Downlink reception method and device with multiple TCI states

Abstract

Provided are apparatus and methods for simultaneous DL transmission. In one novel aspect, a method for performing simultaneous DL transmission with multiple TCI states is provided. A base station (BS) may configure multiple TCI states for a user equipment (UE). After configuring the TCI states, the UE may determine the multiple TCI states for simultaneous DL transmission and send a report to the BS to notify the BS of the multiple TCI states for simultaneous DL transmission. The UE may then use the multiple TCI states for simultaneous DL transmission.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application No. 63 / 061,826, filed on August 6, 2020, entitled “Downlink Reception for Multi-Beam Operation,” the subject matter of which is incorporated herein by reference. Technical Field

[0003] The disclosed embodiments relate generally to wireless communications, and more particularly to downlink reception with multiple TCI states. Background Art

[0004] In legacy networks of the 3rd Generation Partnership Project (3GPP) 5G New Radio (NR), user equipment (UE) can be configured with multiple transmission configuration indication (TCI) states for downlink (DL) transmissions by the base station (BS). A TCI state is configured with quasi co-location information (QCL-Info), and each QCL-Info includes a reference signal (RS) and an associated QCL type.

[0005] For networks with multiple transmission and reception points (TRPs), when DL signals and channels are transmitted simultaneously from different TRPs, the UE needs to support simultaneous DL transmission with different TRPs. However, the details have not been discussed yet. Summary of the Invention

[0006] Provided are apparatuses and methods for downlink (DL) reception. In one novel aspect, a method for performing DL reception with multiple TCI states is provided. Specifically, a base station (BS) may configure a UE with multiple TCI states and multiple RS resources. Each TCI state is associated with at least one RS resource. After configuring the TCI states and RS resources, the UE may determine the multiple TCI states for DL reception and send a report to the BS to notify the BS of the multiple TCI states for DL reception. The UE then simultaneously applies the multiple TCI states for DL reception.

[0007] In one embodiment, a UE receives higher layer signaling from a network. The higher layer signaling indicates to the UE a plurality of TCI states and a plurality of RS resources. Each TCI state is associated with at least one RS resource. The UE determines that the UE can simultaneously receive a first RS resource and a second RS resource from the RS resources. The UE sends a report to the network to notify the network that the UE can simultaneously receive the first RS resource and the second RS resource. The UE simultaneously applies a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource for downlink reception.

[0008] In another embodiment, the base station transmits higher layer signaling to the UE. The higher layer signaling indicates to the UE a plurality of TCI states and a plurality of RS resources. Each TCI state is associated with at least one RS resource. The base station receives a report from the UE. The report notifies the base station that the UE can simultaneously receive a first RS resource and a second RS resource among the RS resources.

[0009] Other embodiments and advantages are described in the detailed description that follows. This summary is not intended to define the invention. The invention is defined by the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, wherein like numerals represent like components, illustrate embodiments of the present invention.

[0011] Figure 1 An exemplary 5G New Radio network supporting activation of power control settings for uplink transmissions according to an embodiment of the present invention is illustrated.

[0012] Figure 2 is a simplified block diagram of a gNB and a UE according to an embodiment of the present invention.

[0013] Figure 3A One embodiment of message transmission according to an embodiment of the present invention is illustrated.

[0014] Figure 3B One embodiment of higher layer signaling according to an embodiment of the present invention is illustrated.

[0015] Figure 4A One embodiment of message transmission according to an embodiment of the present invention is illustrated.

[0016] Figure 4B One embodiment of higher layer signaling according to an embodiment of the present invention is illustrated.

[0017] Figure 5 is a flowchart of a method for performing simultaneous DL transmission with multiple TCI states according to an embodiment of the present invention.

[0018] Figures 6A to 6His a flowchart of a method for performing simultaneous DL transmission with multiple TCI states according to an embodiment of the present invention.

