Beam updating and channel state information (CSI) report
By jointly triggering beam updates and CSI reporting through a single DCI, the inefficiencies in multi-TRP communication are addressed, improving spectral efficiency and reliability while optimizing resource utilization.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-12
AI Technical Summary
The inefficiency and increased signaling overhead in wireless communications systems due to separate triggering of beam updates and aperiodic CSI reports in multi-TRP communication, which can lead to suboptimal performance and resource utilization.
Jointly triggering beam updating and CSI reporting via a single DCI, reducing signaling overhead and improving spectral efficiency and reliability in multi-TRP communication.
This approach reduces latency and optimizes resource utilization by integrating beam updates and CSI reporting, enhancing performance in multi-TRP scenarios.
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Figure CN2025090514_12032026_PF_FP_ABST
Abstract
Description
BEAM UPDATING AND CHANNEL STATE INFORMATION (CSI) REPORTTECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to a paging alert signal.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication devices, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
[0003] Multi-TRP communication utilizes multiple transmission reception points (TRPs) to coordinately serve a UE, boosting wireless network coverage, reliability, and throughput via spatial diversity and possible interference mitigation. Specifically, the TRP or UE employ beamforming for directional signaling. The optimal beams (or sub-optimal beams) can be identified by e.g., measuring reference signals (e.g., SSB / CSI-RS) . Furthermore, UE provides periodic or aperiodic CSI feedback (e.g., including channel quality indicator, CQI, precoding matrix indicator, PMI and / or rank indicator, RI) to help TRPs optimize modulation and beamforming. Dynamic adaptation to channel changes or mobility maintains link quality.
[0004] The present disclosure relates to methods, apparatuses, and systems related to the beam updating and channel state information (CSI) report.
[0005] In a first aspect of the solution, a terminal device receives, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell. Then, the terminal device transmits, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0006] In some implementations of the method and apparatuses described herein, the terminal device may further receive from the network device a first one or more report configurations comprising the report configuration. A report configuration of the first one or more report configurations is associated with a beam of one or more activated beams, or a report configuration of the first one or more report configurations is associated with the one or more activated beams.
[0007] In some implementations of the method and apparatuses described herein, the report configuration comprises at least one of the following: a first set of reference signals configured for a channel measurement; or a second set of reference signals configured for an interference measurement. A reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams.
[0008] In some implementations of the method and apparatuses described herein, the one or more activated beams are associated with a Control Resource Set (CORESET) pool index of one or more CORESET pool indexes, and / or the one or more activated beams is associated with an indicated beam based on an order or position of the indicated beam among the one or more indicated beams.
[0009] In some implementations of the method and apparatuses described herein, the CSI report is carried in a periodic physical uplink shared channel (PUSCH) . In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates a first time offset. In some implementations of the method and apparatuses described herein, the CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after a physical downlink control channel (PDCCH) carrying the DCI or a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset.
[0010] In some implementations of the method and apparatuses described herein, the CSI report is carried in a physical uplink control channel (PUCCH) . The DCI or the report configuration indicates the following: a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the PUCCH; or a third time offset between a PDSCH scheduled by the DCI and the PUCCH.
[0011] In some implementations of the method and apparatuses described herein, the DCI indicates the third time offset by comprising the following: a first field indicating the third time offset and a time allocation for a second uplink control channel comprising an acknowledge for a PDCCH scheduled by the DCI; or a second field indicting the third offset, wherein the second field is different from the first field.
[0012] In some implementations of the method and apparatuses described herein, the terminal device may further receive, from the network device, second one or more report configurations comprising the report configuration. A report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI.
[0013] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUSCH, the DCI or the report configuration indicates a fourth time offset, and the CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after, by at least the fourth time offset, one of a further PUSCH or a PUCCH comprising an acknowledge for the DCI, or an earliest slot of an indicated beam in the DCI being applied.
[0014] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUCCH. The DCI or the report configuration indicates: a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH; or a sixth time offset between an earliest slot in which the indicated beam in the DCI is applied and the PUCCH.
[0015] In some implementations of the method and apparatuses described herein, the terminal device may further perform a measurement on a reference signal corresponding to the beam not earlier than the indicated beam in the DCI is applied.
[0016] In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates one of the following: a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and the reference signal; or an eighth time offset between a sixth offset between an earliest slot in which the indicated beam in the DCI is applied and the reference signal.
[0017] In some implementations of the method and apparatuses described herein, the DCI comprises a field indicating whether the CSI report is triggered.
[0018] In some implementations of the method and apparatuses described herein, the terminal device transmit the CSI report by the following: determining that the indicated beam in the DCI is associated with the report configuration among a plurality of configurations from the network device.
[0019] In some implementations of the method and apparatuses described herein, a single field in the DCI indicates the following: the CSI report being triggered or not; and a time allocation related to the transmission of the CSI report.
[0020] In a second aspect of the solution, a network device transmits, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell. Then, the network device receives, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0021] In some implementations of the method and apparatuses described herein, the network device may further transmit to the terminal device a first one or more report configurations comprising the report configuration. A report configuration of the first one or more report configurations is associated with a beam of one or more activated beams; or a report configuration of the first one or more report configurations is associated with the one or more activated beams.
[0022] In some implementations of the method and apparatuses described herein, the report configuration comprises at least one of the following: a first set of reference signals configured for a channel measurement; or a second set of reference signals configured for an interference measurement. A reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams.
[0023] In some implementations of the method and apparatuses described herein, the one or more activated beams are associated with a Control Resource Set (CORESET) pool index of one or more CORESET pool indexes; or the one or more activated beams is associated with an indicated beam based on an order or position of the indicated beam among the one or more indicated beams.
[0024] In some implementations of the method and apparatuses described herein, the CSI report is carried in a periodic physical uplink shared channel (PUSCH) , the DCI or the report configuration indicates a first time offset, and the CSI report is transmitted in a PUSCH occasion of the periodic PUSCH, wherein the PUSCH occasion is after a physical downlink control channel (PDCCH) carrying the DCI or a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset.
[0025] In some implementations of the method and apparatuses described herein, the CSI report is carried in a physical uplink control channel (PUCCH) , and the DCI or the report configuration indicates the following: a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the uplink control channel and the PUCCH; a third time offset between a PDSCH scheduled by the DCI and the PUCCH.
[0026] In some implementations of the method and apparatuses described herein, the DCI indicates the third offset by comprising the following: a first field indicating the third time offset and a time allocation for a second uplink control channel comprising an acknowledge for a PDCCH scheduled by the DCI; or a second field indicting the third offset, wherein the second field is different from the first field.
[0027] In some implementations of the method and apparatuses described herein, the network device may further transmit, to the terminal device, second one or more report configurations comprising the report configuration. A report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI.
[0028] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUSCH, the DCI or the report configuration indicates a fourth time offset, and the CSI report is transmitted in a PUSCH occasion of the periodic PUSCH, wherein the PUSCH occasion is after, by at least the fourth time offset, one of a further PUSCH or a PUCCH comprising an acknowledge for the DCI, or the earliest slot of an indicated beam in the DCI being applied.
[0029] In some implementations of the method and apparatuses described herein, the CSI report is carried in a uplink control channel, and the DCI or the report configuration indicates: a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH; or a sixth time offset between the earliest slot in which the indicated beam in the DCI is applied and the PUCCH.
[0030] In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates one of the following: a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and a reference signal; or an eighth time offset between the earliest slot in which the indicated beam in the DCI is applied and a reference signal.
[0031] In some implementations of the method and apparatuses described herein, the DCI comprises a field indicating whether the CSI report is triggered.
