Asymmetric downlink single TRP uplink multi-TRP operation
By configuring UEs to support increased starting block locations and applying pathloss offsets and CLPC indices in asymmetric multi-TRP scenarios, the solution addresses communication challenges in 5G NR networks, improving uplink operations in asymmetric TRP environments.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2026-04-02
AI Technical Summary
Existing 5G NR networks face challenges in asymmetric multi-TRP operations, particularly in scenarios where a user equipment (UE) has uplink communications with multiple transmission and reception points (TRPs) but only downlink communications with one TRP, leading to issues in determining pathloss offsets and closed-loop power control for SRS transmissions and PRACH procedures.
The solution involves configuring the UE to support an increased range for starting block locations in DCI Format 2_3, applying pathloss offsets and closed-loop power control (CLPC) indices for SRS resource sets not associated with a Transmission Configuration Indicator (TCI) state, and managing PRACH procedures in asymmetric TRP scenarios.
This approach enhances the efficiency and effectiveness of uplink communications in asymmetric multi-TRP scenarios by clarifying pathloss and power control settings, ensuring reliable data transmission and reception in 5G NR networks.
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Figure CN2024121216_02042026_PF_FP_ABST
Abstract
Description
Asymmetric Downlink Single TRP Uplink Multi-TRP OperationBackground
[0001] A user equipment (UE) may connect to a network via a base station. The base station may control multiple transmission and reception points (TRPs) . The UE may operate in multi-TRP (mTRP) mode where the UE establishes and maintains a connection with multiple TRPs at the same time.
[0002] In some scenarios, the mTRP operation may be asymmetric with respect to a UE. For example, there may be a scenario where the UE is communicating with two TRPs. The UE may have uplink (UL) communications with both TRPs but only downlink (DL) communications with one of the TRPs. This may be referred to as asymmetric TRP operation.Summary
[0003] Some example embodiments are related to an apparatus having processing circuitry configured to determine a user equipment (UE) supports a range for a starting block location in Downlink Control Information (DCI) Format 2_3 that is greater than 31 bits and configure, for transmission to the UE, a DCI Format 2_3 transmission comprising the range for the starting block location that is greater than 31 bits.
[0004] Other example embodiments are related to an apparatus having processing circuitry configured to process, based on signaling received from a serving cell, a Downlink Control Information (DCI) indication to perform a Physical Uplink Random Access Channel (PRACH) procedure with a transmission and reception point (TRP) , wherein the apparatus has an uplink (UL) connection with the TRP but not a downlink (DL) connection and determine whether a pathloss offset is to be applied for the PRACH procedure.
[0005] Still further example embodiments are related to an apparatus having processing circuitry configured to process, based on signaling received from a serving cell, a configuration for a sounding reference signal (SRS) resource set, determine the SRS resource set is not associated with a transmission configuration indicator (TCI) , determine a pathloss offset to be applied to transmitting SRS of the SRS resource set and determine a closed-loop power control (CLPC) index to the applied to transmitting SRS of the SRS resource set.Brief Description of the Drawings
[0006] Fig. 1 shows an example network arrangement according to various example embodiments.
[0007] Fig. 2 shows an example user equipment (UE) according to various example embodiments.
[0008] Fig. 3 shows an example base station according to various example embodiments.
[0009] Fig. 4 shows an example system arrangement where a UE is communicating with an asymmetric mTRP arrangement according to various example embodiments.
[0010] Fig. 5 shows an example method for configuring a UE with sounding reference signal (SRS) transmit power control (TPC) commands according to various example embodiments.
[0011] Fig. 6 shows an example method for a UE performing a PRACH procedure in an asymmetric mTRP scenario according to various example embodiments.
[0012] Fig. 7 shows an example method for determining a pathloss offset and a closed-loop power control (CLPC) index associated with a sounding reference signal (SRS) resource set that is not associated with a transmission configuration indicator (TCI) according to various example embodiments.Detailed Description
[0013] The example embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The example embodiments relate to asymmetric TRP operation. Specifically, the example embodiments relate to transmit power control (TPC) commands sent by a network to a UE, Physical Random Access Channel (PRACH) procedures performed between a UE and an asymmetric TRP and sounding reference signal (SRS) power control for SRS resource sets not associated with a Transmission Configuration Indicator (TCI) state.
[0014] The example embodiments are described with regard to a user equipment (UE) . However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to a network and is configured with the hardware, software, and / or firmware to exchange information and data with the network. Therefore, the UE as described herein is used to represent any appropriate type of electronic component.
[0015] The example embodiments are also described with regard to a fifth generation (5G) New Radio (NR) network and a next generation node B (gNB) . However, reference to a 5G NR network and a gNB is merely provided for illustrative purposes. The example embodiments may be utilized with any appropriate type of network (e.g., 5G Advanced, 6G, etc. ) and base station.
[0016] Some of the example embodiments are described with reference to releases of the Third Generation Partnership (3GPP) standards related to 5G NR operations. These standards are referred to by the release number, e.g., Rel-17, Rel-18, etc.
[0017] The gNB may be configured with multiple transmission and reception points (TRPs) . Throughout this description, a TRP generally refers to a set of components configured to transmit and / or receive a beam. In some embodiments, multiple TRPs may be deployed locally at the gNB. For example, the gNB may include multiple antenna arrays / panels that are each configured to generate a different beam. In other embodiments, multiple TRPs may be deployed at various different locations and connected to the gNB via a backhaul connection. For example, multiple small cells may be deployed at different locations and connected to the gNB. However, these examples are merely provided for illustrative purposes. TRPs are configured to be adaptable to a wide variety of different conditions and deployment scenarios. Thus, any reference to a TRP being a particular network component or multiple TRPs being deployed in a particular arrangement is merely provided for illustrative purposes. The TRPs described herein may represent any type of network component configured to transmit and / or receive a beam.
