Recording to departure reporting and TCI status

Abstract

A method regarding departure reporting and TCI status, the method comprising deactivating, by a User Equipment (UE), at least one candidate Transmission Configuration Indicator (TCI) status associated with at least one Reference Signal (RS) based on at least one of the following determinations: for the at least one RS corresponding to the TCI status, the UE has reported a departure message; the UE has performed signaling to overreport the departure message based on determining that a criterion of the departure report is satisfied for the at least one RS; the UE has triggered transmission of the departure report message based on the criterion of departure report determined for the at least one RS; the criterion of departure reporting is satisfied for at least one RS; or the UE reports the departure report information by not including at least one RS in the departure report message.

Description

Technical Field

[0001] Various example embodiments typically involve wireless networking, and in particular, configurations for conditional low-layer triggered mobility (LTM). Background Technology

[0002] Wireless networking offers significant advantages to user mobility. The ability to stay connected while on the move not only benefits users but also contributes to greater efficiency and productivity across society. As user expectations for connection reliability, data speed, and device battery life increase, the technologies used for wireless networking must keep pace. Therefore, there is ongoing interest in improving wireless networking technologies. Summary of the Invention

[0003] The subject matter of the independent claims is provided in several respects. Other aspects are defined in the dependent claims.

[0004] According to an aspect of this disclosure, a method includes a user equipment (UE) deactivating at least one candidate Transport Configuration Indicator (TCI) state associated with at least one reference signal (RS) based on at least one of the following determinations: the UE has reported a departure message for at least one RS corresponding to a Transport Configuration Indicator (TCI) state; the UE has performed signaling to report a departure message based on the criterion for determining a departure report being met for at least one RS; the UE has triggered the transmission of a departure report message based on the departure report criterion determined for at least one RS; the departure report criterion is met for at least one RS; or the UE reports departure report information by omitting at least one RS from the departure report message. The at least one RS corresponds to at least one TCI state.

[0005] In one aspect of the method, deactivating at least one TCI state includes at least one of the following: removing at least one TCI state from the list of active TCI states; having the UE maintain at least one TCI state in the list of active TCI states and not continuing to maintain tracking of: downlink (DL) time and / or frequency synchronization with the RS associated with at least one TCI state; or having the UE not require the UE to continue and / or not continue to maintain tracking of: DL time and / or frequency synchronization with the RS associated with at least one TCI state.

[0006] In one aspect of the method, the UE sends an outage report message for at least one RS for a candidate cell, and the TCI state associated with the RS for the candidate cell remains known for a predetermined time period after the report.

[0007] In one aspect of the method, deactivating at least one TCI state is based on at least one of the following: determining that an exit report message has been generated, determining that an exit report message has been successfully provided, determining that an exit report message has been sent at least once, or determining that an exit report message has been acknowledged.

[0008] In one aspect of the method, the deactivation of the TCI state associated with the at least one RS is associated with a timer or time period, and off-site reporting conditions are determined for the at least one RS.

[0009] In one aspect of this method, the timer is configured by the network, or the timer is configured for a predetermined time period. The timer is started based on the UE determining that at least one of the following has been initiated: an departure report message has been generated, an departure report message has been successfully provided, an departure report message has been sent at least once, an departure report message has been acknowledged, or the departure report criteria for at least one RS corresponding to at least one TCI state are met, or a predetermined number of time slots later than the time slot determined above.

[0010] In one aspect of the method, the method further includes determining to deactivate at least one TCI state when a predetermined number of sent reports are reached.

[0011] In one aspect of the method, the method further includes performing periodic reporting when a reporting event has been triggered for at least one RS.

[0012] In one aspect of the method, the method further includes the UE sending an indication to the serving cell regarding the capability to support TCI deactivation based on off-site reporting information for candidate TCI states.

[0013] In one aspect of the method, the indication further includes at least one of the following: the maximum and / or minimum number of candidate TCI states per candidate cell; or the maximum and / or minimum number of candidate TCI states across all candidate cells.

[0014] In one aspect of the method, the maximum number of TCI states used for deactivation based on the departure report can be configured by the network device. The UE deactivates a number of TCI states associated with RSs reported in the departure report message. The number of TCI states used for deactivation is selected based on at least one of the following: based on measurement quality, associated with the first N RSs / last N RSs reported in the report, or the maximum number of TCI states used for deactivation is based on at least one of the following: per candidate cell or across all candidate cells.

[0015] In one aspect of the method, when the UE has preprocessed the candidate cell configuration for the cell, the departure report considers: deactivation based on TCI state, remaining active for the cell without TCI state; and / or the UE discarding the preprocessed and stored candidate cell configuration.

[0016] In one aspect of the method, the method further includes the UE sending an LTM measurement report to the serving cell, the LTM measurement report including departure report information for at least one RS.

[0017] In one aspect of this method, the UE is configured by the serving cell to activate at least one TCI state based on the departure report information.

[0018] In one aspect of this method, the TCI state is an LTM candidate TCI state or a TCI state associated with an LTM candidate cell.

[0019] According to an aspect of this disclosure, a user equipment (UE) device includes at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the UE device to perform at least any of the aforementioned methods.