[0032] In some implementations of the method and apparatuses described herein, the CSI report is received based on that the beam is associated with the report configuration.
[0033] In some implementations of the method and apparatuses described herein, a single field in the DCI indicates the following: the CSI report being triggered or not; and a time offset related to the transmission of the CSI report.
[0034] In a third aspect, there is provided a processor for communication, comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell; and transmit, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0035] In a fourth aspect, there is provided a processor for communication, comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: transmit, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell; and receive, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0036] In a fifth aspect, there is provided a method performed by a terminal device, the method comprising: receiving, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell; and transmitting, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0037] In a sixth aspect, there is provided a method performed by a network device, the method comprising: transmitting, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell; and receiving, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0038] In a seventh aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method according to any of the above methods.BRIEF DESCRIPTION OF THE DRAWINGS
[0039] FIG. 1A illustrates an example of a wireless communications system that supports the operation related to device in accordance with aspects of the present disclosure.
[0040] FIG. 1B illustrates an example of a multi-TRP communication scenario accordance with aspects of the present disclosure.
[0041] FIG. 2 illustrates an example signaling process related to the beam updating and channel state information (CSI) report in accordance with some example embodiments of the present disclosure.
[0042] FIG. 3 illustrates an example of the timing requirement of transmitting the channel state information (CSI) report in the case that the CSI report configuration is associated with the activated beams in accordance with aspects of the present disclosure.
[0043] FIG. 4 illustrates another example of the timing requirement of transmitting the channel state information (CSI) report in the case that the CSI report configuration is associated with the indicated beams in accordance with aspects of the present disclosure.
[0044] FIG. 5 illustrates an example of a device that supports the operation related to ambient IoT device in accordance with aspects of the present disclosure.
[0045] FIG. 6 illustrates an example of a processor that supports the operation related to ambient IoT device in accordance with aspects of the present disclosure.
[0046] FIGS. 7 through 8 illustrate flowcharts of methods that support the superimposed pilot and data transmission in accordance with aspects of the present disclosure.DETAILED DESCRIPTION
[0047] Principles of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein may be implemented in various manners other than the ones described below.
[0048] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0049] References in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0050] It shall be understood that although the terms “first” and “second” or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0051] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof.
[0052] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as, 5G NR, long term evolution (LTE) , LTE-advanced (LTE-A) , wideband code division multiple access (WCDMA) , high-speed packet access (HSPA) , narrow band internet of things (NB-IoT) , and so on. Further, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will also be future type communication technologies and systems in which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
[0053] As used herein, the term “network device” generally refers to a node in a communication network via which a terminal device can access the communication network and receive services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , a radio access network (RAN) node, an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a remote radio unit (RRU) , a radio header (RH) , an infrastructure device for a V2X (vehicle-to-everything) communication, a transmission and reception point (TRP) , a reception point (RP) , a remote radio head (RRH) , a relay, an integrated access and backhaul (IAB) node, a low power node such as a femto BS, a pico BS, and so forth, depending on the applied terminology and technology.
[0054] As used herein, the term “terminal device” generally refers to any end device that may be capable of wireless communications. By way of example rather than a limitation, a terminal device may also be referred to as a communication device, a user equipment (UE) , an end user device, a subscriber station (SS) , an unmanned aerial vehicle (UAV) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) . The terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable terminal device, a personal digital assistant (PDA) , a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback appliance, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , a USB dongle, a smart device, wireless customer-premises equipment (CPE) , an internet of things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device (for example, a remote surgery device) , an industrial device (for example, a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms: “terminal device, ” “communication device, ” “terminal, ” “user equipment” and “UE, ” may be used interchangeably.
[0055] In some example embodiments of the disclosure, the term “transmission reception point (TRP) ” refers to a physical node or antenna array in a wireless network (e.g., 5G or future communication generation) responsible for transmitting and receiving signals. It is typically part of a base station or distributed unit, enabling communication with user equipment (UE) . TRPs enhance coverage, capacity, and reliability by supporting multi-antenna techniques like beamforming, spatial multiplexing, and coordinated multi-point (CoMP) operations. A TRP can operate independently or collaboratively with other TRPs, depending on network architecture and deployment goals.
[0056] In addition, in the communication system, the TRP may be uniquely identified by or be uniquely associated with some certain parameters or signals, such as, control resource set (CORESET) pool index (which may be also referred to as “CORESETPoolIndex” ) , reference signal (e.g., Channel State Information, CSI-reference signal, RS or synchronization signal block, SSB) , transmission configuration indication (TCI) state. In some example embodiments of the disclosure, the terms TRP, CORESET pool index, reference signal specific to the TRP or TCI state specific to the TRP may be used interchangeably, without any limitation.
[0057] The TRP communication may operate in different modes, e.g., single DCI (S-DCI) mode or multiple DCI (M-DCI) mode. The S-DCI refers to that a single DCI schedules transmissions from multiple TRPs to a UE. The TRPs coordinate using shared scheduling parameters (e.g., time / frequency resources, MCS) , enabling joint transmission or diversity schemes with minimal signaling overhead. The M-DCI refers to that each TRP transmits its own DCI to the UE, allowing independent scheduling (e.g., separate resource allocations, MCS) . This offers flexibility for dynamic TRP coordination but increases control channel overhead.
[0058] In the multi-TRP operation, the spatial link between the UE and one or more TRPs may be dynamically adjusted in order to maintain optimal signal quality and adapt to the channel variation. The beam of a TRP serving the UE may be updated by e.g., downlink control information (DCI) , such as S-DCI or M-DCI. Specifically, beam updating for a TRP is signaled via downlink (DL) DCI (e.g., DCI format 1_1 / 1_2) , which carries transmission control indication (TCI) -State information to update the UE’s beam configuration. When a UE transmits HARQ-ACK via PUCCH or PUSCH for a DCI with beam updates, the new TCI-State applies starting from the first slot after a specified delay to ensure timing alignment.
[0059] In turn, Channel State Information (CSI) reporting enables coordinated optimization of transmissions related to multiple TRPs by providing critical feedback on channel conditions. The UE measures and reports metrics like Channel Quality Indicator (CQI) , Precoding Matrix Indicator (PMI) , and Rank Indicator (RI) for each TRP or aggregated channels, allowing the network to dynamically adjust beamforming, scheduling, and multi-TRP cooperation strategies. Generally, the CSI report includes periodic, semi-persistent or aperiodic CSI report. Considering the overhead and efficiency, the aperiodic CSI report is the most efficient way to get the channel information which is triggered by a UL DCI.
[0060] In view of the above, the beam updating and aperiodic CSI report is separately indicated. The beam updating is triggered by a DL DCI and the (aperiodic) CSI report is triggered a UL DCI separately. As such, the inefficiency and increased signaling overhead may be resulted by the separate triggering of beam updates (via DL DCI) and aperiodic CSI reports (via UL DCI) .
[0061] In view of these analyses and considerations, embodiments of the disclosure provide a solution for jointly triggering beam updating and CSI report associated with the updated indicated beam which can reduce the overhead of a UL DCI to improve the performance.
[0062] In an aspect, a terminal device receives, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell. Then, the terminal device transmits, to the network device, a channel state information (CSI) report based on the DCI. The CSI report is determined based on a report configuration and is associated with the indicated beam.
[0063] In this way, the signaling overhead is reduced by enabling joint triggering of beam updates and associated CSI reports via a single DCI. This improves spectral efficiency and reliability in the future multi-TRP communication, and reduces latency and optimizing resource utilization.
