Enhanced transmission configuration indicator framework for joint transmission or reception

Abstract

Various aspects of the present disclosure relate to an enhanced transmission configuration indicator (TCI) framework for joint transmission or reception. A beam management procedure is described that includes a single transmission-reception point (TRP) downlink (DL) beam selection phase, followed by a joint DL beam transmitted from multiple TRPs phase, then a user equipment (UE) receive (Rx) beam refinement phase, and then an uplink (UL) transmit (Tx) beam selection refinement phase based on a subset of candidate DL Tx beams in prior phases of the beam management procedure.

Description

ENHANCED TRANSMISSION CONFIGURATION INDICATOR FRAMEWORK FOR JOINT TRANSMISSION OR RECEPTIONRELATED APPLICATION

[0001] This application claims priority to U.S. Patent Application Serial No. 63 / 633,040 filed April 11, 2024 entitled “ENHANCED TRANSMISSION CONFIGURATION INDICATOR FRAMEWORK FOR JOINT TRANSMISSION OR RECEPTION,” the disclosure of which is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to wireless communications, and more specifically to an enhanced transmission configuration indicator (TCI) framework for joint transmission or reception.BACKGROUND

[0003] A wireless communications system may include one or multiple network communication devices, which may be otherwise known as network equipment (NE), supporting wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE), or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers, or the like)). Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G)).SUMMARY

[0004] An article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of’ or“one or more of’ or “one or both of’) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). By way of another example, a list of at least one of A; B; or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on”. Further, as used herein, including in the claims, a “set” may include one or more elements.

[0005] A UE for wireless communication is described. The UE may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the UE may be configured to, capable of, or operable to receive a configuration message for a beam management procedure; receive a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receive a second set of beams from a group of NEs, where the first set of beams is associated with a first set of reference signals (RSs) received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is Quasi-co-located (QCLed) with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receive an indication of a quasi colocation (QCL) relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receive a downlink (DL) signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0006] A processor (e.g., a standalone processor chipset, or a component of a UE) for wireless communication is described. The processor may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the processor may be configured to, capable of, or operable to receive a configuration message for a beam management procedure; receive a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receive a second set of beams from a group of NEs, where the first set of beams is associated with a first set of reference signals RSs received overa first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receive an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receive a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0007] A method performed or performable by a UE for wireless communication is described. The method may include receiving a configuration message for a beam management procedure; receiving a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receiving a second set of beams from a group of NEs, where the first set of beams is associated with a first set of reference signals RSs received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receiving an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receiving a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0008] In some implementations of the UE, the processor, and the method described herein, the first set of RS resources corresponds to at least one of a set of synchronization signal (SS) or physical broadcast channel (PBCH) resources, a set of tracking reference signals (TRSs), a tracking reference signal (TRS) corresponding to a channel state information (CSI)-RS resource set configured with a tracking parameter, or a first set of non-zero power (NZP) CSLRS resources. In some implementations of the UE, the processor, and the method described herein, the second set of RS resources corresponds to at least one of a second set of NZP CSLRS resources, a set of RS resources configured with a joint transmission parameter, or a set of demodulation RSs (DMRSs) for one of a physical downlink shared channel (PDSCH) signaling or a physical downlink control channel (PDCCH) signaling.

[0009] In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to transmit a first report based on a first phase of the beam management procedure; and transmit a second report based on a second phase of the beam management procedure. In some implementations of the UE, processor, and method described herein, the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams.

[0010] In some implementations of the UE, processor, and method described herein, at least one of the first report and the second report corresponds to a channel state information (CSI) report. In some implementations of the UE, processor, and method described herein, the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter. In some implementations of the UE, processor, and method described herein, the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 gigahertz (GHz).

[0011] In some implementations of the UE, processor, and method described herein, an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties. In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to receive the first set of beams during a first phase of the beam management procedure; and receive the second set of beams during a second phase of the beam management procedure.

[0012] In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to receive a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure. In some implementations of the UE, processor, and method described herein, the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams.

[0013] In some implementations of the UE, processor, and method described herein, an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs. In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to transmit one or more uplink (UL) beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs.

[0014] In some implementations of the UE, processor, and method described herein, the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure. In some implementations of the UE, processor, and method described herein, an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam. In some implementations of the UE, processor, and method described herein, a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam.

[0015] In some implementations of the UE, processor, and method described herein, the UL RS comprises a sounding RS (SRS), and the SRS is selected by the group of NE via a resource indicator signaled to the UE. In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to transmit a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a signal to interference-and-noise ratio (SINR) of the corresponding RS.

[0016] An NE (e.g., a base station) for wireless communication is described. The NE may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the NE may be configured to, capable of, or operable to transmit a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of reference signals RSstransmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmit an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmit a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0017] A processor (e.g., a standalone processor chipset, or a component of a NE (e.g., a base station)) for wireless communication is described. The processor may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the processor may be configured to, capable of, or operable to transmit a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of reference signals RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmit an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmit a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0018] A method performed or performable by an NE (e.g., a base station) for wireless communication is described. The method may include transmitting a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of reference signals RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources;transmitting an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmitting a DL signal over a physical channel corresponding, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0019] In some implementations of the NE, the processor, and the method described herein, the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSI-RS resource set configured with a tracking parameter, or a first set of NZP CSI-RS resources. In some implementations of the NE, the processor, and the method described herein, the second set of RS resources corresponds to at least one of a second set of NZP CSI-RS resources, a set of RS resources configured with a joint transmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling.

[0020] In some implementations of the NE, processor, and method described herein, the NE, processor, and method may further be configured to, capable of, performed, performable, or operable to receive a first report based on a first phase of the beam management procedure; and receive a second report based on a second phase of the beam management procedure. In some implementations of the NE, processor, and method described herein, the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams.

[0021] In some implementations of the NE, processor, and method described herein, at least one of the first report and the second report corresponds to a CSI report. In some implementations of the NE, processor, and method described herein, the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter. In some implementations of the NE, processor, and method described herein, the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz.

[0022] In some implementations of the NE, processor, and method described herein, an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties. In someimplementations of the NE, processor, and method described herein, the first set of beams is transmitted during a first phase of the beam management procedure, and the second set of beams is transmitted during a second phase of the beam management procedure.

[0023] In some implementations of the NE, processor, and method described herein, the NE, processor, and method may further be configured to, capable of, performed, performable, or operable to cause, in a third phase, transmission of a repetition of a refined beam, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure. In some implementations of the NE, processor, and method described herein, the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams.

[0024] In some implementations of the NE, processor, and method described herein, an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs. In some implementations of the NE, processor, and method described herein, the NE, processor, and method may further be configured to, capable of, performed, performable, or operable to receive one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs.

[0025] In some implementations of the NE, processor, and method described herein, the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure. In some implementations of the NE, processor, and method described herein, an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam. In some implementations of the NE, processor, and method described herein, a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam.

[0026] In some implementations of the NE, processor, and method described herein, the UL RS comprises a SRS, and the SRS is selected by a group of NE via a resource indicator signaled to a UE. In some implementations of the NE, processor, and method described herein, the NE,processor, and method may further be configured to, capable of, performed, performable, or operable to transmit a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 illustrates an example of a wireless communications system in accordance with aspects of the present disclosure.

[0028] Figure 2 illustrates aperiodic trigger state defining a list of CSI report settings in accordance with aspects of the present disclosure.

[0029] Figure 3 illustrates aperiodic trigger state indicating the resource set and QCL information in accordance with aspects of the present disclosure.

[0030] Figures 4 and 5 illustrate RRC configuration for NZP-CSI-RS / channel state informationinterference measurement (CSI-IM) resources in accordance with aspects of the present disclosure.

[0031] Figure 6 illustrates partial CSI omission physical uplink shared channel (PUSCH)-Based CSI in accordance with aspects of the present disclosure.

[0032] Figure 7 illustrates an example of QCLed beams from two transmission-reception points (TRPs) across the first phase and the second phase in accordance with aspects of the present disclosure.

[0033] Figure 8 illustrates an example of two aggregate beams in accordance with aspects of the present disclosure.

[0034] Figure 9 illustrates an example of a CSI-RS configuration with two additional symbols in accordance with aspects of the present disclosure.

[0035] Figure 10 illustrates an example of a CSI-RS configuration with two additional REs in accordance with aspects of the present disclosure.

[0036] Figure 11 illustrates an example of a UE in accordance with aspects of the present disclosure.

[0037] Figure 12 illustrates an example of a processor in accordance with aspects of the present disclosure.

[0038] Figure 13 illustrates an example of a NE in accordance with aspects of the present disclosure.

[0039] Figures 14 through 17 illustrate flowcharts of methods in accordance with aspects of the present disclosure.DETAILED DESCRIPTION

[0040] For some wireless communications networks (e.g., 6G and beyond), joint transmission and / or reception at the network side may be supported. Joint transmission refers to one or more devices (e.g., different TRPs) transmitting a signal (e.g., the same RS) to a receiving device (e.g., a UE) concurrently or simultaneously (e.g., on different frequencies at the same time, or on the same frequency at the same time). Each of the one or more devices transmits the signal on a different beam, and these one or more beams may be referred to as joint beams. Joint transmission may also be referred to using different terminology, such as coherent transmission, cooperative transmission, and so forth. Joint beams may also be referred to using different terminology, such as coherent beams, cooperative beams, and so forth.

[0041] Joint reception refers to a device (e.g., a UE) receiving a signal (e.g., the same RS) from one or more devices (e.g., different TRPs) concurrently or simultaneously (e.g., on different frequencies at the same time, or on the same frequency at the same time). The UE receives the signal from the one or more devices on one or more different beams, and these one or more beams may be referred to as joint beams. Joint reception may also be referred to using different terminology, such as coherent reception, cooperative reception, and so forth. As indicated above, joint beams may also be referred to using different terminology, such as coherent beams, cooperative beams, and so forth.

[0042] Joint transmission and / or reception at the network side may involve enhancing the legacy NR framework such as one or more of beam management, TCI framework, or RS design or bundling. For instance, in networks where joint transmission from multiple network nodes is supported, the current TCI framework as well as RS structures scale poorly, especially for joint transmission or reception scenarios from more than two network nodes. Moreover, the legacy beammanagement procedure assumed in NR 5G study does not support multi-transmission-reception points (multi-TRP) transmission and / or reception in a seamless manner.

[0043] For example, a 5G NR beam management (BM) procedure may include (1) a DL wide beam selection, followed by (2) a DL narrow beam selection, then (3) a UE Rx beam refinement. A drawback of this procedure is that beam refinement based on a multi-TRP beam requires transmission of all possible combinations of TRPs, leading to issues in case of lack of time and / or frequency synchronization between non-co-located TRPs associated with a joint beam. By way of another example, using a Rel-17 multi-TRP BM framework, the UE may be configured with two beam groups, where the UE selects a beam pair, with one beam per group selected. If this were extended to configuring the UE with K beam groups, where the UE selected a beam K-tuple, there would be significant RS transmission overhead and large CSI payload corresponding to beam reporting. By way of another example, the legacy TCI framework allows for establishing a QCL relationship between a QCL source including two resources and a QCL destination including a single resource. A drawback of this procedure is that the QCL relationship is violated since each of QCL source Resource 1 and Resource 2 are QCLed with the QCL destination resource, however the QCL relationship between Resource 1 and Resource 2 cannot be inferred since the two resources may correspond to non-co-located nodes.

[0044] The techniques discussed herein describe a new beam management framework for next generation wireless networks with enhancements including, that resolve these problems and support joint transmission and / or joint reception. Lor example, an updated BM procedure is described that includes (1) a single-TRP DL beam selection, followed by (2) a joint DL beam transmitted from multiple TRPs, e.g., multi-TRP DL beam selection, then (3) a UE receive (Rx) beam refinement, and then (4) an UL transmit (Tx) beam selection refinement based on a subset of candidate DL Tx beams in prior phases of the updated BM procedure. By way of another example, a novel RS configuration that constitutes a set of joint DL beams is described, where each RS is transmitted from a plurality of non-co-located TRPs. By way of another example, an enhanced TCI framework is described that supports a QCL relationship between a QCL destination corresponding to an RS associated with a joint beam and a QCL source corresponding to a pool of resources, each resource corresponding to a distinct transmission-reception point (TRP), where the QCL relationshipbetween the QCL destination resource and each RS resource in the QCL source is based on a partial QCL relationship.

