CN109587793B

CN109587793B - TCI state updating method, base station and terminal

Info

Publication number: CN109587793B
Application number: CN201710910025.9A
Authority: CN
Inventors: 杨宇; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2021-08-31
Anticipated expiration: 2037-09-29
Also published as: CN109587793A

Abstract

The invention provides a TCI state updating method, a base station and a terminal, wherein the method comprises the following steps: transmitting a Transmission Configuration Indication (TCI) state to the terminal; receiving a report message which is sent by the terminal and comprises target reference signal information, wherein the target reference signal information is selected by the terminal according to measurement of a TCI state, and the TCI state is associated with time information or counting information; and updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information. The TCI state updating method provided by the invention can improve the accuracy of the corresponding relation between the TCI states and the reference signals of the network side and the user side.

Description

TCI state updating method, base station and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a TCI status updating method, a base station, and a terminal.

Background

The network side configures a corresponding relationship between a TCI (Transmission Configuration Indication) state and an RS (Reference Signal) for a UE (User Equipment) through an RRC (Radio Resource Control) signaling, where the corresponding relationship between the TCI state and the RS may be in a form of a TCI table, and the description is given by taking the example that the corresponding relationship is in a form of a TCI table. The TCI table may include information such as TCI status, RS Set (Reference Signal Set), and the like. The TCI State is used for indicating a DMRS (Demodulation Reference Signal) of a PDSCH (Physical Downlink Shared Channel) or a DMRS of a PDCCH (Physical Downlink Shared Channel) by using a QCL (Quasi-Co-Location), that is, indicating a Downlink beam used by the PDCCH or the PDSCH. For example, the TCI table may be as shown in table 1:

TABLE 1

TCI State	RS Set
		0	Set 0
1	Set 1
		2	Set 2
……	……

Where the TCI State uses a corresponding number of bits depending on the total number of states in the table, e.g., the TCI State has M, it can be identified with the smallest integer greater than log2 (M). For example, M-8, then 3 bits may be used for identification. Each TCI State corresponds to one or more RS Set, and each RS Set comprises a plurality of RS resources (namely RS resources). Each RS Set has a QCL relationship with one DMRS port group (i.e., DMRS port group), for example, one TRP (Transmission and Reception Point) uses one DMRS port group, which has a QCL relationship with one RS Set. The downlink reference signal (i.e., DL RS) in the RS Set includes the following reference signal types (i.e., RS types):

1. a synchronization signal Block, SS Block;

2. a Periodic CSI-RS (Channel State Information Reference Signal), i.e., a Periodic CSI-RS;

3. aperiodic CSI-RS, i.e., Aperiodic CSI-RS;

4. semi-persistent CSI-RS, i.e., Semi-persistent CSI-RS.

Specifically, when TCI is used for QCL indication of PDCCH, 1 TCI State is notified through RRC signaling or RRC and MAC (Medium Access Control) CE (Control Element) to indicate one RS Set, and the RS Set has a QCL relationship with a DMRS port of PDCCH, so that UE can know which receiving Beam (i.e., Rx Beam) is used to receive PDCCH according to the TCI State.

When the TCI is used for QCL indication of the PDSCH, the TCI State is notified through a TCI Field (Field) of DCI (Downlink Control Information) to indicate an RS Set, and the RS Set has a QCL relationship with a DMRS port of the PDSCH to be scheduled, so that the UE can know which Rx Beam is used to receive the PDSCH according to the TCI State.

In the prior art, when a network side sends a trigger message and a TCI State through DCI to update an aperiodic TCI State, if a DCI message is lost or a reported content after a UE measures an aperiodic CSI-RS (Channel State Information Reference Signal) Resource (i.e., CSI-RS Resource) is lost, the TCI states maintained by the network side and the UE side are inconsistent, so that a subsequent network side performs beam indication through TCI to transmit a PDCCH or a PDSCH, a downlink transmission beam of the network side and a downlink reception beam of the UE cannot be aligned, and transmission interruption occurs.

For example, as shown in fig. 1, after DCI is sent for the first time, the UE measures an aperiodic CSI-RS resource, but the reporting result is lost, that is, the reporting of the measurement result fails, at this time, the network side does not update the TCI State, but the UE side updates a reference signal Index (that is, an RS Index) corresponding to the TCI State, so that the TCI states of the network side and the UE side are inconsistent. And if the DCI is sent for the second time, reporting the measurement result of the UE to the network side. However, the TCI State in the first DCI and the second DCI is different, the UE updates the reference signal Index (i.e., RS Index) corresponding to the TCI State in the second DCI, and the network side may update to correspond the TCI State in other DCIs (e.g., the TCI State in the first DCI) to the RS Index, so that the TCI states of the network side and the UE side are inconsistent. Therefore, when the network side sends the PDCCH to schedule PDSCH transmission, and the PDCCH carries the TCI State to perform beam indication, if the TCI states maintained at the network side and the UE are inconsistent, the downlink transmit beam used by the network side and the downlink receive beam used by the UE side may not be aligned, and PDSCH transmission interruption occurs.

In the prior art, no effective solution has been proposed yet for the problem that the alignment of the transmission beam and the reception beam is difficult due to the inconsistent correspondence between the TCI State and the RS on the network side and the UE side.

Disclosure of Invention

The embodiment of the invention provides a TCI state updating method, a base station and a terminal, which aim to solve the problem that a transmitting beam and a receiving beam are difficult to align due to inconsistent correspondence between TCI states and RS of a network side and a UE side.

In order to solve the technical problem, the invention is realized as follows: a TCI status update method, comprising: transmitting a Transmission Configuration Indication (TCI) state to the terminal; receiving a report message which is sent by the terminal and comprises target reference signal information, wherein the target reference signal information is selected by the terminal according to measurement of a TCI state, and the TCI state is associated with time information or counting information; and updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information.

In a first aspect, an embodiment of the present invention provides a TCI status updating method. The method comprises the following steps:

transmitting a Transmission Configuration Indication (TCI) state to the terminal;

receiving a report message which is sent by the terminal and comprises target reference signal information, wherein the target reference signal information is selected by the terminal according to measurement of a TCI state, and the TCI state is associated with time information or counting information;

and updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information.

In a second aspect, an embodiment of the present invention further provides a TCI status updating method. The method comprises the following steps:

receiving a TCI state sent by a base station;

measuring a reference signal indicated by reference signal information corresponding to the TCI state, and determining target reference signal information;

updating the reference signal information corresponding to the TCI state according to the target reference signal information;

and sending a report message including the target reference signal information to the base station, wherein the TCI state is associated with time information or counting information.

In a third aspect, an embodiment of the present invention further provides a base station. The base station includes:

the transmission module is used for transmitting a Transmission Configuration Indication (TCI) state to the terminal;

a receiving module, configured to receive a report message including target reference signal information sent by the terminal, where the target reference signal information is reference signal information selected by the terminal for measurement according to a TCI state, and the TCI state is associated with time information or count information;

and the first updating module is used for updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information.

In a fourth aspect, an embodiment of the present invention further provides a terminal. The terminal includes:

the receiving module is used for receiving the TCI state sent by the base station;

the measurement module is used for measuring a reference signal indicated by the reference signal information corresponding to the TCI state and determining target reference signal information;

the first updating module is used for updating the reference signal information corresponding to the TCI state according to the target reference signal information;

a sending module, configured to send a report message including the target reference signal information to the base station, where the TCI status is associated with time information or counting information.

In a fifth aspect, an embodiment of the present invention further provides a base station, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the TCI status updating method provided in the first aspect.

In a sixth aspect, an embodiment of the present invention further provides a terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the TCI status updating method provided in the second aspect.

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 being executed by a processor, the computer program implements the steps of the TCI status updating method provided in the first aspect.

In an eighth aspect, the 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 executed by a processor, the computer program implements the steps of the TCI status updating method provided in the second aspect.

In the embodiment of the invention, by associating the TCI state with the time information or the counting information, the reference signal information corresponding to the TCI state can be updated based on the time information or the counting information and the target reference signal information, so that the consistency of the corresponding relation between the TCI state and the reference signal of the network side and the user side can be ensured, and the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistency of the corresponding relation between the TCI state and the reference signal of the network side and the UE side during channel transmission can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic diagram of a TCI status update provided by the related art;

fig. 2 is a schematic diagram of a network structure to which the TCI status update method provided by the embodiment of the present invention is applicable;

FIG. 3 is a flowchart of a TCI status update method according to an embodiment of the present invention;

FIG. 4 is a flowchart of a TCI status update method according to another embodiment of the present invention;

FIG. 5 is a flowchart of a TCI status update method according to another embodiment of the invention;

fig. 6 is a structural diagram of a base station according to an embodiment of the present invention;

fig. 7 is a block diagram of a base station according to still another embodiment of the present invention;

fig. 8 is a structural diagram of a terminal provided in an embodiment of the present invention;

fig. 9 is a block diagram of a terminal provided in accordance with still another embodiment of the present invention;

fig. 10 is a block diagram of a base station according to still another embodiment of the present invention;

fig. 11 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented, for example, in a sequence other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B and/or C, means that 7 cases are included that include a alone, B alone, C alone, and both a and B, B and C, a and C, and A, B and C.

For convenience of description, some contents related to the embodiments of the present invention are explained below:

with respect to multiple antennas:

radio access technology standards such as LTE (Long Term Evolution ) and LTE-a (LTE-Advanced, Long Term Evolution-enhanced) are constructed based on MIMO (Multiple-Input Multiple-Output) and OFDM (Orthogonal Frequency Division Multiplexing) technologies. The MIMO technology utilizes spatial freedom available in a multi-antenna system to improve peak rate and system spectrum utilization.

The dimension of the MIMO technology is continuously expanding in the process of standardization development. In LTE Release8 (i.e., LTE eighth Release), MIMO transmission of 4 layers at most can be supported. MU-MIMO (Multi-User Multiple-Input Multiple-Output) technology and Transmission scheme (Transmission scheme), for example, MU-MIMO Transmission of TM-8(Transmission Mode) can support 4 downlink data layers at most in LTE Release9 (i.e., LTE ninth Release). The transmission capability of SU-MIMO (Single-User Multiple-Input Multiple-Output ) is extended to up to 8 data layers in LTE Release10 (i.e., LTE Release ten).

In future mobile communication systems, e.g., 5G mobile communication systems, a larger scale, more antenna port MIMO technology will be introduced. The large-scale MIMO (Massive MIMO) technology uses a large-scale antenna array, can greatly improve the utilization efficiency of a system frequency band, and supports a larger number of access users.

In the large-scale MIMO technology, if a full digital array is adopted, the maximized spatial resolution and the optimal MU-MIMO performance can be achieved, but such a structure needs a large number of AD/DA conversion devices and a large number of complete rf-baseband processing channels, which is a huge burden in terms of equipment cost and baseband processing complexity.

In order to reduce the implementation cost and the equipment complexity, a digital-analog hybrid beamforming technology is developed, that is, on the basis of the traditional digital domain beamforming, a primary beamforming is added to a radio frequency signal near the front end of an antenna system. Analog forming enables a sending signal to be roughly matched with a channel in a simpler mode. The dimension of the equivalent channel formed after analog shaping is smaller than the actual number of antennas, so that the AD/DA conversion devices, the number of digital channels and the corresponding baseband processing complexity required thereafter can be greatly reduced. The residual interference of the analog forming part can be processed once again in the digital domain, thereby ensuring the quality of MU-MIMO transmission. Compared with full digital forming, digital-analog hybrid beam forming is a compromise scheme of performance and complexity, and has a high practical prospect in a system with a high frequency band and a large bandwidth or a large number of antennas.

With respect to the high frequency band

For the next generation communication system after the fourth generation mobile communication technology standard (i.e. 4G), the working frequency band supported by the system is increased to above 6GHz, up to about 100 GHz. The high frequency band has richer idle frequency resources, and can provide higher throughput for data transmission. At present, 3GPP (3rd Generation Partnership Project) has completed high frequency channel modeling work, the wavelength of a high frequency signal is short, more antenna elements can be arranged on a panel with the same size compared with a low frequency band, and a beam with stronger directivity and narrower lobe is formed by using a beam forming technology.

With respect to Beam Measurement (i.e., Beam Measurement) and Beam Reporting (Beam Reporting)

The act of reporting is also referred to herein as reporting. The behavior reported hereinafter and the words reported are synonymous and are not intended to be limiting of the invention. Analog beamforming is full bandwidth transmit and each polar array element on the panel of each high frequency antenna array can only transmit analog beams in a time division multiplexed manner. The shaping weight of the analog beam is realized by adjusting parameters of equipment such as a radio frequency front end phase shifter and the like.

At present, a polling method is usually used to train analog beamforming vectors, that is, an array element in each polarization direction of each antenna panel sequentially sends training signals (i.e., candidate beamforming vectors) at an appointed time in a time division multiplexing method, and a terminal feeds back a beam report after measurement, so that a network side uses an analog beam corresponding to an optimal training signal measurement result to implement data transmission when transmitting a service next time.

The network side configures report Setting information (i.e., Reporting Setting) of a Beam report (i.e., Beam Reporting) for the UE through high-layer signaling, where the Setting information includes content information of the Beam report, time domain related messages (e.g., periodic, aperiodic, or semi-persistent) of the Beam report, Frequency domain Granularity (i.e., Frequency Granularity) information of the Beam report, and the like. The content information in the beam report may include: at least one of the optimal transmit beam identification information selected by the UE, physical layer measurement results (e.g., physical layer reference signal received power, i.e., L1-RSRP) of the beams selected by the UE, grouping information of the beams selected by the UE, and the like.

TCI table updating mode

The TCI table is only one representation of the corresponding relationship between the TCI status and the RS, and for convenience of description, the following description of the embodiment of the present invention will take the corresponding relationship between the TCI status and the RS as the TCI table. Specifically, the TCI table may be updated using an explicit or implicit method, wherein:

the TCI table may be updated using an explicit method as follows: the network side configures and notifies the UE to perform beam training, and reports the measured optimal reference signal Index(s) (namely RS Index) and the corresponding RSRP to the network through a beam report, wherein the reference signal Index(s) can be a synchronization signal Block Time Index (SS Block Time Index) or a channel state information reference signal Resource Index (CSI-RS Resource Index). After receiving the beam report, the network updates the TCI table, i.e., updates the TCI State (i.e., TCI State) and the corresponding reference signal Set (i.e., RS Set) information, and may notify the updated content to the UE through the downlink signaling.

The TCI table is updated with an implicit method as follows: the network side may send a Trigger message and a TCI state through the DCI, where the Trigger message (i.e., Trigger) is used to notify the UE to start measuring an aperiodic CSI-RS resource corresponding to the TCI state. The UE associates the optimal CSI-RS resource with the TCI state after measurement. If the CSI-RS resources are measured, the UE reports the optimal CSI-RS resource index to the network, and the network updates the RS index in the RS set corresponding to the TCI state in the TCI table. Because the network side can update the RS index corresponding to the TCI state according to the report of the UE, and the UE can also update the RS index corresponding to the TCI state according to the measurement result, the updated TCI table content does not need to be sent through an explicit signaling.

By an explicit or implicit update method, the TCI table maintained on the network side can be as shown in table 2:

TABLE 2

TCI State	RS Set	DL Tx Beam information
			0	Set 0	Tx Beam 0
1	Set 1	Tx Beam 1
			2	Set 2	Tx Beam 2
……	……	……

The TCI table maintained by the UE side may be as shown in table 3:

TABLE 3

TCI State	RS Set	DL Rx Beam information
			0	Set 0	Rx Beam 0
1	Set 1	Rx Beam 1
			2	Set 2	Rx Beam 2
……	……	……

Note that the DL Tx Beam information is used to indicate downlink transmission Beam information, and the DL Rx Beam information is used to indicate downlink reception Beam information.

The embodiment of the invention provides a TCI state updating method aiming at the problem that in the prior art, when a network realizes aperiodic TCI updating by sending a trigger message and a TCI state through DCI, when DCI information is lost or reported contents of UE after measuring aperiodic CSI-RS resources are lost, corresponding relations (such as TCI tables) between the TCI states of a network side and a UE side and RS are inconsistent, so that a transmitting beam and a receiving beam are difficult to align The probability of transmission interruption due to the fact that the received beams cannot be aligned.

Referring to fig. 2, fig. 2 is a schematic diagram of a network structure to which the TCI status update method according to the embodiment of the present invention is applicable, and as shown in fig. 2, the network structure includes a base station 10 and a terminal 20, where the terminal 20 may communicate with the base station 10 through the network, where the base station 10 may be an evolved Node B (eNB or eNodeB) or a base station in a 5G network (gNB), which is not limited herein. The terminal 20 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.

In the embodiment of the present invention, the base station 10 sends a Transmission Configuration Indication (TCI) state to the terminal 20, and specifically, the base station may send the TCI state through a Downlink Control Information (DCI), a Radio Resource Control (RRC) signaling or a Media Access Control (MAC) Control (CE) (Control unit). Optionally, the base station 10 may further send a trigger message to the terminal, where the trigger message is used to trigger the UE to measure the reference signal, for example, synchronization signal block information, aperiodic CSI-RS resource, and the like.

Optionally, the TCI state may be used for a DMRS (Demodulation Reference Signal) of a PDSCH (Physical Downlink Shared Channel) or a DMRS of a PDCCH (Physical Downlink Shared Channel) to indicate a QCL (Quasi-Co-Location), that is, to indicate a Downlink beam used by the PDCCH or the PDSCH. Specifically, one TCI state may be associated with one or more reference signals, where the reference signals may be synchronization signal blocks, aperiodic CSI-RS, and the like.

In this embodiment of the present invention, the TCI status is associated with time information or count information, for example, the TCI status may be associated with time information of DCI signaling, or the TCI status is associated with a preset time interval, or the TCI status is associated with a count information, where the count information may be a count of a counter in the DCI signaling, and the counter may be used to count the number of DCI signaling sent for updating the TCI status.

The terminal 20 receives the TCI status sent by the base station 10, and measures a reference signal corresponding to the TCI status, where the reference signal may be one or more reference signal resources, so as to obtain one or more optimal reference signals, that is, a target reference signal, and may obtain reference signal information corresponding to the one or more optimal reference signals, that is, target reference signal information, for example, a reference signal index and a received power corresponding to the one or more optimal reference signals.

Specifically, the terminal 20 may replace the original reference signal index corresponding to the TCI status carried in the DCI according to the optimal reference signal index, and the terminal may also update the receive beam information used for measuring the optimal reference signal.

The terminal 20 may further send the target reference signal information to the base station 10, so that the base station 10 may update the reference signal information corresponding to the TCI state based on the time information or the count information and the target reference signal information, and further, the base station 10 may also update the transmission Beam (i.e., Tx Beam) information used for transmitting the target reference signal.

The embodiment of the invention can update the reference signal information corresponding to the TCI state based on the time information or the counting information and the target reference signal information by associating the TCI state with the time information or the counting information, thereby ensuring the consistency of the corresponding relation between the TCI state and the reference signal of the network side and the user side, and reducing the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistent corresponding relation between the TCI state and the RS of the network side and the UE side during channel transmission.

The embodiment of the invention provides a TCI state updating method, which applies a base station. Referring to fig. 3, fig. 3 is a flowchart of a TCI status updating method according to an embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:

step 301, transmitting a transmission configuration indication TCI status to the terminal.

In the embodiment of the present invention, the base station may send the TCI status through DCI, RRC signaling, or MAC CE. Optionally, the base station may further send a trigger message to the terminal, where the trigger message is used to trigger the UE to measure a reference signal, for example, a synchronization signal block, an aperiodic CSI-RS resource, and the like.

Optionally, the TCI status may be used for QCL indication of the DMRS of the PDSCH or the DMRS of the PDCCH, that is, indicating a downlink beam used by the PDCCH or the PDSCH. Specifically, one TCI state may be associated with one or more reference signals, where the reference signals may be synchronization signal blocks, aperiodic CSI-RS, and the like. For example, referring to table 2, the TCI states (i.e., TCI states) may be 0, 1, 2, etc., each TCI State corresponds to one or more reference signal sets, i.e., RS sets, each reference signal Set may include one or more reference signals, e.g., one or more reference signal resources. Step 302, receiving a report message including target reference signal information sent by the terminal, where the target reference signal information is reference signal information selected by the terminal for measurement according to a TCI state, and the TCI state is associated with time information or count information.

In this embodiment of the present invention, after receiving a TCI status sent by a base station, a terminal may measure a reference signal corresponding to the TCI status, where the reference signal may be one or more channel status information reference signal resources or one or more synchronization signal blocks, so as to obtain one or more optimal reference signals, that is, a target reference signal, and may obtain reference signal information corresponding to the one or more optimal reference signals, that is, target reference signal information, for example, a reference signal index and reference signal received power (that is, RSRP) corresponding to the one or more optimal reference signals. It is to be understood that, when the reference signal is a synchronization signal Block, the reference signal Index may be a synchronization signal Block Time Index (SS Block Time Index), and when the reference signal is a CSI reference signal resource, the reference signal Index may be a CSI reference signal resource Index, for example, a CSI-RS resource Index. And after the terminal obtains the target reference signal information, the terminal sends the target reference signal information to the base station so that the base station can update the TCI state based on the target reference signal information.

It is understood that, in the embodiment of the present invention, the port of the reference signal resource corresponding to the TCI state may also be measured.

In the embodiment of the present invention, the TCI status is associated with time information or count information. Specifically, the TCI status may be associated with time information used for transmitting signaling of the TCI status, for example, the sending time of DCI signaling; or the TCI status is associated with a preset time interval, where the preset time interval may be a time from the time when the terminal receives the TCI status to the time when the terminal sends the report message, and is a preset time interval; or the TCI status is associated with count information, where the count information may be a count of a counter in the DCI signaling, and the counter may be used to count the number of DCI signaling transmitted for TCI status update.

And step 303, updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information.

In this embodiment of the present invention, the base station may update the reference signal information corresponding to the TCI state based on the time information or the count information and the target reference signal information.

For example, when the TCI status is associated with time information or count information, the base station may determine the TCI status according to the association between the time information or count information and the TCI status, that is, the TCI status sent by the base station to the terminal in step 301, so that the reference signal information corresponding to the TCI status may be updated by using the target reference signal information, for example, when the target reference signal information is a target reference signal index, the target reference signal index may be used to replace a previous reference signal index corresponding to the TCI status.

The TCI state updating method of the embodiment of the invention can update the reference signal information corresponding to the TCI state based on the time information or the counting information and the target reference signal information by associating the TCI state with the time information or the counting information, thereby ensuring the consistency of the corresponding relation between the TCI state and the reference signal of the network side and the user side, and reducing the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistent corresponding relation between the TCI state and the RS of the network side and the terminal side during channel transmission.

Optionally, in order to improve flexibility of the TCI state transmission, the TCI state may be sent through a downlink control information DCI, a radio resource control RRC signaling, or a medium access control MAC control unit.

In the embodiment of the present invention, the base station may transmit the TCI status by using, but not limited to, DCI, RRC signaling, or MAC CE. It is to be understood that, if the base station further transmits other information to the terminal, for example, a trigger message, time information, and counting information, the other information may also be transmitted through DCI, RRC signaling, or MAC CE together with the above-mentioned TCI state. The embodiment of the invention adopts DCI, RRC signaling or MAC CE to transmit the TCI state, thereby not only improving the accuracy of TCI state transmission, but also improving the flexibility of information transmission.

Optionally, the report message further includes the time information or the counting information.

In the embodiment of the present invention, the terminal may send the time information or the count information to the base station, so that the base station performs TCI status update according to the time information or the count information.

For example, the terminal may transmit time information (e.g., transmission time) for transmitting the signaling of the TCI state to the base station, so that the base station may determine the TCI state according to the time information for transmitting the signaling of the TCI state, and the terminal may also return count information of a counter for transmitting the signaling of the TCI state, which is received from the base station, to the base station, so that the base station may determine the TCI state based on the count information of the counter for transmitting the signaling of the TCI state, which is returned by the terminal.

Optionally, the time information or the count information is sent by using a new independent signaling bit, or

And scrambling the time information or the counting information to the information content of the report message for transmission.

In the embodiment of the present invention, the terminal may send the time information or the count information by using a newly added independent signaling bit, so that the base station can quickly obtain the time information or the count information from the report message. It is understood that the number of bits of the signaling bits can be set appropriately according to the time information length or the count information length.

Optionally, in order to save signaling overhead, in the embodiment of the present invention, time information or the count information may also be scrambled to the information content of the report message for transmission, for example, a sequence used for representing the time information or the count information may be scrambled to a sequence corresponding to the target reference signal information for transmission. It can be understood that, in the embodiment of the present invention, the time information or the count information may be scrambled to any information content in the report message, that is, the time information or the count information may be scrambled to all or any part of the content in the report message, so as to save signaling overhead. Correspondingly, after receiving the report message, the base station may perform descrambling on the report message to obtain the time information or the count information from the report message.

Optionally, the time information is a time slot number or a subframe number or a system frame number where the signaling for transmitting the TCI state is located.

In the embodiment of the invention, the time information is the time slot number or the subframe number or the system frame number of the signaling for sending the TCI state, so that the terminal can directly acquire the time information of the signaling for sending the TCI state by the base station without receiving the time information from the base station, and the signaling overhead can be saved.

It can be understood that the base station may send the time information for sending the signaling in the TCI state to the terminal, or may not send the time information for sending the signaling in the TCI state to the terminal, which is not limited in this embodiment of the present invention.

Optionally, the sending the transmission configuration indication TCI status to the terminal includes:

transmitting the TCI state and the counting information to a terminal; or

And sending a TCI state and reference signal information corresponding to the TCI state to a terminal, wherein the reference signal information is signal information obtained by scrambling by using the counting information.

In this embodiment of the present invention, the base station may further send count information to the terminal, where the count information may be a count of a counter in a signaling (e.g., DCI signaling, RRC signaling, etc.) used for sending the TCI state, and the counter may be used to count the number of the signaling used for updating the TCI state that is sent. For example, the base station may set a counter for recording the number of DCIs that trigger TCI status update, and the count of the counter is increased by 1 every time TCI status update is triggered.

Specifically, the base station may transmit the count information by using a newly added independent signaling bit, or scramble the count information into reference signal information (e.g., RS index) corresponding to the TCI state to transmit the count information to the terminal, so as to save signaling overhead.

In the embodiment of the present invention, the base station sends the counting information to the terminal, so that the terminal can determine whether there is a signaling transmission loss for sending the TCI state according to the counting information, for example, if the counting information currently received by the terminal is not continuous with the counting information received last time, it can be determined that there is a signaling transmission loss for sending the TCI state. The terminal can carry the counting information in the report message, so that the base station can find the TCI state and update the TCI state based on the counting information, the situation of updating other TCI states can not occur, and the consistency of the corresponding relation between the TCI states and the RS at the two sides of the base station and the terminal is ensured.

Optionally, the updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information includes:

and updating the reference signal information corresponding to the TCI state according to the target reference signal information and the preset time interval.

In this embodiment of the present invention, the preset time interval may refer to a time from the time when the terminal receives the TCI status to the time when the terminal sends the report message, which is a preset time interval, for example, a time from the time when the terminal receives the TCI status to the time when the terminal sends the report message is 5 time slots. Optionally, the preset time interval may be predefined by a protocol, or may be configured by the base station side, and is sent to the terminal, so that the terminal may control the sending time of the report message according to the preset time interval, for example, the terminal may record the receiving time of the signaling receiving the TCI state, and send the report message to the base station after the receiving time passes through the preset time interval, so that the base station may determine the signaling used for sending the TCI state based on the preset time interval, to further update the reference signal information corresponding to the TCI state, for example, the reference signal index and the reference signal receiving power corresponding to the reference signal index, and thus, the consistency of the correspondence between the TCI state and the RS of the network side and the user side may be ensured.

Optionally, the target reference signal information includes a target reference signal index, or the target reference signal information includes a target reference signal index and reference signal received power corresponding to the target reference signal index.

In this embodiment of the present invention, the target reference signal information may include a target reference signal index, for example, a synchronization signal block time index or a channel state information reference signal resource index, and the target reference signal information may also include a target reference signal index and a reference signal received power corresponding to the target reference signal index.

Optionally, after the reference signal information corresponding to the TCI state is updated according to the target reference signal information and the time information or the count information, the method further includes:

and updating downlink transmitting beam information corresponding to the target reference signal information.

In the embodiment of the present invention, after updating the reference signal information corresponding to the TCI state, the base station may further update the downlink transmission beam information corresponding to the target reference signal information. For example, after updating the CSI-RS resource index corresponding to the TCI state by using the optimal CSI-RS resource index reported by the terminal, the base station may update the transmission Beam (i.e., Tx Beam) used for transmitting the optimal CSI-RS resource.

The embodiment of the invention enables the signaling (such as DCI) triggering the updating of the TCI to accurately correspond to the report of the UE by setting the time information or the counting information at the base station and/or the terminal side, thereby enabling the corresponding relation (such as a TCI table) between the TCI state maintained at the network side and the RS maintained at the terminal side to be consistent, and reducing the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned because the corresponding relation between the TCI state and the RS is different during channel transmission.

