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Channel state information sending method, channel state information receiving method and equipment

A technology of channel state information and transmission method, which is applied in the direction of space transmit diversity, radio transmission system, electrical components, etc., and can solve the problem of large resource overhead

Active Publication Date: 2018-11-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] To sum up, for the precoding matrix based on high-precision codebooks, there is a problem of large resource overhead for feedback CSI in the existing technical solutions for feedback CSI

Method used

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  • Channel state information sending method, channel state information receiving method and equipment
  • Channel state information sending method, channel state information receiving method and equipment
  • Channel state information sending method, channel state information receiving method and equipment

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Embodiment Construction

[0166] Embodiments of the present application provide a channel state information sending and receiving method and device, which are used to reduce the resource overhead required for a terminal device to feed back CSI to a network device for a scenario of a high-precision codebook-based precoding matrix. Wherein, the method and the device are based on the same inventive concept. Since the method and the device have similar problem-solving principles, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

[0167] The technical solution provided by the embodiment of the present application is applicable to a wireless communication system applying MIMO technology, such as an LTE system, an NR system, and the like. MIMO technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, so that signals are sent and received through multiple ant...

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Abstract

The invention provides a channel state information sending method, a channel state information receiving method and equipment which are used for reducing the resource cost needed when terminal equipment feeds back CSI to network equipment in the scene of a high precision codebook-based precoding matrix. The method comprises the steps that the terminal equipment determines a precoding matrix W; theterminal equipment sends a signal containing the CSI to the network equipment; the network equipment acquires a RI and indication information according to the signal containing the CSI; the network equipment acquires a PMI2 according to the RI and the indication information; and the network equipment determines the precoding matrix W according to the rank index RI and the second precoding matrixindication PMI2.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a method and device for sending and receiving channel state information. Background technique [0002] Currently, multiple input and multiple output (Multiple Input and Multiple Output, MIMO) technology is widely used in communication systems, such as Long Term Evolution (Long Term Evolution, LTE) systems. MIMO technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, so that signals are sent and received through multiple antennas at the transmitting end and receiving end. MIMO technology can improve communication quality and system channel capacity. [0003] In the MIMO system, precoding (Precoding) technology can be used to improve the quality and rate of signal transmission. The network equipment can estimate the precoding matrix of the downlink channel according to...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/06
CPCH04B7/0456H04B7/0626H04B7/0639H04B7/0632H04B7/0636H04B7/0486H04B7/0413
Inventor 张瑞齐李雪茹张荻
Owner HUAWEI TECH CO LTD
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