Resource grouping and reporting in wireless communications
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- ZTE CORP
- Filing Date
- 2023-07-28
- Publication Date
- 2026-06-03
AI Technical Summary
Traditional beam training in wireless communications requires excessive training overhead, measurement power consumption, and processing delay due to brute-force sequential beam searching.
The method involves receiving a reference signal (RS) resource set and an indication of resource grouping from a network device, splitting the RS resource set into multiple resource groups, and reporting measurements and resource indicators to the network device, optimizing beam alignment and reducing training overhead.
This approach reduces training overhead, power consumption, and processing delay by optimizing beam alignment through efficient resource grouping and reporting, thereby improving the overall efficiency of wireless communication.
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Figure CN2023110035_06022025_PF_FP_ABST
Abstract
Description
RESOURCE GROUPING AND REPORTING IN WIRELESS COMMUNICATIONSTECHNICAL FIELD
[0001] This document is directed generally to resource grouping and associated reporting in wireless communications.BACKGROUND
[0002] In wireless communication, the network and user device may adjust their beam directions and achieve alignment during initial access and data transmission in order to maximize beam-forming gain. However, traditional beam training and brute-force sequential beam searching requires excessive training overhead, measurement power consumption, and processing delay. Ways to improve identification of beams for optimal alignment, including those involving communication and reporting of information for beam training, in order to reduce or otherwise improve upon the above mentioned training overhead, power consumption, and processing delay may be desirable.SUMMARY
[0003] This document relates to methods, systems, apparatuses and devices for wireless communication. In some implementations, a method for wireless communication includes: receiving, by a user device from a network device, a reference signal (RS) resource set; receiving, by the user device from the network device, an indication of a resource grouping of the RS resource set; splitting, by the user device, the RS resource set into a plurality of resource groups according to the indication of the resource grouping, the plurality of resource groups comprising a first resource group and a second resource group, wherein the first resource group comprises a first set of one or more resources and the second resource group comprises a second set of one or more resources; and reporting, by the user device, first information and second information to the network device, the first information comprising at least one measurement of the first set of one or more resources, the second information comprising a K-number of resource indicators of a K-number of one or more resources having a K-number of largest measurements.
[0004] In some other implementations, a method for wireless communication includes: transmitting, by a network device to a user device, a reference signal (RS) resource set; transmitting, by the network device to the user device, an indication of a resource grouping of the RS resource set, the indication of the resource grouping used to split the RS resource set into a plurality of resource groups comprising a first resource group of a first set of one or more resources and a second resource group of a second set of one or more resources; and receiving, by the network device from the user device, first information and second information, the first information comprising at least one measurement of the first set of one or more resources of the first resource group, the second information comprising a K-number of resource indicators of a K-number of resources having a K-number of largest measurements.
[0005] In some other implementations, a device, such as a network device, is disclosed. The device may include one or more processors and one or more memories, wherein the one or more processors are configured to read computer code from the one or more memories to implement any of the methods above.
[0006] In yet some other implementations, a computer program product is disclosed. The computer program product may include a non-transitory computer-readable program medium with computer code stored thereupon, the computer code, when executed by one or more processors, causing the one or more processors to implement any of the methods above.
[0007] The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 shows a block diagram of an example of a wireless communication system.
[0009] FIG. 2 shows a diagram of a transmission reception point and a user device performing beam-based uplink and downlink transmission.
[0010] FIG. 3 shows a flow chart of a method for wireless communication.
[0011] FIG. 4 shows a flow chart of another method for wireless communication.
[0012] FIG. 5 shows a diagram of artificial intelligence / machine learning based spatial domain beam prediction.
[0013] FIG. 6 shows a diagram of an example grouping of a first resource group according to a number M indicated to a user device.
[0014] FIG. 7 shows a diagram of an example grouping of a first resource group according to an interval number N indicated to a user device.
[0015] FIG. 8 shows a diagram of example report quantities and length, for a configuration of four resources in a first resource group of a resource set and twenty resources in the resource set.
[0016] FIG. 9 shows a diagram of another example of report quantities and length, for a configuration of twenty resources in a resource set.
[0017] FIG. 10 shows a timing diagram of an example of a channel state information reference signal (CSI-RS) resource configuration, where a number of repetitions is two.
[0018] FIG. 11 shows a timing diagram of another CSI-RS resource configuration, where the number of repetitions is two.DETAILED DESCRIPTION
[0019] The present description describes various embodiments of systems, apparatuses, devices, and methods for wireless communications related to resource grouping and associated reporting for wireless communications.
[0020] FIG. 1 shows a diagram of an example wireless communication system 100 including a plurality of communication nodes (or just nodes) that are configured to wirelessly communicate with each other. In general, the communication nodes include at least one user device 102 and at least one network device 104. The example wireless communication system 100 in FIG. 1 is shown as including two user devices 102, including a first user device 102 (1) and a second user device 102 (2) , and one device 104. However, various other examples of the wireless communication system 100 that include any of various combinations of one or more user devices 102 and / or one or more network devices 104 may be possible.
[0021] In general, a user device as described herein, such as the user device 102, may include a single electronic device or apparatus, or multiple (e.g., a network of) electronic devices or apparatuses, capable of communicating wirelessly over a network. A user device may comprise or otherwise be referred to as a user terminal, a user terminal device, or a user equipment (UE) . Additionally, a user device may be or include, but not limited to, a mobile device (such as a mobile phone, a smart phone, a smart watch, a tablet, a laptop computer, vehicle or other vessel (human, motor, or engine-powered, such as an automobile, a plane, a train, a ship, or a bicycle as non-limiting examples) or a fixed or stationary device, (such as a desktop computer or other computing device that is not ordinarily moved for long periods of time, such as appliances, other relatively heavy devices including Internet of things (IoT) , or computing devices used in commercial or industrial environments, as non-limiting examples) . In various embodiments, a user device 102 may include transceiver circuitry 106 coupled to an antenna 108 to effect wireless communication with the network device 104. The transceiver circuitry 106 may also be coupled to a processor 110, which may also be coupled to a memory 112 or other storage device. The memory 112 may store therein instructions or code that, when read and executed by the processor 110, cause the processor 110 to implement various ones of the methods described herein.
[0022] Additionally, in general, a network device as described herein, such as the network device 104, may include a single electronic device or apparatus, or multiple (e.g., a network of) electronic devices or apparatuses, and may comprise one or more wireless access nodes, base stations, or other wireless network access points capable of communicating wirelessly over a network with one or more user devices and / or with one or more other network devices 104. For example, the network device 104 may comprise a 4G LTE base station, a 5G NR base station, a 5G central-unit base station, a 5G distributed-unit base station, a next generation Node B (gNB) , an enhanced Node B (eNB) , or other similar or next-generation (e.g., 6G) base stations, in various embodiments. A network device 104 may include transceiver circuitry 114 coupled to an antenna 116, which may include an antenna tower 118 in various approaches, to effect wireless communication with the user device 102 or another network device 104. The transceiver circuitry 114 may also be coupled to one or more processors 120, which may also be coupled to a memory 122 or other storage device. The memory 122 may store therein instructions or code that, when read and executed by the processor 120, cause the processor 120 to implement one or more of the methods described herein.
