CN110149178B - Reference signal configuration method, terminal equipment and network side equipment - Google Patents

Abstract

Embodiments of the present invention disclose a reference signal configuration method, a terminal device, and a network-side device. The method includes: generating a first MAC CE signaling, where the first MAC CE signaling is used to activate an SCell of a UE, and used for triggering sending of a preset aperiodic reference signal to the UE; sending the first MAC CE signaling. The embodiment of the present invention can accurately configure an aperiodic reference signal for the SCell, and effectively reduce the activation delay of the SCell.

Description

Reference signal configuration method, terminal device and network side device

technical field

The present invention relates to the field of communications, and in particular, to a reference signal configuration method, terminal equipment and network side equipment.

Background technique

In the future-oriented fifth generation (5Generation, 5G) mobile communication system, in order to improve the spectrum efficiency, the technology of carrier aggregation is proposed. Cells in carrier aggregation can be divided into a primary cell (PrimAPy Cell, PCell) and a secondary cell (SecondAPy Cell, SCell). Among them, the PCell of the terminal equipment (User Equipment, UE) is always in an active state, and does not support activation and deactivation; while the SCell needs to be activated through activation signaling. At present, due to the long activation time of the SCell, the periodicity of the reference signal, and the fact that the UE only supports time-frequency tracking and/or channel measurement on the activated SCell, the reference signal cannot be accurately configured for the UE.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a reference signal configuration method, a terminal device and a network side device, so that the reference signal can be accurately configured for the SCell, and the activation delay of the SCell can be effectively reduced.

In a first aspect, an embodiment of the present invention provides a method for configuring a reference signal, which is applied to a network side device, including:

generating first MAC CE signaling, wherein the first MAC CE signaling is used to activate the secondary cell SCell of the UE, and is used to trigger sending a preset aperiodic reference signal to the UE;

Send the first MAC CE signaling.

In a second aspect, an embodiment of the present invention also provides a reference signal configuration method, which is applied to terminal equipment, including:

Receive first MAC CE signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger the UE to receive a preset aperiodic reference signal.

In a third aspect, an embodiment of the present invention also provides a reference signal configuration method, which is applied to a network side device, including:

generating first DCI signaling, wherein the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the SCell of the UE is not In the case of activation, instructing the UE to receive the preset aperiodic reference signal on the inactive SCell;

The first DCI signaling is sent.

In a fourth aspect, an embodiment of the present invention also provides a reference signal configuration method, applied to a terminal device, including:

Receive first DCI signaling, where the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and when the UE receives the first DCI signaling and the UE's SCell is inactive In the case of , the UE is instructed to receive the preset aperiodic reference signal on an inactive SCell.

In a fifth aspect, an embodiment of the present invention further provides a network side device, including:

a generating module, configured to generate a first MAC CE signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger sending a preset aperiodic reference signal to the UE;

A sending module, configured to send the first MAC CE signaling.

In a sixth aspect, an embodiment of the present invention further provides a network-side device, including: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being The processor implements the steps of the method as described in the first aspect when executed.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to the first aspect is implemented A step of.

In an eighth aspect, an embodiment of the present invention further provides a terminal device, including:

A receiving module, configured to receive first MAC CE signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger the UE to receive a preset aperiodic reference signal.

In a ninth aspect, an embodiment of the present invention further provides a terminal device, including: a memory, a processor, and a computer program stored in the memory and running on the processor, the computer program being processed by the processor The steps of the method as described in the second aspect are implemented when the processor is executed.

In a tenth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to the second aspect is implemented A step of.

In an eleventh aspect, an embodiment of the present invention further provides a network side device, including:

A generating module, configured to generate a first DCI signaling, wherein the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the In the case that the SCell of the UE is not activated, instruct the UE to receive the preset aperiodic reference signal on the inactive SCell;

A sending module, configured to send the first DCI signaling.

In a twelfth aspect, an embodiment of the present invention further provides a network-side device, including: a memory, a processor, and a computer program stored in the memory and running on the processor, the computer program being The processor implements the steps of the method according to the third aspect when executed.

In a thirteenth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the third aspect is implemented steps of the method.

In a fourteenth aspect, an embodiment of the present invention further provides a terminal device, including:

a receiving module, configured to receive first DCI signaling, wherein the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and when the UE receives the first DCI signaling and the If the SCell of the UE is not activated, the UE is instructed to receive the preset aperiodic reference signal on the inactive SCell.

In a fifteenth aspect, an embodiment of the present invention further provides a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being The processor implements the steps of the method as described in the fourth aspect when executed.

In a sixteenth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the fourth aspect is implemented steps of the method.

In this embodiment of the present invention, by generating an SCell for activating the UE, and for triggering sending the preset aperiodic reference signal first MAC CE signaling to the UE, and sending the first MAC CE signaling, it is possible to accurately Configure an aperiodic reference signal for the SCell to effectively reduce the activation delay of the SCell.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of a network architecture provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a reference signal configuration method according to an embodiment of the present invention;

3 is a schematic diagram of sending a first MAC CE signaling and a preset aperiodic reference signal provided by an embodiment of the present invention;

4 is a schematic diagram of sending a first MAC CE signaling and a plurality of preset aperiodic reference signals provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another reference signal configuration method provided by an embodiment of the present invention;

6 is a schematic diagram of reception of a first MAC CE signaling and a preset aperiodic reference signal provided by an embodiment of the present invention;

7 is a schematic diagram of receiving the first MAC CE signaling and multiple preset aperiodic reference signals provided by an embodiment of the present invention;

FIG. 8 is a schematic flowchart of another reference signal configuration method provided by an embodiment of the present invention;

FIG. 9 is a schematic flowchart of another reference signal configuration method provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another network side device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

13 is a schematic structural diagram of another terminal device provided by an embodiment of the present invention;

FIG. 14 is a schematic diagram of a hardware structure of a network side device according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in FIG. 1, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be a UE (User Equipment), for example, a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), Terminal-side devices such as personal digital assistant (personal digital assistant, PDA for short), mobile internet device (Mobile Internet Device, MID), or wearable device (Wearable Device), etc. It should be noted that this embodiment of the present invention is not limited to The specific type of user terminal 11 . The above-mentioned base station 12 is a network-side device, which may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems, or referred to as a node B. It should be noted that, in the implementation of the present invention In the example, only a 5G base station is used as an example, but the specific type of the base station 12 is not limited.

It should be noted that, the specific functions of the above-mentioned user terminal 11 and base station 12 will be specifically described through the following multiple embodiments.

Example 1

FIG. 2 is a schematic flowchart of a reference signal configuration method according to an embodiment of the present invention. The method is applied to a network side device, and the method includes:

Step S210, generating a first MAC CE (Medium Access Control Control Element) signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger sending a preset aperiodic reference signal to the UE.

In practical applications, the SCell of the UE needs to be activated, and the activated SCell can provide wireless resources for the UE. In order to activate the SCell, the network side device generates the first MAC CE signaling, and the first MAC CE signaling can activate the SCell and trigger the sending of a preset aperiodic reference signal to the UE.

Since the first MAC CE signaling is not physical layer signaling, when the UE demodulates the first MAC CE signaling to activate the SCell, the demodulation time is long. If a periodic reference signal is configured for the SCell, the activation delay of the SCell will increase by one reference signal period at most, resulting in the UE being unable to quickly synchronize with the SCell. Therefore, in the embodiment of the present invention, the first MAC CE signaling is used to trigger the sending of a preset aperiodic reference signal to the UE, thereby effectively avoiding the problem of long activation delay caused by the periodic reference signal.

In this embodiment of the present invention, the preset aperiodic reference signal includes one of the following: AP TRS (AP Tracking Reference Signal) and AP CSI-RS (AP Channel State Information Reference Signal), wherein the AP TRS is used to perform time-frequency analysis on the SCell. Tracking, AP CSI-RS is used for channel measurement on SCell.

