[미국특허]
Method for transmitting channel quality information in a multiple input multiple output system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-001/00
출원번호
US-0673745
(2008-08-14)
등록번호
US-8761286
(2014-06-24)
우선권정보
KR-10-2008-0010672 (2008-02-01)
국제출원번호
PCT/KR2008/004743
(2008-08-14)
§371/§102 date
20101220
(20101220)
국제공개번호
WO2009/022873
(2009-02-19)
발명자
/ 주소
Seo, Dong Youn
Kim, Bong Hoe
Kim, Ki Jun
Kim, Hak Seong
Roh, Dong Wook
출원인 / 주소
LG Electronics Inc.
대리인 / 주소
Lee, Hong, Degerman, Kang & Waimey
인용정보
피인용 횟수 :
1인용 특허 :
44
초록▼
A method for transmitting a CQI in a MIMO system is disclosed. A method for allowing a receiver to feed back a CQI value to a transmitter in a Multiple Input Multiple Output (MIMO) system includes, receiving a transmission (Tx) pilot signal for each Tx antenna from a base station (BS), measuring a f
A method for transmitting a CQI in a MIMO system is disclosed. A method for allowing a receiver to feed back a CQI value to a transmitter in a Multiple Input Multiple Output (MIMO) system includes, receiving a transmission (Tx) pilot signal for each Tx antenna from a base station (BS), measuring a first CQI value of a first codeword and a second CQI value of a second codeword on the basis of the pilot signal, and transmitting the first CQI value of the first codeword and the second CQI value of the second codeword to the base station (BS), wherein at least one of the first and second CQI values includes specific information capable of indicating a transmission restriction status of a corresponding codeword.
대표청구항▼
1. A method for a user equipment (UE) in a Multiple Input Multiple Output (MIMO) system, the method performed by the UE and comprising: measuring first channel quality information (CQI) for a first codeword and second CQI for a second codeword based on one or more received downlink signals; andtrans
1. A method for a user equipment (UE) in a Multiple Input Multiple Output (MIMO) system, the method performed by the UE and comprising: measuring first channel quality information (CQI) for a first codeword and second CQI for a second codeword based on one or more received downlink signals; andtransmitting the first CQI for the first codeword and the second CQI for the second codeword,wherein at least the first CQI or the second CQI includes information indicating a transmission restriction status for a corresponding codeword when a channel quality for the corresponding codeword is equal to or less than a reference value,wherein the information indicating the transmission restriction status is a SINR (Signal to Interference plus Noise Ratio) of ‘-∞dB’, a coding rate of ‘0’, a modulation order of ‘0’, or a predetermined MCS (Modulation and Coding Selection) level index, andwherein the predetermined MCS level index indicates either the coding rate of ‘0’ or the modulation order of ‘0’. 2. The method according to claim 1, wherein the first CQI and the second CQI are indicative of CQI of some parts of a total band. 3. The method according to claim 1, wherein each of the first codeword and the second codeword is a single transmission information unit coded by a cyclic redundancy check (CRC) code and an error correction code. 4. A method for a base station (BS) in a Multiple Input Multiple Output (MIMO) system, the method performed by the BS and comprising: receiving first CQI for a first codeword and second CQI for a second codeword; anddetermining at least one codeword based on the first CQI and the second CQI,wherein at least the first CQI or the second CQI includes information indicating a transmission restriction status for a corresponding codeword when a channel quality for the corresponding codeword is equal to or less than a reference value,wherein the information indicating the transmission restriction status is a SINR (Signal to Interference plus Noise Ratio) of ‘-∞dB’, a coding rate of ‘0’, a modulation order of ‘0’, or a predetermined MCS (Modulation and Coding Selection) level index, andwherein the predetermined MCS level index indicates either the coding rate of ‘0’ or the modulation order of ‘0’. 5. A user equipment (UE) for a Multiple Input Multiple Output (MIMO) system, the UE comprising: one or more antennas configured to receive one or more downlink signals; anda signal processor configured to measure first channel quality information (CQI) for a first codeword and second CQI for a second codeword based on the one or more downlink signals and to control the one or more antennas to transmit the first CQI for the first codeword and the second CQI for the second codeword,wherein at least the first CQI or the second CQI includes information indicating a transmission restriction status for a corresponding codeword when a channel quality for the corresponding codeword is equal to or less than a reference value,wherein the information indicating the transmission restriction status is a SINR (Signal to Interference plus Noise Ratio) of ‘-∞dB’, a coding rate of ‘0’, a modulation order of ‘0’, or a predetermined MCS (Modulation and Coding Selection) level index, andwherein the predetermined MCS level index indicates either the coding rate of ‘0’ or the modulation order of ‘0’. 6. A base station (BS) in a Multiple Input Multiple Output (MIMO) system, the BS comprising: one or more antennas configured to receive first channel quality information (CQI) for a first codeword and second CQI for a second codeword; anda signal processor configured to determine at least one codeword based on the first CQI and the second CQI,wherein at least the first CQI or the second CQI includes information indicating a transmission restriction status for a corresponding codeword when a channel quality for the corresponding codeword is equal to or less than a reference value,wherein the information indicating the transmission restriction status is a SINR (Signal to Interference plus Noise Ratio) of ‘-∞dB’, a coding rate of ‘0’, a modulation order of ‘0’, or a predetermined MCS (Modulation and Coding Selection) level index, andwherein the predetermined MCS level index indicates either the coding rate of ‘0’ or the modulation order of ‘0’.
