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Sounding reference signal transmission method, network side equipment and user equipment

A technology for detecting reference signals and network-side equipment, which is applied in the field of communication, can solve problems such as lack of MIMO and the lack of good guarantee of orthogonal performance, and achieve the effect of maintaining orthogonal performance, improving multiplexing capacity, and reducing impact

Active Publication Date: 2017-02-22
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] In the prior art, the most direct way to use unused DMRS resources to transmit the DMRS used for the sounding function is to completely multiplex the parameters of the DMRS. However, when the DMRS is used as the sounding function, there is no concept of MIMO layer. On the contrary, it will When it comes to multi-antenna sending sounding, the concept of antenna port
On the other hand, according to the current discussion of using unused DMRS to transmit sounding RS, when SRSs of two users appear on the same resource, they are multiplexed with the demodulated DMRS of PUSCH, and the bandwidths of the three RSs are different. At the same time, there is no way to guarantee the orthogonal performance
Furthermore, according to the existing agreement, when the value of the Cyclic Shift Field is determined, the cyclic shift of the DMRS and the OCC take the first v columns of the above table 1 according to the number v of layers, but when the SRS and DMRS are multiplexed , this correspondence is not necessarily optimal

Method used

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  • Sounding reference signal transmission method, network side equipment and user equipment
  • Sounding reference signal transmission method, network side equipment and user equipment
  • Sounding reference signal transmission method, network side equipment and user equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0080] This embodiment provides a sounding reference signal SRS transmission method, which is used for network side equipment, such as figure 2 As shown, this embodiment includes:

[0081] Step 101: Determine the parameter configuration information for sending the SRS of the UE;

[0082] Step 102: Indicate the determined parameter configuration information to the UE, so that the UE uses unused DMRS resources to transmit SRS according to the parameter configuration information.

[0083] In this embodiment, when the network side equipment multiplexes DMRS for SRS transmission, it configures SRS related parameters, so that when the user equipment multiplexes unused DMRS for SRS transmission, on the one hand, the existing configuration can be used as much as possible , on the other hand, reduce the impact on DMRS as much as possible, improve the multiplexing capacity, and maintain good orthogonal performance.

[0084] Further, the method also includes:

[0085] According to th...

Embodiment 2

[0094] This embodiment also provides a sounding reference signal SRS transmission method for UE, such as image 3 As shown, this embodiment includes:

[0095] Step 201: receiving parameter configuration information indicated by the network side device;

[0096] Step 202: Use unused DMRS resources to transmit SRS according to the parameter configuration information.

[0097]This embodiment multiplexes the DMRS for SRS transmission according to the multiplexing configuration parameters indicated by the network side equipment. On the one hand, the existing configuration can be used as much as possible, and on the other hand, the impact on the DMRS can be reduced as much as possible, and the multiplexing capacity can be improved to maintain a good orthogonal performance.

[0098] Further, the method also includes:

[0099] According to the mapping relationship between CSF and the cyclic shift and orthogonal mask of each layer of DMRS used for PUSCH demodulation, establish the r...

Embodiment 3

[0105] This embodiment also provides a network side device, such as Figure 4 As shown, this embodiment includes:

[0106] A processing module 30, configured to determine parameter configuration information for sending the SRS of the UE;

[0107] The indicating module 31 is configured to indicate the determined parameter configuration information to the UE, so that the UE uses unused DMRS resources to transmit SRS according to the parameter configuration information.

[0108] Further, the network side device also includes:

[0109] The first configuration module is used to establish the cyclic shift between the CSF and the DMRS antenna ports used to transmit the SRS according to the mapping relationship between the CSF and the cyclic shifts and orthogonal masks of the DMRS layers used for PUSCH demodulation. and the mapping relationship between the orthogonal mask.

[0110] Further, the parameter configuration information includes any one or a combination of any of the foll...

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Abstract

The invention provides a sounding reference signal transmission method, network side equipment and user equipment, and belongs to the field of communication. The sounding reference signal transmission method used for the network side equipment comprises the steps that parameter configuration information of the user equipment UE used for transmitting SRS is determined; and the determined parameter configuration information is indicated to the UE so that the UE is enabled to use the unused DMRS resources to transmit the SRS according to the parameter configuration information. According to the technical scheme, the influence on the DMRS can be reduced as much as possible when the unused DMRS are reused for SRS transmission so that the multiplexing capacity can be enhanced and the great orthogonal performance can be maintained.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for transmitting sounding reference signals, network side equipment, and user equipment. Background technique [0002] In order to maintain the competitiveness of 3G (third generation mobile communication technology), the 3GPP (Third Generation Partnership Project) organization passed a 3G long term evolution plan (Long Term Evolution, LTE for short) at the end of 2004. LTE aims to increase data transmission rate, reduce system delay, increase system capacity and coverage, reduce operating costs, and improve service quality. [0003] The LTE single carrier frequency division multiple access (SC-FDMA) uplink supports two types of reference signals: demodulation reference signal (De Modulation RS, DMRS) and sounding reference signal (Sounding RS, SRS). SRS is mainly used for channel quality estimation to facilitate frequency selective scheduling by the base station. On t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/0466H04W72/21H04W72/542H04W72/20H04W72/23
Inventor 胡丽洁童辉
Owner CHINA MOBILE COMM GRP CO LTD
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