 2020-11-17 Qualcomm Incorporated Inter-operator coordination for channel access in shared spectrum
US10728928B2 (en) 2017-10-11 2020-07-28 Qualcomm Incorporated Random backoff process for spatial listen-before-talk (LBT)
US10932282B2 (en) 2017-10-11 2021-02-23 Qualcomm Incorporated Scheduling timeline in new radio-spectrum sharing (NR-SS)
US10674498B2 (en) 2017-10-12 2020-06-02 Qualcomm Incorporated Accelerated cell activation in wireless communication
US10856300B2 (en) 2017-10-17 2020-12-01 Qualcomm Incorporated Per-TTI rank control within transmission opportunity for downlink comp
US10631261B2 (en) 2017-10-19 2020-04-21 Qualcomm Incorporated Legacy compatible primary synchronization signal / secondary synchronization signal design for coverage extended and cost-reduced user equipment
US11115924B2 (en) 2017-10-19 2021-09-07 Qualcomm Incorporated Methods and apparatus for transmission and detection of multi-band wake-up
US10736112B2 (en) 2017-10-19 2020-08-04 Qualcomm Incorporated Common search space scrambling for MulteFire coverage enhancement
US10945288B2 (en) 2017-10-23 2021-03-09 Qualcomm Incorporated Reservation and challenge schemes for listen-before-talk
US10652854B2 (en) 2017-10-30 2020-05-12 Qualcomm Incorporated Paging super frame window for narrowband communications using the unlicensed spectrum
US11678333B2 (en) 2017-11-03 2023-06-13 Qualcomm Incorporated Methods and apparatus for bandwidth part enhancement
US10959263B2 (en) 2017-11-03 2021-03-23 Qualcomm Incorporated Listen before talk for millimeter wave multi-user multiple-input multiple-output communications
US11006415B2 (en) 2017-11-07 2021-05-11 Qualcomm Incorporated Channel list signaling
US10772110B2 (en) 2017-11-07 2020-09-08 Qualcomm Incorporated Universal channel reservation signal for medium sharing
US10834782B2 (en) 2017-11-07 2020-11-10 Qualcomm Incorporated Techniques for low-band anchored high-band connections in wireless communications
US11324047B2 (en) 2017-11-10 2022-05-03 Qualcomm Incorporated NR-unlicensed transmission opportunity structure with flexible starting point
US10749713B2 (en) 2017-11-13 2020-08-18 Qualcomm Incorporated Resource pattern for uplink transmissions
US10849117B2 (en) 2017-11-13 2020-11-24 Qualcomm Incorporated Techniques and apparatuses for control information determination for payloads with leading zeroes
US11516834B2 (en) 2017-11-13 2022-11-29 Qualcomm Incorporated Uplink control information transmission
US10674449B2 (en) 2017-11-13 2020-06-02 Qualcomm Incorporated Signal for a synchronized communication system operating in a shared spectrum frequency band
US10879954B2 (en) 2017-11-14 2020-12-29 Qualcomm Incorporated Logical channel hopping sequence design
US10944512B2 (en) 2017-11-17 2021-03-09 Qualcomm Incorporated Code block group retransmission
US10965514B2 (en) 2017-11-17 2021-03-30 Qualcomm Incorporated Training field assisted medium sensing across multiple radio access technologies
US10849123B2 (en) 2017-11-17 2020-11-24 Qualcomm Incorporated Techniques and apparatuses for slot-based and non-slot-based scheduling in 5G
US11323227B2 (en) 2017-11-17 2022-05-03 Qualcomm Incorporated Multiplexing of physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) in uplink short burst transmission
US10680751B2 (en) 2017-11-17 2020-06-09 Qualcomm Incorporated Methods and apparatus for determining transport block size in wireless communication
US10771225B2 (en) 2017-11-17 2020-09-08 Qualcomm Incorporated Techniques and apparatuses for using mini-slots for hybrid automatic repeat request (HARQ) transmissions
US10805979B2 (en) 2017-11-21 2020-10-13 Qualcomm Incorporated Dual band discontinuous reception