The first MAC CE signaling includes but is not limited to the following two:

The first:

In the embodiment of the present invention, the first MAC CE signaling is used to trigger sending a preset aperiodic reference signal to the UE; ), the preset aperiodic reference signal is sent, wherein the sending time offset value is used to represent the time difference between the first MAC CE signaling and the sending of the preset aperiodic reference signal.

The network-side device configures a preset aperiodic reference signal, and after sending the first MAC CE signaling, and at a time corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, sends the The preset aperiodic reference signal.

FIG. 3 is a schematic diagram of sending the first MAC CE signaling and a preset aperiodic reference signal according to an embodiment of the present invention.

As shown in FIG. 3 , the preset aperiodic reference signal is AP TRS. The network side device configures an AP TRS, and the sending time offset value of the APTRS relative to the first MAC CE signaling is Y. Then, after the network side device sends the first MAC CE signaling at time t, it sends the AP TRS at time (t+Y).

In order to enable the UE to accurately receive the preset aperiodic reference signal, it is necessary to indicate the transmission time offset value of the preset aperiodic reference signal to the UE.

In the embodiment of the present application, the method further includes: instructing the UE to send a time offset value;

The manner of instructing the UE to send the time offset value includes one of the following:

Instruct the UE to send the time offset value through the first MAC CE signaling;

Instruct the UE to send the time offset value through the second MAC CE signaling or the first RRC (Radio Resource Control) signaling;

The second RRC signaling indicates to the UE a plurality of indexes of preset transmission time offset values, and the third MACCE signaling indicates to the UE the index of the transmission time offset value;

The transmission time offset value is specified by the first preset protocol.

In this embodiment of the present invention, the first MAC CE signaling is further used to determine a bandwidth part (Band Width Part, BWP) of the preset aperiodic reference signal when triggering to send a preset aperiodic reference signal to the UE, wherein, The BWP includes one of the following: a first activated BWP, a default BWP.

In order for the UE to accurately receive a preset aperiodic reference signal, the BWP of the preset aperiodic reference signal needs to be indicated to the UE.

It should be noted that the manner of indicating the BWP of the preset aperiodic reference signal to the UE may be determined according to the actual situation, which is not specifically limited here.

By generating the SCell for activating the UE and triggering the sending of a preset aperiodic reference signal first MAC CE signaling to the UE, and sending the first MAC CE signaling, an aperiodic SCell can be configured accurately for the SCell The reference signal can effectively reduce the activation delay of the SCell.

The second:

In this embodiment of the present invention, the first MAC CE signaling is used to trigger the sending of multiple preset aperiodic reference signals to the UE; when the multiple preset aperiodic reference signals are relative to the sending time offset value of the first MAC CE signaling Sending multiple preset aperiodic reference signals at multiple times corresponding to the set, wherein the sending time offset value set includes the sending time offset value of each preset aperiodic reference signal in the multiple preset aperiodic reference signals , the sending time offset value of each preset aperiodic reference signal is used to represent the time difference between sending the first MAC CE signaling and sending each preset aperiodic reference signal.

The network side device configures multiple preset aperiodic reference signals, and after sending the first MAC CE signaling, and when each preset aperiodic reference signal in the multiple preset aperiodic reference signals is relative to the first MAC CE signaling Each preset aperiodic reference signal is sent at the time corresponding to the sending time offset value of .

FIG. 4 is a schematic diagram of sending the first MAC CE signaling and multiple preset aperiodic reference signals according to an embodiment of the present invention.

As shown in FIG. 4 , the multiple preset aperiodic reference signals are AP TRS 1 , AP TRS 2 , and AP TRS 3 . The set of sending time offset values includes: a first sending time offset value Y1, representing a sending time offset value of AP TRS 1 relative to the first MAC CE signaling; a second sending time offset value Y2, representing AP TRS 2 relative to the sending time offset value of the first MAC CE signaling; the third sending time offset value Y3 represents the sending time offset value of the AP TRS 3 relative to the first MAC CE signaling. Then, after sending the first MAC CE signaling at time t, the network side device sends AP TRS 1 at time (t+Y1); sends AP TRS 2 at time (t+Y2); sends AP TRS at time (t+Y3) 3.

In order to enable the UE to accurately receive multiple preset aperiodic reference signals, it is necessary to indicate to the UE a set of transmission time offset values of the multiple preset aperiodic reference signals.

In the embodiment of the present application, the method further includes: instructing the UE to send a set of time offset values;

Wherein, the manner of instructing the UE to send the time offset value set includes one of the following:

Instruct the UE to send a set of time offset values through the first MAC CE signaling;

Instruct the UE to send the set of time offset values through the fourth MAC CE signaling or the third RRC signaling;

The index of multiple preset transmission time offset values is indicated to the UE through the fourth RRC signaling; and the index of each transmission time offset value in the set of transmission time offset values is indicated to the UE through the fifth MACCE signaling;

The set of sending time offset values is specified by the second preset protocol.

In this embodiment of the present invention, the first MAC CE signaling is further configured to determine a BWP set of multiple preset aperiodic reference signals when triggering sending of multiple preset aperiodic reference signals to the UE, where the BWP set includes multiple preset aperiodic reference signals. The BWP of each preset aperiodic reference signal in the preset aperiodic reference signals, wherein the BWP includes one of the following: a first activated BWP and a default BWP.

In order to enable the UE to accurately receive multiple preset aperiodic reference signals, it is necessary to indicate to the UE a BWP set of multiple preset aperiodic reference signals.

It should be noted that the manner of indicating to the UE the BWP sets of multiple preset aperiodic reference signals can be determined according to the actual situation, and is not specifically limited here.

By generating the SCell for activating the UE and triggering the sending of multiple preset aperiodic reference signal first MAC CE signaling to the UE, and sending the first MAC CE signaling, it is possible to accurately configure multiple SCells for the SCell. The aperiodic reference signal effectively reduces the activation delay of the SCell.

Step S220, sending the first MAC CE signaling.

After the network side device generates the first MAC CE signaling, it sends the first MAC CE signaling to the UE, so that the UE performs SCell activation after receiving the first MAC CE, and receives a preset aperiodic reference signal.

By generating the SCell for activating the UE and triggering sending the preset aperiodic reference signal first MAC CE signaling to the UE, and sending the first MAC CE signaling, the aperiodic reference signal can be accurately configured for the SCell , effectively reducing the activation delay of SCell.

FIG. 5 is a schematic flowchart of another reference signal configuration method according to an embodiment of the present invention. The method is applied to a terminal device, and the method includes:

Step S510: Receive first MAC CE signaling, where the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger the UE to receive a preset aperiodic reference signal.

The UE receives the first MAC CE signaling sent by the network side device, and then performs SCell activation by demodulating the first MAC CE signaling, and triggers to receive a preset aperiodic reference signal according to the first MAC CE signaling.

In this embodiment of the present invention, the preset aperiodic reference signal includes one of the following: AP TRS and AP CSI-RS, where the AP TRS is used to perform time-frequency tracking on the SCell, and the AP CSI-RS is used to perform channel measurement on the SCell .

The first MAC CE signaling includes but is not limited to the following two:

The first:

In this embodiment of the present invention, the first MAC CE signaling is used to trigger the UE to receive a preset aperiodic reference signal; at the moment corresponding to the transmission time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, A preset aperiodic reference signal is received, wherein the sending time offset value is used to represent the time difference between sending the first MAC CE signaling and sending the preset aperiodic reference signal.

The UE receives the preset aperiodic reference signal after receiving the first MAC CE signaling and reaches the time corresponding to the transmission time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling.

FIG. 6 is a schematic diagram of receiving the first MAC CE signaling and a preset aperiodic reference signal according to an embodiment of the present invention.

As shown in FIG. 6 , the preset aperiodic reference signal is AP TRS. The transmission time offset value of the AP TRS relative to the first MAC CE signaling is Y. Then, after receiving the first MAC CE signaling at time n, the UE sends the AP TRS at time (n+Y).

In order for the UE to accurately receive the preset aperiodic reference signal, the UE needs to determine the transmission time offset value of the preset aperiodic reference signal.

