公开(公告)号：US20180138994A1

公开(公告)日：2018-05-17

申请号：US15869863

申请日：2018-01-12

Applicant: APPLE INC.

Inventor： Jianming WU ,  Wen TONG ,  Peiying ZHU

IPC: H04L27/26 ,  H04L5/02 ,  H04L1/00 ,  H04W24/08 ,  H04W24/02 ,  H04L1/20 ,  H04L1/06

CPC classification number: H04B17/336 ,  H04B17/26 ,  H04B17/309 ,  H04B17/345 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0643 ,  H04L1/20 ,  H04L5/023 ,  H04L27/2647 ,  H04W24/02 ,  H04W24/08

Abstract: A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain.

公开(公告)号：US20160043816A1

公开(公告)日：2016-02-11

申请号：US14923090

申请日：2015-10-26

Applicant: APPLE INC.

Inventor： Jianming WU ,  Wen TONG ,  Peiying ZHU

IPC: H04B17/336 ,  H04L1/00 ,  H04W24/08

CPC classification number: H04B17/336 ,  H04B17/26 ,  H04B17/309 ,  H04B17/345 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0643 ,  H04L1/20 ,  H04L5/023 ,  H04L27/2647 ,  H04W24/02 ,  H04W24/08

Abstract: A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain.