Technologies for layer 1 / layer 2 triggered mobility
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-08-13
Smart Images

Figure CN2025076042_13082026_PF_FP_ABST
Abstract
Description
TECHNOLOGIES FOR LAYER 1 / LAYER 2 TRIGGERED MOBILITYTECHNICAL FIELD
[0001] This application relates generally to communication networks and, in particular, to layer 1 / layer 2 triggered mobility in said communication networks.BACKGROUND
[0002] Third Generation Partnership Project (3GPP) Technical Specifications (TSs) define standards for wireless networks. These TSs describe aspects related to signaling traffic through systems that incorporate wireless networks.BRIEF DESCRIPTION OF THE DRAWINGS
[0003] FIG. 1 illustrates a network environment in accordance with some embodiments.
[0004] FIG. 2 illustrates an example layer 1 (L1) / layer 2 (L2) triggered mobility (LTM) configuration in accordance with some embodiments.
[0005] FIG. 3 illustrates configuration associations in accordance with some embodiments.
[0006] FIG. 4 is a signaling diagram in accordance with some embodiments.
[0007] FIG. 5 is another signaling diagram in accordance with some embodiments.
[0008] FIG. 6 illustrates an operational flow / algorithmic structure in accordance with some embodiments.
[0009] FIG. 7 illustrates another operational flow / algorithmic structure in accordance with some embodiments.
[0010] FIG. 8 illustrates a user equipment in accordance with some embodiments.
[0011] FIG. 9 illustrates a network device in accordance with some embodiments.DETAILED DESCRIPTION
[0012] The following detailed description refers to the accompanying drawings. The same reference numbers may be used in different drawings to identify the same or similar elements. In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular structures, architectures, interfaces, and techniquesin order to provide a thorough understanding of the various aspects of various embodiments. However, it will be apparent to those skilled in the art having the benefit of the present disclosure that the various aspects of the various embodiments may be practiced in other examples that depart from these specific details. In certain instances, descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the various embodiments with unnecessary detail. For the purposes of the present document, the phrases “A / B” and “A or B” mean (A) , (B) , or (A and B) ; and the phrase “based on A” means “based at least in part on A, ” for example, it could be “based solely on A” or it could be “based in part on A. ”
[0013] The following is a glossary of terms that may be used in this disclosure.
[0014] The term “circuitry” as used herein refers to, is part of, or includes hardware components that are configured to provide the described functionality. The hardware components may include an electronic circuit, a logic circuit, a processor (shared, dedicated, or group) or memory (shared, dedicated, or group) , an application specific integrated circuit (ASIC) , a field-programmable device (FPD) (e.g., a field-programmable gate array (FPGA) , a programmable logic device (PLD) , a complex PLD (CPLD) , a high-capacity PLD (HCPLD) , a structured ASIC, or a programmable system-on-a-chip (SoC) ) , or a digital signal processor (DSP) . In some embodiments, the circuitry may execute one or more software or firmware programs to provide at least some of the described functionality. The term “circuitry” may also refer to a combination of one or more hardware elements (or a combination of circuits used in an electrical or electronic system) with the program code used to carry out the functionality of that program code. In these embodiments, the combination of hardware elements and program code may be referred to as a particular type of circuitry.
[0015] The term “processor circuitry” as used herein refers to, is part of, or includes circuitry capable of sequentially and automatically carrying out a sequence of arithmetic or logical operations, or recording, storing, or transferring digital data. The term “processor circuitry” may refer an application processor, baseband processor, a central processing unit (CPU) , a graphics processing unit, a single-core processor, a dual-core processor, a triple-core processor, a quad-core processor, or any other device capable of executing or otherwise operating computer-executable instructions, such as program code, software modules, or functional processes.
[0016] The term “interface circuitry” as used herein refers to, is part of, or includes circuitry that enables the exchange of information between two or more components or devices. The term “interface circuitry” may refer to one or more hardware interfaces, for example, buses, I / O interfaces, peripheral component interfaces, and network interface cards.
[0017] The term “user equipment” or “UE” as used herein refers to a device with radio communication capabilities that may allow a user to access network resources in a communications network. The term “user equipment” or “UE” may be considered synonymous to, and may be referred to as, client, mobile, mobile device, mobile terminal, user terminal, mobile unit, mobile station, mobile user, subscriber, user, remote station, access agent, user agent, receiver, radio equipment, reconfigurable radio equipment, or reconfigurable mobile device. Furthermore, the term “user equipment” or “UE” may include any type of wireless / wired device or any computing device including a wireless communications interface.
[0018] The term “computer system” as used herein refers to any type interconnected electronic devices, computer devices, or components thereof. Additionally, the term “computer system” or “system” may refer to various components of a computer that are communicatively coupled with one another. Furthermore, the term “computer system” or “system” may refer to multiple computer devices or multiple computing systems that are communicatively coupled with one another and configured to share computing or networking resources.
