Methods for event triggered measurement report for l1-l2 mobility operation
The implementation of fast activation/deactivation commands and periodic LTM measurement reporting in wireless networks addresses power and latency issues in LTM operations, improving network efficiency and reducing UE power consumption.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-03
- Publication Date
- 2026-04-09
AI Technical Summary
Existing wireless communication networks face challenges in efficiently managing UE power consumption and latency in event triggered L1-L2 mobility operations, particularly in wireless communication networks, where the evaluation of multiple events for LTM measurement reporting increases power consumption.
Implementing fast activation/deactivation commands for LTM event criteria using MAC CEs to minimize power consumption and latency, along with periodic LTM measurement reporting and early TCI state activation at the UE side to reduce overhead and latency.
Reduces UE power consumption and latency by optimizing event triggered LTM measurement reporting through efficient activation/deactivation of event criteria and timely information transmission, enhancing network performance.
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Figure CN2024123210_09042026_PF_FP_ABST
Abstract
Description
METHODS FOR EVENT TRIGGERED MEASUREMENT REPORT FOR L1-L2 MOBILITY OPERATIONFIELD
[0001] This disclosure relates to wireless communication networks including techniques for measurement reporting within wireless networks.BACKGROUND
[0002] Wireless communication networks may include user equipments (UEs) , base stations, and / or other types of wireless devices capable of communicating with one another. During operation, a UE may measure signal quality of an active cell and / or neighboring cells to facilitate handover, carrier aggregation, and so on for enhanced performance.BRIEF DESCRIPTION OF THE DRAWINGS
[0003] The following detailed description refers to the accompanying drawings. Like reference numbers in different drawings may identify the same or similar features, elements, operations, etc. Additionally, the present disclosure is not limited to the following description as other implementations may be utilized, and structural or logical changes made, without departing from the scope of the present disclosure.
[0004] Fig. 1 is a schematic diagram illustrating an example of event activation / deactivation for event triggered layer 1 / layer 2 triggered mobility (LTM) measurement reporting.
[0005] Figs. 2-3 are schematic diagrams illustrating examples of medium access control (MAC) control element (CEs) for event activation / deactivation for a single cell.
[0006] Fig. 4 is a schematic diagram illustrating an example of a MAC CE for event activation / deactivation for multiple cells.
[0007] Fig. 5 is a schematic diagram illustrating example signaling between a user equipment (UE) and a base station for event activation / deactivation for event triggered LTM measurement reporting.
[0008] Fig. 6 is a schematic diagram illustrating example signaling between a UE and a base station to configure periodic transmission for event triggered LTM measurement reporting.
[0009] Fig. 7 is a schematic diagram illustrating example signaling between a UE and a base station to configure periodic transmission using type 1 configured grant (CG) for event triggered LTM measurement reporting.
[0010] Fig. 8 is a schematic diagram illustrating example signaling between a UE and a base station to configure periodic transmission using dynamic scheduling for event triggered LTM measurement reporting.
[0011] Fig. 9 is a schematic diagram illustrating example signaling between a UE and a base station to configure periodic transmission using type 2 CG for event triggered LTM measurement reporting.
[0012] Fig. 10 is a schematic diagram illustrating an example of periodic transmissions for event triggered LTM measurement reporting based on re-evaluation of event criteria.
[0013] Fig. 11 is a schematic diagram illustrating example signaling between a UE and a base station for early transmission configuration indicator (TCI) state activation based on LTM measurement reporting.
[0014] Fig. 12 is a schematic diagram illustrating an example of a UE performing early TCI state activation for LTM.
[0015] Fig. 13 is a block diagram illustrating a device that can be employed to perform event triggered LTM measurement reporting in accordance with some aspects of the present disclosure.
[0016] Fig. 14 is a block diagram illustrating baseband circuitry that can be employed to event triggered LTM measurement reporting in accordance with some aspects of the present disclosure.DETAILED DESCRIPTION
[0017] The following detailed description refers to the accompanying drawings. Like reference numbers in different drawings may identify the same or similar features, elements, operations, etc. Additionally, the present disclosure is not limited to the following description as other implementations may be utilized, and structural or logical changes made, without departing from the scope of the present disclosure.
[0018] A user equipment (UE) may report measurements to a network to facilitate mobility management functions such as handover between cells. For example, based on measurement report (s) from the UE, the network may determine when the UE is approaching the cell edge and when handover should be performed to improve performance. One type of mobility management is layer 1 / layer 2 triggered mobility (LTM) , which involves the use of lower layer (e.g., layer 1 (L1) and / or layer 2 (L2) ) measurements, reporting, and signaling for mobility management. Since the involvement of higher layers such as the radio resource control (RRC) layer is minimized, both signal overhead and latency are improved.
[0019] One possible method of performing measurement reporting is event triggered LTM measurement reporting. For example, different events related to LTM measurements can be configured to trigger transmission of an LTM measurement report. Some example events are the following:
[0020] LTM2: Beam of serving cell becomes worse than absolute threshold
[0021] LTM3: Beam of candidate cell becomes amount of offset better than beam of serving cell
[0022] LTM4: Beam of candidate cell becomes better than absolute threshold
[0023] LTM5: Beam of serving cell becomes worse than absolute threshold1 and beam of candidate cell becomes better than another absolute threshold2
[0024] Fast Event Activation / Deactivation for Reduced UE Power Consumption
[0025] Event triggered LTM measurement reporting has the benefit of reduced signal overhead, since the network does not need to transmit signaling (e.g., downlink control information (DCI) ) to the UE to trigger an LTM measurement report. However, when the UE is required to evaluate many different events such as LTM2, LTM3, LTM4, LTM5, UE power consumption is also increased. To further improve the efficiency of event triggered LTM measurement reporting, the power consumption due to the event evaluation should be minimized.
[0026] Accordingly, in some aspects, the network transmits a fast activation / deactivation command to activate and / or deactivate different LTM event criteria. For example, the fast activation / deactivation command may be included in a medium access control (MAC) control element (CE) . In some examples, the LTM event criteria is initially configured by RRC signaling. By using a MAC CE for event activation / deactivation, the active events can be quickly reconfigured with improved signal overhead and latency when compared to RRC based reconfiguration.
[0027] Fig. 1 illustrates an example of a network 100 including a UE 101, a plurality of serving cells 111, and one or more candidate cells 112. As shown, the plurality of serving cells 111 includes a first serving cell 111-1, a second serving cell 111-2, and a third serving cell 111-3. In some examples, each cell may be included in a base station, such as an Evolved NodeB (eNB) , a next generation NodeB (gNB) , or the like.
[0028] In the illustrated example, at step 1, the UE 101 receives an LTM measurement configuration, which may configure one or more event criteria for event triggered LTM measurement reporting. For example, the one or more event criteria may include the events LTM2, LTM3, LTM4, LTM5, as previously described. In some examples, the LTM measurement configuration is received from a primary cell of the serving cells. For example, the serving cells 111-1, 111-2, 111-3 (collectively referred to as serving cells 111) may be part of a master cell group (MCG) and / or a secondary cell group (SCG) as part of dual connectivity (DC) and / or carrier aggregation (CA) . The LTM measurement configuration may be transmitted, for example, via RRC signaling.
[0029] At step 2, the UE 101 receives reference signals from the serving cells 111 and the one or more candidate cells 112, which may be used to evaluate the configured event criteria. For example, the UE 101 performs measurements on the reference signals, and compares results of the measurements to various threshold values associated with the configured events. The UE 101 may utilize serving cell and / or candidate cell reference signal measurements when evaluating event criteria, for example, in events LTM2, LTM3, LTM4, LTM5 as previously described. In some examples, the measurements comprise L1 reference signal received power (RSRP) measurements. In other examples, the measurement quantity comprises a signal to interference plus noise ratio (SINR) . The reference signals may include, for example, synchronization signal blocks (SSBs) and / or channel state information reference signals (CSI-RSs) .