[0018] The example embodiments describe operations for asymmetric mTRP operation, including operations for an increase of a range of a starting block location in a Downlink Control Indication (DCI) Format 2_3 providing TPC commands to a UE in an asymmetric TRP scenario, operations for determining whether and what value of a pathloss offset is to be applied to a PRACH procedure a UE is performing with an asymmetric TRP and operations for determining a pathloss offset and a closed-loop power control (CLPC) index for SRS transmissions when the SRS resource set is not associated with a TCI state. These and other example embodiments are described in greater detail below.
[0019] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, phablets, embedded devices, wearables, Internet of Things (IoT) devices, etc. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of a single UE 110 is merely provided for illustrative purposes.
[0020] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a 5G NR radio access network (RAN) 120. However, the UE 110 may also communicate with other types of networks (e.g., sixth generation (6G) RAN, 5G cloud RAN, a next generation RAN (NG-RAN) , a long-term evolution (LTE) RAN, a legacy cellular network, a wireless local area network (WLAN) , etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have at least a 5G NR chipset to communicate with the 5G NR RAN 120.
[0021] The 5G NR RAN 120 may be a portion of a cellular network that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The 5G NR RAN 120 may include base stations or access nodes (Node Bs, eNodeBs, HeNBs, eNBS, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set.
[0022] In the network arrangement 100, the 5G NR RAN 120 deploys a gNB 120A. The gNB 120A may be configured with multiple TRPs. Each TRP may represent one or more components configured to transmit and / or receive a signal. In some embodiments, multiple TRPs may be deployed locally at the gNB 120A. In other embodiments, multiple TRPs may be distributed at different locations and connected to the gNB 120A via a backhaul connection. For example, multiple small cells may be deployed at different locations and connected to the gNB 120A. However, these examples are merely provided for illustrative purposes. TRPs are configured to be adaptable to a wide variety of different conditions and deployment scenarios. Thus, any reference to a TRP being a particular network component or multiple TRPs being deployed in a particular arrangement is merely provided for illustrative purposes. The TRPs described herein may represent any type of network component configured to transmit and / or receive a beam.
[0023] Any association procedure may be performed for the UE 110 to connect to the 5G NR RAN 120. For example, as discussed above, the 5G NR RAN 120 may be associated with a particular cellular provider where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a SIM card) . Upon detecting the presence of the 5G NR RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR RAN 120. More specifically, the UE 110 may associate with a specific base station, e.g., the gNB 120A.
[0024] The network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 may refer to an interconnected set of components that manages the operation and traffic of the cellular network. It may include the evolved packet core (EPC) and / or the 5G core (5GC) . The cellular core network 130 also manages the traffic that flows between the cellular network and the Internet 140. The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0025] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the network arrangement 100 of Fig. 1. The UE 110 may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225 and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a power supply, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, etc.
[0026] The processor 205 may be configured to execute a plurality of engines of the UE 110. For example, the engines may include an asymmetric mTRP engine 235 that may perform various operations related to asymmetric mTRP operation. To provide some general examples, the asymmetric mTRP engine 235 may perform operations such as, but not limited to, sending UE capability information related to support of an increased range for starting block locations in DCI Format 2_3, determining whether a pathloss offset is to be applied to PRACH procedures and determining a pathloss offset and / or CLPC index to be applied to SRS when the SRS resource set is not associated with a TCI state. These operations are described in greater detail below.
[0027] The above referenced engine 235 being applications (e.g., a program) executed by the processor 205 is merely provided for illustrative purposes. The functionality associated with the engine 235 may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engine may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0028] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0029] The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. Accordingly, the transceiver 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 225 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the transceiver 225 and configured to receive from and / or transmit signals to the transceiver 225. The processor 205 may be configured to encode, decode and / or process signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0030] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the gNB 120A or any other type of access node through which the UE 110 may establish a connection and manage network operations.
[0031] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, multiple TRPs 330 and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, TxRUs, transceiver chains, antenna elements, antenna panels, etc.
[0032] As indicated above, in some scenarios, the multiple TRPs 330 may be deployed locally at the base station 300. In other scenarios, one or more of the multiple TRPs 330 may be deployed at physical locations remote from the base station 300 and connected to the base station via a backhaul connection. The base station 300 may be configured to control the multiple TRPs 330 and perform operations such as, but not limited to, assigning resources, configuring reference signals, implementing beam management techniques, etc.
[0033] The processor 305 may be configured to execute a plurality of engines for the base station 300. For example, the engines may include an asymmetric mTRP configuration engine 335 that may perform various operations related to asymmetric mTRP operation. To provide some general examples, the asymmetric mTRP configuration engine 335 may perform operations such as, but not limited to, configuring a UE with a DCI Format 2_3 having an increased range for starting block locations, triggering a PRACH procedure for an asymmetric TRP including configuring a pathloss offset to be applied to the PRCH procedure and configuring the UE with an SRS resource set configuration that is not associated with a TCI state including a configuration of a pathloss offset and / or CLPC index that is to be applied to the SRS. These operations are described in greater detail below.
[0034] The above noted engine 335 being applications (e.g., a program) executed by the processor 305 is only an example. The functionality associated with the engine 335 may also be represented as a separate incorporated component of the base station 300 or may be a modular component coupled to the base station 300, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. In addition, in some base stations, the functionality described for the processor 305 is split among a plurality of processors (e.g., a baseband processor, an applications processor, etc. ) . The example embodiments may be implemented in any of these or other configurations of a base station.
[0035] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300.
[0036] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UEs in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . Therefore, the transceiver 320 may include one or more components to enable the data exchange with the various networks and UEs. The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode, decode and / or signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0037] Fig. 4 shows an example system arrangement 400 where a UE 110 is communicating with an asymmetric mTRP arrangement according to various example embodiments. In the example of Fig. 4, the UE 110 is communicating with a first TRP 410 and a second TRP 420. The UE 110 is communicating in both the DL and UL with the TRP 410. However, the UE 110 is only communicating in the UL with the TRP 420. The TRPs 410 and 420 may be associated with a base station (e.g., base station 300) that may be a serving cell for the UE 110 in this scenario.