[0019] The term “resource” as used herein refers to a physical or virtual device, a physical or virtual component or asset within a computing or network environment, or a physical or virtual component within, accessible by, or available to a device or component. Resources could include, but are not limited to, memory space / usage, processor / CPU time, processor / CPU usage, processor and accelerator loads, hardware time or usage, electrical power, input / output operations, ports or network sockets, channel / link allocations, throughput, or workload units. A “hardware resource” may refer to compute, storage, or networking resources provided by physical hardware elements. A “virtualized resource” may refer to compute, storage, or networking resources provided by virtualization infrastructure to an application, device, or system. The term “communication resource” may refer to resources that are accessible by, or available to, computer devices / systems for transferring information over a channel of a communication network. For example, communication resources may include, but are not limited to, time / frequency resources, code resources, modulation resources, etc. The term “system resources” may refer to any kind of shared entities to provide services, and may include computing or network resources. System resources may be considered as a set of coherent functions, network data objects or services, accessible through a server where such system resources reside on a single host or multiple hosts and are clearly identifiable.
[0020] The term “channel” as used herein refers to any transmission medium, either tangible or intangible, which is used to communicate data or a data stream. The term “channel” may be synonymous with or equivalent to “communications channel, ” “data communications channel, ” “transmission channel, ” “data transmission channel, ” “access channel, ” “data access channel, ” “link, ” “data link, ” “carrier, ” “radio-frequency carrier, ” or any other like term denoting a pathway or medium through which data is communicated. Additionally, the term “link” as used herein refers to a connection between two devices for the purpose of transmitting and receiving information.
[0021] The terms “instantiate, ” “instantiation, ” and the like as used herein refers to the creation of an instance. An “instance” also refers to a concrete occurrence of an object, which may occur, for example, during execution of program code.
[0022] The term “connected” may mean that two or more elements, at a common communication protocol layer, have an established signaling relationship with one another over a communication channel, link, interface, or reference point.
[0023] The term “network element” as used herein refers to physical or virtualized equipment or infrastructure used to provide wired or wireless communication network services. The term “network element” may be considered synonymous to or referred to as a networked computer, networking hardware, network equipment, network node, or a virtualized network function.
[0024] The term “information element” refers to a structural element containing one or more fields. The term “field” refers to individual contents of an information element, or a data element that contains content. An information element may include one or more additional information elements.
[0025] FIG. 1 illustrates a network environment 100 in accordance with some embodiments. The network environment 100 may include user equipment (UE) 104 communicatively coupled with base station 108 of a radio access network (RAN) 110. The UE 104 and the base station 108 may communicate over air interfaces compatible with 3GPP TSs, such as those that define a Fifth Generation (5G) new radio (NR) system or a later system (e.g., Sixth Generation (6G) system) . The base station 108 may provide user plane (UP) and control plane (CP) protocol terminations toward the UE 104.
[0026] The network environment 100 may further include a core network (CN) 112. For example, the CN 112 may comprise a 5th Generation Core network (5GC) , a 6th Generation Core network (6GC) , or later generation core network. The CN 112 may be coupled to the base station 108 via a fiber optic or wireless backhaul. The CN 112 may provide functions for the UE 104 via the base station 108. These functions may include managing subscriber profile information, subscriber location, authentication of services, or switching functions for voice and data sessions.
[0027] The network environment 100 may further include an external data network 120, which may be accessed by the UE 104 via the RAN 110.
[0028] Operations described herein as being performed by a device (for example, the UE 104 or the base station 108) may be fully, substantially, or partially performed by processor circuitry implemented within the device.
[0029] As further illustrated in FIG. 1, the network environment 100 may further include a base station 114 with which the UE 104 may also connect. The base station 114 may be part of the same RAN 110 as the base station 108. In some embodiments, the base station 114 may support the same RAT as the base station 108 (e.g., the base stations 108 and 114 are both a gNB to support a 5G RAT) . Additionally, or alternatively, the base station 114 may support a different RAT from the base station 108 (e.g., Long-Term Evolution (LTE) and / or a future RAT) . In an example, both the base station 108 and the base station 114 may be transmission and reception points (TRPs) of a same gNB or different gNBs.
[0030] In embodiments, event-triggered layer 1 (L1) measurements may be used to select a candidate beam / cell to trigger early synchronization, or select a target beam / cell and trigger L1 / layer 2 (L2) triggered mobility (LTM) cell switch procedure. To do so, the RAN 110 (e.g., base station 108) may provide the UE 104 with LTM configuration information that configures channel state information (CSI) measurements and reporting associated with various LTM trigger events.
