Systems and methods for cooperative transmission and feedback

Abstract

A user equipment (UE) may measure reference signal (RS) transmitted on one or more RS resources, thereby generating RS measurements. The UE may determine an RS resource in the one or more RS resources as a first resource type in a plurality of resource types according to the RS measurement result and a reporting rule, generate a channel state information (CSI) report indicating that the RS resource is determined as the first resource type according to the determination result, and then report the CSI report.

Description

[0001] This application is a divisional application. The application number of the original application is 202080104732.9, and the original application date is July 30, 2020. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present disclosure relates generally to wireless communications and, in particular embodiments, to a system and method for cooperative transmission and feedback. Background Art

[0003] Wireless communication systems include long term evolution (LTE), LTE-A, systems beyond LTE-A, fifth-generation (5G) LTE, 5G new radio (NR), etc. Modern wireless communication systems may include multiple NodeBs (NBs), which may also be referred to as base stations, network nodes, communication controllers, cells, or enhanced NBs (eNBs), etc. NodeBs may include one or more network points or network nodes using different radio access technologies (RATs), such as high speed packet access (HSPA) NBs or wireless fidelity (Wi-Fi) access points. NodeBs may be associated with a single network point or multiple network points. A cell may include a single network point or multiple network points, each of which may have a single antenna or multiple antennas. A network point may correspond to multiple cells operating in multiple component carriers. Typically, each component carrier in carrier aggregation is a serving cell, i.e., a primary cell (PCell) or a secondary cell (SCell).

[0004] A cell or NodeB can serve multiple users (also commonly referred to as user equipment (UE), mobile station, terminal, device, etc.) in a period of time. The communication channel from the base station to the UE is usually called a downlink (DL) channel, so the transmission from the base station to the UE is a downlink transmission. The communication channel from the UE to the base station is usually called an uplink (UL) channel, so the transmission from the UE to the base station is an uplink transmission.

[0005] Typically, in order to provide any data channel in uplink or downlink transmission, such as physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH), reference signals are transmitted. There are reference signals used by the UE to perform channel / signal estimation / measurement, demodulate the physical downlink control channel (PDCCH) and other common channels, and perform some measurements and feedback, such as the common / cell-specific reference signal (CRS) of the Release 8 / 9 specification of the evolved universal terrestrial radio access (E-UTRA). A dedicated / demodulation reference signal (DMRS) can be transmitted with the PDSCH in Release 10 of E-UTRA. DMRS is used for channel estimation during PDSCH demodulation. In subsequent E-UTRA releases and NR, DMRS is used for channel estimation during PDCCH / PDSCH / PUSCH / PBCH demodulation. In Release 10, in addition to CRS and DMRS, a channel state information reference signal (CSI-RS) is introduced. CSI-RS is used by UEs in Release 10 to measure channel states, especially in multi-antenna situations. Precoding matrix indicator (PMI) / CQI / RI and other feedback information can be used to perform CSI-RS measurements based on UEs in Release 10 and above. PMI is the precoding matrix indication, CQI is the channel quality indication, and RI is the rank indication of the precoding matrix. CSI-RS in Release 10 supports up to 8 transmit antennas, while CRS in Release 8 / 9 supports up to 4 transmit antennas. The number of CSI-RS antenna ports can be 1, 2, 4, or 8. In addition, in order to support the same number of antenna ports, the CSI-RS overhead is lower due to the low density of CSI-RS in time and frequency. In Release 13, beamforming / precoded CSI-RS was introduced, and the UE can be configured to receive one or more precoded CSI-RS and report CSI with the associated precoded CSI-RS resource index (CRI). In NR, 16 and 32 ports in CSI-RS are supported.

[0006] Public Content

[0007] Technical advantages are generally achieved by the disclosed embodiments, which describe a system and method for collaborative transmission and feedback.

[0008] According to one aspect of the present disclosure, a method is provided, the method comprising: a user equipment (UE) receives an RS on one or more reference signal (RS) resources; the UE measures the RS received on the one or more RS resources to generate an RS measurement result; the UE determines a first RS resource among the one or more RS resources as a first resource type among a first plurality of resource types based on the RS measurement result and a first reporting rule; and the UE sends a first channel state information (CSI) report indicating that the first RS resource is the first resource type.

[0009] This enables the UE to determine or select the type of RS resources and report the result of the determination or selection, which facilitates the network to perform link adaptation to communicate with the UE and other UEs.

[0010] Optionally, in any of the above aspects, the first CSI report includes a first channel quality indicator (CQI) value obtained according to a determination result of the first RS resource.

[0011] Optionally, in any of the above aspects, the method also includes: the UE associating the first RS resource with the first resource type.

[0012] Optionally, in any of the above aspects, the one or more RS resources include one or more ports, and each RS resource includes one or more ports.

[0013] Optionally, in any of the above aspects, the one or more RS resources are configured as a non-zero power channel state information-reference signal (NZP CSI-RS) resource setting, an NZP CSI-RS resource set or an NZP CSI-RS resource.

[0014] Optionally, in any of the above aspects, at least one port, one RS resource of the one or more RS resources, the NZP CSI-RS resource setting, the NZP CSI-RS resource set or the NZP CSI-RS resource is configured to the UE as a measurement resource determined by the UE.

[0015] Optionally, in any of the above aspects, the first plurality of resource types include resources for channel measurement, resources for interference measurement, zero power resources and silent resources.

[0016] Optionally, in any of the above aspects, the first resource type is a resource used for channel measurement, a resource used for interference measurement, a zero power resource or a silent resource.

[0017] Optionally, in any of the above aspects, the one or more RS resources and the first reporting rule are associated with a CSI reporting configuration (also referred to as a CSI reporting configuration, a CSI reporting setting or a CSI reporting setting).

[0018] Optionally, in any of the above aspects, the one or more RS resources are quasi co-located (QCLed) with the same channel state information-reference signal (CSI-RS) used for tracking or the same synchronization signal block (SSB).

[0019] Optionally, in any of the above aspects, a first subset of the one or more RS resources is quasi-co-located with a first CSI-RS or a first SSB used for tracking, and a second subset of the one or more RS resources is quasi-co-located with a second CSI-RS or a second SSB used for tracking.

[0020] Optionally, in any of the above aspects, the method also includes: the UE determines a second RS resource among the one or more RS resources as a second resource type among a second plurality of resource types based on the RS measurement result and the second reporting rule, and the UE generates a second CSI report indicating that the second RS resource is determined as the second resource type based on the determination result; and the UE reports the second CSI report.

[0021] Optionally, in any of the above aspects, the first plurality of resource types are the same as or different from the second plurality of resource types, and the first resource type is the same as or different from the second resource type.

[0022] Optionally, in any of the above aspects, the second reporting rule and the first reporting rule are associated with the same CSI reporting configuration or different CSI reporting configurations.

[0023] Optionally, in any of the above aspects, the method also includes: the UE determines a third RS resource among the one or more RS resources as a third resource type among the multiple resource types based on the RS measurement result and the first reporting rule; and the UE reports the result of determining the third RS resource as the third resource type.

[0024] Optionally, in any of the above aspects, the first resource type is the same as or different from the third resource type.

[0025] Optionally, in any of the above aspects, the SNR value of the first RS resource is greater than a threshold.

[0026] Optionally, in any of the above aspects, the first reporting rule specifies efficiency requirements, CQI requirements, signal to noise ratio (SNR) requirements, signal to interference and noise ratio (SINR) requirements or rank requirements, and the UE determines whether the RS resource is one of the multiple resource types based on the efficiency requirements, the CQI requirements, the SNR requirements, the SINR requirements or the rank requirements and reports the determination result.

[0027] Optionally, in any of the above aspects, the method also includes: based on the result of selecting the first RS resource as the first resource type, the UE obtains a CQI value, SNR, SINR or rank value to generate a corresponding efficiency value; the UE determines whether the efficiency value meets the efficiency requirement, or whether the CQI value meets the CQI requirement, or whether the SNR / SINR meets the SNR / SINR requirement, or whether the rank value meets the rank requirement; and when it is determined that the efficiency value / CQI value / SNR / SINR / rank value respectively meet the efficiency / CQI / SNR / SINR / rank requirements, the UE determines the first RS resource as the first resource type.

[0028] Optionally, in any of the above aspects, the CQI value, SNR or SINR is obtained based on the CM on a channel measurement (channel measurement, CM) resource set and the IM on an interference measurement (interference measurement, IM) resource set, the CM resource set including RS resources configured by the network for channel measurement and RS resources determined by the UE for channel measurement, the IM resource set including resources configured by the network for interference measurement and RS resources determined by the UE for interference measurement, the resources configured by the network for interference measurement including one or more NZP CSI-RS resources for interference measurement and / or one or more CSI interference measurement (CSI interference measurement, CSI-IM) resources.

[0029] Optionally, in any of the above aspects, the efficiency requirement specifies an efficiency / CQI / SNR / SINR / rank threshold range or an efficiency / CQI / SNR / SINR / rank threshold or an ordering of efficiency / CQI / SNR / SINR.

[0030] According to another aspect of the present disclosure, a device for performing any of the above aspects is provided. The device comprises: a non-transitory memory storage including instructions; and one or more processors communicating with the memory, wherein the instructions, when executed by the one or more processors, cause the device to perform any of the above aspects.

[0031] According to another aspect of the present disclosure, a method is provided, the method comprising: a base station (BS) configuring one or more reference signal (RS) resources to a user equipment (UE); the BS sending RS to the UE on the one or more RS resources; and in response to sending the RS, the BS receiving a channel state information (CSI) report from the UE, wherein the CSI report is based on the RS sent to the UE on the one or more RS resources, the CSI report including a first RS resource among the one or more RS resources, and the CSI report indicating that the first RS resource is determined by the UE as a first resource type among multiple resource types.

[0032] Therefore, the UE can determine or select a type of RS resource from the RS resources configured by the base station, and report the determination or selection result to the base station, which is conducive to the base station performing link adaptation to communicate with the UE and other UEs.

[0033] Optionally, in any of the above aspects, the CSI report includes a first channel quality indicator (CQI) value associated with the first RS resource determined to be the first resource type.

[0034] Optionally, in any of the above aspects, the one or more RS resources include one or more ports, and each RS resource includes one or more ports.

[0035] Optionally, in any of the above aspects, the one or more RS resources are configured to the UE as a NZP CSI-RS resource setting, a NZP CSI-RS resource set or a NZP CSI-RS resource.

[0036] Optionally, in any of the above aspects, at least one port, one RS resource of the one or more RS resources, the NZP CSI-RS resource setting, the NZP CSI-RS resource set or the NZP CSI-RS resource is configured to the UE as a measurement resource determined by the UE.

[0037] Optionally, in any of the above aspects, the multiple resource types include resources for channel measurement, resources for interference measurement, zero power resources and silent resources.

[0038] Optionally, in any of the above aspects, the first resource type is a resource used for channel measurement, a resource used for interference measurement, a zero power resource or a silent resource.

[0039] Optionally, in any of the above aspects, the one or more RS resources are quasi co-located (QCLed) with the same channel state information reference signal (CSI-RS) for tracking or the same synchronization signal block (SSB).

[0040] Optionally, in any of the above aspects, a first subset of the one or more RS resources is quasi-co-located with a first CSI-RS or a first SSB used for tracking, and a second subset of the one or more RS resources is quasi-co-located with a second CSI-RS or a second SSB used for tracking.

[0041] Optionally, in any of the above aspects, the CSI report also includes a second RS resource among the one or more RS resources, and the second RS resource is determined by the UE as a second resource type among the multiple resource types.

[0042] Optionally, in any of the above aspects, the first resource type is the same as or different from the second resource type.

[0043] Optionally, in any of the above aspects, the first RS resource corresponds to a first reporting rule, the second RS resource corresponds to a second reporting rule different from the first reporting rule, and the first reporting rule and the second reporting rule specify requirements for the UE to determine whether the RS resource is one of the multiple resource types and report the determination result.

[0044] Optionally, in any of the above aspects, the first reporting rule and the second reporting rule specify different efficiency requirements, different signal-to-noise ratio (SNR) requirements, different signal-to-interference and noise ratio (SINR) requirements or different rank requirements.

[0045] Optionally, in any of the above aspects, the method further includes: the BS sending information of the first reporting rule and / or the second reporting rule to the UE.

[0046] According to another aspect of the present disclosure, a device for performing any of the above aspects is provided. The device comprises: a non-transitory memory storage including instructions; and one or more processors communicating with the memory, wherein the instructions, when executed by the one or more processors, cause the device to perform any of the above aspects.

