Patent Description:
For example, full-duplex communication may provide improvements in LTE, NR, and other radio access technologies by enabling contemporaneous uplink and downlink communication by a single wireless device using the same resources. Full-duplex communication may provide a reduction in latency, enhanced spectral efficiency per cell or per UE, and more efficient resource utilization. Additionally, or alternatively, spectral efficiency, resource utilization, and/or the like may be improved in a simultaneous half-duplex multi-TRP (mTRP) communication mode in which a UE or another wireless device simultaneously communicates with multiple TRPs on an uplink (e.g., in a simultaneous Tx mode), with multiple TRPs on a downlink (e.g., in a simultaneous Rx mode), and/or the like.

<CIT> discloses that measurement modeling and filtering may include configurable cell quality derivation method that is used for multibeam based NR networks; a common measurement model that considers different characteristics of the two measurement signals, NR synchronization signal and additional reference signal; and a multi-level measurement filtering approach that handles different mobility scenarios in an NR network. <CIT> relates to channel state operations using full-duplex communication. One example method generally includes receiving at least one channel state information-reference signal (CSI-RS) from a base station, transmitting at least one sounding reference signal (SRS) to the base station, wherein the CSI-RS is received simultaneously with the transmission of the at least one SRS, and transmitting, to the base station, at least one channel state feedback message comprising channel state information based on the at least one CSI-RS. <CIT> relates to performing communication in wireless communication system. <CIT> relates to multi-transmit receive point candidate identification.

In some aspects, a method of wireless communication performed by a user equipment (UE) includes: measuring, while communicating with a serving transmit receive point (TRP) in a half-duplex communication mode, one or more synchronization signal block (SSB) beams associated with one or more neighbor TRPs; and transmitting, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex multi-TRP (mTRP) communication mode.

In some aspects, a method of wireless communication performed by a base station includes: receiving, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode; and transmitting, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In some aspects, a UE for wireless communication includes: a memory; and one or more processors, coupled to the memory, configured to: measure, while communicating with a serving TRP in a half-duplex communication mode, one or more SSB beams associated with one or more neighbor TRPs; and transmit, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode.

In some aspects, a base station for wireless communication includes: a memory; and one or more processors, coupled to the memory, configured to: receive, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode; and transmit, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions that, when executed by one or more processors of a UE, cause the one or more processors to: measure, while communicating with a serving TRP in a half-duplex communication mode, one or more SSB beams associated with one or more neighbor TRPs; and transmit, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode.

In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions that, when executed by one or more processors of a base station, cause the one or more processors to: receive, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode; and transmit, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In some aspects, an apparatus for wireless communication includes: means for measuring, while communicating with a serving TRP in a half-duplex communication mode, one or more SSB beams associated with one or more neighbor TRPs; and means for transmitting, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode.

In some aspects, an apparatus for wireless communication includes: means for receiving, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode; and means for transmitting, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios. Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, or artificial intelligence-enabled devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals may include a number of components for analog and digital purposes (e.g., hardware components including antennas, radio frequency chains, power amplifiers, modulators, buffers, processor(s), interleavers, adders, or summers). It is intended that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, or end-user devices of varying size, shape, and constitution.

The wireless network <NUM> may include a number of base stations <NUM> (shown as BS 110a, BS 110b, BS 110c, and BS nod) and other network entities.

In the example shown in <FIG>, a relay BS nod may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.

For example, the UEs <NUM> may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network.

The transceiver may be used by a processor (e.g., controller/processor <NUM>) and memory <NUM> to perform aspects of any of the methods described herein (for example, as described with reference to <FIG>, <FIG>, and/or <FIG>).

The transceiver may be used by a processor (e.g., controller/processor <NUM>) and memory <NUM> to perform aspects of any of the methods described herein (for example, as described with reference to <FIG>, <FIG>, and/or <FIG>).

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with mobility reporting for full-duplex communication or simultaneous half-duplex communication with multiple TRPs, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the base station <NUM> and/or the UE <NUM>, may cause the one or more processors, the UE <NUM>, and/or the base station <NUM> to perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. In some aspects, executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.

In some aspects, UE <NUM> may include means for measuring, while communicating with a serving TRP <NUM> in a half-duplex communication mode, one or more synchronization signal block (SSB) beams associated with one or more neighbor TRPs <NUM>, means for transmitting, to base station <NUM>, a mobility report indicating at least one candidate TRP <NUM> based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP <NUM> satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

In some aspects, base station <NUM> may include means for receiving, from UE <NUM> while the UE <NUM> is communicating with a serving TRP <NUM> in a half-duplex communication mode, a mobility report indicating at least one candidate TRP <NUM> associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode, means for transmitting, to UE <NUM>, configuration information to enable pairing the at least one candidate TRP <NUM> in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like.

<FIG> is a diagram illustrating examples <NUM> of radio access networks, in accordance with the present disclosure.

A traditional (e.g., <NUM>, <NUM>, LTE, and/or the like) radio access network <NUM> may include multiple base stations <NUM> (e.g., access nodes (AN)), where each base station <NUM> communicates with a core network via a wired backhaul link <NUM>, such as a fiber connection. A base station <NUM> may communicate with a UE <NUM> via an access link <NUM>, which may be a wireless link. In some aspects, a base station <NUM> shown in <FIG> may be a base station <NUM> shown in <FIG>. In some aspects, a UE <NUM> shown in <FIG> may be a UE <NUM> shown in <FIG>.

A radio access network <NUM> may include a wireless backhaul network, sometimes referred to as an integrated access and backhaul (IAB) network. In an IAB network, at least one base station is an anchor base station <NUM> that communicates with a core network via a wired backhaul link <NUM>, such as a fiber connection. An anchor base station <NUM> may also be referred to as an IAB donor (or IAB-donor). The IAB network may include one or more non-anchor base stations <NUM>, sometimes referred to as relay base stations or IAB nodes (or IAB-nodes). The non-anchor base station <NUM> may communicate directly or indirectly with the anchor base station <NUM> via one or more backhaul links <NUM> (e.g., via one or more non-anchor base stations <NUM>) to form a backhaul path to the core network for carrying backhaul traffic. Backhaul link <NUM> may be a wireless link. Anchor base station(s) <NUM> and/or non-anchor base station(s) <NUM> may communicate with one or more UEs <NUM> via access links <NUM>, which may be wireless links for carrying access traffic. In some aspects, an anchor base station <NUM> and/or a non-anchor base station <NUM> shown in <FIG> may be a base station <NUM> shown in <FIG>. In some aspects, a UE <NUM> shown in <FIG> may be a UE <NUM> shown in <FIG>.