US11005615B2 (en) 2017-11-22 2021-05-11 Qualcomm Incorporated Inter-cell interference mitigation for uplink ultra-reliable low latency communications
US10764920B2 (en) 2017-11-27 2020-09-01 Qualcomm Incorporated Semi-persistent scheduling for shared spectrum downlink
US10779328B2 (en) 2017-11-27 2020-09-15 Qualcomm Incorporated Reference signal and preempted resources collision handling
US11032032B2 (en) 2017-11-28 2021-06-08 Qualcomm Incorporated Sub-band configuration for preemption indication to eMBB UEs
US11050598B2 (en) 2017-11-28 2021-06-29 Qualcomm Incorporated Carrier information signaling in a 5G network
US10904871B2 (en) 2017-11-29 2021-01-26 Qualcomm Incorporated Aggregation level specific PDCCH modification
US10863543B2 (en) 2017-12-01 2020-12-08 Qualcomm Incorporated Subband based uplink access for NR-SS
US11863315B2 (en) 2017-12-04 2024-01-02 Qualcomm Incorporated Techniques and apparatuses for avoiding collisions on an uplink data channel and a cell-specific or UE-specific uplink control channel
US10707915B2 (en) 2017-12-04 2020-07-07 Qualcomm Incorporated Narrowband frequency hopping mechanisms to overcome bandwidth restrictions in the unlicensed frequency spectrum
US10694536B2 (en) 2017-12-04 2020-06-23 Qualcomm Incorporated Dynamic downlink control information timing indications in new radio
US10958383B2 (en) 2017-12-06 2021-03-23 Qualcomm Incorporated Time based redundancy version determination for grant-free signaling
US11102763B2 (en) 2017-12-08 2021-08-24 Qualcomm Incorporated Techniques for multiplexing of uplink channels in a shared radio frequency spectrum band
US11388728B2 (en) 2017-12-08 2022-07-12 Qualcomm Incorporated Channel availability protocol in a shared spectrum
US10784999B2 (en) 2017-12-08 2020-09-22 Qualcomm Incorporated Narrowband physical broadcast channel design on multiple anchor channels
US10651972B2 (en) 2017-12-11 2020-05-12 Qualcomm Incorporated Adjusted fractally enhanced kernel polar codes for achievable signal-to-noise ratio spike mitigation
WO2019114973A1 (en) * 2017-12-14 2019-06-20 Telefonaktiebolaget Lm Ericsson (Publ) Channel estimation in a multi-layer system
US11552750B2 (en) 2017-12-15 2023-01-10 Qualcomm Incorporated Subband-based random access and scheduling request for new-radio-spectrum sharing (NR-SS)
US10833836B2 (en) 2017-12-20 2020-11-10 Qualcomm Incorporated Managing release of resources for uplink grant-free transmissions on bandwidth part deactivation
US10728000B2 (en) 2018-01-04 2020-07-28 Qualcomm Incorporated Reference signal transmission techniques in wireless communications
US10880033B2 (en) 2018-01-12 2020-12-29 Qualcomm Incorporated Two-stage resource spread multiple access (RSMA) design
US11343822B2 (en) 2018-01-12 2022-05-24 Qualcomm Incorporated Coded-bit allocation for uplink control information (UCI) segmentation
US11101910B2 (en) 2018-01-12 2021-08-24 Qualcomm Incorporated Sequence based short code design for resource spread multiple access (RSMA)
US10708950B2 (en) 2018-01-16 2020-07-07 Qualcomm Incorporated Transmission opportunity sharing for autonomous uplink
US10980051B2 (en) 2018-01-22 2021-04-13 Qualcomm Incorporated Physical downlink control channel (PDCCH) repetition and decoding for ultra-reliability low latency communication (URLLC)
US11038567B2 (en) 2018-01-23 2021-06-15 Qualcomm Incorporated Adaptive autonomous uplink communication design
US11025296B2 (en) 2018-01-30 2021-06-01 Qualcomm Incorporated Nested frequency hopping for data transmission
US10862581B2 (en) 2018-01-30 2020-12-08 Qualcomm Incorporated Dynamic time division duplex (TDD) frame structure for hopping superframes