[0045] Reference is made herein to receiving, transmitting, or communicating data or information, such as signaling communication resources and / or communications that are transmitted or received between devices. It is to be appreciated that other terms may be used interchangeably with communicating, such as signaling, transmitting, receiving, outputting, forwarding, retrieving, obtaining, and so forth. Similarly, other terms may be used interchangeably with transmitting (e.g., communicating, signaling, outputting, forwarding, and so forth), and other terms may be used interchangeably with receiving (e.g., communicating, retrieving, obtaining, and so forth).

[0046] Aspects of the present disclosure are described in the context of a wireless communications system.

[0047] Figure 1 illustrates an example of a wireless communications system 100 in accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more NE 102, one or more UE 104, and a core network (CN) 106. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE- Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a new radio (NR) network, such as a 5G network, a 5G-Advanced (5G-A) network, or a 5G ultrawideband (5G-UWB) network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G, for example, 6G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA), frequency division multiple access (FDMA), or code division multiple access (CDMA), etc.

[0048] The one or more NE 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the NE 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN), a NodeB, an eNodeB (eNB), a next-generation NodeB (gNB), or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.

[0049] An NE 102 may provide a geographic coverage area for which the NE 102 may support services for one or more UEs 104 within the geographic coverage area. For example, an NE 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc.) according to one or multiple radio access technologies. In some implementations, an NE 102 may be moveable, for example, a satellite associated with a nonterrestrial network (NTN). In some implementations, different geographic coverage areas associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with different NE 102.

[0050] The one or more UE 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a receiver device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (loT) device, an Internet-of- Everything (loE) device, or machine-type communication (MTC) device, among other examples.

[0051] A UE 104 may be able to support wireless communication directly with other UEs 104 over a communication link. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.

[0052] An NE 102 may support communications with the CN 106, or with another NE 102, or both. For example, an NE 102 may interface with other NE 102 or the CN 106 through one or more backhaul links (e.g., SI, N2, N6, or other network interface). In some implementations, the NE 102 may communicate with each other directly. In some other implementations, the NE 102 maycommunicate with each other indirectly (e.g., via the CN 106). In some implementations, one or more NE 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs).

[0053] The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC), or a 5G core (5GC), which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management functions (AMF)) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc.) for the one or more UEs 104 served by the one or more NE 102 associated with the CN 106.

[0054] The CN 106 may communicate with a packet data network over one or more backhaul links (e.g., via an SI, N2, N6, or other network interface). The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the CN 106 via an NE 102. The CN 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server using the established session (e.g., the established PDU session). The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g., one or more network functions of the CN 106).

[0055] In the wireless communications system 100, the NEs 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communications). In some implementations, the NEs 102 and the UEs 104 may support different resource structures. For example, the NEs 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the NEs 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G andamong other suitable radio access technologies, the NEs 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures). The NEs 102 and the UEs 104 may support various frame structures based on one or more numerologies.

[0056] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., / r=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., / r=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., / r=l) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., / r=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., / r=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., / r=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.

[0057] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames). Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.

[0058] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., / r=0, jU=l , / r=2, / r=3, / r=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols). In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclicprefix (e.g., applicable for 60 kHz subcarrier spacing), a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., / r=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.

[0059] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz - 7.125 GHz), FR2 (24.25 GHz - 52.6 GHz), FR3 (7.125 GHz - 24.25 GHz), FR4 (52.6 GHz - 114.25 GHz), FR4a or FR4-1 (52.6 GHz - 71 GHz), and FR5 (114.25 GHz - 300 GHz). In some implementations, the NEs 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the NEs 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data). In some implementations, FR2 may be used by the NEs 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.

[0060] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies). For example, FR1 may be associated with a first numerology (e.g., / r=0), which includes 15 kHz subcarrier spacing; a second numerology (e.g., / r=l), which includes 30 kHz subcarrier spacing; and a third numerology (e.g., / r=2), which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies). For example, FR2 may be associated with a third numerology (e.g., / r=2), which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., / r=3), which includes 120 kHz subcarrier spacing.

[0061] In the wireless communications system, a NE (e.g., a base station) configures a UE 104 for joint transmission and / or joint reception from multiple NE (e.g., non-co-located TRPs). In one phase of a CSI measurement and reporting framework, the NE 102 configures the UE 104 with CSI measurement and reporting corresponding to DL beam management parameters, and one or more CSI reports are transmitted by the UE 104. The NE (e.g., a base station) also configures the UE 104to map a joint RS associated with (e.g., signals received from) multiple TRPs to a conventional RS associated with a single TRP.

[0062] For CSI reporting the codebook report is partitioned into two parts based on the priority of information reported. Each part is encoded separately (Part 1 has a possibly higher code rate). Listed below are the parameters for NR Rel. 16 Type-II codebook.

[0063] For content of a CSI report:

[0064] Part 1 : rank indicator (RI) + channel quality indicator (CQI) + Total number of coefficients

[0065] Part 2: spatial domain (SD) basis indicator + frequency domain (FD) basis indicator / layer + Bitmap / layer + Coefficient Amplitude info / layer + Coefficient Phase info / layer + Strongest coefficient indicator / layer

[0066] Furthermore, Part 2 CSI can be decomposed into sub-parts each with different priority (higher priority information listed first). Such partitioning is required to allow dynamic reporting size for codebook based on available resources in the uplink phase.

[0067] Also Type-II codebook is based on aperiodic CSI reporting, and only reported in PUSCH via downlink control information (DCI) triggering (one exception). Type-I codebook can be based on periodic CSI reporting (e.g., physical uplink control channel (PUCCH)) or semi- persistent CSI reporting (PUSCH or PUCCH) or aperiodic reporting (PUSCH).

[0068] For priority reporting for CSI Part 2, note that multiple CSI reports may be transmitted with different priorities, as shown in Table 1 below. The priority of the NRepCSI reports are based on the following:

[0069] A CSI report corresponding to one CSI reporting setting for one cell may have higher priority compared with another CSI report corresponding to one other CSI reporting setting for the same cell.

[0070] CSI reports intended to one cell may have higher priority compared with other CSI reports intended to another cell.

[0071] CSI reports may have higher priority based on the CSI report content. For example, CSI reports carrying Layer 1 reference signal received power (Ll-RSRP) information have higher priority.

[0072] CSI reports may have higher priority based on their type. For example, whether the CSI report is aperiodic, semi-persistent or periodic, and whether the report is sent via PUSCH or PUCCH, may impact the priority of the CSI report.

[0073] In light of these, CSI reports may be prioritized as follows, where CSI reports with lower identifiers (IDs) have higher priority:Priics / (y, k, c, s) = 2 ■ Ncells■ Ms■ y + Ncells■ Ms■ k + Ms■ c + s s: CSI reporting setting index, and MsMaximum number of CSI reporting settings c: Cell index, and Neelis'- Number of serving cells k: 0 for CSI reports carrying Ll-RSRP or Layer 1 signal-to-interference-and-noise ratio (Ll-SINR), 1 otherwise; y: 0 for aperiodic reports, 1 for semi-persistent reports on PUSCH, 2 for semi-persistent reports on PUCCH, 3 for periodic reports.Table 1: Priority Reporting Levels for Part 2 CSI

[0074] For triggering aperiodic CSI reporting on PUSCH, a UE is to report the CSI information for the network using the CSI framework in NR Release 15. The triggering mechanism between a report setting and a resource setting can be summarized in Table 2 below.Table 2: Triggering mechanism between a report setting and a resource setting

[0075] Moreover,• All associated Resource Settings for a CSI Report Setting are to have same time domain behavior.• Periodic CSI-RS / interference management (IM) resource and CSI reports are always assumed to be present and active once configured by RRC• Aperiodic and semi-persistent CSI-RS / IM resources and CSI reports needs to be explicitly triggered or activated.• Aperiodic CSI-RS / IM resources and aperiodic CSI reports, the triggering is done jointly by transmitting a DCI Format 0- 1.• Semi-persistent CSI-RS / IM resources and semi-persistent CSI reports are independently activated.

[0076] Figure 2 illustrates at 200 aperiodic trigger state defining a list of CSI report settings in accordance with aspects of the present disclosure. For aperiodic CSI-RS / IM resources and aperiodic CSI reports, the triggering is done jointly by transmitting a DCI Format 0-1. The DCI Format 0_l contains a CSI request field (0 to 6 bits). A non-zero request field points to a so-called aperiodic trigger state configured by RRC (see, e.g., Figure 5). An aperiodic trigger state in turn is defined as a list of up to 16 aperiodic CSI Report Settings, identified by a CSI Report Setting ID for which the UE calculates simultaneously CSI and transmits it on the scheduled PUSCH transmission.

[0077] When the CSI Report Setting is linked with aperiodic Resource Setting (can comprise multiple Resource Sets), the aperiodic NZP CSI-RS Resource Set for channel measurement, the aperiodic CSI-IM Resource Set (if used) and the aperiodic NZP CSI-RS Resource Set for IM (if used) to use for a given CSI Report Setting are also included in the aperiodic trigger state definition. For aperiodic NZP CSI-RS, the quasi co-location (QCL) source to use is also configured in the aperiodic trigger state. The UE assumes that the resources used for the computation of the channel and interference can be processed with the same spatial filter e.g., quasi-co-located with respect to “QCL-TypeD.”

[0078] Figure 3 illustrates at 300 aperiodic trigger state indicating the resource set and QCL information in accordance with aspects of the present disclosure. Figures 4 and 5 illustrate RRC configuration for NZP-CSI-RS / CSI-IM resources in accordance with aspects of the present disclosure. For instance, 400 illustrates RRC configuration for NZP-CSI-RS Resource and 500 illustrates RRC configuration for CSI-IM-Resource.

[0079] Table 3 summarizes the type of uplink channels used for CSI reporting as a function of the CSI codebook type.Table 3: Uplink channels used for CSI reporting as a function of the CSI codebook type

[0080] Figure 6 illustrates at 600 partial CSI omission PUSCH-Based CSI in accordance with aspects of the present disclosure. Figure 6 illustrates, for example, Rel. 15 PUSCH-Based CSI. For aperiodic CSI reporting, PUSCH-based reports are divided into two CSI parts: CSI Parti (illustrated at 602(1), 602(2), and 602(3)) and CSI Part 2 (illustrated at 604(1), 604(2), and 604(3)). The reason for this is that the size of CSI payload varies significantly, and therefore a worst-case uplink control information (UCI) payload size design would result in large overhead. CSI Part 1 has a fixedpayload size (and can be decoded by the gNB without prior information) and contains the following:• RI (if reported), channel state information reference signal (CRI) (if reported) and CQI for the first codeword,• number of non-zero wideband amplitude coefficients per layer for Type II CSI feedback on PUSCH.

[0081] CSI Part 2 has a variable payload size that can be derived from the CSI parameters in CSI Part 1 and contains precoder matrix indicator (PMI) and the CQI for the second codeword when RI > 4. For example, if the aperiodic trigger state indicated by DCI format 0_l defines 3 report settings x, y, and z, then the aperiodic CSI reporting for CSI part 2 will be ordered as indicated at 606 in Figure 6.

[0082] As mentioned above, CSI reports are prioritized according to:1. time-domain behavior and physical channel, where more dynamic reports are given precedence over less dynamic reports and PUSCH has precedence over PUCCH.2. CSI content, where beam reports (e.g., Ll-RSRP reporting) has priority over regular CSI reports.3. the serving cell to which the CSI corresponds (in case of carrier aggregation (CA) operation). CSI corresponding to the Pcell has priority over CSI corresponding to Scells.4. the reportConfigID.

