Multi-RAT spectrum sharing (MRSS) spatial division multiplexing (SDM) method

Abstract

This application relates to a multi-RAT spectrum sharing (MRSS) spatial division multiplexing (SDM) method. One method includes: a user equipment (UE) sending a message to a first radio access technology (RAT) indicating UE capability information, wherein the UE capability information includes indications of: the UE performing operations related to cross-RAT measurement and reporting and / or supporting multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), wherein the UE can be configured to perform MRSS communication using the first RAT and receive RS resources from a second RAT; the UE receiving a radio resource control (RRC) configuration from the first RAT, the RRC configuration including multiple sets of reference signal (RS) resources for different RATs, wherein different RS resource ID tags or different bitmaps are assigned to each RAT in the different RATs; the UE performing channel state information (CSI) measurements on RS resources associated with the second RAT; and sending a measurement report including CSI related to cross-RAT measurements.

Description

Technical Field

[0001] Various example embodiments generally relate to apparatus, methods, and computer program products for implementing Multiple Radio Access Technology (RAT) Spectrum Sharing (MRSS) Spatial Division Multiplexing (SDM). Background Technology

[0002] Wireless networks offer significant advantages to user mobility. The ability to maintain connectivity while on the move not only benefits the user but also contributes to greater efficiency and productivity across society. As expectations for connection reliability, data speed, and lower power consumption increase, the technologies used in wireless networks must keep pace. Therefore, interest in improving wireless networking technologies remains strong. Summary of the Invention

[0003] According to various aspects of this disclosure, a method includes: a user equipment (UE) sending a message indicating UE capability information to a first network node supporting a first radio access technology (RAT); the UE receiving a radio resource control (RRC) configuration from the first RAT, the RRC configuration including multiple sets of reference signal (RS) resources for different RATs, wherein different RS resource ID tags or different bitmaps are assigned for each RAT in the different RATs; the UE performing channel state information (CSI) measurements on RS resources associated with a second RAT; and the UE sending a measurement report to the first RAT, the measurement report including CSI related to cross-RAT measurements. The UE capability information includes indications that the UE can perform operations related to cross-RAT measurements and reporting and / or support multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), and that the UE can be configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting the second RAT. The measurement report includes individual reports or combined reports.

[0004] In one aspect, the UE may be configured with an RS resource configuration for CSI measurements, the RS resource configuration including a first set of RS resources associated with a first RAT and a second set of RS resources associated with a second RAT.

[0005] In one aspect, the CSI associated with cross-RAT measurements may include indications of the second set of RS resources of the second RAT and / or the L1-reference signal received power (RSRP) of the second set of RS resources of the second RAT.

[0006] In one aspect, the individual reports may include: CRI / SSBRI and L1-reference signal received power (RSRP) values ​​for the first K RS resources in the first set in a first report message, and CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set in a second report message.

[0007] In one aspect, the combined report may include: an indication for distinguishing the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set from the CRI / SSBRI and L1-RSRP values ​​for the first K RS resources in the first set.

[0008] In one aspect, the method may further include: the UE receiving a reconfigured Transport Configuration Indicator (TCI) state from a first RAT. The TCI state may be determined by the first RAT based at least in part on cross-RAT measurement reports received from the UE.

[0009] In one aspect, the reconfigured TCI state can be based on: the top K RS resources in the first set, and / or the bottom M RS resources in the second set.

[0010] In one respect, the measurement report may be reported on the PUSCH / PUCCH configured and / or indicated by the first RAT.

[0011] In one aspect, the last M RS resources in the second set of RS resources can be a subset of the following: RS resources in the second set that have the M lowest L1-RSRP measurements among the RS resources in the second set; or a subset of the following: undetected RS resources that may have an RSRP below a threshold defined as the minimum detectable RSRP; or a subset of the following: the best M RS resources with low interference for measurement in the RS resource set. The first K RS resources in the first set of RS resources can be a subset of the following: RS resources in the first set that have the K highest L1-RSRP measurements among the RS resources in the first set.

[0012] According to various aspects of this disclosure, a user equipment (UE) includes: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the UE to perform at least any of the aforementioned methods.

[0013] According to various aspects of this disclosure, a processor-readable medium stores instructions that, when executed by at least one processor of a user equipment (UE), cause the UE to perform at least any of the aforementioned methods.

[0014] According to various aspects of this disclosure, a method includes: receiving, by a first network node supporting a first radio access technology (RAT), a message indicating UE capability information from a user equipment (UE); transmitting a radio resource control (RRC) configuration from the first RAT to the UE, the RRC configuration including multiple reference signal (RS) resource sets for different RATs, wherein different RS resource ID tags or different bitmaps are assigned for each RAT in the different RATs; and receiving, by the UE, a measurement report from the first RAT including channel state information (CSI) information related to cross-RAT measurements. The UE capability information includes indications that the UE can perform operations related to cross-RAT measurements and reporting and / or support multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), and that the UE can be configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT. The measurement report includes individual reports or combined reports.

[0015] In one aspect, the method may further include: determining the TCI state by the first RAT based at least in part on cross-RAT measurement reports received from the UE.

[0016] In one aspect, the method may further include: sending a reconfigured TCI state to the UE from the first RAT.

[0017] According to various aspects of this disclosure, a network device includes: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device to perform at least any of the aforementioned methods.

[0018] The independent claims provide the subject matter for several aspects. Additional aspects are defined in the dependent claims. Attached Figure Description

[0019] Some exemplary embodiments will now be described with reference to the accompanying drawings.

[0020] Figure 1 This is a diagram illustrating an example embodiment of wireless networking between a network system and a user equipment (UE) according to one aspect of this disclosure; Figure 2 This is a diagram illustrating an example component of a network system according to an aspect of this disclosure; Figure 3 This is a diagram illustrating a multiple radio access technology (RAT) spectrum sharing (MRSS) scenario according to one aspect of this disclosure; Figure 4 This is an illustration of an example of beam-based transmission for a 6G UE with TDM MRSS, according to one aspect of this disclosure; Figure 5 This is an illustration of an example of beam-based transmission for 5G and 6G RS assisted by SDM-MRSS, according to one aspect of this disclosure. Figure 6 This is a diagram illustrating a first example embodiment of cross-RAT measurement and reporting according to one aspect of this disclosure, as well as the use of measurements for indicating TCI; Figure 7 This is a diagram illustrating an example method for determining TCI status (beam) based at least in part on cross-RAT measurement reports received from the UE, according to one aspect of this disclosure; Figure 8 This is a diagram illustrating a second example embodiment of cross-RAT measurement and reporting according to one aspect of this disclosure, and the use of measurements for indicating TCI; and Figure 9 This is a block diagram of an example component of a UE or network device according to one aspect of this disclosure. Detailed Implementation

[0021] This disclosure relates to Multiple Radio Access Technology (RAT) Spectrum Sharing (MRSS) Spatial Division Multiplexing (SDM).

[0022] In the following description, certain specific details are set forth in order to provide a thorough understanding of the disclosed aspects. However, those skilled in the art will recognize that the aspects can be practiced without one or more of these specific details or using other methods, components, materials, etc. In other instances, well-known structures associated with transmitters, receivers, or transceivers have not been shown or described in detail to avoid unnecessarily obscuring the description of the aspects.

[0023] Throughout this specification, references to "an aspect" or "one aspect" mean that a particular feature, structure, or characteristic described in connection with that aspect is included in at least one aspect. Therefore, the phrases "in an aspect" or "in one aspect" appearing in various places throughout this specification do not necessarily refer to the same aspect. Furthermore, a particular feature, structure, or characteristic may be combined in one or more aspects in any suitable manner.

[0024] The embodiments described in this disclosure can be implemented in wireless networking devices, such as, but not limited to, devices utilizing: Global Microwave Access Interoperability (WiMAX), Global System for Mobile Communications (GSM, 2G), GSM EDGE Radio Access Network (GERAN), General Packet Radio Service (GRPS), Universal Mobile Telecommunications System based on Basic Wideband Code Division Multiple Access (W-CDMA) (UMTS, 3G), High-Speed ​​Packet Access (HSPA), Long Term Evolution (LTE), Advanced LTE, Enhanced LTE (eLTE), 5G New Radio (5G NR), 5G Advanced, 6G (and above), and 802.11ax (Wi-Fi 6), and other wireless networking systems. The term "eLTE" here refers to LTE evolution connected to a 5G core. LTE is also referred to as Evolved UMTS Terrestrial Radio Access (EUTRA) or Evolved UMTS Terrestrial Radio Access Network (EUTRAN).

[0025] This disclosure may use the term "serving network device" to refer to a network node or network device (or part thereof) serving a UE. As used herein, the terms "transmitting toward," "sending to," "receiving from," and "cooperating with" (and variations thereof) include communication that may or may not involve communication through one or more intermediate devices or nodes. The term "acquiring" (and variations thereof) includes acquiring in a first instance or re-acquiring after a first instance. The term "connection" may refer to a physical connection or a logical connection.

[0026] This disclosure uses 6G as an example of a wireless network, and may use smartphones and / or extended reality headsets as examples of UEs. It is intended and should be understood that such examples are merely illustrative, and this disclosure applies to other wireless networks and user equipment.

[0027] Figure 1 This is a diagram illustrating an example of wireless networking between network system 100 and user equipment (UE) 150. Network system 100 may include one or more network nodes 120, one or more servers 110, and / or one or more network devices 130 (e.g., test devices). Network node 120 will be described in more detail below. As used herein, the term "network apparatus" may refer to any component of network system 100, such as server 110, network node 120, network device 130, any of the foregoing components, and / or any other component of network system 100. Examples of network apparatus include, but are not limited to, apparatuses for implementing various aspects of 5G NR. This disclosure describes embodiments related to 5G NR and 6G, as well as embodiments relating to aspects defined by the 3rd Generation Partnership Project (3GPP). However, it is contemplated that embodiments related to other wireless networking technologies are included within the scope of this disclosure.

[0028] The following description provides further details of examples of network nodes. In a 6G network, a gNodeB (also known as a gNB) may include, for example, a node that provides user plane and control plane protocol termination to the UE and is connected to the 6G core (6GC) via an interface, such as according to Section 3.2 of 3GPP TS 38.300 V16.6.0 (2021-06), which is incorporated herein by reference.

[0029] gNB supports various protocol layers, such as Layer 1 (L1) - the physical layer, Layer 2 (L2) and Layer 3 (L3).

[0030] NR's Layer 2 (L2) is divided into the following sublayers: Media Access Control (MAC), Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP), among which, for example: ○ The physical layer provides a transmission channel to the MAC sublayer; ○ The MAC sublayer provides logical channels to the RLC sublayer; ○ The RLC sublayer provides RLC channels to the PDCP sublayer; ○ The PDCP sublayer provides radio bearers to the SDAP sublayer; ○ The SDAP sublayer provides Quality of Service (QoS) streams to 6G; ○ The control channels include the Broadcast Control Channel (BCCH) and the Physical Control Channel (PCCH).

[0031] Layer 3 (L3) includes, for example, Radio Resource Control (RRC) according to Section 6 of 3GPP TS 38.300 V16.6.0 (2021-06), which is incorporated herein by reference.

[0032] The gNB Central Unit (gNB-CU) includes logical nodes that host the gNB's Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), and Packet Data Convergence Protocol (PDCP) protocols, or the gNB's RRC and PDCP protocols, and controls the operation of one or more gNB Distributed Units (gNB-DUs). The gNB-CU terminates the F1 interface connected to the gNB-DU. The gNB-CU may also be referred to herein as a CU, Central Unit, Centralized Unit, or Control Unit.

[0033] A gNB Distributed Unit (gNB-DU) comprises, for example, a logical node hosting a gNB or en-gNB at the Radio Link Control (RLC), Media Access Control (MAC), and Physical (PHY) layers, and its operation is partially controlled by the gNB-CU. A gNB-DU supports one or more cells. A cell is supported by only one gNB-DU. The gNB-DU terminates the F1 interface connected to the gNB-CU. The gNB-DU may also be referred to herein as a DU or Distributed Unit.

[0034] The gNB-CU-Control Plane (gNB-CU-CP) includes, for example, logical nodes that host the RRC and control plane portion of the PDCP protocol for the gNB-CU, such as for the en-gNB or gNB. The gNB-CU-CP terminates the E1 interface connected to the gNB-CU-User Plane (gNB-CU-UP) and the F1-C interface connected to the gNB-DU.

[0035] The gNB-CU-User Plane (gNB-CU-UP) includes, for example, the user plane portion of the gNB-CU that hosts the PDCP protocol for the en-gNB, and the user plane portions of the PDCP and SDAP protocols for the gNB-CU. The gNB-CU-UP terminates the E1 interface connected to the gNB-CU-CP and the F1-U interface connected to the gNB-DU, for example, according to Section 3.1 of 3GPPTS 38.401 V16.6.0 (2021-07), which is incorporated herein by reference.