In some aspects, a radio access network <NUM> that includes an IAB network may utilize millimeter wave technology and/or directional communications (e.g., beamforming and/or the like) for communications between base stations and/or UEs (e.g., between two base stations, between two UEs, and/or between a base station and a UE). For example, wireless backhaul links <NUM> between base stations may use millimeter wave signals to carry information and/or may be directed toward a target base station using beamforming and/or the like. Similarly, the wireless access links <NUM> between a UE and a base station may use millimeter wave signals and/or may be directed toward a target wireless node (e.g., a UE and/or a base station). In this way, inter-link interference may be reduced.

The configuration of base stations and UEs in <FIG> is shown as an example, and other examples are contemplated. For example, one or more base stations illustrated in <FIG> may be replaced by one or more UEs that communicate via a UE-to-UE access network (e.g., a peer-to-peer network, a device-to-device network, and/or the like). In this case, a UE that is directly in communication with a base station (e.g., an anchor base station or a non-anchor base station) may be referred to as an anchor node.

<FIG> is a diagram illustrating an example <NUM> of an IAB network architecture, in accordance with the present disclosure.

As shown in <FIG>, an IAB network may include an IAB donor <NUM> (shown as IAB-donor) that connects to a core network via a wired connection (shown as a wireline backhaul). For example, an Ng interface of an IAB donor <NUM> may terminate at a core network. Additionally, or alternatively, an IAB donor <NUM> may connect to one or more devices of the core network that provide a core access and mobility management function (AMF). In some aspects, an IAB donor <NUM> may include a base station <NUM>, such as an anchor base station, as described above in connection with <NUM>. As shown, an IAB donor <NUM> may include a central unit (CU), which may perform access node controller (ANC) functions, access and mobility management functions, and/or the like. The CU may configure a distributed unit (DU) of the IAB donor <NUM> and/or may configure one or more IAB nodes <NUM> (e.g., a mobile termination (MT) and/or a DU of an IAB node <NUM>) that connect to the core network via the IAB donor <NUM>. Thus, a CU of an IAB donor <NUM> may control and/or configure the entire IAB network that connects to the core network via the IAB donor <NUM>, such as by using control messages and/or configuration messages (e.g., a radio resource control (RRC) configuration message, an F1 application protocol (F1AP) message, and/or the like).

As further shown in <FIG>, the IAB network may include IAB nodes <NUM> (shown as IAB-node <NUM>, IAB-node <NUM>, and IAB-node <NUM>) that connect to the core network via the IAB donor <NUM>. As shown, an IAB node <NUM> may include MT functions (also sometimes referred to as UE functions (UEF)) and may include DU functions (also sometimes referred to as access node functions (ANF)). The MT functions of an IAB node <NUM> (e.g., a child node) may be controlled and/or scheduled by another IAB node <NUM> (e.g., a parent node of the child node) and/or by an IAB donor <NUM>. The DU functions of an IAB node <NUM> (e.g., a parent node) may control and/or schedule other IAB nodes <NUM> (e.g., child nodes of the parent node) and/or UEs <NUM>. Thus, a DU may be referred to as a scheduling node or a scheduling component, and an MT may be referred to as a scheduled node or a scheduled component. In some aspects, an IAB donor <NUM> may include DU functions and not MT functions. That is, an IAB donor <NUM> may configure, control, and/or schedule communications of IAB nodes <NUM> and/or UEs <NUM>. A UE <NUM> may include only MT functions, and not DU functions. That is, communications of a UE <NUM> may be controlled and/or scheduled by an IAB donor <NUM> and/or an IAB node <NUM> (e.g., a parent node of the UE <NUM>).

When a first node controls and/or schedules communications for a second node (e.g., when the first node provides DU functions for the second node's MT functions), the first node may be referred to as a parent node of the second node, and the second node may be referred to as a child node of the first node. A child node of the second node may be referred to as a grandchild node of the first node. Thus, a DU function of a parent node may control and/or schedule communications for child nodes of the parent node. A parent node may be an IAB donor <NUM> or an IAB node <NUM>, and a child node may be an IAB node <NUM> or a UE <NUM>. Communications of an MT function of a child node may be controlled and/or scheduled by a parent node of the child node.

As further shown in <FIG>, a link between a UE <NUM> (e.g., which only has MT functions, and not DU functions) and an IAB donor <NUM>, or between a UE <NUM> and an IAB node <NUM>, may be referred to as an access link <NUM>. Access link <NUM> may be a wireless access link that provides a UE <NUM> with radio access to a core network via an IAB donor <NUM>, and optionally via one or more IAB nodes <NUM>. Thus, the network illustrated in <FIG> may be referred to as a multi-hop network or a wireless multi-hop network.

As further shown in <FIG>, a link between an IAB donor <NUM> and an IAB node <NUM> or between two IAB nodes <NUM> may be referred to as a backhaul link <NUM>. Backhaul link <NUM> may be a wireless backhaul link that provides an IAB node <NUM> with radio access to a core network via an IAB donor <NUM>, and optionally via one or more other IAB nodes <NUM>. In an IAB network, network resources for wireless communications (e.g., time resources, frequency resources, spatial resources, and/or the like) may be shared between access links <NUM> and backhaul links <NUM>. In some aspects, a backhaul link <NUM> may be a primary backhaul link or a secondary backhaul link (e.g., a backup backhaul link). In some aspects, a secondary backhaul link may be used if a primary backhaul link fails, becomes congested, becomes overloaded, and/or the like. For example, a backup link <NUM> between IAB-node <NUM> and IAB-node <NUM> may be used for backhaul communications if a primary backhaul link between IAB-node <NUM> and IAB-node <NUM> fails. As used herein, an IAB donor <NUM> or an IAB node <NUM> may be referred to as a node or a wireless node.

<FIG> are diagrams illustrating examples <NUM>, <NUM>, <NUM>, <NUM> of full-duplex (FD) communication, in accordance with the present disclosure. As shown in <FIG>, examples <NUM>, <NUM>, <NUM>, <NUM> generally include one or more UEs <NUM> in communication with one or more base stations <NUM>, TRPs <NUM>, and/or the like in a wireless network that supports full-duplex communication. However, it will be appreciated that the devices shown in <FIG> are exemplary only, and that the wireless network may support full-duplex communication between other devices (e.g., between a mobile termination node and a control node, between an IAB child node and an IAB parent node, between a scheduled node and a scheduling node, and/or the like).

As shown in <FIG>, example <NUM> includes a UE <NUM> in communication with two base stations (e.g., TRPs) <NUM>-<NUM>, <NUM>-<NUM>. As shown in <FIG>, the UE <NUM> may transmit one or more uplink transmissions to base station <NUM>-<NUM> and may concurrently receive one or more downlink transmissions from base station <NUM>-<NUM>. Accordingly, in the example <NUM> shown in <FIG>, full-duplex communication is enabled for the UE <NUM>, which may be operating as a full-duplex node, but not for the base stations <NUM>-<NUM>, <NUM>-<NUM>, which may be operating as half-duplex nodes. Additionally, or alternatively, as shown in <FIG>, example <NUM> includes two UEs, UE1 <NUM>-<NUM> and UE2 <NUM>-<NUM> in communication with a base station <NUM>. In this case, the base station <NUM> may transmit one or more downlink transmissions to the UE1 <NUM>-<NUM> and may concurrently receive one or more uplink transmissions from the UE2 <NUM>-<NUM>. Accordingly, in the example <NUM> shown in <FIG>, full-duplex communication is enabled for the base station <NUM>, which may be operating as a full-duplex node, but not for the UE1 <NUM>-<NUM> and UE2 <NUM>-<NUM>, which may be operating as half-duplex nodes. Additionally, or alternatively, as shown in <FIG>, example <NUM> includes a UE <NUM> in communication with a base station <NUM>. In this case, the base station <NUM> may transmit, and the UE <NUM> may receive, one or more downlink transmissions concurrently with the UE <NUM> transmitting, and the base station <NUM> receiving, one or more uplink transmissions. Accordingly, in the example <NUM> shown in <FIG>, full-duplex communication is enabled for both the UE <NUM> and the base station <NUM>, each of which is operating as a full-duplex node.

The present disclosure generally relates to improving a manner in which flexible time-division duplexing (TDD) operates to support full-duplex communication, which generally refers to simultaneous uplink and downlink transmissions in Frequency Range <NUM> (FR2), in wireless networks that support beamformed communication, and/or the like. In some aspects, flexible TDD capabilities that support full-duplex communication may be present at a scheduling node (e.g., a base station, a TRP, a control node, a parent node, and/or the like), a scheduled node (e.g., a UE, an MT node, a child node, and/or the like), or both. For example, at a UE, uplink transmission may be from one antenna panel and downlink reception may be in another antenna panel. For example, as shown in <FIG>, a UE <NUM> that supports full-duplex communication may include multiple antenna panels (e.g., antenna arrays and/or the like), and each antenna panel may be associated with one or more beam groups that can be used for uplink communication or for downlink communication. For example, in <FIG>, the UE <NUM> has four antenna panels that are associated with respective beam groups (e.g., a first panel may be associated with beams that are indexed <NUM>-<NUM>, a second panel may be associated with beams that are indexed <NUM>-<NUM>, a third panel may be associated with beams that are indexed <NUM>-<NUM>, and a fourth panel may be associated with beams that are indexed <NUM>-<NUM>). Furthermore, when full-duplex communication is enabled at the UE <NUM>, one or more antenna panels (e.g., the first and fourth panels) may be configured for uplink transmission to one or more TRPs, and one or more antenna panels (e.g., the second and third panels) may be configured for downlink reception from one or more TRPs.

In general, full-duplex communication may be conditional on a beam separation of an uplink beam and a downlink beam at the respective antenna panels. Accordingly, improving the manner in which the uplink beam and the downlink beam are selected to enable full-duplex communication is desirable. Utilizing full-duplex communication may provide reduced latency by allowing a full-duplex node to transmit or receive a downlink signal in an uplink-only slot, or to transmit or receive an uplink signal in a downlink-only slot, which may enable latency savings. In addition, full-duplex communication may enhance spectral efficiency or throughput per cell or per UE, may enable more efficient resource utilization by simultaneously utilizing time and frequency resources for uplink and downlink communication, and/or the like. However, as described above, full-duplex communication may be dependent on sufficient spatial separation between uplink and downlink beams, to assist in limiting or reducing self-interference that may occur during full-duplex communication. In other words, full-duplex communication may be restricted from using certain uplink and downlink beam pairs that may result in self-interference. If a UE and a base station are unable to identify any uplink and downlink beam pair(s) that can provide sufficient spatial separation, the UE and the base station may be unable to support full-duplex communication. For example, in some cases, an uplink and downlink beam pair may not provide sufficient spatial separation if the uplink beam causes self-interference with respect to the downlink beam, which may occur when a transmitted signal leaks into a receive port (e.g., shown in <FIG> as leakage from the first panel configured for uplink transmission into the second panel configured for downlink reception). Additionally, or alternatively, self-interference may occur when an object reflects a transmitted signal back to a receive port (e.g., causing a clutter echo effect). For example, as shown in <FIG>, a signal transmitted by the first antenna panel toward node <NUM>-<NUM> may reflect off a reflecting (clutter echo-causing) object and into the second antenna panel, which may cause interference with a downlink signal transmitted from node <NUM>-<NUM> toward the second antenna panel. Accordingly, whether full-duplex communication can be performed may be dependent on selecting suitable uplink and downlink beam pairs (e.g., transmit and receive beams that are on different antenna panels) to reduce or minimize self-interference (especially clutter echo) via spatial isolation. In some aspects, determining the uplink and downlink beams that are separated on respective antenna panels may provide a reliable full-duplex communication by selecting beam pairs that minimize or reduce self-interference.