[0083] With respect to the beam management framework, BM procedures including three processes have been considered. A first process (e.g., referred to as Pl) is beam selection, where the gNB sweeps TRP beam, and UE sweeps UE beam and selects a best one (e.g., best TRP beam measured by the best UE beam) and reports it to gNB. A second process (e.g., referred to as P2) is Beam Refinement for the transmitter (e.g., gNB Tx), where the gNB refines beam (e.g., sweeping narrower beam over narrower range) and UE detects the best one and reports it to the gNB. A third process (e.g., referred to as P3) is Beam Refinement for the receiver (e.g., UE Rx), where the gNB fixes a beam (transmits the same beam repeatedly) and UE refines its receiver beam. It also sets thespatial filter on receiver antenna array. This is used, for example, only when the UE supports beamforming.

[0084] For CSI reporting with a report quantity including at least one of CRI, SS / PBCH block resource index (SSBRI), Ll-RSRP, or Capability index, if groupBasedBeamReporting is set to 'disabled', the UE reports K’ values of each report quantity. If groupBasedBeamReporting is set to 'enabled', the UE reports 2 values of each report quantity for each CSI report setting, where the CSI- RS or synchronization signal block (SSB) are received simultaneously at the UE by a same Rx spatial filter or multiple simultaneous Rx spatial filters. If the UE is configured with groupBasedBeamReporting-rl7 , the UE reports K groups of two values of each report quantity, with one CRI or SSBRI selected from each of the two CSI Resource Sets for the report setting, where the CSI-RS or SSB can be received simultaneously at the UE. If the UE is configured with groupBasedBeamReporting-vl8 set to JointULandDL, the UE reports K groups of two values of each report quantity, with one CRI or SSBRI selected from each of the two CSI Resource Sets for the report setting, where the CSI-RS or SSB can be received simultaneously at the UE and applied for simultaneous transmission with Rx spatial filters and Tx spatial filters at the UE, respectively, subject to UE capability. If the UE is configured with groupBasedBeamReporting-vl8 set to ULOnly, the UE reports K groups of two values of each report quantity, with one CRI or SSBRI selected from each of the two CSI Resource Sets for the report setting, where the CSI-RS or SSB can be applied for simultaneous UL transmission with Tx spatial filter at the UE, subject to UE capability

[0085] For report quantities including RSRP, the UE is need not update measurements for more than 64 CSI-RS and / or SSB resources. When the UE is configured with a CSI-ReportConfig with the higher layer parameter reportQuantity set to ' cri-RSRP- Index' or 'ssb-Index-RSRP- Index' an index of UE capability value set, indicating the maximum supported number of SRS antenna ports, is reported along with the pair of SSBRI / CRI and Ll-RSRP.

[0086] Aspects of the techniques discussed herein include and / or are directed to antenna panels and / or ports, quasi-collocation, TCI state, and spatial relation. In implementations described herein, the terms antenna, panel, and antenna panel are used interchangeably. An antenna panel may be hardware that is used for transmitting and / or receiving radio signals at frequencies lower than 6GHz (e.g., frequency range 1 (FR1)), or higher than 6GHz (e.g., frequency range 2 (FR2)) or millimeterwave (mmWave). In some implementations, an antenna panel includes an array of antenna elements, where each antenna element is connected to hardware, such as a phase shifter that allows a control module to apply spatial parameters for transmission and / or reception of signals. The resulting radiation pattern is called a beam, which may or may not be unimodal and allows the device to amplify signals that are transmitted or received from spatial directions.

[0087] In one or more implementations, an antenna panel may be virtualized as an antenna port in the specifications. An antenna panel can be connected to a baseband processing module through a radio frequency (RF) chain for each of transmission (egress) and reception (ingress) directions. A capability of a device in terms of the number of antenna panels, their duplexing capabilities, their beamforming capabilities, and so on, may or may not be transparent to other devices. In some implementations, capability information is communicated via signaling or, in some implementations, capability information is provided to devices without a need for signaling. In the event that such information is available to other devices, it can be used for signaling or local decision making.

[0088] In one or more implementations, a device (e.g., a UE, a NE) antenna panel may be a physical or logical antenna array including a set of antenna elements or antenna ports that share a common or a significant portion of an RF chain (e.g., in-phase / quadrature (EQ) modulator, analog to digital (A / D) converter, local oscillator, phase shift network). The device antenna panel (or device panel) may be a logical entity with physical device antennas mapped to the logical entity. The mapping of physical device antennas to the logical entity can be based on device implementation. Communicating (e.g., receiving or transmitting) on at least a subset of antenna elements or antenna ports active for radiating energy (also referred to herein as active elements) of an antenna panel requires biasing or powering of the RF chain, which results in current drain or power consumption in the device associated with the antenna panel, including power amplifier and / or low noise amplifier (LNA) power consumption associated with the antenna elements or antenna ports. The phrase “active for radiating energy,” as used herein is not meant to be limited to a transmit function, but also encompasses a receive function. Accordingly, an antenna element that is active for radiating energy may be coupled to a transmitter to transmit radio frequency energy or to a receiver to receive radio frequency energy, either simultaneously or sequentially, or may becoupled to a transceiver in general, for performing its intended functionality. Communicating on the active elements of an antenna panel enables generation of radiation patterns or beams.

[0089] In one or more implementations, and depending on the particular device implementation, a device panel can have at least one of the following functionalities as an operational role: a unit of an antenna group to control its transmit beam independently, a unit of an antenna group to control its transmission power independently, and / or a unit of an antenna group to control its transmission timing independently. The device panel may be transparent to a gNB. For certain condition(s), a gNB or a network node can assume the mapping between the physical antennas of a device to the logical entity “device panel” may not be changed. For example, the condition may include until the next update or report from a device, or include a duration of time over which the gNB assumes there will be no change to the mapping. A device may report its capability with respect to the device panel to the gNB or network. The device capability can include at least the number of device panels. In an implementation, the device may support UL transmission from one beam within a panel, and with multiple panels, more than one beam (e.g., one beam per panel) may be used for UL transmission. In another implementation, more than one beam per panel may be supported or used for UL transmission.

[0090] In some described implementations, an antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.

[0091] Two antenna ports are quasi co-located (QCL) if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. The large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and / or spatial receive parameters. Two antenna ports may be quasi-located with respect to a subset of the large-scale properties, and a different subset of large-scale properties can be indicated by a QCL type. The QCL type can indicate which channel properties are the same between the two reference signals (e.g., on the two antenna ports). Thus, the reference signals can be linked to each other with respect to what the UE can assume about their channel statistics or QCL properties. For example, the QCL- type can be one of the following values: QCL-TypeA: {Doppler shift, Doppler spread, averagedelay, delay spread}; QCL-TypeB: {Doppler shift, Doppler spread}; QCL-TypeC: {Doppler shift, average delay}; QCL-TypeD: {Spatial Rx parameter}.

[0092] Spatial receive parameters can include one or more of angle of arrival (AoA,) dominant AoA, average AoA, angular spread, power angular spectrum (PAS) of AoA, average AoD (angle of departure), PAS of AoD, transmit and / or receive channel correlation, transmit and / or receive beamforming, spatial channel correlation, etc. The QCL-TypeA, QCL-TypeB and QCL-TypeC may be applicable for all carrier frequencies, but the QCL-TypeD may be applicable only in higher carrier frequencies (e.g., mmWave, FR2 and beyond), where essentially the UE may not be able to perform omni-directional transmission (e.g., the UE would need to form beams for directional transmission). For a QCL-TypeD between two reference signals A and B, the reference signal A is considered to be spatially co-located with reference signal B and the UE may assume that the reference signals A and B can be received with the same spatial filter (e.g., with the same receive (Rx) beamforming weights).

[0093] As described in this disclosure, an antenna port may be a logical port that corresponds to a beam (resulting from beamforming), or may correspond to a physical antenna on a device. In one or more implementations, a physical antenna can map directly to a single antenna port, in which an antenna port corresponds to an actual physical antenna. Alternately, a set or subset of physical antennas, or an antenna set or antenna array or antenna sub-array, may be mapped to one or more antenna ports after applying complex weights, a cyclic delay, or both to the signal on each physical antenna. The physical antenna set may have antennas from a single module or panel, or from multiple modules or panels. The weights may be fixed as in an antenna virtualization scheme, such as cyclic delay diversity (CDD). The procedure used to derive antenna ports from physical antennas may be specific to a device implementation and transparent to other devices.

[0094] In some described implementations, a TCLstate associated with a target transmission can indicate parameters for configuring a quasi-collocation relationship between the target transmission (e.g., a target RS of DM-RS ports of the target transmission during a transmission occasion) and one or more source reference signals (e.g., SSB, CSLRS, and / or sounding reference signal (SRS)) with respect to quasi co-location type parameters indicated in the corresponding TCI state. The TCI describes which reference signals are used as a QCL source, and what QCL properties can be derived from each reference signal. A device can receive a configuration of aplurality of transmission configuration indicator states for a serving cell for transmissions on the serving cell. In some of the described implementations, a TCI state includes at least one source RS to provide a reference (UE assumption) for determining QCL and / or a spatial filter.

[0095] In one or more implementations, spatial relation information associated with a target transmission can indicate parameters for configuring a spatial setting between the target transmission and a reference RS (e.g., SSB, CSI-RS, and / or SRS). For example, the device can transmit the target transmission with the same spatial domain filter used for reception of the reference RS (e.g., DL RS such as SSB or CSI-RS). In another example, the device may transmit the target transmission with the same spatial domain transmission filter used for the transmission of the reference RS (e.g., UL RS, such as SRS). A device can receive a configuration of multiple spatial relation information configurations for a serving cell for transmissions on the serving cell.

[0096] In some described implementations, an UL TCI state is provided if a device is configured with separate DL / UL TCI by RRC signaling. The UL TCI state can include a source reference signal which provides a reference for determining an UL spatial domain transmission filter for the UL transmission (e.g., dynamic-grant or configured-grant based PUSCH, dedicated PUCCH resources) in a CC, or across a set of configured CCs and / or BWPs.

[0097] In some described implementations, a joint DL / UL TCI state is provided if the device is configured with joint DL / UL TCI by RRC signaling (e.g., configuration of joint TCI or separate DL / UL TCI is based on RRC signaling). The joint DL / UL TCI state refers to at least a common source reference RS used for determining both the DL QCL information and the UL spatial transmission filter. The source RS determined from the indicated joint (or common) TCI state provides a QCL Type-D indication (e.g., for device-dedicated PDCCH and / or PDSCH) and is used to determine UL spatial transmission filter (e.g., for UE-dedicated PUSCH and / or PUCCH) for a CC, or across a set of configured CCs and / or BWPs. In an example, the UL spatial transmission filter is derived from the RS of DL QCL Type-D in the joint TCI state. The spatial setting of the UL transmission may be according to the spatial relation with a reference to the source RS configured with qcl-Type set to “typed” in the joint TCI state.

[0098] In the following discussion, the following notions or terminology is used interchangeably: network nodes, transmit-receive point (TRP), panel, set of antennas, set of antennaports, uniform linear array, cell, node, radio head, communication (e.g., signals / channels) associated with a CORESET (control resource set) pool, and communication associated with a TCI state from a transmission configuration including at least two TCI states.

[0099] Additionally, a TRS corresponds to an NZP CSI-RS resource set with a parameter ‘trs- info’ being configured.

[0100] Furthermore, a CSI-RS for CSI corresponds to an NZP CSI-RS resource set with neither parameters ‘trs-info’ nor ‘repetition ’ being configured.

[0101] Additionally, a matrix implies a sequence of fields of an arbitrary dimension, including an array (vector) of values, a standard 2D matrix and more generally a -dimensional matrix (tensor) where Q>2 is an integer value.

[0102] In addition, a CSI framework or procedure associated with up to 3GPP Release 18 is referred to as legacy behavior.

[0103] Several implementations (and examples) are described below. It is to be appreciated that one or more elements or features from one or more of the described implementations (or examples) can be combined.

[0104] The techniques discussed herein describe a CSI measurement and reporting framework that can be performed in multiple phases. In a first phase (which may also be referred to as phase 1 or Pl) single-TRP beam selection is performed. In a second phase (which may also be referred to as phase 2 or P2) multi-TRP beam selection is performed. In a third phase (which may also be referred to as phase 3 or P3) UE Rx DL beam refinement is performed. In a fourth phase (which may also be referred to as phase 4 or P4) UE Tx UL beam selection is performed.

