CN110149187B - Method for acquiring aperiodic channel sounding reference signal - Google Patents
Method for acquiring aperiodic channel sounding reference signal Download PDFInfo
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- CN110149187B CN110149187B CN201810151382.6A CN201810151382A CN110149187B CN 110149187 B CN110149187 B CN 110149187B CN 201810151382 A CN201810151382 A CN 201810151382A CN 110149187 B CN110149187 B CN 110149187B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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Abstract
If the aperiodic channel sounding reference signal needs to be obtained, configuring the transmission configuration index state of an aperiodic channel state information reference signal corresponding to the aperiodic channel sounding reference signal; generating an aperiodic channel state information reference signal corresponding to a channel sounding reference signal according to the transmission configuration index state; transmitting the aperiodic channel state information reference signal; and receiving the channel detection reference signal information returned according to the aperiodic channel state information reference signal.
Description
Technical Field
The embodiment of the invention relates to the field of mobile communication, in particular to a method for acquiring an aperiodic channel sounding reference signal.
Background
The 5G New Radio technology (5G New Radio, 5G NR) supports Uplink non-codebook based Physical Uplink Shared Channel (PUSCH) transmission, and a Channel Sounding Reference Signal (SRS) needs to be configured before transmission. The base station sends a channel state information Reference Signal (CSI-RS) to a User Equipment (UE), the UE calculates the precoding information of the SRS according to the receiving condition of the CSI-RS, then sends the precoding information of the SRS to the base station, and the base station obtains uplink information state information according to the received SRS precoding information. In order to allow the UE to better receive the CSI-RS, a Transmission Configuration Index (TCI) state needs to be configured for the CSI-RS sent by the base station, and when the TCI state is configured for a certain CSI-RS, the CSI-RS and the source reference signal relate to a corresponding parameter QCL in a Quasi-co-location (QCL) type, that is, the CSI-RS and the source reference signal have the same parameter value for certain types.
In the prior art, there is no method for performing TCI configuration on an aperiodic CSI-RS associated with an aperiodic SRS, which may cause that a UE may only receive the CSI-RS blindly, and affect the performance of the UE.
Disclosure of Invention
The problem to be solved by the embodiments of the present invention is how to configure the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the SRS if the aperiodic SRS needs to be acquired.
In order to solve the above problem, an embodiment of the present invention provides a method for acquiring an aperiodic channel sounding reference signal, including, if an aperiodic channel sounding reference signal needs to be acquired, configuring a transmission configuration index state of an aperiodic channel state information reference signal corresponding to the aperiodic channel sounding reference signal, where the configuration transmission configuration index state indicates quasi-co-station information; generating an aperiodic channel state information reference signal corresponding to a channel sounding reference signal according to the transmission configuration index state; transmitting the aperiodic channel state information reference signal; and receiving the channel detection reference signal information returned according to the aperiodic channel state information reference signal.
Optionally, the configuring a transmission configuration index state of the aperiodic csi-rs corresponding to the csi-rs further includes: configuring a transmission configuration index state in a channel sounding reference signal triggering state through RRC.
Optionally, the configuring, by the RRC, a transmission configuration index state in a channel sounding reference signal trigger state includes: and configuring a transmission configuration index state for an aperiodic channel state information reference signal corresponding to the SRS-AssocCSIRS of each channel sounding reference signal resource set in each channel sounding reference signal trigger state according to a predetermined mode.
Optionally, the configuring a transmission configuration index state of the aperiodic csi-rs corresponding to the csi-rs includes: and implicitly indicating to configure the transmission configuration index state according to a preset mode through the SRS-spatialRelationInfo in the channel sounding reference signal resource configuration.
Optionally, the downlink signal corresponding to the SRS-spatialrelalationinfo in the channel sounding reference signal resource configuration includes: a periodic channel state information reference signal, a semi-persistent channel state information reference signal, or an SS/PBCH block.
Optionally, the configuring the transmission configuration index state of the aperiodic csi reference signal corresponding to the SRS comprises that the aperiodic csi reference signal corresponding to the SRS is quasi co-sited with the downlink reference signal corresponding to the SRS-spatialrelalationinfo in the resource configuration.
