Multi-timing advance physical random access channel power control

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a physical downlink control channel command (PDCCH) from a plurality of transmit receive points (TRPs) associated with a serving cell, the physical downlink control channel command (PDCCH) including an indicator value indicating transmit parameters for random access, the transmit parameters including a power control parameter and a downlink reference timing parameter. The UE may transmit a random access message to the target TRP based on the one or more transmission parameters. The target TPR may be a first TRP or a second TRP of the plurality of TRPs. In some examples, a UE may receive a control message indicating that a transmit power of a random access message by the UE is based on one of a synchronization signal block (SSB) or a transmit configuration indicator (TCI) state indicated by a PDCCH command when two or more timing advance groups (TAGs) are configured.

Description

Technical Field

[0001] The following discussion relates to wireless communications, including physical random access channel (PRACH) power control in the presence of multiple timing advance (TA) values. Background Technology

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (such as Long Term Evolution (LTE) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each supporting wireless communication of communication devices, which may be referred to as User Equipment (UE). Summary of the Invention

[0003] The described technology relates to improved methods, systems, devices, and apparatuses for supporting physical random access channel (PRACH) power control in the presence of multiple timing advance (TA) values. For example, the described technology provides a physical downlink control channel (PDCCH) command to include indicator values ​​to indicate to the user equipment (UE) one or more power control parameters and downlink reference timing associated with the PRACH. The power control parameters and downlink reference timing can be based on whether the target transmit / receive point (TRP) of the PRACH is the same TRP from which the UE receives the PDCCH command or a different TRP. For example, in the case where two or more TA groups (TAGs) are configured for the serving cell, the target TRP can be the TRP of a TAG different from the TRP from which the PDCCH command is transmitted, and the UE can receive indications of transmission parameters to be used for transmitting random access messages based on the target TRP.

[0004] A method for wireless communication by a UE is described. The method may include receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including an indicator value indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters; and sending a random access message to a target TRP based on the one or more transmission parameters, the target TRP being either the first TRP or a second TRP in the set of multiple TRPs.

[0005] A UE for wireless communication is described. The UE may include: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories. The one or more processors may be able to operate individually or collectively to execute code that causes the UE to receive a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including indicator values ​​indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters; and to send a random access message to a target TRP based on the one or more transmission parameters, the target TRP being either the first TRP or a second TRP in the set of multiple TRPs.

[0006] Another UE for wireless communication is described. The UE may include components for receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including an indicator value indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters; and components for sending a random access message to a target TRP based on the one or more transmission parameters, the target TRP being either the first TRP or a second TRP in the set of multiple TRPs.

[0007] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: receive a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including indicator values ​​indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters; and send a random access message to a target TRP based on the one or more transmission parameters, the target TRP being either the first TRP or a second TRP in the set of multiple TRPs.

[0008] The methods described herein, examples of UEs, and nontransitory computer-readable media may also include operations, features, components, or instructions for: receiving a first configuration indicating two or more TAGs on a serving cell; and receiving a second configuration indicating two or more control resource set (CORESET) pool index values ​​associated with the serving cell, wherein a first TRP may be associated with a first CORESET pool index value among the two or more CORESET pool index values, and a second TRP may be associated with a second CORESET pool index value among the two or more CORESET pool index values.

[0009] In the methods described herein, and in some examples of UEs and non-transitory computer-readable media, the indicator value comprises a single bit.

[0010] In the methods described herein, and in some examples of UEs and non-transitory computer-readable media, indicator values ​​can indicate path loss reference signals used by the UE to determine power control parameters.

[0011] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, receiving a PDCCH command may include operations, features, components, or instructions for receiving indications of a first Transmit Configuration Indicator (TCI) state corresponding to a first CORESET pool index value and a second TCI state corresponding to a second CORESET pool index value, wherein the indicator value as a first value indicates that a path loss reference signal can be based on a first downlink reference signal of the first TCI state, and the indicator value as a second value indicates that a path loss reference signal can be based on a second downlink reference signal of the second TCI state.

[0012] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, receiving a PDCCH command from a first TRP may include operations, features, components, or instructions for receiving the PDCCH command via a CORESET associated with a first CORESET pool index value corresponding to a first TCI state, wherein an indicator value as a first value indicates that the path loss reference signal may be based on a first downlink reference signal quasi-co-located with the demodulation reference signal of the PDCCH command, and an indicator value as a second value indicates that the path loss reference signal may be based on a second downlink reference signal.

[0013] In the methods described herein, and in some examples of UEs and nontransitory computer-readable media, the second TCI state corresponding to the second CORESET pool index value includes a second downlink reference signal.

[0014] The methods described herein, some examples of UEs and non-transitory computer-readable media may also include operations, features, components or instructions for receiving control messages that indicate that a second downlink reference signal may be associated with a second TCI state corresponding to a second CORESET pool index value or may be associated with a synchronization signal block (SSB) indicated by a PDCCH command.

[0015] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, an indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference timing associated with a first CORESET pool index value, and an indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second downlink reference timing associated with a second CORESET pool index value.

[0016] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, an indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference signal timing associated with a first CORESET pool index value that is the same as the CORESET pool index value of the PDCCH command, and an indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second CORESET pool index value that is different from the CORESET pool index value of the PDCCH command.

[0017] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, the first TRP corresponds to a first TAG configured for the serving cell, and the second TRP corresponds to a second TAG configured for the serving cell, and the indicator value included in the PDCCH command can be configured for the serving cell including the first TAG and the second TAG based on at least two TAGs.

[0018] The methods described herein, some examples of UEs and non-transitory computer-readable media may also include operations, features, components or instructions for receiving control messages that indicate the inclusion of indicator values ​​in PDCCH commands.

[0019] A method for wireless communication by a UE is described. The method may include receiving a control message indicating that, when two or more TAGs are configured, the transmission power of a random access message performed by the UE is based on either an SSB state indicated by a PDCCH command or a TCI state indicated by a PDCCH command; receiving a PDCCH command from a first TRP in a set of multiple TRPs; and transmitting a random access message using the random access transmission power according to the control message, wherein the random access message is sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0020] A UE for wireless communication is described. The UE may include: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories. The one or more processors may be able to operate individually or jointly to execute code to enable the UE to receive a control message indicating, when two or more TAGs are configured, the transmission power of a random access message performed by the UE is based on either an SSB state indicated by a PDCCH command or a TCI state indicated by a PDCCH command; receive a PDCCH command from a first TRP in a set of multiple TRPs; and transmit a random access message using the random access transmission power according to the control message, wherein the random access message is sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0021] Another UE for wireless communication is described. This UE may include components for receiving a control message indicating that, when two or more TAGs are configured, the transmission power of a random access message performed by the UE is based on either an SSB state indicated by a PDCCH command or a TCI state indicated by a PDCCH command; components for receiving a PDCCH command from a first TRP in a set of multiple TRPs; and components for transmitting a random access message using the random access transmission power according to the control message, wherein the random access message is sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0022] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: receive a control message indicating that, when two or more TAGs are configured, the transmission power of a random access message performed by the UE is based on either an SSB state indicated by a PDCCH command or a TCI state indicated by a PDCCH command; receive a PDCCH command from a first TRP in a set of multiple TRPs; and transmit a random access message using the random access transmission power according to the control message, wherein the random access message is sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0023] The methods described herein, examples of UEs, and nontransitory computer-readable media may also include operations, features, components, or instructions for receiving configurations for two or more CORESET pool index values ​​for a serving cell, wherein a first TRP may be associated with a first CORESET pool index value and a second TRP may be associated with a second CORESET pool index value.

[0024] The methods described herein, examples of UEs, and nontransitory computer-readable media may also include operations, features, components, or instructions for receiving configurations for one or more physical cell identifiers for a serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding CORESET pool index value based on the TCI state.

[0025] In the methods described herein, and in some examples of UEs and non-transitory computer-readable media, control messages indicate that the path loss reference signal used by the UE to determine the random access transmit power can be based on either the SSB or TCI state.

[0026] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, receiving a PDCCH command from a first TRP may include operations, features, components, or instructions for receiving the PDCCH command via a CORESET associated with a CORESET pool index value corresponding to the first TRP, wherein the CORESET pool index value may indicate a TCI state.

[0027] The methods described herein, some examples of UEs and non-transitory computer-readable media may also include operations, features, components or instructions for sending capability messages that indicate the UE's support for cross-TRP PDCCH commands.

[0028] In some examples of the methods, UEs, and non-transitory computer-readable media described herein, the control message indicating the transmission power of random access messages performed by the UE may be based on the TCI state, and the PDCCH command includes an indicator value that may indicate a path loss reference signal used by the UE to determine the random access transmission power.

[0029] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, an indicator value as a first value indicates that the path loss reference signal can be based on a first downlink reference signal of a TCI state corresponding to a first CORESET pool index value, and an indicator value as a second value indicates that the path loss reference signal can be based on a second downlink reference signal of a second TCI state corresponding to a second CORESET pool index value.

[0030] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, the control message indicating the transmission power of a random access message performed by the UE may be based on the SSB, and receiving a PDCCH command may include operations, features, components, or instructions for receiving an indication of the SSB, wherein the random access transmission power may be based on the SSB.

[0031] The methods described herein, examples of UEs, and non-transitory computer-readable media may also include operations, features, components, or instructions for transmitting a capability message that instructs the UE to use the SSB to determine the capability of random access transmit power, the UE to use the TCI state to determine the capability of random access transmit power, or both. Attached Figure Description

[0032] Figure 1 Examples of wireless communication systems supporting physical random access channel (PRACH) power control in the presence of multiple timing advance (TA) values, according to one or more aspects of this disclosure, are shown.

[0033] Figure 2 An example of a wireless communication system supporting PRACH power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown.

[0034] Figure 3 An example of a process flow for PRACH power control in the presence of multiple TA values, supported by one or more aspects of this disclosure, is shown.

[0035] Figure 4 An example of a process flow for PRACH power control in the presence of multiple TA values, supported by one or more aspects of this disclosure, is shown.

[0036] Figure 5 An example of a process flow for PRACH power control in the presence of multiple TA values, supported by one or more aspects of this disclosure, is shown.

[0037] Figure 6 and Figure 7 A block diagram of a device supporting PRACH power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown.

[0038] Figure 8 A block diagram of a communication manager supporting PRACH power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown.