[0020] According to an aspect of this disclosure, a processor-readable medium storage instruction, when executed by at least one processor of a UE device, causes the UE device to perform at least any of the aforementioned methods.

[0021] According to an aspect of this disclosure, a method includes receiving an LTM measurement report from a user equipment (UE) by a serving cell, the LTM measurement report including out-of-field reporting information for at least one reference signal (RS); determining by the serving cell that a candidate TCI state associated with at least one RS is deactivated by the UE; and determining that the deactivated TCI state is not considered as an active TCI state for cell handover or early UL synchronization.

[0022] In one aspect of this method, TCI state deactivation can be configured by the serving cell based on at least one of the following: per candidate cell; across all cells; or per candidate TCI state.

[0023] In one aspect of this method, the maximum number of TCI states used for deactivation based on the departure report can be configured by the serving cell.

[0024] In one aspect of the method, the method further includes receiving from the UE by the serving cell an indication of the UE's capability to deactivate the candidate TCI state based on an off-site report message.

[0025] In one aspect of the method, the method further includes receiving from the UE by the serving cell an indication of the capability to support TCI deactivation based on off-site reporting information for candidate TCI states.

[0026] According to an aspect 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.

[0027] According to an aspect of this disclosure, a processor-readable medium storage instruction, when executed by at least one processor of a network device, causes the network device to perform at least any of the aforementioned methods.

[0028] The subject matter of the independent claims is provided in several respects. Other aspects are defined in the dependent claims. Attached Figure Description

[0029] Some exemplary embodiments will now be described with reference to the accompanying drawings.

[0030] Figure 1 This is a diagram of an example embodiment of wireless networking between a network system and a user equipment (UE) according to one aspect of this disclosure;

[0031] Figure 2 This is a diagram of an example component of a network system according to one aspect of this disclosure;

[0032] Figure 3 This is a diagram illustrating an example embodiment of signals and operations in a UE, serving cell, and target cell according to one aspect of this disclosure; and

[0033] Figure 4 This is a diagram of an example block diagram of a wireless station or node (e.g., a network node (such as a gNodeB (gNB)), a user node or UE, a relay node, or other node) according to one aspect of this disclosure. Detailed Implementation

[0034] In the following description, certain specific details are set forth to provide a complete understanding of the disclosed aspects. However, those skilled in the art will recognize that these aspects can be practiced without one or more of these specific details or by utilizing methods, components, materials, etc. In other instances, well-known structures associated with transmitters, receivers, or transceivers are not shown or described in detail to avoid unnecessarily obscuring the description of the aspects.

[0035] Throughout this specification, the reference to "an aspect" or "aspect" indicates that a particular feature, structure, or characteristic described in connection with that aspect is included in at least one aspect. Therefore, the appearance of the phrase "in an aspect" or "in an aspect" throughout this specification does not necessarily refer to the same aspect. Furthermore, a particular feature, structure, or characteristic may be combined in any suitable manner in one or more aspects.

[0036] 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 (GSMTM, 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), Advanced 5G, 6G (and above), and other wireless networking systems such as 802.11ax (Wi-Fi 6). 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).

[0037] 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 "sent to," "received from," and "cooperate" (and variations thereof) include communication that may or may not involve communication through one or more intermediate devices or nodes. The term "acquire" (and variations thereof) includes acquiring in a first instance or reacquiring after a first instance. The term "connection" may refer to a physical connection or a logical connection.

[0038] This disclosure uses 5G NR as an example of a wireless network, and may use smartphones and / or extended reality headsets as examples of user equipment (UE). It should be anticipated and understood that such examples are merely illustrative, and this disclosure applies to other wireless networks and user equipment.

[0039] Figure 1This 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(s), and / or any of the other components(s) of network system 100. Examples of network apparatus include, but are not limited to, apparatuses implementing aspects of 5G NR. This disclosure describes embodiments relating to 5G NR as well as embodiments relating to aspects defined by the 3rd Generation Partnership Project (3GPP). However, embodiments involving other wireless networking technologies are contemplated to be included within the scope of this disclosure.

[0040] The following description provides further details of examples of network nodes. In a 5G NR network, a gNodeB (also referred to as a gNB) may include, for example, a node that provides new radio NR user plane and control plane protocol termination to the UE, and the node is connected to the 5G core (5GC) via an NG interface, for example, according to Section 3.2 of 3GPP TS 38.300 V16.6.0 (2021-06), which is incorporated herein by reference.

[0041] gNB supports various protocol layers, such as Layer 1 (L1) - the physical layer, Layer 2 (L2), and Layer 3 (L3).

[0042] 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) flows to 5GC; The control channels include the Broadcast Control Channel (BCCH) and the Physical Control Channel (PCCH).

[0043] Layer 3 (L3) includes, for example, Radio Resource Control (RRC), as per Section 6 of 3GPP TS 38.300 V16.6.0 (2021-06), which is incorporated herein by reference.

[0044] The gNB Central Unit (gNB-CU) includes, for example, logical nodes that host, for example, the gNB's Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), and Packet Data Convergence Protocol (PDCP), or the en-gNB's RRC and PDCP protocols, which control the operation of one or more gNB Distributed Units (gNB-DUs). The gNB-CU terminates at 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.