[0047] According to another aspect of the present disclosure, a system for performing any of the above aspects is provided, wherein the system includes a user equipment (UE) and a base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which:

[0049] Figure 1 A schematic diagram of an exemplary wireless communication system is shown;

[0050] Figure 2 A schematic diagram of an exemplary communication system is shown, and a mathematical expression of a signal transmitted in the communication system is provided;

[0051] Figure 3 A schematic diagram showing an exemplary SS burst embedded with a PDSCH;

[0052] Figure 4 A schematic diagram showing exemplary PDCCH, PDSCH and DMRS multiplexing for more than one UE;

[0053] Figure 5A schematic diagram showing an exemplary non-zero power (NZP) CSI-RS multiplexed with a PDSCH for one or more UEs;

[0054] Figure 6 A schematic diagram showing an example of PDSCH / PUCCH multiplexing and PUCCH / PUSCH / DMRS multiplexing is shown;

[0055] Figure 7 A schematic diagram of an exemplary communication network is shown, the communication network including multiple TRPs serving multiple UEs using MU-MIMO;

[0056] Figure 8 A schematic diagram showing an exemplary interference measurement (IM) performed based on multiple NZP CSI-RS on an IM resource;

[0057] Fig. 9 A schematic diagram showing exemplary non-overlapping CSI-RS resources configured for channel and interference measurement is shown;

[0058] Fig.10 A schematic diagram showing an exemplary configuration of NZP CSI-RS resources;

[0059] Fig.11 A flow chart of an exemplary interference measurement method is shown;

[0060] Fig.12 A flowchart illustrating a conventional CSI measurement and reporting method and an exemplary CSI measurement and reporting method is shown;

[0061] Fig.13 A schematic diagram illustrating different virtualized ports is shown;

[0062] Fig.14 shows a CQI table as described in 3GPP TS;

[0063] Fig.15 A flow chart of an exemplary CSI measurement and reporting method is shown;

[0064] Fig.16 A flowchart showing another exemplary CSI measurement and reporting method is shown;

[0065] Fig.17 A flowchart showing another exemplary CSI measurement and reporting method is shown;

[0066] Fig.18 A block diagram of an exemplary processing system is shown;

[0067] Fig.19 A block diagram of an exemplary transceiver is shown.

[0068] Corresponding numerals and symbols in the different figures generally refer to corresponding parts unless otherwise indicated.The figures are drawn to clearly illustrate the relevant aspects of the embodiments and are not necessarily drawn to scale. DETAILED DESCRIPTION

[0069] Typically, a reference signal (RS) (e.g., channel state information-RS (CSI-RS)) may be sent to a UE in a measurement resource for measuring a downlink channel between the UE and a TRP. The network may specify to the UE which measurement resource is used for channel measurement (CM) and which measurement resource is used for interference measurement (IM). Since the impact of a service signal, an interference signal, or a silence signal on a UE measurement result (e.g., signal-to-interference-and-noise ratio (SINR), channel quality indication (CQI), or efficiency) may typically be estimated more accurately by the UE rather than by the network, it is desirable that the UE be able to determine or select whether the measurement resource is used for CM, IM, or silence.

[0070] In the disclosed embodiment, the UE is configured with RS resources for CSI measurement and reporting, but the network does not specify whether the configured RS resources are for CM, IM or silence. Instead, the UE determines whether the RS resources are for CM, IM or silence, that is, determines which resource type the RS resources are. The resource type can be a resource for CM, a resource for IM, a zero power resource or a silent resource. The UE measures the RS sent on the RS resource, determines the type of the RS resource and reports it according to the reporting rules. Details are provided below.

[0071] Figure 1 An exemplary wireless communication system 100 is shown. The communication system 100 includes a base station 110 having a coverage area 101. The base station 110 serves a plurality of user equipments (UEs), including a UE 120. Transmissions from the base station 110 to the UEs are called downlink (DL) transmissions and occur on a downlink channel (e.g., Figure 1 ), and the transmission from the UE to the base station 110 is called uplink (UL) transmission, which occurs on the uplink channel (such as Figure 1 1). The data carried on the uplink / downlink connection may include data transmitted between UEs 120 and data transmitted to / from a remote end (not shown) through the backhaul network 130. Services may be provided to multiple UEs by a service provider connected to the base station 110 through the backhaul network 130 (e.g., the Internet). The wireless communication system 100 may include multiple distributed access nodes 110.

[0072] There are several operating modes in a typical communication system. In the cellular operating mode, communications to and from multiple UEs pass through the base station 110, while in a device-to-device communication mode, such as a proximity service (ProSe) operating mode, UEs can communicate directly with each other. The term "base station" as used herein refers to any component (or collection of components) configured to provide wireless access to a network. A base station may also be generally referred to as a NodeB, an evolved NodeB (eNB), a next generation (NG) NodeB (NGNodeB, gNB), a master eNB (MeNB), a secondary eNB (SeNB), a master gNB (MgNB), a secondary gNB (SgNB), a network controller, a control node, an access node, an access point, a transmission point (TP), a transmission-reception point (TRP), a cell, a carrier, a macro cell, a femto cell, a micro cell, a relay station, a customer premises equipment (CPE), a network side, a network, etc. In the present disclosure, the terms "base station" and "access node" can be used interchangeably. The term "UE" used herein refers to any component (or a collection of components) that can establish a wireless connection with a base station. UE may also be generally referred to as a mobile station, a mobile device, a mobile phone, a terminal, a user terminal, a user, a subscriber, a site, a communication device, a CPE, a relay station, an integrated access and backhaul (IAB) relay station, etc. It should be noted that when relay technology is used (according to relay stations, micro cells, CPEs, etc.), especially when multi-hop relay technology is used, the boundary between the controller and the node controlled by the controller may become blurred, and dual nodes (such as controllers or nodes controlled by the controller) are deployed, wherein the first node that provides configuration information or control information to the second node is regarded as the controller. Similarly, the concepts of UL transmission and DL transmission can also be expanded.

[0073] A cell may include one or more bandwidth parts (BWP) of UL or DL ​​allocated to a UE. Each BWP may have its own BWP-specific system parameters (numerology) and configuration, such as the bandwidth of the BWP. It should be noted that for a UE, not all BWPs need to be activated at the same time. A cell may correspond to one carrier, and in some cases, may correspond to multiple carriers. Generally speaking, a cell (e.g., a primary cell (PCell) or a secondary cell (SCell)) is a component carrier (e.g., a primary component carrier (PCC) or a secondary component carrier (SCC)). For some cells, each cell may include multiple UL carriers, a carrier with an associated DL link is called a UL carrier or a non-supplementary UL (non-SUL) (or UL only) carrier, and other carriers without associated DL links are called supplementary UL (SUL) carriers. A cell or carrier may be configured with a time slot or subframe format including DL symbols and UL symbols, and the cell or carrier is considered to operate in time division duplex (TDD) mode. Generally speaking, for unpaired spectrum, the cell or carrier is in TDD mode, and for paired spectrum, the cell or carrier is in frequency division duplex (FDD) mode. A transmission time interval (TTI) typically corresponds to a subframe (in LTE) or a time slot (in NR). An access node may provide wireless access according to one or more wireless communication protocols such as Long Term Evolution (LTE), Advanced LTE (LTE-A), 5G, 5G LTE, 5G NR, future 5G NR versions, 6G, High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For simplicity, Figure 1 Only one access point and two UEs are shown, but it can be understood that the communication system can use multiple access nodes (or base stations) that can communicate with multiple UEs.

[0074] Typically, the channel between two devices is estimated by having the first device send a known signal to the second device on one or more known time resources or frequency resources. The received signal on the second device side can be expressed as:

[0075] y = Hs + n (1)

[0076] Where y is the received signal on the second device side, s is a known signal (which can be a reference signal, a pilot or a pilot signal), H is the channel model or channel impulse response (CIR), and n is the noise (and interference to some communication channels). In a MIMO system, there are N tx transmit antennas and N rx receive antennas, H is N tx ×N rx Since s is known to the second device, the second device can determine or estimate H according to y. Accordingly, the base station can send a reference signal s to the UE, and then the UE can estimate the channel H and feed back CSI information to the base station according to the estimated H.

[0077] Figure 2 An exemplary communication system 200 is shown, and a mathematical representation of signals transmitted in the communication system is provided. The communication system 200 includes an access node 205 communicating with a UE 210. Figure 2 As shown, access node 205 uses transmit filter v and UE 210 uses receive filter w. Both access node 205 and UE 210 use linear precoding or combination. Assume H is N in a multiple-input multiple-output (MIMO) system. rx ×N tx Matrix, that is, there is N tx transmit antennas and N rx The size is N tx The transmit filter v of size N × Ns enables the transmitter to precode or beamform the transmit signal, where Ns is the number of layers, number of transmission ports, number of (transmission virtual or physical) antenna ports, number of streams, number of symbols, number of pilots, number of messages, amount of data, or number of known sequences transmitted. The receive filter w in a multi-antenna system is of size N rx ×Ns, the receiving filter w represents the usual H The above description is about the transmission from access node 205 to UE 210, that is, DL transmission. This transmission can also occur in the opposite direction (uplink transmission), in which case the channel matrix becomes H in the case of TDD H (Among them, H H is the Hermitian matrix of the channel model H), w can be regarded as a transmit filter, and v can be regarded as a receive filter. The w used for transmission and the w used for reception can be the same or different, and the same is true for v.

[0078] The DL (or forward) channel 215 between the access node 205 and the UE 210 has a channel model or response H, and the UL (or backward or reverse) channel 220 between the UE 210 and the access node 205 has a channel model or response H. H (Another convention is that the uplink UL is represented by H T , which is the transposed model of the channel model H. )Although Figure 2 Only one access node and one UE are shown, but the communication system 200 is not limited to this case. The access node can serve multiple UEs on different time-frequency resources (e.g., in a frequency division multiplexing-time division multiplexing (FDM-TDM) communication system, as in a typical cellular system) or on the same time-frequency resources (e.g., in a multi-user MIMO (MU-MIMO) communication system, where multiple UEs are paired together and transmissions to each UE are precoded separately). There is intra-cell interference between paired UEs, also known as MU (multi-user, MU) interference (MU interference, MUI).

[0079] There may also be multiple access nodes in the network, some of which may collaboratively serve UE 210 through joint transmission (e.g., coherent joint transmission, incoherent joint transmission, coordinated multi-point transmission, etc.), dynamic pointswitching / selection (DPS), etc. Some other access nodes may not serve UE 210, and transmissions from these access points to their own UEs may cause inter-cell interference to UE 210. The exemplary scenario considered herein is a scenario of multiple access nodes and multiple UEs, wherein these access points collaboratively serve UEs, and the technology used is MU-MIMO.

[0080] Multiple physical layer channels and signals of one or more UEs can be multiplexed. These physical layer channels and signals include primary synchronization signal / secondary synchronization signal (PSS / SSS), physical broadcast channel (PBCH) and its associated demodulation reference signal (DMRS), physical downlink shared channel (PDSCH) and its associated DMRS and PT-RS, physical downlink control channel (PDCCH) and its associated DMRS and channel state information-reference signal (CSI-RS), and also include channels and signals for CSI acquisition, beam management and tracking (also called tracking reference signal (TRS)). Figure 3 A schematic diagram 300 illustrating an SS burst is shown, wherein the SS burst is embedded with, ie, multiplexed with, the surrounding SS burst PDSCH. Figure 4 A schematic diagram 400 showing PDCCH, PDSCH and DMRS multiplexed for more than one UE is shown. As shown, PDCCH 402 includes scheduling information for PDSCH1 404 of UE1 and PDSCH2 406 of UE2. Figure 4 Also shown are DMRS 412 to 416 for each of the PDCCH 402 , PDSCH1 404 , and PDSCH2 406 . Figure 5 A schematic diagram 500 is shown showing an example of a non-zero power (NZP) CSI-RS for channel estimation, interference measurement, etc., where the NZP CSI-RS is multiplexed with the PDSCH for one or more UEs. The NZP CSI-RS is sometimes also referred to as just CSI-RS. However, LTE and NR also support zero-power (ZP) CSI-RS.

[0081] These downlink channels and signals may be transmitted using beamforming in the high frequency band. The beams used for these channels and signals may be semi-statically configured to, for example, the PDCCH of each control resource set (CORESET) by a quasi-co-location (D QCL) of a type spatial receive filter in a transmission configuration indication (TCI) state, or dynamically indicated in downlink control information (DCI) (e.g., in the case of PDSCH) via TCI. Beam scanning may be used to scan a narrower set of beams in a wider angular direction for beam management, as in the case of SS / PBCH blocks or beam-managed CSI-RS resources. Obviously, multiple beams of various spatial directions, beamforming gains, and beam widths / shapes may be multiplexed.

[0082] If the TRP multiplexes the served UE in TDM mode, uplink channels and signals can also be multiplexed, including the physical uplink shared channel (PUSCH) and its associated DMRS and PT-RS, the physical uplink control channel (PUCCH) and its associated DMRS, the physical random access channel (PRACH) signal and the sounding reference signal (SRS). Figure 6 A schematic diagram 600 showing examples of PDSCH / PUCCH multiplexing and PUCCH / PUSCH / DMRS multiplexing is shown.