[0039] Figure 9A diagram is shown of a system including a device that supports PRACH power control in the presence of multiple TA values, according to one or more aspects of this disclosure.

[0040] Figures 10 to 14 A flowchart illustrating a method for supporting multi-TA PRACH power control according to one or more aspects of this disclosure is shown. Detailed Implementation

[0041] In some wireless communication systems, User Equipment (UE) can receive Physical Downlink Control Channel (PDCCH) commands, which trigger random access procedures with Transmitter / Receiver Points (TRPs) via Physical Random Access Channel (PRACH). For intra-cell multiple TRP (mTRP) operation configured using multiple timing advance (TA) groups (TAGs), a PDCCH command sent by the first TRP can trigger a random access procedure between the UE and the first TRP, or the PDCCH command can trigger a random access procedure between the UE and the second TRP (e.g., TRPs with different TAGs). In the latter case, the UE may not be aware that the random access procedure applies to the second TRP until after the UE receives the random access message. For example, a Random Access Response (RAR) from the second TRP can indicate that the random access procedure applies to communication with the second TRP. Therefore, the UE may send a random access message without knowing that the target TRP of the random access message is the second TRP, and the transmission of the random access message may suffer from inefficiency or power loss due to a lack of awareness.

[0042] In some examples, a TRP can send a PDCCH command that instructs the UE on one or more transmission parameters for a random access message. These parameters may include PRACH power control parameters or PRACH reference timing. The transmission parameters can be based on whether the target TRP is the same as or a different TRP from which the PDCCH command was sent. For example, a first TRP can send a PDCCH command to the UE, and the PDCCH command may include a 1-bit indicator value to indicate that the path loss reference signal or PRACH reference signal timing for PRACH power control will be based on the Transmission Configuration Indicator (TCI) state of the first TRP (if the random access procedure applies to the first TRP), or on the TCI state of a second TRP (if the random access procedure applies to a different TRP than the first TRP). When multiple TAGs are configured, the UE can receive an indication of whether PRACH power control will be based on either the first or second TCI state, or whether PRACH power control will be based on the configuration of the Synchronization Signal Block (SSB) indicated by the PDCCH command (e.g., RRC configuration).

[0043] The aspects of this disclosure are first described in the context of a wireless communication system. The aspects of this disclosure are further described in the context of a process flow. The aspects of this disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to multi-TA PRACH power control.

[0044] Figure 1 An example of a wireless communication system 100 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0045] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices employing different forms or having different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, among other designations. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0046] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0047] As described herein, nodes of the wireless communication system 100 (which may be referred to as network nodes or wireless nodes) may be network entity 105 (e.g., any network entity described herein), UE 115 (e.g., any UE described herein), network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. Alternatively, a node may be network entity 105. Furthermore, a first node may be configured to communicate with a second or third node. In one aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0048] In some examples, network entity 105 may communicate with core network 130, communicate with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entities 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entities 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with core network 130 via communication link 155.

[0049] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home evolution node B, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0050] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC, a non-real-time RIC), a service management and orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or TRP. One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0051] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). CU 160 can connect to one or more DU 165 or RU 170, and one or more DU 165 or RU 170 can host lower protocol layers, such as Layer 1 (L1) (e.g., Physical (PHY) layer) or L2 (e.g., Radio Link Control (RLC) layer, Medium Access Control (MAC) layer) functionality and signaling, and each can be at least partially controlled by CU 160. Alternatively or additionally, a protocol stack functional split can be employed between DU 165 and RU 170, such that DU 165 can support one or more layers of the protocol stack, and RU 170 can support one or more different layers of the protocol stack. DU 165 can support one or more different cells (e.g., via one or more RU 170). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165 via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170 via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 communicating via such communication links.

[0052] In some wireless communication systems (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0053] In the context of applying the techniques described herein to a decomposed RAN architecture, one or more components of the decomposed RAN architecture can be configured to support physical random access channel power control in the presence of multiple TA values, as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0054] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0055] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0056] UE 115 and network entity 105 can wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" can refer to a set of RF spectrum resources having a physical layer structure defined for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the RF spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 may be configured using multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN’s network entity 105 (e.g., base station 140, CU160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0057] A carrier may be associated with a specific bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one bandwidth in a set of bandwidths for a particular radio access technology (e.g., 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., network entity 105, UE 115, or both) may have hardware configurations that support communication using a specific carrier bandwidth, or may be configured to support communication using one of the carrier bandwidths in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include network entity 105 or UE 115 that supports concurrent communication using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., subband, BWP) or all of the carrier bandwidth.

[0058] The signal waveform transmitted via a carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0059] It can support one or more sets of parameters for a carrier, and the set of parameters may include subcarrier spacing ( (and cyclic prefix). A carrier can be divided into one or more BWPs with the same or different sets of parameters. In some examples, multiple BWPs can be used to configure UE 115. In some examples, a single BWP of a carrier can be active at a given time, and the communication of UE 115 can be constrained to one or more active BWPs.

[0060] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which It can represent the supported subcarrier spacing, and This can represent the supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0061] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0062] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0063] Depending on the technology, carriers can be used to multiplex physical channels for communication. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region (e.g., control resource set (CORESET)) of the physical control channel can be defined by a set of symbol periods and can extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search for control regions to obtain control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0064] Network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used (e.g., using a carrier) to communicate with network entity 105 and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or other identifier). In some examples, a cell may also refer to a coverage area 110 or a portion of coverage area 110 (e.g., a sector) in which a logical communication entity operates. Depending on various factors such as the capabilities of network entity 105, the range of such cells may be from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell may be a building, a subset of buildings, or external space between or overlapping coverage areas 110, or may include buildings, subsets of buildings, or external space between or overlapping coverage areas.

[0065] Macro cells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access to UE 115 that has a service subscription with a network provider supporting the macro cell. In contrast, small cells may be associated with a lower-power network entity 105 (e.g., a lower-power base station 140) and may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UE 115 that has a service subscription with a network provider, or restricted access to UE 115 associated with a small cell (e.g., UE 115 in a Closed Subscriber Group (CSG), or UE 115 associated with a user in a home or office). Network entity 105 may support one or more cells and may also use one or more component carriers to support communication via one or more cells.

[0066] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0067] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0068] Wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private or group communication and may be supported by one or more services, such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general business applications. The terms “ultra-reliable,” “low-latency,” and “ultra-reliable low-latency” are used interchangeably herein.

[0069] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled by network entity 105). In some examples, one or more UE 115s in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0070] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by network entity 105 (e.g., base station 140) associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0071] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the area from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) band or decimeter band because the wavelength range is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer waves in the High Frequency (HF) or Very High Frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0072] Wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating with unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed frequency bands may be combined with component carriers operating with licensed frequency bands based on carrier aggregation configurations (e.g., LAA). Operation using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0073] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0074] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating along a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0075] Network entity 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, network entity 105 (e.g., base station 140, RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by network entity 105 along different directions. For example, network entity 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmission along different beam directions may be used to identify (e.g., by a transmitting device (such as network entity 105) or by a receiving device (such as UE 115)) the beam direction for later transmission or reception by network entity 105.

[0076] Some signals (such as data signals associated with a specific receiving device) may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., the direction associated with the receiving device (such as receiving network entity 105 or receiving UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted along one or more beam directions. For example, UE 115 may receive one or more signals transmitted by network entity 105 along different directions and may report to network entity 105 an indication of signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0077] In some examples, transmissions performed by a device (e.g., network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital pre-decoding or beamforming to generate a combined beam for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating pre-decoding weights for one or more beam directions, and this feedback may correspond to a set of beams configured across the system bandwidth or one or more sub-bands. Network entity 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be pre-decoded. UE 115 may provide feedback for beam selection, which may be a pre-decoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel codebook, linear combination codebook, port selection codebook). Although these techniques are described with reference to signals transmitted by network entity 105 (e.g., base station 140, RU 170) along one or more directions, UE 115 may use similar techniques to transmit signals multiple times along different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception), or to transmit signals along a single direction (e.g., to transmit data to a receiving device).

[0078] A receiving device (e.g., UE 115) may perform reception operations according to multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a transmitting device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple reception directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of reception beamforming weights (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of the antenna array; or processing the received signal according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array. Any of these operations may be referred to as “listening” according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when a data signal is received). A single receiver configuration can be aligned along a beam direction determined based on listening according to different receiver configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0079] In some examples, PRACH transmission from UE 115 may be in response to a PDCCH command triggered by UE 115 (e.g., from network entity 105) that initiates a contention-free random access procedure, and depends on the demodulation reference signal of the PDCCH command and its quasi-co-located downlink reference signal. referenceSignalPower It can be by ss-PBCH-BlockPower Provided, or if the UE is configured for periodic CSI-RS reception resources or PRACH transmission associated with the link recovery process, where the corresponding index qnew Associated with a periodic CSI-RS configuration, referenceSignalPower It can be by ss- PBCH-BlockPower and powerControlOffsetSS Obtain, among which powerControlOffsetSS Provides the offset of CSI-RS transmit power relative to SSB transmit power or Physical Broadcast Channel (PBCH) block transmit power. If powerControlOffsetSS If not provided to the UE, the UE can assume a 0dB offset. If the active TCI state of the PDCCH providing the PDCCH command includes two reference signals, the UE expects to utilize the signal set to "Type D". qcl-Type To configure a reference signal, and the UE applies the signal by... powerControlOffsetSS Use this reference signal when providing the value.

[0080] In some examples, UE 115 may receive a PDCCH command from one of a plurality of TRPs associated with a serving cell (e.g., mTRP operation). The PDCCH command includes an indicator value indicating one or more transmission parameters for random access, including power control parameters and downlink reference timing parameters. The UE may send a random access message to a target TRP based on these one or more transmission parameters. The target TRP may be a first or a second of the plurality of TRPs. In some examples, the UE may receive a control message indicating that, when two or more TAGs are configured, the transmission power of the random access message performed by the UE is based on either the SSB indicated by the PDCCH command or the TCI state indicated by the PDCCH command. UE 115 may receive the PDCCH command from a first of the plurality of TRPs. UE 115 may use the random access transmission power based on the control message to send the random access message. UE 115 may send a random access message to a target TRP, which may be a first or a second of the plurality of TRPs.