[0045] A gNB Distributed Unit (gNB-DU) includes, for example, a logical node that hosts the Radio Link Control (RLC), Media Access Control (MAC), and Physical (PHY) layers of, for example, a gNB or en-gNB, 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. A gNB-DU terminates at an F1 interface connected to the gNB-CU. The gNB-DU may also be referred to herein as a DU or Distributed Unit.

[0046] As used herein, the term "network node" may refer to any one or any combination of gNB, gNB-CU, or gNB-DU. RAN (Radio Access Network) nodes or network nodes (e.g., gNB, gNB-CU, or gNB-DU, or portions thereof) may be implemented using means, for example, having at least one processor and / or at least one memory having processor-readable instructions ("program") configured to support and / or provide and / or process functions and / or features associated with the CU and / or DU, and / or at least one protocol (sub) layer of the RAN (Radio Access Network), such as layer 2 and / or layer 3. Different functional divisions between central and distributed units are possible. The following will combine... Figure 4 Examples describing such devices and components.

[0047] The gNB-CU and gNB-DU portions can, for example, be co-located or physically separated. The gNB-DU can even be further divided into, for example, two portions, such as one portion including processing equipment and another portion 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 Headend / Remote Radio Unit / Radio Equipment / Radio Unit (RRH / RRU / RE / RU), or a portion thereof. In the various example embodiments of this disclosure, 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.

[0048] A gNB-CU can support one or more gNB-DUs. A gNB-DU can support one or more cells, and therefore can support serving cells for user equipment (UE) or candidate cells for other processes such as handover, dual connectivity, and / or carrier aggregation.

[0049] 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 machine-to-machine (M2M) devices, or 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 cause the device to perform at least certain operations, such as an RRC connection to the RAN. Examples of UE components will be combined. Figure 4 As described. In an embodiment, UE 150 may be configured to generate a message (e.g., including a cell ID) that is transmitted via radio to the RAN (e.g., to reach and communicate with the serving cell). In an embodiment, UE 150 may generate, send, 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.

[0050] By continuing to refer Figure 1In the example of a 5G NR 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 the 5G NR network or any other means configured to control radio communications and manage radio resources within the cell. 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 domains, subcarriers, beams, etc. In embodiments, network node 120 may be referred to as a base station.

[0051] Figure 1 Examples are provided, and they are merely illustrative examples of network system 100 and UE 150. Those skilled in the art will understand that network system 100 includes components not included in... Figure 1 The components shown in the diagram will be understood, and other user devices can communicate with network system 100.

[0052] Figure 2 yes Figure 1 A block diagram of example components of network system 100. A 5G NR network can be described as an example of network system 100, and its intended aspects described below should also apply to other types of network systems. The network system can be configured according to... Figure 1 The signals and connections shown herein operate to enable UE 150 to communicate with network system 100 via radio access network 225. Additionally, as shown and described herein, the network system can be divided into user plane components and functions and control plane components and functions. Unless otherwise indicated, the terms “component,” “function,” and “service” may be used interchangeably herein, and may refer to instructions executed by one or more processors and implemented through those instructions.

[0053] Example functionality of the components is described below. This example functionality is illustrative only, and it should be understood that additional operations and functions may be performed by the components described herein. Furthermore, connections between components can be virtual connections over service interfaces, allowing any component to communicate with any other component. In this way, any component can act as a service "producer" to provide services for network functions to any other component acting as a service "consumer."

[0054] For example, core network 210 is described in the control plane of the network system. Core network 210 may include Authentication Server Function (AUSF) 211, Access and Mobility Function (AMF) 212, and Session Management Function (SMF) 213. Core network 210 may also include Network Slice Selection Function (NSSF) 214, Network Open Function (NEF) 215, Network Repository Function (NRF) 216, and Unified Data Management Function (UDM) 217, which may include Unified Data Repository (UDR) 224.

[0055] Additional components and functions of the core network 210 may include application functions 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.

[0056] 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 on the RAN 225. The DN226 identifies services from, for example, service providers, Internet access, and third-party services.

[0057] AMF 212 handles connectivity and mobility tasks. AUSF 211 receives authentication requests from AMF 212 and interacts with UDM 217 to authenticate and verify the network response for successful authentication. SMF 213 manages Packet Data Unit (PDU) sessions and session contexts via UPF 226.

[0058] NSSF 214 can select a Network Slice Instance (NSI) and determine the allowed Network Slice Selection Assistance Information (NSSAI). This selection and determination are used to set up AMF 212 to provide services to UE 150. NEF 215 ensures access to network services for third parties to create private network services. NRF 216 serves as a repository for storing network functions to allow functions to register and discover each other.

[0059] UDM 217 generates authentication vectors used by AUSF 211 and ADM 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 with network slicing and mobility management, as well as providing Quality of Service (QoS) and accounting functions.

[0060] NWDAF 220 collects data (e.g., from UE 150 and network systems) to perform network analytics and provide insights for functions that leverage analytics in service provision. ADRF 221 allows consumers to store, retrieve, and delete data and analytics. MDAF 222 provides additional data analytics services for network functions. OAM 223 provides provisioning and management processing functions to manage elements in or connected to the network (e.g., UE 150, network nodes, etc.).