[0031] FIG. 2 illustrates LTM configuration information 200 in accordance with some embodiments. The LTM configuration information 200 may be provided to the UE 104 from the RAN 110 by radio resource control (RRC) signaling. The LTM configuration information 200 may include an LTM configuration information element (IE) (LTM config) 204 that is part of an RRC reconfiguration IE (RRCReconfig) . The LTM config 204 may include a CSI resource configuration list (CSI-ResourceConfigList) parameter that points to a list of one or LTM CSI resource configurations IEs (LTM-CSI-ResourceConfigs) 208. Each LTM-CSI-ResourceConfig may include an LTM CSI resource identifier (LTM-CSI-ResourceID) , an LTM CSI resource set (LTM-CSI-ResourceSet) , which may be CSI-reference signal (RS) resource set or a synchronization signal block (SSB) resource set, to define measurement resources, and an associated candidate cell ID.
[0032] The LTM configuration information 200 may further include a CSI measurement configuration IE (CSI-MeasConfig) 212, which may be part of a serving cell configuration IE (ServingCellConfig) , which may be part of the RRCReconfig. The CSI-MeasConfig 212 may include an LTM CSI report configuration list (LTM-CSI-ReportConfig (list) ) parameter that points to a list of one or more LTM CSI report configuration IEs (LTM-CSI-ReportConfigs) 216. Each LTM-CSI-ReportConfigmay include an LTM-CSI-ResourceID that ties the report configuration to the resource configuration. Each LTM-CSI-ReportConfigmay further include an LMT CSI event configuration (LTM-CSI-EventConfig) , an LTM report configuration type (LTM-ReportConfigType) (for example, a measurement report (MR) transmission (Tx) resource, which may be periodic, semi-persistent on physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) , or aperiodic) , and LTM report content. Except as otherwise described herein, the LTM configuration information 200 may be consistent with RRC configuration aspects and definitions provided in 3GPP TS 38.331 18.4.0 (2024-12-20) .
[0033] FIG. 3 illustrates configuration associations 300 that may result from the LTM configuration information 200 in accordance with some embodiments. The configuration associations 300 may include various LTM-CSI-ReportConfigIDs from LTM-CSI-ReportConfigID list 304 associated with both LTM-CSI-ResourceConfigs from LTM-CSI-ResourceConfig list 308 and transmission resources from L1 CSI Report Transmission Resources 312.
[0034] The LTM events configured through the LTM configuration information 200 may include events of various event types that are based on beam specific quality of serving cell and candidate cells. The different types of LTM events, referred to, herein as, LTM events #2, #3, #4, and #5, may be associated with different criteria. LTM event #2 may be triggered based on a beam of the serving cell becoming worse than an absolute threshold. LTM event #3 may be based on a beam of the candidate cell becoming an amount of offset better than a beam of the serving cell. LTM event #4 may be based on a beam of a candidate cell becoming better than an absolute threshold. LTM event #5 may be based on a beam of a serving cell becoming worse than a first absolute threshold and a beam of the candidate cell becoming better than a second absolute threshold. The thresholds described with respect to the LTM events may be configured by RRC signaling or otherwise predefined. The current beam, e.g., the beam corresponding to an indicated transmission configuration indicator (TCI) state, may be used for event evaluation in L1 measurement reporting for the serving cell. The same RS type (for example, SSB or CSI-RS) may be used for both serving and neighbor cell for LTM events #3 and #5. In some embodiments, event criteria for a particular event may include separate entering and leaving conditions and hysteresis parameters associated therewith. The beam qualities referred to with respect to the LTM event criteria may be, for example, L1-reference signal receive power (RSRP) or signal to interference plus noise ratio (SINR) .
[0035] The event-triggered L1-measurements may be reported by the UE 104 to the RAN 110 using an LTM MR media access control (MAC) control element (CE) . The LTM MR MAC CE may include: triggered event information (e.g., ReportConfigID) ; information on up to N beams, where N is configurable by the RAN 110; and information (for example, quality such as L1-RSRP or SINR) of current beam, based on configuration by the RAN 110.
[0036] The information on up to N beams may include a candidate beam ID (for example, an SSB resource identifier (SSBRI) or CSI-RS resource identifier (CRI) ; and candidate beam quality of the associated candidate beam. In some embodiments, the candidate beams included in the LTM MR MAC CE may include beams that satisfy criteria of an associated event and beams that do not satisfy the criteria as will be described herein in further detail.
[0037] In some embodiments, a single MAC CE format may be used for both the SSB and CSI-RS reference signals.
[0038] Various aspects of the disclosure describe details related to including information associated with beams that do not satisfy the criteria in the LTM MR MAC CE, details on a truncated LTM MR MAC CE design in the event the uplink grant cannot accommodate a full set of the information to be included in the LTM MR MAC CE; details on the beam’s measurement results to be reported in the LTM MR MAC CE; and operations to assemble in transmit the LTM MR MAC CE triggered by multiple LTM criteria.
