Patent Description:
Aspects of the present disclosure relate generally to communication systems, and more particularly, to techniques for signaling uplink transmission configuration indicator (TCI) states.

An example telecommunication standard is fifth generation (<NUM>) new radio (NR) technologies. <NUM> NR technologies are a part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. <NUM> NR technologies include services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra reliable low latency communications (URLLC). Some aspects of <NUM> NR technologies may be based on the fourth generation (<NUM>) Long Term Evolution (LTE) standard.

During beam management, different schemes, including space division multiplexing (SDM) schemes, frequency division multiplexing (FDM) schemes, or time division multiplexing (TDM) schemes, may be used across multiple transmission and reception points. These schemes may allow for a more unified TCI framework for downlink (DL) and uplink (UL) beam indication. While wireless networks provide signaling for configuring DL transmissions according to the different schemes, these wireless networks do not provide signaling for configuring the UL transmissions based on the schemes. Accordingly, there exists a need for further improvements in <NUM> NR technologies. Relatedly, document <CIT> describes UL beam indication, documents 3GPP R1-<NUM> and 3GPP R1-<NUM> describe multi-beam enhancements, and document 3GPP R1-<NUM> describes multi-transmit-receive-point (TRP) enhancements.

Embodiments and aspects that do not fall within the scope of the claims are merely examples used for explanation of the invention.

The detailed description, set forth below, in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced.

Enhancements to multi-beam operations, such as frequency range <NUM> (FR2) and frequency range <NUM> (FR1), may include identifying and specifying features to facilitate more efficient (e.g., lower latency and overhead) downlink (DL) / uplink (UL) beam management to support higher intra-cell mobility and layer <NUM> (L1) / layer <NUM> (L2)-centric inter-cell mobility and/or a larger number of configured transmission configuration indicator (TCI) states. These features may include: common beams for data and control transmission/reception for DL and UL transmissions, especially for intra-band carrier aggregation (CA); unified TCI framework for DL/UL beam indication; and enhancements on signaling mechanisms for the above features to improve latency and efficiency, such as more dynamic usage of control signalling, as opposed to radio resource control (RRC) signals.

The enhancements may also include identifying and specifying features to facilitate UL beam selection for user equipments (UEs) equipped with multiple panels including: UL beam indications based on the unified TCI framework; enabling simultaneous transmission across multiple panels (STxMP); and/or enabling panel selection. The enhancements may also include studying UE-initiated or L1-event-driven beam management for reducing latency and probability of beam failure events.

Additionally, enhancements for the support of multi-transmission and reception points (mTRPs) deployment, which may target both FR1 and FR2, may include identifying and specifying features to improve reliability and robustness for channels other than physical DL share channel (PDSCH), such as physical DL control channel (PDCCH), physical UL share channel (PUSCH), and physical UL control channel (PUCCH) using mTRPs and/or multi-panels, with reliability features used as a baseline. These enhancements may also include identifying and specifying features to enable inter-cell multi-TRP operations. These enhancements may also include evaluating and, if needed, specifying enhancements for simultaneous multi-TRP transmission with multi-panel reception.

For UL transmissions, space division multiplexing (SDM) / frequency division multiplexing (FDM) / time division multiplexing (TDM) schemes across mTRPs may also be extended. By using these schemes for UL transmissions, a more unified TCI framework for DL and UL beam indication may be achieved. Alternatively, introduction of a UL-TCI framework and support for UL-TCI based signalling analogous to DL beam indication may be considered to support multi-panel enhancements for UL. In the context of a DL, the schemes are supported as follows: scheme <NUM> - SDM; scheme 2a - FDM and one control word (CW); scheme 2b - FDM and two CWs of the same transport block (TB); scheme <NUM> - TDM within a slot; and scheme <NUM> - TDM in different slots. These schemes may be extended for UL.

According to aspects of the present disclosure, multiple UL TCI states may be used to indicate UL transmissions. In an example, the multiple TCI states may be based on one or more SDM schemes, FDM schemes, or TDM schemes across indicated UL TCI states.