[0061] Figure 2 These are merely examples of components of a network system, and variations are expected within the scope of this disclosure. In embodiments, the network system may include components not included in... Figure 2 Other components shown. In embodiments, the network system may not include... Figure 2 Each component is shown in the diagram. In an embodiment, it can be connected with... Figure 2 The different connections shown implement the components and connections. Such and other embodiments are contemplated within the scope of this disclosure.

[0062] Figure 3 This is a diagram of an example embodiment of signals and operations in a UE, serving cell, and target cell according to one aspect of this disclosure. In various embodiments, Figure 3 This illustration depicts a user equipment (UE) deactivating at least one candidate transmission configuration indicator (TCI) state associated with at least one reference signal (RS) according to one aspect of this disclosure. In various embodiments, Figure 3 The components described in the text can correspond to those above. Figure 1 and Figure 2 Similar components as described herein. It should be understood that the described signals may have associated operations, and the described operations may have associated signals.

[0063] This disclosure enables a user equipment (UE) to deactivate at least one candidate transmission configuration indicator (TCI) state associated with at least one reference signal (RS).

[0064] The general procedure for LTM is described below. The UE sends a measurement report message to the gNB, which provides access to the source cell. The gNB decides to configure LTM and initiate LTM preparation. The gNB sends an RRC reconfiguration message to the UE, including the LTM candidate configuration. The UE then stores the LTM candidate configuration and sends an RRC reconfiguration complete message to the gNB.

[0065] Before receiving a cell handover command, the UE performs DL synchronization with (multiple) candidate cells (via early TCI activation). The activation and deactivation of the TCI state used for early DL synchronization are managed by the network via MAC CE signaling. Activation and deactivation are explicit; that is, the UE maintains the activated TCI state until it is deactivated by a deactivation command. The network can signal the deactivation command separately; however, this may result in unnecessary signaling.

[0066] Early DL synchronization of DL reference signals (such as SSB or Tracking Reference Signal (TRS)) with respect to candidate cells is facilitated by activating the Early Transmission Configuration Indicator (TCI) state associated with the DL reference signal. In NR, the TCI state represents a specific set of transmission parameters, including spatial relationships, used by the UE to receive DL transmissions or transmit UL transmissions. The TCI state typically includes quasi-co-location (QCL) information such as Doppler spread, Doppler shift, average delay, delay spread, spatial Rx parameters, and / or (multiple) reference signal information. The UE derives the QCL parameters from measurements of the specified reference signal, which are subsequently applied to all transmissions and receptions associated with that TCI state.

[0067] Early candidate TCI activation is supported to trigger fine-grained time / frequency synchronization between the UE and a given joint and / or uplink LTM TCI state(s) of a candidate cell. This is used by the network as pre-DL synchronization, designed to prepare the UE for LTM cell handover and enable shorter interruptions during handover, which in this case does not necessarily require time tracking for the target LTM TCI state(s). The source cell can trigger activation of a specific LTM TCI state(s) for a candidate target cell based on measurements reported by the UE. Because the measurement reports from the UE include reference signal information, the source cell can determine the corresponding LTM TCI state(s). When the LTM TCI state(s) is selected, the source cell sends a candidate TCI state activation command, which includes the LTM TCI state(s) and candidate cell information.

[0068] Upon receiving the TCI state activation MAC CE, the UE is expected to initiate a tracking reference signal and acquire and maintain the associated QCL parameters. The network assumes a specific time before it believes the UE has acquired all the necessary parameters and is ready to use the LTM TCI state for transmission and / or reception (i.e., the TCI state activation delay). This process can be applied to multiple LTM TCI states for various candidate target cells.

[0069] When a candidate target cell is selected for cell handover, the source cell can select one of the active LTM TCI states (or two TCI states in the case of separate DL TCI and UL TCI states) and include it in the cell handover command MAC CE.

[0070] If the indicated LTM TCI state (or if the TCI state is separate for DL ​​and UL) has been activated, and the time between the TCI state activation MAC CE and the cell handover command MAC CE exceeds the TCI state activation delay, the UE does not need to perform additional DL synchronization, thus reducing cell handover interruption time. Conversely, if the indicated TCI state (or if the TCI state is separate for DL ​​and UL) has not been activated, or if the activation interval to the cell handover command is shorter than the TCI state activation delay, the cell handover interruption time will include the time required for DL ​​synchronization.

[0071] Both SSB-based TCI states and Tracking Reference Signal (TRS)-based TCI states are supported. TRS-based TCI states provide finer-grained time and frequency synchronization and enable the UE to acquire all QCL parameters, such as Doppler spread, Doppler shift, average delay, delay spread, and spatial Rx information. These are typically used for high-throughput DL and UL transmissions. Conversely, SSB-based TCI states provide limited information, primarily average delay, Doppler shift, and spatial Rx information, and are suitable for low-throughput DL and UL transmissions. Because TRS can be quasi-co-located with SSB, the source cell can select the TRS-based TCI state based on SSB measurement reports.

[0072] refer to Figure 3 At operation 301, the UE can send a message to the serving cell based on the departure report indicating the UE's capabilities to support TCI deactivation for candidate TCI states. This can be indicated along with the maximum / minimum number of candidate TCI states per candidate cell and the minimum number of candidate TCI states across all candidate cells.