Accordingly, measuring self-interference at a wireless node having full-duplex capabilities may assist in determining uplink and downlink beam pairs that may support full-duplex communication. For example, a UE, an IAB child node, and/or the like may obtain self-interference measurements to determine one or more candidate uplink transmit beams that can be paired with one or more candidate downlink receive beams. Additionally, or alternatively, a base station, an IAB parent node, and/or the like may obtain self-interference measurements to determine one or more candidate uplink receive beams that can be paired with one or more candidate downlink transmit beams. In general, to obtain the self-interference measurements, a wireless node with full-duplex capabilities may transmit a signal from a first set of antennas in one or more transmit beam directions, and the wireless node may concurrently measure a received signal (e.g., a reflected or leaked transmit signal) on a second set of antennas in one or more receive beam directions, where the first set of antennas may be different from or the same as the second set of antennas.

Accordingly, although full-duplex communication may enable latency savings, enhance spectral efficiency or throughput per cell or per UE, enable more efficient resource utilization, and/or the like, there are various circumstances in which a UE may be unable to establish full-duplex communications. For example, a UE with full-duplex capabilities may be unable to establish full-duplex communications in cases where the UE is communicating with a serving base station or a serving TRP that lacks full-duplex capabilities, in cases where a downlink beam and an uplink beam are associated with the same antenna panel, in cases where there is insufficient separation between a downlink beam and an uplink beam (e.g., due to leakage, clutter echo, and/or the like causing more than a threshold level of self-interference at the UE or the serving base station or serving TRP), and/or the like. However, in a wireless network that includes geographically dispersed base stations, TRPs, and/or the like, a mobile UE communicating with a serving base station or a serving TRP may change locations and come under the coverage of one or more neighbor base stations and/or neighbor TRPs that can be paired (e.g., with each other, or with the serving base station or serving TRP) in a full-duplex communication mode. Additionally, or alternatively, the mobile UE may come under the coverage of one or more neighbor base stations and/or neighbor TRPs that can be paired (e.g., with each other, or with the serving base station or serving TRP) in a simultaneous half-duplex multi-TRP (mTRP) communication mode. For example, in a simultaneous half-duplex mTRP communication mode, a UE may be configured to simultaneously communicate uplink transmissions to different TRPs or simultaneously receive downlink transmissions from different TRPs to improve reliability, increase throughput, and/or the like.

However, existing wireless networks generally limit mobility reporting to cell switching scenarios. For example, in a cell switching scenario, a UE may transmit a mobility report to a base station in cases where an SSB beam transmitted by one or more neighbor base stations or neighbor TRPs are associated with an RSRP measurement that satisfies a cell-specific threshold related to cell switching. For example, the cell-specific threshold may be satisfied in cases where the RSRP measurement associated with the SSB beam from the neighbor base station or neighbor TRP has a higher absolute value than an RSRP measurement associated with an SSB beam from the serving base station or serving TRP, where the RSRP measurement associated with the SSB beam from the neighbor base station or neighbor TRP is higher than the RSRP measurement associated with an SSB beam from the serving base station or serving TRP by a relative value (e.g., higher than the RSRP value of the serving TRP by +X dB), and/or the like. However, in cases where the neighbor base station or neighbor TRP may be suitable for pairing in a full-duplex communication mode or a simultaneous half-duplex mTRP communication, a purpose and one or more criteria for triggering transmission of a mobility report should reflect the conditions of enabling full-duplex or simultaneous half-duplex mTRP communication. For example, performance, efficiency, latency, utilization, and/or the like may be improved by enabling a UE to switch from communicating with a serving base station or TRP to communicating with multiple base stations or TRPs that are paired in a full-duplex or simultaneous half-duplex mTRP mode even if the RSRP measurements associated with the neighbor base stations fail to satisfy the cell-specific threshold related to cell switching.

Some aspects described herein relate to techniques and apparatuses associated with mobility reporting for full-duplex communication or simultaneous half-duplex communication with multiple TRPs (also referred to as multi-TRP (mTRP) communication and/or the like). For example, while a UE is communicating with a serving TRP in a half-duplex communication mode (e.g., downlink only or uplink only), the UE may periodically measure SSB beams transmitted by one or more neighbor TRPs. Accordingly, in cases where the UE detects a neighbor TRP that can be paired with the serving TRP in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode, the UE may transmit a mobility report to a base station to indicate the neighbor TRP for the purpose of pairing the neighbor TRP with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. Additionally, or alternatively, in cases where the UE detects a pair of neighbor TRPs that can be paired with each other in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode, the UE may transmit a mobility report to a base station to indicate the neighbor TRP pair for the purpose of pairing the neighbor TRPs with each other in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. In some aspects, as described herein, the UE may transmit the mobility report based at least in part on detecting that the neighbor TRP(s) satisfy criteria that are specific to pairing TRPs in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. For example, in some aspects, the UE may be configured with one or more thresholds that are relaxed with respect to a cell switching threshold to trigger transmission of the mobility report and enable pairing TRPs in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. Additionally, or alternatively, a neighbor TRP may satisfy criteria to be paired in the full-duplex communication mode when beams associated with the neighbor TRP and the serving TRP are associated with different panels of the UE. In this way, a UE may transmit a mobility report to indicate when one or more neighbor TRPs satisfy criteria to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode, which may improve performance, efficiency, latency, utilization, and/or the like by enabling the UE to simultaneously transmit on an uplink to paired TRPs, simultaneously receive on a downlink from paired TRPs, or simultaneously transmit on an uplink to a first TRP while receiving on a downlink from a second TRP paired with the first TRP.

<FIG> are diagrams illustrating one or more examples <NUM> associated with mobility reporting for full-duplex communication or simultaneous half-duplex communication with multiple TRPs, in accordance with the present disclosure. As shown in <FIG>, example(s) <NUM> includes a UE (e.g., UE <NUM>, UE <NUM>, UE <NUM>, UE <NUM>, and/or the like) that may communicate with one or more TRPs in a wireless network (e.g., wireless network <NUM>, radio access network <NUM>, <NUM>,<NUM>, and/or the like). Furthermore, as shown in <FIG>, the one or more TRPs may be associated with a base station (e.g., base station <NUM>, base station <NUM>, base station <NUM>, base station <NUM>, base station <NUM>, and/or the like). For example, different TRPs may be associated with the same serving cell and different physical cell identifiers (PCIs), or different TRPs may be associated with different serving cells and different PCIs under control of the same base station.

Although some aspects are described herein in relation to a UE communicating with one or more base stations or TRPs, in some cases, similar techniques may be applied for other devices that can simultaneously communicate with a pair of devices on an uplink and a downlink or simultaneously communicate with a pair of devices on an uplink or a downlink. For example, in some aspects, operations described herein as being performed by a UE may additionally, or alternatively, be performed by an MT node, a child node, a scheduled node, and/or the like, and operations described herein as being performed by a base station or a TRP may additionally, or alternatively, be performed by a control node, a parent node, a scheduling node, and/or the like.

As shown in <FIG> and <FIG>, and by reference number <NUM>, the UE may communicate with a serving TRP (shown as TRP<NUM>) associated with a first PCI in a half-duplex communication mode. For example, in <FIG> and <FIG>, the UE is communicating with the serving TRP in a half-duplex mode. In some cases, the UE and the serving TRP may communicate in the half-duplex communication mode because the serving TRP lacks full-duplex communication capabilities, because the UE is unable to determine a downlink beam and an uplink beam that are associated with different antenna panels, because all candidate downlink and uplink beam pairs are associated with self-interference that exceeds a threshold, and/or the like.

As further shown in <FIG> and <FIG>, and by reference number <NUM>, the UE may be associated with a mobility event in which the UE changes locations within the wireless network. For example, the UE may move toward the coverage of one or more neighbor TRPs (shown as TRP<NUM>, TRP<NUM>, TRPN, and/or the like). For example, the one or more neighbor TRPs may be associated with different PCIs in the same cell as the serving TRP, different PCIs in different serving cells than the serving TRP, and/or the like. In general, as described herein, the neighbor TRP(s) and the serving TRP may be associated with or otherwise under control of the same base station. Accordingly, in some aspects, the UE may transmit a mobility report to the base station to request that the base station enable a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode in cases where the neighbor TRP(s) satisfy one or more criteria related to pairing in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

For example, as shown in <FIG>, and by reference number <NUM>, the UE may detect a neighbor TRP that may be paired with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode (e.g., based on an SSB beam transmitted by the neighbor TRP being associated with a different panel than a beam used for half-duplex communication with the serving TRP, based on the SSB beam transmitted by the neighbor TRP satisfying one or more cell-specific or PCI-specific thresholds that relate to switching from the half-duplex communication mode to the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode, and/or the like. Additionally, or alternatively, as shown in <FIG>, and by reference number <NUM>, the UE may detect a pair of neighbor TRPs that may be paired with each other in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. For example, in some aspects, the pair of neighbor TRPs may satisfy criteria to be paired with each other in cases where a first SSB beam transmitted by a first neighbor TRP and a second SSB beam transmitted by a second neighbor TRP are associated with different panels. Additionally, or alternatively, the SSB beams transmitted by the pair of neighbor TRPs may each be associated with RSRP measurements that exceed an RSRP measurement of the serving TRP, or one or more of the neighbor TRPs may be associated with an SSB beam that has a lower RSRP measurement than the serving TRP but is associated with a different panel than the serving TRP.

Accordingly, as described herein, <FIG> and <FIG> illustrate example mobility scenarios where a UE communicating with a serving TRP in a half-duplex communication mode (e.g., downlink-only or uplink-only) may detect one or more neighbor TRPs that satisfy criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP mode. As described in further detail below with reference to <FIG>, the UE may transmit a mobility report to a base station that controls the serving TRP and/or the neighbor TRP(s) that satisfy the criteria to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP mode. For example, as described herein, the UE may transmit the mobility report for the purpose of requesting a switch from the half-duplex communication mode to the full-duplex communication mode or the simultaneous half-duplex mTRP mode, which may enable improved performance, throughput, latency, efficiency, resource utilization, and/or the like. Furthermore, as described in further detail below with reference to <FIG>, transmission of the mobility report may be triggered according to one or more criteria that are based at least in part on specific conditions that relate to enabling the full-duplex communication mode or the simultaneous half-duplex mTRP mode.

As shown in <FIG>, and by reference number <NUM>, the UE may measure SSB beams transmitted by one or more neighbor TRPs during an SSB measurement timing configuration (SMTC) window. For example, in some aspects, the UE may measure an RSRP associated with the SSB beams transmitted by the neighbor TRP(s), and the UE may further determine an antenna panel of the UE that is associated with each SSB beam. Accordingly, as described herein, the UE may determine whether the neighbor TRP(s) satisfy one or more criteria to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP mode based at least in part on the RSRP measurements associated with the SSB beams transmitted by the neighbor TRP(s), the antenna panels associated with each SSB beam, and/or the like.

As further shown in <FIG>, and by reference number <NUM>, the UE may transmit, and the base station may receive, a mobility report indicating one or more candidate TRPs that satisfy criteria to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP mode. For example, in cases where the UE detects a single candidate TRP, the candidate TRP may satisfy the criteria to be paired with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP mode in cases where an SSB beam transmitted by the candidate TRP is associated with a different panel than the UE is using to communicate with the serving TRP. Additionally, or alternatively, the candidate TRP may satisfy the criteria to be paired with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP mode in cases where an RSRP measurement associated with the SSB beam transmitted by the candidate TRP satisfies one or more thresholds.

For example, in some aspects, the UE may be configured with at least a first cell-specific threshold related to cell switching (referred to herein as a cell switching threshold) and a second cell-specific threshold related to pairing a TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP mode (referred to herein as a TRP pairing threshold). In general, the cell switching threshold may be configured as a relative higher value with respect to an RSRP measurement associated with an SSB beam transmitted by the serving TRP. For example, the UE may be triggered to transmit a mobility report to indicate a candidate TRP in cases where the SSB beam transmitted by the candidate TRP has an RSRP measurement that exceeds an RSRP measurement associated with the serving TRP by the cell switching threshold (e.g., higher than the RSRP measurement of the serving cell by +X dB). Additionally, or alternatively, the cell switching threshold may be an absolute threshold, whereby the UE may be triggered to transmit a mobility report to indicate a candidate TRP in cases where the SSB beam transmitted by the candidate TRP has an RSRP measurement that is higher than an RSRP measurement associated with the serving TRP. In general, the cell switching threshold may be configured to require that the RSRP measurement of the candidate TRP is generally higher than the serving TRP to ensure that the UE does not experience performance loss by switching to the candidate TRP. However, for the purpose of enabling full-duplex or simultaneous half-duplex mTRP communications, the UE may experience improved performance even if a signal strength from the candidate TRP is weaker than the serving TRP.