[0039] FIG. 4 illustrates a signaling diagram 400 in accordance with some embodiments.
[0040] At 404, the base station 108 may send LTM configuration information to the UE 104. The LTM configuration information may include messages and IEs similar to that described above with respect to FIG. 2, for example. The LTM configuration information may configure the UE 104 to monitor one or more LTM events.
[0041] At the first point in time (T1) , the UE 104 may determine that one or more monitored eventsare triggered (for example, one or more associated criteria is fulfilled) and the UE 104 may trigger an LTM MR MAC CE transmission. As shown, the UE 104 may determine that LTM event #3 is triggered. The UE 104 may then obtain UL resources for transmitting an LTM MR MAC CE at 408. In some embodiments, the UL resources may be obtained from a previously scheduled PUSCH transmission that has sufficient excess uplink resources. In the event uplink resources are not available, the UE 104 may generate and transmit an LTM MR scheduling request (SR) at 412 and receive a corresponding uplink grant that provides an indication of the requested uplink resources at 416.
[0042] If the LTM MR MAC CE transmission is triggered, at T1, based on multiple events / criteria, the UE 104 may generate / transmit an LTM MR SR for all the events, or may generate / transmit LTM MR SR for each event separately. Thus, an LTM MR SR may be applicable to all LTM events or may be dedicated for specific LTM events.
[0043] When the UE 104 has the available uplink grant, the UE 104 may determine whether it still has a valid LTM MR trigger at a second point in time (T2) . This determination may be based on the latest beam measurements performed by the UE 104. As shown, the UE 104 may determine, at T2, that LTM events #2 and #3 are valid (for example, the criteria associated with LTM events #2 and #3 are satisfied based on the latest beam measurements) . Upon determining that the UE 104 has a valid LTM MR trigger, the UE 104 may assemble an LTM MR MAC CE for each event. One LTM MR MAC CE may include beam information triggered by one event. For example, as shown, LTM MR MAC CE #1 may be assembled to carry information corresponding to LTM event #2, and LTM MR MAC CE #2 may be assembled to carry information corresponding to LTM event #3. Information corresponding to all beams that satisfy an event’s criteria are to be included in the LTM MR MAC CE corresponding to that event.
[0044] After assembling the LTM MR MAC CEs, the UE 104 may generate and transmit a report that includes the LTM MR MAC CEs at 420. The report may be, for example, a PUSCH transmission using the resources provided by the UL grant 416 or otherwise available.
[0045] In some embodiments, when multiple LTM MR MAC CEs are triggered by different events, the UE 104 may determine a transmission order (also referred to as “priority order” ) based on UE implementation. In other embodiments, the transmission order may be predefined or configured by the RAN 110. For example, the transmission order may indicate that LTM MR MAC CEs associated with the first entering report have a highest priority (and, if present, are to be transmitted first) , LTM MR MAC CEs associated with a leaving condition have a second-highest priority (and are to be transmitted after MAC CEs associated with the first entering report if both the present) , and LTM MR MAC CEs associated with a periodic report have a lowest priority (and are to be transmitted after MAC CEs associated with both the first entering report and leaving condition) . A first entering report may be the first report having an LTM MR MAC CE that indicates criteria for an event has been satisfied, while a leaving report may be a report having an LTM MR MAC CE that indicates criteria for an event has not been satisfied.
[0046] In another example, the transmission order may provide relative priorities with respect to LTM MR MAC CEs based on associated events. For example, LTM MR MAC CEs associated with LTM events #3, #4, and #5 may be given priority over those associated with LTM event #2. This priority order may be justified given that serving beam information associated with the event #2 criteria (the serving beam being worse than an absolute threshold) would be carried in an LTM MR MAC CE triggered by other events. In some embodiments, if the multiple events triggered include an LTM event #2 and another LTM event that carries the current serving beam information, the UE 104 may not assemble the LTM MR MAC CE transmission triggered by LTM event #2.
[0047] When the UE 104 assembles each LTM MR MAC CE, the beam information is according to the latest measurementresults available at T2. If a non-satisfactory beam report is configured, the UE 104 may select the beam according to one or more of the following options.
[0048] In a first option, the UE 104 may include within an LTM MR MAC CE information on up to M beams that do not satisfy the criteria of an associated event. The up to M beams may be from the same candidate cell and from the same resource set as the beams that do satisfy the criteria that are also included in the LTM MR MAC CE. In some embodiments, the non-satisfactory beams within the LTM MR MAC CE may be limited to those having a measurement result greater than a threshold. The parameter M and threshold used in the first option may be configured by the RAN 110 or otherwise predefined.
