公开(公告)号：US20140233535A1

公开(公告)日：2014-08-21

申请号：US14008969

申请日：2012-03-16

Applicant: China Academy of Telecommunications Technology

Inventor： Yali Zhao ,  Fangli Xu ,  Li Chen ,  Jiamin Liu

IPC: H04L5/00 ,  H04W56/00

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L27/2656 ,  H04W56/00 ,  H04W56/0045 ,  H04W72/0453

Abstract: The invention discloses an uplink transmission method and apparatus in a carrier aggregation system and relates to the field of radio communications so as to address the issue of how to perform uplink transmission in a secondary cell when a base station configures a user equipment additionally with the secondary cell. In the invention, a user equipment selects, under a preset reference carrier selection rule, one of downlink carriers corresponding to cells having already eatablished downlink synchronization with a base station as a timing reference downlink carrier used by a secondary cell after the base station configures the user equipment additionally with the secondary cell; and the user equipment performs uplink transmission in the secondary cell according to downlink timing of the timing reference downlink carrier. With the invention, a timing reference downlink carrier used by an additionally configured secondary cell in uplink transmission can be determined and uplink transmission can be further preformed over the timing reference downlink carrier.

Abstract translation: 本发明公开了一种载波聚合系统中的上行链路传输方法和装置，涉及无线电通信领域，以便在基站另外配备辅助小区的情况下解决如何在二次小区中执行上行链路传输的问题 细胞。 在本发明中，用户装置在预先设定的基准载波选择规则下，选择对应于已经与基站进行了下行同步的小区的下行链路载波之一作为辅助小区使用的定时基准下行载波，基站在基站配置 用户设备另外与二次电池; 并且用户设备根据定时参考下行链路载波的下行链路定时在二次小区中执行上行链路传输。 利用本发明，可以确定在上行链路传输中由附加配置的二级小区使用的定时参考下行链路载波，并且可以在定时参考下行链路载波上进一步执行上行链路传输。