Group-based beam report
The group-based beam report system addresses the inefficiency of existing systems by supporting multiple TRPs with optimized resource sets and indicators, reducing overhead and enhancing communication efficiency in wireless communications.
Patent Information
- Application Number
- PCT/CN2025/076026
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2025-12-04
AI Technical Summary
Existing wireless communications systems lack a beam report mechanism that supports more than 2 transmission-reception points (TRPs), leading to inefficiencies and increased overhead.
A group-based beam report system for UE and base station that allows for enhanced communication with more than 2 TRPs, involving the transmission and reception of resource sets or subsets, with indicators for TRP combinations and beam qualities, optimized for joint or simultaneous downlink and uplink transmissions.
The solution reduces overhead and enhances communication efficiency by enabling simultaneous joint or uplink transmissions with multiple TRPs, improving the group-based beam report for wireless communications systems.
Smart Images

Figure CN2025076026_04122025_PF_FP_ABST
Abstract
Description
GROUP-BASED BEAM REPORTTECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to a user equipment (UE) , a base station, processors, methods and computer readable media for group-based beam report.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 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] More than 2 transmission-reception points (TRPs) may serve a UE simultaneously. However, there is no beam report that supports for more than 2 TRPs. Therefore, enhanced group-based beam report is needed for more than 2 TRPs scenario.SUMMARY
[0004] The present disclosure relates to a UE, a base station, processors, methods and computer readable media for group-based beam report. With the UE, base station, processors and methods, group-based beam report for more than 2 TRPs is enhanced, especially for overhead reduction.
[0005] Some implementations of a UE described herein may include a processor and a transceiver coupled to the processor, wherein the processor is configured to: receive, from a base station via the transceiver, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and transmit, to the base station via the transceiver, the group-based beam report in an uplink (UL) channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0006] In some implementations, each of the at least one TRP combination indicates N reference signals (RSs) selected from N resource sets or subsets of the M resource sets or subsets respectively, wherein N is smaller or equal to M.
[0007] In some implementations, the group-based beam report is configured for joint downlink (DL) and UL transmission, the N RSs are capable for simultaneous joint DL and UL transmission. In some implementations, the group-based beam report is configured for only UL transmission, the N RSs are capable for simultaneous UL transmission.
[0008] In some implementations, the UE transmits the group-based beam report based on an event instance is satisfied. In some implementations, the UE transmits the group-based beam report based on an event instance is satisfied with a number of times. In some implementations, the UE transmits the group-based beam report based on an event instance is satisfied with a number of times within a time window.
[0009] In some implementations, the event instance comprises that measurement results of qualities of at least two RSs from different resource sets or subsets of the M resource sets or subsets is higher than or equal to a first threshold.
[0010] In some implementations, the group-based beam report is configured for joint DL and UL transmission, the at least two RSs are capable for simultaneous joint DL and UL transmission. In some implementations, the group-based beam report is configured for only UL transmission, the at least two RSs are capable for simultaneous UL transmission.
[0011] In some implementations, the event instance further comprises that a difference of the measurement results of the qualities of the at least two RSs is lower than or equal to a second threshold.
[0012] In some implementations, the group-based beam report further comprises: at least one index of at least one beam for each group in each of the at least one TRP combination, at least one quality of the at least one beam, at least one indicator indicating whether an event instance is satisfied for each group in each of the at least one TRP combination, or any combination thereof.
[0013] In some implementations, a payload size of the group-based beam report is fixed.
[0014] In some implementations, the group-based beam report comprises a first part and a second part. The first part comprises: the indicator of the first TRP combination, at least one index of at least one beam for a group in the first TRP combination, at least one quality of the at least one beam, an indicator of number of groups for each of the at least one TRP combination in the second part, or any combination thereof. The second part comprises at least one index of at least one beam for each group in each of the at least one TRP combination and at least one quality of the at least one beam.
[0015] In some implementations, a payload size of the second part of the group-based beam report is variable.
[0016] In some implementations, the group-based beam report is configured to be periodic, semi-persistent, aperiodic, or UE initiated.
[0017] In some implementations, a quality of a beam in the first TRP combination is largest among all reported beams.