[0019] Figure 7 is a flowchart of a method for performing simultaneous DL transmission with multiple TCI states according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] Reference will now be made in detail to some embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

[0021] Figure 1 An exemplary 5G NR network 100 supporting activation of power control settings for uplink (UL) transmissions according to aspects of the present invention is illustrated. The 5G NR network 100 includes a UE 110 communicatively connected to a gNB 121 operating in a licensed frequency band (e.g., 30 GHz to 300 GHz for mmWave) of an access network 120 that provides radio access using a radio access technology (RAT) (e.g., 5G NR technology). The access network 120 is connected to the 5G core network 130 via an NG interface, more specifically, to a user plane function (UPF) via an NG user-plane part (NG-u) and to an access and mobility management function (AMF) via an NG control-plane part (NG-c). A gNB can be connected to multiple UPFs / AMFs for load sharing and redundancy. UE 110 may be a smartphone, a wearable device, an Internet of Things (IoT) device, a tablet computer, etc. Alternatively, UE 110 may be a notebook (NB) or a personal computer (PC) with a data card inserted or installed therein. The data card includes a modem and one or more RF transceivers to provide wireless communication capabilities.

[0022] The gNB 121 may provide communication coverage for a geographic coverage area in which communication with the UE 110 is supported via a communication link 101. The communication link 101 shown in the 5G NR network 100 may include an UL transmission from the UE 110 to the gNB 121 (e.g., on a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH)) or a DL transmission from the gNB 121 to the UE 110 (e.g., on a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH)).

[0023] Figure 2 Figure 1 is a simplified block diagram of gNB 121 and UE 110 according to an embodiment of the present invention. For gNB 121, antenna 197 transmits and receives radio signals. A radio frequency (RF) transceiver module 196, coupled to the antenna, receives RF signals from the antenna, converts them to baseband signals, and transmits the baseband signals to processor 193. RF transceiver 196 also converts baseband signals received from processor 193, converts them to RF signals, and transmits them to antenna 197. Processor 193 processes the received baseband signals and invokes various functional modules and circuits to execute features within gNB 121. Memory 192, which includes both volatile and non-volatile computer-readable storage media, stores program instructions and data 190 to control the operation of gNB 121.

[0024] Similarly, for UE 110, antenna 177 transmits and receives RF signals. RF transceiver module 176, coupled to the antenna, receives RF signals from the antenna, converts them to baseband signals, and transmits the baseband signals to processor 173. RF transceiver 176 also converts baseband signals received from processor 173, converts them to RF signals, and transmits them to antenna 177. Processor 173 processes the received baseband signals and invokes various functional modules and circuits to execute features in UE 110. Memory 172, including both volatile and nonvolatile computer-readable storage media, stores program instructions and data 170 to control the operation of UE 110.

[0025] gNB 121 and UE 110 also include several functional modules and circuits that can be implemented and configured to perform embodiments of the present invention. Figure 2In the example shown, gNB 121 includes a set of control functional modules and circuits 180. Simultaneously, RS resource processing circuitry 182 configures DL reception for UE 110. Configuration and control circuitry 181 provides various parameters to configure and control UE 110. UE 110 also includes a set of control functional modules and circuitry 160. Synchronous RS resource processing circuitry 162 coordinates with the base station to configure DL reception for different TRPs. Configuration and control circuitry 161 processes configuration and control parameters from gNB 121.

[0026] Note that the various functional modules and circuits may be implemented and configured via software, firmware, hardware, or any combination thereof. When executed by processors 193 and 173 (e.g., via execution of program code 190 and 170), the functional modules and circuits enable gNB 121 and UE 110 to perform embodiments of the present invention.

[0027] Figure 3A An embodiment of message transmission according to one novel aspect is illustrated. Specifically, gNB 121 transmits higher-layer signaling 1210 to UE 110. UE 110 receives higher-layer signaling 1210 from gNB 121. Higher-layer signaling 1210 indicates to UE 110 a plurality of TCI states "#0" through "#N-1" and a plurality of RS resources. Each of TCI states "#0" through "#N-1" is associated with at least one RS resource. It should be noted that higher-layer signaling 1210 may be a radio resource control (RRC) signal.

[0028] In this embodiment, UE 110 selects RS resource "RS-A" associated with TCI state "#a" and RS resource "RS-B" associated with TCI state "#b" from among the RS resources, and determines that UE 110 can simultaneously receive RS resource "RS-A" and RS resource "RS-B." UE 110 then transmits report 1100 to gNB 121 to notify gNB 121 that UE 110 can simultaneously receive RS resource "RS-A" and RS resource "RS-B." After transmitting report 1100, UE 110 simultaneously applies TCI state "#a" associated with RS resource "RS-A" and TCI state "#b" associated with RS resource "RS-B" for DL reception.