[0081] Figure 2An example of a wireless communication system 200 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. The wireless communication system 200 may implement aspects of the wireless communication system 100, or may be implemented through aspects of the wireless communication system 100. For example, the wireless communication system 200 may include UE 115-a, which may be as referenced... Figure 1 The example of UE 115 described herein may include TRP 205-a and TRP205-b, which may be as referenced. Figure 1 The components of the network entity 105 described. TRP 205-a and TRP 205-b may be associated with the serving cell 210 of the network entity.

[0082] UE 115-a may receive PDCCH command 215 that triggers a random access procedure with TRP 205 of serving cell 210. In some examples, serving cell 210 may be configured for multiple TRP operations based on intra-cell multiple downlink control information (DCI). Serving cell 210 may be configured for contention-based random access. UE 115-a may receive a first configuration indicating two or more CORESET pool index values ​​associated with serving cell 210. That is, TRP 205-a may correspond to a first CORESET pool index value, and TRP 205-b may correspond to a second CORESET pool index value. The CORESET pool index value may be an identifier of the corresponding TRP. In some cases, serving cell 210 may be configured using two or more TA groups. TRP 205-a and TRP 205-b may belong to the same TA group or different TA groups. UE 115-a may receive a second configuration indicating two or more TA groups.

[0083] TRP 205-a can send PDCCH command 215 to UE 115-a, and PDCCH command 215 can trigger a random access procedure between UE 115-a and TRP 205-a or between UE 115-a and TRP 205-b. Referring to the communication between UE 115-a and serving cell 210, TRP 205-a can be the active TRP 205-a. UE 115-a can send random access message 225 to serving cell 210 via PRACH (e.g., to TRP 205-a, to TRP 205-b). In some cases, UE 115-a can send random access message 225 with a transmit power (e.g., PRACH power control) based on the downlink reference signal transmission power of the TCI state associated with active TRP 205-a. For example, if the target TRP 205 for the random access message 225 is TRP 205-b, UE 115-a can transmit the random access message 225 with power based on the TCI state associated with TRP 205-b. The PDCCH command 215 from TRP 205-a can instruct PRACH power control to be performed using the TCI state corresponding to the first CORESET pool index value (e.g., which corresponds to TRP 205-a), and the path loss reference signal used for PRACH power control (e.g., for transmitting the random access message 225) can be based on the TCI state. In some examples, the path loss reference signal used for PRACH power control can be based on the demodulation reference signal of the PDCCH command 215 and its quasi-co-located downlink reference.

[0084] To indicate which TRP 205 the random access procedure applies to, TRP 205-b can send RAR 230 to UE 115-a to indicate the TAG identifier corresponding to the TAG to which the target TRP 205-b belongs. RAR 230 can be in response to random access message 225. This indication can be a single bit and can be included in the TA command of RAR 230. For example, RAR 230 can include a 1-bit value to indicate that the TRP 205-b sending RAR 230 belongs to a first TAG identified by a first TAG ID. Alternatively, TRP 205-a can send a RAR indicating that TRP 205-a belongs to a second TAG identified by a second TAG ID. However, because RAR 230 is received by the UE after UE 115-a sends random access message 225, UE 115-a may not know which TRP 205 is the target TRP of the random access message 225 sent by UE 115-a. Therefore, UE 115-a can send random access message 225 without calibration of the PRACH power control parameters or downlink reference signal timing parameters applicable to target TRP 205-b.

[0085] According to the examples described herein, when multiple TAs (e.g., TA groups) are configured for serving cell 210, serving cell 210 (e.g., network entity 105) may introduce an indicator value (e.g., a 1-bit indicator) in the PDCCH command 215 for intra-cell mTRP. The indicator value may be a bit in a reserved field of the PDCCH command 215, or it may be included in a new field of the PDCCH command 215, or it may be otherwise conveyed via other signaling. The indicator value may indicate the path loss reference signal used by UE 115-a to determine the PRACH power control for random access message 225. Additionally or alternatively, the indicator value may indicate the downlink reference timing that UE 115-a can use to transmit random access message 225.

[0086] In some examples, including an indicator value in the PDCCH command 215 may be based on the number of TAGs configured on the serving cell 210 via which the PDCCH command 215 is sent. In some cases, where two or more TAGs are configured on the serving cell 210, the PDCCH command may include an indicator value. In other cases, the PDCCH command may not include an indicator value. In such cases, the path loss reference signal for PRACH power control at UE 115-a may be based on the demodulation reference signal of the PDCCH command 215 and its quasi-co-located downlink reference signal. Therefore, the path loss reference signal for PRACH power control when the PDCCH command 215 does not include an indicator value may be the same as the path loss reference signal for PRACH power control when the serving cell 210 is configured using a single TA (e.g., a single TAG).

[0087] In some examples, serving cell 210 (e.g., TRP 205-a) may send control message 220 to UE 115-a. Control message 220 may be an RRC message. When two TAGs are configured for serving cell 210, control message 220 may indicate whether the PRACH power control for random access message 225 (e.g., the path loss reference signal for PRACH power control at UE 115-a) is based on the SSB indicated by PDCCH command 215 or the TCI state indicated by PDCCH command 215. Control message 220 may indicate the path loss reference signal for inter-cell mTRPs (e.g., TRP 205 with different physical cell identifiers) or intra-cell mTRPs (e.g., TRP 205-a and TRP 205-b of the same serving cell 210). When control message 220 indicates that the SSB should be used to determine the path loss reference signal for PRACH power control at UE 115-a, the PDCCH command may not include an indicator value.

[0088] Figure 3 An example of a process flow 300 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Process flow 300 may be implemented by or by aspects of wireless communication system 100 and wireless communication system 200. For example, process flow 300 may include UE 115-b, which may be as referenced... Figure 1 and Figure 2 The example of UE 115 described herein, and the process flow may include TRP 305-a and TRP305-b, which may be as referenced Figure 1 The components of network entity 105 described. TRP 305-a and TRP 305-b can be associated with the same serving cell.

[0089] In the following description of process flow 300, operations between UE 115-b, TRP 305-a, and TRP 305-b may be sent in a different order than the example order shown, or operations performed by UE 115-b, TRP 305-a, and TRP 305-b may be performed in a different order or at different times. Some operations may also be omitted from process flow 300, and other operations may be added to process flow 300.

[0090] At 310, UE 115-b may receive a first configuration indicating two or more TAGs on the serving cell. Each of the two or more TAGs may correspond to a TAG identifier. TRP 305-a may correspond to the first TAG among the two or more TAGs, and TRP 305-b may correspond to the second TAG among the two or more TAGs. Each of the two or more TAGs may correspond to a TA value used for TRP communication with the corresponding TAG.

[0091] At 315, UE 115-b may receive a second configuration indicating two or more CORESET pool index values ​​associated with the serving cell. TRP 305-a may correspond to a first CORESET pool index value (e.g., CORESETPoolIndex 0), and TRP 305-b may correspond to a second CORESET pool index value (e.g., CORESETPoolIndex 1). TRP 305-a may use the CORESET pool index values ​​to identify different TRPs of the serving cell (e.g., TRP 305-b). The CORESET pool index values ​​may indicate a resource set (e.g., CORESET), through which UE 115-b may receive messages (e.g., control messages, PDCCH commands) from the TRP. In some examples, the CORESET pool index value may correspond to or indicate the TCI state of the corresponding TRP 305 indicated by the CORESET pool index value.

[0092] At 320, UE 115-b can receive control messages (e.g., RRC messages) that indicate the inclusion of indicator values ​​in PDCCH commands. The indicator values ​​may indicate one or more transmission parameters of a random access message scheduled or triggered by a PDCCH command. One or more transmission parameters may include power control parameters (e.g., PRACH power control parameters, path loss reference signals for PRACH power control) or downlink reference timing parameters.

[0093] At 325, UE 115-b may receive a PDCCH command including an indicator value from TRP 305-a. The indicator value may be a first value (e.g., 0). The indicator value may be a single bit. The indicator value may reuse bits from a reserved field of the PDCCH command, or the PDCCH command may include a new field containing the indicator value. In some cases, the indicator value indicates a path loss reference signal used by UE 115-b to determine power control parameters (e.g., transmit power of random access messages or PRACH). In some cases, the PDCCH command may include an indication of a first TCI state using a first CORESERT pool index value (e.g., the CORESETPoolIndex of the TRP 305-a that sent the PDCCH command), and the indicator value may be a first value (e.g., 0) to indicate a downlink reference signal for the path loss reference signal based on the first TCI state. In some cases, UE 115-b can receive PDCCH commands from TRP 305-a via a CORESET corresponding to a first CORESET pool index value (e.g., CORESETPoolIndex 0). The indicator value, which is the first value (e.g., 0), can indicate the path loss reference signal based on the downlink reference signal quasi-co-located with the demodulation reference signal of the PDCCH command.

[0094] The indicator value can indicate the downlink reference timing of the random access message or the downlink reference timing parameter used by UE 115-b to determine the downlink reference timing of the PRACH. An indicator value as a first value (e.g., 0) can indicate that the downlink reference timing parameter corresponds to the downlink reference timing of a first CORESET pool index value (e.g., CORESETPoolIndex 0, a specific CORESETPoolIndex value), or it can indicate that the downlink reference timing corresponds to the same CORESET pool index value as the CORESET pool index value of the PDCCH command.

[0095] At 330, UE 115-b can determine the path loss reference signal used for power control of the random access message, or it can determine another path loss control parameter. Based on the path loss reference signal or other power control parameters, UE 115-b can increase or decrease the transmission power of the random access message, or it can otherwise fine-tune or calibrate the transmission power of the random access message based on the target TRP of the random access message being TRP 305-a. At 335, UE 115-b can determine the downlink reference timing of the random access message, or it can determine another downlink reference timing parameter of the random access message. Based on the downlink reference timing or other downlink reference timing parameters, UE 115-b can determine the transmission timing of the random access message based on the target TRP of the random access message being TRP 305-a.

[0096] At position 340, UE 115-b can send a random access message to TRP 305-a, which can be the target TRP for random access. UE 115-b can send the random access message based on one or more transmission parameters. For example, UE 115-b can send the random access message based on the target TRP for random access being TRP 305-a or based on the transmission power or downlink reference timing of the target TRP for random access being the same TRP through which UE 115-b receives PDCCH commands.

[0097] Figure 4 An example of a process flow 400 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Process flow 400 may be implemented by or by aspects of wireless communication system 100 and wireless communication system 200. For example, process flow 400 may include UE 115-c, which may be as referenced... Figure 1 and Figure 2 The example of UE 115 described herein, and the process flow may include TRP 405-a and TRP405-b, which may be as described in the reference. Figure 1 The components of network entity 105 described. TRP 405-a and TRP 405-b can be associated with the same serving cell.