[0105] In the first phase of the CSI measurement and reporting framework (e.g., single-TRP beam selection), the network (e.g., a NE such as a base station) configures a UE with CSI measurement and reporting corresponding to DL beam management parameters, and one or more CSI reports are transmitted by the UE to the network. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0106] The UE is configured with a CSI Reporting Setting, where the CSI Reporting Setting is associated with a CSI Resource Setting including a set of NZP CSI-RS resources for BM, SS / PBCH, or a combination thereof. In one example, the CSI reporting setting is associated with a report quantity including at least one of ‘CRI,’ ‘SSBRI,’ ‘Ll-RSRP’ and ‘Ll-SINR’. In another example, the CSI reporting setting is associated with a CSI resource setting whose time-domain behavior, e.g., resource type, set to one of periodic or semi -persistent, where the CSI resource setting is associated with a first CSI resource periodicity. In another example, the CSI reporting setting is associated with a time-domain behavior, e.g., reporting configuration type, set to one of periodic or semi-persistent reporting, where the CSI reporting setting is associated with a first CSI reporting periodicity.

[0107] The CSI measurement and reporting framework includes multiple phases, where the first phase, corresponding to Pl, is based on the network transmitting a first set of beams, e.g., K beams, to the UE. In one example, the K beams correspond to K distinct CSI-RS resources with a single port, the K CSI-RS resources are associated with a same CSI-RS resource set. In another example, the K beams correspond to K distinct SSB resources. In another example, the K beams correspond to K distinct TRSs, e.g., CSI-RS resource sets configured with ‘trs-info.’ In another example, the K beams are transmitted from M non-co-located TRPs, where M < K. In another example, each beam of the K beams is transmitted from only one TRP of the M non-co-located TRPs.

[0108] After receiving the K beams, the UE feeds back a first CSI report including beam indicators corresponding to a selected subset K’ beams of the K beams. In one example, the beam indicators correspond to SSBRI values, CRI values, or a combination thereof. In another example, the value of K’ is 1,2. The value of K’ may be up to 4,6,8. In general, K’ < K. In another example, each SSBI value or CRI value, is associated with one of an RSRP value, an SINR value, or an order index (ascending or descending with respect to beam preference). In another example, each SSBI value or CRI value is associated with a panel index, a group index, or a combination thereof. In some examples, at least one SSBRI value or CRI value is reported for each panel or group corresponding to a panel index or a group index, respectively.

[0109] Additionally or alternatively, the first phase corresponds to an initial access procedure pursued via SSB transmission and where after receiving the K beams the UE transmits one or more physical random access channel (PRACH) transmissions, e.g., RACH preamble, e.g., no CSIreports are transmitted by the UE to the network. An indication of a selected beam can be inferred, determined, or otherwise identified from the RACH preamble.

[0110] In the second phase of the CSI measurement and reporting framework (e.g., multi-TRP beam selection), the network (e.g., a NE such as a base station) configures a UE with CSI measurement and reporting corresponding to DL beam management parameters, and one or more CSI reports are transmitted by the UE. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0111] The second phase of the CSI measurement and reporting framework corresponds to a second set of CSI Reporting Setting parameters. In one implementation, the second set of CSI reporting setting parameters corresponds to a second CSI reporting setting, where a first CSI reporting setting corresponds to the first phase of the CSI measurement and reporting framework. In another implementation, the second set of CSI reporting setting parameter corresponds to a second CSI reporting sub-configuration of the CSI reporting setting, where a first CSI reporting subconfiguration of the CSI reporting setting corresponds to the first phase of the CSI measurement and reporting framework.

[0112] In one example, the second set of CSI Reporting setting parameters is associated with a second CSI reporting periodicity, where a value of the second CSI reporting periodicity is longer than a value of the first CSI reporting periodicity associated with the first set of CSI reporting parameters. In another example, a reporting configuration type of the CSI reporting associated with the second set of CSI reporting setting parameters is the same as the reporting configuration type of the CSI reporting associated with the second set of CSI reporting setting parameters. In another example, a value of a report quantity associated with the second set of CSI reporting setting parameters is the same as a value of the report quantity associated with the first set of CSI reporting setting parameters. In another example, the second set of CSI reporting setting parameters is associated with a second CSI resource periodicity, where a value of the second CSI resource periodicity is longer than or equal to a value of the first CSI resource periodicity associated with the first set of CSI reporting parameters. In another example, a resource type of a second CSI resource setting associated with the second set of CSI reporting setting parameters is the same as the resource type of the first CSI resource setting associated with the first set of CSI reporting setting parameters.

[0113] Furthermore, the second phase of the CSI measurement and reporting framework, corresponding to P2, is based on the network transmitting a second set of beams, e.g., L beams, to the UE, where the L beams are based on the first set of beams and the first CSI report. In one example, the L beams correspond to L distinct Joint Reference Signal (JRS) resources. In another example, the L beams are transmitted from up to M ’ non-co-located TRPs, where M’ < M. In another example, each beam of the L beams is transmitted from one or more of the M ’ non-co- located TRPs. In another example, each beam of the L beams is transmitted from two or more non- co-located TRPs, and where beams corresponding to one TRP are associated with a beams in the first phase of the CSI measurement and reporting framework. In another example, beams in the second set of beams are ordered with respect to a number of co-located TRPs associated with each beam, e.g., a beam with index value ‘1’ is associated with two non-co-located TRPs, a beam with index ‘2’ is associated with three non-co-located TRPs, a beam with index ‘3’ is associated with three non-co-located TRPs and a beam with index ‘4’ is associated with four non-co-located TRPs.

[0114] A QCL relationship between two beams is implied by a QCL relationship between two RSs or two RS resources associated with the two beams, e.g., if a first beam and a second beam are quasi-co-located (QCLed), a first RS or a first RS resource associated with the first beam is QCLed with a second RS or a second RS resource associated with the second beam.

[0115] In one or more implementations, each beam in the second set of beams is quasi-co- located, e.g., QCLed, with a group of beams in the first set of beams. For example, a beam in the second set of beams is QCLed with a group of beams in the first set of beams, where the group of beams comprises two beams in the first set of beams. Note that the beam in the second set of beams would then be partially QCLed with the group of beams in the first set of beams, e.g., each beam in the group of beams share partial characteristics with the beam in the second set of beams.

[0116] In one example, a beam in the second set of beams is QCLed with two or more beams in the first set of beams, e.g., via QCL Type C, corresponding to a QCL with respect to Doppler shift and average delay. In another example, the beam in the second set of beams is additionally QCLed with the two or more beams in the first set of beams via QCL Type D, corresponding to a QCL with respect to a spatial receiver parameter. In another example, the beam in the second set of beams in an aggregation of two or more sub-beams, each sub-beam in the two or more sub-beams has a narrower beamwidth, e.g., 3 decibel (dB) beamwidth, than a corresponding beam in the two or morebeams in the first set of beams. In some examples, the two or more sub-beams are one-to-one mapped to the two or more beams in the first set of beams, where the two or more beams in the first set of beams are associated with a same panel index or a group index.

[0117] Figure 7 illustrates an example 700 of QCLed beams from two TRPs across the first phase and the second phase in accordance with aspects of the present disclosure. Figure 7 illustrates an example of the QCLed beams across the first set of beams and the second set of beams, where each of TRP 702 (TRP#1) and TRP 704 (TRP#2) transmits a wide beam 706 and 708, respectively, in Pl as illustrated at 710, followed by a narrower beam 712 and 714, respectively, in P2 as illustrated at 716. The narrow beam 712 in P2 is QCLed with its corresponding beam 706 in Pl, and the narrow beam 714 in P2 is QCLed with its corresponding beam 708 in PL It should be noted that based on the knowledge of the location and orientation information of the TRPs associated with the first set of beams in addition to the knowledge of a set of channel measurements, e.g., RSRP, SINR, and pathloss, associated with both the first set of beams and the second set of beams, the network may be able to determine a rough estimate of the UE 718 location, conditioned that the dominant path between the UE 718 and the TRPs 702 and 704 are LoS paths. As mentioned, this helps provide a low-resolution localization precision and may not be a standalone localization procedure.

[0118] Figure 8 illustrates an example 800 of two aggregate beams in accordance with aspects of the present disclosure. The example 800 illustrates an aggregate beam 802 that is made up of two narrow beams 804 and 806 from two different TRPs (illustrated as TRP 808 (TRP#1) and TRP 810 (TRP#3), respectively), and an aggregate beam 812 that is made up of two narrow beams 814 and 816 from two different TRPs (illustrated as TRP 818 (TRP#2) and TRP 820 (TRP#4), respectively). From the UE 822 perspective, the received beam in P2 is an aggregation of two or more narrow beams transmitted from two or more TRPs, e.g., the aggregate beam has a larger beamwidth compared with the per TRP beam.

[0119] After receiving the L beams, the UE feeds back a second CSI report including beam indicators corresponding to a selected subset L’ beams of the L beams. In one example, the beam indicators correspond to CRI values or JRS Resource Indicator (JRI) values. In another example, the value of L’ is 1,2. The value of L’ is up to 4. In general, L’ < L. In another example, each CRI value or JRI value of the L ’ CRI values or JRI values is associated with one of an RSRP value, an SINR value, or an order index, the order index is descending with respect to beam preference. Inanother example, the second CSI report does not comprise a CRI, and an indication that no beam in the second set of beams has a higher RSRP value, SINR value, or any other favorable merit value, than a beam with a reported beam index in the first CSI report, at least by a threshold value, is reported. The threshold may be configured by the network or a fixed value known to both the network and the UE. In another example, a field corresponding to the CRI value in the second CSI report comprises a codepoint that corresponds to null, e.g., no beam in the second set of beams is selected, which may indicate that no beam in the second set of beams has a higher RSRP value, SINR value, or any other favorable merit value, than a beam with a reported beam index in the first CSI report, at least by a threshold value. In another example, a field corresponding to the CRI value in the second CSI report comprises a codepoint that corresponds to a beam in the first set of beams, e.g., indicating that the UE is selecting a beam in the first set of beams that is desired over beams in the second set of beams. In another example, a field corresponding to the CRI value in the second CSI report corresponds to one of a beam in the second set of beams, or a sub-beam in the two or more sub-beams.

[0120] With respect to JRS, a beam in the second set of beams associated with the second phase of the CSI measurement and reporting framework may be transmitted from multiple non-co-located TRPs. The second set of beams can be referred to as RSs over a corresponding set of JRS resources. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0121] In one or more implementations, the second set of beams correspond to CSI-RSs associated with a second pool of NZP CSI-RS resources, where the first set of beams correspond to CSI-RSs associated with a first pool of NZP CSI-RS resources. In one example, the second pool of NZP CSI-RS resources are configured with a parameter corresponding to joint transmission, a partial QCL relationship, decentralized transmission, or a combination thereof. In another example, the second pool of NZP CSI-RS resources is associated with a distinct NZP CSI-RS resource set. In another example, each beam in the second set of beams is associated with a CSI-RS resource in the second pool of NZP CSI-RS resources. In another example, a CSI-RS resource corresponding to the second pool of NZP CSI-RS resources is associated with one or more additional CSI-RS symbols, where each TRP of the non-co-located TRPs is associated with at least one of a CSI-RS symbol and the one or more additional CSI-RS symbols. In another example, a CSI-RS resource correspondingto the second pool of NZP CSI-RS resources is associated with one or more additional REs, where each TRP of the non-co-located TRPs is associated with at least one of a CSI-RS RE and the one or more additional REs. In another example, a CSI-RS resource corresponding to the second pool of NZP CSI-RS resources is associated with multiple RBs, where each TRP of the non-co-located TRPs is associated with a distinct group of RBs of the multiple RBs. In another example, a CSI-RS resource corresponding to the second pool of NZP CSI-RS resources is associated with one or more CSI-RS ports, where each TRP of the non-co-located TRPs is associated with a distinct CSI-RS port of the one or more CSI-RS ports.