[0029] Figure 4AAn embodiment of message transmission according to one novel aspect is illustrated. Specifically, gNB 121 transmits higher-layer signaling 1212 to UE 110. UE 110 receives higher-layer signaling 1212 from gNB 121. Higher-layer signaling 1212 indicates to UE 110 a plurality of TCI states "#0" through "#M-1" and a plurality of RS resources. Each of TCI states "#0" through "#M-1" is associated with at least one RS resource. It should be noted that higher-layer signaling 1212 may be an RRC signal.

[0030] In this embodiment, UE 110 selects RS resource "RS-X" associated with TCI state "#x" and RS resource "RS-Y" associated with TCI state "#y" from among the RS resources, and determines that UE 110 can simultaneously receive RS resource "RS-X" and RS resource "RS-Y." UE 110 then transmits report 1102 to gNB 121 to notify gNB 121 that UE 110 can simultaneously receive RS resource "RS-X" and RS resource "RS-Y." After transmitting report 1102 to gNB 121, UE 110 simultaneously applies TCI state "#x" associated with RS resource "RS-X" and TCI state "#y" associated with RS resource "RS-Y" for DL reception.

[0031] For example, TCI state "#1" includes RS resource "#1" with Quasi Co-Location (QCL) Type-A and QCL Type-D, and TCI state "#2" includes RS resource "#2" with QCL Type-A and QCL Type-D. UE 110 determines whether RS resource "#1" in TCI state "#1" and RS resource "#2" in TCI state "#2" can be received simultaneously. In this example, it is determined that RS resource "#1" in TCI state "#1" and RS resource "#2" in TCI state "#2" can be received simultaneously. UE 110 then transmits report 1102 to gNB 121 to notify gNB 121 that UE 110 can receive RS resource "#1" and RS resource "#2" simultaneously. Report 1102 includes: (1) RS resource "#1" and RS resource "#2" in the beam group / pair that UE 110 can simultaneously receive; and (2) Layer 1 RSRP corresponding to RS resource "#1" and RS resource "#2." After sending report 1102, UE 110 simultaneously applies TCI state "#1" associated with RS resource "#1" and TCI state "#2" associated with RS resource "#2" for DL reception.

[0032] In some embodiments, before TCI state "#x" and TCI state "#y" are used for DL reception simultaneously, at least one of the following embodiments needs to be satisfied.

[0033] In one embodiment, after receiving report 1102, gNB 121 confirms that UE 110 can simultaneously receive RS resource "RS-X" and RS resource "RS-Y" for DL transmission. Therefore, gNB 121 sends command 1214 to UE 110, instructing UE 110 to simultaneously apply TCI state "#x" associated with RS resource "RS-X" and TCI state "#y" associated with RS resource "RS-Y" for DL transmission. After receiving command 1214, UE 110 simultaneously applies TCI state "#x" and TCI state "#y" for DL reception according to command 1214.

[0034] In one embodiment, the UE 110 calculates the difference between the timing of the RS resource "RS-X" or "RS-Y" and the timing of the reception command 1214. The UE 110 determines whether the difference is equal to or less than a threshold value (e.g., 1280 milliseconds). When the difference is equal to or less than the time threshold, the UE 110 applies the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception at the same time. When the difference is greater than the threshold, the UE 110 may not apply the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception at the same time.

[0035] In one embodiment, the UE 110 determines whether the TCI state "#x" and the TCI state "#y" are detectable. When the TCI state "#x" and the TCI state "#y" are detectable, the UE 110 applies the TCI state "#x" and the TCI state "#y" simultaneously for DL reception. When the TCI state "#x" or the TCI state "#y" cannot be detected, the UE 110 may not apply the TCI state "#x" and the TCI state "#y" simultaneously for DL reception.

[0036] In one embodiment, the UE 110 determines whether a first signal-to-noise ratio (SNR) of the RS resource "RS-X" or a second SNR of the RS resource "RS-Y" is greater than a threshold value (e.g., -3 decibels). When the first SNR of the RS resource "RS-X" and the second SNR of the RS resource "RS-Y" are respectively greater than the threshold value, the UE 110 simultaneously applies the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception. When the first SNR of the RS resource "RS-X" or the second SNR of the RS resource "RS-Y" is not greater than the threshold value, the UE 110 may not simultaneously apply the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception.