[0023] In various embodiments, two communication nodes in the wireless communication system 100-such as a user device 102 and a network device 104, two user devices 102 without a network device 104, or two network devices 104 without a user device 102-may be configured to wirelessly communicate with each other in or over a mobile network and / or a wireless access network according to one or more standards and / or specifications. In general, the standards and / or specifications may define the rules or procedures under which the communication nodes can wirelessly communicate, which, in various embodiments, may include those for communicating in millimeter (mm) -Wave bands, and / or with multi-antenna schemes and beam-forming functions. In addition or alternatively, the standards and / or specifications are those that define a radio access technology and / or a cellular technology, such as Fourth Generation (4G) Long Term Evolution (LTE) , Fifth Generation (5G) New Radio (NR) , or New Radio Unlicensed (NR-U) , as non-limiting examples.
[0024] Additionally, in the wireless communication system 100, the communication nodes are configured to wirelessly communicate signals between each other. In general, a communication in the wireless communication system 100 between two communication nodes can be or include a transmission or a reception, and is generally both simultaneously, depending on the perspective of a particular node in the communication. For example, for a given communication between a first node and a second node where the first node is transmitting a signal to the second node and the second node is receiving the signal from the first node, the first node may be referred to as a source or transmitting node or device, the second node may be referred to as a destination or receiving node or device, and the communication may be considered a transmission for the first node and a reception for the second node. Of course, since communication nodes in a wireless communication system 100 can both send and receive signals, a single communication node may be both a transmitting / source node and a receiving / destination node simultaneously or switch between being a source / transmitting node and a destination / receiving node.
[0025] Also, particular signals can be characterized or defined as either an uplink (UL) signal, a downlink (DL) signal, or a sidelink (SL) signal. An uplink signal is a signal transmitted from a user device 102 to a network device 104. A downlink signal is a signal transmitted from a network device 104 to a user device 102. A sidelink signal is a signal transmitted from a one user device 102 to another user device 102, or a signal transmitted from one network device 104 to another network device 104. Also, for sidelink transmissions, a first / source user device 102 directly transmits a sidelink signal to a second / destination user device 102 without any forwarding of the sidelink signal to a network device 104.
[0026] Additionally, signals communicated between communication nodes in the wireless communication system 100 may be characterized or defined as a data signal or a control signal. In general, a data signal is a signal that includes or carries data, such multimedia data (e.g., voice and / or image data) , and a control signal is a signal that carries control information that configures the communication nodes in certain ways in order to communicate with each other, or otherwise controls how the communication nodes communicate data signals with each other. Also, certain signals may be defined or characterized by combinations of data / control and uplink / downlink / sidelink, including uplink control signals, uplink data signals, downlink control signals, downlink data signals, sidelink control signals, and sidelink data signals.
[0027] For at least some specifications, such as 5G NR, data and control signals are transmitted and / or carried on physical channels. Generally, a physical channel corresponds to a set of time-frequency resources used for transmission of a signal. Different types of physical channels may be used to transmit different types of signals. For example, physical data channels (or just data channels) , also herein called traffic channels, are used to transmit data signals, and physical control channels (or just control channels) are used to transmit control signals. Example types of traffic channels (or physical data channels) include, but are not limited to, a physical downlink shared channel (PDSCH) used to communicate downlink data signals, a physical uplink shared channel (PUSCH) used to communicate uplink data signals, and a physical sidelink shared channel (PSSCH) used to communicate sidelink data signals. In addition, example types of physical control channels include, but are not limited to, a physical downlink control channel (PDCCH) used to communicate downlink control signals, a physical uplink control channel (PUCCH) used to communicate uplink control signals, and a physical sidelink control channel (PSCCH) used to communicate sidelink control signals. As used herein for simplicity, unless specified otherwise, a particular type of physical channel is also used to refer to a signal that is transmitted on that particular type of physical channel, and / or a transmission on that particular type of transmission. As an example illustration, a PDSCH refers to the physical downlink shared channel itself, a downlink data signal transmitted on the PDSCH, or a downlink data transmission. Accordingly, a communication node transmitting or receiving a PDSCH means that the communication node is transmitting or receiving a signal on a PDSCH.
[0028] Additionally, for at least some specifications, such as 5G NR, and / or for at least some types of control signals, a control signal that a communication node transmits may include control information comprising the information necessary to enable transmission of one or more data signals between communication nodes, and / or to schedule one or more data channels (or one or more transmissions on data channels) . For example, such control information may include the information necessary for proper reception, decoding, and demodulation of a data signals received on physical data channels during a data transmission, and / or for uplink scheduling grants that inform the user device about the resources and transport format to use for uplink data transmissions. In some embodiments, the control information includes downlink control information (DCI) that is transmitted in the downlink direction from a network device 104 to a user device 102. In other embodiments, the control information includes uplink control information (UCI) that is transmitted in the uplink direction from a user device 102 to a network device 104, or sidelink control information (SCI) that is transmitted in the sidelink direction from one user device 102 (1) to another user device 102 (2) .
[0029] Additionally, as previously described, each user device 102 and the network device 104 may each include respective antennas 108, 116 to wireless communicate with each other. In order to achieve beam alignment and obtain sufficiently high antenna gain, the user and network devices 102, 104 may perform beam training, and their respective antennas 108, 116 may include antenna arrays with certain numbers of antenna elements (e.g., 1024 antenna elements in some embodiments) multiple-input multiple-output (MIMO) implementation. Such features of the user and network devices 102, 104 may help overcome the challenge of propagation loss induced by high frequencies at which the user and network devices 102, 104 may wirelessly communicate. In addition, the respective transceiver circuitry 106, 114 of the user and network device 102, 104 may include analog phase shifters for implementation of millimeter wave (mmWave) beam forming, which provides a finite number of controllable phases. Additionally, constant modulus constraints may be placed on the antenna elements. Given pre-specified beam patterns, variable-phase-shift-based beam-forming training targets may be used to identify the best pattern for subsequent data transmission generally, such as between one transmission reception point (TRP) and one UE panel for example. FIG. 2 shows a diagram of a TRP 202 and a user device 102 performing beam-based UL and DL transmission. Each of the TRP 202 and the user device 102 may communicate (transmit and / or receive) using one of a plurality of beams. FIG. 2 shows selected Tx / Rx beams for transmission.
[0030] In some embodiments, a user device 102 and a network device 104 may implement a set of beam management procedures for adjusting the beam direction in the high frequency band and maintaining a suitable transmitting and receiving beam pair. The set of beam management procedures may include beam sweeping, beam measurement, beam reporting, and / or beam indication. In some of these embodiments, the user device 102 is configured with at least one resource setting for channel measurement and at least one reporting setting for channel state information (CSI) reporting. Each reporting setting may include the parameters for one CSI reporting band and the CSI related quantities to be reported by the user device 102.
[0031] Additionally, for beam management, the CSI related quantities to be reported by the user device 102 may be indicated by the higher layer parameter report Quantity in the reporting setting and include a CSI-reference signal (RS) resource indicator (CRI) , synchronization signal (SS) / physical broadcast channel (PBCH) Block resource indicator (SSBRI) , Layer 1 (L1) -reference signal receiving power (RSRP) or L1-signal to interference plus noise ratio (SINR) . More specifically, the higher layer parameter reportQuantity can be set to 'cri-RSRP' , 'cri-SINR' , 'ssb-Index-RSRP' , and 'ssb-Index-SINR' . For example, in event that the higher layer parameter reportQuantity is set to 'cri-RSRP' , the user device 102 may report at least one CRI and associated L1-RSRP in a single report for each report setting. In some embodiments, the number of RS resources to be reported is configured by a higher layer (e.g., the second layer or higher) . Also, in some embodiments, the user device 102 may derive the CSI parameters other than the resource indicator (i.e., CRI / SSBRI) conditioned on the reported resource indicator, where the resource indicator k (k ≥ 0) corresponds to the configured (k+1) -th entry of an associated resource in the corresponding resource set for channel measurement.