[0036] As used herein, the term "network node" may refer to any one or any combination of gNB, gNB-CU, gNB-DU, gNB-CU-CP, or gNB-CU-UP.

[0037] RAN (Radio Access Network) nodes or network nodes (such as gNB, gNB-CU, or gNB-DU, or portions thereof) can be implemented using, for example, means having at least one processor and / or at least one memory having processor-readable instructions (“programs”) configured to support and / or provide and / or process CU and / or DU-related functionalities and / or features, and / or at least one protocol (sub)layer (e.g., layer 2 and / or layer 3) of the RAN (Radio Access Network). Different functional divisions between central and distributed units are possible. The following will combine... Figure 5 Examples describing such devices and components.

[0038] The gNB-CU and gNB-DU portions can be co-located or physically separated, for example. The gNB-DU can even be further divided into, for example, two parts, one including processing equipment and the other including an antenna. The Central Unit (CU) can also be referred to as a Baseband Unit / Radio Equipment Controller / Cloud RAN / Virtual RAN (BBU / REC / C-RAN / V-RAN), Open RAN (O-RAN), or a portion thereof. The Distributed Unit (DU) can also be referred to as a Remote Radio Head / Remote Radio Unit / Radio Equipment / Radio Unit (RRH / RRU / RE / RU), or a portion thereof. In the various exemplary embodiments of this disclosure below, a network node supporting at least one of the Central Unit functions or Layer 3 protocols of a radio access network can be, for example, a gNB-CU. Similarly, a network node supporting at least one of the Distributed Unit functions or Layer 2 protocols of a radio access network can be, for example, a gNB-DU.

[0039] A gNB-CU can support one or more gNB-DUs. A gNB-DU can support one or more cells, and therefore can support the serving cell for a user equipment (UE), or candidate cells for handover, dual connectivity and / or carrier aggregation, and other procedures.

[0040] User equipment (UE) 150 may be or include wireless or mobile devices, devices having a radio interface for interacting with a RAN (Radio Access Network), smartphones, in-vehicle devices, IoT devices, or M2M devices, and other types of user equipment. Such a UE 150 may include: at least one processor; and at least one memory including program code; wherein the at least one memory and the computer program code are configured, together with the at least one processor, to enable the device to perform at least certain operations, such as an RRC connection to the RAN. Figure 5 Examples of components describing a UE are provided below. In an embodiment, UE 150 may be configured to generate messages to be transmitted to the RAN via radio (e.g., including a cell ID) (e.g., to reach and communicate with the serving cell). In an embodiment, UE 150 may generate, transmit, and receive RRC messages containing one or more RRC PDUs (Packet Data Units). Those skilled in the art will understand the RRC protocol and other processes that the UE may perform.

[0041] Continue to refer to Figure 1In an example of a 6G network, network system 100 provides one or more cells that define the coverage area of ​​network system 100. As described above, network system 100 may include a gNB of a 6G network, or may include any other means configured to control radio communications and manage radio resources within the cells. As used herein, the term "resource" may refer to radio resources such as resource blocks (RBs), physical resource blocks (PRBs), radio frames, subframes, time slots, subbands, frequency regions, subcarriers, beams, etc. In embodiments, network node 120 may be referred to as a base station.

[0042] Figure 1 Examples are provided, and only network system 100 and UE 150 are shown. Those skilled in the art will understand that network system 100 includes... Figure 1 Components not shown in the diagram, and it will be understood that other user equipment can communicate with network system 100.

[0043] Figure 2 yes Figure 1 A block diagram of example components of network system 100. A 6G network can be described as an example of network system 100, and the aspects described below should also be applicable to other types of network systems. The network system can be configured according to... Figure 1 The signals and connections shown operate to enable UE 150 to communicate with network system 100 via radio access network (RAN) 225. Additionally, the network system can be divided into user plane components and functions and control plane components and functions, as shown and described herein. Unless otherwise stated, the terms “component,” “function,” and “service” are used interchangeably herein and can refer to instructions executed by and implemented by one or more processors.

[0044] The following describes example functionality of the components. This example functionality is merely illustrative, and it should be understood that additional operations and functions can be performed by the components described herein. Furthermore, connections between components can be virtual connections based on service interfaces, allowing any component to communicate with any other component. In this way, any component can act as a service "producer" for any other component acting as a service "consumer," providing services for network functions.

[0045] For example, a core network 210 is described in the control plane of the network system. The core network 210 may include an Authentication Server Function (AUSF) 211, an Access and Mobility Management Function (AMF) 212, and a Session Management Function (SMF) 213. The core network 210 may also include a Network Slice Selection Function (NSSF) 214, a Network Open Function (NEF) 215, a Network Repository Function (NRF) 216, and a Unified Data Management Function (UDM) 217, which may include a Unified Data Repository (UDR) 224.

[0046] Additional components and functions of the core network 210 may include application functions (AF) 218, policy control functions (PCF) 219, network data analysis functions (NWDAF) 220, analytical data repository functions (ADRF) 221, management data analysis functions (MDAF) 222, and operation and management functions (OAM) 223.

[0047] The user plane includes UE 150, Radio Access Network (RAN) 225, User Plane Function (UPF) 226, and Data Network (DN) 227. RAN 225 may include a combination of Figure 1 The RAN 225 describes one or more components, such as one or more network nodes. However, the RAN 225 may not be limited to such components. The UPF 226 provides connectivity for data transmitted through the RAN 225. For example, the UPF 226 identifies services from service providers, internet access, and third-party services.

[0048] AMF 212 handles connectivity and mobility tasks. AUSF 211 receives authentication requests from AMF 212 and interacts with UDM 217 to authenticate and verify network responses to determine successful authentication. SMF 213 performs Packet Data Unit (PDU) session management and manages session context with UPF 226.

[0049] NSSF 214 can select a Network Slice Instance (NSI) and determine the allowed Network Slice Selection Auxiliary Information (NSSAI). This selection and determination are used to set up AMF 212 to provide services to UE 150. NEF 215 ensures third-party access to network services to create private network services. NRF 216 acts as a repository for storing network functions to allow functions to register and discover each other.

[0050] UDM 217 generates authentication vectors for use by AUSF 211 and AMF 212 and provides user identity processing. UDM 217 can connect to UDR 224, which stores data associated with authentication, applications, etc. AF 218 provides application services (e.g., streaming services) to users. PCF 219 provides policy control functions. For example, PCF 219 can assist in network slicing and mobility management, as well as provide Quality of Service (QoS) and accounting functions.

[0051] NWDAF 220 collects data (e.g., from UE 150 and network systems) to perform network analytics and provide insights into the capabilities that leverage analytics when providing services. ADRF 221 allows consumers to store, retrieve, and remove data and analytics. MDAF 222 provides additional data analytics services for network functions. OAM 223 provides provisioning and management processing capabilities to manage elements in or connected to the network (e.g., UE 150, network nodes, etc.).

[0052] Figure 2 These are merely examples of components of a network system, and variations are contemplated within the scope of this disclosure. In embodiments, the network system may include... Figure 2 Other components not shown. In embodiments, the network system may not include... Figure 2 Each component is shown. In embodiments, components and connections can utilize [the following]. Figure 2 The connections shown are implemented using different connections. These and other embodiments are considered to be within the scope of this disclosure.

[0053] Reference Figure 3This illustrates a Multiple Radio Access Technology (RAT) Spectrum Sharing (MRSS) scenario. MRSS can consider the deployment of two different RATs sharing spectrum resources. In one example, a first RAT (e.g., a 6G NW node) 320 and a second RAT (e.g., a 5G / NR NW node) 330 are co-located and use the same beamcodebook. Here, the example primarily concerns a single-vendor scenario, where different MRSS deployment scenarios with Carrier Aggregation (CA) or Dual Connectivity (DC) are possible. In one example of CA, the PCell could be a 6G-only cell providing primary connectivity for core functions, while the MRSS cell is an SCell that will provide additional capacity or coverage while sharing spectrum with 5G NR. In another example of CA, the MRSS cell could be a primary cell (PCell) shared between 5G NR and 6G, and a secondary cell (SCell) that is a 6G-only cell that can provide additional capacity to the MRSS cell. In one example of DC, advanced UE types (e.g., type 3) are connected to both 5G and 6G simultaneously, and MRSS can be supported as a PSCell (primary-secondary cell), i.e., acting as the primary cell in the secondary node (e.g., a 6G NW node) to which UEs 310 and 340 connect for data transmission and reception. However, the disclosed techniques can also be applied to multi-vendor scenarios, where schedulers from different vendors are considered, assuming low-latency feedback between schedulers.

[0054] The first RAT can serve the 6G UE in the same time-frequency resources as the second RAT serving the 5G UE. The NW can coordinate and control the operation of the first and second RATs and facilitate the sharing of spectrum resources between 6G and 5G. For example, depending on the control signaling and data service requirements of 6G and / or 5G, the NW can consider allocating a first number of resources to the 5G NR and allocating the remaining resources to 6G. Nevertheless, the coexistence of 5G and 6G UEs in the same spectrum presents different challenges: 1) 5G may always require RS transmission even if no 5G data is transmitted. The 5G RS resources required in the DL may include, for example, SSBs for measurement, synchronization, etc. To avoid introducing interference between the coexisting 6G and 5G NRs, 6G RS resources for control and data can be transmitted in different time and frequency resources of 5G (e.g., non-overlapping RBs and / or time slots / OFDM symbols). Another aspect is that 6G resources for control and data can also be scheduled in symbols that overlap with 5G RS symbols, and rate matching techniques are needed here to avoid allocating 6G control and / or data in the same 5G RS resources. Rate matching configuration is not always flexible and may require higher-layer signaling such as RRC for configuration and reconfiguration. 2) Scheduling of 5G / 6G data in TDM or FDM requires strict coordination between 5G and 6G schedulers, which may not always be feasible. For example, 5G and 6G schedulers may not be implemented in the same NW component; for example, the 5G scheduler may remain at the DU, while the 6G scheduler may move to the cloud after cloud-native RAN deployment. Therefore, 5G scheduler decisions may be reported to the 6G scheduler with some delay, and vice versa, making real-time coordination difficult to handle. Real-time coordination is also typically challenging for joint 5G / 6G schedulers because the 5G / 6G control channels may follow different timelines, making concurrent decision-making difficult to handle in practice. 3) NES aspect: Replicating RS resources for 5G and 6G significantly increases RS overhead and can also potentially increase total power consumption. On one hand, the NW (considering both the first RAN and the second RAT) needs to transmit more RS resources, which may hinder 6G energy targets. On the other hand, 6G UEs may need to perform the same amount of measurements as in 5G, which may determine the maintenance power consumption of the 5G UE, thus providing no 6G advantage from an energy perspective. Given these challenges, the disclosed systems and methods provide a solution that incorporates spatial division multiplexing (SDM) into MRSS operation.

[0055] refer to Figure 3 The diagram shows an example of beam-based transmission for a 6G UE with TDM MRSS. Figure 3One approach is illustrated where 5G and 6G beam management are independent and beam operations are not coordinated, requiring resource duplication to avoid interference between 5G and 6G RS transmissions. Similar limitations can be applied to 5G and / or 6G data transmission.

[0056] refer to Figure 5 The diagram illustrates an example of beam-based transmission for 5G and 6G RS assisted by SDM-MRSS. 5G and 6G BSs can coordinate beamforming operations and transmit beams from different RATs that limit interference, coordinate beam directions in time and / or frequency, or coordinate beam directions by adjusting their transmit power and / or beamforming modes. The disclosed technique introduces a feedback mechanism that enables 6G to utilize spatially separated 5G resources, thereby facilitating SDM for multiple RATs, including codebook-based beamforming for determining non-interfering beams.

[0057] Figure 6 This is a diagram illustrating example operations for Multi-RAT Spectrum Sharing (MRSS) Spatial Division Multiplexing (SDM), which are performed by... Figure 6 The components shown at the top perform the operation, including the UE and one or more network devices (e.g., network nodes, gNBs) supporting the first radio access technology (RAT) and the second RAT. Such components can be, for example, combined with... Figure 1 and Figure 2 The same component described above or otherwise.

[0058] At operation 501, the first RAT receives a UE capability message. The capability message includes the ability to perform operations related to cross-RAT measurement and reporting, as well as indications of support for beam-based MRSS communication. For example: Cross-RAT measurement and reporting, indicating the UE's ability to perform operations related to cross-RAT measurement and reporting; and / or Support for MRSS with SDM indicates the UE capability to support MRSS communication with SDM features.

[0059] Assume that information about the configured RS of the second RAT is available at the first RAT. This exchange can be performed via the interface between the first and second RATs for the RRC-configured RS provided by the second RAT.

[0060] At operation 502, the UE receives an RRC configuration containing a CSI-ResourceConfig from a first RAT. This CSI-ResourceConfig includes multiple resource sets for different RATs, where a CSI-ReportConfig indicates the resource set ID to be reported to the first RAT. For example, the first RAT may configure the UE to use MRSS communication with the first RAT (e.g., a 6G network node) and monitor RS resources (e.g., CSI-RS, SSB) from a second RAT (e.g., a 5G network node).

[0061] In one variant, CSI-ReportConfig indicates the resource set ID 2 for channel measurements associated with the second RAT that are to be reported to the first RAT.

[0062] For example: CSI-RS-ResourceSet Id 1: The first set of CSI-RS resources associated with the first RAT.

[0063] CSI-RS-ResourceSet Id 2: The second set of CSI-RS resources associated with the second RAT.

[0064] In another example, a first set of CSI-RS resources associated with the first RAT is configured with a bitmap (i.e., SSBToMeasure) to indicate which beam is measured in the SMTC window. Then, a second set of CSI-RS resources associated with the second RAT has another bitmap associated with SSBToMeasure, without any overlap in the spatial domain.

[0065] At operation 503, the second RAT sends the configured RS resources to the UE. The UE uses these RS resources for measurement.

[0066] RS resources can be sent by the second RAT for other UEs, or can be specifically triggered to report to the second RAT.

[0067] For example, the second RAT corresponds to the RS resource set associated with the second RAT to send RS. Other transmissions from the first RAT do not overlap in the same RS resource set associated with the second RAT, but the transmissions may not be specific to the 6G UE, but are required by other 5G UEs.

[0068] At operation 504, the UE performs measurements related to the second RAT RS resources and prepares a report to be sent to the first RAT.

[0069] For example, the UE can perform measurements on the second set of RS resources associated with the second RAT based on the received configuration or the identifier of the second set of RS resources. The UE can determine the beam information and / or L1-RSRP associated with the RS resource set.

[0070] In one variant, beam information can be the RS indicator (e.g., conventional CRI / SSBRI) of the last M RS resources used for channel measurement, which have a lower RSRP and are measured in the RS resource set.

[0071] In another variation, beam information can be an RS indicator for undetected RS resources (e.g., conventional CRI / SSBRI), where the undetected RS resources have an RSRP below a threshold that defines a minimum detectable RSRP.

[0072] In the third variant, the beam information can be an RS indicator (e.g., conventional CRI / SSBRI) of the best M RS resources for interference measurement with low interference in the RS resource set.

[0073] At operation 505, the UE sends a report of RS measurements to the first RAT. In various aspects, the UE may report RS measurements on the Physical Uplink Shared Channel (PUSCH) and / or Physical Uplink Control Channel (PUCCH), as configured and / or indicated by the first RAT. For example, the UE may send a report to the first RAT containing beam information and / or L1-RSRP, including a second set of RS resources, based on an initial configuration and / or a received subsequent activation / instruction.

[0074] For example, the reported measurements may include: the CRI / SSBRI and L1-RSRP values ​​of the last M RS resources in the second set.

[0075] At operation 506, the first RAT transmits the configured RS resources. These RS resources are used by the UE for measurement. The first RAT receives reports and can reconfigure the first set of RS resources to overlap with the last M RS resources in the second set of RS resources associated with the second RAT reported by the UE (see [link to operation 506]). Figure 5 ).

[0076] In each aspect, the UE receives a first set of RS resources associated with the first RAT, performs measurements, and reports the measurements to the first RAT (after the conventional CSI report for the first K RS resources).

[0077] RS resources are resources used to transmit reference signals for Channel State Information (CSI) measurements. CSI measurements also include beam measurements. In the context of beam measurements, RS resources can be used to transmit different beams from a first node supporting a first RAT and / or from a second node supporting a second RAT, and the UE is configured to measure different beam qualities by measuring different RS resources.

[0078] At operation 507, the UE sends a report of RS measurements to the first RAT.

[0079] For example, the reported measurements may include: the CRI / SSBRI and L1-RSRP values ​​of the top K RS resources in the first set.

[0080] In one variant, the UE can combine and reuse both RS measurements associated with the first RAT and RS measurements associated with the second RAT in a single report.

[0081] In this case, a bitmap or indicator can be used to distinguish the CRI / SSBRI and L1-RSRP values ​​of the last M RS resources in the second set from the CRI / SSBRI and L1-RSRP values ​​of the first K RS resources in the first set.

[0082] At operation 508, the first RAT determines the TCI state (beam) based at least in part on cross-RAT measurement reports received from the UE.

[0083] At operation 509, the first RAT sends an indication to the UE based on a determination step (i.e., at operation 508). This indication may include a TCI indication or a TCI activation indication following a cross-RAT measurement. For example, the UE uses the indicated TCI (beam) to receive data and control information from the first RAT.

[0084] Figure 6 The operations described are merely examples, and variations are contemplated within the scope of this disclosure. In embodiments, the operations may include... Figure 6 Other operations not shown. In embodiments, operations may not include... Figure 6 Each operation is shown. In an embodiment, the operation can be in conjunction with... Figure 6 Different sequences of implementation are shown. These and other embodiments are considered to be within the scope of this disclosure.

[0085] The operation is described below from the UE's perspective. From this perspective, one approach may include: the user equipment (UE) sending (e.g., ...) to a first network node supporting a first radio access technology (RAT). Figure 6Operation 501) indicates UE capability information, wherein the UE capability information includes indications of: the UE's ability to perform operations related to cross-RAT measurement and reporting and / or support multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), wherein the UE can be configured to perform MRSS communication using a first RAT and receive RS resources from a second network node supporting a second RAT; and the UE receives a Radio Resource Control (RRC) configuration from the first RAT, which includes multiple reference signal (RS) resource sets for different RATs, wherein different RS resource ID tags or different bitmaps are assigned to each RAT in the different RATs (e.g., Figure 6 Operation 502); the UE performs channel state information (CSI) measurement on the RS resources associated with the second RAT (e.g., Figure 6 (Operations 504-505); and the UE sends a measurement report to the first RAT, which includes CSIs related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports (e.g., Figure 6 (Operation 506-507).