The embodiment of the invention also provides a TCI state updating method, and the method is applied to a terminal. Referring to fig. 4, fig. 4 is a flowchart of a TCI status updating method according to another embodiment of the present invention, as shown in fig. 4, including the following steps:

step 401, receiving the TCI status sent by the base station.

The TCI status may be used for QCL indication of the DMRS of the PDSCH or the DMRS of the PDCCH, that is, indicating a downlink beam used by the PDCCH or the PDSCH. Specifically, one TCI state may be associated with one or more reference signals, where the reference signals may be synchronization signal blocks, aperiodic CSI-RS, and the like. For example, referring to table 2, the TCI states (i.e., TCI states) may be 0, 1, 2, etc., each TCI State corresponds to one or more reference signal sets, i.e., RS sets, each reference signal Set may include one or more reference signals, e.g., one or more reference signal resources.

Specifically, the terminal may receive the TCI state through DCI, RRC signaling, or MAC CE.

Step 402, measuring a reference signal indicated by the reference signal information corresponding to the TCI state, and determining target reference signal information.

In this embodiment of the present invention, after receiving a TCI status sent by a base station, a terminal may measure a reference signal corresponding to the TCI status, where the reference signal may be one or more channel status information reference signal resources or one or more synchronization signal blocks, so as to obtain one or more optimal reference signals, that is, a target reference signal, and may obtain reference signal information corresponding to the one or more optimal reference signals, that is, target reference signal information, for example, a reference signal index and reference signal received power (that is, RSRP) corresponding to the one or more optimal reference signals. It is to be understood that, when the reference signal is a synchronization signal Block, the reference signal Index may be a synchronization signal Block Time Index (SS Block Time Index), and when the reference signal is a CSI reference signal resource, the reference signal Index may be a CSI reference signal resource Index, for example, a CSI-RS resource Index.

Optionally, the terminal may further receive a trigger message sent by the base station, where the trigger message is used to trigger the terminal to measure a reference signal, for example, a synchronization signal block, an aperiodic CSI-RS resource, and the like.

And step 403, updating the reference signal information corresponding to the TCI state according to the target reference signal information.

In the embodiment of the invention, the terminal can update the reference signal information corresponding to the TCI state according to the target reference signal information. For example, after the terminal measures the aperiodic CSI-RS resource corresponding to the TCI state to obtain the optimal CSI-RS resource index, the optimal CSI-RS resource index may be used to replace the original CSI-RS resource index corresponding to the TCI state carried in the DCI.

Step 404, sending a report message including the target reference signal information to the base station, wherein the TCI status is associated with time information or counting information.

In this embodiment of the present invention, the TCI status is associated with time information or count information, for example, the TCI status may be associated with time information used for transmitting signaling of the TCI status, for example, the sending time of DCI signaling; or the TCI status is associated with a preset time interval, where the preset time interval may be a preset time interval from the time when the terminal receives the TCI status to the time when the terminal sends the report message; or the TCI status is associated with a count information, wherein the count information may be used to record the number of DCI signaling transmissions. Specifically, in order to ensure consistency between the TCI status and the RS at the terminal side and the network side, the terminal sends a report message including the target reference signal information to the base station, so that the base station can update the reference signal information corresponding to the TCI status according to the target reference signal information and the time information or the count information.

The TCI state updating method of the embodiment of the invention can ensure the consistency of the corresponding relation between the TCI states of the network side and the user side and the reference signal by associating the TCI state with the time information or the counting information, and can reduce the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistent corresponding relation between the TCI states of the network side and the UE side and the RS during channel transmission.

Optionally, in order to improve the flexibility of TCI state transmission, the TCI state is obtained by a downlink control information DCI, a radio resource control RRC signaling, or a media access control MAC control unit.

In the embodiment of the present invention, the terminal may obtain the TCI state through DCI, RRC signaling, or MAC CE, but not limited thereto. It is to be understood that, if the base station further transmits other information to the terminal, for example, a trigger message, time information, and counting information, the other information may also be transmitted through DCI, RRC signaling, or MAC CE together with the above-mentioned TCI state. The embodiment of the invention adopts DCI, RRC signaling or MAC CE to transmit the TCI state, thereby not only improving the accuracy of TCI state transmission, but also improving the flexibility of information transmission.

For example, the terminal may send time information (e.g., sending time) for sending the signaling of the TCI state to the base station, so that the base station may determine the TCI state according to the time information for sending the signaling of the TCI state, and the terminal may also return count information of a counter used for sending the signaling of the TCI state, which is received from the base station, to the base station, so that the base station may determine the TCI state based on the count information of the counter used for sending the signaling of the TCI state, which is returned by the terminal.

In the embodiment of the present invention, the terminal may send the time information or the count information by using a newly added independent signaling bit. It is understood that the number of bits of the signaling bits can be set appropriately according to the time information length or the count information length.

Optionally, the receiving the TCI status sent by the base station includes:

receiving the TCI state and the counting information sent by the base station; or

And receiving a TCI state sent by a base station and reference signal information corresponding to the TCI state, wherein the reference signal information is signal information obtained by scrambling by using the counting information.

In this embodiment of the present invention, the base station may further send count information to the terminal, where the count information may be a count of a counter used for recording a number of signaling (e.g., DCI signaling, RRC signaling, etc.) for sending the TCI status, and the counter may be used for counting a number of the signaling used for updating the TCI status that is sent. For example, the base station may set a counter for recording the number of DCIs that trigger TCI status update, and the count of the counter is increased by 1 every time TCI status update is triggered.

Specifically, the base station may transmit the count information by using a newly added independent signaling bit, or scramble the count information into reference signal information (e.g., RS index) corresponding to the TCI state and transmit the reference signal information to the terminal, so as to save signaling overhead.

In the embodiment of the present invention, the terminal receives the counting information sent by the base station, and may determine whether there is a signaling transmission loss for sending the TCI state according to the counting information, for example, if the counting information currently received by the terminal is not continuous with the counting information received last time, it may be determined that there is a signaling transmission loss for sending the TCI state. The terminal can carry the counting information in the report message, so that the base station can find the TCI state based on the counting information to update the TCI state without updating other TCI states, and consistency of corresponding relations between the TCI state and the RS at two sides of the base station and the terminal is ensured.

Optionally, the time information is a preset time interval.

In this embodiment of the present invention, the preset time interval may refer to a time from the time when the terminal receives the TCI status to the time when the terminal sends the report message, which is a preset time interval, for example, a time from the time when the terminal receives the TCI status to the time when the terminal sends the report message is 5 time slots.

Optionally, the preset time interval may be predefined by a protocol, or may be configured by the base station side, and is sent to the terminal, so that the terminal may control the sending time of the report message according to the preset time interval, for example, the terminal may record the receiving time of the signaling receiving the TCI state, and send the report message to the base station after the receiving time passes through the preset time interval, so that the base station may determine the signaling used for sending the TCI state based on the preset time interval, to further update the reference signal information corresponding to the TCI state, for example, the reference signal index and the reference signal receiving power corresponding to the reference signal index, and thus, the consistency of the correspondence between the TCI state and the RS of the network side and the user side may be ensured.

Optionally, the measuring the reference signal indicated by the reference signal information corresponding to the TCI state to determine target reference signal information includes:

if the TCI state corresponds to at least two reference signals, measuring the at least two reference signals by using a pre-recorded optimal downlink receiving beam to obtain one or more pieces of optimal reference signal information, and determining the one or more pieces of optimal reference signal information as the target reference signal information; or

And if the TCI state corresponds to one reference signal, measuring the reference signal by using at least two downlink receiving beams, and determining the optimal downlink receiving beam and target reference signal information.

For example, if the reference signal information is an RS resource index, the reference signal indicated by the reference signal information is the RS resource indicated by the RS resource index.

Specifically, the reference signal information corresponding to the TCI status may be one or more, and the corresponding TCI status corresponds to one or more reference signals. The embodiments of the present invention are described below by taking reference signals as RS resources:

when the TCI state corresponds to at least two RS resources, the terminal may measure downlink transmit beams (Tx beams) corresponding to the RS resources using the last measured optimal receive Beam (i.e., Rx Beam), thereby obtaining one or more currently optimal RS resources and determining the optimal RS resource index(s) as the target reference signal information.

When the TCI state corresponds to one RS resource, the terminal may measure the RS resource using multiple receive beams (i.e., Rx beams), so as to obtain an optimal receive Beam corresponding to the RS resource, and may determine the RS resource index as target reference signal information, or may determine the RS resource index and RSRP corresponding to the RS resource index as target reference signal information.

Optionally, after updating the reference signal information corresponding to the TCI state according to the target reference signal information, the method further includes:

and updating downlink receiving beam information corresponding to the target reference signal information.

In the embodiment of the present invention, after the terminal updates the reference signal information corresponding to the TCI state according to the target reference signal information, the terminal may further update the downlink receive beam information corresponding to the target reference signal information. For example, after the terminal measures the aperiodic CSI-RS resource and obtains the optimal CSI-RS resource index, the optimal CSI-RS resource index may be used to replace the original CSI-RS resource index corresponding to the TCI state carried in the DCI, and the terminal may further update the receive beam used for measuring the optimal CSI-RS resource.

The following describes an embodiment of the present invention with reference to specific examples, where the correspondence between the TCI status and the RS in the following examples is in the form of a TCI table:

example one:

and adding time information when the UE (namely the terminal) reports the measurement result, wherein the time information is used for representing which DCI the reported content corresponds to. The Time information may be reported by using a newly added independent Time Index (i.e., Time Index) signaling bit, or may be reported jointly with an RS Resource Index (i.e., RS Resource Index), for example, the Time information is used to scramble the RS Resource Index or other reported content information. And the network side (for example, the base station) updates the TCI state in the corresponding DCI according to the time information in the report message, so that the TCI state in the DCI is consistent with the TCI state update of the UE side. Specifically, referring to fig. 5, the TCI status updating method provided in the embodiment of the present invention includes the following steps:

step 501, the network side sends DCI to the UE, where the DCI includes a trigger message and a TCI status.

The Trigger message (i.e., Trigger message) is used to Trigger the UE to measure an aperiodic reference signal Resource, such as an aperiodic CSI-RS Resource (i.e., CSI-RS Resource).

The TCI State (i.e., TCI State) is a value in the TCI State column in the TCI table, for example, 0, 1, 2, etc., and corresponds to an aperiodic CSI-RS resource in the RS Set (i.e., RS Set).

Step 502, the UE receives the DCI signaling, acquires the trigger message and the TCI status, and starts to measure the RS resources in the RS set corresponding to the TCI status in the TCI table.

Specifically, when there are multiple RS resources, the UE needs to measure the downlink transmit beams (Tx beams) corresponding to the RS resources by using the optimal receive beams (i.e., Rx beams) measured last time, so as to obtain the current optimal RS resources.

When the number of RS resources is 1, the UE measures the RS resources using a plurality of reception beams (i.e., Rx Beam), thereby learning an optimal reception Beam corresponding to the RS resources.

Step 503, after the UE measures the aperiodic CSI-RS resource to obtain the optimal CSI-RS resource index, the optimal CSI-RS resource index is used to replace the original CSI-RS resource index corresponding to the TCI state carried in the DCI, and the UE may also update the receive beam used for measuring the optimal CSI-RS resource, thereby completing the updating of the TCI table on the UE side.

The CSI-RS Resource Index is a CSI-RS Resource Index, and the receiving Beam is Rx Beam.

Step 504, the UE reports the optimal CSI-RS resource index to the network side, and reports the time information of the DCI signaling.

The reporting content (that is, the reporting message) may be reporting the optimal CSI-RS resource index and the time information of the DCI signaling by using a newly added independent signaling bit, and optionally, the time information of the DCI signaling may be a time slot number or a subframe number or a system frame number in which the DCI signaling is located.

Optionally, the reported content may also be a content obtained by scrambling the optimal CSI-RS resource index using time information of the DCI signaling (or a preset sequence corresponding to the time information).

Step 505, the network side receives the UE report content, decodes the report content, obtains the optimal CSI-RS resource index and the time information of the DCI signaling, and updates the TCI state in the DCI corresponding to the time information, that is, replaces the original CSI-RS resource index corresponding to the TCI state with the optimal CSI-RS resource index, and the network side may also update the transmission Beam (i.e., Tx Beam) used for transmitting the optimal CSI-RS resource, thereby completing the updating of the network side TCI table.

The TCI state is associated with the time information of the DCI signaling, so that the corresponding DCI signaling can be determined through the time information of the DCI signaling, the TCI state in the DCI corresponding to the time information can be further updated, and the consistency of TCI tables at a network side and a user side can be ensured.

Example two (not shown):

in the embodiment of the present invention, a Counter (i.e., Counter) may be set on the network side, and the count of the Counter is increased by 1 every time TCI status update is triggered. The counter may be disposed in the DCI for triggering the update of the TCI state, or the current count (or the preset sequence corresponding to the current count) (i.e., the above-mentioned count information) of the counter may be scrambled onto the signal sequence of the CSI-RS corresponding to the TCI state in the DCI. After receiving the DCI, the UE may obtain the current count of the counter, and when the current count of the counter is found to be discontinuous with the previous time, it may be determined that the DCI transmission is lost.

Specifically, when reporting the measurement result, the UE reports the current count of the counter carried in the DCI in which the TCI state corresponding to the measured CSI-RS Resource (i.e., CSI-RS Resource) is located to the network side. The network side can acquire the TCI state in the DCI corresponding to the optimal CSI-RS resource index reported by the UE according to the reported content of the UE, thereby completing the updating of the TCI table.

The TCI state is associated with the counting information in the DCI signaling, so that the corresponding DCI signaling can be determined through the counting information in the DCI signaling, and the TCI state in the DCI corresponding to the counting information can be further updated, so that the consistency of TCI tables at a network side and a user side can be ensured.

Example three (not shown):

the embodiment of the invention updates the TCI state according to the timing relationship by setting the timing relationship between the DCI carrying the Trigger message (Trigger) and the TCI state and the UE report. Specifically, the timing relationship may be a preset time interval between a time when the UE receives the DCI and a time when the UE reports the measurement result. Alternatively, the timing relationship may be predefined by a protocol or configured by the network side.

Specifically, if the DCI transmitted for the first time is lost or the UE receives the first DCI but the reporting result is lost, after the measurement result of the RS resource in the DCI transmitted for the second time is reported to the network side, the network side can obtain the TCI state in the DCI corresponding to the optimal CSI-RS resource index in the reporting content of the UE according to the timing relationship, thereby completing the updating of the TCI table.

