公开(公告)号：US20140146689A1

公开(公告)日：2014-05-29

申请号：US13684327

申请日：2012-11-23

Applicant: HITACHI, LTD.

Inventor： Sudhanshu GAUR ,  Long GAO ,  Joydeep ACHARYA

IPC: H04W72/08

CPC classification number: H04W72/082 ,  H04J11/0053 ,  H04J11/0056 ,  H04L1/0069 ,  H04L1/1867 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0073 ,  H04L2001/0093

Abstract: A communications system employing CoMP transmission to suppress interference comprises: a CoMP user equipment; and a plurality of base stations, one of the base stations being an associated base station of the CoMP user equipment to transmit data to the CoMP user equipment, the plurality of base stations including multiple CoMP base stations for the CoMP user equipment. The CoMP base stations for the CoMP user equipment transmit CoMP downlink data, including subframes which comprise physical resource blocks having a plurality of resource elements (REs) and cell-specific reference signal (CRS) resource element (RE) locations. PDSCH bit-level muting or puncturing information is determined, based on radio resource management measurement and the subframes sent from the multiple CoMP base stations, to identify PDSCH REs that suffer strong CRS interference transmission from within the multiple CoMP base stations and are to be subjected to one of bit-level muting or bit-level puncturing.

Abstract translation: 采用CoMP传输抑制干扰的通信系统包括：CoMP用户设备; 以及多个基站，所述基站中的一个是所述CoMP用户设备的相关基站，用于向所述CoMP用户设备发送数据，所述多个基站包括用于所述CoMP用户设备的多个CoMP基站。 用于CoMP用户设备的CoMP基站发送CoMP下行链路数据，包括包括具有多个资源元素（RE）和小区特定参考信号（CRS）资源元素（RE））位置的物理资源块的子帧。 基于无线电资源管理测量和从多个CoMP基站发送的子帧来确定PDSCH比特级静音或删截信息，以识别在多个CoMP基站内遭受强CRS干扰传输并且将被承受的PDSCH RE 到位级静音或比特级穿孔之一。

公开(公告)号：US20160044514A1

公开(公告)日：2016-02-11

申请号：US14773913

申请日：2013-03-15

Applicant: HITACHI, LTD.

Inventor： Joydeep ACHARYA ,  Long GAO ,  Sudhanshu GAUR

IPC: H04W16/10 ,  H04W24/08 ,  H04W48/16

CPC classification number: H04W16/10 ,  H04W24/02 ,  H04W24/08 ,  H04W48/16 ,  H04W84/045

Abstract: A communications system includes a macro base station, a plurality of UEs (user equipment), a plurality of small cells, and a network through which the macro base station, the UEs, and the small cells communicate with each other, the small cells within a macro coverage area of the macro base station. The macro base station comprises a processor, a memory, and a small cell on/off module which is operable, for each small cell of the plurality of small cells, to: determine an interference metric for the small cell; if the determined interference metric meets a preset condition for the small cell, then determine a loss in signal strength to the UEs associated with the small cell caused by switching off the small cell; and judge whether to switch off the small cell based on at least one of the determined interference metric or the determined loss in signal strength.

Abstract translation: 通信系统包括宏基站，多个UE（用户设备），多个小小区以及宏基站，UE和小小区之间相互通信的网络，小区内的小小区 宏基站的宏覆盖区域。 宏基站包括处理器，存储器和小小区开/关模块，其可操作用于所述多个小小区中的每个小小区以确定所述小小区的干扰度量; 如果确定的干扰度量符合小小区的预设条件，则确定由关闭小小区导致的与小小区相关联的UE的信号强度的损失; 并且基于所确定的干扰度量或确定的信号强度的损失中的至少一个来判断是否关闭小小区。