[0038] In a first aspect, the example embodiments relate to an increase in a range for a starting block location in a DCI Format 2_3. The DCI Format 2_3 may be used for sounding reference signal (SRS) closed loop power control and, may also trigger aperiodic SRS transmissions simultaneously for an uplink (UL) without Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH) or an UL on which the SRS power control is not tied with PUSCH power control.
[0039] The current 3GPP standards (e.g., TS 38.212) , indicate that the DCI Format 2_3 needs to have size alignment with fallback DCI 1_0, which is 46 bits in shared spectrum in Frequency Range 1 (FR1) or Frequency Range 2-2 (FR2-2) , and 44 bits otherwise, e.g., the base station may pad the DCI Format 2_3 to be size aligned with the fallback DCI 1_0. This allows a decoder (e.g., the UE) to decode a single payload and after the payload is decoded, the contexts of the payload include an indicator allowing the UE to understand whether it is a fallback DCI 1_0 or a DCI Format 2_3.
[0040] The DCI Format 2_3 is not a typical DCI in that it is intended to be received by multiple UEs. Thus, the network may indicate to the UE where information for the particular UE begins in the DCI Format 2_3. This information may include a starting block location for the UE. The starting block location may be configured via Radio Resource Control (RRC) signaling as startingBitOfFormat2-3 or startingBitOfFormat2-3SUL as defined in 3GPP TS 38.331. Currently the maximum range is 31.
[0041] As described above, the base station may pad the DCI Format 2_3 to be size aligned with the fallback DCI 1_0. Thus, there may be additional usable bits in the DCI Format 2_3 such that the starting block location may be increased from the current value of 31. This increase of the starting block location may create various issues on both the network side and the UE side. Thus, the example embodiments address this increase in the value of the starting block location.
[0042] Some example embodiments address the issue of the application of the increase of the range for the starting block location, e.g., can the network configure the UE with the increase of the range for the starting block location. In the asymmetric mTRP scenario described with reference to Fig. 4, the UE 110 may support two closed-loop power adjustment states for SRS. The issue of whether a UE supports the increase of the range for the starting block location may be related (or conditioned) on whether the UE also supports two closed-loop power adjustment states for SRS. However, this is not a requirement as will be described in the example options below.
[0043] For example, in a first option, the increase may apply to UEs that report supporting the increase of the starting block location feature. For example, the UE may report a UE capability indicating the UE supports the increase of the starting block location. The UE may separately report whether the UE supports this feature irrespective of whether UE supports two closed-loop power adjustment states for SRS, both separate from PUSCH.
[0044] In a second option, the increase may apply to UEs that are configured with two closed-loop power adjustment states for SRS, both separate from PUSCH.
[0045] In a third option, the increase may apply to UEs that support two close-loop power adjustment states for SRS, both separate from PUSCH. The difference between the second option and the third option is that in the second option, the UE is configured with the two close-loop power adjustment states for SRS, whereas, in the third option, the UE supports two close-loop power adjustment states for SRS but may not be currently configured with this feature.
[0046] As described above, the starting block location may be configured via RRC signaling as startingBitOfFormat2-3 or startingBitOfFormat2-3SUL. In some example embodiments, the increase of the range for the starting block location only applies to startingBitOfFormat2-3. In other example embodiments, the increase of the range for the starting block location applies to both startingBitOfFormat2-3 and startingBitOfFormat2-3SUL. In these example embodiments, the UE may separately report whether the UE supports the range increase for startingBitOfFormat2-3 and / or startingBitOfFormat2-3SUL.
[0047] As described above, the DCI Format 2_3 may be used for SRS closed loop power control, e.g., the DCI Format 2_3 may include a Transmit Power Control (TPC) command for the UE for SRS transmissions. The number of bits that may be used for a specific UE in the DCI Format 2_3 may depend on the number of closed-loop power adjustment states configured for the UE. For example, when one closed-loop power adjustment state for SRS is configured for a UE, the corresponding block of the DCI Format 2_3 may use 2 bits (e.g., 2-bit TPC) . When 2 closed- loop power adjustment states for SRS are configured, the corresponding block of the DCI Format 2_3 uses 3 bits (e.g., 1-bit Closed-loop power control (CLPC) index, 2-bit TPC) . The 1-bit CLPC index indicates to the UE to which of the two closed-loop power adjustment states the TPC applies. The increase of the range of the starting block location may depend on whether one or two closed-loop power adjustment states for SRS are configured.
[0048] In some example embodiments, if the range increase applies to both one and two closed-loop power adjustment states for SRS, for shared spectrum in FR1 and FR2-2, the range may be increased from 31 to 45. For example, as described above the DCI Format 1_0 is 46 bits for this spectrum. If each block is 2 bits, then the maximum range is 45 which is the last possible starting bit of the block (e.g., block is 2 bits, so the 45th and 46th bit will be used for the last block) . For other spectrums, the range may be increased from 31 to 43.
[0049] In other example embodiments, if the range increase applies only to two closed-loop power adjustment states for SRS, for shared spectrum in FR1 and FR2-2, the range may be increased from 31 to 44. For other spectrums, the range may be increased from 31 to 42.
[0050] Fig. 5 shows an example method 500 for configuring a UE with sounding reference signal (SRS) transmit power control (TPC) commands according to various example embodiments. The example method 500 may be performed by, for example, the base station 300 operating as a serving cell in the arrangement 400 of Fig. 4, e.g., with asymmetric scenario of the two TRPs 410 and 420 with the UE 110. As described above, the SRS TPC commands may be sent to a UE 110 using DCI Format 2_3. In this example method, the base station 300 may determine if the DCI Format 2_3 used to send the SRS TPC commands may include the increased range for the starting block information.