[0032] In addition, in some embodiments, differential-based reporting may be used for the reporting of L1-RSRP and L1-SINR. For example, for L1-RSRP reporting, if the number of RS resources to be reported per report setting is configured to be one, the reported L1-RSRP value is defined by a 7-bit value in the range [-140, -44] dBm with 1dB step size. In addition or alternatively, if the number of measured RS resources to be reported per report setting is configured to be larger than one, the user device 102 may use differential L1-RSRP based reporting, where the largest measured value of L1-RSRP is quantized to a 7-bit value in the range [-140, -44] dBm with 1dB step size, and the differential L1-RSRP is quantized to a 4-bit value. For at least some of these embodiments, the differential L1-RSRP value may be determined or computed with a 2 dB step size with a reference to the largest measured L1-RSRP value that is part of the same L1-RSRP reporting instance. The bitwidth for CRI, SSBRI, RSRP, and differential RSRP are provided in the following Table 1.
[0033] Table 1: Bitwidths for CRI, SSBRI, RSRP, and Differential RSRP
[0034] In Table 1, the term KCSI-RS is the number of CSI-RS resources in the corresponding resource set, and the term KSSB is the configured number of SS / PBCH blocks in the corresponding resource set for reporting 'ssb-Index-RSRP' . The mapping order of CSI fields of one report for CRI / RSRP or SSBRI / RSRP reporting is provided below in the following Table 2.
[0035] Table 2: Mapping Order of CSI Fields for one report for CRI / RSRP or SSBRI / RSRP
[0036] Additionally, as used herein, the term “beam state” means the same as, is equivalent to, or includes at least one of: a quasi-co-location (QCL) state, a transmission configuration indicator (TCI) state, a spatial relation (also called spatial relation information) , a reference signal (RS) , a spatial filter, and / or a precoding. Furthermore, as used herein, a “beam state” is also called a “beam” .
[0037] Additionally, as used herein, the term “transmit beam” or “Tx beam” mean the same as, are equivalent to, or include at least one of: a QCL state, a transmission configuration indicator (TCI) state, a spatial relation state, a downlink (DL) and / or uplink (UL) reference signal (such as a channel state information reference signal (CSI-RS) ) , a synchronization signal block (SSB) (which is also called SS / physical broadcast channel (PBCH) ) , a demodulation reference signal (DMRS) , a sounding reference signal (SRS) , physical random access channel (PRACH) ) , or Tx spatial filter or Tx precoding.
[0038] Additionally, as used herein, the terms “receive beam” or “Rx beam” mean the same as, are equivalent to, or includes: a QCL state, TCI state, spatial relation state, spatial filter, Rx spatial filter, and / or Rx precoding.
[0039] Additionally, as used herein, the term “beam identification (ID) ” means the same as, is equivalent to, or includes a QCL state index, TCI state index, spatial relation state index, reference signal index, spatial filter index, and / or precoding index.
[0040] Additionally, in some embodiments, a spatial filter may be either user device (UE) -side or network (gNB) -side, and the spatial filter is also called a spatial-domain filter.
[0041] Additionally, in some embodiments, a “spatial relation information” includes one or more reference RSs, which may be used to represent the same or quasi-co “spatial relation” between a targeted RS or channel and the one or more reference RSs.
[0042] Additionally, in some embodiments, “beam state” is associated with or comprised of, one or more reference RSs and / or their corresponding QCL type parameters, where QCL type parameters include at least one, including a combination of two or more, of: [1] Doppler spread, [2] Doppler shift, [3] delay spread, [4] average delay, [5] average gain, and [6] Spatial parameter.
[0043] Additionally, as used herein, the term a “TCI state” means the same as, is equivalent to, or includes a “beam state” .
[0044] Additionally, as used herein, the term “spatial parameter” means the same as, is equivalent to, or is the same as spatial parameter, spatial Rx parameter, or spatial filter.
[0045] Additionally, as used herein, the terms ‘QCL-TypeA’ , ‘QCL-TypeB’ , ‘QCL-TypeC’ , and ‘QCL-TypeD’ have the following respective definitions:
[0046] - 'QCL-TypeA' : {Doppler shift, Doppler spread, average delay, delay spread}
[0047] - 'QCL-TypeB' : {Doppler shift, Doppler spread}
[0048] - 'QCL-TypeC' : {Doppler shift, average delay}
[0049] - 'QCL-TypeD' : {Spatial Rx parameter}
[0050] Additionally, as used herein, an “UL channel” may include a PUCCH or a PUSCH.
[0051] Additionally, as used herein, an “DL channel” may include a PDCCH or a PDSCH.
[0052] Additionally, as used herein, an “UL RS” may be or include a SRS, a PRACH, or a demodulation reference signal (DMRS) (e.g., a DMRS for a PUSCH or a PUCCH) .
[0053] Additionally, as used herein, a “DL RS” may be or include a synchronization signal block (SSB) , a CSI-RS, or DMRS (e.g., a DMRS for a PDSCH or a PDCCH) .
[0054] Additionally, as used herein, an “UL signal” may be or include an UL channel or a UL RS (e.g., a SRS, a physical random access channel (PRACH) , a DMRS, a PUSCH or a PUCCH) .
[0055] Additionally, as used herein, a “DL signal” may be or include a DL channel or a DL RS (e.g., a SSB, a CSI-RS, a DMRS, a PDSCH, or a PDCCH) .
[0056] Additionally, as used herein, a “time unit” may be or include a sub-symbol, a symbol, a slot, a sub-frame, a frame, or a transmission occasion.
[0057] Additionally, as used herein, a power control parameter includes a target power (also referred to as “P0” ) , a path loss RS, a scaling factor for path loss (also referred to as “alpha” ) , or a closed loop process. Also, as used herein, a path-loss may be or include a couple loss.
[0058] Additionally, as used herein, a “DCI” means the same as, or is equivalent to, a “PDCCH” .
[0059] Additionally, as used herein, the term “precoding information” means the same as, is equivalent to, or includes a precoding matrix indicator (PMI) , a transmit precoding matrix indicator (TPMI) , precoding, or a beam.
[0060] Additionally, as used herein, the term transmission and reception point (TRP) means the same as, is equivalent to, or includes a RS port, a RS port group, a RS resource, or a RS resource set.
[0061] Additionally, as used herein, the term “port group” means the same as, is equivalent to, or includes an antenna group or a user device (UE) port group.
[0062] Additionally, as used herein, the term “model” means the same as, is equivalent to, or includes: functionality, function, functionality module, function module, processing method, information processing method, or implementation. In addition or alternatively, as used herein, the term “model” is used to refer to a capability of a user device 102 to perform a certain processing or have a certain functionality, a feature, and / or a feature group.
[0063] Additionally, aspects described herein may be used or implemented in any of various communication networks, including wireless communication networks, cellular communication networks, mobile communication networks, or the like, including future implementations of such networks, such as 6G mobile communication networks and beyond.