[0049] An example of the first option may be described based on an assumption that, for LTM event #3, an associated resource set is configured to include RS #1, #2, and #3 of candidate cell #1 and RS #4, #5, and #6 of candidate cell #2; a maximum number of reported beams for the LTM MR MAC CE is three; and a maximum number of candidate beam that do not satisfy the criteria is one. If RS#1 of candidate cell#1 meets the criteria of LTM event#3, the UE 104 may assemble the LTM MR MAC CE to include information associated with: the satisfactory beam (for example, RS#1 of candidate cell#1) ; non-satisfactory beam (for example, RS#2 ofcandidate cell#1) ; and the current serving beam.
[0050] In a second option, the UE 104 may include within an LTM MR MAC CE information on up to M beams per candidate cell to be reported. With this option, the up to M beams may include both beamsthat satisfy the criteria and beams that do not satisfy the criteria. In some embodiments, the beams within the LTM MR MAC CE of the second option may be limited to those having a measurement result greater than a threshold. In some embodiments, a maximum number of beams that do not satisfy the criteria may also be configured across candidate cells. The parameter M and threshold (and maximum number of non-satisfactory beams, if present) used in the second option may be configured by the RAN 110 or otherwise predefined.
[0051] An example of the second option, using the threshold, may be described based on an assumption that, for LTM event#3, an associated resource set is configured to include RS#1, #2, and #3 of candidate cell#1 and RS#4, #5, and #6 of candidate cell#2; a maximum number of reported beams in the LTM MR MAC CE is three; the maximum number of reported beams per candidate cell in the LTM MR MAC CE is two; and the threshold of reported beam is X decibels (dB) . If RS #1 of candidate cell #1 meets the criteria of the LTM event #3, RSs #2 and #3 of candidate cell #1 do not meet the criteria, RS #2 has a measurement result greater than X and RS #3 has a measurement result less than X, the UE 104 may assemble the LTM MR MAC CE to include information associated with: the satisfactory beam (for example, RS#1 of the candidate cell#1) ; the non-satisfactory beam that meet the threshold X (for example, RS#2 of the candidate cell#1) ; and the current serving beam.
[0052] In a third option, the UE 104 may include within an LTM MR MAC CE information on up to M beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria of an associated event per candidate cell or per resource set. The parameter M used in the third option may be configured by the RAN 110 or otherwise predefined.
[0053] In some embodiments, the UL grant available to the UE 104 may not accommodate the full set of information to be included in the LTM MR MAC CE. In this event, the UE 104 may assemble a truncated LTM MR MAC CE to include the more important information. In some embodiments, the beam (s) to be reported in the truncated LTM MR MAC CE may follow an importance order defined as: high importance (including beams that satisfy the criteria) > medium importance (including current serving beam) > Low importance (include beams that do not satisfy the criteria) . To the extent some information needs to be dropped, the UE 104 may first drop the low importance information, followed by the medium importance information, followed by the high importance information. For the same importance level, if not all beams can be accommodated, the UE 104 may select the beam (s) according to the radio quality (for example, keep beam (s) with relatively higher radio quality and drop beam (s) with relatively lower radio quality) or according to UE implementation.
[0054] In some embodiments, if the UL grant available to the UE 104 does not accommodate the full set of information to be included in the LTM MR MAC CE, the UE 104 may reduce the payload size in other manners. For example, to save room, the UE 104 may just indicate RS IDs of the beams that satisfy the criteria in the LTM MR MAC CE, without including the corresponding measurement results.
[0055] An example of a truncated LTM MR MAC CE may be described based on an assumption that, for LTM event #3, an associated resource set is configured to include RS#1, #2, and #3 of candidate cell#1 and RS#4, #5, and #6 of candidate cell#2. If RS #1 and #2 of candidate cell#1 meet the criteria and trigger the LTM MR MAC CE reporting, but the RAN 110 provides an UL grant that can only carry two full RS information (for example, RS ID and measurement result) . In this example, the UE 104 may assemble a truncated LTM MR MAC CEaccording to one of the following options.
[0056] In a first option, the UE 104 may assemble the truncated LTM MR MAC CE to include satisfactory beam information (for example, RS#1 and RS#2 of the candidate cell#1) . This beam information may include both ID and measurement results. However, due to size constraints, information about the current serving beam may not be included.
[0057] In a second option, the UE 104 may assemble the truncated LTM MR MAC CE to include: abbreviated satisfactory beam information (for example, IDs associated with RS#1 and #2 of the candidate cell#1, but not measurement results) ; and measurement results of the current serving beam.