[0051] In 510, the base station 300 may determine if the UE 110 supports an increased range for the starting block information in the DCI Format 2_3. As described above, the base station 300 may determine this based on whether the UE 110 is configured with (or supports) two closed-loop power adjustment states, e.g., one for the UL to the TRP 410 and one for the UL to the TRP 420. In other example embodiments, the determination may not depend on the closed-loop power adjustment states, e.g., the UE 110 may report a UE capability that the UE supports the increased range for the starting block information in the DCI Format 2_3.
[0052] In 520, when the base station 300 determines the UE 110 supports the increased range for the starting block information, the base station may transmit DCI Format 2_3 with the increased range for the starting block information to the UE 110 for the purposes of SRS power control, e.g., including SRS TPC commands. As described above, this increase may apply to the startingBitOfFormat2-3 information element (IE) or thestartingBitOfFormat2-3SUL IE of the DCI Format 2_3. In addition, the SRS power control information corresponding to the UE 110 may be included in two bits or three bits depending on the number of closed-loop power adjustment states configured for the UE 110.
[0053] In a second aspect, the example embodiments relate to a Physical Downlink Control Channel (PDCCH) -order triggered Physical Random Access Channel (PRACH) procedure for the TRP that is UL only, e.g., the TRP 420 of Fig. 4. The PDCCH-order triggered PRACH is triggered by DCI Format 1_0 as specified by 3GPP TS38.212. Because the UE 110 does not have a DL link with the TRP, the UE 110 may have no indication as to how pathloss offset should be considered for the PRACH. The example embodiments address this issue of applying pathloss to a PRACH procedure in the asymmetric TRP scenario.
[0054] In the example embodiments, the network may indicate whether the UE is to apply the pathloss offset for the PRACH. In one option, the indication may be a 1-bit field in the DCI Format 1_0 triggering the PRACH, e.g., a bit value of 1 indicates the pathloss should be applied, a bit value of 0 indicates the pathloss should not be applied.
[0055] In other example embodiments, the network may indicate whether the UE should apply the pathloss offset in combination with instructions to determine the pathloss offset, e.g., the indication to apply the pathloss offset is combined in a field with an indication as to how to determine the pathloss offset. Examples of such combined fields are described in greater detail below.
[0056] In some example embodiments, the pathloss offset may be determined based on a linkage between the existing “SS / PBCH index” field in the PDCCH-order DCI (e.g., DCI Format 1_0) and the indicated joint / UL transmission configuration indicator (TCI) state. That is, the pathloss offset may be included in the TCI state configuration but the UE needs to understand which TCI state the UE should use to determine the pathloss offset. There may be up to 2 indicated joint / UL TCI states for the UE.
[0057] There are three possibilities for the linkage between the SS / PBCH index field in the PDCCH-order DCI and the indicated joint / UL TCI. A first possibility is that the SS / PBCH index is neither a direct nor indirect quasi-co-located (QCL) source of the SSB for neither of the indicated joint / UL TCI states. When this occurs, in a first option, the UE may not apply the pathloss offset for the PRACH. In a second option, the UE may apply a pathloss offset based on a value that is separately configured by the network, e.g., by RRC that may be updated by a Medium Access Control Control Element (MAC-CE) .
[0058] A second possibility is that the SS / PBCH index is a direct or indirect QCL source of the SSB for one of the indicated joint / UL TCI states. When this occurs, the UE may use the pathloss offset associated with the corresponding indicated joint / UL TCI state.
[0059] A third possibility is that the SS / PBCH index is a direct or indirect QCL source of the SSB for both of the indicated joint / UL TCI states. When this occurs, there may be two options. In a first option, the UE may expect the pathloss offset from both indicated joint / UL TCI states to be the same and therefore may apply the pathloss offset from either TCI state. In a second option, the UE may select a default pathloss offset that is either from the first or second indicated joint / UL TCI state (e.g., based on TCI index) , or the network may have previously configured the UE with the default TCI state for this scenario.
[0060] In some example embodiments, a 1-bit field may be introduced in the DCI Format 1_0 for PDCCH-order triggered PRACH to indicate the pathloss offset that should be applied to the PRACH, e.g., the pathloss offset from the first indicated joint / UL TCI state or the second indicated joint / UL TCI state. For example, a value of 0 in the 1-bit field may indicate that the UE is to apply the pathloss offset configured in the first indicated joint / UL TCI state. A value of 1 in the 1-bit field may indicate that the UE is to apply the pathloss offset configured in the second indicated joint / UL TCI state.
[0061] In other example embodiments, a 2-bit field may be introduced in the DCI Format 1_0 for PDCCH-order triggered PRACH to indicate whether the pathloss offset is to be applied and which pathloss offset to use. For example, a value of 00 in the 2-bit field may indicate to the UE that the pathloss offset is not to be applied to the PRACH. A value of 01 in the 2-bit field may indicate to the UE to apply the pathloss offset configured in the first indicated joint / UL TCI state. A value of 10 in the 2-bit field may indicate to the UE to apply the pathloss offset configured in the second indicated joint / UL TCI state. The value 11 may be reserved for future use. In the above examples, the specific bit values are only examples and the values of the bits used to indicate the specific information may be altered.
[0062] Fig. 6 shows an example method 600 for a UE performing a PRACH procedure in an asymmetric mTRP scenario according to various example embodiments. The example method 600 may be performed by the UE 110 when performing a PRCH procedure with the TRP 420 in the asymmetric mTRP scenario of Fig. 4, e.g., the TRP where the UE only has a UL connection.
[0063] In 610, the UE 110 may receive the DCI Format 1_0 from the serving cell that triggers the PRACH procedure for the TRP 420. In 620, the UE 110 may determine whether the UE 110 should apply a pathloss offset to the PRACH procedure. As described above, in some example embodiments, the serving cell may explicitly indicate whether UE is to apply the pathloss offset. This indication may be separate from the pathloss offset that is to be applied or may be combined with information for the UE 110 to determine the value of the pathloss offset.