[0018] Some implementations of a base station described herein may include a processor and a transceiver coupled to the processor, wherein the processor is configured to: transmit, to a UE via the transceiver, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and receive, from the UE via the transceiver, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0019] In some implementations, each of the at least one TRP combination indicates N RSs selected from N resource sets or subsets of the M resource sets or subsets respectively, wherein N is smaller or equal to M.
[0020] In some implementations, the group-based beam report is configured for joint DL and UL transmission, the N RSs are capable for simultaneous joint DL and UL transmission. In some implementations, the group-based beam report is configured for only UL transmission, the N RSs are capable for simultaneous UL transmission.
[0021] In some implementations, the group-based beam report is triggered based on an event instance is satisfied. In some implementations, the group-based beam report is triggered based on an event instance is satisfied with a number of times. In some implementations, the group-based beam report is triggered based on an event instance is satisfied with a number of times within a time window.
[0022] In some implementations, the event instance comprises that measurement results of qualities of at least two RSs from different resource sets or subsets of the M resource sets or subsets is higher than or equal to a first threshold.
[0023] In some implementations, the group-based beam report is configured for joint DL and UL transmission, the at least two RSs are capable for simultaneous joint DL and UL transmission. In some implementations, the group-based beam report is configured for only UL transmission, the at least two RSs are capable for simultaneous UL transmission.
[0024] In some implementations, the event instance further comprises that a difference of the measurement results of the qualities of the at least two RSs is lower than or equal to a second threshold.
[0025] In some implementations, the group-based beam report further comprises: at least one index of at least one beam for each group in each of the at least one TRP combination, at least one quality of the at least one beam, at least one indicator indicating whether an event instance is satisfied for each group in each of the at least one TRP combination, or any combination thereof.
[0026] In some implementations, a payload size of the group-based beam report is fixed.
[0027] In some implementations, the group-based beam report comprises a first part and a second part. The first part comprises: the indicator of the first TRP combination, at least one index of at least one beam for a group in the first TRP combination, at least one quality of the at least one beam, an indicator of number of groups for each of the at least one TRP combination in the second part, or any combination thereof. The second part comprises at least one index of at least one beam for each group in each of the at least one TRP combination and at least one quality of the at least one beam.
[0028] In some implementations, a payload size of the second part of the group-based beam report is variable.
[0029] In some implementations, the group-based beam report is configured to be periodic, semi-persistent, aperiodic, or UE initiated.
[0030] In some implementations, a quality of a beam in the TRP combination N is largest among all reported beams.
[0031] Some implementations of a method described herein may include: receiving, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and transmitting, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0032] Some implementations of a method described herein may include: transmitting, to a UE, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and receiving, from the UE, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0033] Some implementations of a processor described herein may include at least one memory and a controller coupled with the at least one memory and configured to cause the controller to: receive, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and transmit, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0034] Some implementations of a processor described herein may include at least one memory and a controller coupled with the at least one memory and configured to cause the controller to: transmit, to a UE, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and receive, from the UE, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0035] Some implementations of a computer readable medium described herein may include instructions stored thereon. The instructions, when executed on at least one processor, cause the at least one processor to: receive, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and transmit, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0036] Some implementations of a computer readable medium described herein may include instructions stored thereon. The instructions, when executed on at least one processor, cause the at least one processor to: transmit, to a UE, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and receive, from the UE, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0037] It is to be understood that the summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Fig. 1 illustrates an example of a wireless communications system for group-based beam report in accordance with aspects of the present disclosure;
[0039] Fig. 2 illustrates a signaling chart illustrating an example of group-based beam report in accordance with aspects of the present disclosure;
[0040] Fig. 3 illustrates an example of group-based beam report in accordance with aspects of the present disclosure;
[0041] Fig. 4 illustrates an example of a device for group-based beam report in accordance with aspects of the present disclosure;
[0042] Fig. 5 illustrates an example of a processor for group-based beam report in accordance with aspects of the present disclosure;
[0043] Fig. 6 illustrates a flowchart of a method for group-based beam report in accordance with aspects of the present disclosure; and
[0044] Fig. 7 illustrates a flowchart of another method for group-based beam report in accordance with aspects of the present disclosure.DETAILED DESCRIPTION
[0045] 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 less than or equal to.
[0046] 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.
[0047] 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.
[0048] 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.
[0049] 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.
