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Method for determining demodulation reference signal DMRS port and related product

A technology for demodulating reference signals and determining methods, which is applied in the field of electronic equipment and can solve problems such as transmission interference

Active Publication Date: 2020-02-28
SPREADTRUM SEMICON (NANJING) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Currently, in the fifth-generation mobile communication technology (5th-Generation, 5G) new air interface (New Radio, NR), when the downlink control signaling (Downlink control information, DCI) is in DCI1_0 format, the default physical downlink shared channel ( The demodulation reference signal (Demodulation Reference Sgnal, DMRS) port in the Physical Downlink Shared Channel (PDSCH) is port 1000. In the scenario of multi-transmission and reception point (multi-TRP) transmission, if the standard Rel The way in -15 version, that is, the default port of the DMRS scheduled by multiple DCI instructions is port 1000, and the DMRS in the PDSCH sent by different TRPs are all in the same code division multiplexing group (Code Division Multiplexing group, CDM group ), that is to say, multiple network devices send data to the terminal through port 1000, which will cause the downlink information to equally divide the frequency domain resources, resulting in transmission interference

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  • Method for determining demodulation reference signal DMRS port and related product
  • Method for determining demodulation reference signal DMRS port and related product
  • Method for determining demodulation reference signal DMRS port and related product

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0035]The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (...

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Abstract

The embodiment of the invention discloses a method for determining a demodulation reference signal DMRS port and a related product. The method comprises the following steps: receiving a high-level preset parameter set sent by at least one TRP in a plurality of transmitting and receiving points TRP; according to the at least one high-level preset parameter set, determining DMRS ports associated when the plurality of TRPs send physical downlink shared channel (PDSCH) data, and the DMRS ports and a code division multiplexing group CDM group are in a one-to-one correspondence relationship; and receiving PDSCH (Physical Downlink Shared Channel) data sent by the corresponding TRP at each DMRS port. According to the embodiment of the invention, the DMRS port used by each TRP transmission is effectively prevented from coming from the same code division multiplexing group CDM group, the utilization rate of downlink information on frequency domain resources is improved, and the TRP transmissioninterference is reduced.

Description

technical field [0001] The present application relates to the technical field of electronic equipment, in particular to a method for determining a demodulation reference signal DMRS port and related products. Background technique [0002] Currently, in the fifth-generation mobile communication technology (5th-Generation, 5G) new air interface (New Radio, NR), when the downlink control signaling (Downlink control information, DCI) is in DCI1_0 format, the default physical downlink shared channel ( The demodulation reference signal (Demodulation Reference Sgnal, DMRS) port in the Physical Downlink Shared Channel (PDSCH) is port 1000. In the scenario of multi-transmission and reception point (multi-TRP) transmission, if the standard Rel The way in -15 version, that is, the default port of the DMRS scheduled by multiple DCI instructions is port 1000, and the DMRS in the PDSCH sent by different TRPs are all in the same code division multiplexing group (Code Division Multiplexing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/0062
Inventor 王钰华王化磊
Owner SPREADTRUM SEMICON (NANJING) CO LTD
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