[0064] FIG. 1A illustrates an example of a wireless communications system 100 that supports the operation in accordance with aspects of the present disclosure The wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) ) , one or more UEs 104, a core network 106, and a packet data network 108. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0065] The one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. A network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0066] A network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112. For example, a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102. Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0067] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communications system 100. In some other implementations, a UE 104 may be mobile in the wireless communications system 100.
[0068] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1. A UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
[0069] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0070] A network entity 102 may support communications with the core network 106, or with another network entity 102, or both. For example, a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) . In some implementations, the network entities 102 may communicate with each other directly (e.g., between the network entities 102) . In some other implementations, the network entities 102 may communicate with each other or indirectly (e.g., via the core network 106) . In some implementations, one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0071] In some implementations, a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
[0072] An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) . In some implementations, one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0073] Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU. For example, a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160.
[0074] Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack. The DU may support one or multiple different cells (e.g., via one or more RUs) . In some implementations, a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
[0075] A CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u) , and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface) . In some implementations, a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
[0076] The core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
[0077] The core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102. The core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
[0078] In the wireless communications system 100, the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the network entities 102 and the UEs 104 may support different resource structures. For example, the network entities 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the network entities 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0079] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.
[0080] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0081] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacing of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0082] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0083] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0084] FIG. 1B illustrates an example of a multi-TRP communication scenario accordance with aspects of the present disclosure. The number of TRPs in this example is only an example. It is to understood that there may be fewer TRP, or more TRPs which are not shown in FIG. 1B.
[0085] In the example of FIG. 1B, the terminal device 104 is served by the network device 102 via multiple TRPs including e.g., the first TRP 125 and the second TRP 135. As mentioned above, the TRP may be uniquely identified by or associated with some certain parameters. For example, the first TRP may be identified by or associated with the parameter “first CORESETPoolIndex value” , and the second TRP may be identified by or associated with the parameter “second CORESETPoolIndex value” . In a further example, if M-DCI based M-TRP is applied, then each TRP may be identified by one of M configured CORESETPoolIndex values. That is, there is one to one mapping between M indicated beams and M CORESETPoolIndex values. Alternatively, if the number of TRPs equals 1 (or M=1) , then there may also be no CORESETPoolIndex value that needs to be configured.
[0086] As mentioned above, the TRPs may utilize spatial filter or beamforming technology to enhance coverage, capacity, and reliability. Specifically, a TRP may be associated with a list of activated beams. The list of activated beams may be considered as the set of beams of a TRP which is currently available to the UE. In other words, these beams are candidate beams that the UE needs to monitor or use for data transmission within a specific time window.
[0087] In an example, in M-DCI based M-TRP, a list of activated beams associated with one TRP may be activated by a medium access control (MAC) control element (CE) associated with one CORESETPoolIndex corresponding to this TRP. Alternatively, in S-DCI based M-TRP, a first list of activated first beams is associated with the first TRP, a second list of activated beams is associated with the second TRP and so on. In the example of FIG. 1B, the list of beams in block 140 are the activated beams associated with the second CORESETPoolindex value, and the list of beams 140 is activated by the MAC CE associated with the second CORESETPoolindex value.
[0088] As such, a list of activated beams may be associated with one of M TRPs according to M TCI state activation MAC CEs in M-DCI based M-TRP, or according to one TCI state activation MAC CE in S-DCI based M-TRP.
[0089] In addition, each TRP may be associated with one indicated beam. In the example embodiments of the disclosure, this indicated beam refers to a beam indicated from the associated list of activated beams by the DCI. In an example, an index of a beam is indicated in the DCI as the specific beam used for the current downlink transmission. Moreover, the specific beam for the current transmission is updated by the DL DCI.
[0090] In general, in the M-DCI based M-TRP, the indicated beam of one TRP (CORESETPoolIndex value) may be indicated by a separate DL DCI, while in the S-DCI based M-TRP, the indicated beams of M TRPs may be indicated by a joint DL DCI.
[0091] In this joint DL DCI, one indicated beam may be associated with the corresponding TRP explicitly or implicitly. In the explicit association manner, the index of the one beam may be associated with a CORESETPoolIndex value, and thus is associated with the TRP with the CORESETPoolIndex value. Alternatively, in the implicit association manner, an indicated beam may be associated with a TRP based on the order or position of this indicated beam among the one or more indicated beams in the joint DCI. As an example, there are four TRPs, and an indicated beam of one or more indicated beams in a field of the joint DCI corresponds to the TRP based on its order, sequence or position. For example, the one or more indicated beam may be in the form {beam 1, beam 1, beam 3, beam 4} , wherein the beam 1 in the first order may be associated with the TRP 1, since it is the first one. The beam 1 in the second order may be associated with the TRP 2, since it is the second one, and so on. In this way, the indicated beam may be associated with the corresponding TRP accordingly, though there is no explicit CORESETPoolIndex value. In turn, a list of activated beams associated with aTRP may be associated with an indicated beam accordingly. In the example of FIG. 1B, the beam 150 represents an indicated beam in a DL DCI among the list of activated beams associated with the second CORESETPoolIndex value.
[0092] That is, no matter S-DCI or M-DCI, the beam updating of the indicated beam is triggered by DL DCI. However, an aperiodic CSI report is separately triggered by a UL DCI separately. Thus, the inefficiency and increased signaling overhead may be resulted.
[0093] Reference is now made to FIG. 2 which illustrates an example signaling process 200 related to the beam updating and channel state information (CSI) report in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1A. For example, the terminal device 104 may be the UE 104 as shown in FIGS. 1A to 1B. The network entity 102 in FIG. 1A.
[0094] It is to be understood that the steps and the order of the steps in FIG. 2 are merely for illustration, and not for limitation. It is to be understood that process 200 may further include additional blocks not shown and / or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
[0095] In the signaling process 200, the network device 102 transmits (210) to the terminal device 104 DCI 215 related to updating an indicated beam of one or more indicated beams in a serving cell.
[0096] Upon receiving (220) the DCI 215, the terminal device 104 may update the indicated beam accordingly. For example, the DCI indicates that the indicated beam associated with a CORESETPoolindex (or a TRP) is changed from beam 1 to beam 2. Then, the terminal device 104 may perform the operation related to updating the beam. Moreover, based on the DCI 215, the terminal device also transmits (230) a CSI report 235 to the network device. The CSI report is associated with the indicated beam in the DCI 215. Furthermore, the CSI report is determined based on a corresponding report configuration. In turn, the network device 102 receives (240) the CSI report 235 accordingly.
[0097] In this way, the signaling overhead is reduced by enabling joint triggering of beam updates and associated CSI reports via a single DCI. This improves spectral efficiency and reliability in the future multi-TRP communication, and reduces latency and optimizing resource utilization.
[0098] In some embodiments, the report configuration may be the same as the configuration for reporting the CSI information which is configured in advance. Alternatively, the (CSI) report configuration for the CSI report triggered by the DL DCI related to updating beam may be separately configured. For example, the network device 102 may transmit or indicate to the terminal device 104 a plurality of report configurations comprising the above corresponding report configuration.
[0099] In some embodiments, the plurality of report configurations may include first one or more report configurations. A report configuration of the first one or more report configurations may be associated with a beam of one or more activated beams (e.g., a list of activated beams) . As an example, for each activated beam of a TRP (or for each activated beam associated with a CORESETPoolIndex) , an individual CSI report configuration may be configured to be associated with this beam. As such, different CSI report configurations may be associated with different activated beams. Assuming that there are K activated beams associated with each TRP of M TRPs. In this case, there may be at most M*K CSI report configurations associated with the M*K activated beams for the M TRPs.
