WO2022028414A1

WO2022028414A1 - Power control setting activation for uplink transmission

Info

Publication number: WO2022028414A1
Application number: PCT/CN2021/110303
Authority: WO
Inventors: Cheng-Rung Tsai
Original assignee: MediaTek Inc
Current assignee: MediaTek Inc
Priority date: 2020-08-03
Filing date: 2021-08-03
Publication date: 2022-02-10
Anticipated expiration: 2023-02-03

Abstract

Apparatus and methods are for configuring activation for UL transmission. In one novel aspect, power control setting activation for UL transmission is provided. A UE is configured, by a BS, with a plurality of TCI states and a plurality of power control settings for UL transmission. After being configured with the at least one TCI state and the at least one power control setting, the UE receives, from the BS, a higher layer configuration that associates TCI state (s) and power control setting (s) with index (s). Accordingly, when the UE receives, from the BS, DCI carrying an index in a TCI field, the UE can select a corresponding TCI state and a corresponding power control setting based on the higher layer configuration. The UE performs UL transmission with the BS according to the selected TCI state.

Description

POWER CONTROL SETTING ACTIVATION FOR UPLINK TRANSMISSION

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. §119 from U.S. provisional application serial number 63/060,169, entitled “Configuration Activation for UL Transmission, ” filed on August3, 2020, the subject matter of which is incorporated herein by reference.

TECHNICAL FIELD

The disclosed embodiments relate generally to wireless communication, and, more particularly, to power control setting activation for uplink transmission.

BACKGROUND

In conventional network of 3rd generation partnership project (3GPP) 5G new radio (NR) , the user equipment (UE) can be configured, by the base station (BS) , with at least one transmission configuration indication (TCI) state for downlink (DL) transmission. One 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. After being configured with the TCI state (s) , the UE can receive, from the BS, an activation command having mapping relation of configured TCI state (s) and codepoint (s) . Accordingly, when the UE receives, from the BS, downlink control information (DCI) carrying a codepoint in a field, the UE can determine a corresponding TCI state based on the mapping relation of configured TCI state (s) and codepoint (s) . Then, the UE can utilize the corresponding TCI state for determining physical downlink shared channel (PDSCH) antenna port QCL assumption. In other words, the UE can determine the PDSCH antenna port QCL assumption according to the RS (s) and the associated QCL type (s) of the QCL-Info (s) configured in the corresponding TCI state.

Regarding uplink (UL) transmission, early activations and indications associated with QCL are also needed for improving the network efficiency. However, how to provide necessary parameters in addition to QCL assumption (s) for UL transmission has not been discussed yet.

SUMMARY

Apparatus and methods are provided for configuring activation for uplink (UL) transmission. In one novel aspect, power control setting activation for UL transmission is provided. In particular, a user equipment (UE) can be configured, by a base station (BS) , with a plurality of transmission configuration indication (TCI) states and a plurality of power control settings for UL transmission. After being configured with the at least one TCI state and the at least one power control setting, the UE can receive, from the BS, higher layer configuration that associates TCI state (s) and power control setting (s) with index (s) (i.e., codepoint (s) ) . Accordingly, when the UE receives, from the BS, downlink control information (DCI) carrying an index in a TCI field, the UE can select a corresponding TCI state and a corresponding power control setting based on the higher layer configuration. The UE performs UL transmission with the BS according to the selected TCI state and the selected power control setting or according to the selected TCI state.

In one embodiment, a UE receives a higher layer configuration. The higher layer configuration indicates to the UE a plurality of TCI states and a plurality of power control settings. Then, the UE performs an UL transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings.

In another embodiment, a BS transmits a higher layer configuration. The higher layer configuration indicates to a UE a plurality of TCI states and a plurality of power control settings. The BS transmits a higher layer configuration that associates a TCI state identification and a power control setting identification with an index of a DCI. The BS transmits the DCI including the index. The BS performs an UL transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings. The selected TCI state corresponds to the TCI state identification of the higher layer configuration and the selected power control setting corresponds to the power control setting identification of the higher layer configuration.

