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Title:
METHOD AND APPARATUS FOR RELAYING SIGNAL IN WIRELESS NETWORK
Document Type and Number:
WIPO Patent Application WO/2011/118926
Kind Code:
A2
Abstract:
Disclosed are a control method and a control device for implementing two-way communication in a wireless network. A repeater can measure a channel matrix, which indicates channel information of each of a plurality of nodes based on signals received simultaneously from the plurality of the nodes, and calculate a first basic lattice size, which initializes the lattice sizes of the received signals according to predefined rules. Then, the repeater uses the channel matrix of each of the nodes and the initialized first lattice size to calculate for each of the nodes a first normalization factor, which normalizes the sizes of the signals simultaneously received from each of the nodes, and a minimum normalized factor, which is equivalent to the minimum value of the first normalization factor. And then, the repeater calculates a second lattice size for each of the nodes using the first normalization factor, the minimum normalization factor, and the initialized first lattice size, which have been calculated for each of the nodes. Then, the repeater calculates a second normalization factor using the second lattice size and the channel matrix of each of the nodes. And then, the repeater transmits the new calculated lattice size and the normalization factor to each of the nodes.

Inventors:
SEO, Han Byul (LG Institute, #533 Hogye 1-dong, Dongan-gu, Anyang-si, ilGyeonggi-do 431-080, 431-080, KR)
서한별 (경기도 안양시 동안구 호계1동 533번지 엘지전자 특허센터, 431-080 Gyeonggi-do, 431-080, KR)
PARK, Dae Young (School of Information and Communication Engineering, Inha University#253, Yonghyun-dong, Nam-gu, Incheon 402-751, 402-751, KR)
Application Number:
KR2011/001671
Publication Date:
September 29, 2011
Filing Date:
March 10, 2011
Export Citation:
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Assignee:
LG ELECTRONICS INC. (20 Yeouido-dong, Yeongdeungpo-gu, Seoul 150-721, 150-721, KR)
엘지전자 주식회사 (서울 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
INHA INDUSTRY PARTNERSHIP INSTITUTE (Inha University, #253 Yonghyun-dong, Nam-gu, Incheon 402-751, 402-751, KR)
인하대학교 산학협력단 (인천시 남구 용현동 253번지 인하대학교, 402-751 Incheon, 402-751, KR)
SEO, Han Byul (LG Institute, #533 Hogye 1-dong, Dongan-gu, Anyang-si, ilGyeonggi-do 431-080, 431-080, KR)
International Classes:
H04B7/14; H04B7/04
Domestic Patent References:
WO2009107314A12009-09-03
Other References:
G. YAMMINE ET AL.: 'Performance of Sp(n) Codes in Two-Way Wireless Relay Networks' INTERNATIONAL ITG WORKSHOP ON SMART ANTENNAS (WSA 2009) 18 February 2009, BERLIN, GERMANY,
R. VAZE ET AL.: 'Optimal Amplify and Forward Strategy for Two-Way Relay Channel with Multiple Relays' 2009 IEEE INFORMATION THEORY WORKSHOP ON NETWORKING AND INFORMATION THERORY (ITW 2009) 12 June 2009, VOLOS, GREECE, pages 181 - 185
Attorney, Agent or Firm:
KIM, Yong In et al. (KBK & Associates 7th Floor, Hyundae Building175-9, Jamsil-dong, Songpa-ku, Seoul 138-861, 138-861, KR)
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Claims: