公开(公告)号：ZA201308907B

公开(公告)日：2015-02-25

申请号：ZA201308907

申请日：2013-11-26

Applicant: PANASONIC IP CORP AMERICA

Inventor： HOSHINO MASAYUKI ,  IMAMURA DAICHI ,  NISHIO AKIHIKO ,  XU MING ,  ZHANG ZHI

IPC: H04L20060101

Abstract: Method of scrambling signals, transmission point device and user equipment using the method are provided. The method is for scrambling signals assigned on predetermined radio resources of at least one layer of resource blocks with the same time and frequency resources, and comprises the steps of: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, the blind detection for the UE is enabled and the signaling overhead is reduced.

公开(公告)号：EP2567481A4

公开(公告)日：2014-11-05

申请号：EP11777120

申请日：2011-04-01

Applicant: PANASONIC IP CORP AMERICA

Inventor： ZHANG ZHI ,  XU MING ,  HOSHINO MASAYUKI ,  NAKAO SEIGO ,  IMAMURA DAICHI

IPC: H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04J13/18 ,  H04L5/00

CPC classification number: H04J13/004 ,  H04J13/0048 ,  H04J13/12 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0066 ,  H04L43/087

Abstract: The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved.