Method and apparatus for reporting channel state information under adaptation in wireless communication system

Abstract

The invention discloses a method and apparatus for reporting channel state information under adaptation in a wireless communication system. In an instance from the perspective of the user equipment, the user equipment receives an indication of activation of cell discontinuous transmissions, where the cell discontinuous transmissions are associated with one or more active periods and one or more inactive periods, and the user equipment is configured with a plurality of channel state information reference signal resources for deriving channel state information reports. The user equipment determines whether to transmit a channel state information report based on whether the user equipment receives a channel state information reference signal in an active period of the one or more active periods associated with the cell discontinuous transmission.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 529,491, filed on July 28, 2023, the entire disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to wireless communication networks, and more particularly, to a method and apparatus for reporting channel state information (CSI) under adaptation in a wireless communication system. Background Art

[0004] With the rapid growth of the demand for transmitting large amounts of data to and from mobile communication devices, traditional mobile voice communication networks have evolved into networks that communicate using Internet Protocol (IP) packets. This IP packet communication can provide IP-bearing voice, multimedia, multicast and on-demand communication services for users of mobile communication devices.

[0005] An exemplary network structure is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN). The E-UTRAN system can provide high data throughput to implement the above-mentioned IP-bearing voice and multimedia services. Currently, the 3GPP standards organization is discussing the next generation (e.g., 5G) new air interface technology. Therefore, changes to the current body of 3GPP standards are currently being submitted and considered to evolve and complete the 3GPP standards. Summary of the invention

[0006] According to the present disclosure, one or more devices and / or methods are provided. In an example from the perspective of a user equipment (UE), the UE receives an indication of activation of a cell discontinuous transmission (DTX), wherein the cell DTX is associated with one or more active periods and one or more inactive periods, and the UE is configured with multiple channel state information reference signals (Channel State Information Reference Signal, CSI-RS) resources for deriving CSI reports. The UE determines whether to transmit a CSI report based on whether the UE receives a CSI-RS in an active period in one or more active periods associated with the cell DTX.

[0007] In an example from the perspective of a base station, the base station transmits an indication of activation of cell DTX to the UE, wherein the adaptation is associated with switching from a first number of ports to a second number of ports. The base station configures a plurality of CSI-RS resources for deriving a CSI report for the UE. Based on whether the UE receives a CSI-RS associated with the second number of ports, the base station determines whether the CSI report is received. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A drawing showing a wireless communication system according to an exemplary embodiment is shown.

[0009] Figure 2 is a block diagram of a transmitter system (also referred to as an access network) and a receiver system (also referred to as a user equipment or UE) according to an exemplary embodiment.

[0010] Figure 3 is a functional block diagram of a communication system according to an exemplary embodiment.

[0011] Figure 4 According to an exemplary embodiment Figure 3 Functional block diagram of the program code.

[0012] Figure 5 is a diagram illustrating an exemplary scenario associated with uplink-downlink timing relationships according to an exemplary embodiment.

[0013] Figure 6 is a flow chart according to an exemplary embodiment.

[0014] Figure 7 is a flow chart according to an exemplary embodiment.

[0015] Figure 8 is a flow chart according to an exemplary embodiment.

[0016] Fig. 9 is a flow chart according to an exemplary embodiment.

[0017] Fig.10 is a flow chart according to an exemplary embodiment.

[0018] Fig.11 is a flow chart according to an exemplary embodiment.

[0019] Fig.12 is a flow chart according to an exemplary embodiment. DETAILED DESCRIPTION

[0020] The exemplary wireless communication systems and devices described below adopt wireless communication systems that support broadcast services. Wireless communication systems are widely deployed to provide various types of communications, such as voice, data, etc. These systems can be based on code division multiple access (code division multiple access, CDMA), time division multiple access (time division multiple access, TDMA), orthogonal frequency division multiple access (orthogonal frequency division multiple access, OFDMA), 3rd Generation Partnership Project (3GPP) Long Term Evolution (Long Term Evolution, LTE) radio access, 3GPP Advanced Long Term Evolution (Long Term Evolution Advanced, LTE-A or LTE-Advanced), 3GPP2 Ultra Mobile Broadband (Ultra Mobile Broadband, UMB), WiMax, 3GPP New Radio (New Radio, NR) radio access for 5G, or some other modulation technology.

[0021] Specifically, the exemplary wireless communication system apparatus described below may be designed to support one or more standards, for example, standards provided by an association named "3rd Generation Partnership Project" (referred to herein as 3GPP), including: 3GPP TS 38.211 V15.7.0, "NR Physical Channels and Modulation"; 3GPP TS 38.214 V17.4.0, "NR Physical Layer Procedures for Data"; RP-230566, "WID Revision: Network Energy Saving for NR"; RAN1#110 Chairman's Minutes; RAN1#110bis-e Chairman's Minutes. The standards and documents listed above are hereby expressly incorporated by reference in their entirety.

[0022] Figure 1 A multiple access wireless communication system according to one or more embodiments of the present disclosure is presented. An access network 100 (AN) includes multiple antenna groups, one group includes 104 and 106, another group includes 108 and 110, and an additional group includes 112 and 114. Figure 1In the figure, only two antennas are shown for each antenna group, however, each antenna group may utilize more or fewer antennas. Access terminal 116 (AT) communicates with antennas 112 and 114, where antennas 112 and 114 transmit information to access terminal 116 via forward link 120 and receive information from access terminal 116 via reverse link 118. AT 122 communicates with antennas 106 and 108, where antennas 106 and 108 transmit information to AT 122 via forward link 126 and receive information from AT 122 via reverse link 124. In a frequency-division duplexing (FDD) system, communication links 118, 120, 124, and 126 may use different frequencies for communication. For example, forward link 120 may use a different frequency than the frequency used by reverse link 118.

[0023] Each group of antennas and / or the area in which they are designed to communicate is often referred to as a sector of the access network. In an embodiment, the antenna groups can each be designed to communicate with access terminals in a sector of the area covered by the access network 100.

[0024] In communicating over forward links 120 and 126, the transmit antennas of access network 100 may utilize beamforming in order to improve the signal-to-noise ratio of the forward links for the different access terminals 116 and 122. Also, an access network that uses beamforming to transmit to access terminals that are randomly dispersed throughout the coverage area of ​​the access network generally causes less interference to access terminals in neighboring cells than an access network that transmits to all of its access terminals via a single antenna.

[0025] An access network (AN) may be a fixed station or base station for communicating with a terminal, and may also be referred to as an access point, Node B, base station, enhanced base station, eNodeB (eNB), next generation NodeB (gNB) or some other term. An access terminal (AT) may also be referred to as a user equipment (UE), a wireless communication device, a terminal, an access terminal or some other term.

[0026] Figure 2 Embodiments of a transmitter system 210 (also referred to as an access network) and a receiver system 250 (also referred to as an access terminal (AT) or user equipment (UE)) are presented in a multiple-input and multiple-output (MIMO) system 200. At the transmitter system 210, traffic data for a plurality of data streams may be provided from a data source 212 to a transmit (TX) data processor 214.

[0027] In one embodiment, each data stream is transmitted through a respective transmit antenna.TX data processor 214 formats, codes, and interleaves the traffic data for each data stream based on a particular coding scheme selected for that data stream to provide coded data.

[0028] The decoded data for each data stream may be multiplexed with pilot data using orthogonal frequency division multiplexing (OFDM) techniques. The pilot data may typically be a known data pattern processed in a known manner and may be used at the receiver system to estimate the channel response. The multiplexed pilot and decoded data of the data stream may then be modulated (i.e., symbol mapped) based on a particular modulation scheme selected for each data stream (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-ary phase shift keying (M-PSK), or M-ary quadrature amplitude modulation (M-QAM)) to provide modulation symbols. Instructions executed by processor 230 may determine the data rate, coding, and / or modulation for each data stream.

[0029] The modulation symbols for the data stream are then provided to a TX MIMO processor 220, which may further process the modulation symbols (eg, for OFDM). The TX MIMO processor 220 then converts the N T The modulation symbol stream is provided to N T transmitters (TMTR) 222a through 222t. In certain embodiments, TX MIMO processor 220 may apply beamforming weights to the symbols of the data streams and to the antenna from which the symbol is being transmitted.

[0030] Each transmitter 222 receives and processes a respective symbol stream to provide one or more analog signals, and further conditions (e.g., amplifies, filters, and / or upconverts) the analog signals to provide a modulated signal suitable for transmission over the MIMO channel. T The antennas 224a to 224t transmit N signals from the transmitters 222a to 222t. T a modulated signal.

[0031] At the receiver system 250, N RThe transmitted modulated signals are received by each antenna 252a through 252r and the received signal from each antenna 252 may be provided to a respective receiver (RCVR) 254a through 254r. Each receiver 254 may condition (e.g., filter, amplify, and downconvert) a respective received signal, digitize the conditioned signal to provide samples, and / or further process the samples to provide a corresponding “received” symbol stream.

[0032] RX data processor 260 then extracts the N R The receiver 254 receives and / or processes N R received symbol streams to provide N T The RX data processor 260 may then demodulate, deinterleave, and / or decode each detected symbol stream to recover the traffic data for the data stream. The processing by the RX processor 260 may be complementary to the processing performed by the TX MIMO processor 220 and the TX data processor 214 at the transmitter system 210.

[0033] Processor 270 may periodically determine which pre-coding matrix to use (discussed below). Processor 270 formulates a reverse link message comprising a matrix index portion and a rank value portion.

[0034] The reverse link message may include various types of information related to the communication link and / or the received data stream. The reverse link message may then be processed by the TX data processor 238, modulated by the modulator 280, conditioned by the transmitters 254a to 254r, and / or transmitted back to the transmitter system 210, the TX data processor also receiving traffic data for a plurality of data streams from the data source 236.

[0035] At the transmitter system 210, the modulated signal from the receiver system 250 is received by the antenna 224, conditioned by the receiver 222, demodulated by the demodulator 240, and processed by the RX data processor 242 to extract the reverse link message transmitted by the receiver system 250. The processor 230 may then determine which precoding matrix to use to determine the beamforming weights and may then process the extracted message.

[0036] Figure 3 An alternative simplified functional block diagram of a communication device according to one embodiment of the disclosed subject matter is presented. Figure 3 As shown in FIG. , the communication device 300 in the wireless communication system can be used to implement Figure 1 UE (or AT) 116 and 122 in or Figure 1The base station (or AN) 100 in the wireless communication system may be an LTE system or an NR system. The communication device 300 may include an input device 302, an output device 304, a control circuit 306, a central processing unit (CPU) 308, a memory 310, a program code 312, and a transceiver 314. The control circuit 306 executes the program code 312 in the memory 310 through the CPU 308, thereby controlling the operation of the communication device 300. The communication device 300 may receive a signal input by a user through the input device 302 (for example, a keyboard or a keypad), and may output images and sounds through the output device 304 (for example, a display or a speaker). The transceiver 314 is used to receive and transmit wireless signals, pass the received signals to the control circuit 306, and wirelessly output the signals generated by the control circuit 306. The communication device 300 in the wireless communication system may also be used to implement Figure 1 AN 100 in.

[0037] Figure 4 According to one embodiment of the disclosed subject matter Figure 3 4. In this embodiment, program code 312 includes application layer 400, layer 3 portion 402, and layer 2 portion 404, and is coupled to layer 1 portion 406. Layer 3 portion 402 may perform radio resource control. Layer 2 portion 404 may perform link control. Layer 1 portion 406 may perform and / or implement physical connectivity.

[0038] One or more frame structures associated with a Radio Access Technology (RAT) and / or a New RAT (NR) (associated with 5G) may accommodate various requirements associated with time resources and / or frequency resources (e.g., ultra-low latency (e.g., about 0.5 ms)) and delay-tolerant services for Machine Type Communication (MTC), from high peak rates for enhanced Mobile Broadband (eMBB) to very low data rates for MTC. Low latency (e.g., short transmission time intervals (TTIs)) and / or mixing / adapting to different TTIs may be important for various applications. In addition to different services and requirements, forward compatibility is also an important consideration in the initial NR frame structure design, as not all NR features are included in the initial phase / release of NR.

[0039] Reducing protocol latency can be an important improvement between different generations / releases, which can improve efficiency and meet new application requirements (e.g., real-time services). An effective method for reducing latency is to reduce the length of the TTI from 10 milliseconds (ms) in 3G to 1 ms in LTE.

[0040] Backward compatibility may not be required in NR systems. The basic parameters may be adjusted so that reducing the number of symbols in a TTI is not the only way to change the TTI length. In an example associated with the LTE basic parameters, 14 orthogonal frequency division multiplexing (OFDM) symbols may be associated with a subcarrier spacing of 1 ms and / or 15 KHz. When the subcarrier spacing is increased to 30 KHz, where the Fast Fourier Transform (FFT) size and / or the cyclic prefix (CP) structure may not change, there may be 28 OFDM symbols in 1 ms, and / or if the number of OFDM symbols in a TTI remains the same, the TTI may become 0.5 ms. Therefore, the design between different TTI lengths may be maintained together with the scalability performed on the subcarrier spacing. One or more of the FFT size, physical resource block (PRB) definition / number, CP design, supportable system bandwidth, subcarrier spacing selection, etc. may be configured to be associated with the subcarrier spacing selection. Since NR is associated with larger system bandwidth and / or larger coherence bandwidth, inclusion of larger subcarrier spacing may be beneficial.

[0041] More details on the NR frame structure, channel design and / or basic parameter design are provided in 3GPP TS 38.211 V15.7.0. Of note, section 4.3.1 of 3GPP TS 38.211 V15.7.0 entitled “Uplink-Downlink Timing Relationship” Figure 4 .3.1-1 is reproduced in this article as Figure 5 The following references one or more parts of 3GPP TS 38.211 V15.7.0:

[0042] 4 Frame structure and physical resources

[0043] 4.1 Overview

[0044] Throughout this specification, unless otherwise specified, the size of each field in the time domain is expressed in time units T c =1 / (Δf max ·N f ) represents, where Δf max =480·10 3 Hz and N f =4096. Constant κ = Ts / T c =64, where T s =1 / (Δf ref ·N f,ref ), Δf ref =15·10 3 Hz and N f,ref =2048.

[0045] 4.2 Basic parameters

[0046] As given in Table 4.2-1, multiple OFDM basic parameters are supported, where μ and the cyclic prefix used for the bandwidth part are obtained from the higher layer parameters subcarrierSpacing and cyclicPrefix respectively.

[0047] Table 4.2-1: Supported basic transmission parameters.

[0048] μ <![CDATA[Δf=2 μ ·15[kHz]]]> Cyclic prefix 0 15 standard 1 30 standard 2 60 Standard, Extended 3 120 standard 4 240 standard

[0049] 4.3 Frame Structure

[0050] 4.3.1 Frame and Subframe

[0051] Downlink and uplink transmissions are organized into f =(Δf max N f / 100)·T c = 10ms duration frame, each frame consists of T sf =(Δf max N f / 1000)·T c =1 ms duration. The number of consecutive OFDM symbols per subframe is Each frame is divided into two equally sized half-frames, each half-frame having five sub-frames, where half-frame 0 consists of sub-frames 0-4 and half-frame 1 consists of sub-frames 5-9.

[0052] On a carrier, there is a set of frames in the uplink and a set of frames in the downlink.

[0053] The uplink frame number i for transmission from the UE will precede the start of the corresponding downlink frame at the UE by T TA =(N TA +N TA,offset )T c Start, where N TA,offset Given by [5, TS 38.213].

[0054] Figure 4 .3.1-1: Uplink-downlink timing relationship.

[0055] The CSI report may be used to reveal information related to channel-related and / or beam-related information between the UE and the base station. The base station may be configured with (and / or may be configured for the UE) one or more groups of CSI-RS resources and CSI report configurations. The UE may measure the configured CSI-RS, derive one or more appropriate quantities and / or contents (e.g., at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), a CSI-RS resource indicator (CRI), a synchronization signal / physical broadcast channel (SS / PBCH) block resource indicator (SS / PBCH Block Resource indicator, SSBRI), L1-RSRP, L1-signal to interference and noise ratio (SINR), etc.), and / or report to the base station the contents indicating the quantity and / or contents. Then, the base station can appropriately and / or therefore schedule the UE, for example, using one or more appropriate MCSs, one or more appropriate beams, probe precoding, and / or an appropriate number of layers. The following references one or more parts of 3GPP TS 38.214 V17.4.0:

[0056] 5.1.5 Quasi-co-location of antenna ports

[0057] The UE may be configured with a list of up to M TCI-State configurations within the higher layer parameter PDSCH-Config to decode the PDSCH based on a detected PDCCH with DCI intended for the UE and a given serving cell, where M depends on the UE capability maxNumberConfiguredTCIstatesPerCC. Each TCI-State contains parameters for configuring a quasi-co-location relationship between one or two downlink reference signals and the DM-RS ports of the PDSCH, the DM-RS ports of the PDCCH, or the CSI-RS ports of the CSI-RS resources. The quasi-co-location relationship is configured by the higher layer parameter qcl-Type1 for the first DL RS and the higher layer parameter qcl-Type2 for the second DL RS (if configured). In the case of two DL RSs, the QCL type will be different, regardless of whether the reference is to the same DL RS or different DL RSs. The quasi-co-location type corresponding to each DL RS is given by the higher layer parameter qcl-Type in QCL-Info and can take one of the following values:

[0058] - 'Type A': {Doppler shift, Doppler spread, average delay, delay spread}

[0059] - 'Type B': {Doppler shift, Doppler spread}

[0060] - 'Type C': {Doppler shift, average delay}

[0061] - 'Type D': {Spatial Rx Parameters}

[0062] The UE may be configured with a list of up to 128 TCI-State configurations within the higher layer parameter dl-OrJoint-TCIStateList in PDSCH-Config to provide quasi-co-located reference signals for the CSI-RS for the DM-RS of the PDSCH and the DM-RS of the PDCCH in the BWP / CC and, where applicable, to provide a reference for determining the UL TX spatial filter for PUSCH and PUCCH resources and SRS in the BWP / CC based on dynamically granted and configured grants.

[0063] …

[0064] For periodic CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info, the UE shall expect the TCI-State to indicate one of the following quasi co-location types:

[0065] - 'Type C' with SS / PBCH blocks and, where applicable, 'Type D' with the same SS / PBCH blocks, where the PCI of the SS / PBCH blocks may be different from the PCI of the serving cell. The UE may assume that the center frequency, SCS, SFN offset of the SS / PBCH blocks from the serving cell and the SS / PBCH blocks with a different PCI from the serving cell are the same, or

[0066] - 'Type C' with SS / PBCH blocks and, where applicable, 'Type D' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition, where the PCI of the SS / PBCH blocks may be different from the PCI of the serving cell. The UE may assume that the center frequency, SCS, SFN offset are the same for the SS / PBCH blocks from the serving cell and for SS / PBCH blocks with a different PCI from the serving cell.

[0067] For periodic / semi-static CSI-RS, if the UE is configured with dl-OrJoint-TCIStateList, the UE may assume that the indicated TCI-State does not apply.

[0068] For non-periodic CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, the UE shall expect the TCI-State indication to have qcl-Type set to 'Type A' for the periodic CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and, when applicable, qcl-Type set to 'Type D' for the same periodic CSI-RS resources.

[0069] For CSI-RS resources in NZP-CSI-RS-ResourceSet that are not configured with the higher layer parameter trs-Info and not configured with the higher layer parameter repetition, the UE shall expect the TCI-State to indicate one of the following quasi co-location types:

[0070] - 'Type A' with a CSI-RS resource in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info, and, where applicable, 'Type D' with the same CSI-RS resource, or

[0071] - 'Type A' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and 'Type D' with SS / PBCH blocks where applicable, where the PCI of the SS / PBCH blocks may be different from the PCI of the serving cell. The UE may assume that the center frequency, SCS, SFN offset are the same for the SS / PBCH blocks from the serving cell and for the SS / PBCH blocks with a different PCI from the serving cell, or

[0072] - 'Type A' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info and, if applicable, 'Type D' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition, or

[0073] - 'Type B' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info when 'Type D' is not applicable.

[0074] For CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition, the UE shall expect the TCI-State to indicate one of the following quasi co-location types:

[0075] - 'Type A' with a CSI-RS resource in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info, and, where applicable, 'Type D' with the same CSI-RS resource, or

[0076] - 'Type A' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info and, if applicable, 'Type D' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition, or

[0077] - 'Type C' with SS / PBCH blocks, and 'Type D' with the same SS / PBCH blocks when applicable, the reference RS may additionally be a SS / PBCH block with a PCI different from that of the serving cell. The UE may assume that the center frequency, SCS, SFN offset of the SS / PBCH blocks from the serving cell and the SS / PBCH blocks with a PCI different from that of the serving cell are the same.

[0078] …

[0079] 5.1.6 UE procedures for receiving reference signals

[0080] 5.1.6.1 CSI-RS Reception Procedure

[0081] The CSI-RS defined in Section 7.4.1.5 of [4, TS 38.211] can be used for time / frequency tracking, CSI calculation, L1-RSRP calculation, L1-SINR calculation, mobility and tracking during fast SCell activation.

[0082] For CSI-RS resources associated with a NZP-CSI-RS-ResourceSet with the higher layer parameter repetition set to 'on', the UE shall not expect CSI-RS to be configured on symbols where the UE is also configured to monitor the CORESET, while for other NZP-CSI-RS-ResourceSet configurations, if the UE is configured with CSI-RS resources and a search space set associated with the CORESET in the same OFDM symbol, then if 'Type D' is applicable, the UE may assume that the CSI-RS and PDCCH DM-RS transmitted in all search space sets associated with the CORESET are quasi-co-located with 'Type D'. If the CORESET is activated with two TCI states, the UE may assume the first TCI state of the CORESET as the preset QCL assumption for the CSI-RS. This also applies to the case where the CSI-RS and the CORESET are in different in-band component carriers, if 'Type D' is applicable. Furthermore, the UE should not expect CSI-RS to be configured in PRBs that overlap with those of the CORESET in the OFDM symbols occupied by the search space set.

[0083] The UE is not expected to receive CSI-RS and SIB1 messages in overlapping PRBs in the OFDM symbol in which SIB1 is transmitted.

[0084] If the UE is configured with DRX,

[0085] - if the UE is configured to listen to DCI format 2_6 and is configured to report CSI by the higher layer parameter ps-TransmitOtherPeriodicCSI when drx-onDurationTimer in DRX-Config is not started, with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to a quantity other than 'cri-RSRP' and 'ssb-Index-RSRP', then the latest CSI measurement opportunity occurs in the DRX active time or during the duration indicated by drx-onDurationTimer in DRX-Config that is also outside the DRX active time range of the CSI to be reported;

[0086] - if the UE is configured to listen to DCI format 2_6 and is configured to report L1-RSRP by the higher layer parameter ps-TransmitPeriodicL1-RSRP when drx-onDurationTimer in DRX-Config is not started, with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to cri-RSRP, then the latest CSI measurement opportunity occurs in the DRX active time or during the duration indicated by drx-onDurationTimer in DRX-Config that is also outside the DRX active time range for the CSI to be reported;

[0087] - Otherwise, the latest CSI measurement opportunity occurs in the DRX active time of the CSI to be reported.

[0088] 5.1.6.1.2 CSI-RS for L1-RSRP and L1-SINR calculation

[0089] If the UE is configured with a NZP-CSI-RS-ResourceSet with the higher layer parameter repetition set to 'on', the UE may assume that the CSI-RS resources within the NZP-CSI-RS-ResourceSet described in section 5.2.2.3.1 are transmitted using the same downlink spatial domain transmit filter where the CSI-RS resources in the NZP-CSI-RS-ResourceSet are transmitted in different OFDM symbols. If repetition is set to 'off', the UE shall not assume that the CSI-RS resources within the NZP-CSI-RS-ResourceSet are transmitted using the same downlink spatial domain transmit filter.

[0090] If the UE is configured with a CSI-ReportConfig with reportQuantity set to 'cri-RSRP', 'cri-SINR' or 'none', and if the CSI-ResourceConfig for channel measurement (higher layer parameter resourcesForChannelMeasurement) contains an NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition but not with the higher layer parameter trs-Info, then the UE shall only be configured with the same number (1 or 2) of ports with the higher layer parameter nrofPorts for all CSI-RS resources in the set. If the UE is configured with CSI-RS resources in the same OFDM symbol as an SS / PBCH block, then the UE may assume that the CSI-RS and SS / PBCH blocks are quasi-co-located with 'Type D' if 'Type D' applies. Furthermore, the UE shall not expect CSI-RS to be configured in PRBs that overlap with those of SS / PBCH blocks, and the UE shall expect the same subcarrier spacing for both CSI-RS and SS / PBCH blocks.

[0091] …

[0092] 5.2 UE Procedure for Reporting Channel State Information (CSI)

[0093] 5.2.1 Channel State Information Framework

[0094] The procedures for aperiodic CSI reporting described in this section assume that the CSI reporting is triggered by DCI format 0_1, but they apply equally to CSI reporting triggered by DCI format 0_2 by applying the higher layer parameter reportTriggerSizeDCI-0-2 instead of reportTriggerSize.

[0095] The UE can use time and frequency resources to report CSI controlled by the gNB. CSI can consist of channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SS / PBCH block resource indicator (SSBRI), layer indicator (LI), rank indicator (RI), L1-RSRP, L1-SINR or CapabilityIndex.

[0096] For CQI, PMI, CRI, SSBRI, LI, RI, L1-RSRP, L1-SINR, Capability[Set]Index, the UE is configured by higher layers with: N≥1 CSI-ReportConfig reporting settings, M≥1 CSI-ResourceConfig resource settings, and one or two trigger state lists (given by higher layer parameters CSI-AperiodicTriggerStateList and CSI-SemiPersistentOnPUSCH-TriggerStateList). Each trigger state in the CSI-AperiodicTriggerStateList contains a list of associated CSI-ReportConfigs for the channel and optionally for the interference indication resource set ID. Each trigger state in the CSI-SemiPersistentOnPUSCH-TriggerStateList contains one associated CSI-ReportConfig.

[0097] 5.2.1.1 Report Settings

[0098] Each reporting configuration CSI-ReportConfig is associated to a single downlink BWP given in the associated CSI-ResourceConfig for channel measurement (indicated by the higher layer parameter BWP-Id) and contains parameters for one CSI reporting band: codebook configuration including codebook subset restrictions, time domain behavior, frequency granularity for CQI and PMI, measurement restriction configuration, and CSI related quantities to be reported by the UE, such as Layer Indicator (LI), L1-RSRP, L1-SINR, CRI and SSBRI (SSB Resource Indicator) and CapabilityIndex.

[0099] The time domain behavior of the CSI-ReportConfig is indicated by the higher layer parameter reportConfigType and can be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH' or 'periodic'. For 'periodic' and 'semiPersistentOnPUCCH' / 'semiPersistentOnPUSCH' CSI reporting, the configured periodicity and slot offset apply to the underlying parameters of the UL BWP on which the CSI report is configured to be transmitted. The higher layer parameter reportQuantity indicates the CSI-related, L1-RSRP-related, L1-SINR-related or CapabilityIndex-related quantity to be reported. reportFreqConfiguration indicates the reporting granularity in the frequency domain, including the CSI reporting band and whether the PMI / CQI report is wideband or subband. The timeRestrictionForChannelMeasurements parameter in CSI-ReportConfig can be configured to enable time domain restrictions for channel measurements, and timeRestrictionForInterferenceMeasurements can be configured to enable time domain restrictions for interference measurements. CSI-ReportConfig may also contain CodebookConfig, which contains configuration parameters for Type-I, Type II, enhanced Type IICSI or further enhanced Type II port selection (including codebook subset restriction when applicable) and group-based reporting configuration. If reportConfigType is set to 'aperiodic', the UE is not expected to be configured with CSI reporting settings associated with dormant DL BWP.

[0100] 5.2.1.2 Resource Settings

[0101] Each CSI resource setting CSI-ResourceConfig contains a configuration of a list of S≥1 CSI resource sets (given by the higher layer parameter csi-RS-ResourceSetList), where the list includes references to either or both of the NZP CSI-RS resource set and the SS / PBCH block set, or the list includes references to the CSI-IM resource set. Each CSI resource setting is located in a DL BWP identified by the higher layer parameter BWP-id, and all CSI resource settings linked to a CSI report setting have the same DL BWP.

[0102] The time domain behavior of the CSI-RS resources within a CSI resource setting is indicated by the higher layer parameter resourceType and can be set to aperiodic, periodic or semi-static. For periodic and semi-static CSI resource settings, when the UE is configured with groupBasedBeamReporting-r17, the number of configured CSI resource sets is S=2, otherwise, the number of configured CSI-RS resource sets is limited to S=1. For periodic and semi-static CSI resource settings, the configured periodicity and time slot offset are given in the basic parameters of its associated DL BWP given by BWP-id. When the UE is configured with multiple CSI-ResourceConfigs constituting the same NZP CSI-RS resource ID, the same time domain behavior should be configured for the CSI-ResourceConfigs. When the UE is configured with multiple CSI-ResourceConfigs constituting the same CSI-IM resource ID, the same time domain behavior should be configured for the CSI-ResourceConfigs. All CSI resource settings linked to a CSI reporting setting should have the same time domain behavior.

[0103] The following are configured via higher layer signaling of one or more CSI resource settings for channel and interference measurements:

[0104] - CSI-IM resources for interference measurement as described in Section 5.2.2.4.

[0105] - NZP CSI-RS resources for interference measurement as described in Section 5.2.2.3.1.

[0106] - NZP CSI-RS resources for channel measurement as described in Section 5.2.2.3.1.

[0107] The UE may assume that the NZP CSI-RS resources for channel measurement and the CSI-IM resources for interference measurement configured for one CSI report are QCLed per resource with respect to 'Type D'. When the NZP CSI-RS resources are used for interference measurement, the UE may assume that the NZP CSI-RS resources for channel measurement and the CSI-IM resources or the NZP CSI-RS resources for interference measurement configured for one CSI report are QCLed per resource with respect to 'Type D'.

[0108] For L1-SINR measurement:

[0109] - When one resource setting is configured, the resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is used for channel and interference measurements on NZP CSI-RS for L1-SINR calculation. The UE may assume the same 1-port NZP CSI-RS resource with density 3RE / RB for channel and interference measurements.

[0110] - When two resource settings are configured, the first resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is for channel measurement on SSB or NZP CSI-RS, and the second (given by the higher layer parameter csi-IM-ResourcesForInterference or the higher layer parameter nzp-CSI-RS-ResourcesForInterference) is for interference measurement performed on CSI-IM or on 1-port NZP CSI-RS with density 3RE / RB, wherein each SSB or NZP CSI-RS resource used for channel measurement is associated with one CSI-IM resource or one NZP CSI-RS resource used for interference measurement by ordering the SSB or NZP CSI-RS resources used for channel measurement and the CSI-IM resources or NZP CSI-RS resources used for interference measurement in the corresponding resource set. The number of SSB or CSI-RS resources used for channel measurement is equal to the number of CSI-IM resources or the number of NZP CSI-RS resources used for interference measurement.

[0111] -The UE may apply SSB or a ‘Type D’ RS configured with qcl-Type set to ‘Type D’ to the NZP CSI-RS resources for channel measurement as a reference RS for determining the ‘Type D’ hypothesis of the corresponding CSI-IM resources or the corresponding NZP CSI-RS resources for interference measurement for one CSI reporting configuration.

[0112] - The UE may expect the NZP CSI-RS resource set for channel measurement and the NZP-CSI-RS resource set for interference measurement (if any) to be configured with the higher layer parameter repetition.

[0113] 5.2.1.3 (Void)

[0114] 5.2.1.4 Report Configuration

[0115] The UE shall calculate the CSI parameters (if reported) assuming the following dependencies between them:

[0116] - LI should be calculated conditional on reported CQI, PMI, RI and CRI

[0117] - CQI should be calculated conditional on reported PMI, RI and CRI

[0118] - PMI should be calculated conditional on reported RI and CRI

[0119] - The RI should be calculated conditioned on the reported CRI.

[0120] The reporting configuration for CSI can be aperiodic (using PUSCH), periodic (using PUCCH), or semi-static (using PUSCH activated by PUCCH and DCI). CSI-RS resources can be periodic, semi-static, or aperiodic. Table 5.2.1.4-1 shows the supported combinations of CSI reporting configurations and CSI-RS resource configurations and how CSI reporting is triggered for each CSI-RS resource configuration. Periodic CSI-RS is configured by higher layers. Semi-static CSI-RS is activated and deactivated as described in Section 5.2.1.5.2. Aperiodic CSI-RS is configured and triggered / activated as described in Section 5.2.1.5.1.

[0121] …

[0122] When the UE is configured with the higher layer parameter NZP-CSI-RS-ResourceSet and when the higher layer parameter repetition is set to 'off', the UE shall determine the CRI from the set of supported CRI values ​​as defined in section 6.3.1.1.2 of [5, TS 38.212] and report the number in each CRI report. When the higher layer parameter repetition of the CSI-RS resource set used for channel measurement is set to 'on', the CRI of the CSI-RS resource set used for channel measurement shall not be reported. When the higher layer parameter codebookType is set to 'typeII', 'typeII-PortSelection', 'typeII-r16' and 'typeII-PortSelection-r16' or 'typeII-PortSelection-r17', CRI reporting is not supported.

[0123] For periodic or semi-static CSI reporting on PUCCH, the periodicity T CSI (measured in the time slot) and the time slot offset T offset Configured by the higher layer parameter reportSlotConfig. Unless otherwise specified, the UE shall f And the number of time slots in a frame is The CSI report is transmitted in the frame of

[0124]

[0125] where μ is the SCS configuration of the UL BWP on which the CSI report is transmitted.

[0126] For semi-static CSI reporting on PUSCH, the periodicity T CSI (measured in timeslot) is configured by the higher layer parameter reportSlotConfig. Unless otherwise specified, the UE shall f And the number of time slots in a frame is The CSI report is transmitted in the frame of

[0127]

[0128] in and They are the SFN and the number of intra-frame slots for the initial semi-static PUSCH transmission according to the activation DCI.

[0129] For semi-static or aperiodic CSI reporting on PUSCH, the allowed slot offsets are configured by the following higher layer parameters:

[0130] - if triggered / activated by DCI format 0_2 and the higher layer parameter reportSlotOffsetListDCI-0-2 is configured, the allowed slot offsets are configured by reportSlotOffsetListDCI-0-2, and

[0131] - if triggered / activated by DCI format 0_1 ​​and the higher layer parameter reportSlotOffsetListDCI-0-1 is configured, then the allowed slot offsets are configured by reportSlotOffsetListDCI-0-1, and

[0132] - Otherwise, the allowed slot offsets are configured by the higher layer parameter reportSlotOffsetList.

[0133] The offset is selected in the activating / triggering DCI.

[0134] For CSI reporting, the UE may be configured via higher layer signaling with one of two possible subband sizes, where according to Table 5.2.1.4-2, the subband is defined as consecutive PRBs and depends on the total number of PRBs in the bandwidth part.

[0135] …

[0136] The reportFreqConfiguration contained in CSI-ReportConfig indicates the frequency granularity of the CSI report. The CSI report configuration defines the CSI reporting frequency band as a subset of the subbands of the bandwidth part, where reportFreqConfiguration indicates:

[0137] -csi-ReportingBand, which is a contiguous or non-contiguous subset of subbands in the bandwidth part for which CSI will be reported.

[0138] - It is not expected that a UE is configured with a CSI-ReportingBand containing subbands where the CSI-RS resources linked to the CSI reporting setup have a frequency density of one CSI-RS port per PRB in the subband that is less than the configured density of the CSI-RS resources.

[0139] - If a CSI-IM resource is linked to a CSI reporting setting, the UE is not expected to be configured with a csi-ReportingBand containing subbands where not all PRBs in the subband have CSI-IM REs present.

[0140] - Wideband CQI or subband CQI reporting, as configured by the higher layer parameter cqi-FormatIndicator. When wideband CQI reporting is configured, a wideband CQI is reported for each codeword of the entire CSI reporting band. When subband CQI reporting is configured, one CQI per codeword is reported for each subband in the CSI reporting band.

[0141] - Wideband PMI or subband PMI reporting, as configured by the higher layer parameter pmi-FormatIndicator. When wideband PMI reporting is configured, wideband PMI is reported for the entire CSI reporting band. When subband PMI reporting is configured, a single wideband indication is reported for the entire CSI reporting band except for 2 antenna ports (i in Section 5.2.2.2). 1 ) and reports one subband indication for each subband in the CSI reporting band (i in Section 5.2.2.2 2 ). When the subband PMI is configured with 2 antenna ports, the PMI is reported for each subband in the CSI reporting band.

[0142] - If codebookType is set to 'typeII-r16' or 'typeII-PortSelection-r16' or 'typeII-PortSelection-r17', the UE is not expected to be configured with pmi-FormatIndicator.

[0143] The CSI reporting setting is said to have wideband frequency granularity in the following cases:

[0144] -reportQuantity is set to 'cri-RI-PMI-CQI' or 'cri-RI-LI-PMI-CQI', cqi-FormatIndicator is set to 'widebandCQI' and pmi-FormatIndicator is set to 'widebandPMI', or

[0145] -reportQuantity is set to 'cri-RI-PMI-CQI', codebookType is set to 'typeII-PortSelection-r17', with M=1 and cqi-FormatIndicator is set to 'widebandCQI', or

[0146] -reportQuantity is set to 'cri-RI-i1', or

[0147] -reportQuantity is set to 'cri-RI-CQI' or 'cri-RI-i1-CQI' and cqi-FormatIndicator is set to 'widebandCQI', or

[0148] -reportQuantity is set to 'cri-RSRP' or 'ssb-Index-RSRP' or 'cri-SINR' or 'ssb-Index-SINR' or 'cri-RSRP-CapabilityIndex' or 'ssb-Index-RSRP-CapabilityIndex' or 'cri-SINR-CapabilityIndex' or 'ssb-Index-SINR-CapabilityIndex'

[0149] Otherwise, the CSI reporting settings are said to have sub-band frequency granularity.

[0150] The CSI report setting of codebookType is set to 'typeI-SinglePan' as described in Section 5.2.1.4.1 and the corresponding CSI-RS resource set for channel measurement is configured with two resource groups and N resource pairs, and can be configured with wideband frequency granularity only when csi-ReportMode is set to 'Mode1' and numberOfSingleTRP-CSI-Mode1 is set to X=0, as described in Section 5.2.1.4.2.

[0151] If the UE is configured with a CSI reporting setup for a bandwidth part with less than 24 PRBs, the CSI reporting setup is expected to have wideband frequency granularity and, if applicable, the higher layer parameter codebookType is set to 'typeI-SinglePanel'.

[0152] The first subband size is given by Given, and if Then the size of the last subband is given by Given, and if By Given

[0153] If the UE is configured with semi-static CSI reporting, the UE shall report CSI when both CSI-IM and NZP CSI-RS resources are configured as periodic or semi-static. If the UE is configured with aperiodic CSI reporting, the UE shall report CSI when both CSI-IM and NZP CSI-RS resources are configured as periodic, semi-static or aperiodic.

[0154] A UE configured with DCI format 0_1 ​​or 0_2 does not expect multiple CSI report triggers with the same CSI-ReportConfigId.

[0155] 5.2.1.4.1 Resource Settings Configuration

[0156] For aperiodic CSI, each trigger state configured using the higher layer parameter CSI-AperiodicTriggerState is associated with one or more CSI-ReportConfigs, where a CSI-ReportConfig not configured with groupBasedBeamReporting-r17 is linked to a periodic or semi-static or aperiodic resource setup:

[0157] - When configuring a resource setting, the resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is either a channel measurement for L1-RSRP or a channel and interference measurement for L1-SINR calculation.

[0158] - When two resource settings are configured, the first resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is for channel measurement and the second one (given by the higher layer parameter csi-IM-ResourcesForInterference or the higher layer parameter nzp-CSI-RS-ResourcesForInterference) is for interference measurements performed on CSI-IM or NZP CSI-RS.

[0159] - When three resource settings are configured, the first resource setting (higher layer parameter resourcesForChannelMeasurement) is for channel measurement, the second (given by the higher layer parameter csi-IM-ResourcesForInterference) is for CSI-IM based interference measurement, and the third (given by the higher layer parameter nzp-CSI-RS-ResourcesForInterference) is for NZP CSI-RS based interference measurement.

[0160] For aperiodic CSI, and for periodic and semi-static CSI resource settings, each trigger state configured using the higher layer parameter CSI-AperiodicTriggerState is associated with one or more CSI-ReportConfigs, where a CSI-ReportConfig configured with groupBasedBeamReporting-r17 is linked to the periodic or semi-static setting:

[0161] - When one resource setting is configured, the resource setting is given by resourcesForChannelMeasurement for L1-RSRP measurement. In this case, the number of CSI resource sets configured in the resource setting is S=2.

[0162] For aperiodic CSI, and for aperiodic CSI resource settings, each trigger state configured using the higher layer parameter CSI-AperiodicTriggerState is associated with one or more CSI-ReportConfigs, where the CSI-ReportConfig configured with groupBasedBeamReporting-r17 is associated with resourcesForChannel and resourcesForChannel2 corresponding to the first resource set and the second resource set, respectively, for L1-RSRP measurement.

[0163] For semi-static or periodic CSI, each CSI-ReportConfig is linked to a periodic or semi-static resource setting:

[0164] - When one resource setting is configured (given by the higher layer parameter resourcesForChannelMeasurement), the resource setting is either channel measurement for L1-RSRP or channel and interference measurement for L1-SINR calculation.

