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Signal transmission method and device

A signal transmission and signal technology, applied in the field of communication, can solve the problem that the terminal cannot receive the reference signal well, and it cannot be solved well

Active Publication Date: 2019-10-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When transmitting reference signals and / or physical shared channels, there are still some defects in the existing technology. For example, there are still certain problems in notifying the time domain characteristics of aperiodic CSI-IM or aperiodic TRS, so that the terminal cannot The reference signal is well received by the
In addition, when the reference signal is transmitted, if the reference signal and the physical shared channel have overlapping resources, how to effectively receive the reference signal and the physical shared channel transmitted in the common time domain resource has not been well resolved.

Method used

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  • Signal transmission method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0080] This embodiment is used to illustrate the time slot determination problem in the transmission process of an aperiodic reference signal, such as CSI-IM (aperiodic CSI-IM, APCSI-IM), and the base station and terminal transmit and receive AP CSI-IM through the following process . Here, greater than or equal to 1 CSI-RS resource setting can be configured through high-level signaling, each CSI-RS resource setting includes greater than or equal to 1 CSI-IM resource set, and each CSI-IM resource set includes greater than or equal to 1 CSI- IM resource. Here, the time-domain characteristics of the CSI-IM can be configured as periodic, aperiodic, or semi-persistent through high-layer signaling.

[0081] The base station configures the first signaling, determines the time slot slot for sending the aperiodic reference signal according to the first signaling, and sends the aperiodic channel state information interference measurement resource AP CSI-IM resource(s) in the time slot....

Embodiment 2

[0103] This embodiment is mainly used to illustrate the process of transmitting an aperiodic reference signal when carrier aggregation transmits information. The base station is configured with multiple serving cells (or carriers, or BWP) CCi, the subcarrier spacing corresponding to the i-th carrier (or carrier, or BWP) CCi is SCSi, i=1,...,N, N is greater than 1 It should be noted that the serving cell here can be replaced by a carrier or BWP. A physical downlink control information (Donwlink Controlinformation, DCI, generally carried by PDCCH) is used to trigger reference signals of multiple carriers across carriers, such as CSI-RS, assuming that the base station is not configured with quasi-co-located type D (QCL Type D). In the following process, one DCI triggers CSI-RS resource or CSI-RS resource set or CSI-RS resource Setting of multiple CCs.

[0104] Configure the first signaling; determine the first reference time Ki for sending aperiodic channel state information ref...

Embodiment 3

[0126] In this embodiment, an aperiodic tracking reference signal (AP TRS) is sent or received. Wherein, the AP TRS is divided into two parts, the first part of the AP TRS and the second part of the AP TRS, the first part of the AP TRS and the second part of the AP TRS can carry the same information, including but not limited to one of the following, the same number of ports, Same time domain position, subcarrier position, same transmit power. And the first part of the AP TRS and the second part of the AP TRS are respectively sent in two consecutive time slots.

[0127] The base station configures the first signaling; and determines the time slot for sending the aperiodic tracking reference signal according to the first signaling.

[0128] Further, the base station sends the first signaling.

[0129] The base station sends an aperiodic tracking reference signal in the time slot determined by the first signaling.

[0130] Preferably, the base station determines the first tim...

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Abstract

The invention discloses a signal transmission method and device. The method comprises the following steps: configuring a first signaling; and sending the reference signal in the time slot for sendingthe reference signal according to the time slot for sending the reference signal determined by the first signaling. Through the scheme of the invention, the wireless communication system can achieve the purpose of normally sending or receiving the aperiodic signal by utilizing the related signaling of the existing period under the condition of not adding a new aperiodic high-level signaling, i.e.,not modifying the standard.

Description

technical field [0001] The invention relates to the field of communication, in particular to a signal transmission method and device. Background technique [0002] With the rapid development of wireless communication requirements in life and production, the wireless communication system has evolved from the fourth-generation Long Term Evolution (LTE for short), Long Term Evolution upgrade technology (LTE-A, LTE-Advanced), to The current fifth-generation new radio access technology (NR, New RAT, New Radio Access Technology) is developing and evolving. In communication systems such as NR and LTE, better transmission of information in the future requires base stations or users to obtain more accurate channel state information (Channel State Information, CSI), where channel state information includes but is not limited to: Channel Quality Indication (Channel Quality Indication) Indication, CQI), Precoding Matrix Indicator (Precoding Matrix Indicator, PMI), Rank Indicator (Rank ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0048H04L5/0053H04W72/0446H04L5/0062H04L5/0094H04L5/001H04L5/0023H04B7/0626H04L5/0057H04W72/23
Inventor 肖华华鲁照华吴昊李儒岳
Owner ZTE CORP