[0064] FIG. 3 shows a flow chart of an example method 300 for wireless communication that involves resource grouping of a resource set provided from the network device 104 to the user device 102. At block 302, the user device 102 receives from the network device 104 a reference signal (RS) resource set. At block 304, the user device 102 receives from the network device 104 an indication of a resource grouping of the RS resource set. At block 306, the user device 102 splits the RS resource set into a plurality of resource groups according to the indication of the resource grouping, where the plurality of resource groups comprising a first resource group and a second resource group. Additionally, the first resource group includes a first set of one or more resources and the second resource group includes a second set of one or more resources. At block 308, the user device 102 reports first information and second information to the network device 104. The first information includes at least one measurement of the first set of one or more resources, and the second information includes a K-number of resource indicators of a K-number of one or more resources having a K-number of largest measurements. In general, K is an integer greater than or equal to one. In particular embodiments, K is equal to 1. In other embodiments, K is greater than 1 but less than a number of resources of the second resource group or of the number of resources of the resource set.
[0065] FIG. 4 shows a flow chart of another example method 400 for wireless communication that involves resource grouping of a resource set provided from the network device 104 to the user device 102. At block 402, the network device 104 transmits to the user device 102 a reference signal (RS) resource set. At block 404, the network device 104 transmits to the user device 102 an indication of a resource grouping of the RS resource set, the indication of the resource grouping used to split the RS resource set into a plurality of resource groups including a first resource group of a first set of one or more resources and a second resource group of a second set of one or more resources. At block 406, the network device receives from the user device 102 first information and second information. The first information includes at least one measurement of the first set of one or more resources of the first resource group, and the second information includes a K-number of resource indicators of a K-number of resources having a K-number of largest measurements.
[0066] In some embodiments of the method 300 and / or the method 400, the indication of the resource grouping includes a bitmap indicating whether each resource of the RS resource set belongs to the first resource group.
[0067] In some embodiments of the method 300 and / or the method 400, an M number of resources of a plurality of resources of the RS resource set to be included in the first resource group is indicated to the user device 102. The plurality of resources of the RS resource set is arranged according to a predetermined criterion, and the user device 102 determines which of the plurality of resources to be part of the M number of resources upon the plurality of resources being arranged.
[0068] In some embodiments of the method 300 and / or the method 400, an N interval number of consecutive resources for a plurality of resources of the RS resource set is indicated to the user device 102. The plurality of resources of the RS resource set is arranged according to a predetermined criterion, and the user device 102 includes a resource from every N interval number of consecutive resources in the first resource group upon the plurality of resources being arranged.
[0069] In some embodiments of the method 300 and / or the method 400, the predetermined criterion comprises one of: an order of a plurality of resource indicators of the plurality of resources, an order of reception time, an order of measurement time, or an order of resource identifications (IDs) . Also, for at least some embodiments, resource indicators are different from resource IDs, at least in that a resource indicator may be determined by a user device 102 according to a number of resources in the RS resource set, whereas a resource ID is directly configured by the network 104, such as via RRC signaling.
[0070] In some embodiments of the method 300 and / or the method 400, the at least one measurement of the first set of resources of the first resource group includes at least one measured reference signal received power (RSRP) or at least one signal to interference plus noise ratio (SINR) of at least one resource of the first set of resources.
[0071] In some embodiments of the method 300 and / or the method 400, the at least one measurement of the first set of resources of the first resource group includes a plurality of measurements reported to the network device 104 in a predetermined order corresponding to a plurality of resource indicators associated with the plurality of measurements.
[0072] In some embodiments of the method 300 and / or the method 400, the at least one measurement of the first set of resources of the first resource group includes a plurality of measurements, and among a plurality of resource indicators associated with the plurality of measurements, only a resource indicator associated with a largest measurement of the plurality of measurements is reported from the user device 102 to the network device 104.
[0073] In some embodiments of the method 300 and / or the method 400, wherein the K-number of resources are determined from the second set of resources.
[0074] In some embodiments of the method 300 and / or the method 400, wherein the at least one measurement includes less than all measurements of a plurality of measurements of the first resource group, and a bitmap including a length equal to a number of resources in the first resource group is associated with a reporting instance.
[0075] In some embodiments of the method 300 and / or the method 400, the K-number of largest measurements includes a K-number of largest reference signal received power (RSRP) or a K-number of largest signal to interference plus noise ratio (SINR) .
[0076] In some embodiments of the method 300 and / or the method 400, each resource indicator to be reported from the user device to the network device is quantized based on a P-number of resources in the first resource group or a Q-number of resources in the second resource group. In some of these embodiments, a bitwidth of each resource indicator associated with the first resource group is based on a binary logarithm of P and a bitwidth of each resource indicator in the second resource group is based on a binary logarithm of Q. In addition or alternatively, in some of these embodiments, each resource indicator n corresponds to a configured (n+1) -th entry of an associated resource in the first resource group or an associated resource in the second resource group.
[0077] In some embodiments of the method 300 and / or the method 400, a one-bit resource group indicator indicating the first resource group or the second resource group is reported from the user device 102 to the network device 104.
[0078] In some embodiments of the method 300 and / or the method 400, the K-number of resources are determined from an entirety of the RS resource set.
[0079] In some embodiments of the method 300 and / or the method 400, a reporting quantity per resource of the first information is different than a reporting quantity per resource of the second information.
[0080] In some embodiments of the method 300 and / or the method 400, the K-number of resource indicators to be reported are quantized based on a total number of the entirety of the RS resource set.
[0081] In some embodiments of the method 300 and / or the method 400, before the user device 102 reports the first information and the second information, when the first information and the second information have a same resource indicator or a same measurement of a same resource, at least one of: at least one of the same resource indicator or the same measurement is reported only once, and extra bits in a channel state information (CSI) field where a second instance of the same indicator or the same measurement is to be included is replaced with predetermined symbols; or the user device 102 reports the first information and the second information with a different reference signal received power (RSRP) quantization method or a different signal to interference plus noise ratio (SINR) quantization method indicated from the network device 104.
[0082] Further details of various actions performed by the communication nodes of the wireless communication system 100 involving resource groups and associated reporting, any of which may be incorporated into the method 300 and / or the method 400, are now described.
[0083] In some embodiments, transmit beams may be selected from a predefined analog beam codebook. In such embodiments, an exhaustive search among all possible beams in the codebook is an optimal beam training scheme. However, this may result in excessive training overhead, measurement power consumption and processing delay, especially when using narrow pencil beams. As shown as an example in FIG. 5, for artificial intelligence / machine learning (AI / ML) based spatial domain beam prediction, AI / ML computing technology, such as a deep neural network, may predict and output a set of predicted beams based on a set of sample beams input to the neural network. Correspondingly, the optimal narrow beam may be directly predicted based on measured results of all wide beams or partial narrow beams. In this way, beam sweeping over all narrow beams is not needed and thus the RS overhead for beam management is reduced. Considering data collection for model training at the network side 104, both the first (model input) information and second (model label) information may be reported from user device 102 to the network device 104 based on measurement results of the configured RS resource set. In any of various embodiments, the model input information may be or include a set of one or more beam identifiers (e.g., a channel state information resource indicator (CRI) or a synchronization signal physical broadcast channel block resource indicator (SSBRI) , as non-limiting examples) and associated measurements or beam quality (e.g., reference signal received power (RSRP) or signal to interference plus noise ratio (SINR) , as non-limiting examples) of a set of (e.g., all) wide beams or at least some narrow beams. Also, in any of various embodiments, the model label information may be or include the beam identifier of the Top-1 / K (or a top K-number) optimal narrow beam, such as those having the top K-number of largest measurements (e.g., RSRP or SINR) . In some embodiments, the model label information may also include associated measurements or beam qualities associated with the beam identifiers. Also, in any of various embodiments, RSRP may be the same as or equal to Layer 1 (L1) -RSRP, in contrast to Layer 3 (L3) -RSRP.
