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41.发明申请METHOD AND APPARATUS FOR RANK ADAPTATION IN AN ORTHOGONAL FEQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 有权在正交频分多址通信系统中进行RAN适配的方法和装置公开(公告)号：US20130114425A1
公开(公告)日：2013-05-09
申请号：US13290401
申请日：2011-11-07
CPC分类号： H04B7/024 , H04B7/0413 , H04B7/0465 , H04B7/0626 , H04B7/063
摘要： A communication system provides for adaptive rank determination, for example, a rank 2 transmission in instances where a rank 1 transmission may be indicated under supported feedback modes in current standards where no explicit power adaptation can be assumed, for example, where a user equipment (UE) is limited to reporting a rank 1 channel due to a large dynamic range of a signal or due to a signal received by the UE from one base station (BS) antenna port drowning out a signal received by the UE from another BS antenna port. The communication system provides for the UE to implement rank 2 transmission in such instances by using per-antenna port power control at a BS serving the UE. In one embodiment, the BS controls the rank determination at the UE by signaling transmit power or power offset related parameters to use for rank and transmission parameters determination and feedback.
摘要翻译： 通信系统提供自适应秩确定，例如，在可以在当前标准中的支持的反馈模式下指示秩1传输的情况下的等级2传输，其中不能假设明确的功率适配，例如，其中用户设备 UE）由于信号的大动态范围或由于UE从一个基站（BS）天线端口接收的信号而被限制为报告秩1信道，该信号淹没了UE从另一个BS天线端口接收到的信号 。 通信系统通过在服务于UE的BS的每个天线端口功率控制来提供UE在这种情况下实现2级传输。 在一个实施例中，BS通过信令发送功率或功率偏移相关参数来控制UE处的秩确定，以用于秩和传输参数确定和反馈。
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