[0050] In view of the above, some embodiments of the present disclosure provide a solution for group-based beam report. In this solution, a UE receives, from a base station, M resource sets or subsets for a group-based beam report. M is larger than 2. The UE transmits, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination. With this solution, group-based beam report for more than 2 TRPs is enhanced, especially for overhead reduction.
[0051] Aspects of the present disclosure are described in the context of a wireless communications system.
[0052] Fig. 1 illustrates an example of a wireless communications system 100 for group-based beam report in accordance with aspects of the present disclosure. The wireless communications system 100 may include one at least one of network entities 102 (also referred to as network equipment (NE) ) , one or more terminal devices or 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.
[0053] The network entities 102 may be collectively referred to as network entities 102 or individually referred to as a network entity 102.
[0054] The 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 (BS) , a network element, a radio access network (RAN) node, 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. The network entities 102 may be collectively referred to as network entities 102 or individually referred to as a network entity 102. Hereinafter, some implementations of the present disclosure will be described by taking a base station as an example of the network entity 102. Thus, the network entity 102 may be used interchangeably with the base station 102.
[0055] 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.
[0056] 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.
[0057] 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.
[0058] 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. A UE 104 may be an A-IoT device.
[0059] 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, N3, 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) . A network entity 102 may be a reader for an A-IoT device.
[0060] 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 radio access network (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.
[0061] 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 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) ) .
[0062] 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.
[0063] 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) .
[0064] 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.
[0065] 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 registration management, mobility management, connection management, access authentication / authorization etc. for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
[0066] 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, N3, 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) .
[0067] 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.
[0068] 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.
[0069] 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.
[0070] 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 spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended 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.
[0071] 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 (510 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.
[0072] 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.
[0073] Fig. 2 illustrates a signaling chart illustrating an example process 200 for group-based beam report in accordance with aspects of the present disclosure. The process 200 may involve the UE 104 and the base station 102. For the purpose of discussion, the process 200 will be described with reference to Fig. 1. With the process 200, group-based beam report for more than 2 TRPs is enhanced, especially for overhead reduction.
[0074] As shown in Fig. 2, the base station 102 may transmit 210, to the UE 104, M resource sets or subsets for a group-based beam report. Accordingly, the UE 104 may receive the M resource sets or subsets from the base station 102. M may be larger than 2. It is to be understood that the group-based beam report is for more than 2 TRPs scenario.
[0075] In some implementations, the UE 104 may be served by M TRPs. In some implementations, the M resource sets may be configured for the M TRPs. Each resource set may be associated with one TRP of the M TRPs respectively. In some other implementations, a resource set comprising the M resource subset may be configured for the M TRPs. Each resource subset may be associated with one TRP of the M TRPs respectively.
[0076] As shown in Fig. 2, the UE 104 may transmit 220, to the base station 102, the group-based beam report in an UL channel. Accordingly, the base station 102 may transmit the group-based beam report to the UE 104. The group-based beam report may comprise an indicator of a first TRP combination among at least one TRP combination.
[0077] In some implementations, an RRC parameter may be configured to indicate that the beams in a group reported in the group-based beam report are capable for simultaneous joint DL and UL transmission or only simultaneous UL transmission, similar to an RRC parameter in 3GPP technical specification release 18.
[0078] In some implementations, each of the at least one TRP combination indicates N RSs selected from N resource sets or subsets of the M resource sets or subsets respectively, wherein 2<=N<=M. For example, N may be 2, 3, …, M.
[0079] In some implementations where the group-based beam report is configured for joint DL and UL transmission, the N RSs may be capable for simultaneous joint DL and UL transmission. In some implementations where the group-based beam report is configured for only UL transmission, the N RSs may be capable for simultaneous UL transmission.
[0080] Each of the at least one TRP combination may indicated by the number of the RSs in the TRP combination, i.e. TRP combination N. In some implementations, the at least one TRP combination for the M TRPs may be configured, for example, by an RRC. In this case, the number of the configured TRP combination may be noted as A. For example, if M=4 and the at least one TRP combination is configured as {2, 4} , it means that the at least one TRP combination may be TRP combination 2 and TRP combination 4. In some other implementations, there is no configuration (e.g. RRC) for the at least one TRP combination, which means a default TRP combination (TRP combination M) or all the TRP combinations are supported. For example, if M=4, the at least one TRP combination may be TRP combination 2 and TRP combination 3 and TRP combination 4, or the at least one TRP combination is only TRP combination 4. If only one TRP combination is supported, then TRP combination index is not need to be reported. In some implementations, restriction of RS combination may be configured, for example, in a group-based beam report configuration. The restriction of RS combination may indicate at least one RS combination that are not allowed to be reported.