Other embodiments and advantages are described in the detailed description below. This summary does not purport to define the invention. The invention is defined by the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, where like numerals indicate like components, illustrate embodiments of the invention.

Figure 1 illustrates an exemplary 5Gnew radio network supporting power control setting activation for uplink transmission in accordance with embodiments of the current invention.

Figure 2 is a simplified block diagram of the gNB and the UE in accordance with embodiments of the current invention.

Figure 3A illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 3B illustrates one embodiment of the higher layer configuration in accordance with embodiments of the current invention.

Figure 4A illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 4B illustrates one embodiment of the higher layer configuration in accordance with embodiments of the current invention.

Figure 5 illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 6A illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 6B illustrates one embodiment of the higher layer configuration in accordance with embodiments of the current invention.

Figure 7 illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 8A illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 8B illustrates one embodiment of the higher layer configuration in accordance with embodiments of the current invention.

Figure 9 illustrates one embodiment of message transmissions in accordance with embodiments of the current invention.

Figure 10 is a flow chart of a method of configuring activation for UL transmission in accordance with embodiments of the current invention.

Figures 11A to 11C are flow charts of a method of configuring activation for UL transmission in accordance with embodiments of the current invention.

Figure 12 is a flow chart of a method of configuring activation for UL transmission in accordance with embodiments of the current invention.

DETAILED DESCRIPTION

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

Figure 1 illustrates an exemplary 5Gnew radio (NR) network 100 supporting power control setting activation for uplink (UL) transmission in accordance with aspects of the current invention. The 5G NR network 100 includes a user equipment (UE) 110 communicatively connected to a gNB 121 operating in a licensed band (e.g., 30GHz～300GHz for mmWave) of an access network 120 which provides radio access using a Radio Access Technology (RAT) (e.g., the 5G NR technology) . The access network 120 is connected to a 5G core network 130 by means of the NG interface, more specifically to a User Plane Function (UPF) by means of the NG user-plane part (NG-u) , and to a Mobility Management Function (AMF) by means of the NG control-plane part (NG-c) . One gNB can be connected to multiple UPFs/AMFs for the purpose of load sharing and redundancy. The UE 110 may be a smart phone, a wearable device, an Internet of Things (IoT) device, and a tablet, etc. Alternatively, UE 110 may be a Notebook (NB) or Personal Computer (PC) inserted or installed with a data card which includes a modem and RF transceiver (s) to provide the functionality of wireless communication.

The gNB 121 may provide communication coverage for a geographic coverage area in which communications with the UE 110 is supported via a communication link 101. The communication link 101 shown in the5G NR network 100 may include UL transmissions from the UE 110 to the gNB 121 (e.g., on the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) ) or downlink (DL) transmissions from the gNB 121 to the UE 110 (e.g., on the Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH) ) .

Figure 2 is a simplified block diagram of the gNB 121 and the UE 110 in accordance with embodiments of the present invention. For the gNB 121, an antenna 197 transmits and receives radio signal. A radio frequency (RF) transceiver module 196, coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 193. RF transceiver 196 also converts received baseband signals from the processor193, converts them to RF signals, and sends out to antenna 197. Processor 193 processes the received baseband signals and invokes different functional modules and circuits to perform features in the gNB121. Memory 192 stores program instructions and data 190 to control the operations of the gNB 121.

Similarly, for the UE 110, antenna 177 transmits and receives RF signals. RF transceiver module 176, coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 173. The RF transceiver 176 also converts received baseband signals from the processor173, converts them to RF signals, and sends out to antenna 177. Processor 173 processes the received baseband signals and invokes different functional modules and circuits to perform features in the UE 110. Memory 172 stores program instructions and data 170 to control the operations of the UE110.

