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Demodulated reference signal DMRS port indication method, device and base station

A technology for demodulating reference signals and indicating devices, which is applied in the directions of pilot signal allocation, wireless communication, transmission path sub-channel allocation, etc., and can solve the problem of high bit overhead of DMRS port indication information, etc.

Active Publication Date: 2016-11-23
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0021] In order to solve the above technical problems, the present invention provides a demodulation reference signal DMRS port indication method, device and base station, which solves the problem of large bit overhead of DMRS port indication information in the maximum support of 8-layer transmission

Method used

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  • Demodulated reference signal DMRS port indication method, device and base station
  • Demodulated reference signal DMRS port indication method, device and base station
  • Demodulated reference signal DMRS port indication method, device and base station

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Embodiment

[0088] In the current DMRS technical solution that supports a maximum of 8 layers, considering the possibility that multiple users (MU, multi user) may occupy a total of 24REs, while a single user (SU, Single user) only occupies 12REs, the user needs to configure the other 12REs Punching is used for rate matching, that is, for the current user, the other 12RE positions do not send any data, and the UE knows that this position is empty when receiving data. Then, the DMRS port indication information may be included in the DCI message, and it is necessary to add the information of the total number of layers (whether it is >4 layers) while indicating the user's layer number. In the prior art, the direct solution is to use the list of all cases that the SU / MU supports up to 8 layers as the DMRS port indication table, as shown in Table 3, in the case of single-codeword transmission or double-codeword transmission, both define If 16 kinds of value indications are specified, then 4 bi...

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Abstract

The invention discloses a demodulated reference signal DMRS port indication method, device and base station. A provided DMRS port indication table contains all cases for maximally supporting 8-layer transmission; in combination with existing standard single-codon transmission and double-codon transmission conditions, all the cases in the DMRS port indication table are indicated through 4 bits defined by DMRS port indication information; and thus, the bit overhead of the DMRS port indication information can be reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method, a device and a base station for indicating a demodulation reference signal DMRS port. Background technique [0002] Existing communication systems, such as LTE (Long Term Evolution, long-term evolution), WiMax (Worldwide Interoperability for Microwave Access, global microwave interconnection access), 802.11n, all adopt the traditional 2D MIMO (Multiple-IZPut Multiple-Output , multiple input multiple output) technology, its basic principle is to improve the transmission quality and system capacity through the two-dimensional spatial freedom on the horizontal plane. With the development of antenna design architecture, in order to improve the transmission efficiency of mobile communication systems and enhance user experience, it is necessary to fully exploit the degree of freedom in vertical space, extend the traditional 2D MIMO technology to 3D MIMO technology, and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L1/18
CPCH04L1/18H04B7/0452H04W92/00H04W72/23H04L5/0026H04L5/0044H04L5/0064H04L5/0091H04B7/0417H04L5/0048H04B7/04H04W88/02H04W88/08
Inventor 金婧童辉王启星王飞沈晓冬
Owner CHINA MOBILE COMM GRP CO LTD
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