[0064] In 630, if the UE 110 determines that the pathloss offset is to be applied, the UE 110 may then determine a value of the pathloss offset. In some example embodiments, the UE 110 may determine the value of the pathloss offset based on a linkage between a SS / PBCH included in the DCI Format 1_0 and an indicated UL TCI state for the UE 110. In other example embodiments, the DCI Format 1_0 may include explicit bit indications identifying the indicated TCI state that includes the pathloss offset value to be used in the PRACH procedure
[0065] In 640, the UE 110 performs the PRACH procedure with the TRP 420, either without a pathloss offset (as determined in 620) or with the pathloss offset value determined in 630.
[0066] In a third aspect, the example embodiments are related to the SRS power control. The SRS power control is configured per SRS-ResourceSet and as described above, the pathloss offset is configured for each joint / UL TCI state. In addition, a new RRC parameter per bandwidth part (BWP) or component carrier (CC) may be introduced for the network to indicate to the UE that two separate SRS CLPC adjustment states are configured for SRS in a BWP / CC. The CLPC adjustment state index may be configured in the joint / UL TCI state, e.g., Uplink-powerControlId-r17 is configured in joint / UL TCI state. However, currently, the UE may be allowed that the SRS-ResourceSet does not follow the indicated joint / UL TCI state, e.g., the followUnifiedTCI-StateSRS information element (IE) is not configured. This breaks the linkage between the TCI and the SRS. However, as described above, the TCI state may include the CLPC index for closed-loop power control and a pathloss for open-loop power control. When the linkage is broken, the UE may not understand which CLPC index or pathloss to apply. The example embodiments provide solutions for these ambiguities that the UE may experience.
[0067] In some example embodiments, when the SRS resource set is not configured with a TCI state, e.g., followUnifiedTCI-StateSRS in SRS-ResourceSet is not configured, the UE may apply a pathloss offset that is separately configured by the network (e.g., base station, gNB, etc. ) . In a first option, the network may configure a pathloss offset that is common for all the SRS resource sets that do not have a corresponding TCI state, e.g., as part of the UL serving cell configuration or the UL BWP configuration. For example, the pathloss offset may be set to no pathloss offset. In another example, the pathloss offset may be the pathloss offset from one of the joint / UL TCI states among the indicated joint / UL TCI states, all MAC-CE activated joint / UL TCI states, or all RRC configured joint / UL TCI states.
[0068] In a second option, the network may configure the pathloss offset separately for each SRS resource set. This configuration may be included in the SRS-ResourceSet, e.g., by adding a new field to the SRS-ResourceSet IE. For example, this new field may be an index of the joint / UL TCI state from which the UE should obtain the pathloss offset, or may include an explicit pathloss offset configuration, e.g., a value between -10 dB and 60 dB.
[0069] In other example embodiments, when the SRS resource set is not configured with a TCI state, e.g., followUnifiedTCI-StateSRS in SRS-ResourceSet is not configured, the UE may apply a pathloss offset that is configured by standard, e.g., the 3GPP standards.
[0070] For example, the standards may define that when the SRS resource set is not configured with a TCI state, the UE does not apply pathloss offset. In another example, the standards may define that when the SRS resource set is not configured with a TCI state, the pathloss offset configured in the first indicated joint / UL TCI state is to be applied. In a further example, the standards may define that when the SRS resource set is not configured with a TCI state, the pathloss offset configured in a first MAC-CE activated joint / UL TCI state is to be applied. In an additional example, the standards may define that when the SRS resource set is not configured with a TCI state, the pathloss offset configured in the first RRC configured joint / UL TCI state is to be applied. These are only examples and the standards may define other pathlosses that should be applied in this scenario.
[0071] In some example embodiments, when the SRS resource set is not configured with a TCI state, e.g., followUnifiedTCI-StateSRS in SRS-ResourceSet is not configured, the UE may apply a CLPC index that is separately configured by the network (e.g., base station, gNB, etc. ) . In a first option, the network may configure a CLPC index that is common for all the SRS resource sets that do not have a corresponding TCI state, e.g., as part of the UL serving cell configuration. In a second option, the network may configure the CLPC index separately for each SRS resource set. This configuration may be included in the SRS-ResourceSet, e.g., by adding a new field to the SRS-ResourceSet IE.
[0072] In either option, the CLPC index configuration may be, for example, an explicit configuration of the index, e.g., {i0, i1} . In another example, the CLPC index configuration may be an index to a joint / UL TCI state from which the CLPC adjustment state index in the joint / UL TCI state is to be used. The joint / UL TCI state may be selected from the indicated joint / UL TCI states, the MAC-CE activated joint / UL TCI states, or the RRC configured joint / UL TCI states.
[0073] In other example embodiments, when the SRS resource set is not configured with a TCI state, e.g., followUnifiedTCI-StateSRS in SRS-ResourceSet is not configured, the UE may apply a CLPC index that is configured by standard, e.g., the 3GPP standards.
[0074] For example, the standards may define that when the SRS resource set is not configured with a TCI state, the CLPC adjustment state index is the first one, e.g., i0. In another example, when the SRS resource set is not configured with a TCI state, the CLPC adjustment state index is configured in the first indicated joint / UL TCI state. In a further example, when the SRS resource set is not configured with a TCI state, the CLPC adjustment state index is configured in the first MAC-CE activated joint / UL TCI state. In an additional example, when the SRS resource set is not configured with a TCI state, the CLPC adjustment state index is configured in the first RRC configured joint / UL TCI state. These are only examples and the standards may define other CLPC indexes that should be applied in this scenario.
[0075] Fig. 7 shows an example method 700 for determining a pathloss offset and a CLPC index associated with an SRS resource set that is not associated with a TCI according to various example embodiments. The example method 700 may be performed by the UE 110 when in the asymmetric mTRP scenario of Fig. 4.
[0076] In 710, the UE 110 receives a configuration for an SRS resource set from the serving cell. In 720, the UE 110 may determine that the SRS resource set is not associated with a TCI state, e.g., the followUnifiedTCI-StateSRS in SRS-ResourceSet is not configured.