[0030] In some aspects, the network determines to activate one or more events. In some examples, the determination to activate the one or more events is based on a triggering of another event. In the illustrated example, the UE 101 is initially configured with only event 2 (e.g., LTM2) as activated. At a first point in time 122, event 2 is satisfied for the first serving cell 111-1. In response to event 2 being satisfied, the UE 101 may transmit an LTM measurement report to one of serving cells 111 (e.g., to the first serving cell 111-1) . Upon receiving the LTM measurement report, the network may be aware which event was satisfied for which cell. For example, the LTM measurement report may indicate the triggering event and the cell for which the event was satisfied.
[0031] At a second point in time 124, the network (e.g., serving cell 111-1) transmits an event activation command (e.g., MAC CE) to the UE 101 to activate events 3 and 4 (e.g., LTM3, LTM4) . In some aspects, the determination by the network to activate event 3 and event 4 is based on a relationship between the triggered event (e.g., LTM2) and the activated events (e.g., LTM3, LTM4) . For example, event 2 corresponds to LTM2: Beam of serving cell becomes worse than absolute threshold. When event 2 is satisfied, it may indicate that the UE 101 is approaching the cell edge and that the network may determine to initiate handover soon. Further, event 3 may correspond to LTM3: Beam of candidate cell becomes amount of offset better than beam of serving cell, and event 4 may correspond to LTM4: Beam of candidate cell becomes better than absolute threshold. Thus, events 3 and 4 provide useful information for identifying optimal candidate cell (s) for handover. Since event 2 can be considered as a precursor to handover, events 3 and 4 can initially be deactivated to save power at the UE 101. Then, when the network detects that event 2 is satisfied (e.g., UE 101 is near cell edge) the network can transmit an event activation command (e.g., MAC CE) to activate events 3 and 4 and obtain information to assist with handover. In the illustrated example, events 3 and 4 are subsequently satisfied after the activation command is received at the second point in time 124.
[0032] Although a specific relationship between events is provided in the example of Fig. 1 for ease of explanation, it will be appreciated that alternative examples may include different relationships between events for event activation / deactivation. In alternative examples, however, no specific relationship between events is configured, and the network performs event activation / deactivation based on different criteria. Further, although the example of Fig. 1 illustrates a specific number of serving and candidate cells, alternative examples may have more or fewer serving and / or candidate cells.
[0033] Figs. 2-3 illustrate examples of MAC CEs 200, 300 for event activation / deactivation. In some aspects, the MAC CEs 200, 300 provide a per serving cell configuration for event activation / deactivation.
[0034] With reference to Figs. 2-3, in some aspects, the MAC CEs 200, 300 include one or more event activation fields 204. Each event activation field Ei may correspond to the event ‘i’ . For example E2 corresponds to event 2, E3 corresponds to event 3, etc. In some examples, each event activation field comprises an event activation bit, where a bit value of ‘1’ indicates to activate the event, and a bit value of ‘0’ indicates to deactivate the event. In some examples, a total number of event activation bits is equal to a total number of events configured by the LTM measurement configuration. In the context of Fig. 1, the event activation bits E3, E4 may indicate a value of ‘1’ and the event activation bits E2, E5 may indicate a value of ‘0’ , resulting in events 3 and 4 being activated, event 2 being deactivated, and event 5 remaining deactivated.
[0035] With reference to Fig. 2, in some aspects, the UE (e.g., UE 101) activates / deactivates events for a serving cell based on a serving cell identity (ID) indicated in the MAC CE 200. For example, the serving cell ID may explicitly indicate which serving cell the event activation / deactivation is for. As shown, the MAC CE 200 includes a serving cell ID field 206 (e.g., 3 bits) , which may identify which serving cell the activation / deactivation command is for. For example, in the context of Fig. 1, the event activation command may include the MAC CE 200, which may indicate a serving cell ID of the serving cell 111-1.
[0036] With reference to Fig. 3, in some aspects, the UE activates / deactivates events for the serving cell from which the MAC CE 300 was received. For example, in the context of Fig. 1, the event activation command may include the MAC 300, and may be transmitted to the UE 101 by the serving cell 111-1.
[0037] With reference again to Figs. 2-3, the MAC CEs 200, 300 may further include one or more reserved bits 202, 302 respectively. In the example of Fig. 2, the one or more reserved bits 202 include a single bit. In the example of Fig. 3, the one or more reserved bits 302 includes 4 bits (e.g., 3 additional bits) , due to the omission of the serving cell ID.
[0038] In some examples, the MAC CE 200 and / or the MAC CE 300 is identified by a new extended logical channel identity (ID) in its MAC subheader. For example, the eLCID identifies the MAC CE as an LTM event activation / deactivation MAC CE.
[0039] In some examples, the MAC CE has a fixed size. As shown, the MAC CEs 200, 300 may each have a size of 1 octets. However, in alternative examples, the MAC CEs 200, 300 have a fixed size with a greater number of octets (e.g., 2 octets) , which may include additional event fields (e.g., E6, E7, etc. ) to support activation / deactivation of more events.
[0040] Fig. 4 illustrates an example of a MAC CE 400 for event activation / deactivation. In some aspects, the MAC CE 400 provides event activation / deactivation for multiple cells (e.g., multiple serving cells) .
[0041] In some examples, the MAC CE 400 includes a set of cell identification fields 402. In the illustrated example, the set of cell identification fields 402 includes a set of bits (also referred to as cell identification bits 402) , where each bit corresponding to a single respective cell. In some examples, the number of cell identification bits 402 is equal to a maximum total number of serving cells supported by the UE. Then, based on UE capability information (e.g., provided to the network by the UE in a UE capability report) , a subset of these bits are used. For example, the maximum number of cells supported by any UE is eight. Therefore, the bits of the set of cell identification fields 402 forms one octet, where each bit is associated with a cell. If 4 serving cells are configured by RRC signal in CA, the bits C0, C1, C2, C4 are used and the other bits of the field 402 are not used (e.g., allocated as reserved bits) . For example, a bit width of the field 402 is hard-encoded in the 3rd Generation Partnership Project (3GPP) specification and a subset of bits of the field 402 are used depending on the number of serving cells configured for the UE.
[0042] In some examples, each cell identification field Ci corresponds to a single configured cell for the UE, and indicates whether or not the MAC CE 400 includes event activation / deactivation information for that cell. For example, a bit with a value of ‘1’ indicates that the MAC CE 400 includes event activation / deactivation information for the corresponding cell, and a bit with a value of ‘0’ indicates that the MAC CE 400 does not include event activation / deactivation information for the corresponding cell.
[0043] As shown, the MAC CE 400 may include one or more sets 404A, 404B, 404C of event activation fields (e.g., bits) . Further, each set of event activation bits may include a bit for each event configured by the LTM measurement configuration. In the illustrated example, the set 404A includes bits Ei, 2, Ei, 3, Ei, 4, Ei, 5 for events 2, 3, 4, 5 respectively. Similarly the set 404B includes bits Ei+1, 2, Ei+1, 3, Ei+1, 4, Ei+1, 5 (for events 2, 3, 4, 5) , the set 404C includes events Ej, 2, Ej, 3, Ej,4, Ej, 5, and so on.
[0044] In some aspects, the MAC CE 400 has a variable size. For example, based on the number of Ci bits indicated with a value of ‘1’ , a different number of sets of event activation bits can be included. When a Ci bit is indicated with a value of ‘0’ , the associated set of event activation bits may be omitted to reduce signal overhead. As an example, the MAC CE 400 may indicate C0 and C1 with a value of ‘1’ , and indicate C2-C7 with a value of ‘0’ . Accordingly, the MAC CE 400 may include the sets 404A, 404B of event activation bits, where the set 404A corresponds to the cell identified by C0 and set 404B corresponds to the cell identified C1, respectively.
[0045] In some examples, in the context of Fig. 1, C0 corresponds to the serving cell 111-1, C1 corresponds to the serving cell 111-2, and C2 corresponds to the serving cell 111-3. C3-C7 may correspond to additional serving cells (not shown in Fig. 1) . The MAC CE 400 may indicate C0 (e.g., corresponding to serving cell 111-1) with a value of ‘1’ , indicate Ei, 3, Ei, 4 with a value of ‘1’, and indicate Ei, 2 with values of ‘0’ . As a result, events 3 and 4 are activated for the serving cell 111-1, and event 2 is deactivated for the serving cell 111-1.
[0046] Fig. 5 illustrates an example of signaling between the UE 101 and a base station 511 for event activation / deactivation in event triggered LTM measurement reporting. In some examples, the base station 511 comprises one of the serving cells 111 of Fig. 1.
[0047] At act 502, the base station 511 transmits an event triggered LTM measurement reporting configuration to the UE 101 to configure one or more events for event triggered LTM measurement reporting. The one or more events may include one or more of : LTM2, LTM3, LTM4, LTM5 as previously described. In some examples, the event triggered LTM measurement reporting configuration is included in RRC signaling.
[0048] At act 504, the base station 511 activates and / or deactivates one or more events from the events configured by the event triggered LTM reporting configuration. For example, the base station 511 transmits a MAC CE (e.g., MAC CE 200, 300, or 400) to the UE 101 to activate / deactivate the events. As previously described, the MAC CE may activate / deactivate events for the cell from which the MAC CE was received (e.g., MAC CE 300) , a cell identified by a serving cell ID within the MAC CE (e.g., MAC CE 200) , or multiple cells indicated in the MAC CE (e.g., MAC CE 400) .
[0049] At act 506, the base station 511 transmits reference signals to the UE 101. Although not explicitly shown in Fig. 5, the UE 101 may also receive reference signals from other base stations (e.g., similar to Fig. 1) , which may be used for LTM measurements and evaluating the configured event criteria. In some examples, the reference signals include SSB and / or CSI-RS.
[0050] At act 508, the UE 101 determines whether event criteria is satisfied for the activated events. For example, the UE 101 measures the reference signals from act 506, and evaluates whether the measurement results satisfy the activated event criteria. In the example of Fig. 5, the UE 101 determines that the event criteria is satisfied.
[0051] At act 510, the UE 101 transmits an LTM measurement report to the base station 511 in response to the determination that the event criteria was satisfied. The UE 101 may transmit the LTM measurement report further based on the reference signal / measurement that satisfied the event criteria. For example, the LTM measurement report includes or is generated based on an RSRP value of the measurement that triggered the event.
[0052] In some examples, the base station 511 transmits the event activation / deactivation command at act 504 based on (e.g., in response to) a previously satisfied event. For example, between acts 502 and 504, the UE 101 measures reference signals and evaluates the other event criteria (e.g., event 2 in the context of Fig. 1) , and the activation / deactivation command actives a set of events (e.g., events 3 and 4 in the context of Fig. 1) based on the triggering of the other event.
[0053] Periodic LTM Measurement Reporting Upon Event Trigger
[0054] In some examples, information provided by event triggered LTM measurement reporting is used for selecting a candidate beam or cell to trigger early synchronization or an LTM cell switch procedure. To improve the reliability of such operation, the UE should provide timely information to the network, for example, so the network can more accurately assess whether LTM cell switch procedure should be initiated or not. Furthermore, multiple LTM measurement reports may be utilized at the network side, for example, by performing filtering operations on the multiple measurement reports, to determine whether to initiate the LTM cell switch procedure. The following description relates to configuring periodic LTM measurement report transmission in response to an event trigger.
[0055] Fig. 6 illustrates an example of signaling between the UE 101 and the base station 511 for configuring periodic LTM measurement report transmission for event triggered LTM measurement reporting. In some aspects, the base station 511 provides a configuration of a periodicity and / or a number of transmissions to the UE 101. The UE 101 transmits a “burst” of periodic LTM measurement reports based on the configured periodicity and / or number of transmissions.
[0056] At act 602, the base station 511 transmits an event triggered LTM measurement reporting configuration to the UE 101, for example, similar to act 502.
[0057] At act 604, the base station 511 transmits a configuration of a periodicity and / or a number of transmissions to the UE 101 for event triggered LTM measurement reporting. In some examples, the configuration transmitted via RRC signaling. For example, the periodicity and / or number of transmissions may be included in an LTM event configuration. In some examples, the LTM event configuration is included within the LTM measurement reporting configuration. In other examples, the LTM event configuration is separate from the LTM measurement reporting configuration, and may be carried by different signaling.
[0058] At act 606, the base station 511 transmits reference signals to the UE 101, for example, similar to act 506.
[0059] At act 608, the UE 101 determines that event criteria is satisfied, for example, similar to act 508.
[0060] At act 610, the UE 101 transmits LTM measurement reports to the base station 511 based on the configured periodicity and / or number of transmissions. For example, the UE 101 transmits a plurality of LTM measurement reports according to the configured periodicity. If configured, the UE 101 transmits a total number of LTM measurement reports according to the configured number of transmissions.
[0061] The UE 101 may continue receiving reference signals (e.g., as in act 606) from the base station 511 and / or other base stations, and measure the reference signals to generate subsequent LTM measurement reports of the periodic LTM measurement reports. By measuring reference signals over a period of time and reporting the results in the periodic LTM measurement reporting, the base station 511 may obtain more comprehensive knowledge of the channel status. The LTM measurement reports may be used, for example, by the base station 511 to perform filtering operations and determine whether to initiate an LTM cell switch procedure. In some examples, the LTM measurement reports comprise L1 measurement reports (e.g., reporting L1-RSRP) .
[0062] In some aspects, the UE 101 performs the periodic transmission for event triggered LTM reporting based on an uplink (UL) configured grant (CG) , such as a type 1 CG or a type 2 CG. In other aspects, the UE 101 performs the periodic transmission based on a combination of a scheduling request / dynamic grant, and RRC signaling. Further details will now be described with reference to Figs. 7-9.
[0063] Fig. 7 illustrates an example variation of the signaling diagram of Fig. 6. In some aspects, a type 1 CG configuration configures the periodicity and the number of transmissions, and the type 1 CG is used for the periodic LTM measurement reporting.
[0064] Similar to Fig. 6, Fig. 7 contains acts 602, 606, 608, which may be acts 602, 606, 608 as previously described.
[0065] Fig. 7 differs from Fig. 6 in that the base station 511 transmits a type 1 CG configuration to the UE 101 at act 704. In some examples, the type 1 CG configuration configures the periodicity and the number of transmissions for the periodic LTM measurement reporting. For example, the periodicity is equal to the periodicity of the type 1 CG resources, and the number of transmissions is configured separately as a field within the type 1 CG configuration (e.g., field within a ConfiguredGrantConfig information element (IE) ) . Alternatively, the number of transmissions may be configured as part of LTM configuration, such as the LTM measurement reporting configuration of act 604. The type 1 CG configuration may be included, for example, in RRC signaling.
[0066] At act 710, the UE 101 transmits periodic LTM measurement reports to the base station 511 based on the type 1 CG configuration, for example, using the type 1 CG resources. In some examples, the type 1 CG configuration includes an indication that the type 1 CG is specifically allocated for periodic LTM measurement reporting. For example, the UE 101 does not perform other UL transmissions using the type 1 CG. Alternatively, a Type-1 CG-PUSCH configured by type 1 CG configuration can be used to transmit other UL signals, e.g., uplink shared channel (UL-SCH) or other uplink control information (UCI) types. In other examples, the other UL signals e.g., UL-SCH or UCI types, are not allowed to be transmitted on Type-1 CG-PUSCH when the LTM measurement report is not transmitted on the Type-1 CG-PUSCH resource; they can be transmitted on these Type-1 CG-PUSCH when the LTM measurement report is transmitted on the Type-1 CG-PUSCH resource. For example, the UE 101 transmits a notification to the base station 511 on a physical uplink control channel (PUCCH) resource when a corresponding Type-1 CG PUSCH resource is used. Since the network is aware, from the notification, that the Type-1 CG PUSCH resource will be used by the UE 101, the Type-1 CG PUSCH resource can additionally be used to carry other UL signals (e.g., UL-SCH and / or UCI) without performing blind detection at the network side.
[0067] Fig. 8 illustrates an example variation of the signaling diagram of Fig. 6. In some aspects, RRC signaling (e.g., LTM configuration) indicates the periodicity and the number of transmissions. A combination of a scheduling request and a dynamic grant may be used for the periodic LTM measurement report transmission.
[0068] Similar to Fig. 6, Fig. 8 contains acts 602, 606, 608, which may be acts 602, 606, 608 as previously described. As shown, Fig. 8 differs from Fig. 6 in that it contains acts 804, 810, 812, and 814.
[0069] At act 804, the base station 511 configures the periodicity and the number of transmissions for the periodic LTM measurement reporting. For example, the base station 511 transmits RRC signaling to configure periodicity and the number of transmissions. In some examples, the RRC signaling includes an LTM configuration, which may be the same LTM configuration or a different LTM configuration than the LTM measurement report configuration of act 602.
[0070] At act 810, the UE 101 transmits a scheduling request to the base station 511 to request resources for the periodic LTM measurement report transmission. In some examples, the UE 101 transmits the scheduling request on a PUCCH.
[0071] At act 812, the base station 511 transmits a dynamic grant to the UE 101, in response to the scheduling request. The dynamic grant indicates resources (e.g., time and / or frequency resources) to be used by the UE 101 for the periodic LTM measurement report transmission. In some examples, the base station 511 generates the dynamic grant based on the configured periodicity and / or number of transmissions. For example, the dynamic grant may allocate multiple transmission occasions for the UE 101, where the transmission occasions are separated according to the configured periodicity, and where a total number of allocated transmission occasions is equal to the configured number of transmissions from act 804. The dynamic grant may be included in DCI within a physical downlink control channel (PDCCH) transmission.
[0072] At act 814, the UE 101 transmits the LTM measurement reports based on the configured periodicity, the configured number of transmissions, and the dynamic grant.
[0073] Fig. 9 illustrates an example variation of the signaling diagram of Fig. 6. In some aspects, a type 2 CG configuration configures the periodicity, and the type 2 CG is used for the periodic LTM measurement reporting. Further, the number of transmissions may be determined based on activation / deactivation DCI for the type 2 CG.
[0074] Similar to Fig. 6, Fig. 9 contains acts 602, 606, 608, which may be acts 602, 606, 608 as previously described. As shown, Fig. 9 differs from Fig. 6 in that it contains acts 902, 904, 906, 908, and 910.
[0075] At act 902, the base station 511 transmits a type 2 CG configuration to the UE 101. In some examples, the type 2 CG configuration configures a periodicity for the periodic LTM measurement reporting. For example, the periodicity is equal to the periodicity of the type 2 CG resources. The type 2 CG configuration may be included, for example, in RRC signaling (e.g., ConfiguredGrantConfig IE) .
[0076] At act 904, the UE 101 transmits an initial LTM measurement report to the base station 511, for example, in response to the event criteria being satisfied at act 608. For example, a reference signal measurement satisfies the event criteria at act 608, and the UE 101 generates the initial LTM measurement report based on the reference signal measurement that satisfied the event criteria.
[0077] At act 906, the base station 511 activates the type 2 CG. For example, the base station 511 transmits an activation command to the UE 101 to activate the type 2 CG. In some examples, the base station 511 transmits the activation command, in response to receiving the initial LTM measurement report at act 904. For example, the base station 511 may detect that periodic transmission is configured for event triggered LTM measurement reporting, and determine to grant resources for the periodic transmission by activating the type 2 CG resources. In some examples, the activation command includes DCI.
[0078] At act 908, the UE 101 transmits subsequent LTM measurement reports based on the type 2 CG configuration, for example, using the type 2 CG resources.
[0079] At act 910, the base station 511 deactivates the type 2 CG. For example, the base station 511 transmits a deactivation command (e.g., in DCI) to the UE 101 to deactivate the type 2 CG. In some examples, the UE 101 continues transmitting subsequent LTM measurements at act 908, until the deactivation command is received. Thus, in some aspects, an explicit configuration of a number of transmissions for the periodic transmission for event triggered LTM measurement reporting is not needed.
[0080] Fig. 10 illustrates an example of periodic transmission for event triggered LTM measurement reporting. A periodic “burst” of LTM measurement report transmissions may initially be triggered by an event criteria being satisfied. In some aspects, the UE 101 re-evaluates the event criteria for each subsequent LTM measurement report, to determine whether to stop the periodic LTM measurement report transmission.
[0081] In the example of Fig. 10, an event criteria for event triggered LTM measurement reporting is satisfied at a first point in time 1001. For example, event LTM4: Beam of candidate cell becomes better than an absolute threshold, is satisfied. The UE may measure reference signal (s) for a candidate cell, and determine that the measurement value (e.g., RSRP) exceeds an first threshold 1010. In some examples, the UE (e.g., UE 101) transmits an initial LTM measurement report, and starts a time-to-trigger (TTT) timer 1030 when the event criteria is satisfied, and begins transmitting subsequent periodic LTM measurement reports after the TTT timer 1030 expires. Alternatively, the TTT timer is not configured / used, and the first LTM measurement report in the periodic LTM measurement reports acts as the initial LTM measurement report.
[0082] In some aspects, the UE determines whether to perform subsequent LTM measurement report transmissions based on a re-evaluation of the event criteria. In one example, re-evaluating the event criteria involves comparing the LTM measurements for the subsequent LTM measurement reports to a “reverse” or “inverse” of the event criteria based on a second threshold 1020. For the event LTM4, the “reverse” criteria may include: Beam of candidate cell becomes worse than an absolute threshold. Further, the second threshold 1020 may be in an opposite direction relative to the first threshold 1010 based on the initial event criteria. For example, since the initial event criteria is: Beam of candidate becomes better than (e.g., greater than) an absolute threshold, the second threshold 1020 is set as less than the first threshold 1010. If the second threshold 1020 is passed by a subsequent measurement (e.g., measurement is less than the second threshold 1020) , then the UE may determine to cease subsequent periodic LTM measurement reporting until another event criteria is satisfied.
[0083] At a second point in time 1002, the UE performs a subsequent measurement MEAS. #0 on the candidate cell reference signals. As shown, the MEAS. #0 is greater than the first threshold 1010 and the second threshold 1020. The UE transmits a measurement report based on MEAS. #0, which may be carried by a PUSCH 1054A.
