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タイトル: | Resource reduction method for the LTE-advanced uplink ACK/NACK signal and SR |
著者: | NAKAO, Seigo TAKAGI, Kenji FUKUOKA, Masaru IMAMURA, Daichi MURATA, Hidekazu https://orcid.org/0000-0003-2467-0255 (unconfirmed) YAMAMOTO, Koji https://orcid.org/0000-0003-4106-3983 (unconfirmed) YOSHIDA, Susumu |
キーワード: | LTE-Advanced space orthogonal resource transmit diversity phase rotation ACK/NACK signal scheduling request |
発行日: | Jan-2011 |
出版者: | Institute of Electronics, Information and Communication Engineers(IEICE) |
誌名: | IEICE Transactions on Communications |
巻: | E94-B |
号: | 1 |
開始ページ: | 364 |
終了ページ: | 367 |
抄録: | Advanced Evolved Universal Terrestrial Radio Access (Advanced E-UTRA), called LTE-Advanced, has been standardized in the 3rd Generation Partnership Project (3GPP) as a candidate for IMT-Advanced. LTE-Advanced supports spatial orthogonal-resource transmit diversity (SORTD) [1], [2] for ACK/NACK signals and scheduling requests (SRs), which are used to control downlink hybrid automatic repeat requests (HARQs) and manage uplink radio resources based on uplink data traffic, respectively. Both ACK/NACK signals and SRs are carried via a physical uplink control channel (PUCCH) [3], and a common PUCCH format is used for both ACK/NACK signals and SRs. If SORTD is used, the base station assigns mutually orthogonal resources to each antenna included in the user equipment (UE) for ACK/NACK signals and SRs; hence, the number of required resources increases with the number of transmitting antennas in the UE. In this paper, we study the resource reduction method for ACK/NACK signal and SR in case of SORTD using the concept of common resource. In addition, we investigate a phase rotation scheme for common resources to improve the SR detection performance. |
著作権等: | © 2011 The Institute of Electronics, Information and Communication Engineers |
URI: | http://hdl.handle.net/2433/193073 |
DOI(出版社版): | 10.1587/transcom.E94.B.364 |
出現コレクション: | 学術雑誌掲載論文等 |
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