EP4666488A1

EP4666488A1 - Signaling design for td beam prediction with flexible measurement and prediction cycles

Info

Publication number: EP4666488A1
Application number: EP23712764.2A
Authority: EP
Inventors: Qiaoyu Li; Hamed Pezeshki; Mahmoud Taherzadeh Boroujeni
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2025-12-24
Also published as: CN120731570A; WO2024168797A1

Abstract

Aspects of the present disclosure relate to signaling enhancements to CSI report settings to support multi-shot (flexible) measurement cycles for measuring one set of beams and multi-shot (flexible) prediction cycles for predicting and reporting a different set of beams. A base station configures and transmits periodicity and offset information including multiple periodicities for a CMR set including CMRs associated with a single CSI report setting, periodicity and offset information including multiple periodicities for prediction or reporting of channel characteristics associated with a CPR set including CPRs associated with the same CSI report setting, or periodicity and offset information for both CMR and CPR sets. Using this periodicity and offset information, the UE may perform beam measurements of CMRs or beam predictions and reporting of CPRs under a same, single CSI report setting, thereby allowing the UE to efficiently achieve the performance gains associated with AI/ML-based beam management.

Description

SIGNALING DESIGN FOR TD BEAM PREDICTION WITH FLEXIBLE MEASUREMENT AND PREDICTION CYCLES

TECHNICAL FIELD

The present disclosure generally relates to communication systems, and more particularly, to wireless communication systems including signaling enhancements to CSI report settings to support flexible measurement cycles for measuring one set of transmission beams and flexible prediction cycles for predicting and reporting a different set of transmission beams.
DESCRIPTION OF THE RELATED TECHNOLOGY
Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
SUMMARY
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The apparatus includes a processor, memory coupled with the processor, and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: receive periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and transmit a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a network entity such as a base station. The apparatus includes a processor, memory coupled with the processor, and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: transmit periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and receive a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a diagram illustrating an example of a wireless communications system and an access network.
FIG. 1B shows a diagram illustrating an example disaggregated base station architecture.
FIG. 2A is a diagram illustrating an example of a first subframe within a 5G NR frame structure.
FIG. 2B is a diagram illustrating an example of DL channels within a 5G NR subframe.
FIG. 2C is a diagram illustrating an example of a second subframe within a 5G NR frame structure.
FIG. 2D is a diagram illustrating an example of UL channels within a 5G NR subframe.
FIG. 3 is a block diagram of a base station in communication with a UE in an access network.
FIG. 4 is a diagram illustrating an example of beam management operations associated with 5G NR networks.
FIG. 5 is a diagram illustrating an example of UE-based beam prediction in the temporal domain, including flexible measurement cycles for Set B beams and prediction cycles for Set A beams.
FIG. 6 is a diagram illustrating an example of a CSI report setting associated with periodicity and offset information indicating the timing of multi-shot or flexible measurement cycles and prediction cycles.
FIG. 7 is a diagram illustrating an example of periodicity and offset information indicating the timing of a periodicity for multi-shot or flexible prediction cycles.
FIG. 8 is a diagram illustrating an example of a call flow between a UE and a base station.
FIG. 9 is a diagram illustrating an example of a channel measurement resource (CMR) set associated with multi-shot or flexible measurement cycles.
FIG. 10 is a flowchart of a method of wireless communication at a UE.
FIG. 11 is a flowchart of a method of wireless communication at a network entity such as a base station.
FIG. 12 is a diagram illustrating an example of a hardware implementation for an apparatus.
FIG. 13 is a diagram illustrating an example of a hardware implementation for an apparatus.

