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Aperiodic sounding reference signal (SRS) transmission method and terminal equipment

A technology for sounding reference signal and terminal equipment, which is applied in the field of aperiodic sounding reference signal SRS transmission method and terminal equipment, and can solve problems such as transmission failure

Active Publication Date: 2019-10-11
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Embodiments of the present invention provide an aperiodic sounding reference signal SRS transmission method and terminal equipment to solve the problem in the prior art that transmission of one SRS resource set in multiple time slots easily leads to transmission failure

Method used

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  • Aperiodic sounding reference signal (SRS) transmission method and terminal equipment
  • Aperiodic sounding reference signal (SRS) transmission method and terminal equipment
  • Aperiodic sounding reference signal (SRS) transmission method and terminal equipment

Examples

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example 1

[0053] Such as figure 2 As shown, it is assumed that the aperiodic SRS trigger state 0 is configured by high layer signaling to correspond to the SRS resource set 0, the SRS resource set 0 includes SRS resources 0-3, and the offset of the aperiodic SRS transmission indication is 4. When the terminal device receives the aperiodic SRS trigger state 0 transmission triggered by the downlink control information in time slot n, the terminal will start to send SRS resource set 0 in time slot n+4. Due to the influence of the time slot format and network side configuration, a maximum of 2 SRS resources can be sent in time slot n+k. Therefore, SRS resource 0 and SRS resource 2 are transmitted in time slot n+4, while SRS resource 1 and SRS resource 3 will no longer be transmitted.

[0054] On the other hand, when m is greater than or equal to 2, in this case, the terminal transmits all or part of the SRS resources in the SRS resource set from slot n+k to slot n+k+m-1.

[0055] Specifi...

example 2

[0060] Example 2 (m is equal to 2):

[0061] Such as image 3 As shown, it is assumed that the aperiodic SRS trigger state 0 is configured by high layer signaling to correspond to the SRS resource set 0, the SRS resource set 0 includes SRS resources 0-3, and the offset of the aperiodic SRS transmission indication is 4. When the terminal device receives the aperiodic SRS trigger state 0 transmission triggered by the downlink control information in time slot n, the terminal will start to send SRS resource set 0 in time slot n+4. Due to the influence of time slot configuration, a maximum of 2 SRS resources can be sent in a time slot, therefore, SRS resource 0 and SRS resource 2 are transmitted preferentially in time slot n+4, and SRS resource 1 is transmitted in time slot n+5 and SRS resources3.

[0062] Although transmitting the same number of SRS resources in each time slot can simplify the implementation complexity of the base station, it also has restrictions on the configu...

example 3

[0063] Example three (m is equal to 3):

[0064] Such as Figure 4 As shown, it is assumed that the aperiodic SRS trigger state 0 is configured by high layer signaling to correspond to the SRS resource set 0, the SRS resource set 0 includes SRS resources 0-3, and the offset of the aperiodic SRS transmission indication is 4. When the terminal receives the aperiodic SRS trigger state 0 transmission triggered by the downlink control information in time slot n, the terminal will start to send SRS resource set 0 in time slot n+4. Due to the influence of the time slot format and network side configuration, a maximum of 3 SRS resources can be sent in the n+4 time slot, no SRS resource is configured in the n+5 time slot, and a maximum of 1 SRS resource can be sent in the n+6 time slot. Therefore, SRS resources 0, 1 and 2 are preferentially transmitted in time slot n+4, and SRS resource 3 is transmitted in time slot n+6.

[0065] Further, in the above-mentioned embodiments of the pre...

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Abstract

The invention provides an aperiodic sounding reference signal (SRS) transmission method and terminal equipment, and the method comprises the steps: receiving an aperiodic SRS transmission instructionat a time slot n, the aperiodic SRS transmission instruction being used for triggering the transmission of an SRS resource set associated with a target aperiodic SRS triggering state; from time slot n+ k to time slot n + k + m-1, transmitting SRS resources in a pre-configured SRS resource set associated with the target aperiodic SRS trigger state. According to the embodiment of the invention, thenon-periodic SRS transmission failure can be avoided, the transmission performance of the non-periodic SRS is improved, and the acquisition performance of the channel state information of the base station can be further improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting an aperiodic sounding reference signal (SRS) and a terminal device. Background technique [0002] The fifth generation 5G (5 th Generation) mobile communication system supports terminal UE 1T2R (1Transmit2Receive, 1 transmit 2 receive), 2T4R ((2Transmit 4Receive, 2 transmit 4 receive)) and 1T4R (1Transmit4Receive, 1 transmit 4 receive) antenna switching transmission, this feature is especially suitable for up and down In the scenario where downlink has reciprocity, it can assist the base station to obtain all downlink channel information. The configuration of the terminal antenna switching transmission is related to the terminal capability, and can be implemented by configuring the transmission of a Sounding Reference Signal (Sounding Reference Signal, SRS) through high-layer signaling. [0003] When the terminal uses 1T2R antenna switc...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0048H04W72/0446
Inventor 孙晓东孙鹏刘昊
Owner VIVO MOBILE COMM CO LTD
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