公开(公告)号：US09906287B2

公开(公告)日：2018-02-27

申请号：US14766514

申请日：2013-02-14

Applicant: Nokia Solutions and Networks Oy

Inventor： Weidong Yang ,  Roy Yang ,  Yinyan Wang

IPC: H04W4/00 ,  H04B7/08 ,  H04B7/024 ,  H04B7/06 ,  H04W74/00

CPC classification number: H04B7/0811 ,  H04B7/024 ,  H04B7/0632 ,  H04B7/0802 ,  H04W74/006

Abstract: An apparatus and method for antenna selection in uplink coordinated multipoint communications, where a plural number of geographically separated antennas are present, forming a plural number of cells. This apparatus and method relates to selecting a PRACH configuration, sharing information regarding the selected PRACH preamble amongst cells; an user equipment, upon receiving instruction from its serving cell, transmits a PRACH preamble. All cells, including serving cell, detects the selected PRACH preamble in the received PRACH transmission transmitted by the user equipment, determining pathloss information regarding the quality of the detected selected PRACH preamble, and selecting a set of cooperative multipoint antennas from the plural number of antennas based on the determined channel quality information for this user equipment. This apparatus and method is also applicable for antenna selection in the case of a single cell with a plural number of geographically separated antennas.