[0083] Figure 7 A schematic diagram of another exemplary communication network 700 is shown, which includes multiple TRPs that use MU-MIMO to serve multiple UEs. The communication network 700 includes TRPs 702, 704, and 706, each of which serves UEs 712 and 714. Figure 7 For illustrative purposes, the communication network 700 is shown to include 3 TRPs and 2 UEs, but the communication network 700 may include more or fewer TRPs or UEs than shown. The downlink signal y received at the UE 712 side may be expressed as:

[0084] y=H0S0 + H1 S1 + H2 S2 + I0 (2)

[0085] Among them, S0, S1 and S2 are signals sent by TRPs 702, 704 and 706 respectively, and H0, H1 and H2 represent channels between TRP 702 and UE 712, between TRP 704 and UE 712, and between TRP 706 and UE 712 respectively. I0 represents noise plus interference generated externally to the TRP / UE shown.

[0086] Each TRP in TRPs 702, 704, and 706 and each UE in UEs 712 and 714 may form a TRP-UE pair. In each TRP-UE pair, the relationship between the TRP and the UE may be a service relationship, an interference relationship, and / or a silent relationship. For example, when TRP 702 serves UE 712, the relationship between TRP 702 and UE 712 is a service relationship. A TRP that does not serve UE 712 may cause downlink interference to UE 712. For example, a downlink transmission from a non-serving TRP 704 (e.g., from TRP 704 to UE 714) may interfere with a transmission from TRP 702 by causing downlink interference to UE 712. In this case, TRP 704 is called an interference source for UE 712, and the relationship between TRP 704 and UE 712 is an interference relationship. That is, the H1 S1 portion in the above equation (2) becomes interference to UE 712. It should be noted that external interference 722 may also cause downlink interference to UE 712. External interference 722 is part of I0 in equation (2), for example, interference caused by a TRP not shown in the figure but sent to other UEs, or interference caused by any other transmission / sending performed by any source on the same time / frequency resources. Similarly, TRP 706 may also be a source of interference for UE 712. Optionally, when TRP 706 is silent (i.e., there is no communication) on the time-frequency resources used for UE 712 to communicate with TRP 702, the relationship between TRP 706 and UE 712 may be a silent (or blanking or non-service non-interference) relationship.

[0087] Typically, a reference signal (RS) (e.g., CSI-RS) may be sent to a UE, such as UE 712, in a measurement resource for measuring a downlink channel between the UE and a TRP, e.g., Figure 2Channel model H shown. The UE may be configured with information indicating / specifying which measurement resource is used for channel measurement (CM) and which measurement resource is used for interference measurement (IM). In one example, the measurement resources may include one or more RS resources and one or more channel state information (CSI) interference measurement (CSI-IM) resources. Measurement resources configured for CM are called channel measurement resources (CMR). Measurement resources configured for IM are called interference measurement resources (IMR), such as CSI-IM. The UE performs CM and IM accordingly according to the measurement resources and generates a channel state information (CSI) report, and the network performs LA on the UE and communicates with these UEs according to the CSI report. NZP CSI-RS resources can be configured for CM and IM, while ZP CSI-RS resources or CSI interference measurement (CSI interference measurement, CSI-IM) resources can be configured for IM. Each NZP CSI-RS resource includes multiple ports on some resource units. Each ZP CSI-RS resource or CSI-IM typically includes 4 resource units. One or more such ZP CSI-RS resources and / or NZP CSI-RS resources may be configured as a CSI-RS resource set or a CSI-IM resource set. One or more such resource sets may be configured as a CSI resource setting (also referred to as a CSI resource configuration).

[0088] On the NZP CSI-RS resources for CM, the UE can assume that the signal or signals it expects are being sent. That is, the NZP CSI-RS that the UE wants to use for CM is sent on the NZP CSI-RS resources according to the network configuration / indication, which includes the scrambling code identity (ID), layer / port, code division multiplexing (CDM), P c ('powerControlOffset' or the equivalent isotropic radiated power (EIRP) ratio between the NZP layer energy on a resource element (RE) and the PDSCH energy on the RE), etc.

[0089] On the NZP CSI-RS for IM, the serving cell may be silent (in this case, the serving cell configures / sends the ZP CSI-RS to the served UE), or it may not be silent, while the interference source (which may be the same cell as the serving cell or a different cell from the serving cell) transmits on one of the NZP CSI-RS (in this case, the cell configures / sends the NZP CSI-RS) but is silent on the other NZP CSI-RS (in this case, the cell configures / sends the ZP CSI-RS). In this case, the UE assumes that no serving signal is transmitted on the NZP CSI-RS for IM, or if the NZP CSI-RS for IM overlaps with the CMR, the serving signal is removed and one or more interference signals are transmitted on the NZP CSI-RS for IM. If the NZP CSI-RS interference signal information (e.g., scrambling code ID, layer / port, CDM, P c ) is notified to the UE, such information may also be assumed by the UE (e.g., assumptions similar to those for CM NZP CSI-RS signals, but applicable to IM). In some embodiments, the UE makes no other assumptions about the interfering signal. In some embodiments, if none of the above information is not signaled to the UE, the UE makes no assumptions about the IM.

[0090] Figure 8 An example 800 of performing IM based on multiple NZP CSI-RS on IMRs that do not overlap CMRs provided by some embodiments of the present disclosure is shown. In this example, two NZP CSI-RSs for IM are shown (the first corresponding to row 802a and the second corresponding to row 802b). Figure 8 Four columns 804 (column 804a, column 804b, column 804c, and column 804d) are shown from the perspective of a serving cell 806, interferer 1 808, interferer 2 810, and a plurality of far-end interferers 812.

[0091] Fig. 9 An exemplary use case 900 of configuring non-overlapping CSI-RS resources for channel and interference measurement provided by some embodiments of the present disclosure is shown. From the perspective of UE0, NZP CSI-RS resource #0 is used for CM, while NZP CSI-RS resources #1 and #2 are used for IM. When the base station simulates possible MU signals on NZP CSI-RS resources #1 and #2, UE0 can detect MU interference by measuring interference on these two IM resources.

[0092] Fig.10An exemplary configuration 1000 of an NZP CSI-RS resource set provided by some embodiments of the present disclosure is shown. Taking non-overlapping CSI-RS resources as an example, in cell 0, NZP CSI-RS resources #0, #1, and #2 are respectively allocated to UE0 (as shown in 1002), UE1 (as shown in 1004), and UE2 (as shown in 1006) for channel measurement. For each UE, except for the CSI-RS resources used for CM, the other two CSI-RS resources are IMRs.

[0093] Interference measurement and mitigation has always been a difficult problem in wireless communications. In most cases, interference is dynamic, unpredictable, and uncontrollable, and can often be limited by the causal relationship between measurement-reporting-scheduling of communications. Figure 7 In the example shown, the downlink interference caused by TRP 704 to UE 712 may only occur when TRP 704 performs downlink transmission to the UE served by TRP 704. The downlink transmission of TRP 704 is performed on time-frequency resources, which depends on the service load / burst service of the UE served by TRP 704 and the TRP scheduling result. Since the burst service and scheduling results are usually random and may vary from TTI to TTI or from PRB to PRB, the downlink interference caused by TRP 704 is usually bursty and random. The total interference (sum) of a large number of interference sources (especially non-dominant interference sources) may not look so bursty, but if there are a small number of dominant interference sources, the interference appears to be "on / off" interference, for example, the interference is large in one TTI but disappears in the next TTI. It should be noted that the wireless channel may fade over time, but the channel is relatively stable in both small (e.g., milliseconds, within the duration of block fading) time scales and long (e.g., seconds and longer) time scales. In contrast, interference (especially on / off interference) is more dynamic and variable than the channel. Tracking and estimating the channel with reasonable accuracy may be feasible, but tracking interference in non-cooperative networks is very difficult. It is desirable to develop interference measurement and mitigation mechanisms with improved performance, which is conducive to achieving good link adaptation (LA) performance.

[0094] Probing has been used to circumvent the predictability problem of interference measurements by adding additional pre-scheduling steps. In the example of probing, the selected UE can be configured to measure on the probing resources (e.g., CMR and / or IMR) of the signal and / or interference, and report the channel quality indication (CQI) / radio resource management (RRM) / radio link management (RLM) measurements. Therefore, the network can predict the system impact and / or performance based on the measurements on the small-scale resources. The measurements related to the prediction can be performed in parallel with the normal operation of the network without affecting the normal operation of the network. The probing step is performed after the network (pre) scheduling and before the PDSCH transmission. In some TDD systems, the uplink SRS can be sent after the network (pre) scheduling and before the PDSCH transmission, instead of relying on the DL CMR / IMR for probing, where the UL SRS is sent according to the scheduling result, that is, the same frequency domain resource allocation and port / layer are used for PDSCH transmission. UL SRS-based probing is a variant of BiT (bi-directional training). Due to the introduction of the detection operation, the detection generates additional delay.

[0095] However, probing techniques may not be applicable to ultra reliable low latency communication (URLLC), which typically requires high reliability (e.g., 10^–5 BLER) and low latency (e.g., a few milliseconds). The low latency requirement of URLLC services may not provide enough time for probing. Conventional techniques such as outer loop link adaptation (OLLA), DL probing, or BiT / UL probing are not applicable to URLLC due to its high reliability and low latency requirements. Therefore, interference measurement and suppression as well as link adaptation are more difficult for URLLC.

[0096] Interference measurement, especially for URLLC, has been discussed and proposed. A passive approach is to provide the network with more information about interference, such as interference statistics, so that the network can perform interference measurement and suppression. An active approach is to coordinate or control interference, thereby reducing and eliminating the uncertainty of interference in the scheduling process. This is feasible because one or more service channels and one or more dominant interference channels can be tracked in a cooperative network.

[0097] The embodiments of the present disclosure provide an interference measurement method, which generally follows the above-mentioned active method. In some embodiments, the network coordinates multiple possible signal interference combinations "offline" between the dominant interference sources, and sends RS on RS resources in all CSI measurement resources of the UE. The UE performs channel state information (CSI) measurement on the measurement resources and performs CSI reporting of the CSI measurement. The UE also determines which RS resources are used for CM, IM and / or silence (blanking, non-service non-interference) according to certain standards / requirements (such as threshold signal-to-interference-plus-noise ratio (SINR)), and reports the determination result in the CSI report. When URLLC service arrives, the network selects resources for link adaptation (LA) and downlink transmission based on the CSI report.

[0098] Fig.11 A flowchart of an exemplary method for interference measurement is shown. The base station 1104 configures the RS resource set (e.g., in the measurement resources of the UE 1102) to the UE for CSI measurement and reporting (step 1110). However, in this example, the base station 1104 does not specify or indicate whether each resource in the RS resource set is used for CM, IM, or silence (or does not specify which resource in the RS resource set is used for CM, which resource is used for IM, and which resource is a silence resource). This will be determined / selected by the UE 1102. The RS resource set may include periodic (P) or semi-persistent (SP) RS resources. The RS resource set may include CSI-RS resources. The RS resource set may include multiple ports, and each RS resource may include one or more ports. The RS resource set may be configured according to the NZP CSI-RS resource setting, the NZP CSI-RS resource set, or the NZP CSI-RS resource (that is, the configuration granularity is the resource). The RS resource set may be quasi co-located (QCLed) with the same channel state information reference signal (CSI-RS) for tracking or the same synchronization signal block (SSB). In some embodiments, a first subset of the RS resource set is quasi co-located with a first CSI-RS or a first SSB for tracking (which may implicitly indicate that the first subset is from a first TRP), and a second subset of the RS resource set is quasi co-located with a second CSI-RS or a second SSB for tracking (which may implicitly indicate that the second subset is from a second TRP). The base station 1104 may configure at least one port in the RS resource set, at least one RS resource in the RS resource set, an NZP CSI-RS resource setting, an NZP CSI-RS resource set, or an NZP CSI-RS resource to be configured to the UE as a measurement resource determined by the UE. That is, the UE 1102 is configured to determine the type of measurement resource determined by the UE, for example, whether the measurement resource determined by the UE is a resource for CM or IM, or a silent resource.

[0099] In some embodiments, multiple types (or multiple categories, multiple classes, multiple groups) of resources may be defined. Multiple resource types may include a type of RS resource for CM (i.e., CMR), a type of RS resource for IM (i.e., IMR), and a type of zero-power (ZP) resource or silent resource (i.e., silent). Other resource types may also be included depending on the specific application. Resource types may be considered as categories, such as {CMR, IMR, silent}, {CMR, IMR}, or {CMR, silent}, and so on. UE 1102 may be configured to determine whether RS ​​resources in an RS resource set are classified (or grouped, categorized, or selected) as any of a plurality of resource types (i.e., any of the above categories), and report the determination result to base station 1104. In other words, UE 1002 selects an RS resource from the RS resources as a specific resource type, such as a resource for CM, IM, or silence.

[0100] The base station 1104 sends an RS to the UE 1102 on the resource set (step 1112). The RS may include a (NZP) CSI-RS, a synchronization signal (SS), a tracking RS (TRS) (CSI-RS for tracking), and / or other suitable RS. The UE 1102 receives the RS sent by the base station 1104 and performs CSI measurement on the RS (step 1114). The UE 1102 may perform CSI measurement and generate a reporting quantity generally known in the art.