DETAILED DESCRIPTION

The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
Aspects of the present disclosure relate to signaling enhancements to CSI report settings to support multi-shot (flexible) measurement cycles for measuring one set of beams and multi-shot (flexible) prediction cycles for predicting and reporting a different set of beams during artificial intelligence (AI) or machine learning (ML) -based beam management. Current CSI report setting frameworks allow for configuration of only a single measurement periodicity and a single reporting periodicity for periodic or semi-persistently scheduled CSI reports. As a result, a base station may not be able to successfully indicate to the UE, via a single CSI report setting and its associated configurations, the periodic behaviors of multi-shot or flexible prediction cycles carrying channel prediction resources (CPRs) used for prediction and/or reporting of channel characteristics, as well as the periodic behaviors of multi-shot or flexible measurement cycles carrying channel measurement resources (CMRs) . To enhance the CSI report setting framework to provide signaling support for such beam prediction timeline behaviors with flexible numbers and locations of measurement and prediction cycles, aspects of the present disclosure allow the base station to configure periodicity and offset information including multiple periodicities for a CMR set including CMRs associated with a single CSI report setting, as well as periodicity and offset information including multiple periodicities for prediction or reporting of channel characteristics associated with a CPR set including CPRs associated with the same CSI report setting. Using this periodicity and offset information, the base station may efficiently indicate when the UE may perform beam measurements of CMRs and beam predictions and reporting of CPRs under a same, single CSI report setting, thereby allowing the UE to efficiently achieve the performance gains associated with AI/ML-based beam management.
In one aspect, the periodicity and offset information may include multiple periodicities associated with CMRs, including a first measurement periodicity P_1, CMR indicating the timing of consecutive CMR set bursts with respect to one another, a quantity N_CMR of consecutive CMR set bursts separated in time by P_1, CMR, and a second measurement periodicity P_2, CMR indicating the time domain periodicity for such N_CMR CMR set bursts. This information may allow the base station to efficiently configure and the UE to consequently determine the timing of multi-shot or flexible measurement cycles including CMRs. Alternatively or additionally, the periodicity and offset information may include multiple periodicities associated with CPRs, including a first periodicity P_1, CPR indicating the timing of bursts of consecutive prediction and/or reporting occasions with respect to one another, a quantity N_CPR of bursts of consecutive prediction and/or reporting occasions separated in time by P_1, CPR, and a second periodicity P_2, CPR indicating the time domain periodicity for such N_CPR bursts of prediction and/or reporting occasions. This information may allow the base station to efficiently configure and the UE to consequently determine the timing of multi-shot or flexible prediction and reporting cycles including CPRs. In one aspect, the CMR set bursts in the measurement cycles associated with a CSI report setting may include a same pattern of transmission beams to provide simplicity in CMR set configuration across multiple measurement cycles. In another aspect, the CMR set bursts in the measurement cycles associated with a CSI report setting may include different patterns of transmission beams, thereby accounting for moving obstacles or other time-varying factors that may result in beam blockages during respective measurement cycles. In various aspects, the periodicity and offset information may be indicated in either an RRC configuration, MAC-CE, an associated report configuration information setting for an aperiodic CSI report, downlink control information, or a combination of the foregoing.
Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements” ) . These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
Accordingly, in one or more example embodiments, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
FIG. 1A is a diagram illustrating an example of a wireless communications system and an access network 100. The wireless communications system (also referred to as a wireless wide area network (WWAN) ) includes base stations 102, user equipment (s) (UE) 104, an Evolved Packet Core (EPC) 160, and another core network 190 (e.g., a 5G Core (5GC) ) . The base stations 102 may include macrocells (high power cellular base station) and/or small cells (low power cellular base station) . The macrocells include base stations. The small cells include femtocells, picocells, and microcells.
The base stations 102 configured for 4G Long Term Evolution (LTE) (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN) ) may interface with the EPC 160 through first backhaul links 132 (e.g., S1 interface) . The base stations 102 configured for 5G New Radio (NR) (collectively referred to as Next Generation RAN (NG-RAN) ) may interface with core network 190 through second backhaul links 184. In addition to other functions, the base stations 102 may perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity) , inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, Multimedia Broadcast Multicast Service (MBMS) , subscriber and equipment trace, RAN information management (RIM) , paging, positioning, and delivery of warning messages. The base stations 102 may communicate directly or indirectly (e.g., through the EPC 160 or core network 190) with each other over third backhaul links 134 (e.g., X2 interface) . The first backhaul links 132, the second backhaul links 184, and the third backhaul links 134 may be wired or wireless.
The base stations 102 may wirelessly communicate with the UEs 104. Each of the base stations 102 may provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, the small cell 102' may have a coverage area 110' that overlaps the coverage area 110 of one or more macro base stations 102. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links 120 between the base stations 102 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and/or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104. The communication links 120 may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity. The communication links may be through one or more carriers. The base stations 102 /UEs 104 may use spectrum up to Y megahertz (MHz) (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL/UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) . D2D communication may be through a variety of wireless D2D communications systems, such as for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
The wireless communications system may further include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication links 154, e.g., in a 5 gigahertz (GHz) unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the STAs 152 /AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
The small cell 102' may operate in a licensed and/or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell 102' may employ NR and use the same unlicensed frequency spectrum (e.g., 5 GHz, or the like) as used by the Wi-Fi AP 150. The small cell 102', employing NR in an unlicensed frequency spectrum, may boost coverage to and/or increase capacity of the access network.
The electromagnetic spectrum is often subdivided, based on frequency/wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
With the above aspects in mind, unless specifically stated otherwise, it should be understood that the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, it should be understood that the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, or may be within the EHF band.
A base station 102, whether a small cell 102' or a large cell (e.g., macro base station) , may include and/or be referred to as an eNB, gNodeB (gNB) , or another type of base station. Some base stations, such as gNB 180 may operate in a traditional sub 6 GHz spectrum, in millimeter wave frequencies, and/or near millimeter wave frequencies in communication with the UE 104. When the gNB 180 operates in millimeter wave or near millimeter wave frequencies, the gNB 180 may be referred to as a millimeter wave base station. The millimeter wave base station 180 may utilize beamforming 182 with the UE 104 to compensate for the path loss and short range. The base station 180 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and/or antenna arrays to facilitate the beamforming.
The base station 180 may transmit a beamformed signal to the UE 104 in one or more transmit directions 182'. The UE 104 may receive the beamformed signal from the base station 180 in one or more receive directions 182” . The UE 104 may also transmit a beamformed signal to the base station 180 in one or more transmit directions. The base station 180 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 180 /UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 180 /UE 104. The transmit and receive directions for the base station 180 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
The EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, an MBMS Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be in communication with a Home Subscriber Server (HSS) 174. The MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation as well as other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176. The IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS) , a PS Streaming Service, and/or other IP services. The BM-SC 170 may provide functions for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmission, may be used to authorize and initiate MBMS Bearer Services within a public land mobile network (PLMN) , and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS traffic to the base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start/stop) and for collecting eMBMS related charging information.
The core network 190 may include a Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195. The AMF 192 may be in communication with a Unified Data Management (UDM) 196. The AMF 192 is the control node that processes the signaling between the UEs 104 and the core network 190. Generally, the AMF 192 provides Quality of Service (QoS) flow and session management. All user IP packets are transferred through the UPF 195. The UPF 195 provides UE IP address allocation as well as other functions. The UPF 195 is connected to the IP Services 197. The IP Services 197 may include the Internet, an intranet, an IMS, a Packet Switch (PS) Streaming Service, and/or other IP services.
The base station may include and/or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a transmit reception point (TRP) , or some other suitable terminology. The base station 102 provides an access point to the EPC 160 or core network 190 for a UE 104. Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor/actuator, a display, or any other similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a network device, a mobility element of a network, a RAN node, a core network node, a network element, or a network equipment, such as a BS, or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , eNB, NR BS, 5G NB, access point (AP) , a TRP, or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station 181 may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central units (CU) , one or more distributed units (DUs) , or one or more radio units (RUs) ) . In some aspects, a CU 183 may be implemented within a RAN node, and one or more DUs 185 may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs 187. Each of the CU, DU and RU also can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
Base station-type operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
Although the present disclosure may focus on 5G NR, the concepts and various aspects described herein may be applicable to other similar areas, such as LTE, LTE-Advanced (LTE-A) , Code Division Multiple Access (CDMA) , Global System for Mobile communications (GSM) , or other wireless/radio access technologies.
Referring again to FIG. 1A, in certain aspects, the UE 104 may include an identification component 198 that is configured to identify periodicity and offset information configured for flexible measurement and prediction cycles used in time domain beam prediction. In particular, the identification component 198 is configured to receive periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. The identification component 198 is also configured to transmit a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
In certain aspects, the base station 102/180 (or other network entity with base station functionality) may include a configuration component 199 that is configured to configure periodicity and offset information for flexible measurement and prediction cycles used in time domain beam prediction. In particular, the configuration component 199 is configured to transmit periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. The configuration component 199 is also configured to receive a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
FIG. 1B shows a diagram illustrating an example disaggregated base station 181 architecture. The disaggregated base station 181 architecture may include one or more CUs 183 that can communicate directly with core network 190 via a backhaul link, or indirectly with the core network 190 through one or more disaggregated base station units (such as a Near-Real Time RIC 125 via an E2 link, or a Non-Real Time RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 183 may communicate with one or more DUs 185 via respective midhaul links, such as an F1 interface. The DUs 185 may communicate with one or more RUs 187 via respective fronthaul links. The RUs 187 may communicate respectively with UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 187.
Each of the units, i.e., the CUs 183, the DUs 185, the RUs 187, as well as the Near-RT RICs 125, the Non-RT RICs 115 and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter or transceiver (such as a radio frequency (RF) transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
In some aspects, the CU 183 may host higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 183. The CU 183 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof. In some implementations, the CU 183 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration. The CU 183 can be implemented to communicate with the DU 185, as necessary, for network control and signaling.
The DU 185 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 187. In some aspects, the DU 185 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3^rd Generation Partnership Project (3GPP) . In some aspects, the DU 185 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 185, or with the control functions hosted by the CU 183.
Lower-layer functionality can be implemented by one or more RUs 187. In some deployments, an RU 187, controlled by a DU 185, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 187 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 187 can be controlled by the corresponding DU 185. In some scenarios, this configuration can enable the DU (s) 185 and the CU 183 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O- Cloud) 189) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 183, DUs 185, RUs 187 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 187 via an O1 interface. The SMO Framework 105 also may include the Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 183, one or more DUs 185, or both, as well as an O-eNB, with the Near-RT RIC 125.
In some implementations, to generate AI/ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL/UL, and subframe 3 being configured with slot format 34 (with mostly UL) . While subframes 3, 4 are shown with slot formats 34, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically/statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
Other wireless communication technologies may have a different frame structure and/or different channels. A frame, e.g., of 10 milliseconds (ms) , may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 7 or 14 symbols, depending on the slot configuration. For slot configuration 0, each slot may include 14 symbols, and for slot configuration 1, each slot may include 7 symbols. The symbols on DL may be cyclic prefix (CP) orthogonal frequency-division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also referred to as single carrier frequency-division multiple access (SC-FDMA) symbols) (for power limited scenarios; limited to a single stream transmission) . The number of slots within a subframe is based on the slot configuration and the numerology. For slot configuration 0, different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For slot configuration 1, different numerologies 0 to 2 allow for 2, 4, and 8 slots, respectively, per subframe. Accordingly, for slot configuration 0 and numerology μ, there are 14 symbols/slot and 2^μ slots/subframe. The subcarrier spacing and symbol length/duration are a function of the numerology. The subcarrier spacing may be equal to 2^μ*15 kilohertz (kHz) , where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length/duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of slot configuration 0 with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology.
A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE.The RS may include demodulation RS (DM-RS) (indicated as R_x for one particular configuration, where 100x is the port number, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
FIG. 2B illustrates an example of various DL channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) , each CCE including nine RE groups (REGs) , each REG including four consecutive REs in an OFDM symbol. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . Additional BWPs may be located at greater and/or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe/symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the aforementioned DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) /PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
FIG. 2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgement (ACK) /non-acknowledgement (NACK) feedback. The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and/or UCI.
FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, IP packets from the EPC 160 may be provided to a controller/processor 375. The controller/processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller/processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression /decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding/decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation/demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate an RF carrier with a respective spatial stream for transmission.
At the UE 350, each receiver 354RX receives a signal through its respective antenna 352. Each receiver 354RX recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) . The frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller/processor 359, which implements layer 3 and layer 2 functionality.
The controller/processor 359 can be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller/processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller/processor 359 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
Similar to the functionality described in connection with the DL transmission by the base station 310, the controller/processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression /decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a respective spatial stream for transmission.
The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
The controller/processor 375 can be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller/processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 350. IP packets from the controller/processor 375 may be provided to the EPC 160. The controller/processor 375 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
At least one of the TX processor 368, the RX processor 356, and the controller/processor 359 may be configured to perform aspects in connection with identification component 198 of FIG. 1A.
At least one of the TX processor 316, the RX processor 370, and the controller/processor 375 may be configured to perform aspects in connection with configuration component 199 of FIG. 1A.
5G NR (New Radio) supports very high data rates with lower latency in sub-6 GHz and mmW frequency bands compared to LTE (4G) technology. Due to the propagation loss and other losses associated with the very high frequencies of mmW bands, directional communication is generally applied at such frequencies using antenna arrays with large numbers of antenna elements. As these directional links require accurate alignment of transmitted and received beams, beam pair alignment and other beam management operations have been introduced in 5G NR. Such beam management operations may include, for example, beam sweeping (e.g., covering a spatial area with a set of beams according to pre-specified intervals and directions) , beam measurement (e.g., evaluation of the quality of a received signal based on metrics such as reference signal receive power (RSRP) or signal to interference and noise ratio (SINR) ) , beam determination (e.g., selection of one or more suitable or best beams according to the beam measurements) , and beam reporting (e.g., reporting beam quality and beam decision information to the base station) . Beam management may thus allow UEs that are not in connection with a base station (e.g., in an idle mode or during initial access) , and UEs that are in connection with the base station (e.g., in a connected mode, during tracking, or otherwise when the UE is exchanging data with the network) , to acquire and maintain a set of transmission and reception beams to be used for uplink and downlink communications, respectively.