The embodiment of the invention associates the TCI state with a timing relationship (namely a preset time interval), thereby determining the TCI state in the DCI corresponding to the optimal CSI-RS resource index in the content reported by the UE through the timing relationship, further updating the determined TCI state, and further ensuring the consistency of TCI tables at a network side and a user side.

Referring to fig. 6, fig. 6 is a structural diagram of a base station according to an embodiment of the present invention. As shown in fig. 6, the base station 600 includes: a sending module 601, a receiving module 602, and a first updating module 603, wherein:

a sending module 601, configured to send a transmission configuration indication TCI status to a terminal;

a receiving module 602, configured to receive a report message that includes target reference signal information and is sent by the terminal, where the target reference signal information is reference signal information that is selected by the terminal for measurement according to a TCI state, and the TCI state is associated with time information or count information;

a first updating module 603, configured to update the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information.

Optionally, the TCI status is sent by a downlink control information DCI, a radio resource control RRC signaling, or a media access control MAC control unit.

Optionally, the time information or the counting information is received by the base station by using a new independent signaling bit, or

And scrambling the time information or the counting information to the information content of the report message and receiving the information content by the base station.

Optionally, the sending module 601 is specifically configured to:

transmitting the TCI state and the counting information to a terminal; or

Optionally, the time information is a preset time interval, and the first updating module 603 is specifically configured to:

Optionally, referring to fig. 7, the base station 600 further includes:

a second updating module 604, configured to update downlink transmit beam information corresponding to the target reference signal information after updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information.

The base station 600 provided in the embodiment of the present invention can implement each process implemented by the base station in the method embodiments of fig. 3 and fig. 5, and is not described herein again to avoid repetition.

In the base station 600 of the embodiment of the present invention, the sending module 601 is configured to send a transmission configuration indication TCI status to the terminal; a receiving module 602, configured to receive a report message that includes target reference signal information and is sent by the terminal, where the target reference signal information is reference signal information that is selected by the terminal for measurement according to a TCI state, and the TCI state is associated with time information or count information; a first updating module 603, configured to update the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information. By associating the TCI state with the time information or the count information, the reference signal information corresponding to the TCI state can be updated based on the time information or the count information and the target reference signal information, so that consistency of correspondence between the TCI state and the reference signal at the network side and the user side can be ensured, and probability of transmission interruption due to misalignment between the transmission beam and the reception beam caused by inconsistency between the TCI state and the RS at the network side and the UE side during channel transmission can be reduced.

Referring to fig. 8, fig. 8 is a structural diagram of a terminal according to an embodiment of the present invention. As shown in fig. 8, the terminal 800 includes: a receiving module 801, a measuring module 802, a first updating module 803, and a sending module 804, wherein:

a receiving module 801, configured to receive a TCI status sent by a base station;

a measurement module 802, configured to measure a reference signal indicated by the reference signal information corresponding to the TCI state, and determine target reference signal information;

a first updating module 803, configured to update, according to the target reference signal information, reference signal information corresponding to the TCI state;

a sending module 804, configured to send a report message including the target reference signal information to the base station, where the TCI status is associated with time information or counting information.

Optionally, the TCI status is obtained through downlink control information DCI, radio resource control RRC signaling, or a media access control MAC control unit.

Optionally, the receiving module 801 is specifically configured to:

Optionally, the time information is a preset time interval.

Optionally, the measurement module 802 is specifically configured to:

Optionally, referring to fig. 9, the terminal 800 further includes:

a second updating module 805, configured to update, after the reference signal information corresponding to the TCI state is updated according to the target reference signal information, downlink receive beam information corresponding to the target reference signal information.

The terminal 800 provided in the embodiment of the present invention can implement each process implemented by the terminal in the method embodiments of fig. 4 and fig. 5, and is not described herein again to avoid repetition.

The terminal 800 of the embodiment of the present invention, the receiving module 801, is configured to receive a TCI status sent by a base station; a measurement module 802, configured to measure a reference signal indicated by the reference signal information corresponding to the TCI state, and determine target reference signal information; a first updating module 803, configured to update, according to the target reference signal information, reference signal information corresponding to the TCI state; a sending module 804, configured to send a report message including the target reference signal information to the base station, where the TCI status is associated with time information or counting information. By associating the TCI state with the time information or the counting information, the consistency of the corresponding relation between the TCI states of the network side and the user side and the reference signal can be ensured, and the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the fact that the corresponding relation between the TCI states of the network side and the UE side and the RS is inconsistent during channel transmission can be reduced.

Referring to fig. 10, fig. 10 is a structural diagram of a base station according to another embodiment of the present invention, and as shown in fig. 10, the base station 1000 includes: a processor 1001, a memory 1002, a bus interface 1003 and a transceiver 1004, wherein the processor 1001, the memory 1002 and the transceiver 1004 are connected to the bus interface 1003.

In this embodiment of the present invention, the base station 1000 further includes: a computer program stored on the memory 1002 and executable on the processor 1001, the computer program when executed by the processor 1001 implementing the steps of:

Optionally, the processor 1001 is further configured to:

transmitting the TCI state and the counting information to a terminal; or

Optionally, the time information is a preset time interval, and the processor 1001 is further configured to:

The base station of the embodiment of the invention sends the transmission configuration indication TCI state to the terminal; receiving a report message which is sent by the terminal and comprises target reference signal information, wherein the target reference signal information is selected by the terminal according to measurement of a TCI state, and the TCI state is associated with time information or counting information; and updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information, so that the consistency of the corresponding relations between the TCI states and the reference signals of the network side and the user side can be ensured, and the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistency of the corresponding relations between the TCI states and the reference signals of the network side and the UE side during channel transmission can be reduced.

Fig. 11 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention. Referring to fig. 11, the terminal 1100 includes, but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, processor 1110, and power supply 1111. Those skilled in the art will appreciate that the terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and that the terminal may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 1101 is configured to receive a TCI status sent by a base station;

a processor 1110, configured to measure a reference signal indicated by the reference signal information corresponding to the TCI state, and determine target reference signal information;

the processor 1110 is further configured to update the reference signal information corresponding to the TCI state according to the target reference signal information;

the radio frequency unit 1101 is further configured to send a report message including the target reference signal information to the base station, where the TCI status is associated with time information or counting information.

Optionally, the radio frequency unit 1101 is further configured to:

Optionally, the time information is a preset time interval.

Optionally, the radio frequency unit 1101 is further configured to

Optionally, the radio frequency unit 1101 is further configured to:

and after updating the reference signal information corresponding to the TCI state according to the target reference signal information, updating downlink receiving beam information corresponding to the target reference signal information.

The terminal of the embodiment of the invention can ensure the consistency of the corresponding relation between the TCI states of the network side and the user side and the reference signal by correlating the TCI states with the time information or the counting information, and can reduce the probability of transmission interruption caused by the fact that the transmitting beam and the receiving beam cannot be aligned due to the inconsistency of the corresponding relation between the TCI states of the network side and the UE side and the reference signal during channel transmission.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1101 may be configured to receive and transmit signals during a message transmission or a call, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1110; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 1101 may also communicate with a network and other devices through a wireless communication system.

The terminal provides the user with wireless broadband internet access via the network module 1102, such as helping the user send and receive e-mails, browse web pages, and access streaming media.

