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

Abstract

A method and apparatus are disclosed. In an example from the perspective of a user equipment, the user equipment receives an indication of an adaptation associated with a channel state information reference signal, where the adaptation is associated with switching from a first number of ports to a second number of ports, 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 associated with the second number of ports.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 529,500, 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 methods and apparatus for reporting channel state information (CSI) in wireless communication systems. 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. Such IP packet communications can provide IP-bearing voice, multimedia, multicast and on-demand communication services to users of mobile communication devices.

[0005] An exemplary network structure is the Evolved Universal Terrestrial Radio Access Network (E-UTRAN). The E-UTRAN system can provide high data throughput to implement the above-mentioned IP-borne voice and multimedia services. rd The 3GPP (3rd Generation Partnership Project) standards organization is discussing new next generation (e.g., 5G) radio technologies. Therefore, changes to the current body of 3GPP standards are currently being submitted and considered to enable the 3GPP standards to evolve and be completed. 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 an adaptation associated with a channel state information reference signal (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 channel state information (CSI) report. Based on whether the UE receives the CSI-RS associated with the second number of ports, the UE determines whether to transmit the CSI report.

[0007] In an example from the perspective of a base station, 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. The base station configures a plurality of CSI-RS resources for deriving a CSI report for the UE. Based on whether the UE receives the CSI-RS associated with the second number of ports, the base station determines whether to receive the CSI report. 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 drawing illustrating an exemplary scenario associated with uplink-downlink opportunity relationship 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 employ wireless communication systems that support broadcast services. Wireless communication systems are widely deployed to provide various types of communications, such as voice, data, and the like. These systems may be based on code division multiple access (CDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), 3GPP Long Term Evolution (LTE) radio access, 3GPP Long Term Evolution Advanced (LTE-A or LTE-Advanced), 3GPP2 Ultra Mobile Broadband (UMB), WiMax, 3GPP New Radio (NR) 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, such as those 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 report (chairman's note); RAN1#110bis-e report. The standards and documents listed above are expressly incorporated herein 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 antenna group includes 104 and 106, another antenna group includes 108 and 110, and another antenna group includes 112 and 114. Figure 11, only two antennas are shown for each antenna group, however, each antenna group may utilize more or fewer antennas. An access terminal 116 (AT) communicates with antennas 112 and 114, where antennas 112 and 114 transmit information to the access terminal 116 via a forward link 120 and receive information from the access terminal 116 via a reverse link 118. AT 122 communicates with antennas 106 and 108, where antennas 106 and 108 transmit information to AT 122 via a forward link 126 and receive information from AT 122 via a 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 antenna group and / or the area in which the antenna group is 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. Furthermore, an access network that transmits to access terminals randomly dispersed throughout its coverage area using beamforming may generally cause less interference to access terminals in neighboring cells than an access network that transmits to 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 An embodiment 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)) in a multiple-input and multiple-output (MIMO) system 200 is presented. At the transmitter system 210, traffic data for a number 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 corresponding transmit antenna. TX data processor 214 formats, decodes, 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 that is processed in a known manner and may be used at the receiver system to estimate the channel response. The multiplexed pilot data and decoded data for 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. The data rate, coding, and / or modulation for each data stream may be determined by instructions executed by the processor 230.

[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 streams are provided to N T Transmitters (TMTRs) 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 corresponding 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 the 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] Next, the RX data processor 260 receives the N R The receiver 254 receives and / or processes N based on a particular receiver processing technique. 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 data 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 about the communication link and / or the received data stream. The reverse link message may then be processed by the TX data processor 238 (which may also receive traffic data for a plurality of data streams from the data source 236), modulated by the modulator 280, conditioned by the transmitters 254a to 254r, and / or transmitted back to the transmitter system 210.

[0035] At the transmitter system 210, the modulated signals from the receiver system 250 are 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 (such as a keyboard or a keypad), and may output images and sounds through the output device 304 (such as a monitor 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) can 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 extremely low data rates for MTC. Low latency (e.g., short transmission time interval (TTI)) 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 / versions, which can improve efficiency and meet new application requirements (e.g., real-time services). An effective way to reduce latency is to shorten the length of 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 the 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, it may be beneficial to include larger subcarrier spacing.

[0041] More details on the NR frame structure, channel and / or basic parameter design are provided in 3GPP TS 38.211 V15.7.0. It is worth noting that 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 One or more parts of 3GPP TS 38.211 V15.7.0 are quoted as follows:

[0042] 4 Frame structure and physical resources

[0043] 4.1 Outline

[0044] Throughout this specification, unless otherwise specified, the size of each field in the time domain is expressed as a time unit T c =1 / (Df max ×N f ), where Δf max =480·10 3 Hz and N f =4096. Constant k = Ts / T c =64, where T s =1 / (Df 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 m ×15[kHz]]]> Cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal

[0049] 4.3 Frame Structure

[0050] 4.3.1 Frame and Subframe

[0051] Downlink and uplink transmissions are organized into f =(Df max N f / 100)×T c = 10ms duration frame, each frame consists of T sf =(Df 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] An uplink frame number i for transmission from a UE will start T before the corresponding downlink frame starts at the UE. TA =(N TA +N TA,offset )T c , 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), a layer 1 reference signal received power (Layer 1 Reference Signal Received Power, L1-RSRP), a L1-signal to interference and noise ratio (SINR), etc.), and / or report to the base station the contents indicating the quantities and / or contents. Then, the base station can schedule the UE appropriately and / or accordingly, for example, using one or more appropriate MCSs, one or more appropriate beams, probe precoding, and / or an appropriate number of layers. One or more parts of 3GPP TS38.214 V17.4.0 are quoted as follows:

[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] - 'typeA': {Doppler shift, Doppler spread, average delay, delay spread}

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

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

[0061] - 'typeD': {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 for providing quasi-co-located reference signals for the DM-RS of the PDSCH and the DM-RS of the PDCCH in the BWP / CC, for the CSI-RS, and, where applicable, 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] 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:

[0064] - 'typeC' with SS / PBCH blocks and, where applicable, 'typeD' 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

[0065] - 'typeC' with SS / PBCH blocks, and 'typeD' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter repetition when 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 the SS / PBCH blocks with a different PCI from the serving cell.

[0066] For periodic / semi-persistent CSI-RS, if the UE is configured with dl-OrJoint-TCIStateList, the UE may assume that the indicated TCI-State does not apply.

[0067] For aperiodic CSI-RS resources in an NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info, the UE shall expect the TCI-State indication to have a qcl-Type set to 'typeA' for the periodic CSI-RS resources in the NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info, and a qcl-Type set to 'typeD' for the same periodic CSI-RS resources when applicable.

[0068] 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:

[0069] - 'typeA' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and 'typeD' with the same CSI-RS resources when applicable, or

[0070] - 'typeA' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and 'typeD' 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 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

[0071] - 'typeA' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info and 'typeD' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition when applicable, or

[0072] - 'typeB' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info when 'typeD' is not applicable.

[0073] 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:

[0074] - 'typeA' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with higher layer parameter trs-Info, and 'typeD' with the same CSI-RS resources when applicable, or

[0075] - 'typeA' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter trs-Info and 'typeD' with CSI-RS resources in NZP-CSI-RS-ResourceSet configured with the higher layer parameter repetition when applicable, or

[0076] - 'typeC' with SS / PBCH blocks, and 'typeD' with the same SS / PBCH blocks when applicable, the reference RS may additionally be a SS / PBCH block with a different PCI than 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 different PCI than that of the serving cell are the same.

[0077] …

[0078] 5.1.6 UE procedures for receiving reference signals

[0079] 5.1.6.1 CSI-RS Reception Procedure

[0080] 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, Layer 1 signal to interference and noise ratio (L1-SINR) calculation, mobility and tracking during fast SCell activation.

[0081] For CSI-RS resources associated with a NZP-CSI-RS-ResourceSet with the higher layer parameter repetition set to 'on', the UE shall not be expected to be configured with CSI-RS 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 'typeD' 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 'typeD'. 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 'typeD' is applicable. Furthermore, a UE should not be expected to be configured with CSI-RS in PRBs that overlap with those of the CORESET in the OFDM symbols occupied by the search space set.

[0082] The UE is not expected to receive CSI-RS and SIB1 messages in overlapping PRBs in the OFDM symbol in which SIB1 is transmitted.

[0083] If the UE is configured with DRX,

[0084] - if the UE is configured to listen to DCI format 2_6 and is configured by the higher layer parameter ps-TransmitOtherPeriodicCSI to report CSI with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to a quantity other than 'cri-RSRP' and 'ssb-Index-RSRP' when drx-onDurationTimer in DRX-Config is not started, then the latest CSI measurement instant 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;

[0085] - if the UE is configured to listen to DCI format 2_6 and is configured by the higher layer parameter ps-TransmitPeriodicL1-RSRP to report L1-RSRP with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to cri-RSRP when drx-onDurationTimer in DRX-Config is not started, then the latest CSI measurement instant 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] - In other cases, the latest CSI measurement instant occurs in the DRX active time of the CSI to be reported.