Accordingly, in some aspects, the second (TRP pairing) threshold may be associated with relaxed criteria relative to the cell switching threshold to trigger transmission of a mobility report in cases where one or more candidate TRPs may be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. For example, the TRP pairing threshold may be defined as a negative value relative to the RSRP measurement of the serving TRP. In this case, when the RSRP measurement associated with the candidate TRP is greater than or equal to -Y dB relative to the RSRP measurement associated with the serving TRP, the TRP pairing threshold may be satisfied and the UE may be configured to transmit the mobility report to indicate that the candidate TRP may be paired with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode. Additionally, or alternatively, the TRP pairing threshold may be an absolute RSRP threshold that has a lower value than the cell switching threshold. In this way, the UE may be triggered to transmit the mobility report for the purpose of requesting a switch from the half-duplex communication to the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode in cases where the RSRP measurement associated with the candidate TRP may otherwise fail to satisfy the cell switching threshold. In this way, opportunities for the UE to enable the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode may be increased, which may improve performance, throughput, latency, efficiency, resource utilization, and/or the like.

In some aspects, the reporting criteria described above, which are based at least in part on two cell-specific thresholds (e.g., the TRP pairing threshold and the relatively higher cell switching threshold), may be applied only in cases where the one or more candidate TRPs detected by the UE are included in a list of neighbor TRPs configured for the UE. However, in some cases, the UE may come under the coverage of a candidate TRP that does not appear in the list of neighbor TRPs configured for the UE. Accordingly, in such cases, the UE may be configured to determine whether to trigger the mobility report to indicate the candidate TRP(s) based on other rules. For example, in some aspects, the UE may transmit the mobility report based at least in part on the RSRP measurement(s) associated with the SSB beam(s) transmitted by the candidate TRP(s) satisfying the (higher) cell switching threshold. Additionally, or alternatively, the UE may transmit the mobility report based at least in part on the candidate TRP(s) indicating a capability to support the full-duplex communication mode and/or simultaneous half-duplex communication mode.

In some aspects, in cases where the UE detects a pair of candidate TRPs that may be paired with one another in the full-duplex communication mode and/or simultaneous half-duplex mTRP communication mode, the UE may generally apply the same or similar criteria as described above with respect to the case where the UE detects a single candidate TRP that may be paired with the serving TRP. For example, in some aspects, the UE may be configured with two cell-specific thresholds, one for cell switching and one for TRP pairing, and may transmit the mobility report to indicate the pair of candidate TRPs in cases where SSB beams associated with the pair of candidate TRPs are associated with different panels and RSRP measurements associated with both candidate TRPs satisfy the TRP pairing threshold and/or the cell switching threshold. Additionally, or alternatively, the UE may transmit the mobility report in cases where the SSB beams associated with the pair of candidate TRPs are associated with different panels and RSRP measurements associated with both candidate TRPs are higher than an RSRP measurement associated with the serving TRP. Additionally, or alternatively, the UE may transmit the mobility report in cases where a first RSRP measurement associated with a first candidate TRP is higher than the RSRP measurement associated with the serving TRP, and an SSB beam associated with a second candidate TRP is from a different panel than the first candidate TRP even if a second RSRP measurement associated with the second candidate TRP is slightly lower than the serving TRP. In this way, the mobility report may be triggered when the pair of candidate TRPs both satisfy the TRP pairing threshold (e.g., via beams from different panels of the UE) and the pair of candidate TRPs are otherwise suitable to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

As further shown in <FIG>, and by reference number <NUM>, the base station may transmit, and the UE may receive, configuration information enabling the full-duplex communication, the simultaneous mTRP communication mode (e.g., simultaneous uplink transmission to paired TRPs or simultaneous downlink reception from paired TRPs), or indicating that the UE is to remain in the half-duplex communication mode with the serving TRP. For example, in some aspects, the mobility report transmitted by the UE may include assistance information to enable the base station to determine the appropriate communication mode to enable for the UE. For example, in some aspects, the mobility report may indicate an identifier associated with the SSB beam transmitted by each candidate TRP that satisfies the full-duplex and/or mTRP pairing criteria, and a corresponding RSRP measurement associated with the respective SSB beam.

Furthermore, in some aspects, the assistance information included in the mobility report may indicate a recommended communication direction for the candidate TRP(s). For example, when indicating a candidate TRP to be paired with the serving TRP in the full-duplex communication mode, the assistance information may include a recommendation to use a first SSB beam associated with the serving TRP as an uplink beam and a second SSB beam associated with the candidate TRP as a downlink beam, or vice versa. Additionally, or alternatively, when indicating a pair of candidate TRPs to be paired with each other in the full-duplex communication mode, the assistance information may include a recommendation to use a first SSB beam associated with a first candidate TRP as an uplink beam and a second SSB beam associated with a second candidate TRP as a downlink beam, or vice versa.

For example, in some aspects, the UE may determine the recommended communication directions based at least in part on a maximum permissible exposure (MPE) constraint, which is typically a regulatory requirement defined in terms of aggregate exposure over a certain amount of time. For example, when the UE is communicating using radio access technologies that operate in a frequency range below <NUM>, the applicable MPE parameter is a specific absorption rate (SAR), which refers to a rate at which the human body absorbs energy when exposed to radio frequency (RF) energy (e.g., power absorbed per unit of mass, which may be expressed according to watts per kilogram (W/kg)). In particular, SAR requirements generally specify that overall radiated power by a UE is to remain under a certain level to limit heating that may occur when RF energy is absorbed. In another example, when the UE is communicating using a radio access technology that operates in a high frequency range, such as a millimeter wave (mmW) frequency range, the applicable MPE parameter is power density, which may be regulated to limit heating of the UE and/or nearby surfaces. Accordingly, if a particular beam associated with one TRP is blocked by a user's finger or other body part, the UE may recommend using that TRP for a downlink and using the other TRP for uplink transmissions. Additionally, or alternatively, the UE may determine the recommended communication directions based at least in part on a thermal balancing condition associated with the UE. For example, because transmitting generally consumes more power (and therefore generates more heat) than receiving, the UE may recommend using a first TRP for a downlink and a second TRP for an uplink in cases where an antenna panel associated with the beam directed towards the first TRP is hotter than an antenna panel associated with the beam directed towards the second TRP.