[0100] In addition, the CSI report 235 may be triggered explicitly or implicitly. In some embodiments, the DCI 215 related to updating the indicated beam may directly indicate whether the CSI report is triggered or not. For example, a field in the DCI 215 may be used to indicate whether the CSI report is triggered. In this case, the terminal device 104 may determine whether to transmit the CSI report based on this field in the DCI 215. In some cases, the CSI report is triggered only if the indicated beam is changed as the beam associated with the CSI report configuration, even if triggering the CSI report is indicated by the DCI.
[0101] Alternatively, the CSI report may be triggered based on that one or more conditions are fulfilled. In some embodiments, the condition may include that an indicated beam associated with a CORESETPoolIndex is updated (or is changed to) to a beam in the DCI 215, and the beam is associated with a report configuration. For example, there is a report configuration associated with the beam, among the first one or more report configurations. In this case, the terminal device 104 may determine whether to transmit the CSI report based on determining whether the condition is fulfilled.
[0102] In addition, regarding the transmission of the CSI report, the CSI report may be carried in any uplink channel transmission, without any limitation. In some embodiments, the CSI report may be carried in a physical uplink shared channel (PUSCH) . For example, the CSI report may be carried in a periodic physical uplink shared channel (PUSCH) . The period PUSCH may include a configured grant (CG) Type 1 PUSCH. In a specific example, the preconfigured PUSCH, such as CG Type 1 PUSCH, may be configured in the report configuration for transmitting the CSI report. Without any limitation, for the other configuration, the legacy scheme in fifth generation (5G) specification may be reused directly.
[0103] In addition, the transmission of the CSI report needs to follow a certain timing requirement. For example, the DCI 215 or the report configuration associated with the indicated beam may indicate a first time offset. Then, the CSI report 235 may be transmitted in the earliest PUSCH occasion of the periodic PUSCH, which is after a physical downlink control channel (PDCCH) carrying the DCI by at least the first time offset. Alternatively, the CSI report 235 may be transmitted in the earliest PUSCH occasion of the periodic PUSCH, which is after a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset. In some embodiments, the first time offset may include a time length, a number of symbols, slots or frames.
[0104] As an example, if the CSI report 235 is transmitted in a PUSCH, such as CG Type 1 PUSCH, then the CSI report is transmitted in the first available PUSCH that is X symbols (or, Xms or X slots) after a PDCCH carrying the DL DCI, or a PDSCH scheduled by the DL DCI.
[0105] In addition to the PUSCH or alternatively, the CSI report may be carried in a physical uplink control channel (PUCCH) . In a specific example, a resource for a preconfigured PUCCH may be configured in the report configuration for transmitting the CSI report.
[0106] In some embodiments, the timing for transmitting the PUCCH is determined with reference to a PDCCH carrying the DCI 215. For example, the DCI 215 or the report configuration associated with the indicated beam may indicate a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the PUCCH. In this case, the terminal device 104 may transmit the PUCCH carrying the CSI report after the reception of the PDCCH by the second offset.
[0107] Alternatively, the timing for transmitting the PUCCH is determined with reference to a physical downlink shared channel (PDSCH) scheduled by the DL DCI 215. For example, the DCI 215 or the report configuration associated with the indicated beam may indicate a third time offset between a PDSCH scheduled by the DCI 215 and the PUCCH carrying the CSI report. Alternatively, the DCI 215 may indicate a time allocation for a second PUCCH comprising an acknowledge for a PDCCH scheduled by the DCI, and the third time offset may be determined based on the time allocation for the second PUCCH. That is, the DCI may directly use the time allocation field (which may be also referred to as a second field in some embodiments) for the second PUCCH to indicate the third offset. It means that the slot allocation of the second PUCCH and the resource for the PUCCH carrying the CSI report may be the same, as indicated by the time allocation indication field for the second PUCCH. Alternatively, the DCI may include another field indicating another field (which may be also referred to as a first field in some embodiments) indicating a time allocation for a second PUCCH comprising an acknowledge for a PDCCH scheduled by the DCI, and the terminal device 104 may transmit the PUCCH carrying the CSI report based on this field. It means that the slot allocation of the PUCCH carrying the CSI report and the slot allocation of the second PUCCH may be indicated by different fields in the DCI.
[0108] As an example, in the case that the third slot offset is indicated by the DL DCI, the time allocation of PUCCH transmitting the HARQ-ACK which is indicated in the DL DCI may be reused. If the configured PUCCH overlaps with the PUCCH resource for HARQ-ACK in at least one symbol, then the CSI report and HARQ-ACK may be both transmitted in a determined PUCCH resource according to the payload of the CSI report and HARQ-ACK, and the PUCCH configured for the CSI report may be dropped. Only for discussion clarity, the reference is made to FIG. 3 now.
[0109] FIG. 3 illustrates an example of the timing requirement of transmitting the channel state information (CSI) report in the case that the CSI report configuration is associated with the activated beams in accordance with aspects of the present disclosure.
[0110] In the example of FIG. 3, only to discuss simplicity, assuming that it is a single TRP operation, and there are 4 activated beams which are beams 1-4 respectively. The CSI report configurations 1 to 4 are configured to be associated with these beams 1-4, respectively. As an example, the block 305 represents the CSI report configuration 2 associated with beam 2.
[0111] The terminal device 104 receives DL DCI 310 indicating that the indicated beam is changed from beam 1 to beam 2. Then, the terminal device 104 may transmit a PUCCH (e.g., configured in the CSI report configuration 2) carrying CSI report 2. As mentioned above, the PUCCH may be determined with reference to the DL DCI 310 or a PDSCH 320 scheduled by the DL DCI 310. For example, the DL DCI or the CSI report configuration 2 may indicate the second offset between the DL DCI 310 and the PUCCH 330. Alternatively, the DL DCI or the CSI report configuration 2 may indicate the third time offset between a PDSCH 320 scheduled by the DCI and the PUCCH 330.
[0112] Referring back to FIG. 2, in addition, in some embodiments, a single field in the DCI 215 may indicate both the CSI report being triggered or not, and a time allocation related to the transmission of the CSI report.
[0113] As an example, assuming that how to trigger the CSI report and how to determine the time slot of the configured PUCCH for the CSI report are both indicated by the DL DCI. In this case, both of them may be jointly indicated by a new DCI field. In a specific example, a list of slot offset may be configured for the CSI report configuration. One state of the new DCI field may be used to indicate that the CSI report is not triggered. Other remaining states of the new DCI field may used to indicate that the CSI report is triggered and one slot offset among the list of time offsets. An example is shown in Table 1 Table 1
[0114] In the example of Table 1, the single field may include two bits to indicate the trigger state of the CSI report and slot offset (if triggered) . Correspondingly, a list of slot offsets may be configured by radio resource control (RRC) signaling in advance, the list of slot offsets includes at least three values of slot offsets.
[0115] In addition, as mentioned above, the TRPs (or CORESETPoolIndexes) may operate in the M-DCI mode or S-DCI mode, which may affect some details of the CSI-report transmission. In some embodiments, in the M-DCI mode, the CSI report is transmitted per CORESETPoolIndex (or per TRP) . As an example, if multiple TRPs operates based on M-DCI, then the updating of an indicated beam associated with one CORESETPoolIndex is performed independently since each indicated beam of a CORESETPoolIndex of M CORESETPoolIndexes is updated by a separately DL DCI. In this case, the CSI report and beam updating may be performed per TRP.
[0116] Alternatively, in some embodiments, in the S-DCI mode, a joint CSI report associated with the one or more TRPs may be transmitted. As an example, if multiple TRPs operates based on S-DCI, the updating of the indicated beam associated with different TRPs may be performed jointly by the same DL DCI.