[0087] 5.1.6.1.2 CSI-RS for L1-RSRP and L1-SINR calculation

[0088] 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.

[0089] If the UE is configured with a CSI-ReportConfig with reportQuantity set to 'cri-RSRP', 'cri-SINR' or 'None', and if the CSI-ResourceConfig (higher layer parameter resourcesForChannelMeasurement) used for channel measurement 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 'typeD' if 'typeD' is applicable. Furthermore, the UE shall not be expected to be configured with CSI-RS 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.

[0090] …

[0091] 5.2 UE Procedure for Reporting Channel State Information (CSI)

[0092] 5.2.1 Channel State Information Framework

[0093] The procedures for aperiodic CSI reporting described in this section assume that the CSI reporting is triggered by DCI format 0_1, but the procedures are also applicable to CSI reporting triggered by DCI format 0_2 by applying the higher layer parameter reportTriggerSizeDCI-0-2 instead of reportTriggerSize.

[0094] 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.

[0095] 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 indicating the resource set ID for the channel and optionally for interference. Each trigger state in the CSI-SemiPersistentOnPUSCH-TriggerStateList contains one associated CSI-ReportConfig.

[0096] 5.2.1.1 Report Settings

[0097] 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.

[0098] 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 reports, the configured periodicity and slot offset apply to the base 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 includes 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.

[0099] 5.2.1.2 Resource Settings

[0100] 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 reporting setting have the same DL BWP.

[0101] 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-persistent. For periodic and semi-persistent CSI resource settings, when the UE is configured with groupBasedBeamReporting-r17, the number of configured CSI resource sets is S=2, in other cases, the number of configured CSI-RS resource sets is limited to S=1. For periodic and semi-persistent CSI resource settings, the configured periodicity and 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.

[0102] The following are configured via higher layer signaling of one or more CSI resource settings for channel and interference measurements:

[0103] - CSI-IM resources for interference measurement as described in Section 5.2.2.4.

[0104] - NZP CSI-RS resources for interference measurement as described in Section 5.2.2.3.1.

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

[0106] 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 'typeD'. 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 'typeD'.

[0107] For L1-SINR measurement:

[0108] - 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 both channel and interference measurements.

[0109] - 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 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.

[0110] -The UE may apply SSB or a 'typeD' RS configured with qcl-Type set to 'typeD' to the NZP CSI-RS resources for channel measurement as a reference RS used to determine the 'typeD' hypothesis of the corresponding CSI-IM resources for interference measurement or the corresponding NZP CSI-RS resources for interference measurement for one CSI reporting configuration.

[0111] - The UE may expect the NZP CSI-RS resource set for channel measurement and the NZP-CSI-RS resource set for interference measurement (if present) to be configured with the higher layer parameter repetition.

[0112] 5.2.1.3 (void)

[0113] 5.2.1.4 Report Configuration

[0114] The UE shall calculate the CSI parameters (if reported) assuming the following dependencies between them:

[0115] - LI should be calculated conditional on reported CQI, PMI, RI and CRI

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

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

[0118] - The RI should be calculated conditioned on the reported CRI.

[0119] The reporting configuration for CSI can be aperiodic (using PUSCH), periodic (using PUCCH), or semi-persistent (using PUSCH and DCI activated PUSCH). CSI-RS resources can be periodic, semi-persistent, 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-persistent 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.

[0120] …

[0121] 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 is not 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.

[0122] For periodic or semi-persistent CSI reporting based 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

[0123]

[0124] where μ is the SCS configuration of the UL BWP on which the CSI report is transmitted.

[0125] For PUSCH-based semi-persistent CSI reporting, 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

[0126]

[0127] in and are the SFN and intra-frame slot number of the initial semi-persistent PUSCH transmission according to the activation DCI, respectively.

[0128] For semi-persistent or aperiodic CSI reporting based on PUSCH, the allowed slot offsets are configured by the following higher layer parameters:

[0129] - if triggered / activated by DCI format 0_2 and the higher layer parameter reportSlotOffsetListDCI-0-2 is configured, then the allowed slot offsets are configured by reportSlotOffsetListDCI-0-2, and

[0130] - 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

[0131] - In other cases, the allowed slot offsets are configured by the higher layer parameter reportSlotOffsetList.

[0132] The offset is selected in the activating / triggering DCI.

[0133] 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.

[0134] …

[0135] The reportFreqConfiguration included in the 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:

[0136] -csi-ReportingBand, which is a contiguous or non-contiguous subset of subbands in the bandwidth part for which CSI will be reported.

[0137] - 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 configuration have a frequency density of each CSI-RS port per PRB in the subband that is less than the configured density of the CSI-RS resources.

[0138] - 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.

[0139] - 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.

[0140] - 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 (i1 in Section 5.2.2.2) is reported for the entire CSI reporting band and one subband indication (i2 in Section 5.2.2.2) is reported for each subband in the CSI reporting band, except for 2 antenna ports. When subband PMI is configured with 2 antenna ports, PMI is reported for each subband in the CSI reporting band.

[0141] - 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.

[0142] CSI reporting settings are said to have broadband frequency-granularity in the following cases:

[0143] -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

[0144] -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

[0145] -reportQuantity is set to 'cri-RI-i1', or

[0146] -reportQuantity is set to 'cri-RI-CQI' or 'cri-RI-i1-CQI' and cqi-FormatIndicator is set to 'widebandCQI', or

[0147] -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'

[0148] In other cases, the CSI reporting settings are said to have a sub-band frequency-granularity.

[0149] The CSI report configuration with codebookType set to 'typeI-SinglePan' and the corresponding CSI-RS resource set for channel measurement as described in Section 5.2.1.4.1 has 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.

[0150] If the UE is configured with a CSI reporting setting for a bandwidth part with less than 24 PRBs, the CSI reporting setting is expected to have wideband frequency-granularity and the higher layer parameter codebookType is set to 'typeI-SinglePanel' where applicable.

[0151] The first subband size is given by Given, and the last subband size is In the case of Given, and In the case of Given.

[0152] If the UE is configured with semi-persistent CSI reporting, the UE shall report CSI when both CSI-IM and NZP CSI-RS resources are configured as periodic or semi-persistent. 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-persistent or aperiodic.

[0153] It is not expected that a UE configured with DCI format 0_1 ​​or 0_2 utilizes multiple CSI report triggers with the same CSI-ReportConfigId.

[0154] 5.2.1.4.1 Resource Setting Configuration

[0155] 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-persistent or aperiodic resource setting:

[0156] - When one resource setting is configured, the resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is used for channel measurement for L1-RSRP or channel and interference measurement for L1-SINR calculation.

[0157] - When two resource settings are configured, the first resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is used for channel measurement and the second (given by the higher layer parameter csi-IM-ResourcesForInterference or the higher layer parameter nzp-CSI-RS-ResourcesForInterference) is used for interference measurements performed on CSI-IM or NZP CSI-RS.

[0158] -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.

[0159] For aperiodic CSI, and for periodic and semi-persistent 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 a periodic or semi-persistent setting:

[0160] - When one resource setting is configured, the resource setting is given by resourcesForChannelMeasurement for L1-RSRP measurement. In this case, the number of configured CSI resource sets in the resource setting is S=2.

[0161] 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 for L1-RSRP measurement, which correspond to the first resource set and the second resource set, respectively.

[0162] For semi-persistent or periodic CSI, each CSI-ReportConfig is linked to a periodic or semi-persistent resource configuration:

[0163] - When one resource setting (given by the higher layer parameter resourcesForChannelMeasurement) is configured, the resource setting is for channel measurement for L1-RSRP or channel and interference measurement for L1-SINR calculation.

[0164] - 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.

[0165] 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 where the higher layer parameter codebookType is 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 where the higher layer parameter reportQuantity is 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.

[0166] For channel measurement with 2≤K s An NZP CSI-RS resource set of ≤8 resources can be configured with two resource groups and N∈{1,2} resource pairs, where there are K1≥1 resources in group 1 and K2≥1 resources in group 2, such that K1+K2=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.

[0167] 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 setting used 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 CSI-RS resource set.

[0168] For CSI measurements other than L1-SINR, the UE assumes:

[0169] - Each NZP CSI-RS port configured for interference measurement corresponds to an interference transmission layer.

[0170] - All interference 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;

[0171] - 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.

[0172] For L1-SINR measurement using dedicated interference measurement resources, the UE assumes:

[0173] - 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.

[0174] 5.2.1.4.2 Report volume configuration

[0175] The UE may be configured with a CSI-ReportConfig with a 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'.

[0176] 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.

[0177] 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 per subband according to section 5.2.2.2.

[0178] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-i1', then

[0179] - 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,

[0180] - The UE shall report a PMI consisting of a single wideband indication (i1 in Section 5.2.2.2.1) for the entire CSI reporting band.