[0122] Figure 9 illustrates an example 900 of a CSI-RS configuration with two additional symbols in accordance with aspects of the present disclosure. The example 900 illustrates an example resource grid in which a CSI-RS resource (illustrated with diagonal lines from bottom left to top right 902) corresponding to the second pool of NZP CSI-RS resources is associated with one or more additional CSI-RS symbols (illustrated with diagonal lines from top left to bottom right 904 and crosshatching 906), where each TRP of the non-co-located TRPs is associated with at least one of a CSI-RS symbol and the one or more additional CSI-RS symbols. Other (e.g., non-CSI-RS) resources are illustrated at 908.

[0123] Figure 10 illustrates an example 1000 of a CSI-RS configuration with two additional REs in accordance with aspects of the present disclosure. The example 1000 illustrates an example resource grid in which a CSI-RS resource (illustrated with diagonal lines from bottom left to top right 1002) corresponding to the second pool of NZP CSI-RS resources is associated with one or more additional REs (illustrated with diagonal lines from top left to bottom right 1004 and crosshatching 1006), where each TRP of the non-co-located TRPs is associated with at least one of a CSI-RS RE and the one or more additional REs. Other (e.g., non-CSI-RS) resources are illustrated at 1008.

[0124] Additionally or alternatively, the second set of beams correspond to a distinct group of RSs, e.g., the distinct group of JRSs are associated with multiple symbol groups, each symbol group of the multiple symbol groups is associated with a distinct TRP. In one example, the JRSs are transmitted over a plurality of resources, e.g., JRS resources, the plurality of resources form a resource set, e.g., JRS resource set. In another example, two symbol groups are associated with two distinct symbols spanning a slot, e.g., a first symbol in the slot comprises RSs corresponding to afirst symbol group and a second symbol in the slot comprises RSs corresponding to a second symbol group. In another example, two symbol groups are associated with two distinct symbols spanning two slots, e.g., a first symbol in a first slot comprises RSs corresponding to a first symbol group and a second symbols in a second slot comprises RSs corresponding to a second symbol group. In another example, two symbol groups are associated with two distinct REs spanning an RB, e.g., a first RE in the RB comprises RSs corresponding to a first symbol group and a second RE in the RB comprises RSs corresponding to a second symbol group. In another example, two symbol groups are associated with two distinct REs spanning two RBs, e.g., a first RE in a first RB comprises RSs corresponding to a first symbol group and a second RE in a second RB comprises RSs corresponding to a second symbol group. In another example, two symbol groups are associated with two distinct ports of an JRS resource, e.g., a first port of the JRS resource comprises RSs corresponding to a first symbol group and a second port of the JRS resource comprises RSs corresponding to a second symbol group. In another example, two symbol groups are associated with two port groups of an JRS resource, e.g., a first port group of the JRS resource comprises RSs corresponding to a first symbol group and a second port of the JRS resource comprises RSs corresponding to a second symbol group. Each port group is associated with a distinct CDM group.

[0125] With respect to the TCI framework, to enable mapping RSs of different type, an enhanced TCI framework is used to map a joint RS associated with multiple TRPs to a conventional RS associated with a single TRP. A beam in the second set of beams associated with the second phase of the CSI measurement and reporting framework may be transmitted from multiple non-co- located TRPs. A mapping of the RSs is applied via establishing QCL relations between the RSs, where different features or characteristics of the QCL relationship are introduced. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0126] In one or more implementations, a QCL relationship between a joint RS and a conventional RS is based on a partial QCL relationship. In one example, a partial QCL relationship between a QCL source, e.g., conventional RS, and a QCL destination, e.g., joint RS, implies that a subset of the characteristics of the QCL destination are inferred, determined, or otherwise identified from characteristics of the QCL source. In another example, a QCL destination, e.g., joint RS, is partially QCLed with a QCL source corresponding to multiple conventional RSs occupyingmultiple RS resources. In another example, the partial QCL relationship is inferred, determined, or otherwise identified via a higher-layer parameter within a QCL information configuration. In another example, the partial QCL relationship applies to QCL Type C. In another example, the partial QCL relationship is not applicable to QCL Type D. In another example, the QCL source corresponds to a TRS, an NZP CSLRS resource, an SS or PBCH resource, or a combination thereof. In another example, the QCL destination corresponds to a NZP CSLRS resource configured with joint transmission, a DMRS corresponding to PDSCH transmission, or a combination thereof.

[0127] It should be noted that a QCL destination including a joint RS that is QCLed with a QCL source including two conventional RSs does not imply that a first of the two conventional RSs and a second of the two conventional RSs are QCLed.

[0128] Additionally or alternatively, a QCL destination, e.g., a joint RS is QCLed with a QCL source including a list of RSs, e.g., conventional RSs, where the conventional RSs in the list of conventional RSs are of the same type. In one example, a subset of the characteristics of the QCL destination are inferred, determined, or otherwise identified from characteristics of each RS in the list of conventional RSs. In another example, the partial QCL relationship is inferred, determined, or otherwise identified via a higher-layer parameter within a QCL information configuration. In another example, the QCL relationship applies to QCL Type C. In another example, the QCL relationship is not applicable to QCL Type D. In another example, the QCL source corresponds to a TRS, an NZP CSLRS resource, an SS or PBCH resource, or a combination thereof. In another example, the QCL destination corresponds to a NZP CSLRS resource configured with joint transmission, a DMRS corresponding to PDSCH transmission, or a combination thereof. In another example, the list of RSs are referred to by a resource pool.

[0129] It should be noted that a QCL destination including a joint RS that is QCLed with a QCL source including two conventional RSs does not imply that a first of the two conventional RSs and a second of the two conventional RSs are QCLed.

[0130] In one or more implementations, the enhanced TCI framework is applicable to FR1, with operating frequency up to 7 GHz.

[0131] In one or more scenarios, the implementations discussed above include configuring two pools of RS resources, where each CSLRS resource in a first pool of CSLRS resources is mappedto a distinct TRP, and each JRS resource in a pool of JRS resources is mapped to multiple TRPs. In one example, at least one of a TRS and an SS / PBCH resource is QCLed to a CSI-RS resource in the first pool of CSI-RS resources, e.g., via QCL Type A and QCL Type D, if applicable. In another example, a DMRS is QCLed with a JRS resource in the pool of JRS resources, e.g., via QCL Type A and QCL Type D, if applicable. In another example, a JRS resource in the pool of JRS resources is QCLed with two CSI-RS resources in the first pool of CSI-RS resources. In another example, a JRS resource corresponds to at least one port of a DMRS, and a CSI-RS resource in the first pool of CSI-RS resources corresponds to a TRP resource, e.g., a CSI-RS resource set configured with ‘trs- info.’ In another example, a JRS resource is an NZP CSI-RS resource, and the pool of JRS resources is a second pool of CSI-RS resources.

[0132] In a third phase of the CSI measurement and reporting framework (e.g., UE Rx DL beam refinement), the network (e.g., a NE such as a base station) configures a UE with CSI measurement corresponding to DL beam management parameters. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0133] The third phase of the CSI measurement and reporting framework corresponds to a third set of CSI reporting setting parameters. In one or more implementations, the third set of CSI reporting setting parameters corresponds to a third CSI reporting setting, where a first CSI reporting setting and a second CSI reporting setting correspond to the first phase and the second phase of the CSI measurement and reporting framework, respectively. Additionally or alternatively, the third set of CSI reporting setting parameters corresponds to a third CSI reporting sub-configuration of the CSI reporting setting, where a first and a second CSI reporting sub-configuration of the CSI reporting setting corresponds to the first phase and the second phase of the CSI measurement and reporting framework, respectively.

[0134] In one example, the third set of CSI reporting setting parameters is associated with a third CSI resource periodicity, where a value of the third CSI resource periodicity is shorter than a value of the first CSI resource periodicity and the second CSI resource periodicity associated with the first set and the second set of CSI reporting setting parameters, respectively. In another example, a reporting configuration type of the CSI reporting associated with the third set of CSI reporting setting parameters is the same as the reporting configuration type of the CSI reporting associatedwith at least one of the first set of CSI reporting setting parameters and the second set of CSI reporting setting parameters. In another example, a value of a report quantity associated with the second set of CSI reporting setting parameters is set to ‘none.’ In another example, a resource type of a third CSI resource setting associated with the third set of CSI reporting setting parameters is the same as the resource type of at least one of the first CSI resource setting and the second CSI resource setting associated with the first set and the second set of CSI reporting setting parameters, respectively.

[0135] The third phase of the CSI measurement and reporting framework, corresponding to P3, is based on the network transmitting a third set of beams, e.g., N beams, to the UE, where the N beams are based on at least one of the first set of beams and the second set of beams associated with the first CSI report and the second CSI report, respectively. The UE obtains an Rx beam based on P3. In one example, the N beams correspond to a subset of the K’ beams and the L’ beams in Pl and P2, respectively, and each beam in the N beams is QCLed with one of the subset of the K’ beams and the L’ beams in Pl and P2, respectively, with respect to QCL Type C, and, if applicable, QCL Type D. In another example, the N beams are configured with repetition, e.g., each beam is transmitted several times. In another example, the value of A is one, or more generally equal to the number of UE panels. In another example, each beam of the L beams is transmitted from one or more of the M ’ non-co-located TRPs. Each beam of the L beams may be transmitted from two or more non-co-located TRPs. In another example, the JRSs are CSI-RSs that are configured with a higher-layer parameter, e.g., a second type of CSI-RS.

[0136] Additionally or alternatively, P3 is based on the network transmitting a third set of beams, e.g., N beams, to the UE, where the N beams are based on at least one of the second set of beams and a sub-beam in the two or more sub-beams constituting the beams in the second set of beams. The UE obtains an Rx beam based on P3.

[0137] In a fourth phase of the CSI measurement and reporting framework (e.g., UE Tx UL beam selection), the network (e.g., a NE such as a base station) configures a UE with transmitting uplink beams corresponding to UL beam management parameters. Several implementations are described below. One or more elements or features from one or more of the described implementations may be combined.

[0138] The fourth phase of the CSI measurement and reporting framework corresponds to a set of UL RS setting parameters. In one implementation, the set of UL RS setting parameters corresponds to an SRS configuration. Additionally or alternatively, the set of UL RS setting parameter corresponds to a third CSI reporting sub-configuration of the CSI reporting setting, where a first and a second CSI reporting sub-configuration of the CSI reporting setting corresponds to the first phase and the second phase of the CSI measurement and reporting framework, respectively.

[0139] The fourth phase of the CSI measurement and reporting framework, corresponding to P4, is based on the UE transmitting a fourth set of beams, e.g., / beams, to the network corresponding to UL beams, where the / beams are based on the third set of beams. In one example, each beam of the / beams is QCLed with at least one of the N UE Rx beams in P3. In another example, each of the / beams is fully QCLed with at least one beam of the N UE Rx beams. In another example, each of the / beams is partially QCLed with at least one beam in the N UE Rx beams in P3. Note that a beam in the / beams may be wider or narrower, with respect to a 3 dB width of the beam, than the at least one beam in the N UE Rx beams in P3. In another example, the / beams correspond to / SRS resources.

[0140] It should be noted that UL beams in P4 may be narrower than the second set of beams, with respect to a 3 dB width of the beam, which corresponding to scenarios with low UE mobility and / or rotation variation, as well as scenarios where one dominant TRP exists, whose channel gain, RSRP or SINR is significantly larger than any of the remainder TRPs. Furthermore, the operating frequency range and the underlying antenna configuration at the TRP, the UE, or both, may be relevant to the width of the UL beam.

[0141] Additionally or alternatively, the UL beams in P4 may be wider than the second set of beams, with respect to a 3 dB width of the beam, corresponding to scenarios with high UE mobility and / or rotation variation, as well as scenarios where multiple dominant TRPs exist. Furthermore, the operating frequency range and the underlying antenna configuration at the TRP, the UE, or both, may be relevant to the width of the UL beam. One issue with wider UL beams is the larger potential interference caused on out-of-cell or non-selected TRPs, as well as power loss due to poor beamforming precision.