[0037] In one embodiment, the UE 110 determines whether a first SNR of a first synchronization signal block (SSB) associated with the TCI state “#x” or a second SNR of a second SSB associated with the TCI state “#y” is greater than a threshold value (e.g., -4 dB). When the first SNR of the first SSB associated with the TCI state “#x” and the second SNR of the second SSB associated with the TCI state “#y” are respectively greater than the threshold value, the UE 110 simultaneously applies the TCI state “#x” and the TCI state “#y” for DL reception. When the first SNR of the first SSB associated with the TCI state “#x” or the second SNR of the second SSB associated with the TCI state “#y” is not greater than the threshold value, the UE 110 may not simultaneously apply the TCI state “#x” and the TCI state “#y” for DL reception.

[0038] In one embodiment, the UE 110 calculates the difference between the first SNR of the RS resource "RS-X" and the second SNR of the RS resource "RS-Y". The UE 110 determines whether the difference is equal to or less than a threshold value (e.g., 4 dB). When the difference between the first SNR of the RS resource "RS-X" and the second SNR of the RS resource "RS-Y" is equal to or less than the threshold value, the UE 110 simultaneously applies the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception. When the difference between the first SNR of the RS resource "RS-X" and the second SNR of the RS resource "RS-Y" is greater than the threshold value, the UE 110 may not simultaneously apply the TCI state "#x" associated with the RS resource "RS-X" and the TCI state "#y" associated with the RS resource "RS-Y" for DL reception.

[0039] In one embodiment, UE 110 calculates the difference between a first reference signal receiving power (RSRP) of RS resource “RS-X” and a second RSRP of RS resource “RS-Y”. UE 110 determines whether the difference is equal to or less than a threshold value (e.g., 6 dB). When the difference between the first RSRP of RS resource “RS-X” and the second RSRP of RS resource “RS-Y” is equal to or less than the threshold value, UE 110 simultaneously applies the TCI state “#x” associated with RS resource “RS-X” and the TCI state “#y” associated with RS resource “RS-Y” for DL reception. When the difference between the first RSRP of RS resource “RS-X” and the second RSRP of RS resource “RS-Y” is greater than the threshold value, UE 110 may not simultaneously apply the TCI state “#x” associated with RS resource “RS-X” and the TCI state “#y” associated with RS resource “RS-Y” for DL reception.

[0040] Figure 5 1 is a flow chart of a method for performing downlink reception with multiple TCI states according to one novel aspect. In step 501, a UE receives higher layer signaling from a network. The higher layer signaling indicates to the UE a plurality of TCI states and a plurality of RS resources. Each of the TCI states is associated with at least one RS resource. In step 502, the UE determines that the UE is capable of simultaneously receiving a first RS resource and a second RS resource from the RS resources. In step 503, the UE sends a report to the network notifying the network that the UE is capable of simultaneously receiving the first RS resource and the second RS resource. In step 504, the UE simultaneously applies a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource for downlink reception.

[0041] Figures 6A to 6H 6 is a flow chart of a method for performing simultaneous downlink transmission with multiple TCI states according to one novel aspect. In step 601, a UE receives higher layer signaling from a network. The higher layer signaling indicates to the UE multiple TCI states and multiple RS resources. Each TCI state is associated with at least one RS resource. In step 602, the UE determines whether the UE can simultaneously receive a first RS resource and a second RS resource from the RS resources.

[0042] In step 603, the UE sends a report to the network to inform the network that the UE can simultaneously receive the first RS resource and the second RS resource. In step 604, the UE simultaneously applies the first TCI state associated with the first RS resource and the second TCI state associated with the second RS resource for DL reception.

[0043] In some embodiments, before step 604 of simultaneously applying the first TCI state and the second TCI state to DL reception, the UE may optionally perform at least one of the following steps.

[0044] In step 604B, the UE receives a command from the network to simultaneously apply the first TCI state associated with the first RS resource and the second TCI state associated with the second RS resource for DL reception. The UE then performs step 604 according to the command. In some embodiments, step 604B should be performed after step 603.

[0045] In step 604C, the UE determines whether the difference is equal to or less than a threshold. The difference is the difference between the timing of the first RS resource or the second RS resource and the timing of the received command. When the difference is equal to or less than the threshold, the UE performs step 604.

[0046] In step 604D, the UE determines whether the first TCI state or the second TCI state is detectable. When the first TCI state and the second TCI state are detectable, the UE performs step 604.

[0047] In step 604E, the UE determines whether the first SNR of the first RS resource or the second SNR of the second RS resource is greater than a threshold. When the first SNR of the first RS resource and the second SNR of the second RS resource are respectively greater than the threshold, the UE performs step 604.