[0181] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-i1-CQI', then

[0182] - 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,

[0183] - The UE shall report a PMI consisting of a single wideband indication (i1 in Section 5.2.2.2.1) for the entire CSI reporting band. p The CQI is calculated based on the i1 of the 31 pre-decoders (corresponding to the same i1 but different i2 in Section 5.2.2.2.1), 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.

[0184] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'cri-RI-CQI', then

[0185] - If the UE is configured with the higher layer parameter non-PMI-PortIndication contained in CSI-ReportConfig, the r ports are indicated in 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.

[0186] - 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 n=1,2,...,P, where P∈{1,2,4,8} is the number of ports in the CSI-RS resource.

[0187] - 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.

[0188] 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', then

[0189] - 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).

[0190] - 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.

[0191] -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 setting 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.

[0192] 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', then

[0193] - 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).

[0194] - 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.

[0195] If the UE is configured with a CSI-ReportConfig with the higher layer parameter reportQuantity 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 the CRI conditional 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 shall contain at most 16 CSI-RS ports. If 2 < K s ≤ 8 CSI-RS resources, each resource shall contain at most 8 CSI-RS ports.

[0196] If the UE is configured with a 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 there are K1≥1 resources in the first group, K2≥1 resources in the second group, and K1+K2 = K s , then - subject to UE capabilities, each resource may contain at most 32 CSI-RS ports. For the two resource groups with K i resources (i = 1, 2), if max{K1, K2} = 1, the resources in the NZP-CSI-RS-ResourceSet shall contain at most 32 CSI-RS ports; if max{K1, K2} = 2, each resource in the NZP-CSI-RS-ResourceSet shall contain at most 16 CSI-RS ports; if 2 < max{K1, K2} < 8, each resource in the NZP-CSI-RS-ResourceSet shall contain at most 8 CSI-RS ports.

[0197] - Each of the N resource pairs is associated with a CRI value.

[0198] - CSI-ReportConfig may be configured with a higher layer parameter sharedCMR. M1 and M2 are the number of resources associated with CRI values ​​other than the N CRIs defined above in group 1 and group 2, respectively, where M=M1+M2, such that the total number of CRI values ​​configured for CSI-ReportConfig is M+N.

[0199] - 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 M1=M2=0; or

[0200] - If the higher layer parameter csi-ReportMode is set to 'Mode1' and the higher layer parameter numberOfSingleTRP-CSI-Mode1 is set to X∈{1,2}, or if csi-ReportMode is set to 'Mode2', then

[0201] - If sharedCMR is configured: M1 = K1 and M2 = K2; or

[0202] - 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.

[0203] -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 M 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 'typeD'.

[0204] - 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.

[0205] - for the CSI-ReportConfig, the UE is expected to be configured with the higher layer parameter codebookType set to 'typeI-SinglePanel', and

[0206] - The UE shall derive CSI parameters other than CRI conditioned on the reported CRI as follows:

[0207] - 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:

[0208] - One CRIk1 (k1≥0) corresponds to the configured (k1+1)th entry of the associated N resource pairs in the corresponding CSI-RS resource set used for channel measurement, and the (M+k1+1)th entry of the corresponding CSI-IM resource set (if configured). The UE shall report two RIs, two PMIs, two LIs (if configured), and one CQI associated with the resources in the 1st group and the resources in the 2nd group of the (k1+1)th resource pair, respectively; and

[0209] - If X = 1, then one CRIk2 (k2 ≥ 0) corresponds to the configured (k2+1)th entry of the associated M resources in the corresponding CSI-RS resource set for channel measurement, and the (k2+1)th entry of the corresponding CSI-IM resource set (if configured). The UE shall report one RI, one PMI, one LI (if configured), and one or two CQIs conditioned on CRIk2; or

[0210] - If X = 2, one CRIk2 (k2 ≥ 0) corresponds to the configured (k2+1)th entry of the associated M1 resource in the 1st group of the corresponding CSI-RS resource set for channel measurement, and the (k2+1)th entry of the associated resource in the corresponding CSI-IM resource set (if configured), and one CRIk3 (k3 ≥ 0) corresponds to the configured (k3+1)th entry of the associated M2 resource in the 2nd group of the corresponding CSI-RS resource set for channel measurement, and the (M1+k3+1)th entry of the corresponding CSI-IM resource set (if configured). The UE shall report one RI, one PMI, one LI (if configured), and one or two CQIs conditioned on CRIk2, and one RI, one PMI, one LI (if configured), and one or two CQIs conditioned on CRIk3.

[0211] - If the higher layer parameter csi-ReportMode is set to 'Mode2', then a CRI k1 (k1 ≥ 0) is reported, which corresponds to the (k1+1)-th entry of M+N resources or resource pairs in the corresponding CSI-RS resource set used for channel measurement, and the (k1+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 Group 1 and Group 2. The last N code points of the CRI correspond to N configured resource pairs. If k1 < M, the UE shall report one RI, one PMI, one LI (if configured), and one or two CQIs conditioned on CRI k1; or in other cases, shall report two RIs, two PMIs, two LIs (if configured), and one CQI associated with the resources in Group 1 and the resources in Group 2 of the (k1-M+1)-th resource pair, respectively.

[0212] - For the reported CRI corresponding to the entries of the N resource pairs configured in the corresponding CSI-RS resource set used for channel measurement:

[0213] - The UE shall not report a total number of layers greater than four.

[0214] - 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}.

[0215] - The CodebookConfig in CSI-ReportConfig can be configured with two RI restriction parameters. One parameter applies to the reported RI 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 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.

[0216] - 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 Group 1. The second restriction applies to the reported PMI associated with the CSI-RS resources in Group 2.

[0217] If the UE is configured with 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.

[0218] If the UE is configured with CSI-ReportConfig where the higher layer parameter reportQuantity is set to 'ssb-Index-SINR' or 'ssb-Index-SINR-Index', the UE shall derive the L1-SINR conditioned on the reported SSBRI, where SSBRIk (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).

[0219] 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 configuration linked to the CSI-ReportConfig.

[0220] If the UE is configured with a CSI-ReportConfig with the higher layer parameter reportQuantity set to 'cri-RI-LI-PMI-CQI', the UE does not expect the CSI-ReportConfig to be configured with the higher layer parameter codebookType set to 'typeII-r16' or 'typeII-PortSelection-r16' or 'typeII-PortSelection-r17'.

[0221] If the UE is configured with a CSI-ReportConfig in which 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 setting configured with the higher layer parameter resourceType set to 'aperiodic', 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 setting.

[0222] The LI indicates which column of the pre-decoder 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 a 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 associated with the resource pair, and the rank combination {v1, v2}, the first LI indicates which column of the pre-decoder matrix of the first reported PMI corresponds to the strongest layer of the first v1 layers of the codeword and the second LI indicates which column of the pre-decoder matrix of the second reported PMI corresponds to the strongest layer of the last v2 layers of the codeword.

[0223] …

[0224] 5.2.1.4.3L1-RSRP Report

[0225] For L1-RSRP calculation

[0226] - When quasi-co-located with 'typeC' and 'typeD' per-resource when applicable, the UE may be configured with CSI-RS resources, SS / PBCH block resources, or both CSI-RS and SS / PBCH block resources.

[0227] - A UE may be configured with a CSI-RS resource setting of up to 16 CSI-RS resource sets, with each set having up to 64 resources. The total number of different CSI-RS resources in all resource sets does not exceed 128.

[0228] 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 as part of the same L1-RSRP reporting instance with a step size of 2 dB. The mapping between reported L1-RSRP values ​​and measured quantities is described in [11, TS 38.133].

[0229] When the higher layer parameter groupBasedBeamReporting-r17 in CSI-ReportConfig is configured, 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.

[0230] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to “notConfigured”, the UE shall derive the channel measurements used to calculate 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.

[0231] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to "Configured", the UE shall only derive channel measurements for calculating the L1-RSRP reported in uplink timeslot n 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 time instant of the CSI reference resource.

[0232] When the UE is configured with SSB-MTC-AdditionalPCI, the CSI-SSB-ResourceSet configured for L1-RSRP reporting contains an SSB index set and a PCI index set, where each SSB index is associated with a PCI index.

[0233] When the UE is configured with CSI-ReportConfig in which the higher layer parameter reportQuantity is set to 'cri-RSRP-Index' or 'ssb-Index-RSRP-Index', an 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.

[0234] 5.2.1.4.4 L1-SINR Report

[0235] 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.

[0236] - For channel measurement, the UE may be configured with a CSI-RS resource setting with up to 16 resource sets, a total of up to 64 CSI-RS resources or up to 64 SS / PBCH block resources.

[0237] 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 in the range [-23, 40] dB with a step size of 0.5 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 in the range [-23, 40] dB with a step size of 0.5 dB, and the differential L1-SINR is quantized to a 4-bit value. The differential L1-SINR value 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 1 dB. 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.

[0238] When one or two resource settings are configured for L1-SINR measurement

[0239] - 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.

