Wireless Communication Methods and Devices

Description

1 / 47 Wireless Communication Methods and Devices TECHNICAL FIELD

[0001] This disclosure relates to wireless communications and, more specifically, to wireless communication methods and devices. BACKGROUND

[0002] A wireless communications system may include one or more network communication devices, such as base stations, which may support wireless communications to one or more user communication devices, which may also be known as user equipment (UE) or other suitable terminology. The wireless communications system may support wireless communications with one or more user communication devices by utilizing wireless communications system features (e.g., timing features (e.g., symbols, slots, subframes, frames, or the like) or frequency features (e.g., subcarriers, carriers, or the like).In addition, the wireless communications system can support wireless communications in various radio access technologies, including third-generation (3G) radio access technology, fourth-generation (4G) radio access technology, fifth-generation (5G) radio access technology, and other suitable radio access technologies besides 5G (e.g., sixth generation (6G)). SUMMARY

[0003] The article "a" before an element is unrestricted and understood as referring to at least one of those elements or to one or more of those elements. The terms "a," "at least one," "one or more," and "at least one of one or more" may be interchangeable. As used in this document, including in the claims, or as used in a list of items (for example, a list of items preceded by a phrase such as "at least one of" or "one or more of" or "one or both of") indicates a Petition 870250088426, dated 09 / 30 / 2025, page 10 / 69 2 / 47 inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used in this document, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as based on condition A could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used in this document, the expression "based on" should be interpreted in the same way as the expression "based at least in part on". Furthermore, as used in this document, including in the claims, a "set" may include one or more elements.

[0004] Some implementations of the methods and devices described in this document may also include a wireless communication UE, which includes: at least one memory; and at least one processor coupled to at least one memory and configured to make the UE: receive a first signal indicating a set of channel state information (CSI) reference signal (RS) resources (CSI-RS); receive a second signal indicating one or more indications of a subset of ports associated with the CSIRS resource set or indicating a first number less than a number of CSI-RS resources in the CSI-RS resource set;and determine, based on the first signaling and the second signaling, an index of a CSI-RS feature for CSI-RS feature indicator (CRI) reporting, an association between channel measurement feature (CMR) and interference measurement feature (IMR), an index of a CSI reporting configuration, or any combination thereof.

[0005] In some implementations of the methods and devices described in this document, at least one processor is configured to perform the UE: determine a set of indications. Petition 870250088426, dated 09 / 30 / 2025, page 11 / 69 3 / 47 of port subset for the CSI-RS feature set based on port subset indications for each CSI-RS feature in the CSI-RS feature set.

[0006] In some implementations of the methods and devices described in this document, each port subset indication of the port subset indication set is identified by an index.

[0007] In some implementations of the methods and devices described in this document, the port subset indications for each CSI-RS feature in the CSI-RS feature set are the same or different.

[0008] In some implementations of the methods and devices described in this document, if the port subset indications for each CSI-RS feature are the same, a set of port subset indications for the set of CSI-RS features is one or multiple port subset indications.

[0009] In some implementations of the methods and devices described in this document, if the port subset indications for each CSI-RS resource are different, a set of port subset indications for the CSI-RS resource set contains port subset indications for all CSI-RS resources in the CSI-RS resource set.

[0010] In some implementations of the methods and devices described in this document, at least one processor is configured to perform the UE: determine a subset of CSI-RS resources from the CSI-RS resource set for each port subset indication based on port subset indications for each CSI-RS resource from the CSI-RS resource set; and determine an index of a CSI-RS resource associated with a port subset indication based on a subset of CSI-RS resources associated with the indication. Petition 870250088426, dated 09 / 30 / 2025, p. 12 / 69 4 / 47 subset of ports to be reported.

[0011] In some implementations of the methods and devices described in this document, at least one processor is configured to perform the UE: determine one or multiple CSI-RS feature subsets by dividing the CSI-RS feature set by the first number, wherein a CSI-RS feature number in each of the one or multiple CSI-RS feature subsets is equal to the first number, or a number of one or more CSI-RS feature subsets is equal to the first number.

[0012] In some implementations of the methods and devices described in this document, the CSI-RS features in a subset of CSI-RS features are associated with the same CSI reporting configuration or with different CSI reporting configurations.

[0013] In some implementations of the methods and devices described in this document, if the CSI-RS resources in a subset of CSI-RS resources are associated with the same CSI reporting configuration, at least one processor is configured to have the UE determine an index of a CSI-RS resource in the subset of CSI-RS resources to be reported.

[0014] In some implementations of the methods and devices described in this document, if the CSI-RS resources in a subset of CSI-RS resources are associated with different CSI reporting configurations, at least one processor is configured to have the UE determine multiple groups of CSI-RS resources from the set of CSI-RS resources based on an association between the CSI-RS resource and the CSI reporting configuration, where the CSI-RS resources in each of the multiple groups of CSI-RS resources are associated with the same CSI reporting configuration.

[0015] In some implementations of the methods and devices described in this document, at least one processor is Petition 870250088426, dated 09 / 30 / 2025, p. 13 / 69 5 / 47 configured to have the UE determine an index of a CSI-RS resource from a group of CSI-RS resources from the multiple groups of CSI-RS resources to be reported.

[0016] In some implementations of the methods and devices described in this document, at least one processor is configured to have the UE receive a third signal indicating an IMR set, and the CSIRS feature set indicated by the first signal is for channel measurement.

[0017] In some implementations of the methods and devices described in this document, the number of IMRs in the IMR set is the same as the number of CSI-RS features in the CSI-RS feature set, and the indications of one or multiple port subsets are associated with the same IMR.

[0018] In some implementations of the methods and devices described in this document, at least one processor is configured to have the UE determine an IMR associated with a port subset indication based on a CSI-RS feature associated with the IMR.

[0019] In some implementations of the methods and devices described in this document, a number of IMRs in the IMR set is determined based on the number of CSI-RS features in the CSI-RS feature set and a higher number of port subset indications among those of port subset indications for each CSI-RS feature in the CSI-RS feature set.

[0020] In some implementations of the methods and devices described in this document, the numbers of port subset indications for different CSI-RS features in the CSI-RS feature set are the same or different.

[0021] In some implementations of the methods and devices described in this document, at least one processor is configured to have the UE determine an IMR index associated with a port subset indication based on an index. Petition 870250088426, dated 09 / 30 / 2025, p. 14 / 69 6 / 47 of the associated CSI-RS resource and an index of the associated port subset indication.

[0022] In some implementations of the methods and devices described in this document, a number of IMRs in the IMR set is equal to the number of CSI-RS features in the CSI-RS feature set, a number of CSI-RS feature subsets determined by dividing the CSI-RS feature set by the first number, or a number of CSI-RS features in a CSI-RS feature subset.

[0023] In some implementations of the methods and devices described in this document, the CSI-RS features of a subset of CSI-RS features are associated with the same IMR.

[0024] In some implementations of the methods and devices described in this document, at least one processor is configured to perform the UE: determine an index for each CSI-RS feature of a subset of CSI-RS features to identify the CSI-RS feature within the subset of CSI-RS features based on an order of the CSI-RS feature within the subset of CSI-RS features; and determine the IMR associated with each CSI-RS feature of the subset of CSI-RS features based on the index.

[0025] In some implementations of the methods and devices described in this document, at least one processor is configured to make the UE: receive a third signal indicating a number of CSI report configurations; and transmit indexes of one or more CSI report configurations based on the number of CSI report configurations, where each CSI report configuration index is based on a subset index.

[0026] In some implementations of the methods and devices described in this document, at least one processor is configured to make the UE: receive a third signal indicating a number of CSI reporting configurations; and Petition 870250088426, dated 09 / 30 / 2025, page 15 / 69 7 / 47 transmit indexes from one or more CSI report configurations based on the number of CSI report configurations, where each CSI report configuration index is based on a group index.

[0027] Some implementations of the methods and devices described in this document may also include a processor for wireless communication, which includes: at least one controller coupled to at least one memory and configured to make the at least one processor: receive a first signal indicating a set of CSI-RS features; receive a second signal indicating one or more indications of a subset of ports associated with the set of CSI-RS features or indicating a first number less than a number of CSI-RS features in the set of CSI-RS features; and determine, based on the first and second signals, an index of a CSI-RS feature for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof.

[0028] Some implementations of the methods and devices described in this document may also include a network device (ND) for wireless communication, which includes: at least one memory; and at least one processor coupled to at least one memory and configured to make the RAN node: transmit a first signal indicating a set of CSIRS resources; transmit a second signal indicating one or more indications of a subset of ports associated with the CSI-RS resource set or indicating a first number less than a number of CSI-RS resources in the CSI-RS resource set; and determine an index of a CRI report, an association between CMR and IMR, an index of a CSI report configuration, or any combination thereof, based on the CSI-RS resource set and the one or more indications of a subset of ports or the first Petition 870250088426, dated 09 / 30 / 2025, p. 16 / 69 8 / 47 number.

