发明名称 |
INTERFERENCE CANCELLATION METHOD, DATA SENDING METHOD, AND APPARATUSES IN LONG TERM EVOLUTION SYSTEM |
摘要 |
An interference cancellation method, data sending method, apparatus, user equipment and base station in a Long Term Evolution system are disclosed. The interference cancellation method includes: obtaining downlink cell-specific power ratio information of a specific cell; performing channel estimation based on a downlink cell-specific reference signal (CRS) of the specific cell, to obtain a channel estimation matrix of a specific physical channel, signal, or message of the specific cell; compensating the channel estimation matrix by using the downlink cell-specific power ratio information; and canceling, in an original signal that is received from a target cell and is interfered by the specific cell, interference caused by the specific cell in a received signal from a specific physical channel, signal, or message. A technical problem in the prior art that a user equipment cannot effectively cancel interference because power transmission strength of a strong interfering cell cannot be correctly estimated is solved. |
申请公布号 |
US2015078257(A1) |
申请公布日期 |
2015.03.19 |
申请号 |
US201414553349 |
申请日期 |
2014.11.25 |
申请人 |
Huawei Technologies Co., Ltd. |
发明人 |
Wu Tong;Xiao Dengkun;Wei Jingxin |
分类号 |
H04W24/02;H04L25/02;H04L5/00 |
主分类号 |
H04W24/02 |
代理机构 |
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代理人 |
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主权项 |
1. An interference cancellation method in a Long Term Evolution system, the method comprising:
obtaining downlink cell-specific power information of a specific cell, wherein the specific cell is a neighboring cell or a serving cell; performing channel estimation based on a downlink cell-specific reference signal (CRS) of the specific cell, to obtain a channel estimation matrix of a specific physical channel, signal, or message of the specific cell; compensating the channel estimation matrix by using the downlink cell-specific power information of the specific cell, to obtain a new channel estimation matrix; reconstructing a received signal from the specific physical channel, signal, or message of the specific cell according to the new channel estimation matrix; and canceling, in an original signal received from a target cell, interference caused by the specific cell, which is not the target cell, in a received signal from a specific physical channel, signal, or message, wherein the target cell is a serving cell or a neighboring cell. |
地址 |
Shenzhen CN |