[0240] - If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to "configured", the UE shall only derive channel measurements for calculating the L1-SINR reported in uplink timeslot n 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 time instant of the CSI reference resource.

[0241] - If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to 'notConfigured', the UE shall derive interference measurements 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]) or the NZP CSI-RS for channel and interference measurement associated with the CSI resource configuration 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 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]) or the NZP CSI-RS for channel and interference measurement associated with the CSI resource configuration no later than the latest time instant of the CSI reference resource.

[0243] When the UE is configured with CSI-ReportConfig in which the higher layer parameter reportQuantity is set to 'cri-SINR-Index' or 'ssb-Index-SINR-Index', an 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-SINR.

[0244] 5.2.1.5 CSI Reporting and CSI-RS Triggering / Activation

[0245] 5.2.1.5.1 Aperiodic CSI reporting / aperiodic CSI-RS when the triggering PDCCH and CSI-RS have the same basic parameters

[0246] For CSI-RS resource sets associated with resource settings configured with a higher layer parameter resourceType set to 'aperiodic', 'periodic' or 'semi-persistent', 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 state 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 per cell in a given timeslot. 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 by a CSI report for a non-active DL BWP. Otherwise, when the UE is triggered by a CSI report for a non-active DL BWP for which the associated NZP CSI-RS is expected to be received no later than the latest moment of the CSI reference resource, 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 by 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 expected to receive the associated NZP CSI-RS, 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

[0247] -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;

[0248] - 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.

[0249] - 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.

[0250] Use the CSI request field in the DCI to initiate the trigger state.

[0251] - When all bits of the CSI request field in the DCI are set to zero, no CSI is requested.

[0252] -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 assumption that the selected CSI triggering state is mapped to the codepoint of the DCI CSI request field shall be from the time slot n. It is applied starting from the first time slot after , 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 k, and if K-Mac is not provided mac By K-Mac or k mac =0 provided.

[0253] -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.

[0254] -For each non-periodic 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 non-periodic CSI-RS resources associated with the CSI triggering state. If the State referenced in the list is configured by a reference to an RS configured with qcl-Type set to 'typeD', the RS can be an SS / PBCH block located in the same or different CC / DL BWP, or a CSI-RS resource configured as periodic or semi-persistent and located in the same or different CC / DL BWP.

[0255] - Is the scheduling offset between the last symbol of the PDCCH carrying the triggered 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 within the threshold reported by the UE? is less than the reported value beamSwitchTiming when one of the above parameters and enableBeamSwitchTiming is not provided, as defined in [13, TS38.306], or whether 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 whether 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'.

[0256] …

[0257] - 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.

[0258] -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.

[0259] 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 higher layer configuration according to the resource setting according to the trigger state to select one CSI-IM / NZP CSI-RS resource set from the resource setting.

[0260] 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. CSIRS ≤3 with {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. Aperiodic CSI-RS is triggered in time slot K if the UE is configured with ca-SlotOffset for at least one of the triggered and triggering cells. s Transmitted in and in other cases in time slot K s =n+X, and among them

[0261] - 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,

[0262] - respectively, and It is determined by the ca-SlotOffset configured by higher layers for the cell receiving the PDCCH. and μ offset ; and μ offset，CSIRS is determined by the ca SlotOffset configured by higher layers for the cell transmitting CSI-RS and μ offset , as defined in section 4.5 of [4, TS 38.211].

[0263] …

[0264] 5.2.1.5.2 Semi-persistent CSI / Semi-persistent CSI-RS

[0265] 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.

[0266] For semi-persistent reporting on PUCCH, the PUCCH resources used to transmit CSI reports are configured by reportConfigType. As described in section 6.1.3.16 of [10, TS 38.321], semi-persistent reporting on PUCCH is activated by an activation command that selects one of the semi-persistent 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-persistent reporting setting shall be selected from the PUCCH in slot n. It is applied starting from the first time slot thereafter, where μ is the SCS configuration of PUCCH.

[0267] …

[0268] If the UE has an active semi-persistent CSI-RS / CSI-IM resource configuration or an active semi-persistent ZP CSI-RS resource set configuration and has not received a deactivation command, the activated semi-persistent CSI-RS / CSI-IM resource set or the activated semi-persistent ZP CSI-RS resource set configuration is considered active when the corresponding DL BWP is active, otherwise they are considered suspended.

[0269] 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-persistent CSI-RS / CSI-IM resources, semi-persistent CSI report on PUCCH, semi-persistent SRS, semi-persistent ZP CSI-RS resource set.

[0270] 5.2.2 Channel State Information

[0271] 5.2.2.1 Channel Quality Indicator (CQI)

[0272] 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.

[0273] 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:

[0274] 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:

[0275] -0.1, if the higher layer parameter cqi-Table in CSI-ReportConfig is configured with '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 is configured with 'table4-r17' (corresponding to Table 5.2.2.1-5), or

[0276] -0.00001, if the higher layer parameter cqi-Table in CSI-ReportConfig is configured with 'table3' (corresponding to Table 5.2.2.1-4).

[0277] If the higher layer parameter timeRestrictionForChannelMeasurements is set to "notConfigured", the UE shall only derive channel measurements for calculating the CSI value reported in uplink timeslot n 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.

[0278] If the higher layer parameter timeRestrictionForChannelMeasurements in CSI-ReportConfig is set to "Configured", the UE shall only derive channel measurements for calculating the 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 time instant of the CSI reference resource.

[0279] 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.

[0280] If the higher layer parameter timeRestrictionForInterferenceMeasurements in CSI-ReportConfig is set to "Configured", the UE shall only derive the interference measurement for calculating the CSI value reported in uplink timeslot n based on the CSI-IM and / or NZP CSI-RS for interference measurement associated with the CSI resource configuration (defined in [4, TS 38.211]) no later than the latest time instant of the CSI reference resource.

[0281] 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:

[0282] - Subband offset level = subband CQI index - wideband CQI index.

[0283] The mapping from 2-bit sub-band differential CQI values ​​to offset levels is shown in Table 5.2.2.1-1.

[0284] …

[0285] 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.

[0286] A combination of modulation scheme and transport block size corresponds to a CQI index if:

[0287] - the combination may be determined based on the transport block size as described in Section 5.1.3.2 for transmission on the PDSCH in the CSI reference resources, and

[0288] - The modulation scheme is indicated by the CQI index, and

[0289] - 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.

[0290] …

[0291] 5.2.2.3 Reference Signal (CSI-RS)

[0292] 5.2.2.3.1NZP CSI-RS

[0293] 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.

[0294] 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:

[0295] -nzp-CSI-RS-ResourceId determines the CSI-RS resource configuration unit.

[0296] -periodicityAndOffset defines the CSI-RS periodicity and slot offset for periodic / semi-persistent 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.

[0297] -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].

[0298] -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].

[0299] -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 on a common resource block grid.

[0300] -cdm-Type in resourceMapping defines the CDM value and mode, where the allowable values ​​are given in section 7.4.1.5 of [4, TS38.211].

[0301] -powerControlOffset: It is the assumed ratio of PDSCH EPRE to NZP CSI-RS EPRE when the UE derives CSI feedback and adopts values ​​in the range of [-8, 15] dB with a step size of 1 dB. For CQI 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 ​​in the range of [-8, 15] dB with a step size of 1 dB.

[0302] -powerControlOffsetSS: This is the assumed ratio of NZP CSI-RS EPRE to SS / PBCH block EPRE.

[0303] -scramblingID defines the scrambling ID of the CSI-RS with a length of 10 bits.

[0304] - The BWP-Id in CSI-ResourceConfig defines in which bandwidth part the configured CSI-RS is located.

[0305] - 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 when 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'.

[0306] -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 an SS / PBCH block located in the same or different CC / DL BWP, or a CSI-RS resource configured as periodic in the same or different CC / DL BWP. The referenced RS may additionally be an SS / PBCH block associated with a PCI different from that of the serving cell.

[0307] -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 as 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'.

[0308] Except for the NZP CSI-RS resources used for interference measurement, all CSI-RS resources in a set are configured with the same density and the same nrofPorts.

[0309] The UE expects that all CSI-RS resources of a resource set are configured with the same starting RB and number of RBs and the same cdm-type.

[0310] 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.

[0311] 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 configured by the higher layer parameter freqBand in the CSI-RS-ResourceMapping IE, respectively. 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

[0312] 5.2.2.5 CSI reference resource definition

[0313] The CSI reference resource of the serving cell is defined as follows:

[0314] - 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.

[0315] - 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,

[0316] -in and μ DL and μ UL are the subcarrier spacing configurations for DL ​​and UL, respectively, and offset and μ offset Determined by the higher layer configured ca-SlotOffset of the cell for transmitting uplink and downlink, as defined in section 4.5 of [4, TS 38.211].

[0317] - For periodic and semi-persistent CSI reporting

[0318] - 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

[0319] - 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.

[0320] -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.

[0321] -When periodic or semi-persistent 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.