The audio output unit 1103 may convert audio data received by the radio frequency unit 1101 or the network module 1102 or stored in the memory 1109 into an audio signal and output as sound. Also, the audio output unit 1103 may also provide audio output related to a specific function performed by the terminal 1100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1104 is used to receive audio or video signals. The input Unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042, and the Graphics processor 11041 processes image data of still pictures or video obtained by an image capturing device, such as a camera, in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1106. The image frames processed by the graphic processor 11041 may be stored in the memory 1109 (or other storage medium) or transmitted via the radio frequency unit 1101 or the network module 1102. The microphone 11042 may receive sound and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1101 in case of the phone call mode.

Terminal 1100 can also include at least one sensor 1105, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 11061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 11061 and/or a backlight when the terminal 1100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., and will not be described in detail herein.

The display unit 1106 is used to display information input by a user or information provided to the user. The Display unit 1106 may include a Display panel 11061, and the Display panel 11061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 11071 (e.g., operations by a user on or near the touch panel 11071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 11071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 1110, and receives and executes commands sent from the processor 1110. In addition, the touch panel 11071 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 1107 may include other input devices 11072 in addition to the touch panel 11071. In particular, the other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 11071 can be overlaid on the display panel 11061, and when the touch panel 11071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1110 to determine the type of the touch event, and then the processor 1110 provides a corresponding visual output on the display panel 11061 according to the type of the touch event. Although the touch panel 11071 and the display panel 11061 are shown in fig. 11 as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 11071 and the display panel 11061 may be integrated to implement the input and output functions of the terminal, and the implementation is not limited herein.

The interface unit 1108 is an interface for connecting an external device to the terminal 1100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within terminal 1100 or may be used to transmit data between terminal 1100 and external devices.

The memory 1109 may be used to store software programs as well as various data. The memory 1109 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 1109 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1110 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 1109 and calling data stored in the memory 1109, thereby integrally monitoring the terminal. Processor 1110 may include one or more processing units; preferably, the processor 1110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1110.

The terminal 1100 can also include a power supply 1111 (e.g., a battery) for providing power to various components, and preferably, the power supply 1111 can be logically connected to the processor 1110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the terminal 1100 includes some functional modules that are not shown, and thus, are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 1110, a memory 1109, and a computer program stored in the memory 1109 and capable of running on the processor 1110, where the computer program, when executed by the processor 1110, implements each process of the above-mentioned TCI state updating method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

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 computer program implements each process of the above-mentioned embodiment of the TCI state updating method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A TCI state updating method is applied to a base station and is characterized by comprising the following steps:

receiving a report message which is sent by the terminal and comprises target reference signal information, wherein the target reference signal information is selected by the terminal according to measurement of a TCI state, and the TCI state is associated with time information or counting information; and

updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information;

the report message further includes the time information or the counting information.

2. The method of claim 1, wherein the TCI status is sent via downlink control information, DCI, radio resource control, RRC, signaling, or medium access control, MAC, control element.

3. The method of claim 1, wherein the time information or the count information is transmitted using a new independent signaling bit, or

4. The method of claim 1, wherein the time information is a slot number or a subframe number or a system frame number in which the signaling of the TCI status is sent.

5. The method of claim 1, wherein sending a Transmission Configuration Indication (TCI) status to the terminal comprises:

transmitting the TCI state and the counting information to a terminal; or

6. The method of claim 1, wherein the time information is a predetermined time interval, and the updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information comprises:

7. The method of claim 1, wherein the target reference signal information comprises a target reference signal index, or wherein the target reference signal information comprises a target reference signal index and a reference signal received power corresponding to the target reference signal index.

8. The method according to claim 1, wherein after updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information, the method further comprises:

9. A TCI state updating method is applied to a terminal and is characterized by comprising the following steps:

receiving a TCI state sent by a base station;

updating the reference signal information corresponding to the TCI state according to the target reference signal information; and

sending a report message including the target reference signal information to the base station, wherein the TCI state is associated with time information or counting information;

10. The method of claim 9, wherein the TCI status is obtained by a downlink control information DCI, radio resource control RRC signaling, or a medium access control MAC control element.

11. The method of claim 9, wherein the time information or the count information is transmitted using a new independent signaling bit, or

12. The method of claim 9, wherein the time information is a slot number or a subframe number or a system frame number in which the signaling of the TCI status is sent.

13. The method of claim 9, wherein receiving the TCI status sent by the base station comprises:

14. The method of claim 9, wherein the time information is a predetermined time interval.

15. The method of claim 9, wherein the measuring the reference signal indicated by the reference signal information corresponding to the TCI state to determine the target reference signal information comprises:

16. The method of claim 9, wherein the target reference signal information comprises a target reference signal index, or wherein the target reference signal information comprises a target reference signal index and a reference signal received power corresponding to the target reference signal index.

17. The method of claim 9, wherein after updating the reference signal information corresponding to the TCI state according to the target reference signal information, the method further comprises:

18. A base station, comprising:

a receiving module, configured to receive a report message including target reference signal information sent by the terminal, where the target reference signal information is reference signal information selected by the terminal for measurement according to a TCI state, and the TCI state is associated with time information or count information; and

the first updating module is used for updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the counting information;

19. The base station of claim 18, wherein the TCI status is sent by downlink control information DCI, radio resource control RRC signaling, or medium access control MAC control element.

20. The base station of claim 18, wherein the time information or the count information is received by the base station using a new independent signaling bit, or

21. The base station of claim 18, wherein the time information is a slot number or a subframe number or a system frame number at which the signaling of the TCI status is sent.

22. The base station of claim 18, wherein the sending module is specifically configured to:

transmitting the TCI state and the counting information to a terminal; or

23. The base station of claim 18, wherein the time information is a predetermined time interval, and the first updating module is specifically configured to:

24. The base station of claim 18, wherein the target reference signal information comprises a target reference signal index, or wherein the target reference signal information comprises a target reference signal index and a reference signal received power corresponding to the target reference signal index.

25. The base station of claim 18, wherein the base station further comprises:

and a second updating module, configured to update downlink transmit beam information corresponding to the target reference signal information after updating the reference signal information corresponding to the TCI state according to the target reference signal information and the time information or the count information.

26. A terminal, comprising:

the first updating module is used for updating the reference signal information corresponding to the TCI state according to the target reference signal information; and

a sending module, configured to send a report message including the target reference signal information to the base station, where the TCI status is associated with time information or counting information;

27. The terminal of claim 26, wherein the TCI status is obtained by a downlink control information DCI, radio resource control RRC signaling, or a medium access control MAC control element.

28. The terminal of claim 26, wherein the time information or the count information is sent using a new independent signaling bit, or

29. The terminal of claim 26, wherein the time information is a slot number or a subframe number or a system frame number at which the signaling of the TCI status is sent.

30. The terminal of claim 26, wherein the receiving module is specifically configured to:

31. The terminal of claim 26, wherein the time information is a predetermined time interval.

32. The terminal of claim 26, wherein the measurement module is specifically configured to:

33. The terminal of claim 26, wherein the target reference signal information comprises a target reference signal index, or wherein the target reference signal information comprises a target reference signal index and a reference signal received power corresponding to the target reference signal index.

34. The terminal of claim 26, wherein the terminal further comprises:

and a second updating module, configured to update downlink receive beam information corresponding to the target reference signal information after updating the reference signal information corresponding to the TCI state according to the target reference signal information.

35. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of the TCI state update method of any one of claims 1 to 8.

36. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of the TCI state update method according to any one of claims 9 to 17.

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 TCI state update method according to any one of claims 1 to 8.

38. 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 TCI state update method according to any one of claims 9 to 17.