In the embodiment of the present invention, the method further includes: determining a sending time offset value;

Wherein, the manner of determining the sending time offset value includes one of the following:

The transmission time offset value is determined by the first MAC CE signaling, wherein the first MAC CE signaling is used to indicate the transmission time offset value to the UE;

receiving the second MAC CE signaling or the first RRC signaling, wherein the second MAC CE signaling and the first RRC signaling are used to instruct the UE to send a time offset value;

Receive second RRC signaling and third MAC CE signaling, where the second RRC signaling is used to indicate to the UE multiple indices of preset transmission time offset values, and the third MAC CE signaling is used to indicate to the UE to send the index of the time offset value;

The transmission time offset value is specified by the first preset protocol.

In this embodiment of the present invention, the method further includes: determining a BWP of a preset aperiodic reference signal, where the BWP includes one of the following: a first activated BWP and a default BWP.

Wherein, the BWP of the preset aperiodic reference signal is preset by the network side device and indicated to the UE.

It should be noted that the manner in which the UE determines the BWP of the preset aperiodic reference signal depends on the manner in which the network side device indicates the BWP of the preset aperiodic reference signal to the UE, which may be determined according to the actual situation, which is not specifically limited here.

By receiving the first MAC CE signaling for activating the SCell of the UE and triggering the UE to receive a preset aperiodic reference signal, an aperiodic reference signal can be accurately configured for the SCell, effectively reducing the activation delay of the SCell .

The second:

In this embodiment of the present invention, the first MAC CE signaling is used to trigger the UE to receive multiple preset aperiodic reference signals; in the set of sending time offset values of the multiple preset aperiodic reference signals relative to the first MAC CE signaling corresponding multiple times, receiving multiple preset aperiodic reference signals, wherein the set of sending time offset values includes a sending time offset value of each preset aperiodic reference signal in the multiple preset aperiodic reference signals, The sending time offset value of each preset aperiodic reference signal is used to represent the time difference between sending the first MAC CE signaling and sending each preset aperiodic reference signal.

After the UE receives the first MAC CE signaling, and reaches the time corresponding to the transmission time offset value of each preset aperiodic reference signal relative to the first MAC CE signaling among the multiple preset aperiodic reference signals, the UE receives each preset aperiodic reference signal. a preset aperiodic reference signal.

FIG. 7 is a schematic diagram of receiving the first MAC CE signaling and multiple preset aperiodic reference signals according to an embodiment of the present invention.

As shown in FIG. 7 , the multiple preset aperiodic reference signals are AP TRS 1 , AP TRS 2 , and AP TRS 3 . The set of sending time offset values of the plurality of preset aperiodic reference signals includes: a first sending time offset value Y1, which represents a sending time offset value of AP TRS 1 relative to the first MAC CE signaling; a second sending time offset value The offset value Y2 represents the transmission time offset value of AP TRS 2 relative to the first MAC CE signaling; the third transmission time offset value Y3 represents the transmission time offset value of AP TRS 3 relative to the first MAC CE signaling . Then, after receiving the first MAC CE signaling at time n, the UE receives APTRS 1 at time (n+Y1); AP TRS 2 at time (n+Y2); and AP TRS 3 at time (n+Y3).

In order to enable the UE to accurately receive multiple preset aperiodic reference signals, the UE needs to determine a set of transmission time offset values of the multiple preset aperiodic reference signals.

In the embodiment of the present invention, the method further includes: determining a set of sending time offset values;

Wherein, the manner of determining the set of sending time offset values includes one of the following:

Determine the set of sending time offset values by using the first MAC CE signaling, wherein the first MAC CE signaling is used to indicate to the UE to send the set of time offset values;

receiving the fourth MAC CE signaling or the third RRC signaling, wherein the fourth MAC CE signaling and the third RRC signaling are used to instruct the UE to send a time offset value set;

Receive fourth RRC signaling and fifth MAC CE signaling, where the fourth RRC signaling is used to indicate to the UE multiple indices of preset transmission time offset values, and the fifth MAC CE signaling is used to indicate to the UE to send the index of each sending time offset value in the time offset value set;

The set of sending time offset values is specified by the second preset protocol.

In this embodiment of the present invention, the method further includes: determining a BWP set of multiple preset aperiodic reference signals, where the BWP set includes a BWP of each preset aperiodic reference signal among the multiple preset aperiodic reference signals , where the BWP includes one of the following: a first activated BWP and a default BWP.

Wherein, the BWP sets of multiple preset aperiodic reference signals are preset by the network side device and indicated to the UE.

It should be noted that the manner in which the UE determines the BWP sets of the multiple preset aperiodic reference signals depends on the manner in which the network side device indicates the BWP sets of the multiple preset aperiodic reference signals to the UE, which can be determined according to the actual situation. Make specific restrictions.

By receiving the first MAC CE signaling for activating the SCell of the UE and for triggering the UE to receive multiple preset aperiodic reference signals, it is possible to accurately configure multiple aperiodic reference signals for the SCell, effectively reducing the activation of the SCell time delay.

It should be noted that, in Embodiment 1 of the above method, the first MAC CE signaling, the second MAC CE signaling, the third MAC CE signaling, the fourth MAC CE signaling, and the fifth MAC CE signaling may be the same. may also be different; the first RRC signaling, the second RRC signaling, the third RRC signaling, and the fourth RRC signaling may be the same or different; the first preset protocol and the second preset protocol may be the same, It can also be different, which is not specifically limited here.

In the first embodiment of the above method, the sending time offset value is greater than a preset value; the preset value includes one of the following: a UE reported value, a network configuration value, and a protocol agreed value.

Example 2

FIG. 8 is a schematic flowchart of another reference signal configuration method according to an embodiment of the present invention. The method is applied to a network side device, and the method includes:

Step S810: Generate first DCI signaling, where the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the SCell of the UE is not activated, Instructs the UE to receive a preset aperiodic reference signal on an inactive SCell.

In practical applications, the SCell of the UE needs to be activated, and the activated SCell can provide wireless resources for the UE. The UE needs to receive the reference signal on the activated SCell, and if there is no signaling indication or protocol stipulation, the UE cannot receive the reference signal on the inactive SCell.

The MAC CE signaling is used to activate the UE. Since the MAC CE signaling is not a physical layer signaling, when the UE demodulates the MAC CE signaling to activate the SCell, the demodulation time is long. If the aperiodic reference signal is configured for the UE, the SCell is not activated when the UE receives the aperiodic reference signal, resulting in the timing disorder of the UE. Therefore, in this embodiment of the present invention, the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the SCell of the UE is not activated, it indicates that the UE can Activating the reception of preset aperiodic reference signals on the SCell effectively avoids the problem of UE timing disorder.

In this embodiment of the present invention, the preset aperiodic reference signal includes one of the following: AP TRS and AP CSI-RS, where the AP TRS is used to perform time-frequency tracking on the SCell, and the AP CSI-RS is used to perform channel measurement on the SCell .

The first DCI signaling includes but is not limited to the following two:

The first:

In this embodiment of the present invention, the first DCI signaling is used to trigger the sending of a preset aperiodic reference signal to the UE; at the moment corresponding to the sending time offset value of the preset aperiodic reference signal relative to the sending time offset value of the first DCI signaling, send a preset aperiodic reference signal to the UE. The preset aperiodic reference signal, wherein the sending time offset value is used to represent the time difference between sending the first DCI signaling and sending the preset aperiodic reference signal.

The network-side device configures a preset aperiodic reference signal, and sends the preset aperiodic reference signal after sending the first DCI signaling and at a time corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first DCI signaling. Set the aperiodic reference signal.

For example, the preset aperiodic reference signal is AP CSI-RS. The network side device configures one AP CSI-RS, and the sending time offset value of the AP CSI-RS relative to the first DCI signaling is Y. Then the network side device sends the AP CSI-RS at time (t+Y) after sending the first DCI signaling at time t.