[0322] A timeslot in a serving cell is considered a valid downlink timeslot if:

[0323] - it includes at least one downlink or variable symbol configured by a higher layer, and

[0324] - It is not within a configured measurement gap for the UE.

[0325] If there is no valid downlink slot for CSI reference resources corresponding to the CSI reporting configuration in the serving cell, CSI reporting is omitted for the serving cell in uplink slot n.

[0326] 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 moment for channel measurement and CSI-RS and / or CSI-IM moment for interference measurement no later than the CSI reference resource, otherwise the report is discarded.

[0327] When DRX is configured, the UE reports the CSI report only when it receives at least one CSI-RS transmission instant for channel measurement and CSI-RS and / or CSI-IM instant 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 instant for each CSI-RS resource within 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, when drx-onDurationTimer is not started, the UE is configured by the higher layer parameter ps-TransmitOtherPeriodicCSI to report CSI with the higher layer parameter reportConfigType set to 'periodic' and reportQuantity set to a quantity other than 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index' and 'ssb-Index-RSRP-Index', then the UE shall report CSI according to the procedure described in clause 5.2.1.4 upon receiving at least one CSI-RS transmission instant for channel measurement and CSI-RS and / or CSI-IM instant for interference measurement of the CSI reference resource during the duration indicated by drx-onDurationTimer in DRX-Config outside the DRX active time range or not later than in the DRX active time, during the duration indicated by drx-onDurationTimer in DRX-Config also outside the active time range, otherwise discard the report.When the UE is configured to listen to DCI format 2_6 and if the UE is configured by the higher layer parameter ps-TransmitPeriodicL1-RSRP to report L1-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 Report L1-RSRP according to the procedure described in clause 5.2.1.4 during the duration indicated by drx-onDurationTimer in DRX-Config also outside the active time range and when reportQuantity is set to 'cri-RSRP' or 'cri-RSRP-Capability[Set]Index', during the duration indicated by drx-onDurationTimer in X-Config or no later than at least one CSI-RS transmission instant for channel measurement of the CSI reference resource in the DRX active time, otherwise discard the report.

[0328] 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 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.

[0329] RP-230566, RAN1#110 report and RAN1#110bis-e report provide some details about energy saving. One or more parts of RP-230566, RAN1#110 report and RAN1#110bis-e report are quoted as follows:

[0330] 4.1 Objectives of SI or core WI or test WI

[0331] The goals of the work items are as follows:

[0332] 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]

[0333] 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]

[0334] ●Note: Due to cell DTX / DRX, there is no change in SSB transmission.

[0335] ●Note: The impact on IDLE / INACTIVE UE caused by the above enhancements should be avoided.

[0336] 3. Specify the following techniques in the space and power domains

[0337] ● 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]

[0338] ● 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]

[0339] ●Note: The above targets are only for UE-specific channels / signals.

[0340] ● Note: When considering the total number of CSI reports and requests, the legacy UE CSI / CSI-RS capabilities apply

[0341] 4. Specify, where necessary, a mechanism to prevent legacy UEs from camping on cells using Rel-18 NES technology [RAN2]

[0342] 5. Enhancement of CHO procedure specified when source / target cell is in NES mode [RAN2]

[0343] 6. Enhancements to specify inter-node beam activation and restricted paging in limited areas [RAN3]

[0344] 7. Specify corresponding RRM / RF core requirements for the above features as necessary [RAN4]

[0345] protocol

[0346] To further discuss NES spatial domain adaptation in RAN1, consider the following scenario:

[0347] ● Type 1: All antenna elements associated with the logical antenna port are disabled / enabled

[0348] ● Type 2: Part / subset of antenna elements associated with a logical antenna port are disabled / enabled

[0349] protocol

[0350] For spatial component adaptation, the following are further studied:

[0351] ●A1-1) Each CSI-RS resource / resource set / resource setting can be associated with only one spatial adaptation mode

[0352] -FFS: Detailed information on how the association was made

[0353] ●A1-2) Each CSI-RS resource / resource set / resource setting can be associated with one or more spatial adaptation modes

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

[0355] ●FFS: Detailed information on the definition of "spatial adaptation mode"

[0356] protocol

[0357] For spatial component adaptation, the following are further studied:

[0358] ●A2-1) Independent / separate CSI reporting configurations, where each CSI reporting configuration corresponds to a spatial adaptation mode

[0359] ●A2-2) A CSI report configuration contains multiple CSI report sub-configurations, where each sub-configuration corresponds to a spatial adaptation mode

[0360] -FFS: Details of sub-configuration

[0361] protocol

[0362] For spatial domain adaptation, the required enhancement of multiple CSIs is further studied, where each CSI corresponds to a spatial adaptation mode, e.g.

[0363] ●FFS: The gNB indicates to the UE which CSI(s) the UE should report

[0364] ●FFS: UE chooses which CSI to report

[0365] ●FFS: Report multiple CSIs in a joint CSI report

[0366] ●FFS: Reduced overhead of multiple CSIs

[0367] Note: UE complexity needs to be considered.

[0368] protocol

[0369] In order to adapt the power offset value between PDSCH and CSI-RS, the following are further studied:

[0370] ● Where / how to configure multiple power offset values

[0371] ○ Whether / how to dynamically indicate one or more power offset values ​​to the UE for CSI measurement / reporting and PDSCH reception

[0372] ○ Reduced overhead for CSI reporting associated with multiple power offset values ​​between PDSCH and CSI-RS

[0373] ○ Whether it can include other UE report content

[0374] protocol

[0375] For spatial and power domain adaptation, solutions based on adaptation within the active BWP are considered as the baseline

[0376] protocol

[0377] Discussing the transmission aspects of spatial / power domain adaptation for Rel-18 NES capable UEs, consider

[0378] ●Whether each adaptation requires transition time (for UE)

[0379] • Whether / how to inform the UE of the spatial adaptation pattern update and / or the PDSCH / CSI-RS transmit power change due to adaptation.

[0380] protocol

[0381] RAN1 continues to discuss at least the following physical layer related aspects of cell DTX / DRX

[0382] ○ Physical layer signals / channels and procedures expected to be affected during inactive periods of cell DTX / DRX

[0383] ■ When the physical layer / signal / channel is affected by cell DTX / DRX, consider the impact of SI on at least KPI

[0384] ●Further discussion on other aspects is not excluded.

[0385] protocol

[0386] Consider at least the following candidate signals / channels for connected mode UEs from the perspective of RAN1 for further discussion, which the UE may be expected not to transmit or receive during inactive periods of cell DTX / DRX. The exact set of signals / channels that the UE may be expected not to transmit or receive is FFS.

[0387] ●DL

[0388] ○Periodic / semi-persistent CSI-RS (including TRS)

[0389] ○PRS

[0390] ○ PDCCH scrambled with UE-specific RNTI

[0391] ○PDCCH in Type 3 CSS

[0392] ○SPS-PDSCH

[0393] UL

[0394] ○SR

[0395] ○Periodic / semi-persistent CSI reporting

[0396] ○Periodic / semi-persistent SRS

[0397] ○CG-PUSCH

[0398] Other signals / channels are not excluded

[0399] In some examples, 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 CSI-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 the sets of measurement results (for the multiple CSI-RSs). The UE may select and / or report a first CSI-RS with the strongest signal strength among the multiple CSI-RSs (e.g., the first CSI-RS may be associated with the strongest beam among 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 the measurement result set) associated with the first CSI-RS and other measurement results (in the measurement result set) associated with other CSI-RSs among the multiple CSI-RSs. In an instance, the one or more first measurement results may indicate a signal strength associated with the first CSI-RS. The UE may report to the base station 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)). However, if there is an adaptation associated with the CSI-RS (e.g., due to network energy saving occurring during multiple CSI-RS periods and / or due to the base station transitioning from normal operation to network energy saving operation during multiple CSI-RS periods), the base station (and / or the UE) 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 turning off some or all CSI-RSs; (ii) the base station reducing the transmission (TX) power used for the CSI-RSs; and / or (iii) the base station reducing the number of antenna ports used for the CSI-RSs.

[0400] In an example, the plurality of CSI-RSs may include 8 CSI-RSs associated with 8 CSI-RS resources (e.g., 8 CSI-RS moments). After 5 CSI-RS resources (e.g., 5 CSI-RS moments) 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 transmit power, turning off the CSI-RS, etc. The adaptation may be applied to the remaining 3 CSI-RS resources (e.g., 3 CSI-RS moments). In an example where the adaptation includes adapting the number of antenna ports from four to one, the base station may transmit CSI-RS via five CSI-RS resources using four antenna ports (e.g., each of the five CSI-RS resources may be used to transmit CSI-RS using four antenna ports), and the base station may transmit CSI-RS via three remaining CSI-RS resources using one antenna port (e.g., each of the three remaining CSI-RS resources may be used to transmit CSI-RS using one antenna port). In an example where the adaptation includes adapting the transmit power from 30 dB milliWatt (dBm) to 21 dBm, the base station may transmit CSI-RS via five CSI-RS resources using approximately 30 dBm (e.g., each of the five CSI-RS resources may be used to transmit CSI-RS using approximately 30 dBm), and the base station may transmit CSI-RS via three remaining CSI-RS resources using 21 dBm (e.g., each of the three remaining CSI-RS resources may be used to transmit CSI-RS using 21 dBm). In an instance where the adaptation includes turning off the CSI-RS (e.g., deactivating the CSI-RS functionality), the base station may transmit the CSI-RS via 5 CSI-RS resources, and the base station may not 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.