In another aspect, multiple UL TCI states may be mapped to a single UL TCI codepoint of a DL configuration indicator (DCI) that is scheduling a UL transmission. The multiple UL TCI states may be indicated through signalling, such as one or more of a DCI signal, a media access control - control element (MAC-CE) signal, or a radio resource control (RRC) signal. In some examples, the multiple UL TCI states are mapped to a single DCI based UL mTRP transmission.

In an aspect, multiple UL TCI states can be mapped to one composite mTRP UL TCI state in a DCI that is scheduling a UL transmission. The indication of these multiple UL TCI states may be signalled via, for example, a DCI signal, a MAC-CE signal, or an RRC signal. In an example, UL transmissions may include one or more sound reference signal (SRS), PUCCH signal, PUSCH signal, or PRACH signal.

In case of SDM, UL signals indicated by UL TCI states may be transmitted simultaneously in overlapped frequency resources. In case of FDM, UL signals indicated by UL TCI states may be transmitted simultaneously in non-overlapped frequency resources. In case of TDM, UL signals indicated by UL TCI states may be transmitted in different time resources, either slot or sub-slot based TDM.

In another aspect, at least one UL TCI codepoint is mapped to multiple UL TCI states. For example, multiple UL TCI states may be mapped to a single DCI based on a UL mTRP operation mode. However, when a UE receives an indication of the multiple UL TCI states, the UE may be unable to use some of the UL TCI states due to, for example, a UL TCI state not being configured (e.g., when a relation or UL TCI is not indicated for certain resources or when a scheduled UL transmission is within a time-domain scheduling threshold). Accordingly, a default UL beam of SRS, PUCCH, PUSCH, or PRACH, may be used based on the previously used TCI codepoint. In an example, the UL beam may rely on a lowest index or a highest index of previously used UL TCI codepoint or rely on a recent successfully used TCI codepoint.

Turning now to the figures, examples of techniques for signaling UL TCI states are depicted. It is to be understood that aspects of the figures may not be drawn to scale and are instead drawn for illustrative purposes.

Referring to <FIG>, a diagram illustrating an example of a wireless communications system and an access network <NUM> is provided. The wireless communications system (also referred to as a wireless wide area network (WWAN)) includes base stations <NUM>, UEs <NUM>, an Evolved Packet Core (EPC) <NUM>, and a <NUM> Core (5GC) <NUM>.

The base station <NUM> may include a modem <NUM> having a TCI signaling component <NUM> configured to signal to the UE <NUM> multiple TCI states and a codepoint indicating the multiple TCI states. For example, the TCI signaling component <NUM> may determine one or more capabilities of the UE <NUM>, determine one or more UL TCI states for the UE <NUM> to use based on the one or more capabilities, and transmit, to the UE <NUM>, signaling of the one or more UL TCI states.

In another example, the TCI signaling component <NUM> may transmit, to the UE <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states, receive, from the UE <NUM> in response to the transmitting the signaling, UL transmissions based on one or more second UL TCI states of a default UL TCI codepoint, determine, based on the received UL transmissions, that the one or more first UL TCI states of the first codepoint were not configured for UL transmissions, and store an indication that the one or more first UL TCI states are not configured by the UE <NUM> for the UL transmissions.

The UE <NUM> may include a modem <NUM> having a UL configuration component <NUM> configured to receive signaling from the base station <NUM> and transmit a UL transmission based on the signaling. For example, the UL configuration component <NUM> may receive, from the base station <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states, determine that the one or more first UL TCI states of the first UL TCI codepoint are not configured for UL transmissions, determine, in response to the one or more first UL TCI states not being configured, one or more second UL TCI states of a default UL TCI codepoint that are configured for the UL transmissions, and transmit, to the base station, the UL transmissions based on the one or more second UL TCI states.

In another example, the UL configuration component <NUM> may receive, from a base station <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states, determine that the one or more first UL TCI states of the first UL TCI codepoint are not configured for UL transmissions, determine, in response to the one or more first UL TCI states not being configured, one or more second UL TCI states of a default UL TCI codepoint that are configured for the UL transmissions, and transmit, to the base station, the UL transmissions based on the one or more second UL TCI states.

In an aspect, the base stations <NUM> may include macro cells (high power cellular base station) and/or small cells (low power cellular base station).

The base stations <NUM> configured for <NUM> LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC <NUM> through backhaul links <NUM> (e.g., S1 interface). The base stations <NUM> configured for <NUM> NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with 5GC <NUM> through backhaul links <NUM>. The base stations <NUM> may communicate directly or indirectly (e.g., through the EPC <NUM> or 5GC <NUM>) with each other over backhaul links <NUM> (e.g., X2 interface). Each of the backhaul links <NUM>, <NUM>, and <NUM> may be wired or wireless.

A network that includes both small cell and macro cells may be known as a heterogeneous network. The communication links <NUM> between the base stations <NUM> and the UEs <NUM> may include UL (also referred to as reverse link) transmissions from a UE <NUM> to a base station <NUM> and/orDL (also referred to as forward link) transmissions from a base station <NUM> to a UE <NUM>. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or less carriers may be allocated for DL than for UL).

A base station <NUM>, whether a small cell <NUM>' or a large cell (e.g., macro base station), may include an eNB, gNodeB (gNB), or other type of base station.

The 5GC <NUM> may include a Access and Mobility Management Function (AMF) <NUM>, other AMFs <NUM>, a Session Management Function (SMF) <NUM>, and a User Plane Function (UPF) <NUM>. The AMF <NUM> is the control node that processes the signaling between the UEs <NUM> and the 5GC <NUM>.

The base station <NUM> may also be referred to as a gNB, Node B, evolved Node B (eNB), an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. The base station <NUM> provides an access point to the EPC <NUM> or 5GC <NUM> for a UE <NUM>.

Referring to <FIG> and <FIG>, example methods <NUM> and <NUM> of wireless communications are disclosed. The methods <NUM> and <NUM> may be performed by the UE <NUM> of <FIG> along with any of the components (see e.g., <FIG>) of the UE <NUM>. For example, the methods <NUM> and <NUM> may be performed by one or more of a processor <NUM>, a transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more additional components/subcomponents of the UE <NUM>.

Turning to <FIG>, at <NUM>, the method <NUM> may optionally include transmitting, to the base station, an indication of one or more capabilities of the UE. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to transmit, to the base station <NUM>, an indication of one or more capabilities of the UE <NUM>. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for transmitting, to the base station <NUM>, an indication of one or more capabilities of the UE <NUM>. In an example, the one or more capabilities of the UE <NUM> may include, for example, capabilities of the UE <NUM> to support multiple transmissions from multiple panels of a base station <NUM> or capabilities of the UE <NUM> to support a switching time to activate transmissions between panels of the base station <NUM>.

At <NUM>, the method <NUM> includes receiving, from a base station, signaling indicating one or more UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to receive, from the base station <NUM>, signaling indicating one or more UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for receiving, from the base station <NUM>, signaling indicating one or more UL TCI states. In an example, the signaling indicating the one or more UL TCI states is indicated via a mapping of the one or more UL TCI states to a single UL TCI codepoint. In an example, the signaling may be received via one or more of a DCI signal, a MAC-CE signal, or an RRC signal. In an example, the signaling may indicate the one or more UL TCI states via a mapping of the one or more UL TCI states to a single composite mTRP UL TCI state.

In an example, the one or more UL TCI states may be based on one or more of an SDM scheme, an FDM scheme, or a TDM scheme. When the one or more UL TCI states are based on the SDM scheme, the UL transmissions may be transmitted simultaneously in overlapped frequency resources. When the one or more UL TCI states are based on the FDM scheme, the UL transmissions may be transmitted simultaneously in non-overlapped frequency resources. When the one or more UL TCI states are based on the TDM scheme, the UL transmissions may be transmitted in different time resources.

At <NUM>, the method <NUM> may include receiving, from the base station, signaling indicating a codepoint that schedules the one or more of the UL transmissions. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to receive, from the base station <NUM>, signaling indicating a codepoint that schedules the one or more of the UL transmissions. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for receiving, from the base station <NUM>, signaling indicating a codepoint that schedules the one or more of the UL transmissions. In an example, the codepoint is a code, a string, or one or more bits of a DCI signal. In an example, the UL transmissions are one or more of a SRS, a PUCCH, a PUSCH, or a PRACH.