In order to enable the UE to accurately receive the preset aperiodic reference signal, it is necessary to indicate the transmission time offset value of the preset aperiodic reference signal to the UE.

In the embodiment of the present application, the method further includes: instructing the UE to send a time offset value;

The manner of instructing the UE to send the time offset value includes one of the following:

Instruct the UE to send the time offset value through the first DCI signaling;

Instruct the UE to send the time offset value through the second DCI signaling;

Instruct the UE to send the time offset value through the first RRC signaling;

The transmission time offset value is specified by the third preset protocol.

In this embodiment of the present invention, the first DCI signaling is further used to determine the BWP of the preset aperiodic reference signal when triggering to send a preset aperiodic reference signal to the UE, where the BWP includes one of the following: the first Activate BWP, default BWP.

In order for the UE to accurately receive a preset aperiodic reference signal, the BWP of the preset aperiodic reference signal needs to be indicated to the UE.

It should be noted that the manner of indicating the BWP of the preset aperiodic reference signal to the UE may be determined according to the actual situation, which is not specifically limited here.

By generating first DCI signaling, where the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the UE's SCell is not activated, indicating The UE receives the preset aperiodic reference signal on the inactive SCell, thereby effectively avoiding the problem of UE timing disorder.

The second:

In this embodiment of the present invention, the first DCI signaling is used to trigger the sending of multiple preset aperiodic reference signals to the UE; the multiple preset aperiodic reference signals are corresponding to the set of sending time offset values of the first DCI signaling. at a plurality of times, sending a plurality of preset aperiodic reference signals, wherein the sending time offset value set includes a sending time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and each preset aperiodic reference signal The sending time offset values of the preset aperiodic reference signals are used to represent the time difference between sending the first DCI signaling and sending each preset aperiodic reference signal.

The network side device configures multiple preset aperiodic reference signals, and after sending the first DCI signaling, and when each preset aperiodic reference signal in the multiple preset aperiodic reference signals is sent relative to the first DCI signaling At the time corresponding to the time offset value, each preset aperiodic reference signal is sent.

For example, the multiple preset aperiodic reference signals are AP CSI-RS 1, AP CSI-RS 2, and AP CSI-RS 3. The set of sending time offset values of the plurality of preset aperiodic reference signals includes: a first sending time offset value Y1, which represents a sending time offset value of APCSI-RS 1 relative to the first DCI signaling; a second sending time The offset value Y2 represents the transmission time offset value of the AP CSI-RS2 relative to the first DCI signaling; the third transmission time offset value Y3 represents the transmission time offset value of the AP CSI-RS relative to the first DCI signaling value. Then, after sending the first DCI signaling at time t, the UE sends AP CSI-RS 1 at time (t+Y1); sends AP CSI-RS 2 at time (t+Y2); sends AP at time (t+Y3) CSI-RS3.

In order to enable the UE to accurately receive multiple preset aperiodic reference signals, it is necessary to indicate to the UE a set of transmission time offset values of the multiple preset aperiodic reference signals.

In the embodiment of the present application, the method further includes: instructing the UE to send a set of time offset values;

Wherein, the manner of instructing the UE to send the time offset value set includes one of the following:

Instruct the UE to send a set of time offset values through the first DCI signaling;

Instruct the UE to send the set of time offset values through the third DCI signaling;

Instruct the UE to send the set of time offset values through the second RRC signaling;

The set of sending time offset values is specified by a fourth preset protocol.

In this embodiment of the present invention, the first DCI signaling is further configured to determine a BWP set of multiple preset aperiodic reference signals when triggering to send multiple preset aperiodic reference signals to the UE, where the BWP set includes multiple preset aperiodic reference signals The BWP of each preset aperiodic reference signal in the preset aperiodic reference signals, wherein the BWP includes one of the following: a first activated BWP and a default BWP.

In order to enable the UE to receive multiple preset aperiodic reference signals accurately, it is necessary to indicate to the UE the BWP sets of the multiple preset aperiodic reference signals.

It should be noted that the manner of indicating to the UE the BWP sets of multiple preset aperiodic reference signals can be determined according to the actual situation, and is not specifically limited here.

By generating first DCI signaling, where the first DCI signaling is used to trigger sending of multiple preset aperiodic reference signals to the UE, and when the UE receives the first DCI signaling and the SCell of the UE is not activated, The UE is instructed to receive a preset aperiodic reference signal on an inactive SCell, thereby effectively avoiding the problem of UE timing disorder.

Step S820, sending the first DCI signaling.

After generating the first DCI signaling, the network side sends the first DCI signaling to the UE, so that after receiving the first DCI signaling, the UE triggers to receive the preset aperiodic reference signal, and when the UE receives the first DCI signaling If the SCell of the UE is not activated, it indicates that the UE can receive the preset aperiodic reference signal on the inactive SCell.

By generating first DCI signaling, wherein the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and in the case that the UE receives the first DCI signaling and the SCell of the UE is not activated, instructs the UE The preset aperiodic reference signal is received on the inactive SCell, thereby effectively avoiding the problem of UE timing disorder.

FIG. 9 is a schematic flowchart of another reference signal configuration method according to an embodiment of the present invention. The method is applied to a terminal device, and the method includes:

Step S910: Receive the first DCI signaling, where the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and when the UE receives the first DCI signaling and the UE's SCell is not activated, indicating The UE receives a preset aperiodic reference signal on an inactive SCell.

The UE receives the first DCI signaling sent by the network side device, and then triggers the reception of a preset aperiodic reference signal according to the first DCI signaling, and when the UE receives the first DCI signaling and the UE's SCell is not activated Next, it is indicated that the UE can receive the preset aperiodic reference signal on the inactive SCell.

In this embodiment of the present invention, the preset aperiodic reference signal includes one of the following: AP TRS and AP CSI-RS, where the AP TRS is used to perform time-frequency tracking on the SCell, and the AP CSI-RS is used to perform channel measurement on the SCell .

The first DCI signaling includes but is not limited to the following two:

In this embodiment of the present invention, the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal; at the moment corresponding to the transmission time offset value of the preset aperiodic reference signal relative to the first DCI signaling, the UE receives the preset aperiodic reference signal. Suppose an aperiodic reference signal, wherein the sending time offset value is used to represent the time difference between sending the first DCI signaling and sending a preset aperiodic reference signal.

After receiving the first DCI signaling, the UE receives the preset aperiodic reference signal at a time corresponding to the transmission time offset value of the preset aperiodic reference signal relative to the first DCI signaling.

For example, the preset aperiodic reference signal is AP CSI-RS. The transmission time offset value of the AP CSI-RS relative to the first DCI signaling is Y. Then, after receiving the first DCI signaling at time t, the UE receives the AP CSI-RS at time (t+Y). If the SCell is not activated at time (t+Y), the UE can receive the AP CSI-RS on the inactive SCell.

In order to enable the UE to accurately receive the preset aperiodic reference signal, the UE needs to determine the transmission time offset value of the preset aperiodic reference signal.

In the embodiment of the present application, the method further includes: determining a sending time offset value;

Wherein, the manner of determining the sending time offset value includes one of the following:

The transmission time offset value is determined by first DCI signaling, wherein the first DCI signaling is used to indicate the transmission time offset value to the UE;

receiving second DCI signaling, wherein the second DCI signaling is used to indicate to the UE to send a time offset value;

receiving the first RRC signaling, wherein the first RRC signaling is used to indicate to the UE to send a time offset value;

The transmission time offset value is specified by the third preset protocol.

In this embodiment of the present invention, the method further includes: determining a BWP of a preset aperiodic reference signal, where the BWP includes one of the following: a first activated BWP and a default BWP.

Wherein, the BWP of the preset aperiodic reference signal is preset by the network side device and indicated to the UE.

It should be noted that the manner in which the UE determines the BWP of the preset aperiodic reference signal depends on the manner in which the network side device indicates the BWP of the preset aperiodic reference signal to the UE, which may be determined according to the actual situation, which is not specifically limited here.