[0165] - When two resource settings are configured, the first resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is for channel measurement and the second resource setting (given by the higher layer parameter csi-IM-ResourcesForInterference) is for interference measurements performed on CSI-IM. For L1-SINR calculation, the second resource setting (given by the higher layer parameter csi-IM-ResourcesForInterference or the higher layer parameter nzp-CSI-RS-ResourceForInterference) is for interference measurements performed on CSI-IM or NZP CSI-RS.

[0166] It is not expected that a UE is configured with more than one CSI-RS resource in the channel measurement resource set for CSI-ReportConfig with the higher layer parameter codebookType set to 'typeII', 'typeII-PortSelection', 'typeII-r16', 'typeII-PortSelection-r16' or 'typeII-PortSelection-r17'. It is not expected that a UE is configured with more than 64 NZP CSI-RS resources and / or SS / PBCH block resources in the channel measurement resource set for CSI-ReportConfig with the higher layer parameter reportQuantity set to 'none', 'cri-RI-CQI', 'cri-RSRP', 'ssb-Index-RSRP', 'cri-SINR' or 'ssb-Index-SINR', CRI-RSRP-index', ssb-index-RSRP-index', 'CRI-SINR-index' or 'ssb-index-SINR-index'. If interference measurement is performed on CSI-IM, each CSI-RS resource used for channel measurement is associated with a CSI-IM resource resource by sorting the CSI-RS resources and CSI-IM resources in the corresponding resource set. The number of CSI-RS resources used for channel measurement is equal to the number of CSI-IM resources.

[0167] For channel measurement with 2≤K s NZP CSI-RS resource sets with ≤8 resources can be configured with two resource groups and N∈{1,2} resource pairs, where group 1 has K 1 ≥1 resource and K in group 2 2 ≥ 1 resource, so that K 1 +K 2=K s Each resource pair consists of one resource from group 1 and one resource from group 2. The same resource may be associated with two resource pairs in frequency range 1 but not in frequency range 2.

[0168] In addition to L1-SINR, if interference measurement is performed on NZP CSI-RS, it is not expected that the UE is configured with more than one NZP CSI-RS resource in the associated resource set within the resource settings for channel measurement. In addition to L1-SINR, a UE configured with the higher layer parameter nzp-CSI-RS-ResourcesForInterference is expected to configure no more than 18 NZP CSI-RS ports in the NZP SI-RS resource set.

[0169] For CSI measurements other than L1-SINR, the UE assumes:

[0170] - Each NZP CSI-RS port configured for interference measurement corresponds to an interference transmission layer.

[0171] - All interfering transport layers used for interference measurement on the NZP CSI-RS port take into account the associated EPRE ratio configured in 5.2.2.3.1;

[0172] - Other interference signals on REs of NZP CSI-RS resources for channel measurement, NZP CSI-RS resources for interference measurement, or CSI-IM resources for interference measurement.

[0173] For L1-SINR measurement using dedicated interference measurement resources, the UE assumes:

[0174] - The total received power on the dedicated NZP CSI-RS resources for interference measurement or the dedicated CSI-IM resources for interference measurement corresponds to the interference and noise.

[0175] 5.2.1.4.2 Report quantity configuration

[0176] The UE may be configured with a CSI-ReportConfig with the higher layer parameter reportQuantity set to any of the following: 'none', 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI'', cri-RSRP'', cri-SINR'', ssb-Index-RSRP'', ssb-Index-SINR', 'cri-RI-LI-PMI-CQI'', cri-RSRP-Index'', ssb-Index-RSRP-Index'', cri-SINR-Index' or 'ssb-Index-SINR-Index'.

[0177] If the UE is configured with a CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'none', the UE shall not report any quantity of the CSI-ReportConfig.

[0178] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-PMI-CQI' or 'cri-RI-LI-PMI-CQI', the UE shall report the preferred precoder matrix for the entire reporting band or the preferred precoder matrix for each subband according to section 5.2.2.2.

[0179] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-i1',

[0180] - for the CSI-ReportConfig, the UE is expected to be configured with the higher layer parameter codebookType set to 'typeI-SinglePanel' and pmi-FormatIndicator set to 'widebandPMI' and,

[0181] - The UE shall report a single wideband indication for the entire CSI reporting band (i in Section 5.2.2.2.1 1 ) composed of PMI.

[0182] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-i1-CQI', then

[0183] - for the CSI-ReportConfig, the UE is expected to be configured with the higher layer parameter codebookType set to 'typeI-SinglePanel' and pmi-FormatIndicator set to 'widebandPMI' and,

[0184] - The UE shall report a single wideband indication for the entire CSI reporting band (i in Section 5.2.2.2.1 1 ) is composed of PMI. p ≥ 1 pre-decoder i 1 (corresponds to the same i in Section 5.2.2.2.1 1 But different i 2 ) is used as the condition to calculate the CQI, where the UE assumes that the N p A predecoder is randomly selected from a set of predecoders, where the PRG size used for CQI calculation is configured by a higher layer parameter pdsch-BundleSizeForCSI.

[0185] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-CQI', then

[0186] - In case the UE is configured with the higher layer parameter non-PMI-PortIndication contained in CSI-ReportConfig, the r ports are indicated in a layer sorted order of rank r and each CSI-RS resource in the CSI resource setting is linked to the CSI-ReportConfig based on the order of the associated NZP-CSI-RS-ResourceId in the linked CSI resource setting for channel measurement given by the higher layer parameter resourcesForChannelMeasurement. The configured higher layer parameter non-PMI-PortIndication contains a sequence of port indices in is the CSI-RS port index associated with rank ν and R∈{1,2,...,P}, where P∈{1,2,4,8} is the number of ports in the CSI-RS resource. The UE shall only report RI corresponding to the configured field of PortIndexFor8Ranks.

[0187] - If the UE is not configured with the higher layer parameter non-PMI-PortIndication, then for each CSI-RS resource in the CSI resource setting linked to CSI-ReportConfig, the UE assumes the CSI-RS port index is associated with v=1,2,...,P, where P∈{1,2,4,8} is the number of ports in the CSI-RS resource.

[0188] - When computing the CQI of the rank, the UE shall use the port indicated by the rank for the selected CSI-RS resource. The precoder used for the indicated port shall be assumed to be The scaled identity matrix.

[0189] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index' or 'ssb-Index-RSRP-Index',

[0190] - If the UE is configured with the higher layer parameter groupBasedBeamReporting set to 'disabled', the UE does not need to update measurements of more than 64 CSI-RS and / or SSB resources and the UE shall report a different CRI or SSBRI for each reporting setting in a single report nrofReportedRS (configured by higher layers).

[0191] - If the UE is configured with the higher layer parameter groupBasedBeamReporting set to 'enabled', the UE does not need to update measurements of more than 64 CSI-RS and / or SSB resources, and the UE shall report two different CRIs or SSBRIs for each reporting setting in a single reporting instance, where the CSI-RS and / or SSB resources can be simultaneously received by the UE using a single spatial domain receive filter or multiple simultaneous spatial domain receive filters.

[0192] -If the UE is configured with the higher layer parameter groupBasedBeamReporting-r17, the UE does not need to update the measurement of more than 64 CSI-RS and / or SSB resources and the UE shall report the groups of two CRIs or SSBRIs for selecting one CSI-RS or SSB from each of the two CSI resource sets for the reporting setup in a single reporting instance nrofReportedGroups (if configured), where the CSI-RS and / or SSB resources of each group can be received by the UE simultaneously.

[0193] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-SINR'', ssb-Index-SINR'', cri-SINR-Index' or 'ssb-Index-SINR-Index',

[0194] - If the UE is configured with the higher layer parameter groupBasedBeamReporting set to 'disabled', the UE shall report a different CRI or SSBRI for each reporting setting in a single report nrofReportedRS (configured by higher layers).

[0195] - If the UE is configured with the higher layer parameter groupBasedBeamReporting set to 'enabled', the UE shall report two different CRIs or SSBRIs for each reporting setting in a single reporting instance, where CSI-RS and / or SSB resources may be received simultaneously by the UE.

[0196] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RSRP'', cri-RI-PMI-CQI'', cri-RI-i1'', cri-RI-i1-CQI'', cri-RI-CQI'', 'cri-RI-LI-PMI-CQI'', 'cri-SINR' or 'cri-SINR-Index' and K s >1 resource is configured in the corresponding resource set for channel measurement, the UE shall derive CSI parameters other than CRI conditioned on the reported CRI, where CRI k (k ≥ 0) corresponds to the configured (k+1)th entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet for channel measurement, and corresponds to the (k+1)th entry of the associated csi-IM-Resource in the corresponding csi-IM-ResourceSet for interference measurement (if configured) or the (k+1)th entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet (if configured for CSI-ReportConfig with reportQuantity set to "cri-SINR" or "cri-SINR-Index"). If K is configured s = 2 CSI-RS resources, each resource will contain at most 16 CSI-RS ports. <K s≤8 CSI-RS resources, each resource will contain at most 8 CSI-RS ports.

[0197] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-PMI-CQI' or 'cri-RI-LI-PMI-CQI' and the corresponding NZP-CSI-RS-ResourceSet for channel measurement is configured with K s ≥2 resources, two resource groups, and N resource pairs, where group 1 has K 1 ≥1 resource, K in the second group 2 ≥1 resource, then:

[0198] -Subject to UE capabilities, each resource can contain up to 32 CSI-RS ports. i resources (i=1, 2) of two resource groups, if max{K 1 , K 2}=1, the resources in NZP-CSI-RS-ResourceSet will contain at most 32 CSI-RS ports; if max{K 1 , K 2}=2, each resource in NZP-CSI-RS-ResourceSet will contain at most 16 CSI-RS ports; if 2 <max{K 1 , K 2}<8, each resource in NZP-CSI-RS-ResourceSet will contain at most 8 CSI-RS ports.

[0199] - Each of the N resource pairs is associated with a CRI value.

[0200] -CSI-ReportConfig can be configured with higher layer parameter sharedCMR. 1 and M 2 are the number of resources in Group 1 and Group 2 associated with CRI values ​​other than the N CRIs defined above, respectively, where M = M 1 +M 2 , so that the total number of CRI values ​​configured for CSI-ReportConfig is M+N.

[0201] - If the higher layer parameter csi-ReportMode is set to 'Mode1' and the higher layer parameter numberOfSingleTRP-CSI-Mode1 is set to X∈{0}, then M 1 =M 2 =0; otherwise,

[0202] - if the higher layer parameter csi-ReportMode is set to 'Mode1' and the higher layer parameter numberOfSingleTRP-CSI-Mode1 setting is set to X∈{1,2}, or if csi-ReportMode is set to 'Mode2',

[0203] - If sharedCMR is configured: M 1 =K 1 And M 2 =K 2 ;otherwise

[0204] - If sharedCMR is not configured, only the resources in group 1 and group 2 that are not referenced in any resource pair are associated with the M CRI values ​​in addition to the N CRIs defined above.

[0205] -If interference measurement is performed on CSI-IM, M+N resources are configured in the corresponding csi-IM-ResourceSet. The M resources for channel measurement defined above are associated with the first N CSI-IM resources resource-by-resource by ordering the CSI-RS resources and CSI-IM resources in the corresponding resource set. The N resource pairs for channel measurement are associated with the last N CSI-IM resources by ordering the CSI-RS resource pairs and the CSI-IM resources in the CSI-IM resource set. The UE may assume that the two CSI-RS resources in the resource pair for channel measurement and the associated CSI-IM resources for interference measurement are QCLed resource-by-resource with respect to 'Type D'.

[0206] - Except for the NZP CSI-RS resources configured in the N resource pairs for channel measurement, the UE is not expected to be configured with NZP CSI-RS for interference measurement.

[0207] - for the CSI-ReportConfig, the UE is expected to be configured with the higher layer parameter codebookType set to 'typeI-SinglePanel', and

[0208] - The UE shall derive CSI parameters other than CRI conditioned on the reported CRI as follows:

[0209] - If the higher layer parameter csi-ReportMode is set to 'Mode1' and the higher layer parameter numberOfSingleTRP-CSI-Mode1 is set to X∈{0,1,2}, then X+1 CRIs are reported:

[0210] -A CRIk 1 (k 1 ≥0) corresponds to the configured (kth) of the associated N resource pairs in the corresponding CSI-RS resource set for channel measurement. 1 +1) entries, and the (M+kth 1 +1) entries (if configured). The UE reports the 1 +1) resource pairs; and

[0211] - If X = 1, then a CRIk 2 (k 2 ≥0) corresponds to the configured (kth) of the associated M resources in the corresponding CSI-RS resource set for channel measurement 2 +1) entries, and the corresponding CSI-IM resource set (k 2 +1) entry (if configured). The UE shall 2 Report one RI, one PMI, one LI (if configured), and one or two CQIs for the condition; or

[0212] - If X = 2, then a CRIk 2 (k 2 ≥0) corresponds to the associated M in the first group of the corresponding CSI-RS resource set for channel measurement 1 The kth resource configured 2 +1) entries, and the (kth) associated resource in the corresponding CSI-IM resource set 2 +1) entry (if configured), and a CRIk 3 (k 3 ≥0) corresponds to the associated M in the second group of the corresponding CSI-RS resource set used for channel measurement 2 The kth resource configured 3 +1) entry, and the (Mth) entry corresponding to the CSI-IM resource set 1 +k 3 +1) entry (if configured). The UE shall report the 2 One RI, one PMI, one LI (if configured) and one or two CQIs, and one RI, one PMI, one LI (if configured) and one or two CQIs, and one LI ... CQI (if configured) 3 One RI, one PMI, one LI (if configured) and one or two CQIs are conditional.

[0213] - If the higher layer parameter csi-ReportMode is set to 'Mode2', then a CRIk is reported 1 (k 1 ≥0), which corresponds to the (k 1 + 1)-th entry of M + N resources or resource pairs in the corresponding CSI-RS resource set for channel measurement, and the (k 1 + 1)-th entry of the associated resources in the corresponding CSI-IM resource set (if configured). The first M code points of the CRI correspond to the resources associated with the first and second groups. The last N code points of the CRI correspond to the N configured resource pairs. The UE shall report one RI, one PMI, one LI (if configured), and one or two CQIs conditioned on CRIk 1 (if k 1 < M); or otherwise, shall report two RIs, two PMIs, two LIs (if configured), and one CQI respectively associated with the resources in the first group and the resources in the second group of the (k 1 - M + 1)-th resource pair.

[0214] - For the reported CRI corresponding to the entries of the N resource pairs configured in the corresponding CSI-RS resource set for channel measurement:

[0215] - The UE shall not report a total number of layers greater than four.

[0216] - The two RIs are reported with a joint RI index corresponding to one of the following four rank combinations: {1, 1}, {1, 2}, {2, 1}, {2, 2}.

[0217] - The CodebookConfig in CSI-ReportConfig can be configured with two RI limit parameters. One parameter applies to the reported RI when conditioned on the CRI corresponding to the entries of the M CSI-RS resources defined above. The other parameter applies to the reported joint RI index when conditioned on the CRI corresponding to the entries of the N resource pairs, and indicates one or more of the four rank combinations allowed for the reported PMI and RI.

[0218] - The CodebookConfig in CSI-ReportConfig can be configured with two codebook subset restrictions. The first restriction applies to the reported PMI associated with the CSI-RS resources in the first group. The second restriction applies to the reported PMI associated with the CSI-RS resources in the second group.

[0219] If the UE is configured with a CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'ssb-Index-RSRP' or 'ssb-Index-RSRP-Index', the UE shall report the SSBRI, where SSBRI k (k≥0) corresponds to the configured (k+1)th entry of the associated csi-SSB-ResourceList in the corresponding CSI-SSB-ResourceSet.

[0220] If the UE is configured with a CSI-ReportConfig with the higher layer parameter reportQuantity set to 'ssb-Index-SINR' or 'ssb-Index-SINR-Index', the UE shall derive the L1-SINR conditioned on the reported SSBRI, where SSBRI k (k≥0) corresponds to the configured (k+1)th entry of the associated csi-SSB-ResourceList in the corresponding CSI-SSB-ResourceSet for channel measurement and the (k+1)th entry of the associated csi-IM-Resource in the corresponding csi-IM-ResourceSet for interference measurement (if configured) or the (k+1)th entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet (if configured).

[0221] If the UE is configured with a CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI' or 'cri-RI-LI-PMI-CQI', then it is not expected that the UE is configured with more than 8 CSI-RS resources in the CSI-RS resource set contained in the resource setting linked to the CSI-ReportConfig.

[0222] If the UE is configured with a CSI-ReportConfig with a higher layer parameter reportQuantity set to 'cri-RI-LI-PMI-CQI', the UE does not expect the CSI-ReportConfig to be configured with a higher layer parameter codebookType set to 'typeII-r16' or 'typeII-PortSelection-r16' or 'typeII-PortSelection-r17'.

[0223] If the UE is configured with a CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RSRP', 'cri-SINR', 'none', 'cri-RSRP-Index' or 'cri-SINR-Index', and the CSI-ReportConfig is linked to a resource setup configured with the higher layer parameter resourceType set to 'aperiodic', then the UE is not expected to be configured with more than 16 CSI-RS resources in the CSI-RS resource set contained within the resource setup.

[0224] The LI indicates which column of the precoder matrix of the reported PMI corresponds to the strongest layer of the codeword corresponding to the maximum reported wideband CQI. If two wideband CQIs are reported and have equal values, the LI corresponds to the strongest layer of the first codeword. If the UE is configured with CSI-ReportConfig with reportQuantity set to 'cri-RI-LI-PMI-CQI' and the corresponding NZP-CSI-RS-ResourceSet for channel measurement is configured with two resource groups and N resource pairs, the UE reports the CRI and rank combination {ν associated with the resource pair 1 , v 2}, the first LI indicates which column of the pre-decoder matrix of the first reported PMI corresponds to the first v of the codeword 1 The strongest layer among the layers and the second LI indicates which column of the precoder matrix of the second reported PMI corresponds to the last v of the codeword 2 The strongest layer among the layers.

[0225] …

[0226] 5.2.1.4.3L1-RSRP Report

[0227] For L1-RSRP calculation

[0228] - When applicable, when quasi-co-located with 'type C' and 'type D' on a resource-by-resource basis, the UE may be configured with CSI-RS resources, SS / PBCH block resources, or both CSI-RS and SS / PBCH block resources.

[0229] - A UE may be configured with a CSI-RS resource configuration of up to 16 CSI-RS resource sets, with each set having up to 64 resources. The total number of different CSI-RS resources across all resource sets does not exceed 128.

[0230] For L1-RSRP reporting, if the higher layer parameter nrofReportedRS in CSI-ReportConfig is configured to one, the reported L1-RSRP value is defined by a 7-bit value in the range [-140, -44] dBm with a step size of 1 dB, if the higher layer parameter nrofReportedRS is configured to be greater than one, or if the higher layer parameter groupBasedBeamReporting is configured to 'enabled', or if the higher layer parameter groupBasedBeamReporting-r17 is configured, the UE shall use differential L1-RSRP based reporting, where the maximum measured value of L1-RSRP is quantized to a 7-bit value in the range [-140, -44] dBm with a step size of 1 dB, and the differential L1-RSRP is quantized to a 4-bit value. The differential L1-RSRP value is calculated with reference to the maximum measured L1-RSRP value that is part of the same L1-RSRP reporting instance in 2 dB steps. The mapping between reported L1-RSRP values ​​and measured quantities is described in [11, TS 38.133].

[0231] When configuring the higher layer parameter groupBasedBeamReporting-r17 in CSI-ReportConfig, the UE shall indicate the CSI resource set associated with the maximum measured value of L1-RSRP, and for each group, the CRI or SSBRI of the indicated CSI resource set is present first.

[0232] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to “notConfigured”, the UE shall derive channel measurements for calculating the L1-RSRP value reported in uplink timeslot n only based on the SS / PBCH or NZP CSI-RS (defined in TS 38.211 [4]) associated with the CSI resource configuration that is no later than the CSI reference resource.

[0233] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to "Configured", the UE shall derive channel measurements for calculating the L1-RSRP reported in uplink timeslot n only based on the SS / PBCH or NZP CSI-RS (defined in [4, TS 38.211]) associated with the CSI resource configuration no later than the latest occasion of the CSI reference resource.

[0234] When the UE is configured with SSB-MTC-AdditionalPCI, the CSI-SSB-ResourceSet configured for L1-RSRP reporting includes a set of SSB indices and a set of PCI indices, where each SSB index is associated with a PCI index.

[0235] When the UE is configured with CSI-ReportConfig with the higher layer parameter reportQuantity set to 'cri-RSRP-Index' or 'ssb-Index-RSRP-Index', the index of the UE capability value set indicating the maximum supported number of SRS antenna ports is reported together with the pair of SSBRI / CRI and L1-RSRP.

[0236] 5.2.1.4.4 L1-SINR Report

[0237] For L1-SINR calculation, for channel measurement, the UE may be configured with NZP CSI-RS resources and / or SS / PBCH block resources, and for interference measurement, the UE may be configured with NZP CSI-RS or CSI-IM resources.

[0238] - For channel measurement, the UE may be configured with a CSI-RS resource setting with a maximum of 16 resource sets, for a total of up to 64 CSI-RS resources or up to 64 SS / PBCH block resources.

[0239] For L1-SINR reporting, if the higher layer parameter nrofReportedRS in CSI-ReportConfig is configured to one, the reported L1-SINR value is defined by a 7-bit value with a step size of 0.5dB in the range [-23, 40]dB, and if the higher layer parameter nrofReportedRS is configured to be greater than one, or if the higher layer parameter groupBasedBeamReporting is configured to 'enabled', the UE shall use differential L1-SINR based reporting, where the maximum measured value of L1-SINR is quantized to a 7-bit value with a step size of 0.5dB in the range [-23, 40]dB, and the differential L1-SINR is quantized to a 4-bit value. The differential L1-SINR is calculated with reference to the maximum measured L1-SINR value as part of the same L1-SINR reporting instance with a step size of 1dB. When NZP CSI-RS is configured for channel measurement and / or interference measurement, the reported L1-SINR value shall not be compensated by the power offset given by the higher layer parameters powerControOffsetSS or powerControlOffset.

[0240] When one or two resource settings are configured for L1-SINR measurement

[0241] - If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to 'notConfigured', the UE shall derive channel measurements for computing the L1-SINR reported in uplink timeslot n based only on the SSB or NZP CSI-RS (defined in TS 38.211 [4]) associated with the CSI resource configuration that is no later than the CSI reference resource.

[0242] - If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to 'Configured', the UE shall derive channel measurements for computing the L1-SINR reported in uplink timeslot n only based on the SSB or NZP CSI-RS (defined in [4, TS 38.211]) associated with the CSI resource configuration no later than the latest occasion of the CSI reference resource.

[0243] - If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to 'notConfigured', the UE shall derive the interference measurement for calculating the L1-SINR reported in uplink timeslot n only based on the CSI-IM or NZP CSI-RS for interference measurement (defined in [4, TS 38.211]) associated with the CSI resource configuration no later than the CSI reference resource or the NZP CSI-RS for channel and interference measurement.

[0244] - If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to 'Configured', the UE shall derive the interference measurement for calculating the L1-SINR reported in uplink timeslot n based on the CSI-IM or NZP CSI-RS for interference measurement (defined in [4, TS 38.211]) associated with the CSI resource setting or the NZP CSI-RS for channel and interference measurement no later than the latest occasion of the CSI reference resource.

[0245] When the UE is configured with CSI-ReportConfig with the higher layer parameter reportQuantity set to 'cri-SINR-Index' or 'ssb-Index-SINR-Index', an index of the UE capability value indicating the maximum supported number of SRS antenna ports is reported together with the pair of SSBRI / CRI and L1-RSRP.

[0246] 5.2.1.5 CSI Reporting and CSI-RS Triggering / Activation

[0247] 5.2.1.5.1 Aperiodic CSI reporting / aperiodic CSI-RS when the triggering PDCCH and CSI-RS have the same basic parameters

[0248] For CSI-RS resource sets associated with resource settings configured with a higher layer parameter resourceType set to 'aperiodic', 'periodic' or 'semi-static', the trigger state of the report settings (configured with a higher layer parameter reportConfigType set to 'aperiodic') and / or resource settings for channel and / or interference measurements on one or more component carriers is configured using the higher layer parameter CSI-AperiodicTriggerStateList. For aperiodic CSI report triggering, a single set of CSI triggering states is configured by higher layers, where the CSI triggering states can be associated with any candidate DL BWP. It is not expected that a UE receives more than one DCI with a non-zero CSIrequest field per cell per timeslot. It is not expected that a UE receives DCI with a non-zero CSI request field within a cell group in a timeslot overlapping with any timeslot in which a DCI with a non-zero CSI request field is received in the same cell group. It is not expected that the UE is configured with different TCI-StateIds for the same aperiodic CSI-RS resource ID configured in multiple aperiodic CSI-RS resource sets with the same trigger offset in the same aperiodic trigger state. It is not expected that the UE receives more than one aperiodic CSI report request for transmission in a given timeslot per cell. It is not expected that the UE receives an aperiodic CSI report request for transmission in a timeslot that overlaps with any timeslot with an aperiodic CSI report transmission in the same cell group. If the UE does not indicate its capability CSItriggerStateContainingNonactiveBWP, the UE is not expected to be triggered with a CSI report for a non-active DL BWP. Otherwise, when the UE is triggered with a CSI report for a non-active DL BWP at the latest opportunity of the CSI reference resource expected to receive the associated NZP CSI-RS, the UE is not expected to report CSI for the non-active DL BWP and the CSI report associated with the BWP is omitted. When a UE is triggered with an aperiodic NZP CSI-RS in an inactive DL BWP when an NZP CSI-RS is expected to be received, the UE is not expected to measure the aperiodic CSI-RS. In the carrier of the serving cell where the associated NZP CSI-RS is expected to be received, if the active DL BWP when the NZP CSI-RS is received is different from the active DL BWP when the triggering DCI is received, then

[0249] -The last symbol of the PDCCH span carrying the DCI for BWP switching shall be no later than the last symbol of the PDCCH span carrying the DCI for CSI triggering, regardless of whether the two symbols are in the same carrier of the serving cell or in the same SCS;

[0250] - After the last symbol of the PDCCH span covering the CSI-triggered DCI and before the first symbol of the triggered NZP CSI-RS or CSI-IM, the UE is not expected to have any other BWP switching in the carrier.

[0251] - When a PDCCH reception contains two PDCCH candidates from two corresponding search space sets, as described in section 10.1 of [6, TS 38.213], a span involving the PDCCH candidate ending at a later time is used.

[0252] Use the CSI request field in the DCI to initiate the trigger state.

[0253] - When all bits of the CSI request field in the DCI are set to zero, no CSI is requested.

[0254] -When the number of configured CSI trigger states in CSI-AperiodicTriggerStateList is greater than When N TS is the number of bits in the DCI CSI request field, and the UE receives a subselection indication as described in section 6.1.3.13 of [10, TS38.321], which is used to convert up to The trigger status is mapped to the code point of the CSI request field in the DCI. TS Configured by the higher layer parameter reportTriggerSize, where N TS ∈{0,1,2,3,4,5,6}. When the UE is to transmit a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the subselection indication, the corresponding actions in [10, TS 38.321] and the UE assumptions for mapping the selected CSI triggering state to the code point of the DCI CSI request field shall apply starting from the first slot, which is in slot n. After that, where μ is the SCS configuration of PUCCH and is k with a value of 0 in frequency range 1 mac The subcarrier spacing configuration is , and when K-Mac is not provided, k mac By K-Mac or k mac =0 provided.

[0255] -When the number of CSI trigger states in CSI-AperiodicTriggerStateList is less than or equal to When the CSI request field in the DCI directly indicates the trigger status.

[0256] -For each aperiodic CSI-RS resource in the CSI-RS resource set associated with each CSI triggering state, the quasi-co-location configuration of the quasi-co-location RS source and the quasi-co-location type is indicated to the UE through higher layer signaling of qcl-info, as described in Section 5.1.5, and the qcl-info contains a reference list of TCI-States for the aperiodic CSI-RS resources associated with the CSI triggering state. If the State referenced in the list is configured by reference to an RS configured with qcl-Type set to 'typeD', the RS can be a SS / PBCH block located in the same or different CC / DL BWP, or a periodic or semi-static CSI-RS resource configured to be located in the same or different CC / DL BWP.

[0257] - If the scheduling offset between the last symbol of the PDCCH carrying the triggering DCI and the first symbol of the aperiodic CSI-RS resource in the NZP-CSI-RS-ResourceSet that is not configured with the higher layer parameter trs-Info is within the threshold beamSwitchTiming reported by the UE and enableBeamSwitchTiming is not provided, as defined in [13, TS 38.306], or the scheduling offset is less than when the UE provides beamSwitchTiming-r16, enableBeamSwitchTiming is provided and NZP-CSI-RS-ResourceSet is configured with the higher layer parameter repetition set to 'off' or is not configured with the higher layer parameter repetition Or the scheduling offset is less than the threshold beamSwitchTiming-r16 reported by the UE when enableBeamSwitchTiming is provided and NZP-CSI-RS-ResourceSet is configured with the higher layer parameter repetition set to 'on'.

[0258] …

[0259] - If configured, the UE may assume that the CSI-RS resources in the aperiodic CSI-RS resource set not configured with trs-Info are quasi-co-located with the RS in the indicated TCI state.

[0260] -The non-zero codepoints of the CSI request field in the DCI are based on at most The order of the associated positions of the trigger states is mapped to the CSI trigger state, where code point '1' is mapped to the trigger state in the first position.

[0261] For a UE configured with a higher layer parameter CSI-AperiodicTriggerStateList, if the resource setting linked to CSI-ReportConfig has multiple aperiodic resource sets, only one of the aperiodic CSI-RS resource sets from the resource setting is associated with a trigger state, and the UE performs a higher layer configuration per resource setting per trigger state to select one CSI-IM / NZP CSI-RS resource set from the resource setting.

[0262] When aperiodic CSI-RS is used with aperiodic reporting, the CSI-RS offset is configured per resource set by the higher layer parameters aperiodicTriggeringOffset or aperiodicTriggeringOffset-r16 or aperiodicTriggeringOffset-r17. The CSI-RS triggering offset is for μ CSIRS ≤3 with values ​​{0, 1, 2, 3, 4, 5, 6, ..., 15, 16, 24} time slots or for μ CSIRS =5 and μ CSIRS =6 has {0, 4, 8, 12, ..., 60, 64, 96} time slots, where μ CSIRS is the subcarrier spacing configuration for CSI-RS. If the UE is not configured with minimumSchedulingOffsetK0 for any DL BWP and minimumSchedulingOffsetK2 for any UL BWP and if all associated triggering states do not have the higher layer parameter qcl-Type set to 'typeD' in the corresponding TCI state, the CSI-RS triggering offset is fixed to zero. The aperiodic triggering offset for CSI-IM follows the offset of the associated NZP CSI-RS for channel measurement. The aperiodic CSI-RS is set in time slot K if the UE is configured with ca-SlotOffset for at least one of the triggered cell and the triggering cell. s , and in other cases in time slot K s =n+X, and among them

[0263] - According to the higher layer parameters aperiodicTriggeringOffset or aperiodicTriggeringOffset-r16 or aperiodicTriggeringOffset-r17, n is the time slot containing the triggered DCI, X is the CSI-RS triggering offset,

[0264] - and μ offset，PDCCH It is determined by the ca-SlotOffset configured by higher layers for the cell receiving the PDCCH. and μ offset ; and μ offset，CSIRS They are respectively determined by the ca-SlotOffset configured by a higher layer of the cell used to transmit CSI-RS. and μ offset , as defined in section 4.5 of [4, TS38.211].

[0265] …

[0266] 5.2.1.5.2 Semi-static CSI / Semi-static CSI-RS

[0267] For semi-persistent reporting on PUSCH, a set of trigger states is configured at higher layers via CSI-SemiPersistentOnPUSCH-TriggerStateList, where the CSI request field in the DCI scrambled with SP-CSI-RNTI activates one of the trigger states. The UE is not expected to receive DCI scrambled with SP-CSI-RNTI activating a semi-persistent CSI report with the same CSI-ReportConfigId as in a semi-persistent CSI report activated by a previously received DCI scrambled with SP-CSI-RNTI.

[0268] For semi-static reporting on PUCCH, the PUCCH resource used to transmit the CSI report is configured via reportConfigType. Semi-static reporting on PUCCH is activated by an activation command as described in section 6.1.3.16 of [10, TS 38.321], which selects one of the semi-static reporting settings for use by the UE on PUCCH. When the UE is to transmit a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the activation command, the indicated semi-static reporting setting shall be changed from It is applied starting from the first time slot thereafter, where μ is the SCS configuration of PUCCH.

[0269] …

[0270] If the UE has an active semi-static CSI-RS / CSI-IM resource configuration or an active semi-static ZP CSI-RS resource set configuration and has not received a deactivation command, the activated semi-static CSI-RS / CSI-IM resource set or the activated semi-static ZP CSI-RS resource set configuration is considered active when the corresponding DL BWP is active, otherwise they are considered suspended.

[0271] If the UE is configured with carrier deactivation, the following configurations in the activated carrier will also be deactivated and need to be reactivated: semi-static CSI-RS / CSI-IM resources, semi-static CSI report on PUCCH, semi-static SRS, semi-static ZP CSI-RS resource set.

[0272] 5.2.2 Channel State Information

[0273] 5.2.2.1 Channel Quality Indicator (CQI)

[0274] The CQI index and its interpretation are given in Table 5.2.2.1-2 or Table 5.2.2.1-4 for reporting CQI based on QPSK, 16QAM and 64QAM. The CQI index and its interpretation are given in Table 5.2.2.1-3 for reporting CQI based on QPSK, 16QAM, 64QAM and 256QAM. The CQI index and its interpretation are given in Table 5.2.2.1-5 for reporting CQI based on QPSK, 16QAM, 64QAM, 256QAM and 1024QAM.

[0275] Unless otherwise specified in this section, based on an observation interval that is unrestricted in time and an observation interval that is unrestricted in frequency, the UE shall derive, for each CQI value reported in uplink timeslot n, the highest CQI index that satisfies the following conditions:

[0276] A single PDSCH transport block with a combination of modulation scheme, target code rate and transport block size corresponding to a CQI index and occupying a group of downlink physical resource blocks called CSI reference resources can be received without exceeding the following transport block error probability:

[0277] -0.1, if the higher layer parameter cqi-Table in CSI-ReportConfig configures 'table1' (corresponding to Table 5.2.2.1-2) or 'table2' (corresponding to Table 5.2.2.1-3), or if the higher layer parameter cqi-Table in CSI-ReportConfig configures 'table4-r17' (corresponding to Table 5.2.2.1-5), or

[0278] -0.00001, if the higher layer parameter cqi-Table in CSI-ReportConfig is configured with 'table3' (corresponding to Table 5.2.2.1-4).

[0279] If the higher layer parameter timeRestrictionForChannelMeasurements is set to “notConfigured”, the UE shall derive channel measurements for calculating the CSI value reported in uplink timeslot n only based on the NZP CSI-RS (defined in TS 38.211 [4]) associated with the CSI resource configuration that is no later than the CSI reference resource.

[0280] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to "Configured", the UE shall only derive channel measurements for calculating CSI reported in uplink timeslot n based on the NZP CSI-RS (defined in [4, TS38.211]) associated with the CSI resource configuration no later than the latest timing of the CSI reference resource.

[0281] If the higher layer parameter timeRestrictionForinterferenceMeasurements is set to "notConfigured", the UE shall derive interference measurements for calculating the CSI value reported in uplink timeslot n only based on the CSI-IM and / or NZP CSI-RS for interference measurement associated with the CSI resource configuration that is no later than the CSI reference resource.

[0282] If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to "Configured", the UE shall derive the interference measurement for calculating the CSI value reported in uplink time slot n based on the CSI-IM and / or NZP CSI-RS for interference measurement (defined in [4, TS 38.211]) associated with the CSI resource setting no later than the latest opportunity of the CSI reference resource.

[0283] If the higher layer parameter cqi-BitsPerSubband in CSI-ReportConfig is not configured, then for each subband index s, the 2-bit subband differential CQI is defined as:

[0284] - Subband offset level = subband CQI index - wideband CQI index.

[0285] The mapping from 2-bit sub-band differential CQI values ​​to offset levels is shown in Table 5.2.2.1-1.

[0286] …

[0287] If the higher layer parameter cqi-BitsPerSubband in CSI-ReportConfig is configured, a 4-bit subband CQI is reported for each subband index s. The 4-bit subband CQI for each subband s is the CQI index configured by the higher layer parameter cqi-Table in CSI-ReportConfig in Table 5.2.2.1-2, Table 5.2.2.1-3, or Table 5.2.2.1-4.

[0288] A combination of modulation scheme and transport block size corresponds to a CQI index if:

[0289] - for transmissions on the PDSCH in the CSI reference resources, the combination may be transmitted according to the transport block size as described in Section 5.1.3.2, and

[0290] - The modulation scheme is indicated by the CQI index, and

[0291] - the combination of transport block size and modulation scheme that, when applied to the reference resource, produces an effective channel code rate that is most likely close to the code rate indicated by the CQI index. If more than one combination of transport block size and modulation scheme produces an effective channel code rate that is equally close to the code rate indicated by the CQI index, only the combination with the smallest of such transport block sizes is relevant.

[0292] …

[0293] 5.2.2.3 Reference Signal (CSI-RS)

[0294] 5.2.2.3.1NZP CSI-RS

[0295] The UE may be configured with one or more NZP CSI-RS resource set configurations, as indicated by higher layer parameters CSI-ResourceConfig and NZP-CSI-RS-ResourceSet. Each NZP CSI-RS resource set consists of K ≥ 1 NZP CSI-RS resources.

[0296] For each CSI-RS resource configuration, the UE is configured via higher layer parameters NZP-CSI-RS-Resource, CSI-ResourceConfig and NZP-CSI-RS-ResourceSet with the following parameters for which non-zero transmit power for the CSI-RS resources shall be assumed:

[0297] -nzp-CSI-RS-ResourceId determines the CSI-RS resource configuration identifier.

[0298] -periodicityAndOffset defines the CSI-RS periodicity and slot offset for periodic / semi-static CSI-RS. All CSI-RS resources in a set are configured with the same periodicity, while the slot offset can be the same or different for different CSI-RS resources.

[0299] -resourceMapping defines the number of ports, CDM type and OFDM symbol and subcarrier occupancy of CSI-RS resources within a time slot, as given in Section 7.4.1.5 of [4, TS 38.211].

[0300] -nrofPorts in resourceMapping defines the number of CSI-RS ports, where the allowable values ​​are given in section 7.4.1.5 of [4, TS 38.211].

[0301] -density in resourceMapping defines the CSI-RS frequency density per CSI-RS port per PRB, and the CSI-RS PRB offset in case of density value 1 / 2, where the allowable values ​​are given in section 7.4.1.5 of [4, TS 38.211]. For density 1 / 2, the odd / even PRB allocation indicated by density is relative to the common resource block grid.

[0302] -cdm-Type in resourceMapping defines the CDM value and mode, where the allowable values ​​are given in section 7.4.1.5 of [4, TS 38.211].

[0303] -powerControlOffset: It is the assumed ratio of PDSCH EPRE to NZP CSI-RS EPRE when the UE derives CSI feedback and adopts values ​​with a step size of 1 dB in the range of [-8, 15] dB. For CQI calculation based on a pair of NZP CSI-RS resources, the powerControlOffset of each NZP CSI-RS resource in a pair of NZP CSI-RS resources used for channel measurement is the assumed ratio of EPRE when the UE derives CSI feedback and adopts values ​​with a step size of 1 dB in the range of [-8, 15] dB.

[0304] -powerControlOffsetSS: This is the assumed ratio of NZP CSI-RS EPRE to SS / PBCH block EPRE.

[0305] -scramblingID defines the scrambling ID of the CSI-RS with a length of 10 bits.

[0306] - The BWP-Id in CSI-ResourceConfig defines in which bandwidth part the configured CSI-RS is located.

[0307] - repetition in NZP-CSI-RS-ResourceSet is associated with a CSI-RS resource set and defines whether the UE can assume that the CSI-RS resources within the NZP CSI-RS resource set are transmitted with the same downlink spatial domain transmit filter, as described in section 5.1.6.1.2, and can only be configured if the higher layer parameter reportQuantity associated with all reporting settings linked to the CSI-RS resource set is set to 'cri-RSRP', 'cri-SINR', 'cri-RSRP-Index', 'cri-SINR-Index' or 'none'.

[0308] -qcl-InfoPeriodicCSI-RS contains a reference to a TCI-State indicating the QCL source RS and the QCL type. If the TCI-State is configured by reference to an RS configured with a qcl-Type set to 'typeD' correlation, the RS may be a SS / PBCH block located in the same or different CC / DL BWP, or a CSI-RS resource configured as a periodic CSI in the same or different CC / DL BWP. The referenced RS may alternatively be a SS / PBCH block associated with a PCI different from that of the serving cell.

[0309] - The trs-Info in the NZP-CSI-RS-ResourceSet is associated with a CSI-RS resource set and for the CSI-RS resource set the UE may assume that the antenna ports with the same port index of the configured NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet are the same as described in Section 5.1.6.1.1 and may be configured when no reporting setting is configured or when the higher layer parameter reportQuantity associated with all reporting settings linked to the CSI-RS resource set is set to 'none'.

[0310] All CSI-RS resources in a set are configured with the same density and the same nrofPorts, except for the NZP CSI-RS resources used for interference measurement.

[0311] All CSI-RS resources of the UE expected resource set are configured with the same starting RB and RB number and the same cdm-type.