[0029] Some implementations of the methods and devices described in this document may further include a method performed by a UE, which includes: receiving a first signal indicating a set of CSI-RS resources; receiving a second signal indicating one or more indications of a subset of ports associated with the set of CSI-RS resources or indicating a first number less than a number of CSI-RS resources in the set of CSI-RS resources; and determining, based on the first and second signals, an index of a CSI-RS resource for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 illustrates an example of a wireless communications system in accordance with aspects of the present disclosure.

[0031] Figure 2 is an example of the association between spatial domain adaptation patterns and CSI-RS features in the case of Type 1, according to the aspect of this disclosure.

[0032] Figure 3 is an example of the association between spatial domain adaptation pattern, IMR and IMR in the case of Type 1 according to the aspect of the present disclosure.

[0033] Figure 4 is an example of the association between spatial domain adaptation pattern, IMR and CMR in the case of Type 2, according to the aspect of the present disclosure.

[0034] Figure 5 is also an example of the association between spatial domain adaptation pattern, IMR and CMR in the case of Type 2, according to the aspect of this disclosure.

[0035] Figure 6 illustrates an example of a user equipment (UE) 600 according to aspects of this disclosure.

[0036] Figure 7 illustrates an example of a 700 processor according to aspects of the present disclosure. Petition 870250088426, dated 09 / 30 / 2025, page 17 / 69 9 / 47

[0037] Figure 8 illustrates an example of an 800 network equipment (NE) according to aspects of this disclosure.

[0038] Figure 9 illustrates a flowchart of the method performed by a UE in accordance with aspects of this disclosure.

[0039] Figure 10 illustrates a flowchart of the method performed by a NE in accordance with aspects of this disclosure. DETAILED DESCRIPTION

[0040] Considering the radio access network (RAN)1 meeting agreements in multiple CSI reporting configurations (or referred to as CSI reporting sub-configurations, or sub-configurations, or configurations, or the like) corresponding to different spatial domain adaptation patterns (or referred to as spatial adaptation patterns) and supporting both beams (or referred to as spatial domain information, quasi-co-location (QCL) information, direction, angle or the like) and spatial domain adaptation patterns in a CSI-RS feature set (or referred to as a CSI-RS set), there is a mass of technical issues or problems to be studied and solved in the industry.Exemplary technical problems to be solved involve: how to index beams and spatial domain adaptation patterns, how to determine interference measurement features for each spatial domain adaptation pattern, and how to select or ignore certain CSI reporting settings, etc. Regarding a beam, it can be represented in various ways, such as RS, spatial domain filter, or QCL assumption, etc.

[0041] According to aspects of this disclosure, all these technical problems are considered in view of Type 1 (type 1 or TYPE 1) and Type 2 (type 2 or TYPE 2) cases in RAN1 in normal examples for grid energy saving (NES) space domain adaptations. Space domain adaptation (or referred to as space adaptation) in view of Type 1 and Type 2 cases, respectively, is also referred to as adaptation. Petition 870250088426, dated 09 / 30 / 2025, page 18 / 69 10 / 47 spatial domain Type 1 (or Type 1 adaptation) and spatial domain Type 2 (or Type 2 adaptation). In the case of Type 1, all antenna elements associated with a logical antenna port are disabled or enabled. As a result, there will be different numbers of antenna ports associated with different Type 1 spatial adaptation patterns. In Type 2, part or a subset of antenna elements associated with a logical antenna port is disabled or enabled. Consequently, different Type 2 spatial adaptations are associated with the same antenna number, while the beam (or spatial beam) can change between different spatial adaptation patterns.

[0042] For example, according to aspects of this disclosure, in the case of Type 1, each port subset indication is associated with a CSI reporting configuration, for example, associated with a CSI reporting configuration index. There is always a CSI-RS resource port configuration for a CSI-RS resource. Furthermore, a port subset indication can be configured for a CSI-RS resource. When there is a CSI-RS resource pool, each CSI-RS resource in the resource pool can be configured as a port subset indication. Or, alternatively, a port subset indication is applied to all CSI-RS resources in the CSI-RS resource pool. If there is a single CSI reporting configuration for a CSI-RS resource pool, with multiple port subset indications, there will be multiple CSI reporting subconfigurations associated with the CSI reporting configuration.Each subconfiguration can be associated with a port subset indication. Port subset indications for a CSI-RS feature set are a set (or a union set) of port subset indications for each CSI-RS feature (or termed CSI-RS) in the CSI-RS feature set. For each port subset indication, there is a feature subset. Petition 870250088426, dated 09 / 30 / 2025, p. 19 / 69 11 / 47 of CSI-RS is determined based on the same port subset indication. Each port subset indication is also associated with a spatial domain adaptation pattern. When the CRI (CSIRS Feature Index) report for each spatial domain adaptation is configured, the determination of a CSI-RS feature index is based on the CSI-RS feature subset associated with each port subset indication. If the CSI-RS feature subset is different from the original CSI-RS feature set, the CSI-RS feature indexing within the subset may be considered for the CRI report. Alternatively, the indexing within the original CSI-RS feature set may also be considered. Regarding IMR, several implementations of this disclosure are disclosed when the CSI-RS feature set is used for channel measurement.In some implementations of this disclosure, multiple port subset indications of the same CSI-RS resource are associated with the same IMR. The number of IMRs is equal to the number of CMRs, for example, the number of CSI-RS resources in the CSI-RS resource set. In some other implementations of this disclosure, each port subset indication of a CSI-RS resource is associated with an IMR. The number of IMRs is determined by multiplying the number of CMRs by the number of port subset indications. The number of port subset indications may be the number of port subset indications for a single CSI-RS resource. Alternatively, the number of port subset indications may be the largest number among those of port subset indications for each CSI-RS resource in the CSI-RS resource set.

[0043] According to aspects of this disclosure, in the case of Type 2, a beam number or spatial adaptation number is configured to divide the CSI-RS feature set into Petition 870250088426, dated 09 / 30 / 2025, page 20 / 69 12 / 47 Multiple CSI-RS feature subsets. Each CSI-RS feature is associated with a beam index and a spatial adaptation pattern index. CSI-RS features associated with the same spatial adaptation pattern index can be adopted to construct a CSI-RS feature subset. There may be one or multiple CSI-RS feature subsets, and each is associated with a spatial adaptation pattern. When there is a CRI report for each spatial adaptation pattern, CSI-RS feature indexing can be based on the CSI-RS subset determined for each spatial adaptation pattern. CSI-RS feature indexing can be based on its index within the subset or, alternatively, CSI-RS feature indexing can also be based on its index in the original CSI-RS feature set.

[0044] CSI-RS features associated with the same beam index can also be adopted to construct a CSI-RS group. There can be one or multiple CSI-RS groups, and each CSI-RS group is associated with a beam index. Different CSI-RS features within the CSI-RS group are associated with different spatial adaptation patterns. Different spatial adaptation patterns can be associated with different CSI reporting configurations or different CSI reporting sub-configurations. Similarly, with respect to IMR, various implementations of the present disclosure are disclosed when the CSI-RS feature set is used for channel measurement. In some implementations of the present disclosure, the number of IMRs is the same as the number of CMRs, for example, the number of CSIRS features in the CSI-RS feature set, IMRs and CMRs are mapped one-to-one.In some other implementations of this disclosure, the number of IMRs is the number of CMR beams, and all CSI-RS features that share the same spatial adaptation pattern are mapped to the same IMR. In some other implementations of this disclosure, the number of IMRs... Petition 870250088426, dated 09 / 30 / 2025, page 21 / 69 13 / 47 is the number of spatial adaptation patterns of CMRs, and all CSI-RS features that share the same beam are mapped to the same IMR.

[0045] The implementations of this disclosure resolve, at least, problems related to beam indexing and spatial adaptation patterns for Type 1 and Type 2 spatial domain adaptation for CRI reporting, determination of interference measurement resource and UE-selected reporting for multiple CSI reporting configurations, etc., which will favor energy savings in the spatial domain network. On the other hand, this disclosure contributes to the evolution of wireless communication technologies and may facilitate the implementation and application of NR.

[0046] Aspects of the present disclosure are described in the context of a wireless communications system.

[0047] Figure 1 illustrates an example of a 100 wireless communications system, according to aspects of this disclosure. The 100 wireless communications system may include one or more NEs 102, one or more UEs 104, and a core network (CN) 106. The 100 wireless communications system may support various radio access technologies. In some implementations, the 100 wireless communications system may be a 4G network, such as an LTE network or an LTE Advanced (LTE-A) network. In some other implementations, the 100 wireless communications system may be an NR network, such as a 5G network, a 5G Advanced (5G-A) network, or a 5G ultra-wideband (5G-UWB) network. In other implementations, the 100 wireless communications system may be a combination of a 4G network and a 5G network, or other suitable radio access technology, including the Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20 standards.The 100 wireless communications system can support radio access technologies beyond 5G, for example, 6G. Furthermore, the 100 wireless communications system... Petition 870250088426, dated 09 / 30 / 2025, page 22 / 69 14 / 47 can support technologies such as time-division multiple access (TDMA), frequency-division multiple access (FDMA), or code-division multiple access (CDMA), etc.