FIG. 4 illustrates an example 400 of beam management operations typically associated with 5G (NR) networks. UEs that are in an RRC_IDLE or RRC_INACTIVE mode 410 may perform beam management using tracking reference signals (TRS) and during initial access 412 using synchronization signal block (SSB) (wide) beam sweeping. SSBs may be associated with random access channel (RACH) occasions (ROs) or RACH preambles with which UEs may perform contention-based random access (CBRA) . UEs that are in an RRC_CONNECTED mode 414 may perform various beam management operations, for example, beam selection and refinement using SSBs or CSI-RS (e.g., P1/P2/P3 procedures) , beam selection and refinement using SRS (e.g., U1/U2/U3 procedures) , layer one (L1) -RSRP reporting, transmission configuration indicator (TCI) state configurations or indications, L1-SINR reporting, and other operations associated with beam management, enhanced beam management (eBM) , and further enhanced beam management (FeBM) . Connected UEs may also perform beam failure detection (BFD) based on beam measurements, in which case these UEs may perform beam failure recovery (BFR) 416 to remain in RRC_CONNECTED mode. UEs may perform BFD and BFR in primary cells (PCells) , primary secondary cells (PSCells) , or secondary cells (SCells) . Radio link failure 418 is also supported in beam management.
As illustrated in FIG. 4, UEs are also moving towards applying artificial intelligence (AI) or machine learning (ML) for beam management in target use cases for improving performance or reducing complexity of beam management operations. One such target use case in beam management is beam prediction in the time and/or spatial domain, where a base station or UE may utilize an AI/ML model to predict suitable or best beams based on previous beam measurements to reduce overhead and latency and improve accuracy in beam determination or selection. This use case may involve training, deploying, monitoring, and updating the AI/ML model to improve inferences or predictions of best beams for downlink or uplink communications.
AI/ML-based predictive beam management is an attractive alternative to conventional beam management. In conventional beam management, beam qualities or failures are identified via beam measurements. Measuring every beam to determine a best beam or a beam failure may require significant device power or overhead to achieve sufficient performance, limit beam accuracy if restrictions are imposed on the amount of power or overhead that can be used, and impact latency and throughput due to beam resuming efforts. However, in predictive beam management, non-measured beam qualities may be predicted, leading to reduced power and overhead, and future beam blockages or failures may be predicted, leading to improvements in accuracy, latency, or throughput. Moreover, beam prediction itself is a highly non-linear task, and thus AI/ML-based beam prediction may assist in this regard. For example, predicting future transmission beam qualities may depend on a UE’s moving speed or trajectory, the reception beams that are or will be used, interference, and other parameters that are difficult to model via conventional statistical signal processing methods.
AI/ML-based beam prediction and training may be performed at a UE or a base station. For instance, referring again to FIG. 4, during AI/ML-based beam management 420, a UE or base station may perform spatial domain (SD) and time domain (TD) based beam prediction or selection using a ML model 422, 423. Initially, the base station may perform a transmission beam sweep of various transmission beams respectively carrying an SSB or a CSI-RS associated with a different resource identifier. For instance, in one example of spatial domain based beam prediction or selection as illustrated in FIG. 4, a UE may perform L1-RSRP measurements of SSBs carried in wide transmission beams 424 within a given time instance. If beam prediction or selection is performed at the base station, the UE may report these RSRPs to the base station (e.g., in a CSI report) for input to the ML model 422 at the base station. Alternatively, if beam prediction or selection is performed at the UE, the UE may input these measured RSRPs into the ML model 422 at the UE. The ML model 422 in turn may output predicted RSRPs, predicted candidate beams, or predicted beam failures or blockages of narrow transmission beams 426 directed towards the UE. Using these predicted results, the base station or UE may perform codebook-based, spatial domain-based, beam prediction or selection 427, which may assist in beam management operations related to initial access, secondary cell group setup, serving beam refinement, and link quality (CQI or PMI) and interference adaptation. As a result, ML-based beam management may result in less beam measurements being performed at the UE and thereby reduce UE power consumption, since the UE may obtain predicted information regarding one set of beams (i.e., narrow transmission beams 426) from RSRP measurements of a different set of beams (i.e., wide transmission beams 424) .
In another example of spatial domain based beam prediction or selection as illustrated in FIG. 4, a UE may perform L1-RSRP measurements of CSI-RSs carried in narrow transmission beams 428 within a given time instance. If beam prediction or selection is performed at the base station, the UE may report these RSRPs to the base station (e.g., in a CSI report) for input to the ML model 423 at the base station. Alternatively, if beam prediction or selection is performed at the UE, the UE may input these measured RSRPs into the ML model 423 at the UE. The ML model 423 in turn may output a predicted point of direction, angle of descent (AoD) , or angle of arrival (AoA) of alternate transmission beam 430 directed towards the UE. Using these predicted results, the base station or UE may perform non-codebook-based, spatial domain-based, beam prediction or selection 431, which may assist in beam management operations related to serving beam refinement and link quality (CQI or PMI) and interference adaptation. As a result, improved beam management accuracy may result without excessive beam sweeping using AI/ML, since the UE may obtain predicted information regarding one set of beams (i.e., alternate transmission beam 430) from RSRP measurements of a different set of beams (i.e., narrow transmission beams 428) .
In an additional example of spatial domain and time domain based beam prediction or selection as illustrated in FIG. 4, a UE may perform L1-RSRP measurements of SSBs carried in wide transmission beams 424 or CSI-RS carried in narrow transmission beams 428 within multiple measurement occasions 432. If beam prediction or selection is performed at the base station, the UE may report these RSRPs to the base station (e.g., in a CSI report) for input to the ML model 422, 423 at the base station. Alternatively, if beam prediction or selection is performed at the UE, the UE may input these measured RSRPs into the ML model 422, 423 at the UE. The ML model 422, 423 in turn may output predicted information of narrow transmission beams 426 or alternate transmission beam 430 directed towards the UE, respectively. Using these predicted results, the base station or UE may perform codebook-based or non-codebook based, spatial domain and time domain-based, beam prediction or selection 433, which may assist in beam management operations related to serving beam refinement, link quality (CQI or PMI) and interference adaptation, beam failure or blockage prediction, and radio link failure prediction. As a result, ML-based beam management may result in less beam measurements being performed at the UE and reduce UE power consumption as well as provide improved beam management accuracy without excessive beam sweeping. Moreover, ML-based beam management may increase usable memory capacity in the UE or base station (the device) and extend device battery life.
Thus, when performing AI/ML-based beam management, a UE or base station may perform a spatial-domain downlink beam prediction or a temporal downlink beam prediction of one Set A of beams (e.g., narrow transmission beams 426 or alternate transmission beam 430) based on measurement results of another Set B of beams (e.g., L1-RSRPs or L1-SINRs of physical reference signals carried in wide transmission beams 424 or narrow transmission beams 428) . Set B beams may be a subset of Set A beams or may be otherwise different than Set A beams. For example, Set A beams may include narrow beams while Set B beams may include wide beams, although Set A beams and Set B beams can be different than narrow-wide in other examples. Regardless of how Set A beams or Set B beams are defined, a main difference between these two sets of beams is that while Set B beams carry physical reference signals (e.g., SSBs or CSI-RS) , Set A beams may not carry any physical information (e.g., these predicted/selected beams may not actually be transmitted by the base station or received by the UE) .
Set B beams may carry physical reference signals, such as SSBs or CSI-RS (the latter of which is more likely for narrow beams) , in channel measurement resources (CMRs) associated with a CSI or L1-RSRP/L1-SINR report. Such reference signals may be transmitted periodically, semi-persistently, or aperiodically. A CMR may also indicate a quasi-colocation (QCL) relationship of the physical reference signal with another reference signal (e.g., an SSB or another CSI-RS) . This QCL relationship may be configured via an RRC configuration for periodic reference signals (e.g., via a CSI resource configuration for a CSI-RS) , indicated via a MAC-CE for semi-persistent reference signals (e.g., via a MAC-CE activation command activating a semi-persistent CSI-RS) , or indicated via a DCI for aperiodic reference signals (e.g., in association with an aperiodic CSI-RS triggering state configuration) .
Moreover, to configure the UE to measure and report a signal quality of a physical reference signal in a CMR, the base station may provide a CSI report configuration indicating the UE which quantity to report (e.g., via a parameter reportQuantity or another name) . This report quantity may be, for example depending on whether the CMR carries an SSB or a CSI-RS, the RSRP of a specific SSB index (e.g., reportQuantity=ssb-Index-RSRP) , the SINR of a specific SSB index (e.g., reportQuantity=ssb-Index-SINR) , the RSRP of a specific CSI-RS index (e.g., reportQuantity=cri-RSRP) , or the SINR of a specific CSI-RS index (e.g., reportQuantity=cri-SINR) . Thus, the CSI report configuration may configure joint SSB resource indicator (SSBRI) /CSI-RS resource indicator (CRI) and L1-RSRP/L1-SINR beam reporting. Moreover, the CSI report configuration may indicate the UE to report the aforementioned measurements respectively for an RRC configured number of reported reference signals (in parameter nrofReportedRS or another name) , which may typically be up to two or four different SSBRI or CRI depending on UE capability for a given CSI report configuration. The CSI report configuration may also indicate a reporting periodicity and offset for periodic or semi-persistently scheduled CSI reports (in parameter reportSlotConfig associated with CSI-ReportPeriodicityAndOffset or another name) .
In addition to indicating report quantities, reporting periodicity and offsets, and related information, the CSI report configuration may indicate configuration information or settings for the CMRs that the UE measures for a given CSI report. Such information may include, for example, a CSI resource configuration indicating a resource setting for the CMRs (in parameter resourcesforChannelMeasurement associated with CSI-ResourceConfigID or another name) , a CMR set such as a SSB resource set or a CSI-RS resource set including the CMRs to be measured (in parameter CSI-RS-ResourceSetList or another name) , the CMRs of the CMR set whose measured report quantities are to be included in the CSI report (in parameter nzp-CSI-RS-Resources or another name or in a similar SSB parameter) , and a periodicity and offset for respective CMRs (in parameter periodicityAndOffset associated with CSI-ResourcePeriodicityAndOffset or another name) . However, while such CSI report configurations may adequately support single measurement and reporting cycles for physical reference signals during general beam management, this framework may not sufficiently support AI/ML-based beam management including multi-shot or flexible measurement and prediction cycles respectively for Set B beams and Set A beams.
FIG. 5 illustrates an example 500 of UE-based beam prediction in the temporal domain, including flexible measurement cycles for Set B beams and prediction cycles for Set A beams. Initially, a UE may perform measurements of consecutive Set B beams in CMRs of a CMR set during one or more measurement cycles 502. For instance, in the example of FIG. 5, the UE may measure L1-RSRP or L1-SINR of reference signals carried in multiple, respective CMRs of a CMR set 503 at respective time instances during a single measurement cycle 502 (e.g., in a CMR set burst, or a group of time instances associated with a CMR set) , and the UE may perform similar measurements of other CMRs in the same CMR set 503 during subsequent, consecutive measurement cycles 502 (e.g., in consecutive CMR set bursts, or consecutive groups of time instances associated with a CMR set) . The reference signals may include, for example, SSBs in wide transmission beams 424 or CSI-RS in narrow transmission beams 428 such as illustrated in FIG. 4. Moreover, the Set B beams associated with one measurement cycle may be the same as, or different than, the Set B beams associated with another measurement cycle.
Following the measurement cycle (s) 502, the UE may predict and report channel characteristics of Set A beams, such as L1-RSRPs, L1-SINRs, a number K beams with the largest L1-RSRPs/L1-SINRs, or the like, during one or more prediction cycles 504. The UE may perform these predictions using the Set B beam measurements obtained during the measurement cycle (s) 502. For instance, the UE may input these measurements as input into an AI/ML-based beam prediction model (e.g., ML model 422, 423 of FIG. 3) to derive L1-RSRP (s) or L1-SINR (s) of certain Set A beams during a single prediction cycle, and the UE may perform similar predictions of other Set A beams in subsequent, consecutive prediction cycles following the measurement cycle 502. The Set A beams that the UE predicts during a prediction cycle may be the same as, or different than, the Set B beams that the UE measured during measurement cycle (s) 502. For example, the UE may measure a small number of wide transmission beams 424 in during its measurement cycle (s) 502 and predict a large number of narrow transmission beams 426 during its prediction cycle (s) 504, or the UE may measure a down-sampled number of narrow transmission beams 428 during its measurement cycle (s) 502 and predict a larger number of narrow transmission beams such as alternate transmission beam 430 during its prediction cycle (s) 504.
As previously described, while the Set B beams which the UE measures in measurement cycle (s) 502 carry physical reference signals (e.g., SSBs or CSI-RS) , the Set A beams which the UE predicts in prediction cycle (s) 504 may not carry any physical information (e.g., these predicted/selected beams may not actually be transmitted by the base station or received by the UE) . In other words, Set A beams may be considered to carry virtual reference signals, or more practically, virtual CSI-RS (since Set A beams are generally narrow beams which would not be as conducive for virtual SSBs) . These virtual reference signals associated with predicted set A beams may be configured in different resources than CMRs, which resources are referred to throughout this disclosure as channel prediction resources (CPRs) . CPRs may be configured in a similar manner as CMRs (e.g., physical CSI-RS) . For example, CPRs may be configured within a resource set, referred to throughout this disclosure as a CPR set, CPRs may be transmitted periodically, semi-persistently, or aperiodically, and UEs may be configured to report predicted channel characteristics associated with CPRs via the CSI report configuration. Thus, in the example of FIG. 5, the UE may predict and report L1-RSRP or L1-SINR of virtual reference signals associated with multiple, respective CPRs individually corresponding to respective Set A beams of a CPR set 505 at respective time instances during a single prediction cycle (e.g., in a burst of consecutive prediction and/or reporting occasions, or a group of time instances associated with a CPR set) , and the UE may perform similar predictions for and reporting of other CPRs in the same CPR set 505 during subsequent, consecutive prediction cycles (e.g., in multiple bursts of consecutive prediction and/or reporting occasions, or consecutive groups of time instances associated with a CPR set) .
After the prediction cycle (s) 504, the UE may again perform measurements of CMRs associated with respective Set B beams during subsequent measurement cycle (s) 506. For example, as illustrated in FIG. 5, the UE may again measure L1-RSRP or L1-SINR of reference signals carried in four, respective CMRs of the same CMR set 503 during consecutive, subsequent measurement cycles 506. Following these subsequent measurement cycle (s) 506, the UE may again perform prediction and reporting of CPRs associated with respective Set A beams in the same CPR set 505 during subsequent prediction cycle (s) 508. For example, as illustrated in FIG. 5, the UE may again predict and report L1-RSRP or L1-SINR of virtual reference signals associated with multiple, respective CPRs of the same CPR set during consecutive, subsequent prediction cycles 508. Thus, multiple consecutive, measurement cycles 502, 506 may be alternatingly configured in time between multiple sets of prediction cycles 504, 508. For instance, measurement cycles 502, 506 may be separated by prediction cycles 504 in the time domain, while prediction cycles 504, 508 may be separated by measurement cycles 506 in the time domain. Moreover, the set B beams that are transmitted and measured in measurement cycles 506 may be the same as, or different than, the set B beams in measurement cycles 502, for example, in terms of beam shape, direction, or QCL.
However, current CSI report setting frameworks allow for configuration of only a single measurement periodicity (in parameter periodicityAndOffset associated with CSI-ResourcePeriodicityAndOffset or another name) and a single reporting periodicity (in parameter reportSlotConfig associated with CSI-ReportPeriodicityAndOffset or another name) for periodic or semi-persistently scheduled CSI reports. As a result, a base station may not be able to successfully indicate to the UE, via a single CSI report setting and its associated configurations, the periodic behaviors of multi-shot or flexible prediction cycles 504, 508 carrying CPRs as well as the periodic behaviors of multi-shot or flexible measurement cycles 502, 506 carrying CMRs such as illustrated in FIG. 5. While the base station may attempt to bypass this framework restriction by frequently activating or triggering aperiodic or semi-persistent CSI measurements or reports through dynamic signaling (e.g., one activation or trigger for each measurement cycle 502, 506 and prediction cycle 504, 508) , such signaling may be inefficient and lead to unnecessary additional UE power consumption (offsetting the power savings of time domain beam prediction) . Therefore, it would be helpful to enhance the aforementioned CSI report setting framework to provide signaling support for such TD beam prediction timeline behaviors with flexible numbers of measurement and prediction cycles to allow the base station to efficiently indicate (and the UE to consequently determine) when to perform Set B beam measurements and Set A beam predictions and reporting.
Accordingly, aspects of the present disclosure provide for enhancements to CSI report settings to support multi-shot measurement cycles (e.g., for measuring Set B beams) and multi-shot prediction cycles (e.g., for predicting and reporting Set A beams) . In one aspect, the base station may configure, and thus the UE may identify from the configuration, periodicity and offset information for a CMR set including CMRs associated with a single CSI report setting, as well as periodicity and offset information for prediction or reporting of channel characteristics associated with a CPR set including CPRs associated with the same CSI report setting. For instance, the periodicity and offset information may include multiple periodicities associated with the CMRs, including a first measurement periodicity P_1, CMR indicating the timing of consecutive CMR set bursts with respect to one another (e.g., the timing between measurement cycles 502) , a quantity N_CMR of consecutive CMR set bursts separated in time by P_1, CMR (e.g., a number of measurement cycles 502) , and a second measurement periodicity P_2, CMR indicating the time domain periodicity for such N_CMR CMR set bursts (e.g., the timing between an initial one of measurement cycles 502 and an initial one of measurement cycles 506) . Alternatively or additionally, the periodicity and offset information may include multiple periodicities associated with the CPRs (or the prediction and/or reporting of channel characteristics associated with the CPRs) , including a first periodicity P_1, CPR indicating the timing of bursts of consecutive prediction and/or reporting occasions with respect to one another (e.g., the timing between prediction cycles 504) , a quantity N_CPR of bursts of consecutive prediction and/or reporting occasions separated in time by P_1, CPR (e.g., a number of prediction cycles 504) , and a second periodicity P_2, CPR indicating the time domain periodicity for such N_CPR bursts of prediction and/or reporting occasions (e.g., the timing between an initial one of prediction cycles 504 and an initial one of prediction cycles 508) . With this periodicity and offset information, the base station may successfully configure multi-shot or flexible measurement and prediction cycles for the UE to identify and apply in its periodic or semi-persistent CSI reporting of Set B beams and Set A beams respectively under a same, single CSI report setting, thereby efficiently achieving the performance gains associated with AI/ML-based beam management.
