Title:
マルチキャリア通信システムにおけるアップリンク送信のタイミング
Document Type and Number:
Japanese Patent JP5784697
Kind Code:
B2
Abstract:
A terminal with transmitter and receiver operates in a multi-carrier communication system and receives at least two downlink carriers. One or more timing advance commands are received, each associated with a group of one or more uplink carriers, each group being associated with one or more of the received downlink carriers. For each downlink carrier associated with one of the groups of uplink carriers, one is selected as a reference downlink carrier; the reference downlink carrier timing is ascertained; and a transmission time period is ascertained based on the timing of the downlink reference carrier and an offset specified by the timing advance command associated with the group of uplink carriers. The transmission time period comprises a start time and a stop time. Transmission is initiated at an earliest transmission start time of the ascertained transmission time periods and is ceased at a latest ascertained stop time.
Inventors:
Andgart, Niklas
Berglung, Christian
Camuf, Massias
Lindov, Bengt
Wallen, Andesh
Berglung, Christian
Camuf, Massias
Lindov, Bengt
Wallen, Andesh
Application Number:
JP2013501782A
Publication Date:
September 24, 2015
Filing Date:
March 28, 2011
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
H04W56/00; H04J11/00; H04W52/52; H04W72/04
Domestic Patent References:
| JP2005521347A |
Other References:
Huawei,Different Timing Advance Impact on Carrier Aggregation[online], 3GPP TSG-RAN WG2♯67bis R2-095815,インターネット,2009年10月12日
ZTE,Impact analysis of multiple TA[online], 3GPP TSG-RAN WG2♯68bis R2-100308,インターネット,2010年 1月18日
E-mail rapporteur (NTT DOCOMO, INC.),CA support for multi-TA[online], 3GPP TSG-RAN WG2♯69 R2-101567,インターネット,2010年 2月22日
Huawei,UL ACK/NACK resource allocation for carrier aggregation[online], 3GPP TSG-RAN WG1#60 R1-101051,インターネット,2010年 2月22日
ZTE,Impact analysis of multiple TA[online], 3GPP TSG-RAN WG2♯68bis R2-100308,インターネット
E-mail rapporteur (NTT DOCOMO, INC.),CA support for multi-TA[online], 3GPP TSG-RAN WG2♯69 R2-101567,インターネット
Huawei,UL ACK/NACK resource allocation for carrier aggregation[online], 3GPP TSG-RAN WG1#60 R1-101051,インターネット
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama