Method and apparatus for supporting spatial adaptation

Abstract

Various aspects of the disclosure relate to a method and an apparatus supporting spatial adaptation. An exemplary method includes receiving first signaling indicating a set of CSI-RS resources; receiving second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, where the CSI-RS resources of the first resource group and the second resource group are from the set of CSI-RS resources, and the two CSI-RS resources of the resource pair are from the first resource group and the second resource group, respectively; and determining an index associated with a CSI report based on the first signaling and the second signaling, where the CSI report comprises a reported metric associated with the first resource group, a reported metric associated with the second resource group, a reported metric associated with the resource pair, or any combination thereof.

Description

Technical Field

[0001] This disclosure relates to wireless communication, and more specifically to techniques supporting spatial adaptation. Background Technology

[0002] A wireless communication system may include one or more network communication devices (e.g., base stations) that support wireless communication with one or more user communication devices, which may otherwise be referred to as user equipment (UE) or other suitable terms. The wireless communication system can support wireless communication with one or more user communication devices by utilizing the resources of the wireless communication system (e.g., time resources (e.g., symbols, time slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers, or the like). Furthermore, the wireless communication system can support wireless communication across a variety of radio access technologies, including third-generation (3G), fourth-generation (4G), fifth-generation (5G), and other suitable radio access technologies beyond 5G (e.g., sixth-generation (6G)). Summary of the Invention

[0003] The article “a” preceding an element is unrestricted and is understood to refer to “at least one” or “one or more” of the elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. As used herein, the “or” included in the claims, as in a list of items (e.g., a list of items preceded by phrases such as “at least one of…”, “one or more of…”, or “one or both of…”), indicates a list of inclusion, such that a list of at least one of, for example, 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 herein, the phrase “based on” should not be construed as a reference to a set of closing conditions. For example, an example step described as “based on condition A” may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase “based on” should be understood in the same manner as the phrase “at least partially based on.” Furthermore, as used herein, the term "set" may include one or more elements as contained in the claims.

[0004] Some embodiments of the methods and apparatus described herein may further include a UE for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory and configured such that the UE: receives first signaling indicating a set of Channel State Information (CSI) Reference Signals (SRS) (CSI-RS) resources; receives second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and determines an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0005] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to determine the index associated with the CSI based on a configured or predefined mapping between the index associated with the CSI report and the sub-configuration indexes of the first resource group and the second resource group.

[0006] In some embodiments of the methods and apparatus described herein, the second signaling indicates one or more first port subset indications and one or more second port subset indications, and the at least one processor is configured to cause the UE to: determine a set of indexes associated with the CSI report based on the number of sub-configuration indexes associated with the one or more first port subset indications and the number of sub-configuration indexes associated with the one or more second port subset indications.

[0007] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine an index of the reporting metric associated with the first resource group based on the sub-configuration index of the first resource group; determine an index of the reporting metric associated with the second resource group based on the sub-configuration index of the second resource group; and determine an index of the reporting metric associated with the resource pair based on both the sub-configuration index of the first resource group and the sub-configuration index of the second resource group.

[0008] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine the index associated with the CSI report based on the index associated with the resource pair.

[0009] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine, based on a configured or predefined mapping between a corresponding reporting metric index and the index associated with the CSI report, an index of the reporting metric associated with the first resource group, an index of the reporting metric associated with the second resource group, and an index of the reporting metric associated with the resource pair.

[0010] In some embodiments of the methods and apparatus described herein, the second signaling indicates one or more first port subset indications, one or more second port subset indications, and one or more indexes associated with resource pairs, and at least one processor is configured to cause the UE to: determine a first value derived from the number of sub-configuration indexes associated with the one or more first port subset indications and the number of sub-configuration indexes associated with the one or more second port subset indications; determine a second value derived from the number of the one or more indexes associated with resource pairs; and determine a set of indexes associated with a CSI report based on the larger of the first value and the second value.

[0011] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine the index associated with the CSI report from the set of indexes associated with the CSI report.

[0012] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine an index of the reporting metric associated with the first resource group based on the sub-configuration index of the first resource group; determine an index of the reporting metric associated with the second resource group based on the sub-configuration index of the second resource group; and determine an index of the reporting metric associated with the resource pair based on the index associated with the resource pair.

[0013] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: receive a CSI request to trigger the CSI report based on the index associated with the CSI report.

[0014] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to determine the priority of the CSI report based on the index associated with the CSI report.

[0015] In some implementations of the methods and apparatus described herein, lower indexes associated with CSI reports have a higher priority than higher indexes associated with CSI reports.

[0016] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: first determine the priority of the CSI report based on the report index of the CSI report; and determine the priority of each uplink control information (UCI) bit associated with the report index based on the index associated with the CSI report.

[0017] In some embodiments of the methods and apparatus described herein, the at least one processor is configured such that the UE: in the case that the CSI report has multiple parts, applies the priority of the CSI report determined based on the index associated with the CSI report to each part.

[0018] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: discard some or all of the UCI bits corresponding to one or more CSI reports based on the index associated with the CSI report when it is necessary to discard UCI bits.

[0019] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine, based on the index associated with the CSI report, the number of CSI report CPU occupies, the number of active CSI-RS resources, the number of active CSI-RS ports, or any combination thereof.

[0020] In some embodiments of the methods and devices described herein, the sub-configuration index of the first resource group is the same as the sub-configuration index of the second resource group.

[0021] In some embodiments of the methods and apparatus described herein, the at least one processor is configured to cause the UE to: determine the index associated with the CSI report based on the sub-configuration index of the first resource group.

[0022] Some embodiments of the methods and apparatus described herein may further include a processor for wireless communication, the processor including at least one controller coupled to at least one memory and configured such that the at least one processor: receives first signaling indicating a CSI-RS resource set; receives second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and determines an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0023] Some embodiments of the methods and apparatus described herein may further include a network equipment (NE) for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory and configured such that the NE: transmits first signaling indicating a CSI-RS resource set; transmits second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and determines an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0024] Some embodiments of the methods and apparatus described herein may further include a method performed by a UE, comprising: receiving a first signaling indicating a CSI-RS resource set; receiving a second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof. Attached Figure Description

[0025] Figure 1 Examples of wireless communication systems according to aspects of this disclosure are described.

[0026] Figure 2 This describes an example of a configuration associated with a CSI-RS resource set, resource group, and resource pair in two TRP scenarios, according to aspects of this disclosure.

[0027] Figure 3 This describes an example of a configuration related to a port subset indication of a resource pair, according to aspects of this disclosure.

[0028] Figure 4 Examples of UEs based on aspects of this disclosure are described.

[0029] Figure 5 Examples of processors according to aspects of this disclosure are described.

[0030] Figure 6 Examples of NEs based on aspects of this disclosure are described.

[0031] Figure 7 A flowchart illustrating a method performed by a UE according to aspects of this disclosure.

[0032] Figure 8 A flowchart illustrating the method performed by NE according to aspects of this disclosure. Detailed Implementation

[0033] According to 3GPP Release (R) 18, there are two types of spatial adaptive modes (or "shutdown modes"): Type 1 spatial adaptive mode (or Type 1 spatial adaptive, or Type 1 shutdown mode, or Type 1 shutdown or similar) and Type 2 spatial adaptive mode (or Type 2 spatial adaptive, or Type 2 shutdown mode, or Type 2 shutdown or similar). For Type 1 shutdown mode, all elements corresponding to a port are shut down, therefore the number of CSI-RS ports will vary in different shutdown modes. Additionally, CSI reporting configurations may contain sub-configurations (or CSI sub-configurations, or CSI reporting sub-configurations or similar). Each sub-configuration may correspond to either Type 1 shutdown mode or Type 2 shutdown mode. For Type 1 shutdown mode, a port subset indicator is used to indicate the corresponding shutdown mode, such as a sub-configuration. For Type 1 spatial adaptive mode, each port subset indicator is associated with a sub-configuration. The relevant specification impacts related to spatial adaptation include CSI resource indicator (CRI) determination, CSI mapping order, CSI priority determination, CPU count, active CSI-RS resource count, and active CSI-RS port count.

[0034] However, R18 specifies spatial adaptation only in scenarios with a single Transmitter-Receiver Point (TRP) (S-TRP). Whether and how spatial adaptation is applied in scenarios with multiple TRPs (multiple TRPs or M-TRPs) remains unresolved, not to mention the specification-related implications. TRPs can be represented in various ways, such as by the control resource set (CORESET) pool index value, by the TRP index, by the resource group index, etc.

[0035] Considering at least the aforementioned technical issues, this disclosure proposes a technical solution supporting spatial adaptation, such as a method and apparatus supporting spatial adaptation in the case of multiple TRPs, wherein each TRP performs either Type 1 spatial adaptation or a disabled mode. An index or number of spatial adaptation modes associated with the multiple TRPs for comparison will be used to determine CSI report priority, non-periodic CSI reports, CPU calculations, active CSI-RS resource counts, and active CSI-RS port counts, etc.

[0036] According to some aspects of this disclosure (Solution 1), in a multi-TRP scenario, for example, two TRP operations, each TRP will have its own Type 1 space adaptive configuration, that is, a separate Type 1 space adaptive mode will be configured for each TRP or for each resource group.

[0037] For example, in some embodiments of this disclosure, the network side configures a corresponding spatial adaptive index for each TRP or for each resource group. Sub-configurations for each TRP can be used for each resource group. Sub-configurations or combinations of sub-configurations for multiple TRPs can be used for each resource pair. In some other embodiments of this disclosure, the network side configures a spatial adaptive number for each resource group or for each TRP. The spatial adaptive index for multiple TRPs is based on the spatial adaptive index of each TRP. The number of combinations of sub-configurations for multiple TRPs is based on the spatial adaptive number of each TRP. Since each TRP is associated with a resource group and multiple TRPs are associated with resource pairs, the number of resource group sub-configurations or sub-configuration indexes are based on the number or index configured for the corresponding resource group. The number of sub-configurations or sub-configuration indexes for resource pairs are based on the number or index configured for both resource groups.

[0038] In some other embodiments of this disclosure, the network side configures a spatial adaptive index or number for resource pairs. The spatial adaptive index or number for each TRP is based on the spatial adaptive index or number of resource pairs. The spatial adaptive index or number used for comparison between each TRP (e.g., TRP#1, TRP#2) and all multiple TRPs (e.g., TRP#1 plus TRP#2) is based on the spatial adaptive index of the resource pairs.

[0039] In some other embodiments of this disclosure, the network side configures a space adaptive index or number for each TRP and a space adaptive index or number for resource pairs. The space adaptive index or number used for comparison between each TRP (e.g., TRP#1, TRP#2) and all multiple TRPs (e.g., TRP#1 plus TRP#2) is based on the larger of the value derived from the space adaptive index or number of each TRP and the value derived from the space adaptive index or number of the resource pairs.

[0040] According to some other aspects of this disclosure (Solution 2), in a multi-TRP scenario, for example, two TRP operations, multiple TRPs will share the same type 1 space adaptive configuration. The space adaptive index or number used for comparison between each TRP (e.g., TRP#1, TRP#2) and all multiple TRPs (e.g., TRP#1 plus TRP#2) is based on the shared space adaptive index or number of each TRP.

[0041] This disclosure supports spatial adaptation in M-TRP scenarios, proposes corresponding specification effects related to CRI determination, CSI mapping order, CSI priority determination, CPU counting, active CSI-RS resource counting, and active CSI-RS port counting, and will improve network energy saving in M-TRP operations.

[0042] Aspects of this disclosure are described in the context of wireless communication systems.

[0043] Figure 1 This describes an example of a wireless communication system 100 according to aspects of this disclosure. The wireless communication system 100 may include one or more NEs 102, one or more UEs 104, and a core network (CN) 106. The wireless communication system 100 may support various radio access technologies. In some embodiments, the wireless communication system 100 may be a 4G network, such as an LTE network or an LTE-A network. In some other embodiments, the wireless communication system 100 may be an NR network, such as a 5G network, a 5G-A network, or a 5G Ultra Wideband (5G-UWB) network. In other embodiments, the wireless communication system 100 may be a combination of 4G and 5G networks, or other suitable radio access technologies, including IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20. The wireless communication system 100 may support radio access technologies beyond 5G, such as 6G. In addition, the wireless communication system 100 can support technologies such as Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), or Code Division Multiple Access (CDMA).

[0044] One or more NEs 102 may be distributed throughout a geographic area to form a wireless communication system 100. One or more of the NEs 102 described herein may be, include, or be referred to as a network node, base station, network element, network function, network entity, radio access network (RAN), NodeB, eNodeB (eNB), next-generation NodeB (gNB), or other suitable terms. NEs 102 and UEs 104 may communicate via a communication link, which may be wireless or wired. For example, NEs 102 and UEs 104 may perform wireless communication (e.g., receive signaling, transmit signaling) via a Uu interface.

[0045] NE 102 can provide a geographic coverage area, for which NE 102 can support services for one or more UEs 104 within the geographic coverage area. For example, NE 102 and UE 104 can support wireless communication of signals associated with services (e.g., voice, video, packet data, messaging, broadcasting, etc.) according to one or more radio access technologies. In some embodiments, NE 102 can be mobile, such as a satellite associated with a non-terrestrial network (NTN). In some embodiments, different geographic coverage areas 112 associated with the same or different radio access technologies can overlap, but different geographic coverage areas can be associated with different NEs 102.

[0046] One or more UEs 104 may be distributed throughout the geographic area of ​​the wireless communication system 100. UE 104 may include or be referred to as a remote unit, mobile device, wireless device, remote device, subscriber device, transmitter device, receiver device, or some other suitable term. In some embodiments, UE 104 may be referred to as a unit, station, terminal, or client, and other instances thereof. Additionally, or alternatively, UE 104 may be referred to as an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a Machine Type Communication (MTC) device, and other instances thereof.

[0047] UE 104 may be able to support direct wireless communication with other UE 104 via a communication link. For example, UE 104 may support direct wireless communication with another UE 104 via a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a side link. For example, UE 104 may support direct wireless communication with another UE 104 via a PC5 interface.

[0048] NE 102 may support communication with CN 106, or with another NE 102, or both. For example, NE 102 may interface with other NE 102 or CN 106 via one or more backhaul links (e.g., S1, N2, N2, or network interfaces). In some embodiments, NE 102 may communicate directly with each other. In other embodiments, NE 102 may communicate with each other or indirectly (e.g., via CN 106). In some embodiments, one or more NE 102 may include sub-components, such as access network entities, which may be instances of Access Node Controllers (ANCs). The ANC may communicate with one or more UEs 104 via one or more other access network transport entities (which may be referred to as radio heads, smart radio heads, or TRPs).

[0049] CN 106 can support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. CN106 can be an evolved packet core (EPC) or a 5G core (5GC), which may include control plane entities (e.g., Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) that manage access and mobility, and user plane entities (e.g., Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) that route packets to or interconnect to external networks. In some implementations, the control plane entities may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signaling bearers, etc.) of one or more UEs 104 served by one or more NEs 102 associated with CN 106.

[0050] CN 106 can communicate with the packet data network via one or more backhaul links (e.g., via S1, N2, N2, or another network interface). The packet data network may contain an application server. In some implementations, one or more UEs 104 can communicate with the application server. UE 104 can establish a session (e.g., a Protocol Data Unit (PDU) session or the like) with CN 106 via NE 102. CN 106 can use the established session (e.g., an established PDU session) to route services (e.g., control information, data, and the like) between UE 104 and the application server. A PDU session may be an instance of a logical connection between UE 104 and CN 106 (e.g., one or more network functions of CN 106).

[0051] In the wireless communication system 100, NE 102 and UE 104 can use the resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, time slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communication). In some embodiments, NE 102 and UE 104 may support different resource structures. For example, NE 102 and UE 104 may support different frame structures. In some embodiments, such as in 4G, NE 102 and UE 104 may support a single-frame structure. In some other embodiments, such as in 5G and in other suitable radio access technologies, NE 102 and UE 104 may support various frame structures (i.e., multi-frame structures). NE 102 and UE 104 may support various frame structures based on one or more parameter sets.

[0052] The wireless communication system 100 may support one or more parameter sets, and the parameter sets may include subcarrier spacing and cyclic prefixes. A first parameter set (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a regular cyclic prefix. In some embodiments, the first parameter set (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one time slot per subframe. A second parameter set (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a regular cyclic prefix. A third parameter set (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a regular cyclic prefix or an extended cyclic prefix. A fourth parameter set (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a regular cyclic prefix. A fifth parameter set (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a regular cyclic prefix.

[0053] Time intervals for organizing resources (e.g., communication resources) can be based on frames (also called radio frames). Each frame may have a duration, such as 10 milliseconds (ms). In some embodiments, each frame may contain multiple subframes. For example, each frame may contain 10 subframes, and each subframe may have a duration, such as 1 ms. In some embodiments, each frame may have the same duration. In some embodiments, each subframe of a frame may have the same duration.

[0054] Alternatively, the time intervals of resources (e.g., communication resources) can be organized according to time slots. For example, a subframe may contain a certain number (e.g., quantity) of time slots. The number of time slots in each subframe may also depend on one or more parameter sets supported in the wireless communication system 100. For example, the first, second, third, fourth, and fifth parameter sets (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with corresponding subcarrier intervals of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize one time slot per subframe, two time slots per subframe, four time slots per subframe, eight time slots per subframe, and 16 time slots per subframe, respectively. Each time slot may contain a certain number (e.g., quantity) of symbols (e.g., OFDM symbols). In some embodiments, the number (e.g., quantity) of time slots in a subframe may depend on the parameter set. For a conventional cyclic prefix, a time slot may contain 14 symbols. For an extended cyclic prefix (e.g., applicable to a 60 kHz subcarrier spacing), a time slot may contain 12 symbols. The relationship between the number of symbols per time slot for the regular cyclic prefix and the extended cyclic prefix, and the relationship between the number of time slots per subframe and the number of time slots per frame, may depend on the parameter set. It should be understood that references to the first parameter set (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) can be used interchangeably between subframes and time slots.

[0055] In the wireless communication system 100, the electromagnetic (EM) spectrum can be divided into various categories, frequency bands, frequency channels, etc., based on frequency or wavelength. For example, the wireless communication system 100 may support one or more operating frequency bands, such as frequency range names FR1 (410 MHz to 7.125 GHz), FR2 (24.25 GHz to 52.6 GHz), FR3 (7.125 GHz to 24.25 GHz), FR4 (52.6 GHz to 114.25 GHz), FR4a or FR4-1 (52.6 GHz to 71 GHz), and FR5 (114.25 GHz to 300 GHz). In some embodiments, NE 102 and UE 104 can perform wireless communication through one or more of the operating frequency bands. In some embodiments, FR1 can be used by NE 102 and UE 104, as well as other equipment or devices for cellular communication services (e.g., control information, data). In some implementations, FR2 can be used by NE 102 and UE 104, as well as other equipment or devices, for short-range, high data rate capabilities.

[0056] FR1 may be associated with one or more parameter sets (e.g., at least three parameter sets). For example, FR1 may be associated with: a first parameter set (e.g., μ=0) containing a 15 kHz subcarrier spacing; a second parameter set (e.g., μ=1) containing a 30 kHz subcarrier spacing; and a third parameter set (e.g., μ=2) containing a 60 kHz subcarrier spacing. FR2 may be associated with one or more parameter sets (e.g., at least two parameter sets). For example, FR2 may be associated with: a third parameter set (e.g., μ=2) containing a 60 kHz subcarrier spacing; and a fourth parameter set (e.g., μ=3) containing a 120 kHz subcarrier spacing.

[0057] For Type 1 spatial adaptation, all spatial elements corresponding to a port will be set to on or off according to the configured spatial adaptation mode, so different spatial adaptation modes will have different numbers of antenna ports.

[0058] In the case of S-TRP operation, when a CSI-RS resource set is associated with different Type 1 spatial adaptive modes, each spatial adaptive mode or CSI report sub-configuration will be associated with a port subset indication, for example, configured by a bitmap from the network side. The port subset indication will be applied to all CSI-RS resources within the CSI-RS resource set.

[0059] According to aspects of this disclosure, Type 1 spatial adaptation will also be applied in M-TRP operations. When multiple TRPs exist (e.g., two TRPs), a CSI-RS resource set also exists, for example, configured by the network side via Radio Resource Control (RRC) signaling or other signaling. Unlike S-TRP, the network side will configure multiple resource groups, for example, a first and a second CSI-RS resource group (also referred to as a resource group or CSI-RS set or similar). Each resource group corresponds to a TRP. The elements of each resource group come from the CSI-RS resource set. Additionally, the network side may configure one or more resource pairs, where one element of the resource pair comes from the first resource group and another element of the resource pair comes from the second resource group. The resource pair corresponds to simultaneous multiple TRP transmissions and / or receptions. For CRI reporting, the selected CSI-RS resource (e.g., identified by a CSI-RS resource index) may come from the first resource group, the second resource group, or the resource pair. The number of reported CRIs is 1, 2, or 3, depending on the CSI reporting configuration and whether a comparison is made between individual TRP transmissions and multiple TRP transmissions. Those skilled in the art should clearly understand that, for clarity and simplicity, resource groups and resource pairs are described using two TRPs. When more than two TRPs exist, more than two resource groups can be configured, and therefore combinations of resource groups corresponding to simultaneous multi-TRP transmission and / or reception can be configured. Resource group combinations are similar to resource pairs, but since more than two resource groups are configured, they contain more than two CSI-RS resources.

[0060] Figure 2 This describes an example of a configuration associated with a CSI-RS resource set, resource group, and resource pair in two TRP scenarios, according to aspects of this disclosure.

[0061] like Figure 2 As shown, a CSI-RS resource set is configured for the UE, which includes CSI-RS resources #1, #2, #3, #4, #5, #6, #7, and #8. Two resource groups are configured for two TRPs, for example, a first resource group, CSI-RS resource group #1 for the first TRP, and a second resource group, CSI-RS resource group #2 for the second TRP. CSI-RS resource group #1 includes CSI-RS resources #1, #2, and #3, and CSI-RS resource group #2 includes CSI-RS resources #4, #5, #6, #7, and #8. In addition, two resource pairs are configured for the UE, for example, pair #1 and pair #2. Pair #1 includes CSI-RS resource #3 from CSI-RS resource group #1 and CSI-RS resource #5 from CSI-RS resource group #2. #2 includes CSI-RS resource #2 from CSI-RS resource group #1 and CSI-RS resource #8 from CSI-RS resource group #2.

[0062] The network side will indicate the spatial adaptive mode index or number to the UE in various ways through RRC signaling, Media Access Control (MAC) control element (CE), downlink control information (DCI), or other signaling. For example, the network side will indicate one or more first port subsets associated with a sub-configuration index of a first resource group, or indicate one or more second port subsets associated with a sub-configuration index of a second resource group, or indicate one or more indices associated with a resource pair, or indicate any combination of the above.

[0063] The indexes associated with the CSI report will be determined based at least on configuration information related to spatial adaptation. A model CSI report may be a reporting metric associated with a first resource group, a reporting metric associated with a second resource group, a reporting metric associated with a resource pair, or any combination thereof.

[0064] The following describes more detailed implementation schemes of this disclosure with reference to Scheme 1 and Scheme 2 respectively.

[0065] Option 1: Each TRP has specific spatial adaptation

[0066] In Scheme 1, the network side will configure individual spatial adaptation for different TRPs. For example, due to different channel conditions, traffic and / or service requirements, each TRP in different TRPs can be configured with its own spatial adaptation. Port subset indications will be configured by resource group, not by CSI-RS resource set. The two elements of a resource pair can have different numbers of port subset indications, and the port subset indications configured for different elements of the resource pair can be the same or different.

[0067] Figure 3 This describes an example of a configuration related to a port subset indication of a resource pair, according to aspects of this disclosure.

[0068] Assuming that Figure 2 Configure the displayed port subset indication using the configuration shown in the example. Figure 3 As shown, for a pair #1 containing CSI-RS resource #3 from the first resource group and CSI-RS resource #5 from the second resource group, the two elements of the resource pair have different numbers of port subset indicators. For example, one element of the resource pair, such as CSI-RS resource #3, may have two port subset indicators, such as port subset indicator #1 and port subset indicator #2, while the other element of the resource pair (such as CSI-RS resource #5) may have three port subset indicators, such as port subset indicator #1, port subset indicator #2, and port subset indicator #3.

[0069] Similar to resource pairs, Scheme 1 introduces sub-configuration combinations (or sub-configuration index combinations), where one element in a sub-configuration combination is a sub-configuration of a first resource group (e.g., a sub-configuration index), and the other element in the sub-configuration combination is a sub-configuration of a second resource group (e.g., a sub-configuration index). For each sub-configuration combination, there exists a composite index that associates CSI reports and can be used for CSI priority determination, CSI mapping order, CPU counting, etc. The number of CSI reports (e.g., CSI or CRI, etc.) is also configured per sub-configuration combination. CSI reports may contain CSI reports associated with one or more sub-configuration combinations.

[0070] In some embodiments of this disclosure, to configure spatial adaptation for each TRP, the network side may indicate sub-configurations for a first resource group and sub-configurations for a second resource group. The combination of sub-configurations will be determined based on the sub-configurations of the first resource group and the second resource group.

[0071] For example, the network side can configure the number of sub-configuration indexes for the first resource group to N1 (or configure N1 sub-configuration indexes for the first resource group), for example, by indicating N1 port subsets; and configure the number of sub-configuration indexes for the second resource group to N2 (or configure N2 sub-configuration indexes for the second resource group), for example, by indicating N2 port subsets. The sub-configuration combination index will be determined based on the sub-configuration indexes of the first and second resource groups. Therefore, the number of sub-configuration combinations (or the number of sub-configuration combination indexes or similar) will be determined as N3 = N1. N2.

[0072] The mapping (or association, or similar) between the sub-configuration composite index and the sub-configuration indexes of the first resource group and the second resource group is configured or predefined. The exemplary mapping order is first the sub-configuration indexes of the first resource group, then the sub-configuration indexes of the second resource group. That is, first the mapping between the sub-configuration composite index and the sub-configuration indexes of the first resource group, then the mapping between the sub-configuration composite index and the sub-configuration indexes of the second resource group.

[0073] For example, suppose all sub-configuration combinations, sub-configurations of the first resource group, and sub-configurations of the second resource group are indexed from 0. Following the exemplary mapping order described above, sub-configuration combination index #0 will be mapped to sub-configuration #0 of the first resource group and sub-configuration #0 of the second resource group (or related to them, or associated with them, or similar), and sub-configuration combination index #1 will be mapped to sub-configuration #1 of the first resource group and sub-configuration #0 of the second resource group, and so on.

[0074] For a CSI report corresponding to a sub-configuration composite index, the UE (similarly on the network side) will determine the index of the reporting metric associated with the first resource group based on the sub-configuration index of the first resource group, and determine the index of the reporting metric associated with the second resource group based on the sub-configuration index of the second resource group. In some cases, resource pairs can also be determined based on the configured sub-configuration index of the first resource group and the sub-configuration index of the second resource group. Therefore, the UE will determine the index of the reporting metric associated with the resource pair based on both the sub-configuration index of the first resource group and the sub-configuration index of the second resource group. The UE can also determine the index of the reporting metric associated with the resource pair based on the sub-configuration composite index.

[0075] In some other embodiments of this disclosure, to configure spatial adaptation for each TRP, the network side may indicate a combination of sub-configurations for resource pairs, for example, by indicating an index associated with the resource pair. For example, the network side may indicate a subset of ports associated with the sub-configuration combination index of the resource pair. An exemplary sub-configuration combination for a resource pair may include two sub-configurations, one associated with a first resource group and the other with a second resource group. Therefore, the corresponding sub-configurations for the first and second resource groups can also be determined based on the configuration of the resource pairs, for example, based on configured or predefined rules. Similarly, the number of sub-configurations for the first and second resource groups can also be determined based on the number of sub-configuration combinations for the resource pairs. For example, assuming the number of sub-configuration combinations for a resource pair is 6, then based on predefined rules, the number of sub-configurations for the first resource group is 2, and the number of sub-configurations for the second resource group is 3.

[0076] For a CSI report corresponding to a sub-configuration composite index, the UE (similarly on the network side) will determine the index of the reporting metric associated with the first resource group, the index of the reporting metric associated with the second resource group, and the index of the reporting metric associated with the resource pair based on the configured or predefined mapping between the corresponding reporting metric index and the sub-configuration composite index.

[0077] In some other embodiments of this disclosure, in order to configure spatial adaptation for each TRP, in addition to the sub-configurations of the first resource group and the second resource group, the network side may also configure combinations of sub-configurations of resource pairs. A first value is derived from the number of sub-configurations of the first resource group and the number of sub-configurations of the second resource group, and a second value is derived from the number of combinations of sub-configurations of resource pairs. A set of sub-configuration combinations is determined based on the larger of the first and second values.

[0078] For example, the network side can configure the number of sub-configuration indexes for the first resource group to N1 (or configure N1 sub-configuration indexes for the first resource group), for example, by indicating N1 port subsets; configure the number of sub-configuration indexes for the second resource group to N2 (or configure N2 sub-configuration indexes for the second resource group), for example, by indicating N2 port subsets; and configure the number of sub-configuration combination indexes for resource pairs to N4 (or configure N4 sub-configuration combination indexes). Considering N3=N1... The larger of N2 and N4 is used to determine the number of subconfiguration composite indexes and to determine each subconfiguration composite index used in the CSI report.

[0079] For a CSI report corresponding to a sub-configuration combination index, the UE (similarly on the network side) will determine the index of the reporting metric associated with the first resource group based on the sub-configuration index of the first resource group; determine the index of the reporting metric associated with the second resource group based on the sub-configuration index of the second resource group; and determine the index of the reporting metric associated with the resource pair based on the sub-configuration combination index.

[0080] According to aspects of this disclosure, in Scheme 1, a sub-configuration composite index will be used to determine CSI report priority and mapping order. For example, when determining CSI report priority, the sub-configuration composite index can replace the sub-configuration index in R18. An exemplary priority rule is that a lower (or smaller) sub-configuration composite index has a higher priority than a higher (or larger) sub-configuration composite index.

[0081] For a CSI report (which contains CSI reports corresponding to multiple sub-configuration combinations), different sub-configuration combination indices will result in different priorities within the CSI report. The priority of this CSI report is determined based on the priority in the legacy version, for example, based on the cell identifier (or index) (ID), CSI report ID, report metric (e.g., Reference Received Power (RSRP), Channel Quality Information (CQI), Precoding Matrix Indicator (PMI), or Rank Indicator (RI), etc.), and time-domain behavior (e.g., aperiodic, periodic, or semi-persistent).

[0082] For the corresponding part of TS38.212, for CSI reports corresponding to sub-configuration composite indexes, the mapping order of the CSI fields in the CSI report is the same as in the old CSI reports, except that the CSI report ID is replaced with the sub-configuration composite index. When multiple CSI reports are reported in a single report example, the mapping order of the multiple CSI reports is based on the CSI report ID, for example, from lower (or smaller) to higher (larger). If there are CSI reports with multiple sub-configuration composite indexes, then within the UCI bits used for CSI reports, the mapping order of the different sub-configuration composite indexes is from the lower sub-configuration composite index to the higher sub-configuration composite index. That is, the CSI report priority is first determined based on the CSI report ID, and then the priority of each UCI bit associated with the CSI report ID is determined based on the sub-configuration composite index.

[0083] Additionally, for the corresponding part of TS 38.212, when multiple parts exist in a CSI report, the UE (similarly on the network side) applies the priority of the CSI report determined based on the sub-configuration combination index to each part. For example, if a CSI report has two parts, and multiple CSI reports are reported in a single report example, then the first parts of the multiple CSI reports will be multiplexed together in one time example, and the second parts of the multiple CSI reports will be multiplexed in another time example. For the multiplexing of each part, the mapping order of the multiple CSI reports is based on the CSI report ID, for example, from lower to higher. If there are CSI reports associated with multiple sub-configuration combination indices, then within the UCI bits of the CSI reports, the mapping order of the CSI reports for different sub-configuration combination indices is from the lower sub-configuration combination index to the higher sub-configuration combination index.

[0084] Furthermore, for the corresponding part of TS 38.212, when it is necessary to discard UCI bits, the UE will discard some or all of the UCI bits corresponding to one or more CSI reports based on the sub-configuration combination index. That is, the discarding can be performed at the sub-configuration combination level. For example, the CSI report with the highest sub-configuration combination index will be discarded first, and then the CSI report with the second highest sub-configuration combination index will be discarded.

[0085] Examples of CSI mapping order are shown in Table 1 below.

[0086] Table 1

[0087]

[0088] For non-periodic CSI reports, there will be multiple sets of sub-configuration combination indexes configured by higher layers. According to aspects of this disclosure, the UE will receive a CSI request to trigger a CSI report based on the sub-configuration combination indexes. For example, the UE may receive a DCI from the network side, where the code points in the DCI will trigger a set of sub-configuration combination indexes associated with the CSI report ID.

[0089] Furthermore, according to aspects of this disclosure, in Scheme 1, sub-configuration composite indexes will be used for CPU counting. For non-periodic CSI reports or semi-persistent (SP) CSI reports associated with a CSI report ID, if one or more sub-configuration composite indexes triggered by DCI exist in the overall configured sub-configuration composite index, then the CPU counting will consider the indicated one or more sub-configuration composite indexes. The CPU of each of the one or more sub-configuration composite indexes is summed to determine the total CPU for the same CSI report ID. For periodic CSI reports, the CPU of each sub-configuration composite index will be added for all configured sub-configuration composite indexes of the CSI report. Additionally, for Type 1 space adaptation, for each sub-configuration composite index, the CPU is determined based on the total number of CSI-RS resources and the number of resource pairs in each resource group.

[0090] According to aspects of this disclosure, in Scheme 1, the sub-configuration composite index will also be used for active CSI-RS resource counting.

[0091] The UE (similarly on the network side) will determine a set of sub-configuration combination indices for the CSI report associated with the report ID. For periodic CSI reports, the set of sub-configuration combination indices contains all sub-configuration combination indices configured for the CSI report. For non-periodic CSI reports or SP CSI reports, the set of sub-configuration combination indices is triggered by the DCI.

[0092] For each sub-configuration combination index in the determined set of sub-configuration combination indices, the UE (similarly on the network side) will determine the number of active CSI-RS resources referenced. This can reuse legacy mechanisms. For example, for a sub-configuration combination index, if a CSI-RS resource is referenced M times by any resource group and / or any resource pair, then the CSI-RS resource will be counted M times.

[0093] Then, the UE (similarly on the network side) will perform the addition of the counts for each CSI-RS resource in multiple sub-configuration combination indices. For example, suppose two sub-configuration combination indices, such as sub-configuration combination index #1 and sub-configuration combination index #2, are triggered aperiodically by the DCI. If CSI-RS resource #2 (e.g., CSI-RS resource #2) is counted twice for sub-configuration combination index #1 and three times for sub-configuration combination index #2, then CSI-RS resource #2 will be counted five times.

[0094] After determining the count of CSI-RS resources, the UE (similarly on the network side) will perform addition on all CSI-RS resources associated with the CSI report, and then determine the number of active CSI-RS resources.

[0095] According to aspects of this disclosure, in Scheme 1, the sub-configuration composite index will also be used for active CSI-RS port counting. The mechanism for active CSI-RS port counting is similar to that for active CSI-RS resource counting.

[0096] For example, the UE (similarly on the network side) will determine a set of sub-configuration combination indices for the CSI report associated with the report ID. For periodic CSI reports, the set of sub-configuration combination indices contains all sub-configuration combination indices configured for the CSI report. For non-periodic CSI reports or SP CSI reports, the set of sub-configuration combination indices is triggered by the DCI.

[0097] For each sub-configuration combination index in the determined set of sub-configuration combination indices, the UE (similarly on the network side) will determine the number of ports for the active CSI-RS resource. If the CSI-RS resource is referenced M times by any resource group and / or any resource pair, and the indicated number of ports for the CSI-RS resource is Kp, then the number of ports for the active CSI-RS resource is determined to be Kp. M. For CSI-RS resources, different sub-configuration combined indexes can have different numbers of ports.

[0098] Similar to active CSI-RS resource counting, the UE (similarly on the network side) will perform an accumulation across multiple sub-configuration combined indices, for example, the addition of the counted port number for each CSI-RS resource in multiple sub-configuration combined indices.

[0099] The UE (similarly on the network side) then performs an accumulation across multiple CSI-RS resources to determine the total number of active ports, which is determined by a port subset indication associated with the resource group to which the CSI-RS resource belongs. For example, if the CSI-RS resource is in the first resource group, the number of ports for the CSI-RS resource will be determined by the port subset indication associated with the first resource group. If the CSI-RS resource is in the second resource group, the number of ports for the CSI-RS resource will be determined by the port subset indication associated with the second resource group.

[0100] Option 2: Multiple TRPs share the same adaptive space

[0101] In Scheme 2, the network side will configure common space adaptation for different TRPs, meaning that different TRPs share the same space adaptation. Therefore, the same port subset indication is applied to all resource groups and resource pairs within the CSI-RS resource set. The index associated with the CSI report is a sub-configuration index, which can be used as in previous versions, for example, for CSI priority determination, CSI mapping order, active CSI-RS resource counts, active CSI-RS port counts, and CPU counts.

[0102] For example, in some embodiments of this disclosure, the CSI priority of a sub-configuration will be determined as the CSI priority of the S-TRP case in R18. That is, the priority of the corresponding CSI report is determined based on the CSI report ID, and the priority of each sub-configuration within the CSI report is determined based on the sub-configuration index. The content of the CSI for each sub-configuration is the same as that in the previous version.

[0103] In some embodiments of this disclosure, the CSI mapping order for each sub-configuration will again utilize the R18 mechanism. That is, to find the position of the bit corresponding to the associated CSI report ID, the CSI content for each sub-configuration is mapped from lower to higher indices, and the CSI content for each sub-configuration is the same as the CSI content for multiple TRPs in the legacy version. In other words, the UE will rely on the CSI reporting configuration to report CSI for a single TRP or multiple TRPs.

[0104] In some embodiments of this disclosure, an accumulation count of active CSI-RS resources is performed across different sub-configurations and CSI-RS resources. The count for sub-configurations and CSI-RS resources may be similar to that in previous versions. That is, if a CSI-RS resource is referenced M times by any resource group and / or any resource pair, then it will be counted M times.

[0105] In some embodiments of this disclosure, an accumulation count of active CSI-RS ports is performed across different sub-configurations and CSI-RS resources. For sub-configurations and CSI-RS resources, the number of ports counted may be based on a legacy version. That is, if a CSI-RS resource is referenced M times by any resource group and / or any resource pair, then it will be counted M times, and if the subset indication number is p, then the counted number of CSI-RS ports is M. p. Based on the corresponding port subset indication, different sub-configurations can have different numbers of ports.

[0106] In some embodiments of this disclosure, sub-configuration indexes are used for CPU counting. For non-periodic CSI reports or SP CSI reports associated with a CSI report ID, if one or more sub-configuration indexes triggered by DCI exist in the overall configured sub-configuration index, then the CPU count will consider the indicated one or more sub-configuration indexes. The CPU of each of the one or more sub-configuration indexes is summed to determine the total CPU for the same CSI report ID. For periodic CSI reports, the CPU of each sub-configuration is added for all configured sub-configuration indexes of the CSI report. Additionally, for Type 1 space adaptation, for each sub-configuration index, the CPU is determined based on the total number of CSI-RS resources and the number of resource pairs in each resource group.

[0107] Figure 4 An example of a UE 400 according to aspects of this disclosure is described. UE 400 may include a processor 402, a memory 404, a controller 406, and a transceiver 408. The processor 402, memory 404, controller 406, and transceiver 408, or various combinations thereof, or various components thereof, may be examples of components for performing the various aspects of this disclosure as described herein. These components may be coupled via one or more interfaces (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0108] Processor 402, memory 404, controller 406, or transceiver 408, or various combinations or components thereof, may be implemented in hardware (e.g., a circuit system). The hardware may include processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), or other programmable logic devices, or any combination thereof, configured to or otherwise support components for performing the functions described in this disclosure.

[0109] Processor 402 may include intelligent hardware devices (e.g., a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination thereof). In some embodiments, processor 402 may be configured to operate memory 404. In some other embodiments, memory 404 may be integrated into processor 402. Processor 402 may be configured to execute computer-readable instructions stored in memory 404 to cause UE 400 to perform various functions of this disclosure.

[0110] Memory 404 may include volatile or non-volatile memory. Memory 404 may store computer-readable, computer-executable code containing instructions that, when executed by processor 402, cause UE 400 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as memory 404 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media may be any available medium accessible by a general-purpose or special-purpose computer.

[0111] In some implementations, processor 402 and memory 404 coupled to processor 402 may be configured to cause UE 400 to perform one or more of the functions described herein (e.g., processor 402 executes instructions stored in memory 404). For example, according to the examples disclosed herein, processor 402 may support wireless communication at UE 400. UE 400 may be configured to support components for receiving first signaling indicating a CSI-RS resource set; components for receiving second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and components for determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0112] Controller 406 manages the input and output signals of UE 400. Controller 406 can also manage peripheral devices not integrated into UE 400. In some embodiments, controller 406 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some embodiments, controller 406 may be implemented as part of processor 402.

[0113] In some embodiments, UE 400 may include at least one transceiver 408. In other embodiments, UE 400 may have more than one transceiver 408. Transceiver 408 may represent a wireless transceiver. Transceiver 408 may include one or more receiver chains 410, one or more transmitter chains 412, or a combination thereof.

[0114] Receiver chain 410 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, receiver chain 410 may include one or more antennas for receiving signals over the air or a wireless medium. Receiver chain 410 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. Receiver chain 410 may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by reversing the modulation technique applied during signal transmission. Receiver chain 410 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0115] Transmitter chain 412 can be configured to generate and transmit signals (e.g., control information, data, packets). Transmitter chain 412 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. 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 like phase shift keying (PSK) or quadrature amplitude modulation (QAM). Transmitter chain 412 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. Transmitter chain 412 may also include one or more antennas for transmitting the amplified signal over the air or into a wireless medium.

[0116] Figure 5An example of a processor 500 according to aspects of this disclosure is described. Processor 500 may be an example of a processor configured to perform various operations according to the examples described herein. Processor 500 may include a controller 502 configured to perform various operations according to the examples described herein. Processor 500 may optionally include at least one memory 504, which may be, for example, an L1 / L2 / L3 cache. Additionally or alternatively, processor 500 may optionally include one or more arithmetic logic units (ALUs) 506. One or more of these components may be electronically communicateable or otherwise coupled via one or more interfaces (e.g., buses) (e.g., operatively, communicatively, functionally, electronically, electrically).

[0117] Processor 500 may be a processor chipset and includes a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receive, acquire, retrieve, transmit, output, forward, store, determine, identify, access, write, read) according to the examples described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to the processor chipset (e.g., processor 500) or included in the processor chipset, 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), etc.).

[0118] Controller 502 can be configured to manage and coordinate various operations of processor 500 (e.g., signaling, receiving, acquiring, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, and reading) to enable processor 500 to support various operations according to the examples described herein. For example, controller 502 can operate as a control unit of processor 500, generating control signals that manage the operation of various components of processor 500. These control signals include enabling or disabling functional units, selecting data paths, initiating memory accesses, and coordinating operation timing.

[0119] Controller 502 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from memory 504 and determine subsequent instructions to be executed to enable processor 500 to support various operations according to the examples described herein. Controller 502 may be configured to track the memory addresses of instructions associated with memory 504. Controller 502 may be configured to decode instructions to determine the operations to be performed and the operands involved. For example, controller 502 may be configured to interpret instructions and determine control signals to be output to other components of processor 500 to enable processor 500 to support various operations according to the examples described herein. Alternatively or additionally, controller 502 may be configured to manage data flow within processor 500. Controller 502 may be configured to control data transfers between registers, arithmetic logic unit (ALU), and other functional units of processor 500.

[0120] Memory 504 may include one or more caches (e.g., memory or other memory, such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc., local to processor 500 or included in processor 500). In some embodiments, memory 504 may reside within or on the processor chipset (e.g., local to processor 500). In some other embodiments, memory 504 may reside outside the processor chipset (e.g., remote from processor 500).

[0121] Memory 504 may store computer-readable, computer-executable code, including instructions that, when executed by processor 500, cause processor 500 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. Controller 502 and / or processor 500 may be configured to execute the computer-readable instructions stored in memory 504 to cause processor 500 to perform various functions. For example, processor 500 and / or controller 502 may be coupled to or coupled to memory 504, and processor 500, controller 502, and memory 504 may be configured to perform the various functions described herein. In some instances, processor 500 may include multiple processors and memory 504 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, and the multiple processors may be individually or collectively configured to perform the various functions described herein.

[0122] One or more ALUs 506 may be configured to support various operations according to the examples described herein. In some embodiments, one or more ALUs 506 may reside within or on a processor chipset (e.g., processor 500). In some other embodiments, one or more ALUs 506 may reside outside the processor chipset (e.g., processor 500). One or more ALUs 506 may perform one or more calculations on data, such as addition, subtraction, multiplication, and division. For example, one or more ALUs 506 may receive input operands and opcodes, which determine the operation to be performed. One or more ALUs 506 may be configured with various logic and arithmetic circuitry, including adders, subtractors, shifters, and logic gates, to process and manipulate data according to the operation. Alternatively, one or more ALU 506s may support logical operations such as AND, OR, XOR, NOR, and NAND, enabling one or more ALU 506s to handle conditional operations, comparisons, and bitwise operations.

[0123] Processor 500 may support wireless communication according to the examples disclosed herein. Processor 500 may be configured or operable to support means for receiving first signaling indicating a CSI-RS resource set; means for receiving second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and means for determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0124] Figure 6 An example of NE 600 according to aspects of this disclosure is described. NE 600 may include a processor 602, a memory 604, a controller 606, and a transceiver 608. The processor 602, memory 604, controller 606, and transceiver 608, or various combinations thereof, or various components thereof, may be examples of components for performing the various aspects of this disclosure as described herein. These components may be coupled via one or more interfaces (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0125] Processor 602, memory 604, controller 606, or transceiver 608, or various combinations or components thereof, may be implemented in hardware (e.g., a circuit system). The hardware may include processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), or other programmable logic devices, or any combination thereof, configured to or otherwise support components for performing the functions described in this disclosure.

[0126] Processor 602 may include intelligent hardware devices (e.g., a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination thereof). In some embodiments, processor 602 may be configured to operate memory 604. In some other embodiments, memory 604 may be integrated into processor 602. Processor 602 may be configured to execute computer-readable instructions stored in memory 604 to cause NE 600 to perform various functions of this disclosure.

[0127] Memory 604 may include volatile or non-volatile memory. Memory 604 may store computer-readable, computer-executable code, including instructions that, when executed by processor 602, cause NE 600 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as memory 604 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media may be any available medium accessible by a general-purpose or special-purpose computer.

[0128] In some implementations, processor 602 and memory 604 coupled to processor 602 may be configured to cause NE 600 to perform one or more of the functions described herein (e.g., processor 602 executes instructions stored in memory 604). For example, according to the examples disclosed herein, processor 602 may support wireless communication at NE 600. The NE 600 can be configured to support components for transmitting first signaling indicating a CSI-RS resource set; components for transmitting second signaling indicating a first port subset indication associated with a sub-configuration index of a first resource group, a second port subset indication associated with a sub-configuration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are respectively from the first resource group and the second resource group; and components for determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

[0129] Controller 606 manages the input and output signals of NE 600. Controller 606 can also manage peripheral devices not integrated into NE 600. In some embodiments, controller 606 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some embodiments, controller 606 may be implemented as part of processor 602.

[0130] In some embodiments, NE 600 may include at least one transceiver 608. In other embodiments, NE 600 may have more than one transceiver 608. Transceiver 608 may represent a wireless transceiver. Transceiver 608 may include one or more receiver chains 610, one or more transmitter chains 612, or a combination thereof.

[0131] Receiver chain 610 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, receiver chain 610 may include one or more antennas for receiving signals over the air or a wireless medium. Receiver chain 610 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. Receiver chain 610 may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by reversing the modulation technique applied during signal transmission. Receiver chain 610 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0132] Transmitter chain 612 can be configured to generate and transmit signals (e.g., control information, data, packets). Transmitter chain 612 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. 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 like phase shift keying (PSK) or quadrature amplitude modulation (QAM). Transmitter chain 612 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. Transmitter chain 612 may also include one or more antennas for transmitting the amplified signal over the air or into a wireless medium.

[0133] Figure 7 A flowchart illustrating a method according to an aspect of this disclosure is provided. The operation of the method can be implemented by a UE as described herein. In some embodiments, the UE can execute a set of instructions to control functional elements of the UE to perform the described functions.

[0134] At 701, the method may include receiving first signaling indicating a CSI-RS resource set. The operation of 701 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 4 The described aspect of the UE performing operation 701.

[0135] At 703, the method may include receiving a second signaling indicating a first port subset indication associated with a subconfiguration index of a first resource group, a second port subset indication associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group originate from the CSI-RS resource set, and the two CSI-RS resources of the resource pair originate from the first resource group and the second resource group, respectively. The operation of 703 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 4 The described aspect of the UE performing operation 703.

[0136] At 705, the method may include determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a reporting metric associated with the first resource group, a reporting metric associated with the second resource group, a reporting metric associated with the resource pair, or any combination thereof. The operation of 705 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 4 The described aspect of the UE performing operation 705.

[0137] It should be noted that the method described herein describes one possible implementation, and the operation and steps may be rearranged or otherwise modified, and other implementations are possible.

[0138] Figure 8 A flowchart illustrating a method according to an aspect of this disclosure is provided. The operation of the method can be implemented by an NE as described herein. In some embodiments, the NE can execute a set of instructions to control the functional elements of the NE to perform the described functions.

[0139] At 801, the method may include transmitting first signaling indicating a CSI-RS resource set. The operation of 801 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 6 The described aspect of the NE performing the 801 operation.

[0140] At 803, the method may include a transmission indicating a first port subset indication associated with a subconfiguration index of a first resource group, a second port subset indication associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group are from the CSI-RS resource set, and the two CSI-RS resources of the resource pair are from the first resource group and the second resource group, respectively. The operation of 803 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 6 The described aspect of the NE performing the 803 operation.

[0141] At 805, the method may include determining an index associated with a CSI report based on the first signaling and the second signaling, wherein the CSI report includes: a reporting metric associated with the first resource group, a reporting metric associated with the second resource group, a reporting metric associated with the resource pair, or any combination thereof. The operation of 805 may be performed according to the examples described herein. In some embodiments, it may be performed by, as referenced... Figure 6 The described aspect of the NE performing the operation of 805.

[0142] It should be noted that the method described herein describes one possible implementation, and the operation and steps may be rearranged or otherwise modified, and other implementations are possible.

[0143] The description herein is provided to enable those skilled in the art to make or use this disclosure. Those skilled in the art will understand that various modifications to this disclosure are possible, and that the general principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE) for wireless communication, comprising: At least one memory; and At least one processor, coupled to and configured to enable the UE to: Receive the first signaling of the Channel Status Indicator (CSI) Reference Signal RS (CSI-RS Resource Set); The system receives a second signaling instruction indicating a first port subset associated with a subconfiguration index of a first resource group, a second port subset associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group originate from the CSI-RS resource set, and the two CSI-RS resources of the resource pair originate from the first resource group and the second resource group, respectively; and The index associated with the CSI report is determined based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

2. The UE according to claim 1, wherein, The at least one processor is configured to cause the UE to: The index associated with CSI is determined based on a configured or predefined mapping between the index associated with the CSI report and the sub-configuration indexes of the first resource group and the second resource group.

3. The UE according to claim 2, wherein, The second signaling indicates one or more first port subset indications and one or more second port subset indications, and the at least one processor is configured to cause the UE to: A set of indexes associated with the CSI report is determined based on the number of sub-configuration indexes associated with the one or more first port subset indications and the number of sub-configuration indexes associated with the one or more second port subset indications.

4. The UE according to claim 2, wherein, The at least one processor is configured to cause the UE to: The index of the reporting metric associated with the first resource group is determined based on the sub-configuration index of the first resource group; The index of the reporting metric associated with the second resource group is determined based on the sub-configuration index of the second resource group; and The index of the reporting metric associated with the resource pair is determined based on both the sub-configuration index of the first resource group and the sub-configuration index of the second resource group.

5. The UE according to claim 1, wherein, The at least one processor is configured to cause the UE to: The index associated with the CSI report is determined based on the index associated with the resource pair.

6. The UE according to claim 5, wherein, The at least one processor is configured to cause the UE to: The indexes of the report metrics associated with the first resource group, the indexes of the report metrics associated with the second resource group, and the indexes of the report metrics associated with the resource pair are determined based on a configured or predefined mapping between the corresponding report metric index and the index associated with the CSI report.

7. The UE according to claim 1, wherein, The second signaling indicates one or more first port subset indications, one or more second port subset indications, and one or more indexes associated with resource pairs, and the at least one processor is configured to cause the UE to: Determine a first value derived from the number of sub-configuration indexes associated with the one or more first port subset indications and the number of sub-configuration indexes associated with the one or more second port subset indications; Determine a second value derived from the number of the one or more indexes associated with the resource pair; and A set of indexes associated with the CSI report is determined based on the larger of the first and second values.

8. The UE according to claim 7, wherein, The at least one processor is configured to cause the UE to: The index associated with the CSI report is determined from the set of indexes associated with the CSI report.

9. The UE according to claim 1, wherein, The at least one processor is configured to cause the UE to: Receive a CSI request to trigger the CSI report based on the index associated with the CSI report.

10. The UE according to claim 1, wherein, The at least one processor is configured to cause the UE to: The priority of the CSI report is determined based on the index associated with the CSI report.

11. The UE according to claim 10, wherein, Lower indexes associated with CSI reports have higher priority than higher indexes associated with CSI reports.

12. The UE according to claim 10, wherein, The at least one processor is configured to cause the UE to: First, the priority of the CSI reports is determined based on their report index; and The priority of each uplink control information UCI bit associated with the report index is determined based on the index associated with the CSI report.

13. The UE according to claim 10, wherein, The at least one processor is configured to cause the UE to: In the case where the CSI report has multiple parts, the priority of the CSI report, determined based on the index associated with the CSI report, is applied to each part.

14. The UE according to claim 10, wherein, The at least one processor is configured to cause the UE to: In cases where it is necessary to discard uplink control information (UCI) bits, some or all of the UCI bits corresponding to one or more CSI reports are discarded based on the index associated with the CSI report.

15. The UE according to claim 1, wherein, The at least one processor is configured to cause the UE to: The number of CPUs used by the CSI report, the number of active CSI-RS resources, the number of active CSI-RS ports, or any combination thereof, are determined based on the index associated with the CSI report.

16. The UE according to claim 1, wherein, The sub-configuration index of the first resource group is the same as the sub-configuration index of the second resource group.

17. The UE according to claim 16, wherein, The at least one processor is configured to cause the UE to: The index associated with the CSI report is determined based on the sub-configuration index of the first resource group.

18. A processor for wireless communication, comprising: At least one controller, coupled to at least one memory and configured to enable the at least one processor to: Receive the first signaling of the Channel Status Indicator (CSI) Reference Signal RS (CSI-RS Resource Set); The system receives a second signaling instruction indicating a first port subset associated with a subconfiguration index of a first resource group, a second port subset associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group originate from the CSI-RS resource set, and the two CSI-RS resources of the resource pair originate from the first resource group and the second resource group, respectively; and The index associated with the CSI report is determined based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

19. A network device NE for wireless communication, comprising: At least one memory; and At least one processor, coupled to the at least one memory and configured to enable the NE: Transmit the first signaling of the Channel State Information (CSI) Reference Signal RS (CSI-RS) resource set. The transmission indication includes a first port subset indication associated with a subconfiguration index of a first resource group, a second port subset indication associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group originate from the CSI-RS resource set, and the two CSI-RS resources of the resource pair originate from the first resource group and the second resource group, respectively; and The index associated with the CSI report is determined based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

20. A method performed by a user equipment (UE), comprising: Receive the first signaling of the Channel Status Indicator (CSI) Reference Signal RS (CSI-RS Resource Set); The system receives a second signaling instruction indicating a first port subset associated with a subconfiguration index of a first resource group, a second port subset associated with a subconfiguration index of a second resource group, an index associated with a resource pair, or any combination thereof, wherein the CSI-RS resources of the first resource group and the second resource group originate from the CSI-RS resource set, and the two CSI-RS resources of the resource pair originate from the first resource group and the second resource group, respectively; and The index associated with the CSI report is determined based on the first signaling and the second signaling, wherein the CSI report includes: a report metric associated with the first resource group, a report metric associated with the second resource group, a report metric associated with the resource pair, or any combination thereof.

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