[0081] In some implementations, a quality of a beam in the first TRP combination is largest among all reported beams.
[0082] In some implementations, the group-based beam report may further comprise: at least one index of at least one beam for each group in each of the at least one TRP combination, at least one quality of the at least one beam, at least one indicator indicating whether an event instance is satisfied for each group in each of the at least one TRP combination, or any combination thereof.
[0083] In some implementations, a payload size of the group-based beam report may be fixed.
[0084] In some implementations, K RSs may be configured in each of the M resource sets (subsets) , then a total number of RSs in the group-based beam report may be M*K. Therefore, a bit width of a beam index in the group-based beam report may be ceil (log2 (M*K) ) . Besides, assume a full quality of a RS (beam) is J, and a differential quality of a RS (beam) is G. It should be noted that the quality of a RS (beam) may be L1-reference signal received power (RSRP) or L1-SINR or other metrics. For each TRP combination, a number (L) of groups of RSs may be reported where the RSs in each group may be capable for simultaneous joint DL and UL transmission if JointULandDL is configured or capable for simultaneous UL transmission if OnlyUL is configured. If the TRP combinations are configured by RRC and a number of the TRP combinations is A, then a bit width of an indicator of a TRP combination is ceil (log2A) ; otherwise, the bit width of the indicator is ceil (log2 (M-1) ) .
[0085] The payload size of the group-based beam report may include three parts. A first part may be the indicator of the first TRP combination comprising a first reported beam, a second part may be the indicator of beam indices for each group in each TRP combination, and a third part may be a full quality of the first reported beam and differential qualities of the remaining reported beam. The first reported beam may be a beam with largest quality. Since overhead of the group-based beam report for more than 2 TRPs are large, therefore, differential report may reduce the overhead.
[0086] If no TRP combination is configured and M-1 TRP combinations are determined, then the whole payload size of the group-based beam report may be shown as below: ceil (log2 (M-1) ) + (M+2) * (M-1) / 2*L*ceil (log2 (M*K) ) + (J + ( (M+2) * (M-1) / 2*L-1) *G) wherein ceil (log2 (M-1) ) is for the indicator of the first TRP combination, (M+2) * (M-1) / 2*L*ceil (log2 (M*K) ) is for the reported beam indices, and (J + ( (M+2) * (M-1) / 2*L-1) *G) is for qualities of reported beams.
[0087] Additionally, the payload size may also add L (M-1) bits for the indicator indicating whether an event instance is satisfied for each group in each of the at least one TRP combination.
[0088] Alternatively, the payload size of the indicator of the first TRP combination may be ceil (log2M) if no TRP combination is configured and M-1 TRP combinations are default, or the payload size of the indicator may be 0 bit if no TRP combination is configured and only one TRP combination (TRP combination M) is default or the payload size of the indicator may be ceil (log2 (A+1) ) if A TRP combinations are configured, as for network triggered reporting, there may be no beam which satisfy a condition configured by RRC to be report, so that one more indication value may be needed.
[0089] Table 1 shows an example of report format of the group-based beam report if no TRP combination is configured. Table 1
[0090] In some implementations, if no differential report is used, then the indicator of the first TRP combination is not needed, and all the qualities of reported beams are reported as J bits. Therefore, if no TRP combination is configured and M-1 TRP combinations are determined, then the whole payload size of the group-based beam report is shown as below: (M+2) * (M-1) / 2*L*ceil (log2 (M*K) ) + (M+2) * (M-1) / 2*L*J wherein (M+2) * (M-1) / 2*L*ceil (log2 (M*K) ) is for reported beam indices, (M+2) * (M-1) / 2*L*J is for qualities of reported beams.
[0091] It should be noted that the reported RSs (beams) may be selected according to UE implementation. And if the group-based beam report is UE initiated, then at least one group of RSs of one TRP combination which satisfies the event is reported. And the remaining reported RSs (beams) which do not satisfy the event may be reported too since the payload size is fixed.