[0101] UE 1102 may determine the type of an RS resource in the RS resource set based on measurements on the resource (step 1116). That is, UE 1102 determines whether the RS resource is used for CM or IM or silence based on measurements. RS resources determined as CM resources are assumed by the UE to be CMRs, and RSs sent on RS resources may be assumed by the UE to be service signals (referred to as "S"), for example, each port of the CMR corresponds to a service signal transmission layer. RS resources determined as IM resources are assumed by the UE to be NZP-IMRs, and RSs sent on RS resources may be assumed by the UE to be interference signals (referred to as "I"), for example, each port of the NZP-IMR corresponds to an interference signal transmission layer. RS resources may be determined to be silence resources or ZP resources (in one embodiment, when UE 1102 does not determine whether an RS resource is a CMR or an IMR, the RS resource defaults to a silence / ZP resource), and RSs sent on RS resources may be referred to as silence signals (referred to as "M"), and the UE assumes that it is neither a service signal nor an interference signal. Since the RS resource carries the corresponding RS, the category {CMR, IMR, silent} can also be represented by the corresponding RS it carries, that is, {S, I, M}. In the following, {CMR, IMR, silent} and {S, I, M} can be used interchangeably to describe the type / category / classification / grouping of RS resources. In the following, the UE determines / selects the RS resource as a type / category / classification / grouping of resources, which can also be referred to as the UE classifying / grouping / classifying the RS resource as a type / category / classification / grouping of resources. Such RS resources can be referred to as classified / classified / grouped / selected RS resources. Unless otherwise specified, the terms "type", "category", "grouping" and "classification" can be used interchangeably to describe the determination of RS resources as a resource type. The following embodiments are described using 3 categories {CMR, IMR, silent} or {S, I, M} as examples. Those of ordinary skill in the art will recognize that there may be less than or more than 3 categories.

[0102] UE 1102 may determine the type of each RS resource in an RS resource set or each RS resource in a subset of an RS resource set. In one example, UE 1102 may determine some RS resources in an RS resource set as CMRs, some other RS ​​resources as IMRs, and some other RS ​​resources as silent resources or ZP resources. In another example, UE 1102 may determine that none of the RS resources are CMRs, IMRs, or silent resources. In this way, after determining the type of each RS resource in an RS resource set, that is, after classifying the RS resource set into categories {CMR, IMR, silent} or {S, I, M}, UE 1102 may obtain a combination of RS resources classified into categories {CMR, IMR, silent}, wherein each category includes 0, 1, or more RS resources classified into corresponding categories. In the following, for simplicity of explanation, this combination of classified RS resources is referred to as a "combination" or a "SIM combination". Forming or obtaining a combination may include finding 0, 1, or more RS resources from the configured RS resources for each of the above categories. For example, if the RS resource set includes 6 RS resources (R1 to R6), a combination can be formed, which is expressed as {CMR (R1, R2, R3), IMR (R5), silent (R4, R6)} (or {S (R1, R2, R3), I (R5), M (R4, R6)}). This combination indicates that RS resources R1, R2, R3 are determined as CMR, RS resource R5 is determined as IMR, and RS resources R4 and R6 are determined as silent resources. UE 1102 can form different combinations of these 6 resources classified into 3 categories. Taking 6 RS resources as an example, UE1102 can obtain the first combination {CMR (R1, R2, R3), IMR (R5), silence (R4, R6)}, the second combination {CMR (R1, R2, R3, R6), IMR (R5), silence (R4)} and the third combination {CMR (R1, R2), IMR (R3, R5), silence (R4, R6)}. It cannot be determined that the same resource includes more than one type of {S, I, M}. In some embodiments, when forming a combination, it is required to have a category CMR or S, that is, UE 1102 needs to select at least one RS as a CMR. Category CMR needs to include at least one classified resource, and at least one classified resource corresponds to the situation where the UE needs to have a service signal for transmission but has not yet configured a service signal (CMR). In some embodiments, category IMR / I or silence / M may not exist. That is, UE 1102 may not need to select any RS resource as an IMR or silence resource according to the network configuration. Category IMR or Silence may be empty.

[0103] In some embodiments, the same UE 1102 may find and form multiple combinations on the same RS resource set, but the UE may not report all formed combinations. UE 1102 may choose to report one or more of the multiple combinations. Whether to report one or more of the multiple combinations may be determined according to a reporting rule configured for UE 1102. For example, UE 1102 may select a combination that satisfies a condition configured in the reporting rule. Examples of conditions may be an efficiency range (e.g., >5, [3.5, 5), etc.), an SINR range (15dB to 20dB), a CQI index range (e.g., Fig.14 The following description provides detailed information about the reporting rules. RS resources and reporting rules may be associated with a CSI reporting configuration (also referred to as a CSI reporting configuration, a CSI reporting setting, or a CSI reporting setting).

[0104] UE 1102 may generate a CSI report based on one or more combinations of CSI measurements and acquisitions (step 1118), and send the CSI report to base station 1104 (step 1120). UE 1102 may generate one or more CSI report quantities, such as channel quality indication (CQI), rank indicator (RI), channel resource indicator (CRI), etc., and report these quantities in the CSI report. In addition to these quantities, the CSI report may also include one or more combinations, such as one or more combinations of the three combinations {CMR (R1, R2, R3), IMR (R5), silence (R4, R6)}, {CMR (R1, R2, R3, R6), IMR (R5), silence (R4)} and {CMR (R1, R2), IMR (R3, R5), silence (R4, R6)}, as described above. Each combination may correspond to a different value of the CSI report quantity. UE 1102 may report one or more CSI reports, each CSI report may include (or be associated with) a combination of classified RS resources. Each CSI report may be reported according to a CQI table as described in the standard. Optionally, different CQI tables may be used. As described in the present application, RS resources reserved for UE-determined categories may be beamformed / precoded, so no PMI is associated with these RS resources. In other words, the PMI may not be part of the CSI report for RS resources of a category determined by the UE. When more than one NZP port is determined as a CMR (i.e., a service signal), it may become a multi-rank transmission, and a CQI value may be reported for rank 1 to 4 transmissions (in NR, ranks 1 to 4 correspond to one codeword, so one CQI / MCS is associated with rank 1 to 4 transmissions). Higher ranks may also support 2 codewords, and therefore support 2 CQI / MCS values, but this is unlikely in practice. Note that the CMR port / resource may be quasi-co-located with the same TRS / SSB from the same TRP, or quasi-co-located with different TRS / SSBs from multiple TRPs. If multiple TRPs are tightly synchronized, connected by fast backhaul, and are not far from each other, then one codeword / CQI / MCS can be provided for layers 1 to 4. However, at least when the above conditions are not fully met, a CMR port / resource may be associated with 2 CQI values ​​(usually different) during UE reporting, and 2 MCS levels (usually different, but possibly the same) may come from multiple TRP transmissions (the codewords may be the same or different). That is, for example, if the UE has determined and / or configured port 1 and port 2 in the CMR, where port 1 is quasi-co-located with TRS1 and port 2 is quasi-co-located with TRS2, then 2 CQI values ​​may be reported for port 1 and port 2, respectively.For each subset of CMR ports / resources determined by the UE and / or configured to the UE that are quasi-co-located with the same TRS / SSB, one CQI value is reported for up to 4 transmissions. In general, the network can specify whether one or two CQIs need to be reported for non-quasi-co-located CMR ports / resources as part of the reporting rules. For example, if the reporting rules only define one CQI / SINR range (e.g., 15dB to 20dB), then one CQI value is reported; if the reporting rules define more than one range (e.g., one range is 15dB to 20dB and the other range is 10dB to 15dB) or a range of SINR sums (e.g., SINR sums are within 23dB to 28dB), then two CQI values ​​are reported. The reporting rules (or standards) may also restrict the UE from selecting CMR ports / resources that are quasi-co-located with the same TRS / SSB, that is, one or more service signals may come from only one TRP (e.g., to support dynamic point selection (DPS)). In this case, the UE does not select ports / resources that are quasi-co-located with different TRS / SSBs, and only reports 1 CQI value for up to 4 layers.

[0105] The UE 1102 may be configured with a reporting configuration that specifies reporting content (e.g., reporting quantity, one or more combinations, CQI, RI, etc.) to the UE 1102 periodically or irregularly based on the reporting content (e.g., configured resources / resource sets / resource settings, reporting time). CQI and RI and other quantities may have different reporting periods.

[0106] In some embodiments, a first RS resource reported according to a reporting setting of UE 1102 may be associated with a first plurality of types (e.g., {CMR, silence}). That is, when determining the type of the first RS resource, 2 categories {CMR, silence} are considered. A first RS resource classified as CMR may correspond to one or more beams directed to UE 1102, and thus, the service / silence decision made for the first RS resource and other RS ​​resources relative to the first plurality of types indicates a service beam / layer selection decision. Optionally, a second RS resource reported according to the same reporting setting may be associated with a second plurality of types, and the second plurality of types (e.g., {IMR, silence}) may be the same or different from the first group of types. A second RS resource classified as IM may correspond to one or more beams not directed to UE 1102, and thus, the interference / silence decision made for the second RS resource and other RS ​​resources relative to the second plurality of types indicates an interference beam / layer selection decision or a layer silence decision. Optionally, a third RS resource associated with a third plurality of types (e.g., {CMR, IMR, silence}) may also exist, and so on.

[0107] Base station 1104 can perform coordination and LA based on the CSI report. For example, base station 1104 can select a reported combination and a CSI report amount corresponding to the combination from the CSI report when the service arrives, and perform LA on the service. In one example, when a URLLC burst service with many bits and very strict delay requirements (e.g., 3ms) arrives, base station 1104 can determine that this burst service requires an efficiency of >5, which corresponds to, for example, a combination of {CMR (R1, R2, R3, R6), IMR (R5), silence (R4)} reported by the UE for an efficiency of >5. Base station 1104 can select a CQI value corresponding to an efficiency of >5, determine the corresponding modulation coding scheme (MCS) and the corresponding SIM combination. Base station 1104 may then send data bursts (e.g., PDSCH) with the determined MCS on ports associated with R1, R2, R3, and R6 (the beamformers of these ports are the same as in the NZP CSI-RS resources (represented in the DMRS of the PDSCH)), coordinate with some other base stations (if necessary) to achieve interfering transmissions associated with port / beamformer R5, and coordinate with some other base stations (if necessary) to silence transmissions associated with port / beamformer R4. Since the network sends interfering / silent PDSCH transmissions based on the UE's measurements / reports when the efficiency is >5, the UE will achieve an efficiency >5 in the PDSCH that matches the MCS, as expected by the network. This ensures (with sufficiently high probability) that the URLLC burst service is successfully transmitted as needed. In another example, when a URLLC burst service with few bits and not very strict delay requirements (e.g., 15ms) arrives, the base station 1104 can determine that the efficiency range of 1.5 to 2 is sufficient for this burst service, which corresponds to, for example, the combination reported by the UE {CMR (R1), IMR (R2, R3, R5, R6), silence (R4)}. The base station 1104 can select a CQI value corresponding to an efficiency of 1.5 to 2, and determine the corresponding MCS and the corresponding SIM combination. The network then performs transmission / interference / silence according to this combination, which can ensure (with a sufficiently high probability) successful transmission of the burst service and leave more time-frequency resources for other UEs / base stations than in the first example. In general, the stricter the URLLC requirements, the more time-frequency resources are consumed by the burst service, and the fewer resources are left for other transmissions. The exemplary coordination scheme enables the network to successfully transmit burst services while minimizing the impact on other UEs / base stations when using resources. If the most favorable combination (e.g., all ports / resources serve UEs) still cannot meet the URLLC requirements, it means that the URLLC requirements exceed the network capacity.

[0108] Fig.12A schematic diagram 1200 of a conventional CSI measurement and reporting method and an exemplary CSI measurement and reporting method as described above is shown. In this example, the RS resources used for CSI measurement and reporting include 6 ports: port 1 to port 6. Typically, the network specifies to the UE which of the RS resources is used for CM and which is used for IM. For example, as shown in the figure, the network may specify that ports 1 to 3 are (NZP) CMRs (step 1202) and ports 4 to 6 are (NZP) IMRs (step 1204). The UE may also be configured with one or more IMRs (typically one or more CSI-IM resources) to measure external interference and noise (step 1206). With this designation, the UE can perform CSI measurements and CSI reporting. The UE cannot flexibly select its service / interference / silence signal, and generates / reports 1 CQI (and associated RI, etc., if any) at a time.