[0058] Another example of a truncated LTM MR MAC CE may be described based on an assumption that, for LTM event #3, an associated resource set is configured to include RS#1, #2, and #3 of candidate cell#1 and RS#4, #5, and #6 of candidate cell#2. If RS #1 and #2 of candidate cell #1 meet the criteria and trigger the LTM MR MAC CE reporting, RS#1’s quality is greater than RS#2's quality, and RAN 110 provides an UL grant that can only carry one full RS information. In this example, the UE 104 may assemble a truncated LTM MR MAC CE that only carriesinformation for the RS#1 of the candidate cell#1. This information may be full information including both ID and measurement result.
[0059] In some embodiments, when the UE 104 transmits an LTM MR MAC CE, the UE 104 may start a timer to control transmission frequency. The timer can be designed per event trigger, or for all event triggers in a general way. In these embodiments, the UE 104 may only be allowed to trigger another LTM MR MAC CE (or related SR) when the timer expires.
[0060] In some embodiments, if the timer is running and the UE 104 has an available UL grant, the UE 104 can transmit the LTM MR MAC CE but with low priority. For example, the LTM MR MAC CE may be transmitted in place of padding bits in another uplink transmission.
[0061] In some embodiments, if the UE 104 has padding for an UL transmission, the UE can generate a padding LTM MR MAC CE to replace the padding bits. The padding LTM MR MAC CE may carry the following information: current serving beam and quality; desirable target candidate cells and associated beam information based on L1 or layer 3 (L3) measurement reports. In some embodiments, the target cell / beam may be selected based on a UE preference.
[0062] FIG. 5 illustrates a signaling diagram 500 in accordance with some embodiments.
[0063] At 504, the base station 108 may send LTM configuration information to the UE 104. The LTM configuration information may configure the UE 104 to monitor one or more LTM events in a manner similar to that described above with respect to signal 404 of FIG. 4.
[0064] At the first point in time (T1) , the UE 104 may determine that one or more monitored events are triggered (for example, one or more associated criteria is fulfilled) and the UE 104 may trigger an LTM MR MAC CE transmission. As shown, the UE 104 may determine that LTM event #3 is triggered. The UE 104 may then obtain UL resources for transmitting an LTM MR MAC CE at 508. In some embodiments, the UL resources may be obtained from a previously scheduled PUSCH transmission that has sufficient excess uplink resources. In the event uplink resources are not available, the UE 104 may generate and transmit an LTM MR SR at 512 and receive a corresponding uplink grant that provides an indication of the requested uplink resources at 516.
[0065] When the UE 104 has the available uplink grant, the UE 104 may determine whether it still has a valid LTM MR trigger at a second point in time (T2) . In this embodiment, the UE 104 may determine that LTM event #3 is no longer valid. In this case, the UE 104 may not assemble any LTM MR MAC CE, nor may any report be transmitted on the PUSCH resources at 520.
[0066] In some embodiments, if the UE 104 determines, at T2, that the LTM event #3 is no longer valid, but another LTM event is valid, the UE 104 may generate the LTM MR MAC CE for the other LTM event and use the granted PUSCH resources for transmission of a corresponding report.
[0067] FIG. 6 illustrates an operational flow / algorithmic structure 600 in accordance with some embodiments. In some embodiments, the operational flow / algorithmic structure 600 may be implemented by a UE such as, for example, UE 104, UE 800, or components thereof, for example, processors 804A.
[0068] The operational flow / algorithmic structure 600 may include, at 604, receiving LTM configuration information. The LTM configuration information, which may be similar to that described elsewhere herein, may configure a plurality of LTM events that the UE is to monitor.
[0069] The operational flow / algorithmic structure 600 may further include, at 608, determining the first LTM event of the plurality of LTM events is triggered. This determination may be based on first beam information obtained with respect to measurements performed on downlink reference signals within serving or candidate cells. For example, the UE / processor may determine the first beam information satisfies criteria associated with the first LTM event and, therefore, the first LTM event is triggered.
[0070] The operational flow / algorithmic structure 600 may further include, at 612, identifying uplink resources. In some embodiments the uplink resources may be identified in an existing PUSCH resource, for example, a PUSCH resource scheduled before determining that the first LTM event was triggered. In other embodiments, if uplink resources are not available to the UE / processor, the UE / processor may generate an LTM MR SR for transmission to the network. The UE / processor may then receive an uplink grant corresponding to the LTM MR SR. The uplink grant may indicate the uplink resources. In some embodiments, the LTM MR SR is applicable to a plurality of LTM events. In other embodiments, the LTM MR SR is dedicated to the first LTM event.
[0071] The operational flow / algorithmic structure 600 may further include, at 616, determining second beam information. The second beam information may include the most recent measurements performed with respect to the first LTM event.
[0072] The operational flow / algorithmic structure 600 may further include, at 620, determining whether to generate a report for the first event based on the second beam information.
[0073] If it is determined, at 620, that the first LTM event is no longer triggered, the UE / processor may determine that it is not to generate a report to be transmitted using the uplink resources.