[0117] In this case, the condition of triggering CSI report associated with a CORESETPoolIndex may include that the indicated beam of any TRP is updated and there is at least one CSI report configuration associated with at least one updated indicated beam of the TRP. Accordingly, the CSI report may be triggered which can be indicated by the DL DCI updating the indicated beam of the TRP.
[0118] Specifically, if N (1=<N<=M) indicated beams associated with N N TRPs are updated according to the DL DCI, and the N new indicated beams are associated with N CSI report configurations, then the N CSI reports can be jointly reported in a configured PUSCH or PUCCH resource according to the slot offset configured or indicated for the PUSCH or PUCCH. This means all the CSI report configurations associated with the activated beams of M TRPs are configured with the same PUSCH or PUCCH since the CSI reports may be transmitted jointly.
[0119] Referring back to FIG. 2, in addition, in some embodiments, the report configuration may further indicate reference signal (RS) related to a channel. For example, the report configuration may include a first set of reference signals (which may be also referred to as channel measurement reference signal, CMRS) configured for a channel measurement. In addition or alternatively, the report configuration may include a second set of reference signals (which may be also referred to as interference measurement reference signal, IMRS) configured for an interference measurement. In some embodiments, a reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams. In an example, the beam associated with each RS in the set of RSs may be an activated beam of a TRP. In addition, in some embodiments, the RSs configured in a CSI report configuration may be periodic, semi-persistent or aperiodic. Furthermore, the activated beams associated with the report configuration may be activated for these RSs.
[0120] Still referring to FIG. 2, in the above embodiments, the report configuration of the first one or more report configurations may be associated with an activated beam of one or more activated beams. In some embodiments, the one or more activated beams are associated with a CORESETPoolIndex (or one TRP) of one or more CORESETPoolIndexes. In other words, one or more activated beams are the list of activated beams of one TRP. That is, in some cases, each report configuration may be associated with each activated beam of each CORESETPoolIndex.
[0121] Alternatively, in some embodiments, the report configuration of the first one or more report configurations may be associated with the CORESETPoolIndex of one or more CORESETPoolIndexes. That is, in some cases, each report configuration of the first one or more configurations may be associated with each TRP. In an example, a report configuration of the first one or more configurations may be configured for all activated beams of a TRP. Assuming that there are M TRPs (or M CORESETPoolIndexes) . There may be at most M CSI report configurations associated with the activated beams for the M TRPs.
[0122] Alternatively, the report configuration may be associated with a TRP implicitly, as similar to the implicit association manner discussed above. Specifically, the one or more activated beams may be associated with an indicated beam based on the order or position of the indicated beam among the one or more indicated beams. For discussion purposes, the reference is made to the previous example again, there are four TRPs, and an indicated beam of one or more indicated beams in a field of the DCI corresponds to the TRP based on its order, sequence or position. For example, the one or more indicated beam may be in the form {beam 1, beam 1, beam 3, beam 4} , wherein the beam 1 in the first order may be associated with one or more activated beams corresponding to TRP 1, since it is the first one. The beam 1 in the second order may be associated with one or more activated beams corresponding to TRP 2, since it is the second one, and so on. In this way, the indicated beam may correspond to the one or more activated beams of the corresponding TRP accordingly (e.g., the indicated beam may be the one of the one or more activated beams of the corresponding TRP which is updated to) . As such, the report configuration associated with one or more activated beams may be associated with the corresponding TRP via the corresponding indicated beam accordingly, though there is no explicit CORESETPoolIndex value.
[0123] In addition, no matter the report configuration is associated with an activated beam or a TRP, the CSI report may be triggered in the same way, e.g., by a field indicating whether to trigger the CSI report in the DCI or by fulfilling one or more conditions, discussed above. In addition, the CSI report may be transmitted in the PUSCH or PUCCH in the same way, and the similar timing required is applied accordingly. In addition, similarly, the DCI may include a single field which indicates whether to trigger the CSI report and how to determine the time slot offset (e.g., Table 1) . In addition, regarding the M-DCI or S-DCI mode, the CSI report may be transmitted in the same way as discussed above.
[0124] Still referring to FIG. 2, in addition to the report configuration associated with each activated beam, or all activated beams of a TRP or alternatively, the report configuration may be associated with the indicated beam in the DCI. In some embodiments, the received plurality of report configurations may include second one or more report configurations. Moreover, a report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI. In a specific example, for M indicated beams of M TRPs, there may be at most M CSI report configurations. In addition, since each CORESETPoolIndex (or TRP) is associated with one indicated beam, the report configuration of the second one or more report configurations may also be considered as being associated with one CORESETPoolIndex (TRP) .
[0125] In addition, in the above embodiments, the RS may be periodic, semi-persistent or aperiodic. However, in the case that the report configuration is associated with an indicated beam, the RSs configured in a CSI report configuration is aperiodic, and the RS always follow the new indicated beam.
[0126] Similarly, in the case that the report configuration is associated with an indicated beam, the CSI report may be also transmitted in the PUCCH or PUSCH. As an example, a preconfigured PUSCH, such as CG Type 1 PUSCH in 5G specification, or a PUCCH resource may be configured in the report configuration for transmitting the CSI report. Regarding the other configuration, the legacy scheme in 5G specification may be still reused directly. In addition, similarly, the PUSCH or PUCCH resource configured for each report configuration associated with each TRP may be the same or different in M-DCI mode (e.g., the CSI report per TRP) . In turn, in the S-DCI mode, the PUSCH or PUCCH resource configured for each CSI report configuration associated with each TRP may be the same (e.g., the joint CSI report associated with one or more TRP) .
[0127] Similarly, the CSI report may be triggered similarly if the report configuration is one of the second one or more configurations. For example, a field in DCI 215 may indicate whether to trigger the CSI report. In another example, the CSI report is triggered if one or more conditions are fulfilled. In this case, the one or more conditions may include that the indicated beam is updated in the DL DCI 215, and the new indicated beam is associated with a report configuration of the second one or more report configurations.
[0128] Compared to the above embodiment where the report configuration is associated with activated beam, the timing requirement for the RS measurement and the CSI report transmission in the case that the report configuration is associated with the indicated beam is different. In general, the timing requirement is related to when the indicated beam is valid or is applied. Specifically, the timing of the measurement of RSs and the transmission of the CSI report cannot be earlier than the applicable time of the new indicated beam. In some embodiments, the time slot for the PUSCH or PUCCH configured for transmitting the CSI report may be based on a further time slot of a PUSCH or PUCCH carrying the HARQ-ACK for a DL DCI updating the indicated beam, or may be based on the first slot in which the new indicated beam is applicable.
[0129] Taking the period PUSCH (e.g., CG PUSCH) carrying the CSI report as an example, the DCI 215 or a report configuration of the second one or more configurations may indicate a fourth time offset. Then, the CSI report may be transmitted in a first earliest PUSCH occasion of the periodic PUSCH, which is after, by at least the fourth time offset, a further PUSCH or a PUCCH comprising an acknowledge for the DCI 215. Alternatively, the CSI report may be transmitted in a second earliest PUSCH occasion of the periodic PUSCH, which is after, by at least the fourth time offset, an earliest slot of an new indicated beam in the DCI being applied.
[0130] In a specific example, assuming that the CSI report 235 is transmitted in a configured PUSCH, such as CG Type 1 PUSCH. This CSI report 235 may be transmitted in the first available PUSCH which is after, by X symbols, Xms or X slots (i.e., the fourth time offset) , a further PUSCH or PUCCH, and this further PUSCH or PUCCH carries a Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) for the DL DCI 215 indicating the updated indicated beam. Alternatively, This CSI report 235 may be transmitted in the first available PUSCH which is after, by X symbols, Xms or X slots, a first slot where the new indicated beam indicated by the DL DCI is applicable.