[0109] According to an embodiment of the present disclosure, the UE is configured with RS resources for CSI measurement and reporting, but the network does not specify the type of RS resources configured. That is, the network does not specify which of the RS resources is used for CM and which of the RS resources is used for IM. As shown in the figure, the UE is configured with ports 1 to 6 in an NZP resource pool (which can be configured as a resource set or a resource setting) for CSI measurement and reporting (step 1212). The UE can also be configured with CSI-IM resources for measuring external interference and noise (step 1214). The UE does not know whether each of the configured ports 1 to 6 is used for CM or IM. Then, the UE selects one or more ports from port 1 to port 6 as CMRs, and selects one or more other ports from port 1 to port 6 as IMRs. Based on the UE's selection and the measured external interference and noise, the UE can perform CSI measurement, CSI derivation, and CSI reporting. Exemplary CSI measurements and reports can be performed before the UE starts URLLC communication with the base station or when the UE is not communicating with the base station via URLLC, usually in a periodic or semi-static manner through periodic / semi-static CSI-RS resources and / or periodic / semi-static reporting. Therefore, CSI measurements and reports are performed "offline". In this way, CSI measurements and reports do not affect the URLLC communication of the UE, while providing useful information for the network to allocate communication resources.

[0110] It is beneficial that the UE itself is able to determine / select CMR, IMR or silent resources for downlink transmission instead of being configured by the network. The impact of service signals, interference signals or silent signals on the resulting SINR / CQI / efficiency can usually be estimated more accurately by the UE through its receiver rather than by the network, and SINR / CQI / efficiency accuracy is particularly important for URLLC that requires low latency and high reliability. However, if there is no restriction, the UE can select and report all available resources for its service signal, which is natural because the UE may get the highest SINR / CQI / efficiency. For example, the UE can select all 6 resources R1 to R6 in the previous example as its CMR. If each UE selects and reports all RS resources as CMRs, the significance of the UE selecting / determining RS resources may be reduced because the network rarely allocates all resources to one UE. Therefore, although the UE can find many different combinations, it is desirable that there are rules to limit the UE to select and report its combinations.

[0111] In some embodiments, a rule (or a reporting rule that is called a reporting rule that limits the reporting UE to select a SIM combination) may be defined to specify a requirement (or condition), and the UE determines whether the RS resource is one of a plurality of resource types (e.g., selects a combination) based on the requirement, and reports the determination result (the selected combination). The combination that meets the requirement will be selected / determined and reported by the UE. In some embodiments, the above requirements may include efficiency requirements, CQI requirements, signal-to-noise ratio (SNR) requirements, signal-to-interference-plus-noise ratio (SINR) requirements, rank requirements, or a combination thereof. Other requirements used by the UE to determine the type of RS resources configured also apply. Typically, a reporting rule may require the UE to report at least one CQI (and the associated reporting amount). If more than one reporting rule is configured to the UE as a reporting setting, the UE may need to report at least one CQI (and the associated reporting amount) for each reporting rule.

[0112] In some embodiments, each requirement may specify one or more thresholds, or a threshold range. For example, a CQI requirement may specify a CQI threshold (e.g., 20 dB) or a CQI threshold range (e.g., 25 dB to 30 dB) (note that although CQI in the standard is represented by a CQI index, CQI is also typically loosely represented as a form of SINR, expressed in dB). An SNR / SINR requirement may specify an SNR / SINR threshold or an SNR / SINR threshold range. A rank requirement may specify a rank threshold (e.g., 2) or a rank threshold range (e.g., 1 to 3). An efficiency requirement may specify one or more efficiency thresholds, or an efficiency threshold range.

[0113] The UE may determine a value corresponding to the requirement, such as a CQI value, an SNR / SINR value, a rank value, or an efficiency value, and determine whether the corresponding requirement is met by determining whether the value satisfies (e.g., is greater than or less than and / or equal to) a threshold specified in the requirement or is within a threshold range of the corresponding requirement. The value (e.g., a CQI value, an SNR / SINR value, or a rank value) may be determined based on a combination of classified RS resources. If the corresponding requirement is met, the UE determines / selects and reports a combination of classified RS resources. If the corresponding requirement is not met, the above combination is not selected or reported.

[0114] In an example where the UE is configured with 3 RS resources (e.g., port 1 to port 3) for CSI measurement and reporting and is configured with CQI requirements, the UE may attempt to find various possible combinations for classifying the 3 ports for CM, IM, and silence. Table 1 shows 7 possible combinations, in which there is at least one CMR. Other combinations are also possible. Theoretically, there may be more than 20 possible combinations for classifying the 3 ports into 3 categories. The UE may determine a CQI value based on each combination. The first column in Table 1 shows some combinations, and the following 3 columns show 3 categories (resource types): {CMR, IMR, silence}, and the entries in these 3 columns show which RS resources are classified into the 3 categories. The 5th column represents the CQI value determined based on each combination found. The "empty" in the entry corresponding to a category indicates that this category does not include the RS resources determined by the UE, that is, no resources in the corresponding combination are classified as this category. For example, combination 1 includes R1 to R3 classified as CMR, but no resources are classified as IMR or silence. As another example, combination 4 includes R2 and R3 classified as CMR, R1 classified as IMR, but no resource is classified as silent.

[0115] Table 1

[0116]

[0117]

[0118] In one example, if the CQI requirement specifies a threshold range of 15 dB to 20 dB (inclusive), the UE can select combination 6 according to the threshold range, whose corresponding CQI value is 17 dB and within the threshold range, and then report this combination. Therefore, under the constraints of the CQI requirement, although multiple combinations are possible, the UE can only report one combination.

[0119] In some embodiments, the network may configure one or more rules / requirements to one or more UEs, and the UEs may determine and report their respective classified RS resource combinations accordingly. For example, the network configuration specifies a first CQI requirement of a first threshold range of 15dB to 20dB and a second CQI requirement of a second threshold range of 25dB to 30dB. In this case, the UE may select and report combination 6 (CQI value is 17dB and within the first threshold range) and combination 2 (CQI value is 28dB and within the second threshold range). These two CQI requirements may be configured to the UE in the same reporting rule or in different reporting rules. For another example, the network configuration requires reporting a reporting rule for a combination of efficiency>5 and a maximum value of 3. In this case, the UE may find a maximum of 3 RS resources / ports as a combination of CMRs, and select one or more combinations that meet the efficiency requirements from the combination. Combination 1 may be an example of satisfying a reporting rule. For another example, the network configuration requires reporting a reporting rule for a combination of a range of 20dB to 25dB and a maximum value of 2. In this case, the UE may find a maximum of 2 RS resources / ports as a combination of CMRs, and select one or more combinations that meet the efficiency requirement, such as combination 3, from the combinations.

[0120] The network can also instruct the UE to report one or more combinations corresponding to a reporting rule (or a requirement). This can be configured together with the reporting rules. In some embodiments, the reporting rules can specify the conditions that the reported combination needs to meet, as well as specify the maximum number of combinations that can be reported (satisfying the conditions). For example, the network configuration specifies a reporting rule with a threshold range of 15dB to 25dB and requires that only one combination be reported according to the reporting rules. Table 1 shows that combinations 3, 5, and 6 all meet the reporting rules. However, the UE can only select and report one combination. In one example, the UE can select and report combination 3 with the highest CQI value. The UE can also randomly select a combination to report. In one example, if the network specifies that the UE can report 2 combinations according to the reporting rules, the UE can select and report 2 combinations, such as reporting combinations 3 and 5.

[0121] The UE may choose to be silent on one or more NZP resources or ports, and the network will not send data on these resources or ports. The UE may find zero, one or more combinations based on the reporting rules. The UE may report zero, one or more combinations based on the reporting rules and network configuration. The network configuration may indicate whether the UE is allowed to report one or more combinations that meet the requirements. The UE's determination / selection of the combination can be viewed as "coordinated beam selection" as this is a way to enable multiple TRPs to collaborate in deciding the beamformer set for the TRP, including silence, to manage interference.

[0122] The UE may need to find multiple or even all possible combinations for classifying RS resources, and determine / select and report one or more combinations according to the reporting rules. When there are many RS resources, this will result in a large overhead for the UE. The reporting rules have helped to reduce the number of combinations that the UE needs to find. Other mechanisms can also be applied to reduce the complexity on the UE side. In some embodiments, information on virtual (beamforming) ports can be used to reduce complexity. Antenna elements of the same array can use different precoding vectors to form different virtual ports. The virtual (beamforming) ports of antenna elements of the same array can be grouped into a group, each port has been beamformed and cannot be changed by the UE. Fig.13 A schematic diagram 1300 of different virtual ports is shown. Port group 1302 includes virtual ports of antenna elements of the same first antenna array. Port group 1304 includes virtual ports of antenna elements of the same second antenna array. The UE can select at most one port from each group. That is, the UE cannot select 2 or more ports in the port group because these ports share the same array. For example, if the UE selects port 1-1 for CMR, the UE cannot select port 1-2 for CMR, IMR or silence. This reduces the number of combinations that the UE needs to find. Note that the UE side does not need to know how the network performs beamforming, it only needs to be informed of the minimum information which ports belong to the same group, and at most one port can be selected from each group for all possible categories. This "grouping" concept does not even need to be associated only with virtual ports. Grouping can be used to let the UE select a resource (CMR or IMR) from a set of measurement resources configured for the UE. In one embodiment, a group of NZP resources are configured for the UE, each NZP resource corresponds to a transmission hypothesis (for example, one beamforming in a group of beamformings, one TRP in a group of TRPs, etc.), and the UE only selects one NZP resource as the CMR for CSI reporting, and all other NZP resources can be regarded as silent (non-service and non-interference). Similarly, one measurement resource in a group of measurement resources can be selected as the IMR for CSI reporting, and all other measurement resources can be regarded as silent (non-service and non-interference). In addition, one CSI-IM resource in a group of CSI-IM resources can be selected as the IMR for CSI reporting. In the above embodiments, the selection of CMR may affect the selection of IMR, and vice versa, that is, the resources are related, which requires additional signaling from the network.

[0123] In a collaborative area including one or more TRPs, the SIM combinations selected by different UEs based on the same configured RS resources may be inconsistent. For example, the first UE can determine and report the combination {CMR (R1, R2, R3), IMR (R5), silence (R4, R6)}, and the second UE can determine and report the combination {CMR (R4, R5, R6), IMR (R1), silence (R2, R3)}. In one example, when a service (such as a URLLC service) arrives at the first UE and no service arrives at the second UE, the network can perform LA on the first UE based on the combination selection of the first UE. When the URLLC service arrives at the first UE and the second UE respectively, if their selections are consistent, the network can perform corresponding LA on the first UE and the second UE based on the selections of the two UEs. However, when the URLLC service arrives at the first UE and the second UE respectively, if their selections are inconsistent, the network may not be able to guarantee the LA of one of the UEs.

[0124] An embodiment to reduce this inconsistency may further reduce the number of combinations that the UE can select, for example, by applying more constraints, and the network may use these constraints to limit the available degrees of freedom so that the resulting combinations are more likely to be consistent. In another embodiment, when some RS resources (e.g., ports) meet the margin requirements, the ports may not be determined by the UE; when the ports meet the margin requirements, the UE may not classify the ports into any category. Not deciding the ports allows the network to flexibly (or selectively) determine the resources for downlink transmission when reporting inconsistent selections. The UE may explicitly report the undecided ports and not report their categories. The undecided ports may be implicitly indicated to the network by the reporting combination that does not include the undecided ports. Therefore, the network can use the ports to perform LA for multiple UEs that report inconsistent combinations. For example, a low-power port may be selected as IMR by default, and the impact of the port on the resulting CQI may be small, but sufficient to affect the CQI value. Such ports may not need to be classified and / or reported together with the CQI. The margin requirements may be configured by the network. The margin requirements may specify a margin value, for example, + / –1dB relative to the CQI report. For example, if one or more ports or one or more resources are classified as CMR, the resulting CQI SINR is 23.8dB, if they are classified as silent resources, the resulting CQI SINR is 23.1dB, and / or if they are classified as IMR, the resulting CQI SINR is 22.3dB, that is, the CQI SINR obtained by classifying these ports / resources varies within + / –1dB. Therefore, the UE determines that the impact of these ports / resources on the resulting CQI is at most + / –1dB, so the UE does not report the category of these resources. The UE can also determine a margin value, and the UE determines the RS resources not to be classified based on the margin value. The UE can then report the margin value, such as + / –2dB or [0,2.5]dB, etc. After receiving the report, the network is free to decide / modify the transmission / beamforming on these resources, and understand that this will have a very limited impact on the UE's SINR. In any case, the network can use the margin to slightly adjust the LA or resource allocation to reflect the weak impact of these resources.

[0125] The UE may consider two aspects when determining the type of RS resources: (1) How to combine the classified RS resources into a compatible mode available in the gNB? (2) How to reduce the combination complexity? In some embodiments, the type of one or more RS resources (which are a subset of CSI measurement resources that the UE can use for CSI reporting) may have been predetermined or preconfigured for one or more UEs, so that the UE cannot choose to classify these RS resources. For example, for a certain UE, there may be some predetermined NZP IMRs and / or some predetermined CMRs in the RS resources configured for the UE. The UE may select its CMR, IMR, and silent resources from the remaining RS resources not included in the predetermined RS resources. In other words, the network may specify one or more CMRs, IMRs, and / or silent resources in the configured RS resources. Table 2 shows some CMRs predetermined for different UEs in the RS resource set, namely, ports 1 to 8. As shown in the table, ports 1 and 2 are preconfigured as CMRs for UE1, port 3 is preconfigured as CMR for UE2, ports 7 and 8 are preconfigured as CMRs for UE3, and ports 5 and 6 are preconfigured as CMRs for UE4. By pre-configuring CMR, the UE only needs to find possible combinations from the remaining ports that are not pre-configured. For example, UE1 can form combinations from port 3 to port 8, and then select and report one or more combinations that meet one or more reporting rules.