[0401] 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).

[0402] 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 the 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 the second number of antenna ports to transmit one or more CSI-RS to the UE using one or more CSI-RS resources.

[0403] 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.

[0404] In an example, the adaptation includes turning off the CSI-RS (e.g., deactivating the CSI-RS function). For example, before the adaptation, the base station may use 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 not use the one or more CSI-RS resources to transmit the one or more CSI-RS to the UE.

[0405] A first 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., a first adaptation condition before only adaptation or a second adaptation condition after adaptation). In some instances, the CSI report may not be derived based on other of 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 of the adaptation conditions, e.g., 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).

[0406] 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 on (e.g., the CSI-RS function is activated) and / or the first adaptation condition is associated with CSI-RS off (e.g., the CSI-RS function is deactivated).

[0407] In an example, the CSI report may be derived based on an adaptation condition (among the adaptation conditions) with lower energy consumption (e.g., lower Tx power, smaller number of antenna ports, off). 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 off (e.g., CSI-RS function is deactivated) and / or the second adaptation condition is associated with CSI-RS on (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 off (e.g., the CSI-RS function is deactivated) and / or the first adaptation condition is associated with CSI-RS on (e.g., the CSI-RS function is activated).

[0408] The second concept of the present disclosure is to derive a CSI report based on 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.

[0409] 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 the lower number of antenna ports in the two adaptation cases to derive the CSI report (e.g., the lower number of antenna ports may correspond to the minimum value in the value set 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 four to two (e.g., for each CSI-RS resource and / or time instant), the UE may use two antenna ports to: (i) derive a CSI report for a CSI-RS resource and / or time instant before the adaptation; and (ii) derive a CSI report for a CSI-RS resource / time instant after the adaptation. In some examples, the two antenna ports may be common between the two adaptation cases (e.g., the two antenna ports may be used before the adaptation in the first adaptation case and / or after the adaptation in the second adaptation case). The two antenna ports may share the same pattern and / or resource elements (and / or may be shared to the same pattern and / or resource elements) between the two adaptation cases. Prior to adaptation, the UE may derive CSI reports using two of the four antenna ports (eg, and not derive CSI reports based on the remaining two of the four antenna ports other than the two antenna ports).

[0410] In instances where the adaptation is associated with adapting the transmit power from a first transmit power to a (different) second transmit power, when deriving measurements (e.g., quantities) associated with the CSI report (e.g., the UE may include the measurements in the CSI report and / or use the measurements to generate the CSI report), the UE may consider the power adaptation to compensate for the power difference between the first transmit power and the second transmit power. In an example, when the transmit power is reduced by 6 dB due to the 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 measurements (e.g., reference signal received power (RSRP)) associated with the CSI-RS resources (and / or time instants) after the adaptation (e.g., where the 6 dB is not added to the measurements associated with the CSI-RS resources and / or time instants before the adaptation). Alternatively and / or in addition, when the transmit power is reduced by 6 dB due to power adaptation, the UE may reduce (e.g., subtract) the measurement result (e.g., RSRP) associated with the CSI-RS resources (and / or time) before the adaptation by 6 dB (e.g., where the measurement result associated with the CSI-RS resources and / or time after the adaptation is not reduced by 6 dB).

[0411] 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 transmission of the last CSI-RS resource in the multiple CSI-RS resources (e.g., for the CSI report) before performing (e.g., CSI-RS) adaptation.

[0412] 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 an initial CSI-RS resource among the multiple CSI-RS resources and / or before a 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 an initial CSI-RS resource among the multiple CSI-RS resources and / or before a last CSI-RS resource among the multiple CSI-RS resources.

[0413] Example 1

[0414] 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 may receive an indication indicating adaptation (e.g., from a base station). 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 greater 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 greater than the second transmission power. The indication may indicate that the CSI-RS is adapted from on to off. 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.

[0415] 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).

[0416] 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).

[0417] 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.

[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, the UE may receive an indication indicating adaptation (e.g., from a base station). 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 greater 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 greater than the second transmission power. The indication may indicate that the CSI-RS is adapted from on to off. 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.

[0420] 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 of 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 for 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-RSs for one or more resource elements 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 results (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 result (e.g., the measured quantity measured after the adaptation) to determine an updated measurement result (e.g., which takes into account the adaptation), wherein the UE may use the updated measurement result to derive a CSI report. Alternatively and / or in addition, the UE may subtract the power difference from the measurement result (e.g., the measured quantity measured before the adaptation) to determine an updated measurement result (e.g., which takes into account the adaptation), wherein the UE may use the updated measurement result to derive a CSI report.

[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, the UE may receive an indication indicating adaptation (e.g., from a base station). 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 greater 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 greater than the second transmission power. The indication may indicate that the CSI-RS is adapted from on to off. 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.

[0423] 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.

[0424] In some examples, the embodiments disclosed herein, such as the embodiments described with respect to 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, such as one, some, and / or all of the described embodiments with respect to the first concept, the second concept, the third concept, the fourth concept, Example 1, Example 2, and / or Example 3, can be implemented. Alternatively and / or additionally, a combination of the embodiments described herein, such as one, some, and / or all of the described embodiments with respect to the first concept, the second concept, the third concept, the fourth concept, Example 1, Example 2, and / or Example 3, can be implemented in parallel and / or simultaneously.

[0425] The various techniques, embodiments, methods and / or alternatives of the present disclosure may be performed independently and / or individually. 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.

[0426] 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.

[0427] 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.

[0428] Unless otherwise stated, the present disclosure may describe the behavior and / or operation when the 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 the base station and / or UE when the CSI-RS (associated with the base station and / or UE) is adapted from on to off. The techniques and / or systems provided herein may be implemented on the base station and / or UE when the CSI-RS (associated with the base station and / or UE) is adapted from on to off.

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

[0430] Unless otherwise stated, the present disclosure may describe behaviors and / or operations 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 behaviors and / or operations 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).

[0431] 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 not 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).

[0432] 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.

[0433] Unless otherwise specified, 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.

[0434] Unless otherwise specified, 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.

[0435] Throughout this disclosure, unless otherwise stated, a base station may configure multiple bandwidth parts for a UE (eg, the base station configures multiple bandwidth parts for a UE).

[0436] Throughout this disclosure, unless otherwise stated, a base station may configure a single bandwidth portion for a UE (eg, the base station configures a single bandwidth portion for a UE).

[0437] One, some and / or all of the foregoing examples, concepts, techniques and / or embodiments may be formed and / or combined into new embodiments.

[0438] 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 (e.g., determines, calculates, and / or generates) a CSI report based on a first portion of the plurality of CSI-RS resources. The first portion may include a subset of (one or more) CSI-RS resources in the plurality of CSI-RS resources (e.g., a first subset of CSI-RS resources before an adaptation time and / or a second subset of CSI-RS resources after an adaptation time). For example, the UE may use the first portion of the plurality of CSI-RS resources to determine CSI to be included in the CSI report. For example, the CSI included in the CSI report may be determined based on the first portion of the plurality of CSI-RS resources (and / or the CSI report may include CSI determined based only on the first portion of the plurality of CSI-RS resources).

[0439] In one embodiment, the UE does not derive the CSI report based on the second portion of the plurality of CSI-RS resources. The second portion may include a subset of (one or more) CSI-RS resources in the plurality of CSI-RS resources (e.g., a first subset of CSI-RS resources before an adaptation time and / or a second subset of CSI-RS resources after an adaptation time). For example, the UE may not consider the second portion of the plurality of CSI-RS resources to determine the CSI to be included in the CSI report. For example, the CSI included in the CSI report may be determined based on the second portion of the plurality of CSI-RS resources (and / or the CSI report may not include the CSI determined based on the second portion of the plurality of CSI-RS resources).

[0440] In one embodiment, the UE derives a CSI report based on one or more CSI-RS resources (e.g., a subset of CSI-RS resources in the plurality of CSI-RS resources) prior to adaptation. For example, a first portion of the plurality of CSI-RS resources (based on which the UE derives the CSI report) may include a first subset of CSI-RS resources associated with one or more times prior to an adaptation time of the adaptation.

[0441] In one embodiment, the UE does not derive a CSI report based on one or more CSI-RS resources (e.g., a subset of CSI-RS resources in the plurality of CSI-RS resources) after the adaptation. For example, the second portion of the plurality of CSI-RS resources (based on which the UE does not derive a CSI report) may include a second subset of CSI-RS resources associated with one or more times after the adaptation time of the adaptation.