[0084] Additionally, in some embodiments, the network device 104 may provide or send a (or one) RS resource set for channel measurement to a user device 102. The network device 104 may do so for the collection of both model input information and model label information. In any of various embodiments, since the NW-side model training is transparent to the user device 102, the RS resources associated with the model input may be indicated to the user device 102. To this end, the user device 102 may split the RS resource set into two resource groups, including a first resource group and a second resource group. The first resource group may be used to collect the model input information. Correspondingly, the user device 102 may report measurement results of the first resource group to the network device 104. Additionally, the second resource group may be used to collect the model label information. Correspondingly, a K-number of resource indicators (and in particular embodiments only the K-number resource indicators) of a K-number of resources associated with a K-number of largest measurements (e.g., RSRP) are reported.
[0085] Additionally, in some embodiments, an indication of resource grouping within one resource set may be performed according to one or more of the following.
[0086] In a first indication of resource grouping, a resource identification (ID) of the first resource group is explicitly indicated or signaled from the network device 104 to the user device 102.
[0087] In a second indication of resource grouping, a bitmap with one bit per resource is associated with the resource set. In particular of these ways to indicate, the length of the bitmap is equal to the number of resources in the resource set, and each bit in the bitmap corresponds to a respective resource of the resource set. Accordingly, each bit in the bitmap indicates whether a corresponding resource belongs to the first resource group.
[0088] In a third indication of resource grouping, only the number of resources in the first resource group is indicated to the user device 102, and the resource grouping is performed in a predefined or predetermined way . For example, the resources in the resource set may be sorted or arranged by the user device 102 according to an order, such as an ascending order or a descending order, of the resource indicators (e.g., CRI or SSBRI) , of reception time, of measurement time, or of resource ID. In turn, or upon the resources being arranged, the user device 102 may determine the first resource group to include a certain M-number of the resources, such as the first M resources or the last M resources, where M is the number of resources in the first resource group.
[0089] FIG. 6 shows a diagram of an example of grouping of the first resource group. In the example in FIG. 6, the resource set includes eight resources arranged in ascending order according to resource indicator. The number M indicated to the user device 102 is 4, and under the predetermined way, the user device 102 selects the first M-number, or in this case the first four, of the eight resources to be in the first resource group.
[0090] In a fourth indication of resource grouping, an interval N of adjacent resources for the first resource group is indicated to the user device 102. In turn, the user device 102 may determine which resources to include in the first resource group according to the indicated interval. For example, the resources in the resource set may be sorted or arranged by the user device 102 according to an order, such as an ascending or a descending order, of the resource indicator (e.g., CR or / SSBRI) , of reception time, of measurement time, or of resource ID. In turn, upon the resources being arranged, the user device 102 may determine the first resource group to include a resource, such as the first resource, of every N consecutive resources, where N is the indicated interval from the network device.
[0091] FIG. 7 shows a diagram of an example of grouping of the first resource group according to an interval number N. In the example, eight resources of a resource set are arranged in ascending order according to resource indicators. Additionally, in the example, the interval number N indicated to the user device 102 is 4. Accordingly, as shown in FIG. 7, the user device 102 may select the first resource of every Nth (every fourth in the example) consecutive resource to be in the first resource group.
[0092] In addition, the present description considers UE reporting issues for the network-side data collection. As mentioned above, one RS resource set for channel measurement may be provided from the network 104 to the user device 102 for the collection of both first (model input) information and second (model label) information. Moreover, as mentioned, the RS resources associated with the model input are indicated to the user device 102 by resource grouping. Regarding the UE reporting for NW-side data collection, the following actions may be performed.
[0093] Regarding measurements of resources of the first resource group, at least one measurement (e.g., RSRP or SINR) of at least one resource (which may include all measurements or only some measurements in any of various embodiments) may be selected or determined by the user device 102 to be reported to the network 104 to be used as model input in network-model training, updating, and / or monitoring. In some of these embodiments, at least one resource indicator associated with the at least one measurement is also reported from the user device 102 to the network device 104 as model input.
[0094] In addition, in some embodiments, the user device 102 may report measurements, such as RSRP or SINR, (including all measurements of the resources of the first resource group) in a predetermined order, e.g., according to the an ascending order or a descending order of the corresponding resource indicators. Doing so may reduce reporting overhead.
[0095] In some embodiments, where a plurality of measurements (such as all measurement in some embodiments) of resources of the first resource group are to be reported, only the resource indicator associated with the largest measurement (e.g., the largest RSRP or the largest SINR) among the plurality of measurements of the first resource group (or in the configured resource set) is reported to the network device 104. The reporting of only the resource indicator associated with the largest measurement may indicate the location of the largest measurement among the plurality of measurements, the reporting of other resource indicators in the first resource group may not be needed.
[0096] Additionally, in some embodiments, if less than all of the measurements of the first resource group are to be reported, a bitmap with a length equal to the number of resources in the first resource group may be associated with the reporting instance. The bitmap may indicate whether the corresponding measured RS resource in the first resource group is reported or not. In some embodiments, the resource indicator of the resource with the largest measurement (e.g., largest RSRP or largest SINR) over a plurality of (e.g., all) resources in the first resource group (or in the configured resource set) is reported to indicate the location of the largest measurement (e.g., largest RSRP or largest SINR) , and the reporting of other resource indicators in the first resource group is not needed.
[0097] Additionally, in some embodiments, with respect to one or more measurements of resources of the second resource group, a certain number of resource indicators of the certain number of resources having the certain number of largest measurements in the second resource group are reported. The certain number may be one or more in any of various embodiments. Also, the certain number of resource indicators may be used as the model label information in the NW-side model training, updating, and / or monitoring. In one typical example, only one resource indicator associated with the largest measurement (e.g., largest RSRP or largest SINR) over all measurements of the second resource group (e.g., Top-1 beam identifier) is reported.
[0098] Additionally, in some embodiments, one or more (e.g., all) resource indicators to be reported may be quantized based on the total number of resources in the corresponding resource set. In particular of these embodiments, the bitwidth for each resource indicator to be reported is where X is the number of resources in the corresponding resource set. In other embodiments, each resource indicator to be reported is quantized based on the number of resources in the respective resource group. In particular of these other embodiments, the bitwidth for the resource indicator in the first resource group is a binary logarithm of P (e.g., ) and the bitwidth for the resource indicator in the second resource group is a binary logarithm of Q (e.g., ) where P and Q are the number of resources in the first resource group and second resource group, respectively. Also, in some embodiments, a resource indicator n (n ≥ 0) may correspond to the configured (n+1) -th entry of associated resources in the corresponding resource group of the resource set for channel measurement. FIG. 8 is a diagram providing an example of report quantities and length, where there are four and twenty resources in the first resource group and the resource set, respectively.
[0099] Additionally, in some embodiments, the user device 102 may report a resource group indicator to the network device to indicate the first resource group or the second resource group. In some of these embodiments, the resource group indicator may be a 1-bit resource group indicator that can be either a ‘0’ bit value or a ‘1’ bit value. The ‘0’ bit value may indicate one of the first resource group and the second resource group, and the ‘1’ bit value may indicate the other of the first resource group and the second resource group. In particular of these embodiments, where the resource group indicator reported is a ‘0’ bit value, the resource indicator and / or the measurement from the first resource group are present first in the mapping order of CSI fields of one report. This implies that the largest measurement comes from the first resource group. Also, if the resource group indicator reported is a ‘1’ bit value, the resource indicator and / or the measurement from the second resource group are present first in the mapping order of CSI fields of one report. This implies that the largest measurement comes from the second resource group.