At <NUM>, the method <NUM> includes configuring, based on the signaling indicating the one or more UL TCI states, the one or more UL TCI states to be used by the UE for UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to configure, based on the signaling indicating the one or more UL TCI states, the one or more UL TCI states to be used by the UE <NUM> for UL transmissions. Thus, the processor <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for configuring, based on the signaling indicating the one or more UL TCI states, the one or more UL TCI states to be used by the UE <NUM> for UL transmissions. In an example, the determining of the one or more UL TCI states may be further based on the signaling indicating the codepoint. In an example, the one or more UL TCI states may be configured based on configuring one or more spatial relations parameters of one or more beams and using ports or signals that satisfy quasi co-location (QCL) properties as indicated by the TCI state for the UL transmission in scheduled time/frequency resources.

At <NUM>, the method <NUM> includes transmitting, to the base station, the UL transmissions based on the one or more UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to transmit, to the base station <NUM>, the UL transmissions based on the one or more UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for transmitting, to the base station <NUM>, the UL transmissions based on the one or more UL TCI states.

Turning to <FIG>, which is useful for an understanding of the invention, at <NUM>, the method <NUM> may include receiving, from a base station, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to receive, from the base station <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states. Thus, the processor <NUM>, the transceiver, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for receiving, from a base station <NUM>, signaling indicating the first UL TCI codepoint mapped to one or more first UL TCI states.

At <NUM>, the method <NUM> may include determining that the one or more first UL TCI states of the first UL TCI codepoint are not configured for UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to determine that the one or more first UL TCI states of the first UL TCI codepoint are not configured for UL transmissions. Thus, the processor <NUM>, the transceiver, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for determining that the one or more first UL TCI states of the first UL TCI codepoint are not configured for UL transmissions.

At <NUM>, the method <NUM> may include determining, in response to the one or more first UL TCI states not being configured, one or more second UL TCI states of a default UL TCI codepoint that are configured for the UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to determine, in response to the one or more first UL TCI states not being configured, one or more second UL TCI states of a default UL TCI codepoint that are configured for the UL transmissions. Thus, the processor <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for determining, in response to the one or more first UL TCI states not being configured, one or more second UL TCI states of a default UL TCI codepoint that are configured for the UL transmissions.

At <NUM>, the method <NUM> may include transmitting, to the base station, the UL transmissions based on the one or more second UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may be configured to transmit, to the base station <NUM>, the UL transmissions based on the one or more second UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the UL configuration component <NUM>, and/or one or more components/subcomponents of the UE <NUM> may define the means for transmitting, to the base station <NUM>, the UL transmissions based on the one or more second UL TCI states.

Referring to <FIG>, one example of an implementation of the UE <NUM> may include a variety of components, some of which have already been described above, but including components such as one or more processors <NUM>, memory <NUM>, and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with the modem <NUM> to enable one or more of the functions of the methods <NUM> and <NUM> described herein. The one or more processors <NUM>, modem <NUM>, memory <NUM>, the transceiver <NUM>, RF front end <NUM> and one or more antennas <NUM>, may be configured to support voice and/or data calls (simultaneously or non-simultaneously) in one or more radio access technologies.

In an aspect, the one or more processors <NUM> may include the modem <NUM> that uses one or more modem processors. The various functions related to the UL configuration component <NUM> may be included in the modem <NUM> and/or the processors <NUM> and, in an aspect, may be executed by a single processor, while in other aspects, different ones of the functions may be executed by a combination of two or more different processors. For example, in an aspect, the one or more processors <NUM> may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with the transceiver <NUM>. In other aspects, some of the features of the one or more processors <NUM> and/or the modem <NUM> may be performed by the transceiver <NUM>.

Also, the memory <NUM> may be configured to store data used herein and/or local versions of applications <NUM> or the UL configuration component <NUM> and/or one or more of its subcomponents being executed by the at least one processors <NUM>. The memory <NUM> may include any type of computer-readable medium usable by a computer or the at least one processor <NUM>, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, nonvolatile memory, and any combination thereof. In an aspect, for example, the memory <NUM> may be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining the UL configuration component <NUM> and/or one or more of its subcomponents, and/or data associated therewith, when the UE <NUM> is operating the at least one processor <NUM> to execute the UL configuration component <NUM> and/or one or more of its subcomponents.