[0073] At operation 302, the serving cell can send LTM configuration (i.e., measurement RS configuration) to the UE and participate in reporting configuration. Reporting configuration may include event-triggered reporting configuration and / or out-of-area reporting configuration. In this aspect, event-triggered L1 measurements may include selecting candidate beams and / or cells to trigger early synchronization and / or selecting target beams and / or cells, and triggering an LTM cell handover process. For event-triggered L1 measurements, the beam-level measurement results used for event assessment are the baseline and FFS for cell-level measurements.

[0074] In this regard, if the UE has already preprocessed the candidate cell configuration for the cell (e.g., performed early ASN.1 decoding and validity checks), the departure report considers that if the TCI state proposed in the above embodiments is deactivated and no TCI state remains active for the cell, the UE may also discard the preprocessed and stored candidate cell configuration.

[0075] In this aspect, upon receiving an outage report, reporting at least one RS, or determining that an outage condition report is for a candidate TCI state that has previously been indicated for at least one RS to which it is activated, it is then determined whether the candidate TCI state associated with the outage report for the at least one reported or indicated RS to which it is reported is deactivated by the UE. A deactivated TCI state may not be considered an active TCI state for cell handover or early UL synchronization or early DL synchronization (i.e., the UE may not track or be required to track the RS associated with the TCI state).

[0076] At operation 303, the system performs measurements on at least one of the serving cell and one or more candidate cells. The measurements and reports are based on an LTM candidate cell configuration provided by the network for one or more LTM candidate cells. An LTM candidate cell can be a neighboring cell or the UE's current serving cell (e.g., one of the current secondary cells).

[0077] At operation 304, the UE determines that at least one reporting event for at least one RS of the candidate cell has been triggered.

[0078] At operation 305, the UE sends an LTM measurement report (MAC CE) to the serving cell.

[0079] At operation 306, the UE receives from the serving cell a candidate TCI state activation command for at least one TCI state corresponding to at least one RS.

[0080] At operation 307, the UE determines that at least one RS meets the departure reporting criteria or does not meet the event reporting criteria. The UE can determine whether to trigger a departure report for the status indication of the RS based on at least one RS meeting the departure reporting criteria.

[0081] At operation 308, the UE sends an LTM measurement report (MAC CE) to the serving cell, which includes departure reporting information for at least one RS.

[0082] In this aspect, when a UE reports a departure for a candidate cell's RS, the TCI state associated with that RS can remain known for X ms (e.g., 1280 ms) after the report.

[0083] At operation 309, the UE deactivates the active candidate TCI state associated with the reported RS. Deactivation based on the departure report can be a configurable operation (e.g., a configuration parameter in the departure report configuration) or part of another configuration related to an event-triggered report. In one example embodiment, the number of TCI states to be deactivated based on the departure report (e.g., N) can be configured by the network, where the UE can deactivate RSs reported in the departure report (e.g., reporting M RSs, where M...). N) associated N number of TCI states; the N TCI states may be selected from TCI states associated with the first N RSs / last N RSs reported in the report (e.g., in a consecutive order) or from TCI states based on measurement quality (e.g., associated with the lowest measurement quality among the reported RSs); and the number of TCI states used for deactivation (e.g., N) may be per candidate cell or across all candidate cells.

[0084] In this respect, deactivating at least one TCI state may include at least one of the following: removing at least one TCI state from the list of active TCI states; keeping at least one TCI state in the list of active TCI states by the UE and not continuing to maintain tracking of the following: downlink (DL) time and / or frequency synchronization with the RS associated with at least one TCI state; or the UE not requiring the UE to continue and / or not continue to maintain tracking of the following: DL time and / or frequency synchronization with the RS associated with at least one TCI state.

[0085] At operation 310, the serving cell determines that the candidate TCI state associated with the reported RS is deactivated by the UE. The serving cell may determine that the deactivated TCI state is not considered as an active TCI state for cell handover related operations. In some embodiments, the serving cell may determine that the deactivated TCI state is not considered as an active TCI state for cell handover. In some embodiments, the serving cell may determine that the deactivated TCI state is not considered as an active TCI state for early UL synchronization.

[0086] Figure 3The operations described are merely illustrative, and variations are expected within the scope of this disclosure. In embodiments, operations may include those not described in... Figure 3 Other operations shown in the diagram. In embodiments, operations may not include... Figure 3 Each operation is shown in the diagram. In an embodiment, it can be performed in a different manner. Figure 3 The sequence of operations shown is intended to perform the operations. Such and other embodiments are contemplated within the scope of this disclosure. Those skilled in the art will understand that while various example components are described as performing various functions, other components may perform... Figure 3 The functions described in [the document].

[0087] The following describes the operation from the UE's perspective. From this perspective, the method may include: the user equipment (UE) deactivating at least one candidate Transmission Configuration Indicator (TCI) state associated with at least one reference signal (RS) based on at least one of the following determinations: the UE has reported a departure message for at least one RS corresponding to a Transmission Configuration Indicator (TCI) state; the UE has performed signaling to report a departure message based on the criterion for determining departure reporting being met for at least one RS, wherein at least one RS corresponds to at least one TCI state; the UE has triggered the transmission of a departure report message based on the departure report criterion determined for at least one RS; the departure report criterion is met for at least one RS; or the UE reports departure report information by omitting at least one RS from the departure report message.