The gNB 121 and the UE 110 also include several functional modules and circuits that can be implemented and configured to perform embodiments of the present invention. In the example of figure 2, the gNB121 includes a set of control functional modules and circuit 180. UL transmission handling circuit182performs UL transmission with the UE 110. Configuration and control circuit 181 provides different parameters to configure and control the UE 110. The UE 110 includes a set of control functional modules and circuit 160. UL transmission handling circuit 162 performs UL transmission with the gNB 121. Configuration and control circuit 161 handles configuration and control parameters from the gNB 121.

Note that the different functional modules and circuits can be implemented and configured by software, firmware, hardware, and any combination thereof. The function modules and circuits, when executed by the processors 193 and 173 (e.g., via executing program codes 190 and 170) , allow the gNB121 and the UE 110 to perform embodiments of the present invention.

Figure 3A illustrates one embodiment of message transmissions in accordance with one novel aspect. In particular, the gNB 121 transmits a higher layer configuration 1210 to the UE 110. The UE 110 receives the higher layer configuration 1210 from the gNB 121. The higher layer configuration 1210 indicates to the UE 110 a plurality of TCI states and a plurality of power control settings. It should be noted that the higher layer configuration 1210 may be a radio resource control (RRC) signal.

Figure 3B illustrates one embodiment of the higher layer configuration 1210in accordance with one novel aspect. In particular, each TCI state includes one TCI state identification, and each power control setting includes one power control setting identification. In this embodiment, the higher layer configuration 1210 indicates: (1) ‘N’ number of TCI states with the corresponding TCI state identifications from ‘#0’ to ‘#N-1’ ; and (2) ‘M’ number of power control settings with the corresponding power control setting identifications from ‘#0’ to ‘#M-1’ .

Figure 4A illustrates one embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1210, the gNB 121 transmits a higher layer configuration 1212 to the UE 110. The UE 110 receives the higher layer configuration 1212 from the gNB 121. The higher layer configuration 1212 includes a plurality of commands associating TCI state identification (s) and power control setting identification (s) with index (s) of downlink control information (DCI) . It should be noted that the higher layer configuration 1212may be a media access control-control element (MAC-CE) or an RRC information element (IE) .

Figure 4B illustrates one embodiment of the higher layer configuration 1212in accordance with one novel aspect. In particular, each of the commands maps a TCI state identification and a power control setting identification to an index (i.e., codepoint of a DCI field) . In this embodiment, the higher layer configuration 1212 includes four commands. The first command maps TCI state identification ‘#4’ and power control setting identification ‘#15’ to index ‘0’ . The second command maps TCI state identification ‘#8’ and power control setting identification ‘#8’ to index ‘1’ . The third command maps TCI state identification ‘#15’ and power control setting identification ‘#0’ to index ‘2’ . The fourth command maps TCI state identification ‘#2’ and power control setting identification ‘#4’ to index ‘3’ .

Figure 5 illustrates one embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1212, the gNB 121 transmits a DCI 1214 to the UE110. The UE 110 receives the DCI 1214 and determines whether an index of the DCI 1214 matches any index of one of the commands of the higher layer configuration 1212. In this embodiment, the index of the DCI 1214 is indicated in a TCI field of the DCI 1214 and the index of the DCI 1214 is ‘1’ . Accordingly, the UE 110 determines that the index ‘1’ of the DCI 1214 matches the index of the second command of the higher layer configuration 1212.

Because the index ‘1’ is associated with TCI state identification ‘#8’ and power controlling setting identification ‘#8’ , the UE 110 selects the TCI state corresponding to TCI state identification ‘#8’ and the power control setting corresponding to power control setting identification ‘#8’ as the TCI state and the power control setting for performing UL transmission with the gNB 121.