US10939441B2 (en) 2018-01-31 2021-03-02 Qualcomm Incorporated Autonomous uplink with analog beams
US10992427B2 (en) 2018-01-31 2021-04-27 Qualcomm Incorporated Bandwidth reservation signal for base station operation in digital modulation
US10924167B2 (en) 2018-02-01 2021-02-16 Qualcomm Incorporated Forward compatible design for non-orthogonal UE signature sequences
US10873967B2 (en) 2018-02-02 2020-12-22 Qualcomm Incorporated Multi-carrier preemption indicator
US10873345B2 (en) 2018-02-05 2020-12-22 Qualcomm Incorporated Enhanced polar code construction
US10912129B2 (en) 2018-02-08 2021-02-02 Qualcomm Incorporated SSB multiplexing and RMSI monitoring in NR-U
US10772132B2 (en) 2018-02-08 2020-09-08 Qualcomm Incorporated PRACH configuration on NR-U
US10965424B2 (en) 2018-02-09 2021-03-30 Qualcomm Incorporated Uplink control information transmission in autonomous uplink
US11310838B2 (en) 2018-02-14 2022-04-19 Qualcomm Incorporated Uplink and downlink preemption indications
US11171765B2 (en) 2018-02-15 2021-11-09 Qualcomm Incorporated System and method for indicating preemption of transmissions
US11064474B2 (en) 2018-02-16 2021-07-13 Qualcomm Incorporated Search space randomization
US10848228B2 (en) 2018-02-16 2020-11-24 Qualcomm Incorporated Modulation and coding scheme and channel quality indicator for high reliability
US11102765B2 (en) 2018-02-22 2021-08-24 Qualcomm Incorporated Enhanced uplink grant-free/downlink semi-persistent scheduling for ultra-reliable low latency communications
US10897764B2 (en) 2018-02-23 2021-01-19 Qualcomm Incorporated Radio-unlicensed (NR-U) interlace-based resource allocations
US11071138B2 (en) 2018-02-23 2021-07-20 Qualcomm Incorporated OTA dynamic TDD with CUI-R multiplexed in UL
US11233688B2 (en) 2018-02-23 2022-01-25 Qualcomm Incorporated Physical downlink control channel (PDCCH) aggregation level (AL) design for new radio (NR) ultra-reliable low latency communication (URLLC)
US10931430B2 (en) 2018-02-25 2021-02-23 Qualcomm Incorporated Uplink preemption in carrier aggregation/multi-connectivity mode
US10863538B2 (en) 2018-02-26 2020-12-08 Qualcomm Incorporated Grant processing during grant-free uplink repetitions
US10880914B2 (en) 2018-02-26 2020-12-29 Qualcomm Incorporated Grant free uplink transmission techniques
US11159222B2 (en) 2018-02-27 2021-10-26 Qualcomm Incorporated Channel state information operations for ultra-reliable low latency communications
US11363630B2 (en) 2018-03-01 2022-06-14 Qualcomm Incorporated Bandwidth part (BWP) configuration for subband access in new radio-unlicensed (NR-U)
US11212051B2 (en) 2018-03-06 2021-12-28 Qualcomm Incorporated Beam management for autonomous uplink with analog beams
US11212034B2 (en) 2018-03-14 2021-12-28 Qualcomm Incorporated Techniques for signaling QoS class indicators
US11245497B2 (en) 2018-03-16 2022-02-08 Qualcomm Incorporated Repetition-based transmissions
US11451272B2 (en) 2018-03-21 2022-09-20 Qualcomm Incorporated Precoding patterns for shared channel transmission repetition
US11394520B2 (en) 2018-03-23 2022-07-19 Qualcomm Incorporated Considerations on bandwidth part (BWP) management for ultra-reliability low latency communication (URLLC)
US11470655B2 (en) 2018-03-27 2022-10-11 Qualcomm Incorporated Enhanced downlink control information detection
US11246155B2 (en) 2018-03-27 2022-02-08 Qualcomm Incorporated Acknowledgement feedback in unlicensed new radio
US10972217B2 (en) 2018-03-30 2021-04-06 Qualcomm Incorporated Scheduling for low-density parity-check codes
US11108526B2 (en) 2018-04-02 2021-08-31 Qualcomm Incorporated Channel quality indicator (CQI) reporting for ultra-reliable low latency communications (URLLC)
