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LTE channel measurement and feedback method

A technology for channel measurement and measurement information, applied in the field of LTE channel measurement and feedback, can solve the problem of large amount of calculation of the terminal, and achieve the effect of reducing the amount of calculation, the workload of calculation, and the requirements.

Inactive Publication Date: 2012-07-04
沈阳市联盛科技有限公司
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Problems solved by technology

[0018] The present invention provides an LTE channel measurement and feedback method, which solves the problem of coexistence of various measurement assumptions and large calculation load of the terminal in the prior art

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  • LTE channel measurement and feedback method

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] figure 2 It is a flow chart of a LTE channel measurement and feedback method in the present invention, such as figure 2 as shown,

[0060] Step 201: Step 1: The base station configures channel state information measurement pilot CSI-RS resources for each signal transmission point in a CoMP, and sends the configuration information of the CSI-RS resources to the terminal;

[0061] Step 202: According to the configuration information of the CSI-RS resource, the terminal performs a channel measurement operation on each signal transmission point in the CoMP, sorts according to the obtained signal-to-noise ratio; transmits the signal whose signal-to-noise ratio meets the preset condition point feedback to the base station;

[006...

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Abstract

The invention discloses an LTE (Long Term Evolution) channel measurement and feedback method suitable for the CoMP (Coordinated Multi-Point) working mode. A base station configures CSI-RS resources for signal transmission points in the CoMP; a terminal performs channel measurement on the signal transmission points according to the CSI-RS resources, and feed the signal transmission points of which the signal-to-noise ratio satisfies the preset condition back to the base station; the base station selects the signal transmission points according to the feedback information of the terminal and the given working information of the base station side, and sets one or more measurement assumptions and corresponding CSI-RS resources; the terminal performs further channel measurement and feeds back the measurement information according to the measurement assumptions and the corresponding CSI-RS resources; and if the measurement information fed back by the terminal can not determine the resource dispatching mode, the terminal repeatedly performs measurement and feedback till the base station can determine the resource dispatching mode for resource dispatching. The method provided by the invention solves the problem in the prior art that the terminal has large calculated amount due to coexistence of various measurement assumptions.

Description

technical field [0001] The present invention relates to the field, in particular to an LTE channel measurement and feedback method. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) project is an evolution of 3G, which improves and enhances the air access technology of 3G. Using OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Out-put) as the only standards for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. It improves the performance of cell edge users, increases cell capacity, and reduces system delay. [0003] In Rel 11, coordinated multi-point (CoMP, Coordinated multi-point) is a MIMO technology, through the cooperation of multiple signal transmission points, the original interference signal is changed into a signal that can help improve performance. As a branch of MIMO technology, CoMP has similarities with oth...

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Application Information

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IPC IPC(8): H04L1/00H04L5/00H04W72/04
Inventor 仲川卫瑞平周琳商志平常永宏
Owner 沈阳市联盛科技有限公司
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