In some implementations, it should be noted that: (1) in addition to the power control setting identification, each of the power control settings includes at least one power control parameter (e.g., P0 value, closed loop index, etc. ) ; and (2) in addition to the TCI state identification, each of the TCI state includes at least one reference signal (RS) identification corresponding to at least one RS. To perform the UL transmission with the gNB 121, the UE 110 utilizes the at least one power control parameter of the selected power control setting and the at least one RS corresponding to the at least one RS identification in the selected TCI state.

In these implementations, if the selected power control setting is without any pathless RS identification, the UE 110 utilizes the at least one RS corresponding to the at least one RS identification in the selected TCI state as the pathloss RS (s) for performing the UL transmission. If the selected power control setting includes a pathloss RS identification, the UE 110 utilizes the pathloss RS corresponding to the pathloss RS identification as the pathloss RS for performing the UL transmission.

Figure 6A illustrates one embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1210, the gNB 121 transmits a higher layer configuration 1212’ to the UE 110. The UE 110 receives the higher layer configuration 1212’ from the gNB 121. The higher layer configuration 1212’ includes: (1) a first part commands associating TCI state identification (s) with index (s) of DCI; and (2) a second part commands associating power control setting identification (s) with the TCI state identification (s) . It should be noted that the higher layer configuration 1212’ may be a MAC-CE or an RRC IE.

Figure 6B illustrates one embodiment of the higher layer configuration 1212’ in accordance with one novel aspect. In particular, each of the first part commands maps a TCI state identification to an index (i.e., codepoint of a DCI field) , and each of the second part commands maps a TCI state identification to a power control setting identification. In this embodiment, the higher layer configuration 1212’ includes eight commands, and four commands belongs to the first part commands and four commands belongs to the second part commands. Regarding the first part commands, the first command maps TCI state identification ‘#4’ to index ‘0’ , the second command maps TCI state identification ‘#8’ to index ‘1’ , the third command maps TCI state identification ‘#15’ to index ‘2’ , and the fourth command maps TCI state identification ‘#2’ to index ‘3’ . Regarding the second part commands, the fifth command maps power controlling setting identification ‘#15’ to TCI state identification ‘#4’ , the sixth command maps power controlling setting identification ‘#8’ to TCI state identification ‘#8’ , the seventh command maps power controlling setting identification ‘#0’ to TCI state identification ‘#15’ , and the eighth command maps power controlling setting identification ‘#4’ to TCI state identification ‘#2’ .

Figure 7 illustrates one embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1212’, the gNB 121 transmits a DCI 1214’ to the UE110. The UE 110 receives the DCI 1214’ and determines whether an index of the DCI 1214’ matches any index of one of the first part commands of the higher layer configuration 1212’. In this embodiment, the index of the DCI 1214’ is indicated in a TCI field of the DCI 1214’ and the index of the DCI 1214 is ‘2’ . Accordingly, the UE 110 determines that the index ‘2’ of the DCI 1214’ matches the index of the third command of the higher layer configuration 1212’.

Because the index ‘2’ is associated with TCI state identification ‘#15’ and the TCI state identification ‘#15’ is associated with power controlling setting identification ‘#0’ , the UE 110 selects the TCI state corresponding to TCI state identification ‘#15’ and the power control setting corresponding to power control setting identification ‘#0’ as the TCI state and the power control setting for performing UL transmission with the gNB 121.

In some embodiments, the first part commands and the second part commands may be included in the same higher layer configuration (e.g., the same MAC-CE or the same RRC IE) . In some embodiments, the first part commands and the second part commands may be included in different higher layer configurations (e.g., different MAC-CEs or different RRC IEs) .

Figure 8A illustrates another embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1210, the gNB 121 transmits a higher layer configuration 1216 to the UE 110. The UE 110 receives the higher layer configuration 1216 from the gNB 121. The higher layer configuration 1216includes a plurality of commands.

