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A reference signal setting method in a mobile communication system

A technology of reference signal and local reference signal, which is applied in the field of solutions involving reference signal design in the field of mobile technology, and can solve problems such as reducing transmission efficiency

Active Publication Date: 2019-05-31
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Assuming that Massive MIMO uses the same DMRS overhead to support 20 UE multi-user transmission at the same time, DMRS accounts for 71.4% of all available resources, and considering the overhead of control signaling, a small proportion of REs are left for data transmission, which greatly reduces transmission efficiency

Method used

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  • A reference signal setting method in a mobile communication system
  • A reference signal setting method in a mobile communication system
  • A reference signal setting method in a mobile communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 is a schematic diagram of mapping downlink reference signals to REs used for DMRS in the LTE system, as shown in the attached figure 2 shown.

[0064] Base station equipment maps 16 sets of reference signals Up to 16 groups of physical resources on, where map to 1≤k≤16, Occupies one RE, a total of 16 REs are attached figure 2 shown in the first area. The base station equipment maps 16 groups of reference signals in a space division multiplexing manner to physical resource R 2 on, where map to R 2 , 1≤k≤16. The R 2 as attached figure 2 shown in the second area of ​​. The base station equipment maps the group data D in a space division multiplexing manner 1 ,...,D 16 to physical resource R 3 on, where D k map to R 3 , 1≤k≤16. The R 3 as attached figure 2 shown in the blank RE. The base station equipment sends on the downlink PRB pair, D. 1 ,...,D 16 . in, D. k undergoes the same precoding process.

[0065] attached ...

Embodiment 2

[0067] Embodiment 2 is a schematic diagram of mapping part of downlink reference signals to non-DMRS REs in the LTE system, as shown in the attached image 3 shown. The difference between Embodiment 2 and Embodiment 1 lies in the setting of the first area. In Embodiment 2, the 16 REs in the first area include 8 REs for DMRS and 8 REs for non-DMRS, and the second area is the same as in Embodiment 1. Compared with Embodiment 1, the first region in Embodiment 2 is closer to the center of the frequency domain, so it can be closer to the average value of the channel information of the entire PRB pair.

Embodiment 3

[0069] Embodiment 3 is a structural block diagram of a processing device used in a base station (eNB), as shown in the attached Figure 4 shown. attached Figure 4 Among them, the eNB device 300 is composed of a mapping device 301 , a mapping device 302 , a mapping device 303 , and a sending device 304 . Wherein the mapping device 301 maps K sets of reference signals to group K physical resources on, where map to ; The mapping device 302 maps K groups of reference signals in a space-division multiplexing manner to physical resource R 2 on, where map to R 2 ; Mapping device 303 maps group data D in a space-division multiplexing manner 1 ,...,D K to physical resource R 3 on, where D k map to R 3 ; The sending device 304 sends data on the downlink resource block, and the downlink resource block includes at least physical resources R 2 , R 3 . in, After the same precoding process, the signals before precoding are K is an integer greater than 1, and k is ...

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Abstract

A reference signal setting method in a mobile communication system is provided. The present invention presents a solution for space division multiplexing demodulation reference signals in a massive MIMO network. In one embodiment, a RE for demodulating reference signals of an LTE system is divided into two parts, one for transmitting demodulation reference signals which are not space-division-multiplexed, and the other one for transmitting demodulation reference signals in a space division multiplexing manner. The technical solution provided in the present invention solves the problem that the cost for demodulating reference signals in the massive MIMO is too high, and meanwhile maintains the compatibility with existing systems as best as possible.

Description

technical field [0001] The present invention relates to a reference signal design scheme in the technical field of mobile communication, in particular to a downlink demodulation reference signal (DMRS-Demodulation) in a mobile communication system using Massive MIMO-Massive Multiple Input Multiple Output Reference Signal) scheme. Background technique [0002] In the traditional 3rd Generation Partnership Project (3GPP–3rd Generation Partner Project) Long Term Evolution (LTE-Long Term Evolution) system, three downlink reference signals are defined: [0003] ●Cell specific reference signal (CRS-Cell specific Reference Signal) [0004] ●DMRS [0005] ●Channel State Indication Reference Signal (CSI-RS: CSI Reference Signal) [0006] The above CRS and DMRS are used for data demodulation, and the CSI-RS is used for channel information monitoring. attached figure 1 It is a CSI-RS pattern based on the normal cyclic prefix (Normal CP-Normal Cyclic Prefix) in an existing LTE cell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L1/00
CPCH04L1/0631H04L1/0675
Inventor 石绯
Owner HONOR DEVICE CO LTD
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