[0442] In one embodiment, the UE derives a CSI report based on one or more CSI-RS resources (e.g., a subset of CSI-RS resources in the plurality of CSI-RS resources) after the adaptation. For example, the first portion of the plurality of CSI-RS resources (based on which the UE derives the CSI report) may include a second subset of CSI-RS resources associated with one or more times after the adaptation time of the adaptation.

[0443] In one embodiment, the UE does not derive a CSI report based on one or more CSI-RS resources (e.g., a subset of CSI-RS resources in the plurality of CSI-RS resources) prior to adaptation. For example, the second portion of the plurality of CSI-RS resources (based on which the UE does not derive a CSI report) may include a first subset of CSI-RS resources associated with one or more times prior to an adaptation time of the adaptation.

[0444] 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 use one or more CSI-RS resources (e.g., a first subset of CSI-RS resources before an adapted adaptation time) to transmit and / or receive one or more CSI-RS. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use the second number of ports to use one or more CSI-RS resources (e.g., a second subset of CSI-RS resources after an adapted adaptation time) to transmit and / or receive one or more CSI-RS.

[0445] 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 use one or more CSI-RS resources (e.g., a first subset of CSI-RS resources before the adapted adaptation time) to transmit the one or more CSI-RS. Alternatively and / or in addition, after the adaptation, the base station may use the second transmit power to use one or more CSI-RS resources (e.g., a second subset of CSI-RS resources after the adapted adaptation time) to transmit the one or more CSI-RS.

[0446] In one embodiment, the adaptation is associated with turning off the CSI-RS (e.g., deactivating the CSI-RS function). For example, before the adaptation, the base station may use one or more CSI-RS resources (e.g., a first subset of CSI-RS resources before the adapted adaptation time) to transmit one or more CSI-RS to the UE. Alternatively and / or in addition, after the adaptation, the base station may stop transmitting the CSI-RS to the UE and / or may not use one or more CSI-RS resources (e.g., a second subset of CSI-RS resources after the adapted adaptation time) to transmit one or more CSI-RS to the UE (e.g., the UE may not receive the CSI-RS via the second subset of CSI-RS resources after the adapted adaptation time).

[0447] In one embodiment, the UE uses a configuration (e.g., a CSI report configuration) from a second base station (which may be the same as or different from the base station) to determine whether to derive a CSI report based on one or more CSI-RS resources before adaptation (e.g., a first subset of CSI-RS resources) or based on one or more CSI-RS resources after adaptation (e.g., a second subset of CSI-RS resources). For example, the UE may receive the configuration from the second base station before the adaptation time of the adaptation. In an example, the UE derives the CSI report based on the first subset of CSI-RS resources before adaptation based on the configuration indicating a first value, and / or the UE derives the CSI report based on the second subset of CSI-RS resources after adaptation based on the configuration indicating a second value different from the first value.

[0448] In one embodiment, the UE determines whether to derive a CSI report based on one or more CSI-RS resources before adaptation (e.g., a first subset of CSI-RS resources) or based on one or more CSI-RS resources after adaptation (e.g., a second subset of CSI-RS resources) based on an adaptation type of the adaptation. In an example, the UE derives the CSI report based on the first subset of CSI-RS resources before adaptation based on the adaptation being a first adaptation type (e.g., at least one of adapting the number of ports, adapting the transmit power, turning off the CSI-RS, etc.), and / or the UE derives the CSI report based on the second subset of CSI-RS resources after adaptation based on the adaptation being a second adaptation type different from the first adaptation type (e.g., at least one of adapting the number of ports, adapting the transmit power, turning off the CSI-RS, etc.).

[0449] In one embodiment, the UE determines whether to derive a CSI report based on one or more CSI-RS resources before adaptation (e.g., a first subset of CSI-RS resources) or based on one or more CSI-RS resources after adaptation (e.g., a second subset of CSI-RS resources) based on power consumption. In an example, the UE derives the CSI report based on the first subset of CSI-RS resources before adaptation based on power consumption satisfying (e.g., being greater than or less than) a power consumption threshold, and / or the UE derives the CSI report based on the second subset of CSI-RS resources after adaptation based on power consumption not satisfying the power consumption threshold.

[0450] In some instances, the UE derives a CSI report based on one or more CSI-RS received via a first portion of the plurality of CSI-RS resources (e.g., in step 615). For example, for each CSI-RS resource in one, some, or all of the first portion of the plurality of CSI-RS resources, the UE may: (i) monitor and / or receive (e.g., from a base station) a CSI-RS 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 a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), a CSI-RS resource indicator (CRI), a layer indicator (L1), a layer 1 reference signal received power (L1-RSRP), a layer 1 signal to interference and noise ratio (L1-SINR), etc.). For example, the first portion of the plurality of CSI-RS resources may include a first CSI-RS resource, a second CSI-RS resource, and / or one or more other CSI-RS resources. Thus, the UE may determine a set of measurements (eg, signal strength measurements) associated with a first portion of the plurality of CSI-RS resources. For example, the measurement result set may include a first measurement result associated with a first CSI-RS resource (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 the first CSI-RS via the first CSI-RS resource, and / or (ii) measure the first CSI-RS to determine the first measurement result associated with the first CSI-RS resource), a second measurement result associated with a second CSI-RS resource (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 the second CSI-RS via the second CSI-RS resource, and / or (ii) measure the second CSI-RS to determine the second measurement result associated with the second CSI-RS resource), and / or one or more other measurement results associated with one or more other CSI-RS resources in the first part of the multiple CSI-RS resources.

[0451] In some instances, the UE may derive a CSI report based on a measurement result set associated with a first portion of multiple CSI-RS resources. For example, the UE may: (i) compare the measurement result set associated with the first portion of multiple CSI-RS resources to select a selected CSI-RS resource in the first portion of multiple CSI-RS resources (e.g., the selected CSI-RS resource may be selected based on: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength in the first portion of multiple CSI-RS resources); and / or (ii) generate a CSI report to include CSI, wherein the CSI includes: (A) the selected CSI-RS resource and the first portion of the multiple 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 may 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 the CSI-RS received via the selected CSI-RS resource).

[0452] In one embodiment, the CSI report is not derived based on one or more CSI-RS received via the second portion of the plurality of CSI-RS resources (e.g., in step 615). In some instances, the UE may monitor and / or receive CSI-RS via one or more CSI-RS resources in the second portion of the plurality of CSI-RS resources. Alternatively and / or in addition, the UE may not monitor (and / or may not receive) CSI-RS via one or more CSI-RS resources in the second portion of the plurality of CSI-RS resources. In some instances, the UE may determine a second set of measurement results associated with one or more CSI-RS resources in the second portion of the plurality of CSI-RS resources. Alternatively and / or in addition, the UE may not determine the measurement results associated with one or more CSI-RS resources in the second portion of the plurality of CSI-RS resources. In some instances, the UE may not consider the second set of measurement results when determining the CSI to be included in the CSI report (e.g., selected CSI-RS resources, selected CSI-RS resource measurements, selected CSI-RS resource IDs, selected CSI-RS IDs, etc.). In some examples, the selected CSI-RS resource may be selected from a list of CSI-RS resources, which may include a first portion of the plurality of CSI-RS resources and / or may not include a second portion of the plurality of CSI-RS resources.

[0453] Return to reference Figure 3 and4 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) be instructed to adapt the CSI-RS transmitted by the base station; (ii) be configured with a plurality of CSI-RS resources for deriving a CSI report, 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, and (iii) derive a CSI report based on a first portion of the plurality of 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.

[0454] 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 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 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 transmit power.

[0455] 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 base station may transmit one or more CSI-RS using one or more CSI-RS resources using a first transmission power (wherein the one or more CSI-RS transmitted using the first transmission power may be received by the UE). Alternatively and / or in addition, after the adaptation, the UE and / or the base station may transmit one or more CSI-RS using one or more CSI-RS resources using a second transmission power (wherein the one or more CSI-RS transmitted using the second transmission power may be received by the UE).

[0456] 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 a 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 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).

[0457] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0458] In some instances, the UE may derive a CSI report based on a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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.

[0459] 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).

[0460] In one embodiment, the first transmit power is greater than the second transmit power.

[0461] In one embodiment, the first transmit power is less than the second transmit power.

[0462] 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 results to the base station.

[0463] In one embodiment, the first transmit power is associated with the first sub-configuration.

[0464] In one embodiment, the second transmit power is associated with the second sub-configuration.

[0465] 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.

[0466] 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.

[0467] 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 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 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 transmit power (and / or based on whether the base station has transmitted a CSI-RS associated with the second transmit power to the UE).

[0468] 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 base station may transmit one or more CSI-RS using one or more CSI-RS resources using a first transmission power (wherein the one or more CSI-RS transmitted using the first transmission power may be received by the UE). Alternatively and / or in addition, after the adaptation, the UE and / or the base station may transmit one or more CSI-RS using one or more CSI-RS resources using a second transmission power (wherein the one or more CSI-RS transmitted using the second transmission power may be received by the UE).

