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Information processing method and device

An information processing method and a technology for channel state information, which are applied in the field of communication and can solve problems such as estimation errors and different phase changes.

Active Publication Date: 2018-07-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is phase noise at the transmitter or receiver, it will lead to different phase changes on different OFDM symbols, and the CSI-RS ports on different OFDM symbols will experience different channel characteristics, and estimation errors will occur when estimating the complete channel

Method used

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  • Information processing method and device
  • Information processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] like figure 2 As shown, the information processing method in Embodiment 1 of the present invention is applied to the sending end, including:

[0091] Step 101. Send pilot signals of N ports to a receiving end, where the pilot signals of N ports are distributed on M OFDM symbols.

[0092] Wherein, the pilot signal includes a channel state information reference signal CSI-RS.

[0093] Step 102, sending phase tracking pilot signals of S ports to the receiving end, so that the receiving end is based on the pilot signals of the N ports, the phase tracking pilot signals of the S ports, and the receiving end The terminal performs phase compensation according to the port correspondence obtained in a predetermined manner and determines the channel state information.

[0094] Wherein, the phase tracking pilot signal includes a phase tracking reference signal or a channel state information reference signal CSI-RS.

[0095] Wherein, in the phase tracking pilot signals of the S ...

Embodiment 2

[0102] like image 3 As shown, the information processing method in Embodiment 2 of the present invention is applied to the receiving end, including:

[0103] Step 201. Receive pilot signals of N ports sent by a transmitting end, where the pilot signals of N ports are distributed on M OFDM symbols.

[0104] Step 202. Receive phase tracking pilot signals of S ports sent by the sending end.

[0105] Step 203, obtaining port correspondence.

[0106] Wherein, in this step, the notification signaling sent by the sending end may be received, and the corresponding relationship is acquired according to the notification signaling, wherein the corresponding relationship is included in the notification signaling; The corresponding relationship pre-agreed by the sending end.

[0107] The notification signaling may be high-level signaling, or any dynamic control signaling.

[0108]Wherein, in the phase tracking pilot signals of the S ports, the phase tracking pilot signals of each port...

Embodiment 3

[0123] In this embodiment, it is assumed that the antenna array at the transmitting end has Figure 4 For the 32 antenna ports shown, the antenna port numbers are given in the figure, and all antenna ports have the same phase noise.

[0124] like Figure 5 As shown, the information processing method in Embodiment 3 of the present invention includes:

[0125] Step 301, the sending end sends N (N=32) port CSI-RS.

[0126] Wherein, each CSI-RS is transmitted on the antenna port having the same number as it. The 32-port CSI-RS is distributed on M=4 OFDM symbols in a time unit (subframe), such as Image 6 As shown (assuming a PRB (physical resource block physical resource block) bandwidth), wherein ports 0 to 7 are distributed on OFDM symbol 4, ports 8 to 15 are distributed on OFDM symbol 5, and ports 16 to 23 are distributed on OFDM symbol 6. Ports 24-31 are distributed on OFDM symbol 7.

[0127] Step 302, the sending end sends the phase tracking pilot signal of the S (S=1) p...

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PUM

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Abstract

The invention provides an information processing method and an information processing device, and relates to the technical field of communication, used for accurately computing channel state information when a sending terminal or a receiving terminal has phase noise. The information processing method provided by the invention comprises the steps of sending pilot frequency signals of N ports to thereceiving terminal, wherein the pilot frequency signals of the N ports are distributed on M orthogonal frequency division multiplexing (OFDM) symbols; and sending phase tracking pilot frequency signals of the S ports to the receiving terminal, thus allowing the receiving terminal to perform phase compensation and determine the channel state information according to the pilot frequency signals ofthe N ports, the phase tracking pilot frequency signals of the S ports and a port corresponding relation acquired by the receiving terminal according to a predetermined mode.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an information processing method and device. Background technique [0002] A measurement pilot (CSI-RS, channel state information reference signal) is introduced into the LTE (Long Term Evolution, long term evolution) system of the Rel-10 version. The channel state information reference signal is used to measure channel information. When the transmitting end uses a large-scale antenna, it usually has multiple antenna ports. In order to measure the channel characteristics on each antenna port, it is necessary to configure CSI-RS of multiple ports for the receiving end to perform channel measurement. [0003] The measurement pilot can be configured as 2 ports or 4 ports or 8 ports. Due to the expansion of the antenna scale, in the Rel-13 version of the LTE system, 12-port and 16-port measurement pilots are introduced, and 20, 24, 28, and 32-port pilots are further ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L27/38
CPCH04L27/2695H04L27/3872
Inventor 李辉高秋彬塔玛拉卡·拉盖施苏昕陈润华李传军黄秋萍王蒙军
Owner DATANG MOBILE COMM EQUIP CO LTD