Figure 8B illustrates one embodiment of the higher layer configuration 1216 in accordance with one novel aspect. In particular, in addition to mapping relation between TCI state identification, power control setting identification and index, each of the commands has a field indicating whether a corresponding power control setting identification exists in another field. If a command maps a TCI state identification and a power control setting identification with an index, the field of this command is set to the value (e.g., ‘1’ ) indicating that the corresponding power control setting identification exists in another field. If a command maps a TCI state identification to an index without mapping any power control identification to the same index, the field of this command is set to the value (e.g., ‘0’ ) indicating that the corresponding power control setting identification does not exist.

In this embodiment, the higher layer configuration 1216 includes four commands. The first command maps TCI state identification ‘#4’ and power control setting identification ‘#15’ to index ‘0’ so that the field of the first command is set to ‘1’ indicating the corresponding power control setting identification (i.e., power control setting identification ‘#15’ ) exists in the first command. The second command maps TCI state identification ‘#8’ and power control setting identification ‘#8’ to index ‘1’ and the field of the second command is set to ‘1’ indicating the corresponding power control setting identification (i.e., power control setting identification ‘#8’ ) exists in the second command. The third command maps TCI state identification ‘#15’ and power control setting identification ‘#0’ to index ‘2’ and the field of the third command is set to ‘1’ indicating the corresponding power control setting identification (i.e., power control setting identification ‘#0’ ) exists in the third command. The fourth command maps TCI state identification ‘#2’ to index ‘3’ and the field of the fourth command is set to ‘0’ indicating a corresponding power control setting identification does not exist in the fourth command.

Figure 9illustrates another embodiment of message transmissions in accordance with one novel aspect. After the transmission of the higher layer configuration 1216, the gNB 121 transmits a DCI 1218to the UE110. The UE 110 receives the DCI 1218and determines whether an index of the DCI 1218matches any index of one of the commands of the higher layer configuration 1216.

In one implementation, if the index of the DCI 1218is ‘1’ , the UE 110 determines that the index ‘1’ of the DCI 1218matches the index of the second command of the higher layer configuration 1216. Then, the UE 110 determines that there is a corresponding power control setting identification because the field of the second command of the higher layer configuration 1216 is set to ‘1’ . The UE 110 selects the TCI state corresponding to TCI state identification ‘#8’ and the power control setting corresponding to power control setting identification ‘#8’ as the TCI state and the power control setting for performing UL transmission with the gNB 121. In this implementation, if the selected power control setting is without any pathloss RS identification, the UE 110 utilizes the at least one RS corresponding to the at least one RS identification in the selected TCI state as the pathloss RS (s) for performing the UL transmission. If the selected power control setting includes a pathloss RS identification, the UE 110 utilizes the pathloss RS corresponding to the pathloss RS identification as the pathloss RS for performing the UL transmission.

In another implementation, if the index of the DCI 1218 is ‘3’ , the UE 110 determines that the index ‘3’ of the DCI 1214’ matches the index of the fourth command of the higher layer configuration 1216. Then, the UE 110 determines that there is no corresponding power control setting identification because the field of the fourth command of the higher layer configuration 1216 is set to ‘0’ . The UE 110 selects the TCI state corresponding to TCI state identification ‘#2’ as the TCI state for performing UL transmission with the gNB 121. In this implementation, the UE 110 utilizes a RS corresponding to the selected TCI state as a pathloss RS for performing UL transmission.

Figure 10is a flow chart of a method of configuring activation for UL transmission in accordance with one novel aspect. In step S1001, a UE receives a higher layer configuration. The higher layer configuration indicates to the UE a plurality of TCI states and a plurality of power control settings. In step S1002, the UE performs an UL transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings.

Figures 11A to 11C are flow charts of a method of configuring activation for UL transmission in accordance with one novel aspect. In step S1101, a UE receives a first higher layer configuration. The first higher layer configuration indicates to the UE a plurality of TCI states and a plurality of power control settings. Each of the TCI state includes a TCI state identification and at least one RS identification. Each of the power control settings includes a power control setting identification and at least one power control parameter.