Optionally, the configuring a transmission configuration index state of the aperiodic csi-rs corresponding to the csi-rs includes: and configuring the transmission configuration index state according to a predetermined mode through SRS-spatialRelationInfo in the channel sounding reference signal resource configuration through RRC signaling.
Optionally, configuring, by the SRS-SpatialRelationInfo in the channel sounding reference signal resource configuration through RRC signaling, the transmission configuration index state according to the predetermined manner includes: indicating that the transmission configuration index state of the aperiodic CSI-RS corresponding to the SRS-AssocCSIRS of the channel sounding reference signal resource set in which the channel sounding reference signal resource is located is the transmission configuration index state.
Optionally, configuring, by RRC signaling, the transmission configuration index state according to the SRS-SpatialRelationInfo in the channel sounding reference signal resource configuration in a predetermined manner further includes: and indicating the beam direction for sending the SRS resource to be the receiving beam direction of the RS corresponding to the QCL-TypeD type in the transmission configuration index state.
The embodiment of the invention provides a method for acquiring an aperiodic channel sounding reference signal, which comprises the following steps: receiving an aperiodic channel state information reference signal, wherein the aperiodic channel state information reference signal comprises quasi co-station information; calculating channel sounding reference signal information according to the aperiodic channel state information reference signal; and sending the channel sounding reference signal information.
The embodiment of the invention also provides a method for acquiring the aperiodic channel sounding reference signal, if the channel sounding reference signal needs to be acquired, the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the channel sounding reference signal is configured; generating an aperiodic channel state information reference signal corresponding to a channel sounding reference signal according to the transmission configuration index state; sending the aperiodic channel state information reference signal to a user terminal; a user terminal receives a non-periodic channel state information reference signal, wherein the non-periodic channel state information reference signal comprises quasi co-station information; acquiring channel detection reference signal information according to the aperiodic channel state information reference signal; and sending the channel sounding reference signal information.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
the embodiment of the invention provides a method for configuring the transmission configuration index state of an aperiodic channel state information reference signal associated with an aperiodic channel sounding reference signal for uplink non-codebook transmission, which is used for standardizing the receiving behavior of UE, reducing the system loss and increasing the processing speed of a base station and the UE on signals.
Drawings
FIG. 1 is a diagram of SRS configuration for uplink non-codebook transmission;
fig. 2 is a schematic diagram of a triggerering state configuration of an aperiodic SRS according to an embodiment of the present invention; and
fig. 3 is a flowchart illustrating a method for acquiring an aperiodic SRS according to an embodiment of the present invention.
Detailed Description
The 5G New Radio technology (5G New Radio, 5G NR) supports uplink non-codebook based PUSCH transmission, and SRS needs to be configured before transmission. The detailed configuration process is as follows.
As shown in fig. 1, fig. 1 is a schematic diagram of an SRS configuration for uplink non-codebook transmission. First, the base station configures an SRS resource set (Sounding Reference Signal resource set, SRS resource set) for non-codebook transmission, which includes multiple single-port SRS resources (Sounding Reference Signal resource, SRS resource). And, the base station will correspond the SRS resource set to a CSI-RS through SRS-AssocCSIRS, which can be periodic, semi-persistent, or aperiodic CSI-RS. And after receiving the CSI-RS, the UE acquires a downlink channel according to the received CSI-RS, acquires an uplink channel based on channel reciprocity, calculates a precoding vector on each single-port SRS resource based on the downlink channel reciprocity, and sends out the SRS. The precoding vectors are used to form beams, and the SRS ports on each single-port SRS resource are mapped to all antennas of the UE, and digital beams are formed by weighting coefficients on different antennas. The SRS resource may be a periodic, semi-persistent, or aperiodic SRS resource, and if an SRS resource is an aperiodic SRS resource, the CSI-RS corresponding to the SRS resource is also an aperiodic SRS resource, that is, when an aperiodic SRS resource corresponds to an aperiodic CSI-RS through SRS-ascocsirs, a Downlink Control Information (DCI) triggering the aperiodic SRS transmission also triggers the transmission of the aperiodic CSI-RS.