[0098] In the following description of process flow 400, operations between UE 115-c, TRP 405-a, and TRP 405-b may be sent in a different order than the example order shown, or operations performed by UE 115-c, TRP 405-a, and TRP 405-b may be performed in a different order or at different times. Some operations may also be omitted from process flow 400, and other operations may be added to process flow 400.

[0099] At 410, UE 115-c may receive a first configuration indicating two or more TAGs on the serving cell. Each of the two or more TAGs may correspond to a TAG identifier. TRP 405-a may correspond to the first TAG among the two or more TAGs, and TRP 405-b may correspond to the second TAG among the two or more TAGs. Each of the two or more TAGs may correspond to a TA value used for communication with the TRP of the corresponding TAG.

[0100] At 415, UE 115-c may receive a second configuration indicating two or more CORESET pool index values ​​associated with the serving cell. TRP 405-a may correspond to a first CORESET pool index value (e.g., CORESETPoolIndex 0), and TRP 405-b may correspond to a second CORESET pool index value (e.g., CORESETPoolIndex 1). TRP 405-a may use the CORESET pool index values ​​to identify different TRPs of the serving cell (e.g., TRP 405-b). The CORESET pool index values ​​may indicate a resource set (e.g., CORESET), through which UE 115-c may receive messages (e.g., control messages, PDCCH commands) from the TRP. In some examples, the CORESET pool index value may correspond to or indicate the TCI state of the corresponding TRP 305 indicated by the CORESET pool index value.

[0101] At 420, UE 115-c can receive control messages (e.g., RRC messages). In the case of cross-TRP PDCCH commands (e.g., PDCCH commands configuring a random access procedure between UE 115-c and TRP 405-b), the control message can indicate whether the path loss reference signal used for PRACH power control is based on the TCI state of a TRP 405-b-specific CORESET pool index value (e.g., CORESETPoolIndex1) or on the SSB indicated by the PDCCH command. For example, TRP 405-a can send a PDCCH command that can trigger a random access procedure between UE 115-c and TRP 405-b, and the control message can indicate the path loss reference signal for UE 115-c to use for PRACH power control. In some cases, UE 115-c can receive control messages (e.g., RRC messages) that indicate the inclusion of indicator values ​​in PDCCH commands, where the indicator values ​​indicate one or more transmission parameters of a random access message scheduled or triggered by a PDCCH command.

[0102] At 425, UE 115-c may receive a PDCCH command including an indicator value from TRP 405-a. The indicator value may be a second value (e.g., 1). The indicator value may be a single bit. The indicator value may reuse bits from a reserved field of the PDCCH command, or the PDCCH command may include a new field containing the indicator value. In some cases, the indicator value indicates a path loss reference signal used by UE 115-c to determine power control parameters (e.g., transmit power of random access messages or PRACH). In some cases, the PDCCH command may include an indication of a second TCI state using a second CORESERT pool index value (e.g., CORESETPoolIndex of TRP 405-b, which is different from the PDCCH command sender), and the indicator value may be a second value (e.g., 1) to indicate a downlink reference signal for the path loss reference signal based on the second TCI state. In some cases, UE 115-c can receive PDCCH commands from TRP 405-a via a CORESET corresponding to a first CORESET pool index value (e.g., CORESETPoolIndex 0). In some examples, an indicator value as a second value (e.g., 1) can indicate that the path loss reference signal is based on a downlink reference signal with a TCI state corresponding to a CORESET pool index value different from the first CORESET pool index value (e.g., CORESETPoolIndex 1). Alternatively, an indicator value as a second value can indicate that the path loss reference signal is based on an SSB indicated by the PDCCH command. Whether the path loss reference signal is based on a TCI state corresponding to a different CORESET pool index value or on the indicated SSB can be configured by RRC.

[0103] The indicator value can indicate the downlink reference timing of the random access message or the downlink reference timing parameter used by UE 115-c to determine the downlink reference timing of the PRACH. An indicator value as a second value (e.g., 1) can indicate that the downlink reference timing parameter corresponds to a second CORESET pool index value (e.g., CORESETPoolIndex 1, a specific CORESETPoolIndex value), or it can indicate that the downlink reference timing corresponds to a CORESET pool index value different from the CORESET pool index value of the PDCCH command.

[0104] At 430, UE 115-c can determine the path loss reference signal used for power control of the random access message, or it can determine another path loss control parameter. Based on the path loss reference signal or other power control parameters, UE 115-c can increase or decrease the transmission power of the random access message, or it can otherwise fine-tune or calibrate the transmission power of the random access message based on the target TRP of the random access message being TRP 405-b. At 435, UE 115-c can determine the downlink reference timing of the random access message, or it can determine another downlink reference timing parameter of the random access message. Based on the downlink reference timing or other downlink reference timing parameters, UE 115-c can determine the transmission timing of the random access message based on the target TRP of the random access message being TRP 405-b.

[0105] At 440, UE 115-c can send a random access message to TRP 405-b, which can be the target TRP for random access. UE 115-c can send the random access message based on one or more transmission parameters. For example, UE 115-c can send the random access message based on the transmission power or downlink reference timing of either the target TRP for random access being TRP 405-b or a different TRP than the one through which UE 115-c receives PDCCH commands.

[0106] Figure 5 An example of a process flow 500 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Process flow 500 may be implemented by or by aspects of wireless communication system 100 and wireless communication system 200. For example, process flow 500 may include UE 115-d, which may be as referenced... Figure 1 and Figure 2 The example of UE 115 described herein, and the process flow may include TRP 505-a and TRP505-b, which may be as described in the reference. Figure 1 The components of the network entity 105 described. TRP 505-a and TRP 505-b can be associated with the same serving cell.

[0107] In the following description of process flow 500, operations between UE 115-d, TRP 505-a, and TRP 505-b may be sent in a different order than the example order shown, or operations performed by UE 115-d, TRP 505-a, and TRP 505-b may be performed in a different order or at different times. Some operations may also be omitted from process flow 500, and other operations may be added to process flow 500.

[0108] At 510, UE 115-d may send a capability message indicating the UE's capability to determine the random access transmit power to be applied to a random access message using the SSB indicated by the PDCCH command, the UE's capability to determine the random access transmit power to be applied to a random access message using the TCI state indicated by the PDCCH command, or a combination thereof. In some examples, UE 115-d may indicate the capability to use the indicated TCI state without indicating the capability to use the indicated SSB, or vice versa. Alternatively, UE 115-d may indicate both the capability to perform PRACH power control using the indicated SSB and the capability to perform PRACH power control using the indicated TCI state. In some examples, UE 115-d may indicate the UE's capability to support PRC PDCCH commands across TRP commands. The capability message may include capability information based on the UE's ability to support the indicated SSB or the indicated TCI state across TRP PDCCH commands.

[0109] At 515, UE 115-d can receive configuration. In the case of intra-cell mTRP, the configuration can indicate two or more CORESET pool index values ​​for the serving cell. TRP 505-a can correspond to a first CORESET pool index value (e.g., CORESETPoolIndex 0), and TRP 505-b can correspond to a second CORESET pool index value (e.g., CORESETPoolIndex 1). In the case of inter-cell mTRP, the configuration can indicate one or more physical cell identifiers for the serving cell. Depending on the TCI state activated by a TCI activation command (e.g., MAC CE), each physical cell identifier can correspond to a corresponding CORESET pool index value.

[0110] At 520, UE 115-d can receive a control message indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either the SSB state indicated by the PDCCH command or the TCI state indicated by the PDCCH command. The control message may also indicate that the path loss reference signal used by UE 115-d to determine the random access transmission power is based on either the SSB state or the TCI state.

[0111] At 525, UE 115-d can receive PDCCH commands from TRP 505-a. The PDCCH commands may include indications of the TCI state or SSB that UE 115-d can use to determine the transmit power of random access messages. In some examples (e.g., if cross-TRP PDCCH commands are not supported for intra-cell mTRPs), UE 115-d may receive PDCCH commands via a CORESET associated with a CORESET pool index value (e.g., CORESETPoolIndex 0) corresponding to TRP 505-a. The CORESET pool index value may indicate (e.g., implicitly) the TCI state. In this case, if the control message instructs UE 115-d to use the TCI state, the path loss reference signal for PRACH power control may be determined based on the TCI state corresponding to the same CORESET pool index value (e.g., CORESETPoolIndex 0) as the PDCCH command. In some examples (e.g., if cross-TRP PDCCH commands are supported for intra-cell mTRP), the control message may instruct UE 115-d to use the TCI state, and the PDCCH command may include an indicator value (e.g., a reference value) indicating the path loss reference signal used by UE 115-d when determining random access transmit power. Figure 3 and Figure 4 (A more detailed description).

[0112] At 530, UE 115-d can determine a path loss reference signal for power control of random access messages, or it can determine another path loss control parameter. Based on the path loss reference signal or other power control parameters, UE 115-d can increase or decrease the transmission power of random access messages, or it can fine-tune or calibrate the transmission power of random access messages in other ways based on control messages.

[0113] At 535-a, UE 115-d can transmit a random access message using the random access transmit power according to the control message. UE 115-d can transmit the random access message to a target TRP, which is either TRP 505-a or TRP 505-b. For example, the target TRP can be TRP 505-a, and UE 115-d can transmit random access message 530-a to TRP 505-a. Alternatively, at 535-b, the target TRP can be TRP 505-b, and UE 115-d can transmit a random access message to TRP 505-b.

[0114] Figure 6 A block diagram 600 of a device 605 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Device 605 may be an example of various aspects of UE 115 as described herein. Device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. Device 605, or one or more components of device 605 (e.g., receiver 610, transmitter 615, and communication manager 620), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0115] Receiver 610 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to power control of multi-TA physical random access channels). The information may be passed to other components of device 605. Receiver 610 may utilize a single antenna or a collection of antennas.

[0116] Transmitter 615 may provide components for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to multi-TA physical random access channel power control). In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0117] The communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of physical random access channel power control in the presence of multiple TA values ​​as described herein. For example, the communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0118] In some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic component, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., executing instructions stored in at least one memory individually or collectively by one or more processors).

[0119] Alternatively or concurrently, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by any combination of a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or these or other programmable logic devices (e.g., configured as or otherwise individually or collectively to support components for performing the functions described in this disclosure).