[0100] In at least some of the previously described embodiments, the beam set for model input is different from the beam set for model output. In such embodiments, it is assumed that the model input information is only selected from the first resource group and the model label information is only selected from the second resource group. In turn, the reporting for the measurement results of the first resource group and the second resource group is separately handled.
[0101] In contrast, in the following embodiments, the beam set for the model input is a subset of the beam set for model output. In such embodiments, the model input information is selected from the measurements (or measurement results) of the first resource group, while the model label information is selected from the measurements (or measurement results) of the whole resource set for channel measurement, not just the second resource group. Potentially, there may be some overlapping between the model input information and model label information.
[0102] For embodiments where the model label information is selected from the measurements (or measurement results) of the whole resource set, the reporting performed by the user device 102 may include two parts. A first part may include the first (model input) information obtained from the measurement of the first resource group, and a second part may include the second (model label) information obtained from the measurement of the resource set. In particular of these embodiments, the reporting quantities per resource among the two parts may be different. For example, for the first resource group or the first (model input) information, the reporting quantity per resource may be two, such as a resource indicator and an associated measurement per resource. For the second resource group or the second (model label) information, the reporting quantity may be one, such as only a resource indicator or only a measurement per resource.
[0103] Additionally, in some embodiments, for the reporting of model input information, at least one of the measurements (such as all or less than all measurements) selected by the user device 102 for the first resource group and / or the corresponding resource indicators may be reported as part of the first (mode input) information. In some of these embodiments, each resource indicator to be reported is quantized based on the number of resources in the first resource group. For example, the bitwidth for a resource indicator in the first resource group may be based on a binary logarithm of P (e.g., ) , where P is the number of resources in the first resource group. In addition or alternatively, for at least some of these embodiments, a resource indicator n (n ≥ 0) corresponds to the configured (n+1) -th entry of associated resource in the first resource group of the resource set for channel measurement.
[0104] Additionally, in some embodiments, for the reporting of second (model label) information, a K-number (K is one or more) of resource indicators of a K-number of resource having a K-number of largest measurements (e.g., RSRP or SINR) in the whole or entire resource set are reported. In some of these embodiments, each resource indicator to be reported is quantized based on the whole number of resources in the resource set. Specifically, the bitwidth for the resource indicator is where X is the number of resources in the resource set. In addition or alternatively, for at least some of these embodiments, a resource indicator n (n ≥ 0) corresponds to the configured (n+1) -th entry of associated resource in the resource set for channel measurement. For embodiments where the model label information includes both the resource indicator and the associated measurement, the model label information may be present first in the mapping order of CSI fields of one report, as the model label information includes the beam indicator with the largest measurement in one reporting instance.
[0105] FIG. 9 is a diagram providing an example where there are 4 and 20 resources in the first resource group and the resource set, respectively.
[0106] Additionally, in some embodiments, as explained above, in some situations, there may overlapping for the reporting of model input information and model label information. For example, the same beam may be repeatedly reported if it is used for both the model input information and the model label information. To illustrate, one of the resources in the first resource group may have the largest measurement (e.g., largest RSRP or largest SINR) over all measurements of the configured resource set. Some implementations may account for the potential overlap and take accounting of the resources that are, or that are to be, reported so that each resource in the configured resource set is reported once. Also, the UCI payload may pre-configured by the network device 104. In event that a measurement of a resource to be reported is dropped due to overlapping issues, the reporting overhead may also change accordingly. Therefore, to guarantee a constant reporting overhead, one or more of the following may be performed.
[0107] In event that there is no overlapping between the model input information and the model label information, the reporting is performed with a measurement (e.g., a RSRP or a SINR) quantization method indicated from the network device. In event that there is overlapping between the model input information and the model label information, the reporting is performed with the same measurement (e.g., RSRP or SINR) quantization method indicated from the network device. For at least some of these embodiments where there is overlapping, extra bits in the CSI field are filled with predetermined symbols, such as zero as a non-limiting example. In addition or alternatively, in event that there is overlapping between the model input information and the model label information, the reporting is performed with a different measurement (e.g., RSRP or SINR) quantization method indicated from the network device 104. For example, a high precision quantization method with a wider quantization range or a lower step size may be used, which may allow for more bits to be consumed for measurement (e.g., RSRP or SINR) quantization.
[0108] Other embodiments may perform the reporting actions as previously described, but for reporting layer 1 SINR (L1-SINR) and / or SSBRI. That is, in all above embodiments, SSBRI may be used instead of CRI, and / or L1-SINR may be used instead of L1-RSRP.
[0109] Additionally, in some embodiments, the time domain behavior of the CSI-RS resources within a CSI resource set can be set to aperiodic, periodic, or semi-persistent. For a periodic and semi-persistent CSI resource set, the configured periodicity and slot offset is given in the numerology of its associated DL BWP. Also, the CSI-RS resources within one set are configured with the same periodicity, while the slot offset may be the same or different for different CSI-RS resources. For an aperiodic CSI resource set, the transmission of the CSI-RS resource set is triggered by DCI. In such embodiments for aperiodic, periodic, and semi-persistent CSI resource set, resource configuration based on repetition may be performed. An additional slot offset is configured per CSI-RS resource set or per subset of the CSI-RS resource set for the purpose of re-transmission indication.
[0110] In further detail, for periodic and semi-persistent CSI-RS resource sets, the CSI-RS transmission may occur every Nth slot, where N is the periodicity configured by the network device 104. Apart from that, the same configured CSI-RS resource set / subset may be repeated several times within one periodicity. The number of repetitions and the associated time domain properties of each repetition may be explicitly indicated or configured from the network device 104 to the user device 102, such as via radio resource control (RRC) , medium access control control element (MAC CE) , or DCI signaling. In particular of these embodiments, within one periodicity, each repeated CSI-RS resource set or subset may be transmitted after a configured slot offset from the last repeated CSI-RS resource set or subset or from the configured CSI-RS resource set or subset or from the beginning of the periodicity. That is to say, all CSI-RS resources within the CSI-RS resource set or subset may be re-transmitted after a configurable time offset while maintaining all parameters, such as resource mapping, power control, and QCL information. FIG. 10 illustrates a timing diagram of an example of a CSI-RS resource configuration, where the number of repetitions is two.
[0111] Similarly, for an aperiodic CSI-RS resource set, the number of repetitions and the associated time domain properties may be explicitly indicated or configured from the network device 104 to the user device, such as via RRC, MAC CE, or DCI signaling. In particular embodiments, each repeated CSI-RS resource set or subset may be transmitted after a configured slot offset from the last repeated CSI-RS resource set or subset or from the configured CSI-RS resource set or subset or from the slot including the DCI that triggers the aperiodic CSI-RS resource set. Accordingly, all CSI-RS resources within the CSI-RS resource set or subset may be re-transmitted after a configurable time offset while maintaining all parameters such as resource mapping, power control, and QCL information. FIG. 11 shows a timing diagram of an example of a CSI-RS resource configuration, where the number of repetitions is 2.