In step S1102, the UE receives a second higher layer configuration. The second higher layer configuration includes at least one command. Each of the at least one command: (1) maps one TCI state identification and one power control setting identification to one index; or (2) maps one TCI state identification to one index. In step S1103, the UE receives a DCI. In step S1104, the UE determines that an index of the DCI matches the index of one of the at least one command.

When the one of the at least one command maps a TCI state identification and a power control setting identification to an index, in step S1105, the UE determines that the TCI state identification associated with the one of the at least one command corresponds to a selected TCI state and the power control setting identification associated with the one of the at least one command corresponds to a selected power control setting. In step S1106, the UE determines whether the selected power control setting includes a pathloss RS identification.

If the result of step S1106 is yes, in step S1107, the UE utilizes a pathloss RS corresponding to the pathloss RS identification of the selected power control setting as the pathloss RS for performing an UL transmission. In step S1108, the UE performs the UL transmission according to the selected TCI state and the selected power control setting.

If the result of step S1106 is no, in step S1109, the UE utilizes at least one RS corresponding to the at least one RS identification in the selected TCI state as the pathloss RS for performing an UL transmission. In step S1108, the UE performs the UL transmission according to the selected TCI state and the selected power control setting.

When the one of the at least one command maps a TCI state identification to the index, in step S1110, the UE determines that the TCI state identification associated with the one of the at least one command corresponds to a selected TCI state. In step S1111, the UE utilizes at least one RS corresponding to the least one RS identification in the selected TCI state as the pathloss RS for performing the UL transmission. In step S1112, the UE performs an UL transmission according to the selected TCI state.

In another embodiment, for each of the at least one command of the higher layer configuration, the command includes a field indicating whether a corresponding power control setting identification exists in another field.

Figure 12 is a flow chart of a method of configuring activation for UL transmission in accordance with one novel aspect. In step S1201, a BS transmits a higher layer configuration. The higher layer configuration indicates to a UE a plurality of TCI states and a plurality of power control settings. In step S1202, the BS transmits a higher layer configuration. The higher layer configuration includes at least one command and each of the at least one command: (1) maps a TCI state identification and a power control setting identification to an index; or (2) maps a TCI state identification to an index.

In step S1203, the BS transmits a DCI. An index of the DCI matches the index of one of the at least one command. In step S1204, the BS performs an UL transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings. The selected TCI state corresponds to the TCI state identification of the one of the at least one command and the selected power control setting corresponds to the power control setting identification of the one of the at least one command.

Although the present invention has been described in connection with certain specific embodiments for instructional purposes, the present invention is not limited thereto. Accordingly, various modifications, adaptations, and combinations of various features of the described embodiments can be practiced without departing from the scope of the invention as set forth in the claims.

Claims

A method, comprising:

receiving a first higher layer configuration by a user equipment (UE) , wherein the first higher layer configuration indicates to the UE a plurality of transmission configuration indication (TCI) states and a plurality of power control settings; and

performing an uplink transmission by the UE according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings.
The method of claim 1, further comprising:

receiving, by the UE, a second higher layer configuration that associates a TCI state identification and a power control setting identification with an index of a downlink control information (DCI) ;

receiving the index of the DCI by the UE;

according to the index, determining, by the UE, that the TCI state identification of the second higher layer configuration corresponds to the selected TCI state and the power control setting identification of the second higher layer configuration corresponds to the selected power control setting.
The method of claim 2, wherein the second higher layer configuration includes a command that maps the TCI state identification to the index of the DCI.
The method of claim 2, wherein the second higher layer configuration includes a command that has a field indicating whether a power control setting identification corresponding to the index exists and has another filed indicating the power control setting identification.
The method of claim 2, wherein the second higher layer configuration includes a command that maps the power control setting identification to the TCI state identification.
The method of claim 1, wherein each of the power control settings includes a power control setting identification and at least one power control parameter, and each of the TCI state includes a TCI state identification and at least one reference signal (RS) identification.
The method of claim 6, wherein at least one of the power control settings includes a pathloss RS identification.
The method of claim 6, further comprising:

