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Method for measuring channels for assisting multi-dimensional antenna arrays

An antenna array and channel quality indicator technology, applied in the field of channel measurement of multi-dimensional antenna arrays, can solve the problem of deviation of channel state information from actual values, and achieve the effects of reducing measurement feedback overhead, improving system performance, and improving channel measurement accuracy

Active Publication Date: 2013-07-17
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

It may also cause the channel state information recovered by the base station to deviate from the actual value

Method used

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  • Method for measuring channels for assisting multi-dimensional antenna arrays
  • Method for measuring channels for assisting multi-dimensional antenna arrays
  • Method for measuring channels for assisting multi-dimensional antenna arrays

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] An embodiment of the present invention relates to a method for assisting channel measurement of a multi-dimensional antenna array in a user equipment of a wireless communication system, comprising the following steps: determining channel state information of a complete channel; determining a first channel state information according to the channel state information Precoding matrix indication; determining a second precoding matrix indication according to the channel state information and the determined first precoding matrix indication; sending the determined first and second precoding matrix indications to the base station to feed back the channel state A measurement result of information; wherein, the result of the cross product of the codeword indicated by the second precoding matrix and the codeword indicated by the first precoding mat...

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Abstract

The invention relates to a method for measuring channels for assisting multi-dimensional antenna arrays in a user device of a wireless communication system. The method includes the following steps of confirming channel state information of an integral channel; conforming first precoding matrix instructions according to the channel state information; confirming second precoding matrix instructions according to the channel state information and the confirmed first precoding matrix instructions; and transmitting the confirmed first precoding matrix instructions and confirmed second precoding matrix instructions to a base station to feed back the measuring results of the channel state information, wherein the multiplication cross results of the code words pointed by the second precoding matrix instructions and the code words pointed by the first precoding matrix instructions correspond to principal direction information of the integral channel. By adopting the method for measuring the channels for assisting the multi-dimensional antenna arrays, the base station can recover accurate channel quality relative information.

Description

technical field [0001] The present invention relates to wireless communications, and more particularly to methods for channel measurement of multi-dimensional antenna arrays. Background technique [0002] Currently, the standards and systems of the Long Term Evolution (LTE) / Long Term Evolution Advanced (LTE-A) of the Third Generation Partnership Project (3GPP) (for example, the LTE-A R10 system) usually target one-dimensional antenna arrays (such as uniform linear array ) to define and design. In such standards and systems, usually only the azimuth angles of departure and arrival of antenna signals on the horizontal plane are considered. In other words, in existing solutions, the design of system channel measurement and feedback is only based on the assumption of a single-dimensional antenna array, and only the horizontal signal propagation directivity is taken into consideration. [0003] However, in a practical application environment, antenna signals propagate in space ...

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Application Information

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IPC IPC(8): H04B7/06
Inventor 熊芝兰杨红卫武露
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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