[0126] Table 2

[0127] Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port 7 Port 8 UE1 s s UE2 s UE3 s s UE4 s s

[0128] Preconfiguring one or more RS resources as CMR, IM and / or silent resources reduces the complexity of the UE determining the SIM combination, thereby reducing the processing burden of the UE.

[0129] The CQI value, SNR or SINR value can be derived by the UE based on the CM on the CMR set and the IM on the IMR set. The CMR set may include one or more RS resources configured (or preconfigured) by the network for CM and one or more RS resources determined by the UE for CM, as described above. The IMR set may also include one or more RS resources configured (or preconfigured) by the network for IM and one or more RS resources determined by the UE for IM, as described above. The IMR configured (or preconfigured) by the network for IM may include one or more NZP CSI-RS resources and / or one or more CSI-IM resources for IM. For example, if the UE determines or configures ports 1 and 2 as CMRs, ports 3 and 4 as IMRs, and ports 5 and 6 as silent resources, the SINR associated with port 1 will be calculated as follows. For port 1, the UE determines the receive filter w, and the receive filter is applied to all receive antenna elements for ports 1 to 4 and the associated CSI-IM resources for external interference plus noise. Then, the received power of ports 1 to 4 is measured and calculated as p1 to p4 4 and I0. When port 1 is determined to be CMR, the SINR is calculated as p1 / (p2+p3+p4+I0) (note that p2 is in the denominator even though it may also be CMR because it is inter-layer interference unless the ports are orthogonal). Similar operations can be performed on port 2 when port 2 is determined to be CMR. When both are CMR, the SINR of port 1 and the SINR of port 2 can be combined into 1 2 CQI / SINR / efficiency, including 2 layers but only one CQI / SINR / efficiency value (for one codeword) or left as 2 CQI / SINR / efficiency values ​​(generally, for two codewords). In general, ports from the same TRP (i.e., quasi-co-located with the same TRS / SSB) may be orthogonal (through time division multiplexing (TDM) / frequency division multiplexing (FDM) / space division multiplexing (SDM), etc.), that is, there may be no inter-layer interference when the UE derives SINR / CQI / efficiency. However, ports from different TRPs (quasi-co-located with different TRS / SSBs) may or may not be orthogonal, and may or may not interfere with each other. When they are all CMR, there may be inter-layer interference (such as in the case of multi-TRP SDM) or there may be no interference (such as in some multi-TRP FDM / TDM / SFN), in which case the network needs to provide the UE with information about whether to assume interference between CMR ports / resources so that the UE can correctly derive SINR / CQI / efficiency.

[0130] In some embodiments, to reduce complexity, restrictions may be applied to restrict the UE from selecting NZP resources for serving signals and interfering signals. For example, when determining the category, one or more of the following restrictions may be applied to the UE:

[0131] The total number of service layers / ports and / or epochs is at most Ns;

[0132] The total number of interference layers / ports is at most Ni;

[0133] The total number of service / interference layers / ports is at most N; increasing service layers / ports reduces interference layers / ports and vice versa;

[0134] The total number of silent layers / ports is at most m;

[0135] Fixed n s Layers / ports are used for services, and the UE cannot determine these n s The category of each layer / port;

[0136] Fixed n i layers / ports are used for interference, and the UE cannot determine these n i The category of each layer / port;

[0137] If the first port / resource is selected as the first category, the second port / resource must be selected as the second category (the second category can be the same as or different from the first category);

[0138] If a first port / resource is selected as a first category, a second port / resource cannot be selected as a second category.

[0139] In some embodiments, the complexity can be reduced by using more silent resources. For example, the UE can be configured to classify RS resources into 2 categories {CMR, silent} instead of 3 categories {CMR, IMR, silent}. In some embodiments, the number of RS resources configured to the UE (from which the UE selects and reports a combination) can be limited to a threshold or a threshold range (e.g., 4 to 8 resources / ports). Other mechanisms can also be applied without departing from the principles and spirit of the present disclosure to reduce the complexity of the UE selecting and reporting RS resource types.

[0140] The UE may report one or more CSI / CQI reports for a common resource setting or a reporting configuration for a resource setting. Each CSI / CQI report may be reported according to a current CQI table (e.g., according to a 3GPP technical specification (TS)), and each CSI / CQI report may be associated with or include a SIM combination selected by the UE. Fig.14A CQI table 1400 defined in 3GPP TS 38.214 is shown.

[0141] In some embodiments, the UE may be configured to report SIM combinations in a predetermined order, and the UE may exhaustively report all CSI / CQIs of possible SIM combinations that satisfy the reporting rules. The predetermined order may be configured by separate signaling, such as by downlink control information (DCI). This ordering may be based on CQI levels. Another way to order all combinations is to follow the natural order of the ports to be determined and the order of CMR / IMR / silence. For example, if port 3 and port 4 are to be determined, the natural order is combination 1 {CMR (3, 4), IMR (), silent ()}, combination 2 {CMR (3), IMR (4), silent ()}, combination 3 {CMR (3), IMR (), silent (4)}, combination 4 {CMR (4), IMR (3), silent ()}, combination 5 {CMR (), IMR (3, 4), silent ()}, combination 6 {CMR (), IMR (3), silent (4)}, combination 7 {CMR (4), IMR (), silent (3)}, combination 8 {CMR (), IMR (4), silent (3)}, combination 9 {CMR (), IMR (), silent (3, 4)}. () indicates that no RS resource is classified in this category, or this category is empty. A total of ceiling(log(n1×n2)) bits are required to indicate the combination, where n1 is the number of ports / resources / resource sets for which the UE is to determine the category, and n2 is the number of categories. Different methods of sorting the combinations and associated bit sequences can be considered, for example, sorting the categories first and then the ports (as described in the example above), or sorting the ports first and then the categories. A bitmap of ports / resources / resource sets to be determined can also be used, where one or more bits are used to indicate the category of each port / resource / resource set. If all combinations are to be reported, it is only necessary to report the CQI level in order without failing to report these combinations. The sorting can also be easily converted into a bit sequence or bitmap to reduce the reporting overhead in other reports in this application, for example, only some combinations are selected, so these combinations need to be indicated. Table 3 shows an example of CSI reporting for a UE configured with RS resource sets (i.e., port 1 to port 5). Of the five ports, port 1 is preconfigured for CM (i.e., as a serving port) and port 4 is preconfigured for IM (i.e., as an interfering port). Other CSI-IM resources may also be preconfigured. In this example, the UE is configured to report combinations in the order of CQI levels within the CQI range. The UE selects and reports four combinations according to the configuration: combination 1 {CMR (port 2), IMR (), silence (port 5)}, combination 2 {CMR (port 2), IMR (port 5), silence ()}, combination 3 {CMR (), IMR (), silence (port 5)} and combination 4 {CMR (), IMR (port 5), silence ()}, which can be converted into bit representations as described above.The reports of combination 1 and combination 2 are both level 2 reports (only one CQI level can be reported), and the reports of combination 3 and combination 4 are both level 1 reports. The reports of the four combinations may also include their corresponding CQI levels or equivalent / related quantities, as shown in Table 3.

[0142] Table 3

[0143] Combination No. CQI Level Service Port (CMR) Interference Port (IMR) Silent Port Service Layer 1 15 Port 2 null Port 5 2 2 12 Port 2 Port 5 null 2 3 10 null null Port 5 1 4 8 null Port 5 null 1

[0144] In some embodiments, when the UE is configured to report combinations below a threshold number, the UE can select one or more combinations from possible combinations that meet the configuration conditions or requirements for reporting. The requirements may include those discussed above, such as efficiency requirements, CQI requirements, etc. Taking the combination in Table 3 as an example, the UE is configured to report a combination that meets the efficiency requirement, for example, the efficiency is within the efficiency threshold range [3.5,5); the UE finds that both combination 1 and combination 2 meet the efficiency requirement. Since the UE is configured to report only one combination that meets the efficiency requirement, the UE can select one of the two combinations for reporting. The UE can randomly select one combination from the two combinations, or select a combination with a higher efficiency level. The UE can determine its own conditions or strategies to perform the selection. In another example, if the UE is configured to report up to 3 combinations corresponding to an efficiency requirement, the UE can report two combinations at the same time.

[0145] The UE can use the existing CQI table (e.g. Fig.14The network may configure the CQI requirements to ensure that the actual transmission can be performed at least according to the lower limit of the reported CSI. The UE may use 4 bits to report two combinations that meet the first CQI threshold range and the second CQI threshold range according to the existing CQI table 1400. In some embodiments, a new CQI table may be created that includes CQI levels aligned with the CQI requirements. For example, the new CQI table may include 4 CQI indexes (levels), each CQI index corresponding to a CQI threshold range, such as [6dB, 8dB), [8dB, 10dB), [10dB, 15dB) and [15dB, 20dB]. In this case, in order to report two combinations, the UE uses 2 bits according to the new CQI table. A new CQI table may be created to include a subset of the CQI levels of the existing CQI table (so that fewer bits are used to report the CQI levels in the new table), or a smaller CQI level range than the existing CQI table (new levels may be added to the existing levels to improve accuracy). A new CQI table may be created when the UE expects to report a combination including categories S and M (or CMR and silence) to obtain a sufficient total SINR / rate. In other words, the UE may need to report CQI / SINR / efficiency values ​​within the range limited by the reporting rules, which requires fewer bits to report. If the specified efficiency range is 4.5234 and 5.5547, the UE can only use 1 bit to report CQI index 13 or 14 to the network (see Fig.14 ). In addition, if the reporting rule specifies a sufficiently small range for the network to determine the MCS, e.g. Fig.14 In the range defined by two consecutive efficiency values, the UE may not even need to report the CQI index; it is sufficient to report the combination associated with the CQI index. This can also be extended to the case where the UE does not need to report CQI / SINR / efficiency, but only needs to report the combination that meets the reporting rules (i.e., resources / ports and their determined categories), thus reducing the reporting overhead.

[0146] Fig.15A flow chart of an exemplary CSI measurement and reporting method 1500 is shown. As shown, the gNB 1552 configures NZP CSI-RS resources, ZP CSI-RS resources, and CSI-IM resources for CSI measurement and reporting to the UE 1554 (step 1502). NZP can be used for CM, IM, or to-be-determined resources (to-be-determined as CM, IM, or silence). ZP can generally be used by the UE for rate matching, but can be extended to candidate silence resources. CSI-IM is generally used for IM. The gNB 1552 can configure the CM resource settings and / or IM resource settings to the UE (step 1504), for example, to reduce the complexity of the UE 1554 in determining the type of configured NZP resources. Resource settings generally specify a set of resources included in the resource settings to be used for CM or IM, but can be extended to to-be-determined resources (to-be-determined as CM, IM, or silence, or if necessary, to-be-determined resources can be referred to as NZP resource pools or NZP pools to distinguish them from determined resource settings) or silence resources. The gNB 1552 may specify which of the NZP resources (in step 1502) is used for CM and / or IM, which may be accomplished through resource settings, thereby helping to limit the number of combinations that the UE may have. The gNB 1552 configures one or more NZP resource pools to the UE 1554 (step 1506). The NZP pool may be one or more NZP resource sets (or one or more NZP resources, one or more NZP ports) to be determined by the UE according to its category (multiple categories), and may be configured as a new CSI resource setting (in addition to the existing 1, 2, or 3 CSI resource settings). The gNB 1552 configures the reporting settings through 1 NZP pool, 0 to 1 CM resource settings, and / or 0 to 2 IM resource settings (step 1508). Note that in the prior art, the CM resource setting must exist, otherwise there is no service signal for measurement and for calculating CQI / SINR / efficiency. In contrast, in the presence of an NZP pool, the disclosed embodiment may implement 0CM resource settings because the service signal may come from the NZP pool determined by the UE. Similarly, 0 IM resource settings can be implemented because interference plus noise may come from the NZP pool, which is different from the prior art, where 0 IM resource settings can only be used to measure RSRP, etc., but not SINR. When there is 1 IM resource setting, it can be an NZP IM resource or a CSI-IM resource setting, and when there are 2 IM resource settings, they can include NZP IM resources and CSI-IM resource settings. Therefore, a typical method of specifying a CSI reporting setting includes configuring one NZP pool resource setting and one IM resource setting, and optionally including configuring other CM / IM resource settings (up to 4 resource settings in total). The reporting setting may also include or be associated with reporting conditions / rules.Then, gNB 1552 sends a reference signal on the resources configured to the UE in step 1502 for CSI measurement (step 1510). UE 1554 performs measurement on the configured resources (step 1512). Based on the measurement, the UE generates a CQI value (or SNR / SINR / efficiency / rank value) corresponding to one of the formed SIM combinations (step 1514), and checks whether the conditions or reporting rules (e.g., CQI / SNR / SINR / efficiency / rank requirements) are met (step 1516). In this example, the CQI requirement is used. The CQI requirement may specify a CQI threshold range, as described above. If the generated CQI value is within the CQI threshold range, the SIM combination meets the CQI requirement. The UE continues to generate another CQI value corresponding to another formed SIM combination (step 1518), and checks whether this CQI value meets the CQI requirement. UE 1504 may repeat steps 1514 and 1516, and may find 0, 1, or more combinations that meet the CQI requirement. UE 1504 may then generate and send one or more reports including CQI values ​​and corresponding SIM combinations to gNB 1502 (step 1520). When multiple combinations are found to meet the CQI requirements, the UE may choose to report one, multiple, or all combinations based on the network configuration. For example, when UE 1504 requires downlink transmission, gNB 1502 may select a CQI value and its associated SIM combination (step 1522), and send downlink control signals and / or data based on the CQI value and the associated SIM combination (step 1524).