It should be noted that the SRS-AssocCSIRS mentioned in the above description is an RRC parameter name specified in a Radio Resource Control (RRC) protocol.
It should be noted that "one Downlink Control Information (DCI) triggering the aperiodic SRS to transmit also triggers the transmission of the aperiodic CSI-RS" mentioned in the above description means that the same DCI triggers the SRS transmission of the base station and the UE, but the UE transmits the aperiodic SRS later than the base station transmits the CSI-RS because the SRS precoding needs to be determined based on the CSI-RS receiving condition. The DCI triggering SRS transmission by the UE here can be considered as a delayed trigger.
Secondly, each SRS resource indicates a beam direction for transmitting the SRS through spatialrelalationinfo. Specifically, if the domain is a downlink reference signal, the beam direction of the reference signal is received when the beam direction of the SRS is transmitted; if the domain is another SRS, the beam direction of the transmitting SRS is the beam direction of the transmitting indicated one SRS.
Thirdly, the process of acquiring the SRS by the base station involves receiving one downlink CSI-RS, so the QCL information of the CSI-RS needs to be indicated, so that the UE can better receive the CSI-RS, and therefore, the TCI state needs to be configured for the downlink CSI-RS.
Configuring the TCI state as referred to herein means informing the CSI-RS and the source reference signal as to which parameters QCL of the QCL type correspond. A TCI state contains one or more tuples, and a tuple can be in the form of { source reference signal, QCL type }. When the TCI state is configured for a certain CSI-RS, the CSI-RS and the source reference signal have two corresponding parameters QCL relative to QCL type.
For example, a certain TCI state is { CRI # 0, QCL-Type a }, which indicates that when a certain aperiodic CSI-RS is configured as the TCI state, it indicates that one CSI-RS corresponding to the aperiodic CSI-RS and CRI # 0 is related to a parameter QCL in QCL Type QCL-Type a. As another example, { SS/PBCH block # 1, QCL-Type D } indicates that when a certain periodic CSI-RS is configured in the TCI state, it indicates that one CSI-RS of the aperiodic CSI-RS corresponding to SS/PBCH block # 1 is related to a parameter QCL in QCL Type QCL-Type D. Wherein, CRI #0 represents CSI-RS resource index 0, that is, the identifier of the CRI-RS resource is 0; SS/PBCH block # 1 indicates that an identifier of a Synchronization signal (Synchronization signal)/Physical Broadcast Channel (PBCH) block is 1.
It should be noted that the two signals in the above description are identical with respect to certain parameters QCL representing those parameters of the two signals, so that one signal can be used to assist the reception of the other signal. These parameters, which may be the same, include average gain (average gain), average delay (average delay), delay spread (delay spread), Doppler shift (Doppler shift), Doppler spread (Doppler spread), and received spatial Rx parameter (spatial Rx parameter). Wherein, allow the same parameter allocation to be four groups, be QCL-Type A, QCL-Type B, QCL-Type C and QCL-Type D respectively, the same parameter that each Type QCL parameter allowed is respectively as follows:
QCL-Type A shows that the parameters of Doppler frequency offset, Doppler spread and average gain delay spread are the same.
QCL-Type B is the same for Doppler frequency offset and Doppler spread.
QCL-Type C is the same as the average delay and Doppler frequency shift.
QCL-Type D is that the receiving space parameters are the same.
For example, a CSI-RS corresponding to the aperiodic CSI-RS and CRI # 0 is the same with respect to the parameters QCL in QCL Type QCL-Type a, i.e. parameters representing doppler shift, doppler spread, and average gain delay spread of the CSI-RS corresponding to CRI # 0.
The parameter QCL in the QCL Type QCL-Type D, namely the receiving space parameter of the CSI-RS corresponding to the aperiodic CSI-RS and the SS/PBCH block # 1 is the same.
Existing protocol specifications have TCI configurations for periodic and semi-persistent CSI-RS, and also have some TCI configurations for aperiodic CSI-RS, but are missing for aperiodic CSI-RS associated with aperiodic SRS for uplink non-codebook transmission. Therefore, the embodiment of the present invention provides a method for configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS for uplink non-codebook transmission, so as to normalize the UE reception behavior and improve the UE performance.