[0048] One or more NE 102s may be dispersed over a geographical region to form the wireless communications system 100. One or more of the NE 102s described in this document may be, include, or be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN), a NodeB, an eNodeB (eNB), a next-generation NodeB (gNB), or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) via a Uu interface.

[0049] A NE 102 can provide a geographic coverage area for which the NE 102 can support services for one or more UEs 104 within the geographic coverage area. For example, a NE 102 and a UE 104 can support wireless communication of service-related signals (e.g., voice, video, packet data, messaging, broadcast, etc.) according to one or multiple radio access technologies. In some implementations, a NE 102 can be mobile, for example, a satellite associated with a non-terrestrial network (NTN). In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with different NE 102s.

[0050] One or more UEs 104 may be dispersed throughout a geographical region of the wireless communications system 100. A UE 104 may include or be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a Petition 870250088426, dated 09 / 30 / 2025, page 23 / 69 15 / 47 receiving device or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine-to-communication (MTC) device, among other examples.

[0051] A UE 104 can support wireless communication directly with other UE 104s via a communication link. For example, a UE 104 can support wireless communication directly with another UE 104 via a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V), vehicle-to-everything (V2X), or cellular-V2X deployments, the communication link 114 may be referred to as a side link. For example, a UE 104 can support wireless communication directly with another UE 104 via a PC5 interface.

[0052] An NE 102 can support communications with CN 106, or with another NE 102, or both. For example, an NE 102 can interact with another NE 102 or with CN 106 through one or more backhaul links (e.g., S1, N2, N2, or network interface). In some deployments, the NE 102 can communicate directly. In other implementations, the NE 102 can communicate with each other or indirectly (e.g., through CN 106). In some implementations, one or more NE 102s may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). An ANC can communicate with one or more UEs 104 through one or more other access network transmission entities, which may be called radio heads, smart radio heads, or transmit-receive points (TRPs).

[0053] CN 106 can support user authentication, Petition 870250088426, dated 09 / 30 / 2025, p. 24 / 69 16 / 47 Access authorization, tracking, connectivity, and other access, routing, or mobility functions. CN 106 can be an evolved packet core (EPC) or a 5G core (5GC), which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and a user plane entity that routes packets or interconnects with external networks (e.g., a service gateway (S-GW), a packet data network gateway (PDN) (P-GW), or a user plane function (UPF)). In some implementations, the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc.) for one or more UEs 104 served by one or more NEs 102 associated with CN 106.

[0054] CN 106 can communicate with a packet data network via one or more backhaul links (e.g., via an S1, N2, N2, or other network interface). The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g., a Protocol Data Unit (PDU) session or similar) with CN 106 via a NE 102. CN 106 may route traffic (e.g., control information, data, and similar) between UE 104 and the application server using the established session (e.g., the established PDU session). The PDU session may be an example of a logical connection between UE 104 and CN 106 (e.g., one or more network functions of CN 106).

[0055] In the wireless communications system 100, NEs 102 and UEs 104 can utilize wireless communications system 100 features (e.g., timing features (e.g., symbols, slots, subframes, frames, or similar) or features Petition 870250088426, dated 09 / 30 / 2025, page 25 / 69 Frequency ranges (e.g., subcarriers, carriers) are used to perform various operations (e.g., wireless communications). In some implementations, NE102 and UE104 devices may support different resource structures. For example, NE102 and UE104 devices may support different frame structures. In some implementations, such as 4G, NE102 and UE104 devices may support a single frame structure. In some other implementations, such as 5G and other suitable radio access technologies, NE102 and UE104 devices may support multiple frame structures (i.e., multiple frame structures). NE102 and UE104 devices may support various frame structures based on one or more numerologies.

[0056] One or more numerologies may be supported in the 100 wireless communications system, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) can be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix.A fourth numerology (e.g., μ=3) can be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) can be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.

[0057] A time interval of a resource (for example, a communication resource) can be organized according to frames. Petition 870250088426, dated 09 / 30 / 2025, p. 26 / 69 18 / 47 (also called radio frames). Each frame can have a duration, for example, a duration of 10 milliseconds (ms). In some implementations, each frame can include multiple subframes. For example, each frame can include 10 subframes, and each subframe can have a duration, for example, a duration of 1 ms. In some implementations, each frame can have the same duration. In some implementations, each subframe of a frame can have the same duration.

[0058] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on one or more numerologies supported in the 100 wireless communication system. For example, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with the respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot can include a number (e.g., quantity) of symbols (e.g., OFDM symbols). In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology.For a normal cyclic prefix, a slot can include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing), a slot can include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that the reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may... Petition 870250088426, dated 09 / 30 / 2025, page 27 / 69 19 / 47 can be used interchangeably between subframes and slots.

[0059] In the 100 wireless communications system, an electromagnetic (EM) spectrum can be divided, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the 100 wireless communications system can support one or multiple operating frequency bands, such as frequency band designations FR1 (410 MHz - 7.125 GHz), FR2 (24.25 GHz - 52.6 GHz), FR3 (7.125 GHz - 24.25 GHz), FR4 (52.6 GHz - 114.25 GHz), FR4a or FR4-1 (52.6 GHz - 71 GHz) and FR5 (114.25 GHz - 300 GHz). In some implementations, NEs 102 and UEs 104 can perform wireless communications in one or more of the operating frequency bands. In some implementations, FR1 can be used by NEs 102 and UEs 104, among other equipment or devices, for cellular communications traffic (e.g., control information, data).In some implementations, FR2 can be used by network entities 102 and UEs 104, among other equipment or devices for short-range, high-data-rate capabilities.

[0060] FR1 can be associated with one or multiple numerologies (e.g., at least three numerologies). For example, FR1 can be associated with a first numerology (e.g., μ=0), which includes a subcarrier spacing of 15 kHz; a second numerology (e.g., μ=1), which includes a subcarrier spacing of 30 kHz; and a third numerology (e.g., μ=2), which includes a subcarrier spacing of 60 kHz. FR2 can be associated with one or multiple numerologies (e.g., at least 2 numerologies). For example, FR2 can be associated with a third numerology (e.g., μ=2), which includes a subcarrier spacing of 60 kHz; and a fourth numerology (e.g., μ=3), which includes a subcarrier spacing of 120 kHz.

[0061] An NE, for example, a gNB, can configure a set of CSI-RS features, for example, a set of features of Petition 870250088426, dated 09 / 30 / 2025, page 28 / 69 20 / 47 Non-zero power (NZP) CSI-RS for UE, for example, by a Radio Resource Control (RRC) signaling or other signaling, which includes one or more CSI-RS features. The CSI report may be based on the CSI-RS feature. The CSI report may be a CRI report or report at least one report configuration index or report subconfiguration index. The UE will receive the set of CSI-RS features from the NE. Although RAN1#113 has agreed to use port subset indications to determine spatial domain adaptation for the Type 1 case, and each CSI-RS feature is associated with a spatial domain adaptation pattern for the Type 2 case, there are no details on common or separate CRI reporting.It is necessary to define how to determine the association between the port subset indication and the spatial domain adaptation pattern in the case of Type 1, and how to determine the association between the CSI-RS feature and the spatial domain adaptation pattern in the case of Type 2, so that a CSI-RS feature index for CRI reporting can be determined. Similarly, in the cases of Type 1 and Type 2, it is also necessary to define how to determine the association between CMR and IMR to support interference measurement, and how to determine an index of a CSI reporting configuration or CSI reporting subconfiguration for CSI reporting, etc.

[0062] According to aspects of this disclosure, in the case of Type 1, the NE will determine a set of port subset indications for the CSI-RS feature set. A port subset indication may also be called a port subset configuration. NE will indicate one or more port subset indications associated with the CSI-RS feature set or associated with each CSI-RS feature of the CSI-RS feature set, for example, by RRC, MAC CE, or DCI signaling. For example, NE will indicate one or more port subset indications for each feature. Petition 870250088426, dated 09 / 30 / 2025, p. 29 / 69 21 / 47 of the CSI-RS resource set. In this case, the port subset indication is per CSI-RS resource. In another example, the NE will indicate one or more port subset indications for all CSI-RS resources in the CSI-RS resource set. In this case, the port subset indication is per CSI-RS resource set. All CSI-RS resources in the CSI-RS resource set share the same port subset indications.