[0312] For a CSI-RS resource set configured with two resource groups and N resource pairs for channel measurement, the time slot offset of the two resources in the resource pair is configured within X∈{1,2} time slots, and there is no DL / UL switching between the two resources, where X=1 means that the two resources are configured in the same time slot, and X=2 means that the two resources are configured in two adjacent time slots.

[0313] As defined in section 7.4.1.5 of [4, TS 38.211], the bandwidth and initial common resource block (CRB) index of the CSI-RS resources within the BWP are determined based on the higher layer parameters nrofRBs and startingRB in the CSI-FrequencyOccupation IE, respectively, configured by the higher layer parameter freqBand in the CSI-RS-ResourceMapping IE. Both nrofRBs and startingRB are configured as integer multiples of 4 RBs, and the reference point of startingRB is CRB 0 on the common resource block grid. If The UE shall assume that the initial CRB index of the CSI-RS resource is Otherwise N initialRB =startingRB. If The UE shall assume that the bandwidth of the CSI-RS resource is otherwise In all cases, the UE should expect

[0314] 5.2.2.5 CSI reference resource definition

[0315] The CSI reference resource of the serving cell is defined as follows:

[0316] - In the frequency domain, the CSI reference resources are defined by a group of downlink physical resource blocks corresponding to the frequency band to which the derived CSI is related.

[0317] - In the time domain, the CSI reference resources for CSI reporting in uplink time slot n' consist of a single downlink time slot Definition, where K offset is a parameter configured by a higher layer as specified in clause 4.2 of [6TS 38.213], and where is K with a value of 0 in frequency range 1 offset Subcarrier spacing configuration,

[0318] -in and μ DL and μ UL are the subcarrier spacing configurations for DL ​​and UL, respectively, and and μ offset Determined by the ca-SlotOffset of the higher layer configuration for the cell transmitting uplink and downlink, as defined in section 4.5 of [4, TS 38.211]

[0319] - For periodic and semi-static CSI reporting

[0320] - If a single CSI-RS / SSB resource is configured for channel measurement, then n CSI_ref is greater than or equal to the minimum value of , so that it corresponds to a valid downlink time slot, or

[0321] - If multiple CSI-RS / SSB resources are configured for channel measurement, then n CSI_ref is greater than or equal to The minimum value of so that it corresponds to a valid downlink time slot.

[0322] - where for aperiodic CSI reporting, if the UE is instructed by DCI to report CSI in the same timeslot as the CSI request, then n CSI_ref Make the reference resource in the same valid downlink time slot as the corresponding CSI request, otherwise n CSI_ref is greater than or equal to The minimum value of time slot nn CSI_ref corresponds to a valid downlink time slot, where Z' corresponds to the delay requirement as defined in Section 5.4.

[0323] -When periodic or semi-static CSI-RS / CSI-IM or SSB is used for channel / interference measurement, the UE is not expected to measure channel / interference on the CSI-RS / CSI-IM / SSB whose last OFDM symbol is not received until Z' symbols before the transmission time of the first OFDM symbol of the aperiodic CSI report.

[0324] A timeslot in a serving cell is considered a valid downlink timeslot if:

[0325] - it includes at least one downlink or variable symbol configured by a higher layer, and

[0326] - It is not within a configured measurement gap of the UE

[0327] If there is no valid downlink slot for CSI reference resources corresponding to the CSI reporting setup in the serving cell, CSI reporting is omitted for the serving cell in uplink slot n'.

[0328] After CSI reporting (re)configuration, serving cell activation, BWP change or activation of SP-CSI, the UE reports the CSI report only after receiving at least one CSI-RS transmission opportunity for channel measurement and CSI-RS and / or CSI-IM opportunities for interference measurement no later than the CSI reference resource, otherwise the report is discarded.

[0329] When DRX is configured, the UE reports the CSI report only when it receives at least one CSI-RS transmission opportunity for channel measurement and CSI-RS and / or CSI-IM opportunities for interference measurement no later than the CSI reference resource in the DRX active time, otherwise the report is discarded. When DRX is configured and the CSI-RS resource set for channel measurement corresponding to the CSI report is configured with two resource groups and N resource pairs, as described in Section 5.2.1.4.1, the UE reports the CSI report only when it receives at least one CSI-RS transmission opportunity for each CSI-RS resource in the resource pair no later than the CSI reference resource in the same DRX active time, otherwise the report is discarded. When the UE is configured to listen to DCI format 2_6 and if the UE is configured to report CSI by the higher layer parameter ps-TransmitOtherPeriodicCSI when drx-onDurationTimer is not started, where the higher layer parameter reportConfigType is set to 'periodic' and reportQuantity is set to a quantity in addition to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index' and 'ssb-Index-RSRP-Index', the UE shall report CSI according to the procedure described in section 5.2.1.4 during the duration indicated by drx-onDurationTimer in DRX-Config also outside active time upon receiving at least one CSI-RS transmission opportunity for channel measurement and CSI-RS and / or CSI-IM opportunities for interference measurement during the duration of the CSI reference resources indicated by drx-onDurationTimer in DRX-Config or DRX active time no later than DRX active time, otherwise discard the report.When the UE is configured to listen to DCI format 2_6 and if the UE is configured to report L1-RSRP by the higher layer parameter ps-TransmitPeriodicL1-RSRP with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index' or 'ssb-Index-RSRP-Index' when drx-onDurationTimer is not started, the UE shall fig according to the procedure described in Section 5.2.1.4 during the duration indicated by drx-onDurationTimer in DRX-Config or DRX active time and in case of reception of at least one CSI-RS transmission opportunity for channel measurement not later than during the duration of the CSI reference resource indicated by drx-onDurationTimer in DRX-Config or DRX active time outside the DRX active time, L1-RSRP is reported when reportQuantity is set to 'cri-RSRP' or 'cri-RSRP-Capability[Set]Index', otherwise the report is discarded.

[0330] From the perspective of the base station, network energy saving can be introduced and / or utilized to save power. The base station can determine whether to partially or completely shut down a component (e.g., an antenna port and / or other component) and / or whether to reduce the transmission power of the component to reduce power consumption, for example, when there is at least one of a decrease in traffic and / or load, less than a threshold amount, and / or zero traffic and / or load. For example, the base station can turn off and / or shut down: (i) one, some, and / or all TXRUs in a group (one or more) of TXRUs of the base station; (ii) one, some, and / or all radio frequency (RF) chains in a group (one or more) of RF chains of the base station; (iii) one, some, and / or all antenna ports in a group (one or more) of antenna ports of the base station; and / or (iv) one, some, and / or all channels and / or signals in a group (one or more) of channels and / or signals of the base station. The base station can reduce its transmission power (TX power) by X decibels (dB). When the base station sees more traffic and / or has more UEs to serve (and / or when the traffic and / or load of the base station is greater than a threshold amount), the base station may increase TX power (e.g., return to normal) and / or turn on all or some of the following: (i) the TXRU of the base station; (ii) the radio frequency (RF) chain of the base station; (iii) the antenna port of the base station; and / or (iv) the channel and / or signal of the base station.

[0331] RP-230566, RAN1#110 Chairman's Minutes and RAN1#110bis-e Chairman's Minutes provide some details on network energy conservation. One or more parts of RP-230566, RAN1#110 Chairman's Minutes and RAN1#110bis-e Chairman's Minutes are quoted below:

[0332] 4.1 Objectives of SI or core WI or test WI

[0333] The goals of the work items are as follows:

[0334] 1. If found feasible by RAN4 studies, specify SCell operation without SSB for inter-band CA in FR1 and co-located cells, where the UE measures SSB transmitted on the PCell or another SCell for SCell time / frequency synchronization (including downlink AGC), and L1 / L3 measurements, including potential enhancements to the SCell activation procedure if required [RAN4, RAN2]

[0335] 2. Specify enhancements to the cell DTX / DRX mechanism, including alignment of cell DTX / DRX and UE DRX in RRC_CONNECTED mode, and inter-node information exchange on cell DTX / DRX [RAN2, RAN1, RAN3]

[0336] ●Note: Due to cell DTX / DRX, there is no change in SSB transmission.

[0337] ●Note: The impact on IDLE / INACTIVE UE caused by the above enhancements should be avoided.

[0338] 3. Specify the following techniques in the space and power domains

[0339] ● Specify the required enhancements to CSI and beam management related procedures including measurement and reporting as well as transmission to enable efficient adaptation of spatial elements (e.g. antenna ports, active transceiver chains) [RAN1, RAN2]

[0340] ● Specify the required enhancements to CSI related procedures including measurement and reporting as well as transmission to enable efficient adaptation of the power offset value between PDSCH and CSI-RS [RAN1, RAN2]

[0341] ●Note: The above targets are only for UE-specific channels / signals

[0342] ● Note: When considering the total number of CSI reports and requests, the legacy UE CSI / CSI-RS capabilities apply

[0343] 4. Specify, where necessary, a mechanism to prevent legacy UEs from camping on cells using Rel-18 NES technology [RAN2]

[0344] 5. Enhancement of CHO procedure specified when source / target cell is in NES mode [RAN2]

[0345] 6. Enhancements to specify inter-node beam activation and restricted paging in limited areas [RAN3].

[0346] 7. Specify corresponding RRM / RF core requirements for the above features as necessary [RAN4]

[0347] protocol

[0348] To further discuss NES spatial domain adaptation in RAN1, consider the following scenario:

[0349] ● Type 1: Deactivate / enable all antenna elements associated with the logical antenna port

[0350] ● Type 2: Deactivate / activate a portion / subset of antenna elements associated with a logical antenna port

[0351] protocol

[0352] For spatial component adaptation, the following

[0353] ●A1-1) Each CSI-RS resource / resource set / resource configuration can be associated with only one spatial adaptation mode

[0354] -FFS: Detailed information on how the association was made

[0355] ●A1-2) Each CSI-RS resource / resource set / resource configuration may be associated with one or more spatial adaptation modes

[0356] -FFS: Detailed information on how the association was made

[0357] ●FFS: Detailed information on the definition of "spatial adaptation mode"

[0358] protocol

[0359] For spatial component adaptation, the following

[0360] ●A2-1) Independent / separate CSI reporting configurations, where each CSI reporting configuration corresponds to a spatial adaptation mode

[0361] ●A2-2) A CSI report configuration contains multiple CSI report sub-configurations, where each sub-configuration corresponds to a spatial adaptation mode

[0362] -FFS: Details of sub-configuration

[0363] protocol

[0364] For spatial domain adaptation, the required enhancement of multiple CSIs is further studied, where each CSI corresponds to a spatial adaptation mode, e.g.

[0365] ●FFS: The gNB indicates to the UE which CSI(s) the UE should report;

[0366] ●FFS: UE chooses which CSI to report

[0367] ●FFS: Report multiple CSIs in a joint CSI report

[0368] ●FFS: Reduced overhead of multiple CSIs

[0369] Note: UE complexity needs to be considered.

[0370] protocol

[0371] In order to adapt the power offset value between PDSCH and CSI-RS, the following are further studied:

[0372] ● Where / how to configure multiple power offset values

[0373] ○ Whether / how to dynamically indicate one or more power offset values ​​to the UE for CSI measurement / reporting and PDSCH reception

[0374] ○ Reduced overhead for CSI reporting associated with multiple power offset values ​​between PDSCH and CSI-RS

[0375] ○ Whether it can include other UE report content

[0376] protocol

[0377] For spatial and power domain adaptation, solutions based on adaptation within the active BWP are considered as the baseline

[0378] protocol

[0379] Discussing the transmission aspects of spatial / power domain adaptation for Rel-18 NES capable UEs, consider

[0380] ●Whether each adaptation requires transition time (for UE)

[0381] • Whether / how to inform the UE of the spatial adaptation pattern update and / or the PDSCH / CSI-RS transmit power change due to adaptation.

[0382] protocol

[0383] RAN1 continues to discuss at least the following physical layer related aspects of cell DTX / DRX

[0384] ○ Physical layer signals / channels and procedures expected to be affected during inactive periods of cell DTX / DRX

[0385] ■ When the physical layer / signal / channel is affected by cell DTX / DRX, consider the impact of SI on at least KPI

[0386] ● Further discussion on other aspects is not excluded

[0387] protocol

[0388] Consider at least the following candidate signals / channels for connected mode UEs from the perspective of RAN1 for further discussion, which the UE may not be expected to transmit or receive during the inactive period of cell DTX / DRX. The exact set of signals / channels that the UE may not be expected to transmit or receive is for further study.

[0389] ●DL

[0390] ○Periodic / semi-static CSI-RS (including TRS)

[0391] ○PRS

[0392] ○ PDCCH scrambled with UE-specific RNTI

[0393] ○PDCCH in Type 3 CSS

[0394] ○SPS-PDSCH

[0395] UL

[0396] ○SR

[0397] ○Periodic / semi-static CSI reporting

[0398] ○Periodic / semi-static SRS

[0399] ○CG-PUSCH

[0400] Other signals / channels are not excluded

[0401] In some instances, a channel state information (CSI) report may be derived based on measurements of (and / or about) multiple channel state information reference signals (CSI-RS) and / or multiple SI-RS resources (e.g., CSI-RS resources in a resource set). For example, a user equipment (UE) may perform measurements on multiple CSI-RSs to determine a set of measurement results associated with the multiple CSI-RSs, and / or may compare a set of measurement results (for the multiple CSI-RSs). In an instance, the UE may select and / or report a first CSI-RS with the strongest signal strength within the multiple CSI-RSs (e.g., the first CSI-RS may be associated with the strongest beam within the multiple beams associated with the multiple CSI-RSs). For example, the UE may identify the first CSI-RS with the strongest signal strength and / or associated with the strongest beam based on a comparison of one or more first measurement results (in a set of measurement results) associated with the first CSI-RS and other measurement results (in a set of measurement results) associated with other CSI-RSs in the multiple CSI-RSs. In an instance, one or more first measurement results may indicate a signal strength associated with a first CSI-RS. The UE may report an identity (ID) of a (selected) first CSI-RS and one or more first measurement results (e.g., a reference signal received power (RSRP), such as layer 1 RSRP (L1-RSRP)) to the base station. However, if there is an adaptation associated with the CSI-RS (e.g., due to the base station switching back to normal operation from network energy saving operation during multiple CSI-RS), the base station may not be able to properly compare the multiple CSI-RSs because some of the multiple CSI-RSs may have network energy saving and some of the CSI-RSs may not have network energy saving. The adaptation associated with the CSI-RS may include: (i) the base station turns off some or all CSI-RSs, (ii) the base station increases the transmission (TX) power for the CSI-RSs; and / or (iii) the base station increases the number of antenna ports used for the CSI-RSs.

[0402] In an example, the plurality of CSI-RSs may include 8 CSI-RSs associated with 8 CSI-RS resources (e.g., 8 CSI-RS opportunities). After 5 CSI-RS resources (e.g., 5 CSI-RS opportunities) out of the 8 CSI-RS resources (and before the remaining 3 CSI-RS resources out of the 8 CSI-RS resources), the base station may perform adaptation associated with the CSI-RS (e.g., the base station may adapt the CSI-RS), for example, by adapting at least one of the number of antenna ports, adapting the transmit power, turning off the CSI-RS, etc. The adaptation may be applied to the 3 remaining CSI-RS resources (e.g., 3 CSI-RS opportunities). In an example where the adaptation includes adapting the number of antenna ports from one to four, the base station may transmit the CSI-RS via the 5 CSI-RS resources using one antenna port, and the base station may transmit the CSI-RS via the 3 remaining CSI-RS resources using four antenna ports. In an example where the adaptation includes adapting the number of antenna ports from one to four, the base station may transmit CSI-RS via 5 CSI-RS resources using one antenna port (e.g., each of the 5 CSI-RS resources may be used to transmit CSI-RS using one antenna port), and the base station may transmit CSI-RS via 3 remaining CSI-RS resources using four antenna ports (e.g., each of the 3 remaining CSI-RS resources may be used to transmit CSI-RS using four antenna ports). In an example where the adaptation includes adapting the transmit power from 21 dB milliwatts (dBm) to 30 dBm, the base station may transmit CSI-RS via 5 CSI-RS resources using approximately 21 dBm (e.g., each of the 5 CSI-RS resources may be used to transmit CSI-RS using approximately 21 dBm), and the base station may transmit CSI-RS via 3 remaining CSI-RS resources using 30 dBm (e.g., each of the 3 remaining CSI-RS resources may be used to transmit CSI-RS using 30 dBm). In instances where the adaptation includes turning on the CSI-RS (e.g., activating a CSI-RS function), the base station may not transmit the CSI-RS via 5 CSI-RS resources, and the base station may transmit the CSI-RS via the 3 remaining CSI-RS resources. Techniques for managing CSI reporting associated with the adaptation (and / or addressing the impact of the adaptation on the CSI reporting and / or measurements associated with the CSI reporting) are provided herein.

[0403] In some examples, the adaptation of the base station is associated with adapting from a first adaptation condition (eg, a condition of the base station before the adaptation) to a second adaptation condition (eg, a condition of the base station after the adaptation).

[0404] In an example, the adaptation includes adapting the number of antenna ports associated with the base station. For example, adapting the number of antenna ports may include adapting the number of antenna ports from a first number of antenna ports to a second number of antenna ports. For example, a first adaptation condition may be associated with a first number of antenna ports, and a second adaptation condition may be associated with a second number of antenna ports. The number of antenna ports may be associated with a CSI-RS function of the base station. In some examples, before the adaptation, the base station may use a first number of antenna ports to transmit one or more CSI-RS to the UE using one or more CSI-RS resources. Alternatively and / or in addition, after the adaptation, the base station may use a second number of antenna ports to transmit one or more CSI-RS to the UE using one or more CSI-RS resources.

[0405] In an example, the adaptation includes adapting a transmit power associated with the base station. For example, adapting the transmit power may include adapting the transmit power from a first transmit power to a second transmit power. For example, the first adaptation condition may be associated with the first transmit power, and the second adaptation condition may be associated with the second transmit power. The transmit power may be associated with a CSI-RS function of the base station. In some examples, before the adaptation, the base station may use the first transmit power to transmit one or more CSI-RS to the UE using one or more CSI-RS resources. Alternatively and / or in addition, after the adaptation, the base station may use the second transmit power to transmit one or more CSI-RS to the UE using one or more CSI-RS resources.

[0406] In an example, the adaptation includes turning on the CSI-RS (e.g., activating a CSI-RS function). For example, before the adaptation, the base station may not use the one or more CSI-RS resources to transmit the one or more CSI-RS to the UE. Alternatively and / or in addition, after the adaptation, the base station may use the one or more CSI-RS resources to transmit the one or more CSI-RS to the UE.

[0407] The first concept of the present disclosure is to derive a CSI report based on a CSI-RS associated with two adaptation conditions (e.g., a first adaptation condition and a second adaptation condition). For example, the UE may compensate for the difference between the two adaptation conditions (e.g., a difference in the number of antenna ports, a difference in transmit power, a difference in CSI-RS functionality, etc.). For example, the UE may compensate for the difference to derive a CSI report.

[0408] In an example, when the adaptation is associated with adapting the number of antenna ports from a first number of antenna ports to a (different) second number of antenna ports, the UE may follow and / or use a lower number of antenna ports that is lower among the two adaptation conditions to derive the CSI report (e.g., the lower number of antenna ports may correspond to a minimum value in a set of values ​​including the first number of antenna ports and the second number of antenna ports). In an example where the adaptation is associated with adapting the number of antenna ports from two to four (e.g., for each CSI-RS resource and / or opportunity), the UE may use two antenna ports (e.g., of the four antenna ports) to: (i) derive a CSI report for the CSI-RS resource and / or opportunity after the adaptation; and (ii) derive a CSI report for the CSI-RS resource / opportunity before the adaptation. In some examples, the two antenna ports may be common between the two adaptation conditions (e.g., the two antenna ports may be used before the adaptation in the first adaptation condition and / or after the adaptation in the second adaptation condition). The two antenna ports may share the same pattern and / or resource elements between the two adaptation conditions. After adaptation, the UE may derive the CSI report using two antenna ports among the four antenna ports (eg, and not derive the CSI report based on the remaining two antenna ports among the four antenna ports except the two antenna ports).

[0409] In instances where the adaptation is associated with adapting the transmit power from a first transmit power to a (different) second transmit power, the UE may consider the power adaptation to compensate for the power difference between the first transmit power and the second transmit power when deriving measurement values ​​(e.g., quantities) associated with the CSI report (e.g., the UE may include the measurement values ​​in the CSI report and / or use the measurement values ​​to generate the CSI report). In an example, when the transmit power increases by 6 dB due to power adaptation (e.g., the second transmit power is approximately 6 dB greater than the first transmit power), the UE may add 6 dB to the measurement value (e.g., reference signal received power (RSRP)) associated with the CSI-RS resource (and / or opportunity) before the adaptation (e.g., wherein 6 dB is not added to the measurement value associated with the CSI-RS resource and / or opportunity after the adaptation). Alternatively and / or in addition, when the transmit power increases by 6 dB due to power adaptation, the UE may reduce (e.g., subtract) the measurement value (e.g., RSRP) associated with the CSI-RS resource (and / or opportunity) after the adaptation by 6 dB (e.g., wherein the measurement value associated with the CSI-RS resource and / or opportunity before the adaptation is not reduced by 6 dB).

