公开(公告)号：EP2426971A4

公开(公告)日：2017-01-11

申请号：EP10769242

申请日：2010-04-09

Applicant: SUN PATENT TRUST

Inventor： TONG HUI ,  XU MING ,  HOSHINO MASAYUKI ,  IMAMURA DAICHI

IPC: H04W16/00 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04L5/0048 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0057 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/0473 ,  H04W72/082 ,  H04W72/085 ,  Y02D70/1262 ,  Y02D70/146

Abstract: A method and a system of setting up a reference signal in a radio communication system. The radio communication system includes a serving cell and a neighboring cell, and a mobile terminal of the serving cell uses the same temporal frequency resource so as to receive a serving resource block from the serving cell and receive an interference resource block from the neighboring cell. The method according to the present disclosure includes a step of setting up a user-specific reference signal in the interference resource block and a step in which puncturing is performed at same temporal frequency position as the temporal frequency position at which the user-specific reference signal is set up on the interference resource block of the serving resource block so as to prevent any signal from being transmitted at the punctured temporal frequency position. When the method and the system provided in the present disclosure are used and the interference power between cells is thereby measured, it is possible to effectively reduce feedback overhead in a coordinated beamforming.

公开(公告)号：EP2548315A4

公开(公告)日：2017-07-26

申请号：EP11755661

申请日：2011-03-15

Applicant: SUN PATENT TRUST

Inventor： TONG HUI ,  HOSHINO MASAYUKI ,  XU MING ,  NAKAO SEIGO ,  IMAMURA DAICHI

IPC: H04B7/06

CPC classification number: H04B7/0478 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/0663 ,  H04B2001/3855 ,  H04B2001/3861 ,  H04L25/03904 ,  H04L25/03917

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

Abstract translation: 本公开提供了一种在具有多个天线阵列的无线通信系统中生成码本的方法，以及使用该码本进行通信的无线通信系统，基站和终端。 该方法包括以下步骤：提供包含多个预编码矩阵的基本码本; 并将相位偏移分配给基本码本中的某些预编码矩阵以形成具有相位偏移的码本。 通过应用生成码本的方法并在无线通信系统，基站和终端中使用所生成的码本，减少了从客户端到基站侧的反馈开销，并且保持了多天线阵列的良好反馈精度。

公开(公告)号：EP2695346A4

公开(公告)日：2016-12-21

申请号：EP11869555

申请日：2011-09-29

Applicant: SUN PATENT TRUST

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

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04W72/044 ,  H04L5/0016 ,  H04L5/0051 ,  H04L25/0226 ,  H04L27/2613 ,  H04W72/121

Abstract: Method of scrambling signals, transmission point device, and user equipment using the method are provided. The method includes: 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, wherein the blind detection for the UE is enabled and the signaling overhead is reduced.

公开(公告)号：MY166137A

公开(公告)日：2018-06-06

申请号：MYPI2011005197

申请日：2010-04-09

Applicant: SUN PATENT TRUST

Inventor： TONG HUI ,  XU MING ,  HOSHINO MASAYUKI ,  IMAMURA DAICHI

IPC: H04B15/00 ,  H04L5/00 ,  H04W72/04

Abstract: A METHOD AND A SYSTEM OF SETTING UP A REFERENCE SIGNAL IN A RADIO COMMUNICATION SYSTEM. THE RADIO COMMUNICATION SYSTEM INCLUDES A SERVING CELL AND A NEIGHBORING CELL, AND A MOBILE TERMINAL OF THE SERVING CELL USES THE SAME TEMPORAL FREQUENCY RESOURCE SO AS TO RECEIVE A SERVING RESOURCE BLOCK FROM THE SERVING CELL AND RECEIVE AN INTERFERENCE RESOURCE BLOCK FROM THE NEIGHBORING CELL. THE METHOD ACCORDING TO THE PRESENT DISCLOSURE INCLUDES A STEP OF SETTING UP A USER-SPECIFIC REFERENCE SIGNAL IN THE INTERFERENCE RESOURCE BLOCK AND A STEP IN WHICH PUNCTURING IS PERFORMED AT SAME TEMPORAL FREQUENCY POSITION AS THE TEMPORAL FREQUENCY POSITION AT WHICH THE USER-SPECIFIC REFERENCE SIGNAL IS SET UP ON THE INTERFERENCE RESOURCE BLOCK OF THE SERVING RESOURCE BLOCK SO AS TO PREVENT ANY SIGNAL FROM BEING TRANSMITTED AT THE PUNCTURED TEMPORAL FREQUENCY POSITION. WHEN THE METHOD AND THE SYSTEM PROVIDED IN THE PRESENT DISCLOSURE ARE USED AND THE INTERFERENCE POWER BETWEEN CELLS IS THEREBY MEASURED, IT IS POSSIBLE TO EFFECTIVELY REDUCE FEEDBACK OVERHEAD IN A COORDINATED BEAMFORMING.

公开(公告)号：AU2011378051B2

公开(公告)日：2017-02-02

申请号：AU2011378051

申请日：2011-09-29

Applicant: SUN PATENT TRUST

Inventor： TONG HUI ,  HOSHINO MASAYUKI ,  IMAMURA DAICHI ,  XU MING

IPC: H04W24/10

Abstract: A method for determining Channel Quality Indicators to be reported by User Equipments in base station cooperation, and a base station and a User Equipment therefor are provided. The method comprising: assigning a sequence of adjustment factors to various possible base station cooperations; transmitting the assigned adjustment factors to UEs; calculating an original CQI for each possible base station cooperation in each UE; adjusting the original CQIs based on the received adjustment factors in UEs; and reporting one or multiple original CQI(s) that are the highest after the aforesaid adjustment and knowledge of which CQI(s) are reported to the base station by each UE.

公开(公告)号：AU2011363817B2

公开(公告)日：2016-03-03

申请号：AU2011363817

申请日：2011-03-31

Applicant: SUN PATENT TRUST

Inventor： TONG HUI ,  XU MING ,  HOSHINO MASAYUKI ,  IMAMURA DAICHI

IPC: H04B7/04 ,  H04L1/00

Abstract: There are provided a method, user equipment, and transmission point device for feeding back channel quality indicator (MU-CQI) to the transmission point in a communication system including the transmissin point and a plurality of user equipments, the method comprising steps: the transmission point sending a message to an intended user equipment of the plurality of user equipments; and the intended user equipment calculating the MU-CQI based on the message, and feeding back the MU-CQI to the transmission point. The present disclosure enables dynamic MU operation, and improves link adaptation performance with marginal downlink overhead. And the accuracy is not limited by codebook size.