FIG. 6 illustrates an example 600 of a CSI report setting 602 associated with periodicity and offset information 604 indicating the timing of multi-shot or flexible measurement cycles 606, 608 (e.g., for Set B beams) and prediction cycles 610, 612 (e.g., for Set A beams) . With reference to FIG. 5, measurement cycles 606 may correspond to measurement cycles 502, measurement cycles 608 may correspond to measurement cycles 506, prediction cycles 610 may correspond to prediction cycles 504, and prediction cycles 612 may correspond to prediction cycles 508. The periodicity and offset information 604 may include at least one of: a combination of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , and second measurement periodicity 618 (P_2, CMR) , a combination of first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 (P_2, CPR) , or a combination of the foregoing. In other examples, the periodicity and offset information 604 may include one or more of, or any combination of, first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, _CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 (P_2, CPR) . First measurement periodicity 614 (P_1, CMR) may indicate the timing of consecutive CMR set bursts with respect to one another, quantity 616 (N_CMR) may indicate a number of consecutive CMR set bursts separated in time by P_1, CMR, second measurement periodicity 618 (P_2, CMR) may indicate the time domain periodicity for such N_CMR CMR set bursts, first periodicity 620 (P_1, CPR) may indicate the timing of bursts of consecutive prediction and/or reporting occasions with respect to one another, quantity 622 (N_CPR) may indicate a number of bursts of consecutive prediction and/or reporting occasions separated in time by P_1, CPR, and second periodicity 624 (P_2, CPR) may indicate the time domain periodicity for such N_CPR bursts of prediction and/or reporting occasions. For example, first measurement periodicity 614 (P_1, CMR) may indicate the timing between measurement cycles 606, quantity 616 (N_CMR) may indicate the number of measurement cycles 606, second measurement periodicity 618 (P_2, CMR) may indicate the timing between an initial one of measurement cycles 606 and an initial one of measurement cycles 608, first periodicity 620 (P_1, CPR) may indicate the timing between prediction cycles 610, quantity 622 (N_CPR) may indicate the number of prediction cycles 610, and second periodicity 624 (P_2, CPR) may indicate the timing between an initial one of prediction cycles 610 and an initial one of prediction cycles 612. Alternatively, second periodicity 624 (P_2, CPR) may indicate the timing between different reference points than the initial one of prediction cycles 610 and the initial one of prediction cycles 612, as described in more detail below with reference to FIG. 7.
In one example, the periodicity and offset information 604 may be configured such that the time domain occasion of a first group of N_CPR bursts of consecutive prediction and/or reporting occasions is after the time domain occasion of a first group of N_CMR consecutive CMR set bursts, such that the time domain occasion of a second group of N_CMR consecutive CMR set bursts is after the time domain occasion of the first group of N_CPR bursts of consecutive prediction and/or reporting occasions, and such that the time domain occasion of a second group of N_CPR bursts of consecutive prediction and/or reporting occasions is after the time domain occasion of the second group of N_CMR consecutive CMR set bursts. For instance, the base station may configure, and the UE may identify, periodicity and offset information 604 to indicate consecutive groups of time instances associated with CMRs (consecutive CMR set bursts) and consecutive groups of time instances associated with CPRs (consecutive CPR set bursts) occurring in an alternating pattern such as illustrated in FIG. 6. As an example, the first group of N_CMR consecutive CMR set bursts may correspond to measurement cycles 606 (e.g., measurement cycles 1 and 2) , the first group of N_CPR bursts of consecutive prediction and/or reporting occasions that immediately follows may correspond to prediction cycles 610 (e.g., predict and report cycles 1, 2, and 3) , the second group of N_CMR consecutive CMR set bursts that immediately follows may correspond to measurement cycles 608 (e.g., measurement cycles 3 and 4) , and the second group of N_CPR bursts of consecutive prediction and/or reporting occasions that immediately follows may correspond to prediction cycles 612 (e.g., predict &report cycles 4, 5, and 6) .
Moreover, the periodicity and offset information 604 may indicate that the first group of N_CMR consecutive CMR set bursts and the second group of N_CMR consecutive CMR set bursts are adjacent to one another in the time domain, and that the first group of N_CPR bursts of consecutive prediction and/or reporting occasions and that the second group of N_CPR bursts of consecutive prediction and/or reporting occasions are adjacent to one another in the time domain. Here, one group of consecutive CMR set bursts may be considered to be “adjacent” to another group of consecutive CMR set bursts despite an intervening group of consecutive CPR set bursts, while similarly, one group of consecutive CPR set bursts may be considered to be “adjacent” to another group of consecutive CPR set bursts despite an intervening group of CMR set bursts. Thus, in the example of FIG. 6, measurement cycles 606 are adjacent to measurement cycles 608, while prediction cycles 610 are adjacent to prediction cycles 612.
In one example, periodicity and offset information 604 may be configured such that P_2, CMR and P_2, CPR are equal. For instance, the base station may expressly configure one of these periodicities while the other periodicity may simply be derived from the expressly configured periodicity. Similarly, the UE may identify one of these periodicities from a configuration of periodicity and offset information 604 and derive the other periodicity from the configuration. This approach provides simplicity in configuring or identifying the periodicity and offset information 604, since one periodicity may be expressly configured with the other periodicity omitted from the configuration, but the configuration is not limited in this manner. For instance, in other examples, P_2, CMR and P_2, CPR may not be equal, or both periodicities may be expressly configured notwithstanding whether or not their values are the same.
In one example, second measurement periodicity 618 (P_2, CMR) may be defined as a time domain offset between a starting symbol of a leading CMR set burst (in the time domain) out of N_CMR consecutive CMR set bursts in a first group of CMR set bursts, and the starting symbol of another leading CMR set burst (in the time domain) out of N_CMR consecutive CMR set bursts in a second group of CMR set bursts, where the first group of CMR set bursts and the second group of CMR set bursts are adjacent with respect to each other in the time domain. For instance, the value of second measurement periodicity 618 (P_2, CMR) may be equal to the difference in time between an initial symbol of a leading, measurement cycle 606 in one group of N_CMR CMR set bursts and an initial symbol of another leading, measurement cycle 608 in another group of N_CMR CMR set bursts, where measurement cycles 606 are “adjacent” to measurement cycles 608 as previously described. For example, as illustrated with reference to FIG. 6, the base station may configure, and the UE may identify from the configuration, second measurement periodicity 618 (P_2, CMR) as the difference in time between the starting symbol of the initial time instance of measurement cycle 1 (within the group of N_CMR = 2 measurement cycles including measurement cycles 1 and 2 in FIG. 6) and the starting symbol of the initial time instance of measurement cycle 3 (within the group of N_CMR = 2 measurement cycles including measurement cycles 3 and 4 in FIG. 6) .
In one example, second periodicity 624 (P_2, CPR) may similarly be defined as a time domain offset between a time domain occasion of a leading channel characteristics prediction occasion out of N_CPR bursts of consecutive prediction occasions in a first group of prediction occasion bursts or CPR set bursts, and the time domain occasion of another leading channel characteristics prediction occasion out of N_CPR bursts of consecutive prediction occasions in a second group of prediction occasion bursts or CPR set bursts, where the first group of prediction occasion bursts and the second group of prediction occasion bursts are adjacent with respect to each other in the time domain. For instance, the value of second periodicity 624 (P_2, CPR) may be equal to the difference in time between an initial time instance of a leading, prediction cycle 610 in one group of N_CPR CPR set bursts and an initial time instance of another leading, prediction cycle 612 in another group of N_CPR CPR set bursts, where prediction cycles 610 are “adjacent” to prediction cycles 612 as previously described. For example, as illustrated with reference to FIG. 6, the base station may configure, and the UE may identify from the configuration, second periodicity 624 (P_2, CPR) as the difference in time between the initial time instance of predict and report cycle 1 (within the group of N_CPR = 3 predict and report cycles including predict and report cycles 1, 2, and 3 in FIG. 6) and the initial time instance of predict and report cycle 4 (within the group of N_CPR = 3 predict and report cycles including predict and report cycles 4, 5, and 6 in FIG. 6) . Alternatively, rather than configuring and identifying second periodicity 624 (P_2, CPR) with respect to the prediction time instances themselves such as described with respect to FIG. 6, this periodicity may be configured and identified with respect to CSI reporting occasions associated with these time instances, as shown and described with respect to FIG. 7.
FIG. 7 illustrates an example 700 of periodicity and offset information 702 indicating the timing of a periodicity 704 (P_2, CPR) for multi-shot or flexible prediction cycles 706, 708 (e.g., for Set A beams) . With reference to FIGs. 5 and 6, prediction cycles 706 may correspond to prediction cycles 504, 610, and prediction cycles 708 may correspond to prediction cycles 508, 612. The example of FIG. 7 illustrates various configuration possibilities of periodicity 704 (P_2, CPR) with respect to CSI reporting occasions which the base station may configure in association with one or more of prediction cycles 706 and one or more of prediction cycles 708. For instance, the base station may configure a single CSI reporting occasion 710, 712 for multiple groups of consecutive prediction occasions (a group of multiple N_CPR CPR set bursts) , such as one CSI reporting occasion 710 including a bundled CSI report for prediction cycles 706 (including predict and report cycles 1, 2, and 3) and another CSI reporting occasion 712 including a bundled CSI report for prediction cycles 708 (including predict and report cycles 4, 5, and 6) . Alternatively, the base station may configure multiple CSI reporting occasions 714, 716 for individual, respective groups of consecutive prediction occasions (an individual N_CPR CPR set burst) , such as one CSI reporting occasion 714 including an individual CSI report for one prediction cycle 706 (such as predict and report cycle 1) , another CSI reporting occasion 714 including an individual CSI report for another prediction cycle 706 (such as predict and report cycle 2) , and so forth at least up to another CSI reporting occasion 716 including an individual CSI report for another prediction cycle 708 (such as predict and report cycle 6) . In some cases, the base station may alternatively configure a single CSI reporting occasion 710 for multiple groups of multiple N_CPR CPR set bursts, such as only one CSI reporting occasion 710 including a bundled CSI report for prediction cycles 706 and 708 (including predict and report cycles 1, 2, 3, 4, 5, and 6) .
In the illustrated example, CSI reporting occasions 710, 712, 714, 716 are placed prior to their associated prediction cycles 706, 708 since the UE may use these reporting occasions to report in CSI the UE’s historical measurements of Set B beams prior to predicting Set A beams in the subsequent prediction occasions. This chronology is particularly significant for single CSI reporting occasions 710, 712 including results for multiple channel characteristics prediction occasions, since placement of these CSI reporting occasions at times near the leading or initial, associated prediction cycles 706, 708 respectively may provide more useful information to the base station than if they were placed elsewhere. However, in other examples, CSI reporting occasions 714, 716 may be configured instead to be after their associated prediction cycles 706, 708, thus following the same configuration logic applied to CSI reporting occasions associated with CMRs and thereby simplifying CSI reporting configurations for CMRs and CPRs.
In one example, periodicity 704 (P_2, CPR) may be defined as a time domain offset between a slot of a leading CSI reporting occasion (in the time domain) out of N_CPR bursts of consecutive reporting occasions in a first group of reporting occasion bursts, and the slot of another leading CSI reporting occasion out of N_CPR bursts of consecutive reporting occasions in a second group of reporting occasion bursts, where the first group of reporting occasion bursts and the second group of reporting occasion bursts are adjacent with respect to each other in the time domain. For instance, the value of periodicity 704 (P_2, CPR) may be equal to the difference in time between a slot including an initial CSI reporting occasion associated with a leading, prediction cycle 706 in one group of N_CPR CPR set bursts and a slot including an initial CSI reporting occasion associated with another leading, prediction cycle 708 in another group of N_CPR CPR set bursts, where prediction cycles 706 are “adjacent” to prediction cycles 708 as previously described. Various examples of CSI reporting occasions from which periodicity 704 (P_2, CPR) may be identified are illustrated in FIG. 7. For example, as illustrated with reference to FIG. 7, the base station may configure, and the UE may identify from the configuration, periodicity 704 (P_2, CPR) as the difference in time between either: the slots carrying single CSI reporting occasions 710 and 712, the slots carrying CSI reporting occasions 714, 716 configured to occur prior to their associated prediction cycles 706, 708, or the slots carrying CSI reporting occasions 714, 716 configured to occur after their associated prediction cycles 706, 708. Thus, second periodicity 624 or periodicity 704 (P_2, CPR) may be configured and identified using either the timing of the prediction occasions (as illustrated in FIG. 6) or the timing of the reporting occasions (as illustrated in FIG. 7) , and the base station may configure the UE to report predicted channel characteristics regarding respective bursts of N_CPR prediction cycles in multiple CSI reports at slots next to their associated prediction occasions according to this configured periodicity. If however the base station configures only a single CSI reporting occasion for reporting predicted channel characteristics regarding respective bursts of N_CPR prediction cycles in a single CSI report, such as only CSI reporting occasion 710 for both prediction cycles 706 and 708, then P_2, CPR may be configured and identified using only the timing of the prediction occasions (as illustrated in FIG. 6) .
FIG. 8 illustrates an example 800 of a call flow between a UE 802 and a base station 804. Initially, base station may transmit periodicity and offset information 806 to the UE, such as periodicity and offset information 604, 702. The periodicity and offset information 806 may include, for example, first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . Using this periodicity and offset information 806, the base station may schedule and transmit a reference signal 808, such as CSI-RS, to the UE, and the UE may be scheduled, activated, or triggered to provide a CSI report 810 to the base station. For instance, the periodicity and offset information 806 may indicate that the reference signal 808 is to be carried, for example, in CMRs associated with different transmission beams (Set B beams) within one or more CMR sets which are periodically provided in bursts or groups of time domain occasions or time instances within measurement cycles 502, 506, 606, 608. Moreover, the periodicity and offset information 806 may indicate that the CSI report 810 is to include CSI which the UE is to measure from the reference signal 808 carried in the CMR set (s) associated with the Set B beams, CSI which the UE is to predict for example using AI/ML for CPRs associated with predicted beams (Set A beams) within one or more CPR sets periodically configured in bursts or groups of time domain occasions or time instances within prediction cycles 504, 508, 610, 612, 706, 708, or CSI which is to include a combination of the foregoing CSI. This periodicity and offset information 806 may be configured in association with a single CSI reporting configuration, allowing flexible or multi-shot measurement and prediction cycles in AI/ML-based beam management to be achieved.
In a first aspect, the periodicity and offset information 806 may be carried via an RRC configuration 812. For instance, the periodicity and offset information 806 may be carried via a CSI report setting 814 or configuration, such as CSI report setting 602 (CSI-ReportConfig or a similar configuration of another name) , which setting may be associated with a single CMR set such as CMR set 502 and a single CPR set such as CPR set 505. For example, the CSI report setting 814 may indicate a CSI resource setting 816 (such as CSI-ResourceConfig or a similar setting of another name) , a CMR set setting 818 or configuration (such as a CSI-RS resource set configuration, for example NZP-CSI-RS-ResourceSet or a similar setting of another name) , a CPR set setting 820 or configuration (which may be configured similarly as CMR set setting 818) , periodicity and offset information 806, and other parameters indicating the CMRs and CPRs or the time instances or occasions of measurement cycles 502, 506, 606, 608 and prediction cycles 504, 508, 610, 612, 706, 708 respectively.
In one example where the periodicity and offset information 806 is carried via CSI report setting 814 in RRC configuration 812, the CSI report setting 814 may directly indicate the periodicity and offset information 806. For instance, the CSI report setting 814 itself (as opposed to via the CSI resource setting 816, CMR set setting 818, or CPR set setting 820) may expressly indicate the values of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . In another example, the CSI report setting 814 may configure the reporting occasions of predicted channel characteristics, such as prediction cycles 504, 508, 610, 612, 706, 708, by indicating a portion of the periodicity and offset information 806. For instance, the CSI report setting 814 itself may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with the remainder of the periodicity and offset information 806 being indicated in the same setting or elsewhere. In another example, the CMR set setting 818 associated with the CSI report setting 814 may indicate a portion of the periodicity and offset information 806 for CMRs, and the CSI report setting 814 itself may indicate a remainder of the portion of the periodicity and offset information 806 for CMRs. For instance, CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , while CSI report setting 814 may indicate quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may indicate a portion of the periodicity and offset information 806 for CPRs, and the CSI report setting 814 itself may indicate a remainder of the portion of the periodicity and offset information 806 for CPRs. For instance, CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , while CSI report setting 814 may indicate quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere.
In another example where the periodicity and offset information 806 is carried in RRC configuration 812, rather than being carried directly at least in some portion via the CSI report setting 814, the periodicity and offset information 806 may be carried by the CSI resource setting 816, or by the CMR set setting 818 or CPR set setting 820, which are associated with the CSI report setting 814. Again, the CSI report setting 814 may be associated with a single CMR set such as CMR set 502 and a single CPR set such as CPR set 505. In one example, the CMR set setting 818 associated with the CSI report setting 814 may indicate a portion of the periodicity and offset information 806 for CMRs, and the CSI resource setting 816 associated with the CMR set setting 818 may itself indicate a remainder of the portion of the periodicity and offset information 806 for CMRs. For instance, CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , while CSI resource setting 816 may indicate quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may indicate a portion of the periodicity and offset information 806 for CPRs, and the CSI resource setting 816 associated with the CPR set setting 820 may itself indicate a remainder of the portion of the periodicity and offset information 806 for CPRs. For instance, CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , while CSI resource setting 816 may indicate quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere. In another example, the CMR set setting 818 may itself indicate a portion of the periodicity and offset information 806 for CMRs, without relying on the CSI resource setting 816 to directly indicate the remaining CMR information. For instance, the RRC configuration 812 carrying CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , and second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may itself indicate a portion of the periodicity and offset information 806 for CPRs, without relying on the CSI resource setting 816 to directly indicate the remaining CPR information. For instance, the RRC configuration 812 carrying CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere.