determining, by the UE, that the selected power control setting is without pathloss RS identification; and

utilizing, by the UE, at least one RS corresponding to the at least one RS identification in the selected TCI state as at least one pathloss RS.
The method of claim 6, wherein the uplink transmission is performed by the UE according to the selected TCI state, and the method further comprises:

utilizing, by the UE, at least one RS corresponding to the at least one RS identification in the selected TCI state as at least one pathloss RS.
A user equipment (UE) comprising:

a transceiver that receives a first higher layer configuration from a network, wherein the higher layer configuration indicates to the UE a plurality of transmission configuration indication (TCI) states and a plurality of power control settings; and

an uplink transmission handling circuit that performs an uplink transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings.
The UE of claim 10, wherein the transceiver further:

receives, by the UE, a second higher layer configuration that associates a TCI state identification and a power control setting identification with an index of a downlink control information (DCI) ; and

receives the index of the DCI;

wherein the uplink transmission handling circuit further:

according to the index, determines that the TCI state identification of the second higher layer configuration corresponds to the selected TCI state and the power control setting identification of the second higher layer configuration corresponds to the selected power control setting.
The UE of claim 11, wherein the second higher layer configuration includes a command that maps the TCI state identification to the index of the DCI.
The UE of claim 11, wherein the second higher layer configuration includes a command that has a field indicating whether a power control setting identification corresponding to the index exists, and has another filed indicating the power control setting identification.
The UE of claim 11, wherein the second higher layer configuration includes a command that maps the power control setting identification to the TCI state identification.
The UE of claim 10, wherein each of the power control settings includes a power control setting identification and at least one power control parameter, and each of the TCI state includes a TCI state identification and at least one reference signal (RS) identification.
The UE of claim 15, wherein at least one of the power control settings includes a pathloss RS identification.
The UE of claim 15, wherein the uplink transmission handling circuit further:

determining that the selected power control setting is without pathloss RS identification;

utilizing at least one RS corresponding to the at least one RS identification in the selected TCI state as at least one pathloss RS.
The UE of claim 15, wherein the uplink transmission is performed according to the selected TCI state, and the uplink transmission handling circuit further:

utilizing at least one RS corresponding to the at least one RS identification in the selected TCI state as at least one pathloss RS.
A method, comprising:

transmitting a first higher layer configuration by a base station (BS) , wherein the first higher layer configuration indicates to a user equipment (UE) a plurality of transmission configuration indication (TCI) states and a plurality of power control settings;

transmitting a second higher layer configuration by the BS, wherein the second higher layer configuration associates a TCI state identification and a power control setting identification with an index of a downlink control information (DCI) ;

transmitting the DCI including the index by the BS; and

performing an uplink transmission by the BS according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings, wherein the selected TCI state corresponds to the TCI state identification of the second higher layer configuration and the selected power control setting corresponds to the power control setting identification of the second higher layer configuration.
A base station (BS) comprising:

a transceiver that:

transmit a first higher layer configuration, wherein the first higher layer configuration indicates to a user equipment (UE) a plurality of transmission configuration indication (TCI) states and a plurality of power control settings;

transmit a second higher layer configuration that associates a TCI state identification and a power control setting identification with an index of a downlink control information (DCI) ; and

transmit the DCI including the index;

an uplink transmission handling circuit that performs an uplink transmission according to a selected TCI state of the plurality of TCI states or according to the selected TCI state and a selected power control setting of the plurality of power control settings, wherein the selected TCI state corresponds to the TCI state identification of the second higher layer configuration and the selected power control setting corresponds to the power control setting identification of the second higher layer configuration.