Furthermore, in some aspects, the assistance information included in the mobility report may include a pair of signal-to-interference-plus-noise ratios (SINRs) and/or CQIs that are based on different combinations of TRP pairings. For example, in the case of a mobility report indicating a candidate TRP that satisfies criteria to be paired with the serving TRP, the assistance information may include a first SINR or CQI that is calculated based on using a first SSB beam of the serving TRP as a downlink beam and a second SSB beam of the candidate TRP as an uplink beam. Furthermore, the assistance information may include a second SINR or CQI that is calculated based on using the first SSB beam of the serving TRP as the uplink beam and the second SSB beam of the candidate TRP as the downlink beam. Similarly, in the case of a mobility report indicating a pair of candidate TRPs that satisfy criteria to be paired with each other, the assistance information may include a first SINR or CQI that is calculated based on using a first SSB beam of a first candidate TRP as a downlink beam and a second SSB beam of a second candidate TRP as an uplink beam, and the assistance information may include a second SINR or CQI that is calculated based on using the first SSB beam of the first candidate TRP as the uplink beam and the second SSB beam of the second candidate TRP as the downlink beam.

In this case, to enable the UE to calculate the SINR or CQI for each TRP pairing, the base station may transmit, to the UE, information to configure one or more channel measurement resources (CMRs) and one or more interference measurement resources (IMRs). Accordingly, for a candidate TRP to be paired with the serving TRP, the base station may configure the candidate TRP to sweep through a set of N candidate SSB beams, channel state information reference signal (CSI-RS) beams, and/or the like, and may configure the serving TRP to sweep through a set of active SSB beams, a set of active CSI-RS beams, and/or the like. In this way, a particular SINR or CQI may be determined by measuring a CMR associated with downlink transmissions by a first TRP and measuring an IMR associated with interference that downlink transmissions by a second TRP cause with respect to reception of the downlink transmissions by a first TRP. Furthermore, in the case of full-duplex communications, the SINR or CQI may be determined by further measuring a second IMR for uplink transmissions by the UE that cause self-interference with respect to reception of the downlink transmissions by the first TRP. Accordingly, for full-duplex communications, the UE may report one or more downlink and uplink beam pairs that satisfy criteria for pairing in the full-duplex communication mode (e.g., downlink and uplink beam pairs that are associated with different panels and have SINR values, CQI values, self-interference measurements, and/or the like that satisfy a threshold), and the UE may further report indexes associated with the corresponding TRPs to enable the base station to select a final downlink and uplink beam pair with corresponding TRP indexes to enable the full-duplex communication mode with a pair of TRPs.

Furthermore, in some aspects, the assistance information included in the mobility report may include a pair of power headroom values that are available for uplink transmissions to different TRPs. For example, in the case of a mobility report indicating a candidate TRP that satisfies criteria to be paired with the serving TRP, the assistance information may include a first power headroom value that is based on using a first SSB beam of the serving TRP as an uplink beam and a second power headroom value that is based on using a second SSB beam of the candidate TRP as an uplink beam. Similarly, in the case of a mobility report indicating a pair of candidate TRPs that satisfy criteria to be paired with each other, the assistance information may include a first power headroom value that is based on using a first SSB beam of a first candidate TRP as an uplink beam and a second power headroom value that is based on using a second SSB beam of a second candidate TRP as an uplink beam. Furthermore, in some aspects, the pair of power headroom values may be included as assistance information in cases where the mobility report is transmitted to initiate the full-duplex communication mode or an mTRP communication mode with simultaneous uplink transmission to different TRPs. However, the mobility report may omit the power headroom values in cases where the mobility report is transmitted to initiate simultaneous downlink transmission from different TRPs, as the power headroom values are generally applicable to transmissions only. Furthermore, in some aspects, each power headroom value may be limited or otherwise constrained by a self-interference measurement. For example, a maximum uplink transmit power in a certain beam direction may be reduced or limited by self-interference (e.g., the UE may be required to transmit at less than full power to avoid causing more than a threshold level of self-interference with downlink reception).

Accordingly, as described herein, the mobility report that the UE provides to the base station may include various sources of information to enable the base station to determine the best communication mode to enable for the UE. For example, the base station may consider the RSRP measurements associated with the serving TRP and/or the candidate TRPs, the recommended communication directions for the serving TRP and/or the candidate TRPs, the SINR or CQI values associated with different combinations of TRP pairings, the power headroom values associated with using different TRPs for uplink transmissions, and/or the like to determine whether to enable the full-duplex communication mode, simultaneous transmission and/or reception in the mTRP communication mode, or the half-duplex communication mode. Furthermore, in some aspects, the base station may configure the serving TRP and/or the candidate TRPs to perform self-interference measurements for one or more communication modes, may determine one or more network parameters such as loading, and/or the like, in order to determine the best communication mode to enable for the UE.

As indicated above, <FIG>-6D are provided as one or more examples. Other examples may differ from what is described with respect to <FIG>-6D.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE, in accordance with the present disclosure. Example process <NUM> is an example where the UE (e.g., UE <NUM>, UE <NUM>, UE <NUM>, UE <NUM>, and/or the like) performs operations associated with mobility reporting for full-duplex communication or simultaneous half-duplex communication with multiple TRPs.

As shown in <FIG>, in some aspects, process <NUM> may include measuring, while communicating with a serving TRP in a half-duplex communication mode, one or more SSB beams associated with one or more neighbor TRPs (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may measure, while communicating with a serving TRP in a half-duplex communication mode, one or more SSB beams associated with one or more neighbor TRPs, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to a base station, a mobility report indicating at least one candidate TRP based at least in part on determining that an SSB beam transmitted by the at least one candidate TRP satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode, as described above.