[0063] The UE will determine the set of port subset indications for the CSI-RS resource set, for example, based on the port subset indications for each CSI-RS resource in the CSI-RS resource set. Each port subset indication in the set of port subset indications will be identified by an index. For example, the port subset indications for the CSI-RS resource set will be indexed sequentially. In some implementations of this disclosure, the port subset indications for each CSI-RS resource are the same. The set of port subset indications for the CSI-RS resource set consists of one or multiple port subset indications for each CSI-RS resource.In some other implementations of this disclosure, the port subset indications for each CSI-RS resource are different, and the set of port subset indications for the CSI-RS resource set includes port subset indications for all CSI-RS resources in the CSI-RS resource set. In this case, the port subset indications for the CSI-RS resource set are the union set of port subset indications for each CSI-RS resource in the CSI-RS resource set.

[0064] According to aspects of this disclosure, in the case of Type 2, NE will indicate a number (hereinafter, the first number) by means of a signal, for example, a signal Petition 870250088426, dated 09 / 30 / 2025, p. 30 / 69 22 / 47 of RRC or other signaling, which is less than the number of CSI-RS features in the CSI-RS feature set. For example, NE will indicate a beam number or a spatial domain adaptation pattern number, which can be used as the number to divide the CSI-RS features of the CSI-RS feature set into one or more CSI-RS feature subsets. For example, if there is a CSI-RS feature set with 6 CSI-RS features and the indicated number is 2, there will be 3 subsets, each containing 2 CSI-RS features. Alternatively, there will be 2 subsets, and each subset will contain 3 CSI-RS features.

[0065] Regarding the CRI report, according to aspects of this disclosure, in the case of Type 1, each port subset indication is associated with a spatial domain adaptation pattern. For example, the first port subset indication in the set of port subset indications for the CSI-RS feature set is associated with the first spatial domain adaptation pattern, and the second port subset configuration is associated with the second spatial adaptation pattern.

[0066] Based on each port subset indication, CSI-RS resource subsets of the CSI-RS resource set will be determined, each CSI-RS resource subset containing at least one CSI-RS resource. The CRI report for each CSI reporting configuration, CSI reporting subconfiguration, or port subset indication will be based on the determined CSI-RS resource subsets. For example, in some implementations of this disclosure, the UE will determine a CSI-RS resource subset for each port subset indication based on the port subset indications for each CSI-RS resource in the CSI-RS resource set. The UE will determine an index of a CSI-RS resource associated with a port subset indication with Petition 870250088426, dated 09 / 30 / 2025, p. 31 / 69 23 / 47 based on a subset of CSI-RS features associated with the port subset indication, which will be used for the CRI report.

[0067] For different CSI-RS features in a subset of CSI-RS features, the different CSI-RS features may correspond to different beams. Because the number of port subset indications for each CSI-RS is the same or different, the number of spatial domain adaptation patterns for each CSI-RS is the same or different. If the number of spatial domain adaptation patterns for different CSI-RS features is different, the number of spatial domain adaptation patterns or the number of port subset indications for the CSI-RS feature set is the largest number, for example, N, of spatial domain adaptation patterns among those for all CSI-RS features in a CSI-RS feature set.

[0068] If the number of port subset indications for each CSI-RS resource is different, the number of CSI-RS resources for each port subset indication may also be different. For example, for a first port subset indication, the associated CSI-RS resources are only part of the CSI-RS resources in the CSI-RS resource set, for example, L. For a second port subset indication, the associated CSI-RS resources contain all the resources in the CSI-RS resource set, for example, N. L is less than N. When determining the number of bits for the CRI report, N will be used. In some implementations of this disclosure, any CSI-RS resources (LN) selected from the L CSI-RS resources will be attached to the corresponding CSI-RS resource (which may also be referred to as the assumed CSI-RS resource or fictitious CSI-RS resource), so that the number of CSI-RS resources is N.In other words, the number of CSI-RS resources corresponding to... Petition 870250088426, dated 09 / 30 / 2025, page 32 / 69 The 24 / 47 spatial adaptation pattern will be N appending (LN) selected CSI-RS features from L CSI-RS features to the corresponding spatial domain adaptation pattern. Regarding assumed or fictitious CSI-RS feature or similar, it means that the CSI-RS feature is simply assumed to be added to the existing L CSI-RS feature, which is not actually used for the corresponding CRI report. In some implementations of this disclosure, in the case of adopting separate CRI reports for different CSI reporting configurations corresponding to different spatial domain adaptation patterns or different port subset indications, the indicated CRI is associated only with the CSI-RS feature within the corresponding CSI-RS features for a corresponding port subset indication.

[0069] Figure 2 is an example of the association between spatial domain adaptation patterns and CSI-RS features in the case of Type 1, according to the aspect of the present disclosure.

[0070] Referring to Figure 2, it is assumed that three port subset indications (not shown) are determined for a CSI-RS feature set configuration for UE, which are indexed sequentially and indicate, respectively, three spatial domain adaptation patterns, for example, spatial domain adaptation pattern #0, spatial domain adaptation pattern #1, and spatial domain adaptation pattern #2. A CSI-RS feature subset of the CSI-RS feature set includes three NZP CSI-RS features, for example, CSI-RS #0, CSI-RS #1, and CSI-RS #2. Furthermore, it is assumed that there are two port subset indications configured for each of CSI-RS #0 and CSI-RS #1, where the two port subset indications indicate two spatial domain adaptation patterns #0 and spatial domain adaptation patterns #1 for each of CSI-RS #0 and CSI-RS #1.It is also assumed that there are 3 indications of a subset of ports configured for CSI-RS #2, where all three... Petition 870250088426, dated 09 / 30 / 2025, p. 33 / 69 25 / 47 port subset indications indicate the three spatial domain adaptation patterns, for example, spatial domain adaptation pattern #0, spatial domain adaptation pattern #1, and spatial domain adaptation pattern #2 for CSI-RS #2. The largest number of spatial domain adaptation patterns among those for each CSI-RS feature in the CSI-RS feature subset is 3. Therefore, the number of spatial domain adaptation patterns for the CSI-RS feature subset is 3. Since there are only two actual spatial domain adaptation patterns for CSI-RS #0 and CSI-RS #1, one spatial domain adaptation pattern, for example, spatial domain adaptation pattern #2, will be assumed to be attached to the spatial domain adaptation patterns for each of CSI-RS #0 and CSI-RS #1.Any of the three CSI-RS features can be the selected CRI for spatial domain adaptation pattern #0 and spatial domain adaptation pattern #1, while only CSI-RS #2 can be the selected CRI for spatial domain adaptation pattern #2 because it is not a true match for spatial domain adaptation pattern #0 and spatial domain adaptation pattern #1.

[0071] According to aspects of this disclosure, in the case of Type 2, each CSI-RS feature is associated with a spatial domain adaptation pattern. Several CSI-RS features may be associated with the same spatial domain adaptation pattern, and the several CSI-RS features associated with the same spatial domain adaptation pattern may be associated with different beams.

[0072] To keep setup and reporting simple, in accordance with aspects of this disclosure, the number of spatial domain patterns for each beam is the same, and meanwhile, the number of beams for each spatial domain adaptation pattern is also the same. For example, the CSI-RS features in the CSI-RS feature set are equalized and Petition 870250088426, dated 09 / 30 / 2025, page 34 / 69 26 / 47 divided into several CSI-RS subsets. In some implementations of this disclosure, the UE will determine several CSI-RS feature subsets by dividing the CSI-RS feature set by the first number, for example, the number of beams or the number of spatial domain adaptation patterns. The NE will set the number of beams, or the number of spatial domain adaptation patterns, or both, for the UE's CSI-RS feature set. The number of beams for different spatial domain adaptation patterns may be the same or different. The larger number of beams indicated (which may be the same) among those for different spatial domain adaptation patterns will be considered the number of CSI-RS features in each of the multiple CSI-RS feature subsets. The number of spatial domain adaptation patterns for different beams may also be the same or different.The largest indicated number of spatial domain adaptation patterns (which may be the same) for different beams will be considered the number of multiple CSI-RS feature subsets. Therefore, the technical solutions applied in the Type 2 case will be similar to those applied in the Type 1 case, where the port subset indications will be replaced by CSI-RS indices in the corresponding CSI-RS feature subset.

[0073] For the Type 2 case, the CRI report will be based on a subset of CSI-RS associated with a spatial adaptation pattern. A CSI-RS feature within the CSI-RS subset or in the original CSI-RS feature set may be considered the CRI.

[0074] In some implementations of this disclosure (Scheme 1), the CSI-RS features in a subset of CSI-RS features are associated with the same CSI reporting configuration or CSI reporting subconfiguration. Each subset of CSI-RS features is associated with a spatial domain adaptation pattern. The number of beams for different patterns of Petition 870250088426, dated 09 / 30 / 2025, p. 35 / 69 27 / 47 spatial domain adaptation is the same or different. If the number of beams for different spatial domain adaptation patterns is different, the largest number of beams for spatial domain adaptation patterns will be used to determine the CSI-RS feature subsets. The mapping between CSI-RS features, beams, and spatial domain adaptation patterns is done first with the beam and then with the spatial domain adaptation pattern (also known as the first beam mapping order). That is, CSI-RS features will first be mapped to beams and then to spatial domain adaptation patterns. The UE will select or determine a CSI-RS feature index to be reported from the CSI-RS feature subset. That is, the UE will determine the CRI based on an associated CSI-RS feature subset.