[0084] At a third point in time 1003, the UE performs a measurement MEAS. #1 on the candidate cell reference signals. As shown, the MEAS. #1 is less than the first threshold 1010, but greater than the second threshold 1020. The UE transmits a measurement report based on MEAS. #1, which may be carried by a PUSCH 1054B.
[0085] At a fourth point in time 1004, the UE performs a measurement MEAS. #2 on the candidate cell reference signals. As shown, the MEAS. #2 is less than the first threshold 1010 and less than the second threshold 1020. Accordingly, the “reverse” event criteria is satisfied, since the MEAS. #2 is less than the second threshold 1020. The UE ceases periodic LTM measurement report transmission, and does not transmit an LTM measurement report, as shown by PUSCH 1054C.
[0086] At a fifth point in time 1005 and a sixth point in time 1006, the UE performs measurements MEAS. #3 and MEAS. #4 respectively. Both MEAS. #3 and MEAS. #4 are greater than the second threshold 1020 but less than the first threshold 1010. The UE does not transmit further LTM measurement reports (e.g., in PUSCH 1054D, etc. ) , since the initial event criteria (e.g., measurement greater than first threshold 1010) has not been satisfied again.
[0087] The second, third, fourth, fifth, and sixth points in time 1002, 1003, 1004, 1005, 1006 may be separated according to a periodicity 1040. In some examples, the periodicity 1040 is equal to the configured periodicity of Figs. 6-9. For example, the periodicity 1040 is equal to the periodicity of CG resources of Figs. 7 or 9, or equal to the RRC configured periodicity of Fig. 8. Further, the PUSCHs 1054A-1054D may be allocated by the type 1 or type 2 CG, or by dynamic grant, as described with reference Figs. 7-9. In some examples, the techniques of Fig. 10 are integrated into Figs. 6-9. For example, the UE terminates periodic LTM measurement report transmission upon reaching the configured number of transmissions (or receiving deactivation DCI in Fig. 9) , or upon the reverse / inverse of the event criteria being satisfied based on the second threshold 1020, depending on which condition occurs first.
[0088] In some examples, a separate set of PUCCH occasions 1052A-1052D are configured, with a one-to-one mapping to the set of PUSCH occasions 1054A-1054D. The UE may transmit an indication in the PUCCH occasion when it intends to transmit an LTM measurement report in the associated PUSCH occasion. If the network does not receive an indication in the PUCCH occasion, the network may determine to repurpose the PUSCH resource (e.g., allocate to another UE) . In some examples, the one-to-one mapping between the PUCCH and PUSCH occasions is configured by RRC signaling.
[0089] Early TCI State Activation for Reduced Latency and Signal Overhead
[0090] In some examples, the network determines to initiate a cell switch procedure based on the LTM measurement reporting. Before transmitting a cell-switch command to the UE, the network may first transmit a TCI activation command to the UE to activate one or more TCI states. The TCI activation command increases the cell-switch latency, since the UE must first receive the TCI activation command before receiving the cell-switch command to initiate the cell-switch procedure. Given that one benefit of event triggered LTM measurement reporting is reduced latency, this cell-switch latency should ideally be minimized to further improve performance. The following description relates to autonomous early TCI state activation at the UE side based on LTM measurement reporting.
[0091] In some aspects, a UE (e.g., UE 101) activates one or more TCI states based on the recently transmitted LTM measurement report (s) (e.g., UE initiated beam reports (UIBRs) or beam reports that are triggered by network) . For example, the UE autonomously activates one or more TCI states, based on one or more TCI states associated with one or more reference signals with the highest RSRP values in a recent LTM measurement report or network-initiated beam report. Since the TCI state activation is performed autonomously at the UE side after performing the measurement, the TCI states can be ‘early-activated’ without the need for a TCI activation command. Thus, any latency and signal overhead associated with the TCI activation command can be eliminated.
[0092] Fig. 11 illustrates an example of signaling between the UE 101 and the base station 511 for early TCI state activation based on LTM measurement reporting.
[0093] At act 1102, the base station 511 transmits an event triggered LTM measurement reporting configuration, for example, similar to act 502 or act 602.
[0094] At act 1104, the base station 511 transmits reference signals to the UE 101, for example, similar to act 506 or act 606.
[0095] At act 1106, the UE 101 determines that event criteria is satisfied based on the reference signals, for example, similar to act 508 or act 608
[0096] At act 1108, the UE 101 activates a set of TCI states based on content of an LTM measurement report. For example, the UE 101 generates the LTM measurement report in response to the determination at act 1106. In some examples, the UE 101 activates a set of M number of TCI states associated with reference signals with the highest ‘M’ number of RSRP values in a recent LTM measurement report (e.g., the generated LTM measurement report) . In some examples M=min (N, K) , where ‘N’ is a maximum number of TCI states supported by the UE 101, and ‘K’ is a total number of RSRPs that fulfill the event condition (e.g., event criteria of act 1106) . In some examples, the UE 101 reports its value of ‘N’ to the base station 511 in UE capability information.
[0097] At act 1110, the UE 101 transmits the generated LTM measurement report to the base station 511 (e.g., in response to the determination at act 1106) . For example, similar to act 510 or act 610. In some examples, the LTM measurement report further includes an indication of whether the TCI state associated with the reported reference signal is already activated at the UE. For example, the LTM measurement report includes a new 1-bit IE ‘early-activation’ for each reported RS. A value of ‘1’ may indicate that the TCI state associated with the reported reference signal is already activated at the UE after the measurement report and is used for early timing offset (TO) and / or frequency offset (FO) tracking. A value of ‘0’ may indicate that the TCI state associated with the reported reference signal is not activated, and is not used for early TO / FO tracking. In some examples, the LTM measurement report does not include an explicit indication of whether the TCI state is activated, and the base station 511 implicitly knows which TCI states are activated based on a mutual understanding of rules (e.g., TCI states associated with M greatest RSRP values are activated) with the UE 101. In both the explicit and implicit scenarios, the TCI state may be immediately activated at the UE side, thereby eliminating any TCI state activation command and signal overhead / latency associated therewith.
[0098] At act 1112, the UE 101 communicates data with the base station 511 based on the activated set of TCI states. For example, based on the set of activated TCI states, the UE 101 receives data on a PDSCH or transmits data on a PUSCH.
[0099] Although Fig. 11 is described in the context of event triggered LTM measurement reporting, the early TCI state activation may also be applied for non-event triggered measurement reports. For example, in the scenario where the network transmits DCI to the UE to trigger the LTM measurement report, the UE may early activate the TCI state (s) based on the generated LTM measurement report triggered by the DCI.
[0100] Fig. 12 illustrates an example of a network 1210 in which the UE 101 performs early TCI state activation. As shown, the network 1210 includes the first serving cell 111-1, a first candidate cell 112-1, and a second candidate cell 112-2. The candidate cells 112-1, 112-2 may be included in the one or more candidate cells 112 of Fig. 1.
[0101] As shown, the first candidate cell 112-1 transmits a CSI-RS #2 and a CSI-RS #6 to the UE 101. Although not shown for simplicity, the other cells (e.g., 111-1, 112-2) may also transmit reference signals to the UE 101.
[0102] The UE 101 may be at the cell edge between the first serving cell 111-1 and the first candidate cell 112-1, such that the reference signals of the first candidate cell 112-1 satisfy the configured event criteria and trigger LTM measurement reporting.
[0103] In some examples, the reported RSRP for CSI-RS #2 is greater than the reported CSI-RS #6. Accordingly, the TCI state associated with CSI-RS #2 is prioritized for early TCI state activation. As shown by table 1220, different TCI states may be configured by different reference signals. In some examples, the table 1220 is configured via RRC signaling from the network (e.g., base station 511, serving cell 111-1, etc. ) .