US10863524B2 (en) 2018-04-04 2020-12-08 Qualcomm Incorporated Multiplexing rules for mixed communication protocols
US11019504B2 (en) 2018-04-04 2021-05-25 Qualcomm Incorporated On-demand coverage extended broadcast signal
US10965505B2 (en) 2018-04-05 2021-03-30 Qualcomm Incorporated Flexible waveform synthesis in NR-SS
US20190313385A1 (en) 2018-04-05 2019-10-10 Qualcomm Incorporated Compact dci for urllc
US10742353B2 (en) 2018-04-09 2020-08-11 Qualcomm Incorporated Cross-correlation reduction for control signals
US11089575B2 (en) 2018-04-11 2021-08-10 Qualcomm Incorporated Multi-carrier enhancements for improving reliability in URLLC-U
US11082187B2 (en) 2018-04-12 2021-08-03 Qualcomm Incorporated Rate-matching for single downlink control information multi-transmission reception point transmissions
US10966240B2 (en) 2018-04-13 2021-03-30 Qualcomm Incorporated Uplink preemption indication management
US11026218B2 (en) 2018-04-16 2021-06-01 Qualcomm Incorporated Indication on joint multi-transmission point transmission in new radio system
US10764833B2 (en) 2018-04-16 2020-09-01 Qualcomm Incorporated Uplink preemption or dynamic power control for mobile broadband and low latency communication multiplexing
US10917905B2 (en) 2018-04-16 2021-02-09 Qualcomm Incorporated Autonomous uplink transmission using shared radio frequency spectrum
US11233614B2 (en) 2018-04-18 2022-01-25 Qualcomm Incorporated Discovery reference signals in narrowband communications
US11057885B2 (en) 2018-04-26 2021-07-06 Qualcomm Incorporated Frame-based initiator device operation
US11395270B2 (en) 2018-04-27 2022-07-19 Qualcomm Incorporated Uplink control information payload size
US11546924B2 (en) 2018-04-27 2023-01-03 Qualcomm Incorporated Group physical control channel for autonomous uplink transmissions
US11050531B2 (en) 2018-04-27 2021-06-29 Qualcomm Incorporated Frequency diversity with carrier hopping in unlicensed spectrum
US11190234B2 (en) 2018-04-27 2021-11-30 Qualcomm Incorporated Opportunistic frequency switching for frame based equipment
US11259327B2 (en) 2018-04-27 2022-02-22 Qualcomm Incorporated Listen-before-talk operation in an unlicensed downlink and licensed uplink deployment
US11265917B2 (en) 2018-04-30 2022-03-01 Qualcomm Incorporated Aligned LBT gaps for single operator FBE NR-SS
US10848978B2 (en) 2018-04-30 2020-11-24 Qualcomm Incorporated Radio (NR) for spectrum sharing
US11115161B2 (en) 2018-05-02 2021-09-07 Qualcomm Incorporated Transmission diversity for FBE idle period handling
US11177909B2 (en) 2018-05-04 2021-11-16 Qualcomm Incorporated Methods and apparatus related to ACK/NACK feedback with multi-TRP transmissions
US11212786B2 (en) 2018-05-09 2021-12-28 Qualcomm Incorporated Service and format indication techniques for downlink control information
US11272526B2 (en) 2018-05-09 2022-03-08 Qualcomm Incorporated Efficient operation with unlicensed downlink (DL) and licensed uplink (UL) by transmission of selective DL messages using licensed UL
US11470591B2 (en) 2018-05-10 2022-10-11 Qualcomm Incorporated Direct transport block size specification
US10980049B2 (en) 2018-05-10 2021-04-13 Qualcomm Incorporated Allocating physical uplink control channel (PUCCH) resources for ultra-reliable low latency communication (URLLC)
US11324006B2 (en) 2018-05-11 2022-05-03 Qualcomm Incorporated Signaling for sub-slot time-domain resource allocation
US11129196B2 (en) 2018-05-11 2021-09-21 Qualcomm Incorporated Shared channel design around reserved resources
US11425746B2 (en) 2018-05-11 2022-08-23 Qualcomm Incorporated Scheduling requests for grant-free configurations
US11582000B2 (en) 2018-05-11 2023-02-14 Qualcomm Incorporated Front loaded sounding reference signal and physical random access channel signal