[0075] In some other implementations of this disclosure (Scheme 2), CSI-RS features in a subset of CSI-RS features are associated with different CSI reporting configurations or CSI reporting subconfigurations. Each subset of CSI-RS features is associated with a beam. The number of spatial domain adaptation patterns for different beams is either the same or different. If the number of spatial domain adaptation patterns for different beams is different, the largest number of spatial domain adaptation patterns for beams will be used to determine the bit size for spatial adaptation pattern indication. The mapping between CSI-RS features, beams, and spatial domain adaptation patterns is done first with the spatial domain adaptation pattern and then with the beam (also known as spatial domain adaptation pattern first mapping order).The UE will determine multiple CSI-RS resource groups from the CSI-RS resource pool based on the association between the CSI-RS resource and the configuration. Petition 870250088426, dated 09 / 30 / 2025, pp. 36 / 69 28 / 47 CSI reporting subconfiguration, where the CSI-RS resources in each of the multiple CSI-RS resource groups are associated with the same CSI reporting configuration or subconfiguration. The UE will determine or select a CSI-RS resource group index to be reported from the multiple CSI-RS resource groups. That is, the UE will determine the CSI reporting configuration index or the CSI reporting subconfiguration index based on an associated CSI-RS resource group.

[0076] The mapping order, for example, beam first or spatial domain adaptation pattern first, will be configured for the UE by the NE, for example, by a gNB, or will be predefined in the specification or protocol. Based on the mapping order, the UE can determine whether Scheme 1 or Scheme 2 will be adopted for CRI reporting in the case of Type 2.

[0077] Regarding interference measurement (IM), the features for channel measurement and interference measurement are associated in terms of features. For example, the first channel measurement feature and the first interference measurement feature are associated to determine the first CSI, or channel quality indicator (CQI), pre-coding matrix indicator (PMI), classification indicator (RI), etc.). RAN1#113 agreed on the configurability of NZP CSI-RS feature support(s) for channel measurement within a feature configuration corresponding to more than one spatial adaptation pattern with at least one of revised A1-1 and revised A1-2. According to revised A1-1, a feature set with multiple features is configured within a feature configuration, where each feature is associated with only one spatial adaptation pattern.According to the revised A1-2, for a feature configured in a feature set within a feature configuration, the feature can be associated with more than one spatial adaptation pattern. One or more features can be configured. Petition 870250088426, dated 09 / 30 / 2025, page 37 / 69 29 / 47 in the feature set for channel measurement.

[0078] The network side, for example, a gNB, will indicate an IMR set to the UE, for example, via an RRC signal or other signal. In this document, it is assumed that the CSI-RS resource set configured for the UE is used for channel measurement. That is, the CSIRS resources in the CSI-RS resource set are channel measurement resources.

[0079] According to aspects of this disclosure, in the case of Type 1, different indications of subsets of ports associated with the same CSI-RS feature are used to represent different spatial domain adaptation patterns. The relationship or association between channel measurement features and interference measurement features will be updated based on legacy technology.

[0080] For example, in some implementations of this disclosure, the number of CMRs is equal to the number of IMRs, which in turn is equal to the number of CSI-RS resources in the CSI-RS resource pool. Each port subset indication associated with the same CSI-RS resource is associated with the same IMR. Thus, one or more port subset indications are associated with the same IMR. The UE will determine an IMR associated with a port subset indication based on a CSI-RS resource associated with the IMR.

[0081] In some other implementations of this disclosure, the number of IMRs in the IMR set is determined based on the number of CSI-RS resources in the CSI-RS resource set and the largest (which may be the same) number of port subset indications among the port subset indications for each CSI-RS resource in the CSI-RS resource set. For example, in the case of the same number of port subset indications for each CSI-RS resource, the number of IMRs in the IMR set is the product of multiplying the number Petition 870250088426, dated 09 / 30 / 2025, pp. 38 / 69 30 / 47 of CSI-RS resources in the CSI-RS resource set multiplied by the number of port subset indications. In the case of different port subset indication numbers for different CSI-RS resources, the number of IMRs in the IMR set is the product of multiplying the number of CSI-RS resources in the CSI-RS resource set by the highest port subset indication number for all CSI-RS resources in the CSI-RS resource set. The UE will determine an index of the IMR associated with a port subset indication based on the index of the associated port subset indication and an index of the associated CSI-RS resource. Furthermore, a one-to-one mapping will be maintained between the port subset indication and the IMR.

[0082] Figure 3 is an example of the association between spatial domain adaptation pattern, IMR and CMR in the case of Type 1, according to the aspect of the present disclosure.

[0083] Referring to Figure 3, it is assumed that the number of CMRs is the same as the number of IMRs, which is the same as the number of CSI-RS resources in the CSI-RS resource set. Port subset indications associated with each CSI-RS resource will also be associated with the corresponding IMR. For example, there are three CSI-RS resources in the CSI-RS set, for example, CSI-RS#0, CSI-RS#1, and CSI-RS#2, and there are three IMRs in the IMR set, for example, IMR#0 associated with CSI#0, IMR#1 associated with CSI#1, and IMR#2 associated with CSI#2. Port subset indications #0 of CSI-RS#0 will be associated with IMR#0. Port subset indications #1 of CSI-RS#0 will be associated with IMR#0. CSI-RS #1 port subset #0 indications will be associated with IMR #1. CSI-RS #1 port subset #1 indications will be associated with IMR #1. CSI-RS #2 port subset #2 indication will be associated with IMR #2.Different indications of a subset of ports associated with the same CSI-RS feature are. Petition 870250088426, dated 09 / 30 / 2025, pp. 39 / 69 31 / 47 used to represent different spatial domain adaptation patterns associated with the same CSI-RS feature.

[0084] In the case of Type 2, the mapping between beam, spatial domain adaptation pattern, and CSI-RS feature will impact the association between channel measurement feature and interference measurement feature. According to aspects of this disclosure, the number of IMRs in the IMR set will be equal to the number of CSI-RS features in the CSI-RS feature set, or to the number of CSI-RS feature subsets determined by dividing the CSI-RS feature set by the first number, if the first number is the number of CSI-RS features in each CSI-RS feature subset, or by the number of CSI-RS features in a CSI-RS feature subset, if the first number is the number of CSI-RS feature subsets.Similarly, the number of CSI-RS features in a subset of CSI-RS features may correspond to the number of beams, and the number of CSI-RS feature subsets may correspond to the number of spatial domain adaptation patterns. CSI-RS features from a subset of CSI-RS features are associated with the same IMR. The UE will determine an index for each CSI-RS feature from a subset of CSI-RS features to identify the CSI-RS feature within the subset of CSI-RS features based on the order of the CSI-RS feature within the subset of CSI-RS features. Then, the UE will determine the IMR associated with each CSI-RS feature from the subset of CSI-RS features based on the determined index.

[0085] For example, the number of CSI-RS features in the CSI-RS feature set is L, for example, 6, the number of beams is M, for example, 2, and the number of spatial adaptation patterns is N, for example, 3, where L = M * N. Similarly, the mapping order between the CSI-RS feature, the beam, and the spatial domain adaptation pattern can be beam first or spatial domain adaptation pattern first. Petition 870250088426, dated 09 / 30 / 2025, page 40 / 69 32 / 47

[0086] In some implementations of this disclosure, the number of IMRs is L. The number of CMRs is also L. CMRs and IMRs are feature-associated. The mapping order for CMRs and IMRs is the same, for example, beam-first or spatial domain adaptation pattern-first.

[0087] In some other implementations of the present disclosure, the number of IMRs is M. In the case of a beam-first mapping order, the IMR feature index, for example, J for a CMR (e.g., a CSI-RS) with an index, for example, K is determined as: J(K)=K mod N. In the case of a spatial domain-first adaptation mapping order, the IMR feature index J for a CMR with an index K is determined as: J(K)= K / N.

[0088] In some other implementations of the present disclosure, the number of IMRs is N. In the case of a beam-first mapping order, the IMR feature index, for example, J for a CMR with an index, for example, K, is determined as: J(K) = K / M. In the case of a spatial domain adaptation pattern-first mapping order, the IMR feature index, for example, J for a CMR with an index, for example, K, is determined as: J(K) = K mod M.

[0089] Figure 4 is an example of the association between spatial domain adaptation pattern, IMR and CMR in the case of Type 2, according to the aspect of the present disclosure.