[0104] Table 1230 shows example contents of an LTM measurement report from the UE 101 in the explicit indication scenario. As show, the UE 101 may include a 1-bit ‘early-activation’ IE to indicate whether the TCI state associated with the reference signal has been activated. In the illustrated example, the TCI state associated with CSI-RS #2 has been activated by indicating a value of ‘1’ and indicates that the TCI state associated with CSI-RS #6 is not early activated by indicating a value of ‘0’ . For example, the value of M=1, resulting in one TCI state being activated. Based on the association by the table 1220, the UE 101 and / or network can determine that TCI-State #2 is activated and TCI-State #3 is not activated.
[0105] Fig. 13 is a diagram illustrating example components of a device 1300 that can be employed in accordance with some aspects of the present disclosure. In some aspects, the device 1300 can include application circuitry 1302, baseband circuitry 1304, Radio Frequency (RF) circuitry 1306, front-end module (FEM) circuitry 1308, one or more antennas 1310, and power management circuitry (PMC) 1312 coupled together at least as shown. The components of the illustrated device 1300 can be included in a UE or a RAN node such as the UE 101, one or more of the serving cells 111, one or more of the candidate cells 112, or base station 511, as described throughout the present disclosure. Such devices may be configured for event triggered LTM measurement reporting, as described throughout the present disclosure. In some implementations, the device 1300 can include fewer elements (e.g., a RAN node may not utilize application circuitry 1302 and instead include a processor / controller to process IP data received from a CN, which may be a 5GC or an Evolved Packet Core (EPC) ) . In some implementations, the device 1300 can include additional elements such as, for example, memory / storage, display, camera, sensor (including one or more temperature sensors, such as a single temperature sensor, a plurality of temperature sensors at different locations in device 1300, etc. ) , or input / output (I / O) interface. In other implementations, the components described below can be included in more than one device (e.g., said circuitries can be separately included in more than one device for Cloud-RAN (C-RAN) implementations) .
[0106] The application circuitry 1302 can include one or more application processors. For example, the application circuitry 1302 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor (s) can include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc. ) . The processors can be coupled with or can include memory / storage and can be configured to execute instructions stored in the memory / storage to enable various applications or operating systems to run on the device 1300. In some implementations, processors of application circuitry 1302 can process IP data packets received from an EPC.
[0107] The baseband circuitry 1304 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The baseband circuitry 1304 can include one or more baseband processors or control logic to process baseband signals received from a receive signal path of the RF circuitry 1306 and to generate baseband signals for a transmit signal path of the RF circuitry 1306. Baseband circuitry 1304 can interface with the application circuitry 1302 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1306. For example, in some implementations, the baseband circuitry 1304 can include a 3G baseband processor 1304A, a 4G baseband processor 1304B, a 5G baseband processor 1304C, or other baseband processor (s) 1304D for other existing generations, generations in development or to be developed in the future (e.g., 2G, 6G, etc. ) .
[0108] The baseband circuitry 1304 (e.g., one or more of baseband processors 1304A-D) can handle various radio control functions that enable communication with one or more radio networks via the RF circuitry 1306. In other implementations, some or all of the functionality of baseband processors 1304A-D can be included in modules stored in the memory 1304G and executed via a Central Processing Unit (CPU) 1304E. The radio control functions can include, but are not limited to, signal modulation / demodulation, encoding / decoding, radio frequency shifting, etc. In some implementations, the baseband circuitry 1304 can include one or more audio digital signal processor (s) (DSP) 1304F.
[0109] RF circuitry 1306 can enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium. In various implementations, the RF circuitry 1306 can include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network. RF circuitry 1306 can include a receive signal path which can include circuitry to down-convert RF signals received from the FEM circuitry 1308 and provide baseband signals to the baseband circuitry 1304. RF circuitry 1306 can also include a transmit signal path which can include circuitry to up-convert baseband signals provided by the baseband circuitry 1304 and provide RF output signals to the FEM circuitry 1308 for transmission.
[0110] In some implementations, the receive signal path of the RF circuitry 1306 can include mixer circuitry 1306A, amplifier circuitry 1306B and filter circuitry 1306C. In some implementations, the transmit signal path of the RF circuitry 1306 can include filter circuitry 1306C and mixer circuitry 1306A. RF circuitry 1306 can also include synthesizer circuitry 1306D for synthesizing a frequency for use by the mixer circuitry 1306A of the receive signal path and the transmit signal path.
[0111] Fig. 14 illustrates a diagram illustrating example interfaces of baseband circuitry that can be employed in accordance with some aspects. As discussed above, the baseband circuitry 1304 of Fig. 13 can comprise processors 1304A-1304E and a memory 1304G utilized by said processors. Each of the processors 1304A-1304E can include a memory interface, 1404A-1404E, respectively, to send / receive data to / from the memory 1304G. The baseband circuitry 1304, or the one or more baseband processors or control logic of the baseband circuitry 1304, may stand alone as the UE 101, one or more of the serving cells 111, one or more of the candidate cells 112, or base station 511, and perform signaling and operation in the meaning as described throughout this disclosure.
[0112] The baseband circuitry 1304 can further include one or more interfaces to communicatively couple to other circuitries / devices, such as a memory interface 1412 (e.g., an interface to send / receive data to / from memory external to the baseband circuitry 1304) , an application circuitry interface 1414 (e.g., an interface to send / receive data to / from the application circuitry 1302 of Fig. 13) , an RF circuitry interface 1416 (e.g., an interface to send / receive data to / from RF circuitry 1306 of Fig. 13) , a wireless hardware connectivity interface 1418 (e.g., an interface to send / receive data to / from Near Field Communication (NFC) components, components (e.g., Low Energy) , components, and other communication components) , and a power management interface 1420 (e.g., an interface to send / receive power or control signals to / from the PMC 1312) .
[0113] Examples herein can include subject matter such as a method, means for performing acts or blocks of the method, at least one machine-readable medium including executable instructions that, when performed by a machine (e.g., a processor (e.g., processor , etc. ) with memory, an application-specific integrated circuit (ASIC) , a field programmable gate array (FPGA) , or the like) cause the machine to perform acts of the method or of an apparatus or system for concurrent communication using multiple communication technologies according to implementations and examples described.
[0114] Example 1 comprises a baseband processor configured to, when executing instructions stored in a memory, perform operations comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, deactivating the one or more events configured by the RRC signaling, receiving a medium access control (MAC) control element (CE) including an indication to activate a first event of the one or more deactivated events, determining whether an event criteria of the first activated event is satisfied based on measurements of one or more reference signals associated with the first activated event, and providing, to a radio frequency (RF) interface for transmission, an LTM measurement report in response to the event criteria of the first activated event being satisfied.
[0115] Example 2 comprises any variation of example 1, wherein the operations further comprise activating the first event for a first serving cell based on a serving cell identity (ID) field included in the MAC CE, wherein the serving cell ID field indicates an ID of the first serving cell.
[0116] Example 3 comprises any variation of example 1, wherein the operations further comprise activating the first event for a first serving cell in response to receiving the MAC CE from the first serving cell.
[0117] Example 4 comprises any variation of example 1, wherein the MAC CE further includes an indication to deactivate a second event, and wherein the operations further comprise: ceasing evaluation of the second event, until the second event is reactivated.
[0118] Example 5 comprises any variation of example 1, wherein the MAC CE includes one or more 1-bit fields, wherein each 1-bit field is used to activate or deactivate a respective event of the one or more configured events.