By receiving the first DCI signaling, wherein the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and when the UE receives the first DCI signaling and the SCell of the UE is not activated, instruct the UE The preset aperiodic reference signal is received on the inactive SCell, thereby effectively avoiding the problem of UE timing disorder.

The second:

In this embodiment of the present invention, the first DCI signaling is used to trigger the UE to receive multiple preset aperiodic reference signals; when the multiple preset aperiodic reference signals are relative to the set of sending time offset values of the first DCI signaling, At multiple times, multiple preset aperiodic reference signals are received, wherein the set of sending time offset values includes a sending time offset value of each preset aperiodic reference signal in the multiple preset aperiodic reference signals, and each The sending time offset value of the preset aperiodic reference signal is used to represent the time difference between sending the first DCI signaling and sending each preset aperiodic reference signal.

After the UE receives the first DCI signaling, and reaches the time corresponding to the transmission time offset value of each preset aperiodic reference signal relative to the first DCI signaling among the multiple preset aperiodic reference signals, the UE receives each preset aperiodic reference signal. Set the aperiodic reference signal.

For example, the multiple preset aperiodic reference signals are AP CSI-RS 1, AP CSI-RS 2, and AP CSI-RS 3. The set of sending time offset values of the plurality of preset preset aperiodic reference signals includes: a first sending time offset value Y1, which represents a sending time offset value of APCSI-RS 1 relative to the first DCI signaling; a second sending time offset value Y1; The transmission time offset value Y2 represents the transmission time offset value of the AP CSI-RS2 relative to the first DCI signaling; the third transmission time offset value Y3 represents the transmission time of the AP CSI-RS relative to the first DCI signaling offset value. Then, after receiving the first DCI signaling at time n, the UE receives AP CSI-RS 1 at time (n+Y1); receives AP CSI-RS 2 at time (n+Y2); receives AP at time (n+Y3) CSI-RS3. If the SCell is activated when the UE receives a certain AP CSI-RS, the UE may receive the AP CSI-RS on the inactive SCell.

In order for the UE to accurately receive multiple preset aperiodic reference signals, the UE needs to determine a set of transmission time offset values of the multiple preset aperiodic reference signals.

In the embodiment of the present application, the method further includes: determining a set of sending time offset values;

Wherein, the manner of instructing the UE to send the time offset value set includes one of the following:

The way to determine the set of send time offset values includes one of the following:

Determine the set of sending time offset values by using the first DCI signaling, wherein the first DCI signaling is used to indicate to the UE to send the set of time offset values;

receiving a third DCI signaling, wherein the third DCI signaling is used to indicate to the UE to send a time offset value set;

receiving second RRC signaling, wherein the second RRC signaling is used to indicate to the UE to send a time offset value set;

The set of sending time offset values is specified by a fourth preset protocol.

In this embodiment of the present invention, the method further includes: determining a BWP set of multiple preset aperiodic reference signals, where the BWP set includes a BWP of each preset aperiodic reference signal among the multiple preset aperiodic reference signals , where the BWP includes one of the following: a first activated BWP and a default BWP.

Wherein, the BWP sets of multiple preset aperiodic reference signals are preset by the network side device and indicated to the UE.

It should be noted that the manner in which the UE determines the BWP sets of the multiple preset aperiodic reference signals depends on the manner in which the network side device indicates the BWP sets of the multiple preset aperiodic reference signals to the UE, which can be determined according to the actual situation. Make specific restrictions.

By receiving the first DCI signaling, where the first DCI signaling is used to trigger the UE to receive multiple preset aperiodic reference signals, and when the UE receives the first DCI signaling and the SCell of the UE is not activated, indicating The UE receives the preset aperiodic reference signal on the inactive SCell, thereby effectively avoiding the problem of UE timing disorder.

It should be noted that, in the foregoing method embodiment 2, the first DCI signaling, the second DCI signaling, and the third DCI signaling may be the same or different; the first RRC signaling and the second RRC signaling may be The same or different; the third preset protocol and the fourth preset protocol may be the same or different, which are not specifically limited here.

In the second embodiment of the above method, the sending time offset value is greater than the preset value; the preset value includes one of the following: a value reported by the UE, a network configuration value, and a protocol agreed value.

Example 3

FIG. 10 is a schematic structural diagram of a network side device according to an embodiment of the present invention. The network side device 100 as shown in Figure 10 includes:

A generating module 101, configured to generate a first MAC CE signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger sending a preset aperiodic reference signal to the UE;

The sending module 102 is configured to send the first MAC CE signaling.

Optionally, the first MAC CE signaling is used to trigger sending a preset aperiodic reference signal to the UE;

The sending module 102 is further configured to send the preset aperiodic reference signal at the moment corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, wherein the sending time offset value is used to indicate The time difference between sending the first MAC CE signaling and sending the preset aperiodic reference signal.

Optionally, the network side device 100 further includes:

a first indicating module, configured to indicate the sending time offset value to the UE;

Wherein, the first indication module is specifically used for:

Indicate the sending time offset value to the UE through the first MAC CE signaling; or,

Instruct the UE to send the time offset value through the second MAC CE signaling or the first RRC signaling; or,

Indicate to the UE an index of multiple preset transmission time offset values through the second RRC signaling, and indicate to the UE the index of the transmission time offset value through the third MACCE signaling; or,

The transmission time offset value is specified by the first preset protocol.

Optionally, the first MAC CE signaling is used to trigger sending multiple preset aperiodic reference signals to the UE;

The sending unit 102 is further configured to send multiple preset aperiodic reference signals at multiple times corresponding to the set of sending time offset values of multiple preset aperiodic reference signals relative to the first MAC CE signaling, wherein sending The time offset value set includes the sending time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the sending time offset value of each preset aperiodic reference signal is used to indicate that the first The time difference between a MAC CE signaling and sending each preset aperiodic reference signal.

Optionally, the sending time offset value is greater than a preset value;

The preset value includes one of the following: a UE reported value, a network configuration value, and a protocol agreed value.

Optionally, the network side device 100 further includes:

a second indication module, configured to instruct the UE to send a set of time offset values;

Wherein, the second indication module is specifically used for:

Instruct the UE to send the set of time offset values through the first MAC CE signaling; or,

Instruct the UE to send the set of time offset values through the fourth MAC CE signaling or the third RRC signaling; or,

Indicate to the UE an index of a plurality of preset transmission time offset values through the fourth RRC signaling; and indicate to the UE through the fifth MACCE signaling the index of each transmission time offset value in the transmission time offset value set; or,

The set of sending time offset values is specified by the second preset protocol.

Optionally, the preset aperiodic reference signal includes one of the following: AP TRS, AP CSI-RS;

The AP TRS is used for time-frequency tracking on the SCell, and the AP CSI-RS is used for channel measurement on the SCell.

The network side device 100 provided in this embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of FIG. 2 , and to avoid repetition, details are not described here.

FIG. 11 is a schematic structural diagram of another network side device according to an embodiment of the present invention. The network side device 110 as shown in FIG. 11 includes:

The generating module 111 is configured to generate a first DCI signaling, wherein the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and when the UE receives the first DCI signaling and the SCell of the UE is not activated In this case, the UE is instructed to receive a preset aperiodic reference signal on an inactive SCell;

The sending module 112 is configured to send the first DCI signaling.

Optionally, the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE;

The sending module 112 is further configured to send the preset aperiodic reference signal at the moment corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first DCI signaling, wherein the sending time offset value is used to indicate the sending time The time difference between the first DCI signaling and the sending of the preset aperiodic reference signal.

Optionally, the network side device 110 further includes:

a third indicating module, configured to indicate the sending time offset value to the UE;

Among them, the third indication module is specifically used for:

Indicate the sending time offset value to the UE through the first DCI signaling; or,

Instruct the UE to send the time offset value through the second DCI signaling; or,

Indicate the sending time offset value to the UE through the first RRC signaling; or,

The transmission time offset value is specified by the third preset protocol.