[0090] Referring to Figure 4, it is assumed that there are 6 CMRs, for example, 6 CSI-RS features in the CSI-RS feature set, for example, CSI-RS#0 to CSI-RS#5, two IMRs in the IMR set, for example, IMR#0 and IMR#1, two beams and three spatial domain adaptation patterns, for example, pattern#0, pattern#1 and pattern#2. That is, the IMR number in the IMR set is the same as the beam number. It is also assumed that the mapping order is beam first. Then, the 6 CSI-RS features will be mapped to the two beams first, for example, CSI-RS #0 Petition 870250088426, dated 09 / 30 / 2025, p. 41 / 69 33 / 47 being mapped to the first beam, CSI-RS#1 being mapped to the second beam, CSI-RS#2 being mapped to the first beam, CSI-RS#3 being mapped to the second beam, CSI-RS#4 being mapped to the first beam, and CSI-RS#5 being mapped to the second beam. There are two CSI-RS feature subsets based on the two beams, each corresponding to an IMR. Then, the first of each subset is mapped to the first spatial domain adaptation pattern, for example, pattern#0, the second of each subset is mapped to the second spatial domain adaptation pattern, for example, pattern#1, and so on. Consequently, CSI-RS#0 and CSI-RS#1 are mapped to pattern#0, CSI-RS#2 and CSI-RS#3 are mapped to pattern#1, and CSI-RS#4 and CSI-RS#5 are mapped to pattern#1. The resources of CSI-RS#0, CSI-RS#2, and CSI-RS#4 will be associated with IMR#0, and the resources of CSI-RS#1, CSI-RS#3, and CSI-RS#5 will be associated with IMR#1.

[0091] Figure 5 is also an example of the association between spatial domain adaptation pattern, IMR and CMR in the case of Type 2, according to the aspect of the present disclosure.

[0092] Referring to Figure 5, similarly, it is assumed that there are 6 CMRs, for example, 6 CSI-RS features in the CSI-RS feature set, for example, CSI-RS#0 to CSI-RS#5, two IMRs in the IMR set, for example, IMR#0 and IMR#1, two beams and three spatial domain adaptation patterns, for example, pattern#0, pattern#1 and pattern#2. That is, the number of IMRs in the IMR set is the same as the number of beams. However, it is assumed that the mapping order is spatial domain adaptation pattern first. Therefore, the 6 CSI-RS features will be mapped to the three spatial domain adaptation patterns first, for example, CSI-RS#0 being mapped to pattern#0, CSI-RS#1 being mapped to pattern#1, CSI-RS#2 being mapped to pattern#2, CSI-RS#3 being mapped to pattern#0, CSI-RS#4 being mapped to pattern#1, and CSI-RS#5 being mapped to pattern#2. Petition 870250088426, dated 09 / 30 / 2025, page 42 / 69 34 / 47 Pattern #2. There are two CSI-RS feature subsets based on the two beams, each corresponding to an IMR. The first subset, including the first three CSI-RS features mapped to the three spatial domain adaptation patterns, will be mapped to the first beam, and the second subset, including the second three CSI-RS features mapped to the three spatial domain adaptation patterns, will be mapped to the second beam. Consequently, CSI-RS #0, CSI-RS #1, and CSI #2 are mapped to the first beam and correspond to IMR #0, and CSI-RS #3, CSI-RS #4, and CSI #5 are mapped to the second beam and correspond to IMR #1.

[0093] Furthermore, with regard to CSI reporting, it was agreed that UE reporting would be configured (or selected) on the network side (e.g., UE reporting configured for gNB) for one or more CSI reporting configurations or sub-configurations. However, it has not yet been agreed how to index one or more CSI reporting configurations / sub-configurations and / or spatial domain adaptation patterns.

[0094] For example, according to aspects of this disclosure, the network side may indicate the number of CSI reporting configurations or CSI reporting subconfigurations to the UE, for example, by means of an RRC signal or other signal. The UE will transmit indices of one or more CSI reporting configurations or CSI reporting subconfigurations based on the number. In the case of Type 1, each index is associated with a port subset indication. In the case of Type 2, based on whether the mapping order is beam-first or spatial domain adaptation-first, as mentioned earlier in Schemes 1 and 2, the CSIRS feature associated with each beam can be determined. For example, each CSI reporting configuration index is based on a subset index in the case of a beam-first mapping order or on a group index in the case of a beam-first order. Petition 870250088426, dated 09 / 30 / 2025, page 43 / 69 35 / 47 spatial domain adaptation pattern mapping first.

[0095] In addition to the CSI reporting configurations selected by the gNB to be reported, in accordance with aspects of this disclosure, the UE will select the CSI reporting configurations or sub-configurations to be reported. For example, a gNB will configure the UE to report metrics for a number, for example, P of CSI reporting configurations or sub-configurations. The reporting metric may be CQI, PMI, RI, or LI. The UE will select the best P CSI reporting configurations or sub-configurations to report to the NE. For example, the UE may judge whether a CSI reporting configuration is good or not based on RI or CQI. The UE will report metrics for the selected P CSI reporting configurations or sub-configurations and indices of the selected P CSI reporting configurations or sub-configurations.

[0096] Although the above implementations of this disclosure are illustrated primarily in view of UE operations, persons skilled in the art would be well acquainted with consistent network-side operations based on UE operations and, therefore, similar or identical network-side operations will not be replicated.

[0097] Figure 6 illustrates an example of a UE 600 according to aspects of this disclosure. The UE 600 may include a processor 602, a memory 604, a controller 606, and a transceiver 608. The processor 602, the memory 604, the controller 606, or the transceiver 608, or various combinations thereof or various components thereof, may be examples of means of carrying out various aspects of this disclosure as described in this document. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) by means of one or more interfaces.

[0098] The processor 602, the memory 604, the controller 606 or Petition 870250088426, dated 09 / 30 / 2025, page 44 / 69 36 / 47 The 608 transceiver, or various combinations or components thereof, may be implemented in hardware (e.g., circuit assembly). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in this disclosure.

[0099] The 602 processor may include an intelligent hardware device (for example, a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the 602 processor may be configured to operate memory 604. In other implementations, memory 604 may be integrated into the 602 processor. The 602 processor may be configured to execute computer-readable instructions stored in memory 604 to enable the UE 600 to perform various functions of this disclosure.

[00100] Memory 604 may include volatile or non-volatile memory. Memory 604 may store computer-readable and computer-executable code, including instructions that, when executed by processor 602, cause UE 600 to perform various functions described in this document. The code may be stored on a non-transient computer-readable medium, such as memory 604 or another type of memory. Computer-readable media include both non-transient storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. A non-transient storage medium may be any available medium that can be accessed by a general-purpose or specific-purpose computer.

[00101] In some implementations, the 602 processor and the 604 memory coupled to the 602 processor can be configured to make the UE 600 perform one or more of the functions described. Petition 870250088426, dated 09 / 30 / 2025, pp. 45 / 69 37 / 47 in this document (for example, executing, by processor 602, instructions stored in memory 604). For example, processor 602 can support wireless communication on UE 600, according to the examples disclosed in this document. UE 600 can be configured to support a means of receiving a first signal indicating a set of CSI-RS features; a means of receiving a second signal indicating one or more indications of a subset of ports associated with the set of CSI-RS features or indicating a first number less than a number of CSI-RS features in the set of CSI-RS features; and a means of determining, based on the first signal and the second signal, an index of a CSI-RS feature for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof.

[00102] The 606 controller can manage input and output signals for the UE 600. The 606 controller can also manage peripherals not integrated into the UE 600. In some implementations, the 606 controller may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the 606 controller may be implemented as part of the 602 processor.

[00103] In some implementations, the UE 600 may include at least one 608 transceiver. In some other implementations, the UE 600 may have more than one 608 transceiver. The 608 transceiver may represent a wireless transceiver. The 608 transceiver may include one or more 610 receiver chains, one or more 612 transmitter chains, or a combination thereof.

[00104] A 610 receiver chain can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, the 610 receiver chain may include one or more antennas to receive the signal over the air or wirelessly. The 610 receiver chain may Petition 870250088426, dated 09 / 30 / 2025, pp. 46 / 69 38 / 47 include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The 610 receiver chain may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by inverting the modulation technique applied during signal transmission. The 610 receiver chain may include at least one decoder to decode and process the demodulated signal to receive the transmitted data.

[00105] A 612 transmitter chain can be configured to generate and transmit signals (e.g., control information, data, packets). The 612 transmitter chain may include at least one modulator to modulate data into a carrier signal, preparing the signal for wireless transmission. The at least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes, such as phase-shift keying (PSK) or quadrature amplitude modulation (QAM). The 612 transmitter chain may also include at least one power amplifier configured to amplify the modulated signal to a power level appropriate for wireless transmission. The 612 transmitter chain may also include one or more antennas to transmit the amplified signal into the air or wirelessly.