[0119] Example 6 comprises any variation of example 1, wherein the MAC CE further includes one or more cell identification fields associated with one or more respective configured cells, wherein each cell identification field indicates whether the MAC CE includes activation / deactivation information for the associated cell.
[0120] Example 7 comprises a baseband processor configured to, when executing instructions stored in a memory, perform operations comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, receiving a configuration of a periodicity for the LTM measurement reporting, determining whether an event criteria of a first event of the one or more events is satisfied based on measurements of one or more reference signals associated with the first event, and providing, to a radio frequency (RF) interface for transmission, a plurality of LTM measurement reports based on the configured periodicity, in response to the event criteria being satisfied.
[0121] Example 8 comprises any variation of example 7, wherein the configuration of the periodicity is included in RRC signaling, wherein the RRC signaling configuring the periodicity further configures a number of continuous reports for the LTM measurement reporting after the event criteria is satisfied, and wherein providing the plurality of LTM measurement reports is further based on the configured number of continuous reports.
[0122] Example 9 comprises any variation of example 8, wherein the operations further comprise: providing, to the RF interface for transmission, a scheduling request (SR) to request uplink resources for transmission of the plurality of LTM measurement reports, receiving a dynamically granted physical uplink shared channel (PUSCH) resource in response to the SR, and providing, to the RF interface for transmission, the plurality of LTM measurement reports on the dynamically granted PUSCH resource.
[0123] Example 10 comprises any variation of example 8, wherein the RRC signaling further includes a type 1 configured grant (CG) physical uplink shared channel (PUSCH) configuration, and wherein the operations further comprise providing the plurality of LTM measurement reports using continuous type-1 PUSCH resources based on the type 1 CG configuration.
[0124] Example 11 comprises any variation of example 7, wherein the configuration of the periodicity is included in a type 2 configured grant (CG) configuration, and wherein the operations further comprise: receiving an activation command to activate the type 2 CG configuration, and providing the plurality of LTM measurement reports using continuous type-1 PUSCH resources based on the type 2 CG configuration and in response to receiving the activation command.
[0125] Example 12 comprises any variation of example 11, wherein the operations further comprise: continuing to provide LTM measurement reports of the plurality of measurement reports according to configured periodicity, until a deactivation command is received for the type 2 CG configuration.
[0126] Example 13 comprises any variation of example 7, wherein the event criteria of the first event comprises a measurement quantity associated with the first event exceeding a first threshold value, and wherein the operations further comprise: receiving radio resource control (RRC) signaling that configures a second threshold value associated with the first event, where the first threshold value is larger than the second threshold value, providing a measurement report if the first event is trigged when a measurement quantity associated with the first event exceeds a first threshold value, determining that a subsequent measurement quantity associated with the first event is smaller than the second threshold value, and ceasing subsequent transmissions of the plurality of LTM measurement reports in response to the determination that the subsequent measured quantity is smaller than the second threshold value.
[0127] Example 14 comprises any variation of example 7, wherein the operations further comprise: receiving radio resource control (RRC) signaling indicating a one to one mapping between a set of physical uplink control channel (PUCCH) occasions and a set of physical uplink shared channel (PUSCH) occasions for the plurality of LTM measurement reports; and providing, to the RF interface for transmission, an indication in a PUCCH occasion including a notification of a transmission of an LTM measurement report on an associated PUSCH occasion based on the one to one mapping between the PUCCH and the PUSCH occasions.
[0128] Example 15 comprises a baseband processor configured to, when executing instructions stored in a memory, perform operations comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, determining whether an event criteria of a first event of the one or more events is satisfied based on one or more reference signals, providing, to a radio frequency (RF) interface for transmission, an LTM measurement report in response to the event criteria being satisfied, activating a set of transmission configuration indicator (TCI) states based on the LTM measurement report, in response to providing the LTM measurement report, and communicating data, via the RF interface, based on the activated set of TCI states.
[0129] Example 16 comprises any variation of example 15, wherein the set of TCI states includes ‘M’ TCI states, wherein M is a smallest value between: a number of TCI states reported in user equipment (UE) capability information, and a total number of LTM measurements that satisfy the event criteria of the first event.
[0130] Example 17 comprises any variation of example 15, wherein the operations further comprise: activating the set of TCI states based on a set of associated reference signal received power (RSRP) values being greater than other RSRP values contained within the LTM measurement report.
[0131] Example 18 comprises any variation of example 15, wherein the operations further comprise: providing a 1 bit indication in the LTM measurement report, for each TCI state of the set of TCI states, indicating that the TCI state has been activated.
[0132] Example 19 comprises any variation of example 18, wherein the operations further comprise: providing a bit indication in the LTM measurement report, for one or more additional TCI states not in the set of TCI states, indicating that the one or more additional TCI states have not been activated.
[0133] Example 20 comprises any variation of example 15, wherein the operations further comprise: performing at least one of: early timing offset (TO) tracking or early frequency offset (FO) tracking based on the set of TCI states.
[0134] Example 21 is a user equipment (UE) comprising: radio frequency (RF) circuitry, and one or more processors configured to execute instructions stored in a memory to cause the UE to: receive a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, deactivate the one or more events configured by the RRC signaling, receive a medium access control (MAC) control element (CE) including an indication to activate a first event of the one or more deactivated events, determine whether an event criteria of the first activated event is satisfied based on measurements of one or more reference signals associated with the first activated event, and transmit, via the RF circuitry, an LTM measurement report in response to the event criteria of the first activated event being satisfied.
[0135] Example 22 is a method comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, deactivating the one or more events configured by the RRC signaling, receiving a medium access control (MAC) control element (CE) including an indication to activate a first event of the one or more deactivated events, determining whether an event criteria of the first activated event is satisfied based on measurements of one or more reference signals associated with the first activated event, and transmitting an LTM measurement report in response to the event criteria of the first activated event being satisfied.
[0136] Example 23 is a user equipment (UE) comprising: radio frequency (RF) circuitry, and one or more processors configured to execute instructions stored in a memory to cause the UE to: receive a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, receive a configuration of a periodicity for the LTM measurement reporting, determine whether an event criteria of a first event of the one or more events is satisfied based on measurements of one or more reference signals associated with the first event, and transmit, via the RF circuitry, a plurality of LTM measurement reports based on the configured periodicity, in response to the event criteria being satisfied.
[0137] Example 24 is a method comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, receiving a configuration of a periodicity for the LTM measurement reporting, determining whether an event criteria of a first event of the one or more events is satisfied based on measurements of one or more reference signals associated with the first event, and transmitting a plurality of LTM measurement reports based on the configured periodicity, in response to the event criteria being satisfied.
[0138] Example 25 is a user equipment (UE) comprising: radio frequency (RF) circuitry, and one or more processors configured to execute instructions stored in a memory to cause the UE to: receive a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, determine whether an event criteria of a first event of the one or more events is satisfied based on one or more reference signals, transmit, via the RF circuitry, an LTM measurement report in response to the event criteria being satisfied, activate a set of transmission configuration indicator (TCI) states based on the LTM measurement report, in response to providing the LTM measurement report, and communicate, via the RF circuitry, data based on the activated set of TCI states.
[0139] Example 26 is a method comprising: receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting, determining whether an event criteria of a first event of the one or more events is satisfied based on one or more reference signals, transmitting an LTM measurement report in response to the event criteria being satisfied, activating a set of transmission configuration indicator (TCI) states based on the LTM measurement report, in response to providing the LTM measurement report, and communicating data based on the activated set of TCI states.