[0120] In some examples, the communication manager 620 may be configured to use or otherwise cooperate with the receiver 610, the transmitter 615, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 620 may receive information from the receiver 610, transmit information to the transmitter 615, or be integrated with the receiver 610, the transmitter 615, or both to acquire information, output information, or perform various other operations as described herein.

[0121] The communication manager 620 may support wireless communication according to examples disclosed herein. For example, the communication manager 620 may be capable of, configured to, or operable to support components for receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including indicator values ​​indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters. The communication manager 620 may be capable of, configured to, or operable to support components for sending a random access message to a target TRP based on the one or more transmission parameters, the target TRP being one of a first TRP or a second TRP in a set of multiple TRPs.

[0122] Alternatively or additionally, the communication manager 620 may support wireless communication according to the examples disclosed herein. For example, the communication manager 620 may be capable of, configured to, or operable to support components for receiving control messages indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either an SSB indicated by a PDCCH command or a TCI state indicated by a PDCCH command. The communication manager 620 may be capable of, configured to, or operable to support components for receiving PDCCH commands from a first TRP in a set of multiple TRPs. The communication manager 620 may be capable of, configured to, or operable to support components for transmitting random access messages using random access transmission power based on control messages, wherein the random access messages are sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0123] By including or configuring a communication manager 620 according to an example as described herein, device 605 (e.g., controlling receiver 610, transmitter 615, communication manager 620, or a combination thereof, or at least one processor otherwise coupled to them) can support techniques for reducing power consumption and processing. For example, by receiving indications of transmission parameters to be used for random access messages, the UE can reduce errors or power loss in communication, which can reduce retransmissions or data loss that may result from random access messages being transmitted at low power or incorrect timing.

[0124] Figure 7A block diagram 700 of a device 705 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Device 705 may be an example of aspects of device 605 or UE 115 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. Device 705, or one or more components of device 705 (e.g., receiver 710, transmitter 715, and communication manager 720), may include at least one processor that can be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0125] Receiver 710 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to power control of multi-TA physical random access channels). The information may be passed to other components of device 705. Receiver 710 may utilize a single antenna or a collection of antennas.

[0126] Transmitter 715 may provide components for transmitting signals generated by other components of device 705. For example, transmitter 715 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to multi-TA physical random access channel power control). In some examples, transmitter 715 may be co-located with receiver 710 in a transceiver module. Transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0127] Device 705 or its various components may be examples of parts used to perform various aspects of physical random access channel power control in the presence of multiple TA values ​​as described herein. For example, communication manager 720 may include control PDCCH command component 725, RACH component 730, transmit power manager 735, PDCCH command manager 740, RACH manager 745, or any combination thereof. Communication manager 720 may be examples of aspects of communication manager 620 as described herein. In some examples, communication manager 720 or its various components may be configured to use or otherwise cooperate with receiver 710, transmitter 715, or both to perform various operations (e.g., receive, acquire, monitor, output, transmit). For example, communication manager 720 may receive information from receiver 710, transmit information to transmitter 715, or be integrated in combination with receiver 710, transmitter 715, or both to acquire information, output information, or perform various other operations as described herein.

[0128] The communication manager 720 can support wireless communication according to examples disclosed herein. The PDCCH command component 725 is capable of, configured to, or operable to support components for receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with the serving cell. This PDCCH command includes indicator values ​​indicating one or more transmission parameters for random access, including power control parameters or downlink reference timing parameters. The RACH component 730 is capable of, configured to, or operable to support components for sending a random access message to a target TRP based on the one or more transmission parameters. This target TRP is either a first TRP or a second TRP in a set of multiple TRPs.

[0129] Alternatively or additionally, the communication manager 720 may support wireless communication according to the examples disclosed herein. The transmit power manager 735 is capable of, configured to, or operable to support components for receiving control messages indicating that, when two or more TAGs are configured, the transmit power of random access messages performed by the UE is based on either the SSB indicated by a PDCCH command or the TCI state indicated by a PDCCH command. The PDCCH command manager 740 is capable of, configured to, or operable to support components for receiving PDCCH commands from a first TRP in a set of multiple TRPs. The RACH manager 745 is capable of, configured to, or operable to support components for transmitting random access messages using random access transmit power according to control messages, wherein the random access messages are sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0130] Figure 8A block diagram 800 of a communication manager 820 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. The communication manager 820 may be an example of aspects of the communication manager 620, communication manager 720, or both as described herein. The communication manager 820 or its various components may be examples of components for performing various aspects of physical random access channel power control with multiple TAs as described herein. For example, the communication manager 820 may include a PDCCH command component 825, a RACH component 830, a transmit power manager 835, a PDCCH command manager 840, a RACH manager 845, a TA component 850, a CORESET component 855, a CORESET manager 860, a cell identifier manager 865, a capability manager 870, an SSB manager 875, a control component 880, or any combination thereof. Each of these components, or its components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses).

[0131] The communication manager 820 may support wireless communication according to examples disclosed herein. The PDCCH command component 825 is capable of, configured to, or operable to support components for receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with the serving cell. This PDCCH command includes indicator values ​​indicating one or more transmission parameters for random access, including power control parameters or downlink reference timing parameters. The RACH component 830 is capable of, configured to, or operable to support components for sending a random access message to a target TRP based on the one or more transmission parameters. This target TRP is either a first TRP or a second TRP in a set of multiple TRPs.

[0132] In some examples, TA component 850 is capable of, configured to, or operable to support components for receiving a first configuration indicating two or more TAGs on the serving cell. In some examples, CORESET component 855 is capable of, configured to, or operable to support components for receiving a second configuration indicating two or more CORESET pool index values ​​associated with the serving cell, wherein a first TRP is associated with a first CORESET pool index value among the two or more CORESET pool index values, and a second TRP is associated with a second CORESET pool index value among the two or more CORESET pool index values.

[0133] In some examples, the indicator value consists of a single bit.

[0134] In some examples, the indicator value indicates the path loss reference signal used by the UE to determine power control parameters.

[0135] In some examples, to support receiving PDCCH commands, the PDCCH command component 825 is capable of, configured to, or operable to support components for receiving indications of a first TCI state corresponding to a first CORESET pool index value and a second TCI state corresponding to a second CORESET pool index value, wherein an indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the first TCI state, and an indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on the second TCI state.

[0136] In some examples, to support receiving PDCCH commands from a first TRP, the PDCCH command component 825 is capable of, configured to, or operable to support components for receiving PDCCH commands via a CORESET associated with a first CORESET pool index value corresponding to a first TCI state, wherein an indicator value as a first value indicates a path loss reference signal based on a first downlink reference signal quasi-co-located with the demodulation reference signal of the PDCCH command, and an indicator value as a second value indicates a path loss reference signal based on a second downlink reference signal.

[0137] In some examples, the second TCI state corresponding to the second CORESET pool index value includes a second downlink reference signal.

[0138] In some examples, control component 880 is capable of, configured to, or able to operate to support components for receiving control messages that indicate that a second downlink reference signal is associated with a second TCI state corresponding to a second CORESET pool index value or with an SSB indicated by a PDCCH command.

[0139] In some examples, the indicator value as the first value indicates that the downlink reference timing parameter corresponds to the first downlink reference timing associated with the first CORESET pool index value, and the indicator value as the second value indicates that the downlink reference timing parameter corresponds to the second downlink reference timing associated with the second CORESET pool index value.

[0140] In some examples, the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference signal timing associated with a first CORESET pool index value that is the same as the CORESET pool index value of the PDCCH command, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second CORESET pool index value that is different from the CORESET pool index value of the PDCCH command.

[0141] In some examples, the first TRP corresponds to a first TAG configured for serving the cell, and the second TRP corresponds to a second TAG configured for serving the cell. In some examples, the PDCCH command includes an indicator value based on at least two TAGs configured for serving the cell, including both the first and second TAGs.

[0142] In some examples, the PDCCH command component 825 is capable of, configured to, or able to operate to support a component for receiving control messages that indicate the inclusion of indicator values ​​in the PDCCH command.

[0143] Alternatively or additionally, the communication manager 820 may support wireless communication according to examples disclosed herein. The transmit power manager 835 is capable of, configured to, or operable to support components for receiving control messages indicating that, when two or more TAGs are configured, the transmit power of random access messages performed by the UE is based on either the SSB indicated by a PDCCH command or the TCI state indicated by a PDCCH command. The PDCCH command manager 840 is capable of, configured to, or operable to support components for receiving PDCCH commands from a first TRP in a set of multiple TRPs. The RACH manager 845 is capable of, configured to, or operable to support components for transmitting random access messages using random access transmit power according to control messages, wherein the random access messages are sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0144] In some examples, the CORESET manager 860 is capable of, configured to, or operable to support components for receiving configurations indicating two or more CORESET pool index values ​​for a serving cell, wherein a first TRP is associated with a first CORESET pool index value and a second TRP is associated with a second CORESET pool index value.

[0145] In some examples, the cell identifier manager 865 is capable of, configured to, or operable to support components for receiving configurations indicating one or more physical cell identifiers for a serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding CORESET pool index value based on the TCI state.

[0146] In some examples, the control message indicates that the path loss reference signal used by the UE to determine the random access transmit power is based on either the SSB or TCI state.

[0147] In some examples, in order to support receiving PDCCH commands from a first TRP, the PDCCH command manager 840 is capable of, configured to, or able to operate to support components for receiving PDCCH commands via a CORESET associated with a CORESET pool index value corresponding to the first TRP, wherein the CORESET pool index value indicates the TCI state.

[0148] In some examples, the capability manager 870 is capable of, configured to, or able to operate to support components for sending capability messages that indicate the UE's support for cross-TRP PDCCH commands.

[0149] In some examples, the control message indicates that the transmission power of random access messages performed by the UE is based on the TCI state. In some examples, the PDCCH command includes an indicator value that indicates the path loss reference signal used by the UE to determine the random access transmission power.

[0150] In some examples, the indicator value as the first value indicates the first downlink reference signal based on the TCI state corresponding to the first CORESET pool index value, and the indicator value as the second value indicates the second downlink reference signal based on the second TCI state corresponding to the second CORESET pool index value.

[0151] In some examples, the control message indicates that the transmission power of the random access message performed by the UE can be based on the SSB, and in order to support the reception of PDCCH commands, the SSB manager 875 can be, is configured, or is operable to support components for receiving indications to the SSB, wherein the random access transmission power is based on the SSB.

