公开(公告)号：EP1917772A1

公开(公告)日：2008-05-07

申请号：EP06783672.6

申请日：2006-08-21

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Industry Academic Cooperation of Kyunghee University

发明人： KWON, Jae-Kyun ,  AHN, Jae-Young ,  KIM, Yun-Hee ,  KANG, Sung-Kyo

IPC分类号： H04L27/26

CPC分类号： H04L5/023 ,  H04B7/022 ,  H04B7/0669 ,  H04W72/005

摘要： Provided are a method of providing a broadcast/multicast service in an OFDM cellular system, and a transmitting/receiving method, a transmitting/receiving apparatus and a system using the method. In the method, dividing adjacent cells transmitting the same broadcast/multicast data into a plurality of cell groups; allocating a coding method, which includes sub code that is a part of diversity code, into each of the cell groups so that a pair of transmission antennas, belonging to different cell groups, which transmit different parts of code symbols corresponding to the same data symbol vector are present; transmitting an OFDM symbol containing code symbols generated according to a coding method allocated to a cell group to which each of base stations belong; and a terminal diversity-combining reception symbols which are respectively extracted from received signals according to OFDM symbols which are respectively received from the base stations. Accordingly, it is possible to improve the receiving quality of a terminal located at a cell boundary, and coverage for specific data transmission rate.

公开(公告)号：EP1999861A1

公开(公告)日：2008-12-10

申请号：EP07715782.4

申请日：2007-03-23

申请人： Electronics and Telecommunications Research Institute ,  Industry Academic Cooperation Foundation of Kyunghee University

发明人： KWON, Jae-Kyun ,  AHN, Jae-Young ,  KIM, Yun-Hee ,  KANG, Sung-Kyo

IPC分类号： H04B7/02

CPC分类号： H04B7/022 ,  H04B7/0671 ,  H04B7/0697 ,  H04L1/0606 ,  H04L1/0618 ,  H04L2001/0093 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/442 ,  Y02D70/444

摘要： Provided are a macro-diversity transmission apparatus and method for providing a broadcast/multicast service using multiple transmitting antennas in a wireless cellular communication system. The apparatus and method apply spatial multiplexing using multiple antennas within a cell and obtain additional diversity among adjacent cells or base stations. Therefore, the signal-to-interference ratio (SIR) and diversity order of signals received by terminals at cell boundaries can be increased. Consequently, cell coverage for a particular data rate can be increased, and transmission power can be reduced. Here, additional diversity applied among cells or base stations includes a method of changing antennas transmitting the same information among cells and a cyclic delay diversity (CDD) method.