[0086] The operation is described below from the perspective of a network device. From this perspective, a method may include: a first network node supporting a first radio access technology (RAT) receiving a message from a user equipment (UE) indicating UE capability information (e.g., Figure 6 Operation 501), wherein the UE capability information includes indications of the following: the UE's ability to perform operations related to cross-RAT measurement and reporting and / or support multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), wherein the UE can be configured to perform MRSS communication using a first RAT and receive RS resources from a second network node supporting a second RAT; and to send a radio resource control (RRC) configuration from the first RAT to the UE, the RRC configuration including multiple reference signal (RS) resource sets for different RATs, wherein different RS resource ID tags or different bitmaps are assigned to each RAT in the different RATs (e.g., Figure 6 (Operation 502); The UE receives a measurement report from the first RAT, including Channel State Information (CSI) information related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports (e.g., Figure 6 (Operation 502).

[0087] Figure 7 This is a flowchart illustrating an example method 602 for determining the TCI state (beam) based at least in part on cross-RAT measurement reports received from the UE. Figure 7 In the example shown, the determination can be achieved by considering the following sequence of steps: At operation 604, the algorithm initially finds a common set of RS resources between the first K RS resources in the first set and the last M RS resources in the second set.

[0088] At operation 606, the algorithm determines whether any public RS resources exist.

[0089] At operation 614, in the absence of public RS resources, the algorithm provides an indication to use the current TCI for MRSS without activating the SDM feature. A new set of measurements across RATs may be required before the algorithm is applied a second time.

[0090] At operation 608, if a common RS resource exists, the algorithm iterates through the first K RS resources. At operation 610, the algorithm determines whether the selected RS resource is one of the last M RS resources.

[0091] If so, at operation 612, the algorithm returns the selected TCI state for use in an MRSS with SDM characteristics. Otherwise, at operation 616, the algorithm selects the next RS resource from the first K RS resources.

[0092] Figure 8 This is a diagram illustrating example operations for Multi-RAT Spectrum Sharing (MRSS) Spatial Division Multiplexing (SDM). These operations are performed by... Figure 8 The components shown at the top perform the operation, including the UE and one or more network devices (e.g., network nodes, gNBs) supporting the first radio access technology (RAT) and the second RAT. Such components can be, for example, combined with... Figure 1 and Figure 2 The same component described above or otherwise.

[0093] Figure 8 Operation 701 and Figure 6 The operation is the same as 501.

[0094] At operation 702, the first RAT sends an RRC configuration and an RS resource configuration for channel measurement to the UE. The RS resource configuration includes: a first set of RS resources associated with the first RAT, a second set of RS resources associated with the second RAT, a CSI reporting configuration for reporting RS resource information associated with the second RAT, and a configuration for events related to cross-RAT measurements.

[0095] Figure 8 Operation 703 and Figure 6 The operation is the same as 503.

[0096] At operation 704, the UE detects an event related to cross-RAT measurement.

[0097] At Operation 705, the UE initiates a cross-RAT measurement report based on an event configured by the NW: a. Event 1 is when the RSRP of a specific RS resource from the second RAT becomes below the minimum RSRP threshold, and / or b. Event 2: A new undetected RS resource exists in the second set of RS resources.

[0098] Figure 8 Operations 706 and 707 with Figure 6 Operations 506 and 507 are the same.

[0099] At operation 708, the first RAT determines the TCI state based on at least the following: the top K RS resources in the first set of RS resources and the bottom M RS resources in the second set of RS resources.

[0100] At operation 709, the first RAT sends an indication of the TCI status to the UE based on cross-RAT measurements.

[0101] Figure 8 The operations described are merely examples, and variations are contemplated within the scope of this disclosure. In embodiments, the operations may include... Figure 8 Other operations not shown. In embodiments, operations may not include... Figure 8 Each operation is shown. In an embodiment, the operation can be in conjunction with... Figure 8 Different sequences of implementation are shown. These and other embodiments are considered to be within the scope of this disclosure.

[0102] Now for reference Figure 9 This diagram illustrates a block diagram of example components of a UE or network device. The device includes an electronic storage device 810, a processor 820, a memory 850, and a network interface 840. The various components can be communicatively coupled to each other. The processor 820 can be and may include any type of processor, such as a single-core central processing unit (CPU), a multi-core CPU, a microprocessor, a digital signal processor (DSP), a system-on-a-chip (SoC), or any other type of processor. The memory 850 can be a volatile type of memory, such as RAM, or a non-volatile type of memory, such as NAND flash memory. The memory 850 includes processor-readable instructions executable by the processor 820 to cause the device to perform various operations, including those mentioned herein, such as... Figure 3 The operation.

[0103] Electronic storage device 810 can be and includes any type of electronic storage device for storing data, such as hard disk drives, solid-state drives, and / or optical disks, as well as other types of electronic storage devices. Electronic storage device 810 stores processor-readable instructions for causing the device to perform its operations, and stores data associated with such operations, such as data related to the 5G NR standard, and other data. Network interface 840 can implement wireless networking technologies, such as 5G NR and / or other wireless networking technologies.

[0104] Figure 9 The components shown are merely examples, and those skilled in the art will understand that the apparatus includes other components not shown, and may include multiples of any of the components shown. These and other embodiments are considered to be within the scope of this disclosure.

[0105] Other embodiments of this disclosure include the following examples.

[0106] Example 1.1. A user equipment (UE) includes: A component for transmitting a message indicating UE capability information from a user equipment (UE) to a first network node supporting a first radio access technology (RAT), wherein the UE capability information includes indications of the UE's ability to perform operations related to cross-RAT measurement and reporting and / or support multi-RAT spectrum sharing (MRSS) communication using spatial division multiplexing (SDM), wherein the UE is configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT. Components for receiving Radio Resource Control (RRC) configurations from the first RAT by the UE, the RRC configurations including multiple Reference Signal (RS) resource sets for different RATs, wherein different RS resource ID tags or different bitmaps are assigned to each of the different RATs; Components for performing channel state information (CSI) measurements by the UE on RS resources associated with the second RAT; and A component for sending a measurement report from the UE to the first RAT, the measurement report including CSI related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports.

[0107] Example 1.2. A user equipment (UE) according to Example 1.1, wherein the UE is configured with an RS resource configuration for CSI measurement, the RS resource configuration comprising a first set of RS resources associated with the first RAT and a second set of RS resources associated with the second RAT.

[0108] Example 1.3. According to the User Equipment (UE) of Example 1.1, wherein the CSI associated with cross-RAT measurement includes an indication of the following: the second set of RS resources of the second RAT and / or the L1-reference signal received power (RSRP) of the second set of RS resources of the second RAT.