Brian G. Agee ; Matthew Bromberg ; Derek Gerlach ; David Gibbons ; James Timothy Golden ; Minnie Ho ; Elliott Hoole ; Mary Jesse ; Robert Lee Maxwell ; Robert G. Mechaley, Jr. ; Robert Ray , Highly bandwidth efficient communications.
Classon, Brian K.; Baum, Kevin L.; Ghosh, Amitava; Love, Robert T.; Nangia, Vijay; Stewart, Kenneth A., Method and apparatus for reducing round trip latency and overhead within a communication system.
Ahn, Joon Kui; Kim, Bong Hoe; Yun, Young Woo; Kim, Ki Jun; Lee, Jung Hoon; Lee, Dae Won; Seo, Dong Youn; Roh, Dong Wook; Yoon, Suk Hyon, Method for acquiring resource region information for PHICH and method of receiving PDCCH.
Ahn, Joon Kui; Kim, Bong Hoe; Yun, Young Woo; Kim, Ki Jun; Lee, Jung Hoon; Lee, Dae Won; Seo, Dong Youn; Roh, Dong Wook; Yoon, Suk Hyon, Method for acquiring resource region information for PHICH and method of receiving PDCCH.
Tan Boon Tiong,SGX ; Aftelak Andrew John,GBX ; Boscovic Dragan,GBX ; Johnson Christopher Philip,GBX ; Gibbs Jonathan Alastair,GBX ; Wray Antony John,GBX, Method for reverse channel sounding in a communications system.
Le Nir, Vincent; Helard, Maryline, Method for the multiple-antenna transmission of a signal by space-time block codes, corresponding reception method and signal.
Lee, Dae Won; Kim, Ki Jun; Roh, Dong Wook; Noh, Yu Jin; Ahn, Joon Kui; Lee, Jung Hoon, Method for transmitting and receiving control information through PDCCH.
Lee, Dae Won; Kim, Ki Jun; Roh, Dong Wook; Noh, Yu Jin; Ahn, Joon Kui; Lee, Jung Hoon, Method for transmitting and receiving control information through PDCCH.
Kim, Hak Seong; Choi, Sung Duk; Kim, Ki Jun; Yoon, Suk Hyon; Ahn, Joon Kui; Kim, Bong Hoe; Seo, Dong Youn; Yun, Young Woo; Jeong, Seong Hoon; Kim, Eun Sun; Lee, Dae Won; Lee, Jung Hoon, Method for transmitting downlink control signal.
Yoon, Young C.; Sun, Li-Hsiang; Kim, Sang G.; Wang, Shu; Lee, Suk Woo; Kim, Hobin, Method of efficiently utilizing resources in a wireless communication system.
Elliott Hoole ; Mary Jesse ; Robert G. Mechaley, Jr. ; David James Ryan ; David Stephenson, Method of polling second stations for functional quality and maintenance data in a discrete multitone spread spectrum communications system.
Lee, Young Dae; Chun, Sung Duck; Jung, Myung Cheul; Fischer, Patrick, Method of transmitting and receiving point-to-multipoint service in mobile communication system.
Chun, Sung Duck; Lee, Young Dae; Park, Sung Jun; Yi, Seung June, Method of transmitting and receiving scheduling information in a wireless communication system.
Su, Weifeng; Liu, K. J. Ray; Safar, Zoltan, Systems and methods for coding in broadband wireless communication systems to achieve maximum diversity in space, time and frequency.
Jang, Jiwoong; Chung, Jaehoon; Lee, Hyunwoo; Ko, Hyunsoo, Method for determining modulation order of uplink control information in multiple antenna wireless communication system and device therefor.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.