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Determination method of demodulation reference signal dmrs port and related products

A technology for demodulating reference signals and determining methods, applied in the field of electronic equipment, can solve problems such as transmission interference, and achieve the effects of reducing network transmission interference and improving utilization.

Active Publication Date: 2022-05-13
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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  • Determination method of demodulation reference signal dmrs port and related products
  • Determination method of demodulation reference signal dmrs port and related products
  • Determination method of demodulation reference signal dmrs port and related products

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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 present invention discloses a method for determining a demodulation reference signal DMRS port and related products, including: receiving a high-level preset parameter set sent by at least one TRP among multiple transmitting and receiving points TRP; according to at least one of the high-level preset parameters The set determines the DMRS port associated when the multiple TRPs send the physical downlink shared channel PDSCH data, wherein the DMRS port and the code division multiplexing group CDM group are in a one-to-one correspondence; each of the DMRS ports receives information from the corresponding PDSCH data sent by TRP. The embodiment of the present invention effectively prevents the DMRS ports used for each TRP transmission from the same code division multiplexing group CDM group, improves the utilization rate of downlink information on frequency domain resources, and reduces TRP transmission interference.

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 Patents(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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