[0410] A second concept of the present disclosure is to derive a CSI report based on a CSI-RS associated with one of the adaptation conditions (e.g., only the first adaptation condition before adaptation or the second adaptation condition after adaptation). In some instances, the CSI report may not be derived based on other adaptation conditions in the adaptation conditions (e.g., the CSI report may be derived based on the first adaptation condition instead of the second adaptation condition and / or may be derived based on the second adaptation condition instead of the first adaptation condition). The CSI report may be derived based on the latest adaptation condition in the adaptation conditions, for example, the latest adaptation condition may correspond to the second adaptation condition after adaptation). The CSI report may be derived based on a configured adaptation condition (e.g., the configured adaptation condition may be indicated by the base station or another base station).

[0411] In an example, the CSI report may be derived based on an adaptation condition (of the plurality of adaptation conditions) having a higher energy consumption (e.g., greater Tx power, greater number of antenna ports, on). For example, the UE may be configured (e.g., by the base station and / or another base station) to use a first adaptation condition to derive a CSI report (and / or may not use a second adaptation condition to derive a CSI report) based on determining at least one of the following: (i) the first transmit power is greater than the second transmit power; (ii) the first number of antenna ports is greater than the second number of antenna ports; (iii) the first adaptation condition is associated with CSI-RS on (e.g., CSI-RS function is activated) and / or the second adaptation condition is associated with CSI-RS off (e.g., CSI-RS function is deactivated). Alternatively and / or in addition, the UE may be configured (e.g., by the base station and / or another base station) to use a second adaptation condition to derive a CSI report (and / or may not use the first adaptation condition to derive a CSI report) based on determining at least one of the following: (i) the second transmission power is greater than the first transmission power; (ii) the second number of antenna ports is greater than the first number of antenna ports; (iii) the second adaptation condition is associated with CSI-RS being turned on (e.g., the CSI-RS function is activated) and / or the first adaptation condition is associated with CSI-RS being turned off (e.g., the CSI-RS function is deactivated).

[0412] In an example, the CSI report may be derived based on an adaptation condition (of the plurality of adaptation conditions) having lower energy consumption (e.g., lower Tx power, smaller number of antenna ports, disconnection). For example, the UE may be configured (e.g., by the base station and / or another base station) to use a first adaptation condition to derive a CSI report (and / or may not use a second adaptation condition to derive a CSI report) based on determining at least one of the following: (i) the first transmit power is less than the second transmit power; (ii) the first number of antenna ports is less than the second number of antenna ports; (iii) the first adaptation condition is associated with CSI-RS disconnection (e.g., CSI-RS function is deactivated) and / or the second adaptation condition is associated with CSI-RS connection (e.g., CSI-RS function is activated). Alternatively and / or in addition, the UE may be configured (e.g., by the base station and / or another base station) to use a second adaptation condition to derive a CSI report (and / or may not use the first adaptation condition to derive a CSI report) based on determining at least one of the following: (i) the second transmission power is less than the first transmission power; (ii) the second number of antenna ports is less than the first number of antenna ports; (iii) the second adaptation condition is associated with CSI-RS disconnection (e.g., the CSI-RS function is deactivated) and / or the first adaptation condition is associated with CSI-RS connection (e.g., the CSI-RS function is activated).

[0413] The third concept of the present disclosure is to avoid problems caused by network limitations. For example, the network can avoid (and / or can be prohibited from) adapting CSI-RS (and / or can be configured not to adapt CSI-RS) during a period when multiple CSI-RS resources will be used to derive a single CSI report (e.g., one CSI). Alternatively, if the current time is after the initial CSI-RS resource in multiple CSI-RS resources associated with a (single) CSI report, the base station can wait until the time after the CSI-RS of the last CSI-RS resource in the multiple CSI-RS resources (e.g., for the CSI report) is transmitted before performing (e.g., CSI-RS) adaptation.

[0414] A fourth concept of the present disclosure is to skip CSI reporting and / or report a predefined value (e.g., at least one of all 0s, all 1s, index 0, OOR, etc.). For example, the UE may not be able to derive and / or transmit a CSI report based on multiple CSI-RS resources (and / or CSI-RS transmitted via multiple CSI-RS resources) based on adaptation after the initial multiple CSI-RS resources and / or before the last CSI-RS resource among the multiple CSI-RS resources. Alternatively and / or in addition, the UE may transmit a CSI report including a predefined value (e.g., at least one of all 0s, all 1s, index 0, OOR, etc.) based on adaptation after the initial multiple CSI-RS resources and / or before the last CSI-RS resource among the multiple CSI-RS resources.

[0415] Example 1

[0416] In embodiment 1, adaptation of a signal (e.g., CSI-RS) transmitted by a base station may be indicated to a UE. For example, the UE (e.g., from a base station) may receive an indication indicating adaptation. The indication may indicate that the CSI-RS is adapted. In an example, the indication may indicate that the CSI-RS is adapted from a first number of antenna ports to a second number of antenna ports. The first number may be less than the second number. In an example, the indication may indicate that the CSI-RS is adapted from a first transmission power to a second transmission power. The first transmission power may be less than the second transmission power. The indication may indicate that the CSI-RS is adapted from off to on. Multiple CSI-RS resources may be associated with one CSI report (e.g., one CSI). Multiple CSI-RS resources are configured to derive one CSI report (e.g., one CSI). The UE may derive one CSI report (e.g., one CSI) based on one or more CSI-RS associated with multiple CSI-RS resources (e.g., transmitted within and / or via multiple CSI-RS resources). One or more first CSI-RS resources among the plurality of CSI-RS resources are before adaptation. One or more second CSI-RS resources among the plurality of CSI-RS resources are after adaptation.

[0417] In some instances, the UE may derive CSI based on CSI-RSs having the same number of antenna ports within multiple CSI-RS resources. The UE may derive CSI based on CSI-RSs having a third number of antenna ports within multiple CSI-RS resources. In some instances, the third number is not greater than the first number and / or the second number. In some instances, the third number is the minimum number between the first number and the second number. In some instances, if the CSI-RS includes more than the third number of antenna ports, the UE derives a CSI report (e.g., a CSI) based on a subset (and / or portion) of the CSI-RS. In some instances, the UE does not derive a CSI report (e.g., a CSI) based on CSI-RSs on additional antenna ports exceeding the third number. In some instances, the UE derives a CSI report (e.g., a CSI) based on CSI-RSs on one or more antenna ports shared before and after adaptation. In some instances, the UE derives a CSI report (e.g., a CSI) based on CSI-RS on one or more resource elements that are shared before and after adaptation. In some instances, the UE compensates a CSI report (e.g., a CSI) (and / or CSI derived for a CSI report) based on a measure of a transmit power difference associated with the adaptation. In some instances, the UE adjusts one or more measurement values ​​(e.g., one or more measured quantities) of a CSI report based on the adapted power difference. In some instances, the UE adds the power difference to the measurement value (e.g., the measured quantity measured before the adaptation) to determine an updated measurement value (e.g., which takes into account the adaptation), wherein the UE may use the updated measurement value to derive a CSI report. Alternatively and / or in addition, the UE may subtract the power difference from the measurement value (e.g., the measured quantity measured after the adaptation) to determine an updated measurement value (e.g., which takes into account the adaptation), wherein the UE may use the updated measurement value to derive a CSI report.

[0418] Example 2

[0419] In embodiment 2, adaptation of a signal (e.g., CSI-RS) transmitted by a base station may be indicated to a UE. For example, a UE (e.g., from a base station) may receive an indication indicating adaptation. The indication may indicate that the CSI-RS is adapted. In an example, the indication may indicate that the CSI-RS is adapted from a first number of antenna ports to a second number of antenna ports. The first number may be less than the second number. In an example, the indication may indicate that the CSI-RS is adapted from a first transmission power to a second transmission power. The first transmission power may be less than the second transmission power. The indication may indicate that the CSI-RS is adapted from off to on. Multiple CSI-RS resources may be associated with one CSI report (e.g., one CSI). Multiple CSI-RS resources are configured to derive one CSI report (e.g., one CSI). The UE may be configured to derive one CSI report (e.g., one CSI) based on one or more CSI-RS associated with multiple CSI-RS resources (e.g., transmitted within and / or via multiple CSI-RS resources). One or more first CSI-RS resources among the plurality of CSI-RS resources are before adaptation. One or more second CSI-RS resources among the plurality of CSI-RS resources are after adaptation.

[0420] In some instances, the UE may skip a CSI report. For example, the UE does not transmit a CSI report. The UE does not report a CSI. Alternatively and / or in addition, the UE may report a predefined value for a CSI.

[0421] Example 3

[0422] In embodiment 3, adaptation of a signal (e.g., CSI-RS) transmitted by a base station may be indicated to a UE. For example, a UE (e.g., from a base station) may receive an indication indicating adaptation. The indication may indicate that the CSI-RS is adapted. In an example, the indication may indicate that the CSI-RS is adapted from a first number of antenna ports to a second number of antenna ports. The first number may be less than the second number. In an example, the indication may indicate that the CSI-RS is adapted from a first transmission power to a second transmission power. The first transmission power may be less than the second transmission power. The indication may indicate that the CSI-RS is adapted from off to on. Multiple CSI-RS resources may be associated with one CSI report (e.g., one CSI). Multiple CSI-RS resources are configured to derive one CSI report (e.g., one CSI). The UE may derive one CSI report (e.g., one CSI) based on one or more CSI-RS associated with multiple CSI-RS resources (e.g., transmitted within and / or via multiple CSI-RS resources). One or more first CSI-RS resources among the plurality of CSI-RS resources are before adaptation. One or more second CSI-RS resources among the plurality of CSI-RS resources are after adaptation.

[0423] In some instances, the UE may derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more first CSI-RS resources among the plurality of CSI-RS resources before adaptation. In some instances, the UE does not derive a CSI based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more second CSI-RS resources among the plurality of CSI-RS resources after adaptation. In some instances, the UE does not derive a CSI based on one or more CSI-RS within the one or more second CSI-RS resources after adaptation based on (and / or due to) the CSI-RS being adapted (e.g., which may be determined by the UE based on an indication).

[0424] In some instances, the UE may derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more second CSI-RS resources among the plurality of CSI-RS resources after adaptation. In some instances, the UE does not derive a CSI based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more first CSI-RS resources among the plurality of CSI-RS resources before adaptation. In some instances, the UE does not derive a CSI based on one or more CSI-RS within the one or more first CSI-RS resources before adaptation based on (and / or due to) the CSI-RS being adapted (e.g., which may be determined by the UE based on an indication).

[0425] In some instances, based on a configuration from a base station (and / or another base station), the UE may determine whether to (i) derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more first CSI-RS resources before adaptation, or (ii) derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more second CSI-RS resources after adaptation. Alternatively and / or in addition, the UE may use power consumption (e.g., power consumption measured and / or reported by the UE) to determine whether to (i) derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more first CSI-RS resources before adaptation, or (ii) derive a CSI report (e.g., a CSI) based on one or more CSI-RS associated with (e.g., within and / or transmitted via) one or more second CSI-RS resources after adaptation.

[0426] In some examples, the embodiments disclosed herein, such as the embodiments described with respect to each of the first concept, the second concept, the third concept, the fourth concept, Example 1, Example 2, and Example 3, can be implemented independently and / or separately. Alternatively and / or additionally, a combination of the embodiments described herein can be implemented, such as the embodiments described with respect to one, some, and / or all of the first concept, the second concept, the third concept, the fourth concept, Example 1, Example 2, and / or Example 3. Alternatively and / or additionally, a combination of the embodiments described herein can be implemented in parallel and / or simultaneously, such as the embodiments described with respect to one, some, and / or all of the first concept, the second concept, the third concept, the fourth concept, Example 1, Example 2, and / or Example 3.

[0427] The various techniques, embodiments, methods and / or alternatives of the present disclosure may be performed independently and / or separately from each other. Alternatively and / or in addition, the various techniques, embodiments, methods and / or alternatives of the present disclosure may be combined and / or implemented using a single system. Alternatively and / or in addition, the various techniques, embodiments, methods and / or alternatives of the present disclosure may be implemented in parallel and / or simultaneously.

[0428] Unless otherwise specified, the present disclosure may describe behavior and / or operation when the number of antenna ports (e.g., associated with CSI-RS) is adapted from a first number of antenna ports to a second number of antenna ports. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from a first number of antenna ports to a second number of antenna ports. The techniques and / or systems provided herein may be implemented on a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from a first number of antenna ports to a second number of antenna ports.

[0429] Unless otherwise stated, the present disclosure may describe behavior and / or operation when a CSI-RS is adapted from a first transmission power to a second transmission power. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from a first transmission power to a second transmission power. The techniques and / or systems provided herein may be implemented on a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from a first transmission power to a second transmission power.

[0430] Unless otherwise stated, the present disclosure may describe behavior and / or operation when CSI-RS is adapted from on to off. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from on to off. The techniques and / or systems provided herein may be implemented on a base station and / or UE when a CSI-RS (associated with a base station and / or UE) is adapted from on to off.

[0431] Unless otherwise stated, the present disclosure may describe behavior and / or operation when adapting a CSI-RS from off to on. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when adapting a CSI-RS (associated with a base station and / or UE) from off to on. The techniques and / or systems provided herein may be implemented on a base station and / or UE when adapting a CSI-RS (associated with a base station and / or UE) from off to on.

[0432] Unless otherwise stated, the present disclosure may describe behavior and / or operation when at least one CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is received. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when at least one CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is received (e.g., by a UE). The techniques and / or systems provided herein may be implemented on a base station and / or UE when at least one CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is received (e.g., by a UE).

[0433] Unless otherwise stated, the present disclosure may describe behavior and / or operation when a CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is received. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a base station and / or UE when a CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is not received (e.g., by a UE). The techniques and / or systems provided herein may be implemented on a base station and / or UE when a CSI-RS with a defined number of ports (e.g., a first number of ports, a second number of ports, etc.) is not received (e.g., by a UE).

[0434] Unless otherwise indicated, the present disclosure may describe the behavior and / or operation of a single serving cell. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a single serving cell. The techniques and / or systems provided herein may be implemented on a single serving cell.

[0435] Unless otherwise indicated, the present disclosure may describe the behavior and / or operation of multiple serving cells. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of multiple serving cells. The techniques and / or systems provided herein may be implemented on multiple serving cells.

[0436] Unless otherwise indicated, the present disclosure may describe the behavior and / or operation of a single bandwidth portion. The techniques and / or systems provided herein may be applicable to the behavior and / or operation of a single bandwidth portion. The techniques and / or systems provided herein may be implemented on a single bandwidth portion.

[0437] Throughout this disclosure, unless otherwise indicated, a base station may configure multiple bandwidth parts for a UE (eg, the base station configures multiple bandwidth parts for a UE).

[0438] Throughout this disclosure, unless otherwise indicated, a base station may configure a single bandwidth portion for a UE (eg, the base station configures a single bandwidth portion for a UE).

[0439] One, some and / or all of the foregoing examples, concepts, techniques and / or embodiments may be formed and / or combined into new embodiments.

[0440] Figure 6 600 according to an exemplary embodiment from the perspective of a UE. In step 605, adaptation of a CSI-RS transmitted by a base station is indicated to the UE. For example, the UE may receive an indication of the adaptation. The indication may be transmitted by the base station. In step 610, a plurality of CSI-RS resources for deriving (e.g., determining, calculating and / or generating) a CSI report are configured for the UE, wherein a first subset of (one or more) CSI-RS resources in the plurality of CSI-RS resources is before adaptation, and a second subset of (one or more) CSI-RS resources in the plurality of CSI-RS resources is after adaptation. For example, each CSI-RS resource in the first subset of (one or more) CSI-RS resources may include: (i) one or more time resources before an adaptation time of the adaptation, and / or (ii) one or more frequency resources. Alternatively and / or in addition, each CSI-RS resource in the second subset of (one or more) CSI-RS resources may include: (i) one or more time resources after an adaptation time of the adaptation, and / or (ii) one or more frequency resources. In step 615, the UE derives (eg, determines, calculates and / or generates) a CSI report based on the plurality of CSI-RS resources (eg, based on all CSI-RS resources in the plurality of CSI-RS resources).

[0441] In one embodiment, the UE does not derive a CSI report based on a first portion of the plurality of antenna ports. The first portion may include a first subset of (one or more) antenna ports of the plurality of antenna ports. For example, the UE may use the first portion of the plurality of antenna ports to determine CSI to include in the CSI report. For example, the CSI to include in the CSI report may be determined based on the first portion of the plurality of antenna ports (and / or the CSI report may include CSI determined based only on the first portion of the plurality of antenna ports).

[0442] In one embodiment, the UE derives a CSI report based on one or more antenna ports (e.g., a first portion of multiple antenna ports) shared between a first group of antenna ports before adaptation and a second group of antenna ports after adaptation. The first group of antenna ports may include one, some, or all of the multiple antenna ports. The UE and / or base station may use the first group of antenna ports to transmit and / or receive one or more CSI-RSs before adaptation (e.g., one or more CSI-RS resources in a first subset of CSI-RS resources may be used to transmit and / or receive one or more CSI-RSs). The second group of antenna ports may include one, some, or all of the multiple antenna ports. The UE and / or base station may use the second group of antenna ports to transmit and / or receive one or more CSI-RSs after adaptation (e.g., one or more CSI-RS resources in a second subset of CSI-RS resources may be used to transmit and / or receive one or more CSI-RSs). The adaptation may be associated with switching between using the first group of antenna ports and using the second group of antenna ports. The first portion (of the plurality of antenna ports) based on which the UE derives the CSI report may include one, some or all antenna ports that are common to both the first set of antenna ports before adaptation and the second set of antenna ports after adaptation.

[0443] In one embodiment, the UE does not derive the CSI report based on a second portion of the plurality of antenna ports. The second portion may include a second subset of (one or more) antenna ports of the plurality of antenna ports. For example, the UE may exclude the second portion of the plurality of antenna ports from consideration to determine the CSI to include in the CSI report. For example, the CSI to include in the CSI report may not be determined based on the second portion of the plurality of antenna ports (and / or the CSI report may not include the CSI determined based on the second portion of the plurality of antenna ports).

[0444] In some examples, the second portion of the plurality of antenna ports includes one or more antenna ports of the plurality of antenna ports that are not common to both the first set of antenna ports (eg, used before adaptation) and the second set of antenna ports (eg, used after adaptation).

[0445] In some examples, the UE derives a CSI report based on multiple CSI-RS resources (e.g., in step 615). For example, for each CSI-RS resource in one, some, or all of the multiple CSI-RS resources, the UE may (i) monitor and / or receive a CSI-RS (e.g., from a base station) via the CSI-RS resource, and / or (ii) measure the CSI-RS to determine a measurement result associated with the CSI-RS resource (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), wherein the measurement result is determined based on a first portion of the multiple antenna ports and / or a second portion of the multiple antenna ports. For example, the measurement result may be determined based on a measurement value of one or more signals transmitted and / or received via the first portion of the multiple antenna ports (and / or may not be determined based on a measurement value of one or more signals transmitted and / or received via the second portion of the multiple antenna ports). Therefore, the UE may determine a set of measurement results (e.g., signal strength measurements) associated with multiple CSI-RS resources, and the set of measurement results may take into account a first portion of multiple antenna ports (and / or a second portion of multiple antenna ports). For example, the set of measurement results may include a first measurement result (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.) associated with a first CSI-RS resource (e.g., the UE may (i) monitor and / or receive a first CSI-RS via a first CSI-RS resource, and / or (ii) measure the first CSI-RS to determine a first measurement result associated with the first CSI-RS resource, wherein the first measurement result is based on one or more measurement values ​​associated with the first portion of multiple antenna ports); a first measurement result (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.) associated with a second CSI-RS resource. A second measurement result (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.) (e.g., the UE may (i) monitor and / or receive a second CSI-RS via a second CSI-RS resource, and / or (ii) measure the second CSI-RS to determine a second measurement result associated with the second CSI-RS resource, wherein the second measurement result is based on one or more measurement values ​​associated with a first portion of the multiple antennas); and / or one or more other measurement results associated with one or more other CSI-RS resources among the multiple CSI-RS resources.

[0446] In some examples, the UE may derive a CSI report based on the set of measurements. For example, the UE may (i) compare the set of measurement results associated with multiple CSI-RS resources to select a selected CSI-RS resource among the multiple CSI-RS resources (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the multiple CSI-RS resources); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) an indication that the selected CSI-RS resource is associated with the strongest signal strength among the multiple CSI-RS resources), (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (e.g., the selected CSI-RS resource measurement result may report at least one of a CQI, a PMI, a RI, a CRI, a LI, a L1-RSRP, a L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS associated with a CSI-RS received via the selected CSI-RS resource). ID).

