Reference signal mapping method and device

A technology of reference signal and mapping method, which is applied in the directions of pilot signal allocation, separation device of transmission path, wireless communication, etc., and can solve problems such as inability to support CSI-RS

Active Publication Date: 2017-02-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] like Figure 1a , Figure 1b and Figure 1c As shown, the current LTE system can be configured as 2 ports, 4 ports or 8 ports for CSI-RS, and cannot support CSI-RS with more antenna ports

Method used

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  • Reference signal mapping method and device
  • Reference signal mapping method and device
  • Reference signal mapping method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 describes a scheme of obtaining a 12-port signal reference pattern according to a 4-port reference signal pattern and an 8-port reference signal pattern.

[0062] Figure 3a A 12-port reference signal pattern is shown. It should be noted, Figure 3a Only one possible 12-port reference signal pattern is shown, and other 12-port reference signal patterns can also be obtained based on the distribution law of the aforementioned 12-port reference signal patterns, which will not be listed here.

[0063] Figure 3a In , for convenience of description, each grid represents one RE, and the position of one RE can be represented by coordinates (x, y), where x represents a symbol number, and y represents a subcarrier number. The numerical value in each square indicates the port number.

[0064] Such as Figure 3a As shown in the figure, three groups of 12-port CSI-RS patterns are shown in the figure, where:

[0065] The REs to which the first group of CSI-RSs are...

Embodiment 2

[0082] Embodiment 2 describes a scheme of obtaining a 12-port reference signal pattern according to an 8-port reference signal pattern.

[0083] Figure 4a A 12-port reference signal pattern is shown. It should be noted, Figure 4a Only one possible 12-port reference signal pattern is shown, and other 12-port reference signal patterns can also be obtained based on the distribution rules of the 12-port reference signal patterns described in the foregoing embodiments, which will not be listed here.

[0084] Figure 4a In , for convenience of description, each grid represents one RE, and the position of one RE can be represented by coordinates (x, y), where x represents a symbol number, and y represents a subcarrier number. The numerical value in each square indicates the port number.

[0085] Such as Figure 4a As shown, the figure shows four groups of 12-port CSI-RS patterns, wherein the patterns of the first group of CSI-RS and the second group of CSI-RS conform to the la...

Embodiment 3

[0103] Embodiment 3 describes another solution for obtaining a 12-port reference signal pattern according to an 8-port reference signal pattern.

[0104] Figure 5a A 12-port reference signal pattern is shown. It should be noted, Figure 5a Only one possible 12-port reference signal pattern is shown, and other 12-port reference signal patterns can also be obtained based on the distribution law of the aforementioned 12-port reference signal patterns, which will not be listed here.

[0105] Figure 5a In , for convenience of description, each grid represents one RE, and the position of one RE can be represented by coordinates (x, y), where x represents a symbol number, and y represents a subcarrier number. The numerical value in each square indicates the port number.

[0106] Such as Figure 5a As shown, the figure shows four groups of 12-port CSI-RS patterns, and these four groups of CSI-RS can be distributed according to the sixth distribution in the aforementioned 12-por...

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Abstract

The present invention provides a reference signal mapping method and device. The method comprises the steps of determining the RE positions where the channel state indication reference signals (CSI-RS) are mapped according to N-port reference signal patterns, and carrying out the resource mapping on the CSI-RS according to the determined RE positions, wherein N is equal to 12 or 16, and the RE positions wherein the CSI-RS are mapped in the N-port reference signal patterns are determined according to the RE positions wherein the CSI-RS are mapped in one or more of the 2-port reference signal patterns, the 4-port reference signal patterns and the 8-port reference signal patterns. According to the present invention, the 12-port or 16-port CSI-RS mapping can be realized, and further, the12-port or 16-port CSI-RS transmission is realized.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a reference signal mapping method and device. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) system of the Rel-10 version, five kinds of reference signals are defined in the downlink, namely: cell-specific reference signal (Cell-specific Reference Signal, C-RS), user-specific reference signal (UE -specific reference signal, referred to as UE-RS, also known as DM-RS, English is Demodulation-Reference Signal, that is, demodulation reference signal), MBSFN (Multimedia Broadcast multicast service Single Frequency Network, multicast / multicast single frequency network) A reference signal, a position reference signal (Positioning-Reference Signal, P-RS) and a channel state information reference signal (Channel State Indication Reference Signal, CSI-RS). Among them, CSI-RS is used for downlink channel measurement and estimation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06
CPCH04L1/0693H04L5/0007H04L5/005H04L5/0082H04W72/04H04L5/0094H04L5/0048H04L5/0053
Inventor 拉盖施高秋彬陈润华陈文洪李辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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