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Pilot symbol bearing and processing method and device

A technology of pilot symbols and symbols, applied in the field of pilot symbol bearing

Active Publication Date: 2019-06-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Pilot symbol bearing and processing method and device
  • Pilot symbol bearing and processing method and device
  • Pilot symbol bearing and processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] figure 1 In a Normal CP subframe, a pattern of a group of pilots of the DMRS in one subframe is shown. The base station sends the DMRS at the position bearing the DMRS, and the terminal receives and detects the DMRS at the position bearing the DMRS.

[0151] OFDM symbols carrying DMRS are OFDM symbols {6, 7, 13, 14} in a subframe, where {2, 7} subcarriers of OFDM symbols {6, 7, 13, 14} carry the first DMRS port group, the 12th subcarrier of OFDM symbols {6, 7, 13, 14} carries the second DMRS port group.

[0152] Alternatively, the {7, 12} subcarriers of OFDM symbols {6, 7, 13, 14} carry the first DMRS port group, and the 2nd subcarriers of OFDM symbols {6, 7, 13, 14} carry the second DMRS port group.

[0153] When 1-layer transmission or 1 DMRS port transmission, the resources of the first DMRS port group and the second DMRS port group are used for port 7 transmission. When layer 2 transmission or two DMRS ports are used for transmission, the resources of the first ...

Embodiment 2

[0163] figure 2 In a Normal CP subframe, a pattern of a group of pilots of the DMRS in one subframe is shown. The base station sends the DMRS at the position bearing the DMRS, and the terminal receives and detects the DMRS at the position bearing the DMRS.

[0164] OFDM symbols carrying DMRS can be OFDM symbols {6, 7, 13, 14} in a subframe, where {2, 12} subcarriers of OFDM symbols {6, 7, 13, 14} carry the first DMRS port group, the 7th subcarrier of OFDM symbols {6, 7, 13, 14} carries the second DMRS port group.

[0165] When 1-layer transmission or 1 DMRS port transmission, the resources of the first DMRS port group and the second DMRS port group are used for port 7 transmission. When layer 2 transmission or two DMRS ports are used for transmission, the resources of the first DMRS port group and the second DMRS port group are used for the transmission of ports 7 and 8. When 3 layers of transmission or 3 DMRS ports are used for transmission, the resources of the first DMRS ...

Embodiment 3

[0175] image 3 In a Normal CP subframe, a pattern of a group of pilots of the DMRS in one subframe is shown. The base station sends the DMRS at the position bearing the DMRS, and the terminal receives and detects the DMRS at the position bearing the DMRS.

[0176] OFDM symbols carrying DMRS can be OFDM symbols {6, 7, 13, 14} in a subframe, where {2, 7} subcarriers of OFDM symbols {6, 7, 13, 14} of odd PRBPair carry A DMRS port group, the 12th subcarrier of OFDM symbols {6, 7, 13, 14} carries the second DMRS port group, the 12th subcarrier of OFDM symbols {6, 7, 13, 14} of an even PRB Pair The first DMRS port group is carried, and the {2, 7}th subcarriers of OFDM symbols {6, 7, 13, 14} carry the second DMRS port group.

[0177] When 1-layer transmission or 1 DMRS port transmission, the resources of the first DMRS port group and the second DMRS port group are used for port 7 transmission. When layer 2 transmission or two DMRS ports are used for transmission, the resources of...

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Abstract

The invention discloses a pilot symbol bearing method, comprising: mapping one or more demodulation reference signal DMRS ports to one or more resources; dividing multiple DMRS ports into one or two One or four DMRS port groups, and assign different precoding weights or beamforming weights to different groups of DMRS ports, and multiple DMRS ports in the same DMRS port group use code division multiplexing (CDM) to multiplex the same time audio resources. The invention also discloses a pilot symbol processing method and a device for realizing the aforementioned method. The technical scheme of the present invention reduces the overhead of the DMRS by rationally allocating the carrying position of the DMRS in the OFDM symbol, improves the carrying capacity of effective data, and can ensure the quality of channel demodulation at the receiving end.

Description

technical field [0001] The present invention relates to a pilot symbol bearing technology in a Long Term Evolution (LTE, Long Term Evolution) system, in particular to a pilot symbol bearing and processing method and device. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system Release R8 / R9, in order to measure the quality of the channel and demodulate the received data symbols, a common reference signal (CRS, Common ReferenceSignal), user equipment (UE , User Equipment) can perform channel measurement through CRS, so as to determine that the UE performs cell reselection and handover to the target cell, and performs channel quality measurement in the UE connection state. Link connection failure signaling disconnects. In LTE R10, in order to further improve the average spectrum utilization rate of the cell, the spectrum utilization rate of the cell edge, and the throughput rate of each UE, two reference signals are defined: Channel State ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L5/0053H04B7/0456H04B7/0617H04L27/2613
Inventor 郭森宝孙云锋张文峰张峻峰
Owner ZTE CORP