[0092] Fig. 3 illustrates an example of group-based beam report with fixed payload size and differential report in accordance with aspects of the present disclosure. As shown in Fig. 3, M=4 TRPs, TRP combination 2, TRP combination 3 and TRP combination 4 are supported. L=2 groups for each TRP combination, and K=4 RSs in each resource set associated with each TRP. J=7 which is the full quality bit width while G=4 which is the differential quality bit width. Two groups are reported for TRP combination 2, TRP combination 3 and TRP combination 4 respectively. Assume a quality of RS10 in TRP combination 3 is the largest, then the indicator of the first TRP combination has (ceil (log2 (M-1) ) ) =2 bits, the beam index indicator has (4+2) * (4-1) / 2*2*4=72 bits, and the qualities of all the reported RSs has 7+ (18-1) *4=75bits. Therefore, the whole payload size is 2+72+75=149 bits.
[0093] It is to be understood that the fixed payload size is large if the TRP number is large. However, not each TRP combination can find a group of beams to be simultaneous DL / UL or only UL transmission with multiple TRPs. Therefore, in some implementations, only the groups of beams which can be used for simultaneous DL / UL or only UL transmission with multiple TRPs are reported. If the group-based beam report is UE initiated, then all the reported group of beams should satisfy the event (s) . If the group-based beam report is not UE initiated, then a threshold may be configured in the group-based beam report configuration that all the reported beam qualities in a group should be not lower than the threshold.
[0094] In some implementations, the group-based beam report may comprise a first part and a second part. The first part may comprise the indicator of the first TRP combination.
[0095] The first part may comprise at least one index of at least one beam for a group in the first TRP combination and at least one quality of the at least one beam. In some implementations, payload size of the first part may comprise bits for M indices of beams and M corresponding beam qualities. If the indicator of the first TRP combination indicates TRP combination N (N<=M) , then the N reported beams and N reported beam qualities in the first part are valid, while the remaining (M-N) reported beams and (M-N) reported beam qualities are invalid which don’ t need to be interpreted. In some implementations, the at least one quality of the at least one beam may comprise a full quality of a first reported beam and differential qualities of remaining reported beams.
[0096] The first part may comprise an indicator of number of groups for each of the at least one TRP combination in the second part. Assume the maximum number of groups for each of the at least one TRP combination is L, then bit width of the indicator of the number of groups is ceil (log2 (L+1) ) . If the TRP combination is not configured, then M-1 TRP combinations are determined, or 1 TRP combination is determined. If the TRP combination is configured, the number of TRP combinations is A (A<= (M-1) ) .
[0097] If no TRP combination is configured and M-1 TRP combinations are determined, then the whole payload size of the group-based beam report is shown as below: ceil (log2 (M-1) ) + M*ceil (log2 (M*K) ) + (J + (M-1) *G) + (M-1) *ceil (log2 (L+1) ) wherein ceil (log2 (M-1) ) is for the indicator of the first TRP combination, M*ceil (log2 (M*K) ) is for the reported beam indices, (J + (M-1) *G) is for the qualities of reported beams, and (M-1) *ceil (log2 (L+1) ) is for the number of reported groups.
[0098] Table 2 shows an example of the report format of the first part of group-based beam report if no TRP combination is configured. Table 2
[0099] If TRP combination is configured, and the maximum index of TRP combination is B and the number of TRP combinations is A, then the whole payload size of the group-based beam report is shown as below: ceil (log2 (A) ) + B*ceil (log2 (M*K) ) + (J + (B-1) *G) + A*ceil (log2 (L+1) ) wherein ceil (log2 (A) ) is for the indicator of the first TRP combination, B*ceil (log2 (M*K) ) is for the reported beam indices, (J + (B-1) *G) is for qualities of reported beams, and A*ceil (log2 (L+1) ) is for the number of reported groups.
[0100] The second part of the group-based beam report may comprise at least one index of at least one beam for each group in each of the at least one TRP combination and at least one quality of the at least one beam. In some implementations, the at least one quality may be differential quality. In some implementations, a payload size of the second part of the group-based beam report may be variable and may be determined by the first part.