[0131] In addition to the PUSCH or alternatively, the CSI report associated with the report configuration of the second one or more report configurations may also be carried in the PUCCH. In some embodiments, the report configuration of the second one or more report configurations, or the DCI may indicate a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH carrying the CSI report. In an example, the fifth time offset may be a slot offset between a PUSCH or PUCCH carrying the HARQ-ACK and the configured PUCCH carrying the CSI report.
[0132] Alternatively, the report configuration of the second one or more report configurations, or the DCI may indicate a sixth time offset between an earliest slot in which the indicated beam in the DCI 215 is applied and the PUCCH carrying the CSI report 235. In an example, the sixth time offset may be between a first slot where the new indicated beam indicated by the DL DCI is applicable and the PUCCH carrying the CSI report 235. To discuss clarity, the reference is made to FIG. 4 now.
[0133] FIG. 4 illustrates another example of the timing requirement of transmitting the channel state information (CSI) report in the case that the CSI report configuration is associated with the indicated beams in accordance with aspects of the present disclosure.
[0134] In the example of FIG. 4, assuming that the TRPs are operated in the S-DCI mode. Two report configurations (e.g., the second one or more report configurations) including report configuration 1 and report configuration 2 (e.g., the report configuration 405) may be configured to be associated with TRP 1 and TRP 2 respectively (i.e., configured to be associated with the indicated beams of the TRP 1 and TRP 2, respectively) . In addition, the DL DCI 410 indicates that the indicated beams of the two TRPs are both updated. The shown PDSCH 420 is the downlink transmission scheduled by the DL DCI 410, and the shown PUCCH 430 carries the HARQ-ACK for the DL DCI 410. Then, in some embodiments, the PUCCHs 450 configured in configurations report 1 and 2 (the PUCCHs may be the configured with same resource) should be transmitted after the PUCCH 430 by the fifth time offset 460. Alternatively, as mentioned above, the PUCCHs 450 configured in configurations report 1 and 2 should be transmitted after the first slot when the new indicated beam is applicable by the sixth time slot 470.
[0135] Then a PUCCH configured in CSI report 1 and 2 configuration which is same will transmit CSI report 1 and CSI report 2 in a time slot according to the time offset between the PUCCH carrying HARQ-ACK corresponding to the DL DCI and the PUCCH according to Option 1, or according to the time offset between a first slot 440 where the new indicated beams are applicable and the PUCCH according to Option 2.
[0136] Referring back to FIG. 2, as mentioned above, the measurement of RS is also determined with reference to when the indicated beam is applicable. In some embodiments, the measurement of RSs for the CSI report configuration associated with one TRP of M TRPs may be not earlier than the first slot when the new indicated beam is applicable. Therefore, similarly, the time slot of RSs configured for the CSI report is based on the time slot a PUSCH or PUCCH carrying the HARQ-ACK for a DL DCI updating the indicated beam, or is based on the first slot of the new indicated beam is applicable.
[0137] In some embodiments, the DCI or the report configuration of the second one or more report configurations may indicate a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and the reference signal. As an example, the seventh time offset may be a slot offset between a PUSCH or PUCCH carrying a HARQ-ACK for the DL DCI 215 and the RS that is configured for a RS in the CSI report configuration. Furthermore, the network device 102 may ensure that the time slot of any RS in the report configuration is not earlier than the first slot when the new indicated beam indicated by the DL DCI is applicable, since the RS follows the new indicated beam. Specifically, this can be guaranteed by network device implementation.
[0138] Alternatively, in some embodiments, the DCI or the report configuration of the second one or more report configurations may indicate an eighth time offset between an earliest slot in which the indicated beam in the DCI is applied and the reference signal. For example, the eighth time offset may be a slot offset between a first slot when the new indicated beam indicated by the DL DCI is applicable and the RS. To discuss clarity, the reference is also made to FIG. 4 now.
[0139] In the example of FIG. 4, the RS 475 is the RS configured in the CSI report configuration 1 and / or 2. In some embodiments, the time allocation of the RS may be determined according to a slot offset (i.e., the seventh time offset) 480 between the PUCCH carrying HARQ-ACK corresponding to the DL DCI and the RS. Alternatively, the time allocation of the RS may be determined according to another slot offset (i.e., the eighth time offset) 490 between the first slot where the new indicated beams are applicable and the RS.
[0140] In addition, in some embodiments, the timing gap between the PUSCH or PUCCH carrying the CSI report and the last RS configured in the CSI report configuration also needs to satisfy a timing restriction (for example, the restriction specified in 5G specification) . Therefore, a further slot offset may be configured or indicated by the network device 102 for transmitting the PUSCH or PUCCH carrying the CSI report, in order to ensure that the timing restriction. In this case, the transmission of the CSI report need to fulfill both the slot offset (s) related to applying the new updated beam and the further slot offset related to this timing restriction. This may be guaranteed by the implementation of the network device.
[0141] Referring back to FIG. 2, similarly, in the case that the report configuration is one of the second one or more configurations, the DCI 215 may also a single field which indicates whether to trigger the CSI report and how to determine the time slot offset (e.g., Table 1) . For example, a list of slot offsets is configured for the CSI report configuration. In addition, one state of the new DCI field may be used to indicate that the CSI report is not triggered, while the remaining other states of the new DCI field is used to indicate that the CSI report is triggered and the slot offset is one of the list of configured slot offsets.
[0142] In addition, the CSI report may be transmitted similarly when the TRP operates in the S-DCI mode or M-DCI mode. In an example, if M TRPs operates in the M-DCI mode, then the updating of an indicated beam associated with one TRP may be performed independently since each indicated beam of a TRP of M TRPs is updated by a separately DL DCI. Both the CSI report and beam updating for each TRP are performed per TRP.
[0143] If the M TRPs operates in S-DCI mode, then the updating of the indicated beam associated with different CORESETPoolIndexes (or TRPs) may be performed jointly by using a same DL DCI. In this case, the condition of triggering CSI report associated with TRP may include whether the indicated beam of any TRP is updated and there is at least one report configuration associated with at least one updated indicated beam of the TRP. then the CSI report can be triggered which can be indicated by the DL DCI updating the indicated beam of the TRP. Specifically, if N (1=<N<=M) indicated beams associated with N CORESETPoolIndexes (i.e., N TRPs) are updated according to the DL DCI, and the N new indicated beams are associated with N CSI report configurations, then the N CSI reports can be jointly reported in a configured PUSCH or PUCCH resource according to the slot offset configured or indicated for the PUSCH or PUCCH. This means all the CSI report configurations associated with the activated beams of M TRPs are configured with the same PUSCH or PUCCH since the CSI reports may be transmitted jointly.
[0144] In view of the above, the embodiments of the disclosure may enhance performance (in future communication system, e.g., 6G) by enabling joint DL DCI triggering of beam updates and CSI reports. This aligns beam configurations with real-time channel states, boosting spectral efficiency, while strict timing improves reliability by ensuring accurate channel measurements. Flexible configurations adapt to single / multi-TRP scenarios, optimizing resource use and link robustness.
[0145] FIG. 5 illustrates an example of a device 500 that supports the communication related to the superimposed pilot and data transmission in accordance with aspects of the present disclosure. The device 500 may be an example of the terminal device 104 or the network device 102 as described herein. The device 500 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof. The device 500 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 502, a memory 504, a transceiver 506, and, optionally, an I / O controller 508. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0146] The processor 502, the memory 504, the transceiver 506, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 502, the memory 504, the transceiver 506, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0147] In some implementations, the processor 502, the memory 504, the transceiver 506, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 502 and the memory 504 coupled with the processor 502 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 504) .
[0148] For example, the processor 502 may support wireless communication at the device 500 in accordance with examples as disclosed herein. The processor 502 may be configured to operable to support a means for the operation related to ambient internet of things (IoT) device.
[0149] The processor 502 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some implementations, the processor 502 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 502. The processor 502 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 504) to cause the device 500 to perform various functions of the present disclosure.
[0150] The memory 504 may include random access memory (RAM) and read-only memory (ROM) . The memory 804 may store computer-readable, computer-executable code including instructions that, when executed by the processor 502 cause the device 500 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 802 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 504 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0151] The I / O controller 508 may manage input and output signals for the device 500. The I / O controller 508 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 508 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 408 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 808 may be implemented as part of a processor, such as the processor 806. In some implementations, a user may interact with the device 800 via the I / O controller 508 or via hardware components controlled by the I / O controller 408.
[0152] In some implementations, the device 500 may include a single antenna 510. However, in some other implementations, the device 500 may have more than one antenna 510 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 506 may communicate bi-directionally, via the one or more antennas 510, wired, or wireless links as described herein. For example, the transceiver 506 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 506 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 510 for transmission, and to demodulate packets received from the one or more antennas 510. The transceiver 806 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0153] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 310 for transmitting the amplified signal into the air or wireless medium.
[0154] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 810 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0155] FIG. 6 illustrates an example of a processor 600 that supports the operation related to ambient internet of things (IoT) device in accordance with aspects of the present disclosure. The processor 600 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 600 may include a controller 602 configured to perform various operations in accordance with examples as described herein. The processor 600 may optionally include at least one memory 604. Additionally, or alternatively, the processor 600 may optionally include one or more arithmetic-logic units (ALUs) 606. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0156] The processor 600 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 600) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0157] The controller 602 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 600 to cause the processor 900 to support various operations in accordance with examples as described herein. For example, the controller 602 may operate as a control unit of the processor 900, generating control signals that manage the operation of various components of the processor 600. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0158] The controller 602 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 704 and determine subsequent instruction (s) to be executed to cause the processor 600 to support various operations in accordance with examples as described herein. The controller 602 may be configured to track memory address of instructions associated with the memory 604. The controller 602 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 602 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 600 to cause the processor 900 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 602 may be configured to manage flow of data within the processor 600. The controller 602 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 600.
[0159] The memory 604 may include one or more caches (e.g., memory local to or included in the processor 600 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 604 may reside within or on a processor chipset (e.g., local to the processor 600) . In some other implementations, the memory 504 may reside external to the processor chipset (e.g., remote to the processor 600) .
[0160] The memory 604 may store computer-readable, computer-executable code including instructions that, when executed by the processor 600, cause the processor 600 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 602 and / or the processor 600 may be configured to execute computer-readable instructions stored in the memory 604 to cause the processor 600 to perform various functions (e.g., functions or tasks supporting transmit power prioritization) . For example, the processor 600 and / or the controller 602 may be coupled with or to the memory 604, the processor 600, the controller 602, and the memory 604 may be configured to perform various functions described herein. In some examples, the processor 600 may include multiple processors and the memory 604 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0161] The one or more ALUs 606 may be configured to support various operations in accordance with examples as described herein. In some implementation, the one or more ALUs 606 may reside within or on a processor chipset (e.g., the processor 600) . In some other implementations, the one or more ALUs 906 may reside external to the processor chipset (e.g., the processor 600) . One or more ALUs 606 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 606 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 606 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 600 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 606 to handle conditional operations, comparisons, and bitwise operations.
[0162] The processor 600 may support wireless communication in accordance with examples as disclosed herein. The processor 600 may be configured to or operable to support a means for the communication related to ambient internet of things (IoT) device.
[0163] FIG. 7 illustrates a flowchart of a method 700 that supports the operation related to the superimposed pilot and data transmission in accordance with aspects of the present disclosure. The operations of the method 700 may be implemented by a device or its components as described herein. For example, the operations of the method 700 may be performed by the terminal device 104 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0164] At 710, the terminal device 104 receives, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell. At 720, the terminal device 104 transmits, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0165] In some implementations of the method and apparatuses described herein, the terminal device may further receive from the network device a first one or more report configurations comprising the report configuration. A report configuration of the first one or more report configurations is associated with a beam of one or more activated beams, or a report configuration of the first one or more report configurations is associated with the one or more activated beams.
[0166] In some implementations of the method and apparatuses described herein, the report configuration comprises at least one of the following: a first set of reference signals configured for a channel measurement; or a second set of reference signals configured for an interference measurement. A reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams.
[0167] In some implementations of the method and apparatuses described herein, the one or more activated beams are associated with a Control Resource Set (CORESET) pool index of one or more CORESET pool indexes, and / or the one or more activated beams is associated with an indicated beam based on an order or position of the indicated beam among the one or more indicated beams.
[0168] In some implementations of the method and apparatuses described herein, the CSI report is carried in a periodic physical uplink shared channel (PUSCH) . In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates a first time offset. In some implementations of the method and apparatuses described herein, the CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after a physical downlink control channel (PDCCH) carrying the DCI or a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset.
[0169] In some implementations of the method and apparatuses described herein, the CSI report is carried in a physical uplink control channel (PUCCH) . The DCI or the report configuration indicates the following: a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the PUCCH; or a third time offset between a PDSCH scheduled by the DCI and the PUCCH.
[0170] In some implementations of the method and apparatuses described herein, the DCI indicates the third time offset by comprising the following: a first field indicating the third time offset and a time allocation for a second uplink control channel comprising an acknowledge for a PDCCH scheduled by the DCI; or a second field indicting the third offset, wherein the second field is different from the first field.
[0171] In some implementations of the method and apparatuses described herein, the terminal device may further receive, from the network device, second one or more report configurations comprising the report configuration. A report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI.
[0172] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUSCH, the DCI or the report configuration indicates a fourth time offset, and the CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after, by at least the fourth time offset, one of a further PUSCH or a PUCCH comprising an acknowledge for the DCI, or an earliest slot of an indicated beam in the DCI being applied.
[0173] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUCCH. The DCI or the report configuration indicates: a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH; or a sixth time offset between an earliest slot in which the indicated beam in the DCI is applied and the PUCCH.
[0174] In some implementations of the method and apparatuses described herein, the terminal device may further perform a measurement on a reference signal corresponding to the beam not earlier than the indicated beam in the DCI is applied.
[0175] In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates one of the following: a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and the reference signal; or an eighth time offset between a sixth offset between an earliest slot in which the indicated beam in the DCI is applied and the reference signal.
[0176] In some implementations of the method and apparatuses described herein, the DCI comprises a field indicating whether the CSI report is triggered.
[0177] In some implementations of the method and apparatuses described herein, the terminal device transmit the CSI report by the following: determining that the indicated beam in the DCI is associated with the report configuration among a plurality of configurations from the network device.
[0178] In some implementations of the method and apparatuses described herein, a single field in the DCI indicates the following: the CSI report being triggered or not; and a time allocation related to the transmission of the CSI report.
[0179] FIG. 8 illustrates a flowchart of a method 800 that supports the operation related to the superimposed pilot and data transmission in accordance with aspects of the present disclosure. The operations of the method 800 may be implemented by a device or its components as described herein. For example, The operations of the method 800 may be implemented by a network device 102 or its components as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0180] At 810, the network device 102 transmits, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell. At 820, the network device 102 receives, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
[0181] In some implementations of the method and apparatuses described herein, the network device may further transmit to the terminal device a first one or more report configurations comprising the report configuration. A report configuration of the first one or more report configurations is associated with a beam of one or more activated beams; or a report configuration of the first one or more report configurations is associated with the one or more activated beams.