[0147] In the disclosed embodiments, the classification of NZP CSI-RS ports is somewhat similar to the allocation of DMRS ports among UEs in massive MIMO / MU MIMO transmission mode (e.g., 12 ports are allocated among 6 UEs), and is also similar to BiT UL / DL port resource sharing. Similar group common indications can be used to indicate RS resources configured for CSI measurement. A group common RS with many ports can be defined. For example, an NZP resource pool can be viewed as an aggregated NZP resource (or set / setting) where multiple ports are shared by UEs.

[0148] The gNB can be configured to freely change the precoding of the port over time to adapt to channel / interference changes and UEs moving around. There are benefits to doing this. If a UE that is not aware of this averages the CSI measurements and reports, it may encounter problems. For example, during transmission time interval (TTI) 1-100, the gNB uses precoding 1 for port 1, but during TTI 101-200, the gNB changes to use precoding 2 for port 1. If the UE averages its measurements between 200 TTIs, the average may not make sense at all. Existing technical specifications for on / off (one-time) non-averaging may not be sufficient. One solution is that the UE can extend the averaging period to T TTIs. The averaging duration of the reporting configuration including the NZP pool can be signaled to the UE from the gNB so that the UE does not average between different precodings or different network configurations associated with the NZP pool. The UE can also use SP CSI with medium access control (MAC) activation / deactivation. This will bring flexibility. For each newly activated SP CSI, the CSI measurement can be reset at the beginning.

[0149] A base station (e.g., a gNB) is free to modify its transmission scheme to be different from the transmission scheme made based on the reported CSI. The gNB may determine the transmission scheme entirely based on the reported CSI, or may modify it if it decides to modify the transmission scheme. The gNB may need to ensure that the actual SINR after the modification is higher for the indicated modulation and coding scheme (MCS). The corresponding behavior of the UE configured for determining and reporting the SIM combination may be defined, configured and / or standardized. The configuration of the CSI-RS resource set or settings may also be modified, adjusted and / or defined to accommodate the UE determining and reporting the SIM combination.

[0150] The network may need to coordinate the CSI-RS resource allocation (or commonly referred to as CSI measurement resource allocation) of UEs configured to report SIM combinations. This can be done on a slow time scale. The network does not need to coordinate based on instantaneous CSI, so the overhead / complexity is less than the overhead / complexity of traditional CoMP with coordinated beamforming (CBF) and joint transmission (JT). The exemplary method is particularly suitable for URLLC factory settings with limited mobility.

[0151] P / SP CSI-RS based measurements may mature over time. Coordinated ultra-reliable low-latency communication (CURLLC) feedback can be used to eliminate dominant interference dynamics, but there is still some dynamics in both the serving and interfering channels. If time permits, non-periodic CSI reporting can be used. Channel dynamics may be too slow for URLLC factory settings. Tracking algorithms for serving and interfering channels can be used. The gNB can estimate and apply the margin for link adaptation.

[0152] If the channel is fixed, such as in a factory or home extended reality (XR), the offline training of the collaborative CSI measurement scheme proposed in this application may be more accurate. Interference may be easier to coordinate in a closed environment than in an open space.

[0153] Various embodiments may support different transmission schemes, such as non-CoMP schemes, including SU-MIMO with rank n (n=1...8) transmission, MU-MIMO with rank 1 or rank n transmission for each UE, etc.; CoMP schemes, including coherent JT, non-coherent joint transmission (NCJT), single frequency network (SFN), dynamic point selection, dynamic point blanking (DPB), coordinated beam selection, coordinated beam blanking (in the form of FDM, TDM or SDM, etc.), and dynamic switching in all of the above schemes. One embodiment of the non-CoMP scheme is that one or more NZP CSI-RS resources / ports are determined as CMRs, and all CMRs are quasi-co-located with the same TRS / SSB. All other NZP CSI-RS resources / ports (quasi-co-located with the same or different TRS / SSBs) (if any) are determined as IMR / silent resources, except for resources in the same group as the CMR ports / resources.

[0154] One embodiment of the multi-TRP CoMP scheme is to enable the UE to select or configure a CMR port / resource that is quasi-co-located with different TRS / SSBs. Take the case where port / resource 1 is quasi-co-located with TRS1 and port / resource 2 is quasi-co-located with TRS2 as an example. If both are selected / configured as CMR, JT is supported, but if one is a CMR and the other is a silent resource, dynamic point blanking is supported. This can also be used as a reporting rule, that is, only one of the two (or usually multiple) ports / resources can be selected as a CMR (that is, one or more resources are selected from the CMR candidate pool formed by resources with configuration categories of service / silence), and the other (other) becomes a silent resource, which can be used with or without other reporting rules (such as SINR range conditions, only reporting the highest / second highest CQI / SINR / efficiency conditions, etc.), and the UE only needs to report the index of the resource selected for CMR. Similarly, the UE can select one or more resources from the IMR candidate pool formed by resources with configuration categories of interference / silence. Alternatively, the UE may need to report more than one CQI value with the same measurement resource, for example, one for port / resource 1 being CMR and another for port / resource 2 being CMR. Non-CMR ports / resources may be IMR or silent resources, which may result in up to 4 CQI values ​​being reported to support dynamic point blanking (1 serving resource and 2 silent resources, 2 serving resources and 1 silent resource, i.e. the configured category is serving / silent) and dynamic point selection (1 serving resource and 2 interfering resources, 2 serving resources and 1 interfering resource).

[0155] One embodiment supports coordinated beam blanking or dynamic point selection. Take the case where port / resource 1 is quasi-co-located with TRS1 and port / resource 2 is quasi-co-located with TRS2 as an example. If one resource is selected / configured as a CMR and the other resource is selected / configured as an IMR, this can be a way to support dynamic point selection; in addition, if a resource selected as an IMR is selected from a group of ports / resources and there is the following restriction: at most one resource in the group can be selected, this can be a way to support coordinated beam blanking, because the selected resource can correspond to reduced beamforming interference of the port / resource.

[0156] One embodiment supports NCJT in the form of FDM, TDM, and SDM from multiple TRPs. Take the case where port / resource 1 is quasi-co-located with TRS1 and port / resource 2 is quasi-co-located with TRS2. Both can be selected / configured as CMR. Two SINR / CQI / efficiency values ​​can be obtained, each as a service signal. However, when the ports are orthogonal in FDM / TDM / SDM, other ports may not cause interference, or inter-layer interference may occur in NCJT SDM transmission mode, and the network is required to notify the UE. In the case of NCJT FDM / TDM with port 1 from TRP 1 and port 2 from TRP 2, on resources where the TRP does not serve the UE, if TRP 2 can use, for example, port 3 to transmit to another UE, then port 3 needs to be in the UE's IMR. That is, for SINR 1 with port 1 as the service resource, port 3 is an interference resource, and port 2 does not need to be calculated (because port 2 and port 3 must be in the same group, and only one of them can be used at a time), but for SINR 2 with port 2 as the service resource, port 3 should not be considered as a service resource or an interference resource. This can be supported by the port / resource grouping discussed above.

[0157] In order to support multi-TRP non-coherent joint transmission (NCJT), a large number of measurement resource configurations and CQIs associated with different transmission assumptions / schemes may generally be required, resulting in a large number of CSI resource configurations and CSI report configurations. This problem can be solved by the above-mentioned embodiments. In one embodiment, the UE can be configured with a set of CMR (or IMR) candidates for reporting configuration, and the UE can select some candidates for CM (or IM) and report the index of the selected one or more candidates. Table 4 below shows an example of 2 TRPs, namely TRP A and TRP B (for simple explanation, such as A and B in Table 4). The ordered number pair (x,) in Table 4 represents (TRP A Tx or silence, TRP B Tx or silence). The value of each of x and y can be 0 or 1, for example, 0 means silence and 1 means transmission (Tx). For example, (1, 0) means that TRP A transmits on the resource and TRP B is silent on the resource, (1, 1) means that TRP A and TRP B transmit on the resource, and so on. To support various transmission schemes, such as non-NCJT (e.g., only one of TRPA and TRP B is in service and the other is in interference), DPS (e.g., only one of TRP A and B is in service and the other is in interference, and fast switching between the two is possible), DPB (e.g., only one of TRP A and B is in service and the other is in silence, and fast switching between the two is possible), SDM (both TRPs are served in different spatial layers and may also be served on overlapping time-frequency resources), etc., the UE may select one or more CMR candidates for CM and one IMR candidate for IM. The letter "Y" in Table 4 indicates the UE's selection for each of the listed transmission schemes. The UE may report one or more CQIs to the gNB as shown in Table 4. Note that some selections may be invalid, for example, selecting CMR candidate 1 and IMR candidate 2 together. These invalid selections need to be notified to the UE. In another embodiment, the UE may be configured with a set of NZP resources for reporting configuration, and the UE determines whether each NZP resource in the set of NZP resources is CM (i.e., "S" shown in Table 5), IM (i.e., "I" shown in Table 5), or silence (i.e., "M" shown in Table 5). This example is illustrated in Table 5 below. For example, the UE may be configured with CSI-IM (the UE does not need to determine the type of CSI-IM because it is already configured for IM) and NZP 1 and NZP 2. The UE determines whether NZP 1 and NZP 2 are for CM, IM, or silence, and may also use determination conditions / rules. This embodiment allows the UE to flexibly determine the types of NZP 1 and NZP 2. The embodiment in Table 4 can also be supported by the framework of the previously described embodiment (e.g., by restricting the type).

[0158] Table 4

[0159]

[0160] Table 5

[0161] NZP 1(1,0) NZP 2(0,1) CSI-IM(0,0) DPS: A service, B interference S I I DPS: A interference, B service I S I AB SDM S S I DPB: A serves, B is silent S M I DPB: B service, A mute M S I

[0162] Fig.16 A flow chart of an exemplary CSI measurement and reporting method 1600 is shown. The method may represent operations performed by a UE. As shown, in step 1602, the UE receives an RS on one or more reference signal (RS) resources. In step 1604, the UE measures the RS received on the one or more RS resources to generate an RS measurement result. In step 1606, the UE determines a first RS resource among the one or more RS resources as a first resource type among a first plurality of resource types based on the RS measurement result and a first reporting rule. In step 1608, the UE sends a first channel state information (CSI) report indicating that the first RS resource is the first resource type.

[0163] Fig.17 A flow chart of another exemplary CSI measurement and reporting method 1700 is shown. The method may represent operations on a base station side. As shown, in step 1702, the base station configures one or more RS resources to a user equipment (UE). In step 1704, the base station sends RS on the one or more reference signal (RS) resources. In step 1706, in response to sending the RS, the base station receives a channel state information (CSI) report from the UE, wherein the CSI report is based on the RS sent to the UE on the one or more RS resources. The CSI report includes a first RS resource among the one or more RS resources, and the CSI report indicates that the first RS resource is determined by the UE as a first resource type among multiple resource types.

[0164] Fig.18 A block diagram of an exemplary processing system 1800 for executing the methods described herein is shown, and the processing system 1800 can be installed in a host device. As shown in the figure, the processing system 1800 includes a processor 1804, a memory 1806, and interfaces 1810 to 1814, which may (or may not) be as described in the embodiment of the present invention. Fig.18As shown. Processor 1804 can be any component or component collection for performing calculations and / or other processing-related tasks, and memory 1806 can be any component or component collection for storing programming and / or instructions for execution by processor 1804. In one embodiment, memory 1806 includes a non-transitory computer-readable medium. Interfaces 1810, 1812, and 1814 can be any component or component collection that enables processing system 1800 to communicate with other devices / components and / or users. For example, one or more of interfaces 1810, 1812, and 1814 can be used to transmit data, control, or management messages from processor 1804 to applications installed on a host device and / or a remote device. For another example, one or more of interfaces 1810, 1812, and 1814 can be used to enable a user or user device (e.g., a personal computer (PC), etc.) to interact / communicate with processing system 1800. Processing system 1800 may include Fig.18 Other components not shown, such as long-term storage (e.g., non-volatile memory, etc.).

