Title:
同期信号検出のためにエッジ信号を用いる干渉除去
Document Type and Number:
Japanese Patent JP5503077
Kind Code:
B2
Abstract:
In 3GPP Release (Rel) 8, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) may be transmitted in six resource blocks, occupying, for example, the center 62 tones (i.e., subcarriers) of an LTE-A system, wherein the center tone may be skipped. In synchronous networks, cells may transmit their respective PSS and SSS on the same frequency at the same time, wherein strong cells may overshadow the weak ones. However, strong cells may not be the serving cell for a user equipment (UE), particularly in a heterogeneous network. Traditionally, interference cancelation, an enhanced receiver technique, has been used, wherein the UE may first find the strong cells and cancel them out to find the serving cell. However, due to propagation delay and synchronization uncertainty, a timing offset may exist among cells, even in synchronous networks. Therefore, systems and methods are disclosed, providing for improved handling of the timing offset among different cells by applying a time domain cancelation.
Inventors:
Jean, Shaosha
Luo, Tao
Luo, Tao
Application Number:
JP2013504001A
Publication Date:
May 28, 2014
Filing Date:
April 08, 2011
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04J11/00; H04B1/10; H04J99/00
Domestic Patent References:
| JP2009239472A |
Foreign References:
| WO2010014968A1 |
Other References:
星野 兼次 外2名,マルチリンク伝送におけるタイミングオフセット干渉キャンセラに関する一検討,電子情報通信学会技術研究報告,2008年 1月18日,Vol.107, No.439,pp.13-18,RCS2007-163
Yuan Shen et al.,Neighboring Cell Search Techniques for LTE Systems,Communications (ICC), 2010 IEEE International Conference on ,2010年 5月27日
Qualcomm Europe,Heterogeneous Networks: General views,3GPP R1-094224,2009年10月16日
Samsung,Performance evaluation of Home eNB CIC function based on time/frequency domain silencing,3GPP R1-103049,2010年 5月14日
Yuan Shen et al.,Neighboring Cell Search Techniques for LTE Systems,Communications (ICC), 2010 IEEE International Conference on ,2010年 5月27日
Qualcomm Europe,Heterogeneous Networks: General views,3GPP R1-094224,2009年10月16日
Samsung,Performance evaluation of Home eNB CIC function based on time/frequency domain silencing,3GPP R1-103049,2010年 5月14日
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori