KR-102963548-B1 - METHOD FOR INDICATING REFERENCE SIGNAL CONFIGURATION INFORMATION, BASE STATION, AND TERMINAL

KR102963548B1KR 102963548 B1KR102963548 B1KR 102963548B1KR-102963548-B1

Abstract

A method, a base station, and a terminal are provided for representing reference signal configuration information. The method includes a first communication node determining a joint signaling and the first communication node transmitting the joint signaling to a second communication node. The joint signaling includes first information and second information. The first information includes at least one of the following: quasi-parallel configuration information and configuration information of a transmission beam. The second information includes at least one of the following: configuration information of a reference signal for phase tracking and configuration information of a demodulation reference signal.

Inventors

지앙 추앙신
장 난
루 자오후아
리 유응곡
가오 보
우 하오
메이 멩

Assignees

지티이 코포레이션

Dates

Publication Date: 20260511
Application Date: 20180726
Priority Date: 20170809

Claims (20)

As a method for wireless communication, A step of notifying the first communication node of the second information by transmitting the signaling of the first information to the first communication node by the second communication node, wherein the first information includes quasi-colocation configuration information, the quasi-colocation configuration information includes one or more quasi-colocation parameter subsets, the ports of the demodulation reference signal are divided into one or more port groups of the demodulation reference signal, and each of the one or more quasi-colocation parameter subsets corresponds to a port group of the demodulation reference signal, and the second information includes the number of ports of the phase tracking reference signal, port identifiers of the phase tracking reference signal, or port mapping information of the demodulation reference signal - ; and A step of performing data transmission with the first communication node based on the second information by the second communication node. A method for wireless communication including
In paragraph 1, A method for wireless communication, wherein the signaling of the first information comprises port identifiers of reference signals for phase tracking corresponding to each of the one or more quasi-parallel parameter subsets.
In paragraph 1, A method for wireless communication in which the maximum number of ports of the reference signal for phase tracking is equal to the maximum number of subsets of quasi-parallel parameters.
In paragraph 1, A method for wireless communication, wherein the signaling of the first information also indicates whether the one or more port groups of the demodulation reference signal share a single phase tracking reference signal.
As a method for wireless communication, A step of determining second information by the first communication node by receiving signaling of first information from the second communication node—the first information includes quasi-colocation configuration information, the quasi-colocation configuration information includes one or more quasi-colocation parameter subsets, the ports of the demodulation reference signal are divided into one or more port groups of the demodulation reference signal, each of the one or more quasi-colocation parameter subsets corresponds to a port group of the demodulation reference signal, and the second information includes the number of ports of the phase tracking reference signal, port identifiers of the phase tracking reference signal, or port mapping information of the demodulation reference signal—; and A step of performing data transmission with the second communication node that transmits the signaling of the first information by the first communication node according to the second information. A method for wireless communication including
In paragraph 5, A method for wireless communication, wherein the signaling of the first information comprises port identifiers of a reference signal for phase tracking corresponding to each of the one or more quasi-parallel parameter subsets.
In paragraph 5, A method for wireless communication in which the maximum number of ports of the reference signal for phase tracking is equal to the maximum number of subsets of quasi-parallel parameters.
In paragraph 5, A method for wireless communication, wherein the signaling of the first information also indicates whether the one or more port groups of the demodulation reference signal share a single phase tracking reference signal.
As a base station, processor; and Memory containing processor executable code Includes, When the above processor executable code is executed by the processor, Notifying second information by transmitting the signaling of first information to a terminal, wherein the first information includes quasi-colocation configuration information, the quasi-colocation configuration information includes one or more quasi-colocation parameter subsets, the ports of the demodulation reference signal are divided into one or more port groups of the demodulation reference signal, and each of the one or more quasi-colocation parameter subsets corresponds to a port group of the demodulation reference signal, and the second information includes the number of ports of the phase tracking reference signal, port identifiers of the phase tracking reference signal, or port mapping information of the demodulation reference signal. To perform data transmission with the terminal based on the second information above, A base station that constitutes the above processor.
In Paragraph 9, A base station in which the signaling of the first information comprises port identifiers of reference signals for phase tracking corresponding to each of the one or more quasi-parallel parameter subsets.
In Paragraph 9, A base station in which the maximum number of ports for the reference signal for the above phase tracking is equal to the maximum number of subsets of quasi-parallel parameters.
In Paragraph 9, The signaling of the first information also indicates whether the one or more port groups of the demodulation reference signal share a single phase tracking reference signal, in a base station.
In the terminal, processor; and Memory containing processor executable code Includes, When the above processor executable code is executed by the processor, Determining second information by receiving signaling of first information - said first information includes quasi-colocation configuration information, said quasi-colocation configuration information includes one or more quasi-colocation parameter subsets, said ports of a demodulation reference signal are divided into one or more port groups of said demodulation reference signal, and each of said one or more quasi-colocation parameter subsets corresponds to a port group of said demodulation reference signal, and said second information includes the number of ports of a reference signal for phase tracking, port identifiers of said reference signal for phase tracking, or port mapping information of said reference signal for demodulation - , In accordance with the second information above, to perform data transmission with a base station transmitting the signaling of the first information, A terminal that constitutes the above-mentioned processor.
In Paragraph 13, A terminal in which the signaling of the first information comprises port identifiers of reference signals for phase tracking corresponding to each of the one or more quasi-parallel parameter subsets.
In Paragraph 13, A terminal in which the maximum number of ports of the reference signal for the above phase tracking is equal to the maximum number of subsets of quasi-parallel parameters.
In Paragraph 13, The signaling of the first information also indicates whether the one or more port groups of the demodulation reference signal share a single phase tracking reference signal, a terminal.
delete
delete
delete
delete