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below.
The embodiment of the invention provides a method for acquiring an aperiodic SRS, wherein if the aperiodic SRS needs to be acquired, a TCI state of an aperiodic CSI-RS corresponding to the SRS is configured; generating an aperiodic CSI-RS corresponding to an SRS according to the TCI state; transmitting the CSI-RS; and receiving SRS information returned according to the CSI-RS.
In a specific implementation, the aperiodic SRS may be transmitted in an uplink non-codebook manner, and the aperiodic SRS corresponds to one CSI-RS through the SRS-AssocCSIRS. Wherein, the SRS-AssocCSIRS is an RRC parameter name defined in 38.331.
According to the invention, the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission is configured, so that the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
In some embodiments of the present invention, configuring the TCI state of the CSI-RS corresponding to the SRS further comprises: the TCI state is configured in SRS triggering states (SRS triggering states) by RRC.
In a specific implementation, configuring the TCI state in the SRS triggering states by RRC includes: and configuring the TCI state for the CSI-RS corresponding to the SRS-AssocCSIRS of each SRS resource set in each SRS triggering state according to a preset mode.
Here, when the predetermined scheme is to configure the TCI state and the QCL information between the parameters is specified, the QCL Type used is configured in the four types of QCL-Type a, QCL-Type B, QCL-Type C, and QCL-Type D as described above.
The above method will be explained below by a specific example. As shown in fig. 2, fig. 2 is a schematic diagram of a triggerering state configuration of an aperiodic SRS in the embodiment of the present invention.
Note that the TCI state in fig. 2 refers to a TCI state existing when the SRS for non-codebook uplink is associated with the aperiodic CSI-RS.
Existing SRS resource set 0 and SRS resource set 1. Assume that SRS resource set 0 corresponds to one aperiodic CSI-RS (CRI #0) through SRS-AssocCSIRS, and SRS resource set 1 corresponds to one periodic CSI-RS (CRI #1) through SRS-AssocCSIRS.
When the RRC configures the TCI state in the SRS triggering states, a column can be added in the SRS triggering states for describing the TCI state, and the configuration mode is suitable for the condition that the SRS resource set corresponds to an aperiodic CSI-RS through the SRS-AssocCSIRS.
As shown in fig. 2, codewords 01 and 10 may be assigned to SRS resource set 0, representing TCI states 0 and 1, respectively; codeword 11 is allocated to SRS resource set 1, and since the SRS resource corresponds to one periodic CSI-RS, there is no need to indicate a TCI status. After the allocation is completed, each SRS triggering state has a corresponding TCI state corresponding to the TCI state, and the TCI state of the CSI-RS corresponding to the SRS direction can be obtained according to the SRS triggering state.
From the allocation in fig. 2, the following can be learned:
1. and when the SRS request field in the DCI is 00, no non-periodic SRS is transmitted, and no CSI-RS is transmitted.
2. When the SRS request field in the DCI is 01, the aperiodic SRS resource set 0 is activated, and at the same time, the aperiodic CSI-RS (CRI #0) associated with the SRS resource set 0 is activated, and at the same time, the TCI state of the aperiodic CSI-RS is TCI state 0, i.e., TCI _ 0.
3. When the SRS request field in the DCI is 11, the aperiodic SRS resource set 0 is activated, and the aperiodic CSI-RS (CRI #0) associated with the SRS resource set 0 is activated, and the TCI state of the aperiodic CSI-RS is TCI state 1, and the stage TCI _1 is TCI state 1
4. When the SRS request field in the DCI is 11, the aperiodic SRS resource set 1 is activated, and the transmission of the periodic CSI-RS (CRI #1) associated therewith is activated, because the TCI state of the periodic CSI-RS is preconfigured at this time, the TCI state of the aperiodic SRS resource set 1 at this time is irrelevant to the DCI.
It should be noted that the QCL Type in TCI _0 or TCI _1 can be selected according to actual needs, that is, the TCI status is configured to be one of QCL-Type a, QCL-Type B, QCL-Type C, or QCL-Type D.
By configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission, the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
In some embodiments of the present invention, configuring the TCI state of the CSI-RS corresponding to the SRS comprises: and implicitly indicating that the transmission configuration index state is configured according to a preset mode through the SRS-spatialRelationInfo in the SRS resource configuration.
The above method will be described below by way of a specific example. It may be assumed that the SRS-spatialRelationInfo of all SRS resource in a certain aperiodic SRS resource set is configured as a certain periodic or semi-persistent CSI-RS (CRI #0), when the aperiodic SRS resource set and the aperiodic CSI-RS (CRI #1) corresponding to the resource set through SRS-AssocCSIRS are triggered to transmit, the aperiodic CSI-RS (CRI #1) and the periodic or semi-persistent CSI-RS (CRI #0) are also configured as parameters QCL with respect to average delay, delay spread, Doppler shift, Doppler spread and spatial reception parameters at the same time.
It should be noted that the "implicit indication" here may be an implicit indication known to those skilled in the art, where if a certain parameter X is used to indicate an action a itself, but now since another action B also needs to indicate, if action B is indicated by not reintroducing a new parameter, but action B is indicated by the parameter X indicating action a, X is called an implicit indication for action B.
In a specific implementation, a downlink signal corresponding to SRS-SpatialRelationInfo in SRS resource configuration includes: periodic CSI-RS, semi-persistent CSI-RS, or SS/PBCH block.
In a specific implementation, the TCI state configured for the CSI-RS corresponding to the SRS includes a parameter QCL of a downlink reference signal corresponding to the aperiodic CSI-RS corresponding to the SRS and the SRS-spatialrelalationinfo.
In a specific implementation, the downlink reference signals corresponding to the aperiodic CSI-RS and the SRS-spatialrelalationinfo corresponding to the SRS may relate to a parameter QCL of QCL-type a under a low frequency condition. Under the high frequency condition, the downlink reference signals corresponding to the aperiodic CSI-RS corresponding to the SRS and the SRS-SpatialRelationInfo may relate to parameters QCL of QCL-type a and QCL-type D.
Here, an example is explained. For example, the QCL Type is QCL-Type A in FR1(Frequency range 1, low Frequency), and QCL-Type A + QCL-Type D in FR2(Frequency range 2, high Frequency). It should be noted that FR1 and FR2 are both terms defined by 3GPP, and those skilled in the art can easily understand what is expressed by FR1 and FR2 after reading.
By configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission, the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
Configuring the TCI state of the CSI-RS corresponding to the SRS in some embodiments of the present invention includes: and indicating the SRS-spatialRelationInfo of the RRC signaling in the SRS resource configuration to configure the TCI state as the TCI state of the CIS-RS according to a preset mode.
In a specific implementation, configuring the TCI state in the predetermined manner through the SRS-spatialrelalationinfo in the SRS resource configuration through RRC signaling may be configuring the TCI state through the CSI-RS corresponding to the SRS-AssocCSIRS of the SRS resource set where the SRS resource is located.
In a specific implementation, configuring the TCI state in the SRS resource through the SRS-SpatialRelationInfo by RRC signaling further includes: and indicating the beam direction for sending the SRS resource to be the receiving beam direction of the RS corresponding to the QCL-TypeD type in the transmission configuration index state.
The above method will be described below by way of a specific example.
Assuming that a certain TCI state is TCI _0, the TCI _0 can be expressed as:
{CRI# 0，QCL-TypeA}，{SSB# 1，QCL-TypeD}。
if the SRS-spatialRelationInfo of all SRS resource in a certain aperiodic SRS resource set is configured as TCI _0, then when the aperiodic SRS resource set and the aperiodic CSI-RS (CRI #1) corresponding to the aperiodic SRS resource set are triggered to be transmitted through SRS-AssocCSIRS, the aperiodic CSI-RS (CRI #1) has the following characteristics:
1. the aperiodic CSI-RS (CRI #1) and the CSI-RS (CRI #0) in the TCI _0 state relate to a QCL-Type A parameter QCL.