[0447] In one embodiment, deriving the CSI report (eg, in step 615) is not based on measurements derived from signals transmitted and / or received using antenna ports of the second portion of the plurality of antenna ports.

[0448] In one embodiment, the UE derives the CSI report based on a third number of antenna ports, wherein the third number of antenna ports is (i) not greater than the first number of antenna ports before adaptation and / or (ii) not greater than the second number of antenna ports after adaptation. In some examples, the third number of antenna ports is a smaller number between the first number of antenna ports and the second number of antenna ports. For example, when the first number of antenna ports is four and the second number of antenna ports is eight, the third number of antenna ports may be four.

[0449] In one embodiment, the first number of ports is one, two, four, eight, or other value.

[0450] In one embodiment, the second number of ports is one, two, four, eight, or other value.

[0451] In one embodiment, the UE compensates for a power difference between a first transmit power before adaptation and a second transmit power after adaptation.

[0452] In one embodiment, the UE derives a CSI report based on the power difference.

[0453] In one embodiment, the UE subtracts the power difference from a measurement value (eg, a measured quantity associated with the CSI-RS) performed after adaptation to determine a measurement result (eg, in the set of measurement results), based on which the UE derives a CSI report.

[0454] In one embodiment, the UE adds the power difference to measurements performed prior to adaptation (eg, measured quantities associated with the CSI-RS) to determine measurement results (eg, among the set of measurement results) based on which the UE derives the CSI report.

[0455] In one embodiment, the adaptation is associated with adapting the number of antenna ports associated with the CSI-RS. For example, the adaptation may be associated with switching from a first number of ports to a second number of ports. For example, before the adaptation, the UE and / or the base station may use the first number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use the second number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources.

[0456] In one embodiment, the adaptation is associated with adapting a transmit power associated with the CSI-RS. For example, the adaptation may be associated with a switch from a first transmit power to a second transmit power. For example, before the adaptation, the base station may use the first transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (e.g., a first subset of CSI-RS resources before the adapted adaptation time). Alternatively and / or in addition, after the adaptation, the base station may use the second transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (e.g., a second subset of CSI-RS resources after the adapted adaptation time).

[0457] In one embodiment, the adaptation is associated with turning on the CSI-RS (e.g., activating a CSI-RS function). For example, before the adaptation, the base station may not use one or more CSI-RS resources to transmit one or more CSI-RS to the UE. Alternatively and / or in addition, after the adaptation, the base station may use one or more CSI-RS resources to transmit one or more CSI-RS to the UE.

[0458] Return to reference Figure 3 and 4In an exemplary embodiment of the UE, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the UE to: (i) be instructed to adapt the CSI-RS transmitted by the base station; (ii) be configured with multiple CSI-RS resources for deriving a CSI report, wherein a first subset of (one or more) CSI-RS resources in the multiple CSI-RS resources is before the adaptation, and a second subset of (one or more) CSI-RS resources in the multiple CSI-RS resources is after the adaptation, and (iii) derive a CSI report based on the multiple CSI-RS resources (e.g., based on all CSI-RS resources of the multiple CSI-RS resources). In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0459] Figure 7 700 according to an exemplary embodiment from the perspective of a UE. In step 705, the UE receives an indication of an adaptation associated with a CSI-RS, wherein the adaptation is associated with switching from a first number of ports to a second number of ports, and the UE is configured with a plurality of CSI-RS resources for deriving (e.g., determining, calculating and / or generating) a CSI report. In some instances, the UE receives the indication of the adaptation from a base station. In some instances, the UE receives a configuration of the plurality of CSI-RS resources (e.g., the UE receives the configuration from a base station), and / or uses the configuration to configure the plurality of CSI-RS resources. In step 710, the UE determines whether to transmit a CSI report (and / or whether to generate a CSI report) based on whether the UE receives a CSI-RS associated with the second number of ports.

[0460] In some instances, the adaptation is a CSI-RS adaptation performed by a base station and / or a UE. In some instances, before the adaptation, the UE and / or the base station may use a first number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, before the adaptation, a group of antenna ports equivalent to the number of the first ports may be used to transmit CSI-RS to the UE by the base station via a CSI-RS resource in a plurality of CSI-RS resources. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, after the adaptation, a group of antenna ports equivalent to the number of the second ports may be used to transmit CSI-RS to the UE by the base station via a CSI-RS resource in a plurality of CSI-RS resources.

[0461] In one embodiment, in response to receiving one or more first CSI-RS associated with the second number of ports, the UE may (i) generate a CSI report based on the one or more first CSI-RS; and / or (ii) transmit the CSI report (e.g., to the base station). For example, in response to receiving one or more first CSI-RS associated with the second number of ports, the UE may determine to transmit the CSI report (and / or may determine to generate the CSI report to transmit to the base station). For example, in response to receiving at least one CSI-RS associated with the second number of ports (e.g., at least one CSI-RS associated with the second number of ports may include a CSI-RS transmitted by the base station and / or received by the UE using the second number of ports, wherein the CSI-RS may be transmitted and / or received after adaptation associated with switching from the first number of ports to the second number of ports), the UE may generate a CSI report (e.g., for the CSI-RS associated with the second number of ports) and / or may transmit the CSI report (e.g., to the base station).

[0462] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among a plurality of CSI-RS resources; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS received by the UE via a first CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second number of ports), a second CSI-RS received by the UE via a second CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second number of ports), and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0463] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station can use the CSI report to determine which CSI-RS resource (and / or which channel) to use to communicate with the UE. For example, in response to transmitting a CSI report indicating the selected CSI-RS resource, the base station and the UE can communicate using a channel associated with the selected CSI-RS resource.

[0464] In one embodiment, in response to not receiving a CSI-RS associated with the second number of ports (e.g., in response to not receiving any CSI-RS associated with the second number of ports), the UE determines not to transmit a CSI report (and / or determines not to generate a CSI report for transmission to the base station). For example, in response to not receiving a CSI-RS associated with the second number of ports (e.g., any CSI-RS from the base station after adaptation), the UE may determine not to generate a CSI report (e.g., for the CSI-RS associated with the second number of ports) and / or may not transmit a CSI report (e.g., to the base station). For example, in response to not receiving a CSI-RS associated with the second number of ports (e.g., any CSI-RS from the base station after adaptation), the UE may skip generating and / or transmitting a CSI report (e.g., for the CSI-RS associated with the second number of ports). Alternatively and / or in addition, in response to not receiving a CSI-RS associated with the second number of ports (e.g., any CSI-RS from the base station after adaptation), the UE may delay generating and / or transmitting a CSI report (e.g., for the CSI-RS associated with the second number of ports) until after the UE has received one or more CSI-RS associated with the second number of ports (e.g., the UE may generate and / or transmit a CSI report based on measurement results of the one or more CSI-RS associated with the second number of ports).

[0465] In one embodiment, the first number of ports is greater than the second number of ports.

[0466] In one embodiment, the first number of ports is less than the second number of ports.

[0467] In one embodiment, the first number of ports is one, two, four, eight, or other value.

[0468] In one embodiment, the second number of ports is one, two, four, eight, or other value.

[0469] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0470] In one embodiment, the first number of ports is associated with the first sub-configuration.

[0471] In one embodiment, the second number of ports is associated with the second sub-configuration.

[0472] In some instances, the first subconfiguration and / or the second subconfiguration are included in a plurality of subconfigurations of a CSI reporting configuration. In some instances, the first subconfiguration corresponds to a first spatial adaptation mode and / or the second subconfiguration corresponds to a second spatial adaptation mode different from the first spatial adaptation mode. In some instances, the CSI reporting configuration is used by a UE and / or a base station to configure CSI-RS resources and / or transmit and / or receive a CSI-RS for deriving CSI to be reported to the base station.

[0473] Return to reference Figure 3 and 4 In an exemplary embodiment of the UE, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the UE to: (i) receive an indication of an adaptation associated with a CSI-RS, wherein the adaptation is associated with switching from a first number of ports to a second number of ports, and the UE is configured with a plurality of CSI-RS resources for deriving a CSI report; and (ii) determine whether to transmit a CSI report based on whether the UE receives a CSI-RS associated with the second number of ports. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0474] Figure 8 800 according to an exemplary embodiment from the perspective of a base station. In step 805, the base station transmits an indication of an adaptation associated with a CSI-RS to a UE, wherein the adaptation is associated with switching from a first number of ports to a second number of ports. In step 810, the base station configures a plurality of CSI-RS resources for deriving (e.g., determining, calculating and / or generating) a CSI report for the UE. In some instances, the base station transmits a configuration of a plurality of CSI-RS resources to the UE (e.g., the UE receives the configuration from the base station), and / or the UE uses the configuration to configure a plurality of CSI-RS resources. In step 815, the base station determines whether to receive a CSI report (and / or whether to listen to a CSI report) based on whether the UE receives a CSI-RS associated with the second number of ports (and / or based on whether the base station has transmitted a CSI-RS associated with the second number of ports to the UE).

[0475] In some instances, the adaptation is a CSI-RS adaptation performed by a base station and / or a UE. In some instances, before the adaptation, the UE and / or the base station may use a first number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, before the adaptation, a group of antenna ports equivalent to the number of the first ports may be used to transmit CSI-RS to the UE by the base station via a CSI-RS resource in a plurality of CSI-RS resources. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second number of ports to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, after the adaptation, a group of antenna ports equivalent to the number of the second ports may be used to transmit CSI-RS to the UE by the base station via a CSI-RS resource in a plurality of CSI-RS resources.

[0476] In one embodiment, based on determining that the UE receives one or more first CSI-RS associated with the second number of ports, the base station may monitor CSI reports and / or receive CSI reports (e.g., from the UE). Alternatively and / or in addition, the base station may monitor CSI reports and / or receive CSI reports based on determining that the base station transmits one or more first CSI-RS to the UE (e.g., using the second number of ports).

[0477] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among a plurality of CSI-RS resources; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS transmitted by the base station via a first CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second number of ports), a second CSI-RS transmitted by the base station via a second CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second number of ports), and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0478] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station may use the CSI report to determine which CSI-RS resource (and / or which beam and / or channel) to use to communicate with the UE. For example, in response to receiving a CSI report indicating the selected CSI-RS resource, the base station and the UE may communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0479] In one embodiment, the base station determines not to monitor and / or receive CSI reports based on determining that the UE does not receive the CSI-RS associated with the second number of ports (e.g., based on determining that the UE does not receive any CSI-RS associated with the second number of ports). For example, the base station may determine not to monitor and / or receive CSI reports based on determining that the base station does not transmit the CSI-RS associated with the second number of ports (e.g., based on determining that the base station does not transmit any CSI-RS associated with the second number of ports). For example, the base station may skip monitoring and / or receiving CSI reports (e.g., for CSI-RS associated with the second number of ports) based on determining that the UE does not receive the CSI-RS associated with the second number of ports (and / or based on determining that the base station does not transmit the CSI-RS associated with the second number of ports). Alternatively and / or in addition, based on determining that the UE did not receive the CSI-RS associated with the second port number (and / or based on determining that the base station did not transmit the CSI-RS associated with the second port number), the base station may delay receiving a CSI report (e.g., for the CSI-RS associated with the second port number) until the UE has received one or more CSI-RS associated with the second port number.

[0480] In one embodiment, the first number of ports is greater than the second number of ports.

[0481] In one embodiment, the first number of ports is less than the second number of ports.

[0482] In one embodiment, the first number of ports is one, two, four, eight, or other value.

[0483] In one embodiment, the second number of ports is one, two, four, eight, or other value.

[0484] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0485] In one embodiment, the first number of ports is associated with the first sub-configuration.

[0486] In one embodiment, the second number of ports is associated with the second sub-configuration.

[0487] In some instances, the first subconfiguration and / or the second subconfiguration are included in a plurality of subconfigurations of a CSI reporting configuration. In some instances, the first subconfiguration corresponds to a first spatial adaptation mode and / or the second subconfiguration corresponds to a second spatial adaptation mode different from the first spatial adaptation mode. In some instances, the CSI reporting configuration is used by a UE and / or a base station to configure CSI-RS resources and / or transmit and / or receive a CSI-RS for deriving CSI to be reported to the base station.

[0488] Return to reference Figure 3 and 4 In an exemplary embodiment of the base station, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the base station to: (i) transmit an indication of an adaptation associated with the CSI-RS to the UE, wherein the adaptation is associated with switching from a first number of ports to a second number of ports; (ii) configure a plurality of CSI-RS resources for deriving a CSI report for the UE; and (iii) determine whether to receive the CSI report based on whether the UE receives the CSI-RS associated with the second number of ports. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0489] In the present disclosure, the CSI-RS associated with the port number may correspond to the CSI-RS transmitted using antenna ports equivalent to the port number (for example, when the port number is eight, the CSI-RS associated with the port number may be transmitted using eight antenna ports).

[0490] Fig. 9 900 according to an exemplary embodiment from the perspective of a UE. In step 905, the UE receives an indication of an adaptation associated with a CSI-RS, wherein the adaptation is associated with switching from a first transmit power to a second transmit power, and the UE is configured with a plurality of CSI-RS resources for deriving (e.g., determining, calculating, and / or generating) a CSI report. In some instances, the UE receives the indication of the adaptation from a base station. In some instances, the UE receives a configuration of the plurality of CSI-RS resources (e.g., the UE receives the configuration from a base station), and / or configures the plurality of CSI-RS resources using the configuration. In step 910, the UE determines whether to transmit a CSI report (and / or whether to generate a CSI report) based on whether the UE receives a CSI-RS associated with the second transmit power.

[0491] In some instances, the adaptation is a CSI-RS adaptation performed by the base station and / or the UE. In some instances, before the adaptation, the base station may use a first transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (wherein the one or more CSI-RS transmitted using the first transmit power may be received by the UE). Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (wherein the one or more CSI-RS transmitted using the second transmit power may be received by the UE).

[0492] In one embodiment, in response to receiving one or more first CSI-RS associated with a second transmit power, the UE may (i) generate a CSI report based on the one or more first CSI-RS; and / or (ii) transmit the CSI report (e.g., to a base station). For example, in response to receiving one or more first CSI-RS associated with the second transmit power, the UE may determine to transmit the CSI report (and / or may determine to generate the CSI report to transmit to the base station). For example, in response to receiving at least one CSI-RS associated with the second transmit power (e.g., the at least one CSI-RS associated with the second transmit power may include a CSI-RS transmitted by the base station using the second transmit power, wherein the CSI-RS may be transmitted and / or received after adaptation associated with switching from the first transmit power to the second transmit power), the UE may generate a CSI report (e.g., for the CSI-RS associated with the second transmit power) and / or may transmit the CSI report (e.g., to the base station).

[0493] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among a plurality of CSI-RS resources; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS received by the UE via a first CSI-RS resource among a plurality of CSI-RS resources (e.g., transmitted by the base station using a second transmission power), a second CSI-RS received by the UE via a second CSI-RS resource among a plurality of CSI-RS resources (e.g., transmitted by the base station using a second transmission power), and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0494] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station can use the CSI report to determine which CSI-RS resource (and / or which channel) to use to communicate with the UE. For example, in response to transmitting a CSI report indicating the selected CSI-RS resource, the base station and the UE can communicate using a channel associated with the selected CSI-RS resource.

[0495] In one embodiment, in response to not receiving a CSI-RS associated with the second transmit power (e.g., in response to not receiving any CSI-RS associated with the second transmit power), the UE determines not to transmit a CSI report (and / or determines not to generate a CSI report to transmit to the base station). For example, in response to not receiving a CSI-RS associated with the second transmit power (e.g., any CSI-RS from the base station after adaptation), the UE may determine not to generate a CSI report (e.g., for the CSI-RS associated with the second transmit power) and / or may not transmit a CSI report (e.g., to the base station). For example, in response to not receiving a CSI-RS associated with the second transmit power (e.g., any CSI-RS from the base station after adaptation), the UE may skip generating and / or transmitting a CSI report (e.g., for the CSI-RS associated with the second transmit power). Alternatively and / or in addition, in response to not receiving a CSI-RS associated with the second transmit power (e.g., any CSI-RS from the base station after adaptation), the UE may delay generating and / or transmitting a CSI report (e.g., for the CSI-RS associated with the second transmit power) until after the UE has received one or more CSI-RS associated with the second transmit power (e.g., the UE may generate and / or transmit the CSI report based on measurement results of the one or more CSI-RS associated with the second transmit power).

[0496] In one embodiment, the first transmit power is greater than the second transmit power.

[0497] In one embodiment, the first transmit power is less than the second transmit power.

[0498] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0499] In one embodiment, the first transmit power is associated with the first sub-configuration.

[0500] In one embodiment, the second transmit power is associated with the second sub-configuration.

[0501] In some instances, the first subconfiguration and / or the second subconfiguration are included in a plurality of subconfigurations of a CSI reporting configuration. In some instances, the first subconfiguration corresponds to a first spatial adaptation mode and / or the second subconfiguration corresponds to a second spatial adaptation mode different from the first spatial adaptation mode. In some instances, the CSI reporting configuration is used by a UE and / or a base station to configure CSI-RS resources and / or transmit and / or receive a CSI-RS for deriving CSI to be reported to the base station.

[0502] Return to reference Figure 3 and 4 In an exemplary embodiment of the UE, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the UE to: (i) receive an indication of an adaptation associated with a CSI-RS, wherein the adaptation is associated with switching from a first transmit power to a second transmit power, and the UE is configured with a plurality of CSI-RS resources for deriving a CSI report; and (ii) determine whether to transmit a CSI report based on whether the UE receives a CSI-RS associated with the second transmit power. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0503] Fig.10 1000 is a flowchart according to an exemplary embodiment from the perspective of a base station. In step 1005, the base station transmits an indication of an adaptation associated with a CSI-RS to a UE, wherein the adaptation is associated with switching from a first transmit power to a second transmit power. In step 810, the base station configures a plurality of CSI-RS resources for deriving (e.g., determining, calculating, and / or generating) a CSI report for the UE. In some instances, the base station transmits a configuration of the plurality of CSI-RS resources to the UE (e.g., the UE receives the configuration from the base station), and / or the UE uses the configuration to configure the plurality of CSI-RS resources. In step 1015, the base station determines whether to receive a CSI report (and / or whether to listen to a CSI report) based on whether the UE receives a CSI-RS associated with the second transmit power (and / or based on whether the base station has transmitted a CSI-RS associated with the second transmit power to the UE).

[0504] In some instances, the adaptation is a CSI-RS adaptation performed by the base station and / or the UE. In some instances, before the adaptation, the base station may use a first transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (wherein the one or more CSI-RS transmitted using the first transmit power may be received by the UE). Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second transmit power to transmit one or more CSI-RS using one or more CSI-RS resources (wherein the one or more CSI-RS transmitted using the second transmit power may be received by the UE).

[0505] In one embodiment, based on determining that the UE receives one or more first CSI-RS associated with the second transmit power, the base station may monitor the CSI report and / or receive the CSI report (e.g., from the UE). Alternatively and / or in addition, the base station may monitor the CSI report and / or receive the CSI report based on determining that the base station transmits one or more first CSI-RS to the UE (e.g., using the second transmit power).

[0506] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among a plurality of CSI-RS resources; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS transmitted by the base station via a first CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second transmission power), a second CSI-RS transmitted by the base station via a second CSI-RS resource among a plurality of CSI-RS resources (e.g., using a second transmission power), and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0507] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station may use the CSI report to determine which CSI-RS resource (and / or which beam and / or channel) to use to communicate with the UE. For example, in response to receiving a CSI report indicating the selected CSI-RS resource, the base station and the UE may communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0508] In one embodiment, the base station determines not to monitor and / or receive CSI reports based on determining that the UE does not receive the CSI-RS associated with the second transmit power (e.g., based on determining that the UE does not receive any CSI-RS associated with the second transmit power). For example, the base station may determine not to monitor and / or receive CSI reports based on determining that the base station does not transmit the CSI-RS associated with the second transmit power (e.g., based on determining that the base station does not transmit any CSI-RS associated with the second transmit power). For example, the base station may skip monitoring and / or receiving CSI reports (e.g., for the CSI-RS associated with the second transmit power) based on determining that the UE does not receive the CSI-RS associated with the second transmit power (and / or based on determining that the base station does not transmit the CSI-RS associated with the second transmit power). Alternatively and / or in addition, based on determining that the UE did not receive the CSI-RS associated with the second transmit power (and / or based on determining that the base station did not transmit the CSI-RS associated with the second transmit power), the base station may delay receiving a CSI report (e.g., for the CSI-RS associated with the second transmit power) until after the UE has received one or more CSI-RS associated with the second transmit power.

[0509] In one embodiment, the first transmit power is greater than the second transmit power.

[0510] In one embodiment, the first transmit power is less than the second transmit power.

[0511] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0512] In one embodiment, the first transmit power is associated with the first sub-configuration.