[0077] In 730, the UE 110 determines a pathloss offset to be applied when transmitting SRS of the SRS resource set to the TRP 420. For example, the pathloss offset may be determined based on information transmitted by the serving cell. This pathloss offset may be specific to the SRS resource set or may be common to all SRS resources sets that are not associated with a TCI state. In other example embodiments, standards (e.g., the 3GPP standards) may define the pathloss offset to be used in this scenario.
[0078] In 740, the UE 110 determines a CLPC index to be applied when transmitting SRS of the SRS resource set to the TRP 420. For example, the CLPC index may be determined based on information transmitted by the serving cell. This CLPC index may be specific to the SRS resource set or may be common to all SRS resources sets that are not associated with a TCI state. In other example embodiments, standards (e.g., the 3GPP standards) may define the CLPC index to be used in this scenario.
[0079] In 750, the UE 110 may transmit SRS associated with the SRS resource set to the TRP 420
[0080] Examples
[0081] In a first example, a method, comprising determining a user equipment (UE) supports a range for a starting block location in Downlink Control Information (DCI) Format 2_3 that is greater than 31 bits and configuring, for transmission to the UE, a DCI Format 2_3 transmission comprising the range for the starting block location that is greater than 31 bits.
[0082] In a second example, the method of the first example, further comprising processing, based on signaling from the UE, UE capability information indicating the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits.
[0083] In a third example, the method of the first example, wherein determining the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits is based on determining the UE is configured with two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) .
[0084] In a fourth example, the method of the first example, wherein determining the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits is based on determining the UE supports two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) .
[0085] In a fifth example, the method of the first example, wherein the DCI Format 2_3 transmission comprising the range for the starting block location that is greater than 31 bits comprises one of a startingBitOfFormat2-3 information element (IE) having the range that is greater than 31 bits or a startingBitOfFormat2-3SUL IE having the range that is greater than 31 bits.
[0086] In a sixth example, the method of the fifth example, further comprising processing, based on signaling from the UE, UE capability information indicating the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits for the startingBitOfFormat2-3 IE or the startingBitOfFormat2-3SUL IE.
[0087] In a seventh example, the method of the first example, further comprising determining whether the UE is configured with one or two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) , wherein, when the UE is configured with one closed-loop power adjustment state, a block in the DCI Format 2_3 corresponding to the UE comprises two bits for a Transmit Power Control (TPC) command for the UE, and when the UE is configured with two closed-loop power adjustment state, a block in the DCI Format 2_3 corresponding to the UE comprises three bits for a closed-loop power control (CLPC) index and a TPC command for the UE.
[0088] In an eighth example, the method of the seventh example, wherein, when the range for the starting block location in DCI Format 2_3 that is greater than 31 bits applies to both one and two close-loop power adjustment states for SRS, and, when each block in DCI Format 2_3 has 2 bits, the range for shared spectrum in Frequency Range 1 (FR1) and Frequency Range 2-2 (FR2-2) is 45 bits and the range for other spectrums is 43 bits when each block is DCI Format 2_3 can only have 2 bits.
[0089] In a ninth example, the method of the seventh example, wherein, when the range for the starting block location in DCI Format 2_3 that is greater than 31 bits applies to only two close-loop power adjustment states for SRS, and, when each block in DCI Format 2_3 has only 3 bits, the range for shared spectrum in Frequency Range 1 (FR1) and Frequency Range 2-2 (FR2-2) is 44 bits and the range for other spectrums is 42 bits.
[0090] In a tenth example, a processor configured to perform any of the methods of the first through ninth examples.
[0091] In an eleventh example, a base station configured to perform any of the methods of the first through ninth examples.
[0092] In a twelfth example, a method, comprising processing, based on signaling received from a serving cell, a Downlink Control Information (DCI) indication to perform a Physical Uplink Random Access Channel (PRACH) procedure with a transmission and reception point (TRP) , wherein the apparatus has an uplink (UL) connection with the TRP but not a downlink (DL) connection and determining whether a pathloss offset is to be applied for the PRACH procedure.
[0093] In a thirteenth example, the method of the twelfth example, wherein the DCI indication comprises a field indicating whether the pathloss offset is to be applied for the PRACH procedure.
[0094] In a fourteenth example, the method of the twelfth example, further comprising processing, based on signaling from the serving cell, two indicated joint / UL Transmission Configuration Indicator (TCI) states and determining whether a Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) index in the indication is quasi-co-located (QCL) with any of the two indicated joint / UL TCI states.
[0095] In a fifteenth example, the method of the fourteenth example, wherein, when the SS / PBCH index is not QCL with any of the two indicated joint / UL TCI states, the processing circuitry determines no pathloss offset is to be applied to the PRACH procedure.
[0096] In a sixteenth example, the method of the fourteenth example, wherein, when the SS / PBCH index is not QCL with any of the two indicated joint / UL TCI states, the processing circuitry applies a pathloss offset to the PRACH procedure based on a value received in a previous configuration.
[0097] In a seventeenth example, the method of the sixteenth example, wherein the previous configuration comprises a radio resource control (RRC) configuration or a Medium Access Control Control Element (MAC-CE) configuration.
[0098] In an eighteenth example, the method of the fourteenth example, wherein, when the SS / PBCH index is QCL with only one of the two indicated joint / UL TCI states, the processing circuitry determines the pathloss offset to be applied to the PRACH procedure is a value associated with the one of the two indicated joint / UL TCI states.
[0099] In a nineteenth example, the method of the fourteenth example, wherein, when the SS / PBCH index is QCL with both of the two indicated joint / UL TCI states, the processing circuitry determines the pathloss offset to be applied to the PRACH procedure is (i) a value associated with either of the two indicated joint / UL TCI states or (ii) a value associated with a predetermined one of the two indicated joint / UL TCI states.