[0048] In step 604F, the UE determines whether a first SNR of a first SSB associated with the first TCI state or a second SNR of a second SSB associated with the second TCI state is greater than a threshold. When the first SNR of the first SSB associated with the first TCI state and the second SNR of the second SSB associated with the second TCI state are greater than the threshold, the UE performs step 604.

[0049] In step 604G, the UE determines whether the difference is equal to or less than a threshold. The difference is the difference between the first SNR of the first RS resource and the second SNR of the second RS resource. When the difference is equal to or less than the threshold, the UE executes step 604.

[0050] In step 604H, the UE determines whether the difference is equal to or less than a threshold. The difference is the difference between the first RSRP of the first RS resource and the second RSRP of the second RS resource. When the difference is equal to or less than the threshold, the UE executes step 604.

[0051] Figure 7This invention is a flow chart of a method for performing DL reception with multiple TCI states according to one novel aspect. In step 701, a base station transmits higher layer signaling from a network. The higher layer signaling indicates multiple TCI states and multiple RS resources to a UE. Each TCI state is associated with at least one RS resource. In step 702, the base station receives a report from the UE. The report notifies the base station that the UE can simultaneously receive a first RS resource and a second RS resource among the RS resources. In step 703, the base station transmits a command to the UE to simultaneously apply a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource for DL reception.

[0052] Although the present invention has been described in conjunction with certain specific embodiments for purposes of guidance, it is not limited thereto. Accordingly, various modifications, adaptations and combinations of the various features of the described embodiments may be practiced without departing from the scope of the invention as set forth in the claims.

Claims

1. A downlink reception method having multiple transmission configuration indication states, comprising: Receiving, by a user equipment (UE), higher layer signaling from a network, wherein the higher layer signaling indicates to the UE a plurality of transmission configuration indication (TCI) states and a plurality of reference signal (RS) resources, and each of the TCI states is associated with at least one of the RS resources; Determining, by the UE, that the UE can simultaneously receive a first RS resource and a second RS resource among the RS resources; The UE sends a report to the network, notifying the network that the UE can simultaneously receive the first RS resource and the second RS resource; as well as The UE simultaneously applies a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource for downlink (DL) reception.

2. The method of claim 1, further comprising: The UE receives a command from the network, wherein the command instructs the UE to switch to the first TCI state and the second TCI state.

3. The method of claim 2, further comprising: determining, by the UE, whether a difference is equal to or less than a threshold, wherein the difference is a difference between a timing of the first RS resource or the second RS resource and a timing of receiving the command; The step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the difference is equal to or less than the threshold, the UE applies the first TCI state and the second TCI state simultaneously for the DL reception.

4. The method of claim 1 , further comprising: Determining, by the UE, whether the first TCI state and the second TCI state are detectable; The step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the first TCI state and the second TCI state are detectable, the UE simultaneously applies the first TCI state and the second TCI state for the DL reception.

5. The method according to claim 4, wherein The step of determining whether the first TCI state and the second TCI state are detectable further comprises: determining, by the UE, whether a first signal-to-noise ratio (SNR) of the first RS resource or a second SNR of the second RS resource is greater than a threshold; When the first TCI state and the second TCI state are detectable, the step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the first SNR of the first RS resource and the second SNR of the second RS resource are respectively greater than the threshold, the UE simultaneously applies the first TCI state and the second TCI state for the DL reception.

6. The method according to claim 4, wherein The step of determining whether the first TCI state and the second TCI state are detectable further includes: determining, by the UE, whether a first signal-to-noise ratio (SNR) of a first synchronization signal block (SSB) associated with the first TCI state or a second SNR of a second SSB associated with the second TCI state is greater than a threshold; When the first TCI state and the second TCI state are detectable, the step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the first SNR of the first SSB and the second SNR of the second SSB are respectively greater than the threshold, the UE simultaneously applies the first TCI state and the second TCI state for the DL reception.

7. The method of claim 1 , further comprising: Determining, by the UE, whether a difference is equal to or less than a threshold, wherein the difference is a difference between a first signal-to-noise ratio (SNR) of the first RS resource and a second SNR of the second RS resource; The step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the difference is equal to or less than the threshold, the UE applies the first TCI state and the second TCI state simultaneously for the DL reception.