[0109] Example 1.4. According to the User Equipment (UE) described in Example 1.1, the separate report includes: The first report message includes the CRI / SSBRI and L1-reference signal received power (RSRP) values ​​for the first K RS resources in the first set, and The second report message contains the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set.

[0110] Example 1.5. According to the user equipment (UE) described in Example 1.1, the combined report includes: An indication used to distinguish the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set from the CRI / SSBRI and L1-RSRP values ​​for the first K RS resources in the first set.

[0111] Example 1.6. The user equipment (UE) according to Example 1.1 further includes: A component for receiving a reconfigured Transport Configuration Indicator (TCI) state from the first RAT by the UE, wherein the TCI state is determined by the first RAT at least in part based on the cross-RAT measurement report received from the UE.

[0112] Example 1.7. User equipment (UE) according to Example 1.6, wherein the reconfigured TCI state is based on at least one of the following: The top K RS resources in the first set, or The second set contains the last M ranked RS resources.

[0113] Example 1.8. User equipment (UE) according to Example 1.1, wherein the measurement report is reported on the PUSCH / PUCCH configured and / or indicated by the first RAT.

[0114] Example 1.9. According to any one of the preceding examples, the last M RS resources in the second set of RS resources are a subset of: RS resources in the second set having M lowest L1-RSRP measurements among the RS resources in the second set; or a subset of: undetected RS resources, wherein the undetected RS resources have an RSRP below a threshold defining the minimum detectable RSRP; or a subset of: the best M RS resources with low interference for measuring interference measurements within the set of RS resources. The first K RS resources in the first set of RS resources are a subset of RS resources having the K highest L1-RSRP measurements.

[0115] Example 1.10. A user equipment (UE) comprising: At least one processor; and At least one memory storing instructions that, when executed by the at least one processor, cause the UE to perform at least one of Examples 1.1 to 1.9.

[0116] Example 1.11. A processor-readable medium storing instructions that, when executed by at least one processor of a user equipment (UE), cause the UE to perform at least one of Examples 1.1 to 1.9.

[0117] Example 1.12. A network device comprising: A component that receives a message indicating UE capability information from a first network node supporting a first radio access technology (RAT), wherein the UE capability information includes indications of the following: the UE's ability to perform operations related to cross-RAT measurement and reporting and / or support multi-RAT spectrum sharing (MRSS) communication using spatial division multiplexing (SDM), wherein the UE is configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT; A component for transmitting a radio resource control (RRC) configuration from the first RAT to the UE, the RRC configuration including multiple reference signal (RS) resource sets of different RATs, wherein a different RS resource ID label or a different bitmap is assigned to each of the different RATs; A component for receiving, by the UE, a measurement report from the first RAT, including channel state information (CSI) information related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports.

[0118] Example 1.13. The network device according to Example 1.12 further includes: A component for determining the TCI status by the first RAT based at least in part on the cross-RAT measurement report received from the UE.

[0119] Example 1.14. The network apparatus according to Example 1.13 further includes: A component for sending the reconfigured TCI status from the first RAT to the UE.

[0120] Example 1.15. A network device comprising: At least one processor; and At least one memory storing instructions that, when executed by the at least one processor, cause the network device to perform at least the method according to any one of Examples 1.12 to 1.14.

[0121] The embodiments and aspects disclosed herein are examples of this disclosure and may be embodied in various forms. For example, although some embodiments herein are described as separate embodiments, each embodiment herein may be combined with one or more other embodiments herein. The specific structural and functional details disclosed herein should not be construed as limiting, but rather serve as the basis for the claims and as a representative basis for teaching those skilled in the art to employ this disclosure differently with virtually any suitable detailed structure. Throughout the description of the accompanying drawings, the same reference numerals may refer to similar or identical elements.

[0122] The phrases “in one respect,” “in all respects,” “in all aspects,” “in some respects,” or “in other respects” may each refer to one or more of the same or different respects under this disclosure. The phrase “multiple” may refer to two or more.

[0123] The phrases “in an embodiment,” “in multiple embodiments,” “in various embodiments,” “in some embodiments,” or “in other embodiments” may each refer to one or more of the same or different embodiments according to this disclosure. The phrase “A or B” means “(A), (B), or (A and B).” The phrase “at least one of A, B, or C” means “(A); (B); (C); (A and B); (A and C); (B and C); or (A, B, and C).”

[0124] Any method, program, algorithm, or code described herein can be translated into or expressed in a programming language or computer program. As used herein, the terms “programming language” and “computer program” each include any language used to specify instructions to a computer, and include (but are not limited to) the following languages ​​and their derivatives: assembly language, Basic, batch files, BCPL, C, C++, Delphi, Fortran, Java, JavaScript, machine code, operating system command languages, Pascal, Perl, PL1, Python, scripting languages, Visual Basic, meta-languages ​​that specify their own programs, and all first-, second-, third-, fourth-, fifth-, and more generation computer languages. Databases and other data schemas, and any other meta-languages, are also included. There is no distinction between languages ​​that are interpreted, compiled, or use compiled and interpreted methods. There is no distinction between compiled and source versions of a program. Therefore, a reference to a program in which a programming language may exist in more than one state (such as source, compiled, object, or linked) is a reference to any and all such states. A reference to a program may encompass the actual instructions and / or the intent of those instructions.

[0125] While various aspects of this disclosure have been shown in the accompanying drawings, they are not intended to be limited thereto, as the scope of this disclosure is intended to be as broad as would be permitted in the art, and the specification is read in the same manner. Therefore, the above description should not be construed as restrictive, but merely as an example of particular aspects. Other modifications within the scope and spirit of the appended claims will be contemplated by those skilled in the art.

[0126] Furthermore, the various implementations of this disclosure can be described with reference to the following terms, and their features can be combined in any reasonable manner.

[0127] Clause 1. A method comprising: sending a message indicating UE capability information to a first network node supporting a first radio access technology (RAT), wherein the UE capability information includes indications of: the UE performing operations related to cross-RAT measurement and reporting and / or supporting multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), wherein the UE is configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT; receiving a radio resource control (RRC) configuration from the first RAT by the UE, the RRC configuration including multiple sets of reference signal (RS) resources for different RATs, wherein different RS resource ID tags or different bitmaps are assigned for each of the different RATs; performing channel state information (CSI) measurements on RS resources associated with the second RAT by the UE; and sending a measurement report to the first RAT by the UE, the measurement report including CSI related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports.