The transceiver <NUM> may include at least one receiver <NUM> and at least one transmitter <NUM>. The receiver <NUM> may include hardware, firmware, and/or software code executable by a processor for receiving data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium). The receiver <NUM> may be, for example, a radio frequency (RF) receiver. In an aspect, the receiver <NUM> may receive signals transmitted by at least one of the base stations <NUM>. Additionally, the receiver <NUM> may process such received signals, and also may obtain measurements of the signals, such as, but not limited to, Ec/Io, SNR, RSRP, RSSI, etc. The transmitter <NUM> may include hardware, firmware, and/or software code executable by a processor for transmitting data, the code comprising instructions and being stored in a memory (e.g., computer-readable medium). A suitable example of the transmitter <NUM> may include, but is not limited to, an RF transmitter. The transceiver <NUM>, receiver <NUM>, and/or transmitter <NUM> may be configured to operate in mmW frequencies and/or near mmW frequencies.

Moreover, in an aspect, the UE <NUM> may include the RF front end <NUM>, which may operate in communication with one or more antennas <NUM> and the transceiver <NUM> for receiving and transmitting radio transmissions, for example, wireless communications transmitted by at least one of the base stations <NUM> or wireless transmissions transmitted by the UE <NUM>. The RF front end <NUM> may be connected to the one or more antennas <NUM> and may include one or more low-noise amplifiers (LNAs) <NUM>, one or more switches <NUM>, one or more power amplifiers (PAs) <NUM>, and one or more filters <NUM> for transmitting and receiving RF signals.

In an aspect, the LNA <NUM> may amplify a received signal at a desired output level. In an aspect, each of the LNAs <NUM> may have a specified minimum and maximum gain values. In an aspect, the RF front end <NUM> may use the one or more switches <NUM> to select a particular LNA <NUM> and its specified gain value based on a desired gain value for a particular application.

The one or more PA(s) <NUM> may be used by the RF front end <NUM> to amplify a signal for an RF output at a desired output power level. In an aspect, each of the PAs <NUM> may have specified minimum and maximum gain values. In an aspect, the RF front end <NUM> may use the one or more switches <NUM> to select a particular PA <NUM> and its specified gain value based on a desired gain value for a particular application.

Also, for example, the one or more filters <NUM> may be used by the RF front end <NUM> to filter a received signal to obtain an input RF signal. Similarly, in an aspect, for example, a respective filter <NUM> may be used to filter an output from a respective PA <NUM> to produce an output signal for transmission. In an aspect, each of the filters <NUM> may be connected to a specific LNA <NUM> and/or PA <NUM>. In an aspect, the RF front end <NUM> may use the one or more switches <NUM> to select a transmit or receive path using a specified filter <NUM>, LNA <NUM>, and/or PA <NUM>, based on a configuration as specified by the transceiver <NUM> and/or the processor <NUM>.

As such, the transceiver <NUM> may be configured to transmit and receive wireless signals through the one or more antennas <NUM> via the RF front end <NUM>. In an aspect, the transceiver <NUM> may be tuned to operate at specified frequencies such that the UE <NUM> may communicate with, for example, one or more of the base stations <NUM> or one or more cells associated with one or more of the base stations <NUM>. In an aspect, for example, the modem <NUM> may configure the transceiver <NUM> to operate at a specified frequency and power level based on the UE configuration of the UE <NUM> and the communication protocol used by the modem <NUM>.

In an aspect, the modem <NUM> may be a multiband-multimode modem, which may process digital data and communicate with the transceiver <NUM> such that the digital data is sent and received using the transceiver <NUM>. In an aspect, the modem <NUM> may be multiband and be configured to support multiple frequency bands for a specific communications protocol. In an aspect, the modem <NUM> may be multimode and be configured to support multiple operating networks and communications protocols. In an aspect, the modem <NUM> may control one or more components of the UE <NUM> (e.g., RF front end <NUM>, transceiver <NUM>) to enable transmission and/or reception of signals from the network based on a specified modem configuration. In an aspect, the modem configuration may be based on the mode of the modem <NUM> and the frequency band in use. In another aspect, the modem configuration may be based on UE configuration information associated with the UE <NUM> as provided by the network during cell selection and/or cell reselection.

