Unlock instant, AI-driven research and patent intelligence for your innovation.

A receiving method and terminal of an aperiodic tracking reference signal

A technology for tracking reference and receiving methods, which is applied in pilot signal distribution, wireless communication, signaling as a feature, etc., can solve problems such as poor flexibility and waste of resources, and achieve the effect of improving communication accuracy and efficiency

Active Publication Date: 2021-03-26
VIVO MOBILE COMM CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method for receiving an aperiodic tracking reference signal and a terminal, so as to solve the problem of poor flexibility and resource waste caused by periodic TRS for time-frequency tracking of secondary cells

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A receiving method and terminal of an aperiodic tracking reference signal
  • A receiving method and terminal of an aperiodic tracking reference signal
  • A receiving method and terminal of an aperiodic tracking reference signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Please refer to Figure 4 , the method for receiving an aperiodic tracking reference signal according to Embodiment 1 of the present invention includes:

[0074] Step 41: The terminal receives MAC CE signaling (activation Command) in the primary cell, and the MAC CE signaling includes indication information for activating the secondary cell;

[0075] On the network-side device corresponding to the primary cell, the network-side device generates MAC CE signaling at the MAC layer. The MAC CE signaling contains indication information for activating the secondary cell, and the MAC layer packages the MAC CE signaling and sends it to the physical layer, which is transmitted in PDSCH by the physical layer.

[0076] After the terminal receives the physical layer information sent by the network side device, it correctly receives the physical layer information through processes such as channel estimation, equalization, or decoding.

[0077] Step 42: The terminal receives downli...

Embodiment 2

[0090] Please refer to Figure 5 , the method for receiving an aperiodic tracking reference signal according to Embodiment 2 of the present invention includes:

[0091] Step 51: The terminal receives MAC CE signaling (activation Command) in the primary cell, and the MAC CE signaling includes indication information for activating the secondary cell;

[0092] On the network-side device corresponding to the primary cell, the network-side device generates MAC CE signaling at the MAC layer. The MAC CE signaling contains indication information for activating the secondary cell, and the MAC layer packages the MAC CE signaling and sends it to the physical layer, which is transmitted in PDSCH by the physical layer.

[0093] After receiving the physical layer information sent by the network side device, the terminal undergoes processes such as channel estimation, equalization, or decoding to correctly receive the physical layer information.

[0094] Step 52: The terminal sends an ackn...

Embodiment 3

[0107] Please refer to Image 6 , the method for receiving an aperiodic tracking reference signal according to Embodiment 3 of the present invention includes:

[0108] Step 61: The terminal receives MAC CE signaling (activation Command) in the primary cell, and the MAC CE signaling includes indication information for activating the secondary cell;

[0109] On the network-side device corresponding to the primary cell, the network-side device generates MAC CE signaling at the MAC layer. The MAC CE signaling contains indication information for activating the secondary cell, and the MAC layer packages the MAC CE signaling and sends it to the physical layer, which is transmitted in PDSCH by the physical layer.

[0110] After receiving the physical layer information sent by the network side device, the terminal undergoes processes such as channel estimation, equalization, or decoding to correctly receive the physical layer information.

[0111] Step 62: The terminal sends an ackno...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Embodiments of the present invention provide a method for receiving an aperiodic tracking reference signal and a terminal. The method includes: receiving downlink control information, the downlink control information includes information for triggering an aperiodic tracking reference signal in a secondary cell; according to the downlink control information , the aperiodic tracking reference signal is received in the secondary cell; if the validation condition of the aperiodic tracking reference signal is satisfied, it is determined that the aperiodic tracking reference signal is valid, and the validation condition includes at least: the receiving time of the aperiodic tracking reference signal is completed between the terminal and the secondary cell After RF tuning. In the embodiment of the present invention, the aperiodic tracking reference signal is used to perform time-frequency tracking on the secondary cell, and the aperiodic tracking reference signal can be triggered as needed, which solves the problem of poor flexibility of the periodic tracking reference signal. The receiving moment of the signal is clarified, which improves the communication accuracy and efficiency.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a method for receiving an aperiodic tracking reference signal and a terminal. Background technique [0002] In the future-oriented fifth-generation (5Generation, 5G) mobile communication system, in order to improve the reliability of the system, it is necessary to adjust the frequency offset, time offset, Doppler frequency shift, and Doppler spread of the system according to the reference signal. Accurate estimation of delay spread. At the same time, in order to reduce overhead and avoid the occurrence of reference signals (such as Cell Reference Signal (CRS)) that occupy more time-frequency resources, a new reference signal, that is, tracking reference signal (tracking reference signal) is introduced. , TRS). At the receiving end, the channel parameters can be accurately estimated according to the TRS to improve the accuracy of demodul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/00
CPCH04L1/0027H04W72/23H04W36/0069H04L1/16H04L5/001H04L5/0091H04L5/0051H04L5/0085H04W72/0453H04W80/02
Inventor 司晔孙鹏
Owner VIVO MOBILE COMM CO LTD