[0101] Assume a group number for TRP combination i (i=2, …, M) is Li which can be zero, then the whole payload size is shown as: (L2*2 +…Li*i +…LM*M) *ceil (log2 (M*K) ) + (L2*2 +…Li*i +…LM*M) *G
[0102] Table 3 shows an example of format of second part of the group-based beam report. Table 3
[0103] In some implementations, the group-based beam report may be configured to be periodic, semi-persistent, aperiodic, or UE initiated. In some implementations, the group-based beam report may be triggered by the base station 102, and configured to be periodic, semi-persistent, or aperiodic. In some implementations, the beam report procedure may reuse 5G specification, where the group-based beam report may be transmitted in a PUCCH resource or a PUSCH.
[0104] In some other implementations where the group-based beam report is UE initiated, the group-based beam report may be configured with a mode type, which may be Mode A or Mode B. In Mode A, a first UL channel such as PUCCH resource which is configured by an RRC may be transmitted firstly if an event is triggered to request a DCI to schedule a PUSCH for the beam report transmission. In Mode B, a first UL channel such as PUCCH resource which is configured by an RRC may be transmitted firstly if the event is triggered to notify a second UL channel such as PUSCH which is configured by an RRC will transmit a beam report later. In some implementations, the UE initiated group-based beam report may be supported in 6G, while only gNB controlled group-based beam report is supported in 5G specification. In this way, report overhead may be reduced.
[0105] In some implementations, the UE 104 may transmit the group-based beam report based on an event instance is satisfied. In some implementations, the UE 104 may transmit the group-based beam report based on an event instance is satisfied with a number of times. In some implementations, the UE 104 may transmit the group-based beam report based on an event instance is satisfied with a number of times within a time window.
[0106] In some implementations, the number of times and / or the time window may be configured in a beam report configuration. In some implementations, if the number of times and / or the time window is configured, the group-based beam report is triggered based on an event instance is satisfied with a number of times and optionally within a time window. In other words, triggering events may be based on multiple shots measurement. If the number of times and the time window is not configured, the number of times may be considered as 1 by default. That is, the group-based beam report is triggered based on an event instance is satisfied. In other words, triggering events may be based on one shot measurement.
[0107] In some implementations, the event instance may comprise that measurement results of qualities of at least two RSs from different resource sets or subsets of the M resource sets or subsets is higher than or equal to a first threshold. The first threshold may be pre-configured.
[0108] In some implementations where the group-based beam report is configured for joint DL and UL transmission, the at least two RSs may be capable for simultaneous joint DL and UL transmission. In some implementations where the group-based beam report is configured for only UL transmission, the at least two RSs may be capable for simultaneous UL transmission.
[0109] In some implementations, the event instance may further comprise that a difference of the measurement results of the qualities of the at least two RSs is lower than or equal to a second threshold. The second threshold may be pre-configured.
[0110] An example event 1 may be: measurement results of qualities of at least two RSs from different resource sets (subsets) are higher than or equal to a first threshold, and the at least two RSs are capable for simultaneous joint DL and UL transmission if JointULandDL is configured or the at least two RSs are capable for simultaneous UL transmission if OnlyUL is configured.
[0111] An example event 2 may be: measurement results of qualities of at least two RSs from different resource sets (subsets) are higher than or equal to a first threshold, a difference of the qualities of the at least two RSs is lower than a second threshold, and the at least two RSs are capable for simultaneous joint DL and UL transmission if JointULandDL is configured or the at least two RSs are capable for simultaneous UL transmission if OnlyUL is configured.
[0112] So far, solutions of group-based beam report are described in connection with the process 200. It is to be noted that operations or steps described in the process 200 may be carried out separately or in any suitable combinations.
[0113] Fig. 4 illustrates an example of a device 400 for group-based beam report in accordance with aspects of the present disclosure. The device 400 may be an example of a base station 102 or a UE 104 as described herein. The device 400 may support wireless communication with one or more base stations 102, UEs 104, or any combination thereof. The device 400 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 402, a memory 404, a transceiver 406, and, optionally, an I / O controller 408. 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) .
[0114] The processor 402, the memory 404, the transceiver 406, 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 402, the memory 404, the transceiver 406, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0115] In some implementations, the processor 402, the memory 404, the transceiver 406, 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 402 and the memory 404 coupled with the processor 402 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 402, instructions stored in the memory 404) .
