公开(公告)号：US20150180629A1

公开(公告)日：2015-06-25

申请号：US14579304

申请日：2014-12-22

Applicant: Telefonica, S.A.

Inventor： Javier LORCA HERNANDO

IPC: H04L5/00 ,  H04L25/03 ,  H04J11/00

CPC classification number: H04L5/0048 ,  H04J11/00 ,  H04L5/0005 ,  H04L5/0007 ,  H04L25/03006 ,  H04L25/03866

Abstract: Method, system and computer programs for performing virtualization of a radio access technology over OFDMA wireless networks,The method comprises splitting OFDMA time-frequency resources in each subframe of an OFDMA frame structure; reserving, in the downlink, resource elements in the split OFDMA time-frequency resources reserved for virtualization of a radio access technology for insertion of downlink reference signals to perform downlink channel estimation by user terminals with a specified separation between signals in the time and frequency domains; inserting, in the uplink, training or pilot signals along the split OFDMA time-frequency resources reserved for virtualization of said radio access technology by mapping said signals over time-frequency resources scheduled for a particular user according to a multiple access scheme supported by said radio access technology; and mapping, in said downlink and uplink, complex baseband symbols corresponding to information from said radio access technology into said split OFDMA time-frequency resources reserved for virtualization of said radio access technology.

Abstract translation: 用于通过OFDMA无线网络执行无线电接入技术的虚拟化的方法，系统和计算机程序。该方法包括在OFDMA帧结构的每个子帧中分割OFDMA时频资源; 在下行链路中保留用于虚拟化用于虚拟化下行链路参考信号的无线电接入技术的分裂OFDMA时间 - 频率资源中的资源元素，以执行时域和频域中的信号之间的指定间隔的用户终端的下行链路信道估计 ; 根据由所述无线电接收机支持的多址接入方案，通过针对特定用户调度的时间频率资源映射所述信号，沿着所述无线接入技术的虚拟化所分配的OFDMA时频资源，在上行链路中插入训练或导频信号 接入技术; 以及在所述下行链路和上行链路中将对应于来自所述无线接入技术的信息的复数基带符号映射到为所述无线电接入技术的虚拟化而保留的所述分割OFDMA时频资源。