In a further example where the periodicity and offset information 806 is carried in RRC configuration 812, the periodicity and offset information 806 may be carried in association with the CSI report setting 814 such as described with respect to the previous examples, but here the CSI report setting 814 is associated with multiple CMR sets or multiple CPR sets rather than a single CMR or CPR set. For instance, multiple CMR sets 503 (in respective CMR set settings 818) , multiple CPR sets 505 (in respective CPR set settings 820) , or both may be associated with CSI report setting 602, where each of the respective CMR sets 503 or CPR sets 505 is associated with a single periodicity, and thus the UE may implicitly identify the periodicity and offset information 806 based on these multiple CMR or CPR sets. For example, with reference to FIG. 6, instead of measurement cycles 606, 608 being associated with a same CMR set and thus having a same periodicity and offset as in the previously described examples, different measurement cycles may be associated with different CMR sets that may be configured with different periodicity and offsets. For example, measurement cycles 1 and 3 may be configured in one CMR set associated with the CSI report setting to have one periodicity and offset while measurement cycles 2 and 4 may be configured in another CMR set associated with the same CSI report setting to have a same periodicity but different offset. Similarly, instead of prediction cycles 610, 612 being associated with a same CPR set and thus having a same periodicity and offset as in the previously described examples, different prediction cycles may be associated with different CPR sets that may be configured with different periodicity and offsets. For example, prediction cycles 1 and 4 may be configured in one CPR set associated with the CSI report setting to have one periodicity and offset while prediction cycles 2 and 5 may be configured in another CPR set associated with the same CSI report setting to have a same periodicity but different offset. Thus, the base station may configure, and the UE may correspondingly identify, first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, _CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and thus the periodicity of the different measurement cycles 606, 608 and prediction cycles 610, 612, from their corresponding CMR sets or CPR sets associated with the same CSI report configuration.
In a second aspect, the periodicity and offset information 806 may be carried via a MAC-CE 822. In one example where the periodicity and offset information 806 is carried via MAC-CE 822, the MAC-CE 822 may be one configured to activate a semi-persistently scheduled CSI report or a semi-persistently scheduled CMR set or CPR set which are configured in or in association with CSI report setting 814, and this MAC-CE may indicate at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . The indicated periodicity and offset information in the MAC-CE 822 may be, for example, a selected option out of multiple, RRC-configured options for periodicity and offset information 806 that has been indicated in RRC configuration 812 according to one of the aforementioned examples (where the periodicity and offset information 806 is carried in RRC configuration 812) . For example, CSI report setting 814 that configures CSI report 810, CMR set 503, or CPR set 505 may further indicate multiple options or choices for first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and the MAC-CE 822 which subsequently activates the CSI report 810, CMR set 503, or CPR set 505 may select one of these multiple choices to be applied for the communication of reference signal 808 and CSI report 810. Alternatively, rather than indicating the periodicity and offset information 806 as a selected option from one of multiple previously RRC-configured choices, the MAC-CE 822 may directly indicate the periodicity and offset information 806. For example, the MAC-CE 822 may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) . This indication in MAC-CE 822 of at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) may be performed in a similar manner as described in any of the foregoing examples where such information is carried in RRC configuration 812.
In another example where the periodicity and offset information 806 is carried via MAC-CE 822, the MAC-CE 822 may be a dedicated MAC-CE for this purpose (rather than one configured to also activate a semi-persistently scheduled CSI report, CMR set, CPR set for example) . For example, the dedicated MAC-CE may have a different logical channel identifier (LCID) than a MAC-CE which activates a semi-persistently scheduled CSI report or a semi-persistently scheduled CMR set or CPR set. Such dedicated MAC-CE may indicate, or update a previous indication of, at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . For instance, the dedicated MAC-CE may indicate at least a portion of the periodicity and offset information 806 as a selected option from one of multiple previously RRC-configured choices, or the dedicated MAC-CE may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) . Similarly, the dedicated MAC-CE may update at least a portion of the periodicity and offset information 806 that has been previously RRC-configured or even previously MAC-CE indicated (or subsequently updated) . For instance, if the RRC configuration 812 indicates a first one of three choices for second periodicity 624 or periodicity 704 (P_2, CPR) , the MAC-CE 822 may select a second one of these three choices for second periodicity 624 or periodicity 704 (P_2, CPR) , and then another MAC-CE 822 may later update to a third one of these three choices for second periodicity 624 or periodicity 704 (P_2, CPR) . In response to receiving the dedicated MAC-CE, the UE may apply the indicated or updated periodicity and offset information 806 after a duration of time has elapsed (such as 3 ms) following an acknowledgment (ACK) to the base station of reception of the MAC-CE. For instance, after receiving MAC-CE 822 indicating periodicity and offset information 806, the UE may begin to apply this indicated or updated information to its reception of reference signal 808 and transmission of CSI report 810 after 3 ms following transmission of an ACK to the base station.
In a third aspect, the periodicity and offset information 806 may be carried via an associated report configuration information setting 824 for CSI with respect to aperiodic CSI reporting (such as in configuration CSI-AssociatedReportConfigInfo or a similar configuration of another name) . In one example where the periodicity and offset information 806 is carried via associated report configuration information setting 824, the indicated periodicity and offset information in the associated report configuration information setting 824 may be, for example, a selected option out of multiple, RRC-configured options for periodicity and offset information 806 that has been indicated in RRC configuration 812 according to one of the aforementioned examples related to the first aspect (but this time for an aperiodic CSI report) . For example, CSI report setting 814 that configures CSI report 810 to be aperiodic may further indicate multiple options or choices for first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and the associated report configuration information setting 824 may select one of these multiple choices to be applied for the communication of reference signal 808 and CSI report 810. Alternatively, rather than indicating the periodicity and offset information 806 as a selected option from one of multiple previously RRC-configured choices, the associated report configuration information setting 824 may directly indicate the periodicity and offset information 806. For example, the associated report configuration information setting 824 may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) . This indication in associated report configuration information setting 824 of at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) may be performed in a similar manner as described in any of the foregoing examples where such information is carried in RRC configuration 812. However, since in this particular aspect CSI report 810 is aperiodic, here the UE may expect to receive only a single group of CMR set bursts (such as in measurement cycles 606 only) , and predict or report regarding only a single group of prediction or reporting occasions following the single group of CMR set bursts (such as in prediction cycles 610 only) , rather than multiple groups as currently illustrated.
In a fourth aspect, the periodicity and offset information 806 may be carried via one or more dedicated fields of a DCI 826 for this purpose. This DCI may indicate, or update a previous indication of, at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . In one example where the periodicity and offset information 806 is carried via DCI 826, the indicated periodicity and offset information in the DCI 826 may be, for example, a selected option out of multiple, RRC-configured options that has been indicated in RRC configuration 812 for an aperiodic CSI report according to one of the aforementioned examples related to the first aspect. Alternatively or additionally, the indicated periodicity and offset information in the DCI 826 may be, for example, a selected option out of multiple MAC-CE indicated options for periodicity and offset information 806 that has been indicated or updated in MAC-CE 822. For example, CSI report setting 814 that configures CSI report 810 to be aperiodic, or MAC-CE 822 activating CSI report 810 or its associated CMR or CPR sets, may further indicate multiple options or choices for first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and the DCI 826 may select one of these multiple choices to be applied for the communication of reference signal 808 and CSI report 810. Alternatively, rather than indicating the periodicity and offset information 806 as a selected option from one of multiple previously RRC-configured or MAC-CE indicated (or updated) choices, the DCI 826 may directly indicate the periodicity and offset information 806. For example, the DCI 826 may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) or MAC-CE indicated (if MAC-CE indicated at all) . This indication in DCI 826 of at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) may be performed in a similar manner as described in any of the foregoing examples where such information is carried in RRC configuration 812 or MAC-CE 822.
In the examples described above with respect to FIGs. 6 –8, the CMR burst sets in the measurement cycles 606, 608 associated with CSI report setting 602, 814 may include a same pattern of transmission beams. For instance, referring to FIG. 6, the CMR set including CMRs within corresponding time instances of measurement cycles 1, 2, 3, and 4 may be associated with a same beam pattern, such that the UE may receive CMRs in one beam in the first time instance or occasion during each of these measurement cycles 606, 608, in another beam in the second time instance or occasion during each of these measurement cycles 606, 608, in a further beam in the third time instance or occasion during each of these measurement cycles 606, 608 and so forth. The beams associated with each time instance of a single measurement cycle may be different or the same, but may nevertheless repeat in the same pattern across multiple measurement cycles.
While this arrangement may provide simplicity in CMR set configuration across multiple measurement cycles, in some cases an obstacle or other factor that changes over time may result in a beam blockage in one or more of these beams during respective measurement cycles. To address this possibility, the base station may alternatively configure, and the UE may alternatively identify from the configuration, the CMR burst sets in measurement cycles 606 or between measurement cycles 606, 608 to include different patterns of transmission beams (rather than a same pattern of transmission beams as previously described) . In one example, referring to FIG. 6, the CMR set including CMRs within corresponding time instances of measurement cycles 1 and 2 (and correspondingly in measurement cycles 3 and 4) may be associated with different beam patterns. For instance, respective consecutive groups of time instances including CMRs (consecutive CMR burst sets) may have different beam patterns. In another example, the CMR set including CMRs within corresponding time instances of measurement cycles 606 (including measurement cycles 1 and 2) and measurement cycles 608 (including measurement cycles 3 and 4) may be associated with different beam patterns. For instance, respective inconsecutive groups of time instances including CMRs (inconsecutive CMR burst sets separated by prediction cycles 610) may have different beam patterns. The foregoing examples may also be combined such that consecutive and inconsecutive CMR burst sets have different beam patterns with respect to each other. Such configuration examples are illustrated and described below with respect to FIG. 9, and may be indicated via RRC configuration 812, MAC-CE 822, associated report configuration information setting 824, or DCI 826 in a same or similar manner as the other configuration examples described with respect to FIG. 8.
FIG. 9 illustrates an example 900 of a CMR set 902 (such as CMR set 503) associated with multi-shot or flexible measurement cycles 904, 906 (e.g., for Set B beams) . With reference to FIGs. 5-7, measurement cycles 904 may correspond to measurement cycles 502, 606, and measurement cycles 906 may correspond to measurement cycles 506, 608. The example of FIG. 9 illustrates different configuration possibilities of CMR set 902 including CMRs within corresponding time instances of measurement cycles 904, 906 that are associated with different beam patterns. For instance, in first configuration option 908, CMR set 902 including CMRs within corresponding time instances of measurement cycles 904 (and correspondingly in measurement cycles 906) may be associated with different beam patterns within consecutive CMR set bursts 910. For example, measurement cycle 1 may include one pattern of beams where the first time instance includes CMRs carried on beam 911a, the second time instance includes CMRs carried on beam 911b, the third time instance includes CMRs carried on beam 911c, and the fourth time instance includes CMRs carried on beam 911d, while measurement cycle 2 may include a different beam pattern where the first time instance includes CMRs carried on beam 911e, the second time instance includes CMRs carried on beam 911f, the third time instance includes CMRs carried on beam 911g, and the fourth time instance includes CMRs carried on beam 911h. These different beam patterns for measurement cycles 1 and 2 (beams 911a –d and beams 911e –h respectively) may repeat in measurement cycles 3 and 4, and similarly thereafter. Alternatively, in second configuration option 912, CMR set 902 including CMRs within corresponding time instances of measurement cycles 904 and 906 may be associated with different beam patterns across inconsecutive CMR set bursts 914. For example, measurement cycles 1 and 2 may include one pattern of beams where their first time instances include CMRs carried on beam 915a, their second time instances include CMRs carried on beam 915b, their third time instances include CMRs carried on beam 915c, and their fourth time instances include CMRs carried on beam 915d, while measurement cycles 3 and 4 may include a different beam pattern where their first time instances include CMRs carried on beam 915e, their second time instances include CMRs carried on beam 915f, their third time instances include CMRs carried on beam 915g, and their fourth time instances include CMRs carried on beam 915h. These different beam patterns between measurement cycles 1 and 2 (beams 915a –d) and measurement cycles 3 and 4 (beams 915e –h respectively) may repeat or alternate across subsequent measurement cycles accordingly.
Referring back to the foregoing Figures, the base station may indicate the first configuration option 908, second configuration option 912, or combination of these configuration options that are applied to CMR set 902 in RRC configuration 812, MAC-CE 822, associated report configuration information setting 824, or DCI 826 according to any of the various examples described with respect to those aspects. From the received configuration and periodicity and offset information 806, the UE may identify that the CMR set 503, 902 associated with CSI report setting 602, 814 includes different patterns of transmission beams as well as the time instances or measurement cycles 606, 608, 904, 906 associated with those transmission beams. For instance, the base station may configure, and the UE may identify from the configuration, different groups of transmission beam shapes or directions, or different spatial reception ( “Type D” ) quasi-colocation (QCL) parameters, for the CMRs in CMR set 902. In one example, this different beam pattern information may be configured with respect to different N_CMR CMR set bursts within a certain group of CMR set bursts, such as using different beam shapes, directions, or Type D QCL parameters between consecutive CMR set bursts 910 corresponding to measurement cycles 1 and 2 according to the first configuration option 908. In another example, this different beam pattern information may be configured with respect to different groups of CMR set bursts, such as using different beam shapes, directions, or Type D QCL parameters between inconsecutive CMR set bursts 914 corresponding to measurement cycles 1/2 and 3/4 according to the second configuration option 912. The base station may explicitly indicate such information for different CMRs with respect to different CMR set bursts (as in configuration option 1) or CMR set burst groups (as in configuration option 2) , including one or more of the time domain cycling patterns of transmission beam shapes and directions or the time domain cycling patterns of Type D QCL parameters, using RRC configuration 812, MAC-CE 822, associated report configuration information setting 824, or DCI 826 in accordance with any of the various examples previously described with respect to these aspects.
Alternatively, if the CSI report setting 814 is associated with multiple CMR sets or multiple CPR sets rather than a single CMR or CPR set such as previously described, then the base station may configure, and the UE may directly identify from the configuration, the different transmission beam shapes or directions or the different spatial Rx QCL parameters from the different CMR sets associated with the CSI report setting. For instance, if multiple CMR sets 503, 902 are associated with CSI report setting 602, 814 such that different measurement cycles 904, 906 correspond to different CMR sets, then the base station may configure the different CMR sets to include different transmission beam information with respect to different CMR set bursts (as in configuration option 1) or CMR set burst groups (as in configuration option 2) , and the UE may identify the information from the different CMR sets accordingly.
FIG. 10 is a flowchart 1000 of an example method of wireless communication. The method may be performed by a UE (e.g., the UE 104, 350, 802; the apparatus 1202) . Optional aspects are illustrated in dashed lines. The method allows a UE to identify periodicity and offset information for flexible measurement and prediction cycles used in time domain beam prediction.
At block 1002, the UE receives periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain. For example, block 1002 may be performed by periodicity and offset information component 1240. For instance, referring to the foregoing Figures, UE 104, 350, 802 may receive periodicity and offset information 604, 702, 806 associated with CSI report setting 602, 814. The CSI report setting may be associated with CMRs (the first set of reference signal resources for channel measurement) , such as with CMRs of CMR set (s) 503, 902 in CMR set setting 818 or some other configuration, and the CSI report setting may be associated with CPRs (the second set of reference signal resources for beam prediction in a temporal domain) , such as with CPRs of CPR set (s) 505 in CPR set setting 820 or some other configuration.
The periodicity and offset information indicates at least one of: at block 1004, a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or at block 1006, a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. For instance, referring to the foregoing Figures, periodicity and offset information 604, 702, 806 may indicate first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , and second measurement periodicity 618 (P_2, CMR) , periodicity and offset information 604, 702, 806 may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , or periodicity and offset information 604, 702, 806 may indicate a combination of the foregoing. First measurement periodicity 614 (P_1, CMR) may be between first consecutive groups of time instances associated with CMRs of CMR set (s) 503, 902, such as between consecutive CMR set bursts 910 or between measurement cycles 1 and 2 in the examples of FIGs. 6 or 9. Quantity 616 (N_CMR) may indicate a number of the first consecutive groups of time instances, such as N_CMR = 2 groups of four consecutive time instances each in the example of FIG. 6. Second measurement periodicity 618 (P_2, CMR) may be between first inconsecutive groups of time instances associated with CMRs of CMR set (s) 503, 902, such as between inconsecutive CMR set bursts 914 or between measurement cycles 1 and 3 in the examples of FIGs. 6 or 9. First periodicity 620 (P_1, CPR) may be between second consecutive groups of time instances associated with CPRs of CPR set (s) 505, such as between consecutive CPR set bursts or between predict and report cycles 1 and 2 in the example of FIG. 6. Quantity 622 (N_CPR) may indicate a number of the second consecutive groups of time instances, such as N_CPR = 3 groups of at least three consecutive time instances each in the example of FIG. 6. Second periodicity 624 or periodicity 704 (P_2, CPR) may be between second inconsecutive groups of time instances associated with CPRs of CPR set (s) 505, such as between inconsecutive CPR set bursts or between predict and report cycles 1 and 4 in the example of FIG. 6 or between CSI reporting occasions 710, 712 or CSI reporting occasions 714, 716 in the example of FIG. 7.
At block 1008, the UE transmits a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information. For example, block 1008 may be performed by CSI report component 1242. For instance, referring to the foregoing Figures, UE 802 may transmit CSI report 810 including CSI associated with at least one of the CMR set(s) 503, 902 or the CPR set 505 associated with periodicity and offset information 604, 702, 806. For instance, the CSI report 810 may include CSI which the UE 802 measures from the reference signal 808 carried in the CMR set (s) 503, 902 associated with Set B beams in the measurement cycles 502, 506, 606, 608, 904, 906 identified from the periodicity and offset information 604, 702, 806, CSI which the UE 802 predicts for example using AI/ML for CPRs associated with predicted beams (Set A beams) within the CPR set (s) 505 periodically configured within the prediction cycles 504, 508, 610, 612, 706, 708 identified from the periodicity and offset information 604, 702, 806, or CSI which is to include a combination of the foregoing CSI.