8. The method of claim 1 , further comprising: determining, by the UE, whether a difference is equal to or less than a threshold, the difference being a difference between a first reference signal received power (RSRP) of the first RS resource and a second RSRP of the second RS resource; The step of simultaneously applying the first TCI state and the second TCI state for the DL reception further includes: When the difference is equal to or less than the threshold, the UE applies the first TCI state and the second TCI state simultaneously for the DL reception.

9. A user equipment (UE) for downlink reception with multiple transmission configuration indication states, comprising: a transceiver configured to receive higher layer signaling from a network, wherein the higher layer signaling indicates a plurality of transmission configuration indication (TCI) states and a plurality of reference signal (RS) resources to the UE, and each of the TCI states is associated with at least one of the RS resources; as well as Simultaneously, the RS resource processing circuit is configured to determine that the UE can simultaneously receive the first RS resource and the second RS resource in the RS resources; The transceiver sends a report to the network, notifying the network that the UE can simultaneously receive the first RS resource and the second RS resource, and the simultaneous RS resource processing circuit simultaneously applies the first TCI state associated with the first RS resource and the second TCI state associated with the second RS resource for downlink (DL) reception.

10. The UE according to claim 9, wherein: The transceiver also receives a command from the network for simultaneously switching the RS resource processing circuit to the first TCI state and the second TCI state.

11. The UE according to claim 10, wherein: The RS resource processing circuit further: determining whether a difference value between a timing of the first RS resource or the second RS resource and a timing of receiving the command is equal to or less than a threshold value; as well as When the difference is equal to or less than the threshold, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

12. The UE according to claim 9, wherein: The RS resource processing circuit is also used for: determining whether the first TCI state and the second TCI state are detectable; and When the first TCI state and the second TCI state are detectable, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

13. The UE according to claim 12, wherein: The RS resource processing circuit further: determining whether a signal-to-noise ratio (SNR) of the first RS resource or the SNR of the second RS resource is greater than a threshold; and When the SNR of the first RS resource and the SNR of the second RS resource are respectively greater than the threshold, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

14. The UE according to claim 12, wherein: The RS resource processing circuit further: determining whether a signal-to-noise ratio (SNR) of a first synchronization signal block (SSB) associated with the first TCI state or a signal-to-noise ratio (SNR) of a second SSB associated with the second TCI state is greater than a threshold; as well as When the SNR of the first SSB and the SNR of the second SSB are respectively greater than the threshold, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

15. The UE according to claim 9, wherein: The RS resource processing circuit is also used for: determining whether a difference is equal to or less than a threshold, wherein the difference is a difference between a signal-to-noise ratio (SNR) of the first RS resource and an SNR of the second RS resource; as well as When the difference is equal to or less than the threshold, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

16. The UE according to claim 9, wherein The RS resource processing circuit further: determining whether a difference is equal to or less than a threshold, wherein the difference is between a first reference signal received power (RSRP) of the first RS resource and a second RSRP of the second RS resource; as well as When the difference is equal to or less than a threshold, the first TCI state and the second TCI state are simultaneously applied for the DL reception.

17. A downlink reception method having multiple transmission configuration indication states, comprising: A base station (BS) sends higher layer signaling to a user equipment (UE), wherein the higher layer signaling indicates a plurality of transmission configuration indication (TCI) states and a plurality of reference signal (RS) resources to the UE, and each of the TCI states is associated with at least one of the RS resources; as well as The BS receives a report from the UE, wherein the report notifies the BS that the UE can simultaneously receive a first RS resource and a second RS resource among the RS resources.

18. The method of claim 17, further comprising: The BS sends a command to the UE, instructing the UE to switch to a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource.

19. A base station (BS), comprising: Transceiver: for sending higher layer signaling to a user equipment (UE), wherein the higher layer signaling indicates a plurality of transmission configuration indication (TCI) states and a plurality of reference signal (RS) resources to the UE, and each of the TCI states is associated with at least one of the RS resources; as well as A report is received from the UE, wherein the report notifies the BS that the UE is capable of simultaneously receiving a first RS resource and a second RS resource among the RS resources.

20. The BS of claim 19, further comprising: a simultaneous RS resource processing circuit for determining a command for the UE to simultaneously apply a first TCI state associated with the first RS resource and a second TCI state associated with the second RS resource for downlink (DL) reception; The transceiver sends the command to the UE to enable the UE to switch to the first TCI state and the second TCI state.

21. A non-volatile computer-readable storage medium storing program instructions and data, wherein when the program instructions and data are executed by a processor of a device, the device is caused to execute the method according to any one of claims 1 to 8.

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