[0088] Figure 4 This is a block diagram of a wireless station or node (e.g., UE, user equipment, AP, BS, eNB, gNB, RAN node, network node, TRP, or other node) 400 according to one aspect of this disclosure. The wireless station 400 may include, for example, one or more (e.g., such as...) Figure 4 The two RF (radio frequency) or wireless transceivers 402A and 402B shown herein include a transmitter for transmitting signals and a receiver for receiving signals. The wireless station also includes a processor or control unit / entity (controller) 404 that executes instructions or software and controls the transmission and reception of signals, and a memory 406 that stores data and / or instructions.

[0089] Processor 404 may also make decisions or determinations, generate frames, packets, or messages for transmission, decode received frames or messages for further processing, and perform other tasks or functions described herein. For example, processor 404 (which may be a baseband processor) may generate messages, packets, frames, or other signals for transmission via wireless transceiver 402 (402A or 402B). Processor 404 may control the transmission of signals or messages on a wireless network and may control the reception of signals or messages via a wireless network (e.g., after down-conversion by wireless transceiver 402). Processor 404 may be programmable and capable of executing software or other instructions stored in memory or other computer media to perform the various tasks and functions described above, such as one or more of the tasks or methods described above. Processor 404 may be (or may include) hardware, programmable logic, a programmable processor executing software or firmware, and / or any combination of these. For example, using other terms, processor 404 together with transceiver 402 may be considered a wireless transmitter / receiver system.

[0090] In addition, refer to Figure 4 The controller (or processor) 408 can execute software and instructions, and can provide overall control for station 400, and can provide specific control for... Figure 4 Control of other systems not shown, such as control of input / output devices (e.g., display, keyboard), and / or execution of software for one or more applications that may be available on the wireless station 400, such as email programs, audio / video applications, word processors, VoIP applications, or other applications or software.

[0091] In addition, a storage medium may be provided that includes stored instructions, which, when executed by a controller or processor, may cause processor 404 or other controllers or processors to perform one or more of the functions or tasks described above.

[0092] According to another example embodiment, the RF or (multiple) wireless transceivers 402A / 402B can receive signals or data and / or transmit or send signals or data. The processor 404 (and possibly the transceivers 402A / 402B) can control the RF or wireless transceivers 402A or 402B to receive, transmit, broadcast, or send signals or data.

[0093] Example embodiments are provided or described for each example method, including: an apparatus (e.g., Figure 4 (400), including components for performing any method (e.g. Figure 4 The processor 404, RF transceiver 402A and / or 402B, and / or memory 406; a non-transient computer-readable storage medium (e.g., Figure 4Memory 406), including instructions stored thereon, which are processed by at least one processor ( Figure 4 When the processor 404 executes, it is configured to cause the computing system (e.g., Figure 4 (400) executes any example method; and a device (e.g., Figure 4 (of the 400), including at least one processor (e.g., Figure 4 The processor 404), and at least one memory including computer program code (e.g., Figure 4 The at least one memory (406) and computer program code are configured together with at least one processor (404) such that the device (e.g., 400) performs at least any of the example methods.

[0094] Further embodiments of this disclosure include the following examples.

[0095] Example 1.1. A user equipment (UE) includes: A component for deactivating at least one candidate Transmission Configuration Indicator (TCI) state associated with at least one reference signal (RS) by a user equipment (UE) based on at least one of the following determinations: The UE has reported a departure message for at least one RS corresponding to the Transport Configuration Indicator (TCI) state; Based on the criteria for determining the departure report, if at least one RS is satisfied, the UE has executed signaling to report the departure message, wherein at least one RS corresponds to at least one TCI state; Based on the departure reporting standard determined for at least one RS, the UE has triggered the transmission of a departure report message; The criteria for exit reporting require that at least one RS be met; or The UE reports departure information by omitting at least one RS in the departure report message.

[0096] Example 1.2. According to the UE of Example 1.1, deactivating at least one TCI state includes at least one of the following: Remove at least one TCI status from the list of active TCI statuses; The UE maintains at least one TCI state in the list of active TCI states and does not continue to maintain tracking of the following: downlink (DL) time and / or frequency synchronization with the RS associated with at least one TCI state; or The UE does not require the UE to continue and / or not continue to maintain tracking of the following: DL time and / or frequency synchronization with an RS associated with at least one TCI state.

[0097] Example 1.3. The UE according to Example 1.1, wherein the UE sends an out-of-area report message for at least one RS for a candidate cell, and the TCI state associated with the RS for the candidate cell remains known for a predetermined time period after the report.

[0098] Example 1.4. UE according to Example 1.2, wherein deactivation of at least one TCI state is based on at least one of the following: The exit report message has been confirmed to have been generated. The exit report message has been successfully delivered. Confirm that the departure report message has been sent at least once, or The departure report has been confirmed.

[0099] Example 1.5. According to the UE of Example 1.3, the deactivation of the TCI state associated with at least one RS is associated with a timer or time period, and the departure reporting conditions are determined for the at least one RS.

