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A method and device for processing channel quality information

An information processing method and technology for channel quality information, applied in wireless communication, diversity/multi-antenna systems, transmission monitoring, etc., can solve problems such as channel mismatch, affecting terminal demodulation performance, etc., to ensure demodulation performance and improve network. The effect of capacity

Active Publication Date: 2022-03-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the FDD system, in the Massive MIMO technology strategy, since there are multiple prefabricated beams in the cell, and the terminal has only one active prefabricated beam at a specific moment, in this way, for users of transmission mode 9 (TM9, Transmission Mode 9) , which will cause the base station to send data to the terminal (that is, the activated prefabricated beam) may be different from the beam that sends the cell reference signal (such as multiple prefabricated beams in the cell), which will directly lead to the estimated downlink channel quality of the terminal such as channel state information ( CSI, Channel State Information) does not match the actual data transmission channel, thus affecting the demodulation performance of the terminal

Method used

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  • A method and device for processing channel quality information
  • A method and device for processing channel quality information

Examples

Experimental program
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Effect test

no. 1 example

[0077] In the first embodiment, it is assumed that the cell is divided into 7 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-6.

[0078] On the one hand, the CSI-RS sending subframe is calculated according to the configured sending parameters for sending the CSI-RS, wherein the configuration parameters of the CSI-RS include: sending period I CSI-RS and the offset Δ within the period CSI-RS .

[0079] In the first embodiment, it is assumed that I CSI-RS The value is 5, Δ CSI-RS The value is 1, and the calculation can be obtained: the wireless frame number (FrameNo CSI-RS ) is 0, the subframe number (SubFrameNo CSI-RS ) is 1 when the CSI-RS signal is sent, and the next time the CSI-RS signal is sent is that the radio frame number is 0, and the subframe number is 6, and so on, every 1 CSI-RS The CSI-RS signal is sent at a period such as 5ms.

[0080] In the first embodiment, the number of prefabricated beams BF NUM is 7 beams, n...

no. 2 example

[0089] In the second embodiment, it is assumed that the cell is divided into 7 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-6.

[0090] On the one hand, the CSI-RS sending subframe is calculated according to the configured sending parameters for sending the CSI-RS, wherein the configuration parameters of the CSI-RS include: a sending period I CSI-RS and the offset Δ within the period CSI-RS .

[0091] In the second embodiment, it is assumed that I CSI-RS The value is 10, Δ CSI-RS If the value is 2, it is calculated that the CSI-RS signal is sent when the radio frame number is 0 and the subframe number is 2, and the next time the CSI-RS signal is sent is when the radio frame number is 1 and the subframe number is 2, and so on. every I CSI-RS The CSI-RS signal is sent at a period such as 10ms.

[0092] In the second embodiment, the number of prefabricated beams BF NUM is 7 beams, numbered 0-6, and the CSI-RS signals are corres...

no. 3 example

[0099] In the third embodiment, it is assumed that the cell is divided into 11 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-10.

[0100] On the one hand, the CSI-RS sending subframe is calculated according to the configured sending parameters for sending the CSI-RS, wherein the configuration parameters of the CSI-RS include: a sending period I CSI-RS and the offset Δ within the period CSI-RS .

[0101] In the third embodiment, it is assumed that I CSI-RS The value is 5, Δ CSI-RS If the value is 1, it is calculated that: when the radio frame number is 0, and the subframe number is 1, the CSI-RS signal is sent, and the next time the CSI-RS signal is sent is when the radio frame number is 0, and the subframe number is 6, and so on. every I CSI-RS The CSI-RS signal is sent at a period such as 5ms.

[0102] In the third embodiment, the number of prefabricated beams BF NUM is 11 beams, numbered 0-10. In this embodiment, the CSI-RS...

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Abstract

The present application discloses a method and device for processing channel quality information, including: determining the beam set periodically sent on the prefabricated beam by channel quality reference information according to the configured transmission parameters; determining the active prefabricated beam of the terminal; Select the same beam as the active prefabricated beam as the beam for reporting channel quality information. The embodiment of the present application ensures the demodulation performance of the terminal, thereby improving the network capacity.

Description

technical field [0001] The present application relates to, but is not limited to, wireless communication technologies, and in particular, to a method and apparatus for processing channel quality information. Background technique [0002] With the continuous development of the fourth generation (4G) mobile communication system, Massive MIMO (Massive MIMO) technology will become an important technology for improving network capacity. [0003] In the frequency division duplex (FDD, Frequency Divided Duplex) system, the departure angle (DOA, Departure Of Angle) of the uplink and downlink channels is reciprocal. In Massive MIMO technology, the base station divides the cell into multiple prefabricated beam coverages according to the DOA range, and selects and activates the prefabricated beams for the terminal from the divided prefabricated beams according to a certain strategy. In this way, the base station can activate the prefabricated beams to the terminal. send data. Termina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/06H04B17/309
CPCH04B17/309H04B7/0413H04B7/0626H04B7/06H04W72/04
Inventor 戚丽丽王俊玲
Owner ZTE CORP
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