[0142] Following the transmission of the fourth set of beams, the network may transmit an indication of a selected UL beam from the fourth set of beams. In one example, the network transmits an UL RI indication, e.g., SRS resource indicator (SRI) indication of J’ of the / beams, where J’ is set to one or two. In general, J’ < J. In another example, the indication is transmitted within a resource indicator field in a DCI over a PDCCH. In another example, the indication is transmitted within a DL MAC-CE signal. In another example, the indicator is in a form of a beam indicator associated with at least one of the first phase and the second phase of the CSI measurement and reporting framework.

[0143] The techniques discussed herein describe a new beam management framework for next generation wireless networks with enhancements including, but not limited to, the following. An updated BM procedure that includes (1) a single-TRP DL beam selection, followed by (2) a joint DL beam transmitted from multiple TRPs, e.g., multi-TRP DL beam selection, then (3) a UE Rx beam refinement, and finally (4) an UL Tx beam selection refinement based on a subset of candidate DL Tx beams in prior phases of the updated BM procedure. A novel RS configuration that constitutes a set of joint DL beams, where each RS is transmitted from a plurality of non-co- located TRPs. An enhanced TCI framework that supports a QCL relationship between a QCL destination corresponding to an RS associated with a joint beam and a QCL source corresponding to a pool of resources, each resource corresponding to a distinct TRP, where the QCL relationship between the QCL destination resource and each RS resource in the QCL source is based on a partial QCL relationship.

[0144] Eigure 11 illustrates an example of a UE 1100 in accordance with aspects of the present disclosure. The UE 1100 may include a processor 1102, a memory 1104, a controller 1106, and a transceiver 1108. The processor 1102, the memory 1104, the controller 1106, or the transceiver 1108, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

[0145] The processor 1102, the memory 1104, the controller 1106, or the transceiver 1108, or various combinations or components thereof may be implemented in hardware (e.g., circuitry). The hardware may include a processor, a digital signal processor (DSP), an application-specificintegrated circuit (ASIC), or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

[0146] The processor 1102 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the processor 1102 may be configured to operate the memory 1104. In some other implementations, the memory 1104 may be integrated into the processor 1102. The processor 1102 may be configured to execute computer-readable instructions stored in the memory 1104 to cause the UE 1100 to perform various functions of the present disclosure.

[0147] The memory 1104 may include volatile or non-volatile memory. The memory 1104 may store computer-readable, computer-executable code including instructions when executed by the processor 1102 cause the UE 1100 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as the memory 1104 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

[0148] In some implementations, the processor 1102 and the memory 1104 coupled with the processor 1102 may be configured to cause the UE 1100 to perform one or more of the functions described herein (e.g., executing, by the processor 1102, instructions stored in the memory 1104). For example, the processor 1102 may support wireless communication at the UE 1100 in accordance with examples as disclosed herein. The UE 1100 may be configured to or operable to support a means for receiving a configuration message for a beam management procedure; receiving a plurality of joint beams during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; selecting a beam of the plurality of joint beams based at least in part on a measurement of a corresponding RS associated with the beam; and transmitting a report that indicates an index of the selected beam.

[0149] Additionally, the UE 1100 may be configured to or operable to support any one or combination of receiving a first set of beams during a first phase of the beam management procedure, where each beam of the first set of beams is received from a corresponding NE of the set of NE; and receiving the plurality of joint beams during a second phase of the beam management procedure; transmitting a first report based at least in part on the first phase of the beam management procedure; and transmitting a second report based at least in part on the second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; transmitting a RACH preamble based at least in part on the first phase of the beam management procedure; and transmitting the report based at least in part on the second phase of the beam management procedure; where an indication of a selected beam in the first set of beams is inferable from the RACH preamble; receiving a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where a first RS associated with the refined beam is QCLed with a second RS associated with at least one of a selected beam in the first set of beams, the selected beam in the plurality of joint beams, or a group of RS symbols in the multiple groups of RS symbols; transmitting one or more UL beams during a fourth phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase, or the third phase of the beam management procedure; where the RS comprises a CSI-RS, and the multiple groups of RS symbols comprises multiple groups of CSI-RS symbols; where each group of the multiple groups of CSI-RS symbols is received over a distinct set of time slots corresponding to one of a periodic or a semi-persistent CSI-RS configuration; where each group of the multiple groups of CSI-RS symbols is received over a distinct set of RBs of a BWP; where each group of the multiple groups of CSI-RS symbols is received over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each REof the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0150] Additionally, or alternatively, the UE 1100 may support at least one memory (e.g., the memory 1104) and at least one processor (e.g., the processor 1102) coupled with the at least one memory and configured to or operable to cause the UE to: receive a configuration message for a beam management procedure; receive a plurality of joint beams during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; select a beam of the plurality of joint beams based at least in part on a measurement of a corresponding RS associated with the beam; and transmit a report that indicates an index of the selected beam.

[0151] Additionally, the UE 1100 may be configured to or operable to support any one or combination of the at least one processor is further configured to or operable to cause the UE to: receive a first set of beams during a first phase of the beam management procedure, where each beam of the first set of beams is received from a corresponding NE of the set of NE; and receive the plurality of joint beams during a second phase of the beam management procedure; the at least one processor is further configured to or operable to cause the UE to: transmit a first report based at least in part on the first phase of the beam management procedure; and transmit a second report based at least in part on the second phase of the beam management procedure; the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; where the at least one processor is further configured to or operable to cause the UE to: transmit a RACH preamble based at least in part on the first phase of the beam management procedure; and transmit the report based at least in part on the second phase of the beam management procedure; where an indication of a selected beam in the first set of beams is inferable from the RACH preamble; where the at least one processor is further configured to or operable to cause the UE to receive a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based onat least one of the first phase and the second phase of the beam management procedure; where a first RS associated with the refined beam is QCLed with a second RS associated with at least one of a selected beam in the first set of beams, the selected beam in the plurality of joint beams, or a group of RS symbols in the multiple groups of RS symbols; where the at least one processor is further configured to or operable to cause the UE to transmit one or more UL beams during a fourth phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase, or the third phase of the beam management procedure; where the RS comprises a CSI-RS, and the multiple groups of RS symbols comprises multiple groups of CSI-RS symbols; where each group of the multiple groups of CSI-RS symbols is received over a distinct set of time slots corresponding to one of a periodic or a semi- persistent CSI-RS configuration; where each group of the multiple groups of CSI-RS symbols is received over a distinct set of RBs of a BWP; where each group of the multiple groups of CSI-RS symbols is received over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each RE of the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0152] In some implementations, the processor 1102 and the memory 1104 coupled with the processor 1102 may be configured to or operable to cause the UE 1100 to perform one or more of the functions described herein (e.g., executing, by the processor 1102, instructions stored in the memory 1104). For example, the processor 1102 may support wireless communication at the UE 1100 in accordance with examples as disclosed herein. The UE 1100 may be configured to or operable to support a means for receiving a configuration message for a beam management procedure; receiving a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receiving a second set of beams from a group of NEs, where the first set of beams is associated with a first set of RSs received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSsreceived over a pool of RS resources in the first set of RS resources; receiving an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receiving a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0153] Additionally, the UE 1100 may be configured to or operable to support any one or combination of where the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSI-RS resource set configured with a tracking parameter, or a first set of NZP CSI-RS resources; where the second set of RS resources corresponds to at least one of a second set of NZP CSI-RS resources, a set of RS resources configured with a joint transmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; transmitting a first report based on a first phase of the beam management procedure; and transmitting a second report based on a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an QCL in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the QCL in the second set of RSs is partially correlated with each QCL in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; receiving the first set of beams during a first phase of the beam management procedure; and receiving the second set of beams during a second phase of the beam management procedure; receiving a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; transmitting one or more ULbeams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS is selected by the group of NE via a resource indicator signaled to the UE; transmitting a report corresponding to each phase of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0154] Additionally, or alternatively, the UE 1100 may support at least one memory (e.g., the memory 1104) and at least one processor (e.g., the processor 1102) coupled with the at least one memory and configured to or operable to cause the UE to: receive a configuration message for a beam management procedure; receive a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receive a second set of beams from a group of NEs, where the first set of beams is associated with a first set of RSs received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receive an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receive a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0155] Additionally, the UE 1100 may be configured to or operable to support any one or combination of the at least one processor is configured to or operable to where the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSLRS resource set configured with a tracking parameter, or a first set of NZP CSLRS resources; where the second set of RS resources corresponds to at least one of a second setof NZP CSI-RS resources, a set of RS resources configured with a joint transmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; where the at least one processor is further configured to or operable to cause the UE to: transmit a first report based on a first phase of the beam management procedure; and transmit a second report based on a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; where the at least one processor is further configured to or operable to cause the UE to: receive the first set of beams during a first phase of the beam management procedure; and receive the second set of beams during a second phase of the beam management procedure; where the at least one processor is further configured to or operable to cause the UE to receive a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; where the at least one processor is further configured to or operable to cause the UE to transmit one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam isbased on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS is selected by the group of NE via a resource indicator signaled to the UE; where the at least one processor is further configured to or operable to cause the UE to transmit a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0156] The controller 1106 may manage input and output signals for the UE 1100. The controller 1106 may also manage peripherals not integrated into the UE 1100. In some implementations, the controller 1106 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the controller 1106 may be implemented as part of the processor 1102.

[0157] In some implementations, the UE 1100 may include at least one transceiver 1108. In some other implementations, the UE 1100 may have more than one transceiver 1108. The transceiver 1108 may represent a wireless transceiver. The transceiver 1108 may include one or more receiver chains 1110, one or more transmitter chains 1112, or a combination thereof.

[0158] A receiver chain 1110 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 1110 may include one or more antennas to receive a signal over the air or wireless medium. The receiver chain 1110 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain 1110 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 1110 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0159] A transmitter chain 1112 may be configured to generate and transmit signals (e.g., control information, data, packets). The transmitter chain 1112 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM). The transmitter chain 1112 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 1112 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

[0160] Figure 12 illustrates an example of a processor 1200 in accordance with aspects of the present disclosure. The processor 1200 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 1200 may include a controller 1202 configured to perform various operations in accordance with examples as described herein. The processor 1200 may optionally include at least one memory 1204, which may be, for example, an L1 / L2 / L3 cache. Additionally, or alternatively, the processor 1200 may optionally include one or more arithmetic-logic units (ALUs) 1206. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses).

[0161] The processor 1200 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1200) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase change memory (PCM), and others).

[0162] The controller 1202 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1200 to cause the processor 1200 to support various operations in accordance with examples as described herein. For example, the controller 1202 may operate as a control unit of the processor 1200, generating control signals that manage the operation of various components of the processor 1200. These control signalsinclude enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.

[0163] The controller 1202 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1204 and determine subsequent instruction(s) to be executed to cause the processor 1200 to support various operations in accordance with examples as described herein. The controller 1202 may be configured to track memory addresses of instructions associated with the memory 1204. The controller 1202 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 1202 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1200 to cause the processor 1200 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 1202 may be configured to manage flow of data within the processor 1200. The controller 1202 may be configured to control transfer of data between registers, ALUs 1206, and other functional units of the processor 1200.

[0164] The memory 1204 may include one or more caches (e.g., memory local to or included in the processor 1200 or other memory, such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 1204 may reside within or on a processor chipset (e.g., local to the processor 1200). In some other implementations, the memory 1204 may reside external to the processor chipset (e.g., remote to the processor 1200).

[0165] The memory 1204 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1200, cause the processor 1200 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 1202 and / or the processor 1200 may be configured to execute computer-readable instructions stored in the memory 1204 to cause the processor 1200 to perform various functions. For example, the processor 1200 and / or the controller 1202 may be coupled with or to the memory 1204, the processor 1200, and the controller 1202, and may be configured to perform various functions described herein. In some examples, the processor 1200 may include multiple processors and the memory 1204 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiplememories, which may, individually or collectively, be configured to perform various functions herein.

[0166] The one or more ALUs 1206 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 1206 may reside within or on a processor chipset (e.g., the processor 1200). In some other implementations, the one or more ALUs 1206 may reside external to the processor chipset (e.g., the processor 1200). One or more ALUs 1206 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 1206 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 1206 may be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1206 may support logical operations such as AND, OR, exclusive-OR (XOR), not-OR (NOR), and not-AND (NAND), enabling the one or more ALUs 1206 to handle conditional operations, comparisons, and bitwise operations.