[0074] If it is determined, at 620, that the first LTM event is still triggered, the UE / processor may determine that it is to generate the report. The UE / processor may first assemble an LTM MR MAC CE that includes at least a portion of the second beam information. The report may then be generated to include the LTM MR MAC CE. The report may be output for transmission to the network using the uplink resources.
[0075] In some embodiments, the UE / processor may determine a plurality of LTM events or triggered. The UE / processor may then generate a plurality of LTM MR MAC CEs to respectively include beam information associated with the plurality of LTM events. If the uplink resources are not sufficient for all of the LTM MR MAC CEs, the UE / processor may determine a priority order associated with the LTM MR MAC CEs and the report may be generated to include a subset of the LTM MR MAC CEs. In some embodiments, the priority order may indicate the first interim report is associated with the highest priority, a leaving condition is associated with the second highest priority, and aperiodic report is associated with the third highest priority. In some embodiments, the priority order may indicate a plurality of event types (for example, LTM events #3, #4, and #5) are associated with a priority higher than LTM event #2.
[0076] In some embodiments, the portion of the second beam information included in the LTM MR MAC CE includes information corresponding to a plurality of beams that satisfy criteria of the first LTM event.
[0077] In some embodiments, the portion of the second beam information included in the LTM MR MAC CE includes information corresponding to at least one beam that satisfies criteria of the first LTM event and information corresponding to one or more beams that do not satisfy the criteria of the first LTM event.
[0078] In some embodiments, the LTM configuration may include one or more parameters that limit information that is to be included in the LTM MR MAC CE. For example, the one or more parameters may include: a maximum number of beams that do not satisfy criteria of an associated event; a minimum measurement result threshold; a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria; or a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria per candidate cell or per resource set.
[0079] In some embodiments, the portion of the second beam information included in the LTM MR MAC CE includes information corresponding to a current serving beam. This information may include measurement results performed on a reference signal associated with the serving beam.
[0080] In some embodiments, the portion included in the LTM MR MAC CE is a first portion of the second beam information. In these embodiments, if the uplink resources are determined not to accommodate all of the second beam information, the UE / processor may select a second portion of the beam information to not include in the LTM MR MAC CE. The selection may be based on importance levels associated with report content. The importance levels may set first report content associated with beams satisfying criteria of the first event with a first level, second report content associated with a current serving beam with a second level, and third report content associated with beams not satisfying the criteria with a third level. The first level is greater than the second level and the second level is greater than the first level.
[0081] In some embodiments, if the uplink resources are not sufficient to accommodate all of the second beam information, the UE / processor may generate abbreviated information to include, for example, RS IDs but not measurement results corresponding to the beams satisfying the criteria.
[0082] In some embodiments, after the UE / processor outputs the first report for transmission to the network, the UE / processor may start a timer. While the timer is running, the UE / processor may either prevent output of another report for transmission or may output another report only as a low-priority transmission. In some embodiments, the timer may prevent output of subsequent reports corresponding to any LTM event, ormay prevent output of subsequent reports associated specifically with the first LTM event.
[0083] In some embodiments, the UE / processor may determine uplink resources have extra capacity and may a padding LTM MR MAC CE that includes an indication of a measurement report associated with a current serving beam, or a measurement report associated with a candidate cell based on the LTM configuration information.
[0084] FIG. 7 illustrates an operational flow / algorithmic structure 700 in accordance with some embodiments. In some embodiments, the operational flow / algorithmic structure 700 may be implemented by a base station such as, for example, base station 108, network device 900, or components thereof, for example, processors 904A.
[0085] The operational flow / algorithmic structure 700 may include, at 704, generating LTM configuration information. The LTM configuration information may be similar to that described elsewhere herein.
[0086] The operational flow / algorithmic structure 700 may further include, at 708, generating one or more messages to include the LTM configuration information for transmission to a UE.
[0087] FIG. 8 illustrates a UE 800 in accordance with some embodiments. The UE 800 may be similar to and substantially interchangeable with UE 104.
[0088] The UE 800 may be any mobile or non-mobile computing device, such as, for example, mobile phones, computers, tablets, industrial wireless sensors (for example, microphones, carbon dioxide sensors, pressure sensors, humidity sensors, thermometers, motion sensors, accelerometers, laser scanners, fluid level sensors, inventory sensors, electric voltage / current meters, or actuators) , video surveillance / monitoring devices (for example, cameras or video cameras) , wearable devices (for example, a smart watch) , or Internet-of-things devices.