KR102452435B1 (ko) 2018-05-14 2022-10-07 삼성전자 주식회사 무선 통신 시스템에서 채널 추정 방법 및 장치
US12294952B2 (en) 2018-05-17 2025-05-06 Qualcomm Incorporated Transmission power configuration
US10999039B2 (en) 2018-05-20 2021-05-04 Qualcomm Incorporated Providing acknowledgement/negative acknowledgement (ACK/NACK) feedback for downlink semi-persistent scheduling (SPS) with sub-slot periodicity
US10841953B2 (en) 2018-05-21 2020-11-17 Qualcomm Incorporated Receiver-based listen before talk techniques in shared millimeter wave radio frequency spectrum
US10841950B2 (en) 2018-05-21 2020-11-17 Qualcomm Incorporated Listen before talk techniques in shared millimeter wave radio frequency spectrum
US11109285B2 (en) 2018-05-24 2021-08-31 Qualcomm Incorporated Multi-PCell design for URLLC reliability
US10728913B2 (en) 2018-05-25 2020-07-28 Qualcomm Incorporated Multi-transmission/reception point (multi-TRP) transmission with dynamic TRP clusters
US10855355B2 (en) 2018-05-25 2020-12-01 Qualcomm Incorporated Channel state information reporting enhancements for unlicensed coordinated multipoint
US11503559B2 (en) 2018-05-29 2022-11-15 Qualcomm Incorporated Cell acquisition in frequency diversity implementing opportunistic frequency switching for frame based equipment access
US10785797B2 (en) 2018-06-04 2020-09-22 Qualcomm Incorporated Beam refinement reference signal (BRRS) design for mmWave system in shared spectrum
US11770851B2 (en) 2018-06-06 2023-09-26 Qualcomm Incorporated Synchronized spectrum sharing across multiple adjacent carriers
US11005595B2 (en) 2018-06-07 2021-05-11 Qualcomm Incorporated Self-decodability for low-density parity-check codes
US11218282B2 (en) 2018-06-08 2022-01-04 Qualcomm Incorporated Fast activation and deactivation for low latency communications
US11064376B2 (en) 2018-06-08 2021-07-13 Qualcomm Incorporated Radio link monitoring and radio link failure recovery
US11108598B2 (en) 2018-06-11 2021-08-31 Qualcomm Incorporated Transmission preemption in multi-TRP operation
US20190387532A1 (en) 2018-06-18 2019-12-19 Qualcomm Incorporated System information block transmission scheduling
US11122592B2 (en) 2018-06-20 2021-09-14 Qualcomm Incorporated 5G new radio with sharing between priority access license and general authorized access communications
US11031958B2 (en) 2018-06-25 2021-06-08 Qualcomm Incorporated Hybrid polar code design for ultra-reliable low latency communications (URLLC)
US11026225B2 (en) 2018-06-25 2021-06-01 Qualcomm Incorporated Subslot physical downlink control channel monitoring and downlink preemption indication
US10952103B2 (en) 2018-06-27 2021-03-16 Qualcomm Incorporated Transmission opportunity (TXOP) structure for new radio-unlicensed (NR-U) and new radio-synchronized sharing (NR-SS)
US11606176B2 (en) 2018-06-29 2023-03-14 Qualcomm Incorporated Reference signal and uplink control channel association design
US10813069B2 (en) 2018-06-29 2020-10-20 Qualcomm Incorporated Techniques and apparatuses for using different timing advance values for different numerologies
US11026257B2 (en) 2018-06-29 2021-06-01 Qualcomm Incorporated PDCCH with repetition
US10912012B2 (en) 2018-06-29 2021-02-02 Qualcomm Incorporated Initial network access for downlink unlicensed deployment
US10631333B2 (en) 2018-07-06 2020-04-21 Qualcomm Incorporated Synchronized medium sharing with private network
US10873440B2 (en) 2018-07-12 2020-12-22 Qualcomm Incorporated Time division duplexing techniques in shared radio frequency spectrum
US11184777B2 (en) 2018-07-19 2021-11-23 Qualcomm Incorporated Synchronous shared spectrum
