Demodulation reference signal transmission and reception methods in sTTI, base station and user equipment

A technology for demodulating reference signals and transmission methods, which is applied in the field of wireless communication, and can solve problems that affect the quality of downlink data transmission and cannot transmit user equipment-specific reference signals.

Active Publication Date: 2017-05-31
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

When sTTI is used for downlink data transmission, the dedicated reference signal of the user equipment cannot be transmitted, which affects the quality of downlink data transmission

Method used

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  • Demodulation reference signal transmission and reception methods in sTTI, base station and user equipment
  • Demodulation reference signal transmission and reception methods in sTTI, base station and user equipment
  • Demodulation reference signal transmission and reception methods in sTTI, base station and user equipment

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Embodiment Construction

[0067] As mentioned in the background technology, in the prior art, when sTTI is used for downlink data transmission, and sTTI is composed of the previous symbols of a time slot, due to the lack of a corresponding demodulation reference signal (DMRS) transmission scheme, the user equipment Channel estimation cannot be performed, which affects the transmission quality of downlink data.

[0068]In the technical solution in the embodiment of the present invention, when sTTI is used for downlink data transmission, by using resources not occupied by CRS in the sTTI to transmit the demodulation reference signal of the user equipment, the corresponding downlink UE-level dedicated reference signal can be realized. Downlink transmission, avoiding conflicts between resources used by downlink UE-level dedicated reference signals and resources occupied by CRS, and improving the quality of downlink data transmission.

[0069] In order to make the above objects, features and beneficial effe...

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Abstract

The invention relates to demodulation reference signal transmission and reception methods in an sTTI, a base station and user equipment. The transmission method comprises that information of resources not occupied by CRS is obtained in the sTTI; and the resources not occupied by CRS is obtained in the sTTI is used to transmit demodulation reference signals of the user equipment. According to the scheme, special reference signals of the user equipment can be transmitted in the sTTI.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for transmission and reception of a demodulation reference signal in sTTI, a base station and user equipment. Background technique [0002] With the development of communication technology, in more and more application fields, such as online games, virtual reality, industrial inspection, Internet of Vehicles and other fields, the requirements for communication delay are getting higher and higher. Users expect the end-to-end time of communication The delay is getting shorter and shorter. [0003] Currently, The 3rd Generation Partnership Project (The 3 rd The Generation Partnership Project (3GPP) has begun to research and standardize the transmission technology of short transmission time interval (shortened Transmission Time Interval, sTTI) based on Long Term Evolution (LTE), and the main research object is Frequency Division Duplex (FDD). The sT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L27/26H04W72/04
CPCH04L27/2611H04L5/0053H04W72/52
Inventor 徐伟杰
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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