Optionally, the first DCI signaling is used to trigger sending of multiple preset aperiodic reference signals to the UE;

The sending module 112 is further configured to send multiple preset aperiodic reference signals at multiple times corresponding to the set of sending time offset values of multiple preset aperiodic reference signals relative to the first DCI signaling, wherein the sending time The offset value set includes a sending time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the sending time offset value of each preset aperiodic reference signal is used to indicate that the first The time difference between DCI signaling and sending each preset aperiodic reference signal.

Optionally, the sending time offset value is greater than a preset value;

The preset value includes one of the following: a UE reported value, a network configuration value, and a protocol agreed value.

Optionally, the network side device 110 further includes:

a fourth indication module, configured to instruct the UE to send a set of time offset values;

Among them, the fourth indication module is specifically used for:

Instruct the UE to send the set of time offset values through the first DCI signaling; or,

Instruct the UE to send the set of time offset values through the third DCI signaling; or,

Instruct the UE to send the set of time offset values through the second RRC signaling; or,

The set of sending time offset values is specified by a fourth preset protocol.

Optionally, the preset aperiodic reference signal includes one of the following: AP TRS, AP CSI-RS;

The AP TRS is used for time-frequency tracking on the SCell, and the AP CSI-RS is used for channel measurement on the SCell.

The network-side device 110 provided in this embodiment of the present invention can implement each process implemented by the network-side device in the method embodiment of FIG. 8 , which is not repeated here to avoid repetition.

Example 4

FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 120 as shown in Figure 12 includes:

The receiving module 121 is configured to receive the first MAC CE signaling, wherein the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger the UE to receive a preset aperiodic reference signal.

Optionally, the first MAC CE signaling is used to trigger the UE to receive a preset aperiodic reference signal;

The receiving module 121 is specifically used for:

The preset aperiodic reference signal is received at the moment corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, wherein the sending time offset value is used to indicate that the first MAC CE signaling is sent The time difference between sending the preset aperiodic reference signal.

Optionally, the terminal device 120 further includes:

a first determining module, configured to determine a sending time offset value;

Wherein, the first determination module is specifically used for:

The transmission time offset value is determined through the first MAC CE signaling, wherein the first MAC CE signaling is used to indicate the transmission time offset value to the UE; or,

receiving the second MAC CE signaling or the first RRC signaling, wherein the second MAC CE signaling and the first RRC signaling are used to instruct the UE to send a time offset value; or,

Receive second RRC signaling and third MAC CE signaling, where the second RRC signaling is used to indicate to the UE multiple indices of preset transmission time offset values, and the third MAC CE signaling is used to indicate to the UE to send the index of the time offset value; or,

The transmission time offset value is specified by the first preset protocol.

Optionally, the first MAC CE signaling is used to trigger the UE to receive multiple preset aperiodic reference signals;

The receiving module 121 is specifically used for:

Receive multiple preset aperiodic reference signals at multiple times corresponding to the set of sending time offset values of the multiple preset aperiodic reference signals relative to the first MAC CE signaling, wherein the set of sending time offset values includes: The sending time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the sending time offset value of each preset aperiodic reference signal is used to indicate that the sending of the first MAC CE signaling and the sending The time difference between each preset aperiodic reference signal.

Optionally, the sending time offset value is greater than a preset value;

The preset value includes one of the following: a UE reported value, a network configuration value, and a protocol agreed value.

Optionally, the terminal device 120 further includes:

a second determining module, configured to determine a set of sending time offset values;

Wherein, the second determination module is specifically used for:

The set of sending time offset values is determined through the first MAC CE signaling, where the first MAC CE signaling is used to indicate the set of sending time offset values to the UE; or,

receiving the fourth MAC CE signaling or the third RRC signaling, where the fourth MAC CE signaling and the third RRC signaling are used to instruct the UE to send the time offset value set; or,

Receive fourth RRC signaling and fifth MAC CE signaling, where the fourth RRC signaling is used to indicate to the UE multiple indices of preset transmission time offset values, and the fifth MAC CE signaling is used to indicate to the UE to send the index of each transmit time offset value in the set of time offset values; or,

The set of sending time offset values is specified by the second preset protocol.

Optionally, the preset aperiodic reference signal includes one of the following: AP TRS, AP CSI-RS;

The AP TRS is used for time-frequency tracking on the SCell, and the AP CSI-RS is used for channel measurement on the SCell.

The terminal device 120 provided in this embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 5 , and in order to avoid repetition, details are not repeated here.

FIG. 13 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. The terminal device 130 as shown in Figure 13 includes:

A receiving module 131, configured to receive first DCI signaling, where the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and when the UE receives the first DCI signaling and the SCell of the UE is not activated Next, the UE is instructed to receive a preset aperiodic reference signal on the inactive SCell.

Optionally, the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal;

The receiving module 131 is specifically used for:

The preset aperiodic reference signal is received at the moment corresponding to the sending time offset value of the preset aperiodic reference signal relative to the first DCI signaling, wherein the sending time offset value is used to indicate that sending the first DCI signaling and sending the first DCI signaling Preset the time difference between aperiodic reference signals.

Optionally, the terminal device 130 further includes:

a third determining module, configured to determine the sending time offset value;

Among them, the third determination module is specifically used for:

The transmission time offset value is determined through the first DCI signaling, wherein the first DCI signaling is used to indicate the transmission time offset value to the UE; or,

receiving second DCI signaling, where the second DCI signaling is used to indicate to the UE to send a time offset value; or,

receiving first RRC signaling, where the first RRC signaling is used to indicate to the UE to send a time offset value; or,

The transmission time offset value is specified by the third preset protocol.

Optionally, the first DCI signaling is used to trigger the UE to receive multiple preset aperiodic reference signals;

The receiving module 131 is specifically used for:

Receive multiple preset aperiodic reference signals at multiple times corresponding to the set of sending time offset values of the multiple preset aperiodic reference signals relative to the first DCI signaling, wherein the set of sending time offset values includes multiple preset aperiodic reference signals. The sending time offset value of each preset aperiodic reference signal among the preset aperiodic reference signals, and the sending time offset value of each preset aperiodic reference signal is used to indicate that sending the first DCI signaling and sending each Preset the time difference between aperiodic reference signals.

Optionally, the sending time offset value is greater than a preset value;

The preset value includes one of the following: a UE reported value, a network configuration value, and a protocol agreed value.

Optionally, the terminal device 130 further includes:

a fourth determining module, configured to determine a set of sending time offset values;

Among them, the fourth determination module is specifically used for:

The set of sending time offset values is determined through the first DCI signaling, wherein the first DCI signaling is used to indicate the set of sending time offset values to the UE; or,

receiving third DCI signaling, wherein the third DCI signaling is used to indicate to the UE to send a time offset value set; or,

receiving second RRC signaling, where the second RRC signaling is used to indicate to the UE to send a set of time offset values; or,

The set of sending time offset values is specified by a fourth preset protocol.

Optionally, the preset aperiodic reference signal includes one of the following: AP TRS, AP CSI-RS;

The AP TRS is used for time-frequency tracking on the SCell, and the AP CSI-RS is used for channel measurement on the SCell.

The terminal device 130 provided in this embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 9 , and to avoid repetition, details are not repeated here.

Example 5

FIG. 14 is a schematic diagram of a hardware structure of a network side device according to an embodiment of the present invention. The network side device 1400 shown in FIG. 14 can implement the details of the method embodiment shown in FIG. 2 and/or FIG. 8, and achieve the same effect. The network side device 1400 includes: a processor 1401, a transceiver 1402, a memory 1403, a user interface 1404 and a bus interface, wherein:

In the embodiment of the present invention, the network side device 1400 also includes: a computer program stored on the memory 1403 and running on the processor 1401, the computer program being executed by the processor 1401, and implementing the following steps:

Generate first MAC CE signaling, where the first MAC CE signaling is used to activate the secondary cell SCell of the terminal device UE, and is used to trigger sending a preset aperiodic reference signal to the UE; send the first MAC CE signaling.

and / or,

Generate first DCI signaling, where the first DCI signaling is used to trigger sending a preset aperiodic reference signal to the UE, and in the case where the UE receives the first DCI signaling and the SCell of the UE is not activated, instructs the UE to The preset aperiodic reference signal is received on the inactive SCell; the first DCI signaling is sent.