[0112] Additionally, in some embodiments, for multiple RS resource sets associated with each other or that belong to the same group, one RS set may be activated, deactivated, and / or triggered by the activation, deactivation, or triggering of another associated RS resource set. Similarly, for multiple CSI reports associated each other or that belong to the same group, one CSI report may be activated, deactivated, and / or triggered by activation, deactivation, or triggering of another associated CSI report. In this way, multiple RS resource sets may be activated, deactivated, and / or triggered by one signaling, such as by MAC CE, or DCI signaling. Similarly, multiple CSI reports may be activated, deactivated, and / or triggered by one signaling, such as by MAC CE, or DCI signaling, resulting of reduced signaling overhead. In particular embodiments, multiple CSI-RS resource sets, multiple CSI-IM resource sets, multiple SRS resource sets, and / or multiple CSI reports may be associated with each other, such as via RRC, MAC CE, or DCI signaling, and / or may be activated, deactivated, and / or triggered together. For example, if one semi-persistent CSI-RS resource set is activated or deactivated via MAC CE, all other associated CSI-RS resource sets may be automatically activated or deactivated without explicit signaling. As another example, if one aperiodic CSI-RS resource set is triggered via a DCI, all other associated CSI-RS resource sets may be automatically triggered without explicit signaling.
[0113] The description and accompanying drawings above provide specific example embodiments and implementations. The described subject matter may, however, be embodied in a variety of different forms and, therefore, covered or claimed subject matter is intended to be construed as not being limited to any example embodiments set forth herein. A reasonably broad scope for claimed or covered subject matter is intended. Among other things, for example, subject matter may be embodied as methods, devices, components, systems, or non-transitory computer-readable media for storing computer codes. Accordingly, embodiments may, for example, take the form of hardware, software, firmware, storage media or any combination thereof. For example, the method embodiments described above may be implemented by components, devices, or systems including memory and processors by executing computer codes stored in the memory.
[0114] Throughout the specification and claims, terms may have nuanced meanings suggested or implied in context beyond an explicitly stated meaning. Likewise, the phrase “in one embodiment / implementation” as used herein does not necessarily refer to the same embodiment and the phrase “in another embodiment / implementation” as used herein does not necessarily refer to a different embodiment. It is intended, for example, that claimed subject matter includes combinations of example embodiments in whole or in part.
[0115] In general, terminology may be understood at least in part from usage in context. For example, terms, such as “and” , “or” , or “and / or, ” as used herein may include a variety of meanings that may depend at least in part on the context in which such terms are used. Typically, “or” if used to associate a list, such as A, B or C, is intended to mean A, B, and C, here used in the inclusive sense, as well as A, B or C, here used in the exclusive sense. In addition, the term “one or more” as used herein, depending at least in part upon context, may be used to describe any feature, structure, or characteristic in a singular sense or may be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as “a, ” “an, ” or “the, ” may be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context. In addition, the term “based on” may be understood as not necessarily intended to convey an exclusive set of factors and may, instead, allow for existence of additional factors not necessarily expressly described, again, depending at least in part on context.
[0116] Reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that may be realized with the present solution should be or are included in any single implementation thereof. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussions of the features and advantages, and similar language, throughout the specification may, but do not necessarily, refer to the same embodiment.
[0117] Furthermore, the described features, advantages and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. One of ordinary skill in the relevant art will recognize, in light of the description herein, that the present solution can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.
[0118] The subject matter of the disclosure may also relate to or include, among others, the following aspects:
[0119] A first aspect includes a method for wireless communication that includes: receiving, by a user device from a network device, a reference signal (RS) resource set; receiving, by the user device from the network device, an indication of a resource grouping of the RS resource set; splitting, by the user device, the RS resource set into a plurality of resource groups according to the indication of the resource grouping, the plurality of resource groups including a first resource group and a second resource group, wherein the first resource group includes a first set of one or more resources and the second resource group includes a second set of one or more resources; and reporting, by the user device, first information and second information to the network device, the first information including at least one measurement of the first set of one or more resources, the second information including a K-number of resource indicators of a K-number of one or more resources having a K-number of largest measurements.
[0120] A second aspect includes a method for wireless communication that includes: transmitting, by a network device to a user device, a reference signal (RS) resource set; transmitting, by the network device to the user device, an indication of a resource grouping of the RS resource set, the indication of the resource grouping used to split the RS resource set into a plurality of resource groups comprising a first resource group of a first set of one or more resources and a second resource group of a second set of one or more resources; and receiving, by the network device from the user device, first information and second information, the first information including at least one measurement of the first set of one or more resources of the first resource group, and the second information including a K-number of resource indicators of a K-number of resources having a K-number of largest measurements.
[0121] A third aspect includes any of the first or second aspects, and further includes wherein the indication of the resource grouping includes a bitmap indicating whether each resource of the RS resource set belongs to the first resource group.
[0122] A fourth aspect includes any of the first or second aspects, and further includes wherein an M number of resources of a plurality of resources of the RS resource set to be included in the first resource group is indicated to the user device, wherein the plurality of resources of the RS resource set is arranged according to a predetermined criterion, and wherein the user device determines which of the plurality of resources to be part of the M number of resources upon the plurality of resources being arranged.
[0123] A fifth aspect includes any of the first or second aspects, and further includes wherein a N interval number of consecutive resources for a plurality of resources of the RS resource set is indicated to the user device, wherein the plurality of resources of the RS resource set is arranged according to a predetermined criterion, and wherein the user device includes a resource from every N interval number of consecutive resources in the first resource group upon the plurality of resources being arranged.
[0124] A sixth aspect includes any of the fourth or fifth aspects, and further includes wherein the predetermined criterion includes one of: an order of a plurality of resource indicators of the plurality of resources, an order of reception time, an order of measurement time, or an order of resource identifications (IDs) .
[0125] A seventh aspect includes any of the first through sixth aspects, and further includes wherein the at least one measurement of the first set of resources of the first resource group includes at least one measured reference signal received power (RSRP) or at least one signal to interference plus noise ratio (SINR) of at least one resource of the first set of resources.
[0126] An eighth aspect includes any of the first through seventh aspects, and further includes wherein the at least one measurement of the first set of resources of the first resource group includes a plurality of measurements, the plurality of measurements is reported to the network device in a predetermined order corresponding to a plurality of resource indicators associated with the plurality of measurements.
[0127] A ninth aspect includes any of the first through eighth aspects, and further includes wherein the at least one measurement of the first set of resources of the first resource group includes a plurality of measurements, and wherein among a plurality of resource indicators associated with the plurality of measurements, only a resource indicator associated with a largest measurement of the plurality of measurements is reported from the user device to the network device.
[0128] A tenth aspect includes any of the first through ninth aspects, and further includes wherein the K-number of resources are determined from the second set of resources.
[0129] An eleventh aspect includes any of the first through tenth aspects, and further includes wherein the at least one measurement includes less than all measurements of a plurality of measurements of the first resource group, and wherein a bitmap including a length equal to a number of resources in the first resource group is associated with a reporting instance.
[0130] A twelfth aspect includes any of the first through eleventh aspects, and further includes wherein the K-number of largest measurements includes a K-number of largest reference signal received power (RSRP) or a K-number of largest signal to interference plus noise ratio (SINR) .
[0131] A thirteenth aspect includes any of the first through twelfth aspects, and further includes wherein each resource indicator to be reported from the user device to the network device is quantized based on a P-number of resources in the first resource group or a Q-number of resources in the second resource group.