[0100] In a twentieth example, the method of the nineteenth example, wherein the predetermined one of the two indicated joint / UL TCI states is based on an index of the predetermined one of the two indicated joint / UL TCI states or a previously received configuration.
[0101] In a twenty first example, the method of the fourteenth example, wherein the DCI indication further comprises a 1-bit field indicating a value for the pathloss offset from one of the two indicated joint / UL TCI states is to be applied to the PRACH procedure.
[0102] In a twenty second example, the method of the fourteenth example, wherein the DCI indication further comprises a 2-bit field indicating whether the pathloss offset is to be applied to the PRACH procedure and, when the pathloss offset value is to be applied, a value for the pathloss offset from one of the two indicated joint / UL TCI states to be applied to the PRACH procedure.
[0103] In a twenty third example, the method of the twelfth example, wherein the DCI indication comprises a DCI Format 1_0.
[0104] In a twenty fourth example, a processor configured to perform any of the methods of the twelfth through twenty third examples.
[0105] In a twenty fifth example, a user equipment (UE) configured to perform any of the methods of the twelfth through twenty third examples.
[0106] In a twenty sixth example, a method, comprising processing, based on signaling received from a serving cell, a configuration for a sounding reference signal (SRS) resource set, determining the SRS resource set is not associated with a transmission configuration indicator (TCI) , determining a pathloss offset to be applied to transmitting SRS of the SRS resource set and determining a closed-loop power control (CLPC) index to the applied to transmitting SRS of the SRS resource set.
[0107] In a twenty seventh example, the method of the twenty sixth example, further comprising processing, based on signaling received from the serving cell, a separate configuration, wherein the pathloss offset is determined based on the separate configuration.
[0108] In a twenty eighth example, the method of the twenty seventh example, wherein the separate configuration comprises a pathloss offset that is a common for all SRS resource sets not associated with a TCI.
[0109] In a twenty ninth example, the method of the twenty eighth example, wherein the pathloss offset comprises one of no pathloss offset, the pathloss offset from one of indicated joint / uplink (UL) TCI states, the pathloss offset from one of Medium Access Control Control Element (MAC-CE) activated joint / UL TCI states, or the pathloss offset from one of radio resource control (RRC) configured joint / UL TCI states.
[0110] In a thirtieth example, the method of the twenty sixth example, wherein the configuration for the SRS resource set comprises an indication of the pathloss offset.
[0111] In a thirty first example, the method of the thirtieth example, wherein the indication of the pathloss offset comprises (i) an indication of an index of a joint / UL TCI state comprising the pathloss offset, or (ii) a value for the pathloss offset.
[0112] In a thirty second example, the method of the twenty sixth example, wherein the pathloss offset is determined to be one of (i) no pathloss offset, (ii) the pathloss offset configured in a first indicated joint / UL TCI state, (iii) the pathloss offset configured in a first MAC-CE activated joint / UL TCI state, or (iv) the pathloss offset configured in a first RRC configured joint / UL TCI state.
[0113] In a thirty third example, the method of the twenty sixth example, further comprising processing, based on signaling received from the serving cell, a separate configuration, wherein the CLPC index is determined based on the separate configuration.
[0114] In a thirty fourth example, the method of the thirty third example, wherein the separate configuration comprises a CLPC index that is a common for all SRS resource sets not associated with a TCI.
[0115] In a thirty fifth example, the method of the thirty third example, wherein the separate configuration comprises (i) an index value for the CLPC index, (ii) an identification of one of indicated joint / UL TCI states providing the CLPC index, (iii) an identification of one of MAC-CE activated joint / UL TCI states providing the CLPC index, or (iv) an identification of one of RRC configured joint / UL TCI states providing the CLPC index.
[0116] In a thirty sixth example, the method of the twenty sixth example, wherein the configuration for the SRS resource set comprises an indication of the CLPC index.
[0117] In a thirty seventh example, the method of the thirty sixth example, wherein the an indication comprises (i) an index value for the CLPC index, (ii) an identification of one of indicated joint / UL TCI states providing the CLPC index, (iii) an identification of one of MAC-CE activated joint / UL TCI states providing the CLPC index, or (iv) an identification of one of RRC configured joint / UL TCI states providing the CLPC index.
[0118] In a thirty eighth example, the method of the twenty sixth example, wherein the CLPC index is determined to be one a lowest CLPC index, (ii) the CLPC index in a first indicated joint / UL TCI state, (iii) the CLPC index in a first MAC-CE activated joint / UL TCI state, or (iv) the CLPC index in a first RRC configured joint / UL TCI state.
[0119] In a thirty ninth example, a processor configured to perform any of the methods of the twenty sixth through thirty eighth examples.
[0120] In a fortieth example, a user equipment (UE) configured to perform any of the methods of the twenty sixth through thirty eighth examples.
[0121] Those skilled in the art will understand that the above-described example embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An example hardware platform for implementing the example embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Windows OS, a Mac platform and MAC OS, a mobile device having an operating system such as iOS, Android, etc. The example embodiments described above may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor.
[0122] In some embodiments, a non-transitory computer-readable memory medium (e.g., a non-transitory memory element) may be configured so that it stores program instructions and / or data, where the program instructions, if executed by a computer system, cause the computer system to perform a method, e.g., any of a method embodiments described herein, or, any combination of the method embodiments described herein, or, any subset of any of the method embodiments described herein, or, any combination of such subsets.
[0123] In some embodiments, a device (e.g., a UE) may be configured to include a processor (or a set of processors) and a memory medium (or memory element) , where the memory medium stores program instructions, where the processor is configured to read and execute the program instructions from the memory medium, where the program instructions are executable to implement any of the various method embodiments described herein (or, any combination of the method embodiments described herein, or, any subset of any of the method embodiments described herein, or, any combination of such subsets) . The device may be realized in any of various forms.