[0182] In some implementations of the method and apparatuses described herein, the report configuration comprises at least one of the following: a first set of reference signals configured for a channel measurement; or a second set of reference signals configured for an interference measurement. A reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams.
[0183] In some implementations of the method and apparatuses described herein, the one or more activated beams are associated with a Control Resource Set (CORESET) pool index of one or more CORESET pool indexes; or the one or more activated beams is associated with an indicated beam based on an order or position of the indicated beam among the one or more indicated beams.
[0184] In some implementations of the method and apparatuses described herein, the CSI report is carried in a periodic physical uplink shared channel (PUSCH) , the DCI or the report configuration indicates a first time offset, and the CSI report is transmitted in a PUSCH occasion of the periodic PUSCH, wherein the PUSCH occasion is after a physical downlink control channel (PDCCH) carrying the DCI or a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset.
[0185] In some implementations of the method and apparatuses described herein, the CSI report is carried in a physical uplink control channel (PUCCH) , and the DCI or the report configuration indicates the following: a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the uplink control channel and the PUCCH; a third time offset between a PDSCH scheduled by the DCI and the PUCCH.
[0186] In some implementations of the method and apparatuses described herein, the DCI indicates the third offset by comprising the following: a first field indicating the third time offset and a time allocation for a second uplink control channel comprising an acknowledge for a PDCCH scheduled by the DCI; or a second field indicting the third offset, wherein the second field is different from the first field.
[0187] In some implementations of the method and apparatuses described herein, the network device may further transmit, to the terminal device, second one or more report configurations comprising the report configuration. A report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI.
[0188] In some implementations of the method and apparatuses described herein, the CSI report is carried in a PUSCH, the DCI or the report configuration indicates a fourth time offset, and the CSI report is transmitted in a PUSCH occasion of the periodic PUSCH, wherein the PUSCH occasion is after, by at least the fourth time offset, one of a further PUSCH or a PUCCH comprising an acknowledge for the DCI, or the earliest slot of an indicated beam in the DCI being applied.
[0189] In some implementations of the method and apparatuses described herein, the CSI report is carried in a uplink control channel, and the DCI or the report configuration indicates: a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH; or a sixth time offset between the earliest slot in which the indicated beam in the DCI is applied and the PUCCH.
[0190] In some implementations of the method and apparatuses described herein, the DCI or the report configuration indicates one of the following: a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and a reference signal; or an eighth time offset between the earliest slot in which the indicated beam in the DCI is applied and a reference signal.
[0191] In some implementations of the method and apparatuses described herein, the DCI comprises a field indicating whether the CSI report is triggered.
[0192] In some implementations of the method and apparatuses described herein, the CSI report is received based on that the beam is associated with the report configuration.
[0193] In some implementations of the method and apparatuses described herein, a single field in the DCI indicates the following: the CSI report being triggered or not; and a time offset related to the transmission of the CSI report.
[0194] It should be noted that the methods described herein describes possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0195] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
[0196] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0197] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
[0198] As used herein, including in the claims, an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.
[0199] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A terminal device comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:receive, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell; andtransmit, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.2.The terminal device of claim 1, wherein the processor is further configured to receive from the network device a first one or more report configurations comprising the report configuration, and wherein one of the following:a report configuration of the first one or more report configurations is associated with a beam of one or more activated beams; ora report configuration of the first one or more report configurations is associated with the one or more activated beams.3.The terminal device of claim 1, wherein the report configuration comprises at least one of the following:a first set of reference signals configured for a channel measurement; ora second set of reference signals configured for an interference measurement,wherein a reference signal of the first set of reference signal or the second set of resources is associated with a beam of one or more activated beams.4.The terminal device of claim 2 or 3, wherein at least one of the following:the one or more activated beams are associated with a Control Resource Set (CORESET) pool index of one or more CORESET pool indexes; orthe one or more activated beams is associated with an indicated beam based on an order or position of the indicated beam among the one or more indicated beams.5.The terminal device of claim 2, wherein:the CSI report is carried in a periodic physical uplink shared channel (PUSCH) ,the DCI or the report configuration indicates a first time offset, andthe CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after a physical downlink control channel (PDCCH) carrying the DCI or a physical downlink shared channel (PDSCH) scheduled by the DCI by at least the first time offset.6.The terminal device of claim 2, wherein the CSI report is carried in a physical uplink control channel (PUCCH) , and wherein the DCI or the report configuration indicates the following:a second time offset between a physical downlink control channel (PDCCH) carrying the DCI and the PUCCH; ora third time offset between a PDSCH scheduled by the DCI and the PUCCH.7.The terminal device of claim 6, wherein the DCI indicates the third time offset by comprising the following:a first field indicating the third time offset and a time allocation for a second uplink control channel comprising an acknowledge for a PDCCH scheduled by the DCI; ora second field indicting the third offset, wherein the second field is different from the first field.8.The terminal device of claim 1, wherein the processor is further configured to:receive, from the network device, second one or more report configurations comprising the report configuration,wherein a report configuration of the second one or more report configurations is associated with an indicated beam of one or more indicated beams in the DCI.9.The terminal device of claim 8, wherein:the CSI report is carried in a PUSCH,the DCI or the report configuration indicates a fourth time offset, andthe CSI report is transmitted in an earliest PUSCH occasion of the periodic PUSCH, which is after, by at least the fourth time offset, one of a further PUSCH or a PUCCH comprising an acknowledge for the DCI, or an earliest slot of an indicated beam in the DCI being applied.10.The terminal device of claim 8, wherein the CSI report is carried in a PUCCH, and wherein the DCI or the report configuration indicates:a fifth time offset between a PUSCH or a further PUCCH comprising an acknowledge for the DCI and the PUCCH; ora sixth time offset between an earliest slot in which the indicated beam in the DCI is applied and the PUCCH.11.The terminal device of claim 8, wherein the processor is further caused to perform a measurement on a reference signal corresponding to the beam not earlier than the indicated beam in the DCI is applied.12.The terminal device of claim 11, wherein the DCI or the report configuration indicates one of the following:a seventh time offset between a PUSCH or PUCCH comprising an acknowledge for the DCI and the reference signal; oran eighth time offset between a sixth offset between an earliest slot in which the indicated beam in the DCI is applied and the reference signal.13.The terminal device of claim 1, wherein the DCI comprises a field indicating whether the CSI report is triggered.14.The terminal device of claim 1, wherein the processor is configured to transmit the CSI report by the following:determining that the indicated beam in the DCI is associated with the report configuration among a plurality of configurations from the network device.15.The terminal device of claim 1, wherein a single field in the DCI indicates the following:the CSI report being triggered or not; anda time allocation related to the transmission of the CSI report.16.A network device comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:transmit, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell; andreceive, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.17.A processor for wireless communication, comprising:at least one memory; anda controller coupled with the at least one memory and configured to cause the controller to:receive, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell; andtransmit, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.18.A processor for wireless communication, comprising:at least one memory; anda controller coupled with the at least one memory and configured to cause the controller to:transmit, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell; andreceive, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.19.A method performed by a terminal device, the method comprising:receiving, from a network device, downlink control information (DCI) related to updating an indicated beam of one or more indicated beams in a serving cell; andtransmitting, to the network device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.20.A method performed by a network device, the method comprising:transmitting, to a terminal device, downlink control information (DCI) related to updating an indicated beam in a serving cell; andreceiving, from the terminal device, a channel state information (CSI) report based on the DCI, wherein the CSI report is determined based on a report configuration and is associated with the indicated beam.
Citation Information
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