US11350416B2 (en) 2018-07-20 2022-05-31 Qualcomm Incorporated Physical uplink control channel repetition configuration
US11324016B2 (en) 2018-07-25 2022-05-03 Qualcomm Incorporated Multi-operator shared spectrum structure compatible with frame-based equipment
US11956788B2 (en) 2018-07-30 2024-04-09 Qualcomm Incorporated Expiration periods for low latency communications
US11737084B2 (en) 2018-07-30 2023-08-22 Qualcomm Incorporated Demodulation reference signal port hopping for grant-free physical uplink shared channel communication
US11309999B2 (en) 2018-07-31 2022-04-19 Qualcomm Incorporated Repetition techniques for autonomous uplink transmissions
US11265114B2 (en) 2018-08-01 2022-03-01 Qualcomm Incorporated Communication resource pairing and repetition
US11026097B2 (en) 2018-08-03 2021-06-01 Qualcomm Incorporated Coexistence between spectrum sharing systems and asynchronous channel access systems
US10841957B2 (en) 2018-08-03 2020-11-17 Qualcomm Incorporated Facilitating multi-node listen before talk functionality via a centralized controller
US10721628B2 (en) 2018-08-09 2020-07-21 Qualcomm Incorporated Low-latency communication in shared spectrum
US11019667B2 (en) 2018-08-09 2021-05-25 Qualcomm Incorporated Uplink collision handling
US11425737B2 (en) 2018-08-10 2022-08-23 Qualcomm Incorporated Group signaling for ultra-reliable low-latency communications
US11089518B2 (en) 2018-08-10 2021-08-10 Qualcomm Incorporated Intertechnology medium sharing for millimeter wave
US11196514B2 (en) 2018-08-10 2021-12-07 Qualcomm Incorporated Hybrid automatic repeat request-acknowledgement (HARQ-ACK) history feedback channel
US11057051B2 (en) 2018-08-13 2021-07-06 Qualcomm Incorporated Fractally enhanced kernel polar coding
US11076358B2 (en) 2018-08-21 2021-07-27 Qualcomm Incorporated Temporary power adjustment indication for uplink transmissions
US11233547B2 (en) 2018-08-21 2022-01-25 Qualcomm Incorporated Techniques for multiple feedback transmissions per slot in wireless communications
US11134469B2 (en) 2018-08-21 2021-09-28 Qualcomm Incorporated Reliability for multicast transmissions
US11223505B2 (en) 2018-08-22 2022-01-11 Qualcomm Incorporated Waveform multiplexing in millimeter wave band
US11153781B2 (en) 2018-08-24 2021-10-19 Qualcomm Incorporated Variable cyclic prefix (CP) within a transmission slot in millimeter wave band
US11696284B2 (en) 2018-09-10 2023-07-04 Qualcomm Incorporated Interference detection, signaling, and mitigation techniques for low latency transmissions
US11096186B2 (en) 2018-09-11 2021-08-17 Qualcomm Incorporated Modulation and coding scheme table design for power efficiency
US11166238B2 (en) 2018-09-13 2021-11-02 Qualcomm Incorporated Methods and apparatus for supporting multiple power and spectrum efficient modes for power saving
US10833902B2 (en) 2018-09-21 2020-11-10 Qualcomm Incorporated Multi-radio access technology (multi-RAT) diversity for ultra-reliable low-latency communication (URLLC)
US10972219B2 (en) 2018-09-24 2021-04-06 Qualcomm Incorporated LDPC interleaver design for improved error floor performance
US11678335B2 (en) 2018-09-25 2023-06-13 Qualcomm Incorporated Uplink preemption indication
US11363465B2 (en) 2018-09-26 2022-06-14 Qualcomm Incorporated Licensed supplemental uplink as fallback with unlicensed uplink and downlink
US10880889B2 (en) 2018-09-26 2020-12-29 Qualcomm Incorporated Narrowband user equipment (UE) support with multi-channel listen-before-talk (LBT)
US11606799B2 (en) 2018-09-26 2023-03-14 Qualcomm Incorporated Preemption indication and permission indication management for mobile broadband and low latency communication multiplexing