[0100] Example 1.6. UE according to Example 1.5, where the timer is configured by the network, or the timer is configured for a predetermined time period, and The timer is activated based on the UE's determination of at least one of the following: The departure report message has been generated. The exit report message has been successfully delivered. The exit report message has been sent at least once. The departure report has been confirmed. When the departure reporting criteria are determined to be met for at least one RS corresponding to at least one TCI state, or The timer is started a predetermined number of time slots later than the time slot to be executed as determined above.

[0101] Example 1.7. Based on the UE of Example 1.1, it also includes: A component for determining to deactivate at least one TCI state when a predetermined number of sent reports are reached.

[0102] Example 1.8. Based on the UE of Example 1.1, it also includes: A component used to perform periodic reporting when a reporting event has been triggered for at least one RS.

[0103] Example 1.9. Based on the UE of Example 1.1, it also includes: A component used by the UE to send an indication to the serving cell regarding the capability to support TCI deactivation based on candidate TCI status and off-site reporting information.

[0104] Example 1.10. The UE according to Example 1.9, wherein the indication also includes at least one of the following: Maximum and / or minimum number of candidate TCI states for each candidate cell; or Maximum and / or minimum number of candidate TCI states across all candidate cells

[0105] Example 1.11. According to the UE of Example 1.1, the maximum number of TCI states used for deactivation based on the departure report can be configured by the network device. The UE deactivates the number of TCI states associated with the RS reported in the departure report message, and The number of TCI states used for deactivation is selected based on at least one of the following: Based on measurement quality, the correlation with the first N RS / last N RS reported in the report, or The maximum number of TCI states used for deactivation is based on at least one of the following: per candidate cell or across all candidate cells.

[0106] Example 1.12. Based on the UE in Example 1.1, where the UE has already preprocessed the candidate cell configuration for the cell, the departure report considers: Deactivation based on TCI state, maintaining activity for cells without TCI state, and / or The UE discards the preprocessed and stored candidate cell configurations.

[0107] Example 1.13. Based on the UE of Example 1.1, it also includes: A component for sending an LTM measurement report from the UE to the serving cell, the LTM measurement report including departure report information for at least one RS.

[0108] Example 1.14. The UE according to Example 1.1, wherein the UE can be configured by the serving cell to activate at least one TCI state based on the off-site report information.

[0109] Example 1.15. The UE based on Example 1.1, where the TCI state is an LTM candidate TCI state or a TCI state associated with an LTM candidate cell.

[0110] Example 1.16. A user equipment (UE) comprising: A component for receiving an LTM measurement report from a user equipment (UE) by a serving cell, the LTM measurement report including departure report information for at least one reference signal (RS); Components for determining by the serving cell that a candidate TCI state associated with at least one RS is deactivated by the UE; and The component used to determine that a deactivated TCI state is not considered an active TCI state for cell handover or early UL synchronization.

[0111] Example 1.17. Based on the UE of Example 1.16, where TCI state deactivation can be configured by the serving cell based on at least one of the following: Each candidate community; Across all communities; or Each candidate TCI state.

[0112] Example 1.18. UE based on Example 1.16, wherein the maximum number of TCI states for deactivation based on off-site reports can be configured by the serving cell.

[0113] Example 1.19. Based on the UE of Example 1.16, it also includes: A component used by the serving cell to receive an indication from the UE of the UE's capabilities for deactivating candidate TCI states based on an off-site report message.

[0114] Example 1.20. Based on the UE of Example 1.16, it also includes: A component for receiving instructions from the UE by the serving cell regarding the capability to support TCI deactivation based on candidate TCI status using off-site reporting information.

[0115] The embodiments and aspects disclosed herein are examples of this disclosure and can be implemented in various forms. For example, while 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 are not to 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 use this disclosure in diverse ways with virtually any suitable detailed structure. Throughout the description of the accompanying drawings, similar reference numerals may refer to similar or identical elements.

[0116] The phrases “in one aspect,” “in multiple aspects,” “in various aspects,” “in some aspects,” or “in other aspects” can refer to one or more aspects of the same or different aspects according to this disclosure. The phrase “multiple” can refer to two or more.

[0117] In various embodiments, the terms "first message" and "second message" as well as any subsequent messages may refer to any messages sent or received in sequence, and are not necessarily limited to any particular message.

[0118] The phrases “in one embodiment,” “in multiple embodiments,” “in various embodiments,” “in some embodiments,” or “in other embodiments” can refer to one or more embodiments 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).”

[0119] 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 derived languages: assembly language, Basic, batch files, BCPL, C, 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-, or later computer languages. Databases and other data schemas, as well as any other meta-languages, are also included. No distinction is made between interpreted, compiled, or languages ​​that use both compilation and interpretation methods. No distinction is made between compiled and source versions of a program. Therefore, a reference to a program (where a programming language can exist in more than one state, such as source, compiled, object, or linked) is a reference to any and all such states. References to a program may include the actual instructions and / or the intent of those instructions.

[0120] While aspects of this disclosure have been shown in the accompanying drawings, this disclosure should not be limited thereto, as it should have the broadest possible scope permitted by the art, and this specification should be read similarly. Therefore, the foregoing description should not be construed as limiting, but merely as an example of particular aspects. Other modifications within the scope and spirit of the appended claims will be envisioned by those skilled in the art.