In some aspects, the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances. Similarly, the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances. For instance, referring to the foregoing Figures, the time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to inconsecutive CMR set bursts 914 or measurement cycles 1/2 and 3/4 in the examples of FIGs. 6 or 9 may be considered the first inconsecutive groups of time instances. These first inconsecutive groups of time instances may include multiple consecutive groups of time instances, including those time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to consecutive CMR set bursts 910 or measurement cycles 1 and 2 in the examples of FIGs. 6 or 9 (the first consecutive groups of time instances) , and those time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to measurement cycles 3 and 4 in the example of FIG. 6 (the third consecutive groups of time instances) . These latter time instances (the third consecutive groups of time instances) are separated from the former time instances (the first consecutive groups of time instances) by the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to predict and report cycles 1, 2, and 3 (the second consecutive groups of time instances) . Moreover, the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to inconsecutive CPR set bursts or predict and report cycles 1/2/3 and 4/5/6 in the example of FIG. 6 may be considered the second inconsecutive groups of time instances. These second inconsecutive groups of time instances may include multiple consecutive groups of time instances, including those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 1, 2, and 3 in the example of FIG. 6 (the second consecutive groups of time instances) , and those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 4, 5, and 6 in the example of FIG. 6 (the fourth consecutive groups of time instances) . These latter time instances (the fourth consecutive groups of time instances) are separated from the former time instances (the second consecutive groups of time instances) by the time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to measurement cycles 3 and 4 (the third consecutive groups of time instances) .
In some aspects, the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances. For instance, referring to the foregoing Figures, the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 1, 2, and 3 in the example of FIG. 6 (the second consecutive groups of time instances) occur in time after those time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to consecutive CMR set bursts 910 or measurement cycles 1 and 2 in the examples of FIGs. 6 or 9 (the first consecutive groups of time instances) . In turn, the time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to measurement cycles 3 and 4 in the example of FIG. 6 (the third consecutive groups of time instances) occur in time after the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 1, 2, and 3 in the example of FIG. 6 (the second consecutive groups of time instances) . Similarly, the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 4, 5, and 6 in the example of FIG. 6 (the fourth consecutive groups of time instances) occur in time after the time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to measurement cycles 3 and 4 in the example of FIG. 6 (the third consecutive groups of time instances) . This arrangement leads to the alternating pattern of consecutive CMR set bursts and consecutive CPR set bursts illustrated in FIG. 6.
In some aspects, the second measurement periodicity is equal to the second periodicity. For instance, referring to FIG. 6, periodicity and offset information 604 may be configured such that second measurement periodicity 618 (P_2, CMR) and second periodicity 624 (P_2, CPR) are equal.
In some aspects, the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances. For instance, referring to the foregoing Figures, the time instances associated with CMRs of CMR set(s) 503, 902 and corresponding for example to inconsecutive CMR set bursts 914 or measurement cycles 1/2 and 3/4 in the examples of FIGs. 6 or 9 may be considered the first inconsecutive groups of time instances. These first inconsecutive groups of time instances may include multiple consecutive groups of time instances, including those time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to consecutive CMR set bursts 910 or measurement cycles 1 and 2 in the examples of FIGs. 6 or 9 (the first consecutive groups of time instances) , and those time instances associated with CMRs of CMR set (s) 503, 902 and corresponding for example to measurement cycles 3 and 4 in the example of FIG. 6 (the third consecutive groups of time instances) . Moreover, as illustrated and described with respect to FIG. 6, second measurement periodicity 618 (P_2, CMR) may be the difference in time between the starting symbol of the initial time instance of measurement cycle 1 (within the first consecutive groups of time instances corresponding to measurement cycles 1 and 2 in FIG. 6) and the starting symbol of the initial time instance of measurement cycle 3 (within the third consecutive groups of time instances corresponding to measurement cycles 3 and 4 in FIG. 6) . The starting symbol of each time instance may be one of the OFDM symbols illustrated in FIGs. 2A-2D, for example.
In some aspects, the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances. For instance, referring to the foregoing Figures, the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to inconsecutive CPR set bursts or predict and report cycles 1/2/3 and 4/5/6 in the example of FIG. 6 may be considered the second inconsecutive groups of time instances. These second inconsecutive groups of time instances may include multiple consecutive groups of time instances, including those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 1, 2, and 3 in the example of FIG. 6 (the second consecutive groups of time instances) , and those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 4, 5, and 6 in the example of FIG. 6 (the fourth consecutive groups of time instances) . Moreover, as illustrated and described with respect to FIG. 6, second periodicity 624 (P_2, CPR) may be the difference in time between the initial time instance of predict and report cycle 1 (within the second consecutive groups of time instances corresponding to predict and report cycles 1, 2, and 3 in FIG. 6) and the initial time instance of predict and report cycle 4 (within the fourth consecutive groups of time instances corresponding to predict and report cycles 4, 5, and 6 in FIG. 6) .
In some aspects, the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances. For instance, referring to the foregoing Figures, the time instances associated with CPRs of CPR set (s) 505 and corresponding for example to inconsecutive CPR set bursts or predict and report cycles 1/2/3 and 4/5/6 in the example of FIG. 6 may be considered the second inconsecutive groups of time instances. These second inconsecutive groups of time instances may include multiple consecutive groups of time instances, including those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 1, 2, and 3 in the example of FIG. 6 (the second consecutive groups of time instances) , and those time instances associated with CPRs of CPR set (s) 505 and corresponding for example to consecutive CPR set bursts or predict and report cycles 4, 5, and 6 in the example of FIG. 6 (the fourth consecutive groups of time instances) . Moreover, as illustrated and described with respect to FIG. 7, periodicity 704 (P_2, CPR) may be the difference in time between the slots carrying single CSI reporting occasions 710 and 712, where single CSI reporting occasion 710 corresponds to the first initial time instance for CSI reporting in connection with the second consecutive groups of time instances corresponding to predict and report cycles 1, 2, and 3, and where single CSI reporting occasion 712 corresponds to the second initial time instance for CSI reporting in connection with the fourth consecutive groups of time instances corresponding to predict and report cycles 4, 5, and 6. Alternatively, as also illustrated and described with respect to FIG. 7, periodicity 704 (P_2, CPR) may be the difference in time between the slots carrying CSI reporting occasions 714, 716 configured to occur prior to or after their associated prediction cycles 706, 708, where the time domain-leading CSI reporting occasion 714 corresponds to the first initial time instance for CSI reporting in connection with the second consecutive groups of time instances corresponding to predict and report cycles 1, 2, and 3, and where the time domain-leading CSI reporting occasion 716 corresponds to the second initial time instance for CSI reporting in connection with the fourth consecutive groups of time instances corresponding to predict and report cycles 4, 5, and 6.
In some aspects, at least a portion of the periodicity and offset information is indicated in a RRC configuration. For instance, referring to the foregoing Figures, the periodicity and offset information 604, 702, 806 may be carried via an RRC configuration 812. For example, the periodicity and offset information 604, 702, 806 may be carried at least in part via CSI report setting 814 or configuration (such as CSI report setting 602 (CSI-ReportConfig or a similar configuration of another name) , CSI resource setting 816 (such as CSI-ResourceConfig or a similar setting of another name) , CMR set setting 818 or configuration (such as a CSI-RS resource set configuration, for example NZP-CSI-RS-ResourceSet or a similar setting of another name) , CPR set setting 820 or configuration (which may be configured similarly as CMR set setting 818) , or a combination of the foregoing configurations or settings. Thus, RRC configuration 812 may be, include, or otherwise be associated with one or more of the foregoing configurations or settings.
In some aspects, the RRC configuration includes the CSI report setting, and the CSI report setting indicates the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the periodicity and offset information 806 may be carried at least in part via CSI report setting 814 (the RRC configuration 812 in this example, or a setting in RRC configuration 812) . In one example, the CSI report setting 814 may directly indicate the periodicity and offset information 806. For instance, the CSI report setting 814 itself (as opposed to via the CSI resource setting 816, CMR set setting 818, or CPR set setting 820) may expressly indicate the values of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . In another example, the CSI report setting 814 may configure the reporting occasions of predicted channel characteristics, such as prediction cycles 504, 508, 610, 612, 706, 708, by indicating a portion of the periodicity and offset information 806. For instance, the CSI report setting 814 itself may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with the remainder of the periodicity and offset information 806 being indicated in the same setting or elsewhere. In another example, the CMR set setting 818 associated with the CSI report setting 814 may indicate a portion of the periodicity and offset information 806 for CMRs, and the CSI report setting 814 itself may indicate a remainder of the portion of the periodicity and offset information 806 for CMRs. For instance, CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , while CSI report setting 814 may indicate quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may indicate a portion of the periodicity and offset information 806 for CPRs, and the CSI report setting 814 itself may indicate a remainder of the portion of the periodicity and offset information 806 for CPRs. For instance, CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , while CSI report setting 814 may indicate quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere.
In some aspects, the RRC configuration includes a CSI resource setting associated with the CSI report setting, and the CSI resource setting indicates the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the periodicity and offset information 806 may be carried at least in part via the CSI resource setting 816 (the RRC configuration 812 in this example, or a setting in RRC configuration 812) . In one example, the CMR set setting 818 associated with the CSI report setting 814 may indicate a portion of the periodicity and offset information 806 for CMRs, and the CSI resource setting 816 associated with the CMR set setting 818 may itself indicate a remainder of the portion of the periodicity and offset information 806 for CMRs. For instance, CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , while CSI resource setting 816 may indicate quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may indicate a portion of the periodicity and offset information 806 for CPRs, and the CSI resource setting 816 associated with the CPR set setting 820 may itself indicate a remainder of the portion of the periodicity and offset information 806 for CPRs. For instance, CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , while CSI resource setting 816 may indicate quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere.
In some aspects, the RRC configuration includes at least one of the first set of reference signal resources or the second set of reference signal resources associated with the CSI report setting. For instance, referring to the foregoing Figures, the periodicity and offset information 806 may be carried at least in part via the CMR set setting 818 or CPR set setting 820 (the RRC configuration 812 in this example, or a setting in RRC configuration 812) . In one example, the CMR set setting 818 may itself indicate a portion of the periodicity and offset information 806 for CMRs, without relying on the CSI resource setting 816 to directly indicate the remaining CMR information. For instance, the RRC configuration 812 carrying CMR set setting 818 may indicate first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , and second measurement periodicity 618 (P_2, CMR) , with a remainder of the periodicity and offset information 806 for CPRs being indicated in the same setting (s) or elsewhere. In a further example, the CPR set setting 820 may itself indicate a portion of the periodicity and offset information 806 for CPRs, without relying on the CSI resource setting 816 to directly indicate the remaining CPR information. For instance, the RRC configuration 812 carrying CPR set setting 820 may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , with a remainder of the periodicity and offset information 806 for CMRs being indicated in the same setting (s) or elsewhere.
In some aspects, the RRC configuration includes the CSI report setting, and the CSI report setting is associated with at least one of: a first plurality of sets of reference signal resources for channel measurement including the first set of reference signal resources, or a second plurality of sets of reference signal resources for beam prediction in the temporal domain including the second set of reference signal resources. For instance, referring to the foregoing Figures, the periodicity and offset information 806 may be carried at least in part via CSI report setting 814 (the RRC configuration 812 in this example, or a setting in RRC configuration 812) , but here, the CSI report setting 814 may be associated with multiple CMR sets or multiple CPR sets rather than a single CMR or CPR set. For instance, multiple CMR sets 503 (in respective CMR set settings 818) , multiple CPR sets 505 (in respective CPR set settings 820) , or both may be associated with CSI report setting 602, where each of the respective CMR sets 503 or CPR sets 505 is associated with a single periodicity, and thus the UE may implicitly identify the periodicity and offset information 806 based on these multiple CMR or CPR sets. For example, referring to FIG. 6, measurement cycles 1 and 3 may be configured in one CMR set associated with the CSI report setting to have one periodicity and offset while measurement cycles 2 and 4 may be configured in another CMR set associated with the same CSI report setting to have a same periodicity but different offset. Similarly, prediction cycles 1 and 4 may be configured in one CPR set associated with the CSI report setting to have one periodicity and offset while prediction cycles 2 and 5 may be configured in another CPR set associated with the same CSI report setting to have a same periodicity but different offset.
In some aspects, at least a portion of the periodicity and offset information is indicated in a MAC-CE. For instance, referring to the foregoing Figures, the periodicity and offset information 604, 702, 806 may be carried at least in part via MAC-CE 822.
In some aspects, the MAC-CE is configured to activate a semi-persistently scheduled CSI report or a semi-persistently scheduled resource set including the first set of reference signal resources or the second set of reference signal resources. For instance, referring to the foregoing Figures, the MAC-CE 822 may be one configured to activate a semi-persistently scheduled CSI report or a semi-persistently scheduled CMR set or CPR set which are configured in or in association with CSI report setting 814, and may indicate at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) . The indicated periodicity and offset information in the MAC-CE 822 may be, for example, a selected option out of multiple, RRC-configured options for periodicity and offset information 806 that has been indicated in RRC configuration 812 according to one of the aforementioned examples (where the periodicity and offset information 806 is carried in RRC configuration 812) . Alternatively, rather than indicating the periodicity and offset information 806 as a selected option from one of multiple previously RRC-configured choices, the MAC-CE 822 may directly indicate the periodicity and offset information 806.
In some aspects, the MAC-CE is dedicated for indicating the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the MAC-CE 822 may be a dedicated MAC-CE for this purpose (rather than one configured to also activate a semi-persistently scheduled CSI report, CMR set, CPR set for example) . For example, the dedicated MAC-CE may have a different LCID than a MAC-CE which activates a semi-persistently scheduled CSI report or a semi-persistently scheduled CMR set or CPR set. Such dedicated MAC-CE may indicate, or update a previous indication of, at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) .
In some aspects, at least a portion of the periodicity and offset information is indicated in associated report configuration information for the CSI report, the CSI report being an aperiodic CSI report. For instance, referring to the foregoing Figures, the periodicity and offset information 604, 702, 806 may be carried via associated report configuration information setting 824 for CSI with respect to aperiodic CSI reporting of CSI report 810 (such as in configuration CSI-AssociatedReportConfigInfo or a similar configuration of another name) .
In some aspects, the associated report configuration information selects one of multiple options indicated in an RRC configuration for the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the periodicity and offset information 806 indicated at least in part in the associated report configuration information setting 824 may be, for example, a selected option out of multiple, RRC-configured options for periodicity and offset information 806 that has been indicated in RRC configuration 812 according to one of the aforementioned examples related to the first aspect (but this time for an aperiodic CSI report) . For example, CSI report setting 814 that configures CSI report 810 to be aperiodic may further indicate multiple options or choices for first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and the associated report configuration information setting 824 may select one of these multiple choices to be applied for the communication of reference signal 808 and CSI report 810.
In some aspects, the associated report configuration information directly indicates the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the associated report configuration information setting 824 may directly indicate at least a portion of the periodicity and offset information 806. For example, the associated report configuration information setting 824 may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) . This indication in associated report configuration information setting 824 of at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) may be performed in a similar manner as described in any of the foregoing examples where such information is carried in RRC configuration 812.
In some aspects, at least a portion of the periodicity and offset information is indicated in DCI. For instance, referring to the foregoing Figures, the periodicity and offset information 604, 702, 806 may be carried at least in part via one or more dedicated fields of a DCI 826 for this purpose. This DCI may indicate, or update a previous indication of, at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) .
In some aspects, the DCI selects one of multiple options indicated in an RRC configuration or a MAC-CE for the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the indicated periodicity and offset information in the DCI 826 may be, for example, a selected option out of multiple, RRC-configured options that has been indicated in RRC configuration 812 for an aperiodic CSI report according to one of the aforementioned examples related to the first aspect. Alternatively or additionally, the indicated periodicity and offset information in the DCI 826 may be, for example, a selected option out of multiple MAC-CE indicated options for periodicity and offset information 806 that has been indicated or updated in MAC-CE 822. For example, CSI report setting 814 that configures CSI report 810 to be aperiodic, or MAC-CE 822 activating CSI report 810 or its associated CMR or CPR sets, may further indicate multiple options or choices for first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , and the DCI 826 may select one of these multiple choices to be applied for the communication of reference signal 808 and CSI report 810.