[0513] In one embodiment, the second transmit power is associated with the second sub-configuration.

[0514] In some instances, the first subconfiguration and / or the second subconfiguration are included in a plurality of subconfigurations of a CSI reporting configuration. In some instances, the first subconfiguration corresponds to a first spatial adaptation mode and / or the second subconfiguration corresponds to a second spatial adaptation mode different from the first spatial adaptation mode. In some instances, the CSI reporting configuration is used by a UE and / or a base station to configure CSI-RS resources and / or transmit and / or receive a CSI-RS for deriving CSI to be reported to the base station.

[0515] Return to reference Figure 3 and 4 In an exemplary embodiment of a base station, the apparatus 300 includes a program code 312 stored in a memory 310. The CPU 308 may execute the program code 312 to enable the base station to: (i) transmit an indication of an adaptation associated with a CSI-RS to a UE, wherein the adaptation is associated with switching from a first transmit power to a second transmit power; (ii) configure a plurality of CSI-RS resources for deriving a CSI report for the UE; and (iii) determine whether to receive a CSI report based on whether the UE receives a CSI-RS associated with the second transmit power. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0516] In the present disclosure, a CSI-RS associated with a transmit power may correspond to a CSI-RS transmitted (e.g., by a base station) using an amount of power (e.g., electrical energy) equivalent to approximately the transmit power (and / or limited by approximately the transmit power).

[0517] Fig.11 1100 is a flowchart according to an exemplary embodiment from the perspective of a UE. In step 1105, the UE receives an indication of activation of a cell DTX by a base station, wherein the cell DTX is associated with one or more active periods and one or more inactive periods, and the UE is configured with multiple CSI-RS resources for deriving (e.g., determining, calculating and / or generating) a CSI report. In some instances, the UE receives an indication of activation from a base station. In some instances, the UE receives a configuration of the multiple CSI-RS resources (e.g., the UE receives the configuration from the base station), and / or uses the configuration to configure the multiple CSI-RS resources. In step 1110, the UE determines whether to transmit a CSI report (and / or whether to generate a CSI report) based on whether the UE receives a CSI-RS in an active period in one or more active periods.

[0518] In some instances, activation of cell DTX is performed by a base station and / or a UE. In some instances, before activating cell DTX, the UE and / or the base station may operate and / or communicate with each other using a first mode (e.g., a non-energy-saving mode). Alternatively and / or in addition, after activating cell DTX, the UE and / or the base station may operate and / or communicate with each other using cell DTX (e.g., an energy-saving mode). In some instances, the UE and / or the base station may communicate with each other more during one or more active periods of cell DTX than during one or more inactive periods.

[0519] In one embodiment, in response to receiving one or more first CSI-RS in an active period in one or more active periods, the UE may (i) generate a CSI report based on the one or more first CSI-RS; and / or (ii) transmit the CSI report (e.g., to a base station). For example, in response to receiving one or more first CSI-RS in an active period in one or more active periods, the UE may determine to transmit the CSI report (and / or may determine to generate a CSI report to transmit to the base station). For example, in response to receiving at least one CSI-RS in an active period in one or more active periods (e.g., the at least one CSI-RS may include a CSI-RS transmitted by a base station and / or received by a UE during an active period of cell DTX), the UE may generate a CSI report and / or may transmit the CSI report (e.g., to a base station).

[0520] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among multiple CSI-RS resources during an active period of cell DTX; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS received by the UE via a first CSI-RS resource among multiple CSI-RS resources, a second CSI-RS received by the UE via a second CSI-RS resource among multiple CSI-RS resources, and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0521] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station can use the CSI report to determine which CSI-RS resource (and / or which channel) to use to communicate with the UE. For example, in response to transmitting a CSI report indicating the selected CSI-RS resource, the base station and the UE can communicate using a channel associated with the selected CSI-RS resource.

[0522] In one embodiment, in response to not receiving a CSI-RS in an active period in one or more active periods of cell DTX (e.g., in response to not receiving any CSI-RS in the active period of cell DTX), the UE determines not to transmit a CSI report (and / or determines not to generate a CSI report for transmission to a base station). For example, in response to not receiving a CSI-RS (e.g., any CSI-RS from a base station) in an active period of cell DTX, the UE may determine not to generate a CSI report and / or may not transmit a CSI report (e.g., to a base station). For example, in response to not receiving a CSI-RS (e.g., any CSI-RS from a base station) in an active period of cell DTX, the UE may skip generation and / or transmission of a CSI report. Alternatively and / or in addition, in response to not receiving a CSI-RS (e.g., any CSI-RS from a base station) during an active period of cell DTX, the UE may delay generating and / or transmitting a CSI report until after the UE has received one or more CSI-RS during an active period of cell DTX (e.g., the UE may generate and / or transmit a CSI report based on measurement results of one or more CSI-RS received during the active period).

[0523] In one embodiment, the cell DTX is associated with transmitting the CSI-RS in one or more active periods. For example, the cell DTX (and / or the base station and / or the UE) may be configured such that the CSI-RS is transmitted in an active period (of one or more active periods) of the cell DTX.

[0524] In one embodiment, cell DTX is associated with not transmitting CSI-RS in one or more inactive periods. For example, cell DTX (and / or base station and / or UE) may be configured such that CSI-RS is not transmitted in an inactive period (of one or more inactive periods) of cell DTX.

[0525] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0526] In one embodiment, the CSI report includes CQI, PMI, RI, CRI, LI, L1-RSRP and / or L1-SINR.

[0527] Return to reference Figure 3 and 4 In an exemplary embodiment of the UE, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the UE to: (i) receive an indication of activation of a cell DTX, wherein the cell DTX is associated with one or more active periods and one or more inactive periods, and the UE is configured with a plurality of CSI-RS resources for deriving a CSI report; and (ii) determine whether to transmit a CSI report based on whether the UE receives a CSI-RS in an active period in one or more active periods associated with the cell DTX. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0528] Fig.12 1200 according to an exemplary embodiment from the perspective of a base station. In step 1205, the base station transmits an indication of activation of a cell DTX to the UE, wherein the cell DTX is associated with one or more active periods and one or more inactive periods. In step 1210, the base station configures a plurality of CSI-RS resources for deriving (e.g., determining, calculating and / or generating) a CSI report for the UE. In some instances, the base station transmits a configuration of the plurality of CSI-RS resources to the UE (e.g., the UE receives the configuration from the base station), and / or the UE uses the configuration to configure the plurality of CSI-RS resources. In step 1215, the base station determines whether to receive a CSI report (and / or whether to monitor a CSI report) based on whether the UE receives a CSI-RS in an active period in one or more active periods (and / or based on whether the base station has transmitted a CSI-RS to the UE in an active period in one or more active periods).

[0529] In some instances, activation of cell DTX is performed by a base station and / or a UE. In some instances, before activating cell DTX, the UE and / or the base station may operate and / or communicate with each other using a first mode (e.g., a non-energy-saving mode). Alternatively and / or in addition, after activating cell DTX, the UE and / or the base station may operate and / or communicate with each other using cell DTX (e.g., an energy-saving mode). In some instances, the UE and / or the base station may communicate with each other more during one or more active periods of cell DTX than during one or more inactive periods.

[0530] In one embodiment, based on determining that the UE receives one or more first CSI-RS in an active period in one or more active periods, the base station may monitor CSI reports and / or receive CSI reports (e.g., from the UE). Alternatively and / or in addition, the base station may monitor CSI reports and / or receive CSI reports based on determining that the base station transmits one or more first CSI-RS to the UE.

[0531] For example, the UE may (i) monitor and / or receive one or more first CSI-RSs (e.g., from a base station) via one or more CSI-RS resources among multiple CSI-RS resources during an active period of cell DTX; and / or (ii) measure the one or more first CSI-RSs to determine a set of measurement results associated with the one or more first CSI-RSs (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.). For example, the one or more first CSI-RSs may include a first CSI-RS transmitted by the base station via a first CSI-RS resource among multiple CSI-RS resources, a second CSI-RS transmitted by the base station via a second CSI-RS resource among multiple CSI-RS resources, and / or one or more other CSI-RSs. For example, the set of measurement results may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), a second measurement result associated with a second CSI-RS resource and / or a second CSI-RS (for example, at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0532] In some instances, the UE may derive a CSI report based on the set of measurement results associated with the one or more first CSI-RSs. For example, the UE may (i) compare the set of measurement results associated with the one or more first CSI-RSs to select a selected CSI-RS resource (e.g., the selected CSI-RS resource may be selected based on: based on the set of measurement results, determining that the selected CSI-RS resource is associated with the strongest signal strength among the one or more CSI-RS resources associated with the one or more first CSI-RSs); and / or (ii) generate a CSI report including CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the strongest signal strength among the one or more CSI-RS resources. (B) a selected CSI-RS resource measurement result associated with the selected CSI-RS resource (for example, the selected CSI-RS resource measurement result can report at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc. associated with the selected CSI-RS resource), and / or (C) a selected CSI-RS resource ID associated with the selected CSI-RS resource (and / or a selected CSI-RS ID associated with a CSI-RS received via the selected CSI-RS resource in one or more first CSI-RSs). In some instances, the base station may use the CSI report to determine which CSI-RS resource (and / or which beam and / or channel) to use to communicate with the UE. For example, in response to receiving a CSI report indicating the selected CSI-RS resource, the base station and the UE may communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0533] In one embodiment, the base station determines not to monitor and / or receive CSI reports based on determining that the UE does not receive CSI-RS in an active period in one or more active periods of cell DTX (e.g., based on determining that the UE does not receive any CSI-RS in the active period of cell DTX). For example, the base station may determine not to monitor and / or receive CSI reports based on determining that the base station does not transmit CSI-RS in an active period in one or more active periods of cell DTX (e.g., based on determining that the base station does not transmit any CSI-RS in the active period of cell DTX). For example, the base station may skip monitoring and / or receiving CSI reports based on determining that the UE does not receive CSI-RS in an active period in one or more active periods of cell DTX (and / or based on determining that the base station does not transmit CSI-RS in an active period in one or more active periods of cell DTX). Alternatively and / or in addition, based on determining that the UE did not receive the CSI-RS in an active period in one or more active periods of cell DTX (and / or based on determining that the base station did not transmit the CSI-RS in an active period in one or more active periods of cell DTX), the base station may delay receiving the CSI report until the UE has received one or more CSI-RS in the active period of cell DTX.

[0534] In one embodiment, the cell DTX is associated with transmitting the CSI-RS in one or more active periods. For example, the cell DTX (and / or the base station and / or the UE) may be configured such that the CSI-RS is transmitted in an active period (of one or more active periods) of the cell DTX.

[0535] In one embodiment, the cell DTX is associated with not transmitting the CSI-RS in one or more inactive periods. For example, the cell DTX (and / or the base station and / or the UE) may be configured such that the CSI-RS is not transmitted in the inactive period (of the one or more inactive periods) of the cell DTX. Alternatively and / or in addition, the cell DTX (and / or the base station and / or the UE) may be configured such that the base station is prohibited and / or not allowed to transmit the CSI-RS in the inactive period (of the one or more inactive periods) of the cell DTX.

[0536] In one embodiment, multiple CSI-RS resources are associated with channel measurement (e.g., can be used for channel measurement). For example, the UE can measure one or more CSI-RS received via one or more CSI-RS resources among the multiple CSI-RS resources to determine the signal strength associated with one or more channels, and / or can select a selected CSI-RS resource (e.g., a highest quality CSI-RS resource associated with a highest quality channel among the one or more channels), and / or can report the selected CSI-RS resource and / or one or more measurement values ​​to the base station.

[0537] In one embodiment, the CSI report includes CQI, PMI, RI, CRI, LI, L1-RSRP and / or L1-SINR.

[0538] Return to reference Figure 3 and 4 In an exemplary embodiment of the base station, the apparatus 300 includes a program code 312 stored in the memory 310. The CPU 308 may execute the program code 312 to enable the base station to: (i) transmit an indication of activation of cell DTX to the UE, wherein the adaptation is associated with switching from a first number of ports to a second number of ports; (ii) configure a plurality of CSI-RS resources for deriving a CSI report for the UE; and (iii) determine whether to receive the CSI report based on whether the UE receives the CSI-RS associated with the second number of ports. In addition, the CPU 308 may execute the program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0539] A communication device (e.g., UE, base station, network node, etc.) may be provided, wherein the communication device may include a control circuit, a processor installed in the control circuit, and / or a memory installed in the control circuit and coupled to the processor. The processor may be configured to execute a program code stored in the memory to perform Figures 6 to 12 In addition, the processor may execute program code to perform one, some and / or all of the above actions and steps and / or other actions and steps described herein.

[0540] A computer readable medium may be provided. The computer readable medium may be a non-transitory computer readable medium. The computer readable medium may include a flash memory device, a hard drive, a disk (e.g., a magnetic disk and / or an optical disk, such as at least one of a digital versatile disc (DVD), a compact disc (CD), etc.), and / or a memory semiconductor, such as at least one of a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), etc. The computer readable medium may include processor executable instructions that, when executed, cause execution of the processor executable instructions. Figures 6 to 12 One, some and / or all of the method steps described in, and / or one, some and / or all of the actions and steps mentioned above and / or other actions and steps described herein.

[0541] It will be appreciated that applying one or more of the techniques presented herein may produce one or more benefits, including but not limited to improving communication efficiency between devices, for example at least in part due to enabling the UE to appropriately measure and / or report CSI under network adaptation.

[0542] Various aspects of the present invention have been described above. It should be clear that the teachings herein can be implemented in a wide variety of forms, and any specific structure, function, or both disclosed herein are only representative. Based on the teachings herein, it should be understood by those skilled in the art that the aspects disclosed herein can be implemented independently of any other aspects, and two or more aspects of these aspects can be combined in different ways. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, by using other structures, functionality, or structures and functionality other than one or more aspects of the aspects set forth herein or different from one or more aspects of the aspects set forth herein, this device can be implemented or this method can be practiced. As an example of some of the above concepts, in some aspects, parallel channels can be established based on pulse repetition frequencies. In some aspects, parallel channels can be established based on pulse positions or offsets. In some aspects, parallel channels can be established based on time hopping sequences. In some aspects, parallel channels can be established based on pulse repetition frequencies, pulse positions or offsets, and time hopping sequences.

[0543] Those skilled in the art will understand that information and signals 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 above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0544] The skilled person will further appreciate that the various illustrative logical blocks, modules, processors, components, circuits, and algorithm steps described in conjunction with the various aspects disclosed herein may be implemented as electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two that may be designed using source decoding or some other technique), various forms of programs or design codes incorporating instructions (which may be referred to herein as "software" or "software modules" for convenience), or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The skilled person may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as causing a deviation from the scope of the present disclosure.

[0545] In addition, the various illustrative logical blocks, modules, and circuits described in conjunction with the aspects disclosed herein may be implemented within or performed by an integrated circuit ("IC"), an access terminal, or an access point. The IC may include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, electrical components, optical components, mechanical components, or any combination thereof designed to perform the functions described herein, and may execute code or instructions residing within the IC, outside the IC, or both. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0546] It should be understood that any specific order or hierarchy of steps in any disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in a process can be rearranged while remaining within the scope of the present disclosure. The accompanying method claims present the elements of the various steps in a sample order and are not intended to be limited to the specific order or hierarchy presented.

[0547] The steps of the method or algorithm described in conjunction with the various aspects disclosed herein can be implemented directly with hardware, with a software module executed by a processor, or with a combination of the two. Software modules (e.g., including executable instructions and related data) and other data can reside in a data memory, such as a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of a computer-readable storage medium known in the art. An example storage medium can be coupled to a machine such as a computer / processor (for convenience, the machine can be referred to as a "processor" in this article) so that the processor can read information (e.g., code) from the storage medium and write information to the storage medium. An example storage medium can be integrated with a processor. The processor and the storage medium can reside in an ASIC. The ASIC can reside in a user device. In an alternative, the processor and the storage medium can reside in a user device as discrete components. Alternatively and / or in addition, in some aspects, any suitable computer program product can include a computer-readable medium, and the computer-readable medium includes one or more codes related to the aspects of the present disclosure. In some aspects, a computer program product may include packaging materials.

[0548] Although the disclosed subject matter has been described in conjunction with various aspects, it will be understood that the disclosed subject matter is capable of further modification. This application is intended to cover any changes, uses, or adaptations of the disclosed subject matter that generally follow the principles of the disclosed subject matter and include deviations from the present disclosure that occur within the scope of known and customary practice in the art to which the disclosed subject matter relates.

Claims

1. A method for a user device, characterized in that: include: receiving an indication of activating discontinuous transmission of a cell by a base station, wherein: The cell discontinuous transmission is associated with one or more active periods and one or more inactive periods; and The user equipment is configured with a plurality of channel state information reference signal resources for deriving a channel state information report; and Whether to transmit the channel state information report is determined based on whether the user equipment receives a channel state information reference signal in an active period of the one or more active periods associated with discontinuous transmission of the cell.

2. The method according to claim 1, characterized in that include: In response to receiving one or more first channel state information reference signals in an active period of the one or more active periods, at least one of the following is performed: generating the channel state information report based on the one or more first channel state information reference signals; or The channel state information report is transmitted.

3. The method according to claim 1, characterized in that: In response to not receiving a channel state information reference signal in an active period of the one or more active periods, the user equipment determines not to transmit the channel state information report.

4. The method according to claim 1, characterized in that: The cell discontinuous transmission is associated with transmitting a channel state information reference signal in the one or more activity periods.

5. The method according to claim 1, characterized in that: The cell discontinuous transmission is associated with not transmitting a channel state information reference signal in the one or more inactive periods.

6. The method according to claim 1, characterized in that: The plurality of channel state information reference signal resources are associated with channel measurement.

7. The method according to claim 1, characterized in that: The channel state information report includes at least one of: a channel quality indicator, a precoding matrix indicator, a rank indicator, a channel state information reference signal resource indicator, a layer indicator, a layer 1 reference signal received power, or a layer 1 signal to interference and noise ratio.

8. The method according to claim 1, characterized in that: The user equipment receives the indication from the base station.

9. A method of a base station, characterized in that: include: transmitting an indication of activation of discontinuous transmission of a cell to a user equipment, wherein the discontinuous transmission of the cell is associated with one or more active periods and one or more inactive periods; configuring, for the user equipment, a plurality of channel state information reference signal resources for deriving a channel state information report; as well as Whether to receive the channel state information report is determined based on whether the user equipment receives a channel state information reference signal in an active period of the one or more active periods associated with the discontinuous transmission of the cell.

10. The method according to claim 9, characterized in that: Based on determining that the user equipment receives one or more first channel state information reference signals in an activity period of the one or more activity periods, at least one of the following is performed: monitoring the channel state information report; or The channel state information report is received.

11. The method according to claim 9, characterized in that: Based on determining that the user equipment does not receive a channel state information reference signal in an active period of the one or more active periods, the base station determines not to at least one of monitor the channel state information report or receive the channel state information report.

12. The method according to claim 9, characterized in that: The cell discontinuous transmission is associated with transmitting a channel state information reference signal in the one or more activity periods.

13. The method according to claim 9, characterized in that: The cell discontinuous transmission is associated with not transmitting a channel state information reference signal in the one or more inactive periods.

14. The method according to claim 9, characterized in that: The plurality of channel state information reference signal resources are associated with channel measurement.

15. The method according to claim 9, characterized in that: The channel state information report includes at least one of: a channel quality indicator, a precoding matrix indicator, a rank indicator, a channel state information reference signal resource indicator, a layer indicator, a layer 1 reference signal received power, or a layer 1 signal to interference and noise ratio.

16. A user equipment, characterized in that: include: Control circuit; a processor, the processor being installed in the control circuit; as well as a memory installed in the control circuit and operably coupled to the processor, wherein the processor is configured to execute program code stored in the memory to perform operations including: receiving an indication of activating discontinuous transmission of a cell by a base station, wherein: The cell discontinuous transmission is associated with one or more active periods and one or more inactive periods; and The user equipment is configured with a plurality of channel state information reference signal resources for deriving a channel state information report; and Whether to transmit the channel state information report is determined based on whether the user equipment receives a channel state information reference signal in an active period of the one or more active periods associated with discontinuous transmission of the cell.

17. The user equipment according to claim 16, characterized in that The operations include: In response to receiving one or more first channel state information reference signals in an active period of the one or more active periods, at least one of the following is performed: generating the channel state information report based on the one or more first channel state information reference signals; or The channel state information report is transmitted.

18. The user equipment according to claim 16, characterized in that: In response to not receiving a channel state information reference signal in an active period of the one or more active periods, the user equipment determines not to transmit the channel state information report.

19. The user equipment according to claim 16, characterized in that: The cell discontinuous transmission is associated with transmitting a channel state information reference signal in the one or more activity periods.

20. The user equipment according to claim 16, characterized in that: The cell discontinuous transmission is associated with not transmitting a channel state information reference signal in the one or more inactive periods.

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