[0140] The above description of illustrated examples, implementations, aspects, etc., of the subject disclosure, including what is described in the Abstract, is not intended to be exhaustive or to limit the disclosed aspects to the precise forms disclosed. While specific examples, implementations, aspects, etc., are described herein for illustrative purposes, various modifications are possible that are considered within the scope of such examples, implementations, aspects, etc., as those skilled in the relevant art can recognize.
[0141] In this regard, while the disclosed subject matter has been described in connection with various examples, implementations, aspects, etc., and corresponding Figures, where applicable, it is to be understood that other similar aspects can be used or modifications and additions can be made to the disclosed subject matter for performing the same, similar, alternative, or substitute function of the subject matter without deviating therefrom. Therefore, the disclosed subject matter should not be limited to any single example, implementation, or aspect described herein, but rather should be construed in breadth and scope in accordance with the appended claims below.
[0142] In particular regard to the various functions performed by the above described components or structures (assemblies, devices, circuits, systems, etc. ) , the terms (including a reference to a “means” ) used to describe such components are intended to correspond, unless otherwise indicated, to any component or structure which performs the specified function of the described component (e.g., that is functionally equivalent) , even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations. In addition, while a particular feature may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application.
[0143] As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or” . That is, unless specified otherwise, or clear from context, “X employs A or B” is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B;or X employs both A and B, then “X employs A or B” is satisfied under any of the foregoing instances. In addition, the articles “a” and “an” as used in this application and the appended claims should generally be construed to mean “one or more” unless specified otherwise or clear from context to be directed to a singular form. Furthermore, to the extent that the terms “including” , “includes” , “having” , “has” , “with” , or variants thereof are used in either the detailed description and the claims, such terms are intended to be inclusive in a manner similar to the term “comprising. ” Additionally, in situations wherein one or more numbered items are discussed (e.g., a “first X” , a “second X” , etc. ) , in general the one or more numbered items can be distinct, or they can be the same, although in some situations the context may indicate that they are distinct or that they are the same.
[0144] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
Claims
1.A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting;deactivating the one or more events configured by the RRC signaling;receiving a medium access control (MAC) control element (CE) including an indication to activate a first event of the one or more deactivated events;determining whether an event criteria of the first activated event is satisfied based on measurements of one or more reference signals associated with the first activated event; andproviding, to a radio frequency (RF) interface for transmission, an LTM measurement report in response to the event criteria of the first activated event being satisfied.2.The baseband processor of claim 1, wherein the operations further comprise activating the first event for a first serving cell based on a serving cell identity (ID) field included in the MAC CE, wherein the serving cell ID field indicates an ID of the first serving cell.3.The baseband processor of claim 1, wherein the operations further comprise activating the first event for a first serving cell in response to receiving the MAC CE from the first serving cell.4.The baseband processor of claim 1, wherein the MAC CE further includes an indication to deactivate a second event, and wherein the operations further comprise: ceasing evaluation of the second event, until the second event is reactivated.5.The baseband processor of claim 1, wherein the MAC CE includes one or more 1-bit fields, wherein each 1-bit field is used to activate or deactivate a respective event of the one or more configured events.6.The baseband processor of claim 1, wherein the MAC CE further includes one or more cell identification fields associated with one or more respective configured cells, wherein each cell identification field indicates whether the MAC CE includes activation / deactivation information for the associated cell.7.A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting;receiving a configuration of a periodicity for the LTM measurement reporting;determining whether an event criteria of a first event of the one or more events is satisfied based on measurements of one or more reference signals associated with the first event; andproviding, to a radio frequency (RF) interface for transmission, a plurality of LTM measurement reports based on the configured periodicity, in response to the event criteria being satisfied.8.The baseband processor of claim 7, wherein the configuration of the periodicity is included in RRC signaling;wherein the RRC signaling configuring the periodicity further configures a number of continuous reports for the LTM measurement reporting after the event criteria is satisfied; andwherein providing the plurality of LTM measurement reports is further based on the configured number of continuous reports.9.The baseband processor of claim 8, wherein the operations further comprise:providing, to the RF interface for transmission, a scheduling request (SR) to request uplink resources for transmission of the plurality of LTM measurement reports;receiving a dynamically granted physical uplink shared channel (PUSCH) resource in response to the SR; andproviding, to the RF interface for transmission, the plurality of LTM measurement reports on the dynamically granted PUSCH resource.10.The baseband processor of claim 8, wherein the RRC signaling further includes a type 1 configured grant (CG) physical uplink shared channel (PUSCH) configuration, and wherein the operations further comprise providing the plurality of LTM measurement reports using continuous type-1 PUSCH resources based on the type 1 CG configuration.11.The baseband processor of claim 7, wherein the configuration of the periodicity is included in a type 2 configured grant (CG) configuration, and wherein the operations further comprise:receiving an activation command to activate the type 2 CG configuration; andproviding the plurality of LTM measurement reports using continuous type-1 PUSCH resources based on the type 2 CG configuration and in response to receiving the activation command.12.The baseband processor of claim 11, wherein the operations further comprise:continuing to provide LTM measurement reports of the plurality of measurement reports according to configured periodicity, until a deactivation command is received for the type 2 CG configuration.13.The baseband processor of claim 7, wherein the event criteria of the first event comprises a measurement quantity associated with the first event exceeding a first threshold value, and wherein the operations further comprise:receiving radio resource control (RRC) signaling that configures a second threshold value associated with the first event, where the first threshold value is larger than the second threshold value;providing a measurement report if the first event is trigged when a measurement quantity associated with the first event exceeds a first threshold value;determining that a subsequent measurement quantity associated with the first event is smaller than the second threshold value; andceasing subsequent transmissions of the plurality of LTM measurement reports in response to the determination that the subsequent measured quantity is smaller than the second threshold value.14.The baseband processor of claim 7, wherein the operations further comprise:receiving radio resource control (RRC) signaling indicating a one to one mapping between a set of physical uplink control channel (PUCCH) occasions and a set of physical uplink shared channel (PUSCH) occasions for the plurality of LTM measurement reports; andproviding, to the RF interface for transmission, an indication in a PUCCH occasion including a notification of a transmission of an LTM measurement report on an associated PUSCH occasion based on the one to one mapping between the PUCCH and the PUSCH occasions.15.A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:receiving a layer 1 / layer 2 triggered mobility (LTM) measurement reporting configuration via radio resource control (RRC) signaling to configure one or more events for event triggered LTM measurement reporting;determining whether an event criteria of a first event of the one or more events is satisfied based on one or more reference signals;providing, to a radio frequency (RF) interface for transmission, an LTM measurement report in response to the event criteria being satisfied;activating a set of transmission configuration indicator (TCI) states based on the LTM measurement report, in response to providing the LTM measurement report; andcommunicating data, via the RF interface, based on the activated set of TCI states.16.The baseband processor of claim 15, wherein the set of TCI states includes ‘M’ TCI states, wherein M is a smallest value between: a number of TCI states reported in user equipment (UE) capability information, and a total number of LTM measurements that satisfy the event criteria of the first event.17.The baseband processor of claim 15, wherein the operations further comprise:activating the set of TCI states based on a set of associated reference signal received power (RSRP) values being greater than other RSRP values contained within the LTM measurement report.18.The baseband processor of claim 15, wherein the operations further comprise:providing a 1 bit indication in the LTM measurement report, for each TCI state of the set of TCI states, indicating that the TCI state has been activated.19.The baseband processor of claim 18, wherein the operations further comprise:providing a bit indication in the LTM measurement report, for one or more additional TCI states not in the set of TCI states, indicating that the one or more additional TCI states have not been activated.20.The baseband processor of claim 15, wherein the operations further comprise:performing at least one of: early timing offset (TO) tracking or early frequency offset (FO) tracking based on the set of TCI states.
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