In some aspects, the DCI directly indicates the at least the portion of the periodicity and offset information. For instance, referring to the foregoing Figures, the DCI 826 may directly indicate the periodicity and offset information 806. For example, the DCI 826 may indicate a different value (or any value) for any of the periodicity and offset information 806 than that which is RRC-configured (if RRC-configured at all) or MAC-CE indicated (if MAC-CE indicated at all) . This indication in DCI 826 of at least one of first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , second measurement periodicity 618 (P_2, CMR) , first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) may be performed in a similar manner as described in any of the foregoing examples where such information is carried in RRC configuration 812 or MAC-CE 822.
In some aspects, one group of time instances in the first consecutive groups of time instances is associated with a different transmission beam pattern, a different spatial Rx parameter indication for QCL, or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first consecutive groups of time instances. For instance, referring to the foregoing Figures, the base station may configure, and the UE may identify from the configuration, different groups of transmission beam shapes or directions, or different spatial reception ( “Type D” ) QCL parameters, for the CMRs in CMR set 902, where this different beam pattern information may be configured with respect to different N_CMR CMR set bursts within a certain group of CMR set bursts, such as using different beam shapes, directions, or Type D QCL parameters between consecutive CMR set bursts 910 corresponding to measurement cycles 1 and 2 according to the first configuration option 908. Alternatively, if multiple CMR sets 503, 902 are associated with CSI report setting 602, 814 such that different measurement cycles 904, 906 correspond to different CMR sets, then the base station may configure the different CMR sets to include different transmission beam information with respect to different CMR set bursts (as in configuration option 1) .
In some aspects, one group of time instances in the first inconsecutive groups of time instances is associated with a different transmission beam pattern, a different spatial Rx parameter indication for QCL, or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first inconsecutive groups of time instances. For instance, referring to the foregoing Figures, the base station may configure, and the UE may identify from the configuration, different groups of transmission beam shapes or directions, or different spatial reception ( “Type D” ) QCL parameters, for the CMRs in CMR set 902, where this different beam pattern information may be configured with respect to different groups of CMR set bursts, such as using different beam shapes, directions, or Type D QCL parameters between inconsecutive CMR set bursts 914 corresponding to measurement cycles 1/2 and 3/4 according to the second configuration option 912. Alternatively, if multiple CMR sets 503, 902 are associated with CSI report setting 602, 814 such that different measurement cycles 904, 906 correspond to different CMR sets, then the base station may configure the different CMR sets to include different transmission beam information with respect to different CMR set burst groups (as in configuration option 2) .
FIG. 11 is a flowchart 1100 of a method of wireless communication. The method may be performed by a network entity (e.g., the base station 102/180, 181, 310, 804, the apparatus 1302) . Optional aspects are illustrated in dashed lines. The method allows a network entity to configure periodicity and offset information for flexible measurement and prediction cycles used in time domain beam prediction.
At block 1102, the network entity transmits periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain. For example, block 1102 may be performed by periodicity and offset information component 1340. For instance, referring to the foregoing Figures, base station 102/180, 181, 310, 804 may transmit periodicity and offset information 604, 702, 806 associated with CSI report setting 602, 814. The CSI report setting may be associated with CMRs (the first set of reference signal resources for channel measurement) , such as with CMRs of CMR set (s) 503, 902 in CMR set setting 818 or some other configuration, and the CSI report setting may be associated with CPRs (the second set of reference signal resources for beam prediction in a temporal domain) , such as with CPRs of CPR set (s) 505 in CPR set setting 820 or some other configuration.
The periodicity and offset information indicates at least one of: at block 1104, a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or at block 1106, a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. For instance, referring to the foregoing Figures, periodicity and offset information 604, 702, 806 may indicate first measurement periodicity 614 (P_1, CMR) , quantity 616 (N_CMR) , and second measurement periodicity 618 (P_2, CMR) , periodicity and offset information 604, 702, 806 may indicate first periodicity 620 (P_1, CPR) , quantity 622 (N_CPR) , and second periodicity 624 or periodicity 704 (P_2, CPR) , or periodicity and offset information 604, 702, 806 may indicate a combination of the foregoing. First measurement periodicity 614 (P_1, CMR) may be between first consecutive groups of time instances associated with CMRs of CMR set (s) 503, 902, such as between consecutive CMR set bursts 910 or between measurement cycles 1 and 2 in the examples of FIGs. 6 or 9. Quantity 616 (N_CMR) may indicate a number of the first consecutive groups of time instances, such as N_CMR = 2 groups of four consecutive time instances each in the example of FIG. 6. Second measurement periodicity 618 (P_2, CMR) may be between first inconsecutive groups of time instances associated with CMRs of CMR set (s) 503, 902, such as between inconsecutive CMR set bursts 914 or between measurement cycles 1 and 3 in the examples of FIGs. 6 or 9. First periodicity 620 (P_1, CPR) may be between second consecutive groups of time instances associated with CPRs of CPR set (s) 505, such as between consecutive CPR set bursts or between predict and report cycles 1 and 2 in the example of FIG. 6. Quantity 622 (N_CPR) may indicate a number of the second consecutive groups of time instances, such as N_CPR = 3 groups of at least three consecutive time instances each in the example of FIG. 6. Second periodicity 624 or periodicity 704 (P_2, CPR) may be between second inconsecutive groups of time instances associated with CPRs of CPR set (s) 505, such as between inconsecutive CPR set bursts or between predict and report cycles 1 and 4 in the example of FIG. 6 or between CSI reporting occasions 710, 712 or CSI reporting occasions 714, 716 in the example of FIG. 7.
At block 1108, the network entity receives a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information. For example, block 1108 may be performed by CSI report component 1342. For instance, referring to the foregoing Figures, base station 804 may receive CSI report 810 including CSI associated with at least one of the CMR set (s) 503, 902 or the CPR set 505 associated with periodicity and offset information 604, 702, 806. For instance, the CSI report 810 may include CSI which the UE 802 measures from the reference signal 808 carried in the CMR set (s) 503, 902 associated with Set B beams in the measurement cycles 502, 506, 606, 608, 904, 906 identified from the periodicity and offset information 604, 702, 806, CSI which the UE 802 predicts for example using AI/ML for CPRs associated with predicted beams (Set A beams) within the CPR set (s) 505 periodically configured within the prediction cycles 504, 508, 610, 612, 706, 708 identified from the periodicity and offset information 604, 702, 806, or CSI which is to include a combination of the foregoing CSI.
In some aspects, the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances; the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances; the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances; and the second measurement periodicity is equal to the second periodicity.
In some aspects, the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances; and the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between one of: a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances; or a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances.
In some aspects, at least a portion of the periodicity and offset information is indicated in a RRC configuration, a MAC-CE, associated report configuration information for an aperiodic CSI report, or DCI.
In some aspects, in a plurality of groups of time instances selected from the first consecutive groups of time instances or the first inconsecutive groups of time instances, one of the groups of time instances is associated with a different transmission beam pattern, a different spatial Rx parameter indication for QCL, or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another one of the groups of time instances.
FIG. 12 is a diagram 1200 illustrating an example of a hardware implementation for an apparatus 1202. The apparatus 1202 is a UE and includes a cellular baseband processor 1204 (also referred to as a modem) coupled to a cellular RF transceiver 1222 and one or more subscriber identity modules (SIM) cards 1220, an application processor 1206 coupled to a secure digital (SD) card 1208 and a screen 1210, a Bluetooth module 1212, a wireless local area network (WLAN) module 1214, a Global Positioning System (GPS) module 1216, and a power supply 1218. The cellular baseband processor 1204 communicates through the cellular RF transceiver 1222 with the UE 104 and/or BS 102/180. The cellular baseband processor 1204 may include a computer-readable medium /memory. The computer-readable medium /memory may be non-transitory. The cellular baseband processor 1204 is responsible for general processing, including the execution of software stored on the computer-readable medium /memory. The software, when executed by the cellular baseband processor 1204, causes the cellular baseband processor 1204 to perform the various functions described supra. The computer-readable medium /memory may also be used for storing data that is manipulated by the cellular baseband processor 1204 when executing software. The cellular baseband processor 1204 further includes a reception component 1230, a communication manager 1232, and a transmission component 1234. The communication manager 1232 includes the one or more illustrated components. The components within the communication manager 1232 may be stored in the computer-readable medium /memory and/or configured as hardware within the cellular baseband processor 1204. The cellular baseband processor 1204 may be a component of the UE 350 and may include the memory 360 and/or at least one of the TX processor 368, the RX processor 356, and the controller/processor 359. In one configuration, the apparatus 1202 may be a modem chip and include just the baseband processor 1204, and in another configuration, the apparatus 1202 may be the entire UE (e.g., see 350 of FIG. 3) and include the aforediscussed additional modules of the apparatus 1202.
The communication manager 1232 includes a periodicity and offset information component 1240 that is configured to receive periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources, e.g., as described in connection with 1002, 1004, and 1006. The communication manager 1232 further includes a CSI report component 1242 that is configured to transmit a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information, e.g., as described in connection with 1008.
The apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned flowcharts of FIG. 10. As such, each block in the aforementioned flowcharts of FIG. 10 may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
In one configuration, the apparatus 1202, and in particular the cellular baseband processor 1204, includes means for receiving periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. The apparatus 1202, and in particular the cellular baseband processor 1204, further includes means for transmitting a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
The aforementioned means may be one or more of the aforementioned components of the apparatus 1202 configured to perform the functions recited by the aforementioned means. As described supra, the apparatus 1202 may include the TX Processor 368, the RX Processor 356, and the controller/processor 359. As such, in one configuration, the aforementioned means may be the TX Processor 368, the RX Processor 356, and the controller/processor 359 configured to perform the functions recited by the aforementioned means.
FIG. 13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1302. The apparatus 1302 is a BS and includes a baseband unit 1304. The baseband unit 1304 may communicate through a cellular RF transceiver with the UE 104. The baseband unit 1304 may include a computer-readable medium /memory. The baseband unit 1304 is responsible for general processing, including the execution of software stored on the computer-readable medium /memory. The software, when executed by the baseband unit 1304, causes the baseband unit 1304 to perform the various functions described supra. The computer-readable medium /memory may also be used for storing data that is manipulated by the baseband unit 1304 when executing software. The baseband unit 1304 further includes a reception component 1330, a communication manager 1332, and a transmission component 1334. The communication manager 1332 includes the one or more illustrated components. The components within the communication manager 1332 may be stored in the computer-readable medium /memory and/or configured as hardware within the baseband unit 1AA4. The baseband unit 1304 may be a component of the BS 310 and may include the memory 376 and/or at least one of the TX processor 316, the RX processor 370, and the controller/processor 375.
The communication manager 1332 includes a periodicity and offset information component 1340 that is configured to transmit periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources, e.g., as described in connection with 1102, 1104, and 1106. The communication manager 1332 further includes a CSI report component 1342 that is configured to receive a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information, e.g., as described in connection with 1108.
The apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned flowcharts of FIG. 11. As such, each block in the aforementioned flowcharts of FIG. 11 may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
In one configuration, the apparatus 1302, and in particular the baseband unit 1304, includes means for transmitting periodicity and offset information associated with a CSI report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources. The apparatus 1302, and in particular the baseband unit 1304, further includes means for receiving a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
The aforementioned means may be one or more of the aforementioned components of the apparatus 1302 configured to perform the functions recited by the aforementioned means. As described supra, the apparatus 1302 may include the TX Processor 316, the RX Processor 370, and the controller/processor 375. As such, in one configuration, the aforementioned means may be the TX Processor 316, the RX Processor 370, and the controller/processor 375 configured to perform the functions recited by the aforementioned means.
It is understood that the specific order or hierarchy of blocks in the processes /flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes /flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” should be interpreted to mean “under the condition that” rather than imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
The following examples are illustrative only and may be combined with aspects of other embodiments or teachings described herein, without limitation.
Clause 1. An apparatus for wireless communication, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: receive periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and transmit a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
Clause 2. The apparatus of clause 1, wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances; and wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances.
Clause 3. The apparatus of clause 2, wherein the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances.
Clause 4. The apparatus of any of clauses 1 to 3, wherein the second measurement periodicity is equal to the second periodicity.
Clause 5. The apparatus of any of clauses 1 to 4, wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances.
Clause 6. The apparatus of any of clauses 1 to 5, wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances.
Clause 7. The apparatus of any of clauses 1 to 5, wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances.
Clause 8. The apparatus of any of clauses 1 to 7, wherein at least a portion of the periodicity and offset information is indicated in a radio resource control (RRC) configuration.
Clause 9. The apparatus of clause 8, wherein the RRC configuration includes the CSI report setting, and the CSI report setting indicates the at least the portion of the periodicity and offset information.
Clause 10. The apparatus of clause 8 or clause 9, wherein the RRC configuration includes a CSI resource setting associated with the CSI report setting, and the CSI resource setting indicates the at least the portion of the periodicity and offset information.
Clause 11. The apparatus of any of clauses 8 to 10, wherein the RRC configuration includes at least one of the first set of reference signal resources or the second set of reference signal resources associated with the CSI report setting.
Clause 12. The apparatus of any of clauses 8 to 11, wherein the RRC configuration includes the CSI report setting, and the CSI report setting is associated with at least one of: a first plurality of sets of reference signal resources for channel measurement including the first set of reference signal resources, or a second plurality of sets of reference signal resources for beam prediction in the temporal domain including the second set of reference signal resources.
Clause 13. The apparatus of any of clauses 1 to 12, wherein at least a portion of the periodicity and offset information is indicated in a medium access control (MAC) control element (MAC-CE) .
Clause 14. The apparatus of clause 13, wherein the MAC-CE is configured to activate a semi-persistently scheduled CSI report or a semi-persistently scheduled resource set including the first set of reference signal resources or the second set of reference signal re sources.
Clause 15. The apparatus of clause 13, wherein the MAC-CE is dedicated for indicating the at least the portion of the periodicity and offset information.
Clause 16. The apparatus of any of clauses 1 to 15, wherein at least a portion of the periodicity and offset information is indicated in associated report configuration information for the CSI report, the CSI report being an aperiodic CSI report.
Clause 17. The apparatus of clause 16, wherein the associated report configuration information selects one of multiple options indicated in an RRC configuration for the at least the portion of the periodicity and offset information.
Clause 18. The apparatus of clause 16, wherein the associated report configuration information directly indicates the at least the portion of the periodicity and offset information.
Clause 19. The apparatus of any of clauses 1 to 18, wherein at least a portion of the periodicity and offset information is indicated in downlink control information (DCI) . Clause 20. The apparatus of clause 19, wherein the DCI selects one of multiple options indicated in an RRC configuration or a medium access control (MAC) control element (MAC-CE) for the at least the portion of the periodicity and offset information.
Clause 21. The apparatus of clause 19, wherein the DCI directly indicates the at least the portion of the periodicity and offset information.
Clause 22. The apparatus of any of clauses 1 to 21, wherein one group of time instances in the first consecutive groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first consecutive groups of time instances.
Clause 23. The apparatus of any of clauses 1 to 22, wherein one group of time instances in the first inconsecutive groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first inconsecutive groups of time instances.
Clause 24. A method of wireless communication at a user equipment (UE) , comprising: receiving periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and transmitting a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
Clause 25. An apparatus for wireless communication, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: transmit periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and receive a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
Clause 26. The apparatus of clause 25, wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances; wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances; wherein the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances; and wherein the second measurement periodicity is equal to the second periodicity.
Clause 27. The apparatus of clause 25 or clause 26, wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances; and wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between one of: a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances; or a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances.
Clause 28. The apparatus of any of clauses 25 to 27, wherein at least a portion of the periodicity and offset information is indicated in a radio resource control (RRC) configuration, a medium access control (MAC) control element (MAC-CE) , associated report configuration information for an aperiodic CSI report, or downlink control information (DCI) .
Clause 29. The apparatus of any of clauses 25 to 28, wherein, in a plurality of groups of time instances selected from the first consecutive groups of time instances or the first inconsecutive groups of time instances, one of the groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another one of the groups of time instances.
Clause 30. A method of wireless communication at a network entity, comprising: transmitting periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of: a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and receiving a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.

