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Method, device and system for processing channel state information (CSI)

A technology of channel state information and processing methods, which is applied in transmission systems, digital transmission systems, wireless communications, etc., and can solve the problem of low accuracy of transmission power CSI

Active Publication Date: 2011-11-23
ZTE CORP
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  • Description
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  • Application Information

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Problems solved by technology

[0026] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the UE cannot adapt to the large difference in the transmission power of different transmission nodes and the low CSI accuracy rate

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  • Method, device and system for processing channel state information (CSI)
  • Method, device and system for processing channel state information (CSI)
  • Method, device and system for processing channel state information (CSI)

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Embodiment Construction

[0077] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.

[0078] First of all, if there is no conflict, the embodiment of the present invention and the combination of various features in the embodiment on the premise of no conflict are within the protection scope of the present invention. In addition, the steps shown in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, the sequence may be different. The steps shown or described are performed in the order herein.

[0079] Embodiments of the present invention provide a CSI processing method, such as figure 1 As shown, it mainly i...

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Abstract

The invention discloses a method, device and system for processing channel state information (CSI), which are used for overcoming the defect of lower CSI accuracy since UE (User Equipment) cannot adapt to large difference of transmitting power among different transmitting nodes in the prior art. The method is applied to a UE side, and comprises the following steps of: receiving a high-level configuration signaling, wherein the high-level configuration signaling comprises multiple pieces of power information corresponding to a channel state information-reference symbol (CSI-RS) port subset; performing channel measurement by using the CSI-RS to obtain a measuring result; and determining CSI by using the measuring result and the power information, and reporting the CSI. According to the embodiment of the invention, the problem of lower CSI accuracy since the UE cannot adapt to large difference of transmitting power among different transmitting nodes in the prior art is solved, and reduction in the system performance under the influence of the problem is avoided.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method, device and system for processing channel state information (Channel State Information, CSI for short) in a distributed antenna system or a cooperative transmission system. Background technique [0002] In the wireless communication technology, when the base station side (for example, an evolved Node B, namely eNodeB, eNB for short) uses multiple antennas to transmit data, a spatial multiplexing method may be adopted to increase the data transmission rate. That is, the same time-frequency resources are used at the sending end to transmit different data at different antenna positions, and the receiving end (for example, user equipment UE) also uses multiple antennas to receive data. [0003] In the case of a single user, the resources of all antennas are allocated to the same user, and this user exclusively occupies the physical resources allocated to the base station s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06H04W24/10
CPCH04L1/06H04L1/0026H04W24/10H04L1/00
Inventor 陈艺戬徐俊
Owner ZTE CORP
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