[0152] In some examples, the capability manager 870 is capable of, configured to, or able to operate to support components for sending capability messages that instruct the UE to use the SSB to determine the capability of random access transmit power, the UE to use the TCI state to determine the capability of random access transmit power, or both.

[0153] Figure 9 A diagram of a system 900 including device 905 supporting physical random access channel power control in the presence of multiple TA values, according to one or more aspects of this disclosure, is shown. Device 905 may be an example of device 605, device 705, or UE 115 as described herein, or may include components thereof. Device 905 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, at least one memory 930, code 935, and at least one processor 940. These components may communicate electronically or be otherwise coupled (e.g., operative ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 945).

[0154] I / O controller 910 manages the input and output signals of device 905. I / O controller 910 can also manage peripheral devices not integrated into device 905. In some cases, I / O controller 910 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 910 may utilize an operating system such as iOS. ® ANDROID ® MS-DOS ® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Alternatively, the I / O controller 910 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.

[0155] In some cases, device 905 may include a single antenna 925. However, in other cases, device 905 may have more than one antenna 925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 915 may communicate bidirectionally via one or more antennas 925 as described herein, or via a wired or wireless link. For example, transceiver 915 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 915 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 925 for transmission; and demodulating packets received from one or more antennas 925. Transceiver 915, or transceiver 915 and one or more antennas 925, may be an example of transmitter 615, transmitter 715, receiver 610, receiver 710, or any combination thereof or components thereof as described herein.

[0156] At least one memory 930 may include random access memory (RAM) and read-only memory (ROM). At least one memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed by at least one processor 940, cause device 905 to perform the various functions described herein. Code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 935 may not be directly executable by at least one processor 940, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 930 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0157] At least one processor 940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, at least one processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 940. At least one processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., at least one memory 930) to cause device 905 to perform various functions (e.g., functions or tasks supporting power control of multiple TA physical random access channels). For example, device 905 or components of device 905 may include at least one processor 940 and at least one memory 930 coupled to or coupled to at least one processor 940, wherein at least one processor 940 and at least one memory 930 are configured to perform the various functions described herein. In some examples, at least one processor 940 may include multiple processors, and at least one memory 930 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 940 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuitry (including, for example, one or both of processor circuitry (which may include at least one processor 940) and memory circuitry (which may include at least one memory 930)) or components that receive or receive input and process the input to produce, generate or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. Thus, at least one processor 940 or a processing system including at least one processor 940 may be configured, capable of being configured, or operable to cause device 905 to perform one or more of the functions described herein. Furthermore, as described herein, “configured to,” “capable of being configured,” and “operable to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 930 or otherwise.

[0158] The communication manager 920 may support wireless communication according to examples disclosed herein. For example, the communication manager 920 may be capable of, configured to, or operable to support components for receiving a PDCCH command from a first TRP in a set of multiple TRPs associated with a serving cell, the PDCCH command including indicator values ​​indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters. The communication manager 920 may be capable of, configured to, or operable to support components for sending a random access message to a target TRP based on the one or more transmission parameters, the target TRP being one of a first TRP or a second TRP in a set of multiple TRPs.

[0159] Alternatively or additionally, the communication manager 920 may support wireless communication according to the examples disclosed herein. For example, the communication manager 920 may be capable of, configured to, or operable to support components for receiving control messages indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either an SSB indicated by a PDCCH command or a TCI state indicated by a PDCCH command. The communication manager 920 may be capable of, configured to, or operable to support components for receiving PDCCH commands from a first TRP in a set of multiple TRPs. The communication manager 920 may be capable of, configured to, or operable to support components for transmitting random access messages using random access transmission power based on control messages, wherein the random access messages are sent to a target TRP, which is either a first TRP or a second TRP in a set of multiple TRPs.

[0160] By including or configuring a communication manager 920 according to an example as described herein, device 905 can support techniques for reducing latency, increasing spectral efficiency, and extending battery life. For example, the UE can send random access messages with higher accuracy and sufficient power, which can support more efficient communication between devices without retransmissions, thereby increasing battery life and spectral efficiency.

[0161] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using a transceiver 915, one or more antennas 925, or any combination thereof, or otherwise cooperating with them. Although the communication manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 920 may be supported by or performed by at least one processor 940, at least one memory 930, code 935, or any combination thereof. For example, code 935 may include instructions that can be executed by at least one processor 940 to cause device 905 to perform various aspects of multi-TA physical random access channel power control as described herein, or at least one processor 940 and at least one memory 930 may be otherwise configured to perform or support such operations individually or jointly.

[0162] Figure 10 A flowchart illustrating a method 1000 for physical random access channel power control in the presence of multiple TA values, according to various aspects of this disclosure, is shown. The operation of method 1000 can be implemented by a UE or its components as described herein. For example, the operation of method 1000 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0163] At 1005, the method may include receiving a PDCCH command from a first TRP of a set of multiple TRPs associated with the serving cell. The PDCCH command includes an indicator value indicating one or more transmission parameters for random access, including power control parameters or downlink reference timing parameters. Operation of block 1005 may be performed according to examples as disclosed herein. In some examples, aspects of operation of 1005 may be provided by reference to... Figure 8 The described PDCCH command component 825 is used to execute it.

[0164] At 1010, the method may include sending a random access message to a target TRP based on one or more transmission parameters, the target TRP being one of a set of multiple TRPs, either a first TRP or a second TRP. The operation of block 1010 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1010 may be provided by reference to [reference needed]. Figure 8 The RACH component 830 described is used to perform this.

[0165] Figure 11A flowchart illustrating a method 1100 for supporting physical random access channel power control in the presence of multiple TA values, according to various aspects of this disclosure, is shown. Operation of method 1100 can be implemented by a UE or its components as described herein. For example, operation of method 1100 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0166] At 1105, the method may include receiving a first configuration indicating two or more TAGs on the serving cell. The operation of block 1105 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1105 may be provided by reference to [reference needed]. Figure 8 The TA component 850 described is used for execution.

[0167] At 1110, the method may include receiving a second configuration indicating two or more CORESET pool index values ​​associated with the serving cell, wherein a first TRP is associated with a first CORESET pool index value among the two or more CORESET pool index values, and a second TRP is associated with a second CORESET pool index value among the two or more CORESET pool index values. The operation of block 1110 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1110 may be provided by reference to [reference]. Figure 8 The described CORESET component 855 is used to perform this.

[0168] At 1115, the method may include receiving a PDCCH command from a first TRP of a set of multiple TRPs associated with the serving cell. The PDCCH command includes an indicator value indicating one or more transmission parameters for random access, including power control parameters or downlink reference timing parameters. Operation of block 1115 may be performed according to examples as disclosed herein. In some examples, aspects of operation of 1115 may be provided by reference to... Figure 8 The described PDCCH command component 825 is used to execute it.

[0169] At 1120, the method may include sending a random access message to a target TRP based on one or more transmission parameters, the target TRP being one of a set of multiple TRPs, either a first TRP or a second TRP. The operation of block 1120 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1120 may be provided by reference to [reference needed]. Figure 8 The RACH component 830 described is used to perform this.

[0170] Figure 12 A flowchart illustrating a method 1200 for physical random access channel power control in the presence of multiple TA values, according to various aspects of this disclosure, is shown. Operation of method 1200 can be implemented by a UE or its components as described herein. For example, operation of method 1200 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0171] At 1205, the method may include receiving a control message indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either the SSB state indicated by the PDCCH command or the TCI state indicated by the PDCCH command. Operation of block 1205 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1205 may be as described in references... Figure 8 The described transmit power manager 835 is used to perform this.

[0172] At 1210, the method may include receiving a PDCCH command from a first TRP in a set of multiple TRPs. The operation of block 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1210 may be provided by reference to [reference needed]. Figure 8 The described PDCCH command manager 840 is used to execute commands.

[0173] At 1215, the method may include transmitting a random access message using a random access transmission power based on a control message, wherein the random access message is sent to a target TRP, which is one of a set of multiple TRPs, either a first TRP or a second TRP. The operation of block 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1215 may be provided by reference to [reference needed]. Figure 8 The RACH manager 845 described is used to execute this.

[0174] Figure 13 A flowchart illustrating a method 1300 for physical random access channel power control in the presence of multiple TA values, according to various aspects of this disclosure, is shown. Operation of method 1300 can be implemented by a UE or its components as described herein. For example, operation of method 1300 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0175] At 1305, the method may include receiving a configuration indicating two or more CORESET pool index values ​​for a serving cell, wherein a first TRP is associated with a first CORESET pool index value and a second TRP is associated with a second CORESET pool index value. The operation of block 1305 may be performed according to examples as disclosed herein. In some examples, it may be performed by, as referenced... Figure 8 The description of the CORESET Manager 860 is used to perform various aspects of the 1305 operation.

[0176] At 1310, the method may include receiving a control message indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either the SSB state indicated by the PDCCH command or the TCI state indicated by the PDCCH command. Operation of block 1310 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1310 may be as described in references... Figure 8 The described transmit power manager 835 is used to perform this.

[0177] At 1315, the method may include receiving a PDCCH command from a first TRP in a set of multiple TRPs. The operation of block 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1315 may be provided by reference to [reference needed]. Figure 8 The described PDCCH command manager 840 is used to execute commands.

[0178] At 1320, the method may include transmitting a random access message using a random access transmission power based on a control message, wherein the random access message is sent to a target TRP, which is one of a set of multiple TRPs, either a first TRP or a second TRP. The operation of block 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1320 may be provided by reference to [reference needed]. Figure 8 The RACH manager 845 described is used to execute this.

[0179] Figure 14 A flowchart illustrating a method 1400 for physical random access channel power control in the presence of multiple TA values, according to various aspects of this disclosure, is shown. Operation of method 1400 can be implemented by a UE or its components as described herein. For example, operation of method 1400 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0180] At 1405, the method may include receiving a configuration indicating one or more physical cell identifiers for a serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding CORESET pool index value based on the TCI state. The operation of block 1405 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1405 may be provided by reference to [reference]. Figure 8 The described cell identifier manager 865 is used to execute this.

[0181] At 1410, the method may include receiving a control message indicating that, when two or more TAGs are configured, the transmission power of random access messages performed by the UE is based on either the SSB state indicated by the PDCCH command or the TCI state indicated by the PDCCH command. Operation of block 1410 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1410 may be as described in references... Figure 8 The described transmit power manager 835 is used to perform this.