[0167] The processor 1200 may support wireless communication in accordance with examples as disclosed herein. The processor 1200 may be configured to or operable to support at least one controller (e.g., the controller 1202) coupled with at least one memory (e.g., the memory 1204) and configured to cause the processor to: receive a configuration message for a beam management procedure; receive a plurality of joint beams during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; select a beam of the plurality of joint beams based at least in part on a measurement of a corresponding RS associated with the beam; and transmit a report that indicates an index of the selected beam.

[0168] Additionally, the processor 1200 may be configured to or operable to support any one or combination of the at least one controller is further configured to or operable to cause the processor to: receive a first set of beams during a first phase of the beam management procedure, where each beam of the first set of beams is received from a corresponding NE of the set of NE; and receive the plurality of joint beams during a second phase of the beam management procedure; the at least one controller is further configured to or operable to cause the processor to: transmit a first report basedat least in part on the first phase of the beam management procedure; and transmit a second report based at least in part on the second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; where the at least one controller is further configured to or operable to cause the processor to: transmit a RACH preamble based at least in part on the first phase of the beam management procedure; and transmit the report based at least in part on the second phase of the beam management procedure; where an indication of a selected beam in the first set of beams is inferable from the RACH preamble; where the at least one controller is further configured to or operable to cause the processor to receive a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where a first RS associated with the refined beam is QCLed with a second RS associated with at least one of a selected beam in the first set of beams, the selected beam in the plurality of joint beams, or a group of RS symbols in the multiple groups of RS symbols; where the at least one controller is further configured to or operable to cause the processor to transmit one or more UL beams during a fourth phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase, or the third phase of the beam management procedure; where the RS comprises a CSLRS, and the multiple groups of RS symbols comprises multiple groups of CSLRS symbols; where each group of the multiple groups of CSLRS symbols is received over a distinct set of time slots corresponding to one of a periodic or a semi-persistent CSLRS configuration; where each group of the multiple groups of CSLRS symbols is received over a distinct set of RBs of a BWP; where each group of the multiple groups of CSLRS symbols is received over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each RE of the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0169] The processor 1200 may support wireless communication in accordance with examples as disclosed herein. The processor 1200 may be configured to or operable to support at least one controller (e.g., the controller 1202) coupled with at least one memory (e.g., the memory 1204) and configured to cause the processor to: transmit a configuration message for a beam management procedure that includes transmission of a plurality of joint beams to a UE during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; and receive a report that indicates an index of a beam of the plurality of joint beams selected by the UE based at least in part on a channel measurement corresponding to the RS associated with the beam.

[0170] Additionally, the processor 1200 may be configured to or operable to support any one or combination of where the beam management procedure includes: a first phase in which each beam of a first set of beams is transmitted from a corresponding NE of the set of NE; and a second phase in which the plurality of joint beams are transmitted to the UE; where the at least one controller is further configured to or operable to cause the processor to: receive a first report based at least in part on a first phase of the beam management procedure; and receive a second report based at least in part on the second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; where the at least one controller is further configured to or operable to cause the processor to receive: a RACH preamble based at least in part on a first phase of the beam management procedure; and receive the report based at least in part on the second phase of the beam management procedure; where the at least one controller is further configured to or operable to cause the processor to infer an indication of a selected beam in the first set of beams from the RACH preamble; where the at least one controller is further configured to or operable to cause the processor to receive one or more UL beams during a phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the RS comprises a CSI-RS, and themultiple groups of RS symbols comprises multiple groups of CSI-RS symbols; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of time slots corresponding to one of a periodic or a semi -persistent CSI-RS configuration; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of RBs of a BWP; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each RE of the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0171] The processor 1200 may support wireless communication in accordance with examples as disclosed herein. The processor 1200 may be configured to or operable to support at least one controller (e.g., the controller 1202) coupled with at least one memory (e.g., the memory 1204) and configured to or operable to cause the processor to: receive a configuration message for a beam management procedure; receive a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs; receive a second set of beams from a group of NEs, where the first set of beams is associated with a first set of RSs received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receive an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receive a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0172] Additionally, the processor 1200 may be configured to or operable to support any one or combination of the at least one controller is configured to or operable to cause the processor to where the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSI-RS resource set configured with a tracking parameter, or a first set of NZP CSI-RS resources; where the second set of RS resources corresponds to at least one of a second set of NZP CSI-RS resources, a set of RS resources configured with a jointtransmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; where the at least one controller is further configured to or operable to cause the processor to: transmit a first report based on a first phase of the beam management procedure; and transmit a second report based on at a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; where the at least one controller is further configured to or operable to cause the processor to: receive the first set of beams during a first phase of the beam management procedure; and receive the second set of beams during a second phase of the beam management procedure; where the at least one controller is further configured to or operable to cause the processor to receive a repetition of a refined beam during a third phase of the beam management procedure, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; where the at least one controller is further configured to or operable to cause the processor to transmit one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the ULRS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS is selected by the group of NE via a resource indicator signaled to the processor; where the at least one controller is further configured to or operable to cause the processor to transmit a report corresponding to each phase of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0173] The processor 1200 may support wireless communication in accordance with examples as disclosed herein. The processor 1200 may be configured to or operable to support at least one controller (e.g., the controller 1202) coupled with at least one memory (e.g., the memory 1204) and configured to or operable to cause the processor to: transmit a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmit an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmit a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0174] Additionally, the processor 1200 may be configured to or operable to support any one or combination of the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSI-RS resource set configured with a tracking parameter, or a first set of NZP CSI-RS resources; where the second set of RS resources corresponds to at least one of a second set of NZP CSI-RS resources, a set of RS resources configured with a joint transmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; where the at least one controller is further operable to cause the processor to: receive a first report based on a first phase of the beam management procedure; and receive a second report based on a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes anindication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; where the first set of beams is transmitted during a first phase of the beam management procedure, and the second set of beams is transmitted during a second phase of the beam management procedure; where the at least one controller is further operable to cause the processor to cause, in a third phase, transmission of a repetition of a refined beam, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; where the at least one controller is further operable to cause the processor to receive one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS is selected by a group of NE via a resource indicator signaled to a UE; where the at least one controller is further operable to cause the processor to transmit a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0175] Figure 13 illustrates an example of a NE 1300 in accordance with aspects of the present disclosure. The NE 1300 may include a processor 1302, a memory 1304, a controller 1306, and a transceiver 1308. The processor 1302, the memory 1304, the controller 1306, or the transceiver 1308, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

[0176] The processor 1302, the memory 1304, the controller 1306, or the transceiver 1308, or various combinations or components thereof may be implemented in hardware (e.g., circuitry). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

[0177] The processor 1302 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the processor 1302 may be configured to operate the memory 1304. In some other implementations, the memory 1304 may be integrated into the processor 1302. The processor 1302 may be configured to execute computer-readable instructions stored in the memory 1304 to cause the NE 1300 to perform various functions of the present disclosure.

[0178] The memory 1304 may include volatile or non-volatile memory. The memory 1304 may store computer-readable, computer-executable code including instructions when executed by the processor 1302 cause the NE 1300 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as the memory 1304 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

[0179] In some implementations, the processor 1302 and the memory 1304 coupled with the processor 1302 may be configured to or operable to cause the NE 1300 to perform one or more ofthe functions described herein (e.g., executing, by the processor 1302, instructions stored in the memory 1304). For example, the processor 1302 may support wireless communication at the NE 1300 in accordance with examples as disclosed herein. The NE 1300 may be configured to or operable to support a means for transmitting a configuration message for a beam management procedure that includes transmission of a plurality of joint beams to a UE during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; and receiving a report that indicates an index of a beam of the plurality of joint beams selected by the UE based at least in part on a channel measurement corresponding to the RS associated with the beam.

[0180] Additionally, the NE 1300 may be configured to or operable to support any one or combination of where the beam management procedure includes: a first phase in which each beam of a first set of beams is transmitted from a corresponding NE of the set of NE; and a second phase in which the plurality of joint beams are transmitted to the UE; receiving a first report based at least in part on a first phase of the beam management procedure; and receiving a second BM report based at least in part on a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; receiving a RACH preamble based at least in part on a first phase of the beam management procedure, and receiving the report based at least in part on the second phase of the beam management procedure; inferring an indication of a selected beam in the first set of beams from the RACH preamble; receiving one or more UL beams during a phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the RS comprises a CSI-RS, and the multiple groups of RS symbols comprises multiple groups of CSI-RS symbols; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of time slots corresponding to one of a periodic or a semi-persistent CSI-RSconfiguration; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of RBs corresponding to of a BWP; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each RE of the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0181] Additionally, or alternatively, the NE 1300 may support at least one memory (e.g., the memory 1304) and at least one processor (e.g., the processor 1302) coupled with the at least one memory and configured to or operable to cause the NE to: transmit a configuration message for a beam management procedure that includes transmission of a plurality of joint beams to a UE during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE; and receive a report that indicates an index of a beam of the plurality of joint beams selected by the UE based at least in part on a channel measurement corresponding to the RS associated with the beam.

[0182] Additionally, the NE 1300 may be configured to or operable to support any one or combination of where the beam management procedure includes: a first phase in which each beam of a first set of beams is transmitted from a corresponding NE of the set of NE; and a second phase in which the plurality of joint beams are transmitted to the UE; where the at least one processor is further configured to or operable to cause the base station to: receive a first report based at least in part on a first phase of the beam management procedure; and receive a second report based at least in part on the second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of the selected beam in the plurality of joint beams; where the indication of the selected beam in the second report comprises a ‘null’ value, where the ‘null’ value indicates that the selected beam in the first set of beams has a higher priority than the selected beam in the second report; where at least one of the first report and the second report is a CSI report; where the at least one processor is further configured to or operable to cause the base station to receive: a RACH preamble based atleast in part on a first phase of the beam management procedure; and receive the report based at least in part on the second phase of the beam management procedure; where the at least one processor is further configured to or operable to cause the base station to infer an indication of a selected beam in the first set of beams from the RACH preamble; where the at least one processor is further configured to or operable to cause the base station to receive one or more UL beams during a phase of the beam management procedure and over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the RS comprises a CSI- RS, and the multiple groups of RS symbols comprises multiple groups of CSI-RS symbols; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of time slots corresponding to one of a periodic or a semi-persistent CSI-RS configuration; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct set of RBs of a BWP; where each group of the multiple groups of CSI-RS symbols is transmitted over a distinct CDM group; where the RS spans at least one of a plurality of symbols over one or more time slots or a plurality of REs over one or more RBs; where each symbol of the plurality of symbols is associated with a distinct NE in the set of NE; where each RE of the plurality of REs is associated with a distinct NE in the set of NE; where each group of RS symbols in the multiple groups of RS symbols corresponds to a distinct RS resource.