[0165] In some embodiments, the processing system 1800 is included in a network device that accesses a telecommunication network or is part of a telecommunication network. In one example, the processing system 1800 is located in a network-side device in a wireless or wired telecommunication network, such as a base station, a relay station, a scheduler, a controller, a gateway, a router, an application server, or any other device in the telecommunication network. In other embodiments, the processing system 1800 is located in a user-side device that accesses a wireless or wired telecommunication network, such as a mobile station, a user equipment (UE), a personal computer (PC), a tablet computer, a wearable communication device (e.g., a smart watch, etc.), or any other device for accessing a telecommunication network.

[0166] In some embodiments, one or more of interfaces 1810, 1812, and 1814 connects processing system 1800 to a transceiver for sending and receiving signaling over a telecommunications network. Fig.19A block diagram of a transceiver 1900 for sending and receiving signaling via a telecommunications network is shown. The transceiver 1900 can be installed in a host device. As shown, the transceiver 1900 includes a network side interface 1902, a coupler 1904, a transmitter 1906, a receiver 1908, a signal processor 1910, and a device side interface 1912. The network side interface 1902 may include any component or component set for sending or receiving signaling via a wireless or wired telecommunications network. The coupler 1904 may include any component or component set for facilitating bidirectional communication via the network side interface 1902. The transmitter 1906 may include any component or component set (e.g., upconverter, power amplifier, etc.) for converting a baseband signal into a modulated carrier signal suitable for sending via the network side interface 1902. The receiver 1908 may include any component or component set (e.g., downconverter, low noise amplifier, etc.) for converting a carrier signal received via the network side interface 1902 into a baseband signal. The signal processor 1910 may include any component or collection of components for converting a baseband signal into a data signal (or converting a data signal into a data signal) suitable for communication through one or more device-side interfaces 1912. The one or more device-side interfaces 1912 may include any component or collection of components for transmitting data signals between the signal processor 1910 and various components within a host device (e.g., the processing system 1800, a local area network (LAN) port, etc.).

[0167] The transceiver 1900 can send and receive signaling through any type of communication medium. In some embodiments, the transceiver 1900 sends and receives signaling through a wireless medium. For example, the transceiver 1900 can be a wireless transceiver for communicating according to a wireless communication protocol (e.g., a cellular protocol (e.g., Long Term Evolution (LTE)), a wireless local area network (WLAN) protocol (e.g., Wi-Fi, etc.), or any other type of wireless protocol (e.g., Bluetooth, near field communication (NFC), etc.). In these embodiments, the network side interface 1902 includes one or more antenna / radiation units. For example, the network side interface 1902 may include a single antenna, multiple independent antennas, or a multi-antenna array for multi-layer communication, such as single input multiple output (SIMO), multiple input single output (MISO), multiple input multiple output (MIMO), etc. In other embodiments, the transceiver 1900 sends and receives signaling through a wired medium such as a twisted pair cable, a coaxial cable, or an optical fiber. A particular processing system and / or transceiver may utilize all of the components shown, or only a subset of the components described, and the degree of integration may vary from device to device.

[0168] Although the present disclosure has been described with reference to illustrative embodiments, this description is not intended to be understood in a limiting sense. Those skilled in the art will appreciate various modifications and combinations of the illustrative embodiments and other embodiments of the present invention after reference to the description. Therefore, the appended claims are intended to cover any such modifications or embodiments.

Claims

1. A communication method, characterized in that: The method comprises: receiving a RS from a network device on one or more reference signal RS resources; measuring the RS received on the one or more RS resources to generate an RS measurement result; Determine, according to the RS measurement result and the first reporting rule, a first RS resource among the one or more RS resources as a first resource type among the first plurality of resource types; and A first channel state information (CSI) report is sent indicating the first RS resource as the first resource type.

2. The method according to claim 1, characterized in that The first CSI report includes a first channel quality indication CQI value obtained according to a determination result of the first RS resource.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: The first RS resource is associated with the first resource type.

4. The method according to any one of claims 1 to 3, characterized in that The one or more RS resources include one or more ports, and each RS resource includes one or more ports.

5. The method according to any one of claims 1 to 4, characterized in that The one or more RS resources are configured as a non-zero power channel state information reference signal (NZP CSI-RS) resource setting, an NZP CSI-RS resource set, or an NZP CSI-RS resource.

6. The method according to claim 5, characterized in that At least one port, one of the one or more RS resources, the NZP CSI-RS resource setting, the NZP CSI-RS resource set or the NZP CSI-RS resource is configured to the terminal device as a measurement resource determined by the terminal device.

7. The method according to any one of claims 1 to 6, characterized in that The first plurality of resource types include resources used for channel measurement, resources used for interference measurement, zero power resources and silent resources.

8. The method according to any one of claims 1 to 6, characterized in that The first resource type is a resource used for channel measurement, a resource used for interference measurement, a zero power resource or a silent resource.

9. The method according to any one of claims 1 to 8, characterized in that The one or more RS resources and the first reporting rule are associated with a CSI reporting configuration.

10. The method according to any one of claims 1 to 9, characterized in that The one or more RS resources are quasi co-located QCLed with the same channel state information reference signal CSI-RS for tracking or the same synchronization signal block SSB.

11. The method according to any one of claims 1 to 9, characterized in that The first subset of the one or more RS resources is quasi-co-located with a first CSI-RS or a first SSB used for tracking, and the second subset of the one or more RS resources is quasi-co-located with a second CSI-RS or a second SSB used for tracking.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: Determine, according to the RS measurement result and the second reporting rule, a second RS resource among the one or more RS resources as a second resource type among the second plurality of resource types, and generate, according to the determination result, a second CSI report indicating that the second RS resource is determined as the second resource type; and Report the second CSI report.

13. The method according to claim 12, characterized in that The first plurality of resource types are the same as or different from the second plurality of resource types, and the first resource type is the same as or different from the second resource type.

14. The method according to claim 12, characterized in that The second reporting rule and the first reporting rule are associated with the same CSI reporting configuration or different CSI reporting configurations.

15. The method according to any one of claims 1 to 14, characterized in that The method further comprises: Determine, according to the RS measurement result and the first reporting rule, a third RS resource among the one or more RS resources as a third resource type among the multiple resource types; and Report a result of determining the third RS resource as the third resource type.

16. The method according to claim 15, characterized in that The first resource type is the same as or different from the third resource type.

17. The method according to any one of claims 1 to 16, characterized in that A signal-to-noise ratio (SNR) value of the first RS resource is greater than a threshold.

18. The method according to any one of claims 1 to 17, characterized in that The first reporting rule specifies efficiency requirements, CQI requirements, SNR requirements, signal-to-interference-and-noise ratio (SINR) requirements or rank requirements, and determines whether the RS resource is one of the multiple resource types based on the efficiency requirements, the CQI requirements, the SNR requirements, the SINR requirements or the rank requirements, and reports the determination result.

19. The method according to claim 18, characterized in that The method further comprises: According to a result of selecting the first RS resource as the first resource type, obtaining a CQI value, an SNR, an SINR, or a rank value, thereby generating a corresponding efficiency value; determining whether the efficiency value meets the efficiency requirement, or whether the CQI value meets the CQI requirement, or whether the SNR / SINR meets the SNR / SINR requirement, or whether the rank value meets the rank requirement; and When it is determined that the efficiency value / CQI value / SNR / SINR / rank value respectively meets the efficiency / CQI / SNR / SINR / rank requirements, the first RS resource is determined to be the first resource type.

20. The method according to claim 19, characterized in that The CQI value, SNR or SINR is obtained based on the CM on the channel measurement CM resource set and the IM on the interference measurement IM resource set, the CM resource set includes RS resources configured by the network for channel measurement and RS resources determined for channel measurement, the IM resource set includes resources configured by the network for interference measurement and RS resources determined for interference measurement, and the resources configured by the network for interference measurement include one or more NZP CSI-RS resources for interference measurement and / or one or more CSI interference measurement CSI-IM resources.

21. The method according to claim 18, characterized in that The efficiency requirement specifies an efficiency / CQI / SNR / SINR / rank threshold range or an efficiency / CQI / SNR / SINR / rank threshold or an ordering of efficiency / CQI / SNR / SINR.

22. A communication method, characterized in that: The method comprises: Allocate one or more reference signal RS resources to the terminal device; sending a RS to the terminal device on the one or more RS resources; and In response to sending the RS, receiving a channel state information CSI report from the terminal device, wherein the CSI report is based on the RS sent to the terminal device on the one or more RS resources, the CSI report includes a first RS resource among the one or more RS resources, and the CSI report indicates that the first RS resource is determined by the terminal device as a first resource type among multiple resource types.

23. The method according to claim 22, characterized in that The CSI report includes a first channel quality indication (CQI) value associated with the first RS resource determined to be of the first resource type.

24. The method according to claim 22 or 23, characterized in that The one or more RS resources include one or more ports, and each RS resource includes one or more ports.

25. The method according to any one of claims 22 to 24, characterized in that The one or more RS resources are configured to the terminal device as a non-zero power channel state information reference signal NZP CSI-RS resource setting, an NZP CSI-RS resource set or an NZP CSI-RS resource.

26. The method according to claim 25, characterized in that At least one port, one of the one or more RS resources, the NZP CSI-RS resource setting, the NZP CSI-RS resource set or the NZP CSI-RS resource is configured to the terminal device as a measurement resource determined by the terminal device.

27. The method according to any one of claims 22 to 26, characterized in that The multiple resource types include resources for channel measurement, resources for interference measurement, zero power resources and silent resources.

28. The method according to any one of claims 22 to 27, characterized in that The first resource type is a resource used for channel measurement, a resource used for interference measurement, a zero power resource or a silent resource.

29. The method according to any one of claims 22 to 28, characterized in that The one or more RS resources are quasi co-located QCLed with the same channel state information reference signal CSI-RS for tracking or the same synchronization signal block SSB.

30. The method according to any one of claims 22 to 29, characterized in that The first subset of the one or more RS resources is quasi-co-located with a first CSI-RS or a first SSB used for tracking, and the second subset of the one or more RS resources is quasi-co-located with a second CSI-RS or a second SSB used for tracking.

31. The method according to any one of claims 22 to 30, characterized in that The CSI report also includes a second RS resource among the one or more RS resources, and the second RS resource is determined by the terminal device as a second resource type among the multiple resource types.

32. The method according to claim 31, characterized in that The first resource type is the same as or different from the second resource type.

33. The method according to claim 31, characterized in that The first RS resource corresponds to a first reporting rule, and the second RS resource corresponds to a second reporting rule different from the first reporting rule. The first reporting rule and the second reporting rule specify requirements for the terminal device to determine whether the RS resource is one of the multiple resource types and report the determination result.

34. The method according to claim 33, characterized in that The first reporting rule and the second reporting rule specify different efficiency requirements, different signal-to-noise ratio (SNR) requirements, different signal-to-interference-and-noise ratio (SINR) requirements, or different rank requirements.

35. The method according to claim 33, characterized in that The method further comprises: Send information about the first reporting rule and / or the second reporting rule to the terminal device.

36. A device, characterized in that The device comprises: A non-transitory memory including instructions; One or more processors in communication with the memory, wherein the instructions, when executed by the one or more processors, cause the apparatus to perform the following operations: Receiving RS on one or more reference signal RS resources; measuring the RS received on the one or more RS resources to generate an RS measurement result; Determining, according to the RS measurement result and the first reporting rule, a first RS resource among the one or more RS resources as a first resource type among multiple resource types; and A first channel state information (CSI) report is sent indicating the first RS resource as the first resource type.

37. A device, characterized in that The device comprises: A non-transitory memory including instructions; One or more processors in communication with the memory, wherein the instructions, when executed by the one or more processors, cause the apparatus to perform the following operations: Configure one or more reference signal RS resources to a user equipment UE; sending a RS to the UE on the one or more RS resources; and In response to sending the RS, receiving a channel state information (CSI) report from the UE, wherein the CSI report is based on the RS sent to the UE on the one or more RS resources, the CSI report includes a first RS resource among the one or more RS resources, and the CSI report indicates that the first RS resource is determined by the UE as a first resource type among multiple resource types.

38. A system, characterized in that: The system comprises: The user equipment UE is configured to perform the following operations: Receiving RS on one or more reference signal RS resources; measuring the RS received on the one or more RS resources to generate an RS measurement result; Determining, according to the RS measurement result and the first reporting rule, a first RS resource among the one or more RS resources as a first resource type among multiple resource types; and sending a first channel state information (CSI) report indicating the first RS resource as the first resource type; A base station is configured to: configuring the one or more RS resources to the UE; transmitting the RS to the UE on the one or more RS resources; and In response to sending the RS, the first CSI report is received from the UE.

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