Invention Grant
- Patent Title: OFDM system with reverse link interference estimation
- Patent Title (中): OFDM系统具有反向链路干扰估计
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Application No.: US13848317Application Date: 2013-03-21
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Publication No.: US09173114B2Publication Date: 2015-10-27
- Inventor: Jianming Wu , Wen Tong , Peiying Zhu
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Fay Kaplun & Marcin, LLP
- Main IPC: H04K1/10
- IPC: H04K1/10 ; H04L27/28 ; H04W24/02 ; H04L1/20 ; H04L5/02 ; H04L27/26 ; H04B17/309 ; H04B17/382 ; H04L1/00 ; H04L1/06 ; H04B17/26 ; H04B17/336 ; H04B17/345

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.
Public/Granted literature
- US20130265897A1 OFDM System with Reverse Link Interference Estimation Public/Granted day:2013-10-10
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