[0116] For example, the processor 402 may support wireless communication at the device 400 in accordance with examples as disclosed herein. In some implementations where the device 400 is used to implement a UE (e.g., the UE 104) , the processor 402 may be configured to operable to support a means for performing the following:
[0117] In some implementations where the device 400 is used to implement a base station (e.g., the base station 102) , the processor 402 may be configured to operable to support a means for performing the following:
[0118] The processor 402 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 402 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 402. The processor 402 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 404) to cause the device 400 to perform various functions of the present disclosure.
[0119] The memory 404 may include random access memory (RAM) and read-only memory (ROM) . The memory 404 may store computer-readable, computer-executable code including instructions that, when executed by the processor 402 cause the device 400 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 402 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 404 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.
[0120] The I / O controller 408 may manage input and output signals for the device 400. The I / O controller 408 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 408 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 408 may be implemented as part of a processor, such as the processor 406. In some implementations, a user may interact with the device 400 via the I / O controller 408 or via hardware components controlled by the I / O controller 408.
[0121] In some implementations, the device 400 may include a single antenna 410. However, in some other implementations, the device 400 may have more than one antenna 410 (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 406 may communicate bi-directionally, via the one or more antennas 410, wired, or wireless links as described herein. For example, the transceiver 406 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 406 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 410 for transmission, and to demodulate packets received from the one or more antennas 410. The transceiver 406 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0122] 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 410 for transmitting the amplified signal into the air or wireless medium.
[0123] 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 410 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.
[0124] Fig. 5 illustrates an example of a processor 500 for group-based beam report in accordance with aspects of the present disclosure. The processor 500 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 500 may include a controller 502 configured to perform various operations in accordance with examples as described herein. The processor 500 may optionally include at least one memory 504, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 500 may optionally include one or more arithmetic-logic units (ALUs) 506. 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) .
[0125] The processor 500 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 500) 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) .
[0126] The controller 502 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 500 to cause the processor 500 to support various operations in accordance with examples as described herein. For example, the controller 502 may operate as a control unit of the processor 500, generating control signals that manage the operation of various components of the processor 500. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0127] The controller 502 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 504 and determine subsequent instruction (s) to be executed to cause the processor 500 to support various operations in accordance with examples as described herein. The controller 502 may be configured to track memory address of instructions associated with the memory 504. The controller 502 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 502 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 500 to cause the processor 500 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 502 may be configured to manage flow of data within the processor 500. The controller 502 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 500.
[0128] The memory 504 may include one or more caches (e.g., memory local to or included in the processor 500 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 504 may reside within or on a processor chipset (e.g., local to the processor 500) . In some other implementations, the memory 504 may reside external to the processor chipset (e.g., remote to the processor 500) .
[0129] The memory 504 may store computer-readable, computer-executable code including instructions that, when executed by the processor 500, cause the processor 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. The controller 502 and / or the processor 500 may be configured to execute computer-readable instructions stored in the memory 504 to cause the processor 500 to perform various functions. For example, the processor 500 and / or the controller 502 may be coupled with or to the memory 504, the processor 500, the controller 502, and the memory 504 may be configured to perform various functions described herein. In some examples, the processor 500 may include multiple processors and the memory 504 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.
[0130] The one or more ALUs 506 may be configured to support various operations in accordance with examples as described herein. In some implementation, the one or more ALUs 506 may reside within or on a processor chipset (e.g., the processor 500) . In some other implementations, the one or more ALUs 506 may reside external to the processor chipset (e.g., the processor 500) . One or more ALUs 506 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 506 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 506 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 506 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 506 to handle conditional operations, comparisons, and bitwise operations.
[0131] The processor 500 may support wireless communication in accordance with examples as disclosed herein. In some implementations where the processor 500 is implemented at a UE (e.g., the UE 104) , the processor 500 may be configured to operable to support a means for performing the following: receiving, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and transmitting, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0132] In some implementations where the processor 500 is implemented at a base station (e.g., the base station 102) , the processor 500 may be configured to operable to support a means for performing the following: transmitting, to a UE, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; and receiving, from the UE, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0133] Fig. 6 illustrates a flowchart of a method 600 for group-based beam report in accordance with aspects of the present disclosure. The operations of the method 600 may be implemented by a device or its components as described herein. For example, the operations of the method 600 may be performed by the UE 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.
[0134] At 610, the method may include receiving, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2. The operations of 610 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 610 may be performed by a device as described with reference to Fig. 1.
[0135] At 620, the method may include transmitting, to the base station, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination. The operations of 620 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 620 may be performed by a device as described with reference to Fig. 1.