Referring to <FIG> and <FIG>, example methods <NUM> and <NUM> of wireless communications are disclosed. The methods <NUM> and <NUM> may be performed by the base station <NUM> of <FIG> along with any of the components (see e.g., <FIG>) of the base station <NUM>. For example, the methods <NUM> and <NUM> may be performed by one or more of the a processor <NUM>, a transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more additional components/subcomponents of the base station <NUM>.

Turning to <FIG>, at <NUM>, the method <NUM> may optionally include receiving, from a UE, an indication of the one or more capabilities of the UE. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to receive, from the UE <NUM>, an indication of the one or more capabilities of the UE <NUM>. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for receiving, from the UE <NUM>, an indication of the one or more capabilities of the UE <NUM>. In an example, the one or more capabilities of the UE <NUM> may include, for example, capabilities of the UE <NUM> to support multiple transmissions from multiple panels of a base station <NUM> or capabilities of the UE <NUM> to support a switching time to activate transmissions between panels of the base station <NUM>.

At <NUM>, the method <NUM> includes determining one or more capabilities of a UE. For example, one or more of the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to determine one or more capabilities of the UE <NUM>. Thus, the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for determining one or more capabilities of the UE <NUM>. In an example, the one or more capabilities of the UE <NUM> may be determined based on the received indication of the capabilities from the UE <NUM>. In another example, the one or more capabilities of the UE <NUM> may be determined based on stored data indicating the capabilities.

At <NUM>, the method <NUM> includes determining one or more UL TCI states for the UE to use based on the one or more capabilities. For example, one or more of the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to determine the one or more UL TCI states for the UE <NUM> to use based on the one or more capabilities. Thus, the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for determining the one or more UL TCI states for the UE <NUM> to use based on the one or more capabilities. In an example, the one or more UL TCI states may be based on one or more of an SDM scheme, an FDM scheme, or a TDM scheme. In an example, the base station <NUM> may determine one or more UL TCI states for the UE <NUM> based on capabilities of the UE <NUM> that allow mapping of multiple UL TCI states to a same codepoint. These capabilities may include, for example, the UE <NUM> supporting simultaneously transmitting (e.g., on UE <NUM> side) from multiple panels (e.g., as in SDM), the UE <NUM> supporting the timing of switching between different beams for back-to-back UL transmissions (e.g., as in TDM), or the UE <NUM> supporting multiple beams (e.g., TCI states) being transmitted simultaneously from the same panel but different resource blocks (RBs) (e.g., as in FDM).

At <NUM>, the method <NUM> includes transmitting, to the UE, signaling of the one or more UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to transmit, to the UE <NUM>, the signaling of the one or more UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for transmitting, to the UE <NUM>, the signaling of the one or more UL TCI states. In an example, the signaling of the one or more UL TCI states is transmitted via one or more of a DCI signal, an MAC-CE signal, or an RRC signal.

At <NUM>, the method <NUM> may optionally include mapping the one or more UL TCI states to a codepoint of a signal that schedules one or more UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to map the one or more UL TCI states to a codepoint of a signal that schedules one or more UL transmissions. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for mapping the one or more UL TCI states to a codepoint of a signal that schedules one or more UL transmissions. In an example, the codepoint may be a code, a string, or one or more bits of a DCI signal.

At <NUM>, the method <NUM> may include transmitting, to the UE, signaling indicating the codepoint. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to transmit, to the UE <NUM>, signaling indicating the codepoint. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for transmitting, to the UE <NUM>, signaling indicating the codepoint.

At <NUM>, the method <NUM> may optionally include receiving, from the UE, an UL transmission in response to the signaling, wherein the UL transmission is based on the one or more UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to receive, from the UE <NUM>, an UL transmission in response to the signaling, wherein the UL transmission is based on the one or more UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for receiving, from the UE <NUM>, an UL transmission in response to the signaling, wherein the UL transmission is based on the one or more UL TCI states.