Description

Method for indicating reference signal configuration information, base station, and terminal [Cross-reference to related applications] This application is based on Chinese patent application No. 201710677499.3 filed on August 9, 2017, and claims priority thereto, the disclosure of said Chinese patent application is incorporated herein in its entirety by reference. [Technical Field] The present application relates to the field of communications, and in particular to a method for indicating reference signal configuration information, a base station, and a terminal, but is not limited thereto. In the relevant technology, it is necessary to introduce a phase noise tracking reference signal (PTRS) to estimate phase noise at high frequencies. Generally, one antenna panel at a transmission receiver point (TRP) uses a single crystal oscillator, and therefore, multiple demodulation reference signal (DMRS) ports from a single antenna panel may share a single PTRS port; that is, the estimation result of a PTRS port may be used for multiple DMRS ports from a single antenna panel. If multiple panels at a single TRP share a single crystal oscillator, all DMRS ports from a single TRP may share a single PTRS port. However, currently, there is no consensus on how to know the number of PTRS ports and how to notify the user of the number of PTRS ports. Semi-static notification of the number of PTRS ports is inflexible, while flexible notification of Downlink Control Information (DCI) requires physical layer signaling overhead. Furthermore, there is no consensus on how to configure the type and number of symbols for the front-loaded reference signal. Semi-static configuration of upper-layer signaling will present problems in multi-cell transmission, whereas flexible notification of DCI requires physical layer signaling overhead. Currently, New Radio (NR) physical layer technology is the subject of heated discussion within the Radio Access Network (RAN) of the 3rd Generation Partnership Project (3GPP). Flexibility and efficiency have always been goals pursued in NR physical layer design. Furthermore, the pursuit of maximum flexibility for physical layer reference signals also appears to be a trend. This is because the requirements for demodulating reference signals may differ for various application scenarios. Additionally, NR supports data transmission at high frequencies; therefore, multi-antenna beamforming technology is required to compensate for significant path losses and other losses at high frequencies, such as attenuation caused by rain or vegetation absorption. Beamforming technology at high frequencies can be categorized into digital beamforming, analog beamforming, and hybrid digital-analog beamforming. In digital beamforming technology, the transmitting end needs to have relatively good knowledge of the channel conditions—that is, the channel information for each antenna port—and consequently, large reference signal overhead becomes a problem. Therefore, analog beamforming has received widespread attention. Beamforming methods can be implemented at the transmitting end and also at the receiving end. For example, a base station can transmit data to a user by using different transmitting beams, and a user can also receive data by using different receiving beams. In Long Term Evolution (LTE), the set of quasi-colocation (QCL) parameters mainly includes average gain, delay spread, Doppler spread, Doppler shift, and average delay. When performing multi-TRP transmission, the base station needs to notify the user of the reference signal and PDSCH mapping parameters that are quasi-colocated with the user's DMRS. In this way, the user may demodulate data by using the QCL parameter information of the configured reference signal. However, in related technologies, notifying the user of reference signal information causes additional physical layer overhead, thereby leading to problems of massive signaling and physical layer overhead. An embodiment of the present application provides a method, a base station, and a terminal for representing reference signal configuration information. A method for representing reference signal information provided by an embodiment of the present application comprises: determining a joint signaling and transmitting the joint signaling. The joint signaling is used to represent reference signal configuration information. The joint signaling comprises first information and second information. The first information comprises at least one of the following: configuration information of a transmission beam and quasi-parallel configuration information. The second information comprises at least one of the following: configuration information of a phase tracking reference signal and configuration information of a demodulation reference signal. A method for representing reference signal information provided by another embodiment of the present application comprises: receiving a joint signaling; and performin