TW200711362A - Multi-carrier operation in data transmission systems - Google Patents

Multi-carrier operation in data transmission systems

Info

Publication number
TW200711362A
TW200711362A TW095115431A TW95115431A TW200711362A TW 200711362 A TW200711362 A TW 200711362A TW 095115431 A TW095115431 A TW 095115431A TW 95115431 A TW95115431 A TW 95115431A TW 200711362 A TW200711362 A TW 200711362A
Authority
TW
Taiwan
Prior art keywords
carrier
timing
channels
uplink
carriers
Prior art date
Application number
TW095115431A
Other languages
Chinese (zh)
Other versions
TWI404366B (en
Inventor
Durga Prasad Malladi
Serge D Willenegger
Juan Montojo
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of TW200711362A publication Critical patent/TW200711362A/en
Application granted granted Critical
Publication of TWI404366B publication Critical patent/TWI404366B/en

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  • Mobile Radio Communication Systems (AREA)

Abstract

Multi-carrier point-to-multi-point CDMA system implementation reduces hardware changes in legacy single-carrier systems. The number of common downlink channels, such as timing/synchronization and paging channels, is reduced by designating an anchor carrier for transmitting these channels. Procedures for adding carriers and carrier acquisition are simplified through common carrier timing, signaling by the network to the user equipment (UE) of timing offsets and scrambling code selection, and other measures. Channel reuse is employed to minimize changes in asymmetric systems with different numbers of uplink and downlink carriers. Channel Quality Indicator (CQI) field is divided into multiple subfields to enable transmission of multiple CQIs and ACK/NACK indicators on one uplink carrier. Joint and separate scheduling schemes are shown for concurrent scheduling of a data stream transmission to a UE via multiple downlink carriers.
TW95115431A 2005-04-28 2006-04-28 Multi-carrier operation in data transmission systems TWI404366B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67611005P 2005-04-28 2005-04-28
US67610905P 2005-04-28 2005-04-28

Publications (2)

Publication Number Publication Date
TW200711362A true TW200711362A (en) 2007-03-16
TWI404366B TWI404366B (en) 2013-08-01

Family

ID=44025831

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95115431A TWI404366B (en) 2005-04-28 2006-04-28 Multi-carrier operation in data transmission systems

Country Status (2)

Country Link
MY (1) MY144439A (en)
TW (1) TWI404366B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493079B1 (en) * 2001-11-02 2005-06-02 삼성전자주식회사 Apparatus for reporting quality of downlink channel in wide band-code division multiple access communication system using high speed data packet access scheme and method thereof

Also Published As

Publication number Publication date
MY144439A (en) 2011-09-15
TWI404366B (en) 2013-08-01

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