In Figure 14, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1401 and various circuits of memory represented by memory 1403 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and will not be described further herein. The bus interface provides the interface. Transceiver 1402 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 1404 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1401 is responsible for managing the bus architecture and general processing, and the memory 1403 may store data used by the processor 1401 in performing operations.

The network-side device 1400 can implement each process implemented by the network-side device in the embodiments shown in the foregoing FIG. 2 and/or FIG. 8 , and to avoid repetition, details are not described here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the method embodiment shown in FIG. 2 and/or FIG. 8 is implemented. , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

FIG. 15 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention. The terminal device 1500 shown in FIG. 15 includes: at least one processor 1501, memory 1502, at least one network interface 1504 and user interface 1503. The various components in end device 1500 are coupled together by bus system 1505. It will be appreciated that the bus system 1505 is used to implement the connection communication between these components. In addition to the data bus, the bus system 1505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus system 1505 in FIG. 15 .

Among them, the user interface 1503 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touch pad or a touch screen, etc.).

It is understood that the memory 1502 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache memory. By way of example and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (DoubleData Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1502 of the systems and methods described in embodiments of the present invention is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 1502 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them: an operating system 15021 and applications 15022.

Among them, the operating system 15021 includes various system programs, such as the framework layer, the core library layer, the driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 15022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. The program for implementing the method of the embodiment of the present invention may be included in the application program 15022 .

In the embodiment of the present invention, the terminal device 1500 also includes: a computer program stored on the memory 1502 and running on the processor 1501, and the computer program is executed by the processor 1501 to realize the following steps:

receiving first MAC CE signaling, where the first MAC CE signaling is used to activate the SCell of the UE, and is used to trigger the UE to receive a preset aperiodic reference signal;

and / or,

Receive first DCI signaling, where the first DCI signaling is used to trigger the UE to receive a preset aperiodic reference signal, and in the case where the UE receives the first DCI signaling and the SCell of the UE is not activated, instructs the UE to The preset aperiodic reference signal is received on the activated SCell.

The methods disclosed in the above embodiments of the present invention may be applied to the processor 1501, or implemented by the processor 1501. The processor 1501 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 1501 or an instruction in the form of software. The above-mentioned processor 1501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers, and other computer-readable storage media that are mature in the art. The computer-readable storage medium is located in the memory 1502, and the processor 1501 reads the information in the memory 1502, and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1501, each step of the method embodiment shown in FIG. 5 and/or FIG. 9 is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP Device, DSPD), programmable logic Devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present invention or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (such as procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

The terminal device 1500 can implement each process implemented by the terminal device in the embodiment shown in the foregoing FIG. 5 and/or FIG. 9 , and in order to avoid repetition, details are not repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, each process of the method embodiment shown in FIG. 5 and/or FIG. 9 is implemented. , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprises a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on such understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network side device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (40)

1. A reference signal configuration method is applied to network side equipment, and is characterized by comprising the following steps:

generating a first media access control (MAC CE) signaling, wherein the first MAC CE signaling is used for activating a secondary cell (SCell) of a terminal device (UE) and triggering the UE to send a preset aperiodic reference signal;

and transmitting the first MAC CE signaling.

2. The method of claim 1, wherein the first MAC CE signaling is used to trigger sending of a preset aperiodic reference signal to the UE;

and transmitting the preset aperiodic reference signal at a time corresponding to a transmission time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, wherein the transmission time offset value is used for representing a time difference between the transmission of the first MAC CE signaling and the transmission of the preset aperiodic reference signal.

3. The method of claim 2, wherein the method further comprises:

indicating the transmit time offset value to the UE;

wherein the manner of indicating the transmission time offset value to the UE comprises one of:

indicating the transmission time offset value to the UE through the first MAC CE signaling;

indicating the transmission time offset value to the UE through second MAC CE signaling or first Radio Resource Control (RRC) signaling;

indicating the indexes of a plurality of preset transmission time deviation values to the UE through a second RRC signaling, and indicating the indexes of the transmission time deviation values to the UE through a third MACCE signaling;

the transmission time offset value is specified by a first preset protocol.

4. The method of claim 1, wherein the first MAC CE signaling is used to trigger sending a plurality of preset aperiodic reference signals to the UE;

and transmitting the plurality of preset aperiodic reference signals at a plurality of moments corresponding to a transmission time offset value set of the plurality of preset aperiodic reference signals relative to the first MAC CE signaling, where the transmission time offset value set includes a transmission time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the transmission time offset value of each preset aperiodic reference signal is used to represent a time difference between transmission of the first MAC CE signaling and transmission of each preset aperiodic reference signal.

5. The method of claim 2 or 4, wherein the transmission time offset value is greater than a preset value;

the preset value comprises one of the following: UE reported values, network configuration values, protocol provisioning values.

6. The method of claim 4, wherein the method further comprises:

indicating the set of transmission time offset values to the UE;

wherein the manner of indicating the set of transmission time offset values to the UE comprises one of:

indicating the set of transmission time offset values to the UE through the first MAC CE signaling;

indicating the set of transmission time offset values to the UE through fourth MAC CE signaling or third RRC signaling;

indicating indexes of a plurality of preset transmission time offset values to the UE through a fourth RRC signaling; and indicating to the UE, by fifth mac ce signaling, an index of each of the transmission time offset values in the set of transmission time offset values;

the set of transmission time offset values is specified by a second predetermined protocol.

7. The method of claim 1, wherein the predetermined aperiodic reference signal comprises one of: an aperiodic tracking reference signal AP TRS and an aperiodic channel state information reference signal AP CSI-RS;

the AP TRS is used for performing time-frequency tracking on the SCell, and the AP CSI-RS is used for performing channel measurement on the SCell.

8. A reference signal configuration method is applied to terminal equipment and is characterized by comprising the following steps:

receiving first MAC CE signaling, wherein the first MAC CE signaling is used for activating an SCell of a UE and triggering the UE to receive a preset aperiodic reference signal.

9. The method of claim 8, wherein the first MAC CE signaling is used to trigger the UE to receive a preset aperiodic reference signal;

and receiving the preset aperiodic reference signal at a time corresponding to a transmission time offset value of the preset aperiodic reference signal relative to the first MAC CE signaling, wherein the transmission time offset value is used for representing a time difference between the transmission of the first MAC CE signaling and the transmission of the preset aperiodic reference signal.

10. The method of claim 9, wherein the method further comprises:

determining the transmit time offset value;

wherein the manner of determining the transmission time offset value comprises one of:

determining the transmission time offset value through the first MAC CE signaling, wherein the first MAC CE signaling is used for indicating the transmission time offset value to the UE;

receiving a second MAC CE signaling or a first RRC signaling, wherein the second MAC CE signaling and the first RRC signaling are used for indicating the transmission time offset value to the UE;

receiving second RRC signaling and third MAC CE signaling, wherein the second RRC signaling is used for indicating indexes of a plurality of preset transmission time offset values to the UE, and the third MAC CE signaling is used for indicating the indexes of the transmission time offset values to the UE;

the transmission time offset value is specified by a first preset protocol.

11. The method of claim 8, wherein the first MAC CE signaling is for triggering the UE to receive a plurality of preset aperiodic reference signals;

receiving the plurality of preset aperiodic reference signals at a plurality of moments corresponding to a transmission time offset value set of the plurality of preset aperiodic reference signals relative to the first MAC CE signaling, where the transmission time offset value set includes a transmission time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the transmission time offset value of each preset aperiodic reference signal is used to represent a time difference between transmission of the first MAC CE signaling and transmission of each preset aperiodic reference signal.

12. The method of claim 9 or 11, wherein the transmission time offset value is greater than a preset value;

the preset value comprises one of the following: UE reported values, network configuration values, protocol provisioning values.

