发明名称 |
Interference cancellation for wireless communications |
摘要 |
Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation. |
申请公布号 |
US9055545(B2) |
申请公布日期 |
2015.06.09 |
申请号 |
US201314076095 |
申请日期 |
2013.11.08 |
申请人 |
QUALCOMM Incorporated |
发明人 |
Black Peter J.;Lott Christopher G.;Attar Rashid A.;Jou Yu-Cheun;Ma Jun |
分类号 |
H04W36/18;H04W52/54;H04B1/7107;H04L1/00;H04L25/03;H04W52/12;H04W52/08;H04W52/36;H04W52/40 |
主分类号 |
H04W36/18 |
代理机构 |
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代理人 |
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主权项 |
1. A method for processing a power control command for an access terminal in soft handoff, the method comprising:
receiving power control commands from each base station of a plurality of base stations communicating with the access terminal in soft handoff, wherein each power control command corresponds to a first power control group in a frame of multiple power control groups, and wherein at least one base station of the plurality of base stations transmits a power control command in response to decoding the frame; and decreasing a transmit power of the access terminal in response to at least one of the power control commands instructing the access terminal to decrease the transmit power. |
地址 |
San Diego CA US |