[00106] Figure 7 illustrates an example of a 700 processor according to aspects of the present disclosure. The 700 processor may be an example of a processor configured to perform various operations according to the examples described in this document. The 700 processor may include a 702 controller configured to perform various operations according to the examples described in this document. The 700 processor may optionally include at least one 704 memory, which may be, for example, an L1 / L2 / L3 cache. Additionally, or alternatively, the 700 processor may optionally include Petition 870250088426, dated 09 / 30 / 2025, pp. 47 / 69 39 / 47 one or more arithmetic logic units (ALUs) 706. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) by means of one or more interfaces (e.g., buses).

[00107] The 700 processor may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receive, get, retrieve, transmit, send, forward, store, determine, identify, access, write, read) as described in this document. The processor chipset may include one or more cores, one or more caches (e.g., local memory or memory included in the processor chipset (e.g., the 700 processor) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase-change memory (PCM), and others).

[00108] Controller 702 can be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of processor 700 to enable processor 700 to support various operations, as described in this document. For example, controller 702 can operate as a control unit for processor 700, generating control signals that manage the operation of various components of processor 700. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating the timing of operations. Petition 870250088426, dated 09 / 30 / 2025, pp. 48 / 69 40 / 47

[00109] Controller 702 can be configured to fetch (e.g., get, retrieve, receive) instructions from memory 704 and determine the subsequent instruction(s) to be executed to enable processor 700 to support various operations as described in this document. Controller 702 can be configured to track the memory address of instructions associated with memory 704. Controller 702 can be configured to decode instructions to determine the operation to be performed and the operands involved. For example, controller 702 can be configured to interpret the instruction and determine the control signals to be sent to other components of processor 700 to enable processor 700 to support various operations as described in this document. Additionally, or alternatively, controller 702 can be configured to manage the data flow within processor 700.The 702 controller can be configured to control data transfer between registers, arithmetic logic units (ALUs), and other functional units of the 700 processor.

[00110] 704 memory may include one or more caches (e.g., local memory or memory included in the 700 processor or other memory such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.). In some implementations, 704 memory may reside within or on a processor chipset (e.g., local to the 700 processor). In some other implementations, 704 memory may reside externally to the processor chipset (e.g., remote to the 700 processor).

[00111] Memory 704 can store computer-readable and computer-executable code, including instructions that, when executed by processor 700, cause processor 700 to perform various functions described in this document. The code can be stored on a non-transient, computer-readable medium. Petition 870250088426, dated 09 / 30 / 2025, pp. 49 / 69 41 / 47 computer, such as system memory or other types of memory. The 702 controller and / or the 700 processor can be configured to execute computer-readable instructions stored in memory 704, causing the 700 processor to perform various functions. For example, the 700 processor and / or the 702 controller can be coupled to memory 704 or to memory 704; the 700 processor, the 702 controller, and memory 704 can be configured to perform various functions described in this document. In some examples, the 700 processor may include multiple processors and memory 704 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described in this document.

[00112] One or more 706 ALUs can be configured to support various operations, as described in this document. In some implementations, one or more 706 ALUs may reside within or on a processor chipset (e.g., the 700 processor). In some other implementations, one or more 706 ALUs may reside externally to the processor chipset (e.g., the 700 processor). One or more 706 ALUs can perform one or more calculations, such as addition, subtraction, multiplication, and division, on data. For example, one or more 706 ALUs can receive input operands and an operation code, which determines an operation to be performed. One or more 706 ALUs can be configured with a variety of logic and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation.Additionally, or alternatively, one or more 706 ALUs can support logical operations such as AND, OR, XOR, NOR, and NAND, allowing one or more 706 ALUs to handle conditional operations, comparisons, and bitwise operations. Petition 870250088426, dated 09 / 30 / 2025, pp. 50 / 69 42 / 47

[00113] The 700 processor can support wireless communication according to the examples disclosed in this document. The 700 processor can be configured or operable to support a means of receiving a first signal indicating a CSI-RS feature set; a means of receiving a second signal indicating one or more indications of a subset of ports associated with the CSI-RS feature set or indicating a first number less than a number of CSI-RS features in the CSI-RS feature set; and a means of determining, based on the first signal and the second signal, an index of a CSI-RS feature for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof.

[00114] Figure 8 illustrates an example of an NE 800 according to aspects of the present disclosure. The NE 800 may include a processor 802, a memory 804, a controller 806, and a transceiver 808. The processor 802, the memory 804, the controller 806, or the transceiver 808, or various combinations thereof, or various components thereof, may be examples of means for carrying out various aspects of the present disclosure as described in this document. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) by means of one or more interfaces.

[00115] The 802 processor, the 804 memory, the 806 controller, or the 808 transceiver, or various combinations or components thereof, may be implemented in hardware (e.g., a circuit assembly). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in this disclosure. Petition 870250088426, dated 09 / 30 / 2025, pp. 51 / 69 43 / 47

[00116] The 802 processor may include an intelligent hardware device (for example, a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the 802 processor may be configured to operate the 804 memory. In other implementations, the 804 memory may be integrated into the 802 processor. The 802 processor may be configured to execute computer-readable instructions stored in the 804 memory to enable the NE 800 to perform various functions of this disclosure.

[00117] 804 memory may include volatile or non-volatile memory. 804 memory may store computer-readable and computer-executable code, including instructions that, when executed by the 802 processor, cause the NE 800 to perform various functions described in this document. The code may be stored on a non-transient computer-readable medium, such as 804 memory or another type of memory. Computer-readable media include both non-transient storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. A non-transient storage medium may be any available medium that can be accessed by a general-purpose or specific-purpose computer.

[00118] In some implementations, the 802 processor and the 804 memory coupled to the 802 processor can be configured to make the NE 800 perform one or more of the functions described in this document (for example, executing instructions stored in memory 804 by the 802 processor). For example, the 802 processor can support wireless communication on the NE 800, according to the examples disclosed in this document. The NE 800 can be configured to support a means of receiving a first signal indicating a set of CSI-RS features; a means of receiving a second signal indicating one or more indications of a subset of ports associated with the set of Petition 870250088426, dated 09 / 30 / 2025, pp. 52 / 69 44 / 47 CSI-RS resources or indicating a first number less than a number of CSI-RS resources in the CSI-RS resource set; and means to determine, based on the first signaling and the second signaling, an index of a CSI-RS resource for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof.

[00119] The 806 controller can manage input and output signals for the NE 800. The 806 controller can also manage peripherals not integrated into the NE 800. In some implementations, the 806 controller may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the 806 controller may be implemented as part of the 802 processor.

[00120] In some implementations, the NE 800 may include at least one 808 transceiver. In other implementations, the NE 800 may have more than one 808 transceiver. The 808 transceiver may represent a wireless transceiver. The 808 transceiver may include one or more 810 receiver chains, one or more 812 transmitter chains, or a combination thereof.

[00121] An 810 receiver chain can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, the 810 receiver chain may include one or more antennas to receive the signal over the air or wirelessly. The 810 receiver chain may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The 810 receiver chain may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by inverting the modulation technique applied during signal transmission. The 810 receiver chain may include at least one decoder to decode and process the demodulated signal to receive the transmitted data. Petition 870250088426, dated 09 / 30 / 2025, pp. 53 / 69 45 / 47

[00122] An 812 transmitter chain can be configured to generate and transmit signals (e.g., control information, data, packets). The 812 transmitter chain may include at least one modulator to modulate data into a carrier signal, preparing the signal for wireless transmission. The at least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes, such as phase-shift keying (PSK) or quadrature amplitude modulation (QAM). The 812 transmitter chain may also include at least one power amplifier configured to amplify the modulated signal to a power level appropriate for wireless transmission. The 812 transmitter chain may also include one or more antennas to transmit the amplified signal into the air or wirelessly.

[00123] Figure 9 illustrates a flowchart of a method according to aspects of this disclosure. The method operations can be implemented by a UE as described in this document. In some implementations, the UE may perform a set of instructions to control the UE's functional elements to perform the described functions.

[00124] In 902, the method may include receiving an initial signal indicating a set of CSI-RS features. 902 operations can be performed according to the examples described in this document. In some implementations, aspects of 902 operations may be performed by a UE, as described with reference to Figure 6.

[00125] In 904, the method may include receiving a second signal indicating one or more subset indications of ports associated with the CSI-RS resource set or indicating a first number less than a CSI-RS resource number in the CSI-RS resource set. 904 operations may be performed according to the examples described in this document. Petition 870250088426, dated 09 / 30 / 2025, pp. 54 / 69 46 / 47 In some implementations, aspects of the 904 operations can be performed by a UE, as described with reference to Figure 6.

[00126] In 906, the method may include determining, based on the first signaling and the second signaling, an index of a CSI-RS resource for CRI reporting, an association between CMR and IMR, an index of a CSI reporting configuration, or any combination thereof. 906 operations may be performed according to the examples described in this document. In some implementations, aspects of 906 operations may be performed by a UE, as described with reference to Figure 6.