US11172504B2 (en) 2018-09-27 2021-11-09 Qualcomm Incorporated Coordination of listen before talk structure in new radio-unlicensed multi-channel access
US11751242B2 (en) 2018-09-27 2023-09-05 Qualcomm Incorporated Radio-unlicensed multi-channel access for low-radio frequency-capable user equipment
US11265887B2 (en) 2018-09-28 2022-03-01 Qualcomm Incorporated Measurement report on user equipment clear channel assessment status
US11234253B2 (en) 2018-09-28 2022-01-25 Qualcomm Incorporated Transmit parameter control
US11109384B2 (en) 2018-10-03 2021-08-31 Qualcomm Incorporated Collision handling for semi-persistent scheduling signals
US11212829B2 (en) 2018-10-05 2021-12-28 Qualcomm Incorporated Uplink processing techniques for reduced uplink timelines in wireless communications
US11122591B2 (en) 2018-10-09 2021-09-14 Qualcomm Incorporated Physical layer and MAC layer uplink channel prioritization
US11581959B2 (en) * 2020-03-04 2023-02-14 Samsung Electronics Co., Ltd. Channel estimation and prediction with measurement impairment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118771A1 (en) * 2000-11-29 2002-08-29 Peter Larsson Methods and arrangements in a telecommunications system
TW201448506A (zh) * 2008-02-04 2014-12-16 Nokia Corp 藉遮罩來傳遞天線組態資訊之方法及裝置（一）
US20120182857A1 (en) * 2010-10-25 2012-07-19 Texas Instruments Incorporated Sounding Reference Signal Processing for LTE
US20130266093A1 (en) * 2010-12-22 2013-10-10 Telefonaktiebolaget L M Ericsson (Publ) Methods and Receiver for Positioning of Clock Related Spurious Signals
US20190089504A1 (en) * 2016-03-07 2019-03-21 Lg Electronics Inc. METHOD FOR TRANSMITTING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING NARROWBAND IoT, AND DEVICE THEREFOR
US20180054269A1 (en) * 2016-08-22 2018-02-22 Phasorlab, Inc. Time-Domain and Frequency-Domain Approach to Frequency Offset Correction Method for LTE SC-FDMA Uplink

Also Published As

Publication number Publication date
KR102863206B1 (ko) 2025-09-23
US20220345336A1 (en) 2022-10-27
EP4128676A4 (en) 2024-07-31
WO2021202159A1 (en) 2021-10-07
TW202143667A (zh) 2021-11-16
EP4128676A1 (en) 2023-02-08
CA3170036A1 (en) 2021-10-07
CN115398866A (zh) 2022-11-25
US11411779B2 (en) 2022-08-09
KR20220161365A (ko) 2022-12-06
US20210328838A1 (en) 2021-10-21

Similar Documents

Publication Publication Date Title
TWI894246B (zh) 用於參考信號通道估計之方法及系統
JP5801310B2 (ja) Ｏｆｄｍ装置のチャネル予測
TWI483596B (zh) 頻率相關之同相正交相不均衡估測
JP6858237B2 (ja) スパース順序付け反復群マルチアンテナチャネル推定
US9294318B2 (en) Symbol detection for alleviating inter-symbol interference
US20110026652A1 (en) Method and system for diversity and mask matching in channel estimation in ofdm communication networks using circular convolution
EP3479505A1 (en) Reducing bit rate requirement over an uplink fronthaul link
TWI733971B (zh) 信號傳輸方法和設備
WO2020147726A1 (en) Method and apparatus for multi-path delay estimation
CN106792778B (zh) 一种测量lte系统中上行srs信号功率的方法及装置
TWI749036B (zh) 頻域載波間干擾補償方法與裝置、非暫時性電腦可讀媒體、製造處理器的方法及建構積體電路的方法
KR20120071250A (ko) 이동통신 시스템의 채널 추정 장치 및 방법
CN111294917B (zh) 基于pdcch估计定时偏差的方法、装置、存储介质及用户设备
EP2840745B1 (en) Method and apparatus for channel estimation using an adaptive windowing approach
US12621190B2 (en) Reference signal channel estimation
EP4002784A1 (en) Carrier frequency offset correction and doppler mitigation
WO2024243863A1 (en) Frequency offset estimation
Hwang et al. Multiuser channel estimation for SC-FDMA system with CAZAC sounding reference sequence and Instruments-in-MATLAB verification
Su et al. Robust Decision Feedback Equalizer for OFDM System under Severe ISI Channel.
KR20250138664A (ko) 센싱과 통합된 하향링크 채널 및 신호를 송수신 하기 위한 방법 및 장치
KR20240068564A (ko) 통신 시스템에서 위상 잡음 보상 방법 및 장치
WO2019145042A1 (en) Inband ripple compensation