公开(公告)号：JP2006222970A

公开(公告)日：2006-08-24

申请号：JP2006031880

申请日：2006-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ACHILLES GEORGE KOGIANTIS ,  LEE JUNG A ,  OZAROW LAWRENCE HOWARD

IPC: H04J11/00 ,  H04B7/06 ,  H04B7/12 ,  H04B7/26 ,  H04J99/00

Abstract: PROBLEM TO BE SOLVED: To provide a radio communication system (20) which includes using a plurality of antennas (30, 32) in order to perform simultaneous transmission to a plurality of mobile stations (24, 26). SOLUTION: A distributed multiple antenna scheduling (DMAS) technique includes selecting the plurality of mobile stations which receive at least simultaneous transmission on at least one selected subcarrier from the inside of a carrier bandwidth having orthogonal frequency division multiplexing (OFDM). In a disclosed embodiment, the plurality of mobile stations are selected for each subcarrier in the carrier bandwidth. The embodiment includes grouping the subcarriers into a subset together in order to reduce complicatedness of calculation for determining which mobile station should be selected for the simultaneous transmission. COPYRIGHT: (C)2006,JPO&NCIPI

公开(公告)号：DE602005010199D1

公开(公告)日：2008-11-20

申请号：DE602005010199

申请日：2005-12-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： NIRANJAN SUDHIR JOSHI ,  ACHILLES GEORGE KOGIANTIS ,  ASHOK N RUDRAPATNA ,  GANAPATHY SUBRAMANIAN SUNDARAM

IPC: H04L12/56 ,  H04W24/00 ,  H04W28/02 ,  H04W28/06 ,  H04W72/12

Abstract: A wireless communication system (20) includes a wireless network (30) that selectively modifies an aggregation of voice over internet protocol wireless transmissions. In one example, a mobile station geometry provides an indication whether modification of the aggregation is desirable. For example, a mobile station with a better geometry allows for a higher level of aggregation. Another disclosed example includes determining a current cell load condition and increasing the amount of aggregation and the level of aggregation as cell load conditions increase. Another disclosed technique includes staggering the scheduling of aggregated packets to avoid delays at a scheduler. One or more of the disclosed techniques may be used to efficiently transmit voice over internet protocol communications.