[0182] At 1415, the method may include receiving a PDCCH command from a first TRP in a set of multiple TRPs. The operation of box 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1415 may be provided by reference to [reference needed]. Figure 8 The described PDCCH command manager 840 is used to execute commands.

[0183] At 1420, the method may include transmitting a random access message using a random access transmission power based on a control message, wherein the random access message is sent to a target TRP, which is one of a set of multiple TRPs, either a first TRP or a second TRP. The operation of block 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1420 may be provided by reference to [reference needed]. Figure 8 The RACH manager 845 described is used to execute this.

[0184] The following provides an overview of the various aspects of this disclosure: Aspect 1: A method for wireless communication by a UE, the method comprising: receiving a PDCCH command from a first TRP of a plurality of TRPs associated with a serving cell, the PDCCH command including an indicator value indicating one or more transmission parameters for random access, the one or more transmission parameters including power control parameters or downlink reference timing parameters; and transmitting a random access message to a target TRP based at least in part on the one or more transmission parameters, the target TRP being one of the first TRP or a second TRP of the plurality of TRPs.

[0185] Aspect 2: According to the method of aspect 1, the method further includes: receiving a first configuration indicating two or more TAGs on the serving cell; and receiving a second configuration indicating two or more CORESET pool index values ​​associated with the serving cell, wherein the first TRP is associated with a first CORESET pool index value among the two or more CORESET pool index values, and the second TRP is associated with a second CORESET pool index value among the two or more CORESET pool index values.

[0186] Aspect 3: The method according to any one of Aspects 1 to 2, wherein the indicator value comprises a single bit.

[0187] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the indicator value indicates a path loss reference signal for the UE to determine the power control parameters.

[0188] Aspect 5: The method according to any one of Aspects 1 to 4, wherein receiving the PDCCH command comprises: receiving indications of a first TCI state corresponding to the first CORESET pool index value and a second TCI state corresponding to the second CORESET pool index value, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the first TCI state, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on the second TCI state.

[0189] Aspect 6: The method according to any one of Aspects 1 to 4, wherein receiving the PDCCH command from the first TRP comprises: receiving the PDCCH command via a CORESET associated with a first CORESET pool index value corresponding to a first TCI state, wherein the indicator value as a first value indicates that the path loss reference signal is based on a first downlink reference signal quasi-co-located with the demodulation reference signal of the PDCCH command, and the indicator value as a second value indicates that the path loss reference signal is based on a second downlink reference signal.

[0190] Aspect 7: According to the method of aspect 6, the second TCI state corresponding to the second CORESET pool index value includes the second downlink reference signal.

[0191] Aspect 8: According to the method of aspect 6, the method further includes: receiving a control message indicating that the second downlink reference signal is associated with a second TCI state corresponding to the second CORESET pool index value or with an SSB indicated by the PDCCH command.

[0192] Aspect 9: The method according to any one of Aspects 1 to 3, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference timing associated with the first CORESET pool index value, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second downlink reference timing associated with the second CORESET pool index value.

[0193] Aspect 10: The method according to any one of Aspects 1 to 3, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference signal timing associated with a first CORESET pool index value that is the same as the CORESET pool index value of the PDCCH command, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second CORESET pool index value that is different from the CORESET pool index value of the PDCCH command.

[0194] Aspect 11: The method according to any one of Aspects 1 to 10, wherein the first TRP corresponds to a first TAG configured for the serving cell, and the second TRP corresponds to a second TAG configured for the serving cell, and the indicator value is included in the PDCCH command based on at least two TAGs configured for the serving cell including the first TAG and the second TAG.

[0195] Aspect 12: The method according to any one of aspects 1 to 11, the method further comprising: receiving a control message indicating that the indicator value is included in the PDCCH command.

[0196] Aspect 13: A method for wireless communication by a UE, the method comprising: receiving a control message indicating that, when two or more TAGs are configured, the transmission power of a random access message performed by the UE is based on either an SSB indicated by a PDCCH command or a TCI state indicated by the PDCCH command; receiving the PDCCH command from a first TRP of a plurality of TRPs; and transmitting the random access message using the random access transmission power according to the control message, wherein the random access message is transmitted to a target TRP, the target TRP being either the first TRP or a second TRP of the plurality of TRPs.

[0197] Aspect 14: The method according to aspect 13, the method further comprising: receiving a configuration indicating two or more CORESET pool index values ​​for a serving cell, wherein the first TRP is associated with a first CORESET pool index value and the second TRP is associated with a second CORESET pool index value.

[0198] Aspect 15: The method according to aspect 13, the method further comprising: receiving a configuration indicating one or more physical cell identifiers for a serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding CORESET pool index value according to the TCI state.

[0199] Aspect 16: The method according to any one of Aspects 13 to 15, wherein the control message indicates that the path loss reference signal for the UE to determine the random access transmit power is based on one of the SSB or the TCI state.

[0200] Aspect 17: The method according to any one of Aspects 13 to 16, wherein receiving the PDCCH command from the first TRP comprises: receiving the PDCCH command via a CORESET associated with a CORESET pool index value corresponding to the first TRP, wherein the CORESET pool index value indicates the TCI state.

[0201] Aspect 18: The method according to any one of Aspects 13 to 17, the method further comprising: sending a capability message indicating that the UE supports the capability of cross-TRP PDCCH commands.

[0202] Aspect 19: The method according to any one of Aspects 13 to 18, wherein the control message indicates that the transmit power of the random access message performed by the UE is based on the TCI state, and the PDCCH command includes an indicator value indicating a path loss reference signal for the UE to determine the random access transmit power.

[0203] Aspect 20: The method according to any one of Aspects 13 to 19, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the TCI state corresponding to a first CORESET pool index value, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on a second TCI state corresponding to a second CORESET pool index value.

[0204] Aspect 21: The method according to any one of Aspects 13 to 18, wherein the control message indicates that the transmission power of the random access message performed by the UE is based on the SSB, and wherein receiving the PDCCH command includes: receiving an indication of the SSB, wherein the random access transmission power is based on the SSB.

[0205] Aspect 22: The method according to any one of Aspects 13 to 21, the method further comprising: sending a capability message, the capability message instructing the UE to use the SSB to determine the capability of the random access transmit power, the UE to use the TCI state to determine the capability of the random access transmit power, or both.

[0206] Aspect 23: A UE for wireless communication, the UE comprising one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the UE to perform a method according to any one of Aspects 1 to 12.

[0207] Aspect 24: A UE for wireless communication, the UE comprising at least one component for performing the method according to any one of aspects 1 to 12.

[0208] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the method according to any one of aspects 1 to 12.

[0209] Aspect 26: A UE for wireless communication, the UE comprising one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the UE to perform a method according to any one of aspects 13 to 22.

[0210] Aspect 27: A UE for wireless communication, the UE including at least one component for performing a method according to any one of aspects 13 to 22.

[0211] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform a method according to any one of aspects 13 to 22.

[0212] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more of these methods can be combined.

[0213] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described are applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0214] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0215] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternative embodiments, a processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration). Any function or operation described herein that can be performed by a processor may be performed by multiple processors capable of performing the described functions or operations individually or jointly.

[0216] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions can be stored as one or more instructions or code on a computer-readable medium or transmitted using one or more instructions or code on a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including portions distributed such that the functions are implemented in different physical locations.

[0217] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, and optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media. Any function or operation described herein that can be performed by memory can be performed by multiple memories capable of performing the described function or operation individually or jointly.

[0218] As used herein, the word "or" in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") in the claims indicates an inclusive list, such that a list of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0219] As used herein, including in claims, the article “a” preceding a noun is open-ended and is understood to refer to “at least one” or “one or more” of those nouns. Therefore, the terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. For example, where a claim enumerates “components” performing one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “component” having a characteristic or performing a function may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent references to a component introduced with the article “a” using the terms “the” or “the” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components,” and subsequent reference to “component” in a claim may be understood to be equivalent to referring to “at least one of the one or more components.” Similarly, subsequent references to a component introduced with the terms “the” or “the” as “one or more components” may refer to any or all of the one or more components. For example, reference to "one or more components" in subsequent claims can be understood as equivalent to reference to "at least one of the one or more components".

[0220] The term "determine" encompasses a variety of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), identification, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), etc. Moreover, "determine" can include parsing, acquiring, selecting, choosing, building, and other similar actions.

[0221] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second reference numeral to differentiate them. If only the first reference numeral is used in the description, the description can be applied to any of the similar components having the same first reference numeral, regardless of the second or other subsequent reference numerals.

[0222] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0223] The description herein is provided to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE), the user equipment (UE) comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the UE: A physical downlink control channel command is received from a first transmit / receive point among a plurality of transmit / receive points associated with the serving cell. The physical downlink control channel command includes an indicator value indicating one or more transmit parameters for random access, the one or more transmit parameters including power control parameters or downlink reference timing parameters. as well as A random access message is sent to a target sender / receiver point based at least in part on one or more of the sending parameters, wherein the target sender / receiver point is one of the first sender / receiver point or the second sender / receiver point among the plurality of sender / receiver points.

2. The UE of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Receive a first configuration indicating two or more timing advance groups (TAGs) on the serving cell; and The receiving indication is a second configuration of two or more control resource set (CORESET) pool index values ​​associated with the serving cell, wherein the first transmit / receive point is associated with a first CORESET pool index value among the two or more CORESET pool index values, and the second transmit / receive point is associated with a second CORESET pool index value among the two or more CORESET pool index values.

3. The UE according to any one of claims 1 to 2, wherein the indicator value comprises a single bit.

4. The UE according to any one of claims 1 to 3, wherein the indicator value indicates a path loss reference signal used by the UE to determine the power control parameters.

5. The UE according to any one of claims 1 to 4, wherein, In order to receive the physical downlink control channel command, the one or more processors can operate individually or jointly to execute the code to enable the UE to: Receive indications for a first transmit control indicator (TCI) state corresponding to the first CORESET pool index value and a second TCI state corresponding to the second CORESET pool index value, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the first TCI state, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on the second TCI state.