[0132] A fourteenth aspect includes the thirteenth aspect, and further includes wherein a bitwidth of each resource indicator associated with the first resource group is based on a binary logarithm of P and a bitwidth of each resource indicator in the second resource group is based on a binary logarithm of Q.
[0133] A fifteenth aspect includes any of the thirteenth or fourteenth aspects, and further includes wherein each resource indicator n corresponds to a configured (n+1) -th entry of an associated resource in the first resource group or an associated resource in the second resource group.
[0134] A sixteenth aspect includes any of the first through fifteenth aspects, and further includes wherein a one-bit resource group indicator indicating the first resource group or the second resource group is reported from the user device to the network device.
[0135] A seventeenth aspect includes any of the first through sixteenth aspects, and further includes wherein a reporting quantity per resource of the first information is different than a reporting quantity per resource of the second information.
[0136] An eighteenth aspect includes any of the first through ninth or eleventh through seventeenth aspects, and further includes wherein the K-number of resources are determined from an entirety of the RS resource set.
[0137] A nineteenth aspect includes the eighteenth aspect, and further includes wherein the K-number of resource indicators to be reported are quantized based on a total number of the entirety of the RS resource set.
[0138] A twentieth aspect includes any of the eighteenth or nineteenth aspects, and further includes wherein before the user device reports the first information and the second information, when the first information and the second information have a same resource indicator or a same measurement of a same resource, at least one of: at least one of the same resource indicator or the same measurement is reported only once, and extra bits in a channel state information (CSI) field where a second instance of the same indicator or the same measurement is to be included is replaced with predetermined symbols; or the user device reports the first information and the second information with a different reference signal received power (RSRP) quantization method or a different signal to interference plus noise ratio (SINR) quantization method indicated from the network device.
[0139] A twenty-first aspect includes a wireless communications apparatus including a processor and a memory, wherein the processor is configured to read code from the memory to implement any of the first through twentieth aspects.
[0140] A twenty-second aspect includes a computer program product including a computer-readable program medium comprising code stored thereupon, the code, when executed by a processor, causing the processor to implement any of the first through twentieth aspects.
[0141] In addition to the features mentioned in each of the independent aspects enumerated above, some examples may show, alone or in combination, the optional features mentioned in the dependent aspects and / or as disclosed in the description above and shown in the figures.
Claims
1.A method for wireless communication, the method comprising:receiving, by a user device from a network device, a reference signal (RS) resource set;receiving, by the user device from the network device, an indication of a resource grouping of the RS resource set;splitting, by the user device, the RS resource set into a plurality of resource groups according to the indication of the resource grouping, the plurality of resource groups comprising a first resource group and a second resource group, wherein the first resource group comprises a first set of one or more resources and the second resource group comprises a second set of one or more resources; andreporting, by the user device, first information and second information to the network device, the first information comprising at least one measurement of the first set of one or more resources, the second information comprising a K-number of resource indicators of a K-number of one or more resources having a K-number of largest measurements.2.A method for wireless communication, the method comprising:transmitting, by a network device to a user device, a reference signal (RS) resource set;transmitting, by the network device to the user device, an indication of a resource grouping of the RS resource set, the indication of the resource grouping used to split the RS resource set into a plurality of resource groups comprising a first resource group of a first set of one or more resources and a second resource group of a second set of one or more resources; andreceiving, by the network device from the user device, first information and second information, the first information comprising at least one measurement of the first set of one or more resources of the first resource group, the second information comprising a K-number of resource indicators of a K-number of resources having a K-number of largest measurements.3.The method of any of claims 1 or 2, wherein the indication of the resource grouping comprises a bitmap indicating whether each resource of the RS resource set belongs to the first resource group.4.The method of any of claims 1 or 2, wherein an M number of resources of a plurality of resources of the RS resource set to be included in the first resource group is indicated to the user device, wherein the plurality of resources of the RS resource set is arranged according to a predetermined criterion, and wherein the user device determines which of the plurality of resources to be part of the M number of resources upon the plurality of resources being arranged.5.The method of any of claims 1 or 2, wherein a N interval number of consecutive resources for a plurality of resources of the RS resource set is indicated to the user device, wherein the plurality of resources of the RS resource set is arranged according to a predetermined criterion, and wherein the user device includes a resource from every N interval number of consecutive resources in the first resource group upon the plurality of resources being arranged.6.The method of any of claims 4 or 5, wherein the predetermined criterion comprises one of: an order of a plurality of resource indicators of the plurality of resources, an order of reception time, an order of measurement time, or an order of resource identifications (IDs) .7.The method of any of claims 1 or 2, wherein the at least one measurement of the first set of resources of the first resource group comprises at least one measured reference signal received power (RSRP) or at least one signal to interference plus noise ratio (SINR) of at least one resource of the first set of resources.8.The method of any of claims 1 or 2, wherein the at least one measurement of the first set of resources of the first resource group comprises a plurality of measurements, the plurality of measurements is reported to the network device in a predetermined order corresponding to a plurality of resource indicators associated with the plurality of measurements.9.The method of any of claims 1 or 2, wherein the at least one measurement of the first set of resources of the first resource group comprises a plurality of measurements, and wherein among a plurality of resource indicators associated with the plurality of measurements, only a resource indicator associated with a largest measurement of the plurality of measurements is reported from the user device to the network device.10.The method of any of claims 1 or 2, wherein the K-number of resources are determined from the second set of resources.11.The method of any of claims 1 or 2, wherein the at least one measurement comprises less than all measurements of a plurality of measurements of the first resource group, and wherein a bitmap comprising a length equal to a number of resources in the first resource group is associated with a reporting instance.12.The method of any of claims 1 or 2, wherein the K-number of largest measurements comprises a K-number of largest reference signal received power (RSRP) or a K-number of largest signal to interference plus noise ratio (SINR) .13.The method of any of claims 1 or 2, wherein each resource indicator to be reported from the user device to the network device is quantized based on a P-number of resources in the first resource group or a Q-number of resources in the second resource group.14.The method of claim 13, wherein a bitwidth of each resource indicator associated with the first resource group is based on a binary logarithm of P and a bitwidth of each resource indicator in the second resource group is based on a binary logarithm of Q.15.The method of claim 13, wherein each resource indicator n corresponds to a configured (n+1) -th entry of an associated resource in the first resource group or an associated resource in the second resource group.16.The method of any of claims 1 or 2, wherein a one-bit resource group indicator indicating the first resource group or the second resource group is reported from the user device to the network device.17.The method of any of claims 1 or 2, wherein a reporting quantity per resource of the first information is different than a reporting quantity per resource of the second information.18.The method of any of claims 1 or 2, wherein the K-number of resources are determined from an entirety of the RS resource set.19.The method of claim 18, wherein the K-number of resource indicators to be reported are quantized based on a total number of the entirety of the RS resource set.20.The method of claim 18, wherein before the user device reports the first information and the second information, when the first information and the second information have a same resource indicator or a same measurement of a same resource, at least one of:at least one of the same resource indicator or the same measurement is reported only once, and extra bits in a channel state information (CSI) field where a second instance of the same indicator or the same measurement is to be included is replaced with predetermined symbols; orthe user device reports the first information and the second information with a different reference signal received power (RSRP) quantization method or a different signal to interference plus noise ratio (SINR) quantization method indicated from the network device.21.A wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory to implement a method of any of claims 1 to 20.22.A computer program product comprising a computer-readable program medium comprising code stored thereupon, the code, when executed by a processor, causing the processor to implement a method of any of claims 1 to 20.