Claims

1. A user equipment (UE) device, comprising: At least one processor; as well as At least one memory stores instructions that, when executed by the at least one processor, cause the UE device to perform at least the following: Based on at least one of the following determinations, deactivate at least one candidate transmission configuration indicator (TCI) state associated with at least one reference signal RS: The UE device has reported a departure message for at least one RS corresponding to the Transmission Configuration Indicator (TCI) state; Based on the criteria for determining the departure report, if at least one RS is satisfied, the UE device has executed signaling to report the departure message, wherein the at least one RS corresponds to the at least one TCI state; Based on the standard for departure reporting determined for at least one RS, the UE device has triggered the transmission of the departure report message; The criteria for the departure report are met for at least one of the RS; or The UE device reports departure report information by excluding the at least one RS from the departure report message.

2. The UE device of claim 1, wherein deactivating the at least one TCI state comprises at least one of the following: Remove the at least one TCI state from the list of active TCI states; The at least one TCI state is maintained in the list of active TCI states, and tracking of the following is no longer maintained: downlink DL time and / or frequency synchronization with the RS associated with the at least one TCI state; or The UE device is not required to continue and / or not continue to maintain tracking of the following: the DL time and / or frequency synchronization with the RS associated with the at least one TCI state.

3. The UE device of claim 1, wherein the UE device sends the departure report message for the RS for the candidate cell in the at least one RS, and the TCI state associated with the RS for the candidate cell remains known for a predetermined time period after the report.

4. The UE device of claim 2, wherein deactivating the at least one TCI state is based on at least one of the following: It has been confirmed that the departure report message has been generated. It has been confirmed that the departure report message has been successfully provided. It is determined that the departure report message has been sent at least once, or It has been confirmed that the departure report message has been acknowledged.

5. The UE device of claim 3, wherein the deactivation of the TCI state associated with the at least one RS is associated with a timer or time period, and an off-site reporting condition is determined for the at least one RS.

6. The UE device of claim 5, wherein the timer is configured by the network, or the timer is configured for a predetermined time period, and The timer is said to be activated based on the UE device, which determines that at least one of the following is started: The departure report message has been generated. The departure report message has been successfully provided. The departure report message has been sent at least once. The departure report message has been confirmed. When the departure reporting criteria are determined to be met for at least the RS corresponding to the at least one TCI state, or The timer is started a predetermined number of time slots later than the time slot to be executed as determined above.

7. The UE device according to claim 1 is further configured to perform: When a predetermined number of reports have been sent, it is determined to deactivate the at least one TCI state.

8. The UE device according to claim 1 is further configured to perform: Perform periodic reporting when the reporting event has been triggered for at least one RS.

9. The UE device according to claim 1 is further configured to perform: Send instructions to the serving cell regarding the capability to support TCI deactivation based on the off-site report information for candidate TCI states.

10. The UE device of claim 9, wherein the indication further comprises at least one of the following: Maximum and / or minimum number of candidate TCI states for each candidate cell; or The maximum and / or minimum number of candidate TCI states across all candidate cells.

11. The UE device of claim 1, wherein the maximum number of deactivated TCI states for the departure report can be configured by the network device. The UE device deactivates the number of TCI states associated with the RS reported in the departure report message, and The number of TCI states used for deactivation is selected based on at least one of the following: Based on measurement quality, the correlation with the first N RS / last N RS reported in the report, or The maximum number of TCI states used for deactivation is based on at least one of the following: per candidate cell or across all candidate cells.

12. The UE device of claim 1, wherein, when the UE device has preprocessed candidate cell configuration for the cell, the departure report considers: Deactivation based on TCI state, maintaining activity for cells without TCI state, and / or The UE device discards the preprocessed and stored candidate cell configurations.

13. The UE device according to claim 1 is further configured to perform: Send an LTM measurement report to the serving cell, the LTM measurement report including departure report information for at least one RS.

14. The UE device according to claim 1, wherein the TCI state is an LTM candidate TCI state or a TCI state associated with an LTM candidate cell.

15. A method for communication, comprising: The user equipment (UE) deactivates at least one candidate transmission configuration indicator (TCI) state associated with at least one reference signal RS based on at least one of the following determinations: The UE has reported a departure message for at least one RS corresponding to the Transmission Configuration Indicator (TCI) state; Based on the criteria for determining the departure report, if at least one RS is satisfied, the UE has executed signaling to report the departure message, wherein the at least one RS corresponds to the at least one TCI state; Based on the standard for departure reporting determined for at least one RS, the UE has triggered the transmission of a departure report message; The criteria for the departure report are met for at least one of the RS; or The UE reports departure information by excluding the at least one RS in the departure report message.

16. A network device, comprising: At least one processor; as well as At least one memory stores instructions that, when executed by the at least one processor, cause the network device to perform at least the following: Receive an LTM measurement report from the user equipment (UE), the LTM measurement report including off-field reporting information for at least one reference signal (RS); The candidate TCI state associated with the at least one RS is determined to be deactivated by the UE; as well as Deactivated TCI states are determined not to be considered as active TCI states for cell handover or early UL synchronization.

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