6. The UE according to any one of claims 1 to 4, wherein, In order to receive the physical downlink control channel command from the first transmitting and receiving point, the one or more processors can operate individually or jointly to execute the code to enable the UE to: The physical downlink control channel command is received via a CORESET associated with the first CORESET pool index value corresponding to the first transmit control indicator (TCI) state, wherein the indicator value as a first value indicates that the path loss reference signal is based on a first downlink reference signal quasi-co-located with the demodulation reference signal of the physical downlink control channel command, and the indicator value as a second value indicates that the path loss reference signal is based on a second downlink reference signal.

7. The UE of claim 6, wherein the second TCI state corresponding to the second CORESET pool index value includes the second downlink reference signal.

8. The UE of claim 6, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: A control message is received, which indicates that the second downlink reference signal is associated with a second TCI state corresponding to the second CORESET pool index value or with a synchronization signal block indicated by the physical downlink control channel command.

9. The UE according to any one of claims 1 to 3, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference timing associated with the first CORESET pool index value, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second downlink reference timing associated with the second CORESET pool index value.

10. The UE according to any one of claims 1 to 3, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference signal timing associated with a first CORESET pool index value that is the same as the CORESET pool index value of the physical downlink control channel command, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second CORESET pool index value that is different from the CORESET pool index value of the physical downlink control channel command.

11. The UE according to any one of claims 1 to 10, wherein the first transmit / receive point corresponds to a first timing advance group (TAG) configured for the serving cell, and the second transmit / receive point corresponds to a second TAG configured for the serving cell, and wherein the indicator value included in the physical downlink control channel command is configured for the serving cell including the first TAG and the second TAG based on at least two TAGs.

12. The UE according to any one of claims 1 to 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Receive a control message, the control message indicating that the indicator value is included in the physical downlink control channel command.

13. A user equipment (UE), the user equipment (UE) comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the UE: Receive a control message indicating that when two or more timing advance groups (TAGs) are configured, the transmission power of random access messages performed by the UE is based on either a synchronization signal block indicated by a physical downlink control channel command or a transmission control indicator (TCI) state indicated by the physical downlink control channel command. Receive the physical downlink control channel command from a first transmitting and receiving point among a plurality of transmitting and receiving points; and The random access message is transmitted using a random access transmission power based on the control message, wherein the random access message is sent to a target transmission / reception point, which is one of the first or second transmission / reception points among the plurality of transmission / reception points.

14. The UE of claim 13, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: The receiving instruction configures two or more control resource set (CORESET) pool index values ​​for the serving cell, wherein the first transmit / receive point is associated with a first CORESET pool index value and the second transmit / receive point is associated with a second CORESET pool index value.

15. The UE of claim 13, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Receive an instruction for configuring one or more physical cell identifiers for the serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding control resource set (CORESET) pool index value according to the TCI state.

16. The UE according to any one of claims 13 to 15, wherein the control message indicates that the path loss reference signal for determining the random access transmit power by the UE is based on one of the synchronization signal block or the TCI state.

17. The UE according to any one of claims 13 to 16, wherein, In order to receive the physical downlink control channel command from the first transmitting and receiving point, the one or more processors can operate individually or jointly to execute the code to enable the UE to: The physical downlink control channel command is received via a CORESET associated with a control resource set (CORESET) pool index value corresponding to the first transmit / receive point, wherein the CORESET pool index value indicates the TCI state.

18. The UE according to any one of claims 13 to 17, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Send a capability message indicating that the UE supports the capability of cross-transmit / receive point physical downlink control channel commands.

19. The UE according to any one of claims 13 to 18, wherein: The control message indicates that the transmission power of the random access message performed by the UE is based on the TCI state, and The physical downlink control channel command includes an indicator value that indicates a path loss reference signal used by the UE to determine the random access transmit power.

20. The UE according to any one of claims 13 to 19, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the TCI state corresponding to a first CORESET pool index value, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on a second TCI state corresponding to a second CORESET pool index value.

21. The UE according to any one of claims 13 to 18, wherein the control message indicates that the transmission power of the random access message performed by the UE is based on the synchronization signal block, and wherein, In order to receive the physical downlink control channel command, the one or more processors can operate individually or jointly to execute the code to enable the UE to: Receive an indication of the synchronization signal block, wherein the random access transmit power is based on the synchronization signal block.

22. The UE according to any one of claims 13 to 21, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Send a capability message, the capability message instructing the UE to use the synchronization signal block to determine the capability of the random access transmit power, the UE to use the TCI state to determine the capability of the random access transmit power, or both.

23. A method for wireless communication by a user equipment (UE), the method comprising: A physical downlink control channel command is received from a first transmit / receive point among a plurality of transmit / receive points associated with the serving cell. The physical downlink control channel command includes an indicator value indicating one or more transmit parameters for random access, the one or more transmit parameters including power control parameters or downlink reference timing parameters. as well as A random access message is sent to a target sender / receiver point based at least in part on one or more of the sending parameters, wherein the target sender / receiver point is one of the first sender / receiver point or the second sender / receiver point among the plurality of sender / receiver points.

24. The method according to claim 23, further comprising: Receive a first configuration indicating two or more timing advance groups (TAGs) on the serving cell; as well as The receiving indication is a second configuration of two or more control resource set (CORESET) pool index values ​​associated with the serving cell, wherein the first transmit / receive point is associated with a first CORESET pool index value among the two or more CORESET pool index values, and the second transmit / receive point is associated with a second CORESET pool index value among the two or more CORESET pool index values.

25. The method of any one of claims 23 to 24, wherein the indicator value comprises a single bit.

26. The method according to any one of claims 23 to 25, wherein the indicator value indicates a path loss reference signal for the UE to determine the power control parameters.

27. The method according to any one of claims 23 to 26, wherein receiving the physical downlink control channel command comprises: Receive indications for a first transmit control indicator (TCI) state corresponding to the first CORESET pool index value and a second TCI state corresponding to the second CORESET pool index value, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the first TCI state, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on the second TCI state.

28. The method according to any one of claims 23 to 26, wherein receiving the physical downlink control channel command from the first transmitting / receiving point comprises: The physical downlink control channel command is received via a CORESET associated with the first CORESET pool index value corresponding to the first transmit control indicator (TCI) state, wherein the indicator value as a first value indicates that the path loss reference signal is based on a first downlink reference signal quasi-co-located with the demodulation reference signal of the physical downlink control channel command, and the indicator value as a second value indicates that the path loss reference signal is based on a second downlink reference signal.

29. The method of claim 28, wherein the second TCI state corresponding to the second CORESET pool index value includes the second downlink reference signal.

30. The method according to claim 28, further comprising: A control message is received, which indicates that the second downlink reference signal is associated with a second TCI state corresponding to the second CORESET pool index value or with a synchronization signal block indicated by the physical downlink control channel command.

31. The method of any one of claims 23 to 25, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference timing associated with the first CORESET pool index value, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second downlink reference timing associated with the second CORESET pool index value.

32. The method according to any one of claims 23 to 25, wherein the indicator value as a first value indicates that the downlink reference timing parameter corresponds to a first downlink reference signal timing associated with a first CORESET pool index value that is the same as the CORESET pool index value of the physical downlink control channel command, and the indicator value as a second value indicates that the downlink reference timing parameter corresponds to a second CORESET pool index value that is different from the CORESET pool index value of the physical downlink control channel command.

33. The method according to any one of claims 23 to 32, wherein The first transmit / receive point corresponds to a first timing advance group (TAG) configured for the serving cell, and the second transmit / receive point corresponds to a second TAG configured for the serving cell. The physical downlink control channel command includes the indicator value, which is configured based on at least two TAGs for the serving cell including the first TAG and the second TAG.

34. The method according to any one of claims 23 to 33, further comprising: Receive a control message, the control message indicating that the indicator value is included in the physical downlink control channel command.

35. A method for wireless communication by a user equipment (UE), the method comprising: Receive a control message indicating that when two or more timing advance groups (TAGs) are configured, the transmission power of random access messages performed by the UE is based on either a synchronization signal block indicated by a physical downlink control channel command or a transmission control indicator (TCI) state indicated by the physical downlink control channel command. Receive the physical downlink control channel command from a first transmitting and receiving point among a plurality of transmitting and receiving points; and The random access message is transmitted using a random access transmission power based on the control message, wherein the random access message is sent to a target transmission / reception point, which is one of the first or second transmission / reception points among the plurality of transmission / reception points.

36. The method according to claim 35, further comprising: The receiving instruction configures two or more control resource set (CORESET) pool index values ​​for the serving cell, wherein the first transmit / receive point is associated with a first CORESET pool index value and the second transmit / receive point is associated with a second CORESET pool index value.

37. The method of claim 35, further comprising: Receive an instruction for configuring one or more physical cell identifiers for the serving cell, wherein each of the one or more physical cell identifiers corresponds to a corresponding control resource set (CORESET) pool index value according to the TCI state.

38. The method according to any one of claims 35 to 37, wherein the control message indicates that the path loss reference signal for the UE to determine the random access transmit power is based on one of the synchronization signal block or the TCI state.

39. The method according to any one of claims 35 to 38, wherein receiving the physical downlink control channel command from the first transmitting / receiving point comprises: The physical downlink control channel command is received via a CORESET associated with a control resource set (CORESET) pool index value corresponding to the first transmit / receive point, wherein the CORESET pool index value indicates the TCI state.

40. The method according to any one of claims 35 to 39, further comprising: Send a capability message indicating that the UE supports the capability of cross-transmit / receive point physical downlink control channel commands.

41. The method according to any one of claims 35 to 40, wherein The control message indicates that the transmission power of the random access message performed by the UE is based on the TCI state, and The physical downlink control channel command includes an indicator value that indicates a path loss reference signal used by the UE to determine the random access transmit power.

42. The method according to any one of claims 35 to 41, wherein the indicator value as a first value indicates a first downlink reference signal of the path loss reference signal based on the TCI state corresponding to a first CORESET pool index value, and the indicator value as a second value indicates a second downlink reference signal of the path loss reference signal based on a second TCI state corresponding to a second CORESET pool index value.

43. The method of any one of claims 35 to 40, wherein the control message indicates that the transmission power of the random access message performed by the UE is based on the synchronization signal block, and wherein receiving the physical downlink control channel command comprises: Receive an indication of the synchronization signal block, wherein the random access transmit power is based on the synchronization signal block.

44. The method according to any one of claims 35 to 43, the method further comprising: Send a capability message, the capability message instructing the UE to use the synchronization signal block to determine the capability of the random access transmit power, the UE to use the TCI state to determine the capability of the random access transmit power, or both.

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