公开(公告)号：US10164799B2

公开(公告)日：2018-12-25

申请号：US15068502

申请日：2016-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiongshu Yi ,  Chaochao Zhang ,  Lu Guan ,  Yun Liu

IPC: H04L25/02 ,  H04L25/03 ,  H04B7/0413 ,  H04J11/00 ,  H04L5/12 ,  H04W16/18 ,  H04W72/04 ,  H04W88/02

Abstract: The present disclosure relates to a remote radio unit (RRU), which is connected to a baseband unit (BBU) and an antenna, comprising: a service transmit channel configured to transmit a first correction signal through the antenna, and a standing wave detecting circuit associated with the service transmit channel, wherein: a working frequency of the standing wave detecting circuit is consistent with the service transmit channel, and the standing wave detecting circuit is capable of detecting a standing wave ratio of the service transmit channel and is configured to receive a correction signal looped back by the antenna, and send the correction signal looped back by the antenna to the BBU, wherein the correction signal looped back by the antenna comprises a portion of the first correction signal reflected by the antenna and is used for a calculation of a correction coefficient of the service transmit channel.

公开(公告)号：US20170063586A1

公开(公告)日：2017-03-02

申请号：US15349612

申请日：2016-11-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ke Sun ,  Yun Liu ,  Chunhui Le ,  Linfeng Xia ,  Chaochao Zhang

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04L27/26 ,  H04B7/0456 ,  H04L5/0007 ,  H04L5/0048 ,  H04W72/04 ,  H04W88/085

Abstract: The present invention discloses a method for transmitting data between a baseband processing unit BBU and a remote radio unit RRU, and a data transmission apparatus. The RRU selects partial data in received data, and sends the partial data to the BBU by using a common public interface CPRI; or the BBU performs only channel coding processing or only channel coding processing and constellation mapping processing on the data, and sends processed data to the RRU. Then the RRU performs constellation mapping processing, multiple-antenna multiple-input multiple-output MIMO coding processing, and orthogonal frequency division multiplexing OFDM symbol generation processing on the data, or the RRU performs MIMO coding processing and OFDM symbol generation processing on the data. That is, steps in which data redundancy is added are executed by the RRU.

Abstract translation: 本发明公开了一种在基带处理单元BBU和远程无线单元RRU之间发送数据的方法以及数据发送装置。 RRU在接收到的数据中选择部分数据，并使用通用公共接口CPRI将部分数据发送到BBU; 或者BBU仅对数据执行信道编码处理或仅进行信道编码处理和星座映射处理，并将处理的数据发送到RRU。 然后，RRU对该数据执行星座映射处理，多天线多输入多输出MIMO编码处理和正交频分复用OFDM符号生成处理，或者RRU对该数据进行MIMO编码处理和OFDM符号生成处理。 也就是说，RRU执行添加数据冗余的步骤。