[00127] It should be noted that the method described in this document describes one possible implementation, and that the operations and steps may be rearranged or modified in other ways and that other implementations are possible.

[00128] Figure 10 illustrates a flowchart of a method according to aspects of this disclosure. The method operations can be implemented by a NE, as described in this document. In some implementations, the NE may execute a set of instructions to control the NE's functional elements to perform the described functions.

[00129] In 1002, the method may include transmitting an initial signal indicating a set of CSI-RS features. 1002 operations can be performed according to the examples described in this document. In some implementations, aspects of 1002 operations may be performed by a NE, as described with reference to Figure 8.

[00130] In 1004, the method may include transmitting a second signal indicating one or more subset indications of ports associated with the CSI-RS resource set or indicating a first number less than a number of CSI-RS resources in the CSI-RS resource set. 1004 operations may be Petition 870250088426, dated 09 / 30 / 2025, pp. 55 / 69 47 / 47 performed according to the examples described in this document. In some implementations, aspects of the 1004 operations may be performed by a NE, as described with reference to Figure 8.

[00131] In 1006, the method may include determining an index of a CRI report, an association between CMR and IMR, an index of a CSI report configuration, or any combination thereof, based on the CSI-RS feature set and indications of one or multiple port subsets or the first number. 1006 operations may be performed according to the examples described in this document. In some implementations, aspects of 1006 operations may be performed by a NE, as described with reference to Figure 8.

[00132] It should be noted that the method described in this document describes one possible implementation, and that the operations and steps may be rearranged or modified in other ways and that other implementations are possible.

[00133] The description in this document is provided to enable a person of ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person of ordinary skill in the art, and the generic principles set forth in this document may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described in this document, but should be given the broader scope consistent with the principles and new features disclosed in this document. Petition 870250088426, dated 09 / 30 / 2025, pp. 56 / 69

Claims

1 / 6 CLAIMS 1. User equipment (UE) for wireless communication, characterized in that it comprises: at least one memory; and at least one processor coupled with the at least one memory and configured to make the UE: receive a first signal indicating a set of channel state information (CSI) reference signal (RS) features (CSI-RS); receive a second signal indicating one or more indications of a subset of ports associated with the CSI-RS feature set or indicating a first number less than a number of CSI-RS features in the CSI-RS feature set; and determine, based on the first signal and the second signal, an index of a CSI-RS feature for CSI-RS feature indicator reporting (CRI), an association between channel measurement feature (CMR) and interference measurement feature (IMR), an index of a CSI reporting configuration, or any combination thereof.

2. UE, according to claim 1, characterized in that at least one processor is configured to do the UE: determine a set of port subset indications for the CSI-RS feature set based on port subset indications for each CSI-RS feature in the CSI-RS feature set, wherein each port subset indication of the port subset indication set is identified by an index.

3. UE, according to claim 1, characterized in that at least one processor is configured to perform the UE: determine a subset of CSI-RS resources from the CSI-RS resource set for each port subset indication based on the port subset indications for each CSI-RS resource from the CSI-RS resource set; and determine an index of a CSI-RS resource associated with a port subset indication based on a CSI-RS resource subset associated with the port subset indication to be reported.

4. UE, according to claim 1, characterized in that at least one processor is configured to perform the UE: determine one or multiple CSIRS feature subsets by dividing the CSIRS feature set by the first number, wherein the number of CSIRS features in each of the one or multiple CSIRS feature subsets is equal to the first number, or the number of one or more CSIRS feature subsets is equal to the first number.

5. EU, according to claim 4, characterized in that, CSI-RS resources in a subset of CSI-RS resources are associated with the same CSI reporting configuration or with different CSI reporting configurations.

6. UE, according to claim 5, characterized in that, in the case where CSI-RS resources in a subset of CSI-RS resources are associated with the same CSI reporting configuration, at least one processor is configured to have the UE determine an index n of a CSI-RS resource in the subset of CSI-RS resources to be reported.

7. UE, according to claim 6, characterized in that, in the case of CSI-RS resources in a subset of CSI-RS resources being associated with different CSI reporting configurations, at least one processor is configured to have the UE determine multiple groups of CSI-RS resources from the set of CSI-RS resources based on an association between the CSI-RS resource and the CSI reporting configuration, wherein, CSI-RS resources in each of the multiple groups of CSI-RS resources are associated with the same CSI reporting configuration.

8. UE, according to claim 1, characterized in that at least one processor is configured to make the UE receive a third signal indicating an IMR set, and the CSI-RS feature set indicated by the first signal is for channel measurement.

9. A UE, according to claim 8, characterized in that the number of IMRs in the IMR set is the same as the number of CSI-RS features in the CSIRS feature set, and the indications of one or multiple port subsets are associated with the same IMR.

10. UE, according to claim 9, characterized in that at least one processor is configured to make the UE determine an IMR associated with a port subset indication based on a CSI-RS feature associated with the IMR.

11. UE, according to claim 8, characterized in that a number of IMRs in the IMR set is determined based on the number of CSI-RS resources in the CSI-RS resource set and a greater number of port subset indications among those of port subset indications for each CSI-RS resource in the CSI-RS resource set.

12. EU, according to claim 11, characterized in that the numbers of port subset indications for different CSI-RS resources in the CSI-RS resource set are the same or different.

13. UE, according to claim 11, characterized in that at least one processor is configured to make the UE determine an IMR index associated with a port subset indication based on an index of the associated CSIRS feature and an index of the associated port subset indication.

14. EU, according to claim 8, characterized in that a number of IMRs in the set of IMRs is equal to the Petition 870250088426, dated 09 / 30 / 2025, page 59 / 69 4 / 6 number of CSI-RS resources in the set of CSI-RS resources, a number of CSI-RS resource subsets determined by dividing the set of CSI-RS resources by the first number, or a number of CSI-RS resources in a subset of CSI-RS resources.

15. UE, according to claim 14, characterized in that at least one processor is configured to perform the UE: determine an index for each CSI-RS feature of a subset of CSI-RS features to identify the CSI-RS feature within the subset of CSI-RS features based on an order of the CSI-RS feature within the subset of CSI-RS features; and determine the IMR associated with each CSI-RS feature of the subset of CSI-RS features based on the index.

16. UE, according to claim 5, characterized in that at least one processor is configured to make the UE: receive a third signal indicating a series of CSI report configurations; and transmit indexes of one or more CSI report configurations based on the number of CSI report configurations, wherein each CSI report configuration index is based on a subset index.

17. UE, according to claim 7, characterized in that at least one processor is configured to make the UE: receive a third signal indicating a series of CSI report configurations; and transmit indexes of one or more CSI report configurations based on the number of CSI report configurations, wherein each CSI report configuration index is based on a group index. Petition 870250088426, dated 09 / 30 / 2025, pp. 60 / 69 5 / 6 18. Processor for wireless communication, characterized in that it comprises: at least one controller coupled to at least one memory and configured to make the at least one processor: receive a first signal indicating a set of channel state information (CSI) reference signal (RS) resources (CSI-RS); receive a second signal indicating one or more indications of a subset of ports associated with the set of CSI-RS resources or indicating a first number less than a number of CSI-RS resources in the set of CSI-RS resources; and determine, based on the first and second signals, an index of a CSI-RS resource for CSI-RS resource indicator reporting (CRI), an association between channel measurement resource (CMR) and interference measurement resource (IMR), an index of a CSI reporting configuration, or any combination thereof.

19. Network equipment (NE) for wireless communication, characterized in that it comprises: at least one memory; and at least one processor coupled to at least one memory and configured to make the RAN node: transmit a first signal indicating a set of Channel State Information (CSI) Reference Signal (RS) resource sets (CSI-RS); transmit a second signal indicating one or more indications of a subset of ports associated with the CSI-RS resource set or indicating a first number less than a number of CSI-RS resources in the CSI-RS resource set; and determine an index of a CSI-RS resource for CSI-RS Resource Indicator Reporting (CRI), Petition 870250088426, dated 09 / 30 / 2025, p.61 / 69 6 / 6 association between channel measurement feature (CMR) and interference measurement feature (IMR), an index of a CSI reporting configuration, or any combination thereof, based on the CSI-RS feature set and indications of one or multiple port subsets or the first number.

20. A method implemented by a user equipment (UE), characterized in that it comprises: receiving a first signal indicating a set of channel state information (CSI) reference signal (RS) features (CSI-RS); receiving a second signal indicating one or more indications of a subset of ports associated with the CSI-RS feature set or indicating a first number less than a number of CSI-RS features in the CSI-RS feature set; and determining, based on the first and second signals, an index of a CSI-RS feature for CSI-RS feature indicator reporting (CRI), an association between channel measurement feature (CMR) and interference measurement feature (IMR), an index of a CSI reporting configuration, or any combination thereof. Petition 870250088426, dated 09 / 30 / 2025, pp. 62 / 69

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