[0124] Embodiments of the present invention may be realized in any of various forms. For example, in some embodiments, the present invention may be realized as a computer-implemented method, a computer-readable memory medium, or a computer system. In other embodiments, the present invention may be realized using one or more custom-designed hardware devices such as ASICs. In other embodiments, the present invention may be realized using one or more programmable hardware elements such as FPGAs.
[0125] Although this application described various embodiments each having different features in various combinations, those skilled in the art will understand that any of the features of one embodiment may be combined with the features of the other embodiments in any manner not specifically disclaimed or which is not functionally or logically inconsistent with the operation of the device or the stated functions of the disclosed embodiments.
[0126] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
[0127] It will be apparent to those skilled in the art that various modifications may be made in the present disclosure, without departing from the spirit or the scope of the disclosure. Thus, it is intended that the present disclosure cover modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalent.
Claims
1.An apparatus comprising processing circuitry configured to:determine a user equipment (UE) supports a range for a starting block location in Downlink Control Information (DCI) Format 2_3 that is greater than 31 bits; andconfigure, for transmission to the UE, a DCI Format 2_3 transmission comprising the range for the starting block location that is greater than 31 bits.2.The apparatus of claim 1, wherein the processing circuitry is further configured to:process, based on signaling from the UE, UE capability information indicating the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits.3.The apparatus of claim 1, wherein determining the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits is based on the processing circuitry being configured to:determine the UE is configured with two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) .4.The apparatus of claim 1, wherein determining the UE supports the range for the starting block location in DCI Format 2_3 that is greater than 31 bits is based on the processing circuitry being configured to:determine the UE supports two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) .5.The apparatus of claim 1, wherein the DCI Format 2_3 transmission comprising the range for the starting block location that is greater than 31 bits comprises one of a startingBitOfFormat2-3 information element (IE) having the range that is greater than 31 bits or a startingBitOfFormat2-3SUL IE having the range that is greater than 31 bits.6.The apparatus of claim 1, wherein the processing circuitry is further configured to:determine whether the UE is configured with one or two closed-loop power adjustment states for sounding reference signals (SRS) that are both separate from a Physical Uplink Shared Channel (PUSCH) , wherein,when the UE is configured with one closed-loop power adjustment state, a block in the DCI Format 2_3 corresponding to the UE comprises two bits for a Transmit Power Control (TPC) command for the UE, andwhen the UE is configured with two closed-loop power adjustment state, a block in the DCI Format 2_3 corresponding to the UE comprises three bits for a closed-loop power control (CLPC) index and a TPC command for the UE.7.An apparatus comprising processing circuitry configured to:process, based on signaling received from a serving cell, a Downlink Control Information (DCI) indication to perform a Physical Uplink Random Access Channel (PRACH) procedure with a transmission and reception point (TRP) , wherein the apparatus has an uplink (UL) connection with the TRP but not a downlink (DL) connection; anddetermine whether a pathloss offset is to be applied for the PRACH procedure.8.The apparatus of claim 7, wherein the DCI indication comprises a field indicating whether the pathloss offset is to be applied for the PRACH procedure.9.The apparatus of claim 7, wherein the processing circuitry is further configured to:process, based on signaling from the serving cell, two indicated joint / UL Transmission Configuration Indicator (TCI) states; anddetermine whether a Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) index in the indication is quasi-co-located (QCL) with any of the two indicated joint / UL TCI states.10.The apparatus of claim 9, wherein, when the SS / PBCH index is not QCL with any of the two indicated joint / UL TCI states, the processing circuitry determines no pathloss offset is to be applied to the PRACH procedure.11.The apparatus of claim 9, wherein, when the SS / PBCH index is not QCL with any of the two indicated joint / UL TCI states, the processing circuitry applies a pathloss offset to the PRACH procedure based on a value received in a previous configuration.12.The apparatus of claim 9, wherein, when the SS / PBCH index is QCL with only one of the two indicated joint / UL TCI states, the processing circuitry determines the pathloss offset to be applied to the PRACH procedure is a value associated with the one of the two indicated joint / UL TCI states.13.The apparatus of claim 9, wherein, when the SS / PBCH index is QCL with both of the two indicated joint / UL TCI states, the processing circuitry determines the pathloss offset to be applied to the PRACH procedure is (i) a value associated with either of the two indicated joint / UL TCI states or (ii) a value associated with a predetermined one of the two indicated joint / UL TCI states.14.The apparatus of claim 9, wherein the DCI indication further comprises a 1-bit field indicating a value for the pathloss offset from one of the two indicated joint / UL TCI states is to be applied to the PRACH procedure.15.The apparatus of claim 9, wherein the DCI indication further comprises a 2-bit field indicating whether the pathloss offset is to be applied to the PRACH procedure and, when the pathloss offset value is to be applied, a value for the pathloss offset from one of the two indicated joint / UL TCI states to be applied to the PRACH procedure.16.An apparatus comprising processing circuitry configured to:process, based on signaling received from a serving cell, a configuration for a sounding reference signal (SRS) resource set;determine the SRS resource set is not associated with a transmission configuration indicator (TCI) ;determine a pathloss offset to be applied to transmitting SRS of the SRS resource set; anddetermine a closed-loop power control (CLPC) index to the applied to transmitting SRS of the SRS resource set.17.The apparatus of claim 16, wherein the processing circuitry is further configured to:process, based on signaling received from the serving cell, a separate configuration, wherein the pathloss offset is determined based on the separate configuration.18.The apparatus of claim 17, wherein the separate configuration comprises a pathloss offset that is a common for all SRS resource sets not associated with a TCI.19.The apparatus of claim 18, wherein the pathloss offset comprises one of no pathloss offset, the pathloss offset from one of indicated joint / uplink (UL) TCI states, the pathloss offset from one of Medium Access Control Control Element (MAC-CE) activated joint / UL TCI states, or the pathloss offset from one of radio resource control (RRC) configured joint / UL TCI states.20.The apparatus of claim 16, wherein the configuration for the SRS resource set comprises an indication of the pathloss offset.
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