Turning to <FIG>, which is useful for an understanding of the invention, at <NUM>, the method <NUM> may include transmitting, to a UE, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to transmit, to the UE <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for transmitting, to the UE <NUM>, signaling indicating a first UL TCI codepoint mapped to one or more first UL TCI states. In an example, the one or more UL TCI states may be based on one or more of an SDM scheme, an FDM scheme, or a TDM scheme. In an example, the codepoint is a code, a string, or one or more bits of a DCI signal.

At <NUM>, the method <NUM> may include receiving, from the UE in response to the transmitting the signaling, UL transmissions based on one or more second UL TCI states of a default UL TCI codepoint. For example, one or more of the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to receive, from the UE <NUM> in response to the transmitting the signaling, UL transmissions based on one or more second UL TCI states of a default UL TCI codepoint. Thus, the processor <NUM>, the transceiver <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for receiving, from the UE <NUM> in response to the transmitting the signaling, UL transmissions based on one or more second UL TCI states of a default UL TCI codepoint.

At <NUM>, the method <NUM> may also include determining, based on the received UL transmissions, that the one or more first UL TCI states of the first codepoint were not configured for UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to determine, based on the received UL transmissions, that the one or more first UL TCI states of the first codepoint were not configured for UL transmissions. Thus, the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for determining, based on the received UL transmissions, that the one or more first UL TCI states of the first codepoint were not configured for UL transmissions. In an example, the first UL TCI states may not have been configured for UL transmissions based on the one or more first UL TCI states not being ready in time for the UL transmissions. In an example, the first UL TCI states may not have been configured for UL transmissions based on the one or more first UL TCI states being received by the UE <NUM> within a time-domain scheduling threshold.

At <NUM>, the method <NUM> may also include storing an indication that the one or more first UL TCI states are not configured by the UE for the UL transmissions. For example, one or more of the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM> and/or one or more components/subcomponents of the base station <NUM> may be configured to storing an indication that the one or more first UL TCI states are not configured by the UE <NUM> for the UL transmissions. Thus, the processor <NUM>, the modem <NUM>, the TCI signaling component <NUM>, and/or one or more components/subcomponents of the base station <NUM> may define the means for storing an indication that the one or more first UL TCI states are not configured by the UE <NUM> for the UL transmissions.

Referring to <FIG>, one example of an implementation of base station <NUM> may include a variety of components, some of which have already been described above, but including components such as one or more processors <NUM>, memory <NUM> and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with modem <NUM> and the TCI signaling component <NUM> to enable one or more of the functions of the methods <NUM> and <NUM> described herein.

The transceiver <NUM>, receiver <NUM>, transmitter <NUM>, one or more processors <NUM>, memory <NUM>, applications <NUM>, buses <NUM>, RF front end <NUM>, LNAs <NUM>, switches <NUM>, filters <NUM>, PAs <NUM>, and one or more antennas <NUM> may be the same as or similar to the corresponding components of the UE <NUM>, as described above, but configured or otherwise programmed for base station operations as opposed to UE operations.

For example, due to the nature of software, functions described above may be implemented using software executed by a specially programmed processor, hardware, firmware, hardwiring, or combinations of any of these.

A storage medium may be any available medium that may be accessed by a general purpose or special purpose computer. By way of example, and not limitation, computer-readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.

Claim 1:
A method of wireless communication by a user equipment, UE (<NUM>), comprising:
receiving (<NUM>), from a base station, BS (<NUM>), signaling indicating multiple uplink transmission configuration indicator, TCI states, wherein the signaling indicating the multiple uplink TCI states is indicated via a mapping of the multiple uplink TCI states to a single uplink TCI codepoint which applies only to uplink transmissions, wherein the multiple uplink TCI states are based on more than one of a space division multiplexing, SDM, scheme, a frequency division multiplexing, FDM, scheme, or a time division multiplexing, TDM, scheme;
configuring (<NUM>), based on the signaling indicating the multiple uplink TCI states, the multiple uplink TCI states to be used by the UE (<NUM>) for the uplink transmissions; and
transmitting (<NUM>), to the base station, BS (<NUM>), the uplink transmissions based on the multiple uplink TCI states.