In a first aspect, the mobility report indicates that the at least one candidate TRP satisfies the criteria to be paired with the serving TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In a second aspect, alone or in combination with the first aspect, the at least one candidate TRP includes a first candidate TRP and a second candidate TRP that satisfy the criteria to be paired with one another in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In a third aspect, alone or in combination with one or more of the first and second aspects, the first candidate TRP and the second candidate TRP transmit respective SSB beams that are associated with RSRP measurements that are higher than an RSRP measurement associated with an SSB beam transmitted by the serving TRP.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, one or more of the first candidate TRP or the second candidate TRP transmit an SSB beam that is associated with a different panel of the UE than an SSB beam transmitted by the serving TRP.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process <NUM> includes switching from a cell associated with the serving TRP to one or more cells associated with the first candidate TRP and the second candidate TRP that satisfy the criteria to be paired with one another in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an RSRP measurement associated with the SSB beam transmitted by the at least one candidate TRP satisfying a first threshold that has a negative value relative to an RSRP measurement associated with an SSB beam transmitted by the serving TRP or a second threshold, related to cell switching, that has a higher value relative to the RSRP measurement associated with the SSB beam transmitted by the serving TRP.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an RSRP measurement associated with the SSB beam transmitted by the at least one candidate TRP satisfying a first threshold that has a lower absolute value than a second threshold related to cell switching.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an RSRP measurement associated with the SSB beam transmitted by the at least one candidate TRP satisfying a threshold related to cell switching.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on the at least one candidate TRP indicating a capability to support the full-duplex or mTRP communication mode.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on the SSB beam transmitted by the at least one candidate TRP being associated with a different panel of the UE than an SSB beam transmitted by the serving TRP.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the mobility report further indicates a recommended communication direction for the at least one candidate TRP.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the recommended communication direction for the at least one candidate TRP is based at least in part on an MPE constraint or a thermal balancing condition associated with the UE.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the mobility report further indicates a first SINR or CQI associated with using a first SSB beam of the at least one candidate TRP as an uplink beam and a second SSB beam as a downlink beam, where the first SINR or CQI is based at least in part on a first self-interference measurement from the first SSB beam to the second SSB beam, and the mobility report further indicates a second SINR or CQI associated with using the first SSB beam of the at least one candidate TRP as the downlink beam and the second SSB beam as the uplink beam, where the second SINR or CQI is based at least in part on a second self-interference measurement from the second SSB beam to the first SSB beam,.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the mobility report further indicates a first power headroom associated with using a first SSB beam of the at least one candidate TRP as an uplink beam and a second SSB beam as a downlink beam, and the mobility report further indicates a second power headroom associated with using the second SSB beam as the uplink beam and the first SSB beam of the at least one candidate TRP as the downlink beam.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the first power headroom and the second power headroom are based at least in part on a maximum uplink transmit power limited by one or more self-interference measurements associated with transmitting from the uplink beam to the downlink beam.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, process <NUM> includes receiving, from the base station, information configuring one or more CMRs and one or more self-interference measurement resources based at least in part on the mobility report indicating that the at least one candidate TRP satisfies criteria to be paired in the full-duplex communication mode, transmitting, to the base station, one or more candidate downlink and uplink beam pairs to be paired in the full-duplex communication mode based at least in part on measurements of the one or more CMRs and the one or more self-interference measurement resources, and receiving, from the base station, a final downlink and uplink beam pair to be used for paired TRPs that include the at least one candidate TRP and the serving TRP or another candidate TRP in the full-duplex communication mode.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, the mobility report further indicates an identifier associated with the SSB beam transmitted by the at least one candidate TRP and a corresponding RSRP measurement associated with the SSB beam.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a base station, in accordance with the present disclosure. Example process <NUM> is an example where the base station (e.g., base station <NUM>, base station <NUM>, base station <NUM>, base station <NUM>, base station <NUM>, and/or the like) performs operations associated with mobility reporting for full-duplex communication or simultaneous half-duplex communication with multiple TRPs.

As shown in <FIG>, in some aspects, process <NUM> may include receiving, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive, from a UE communicating with a serving TRP in a half-duplex communication mode, a mobility report indicating at least one candidate TRP associated with an SSB beam that satisfies criteria to be paired in a full-duplex communication mode or a simultaneous half-duplex mTRP communication mode, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to the UE, configuration information to enable pairing the at least one candidate TRP in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode, as described above.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the configuration information transmitted to the UE causes the UE to switch from a cell associated with the serving TRP to one or more cells associated with the first candidate TRP and the second candidate TRP that satisfy the criteria to be paired with one another in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an RSRP measurement associated with the SSB transmitted by the at least one candidate TRP satisfying a first threshold that has a negative value relative to an RSRP measurement associated with an SSB beam transmitted by the serving TRP or a second threshold, related to cell switching, that has a higher value relative to the RSRP measurement associated with the SSB beam transmitted by the serving TRP.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an RSRP associated with the SSB beam transmitted by the at least one candidate TRP satisfying a threshold related to cell switching.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the at least one candidate TRP is indicated by the mobility report based at least in part on an SSB beam transmitted by the at least one candidate TRP being associated with a different panel of the UE than an SSB beam transmitted by the serving TRP.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the mobility report further indicates a first SINR or CQI associated with using a first SSB beam of the at least one candidate TRP as an uplink beam and a second SSB beam as a downlink beam, and the mobility report further indicates a second SINR or CQI associated with using the first SSB beam of the at least one candidate TRP as the downlink beam and the second SSB beam as the uplink beam.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the first power headroom and the second power headroom are based at least in part on a maximum uplink transmit power limited by one or more self-interference measurements associated with the UE.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, process <NUM> includes transmitting, to the UE, information configuring one or more CMRs and one or more self-interference measurement resources based at least in part on the mobility report indicating that the at least one candidate TRP satisfies criteria to be paired in the full-duplex communication mode, receiving, from the UE, one or more candidate downlink and uplink beam pairs to be paired in the full-duplex communication mode based at least in part on measurements of the one or more CMRs and the one or more self-interference measurement resources, and transmitting, to the UE, a final downlink and uplink beam pair to be used for paired TRPs that include the at least one candidate TRP and the serving TRP or another candidate TRP in the full-duplex communication mode.

Claim 1:
A method of wireless communication performed by a user equipment, UE, comprising:
measuring (<NUM>), while communicating with a serving transmit receive point, TRP, in a half-duplex communication mode, one or more synchronization signal block, SSB, beams associated with one or more neighbor TRPs; and
transmitting (<NUM>), to a base station, a mobility report indicating a first TRP based at least in part on determining that an SSB beam transmitted by the first TRP satisfies criteria to be paired in a communication mode with a second TRP different from the first TRP, wherein:
the communication mode includes a first communication direction for the first TRP and a second communication direction for the second TRP different from the first TRP communication direction, and
the communication mode is a full-duplex communication mode or a simultaneous half-duplex multi-TRP, mTRP, communication mode.