[0136] Fig. 7 illustrates a flowchart of a method 700 for group-based beam report in accordance with aspects of the present disclosure. The operations of the method 600 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 base station 102 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.
[0137] At 710, the method may include transmitting, to a UE, M resource sets or subsets for a group-based beam report, wherein M is larger than 2.
[0138] At 720, the method may include receiving, from the UE, the group-based beam report in an UL channel comprising an indicator of a first TRP combination among at least one TRP combination.
[0139] It shall be noted that implementations of the present disclosure which have been described with reference to Figs. 1 to 3 are also applicable to the device 400, the processor 500 as well as the methods 600 and 700.
[0140] It should be noted that the methods described herein describe 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.
[0141] 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.
[0142] 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.
[0143] 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.
[0144] 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.
[0145] 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 user equipment (UE) , comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:receive, from a base station via the transceiver, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; andtransmit, to the base station via the transceiver, the group-based beam report in an uplink (UL) channel comprising an indicator of a first transmission-reception point (TRP) combination among at least one TRP combination.2.The UE of claim 1, wherein each of the at least one TRP combination indicates N reference signals (RSs) selected from N resource sets or subsets of the M resource sets or subsets respectively, wherein N is smaller or equal to M.3.The UE of claim 2, wherein the group-based beam report is configured for joint downlink (DL) and UL transmission, the N RSs are capable for simultaneous joint DL and UL transmission; orwherein the group-based beam report is configured for only UL transmission, the N RSs are capable for simultaneous UL transmission.4.The UE of claim 1, wherein the processor is configured to transmit the group-based beam report based on an event instance is satisfied.5.The UE of claim 4, wherein the processor is configured to transmit the group-based beam report based on an event instance is satisfied with a number of times.6.The UE of claim 5, wherein the processor is configured to transmit the group-based beam report based on an event instance is satisfied with a number of times within a time window.7.The UE of claim 4, wherein the event instance comprises that measurement results of qualities of at least two RSs from different resource sets or subsets of the M resource sets or subsets is higher than or equal to a first threshold.8.The UE of claim 7, wherein the group-based beam report is configured for joint DL and UL transmission, the at least two RSs are capable for simultaneous joint DL and UL transmission; orwherein the group-based beam report is configured for only UL transmission, the at least two RSs are capable for simultaneous UL transmission.9.The UE of claim 7, wherein the event instance further comprises that a difference of the measurement results of the qualities of the at least two RSs is lower than or equal to a second threshold.10.The UE of claim 1, wherein the group-based beam report further comprises at least one of:at least one index of at least one beam for each group in each of the at least one TRP combination, at least one quality of the at least one beam, or at least one indicator indicating whether an event instance is satisfied for each group in each of the at least one TRP combination.11.The UE of claim 10, wherein a payload size of the group-based beam report is fixed.12.The UE of claim 1, wherein the group-based beam report comprises a first part and a second part, wherein the first part comprises at least one of: the indicator of the first TRP combination, at least one index of at least one beam for a group in the first TRP combination, at least one quality of the at least one beam, or an indicator of number of groups for each of the at least one TRP combination in the second part, and wherein the second part comprises at least one index of at least one beam for each group in each of the at least one TRP combination and at least one quality of the at least one beam.13.The UE of claim 12, wherein a payload size of the second part of the group-based beam report is variable.14.The UE of claim 1, wherein the group-based beam report is configured to be periodic, semi-persistent, aperiodic, or UE initiated.15.The UE of claim 1, wherein a quality of a beam in the first TRP combination is largest among all reported beams.16.A base station, comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:transmit, to a user equipment (UE) via the transceiver, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; andreceive, from the UE via the transceiver, the group-based beam report in an uplink (UL) channel comprising an indicator of a first transmission-reception point (TRP) combination among at least one TRP combination.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 base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; andtransmit, to the base station, the group-based beam report in an uplink (UL) channel comprising an indicator of a first transmission-reception point (TRP) combination among at least one TRP combination.18.A method performed by a user equipment (UE) , the method comprising:receiving, from a base station, M resource sets or subsets for a group-based beam report, wherein M is larger than 2; andtransmitting, to the base station, the group-based beam report in an uplink (UL) channel comprising an indicator of a first transmission-reception point (TRP) combination among at least one TRP combination.
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