[0128] Clause 2. The method according to Clause 1, wherein the UE is configured with an RS resource configuration for CSI measurement, the RS resource configuration comprising a first set of RS resources associated with the first RAT and a second set of RS resources associated with the second RAT.

[0129] Clause 3. The method according to Clause 1, wherein the CSI associated with the cross-RAT measurement includes an indication of the L1-reference signal received power (RSRP) of the second set of RS resources of the second RAT and / or the second set of RS resources of the second RAT.

[0130] Clause 4. The method according to Clause 1, wherein the separate report comprises: CRI / SSBRI and L1-reference signal received power (RSRP) values ​​for the first K RS resources in the first set in a first report message, and CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set in a second report message.

[0131] Clause 5. The method according to Clause 1, wherein the combined report includes: an indication for distinguishing the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set from the CRI / SSBRI and L1-RSRP values ​​for the first K RS resources in the first set.

[0132] Clause 6. The method according to Clause 1 further comprises: the UE receiving a reconfigured Transport Configuration Indicator (TCI) state from the first RAT, wherein the TCI state is determined by the first RAT at least in part based on the cross-RAT measurement report received from the UE.

[0133] Clause 7. The method according to Clause 6, wherein the reconfigured TCI state is based on at least one of the following: the top K RS resources in the first set, or the bottom M RS resources in the second set.

[0134] Clause 8. The method described in Clause 1, wherein the measurement report is reported on a PUSCH / PUCCH configured and / or instructed by the first RAT.

[0135] Clause 9. The method according to any one of the preceding clauses, wherein the last M RS resources in the second set of RS resources are a subset of the following: RS resources in the second set having M lowest L1-RSRP measurements among the RS resources in the second set; or a subset of the following: undetected RS resources, wherein the undetected RS resources have RSRPs below a threshold defining the minimum detectable RSRP; or a subset of the following: the best M RS resources for measuring interference measurements with low interference in the set of RS resources, wherein the first K RS resources in the first set of RS resources are a subset of the following: RS resources in the first set having K highest L1-RSRP measurements among the RS resources in the first set.

[0136] Clause 10. A user equipment (UE) comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the UE to perform at least one method according to any one of Clauses 1 to 9.

[0137] Clause 11. A processor-readable medium storing instructions that, when executed by at least one processor of a user equipment (UE), cause the UE to perform at least the method according to any one of Clauses 1 to 9.

[0138] Clause 12. A method comprising: receiving, by a first network node supporting a first radio access technology (RAT), a message from a user equipment (UE) indicating UE capability information, wherein the UE capability information includes indications of: the UE performing operations related to cross-RAT measurement and reporting and / or supporting multi-RAT spectrum sharing (MRSS) communication utilizing spatial division multiplexing (SDM), wherein the UE is configurable to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT; transmitting a radio resource control (RRC) configuration from the first RAT to the UE, the RRC configuration including multiple sets of reference signal (RS) resources for different RATs, wherein different RS resource ID tags or different bitmaps are assigned for each of the different RATs; and receiving, by the UE, a measurement report from the first RAT including channel state information (CSI) information related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports.

[0139] Clause 13. The method according to Clause 12 further includes: determining the TCI status by the first RAT based at least in part on the cross-RAT measurement report received from the UE.

[0140] Clause 14. The method according to Clause 13 further includes: sending a reconfigured TCI status from the first RAT to the UE.

[0141] Clause 15. A network device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device to perform at least one method according to any one of Clauses 12 to 14.

Claims

1. A method for communication, comprising: A message indicating UE capability information is sent from a user equipment (UE) to a first network node supporting a first radio access technology (RAT), wherein the UE capability information includes indications of the following: the UE's ability to perform operations related to cross-RAT measurement and reporting and / or support multi-RAT spectrum sharing (MRSS) communication using spatial division multiplexing (SDM), wherein the UE is configured to perform MRSS communication using the first RAT and receive RS resources from a second network node supporting a second RAT; The UE receives a Radio Resource Control (RRC) configuration from the first RAT, the RRC configuration including multiple Reference Signal (RS) resource sets for different RATs, wherein a different RS resource ID tag or a different bitmap is assigned to each of the different RATs; The UE performs channel state information (CSI) measurements on RS resources associated with the second RAT; as well as The UE sends a measurement report to the first RAT, the measurement report including CSI related to cross-RAT measurements, wherein the measurement report includes individual reports or combined reports.

2. The method of claim 1, wherein the UE is configured with an RS resource configuration for CSI measurement, the RS resource configuration comprising a first set of RS resources associated with the first RAT and a second set of RS resources associated with the second RAT.

3. The method of claim 1, wherein the CSI associated with the cross-RAT measurement includes an indication of the L1-reference signal received power (RSRP) of the second set of RS resources of the second RAT and / or the second set of RS resources of the second RAT.

4. The method of claim 1, wherein the separate report comprises: The first report message includes the CRI / SSBRI and L1-reference signal received power (RSRP) values ​​for the first K RS resources in the first set, and The second report message contains the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set.

5. The method of claim 1, wherein the combined report comprises: An indication used to distinguish the CRI / SSBRI and L1-RSRP values ​​for the last M RS resources in the second set from the CRI / SSBRI and L1-RSRP values ​​for the first K RS resources in the first set.

6. The method according to claim 1, further comprising: The UE receives a reconfigured Transport Configuration Indicator (TCI) state from the first RAT, wherein the TCI state is determined by the first RAT at least in part based on the cross-RAT measurement report received from the UE.

7. The method of claim 6, wherein the reconfigured TCI state is based on at least one of the following: The top K RS resources in the first set, or The second set contains the last M ranked RS resources.

8. The method of claim 1, wherein the measurement report is reported on a PUSCH / PUCCH configured and / or indicated by the first RAT.

9. The method according to any one of the preceding claims, wherein the last M RS resources in the second set of RS resources are a subset of: RS resources in the second set having M lowest L1-RSRP measurements among the RS resources in the second set; or a subset of: undetected RS resources, wherein the undetected RS resources have an RSRP below a threshold defining a minimum detectable RSRP; or a subset of: the best M RS resources with low interference for measuring interference measurements in the set of RS resources. The first K RS resources in the first set of RS resources are a subset of RS resources having the K highest L1-RSRP measurements.

10. A user equipment (UE), comprising: At least one processor; as well as At least one memory storing instructions that, when executed by the at least one processor, cause the UE to perform at least the method according to any one of claims 1 to 9.

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