2. The aperiodic CSI-RS (CRI #1) and the SS/PBCH block # 1 in the TCI _0 state relate to a QCL-Type D parameter QCL.
3. The transmit beam direction of all SRS resources in the aperiodic SRS resource set is the receive beam direction of SS/PBCH block # 1.
By configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission, the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
In some embodiments of the present invention, there is also provided a method for acquiring an SRS, including: receiving a CSI-RS, wherein the CSI-RS comprises QCL information; calculating SRS information according to the CSI-RS information; the SRS information is transmitted.
By configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission, the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
In some embodiments of the present invention, there is also provided a method for acquiring an SRS, including: if the SRS needs to be acquired, configuring the SRS in a TCI state of the CSI-RS corresponding to the SRS, and generating the CSI-RS corresponding to the SRS according to the TCI state; transmitting the CSI-RS to a user terminal; a user terminal receives a CSI-RS (channel State information-reference Signal), wherein the CSI-RS comprises QCL (quaternary clock rate) information; and acquiring SRS information according to the CSI-RS information, and sending the SRS information.
Fig. 3 may be referred to in a flowchart of the method, where fig. 3 is a flowchart of a method for acquiring an aperiodic SRS in an embodiment of the present invention:
s01: and the base station configures the TCI state of the CSI-RS corresponding to the SRS.
S02: and the base station generates CSI-RS corresponding to the SRS according to the TCI state.
S03: and the base station sends the CSI-RS to the user terminal.
S04: the user terminal receives the CSI-RS; the CSI-RS includes QCL information.
S05: and the user terminal acquires SRS information according to the CSI-RS.
S06: and the user terminal sends the SRS information.
S07: and the base station receives the SRS information.
By configuring the TCI state of the aperiodic CSI-RS associated with the aperiodic SRS used for uplink non-codebook transmission, the receiving behavior of the UE is normalized, the system loss is reduced, and the signal processing speed of the base station and the UE is increased.
It should be noted that, in the embodiments of the present invention, the SRS-AssocCSIRS and the SRS-SpatialRelationInfo are both parameter types defined in RRC, and the description and the function thereof will be easily understood by those skilled in the art after reading.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A method for acquiring aperiodic channel sounding reference signal, comprising:
if the aperiodic channel sounding reference signal needs to be acquired, configuring a transmission configuration index state of an aperiodic channel state information reference signal corresponding to the aperiodic channel sounding reference signal, wherein the configuration transmission configuration index state indicates quasi co-station information of the channel state information reference signal and a source reference signal;
generating an aperiodic channel state information reference signal corresponding to a channel sounding reference signal according to the transmission configuration index state;
transmitting the aperiodic channel state information reference signal;
and receiving the channel detection reference signal information returned according to the aperiodic channel state information reference signal.
2. The method of claim 1, wherein the configuring the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the channel sounding reference signal further comprises: configuring a transmission configuration index state in a channel sounding reference signal triggering state through RRC.
3. The method of claim 2, wherein the configuring, by RRC, a transmission configuration index state in a channel sounding reference signal triggering state comprises: and configuring a transmission configuration index state for an aperiodic channel state information reference signal corresponding to the SRS-AssocCSIRS of each channel sounding reference signal resource set in each channel sounding reference signal trigger state according to a predetermined mode.
4. The method of claim 1, wherein the configuring the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the channel sounding reference signal comprises: and implicitly indicating to configure the transmission configuration index state according to a preset mode through the SRS-spatialRelationInfo in the channel sounding reference signal resource configuration.
5. The method of claim 4, wherein the downlink signal corresponding to the SRS-spatialRelationInfo in the channel sounding reference signal resource configuration comprises: a periodic channel state information reference signal, a semi-persistent channel state information reference signal, or an SS/PBCH block.
6. The method of claim 4 or 5, wherein the configuring the transmission configuration index status of the aperiodic CSI-RS corresponding to the SRS comprises that the aperiodic CSI-RS corresponding to the SRS is quasi co-sited with the downlink reference signal corresponding to the SRS-spatialRelationInfo in the resource configuration.