Claims

An apparatus for wireless communication, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of:

a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or

a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and

transmit a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
The apparatus of claim 1,

wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances; and

wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances.
The apparatus of claim 2, wherein the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances.
The apparatus of claim 1, wherein the second measurement periodicity is equal to the second periodicity.
The apparatus of claim 1, wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances.
The apparatus of claim 1, wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances.
The apparatus of claim 1, wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances.
The apparatus of claim 1, wherein at least a portion of the periodicity and offset information is indicated in a radio resource control (RRC) configuration.
The apparatus of claim 8, wherein the RRC configuration includes the CSI report setting, and the CSI report setting indicates the at least the portion of the periodicity and offset information.
The apparatus of claim 8, wherein the RRC configuration includes a CSI resource setting associated with the CSI report setting, and the CSI resource setting indicates the at least the portion of the periodicity and offset information.
The apparatus of claim 8, wherein the RRC configuration includes at least one of the first set of reference signal resources or the second set of reference signal resources associated with the CSI report setting.
The apparatus of claim 8, wherein the RRC configuration includes the CSI report setting, and the CSI report setting is associated with at least one of:

a first plurality of sets of reference signal resources for channel measurement including the first set of reference signal resources, or

a second plurality of sets of reference signal resources for beam prediction in the temporal domain including the second set of reference signal resources.
The apparatus of claim 1, wherein at least a portion of the periodicity and offset information is indicated in a medium access control (MAC) control element (MAC-CE) .
The apparatus of claim 13, wherein the MAC-CE is configured to activate a semi-persistently scheduled CSI report or a semi-persistently scheduled resource set including the first set of reference signal resources or the second set of reference signal resources.
The apparatus of claim 13, wherein the MAC-CE is dedicated for indicating the at least the portion of the periodicity and offset information.
The apparatus of claim 1, wherein at least a portion of the periodicity and offset information is indicated in associated report configuration information for the CSI report, the CSI report being an aperiodic CSI report.
The apparatus of claim 16, wherein the associated report configuration information selects one of multiple options indicated in an RRC configuration for the at least the portion of the periodicity and offset information.
The apparatus of claim 16, wherein the associated report configuration information directly indicates the at least the portion of the periodicity and offset information.
The apparatus of claim 1, wherein at least a portion of the periodicity and offset information is indicated in downlink control information (DCI) .
The apparatus of claim 19, wherein the DCI selects one of multiple options indicated in an RRC configuration or a medium access control (MAC) control element (MAC-CE) for the at least the portion of the periodicity and offset information.
The apparatus of claim 19, wherein the DCI directly indicates the at least the portion of the periodicity and offset information.
The apparatus of claim 1, wherein one group of time instances in the first consecutive groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first consecutive groups of time instances.
The apparatus of claim 1, wherein one group of time instances in the first inconsecutive groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another group of time instances in the first inconsecutive groups of time instances.
A method of wireless communication at a user equipment (UE) , comprising:

receiving periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of:

a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or

a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and

transmitting a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
An apparatus for wireless communication, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

transmit periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of:

a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or

a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and

receive a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.
The apparatus of claim 25,

wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, the third consecutive groups of time instances being separated from the first consecutive groups of time instances by the second consecutive groups of time instances;

wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, the fourth consecutive groups of time instances being separated from the second consecutive groups of time instances by the third consecutive groups of time instances;

wherein the second consecutive groups of time instances follow the first consecutive groups of time instances, the third consecutive groups of time instances follow the second consecutive groups of time instances, and the fourth consecutive groups of time instances follow the third consecutive groups of time instances; and

wherein the second measurement periodicity is equal to the second periodicity.
The apparatus of claim 25,

wherein the first inconsecutive groups of time instances include the first consecutive groups of time instances and third consecutive groups of time instances associated with the first set of reference signal resources, and the second measurement periodicity is a time duration between a first initial symbol for channel measurement in the first consecutive groups of time instances and a second initial symbol for channel measurement in the third consecutive groups of time instances; and

wherein the second inconsecutive groups of time instances include the second consecutive groups of time instances and fourth consecutive groups of time instances associated with the second set of reference signal resources, and the second periodicity is a time duration between one of:

a first initial time instance for beam prediction in the second consecutive groups of time instances and a second initial time instance for beam prediction in the fourth consecutive groups of time instances; or

a first initial time instance for CSI reporting associated with the second consecutive groups of time instances and a second initial time instance for CSI reporting associated with the fourth consecutive groups of time instances.
The apparatus of claim 25, wherein at least a portion of the periodicity and offset information is indicated in a radio resource control (RRC) configuration, a medium access control (MAC) control element (MAC-CE) , associated report configuration information for an aperiodic CSI report, or downlink control information (DCI) .
The apparatus of claim 25, wherein, in a plurality of groups of time instances selected from the first consecutive groups of time instances or the first inconsecutive groups of time instances, one of the groups of time instances is associated with a different transmission beam pattern, a different spatial reception (Rx) parameter indication for quasi-colocation (QCL) , or a different set of reference signal resources for channel measurement associated with the CSI report setting, than another one of the groups of time instances.
A method of wireless communication at a network entity, comprising:

transmitting periodicity and offset information associated with a channel state information (CSI) report setting, the CSI report setting being associated with a first set of reference signal resources for channel measurement and a second set of reference signal resources for beam prediction in a temporal domain, and the periodicity and offset information indicating at least one of:

a first measurement periodicity between first consecutive groups of time instances associated with the first set of reference signal resources, a first quantity of the first consecutive groups of time instances, and a second measurement periodicity between first inconsecutive groups of time instances associated with the first set of reference signal resources, or

a first periodicity between second consecutive groups of time instances associated with the second set of reference signal resources, a second quantity of the second consecutive groups of time instances, and a second periodicity between second inconsecutive groups of time instances associated with the second set of reference signal resources; and

receiving a CSI report including CSI associated with at least one of the first set of reference signal resources associated with the periodicity and offset information or the second set of reference signal resources associated with the periodicity and offset information.