[0469] 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).

[0470] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0471] In some instances, the UE may derive a CSI report based on a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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 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 can communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0472] 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.

[0473] In one embodiment, the first transmit power is greater than the second transmit power.

[0474] In one embodiment, the first transmit power is less than the second transmit power.

[0475] 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 results to the base station.

[0476] In one embodiment, the first transmit power is associated with the first sub-configuration.

[0477] In one embodiment, the second transmit power is associated with the second sub-configuration.

[0478] 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.

[0479] 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.

[0480] 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).

[0481] Fig. 9 900 according to an exemplary embodiment from the perspective of a UE. In step 905, 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 the indication of activation from the 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 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 in an active period in one or more active periods.

[0482] In some instances, activation of cell DTX is performed by a base station and / or a UE. In some instances, prior to activation of 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 activation of 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 frequently during one or more active periods of cell DTX compared to one or more inactive periods.

[0483] 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).

[0484] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0485] In some instances, the UE may derive a CSI report based on a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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.

[0486] 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 generation and / or transmission of 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).

[0487] 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.

[0488] 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.

[0489] 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 results to the base station.

[0490] In one embodiment, the CSI report includes CQI, PMI, RI, CRI, LI, L1-RSRP and / or L1-SINR.

[0491] 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 of 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.

[0492] Fig.10 1000 is a flow chart according to an exemplary embodiment from the perspective of a base station. In step 1005, the base station transmits an indication of activation of 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 1010, 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 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).

[0493] In some instances, activation of cell DTX is performed by a base station and / or a UE. In some instances, prior to activation of 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 activation of 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 frequently during one or more active periods of cell DTX compared to one or more inactive periods.

[0494] 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 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.

[0495] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0496] In some instances, the UE may derive a CSI report based on a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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 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 can communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0497] 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 reception of the CSI report until the UE has received one or more CSI-RS in the active period of cell DTX.

[0498] 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.

[0499] 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.

[0500] 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 results to the base station.

[0501] In one embodiment, the CSI report includes CQI, PMI, RI, CRI, LI, L1-RSRP and / or L1-SINR.

[0502] 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 can 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 can 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.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 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 multiple 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 multiple CSI-RS resources (e.g., the UE receives the configuration from a base station), and / or uses the configuration to configure 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 associated with the second number of ports.

[0504] 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 port number to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, before the adaptation, an antenna port set equivalent to the first port number may be used to transmit the CSI-RS to the UE by the base station via a CSI-RS resource in multiple CSI-RS resources. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second port number to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, after the adaptation, an antenna port set equivalent to the second port number may be used to transmit the CSI-RS to the UE by the base station via a CSI-RS resource in multiple CSI-RS resources.

[0505] 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).

[0506] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., 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 a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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.

[0508] 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 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).

[0509] In one embodiment, the first number of ports is greater than the second number of ports.

[0510] In one embodiment, the first number of ports is less than the second number of ports.

[0511] In one embodiment, the first number of ports is one, two, four, eight, or other values.

[0512] In one embodiment, the second number of ports is one, two, four, eight or other values.

[0513] 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 results to the base station.

[0514] In one embodiment, the first number of ports is associated with the first sub-configuration.

[0515] In one embodiment, the second number of ports is associated with the second sub-configuration.

[0516] 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.

[0517] 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.

[0518] 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 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 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 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 1215, 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).

[0519] 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 port number to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, before the adaptation, an antenna port set equivalent to the first port number may be used to transmit the CSI-RS to the UE by the base station via a CSI-RS resource in multiple CSI-RS resources. Alternatively and / or in addition, after the adaptation, the UE and / or the base station may use a second port number to transmit and / or receive one or more CSI-RS using one or more CSI-RS resources. For example, after the adaptation, an antenna port set equivalent to the second port number may be used to transmit the CSI-RS to the UE by the base station via a CSI-RS resource in multiple CSI-RS resources.

[0520] In one embodiment, based on determining that the UE receives one or more first CSI-RS associated with the second port number, 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 port number).

[0521] For example, the UE may: (i) monitor and / or receive (e.g., from a base station) one or more first CSI-RSs 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 measurement result set 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 measurement result set may include a first measurement result associated with a first CSI-RS resource and / or a first CSI-RS (e.g., 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 (e.g., at least one of CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, etc.), and / or one or more other measurement results.

[0522] In some instances, the UE may derive a CSI report based on a measurement result set associated with one or more first CSI-RSs. For example, the UE may: (i) compare the measurement result set 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: determining, based on the measurement result set, that the selected CSI-RS resource is associated with the strongest signal strength of 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 of 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 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 can communicate using the beam and / or channel associated with the selected CSI-RS resource.

[0523] 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.

[0524] In one embodiment, the first number of ports is greater than the second number of ports.

[0525] In one embodiment, the first number of ports is less than the second number of ports.

[0526] In one embodiment, the first number of ports is one, two, four, eight, or other values.

[0527] In one embodiment, the second number of ports is one, two, four, eight or other values.

[0528] 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 results to the base station.

[0529] In one embodiment, the first number of ports is associated with the first sub-configuration.

[0530] In one embodiment, the second number of ports is associated with the second sub-configuration.

[0531] 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.

[0532] 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 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 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.

[0533] 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).

[0534] 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 program code stored in the memory to perform Figure 6-12 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.

[0535] 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 the execution of the processor executable instructions. Figure 6-12 One, some and / or all of the method steps shown in and / or one, some and / or all of the actions and steps described above and / or other actions and steps described herein.

[0536] 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.

[0537] Various aspects of the present disclosure have been described above. It should be understood 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 of these aspects can be combined in various ways. For example, using any number of aspects set forth herein, a device can be implemented or a method can be practiced. In addition, using other structures, functions, or structures and functions other than one or more of the aspects set forth herein or different from one or more 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.

[0538] Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different technologies. 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.

[0539] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, processors, components, circuits, and algorithm steps described in conjunction with the aspects disclosed herein may be implemented as electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of both, which may be designed using source decoding or some other technique), various forms of program or design code incorporating instructions (which may be referred to herein for convenience as "software" or "software modules"), or a combination of both. To clearly illustrate this 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. Those skilled in the art may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

[0540] 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 ("integrated circuit", IC), an access terminal, or an access point. An 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 an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, for example, 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.

[0541] It should be understood that any specific order or hierarchy of steps in any disclosed process is an example of a sample method. It should be understood that based on design preferences, 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 elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.

[0542] 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 computer-readable storage medium known in the art. A sample 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. A sample 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 may include a computer-readable medium, which includes a code related to one or more of the aspects of the present disclosure. In some aspects, a computer program product may include packaging materials.

[0543] 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 variations, 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 adaptation associated with a channel state information reference signal, wherein: The adapting is associated with switching from a first number of ports to a second number of ports; 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 associated with the second port number.

2. The method according to claim 1, characterized in that include: In response to receiving one or more first channel state information reference signals associated with the second number of ports, at least one of the following is performed: deriving 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 associated with the second port number, the user equipment determines not to transmit the channel state information report.

4. The method according to claim 1, characterized in that: The first number of ports is greater than the second number of ports.

5. The method according to claim 1, characterized in that: The first number of ports is less than the second number of ports.

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 first number of ports is associated with a first sub-configuration.

8. The method according to claim 1, characterized in that: The second number of ports is associated with a second sub-configuration.

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

10. A method of a base station, characterized in that: include: transmitting, to a user equipment, an indication of an adaptation associated with a channel state information reference signal, wherein the adaptation is associated with switching from a first number of ports to a second number of ports; 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 associated with the second port number.

11. The method according to claim 10, characterized in that include: Based on determining that the user equipment receives one or more first channel state information reference signals associated with the second port number, at least one of the following is performed: monitoring the channel state information report; or The channel state information report is received.

12. The method according to claim 10, characterized in that: Based on determining that the user equipment has not received a channel state information reference signal associated with the second port number, the base station determines not to at least one of monitor or receive the channel state information report.

13. The method according to claim 10, characterized in that: The first number of ports is greater than the second number of ports.

14. The method according to claim 10, characterized in that: The first number of ports is less than the second number of ports.

15. The method according to claim 10, characterized in that: The plurality of channel state information reference signal resources are associated with channel measurement.

16. The method according to claim 10, characterized in that: The first number of ports is associated with a first sub-configuration.

17. The method according to claim 10, characterized in that: The second number of ports is associated with a second sub-configuration.

18. A user equipment, characterized in that: include: Control circuit; a processor 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, the operations comprising: receiving an indication of adaptation associated with a channel state information reference signal, wherein: The adapting is associated with switching from a first number of ports to a second number of ports; 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 associated with the second port number.

19. The user equipment according to claim 18, characterized in that The operations include: In response to receiving one or more first channel state information reference signals associated with the second number of ports, at least one of the following is performed: deriving 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.

20. The user equipment according to claim 18, characterized in that: In response to not receiving a channel state information reference signal associated with the second port number, the user equipment determines not to transmit the channel state information report.

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