[0183] In some implementations, the processor 1302 and the memory 1304 coupled with the processor 1302 may be configured to or operable to cause the NE 1300 to perform one or more of the functions described herein (e.g., executing, by the processor 1302, instructions stored in the memory 1304). For example, the processor 1302 may support wireless communication at the NE 1300 in accordance with examples as disclosed herein. The NE 1300 may be configured to or operable to support a means for transmitting a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmitting an indication of a QCL relationship betweenRSs in the first set of RSs and RSs in the second set of RSs; and transmitting a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0184] Additionally, the NE 1300 may be configured to or operable to support any one or combination of where the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSLRS resource set configured with a tracking parameter, or a first set of NZP CSLRS resources; where the second set of RS resources corresponds to at least one of a second set of NZP CSLRS resources, a set of RS resources configured with a joint transmission parameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; receiving a first report based on a first phase of the beam management procedure; and receiving a second report based on at least a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; where the first set of beams is transmitted during a first phase of the beam management procedure, and the second set of beams is transmitted during a second phase of the beam management procedure; transmitting a repetition of a refined beam, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; receiving one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, ordistinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS is selected by a group of NE via a resource indicator signaled to a UE; transmitting a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0185] Additionally, or alternatively, the NE 1300 may support at least one memory (e.g., the memory 1304) and at least one processor (e.g., the processor 1302) coupled with the at least one memory and configured to or operable to cause the NE to: transmit a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmit an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmit a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

[0186] Additionally, the NE 1300 may be configured to or operable to support any one or combination of the at least one processor is configured to or operable to cause the NE to where the first set of RS resources corresponds to at least one of a set of SS or PBCH resources, a set of TRSs, a TRS corresponding to a CSLRS resource set configured with a tracking parameter, or a first set of NZP CSLRS resources; where the second set of RS resources corresponds to at least one of a second set of NZP CSLRS resources, a set of RS resources configured with a joint transmissionparameter, or a set of DMRSs for one of a PDSCH signaling or a PDCCH signaling; where the at least one processor is further configured to or operable to cause the base station to: receive a first report based on a first phase of the beam management procedure; and receive a second report based on a second phase of the beam management procedure; where the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams; where at least one of the first report and the second report corresponds to a CSI report; where the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter; where the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 GHz; where an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties; where the first set of beams is transmitted during a first phase of the beam management procedure, and the second set of beams is transmitted during a second phase of the beam management procedure; where the at least one processor is further configured to or operable to cause the base station to cause, in a third phase, transmission of a repetition of a refined beam, where the refined beam is based on at least one of the first phase and the second phase of the beam management procedure; where the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams; where an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set of RSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs; where the at least one processor is further configured to or operable to cause the base station to receive one or more UL beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs; where the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure; where an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam; where a QCL relationship between the UL RS associated with the UL beam and the RS corresponding to the refined beam is based on a partial QCL relationship, and where the UL RS is partially correlated with the RS corresponding to the refined beam; where the UL RS comprises a SRS, and the SRS isselected by a group of NE via a resource indicator signaled to a UE; where the at least one processor is further configured to or operable to cause the base station to transmit a report corresponding to each phase of two or more phases of the beam management procedure, where each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a SINR of the corresponding RS.

[0187] The controller 1306 may manage input and output signals for the NE 1300. The controller 1306 may also manage peripherals not integrated into the NE 1300. In some implementations, the controller 1306 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the controller 1306 may be implemented as part of the processor 1302.

[0188] In some implementations, the NE 1300 may include at least one transceiver 1308. In some other implementations, the NE 1300 may have more than one transceiver 1308. The transceiver 1308 may represent a wireless transceiver. The transceiver 1308 may include one or more receiver chains 1310, one or more transmitter chains 1312, or a combination thereof.

[0189] A receiver chain 1310 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 1310 may include one or more antennas to receive a signal over the air or wireless medium. The receiver chain 1310 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain 1310 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 1310 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0190] A transmitter chain 1312 may be configured to generate and transmit signals (e.g., control information, data, packets). The transmitter chain 1312 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phaseshift keying (PSK) or quadrature amplitude modulation (QAM). The transmitter chain 1312 may also include at least one power amplifier configured to amplify the modulated signal to anappropriate power level suitable for transmission over the wireless medium. The transmitter chain 1312 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

[0191] Figure 14 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, the UE may execute a set of instructions to control the function elements of the UE to perform the described functions.

[0192] At 1402, the method may include receiving a configuration message for a beam management procedure. The operations of 1402 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1402 may be performed by a UE as described with reference to Figure 11.

[0193] At 1404, the method may include receiving a plurality of joint beams during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE. The operations of 1404 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1404 may be performed by a UE as described with reference to Figure 11.

[0194] At 1406, the method may include selecting a beam of the plurality of joint beams based at least in part on a measurement of a corresponding RS associated with the beam. The operations of 1406 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1406 may be performed a UE as described with reference to Figure 11.

[0195] At 1408, the method may include transmitting a report that indicates an index of the selected beam. The operations of 1408 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1408 may be performed a UE as described with reference to Figure 11.

[0196] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0197] Figure 15 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a NE as described herein. In some implementations, the NE may execute a set of instructions to control the function elements of the NE to perform the described functions.

[0198] At 1502, the method may include transmitting a configuration message for a beam management procedure that includes transmission of a plurality of joint beams to a UE during the beam management procedure from a set of NE, where each joint beam of the plurality of joint beams is associated with a RS, where the RS is associated with multiple groups of RS symbols and each group of the multiple groups of RS symbols is associated with a different NE of the set of NE. The operations of 1502 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1502 may be performed by a NE as described with reference to Figure 13.

[0199] At 1504, the method may include receiving a report that indicates an index of a beam of the plurality of joint beams selected by the UE based at least in part on a channel measurement corresponding to the RS associated with the beam. The operations of 1504 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1504 may be performed by a NE as described with reference to Figure 13.

[0200] Figure 16 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, the UE may execute a set of instructions to control the function elements of the UE to perform the described functions.

[0201] At 1602, the method may include receiving a configuration message for a beam management procedure. The operations of 1602 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1602 may be performed by a UE as described with reference to Figure 11.

[0202] At 1604, the method may include receiving a first set of beams during the beam management procedure, where each beam of the first set of beams is received from a NE of a set of NEs. The operations of 1604 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1604 may be performed by a UE as described with reference to Figure 11.

[0203] At 1606, the method may include receiving a second set of beams from a group of NEs, where the first set of beams is associated with a first set of RSs received over a first set of RS resources, where the second set of beams is associated with a second set of RSs received over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources. The operations of 1606 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1606 may be performed a UE as described with reference to Figure 11.

[0204] At 1608, the method may include receiving an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs. The operations of 1608 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1608 may be performed by a UE as described with reference to Figure 11.

[0205] At 1610, the method may include receiving a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs. The operations of 1610 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1610 may be performed by a UE as described with reference to Figure 11.

[0206] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0207] Figure 17 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a NE as described herein. In some implementations, the NE may execute a set of instructions to control the function elements of the NE to perform the described functions.

[0208] At 1702, the method may include transmitting a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, where the first set of beams is associated with a first set of RSs transmitted over a first set of RS resources, where the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and where an RS in the second set of RSs received over an RS resource in the second set of RS resources is QCLed with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources. The operations of 1702 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1702 may be performed by a NE as described with reference to Figure 13.

[0209] At 1704, the method may include transmitting an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs. The operations of 1704 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1704 may be performed by a NE as described with reference to Figure 13.

[0210] At 1706, the method may include transmitting a DL signal over a physical channel, where the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs. The operations of 1706 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1706 may be performed a NE as described with reference to Figure 13.

[0211] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0212] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

CLAIMSWhat is claimed is:

1. A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and operable to cause the UE to: receive a configuration message for a beam management procedure; receive a first set of beams during the beam management procedure, wherein each beam of the first set of beams is received from a network equipment (NE) of a set of NEs; receive a second set of beams from a group of NEs, wherein the first set of beams is associated with a first set of reference signals (RSs) received over a first set of RS resources, wherein the second set of beams is associated with a second set of RSs received over a second set of RS resources, and wherein an RS in the second set of RSs received over an RS resource in the second set of RS resources is Quasi-co-located (QCLed) with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receive an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receive a downlink (DL) signal over a physical channel, wherein the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

2. The UE of claim 1 , wherein the first set of RS resources corresponds to at least one of a set of synchronization signal (SS) or physical broadcast channel (PBCH) resources, a set of tracking reference signals (TRSs), a TRS corresponding to a channel state information (CSI)-RS resource set configured with a tracking parameter, or a first set of non-zero power (NZP) CSLRS resources.

3. The UE of claim 1, wherein the second set of RS resources corresponds to at least one of a second set of non-zero power (NZP) CSLRS resources, a set of RS resources configured with a joint transmission parameter, or a set of demodulation RSs (DMRSs) for one of a physical downlink shared channel (PDSCH) signaling or a physical downlink control channel (PDCCH) signaling.

4. The UE of claim 1, wherein the at least one processor is further operable to cause the UE to: transmit a first report based on a first phase of the beam management procedure; andtransmit a second report based on a second phase of the beam management procedure.

5. The UE of claim 4, wherein the first report includes an indication of a selected beam in the first set of beams, and the second report includes an indication of a selected beam in the second set of beams.

6. The UE of claim 4, wherein at least one of the first report and the second report corresponds to a channel state information (CSI) report.

7. The UE of claim 1, wherein the QCL relationship is with respect to at least one of a set of QCL properties including an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial parameter.

8. The UE of claim 7, wherein the spatial parameter QCL property is applicable to a first frequency range corresponding to carrier frequencies no larger than 7 gigahertz (GHz).

9. The UE of claim 7, wherein an RS in the second set of RSs is partially QCLed with the pool of RSs in the first set of RSs, indicating that the RS in the second set of RSs is partially correlated with each RS in the pool of RSs in the first set of RSs, with respect to at least one QCL property in the set of QCL properties.

10. The UE of claim 1, wherein the at least one processor is further operable to cause the UE to: receive the first set of beams during a first phase of the beam management procedure; and receive the second set of beams during a second phase of the beam management procedure.

11. The UE of claim 10, wherein the at least one processor is further operable to cause the UE to receive a repetition of a refined beam during a third phase of the beam management procedure, wherein the refined beam is based on at least one of the first phase and the second phase of the beam management procedure.

12. The UE of claim 11, wherein the refined beam is associated with one of a first selected beam in the first set of beams, and a second selected beam in the second set of beams.

13. The UE of claim 12, wherein an RS corresponding to the refined beam is QCLed with one of the RSs in the first set of RSs associated with the first selected beam, an RS in the second set ofRSs associated with the second selected beam, or a subset of RS symbols of the RS in the second set of RSs.

14. The UE of claim 13, wherein the at least one processor is further operable to cause the UE to transmit one or more uplink (UL) beams during a fourth phase of the beam management procedure over at least one of distinct time resources, distinct frequency resources, or distinct time and frequency resource pairs.

15. The UE of claim 14, wherein the one or more UL beams are based on at least one of the first phase, the second phase and third phase of the beam management procedure.

16. The UE of claim 14, wherein an UL RS associated with an UL beam in the one or more UL beams is QCLed with the RS corresponding to the refined beam.

17. The UE of claim 1, wherein the at least one processor is further operable to cause the UE to transmit a report corresponding to each phase of two or more phases of the beam management procedure, wherein each report includes at least one of a resource indicator associated with a selected beam, a received power of a corresponding RS, or a signal to interference-and-noise ratio (SINR) of the corresponding RS.

18. A base station for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and operable to cause the base station to: transmit a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, wherein the first set of beams is associated with a first set of reference signals (RSs) transmitted over a first set of RS resources, wherein the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and wherein an RS in the second set of RSs received over an RS resource in the second set of RS resources is Quasi-co-located (QCLed) with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources;transmit an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and transmit a downlink (DL) signal over a physical channel, wherein the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

19. A method performed by a user equipment (UE), the method comprising: receiving a configuration message for a beam management procedure; receiving a first set of beams during the beam management procedure, wherein each beam of the first set of beams is received from a network equipment (NE) of a set of NEs; receiving a second set of beams from a group of NEs, wherein the first set of beams is associated with a first set of reference signals (RSs) received over a first set of RS resources, wherein the second set of beams is associated with a second set of RSs received over a second set of RS resources, and wherein an RS in the second set of RSs received over an RS resource in the second set of RS resources is Quasi-co-located (QCLed) with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; receiving an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; and receiving a downlink (DL) signal over a physical channel, wherein the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

20. A method performed by a base station, the method comprising: transmitting a configuration message for a beam management procedure that includes transmission of a first set of beams during the beam management procedure and transmission of a second set of beams during the beam management procedure, wherein the first set of beams is associated with a first set of reference signals (RSs) transmitted over a first set of RS resources, wherein the second set of beams is associated with a second set of RSs transmitted over a second set of RS resources, and wherein an RS in the second set of RSs received over an RS resource in the second set of RS resources is Quasi-co-located (QCLed) with a pool of RSs in the first set of RSs received over a pool of RS resources in the first set of RS resources; transmitting an indication of a QCL relationship between RSs in the first set of RSs and RSs in the second set of RSs; andtransmitting a downlink (DL) signal over a physical channel, wherein the DL signal is QCLed with at least one of the RSs in the first set of RSs and RSs in the second set of RSs.

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