7. The method of claim 1, wherein the configuring the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the channel sounding reference signal comprises: and configuring the transmission configuration index state according to a predetermined mode through SRS-spatialRelationInfo in the channel sounding reference signal resource configuration through RRC signaling.
8. The method of claim 7, wherein configuring the transmission configuration index state in a predetermined manner by SRS-SpatialRelationInfo in channel sounding reference signal resource configuration through RRC signaling comprises: indicating that the transmission configuration index state of the aperiodic CSI-RS corresponding to the SRS-AssocCSIRS of the channel sounding reference signal resource set in which the channel sounding reference signal resource is located is the transmission configuration index state.
9. The method of claim 7, wherein configuring the transmission configuration index state in a predetermined manner by SRS-SpatialRelationInfo in channel sounding reference signal resource configuration through RRC signaling further comprises: and indicating the beam direction for sending the SRS resource to be the receiving beam direction of the RS corresponding to the QCL-TypeD type in the transmission configuration index state.
10. A method for acquiring aperiodic channel sounding reference signal, comprising:
receiving an aperiodic channel state information reference signal, wherein the aperiodic channel state information reference signal comprises quasi co-station information of a channel state information reference signal and a source reference signal, and is generated according to a transmission configuration index state, and the transmission configuration index state corresponds to the aperiodic channel sounding reference signal;
calculating channel sounding reference signal information according to the aperiodic channel state information reference signal;
and sending the channel sounding reference signal information.
11. A method of acquiring an aperiodic channel sounding reference signal, comprising:
if the aperiodic channel sounding reference signal needs to be acquired, configuring the transmission configuration index state of the aperiodic channel state information reference signal corresponding to the channel sounding reference signal;
generating an aperiodic channel state information reference signal corresponding to a channel sounding reference signal according to the transmission configuration index state;
sending the aperiodic channel state information reference signal to a user terminal;
a user terminal receives a non-periodic channel state information reference signal, wherein the non-periodic channel state information reference signal comprises quasi co-station information;
acquiring channel detection reference signal information according to the aperiodic channel state information reference signal;
and sending the channel sounding reference signal information.
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| EP4050834B1 (en) * | 2018-04-04 | 2024-10-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information determination and configuration of non-periodic csi-rs resources with indication of usage for tracking |
| CN114868418B (en) * | 2019-11-11 | 2024-10-18 | 株式会社Ntt都科摩 | Terminal and wireless communication method |
| CN112994856A (en) * | 2019-12-12 | 2021-06-18 | 中国移动通信有限公司研究院 | Configuration method, terminal and network side equipment |
| WO2021151225A1 (en) * | 2020-01-29 | 2021-08-05 | Qualcomm Incorporated | Flexible channel state information reference signal and sounding reference signal association for uplink multiple-input multiple- output |
| EP4092925A4 (en) * | 2020-02-10 | 2023-01-11 | Huawei Technologies Co., Ltd. | Data transmission method and apparatus |
| CN113271159B (en) * | 2020-02-14 | 2022-07-19 | 展讯半导体(南京)有限公司 | Method, system, medium and electronic device for selecting reference signal of RLM |
| US20230163928A1 (en) * | 2020-06-22 | 2023-05-25 | Qualcomm Incorporated | Doppler shift compensation |
| WO2022029933A1 (en) * | 2020-08-05 | 2022-02-10 | 株式会社Ｎｔｔドコモ | Terminal, wireless communication method, and base station |
| WO2022048437A1 (en) * | 2020-09-01 | 2022-03-10 | Qualcomm Incorporated | User equipment (ue) initiated reference signal requests |
| WO2022052044A1 (en) * | 2020-09-11 | 2022-03-17 | Qualcomm Incorporated | Physical uplink shared channel (pusch) transmission in joint downlink and uplink transmission configuration indicator (tci) state scenarios |
| CN114793153B (en) * | 2021-01-26 | 2024-08-13 | 北京紫光展锐通信技术有限公司 | Aperiodic reference signal transmission method and related device |
| CN115622672A (en) * | 2021-07-16 | 2023-01-17 | 维沃移动通信有限公司 | SRS transmission method, device, terminal and network side equipment |
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