13. The method of claim 11, wherein the method further comprises:

determining the set of transmission time offset values;

wherein the manner of determining the set of transmission time offset values comprises one of:

determining the set of transmission time offset values through the first MAC CE signaling, wherein the first MAC CE signaling is used for indicating the set of transmission time offset values to the UE;

receiving fourth MAC CE signaling or third RRC signaling, wherein the fourth MAC CE signaling and the third RRC signaling are used for indicating the transmission time offset value set to the UE;

receiving fourth RRC signaling and fifth MAC CE signaling, wherein the fourth RRC signaling is used for indicating an index of a plurality of preset transmission time offset values to the UE, and the fifth MAC CE signaling is used for indicating an index of each transmission time offset value in the transmission time offset value set to the UE;

the set of transmission time offset values is specified by a second predetermined protocol.

14. The method of claim 8, wherein the predetermined aperiodic reference signal comprises one of: APTRS, AP CSI-RS;

the AP TRS is used for performing time-frequency tracking on the SCell, and the AP CSI-RS is used for performing channel measurement on the SCell.

15. A reference signal configuration method is applied to network side equipment, and is characterized by comprising the following steps:

generating a first downlink control DCI signaling, wherein the first DCI signaling is used for triggering sending of a preset aperiodic reference signal to a UE, and indicating the UE to receive the preset aperiodic reference signal on an inactive SCell under the condition that the UE receives the first DCI signaling and the SCell of the UE is inactive;

and sending the first DCI signaling.

16. The method of claim 15, wherein the first DCI signaling is used to trigger sending of one preset aperiodic reference signal to the UE;

and transmitting the preset aperiodic reference signal at a time corresponding to a transmission time offset value of the preset aperiodic reference signal relative to the first DCI signaling, wherein the transmission time offset value is used for indicating a time difference between the transmission of the first DCI signaling and the transmission of the preset aperiodic reference signal.

17. The method of claim 16, wherein the method further comprises:

indicating the transmit time offset value to the UE;

wherein the manner of indicating the transmission time offset value to the UE comprises one of:

indicating the transmit time offset value to the UE through the first DCI signaling;

indicating the transmission time offset value to the UE through second DCI signaling;

indicating the transmission time offset value to the UE through first RRC signaling;

the transmission time offset value is specified by a third predetermined protocol.

18. The method of claim 15, wherein the first DCI signaling is used to trigger transmission of a plurality of preset aperiodic reference signals to the UE;

and transmitting the plurality of preset aperiodic reference signals at a plurality of moments corresponding to a transmission time offset value set of the plurality of preset aperiodic reference signals relative to the first DCI signaling, where the transmission time offset value set includes a transmission time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the transmission time offset value of each preset aperiodic reference signal is used to represent a time difference between transmission of the first DCI signaling and transmission of each preset aperiodic reference signal.

19. The method of claim 16 or 18, wherein the transmission time offset value is greater than a preset value;

the preset value comprises one of the following: UE reported values, network configuration values, protocol provisioning values.

20. The method of claim 18, wherein the method further comprises:

indicating the set of transmission time offset values to the UE;

wherein the manner of indicating the set of transmission time offset values to the UE comprises one of:

indicating the set of transmission time offset values to the UE through the first DCI signaling;

indicating the set of transmission time offset values to the UE by third DCI signaling;

indicating the set of transmission time offset values to the UE through second RRC signaling;

the set of transmission time offset values is specified by a fourth predetermined protocol.

21. The method of claim 15, wherein the predetermined aperiodic reference signal comprises one of: AP TRS, AP CSI-RS;

the AP TRS is used for performing time-frequency tracking on the SCell, and the AP CSI-RS is used for performing channel measurement on the SCell.

22. A reference signal configuration method is applied to terminal equipment and is characterized by comprising the following steps:

receiving a first DCI signaling, wherein the first DCI signaling is used for triggering UE to receive a preset aperiodic reference signal, and indicating the UE to receive the preset aperiodic reference signal on an inactive SCell under the condition that the UE receives the first DCI signaling and the SCell of the UE is inactive.

23. The method of claim 22, wherein the first DCI signaling is used to trigger the UE to receive one preset aperiodic reference signal;

and receiving the preset aperiodic reference signal at a time corresponding to a transmission time offset value of the preset aperiodic reference signal relative to the first DCI signaling, wherein the transmission time offset value is used for representing a time difference between the transmission of the first DCI signaling and the transmission of the preset aperiodic reference signal.

24. The method of claim 23, wherein the method further comprises:

determining the transmit time offset value;

wherein the manner of determining the transmission time offset value comprises one of:

determining the transmission time offset value through the first DCI signaling, wherein the first DCI signaling is used for indicating the transmission time offset value to the UE;

receiving a second DCI signaling, wherein the second DCI signaling is used for indicating the transmission time offset value to the UE;

receiving first RRC signaling, wherein the first RRC signaling is used for indicating the transmission time offset value to the UE;

the transmission time offset value is specified by a third predetermined protocol.

25. The method of claim 24, wherein the first DCI signaling is used to trigger the UE to receive a plurality of preset aperiodic reference signals;

receiving the plurality of preset aperiodic reference signals at a plurality of moments corresponding to a set of transmission time offset values of the plurality of preset aperiodic reference signals relative to the first DCI signaling, where the set of transmission time offset values includes a transmission time offset value of each preset aperiodic reference signal in the plurality of preset aperiodic reference signals, and the transmission time offset value of each preset aperiodic reference signal is used to represent a time difference between transmission of the first DCI signaling and transmission of each preset aperiodic reference signal.

26. The method of claim 23 or 25, wherein the transmission time offset value is greater than a preset value;

the preset value comprises one of the following: UE reported values, network configuration values, protocol provisioning values.

27. The method of claim 25, wherein the method further comprises:

determining the set of transmission time offset values;

wherein the manner of determining the set of transmission time offset values comprises one of:

determining the set of transmission time offset values through the first DCI signaling, wherein the first DCI signaling is used for indicating the set of transmission time offset values to the UE;

receiving third DCI signaling, wherein the third DCI signaling is used for indicating the transmission time offset value set to the UE;

receiving second RRC signaling, wherein the second RRC signaling is used for indicating the transmission time offset value set to the UE;

the set of transmission time offset values is specified by a fourth predetermined protocol.

28. The method of claim 22, wherein the predetermined aperiodic reference signal comprises one of: AP TRS, AP CSI-RS;

the AP TRS is used for performing time-frequency tracking on the SCell, and the AP CSI-RS is used for performing channel measurement on the SCell.

29. A network-side device, comprising:

a generating module, configured to generate a first MAC CE signaling, where the first MAC CE signaling is used to activate an SCell of a UE and trigger sending of a preset aperiodic reference signal to the UE;

and the sending module is used for sending the first MAC CE signaling.

30. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 7.

31. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.

32. A terminal device, comprising:

the apparatus includes a receiving module configured to receive a first MAC CE signaling, where the first MAC CE signaling is used to activate an SCell of a UE and trigger the UE to receive a preset aperiodic reference signal.

33. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 8 to 14.

34. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 8 to 14.

35. A network-side device, comprising:

a generating module, configured to generate a first DCI signaling, where the first DCI signaling is used to trigger sending of a preset aperiodic reference signal to a UE, and instruct the UE to receive the preset aperiodic reference signal on an inactive SCell when the UE receives the first DCI signaling and the SCell of the UE is inactive;

and a sending module, configured to send the first DCI signaling.

36. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any of claims 15 to 21.

37. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 15 to 21.

38. A terminal device, comprising:

the apparatus includes a receiving module, configured to receive a first DCI signaling, where the first DCI signaling is used to trigger a UE to receive a preset aperiodic reference signal, and instruct the UE to receive the preset aperiodic reference signal on an inactive SCell when the UE receives the first DCI signaling and the SCell of the UE is inactive.

39. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any of claims 22 to 28.

40. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 22 to 28.

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