[0089] The UE 800 may include processors 804, RF interface circuitry 808, memory / storage 812, user interface 816, sensors 820, driver circuitry 822, power management integrated circuit (PMIC) 824, antenna 826, and battery 828. The components of the UE 800 may be implemented as integrated circuits (ICs) , portions thereof, discrete electronic devices, or other modules, logic, hardware, software, firmware, or a combination thereof. The block diagram of FIG. 8 is intended to show a high-level view of some of the components of the UE 800. However, some of the components shown may be omitted, additional components may be present, and different arrangement of the components shown may occur in other implementations.
[0090] The components of the UE 800 may be coupled with various other components over one or more interconnects 832, which may represent any type of interface, input / output, bus (local, system, or expansion) , transmission line, trace, or optical connection that allows various circuit components (on common or different chips or chipsets) to interact with one another.
[0091] The processors 804 may include processor circuitry such as, for example, baseband processor circuitry (BB) 804A, central processor unit circuitry (CPU) 804B, and graphics processor unit circuitry (GPU) 804C. The processors 804 may include any type of circuitry or processor circuitry that executes or otherwise operates computer-executable instructions, such as program code, software modules, or functional processes from memory / storage 812 to cause the UE 800 to perform operations as described herein (e.g., operations associated with LTMoperations) . The processors 804 may also include interface circuitry 804D to enable communication by, for example, communicatively coupling the processor circuitry with one or more other components of the UE 800.
[0092] In some embodiments, the baseband processor 804A may access a communication protocol stack 836 in the memory / storage 812 to communicate over a 3GPP compatible network. In general, the baseband processor 804A may access the communication protocol stack 836 to: perform user plane functions at a PHY layer, MAC layer, RLC layer, PDCP layer, SDAP layer, and PDU layer; and perform control plane functions at a PHY layer, MAC layer, RLC layer, PDCP layer, RRC layer, and a NAS layer. In some embodiments, the PHY layer operations may additionally / alternatively be performed by the components of the RF interface circuitry 808.
[0093] The baseband processor 804A may generate or process baseband signals or waveforms that carry information in 3GPP-compatible networks. In some embodiments, the waveforms for NR may be based on cyclic prefix OFDM (CP-OFDM) in the uplink or downlink, and discrete Fourier transform spread OFDM (DFT-S-OFDM) in the uplink.
[0094] The memory / storage 812 may include one or more non-transitory, computer-readable media that includes instructions (for example, communication protocol stack 836) that may be executed by one or more of the processors 804 to cause the UE 800 to perform operations as described herein (e.g., operations associated with CLTM with a pre-condition) .
[0095] The memory / storage 812 includes any type of volatile or non-volatile memory that may be distributed throughout the UE 800. In some embodiments, some of the memory / storage 812 may be located on the processors 804 themselves (for example, memory / storage 812 may be part of a chipset that corresponds to the baseband processor 804A) , while other memory / storage 812 is external to the processors 804 but accessible thereto via a memory interface. The memory / storage 812 may include any suitable volatile or non-volatile memory such as, but not limited to, dynamic random access memory (DRAM) , static random access memory (SRAM) , erasable programmable read only memory (EPROM) , electrically erasable programmable read only memory (EEPROM) , Flash memory, solid-state memory, or any other type of memory device technology.
[0096] The RF interface circuitry 808 may include transceiver circuitry and a radio frequency front module (RFEM) that allows the UE 800 to communicate with other devices over a radio access network. The RF interface circuitry 808 may include various elements arranged in transmit or receive paths. These elements may include, for example, switches, mixers, amplifiers, filters, synthesizer circuitry, and control circuitry.
[0097] In the receive path, the RFEM may receive a radiated signal from an air interface via antenna 826 and proceed to filter and amplify (with a low-noise amplifier) the signal. The signal may be provided to a receiver of the transceiver that down-converts the RF signal into a baseband signal that is provided to the baseband processor of the processors 804.
[0098] In the transmit path, the transmitter of the transceiver up-converts the baseband signal received from the baseband processor and provides the RF signal to the RFEM. The RFEM may amplify the RF signal through a power amplifier prior to the signal being radiated across the air interface via the antenna 826.
[0099] In various embodiments, the RF interface circuitry 808 may be configured to transmit / receive signals in a manner compatible with NR access technologies.
[0100] The antenna 826 may include antenna elements to convert electrical signals into radio waves to travel through the air and to convert received radio waves into electrical signals. The antenna elements may be arranged into one or more antenna panels. The antenna 826 may have antenna panels that are omnidirectional, directional, or a combination thereof to enable beamforming and multiple input, multiple output communications. The antenna 826 may include microstrip antennas, printed antennas fabricated on the surface of one or more printed circuit boards, patch antennas, or phased array antennas. The antenna 826 may have one or more panels designed for specific frequency bands including bands in FR1 or FR2.
[0101] The user interface 816 includes various input / output (I / O) devices designed to enable user interaction with the UE 800. The user interface 816 includes input device circuitry and output device circuitry. Input device circuitry includes any physical or virtual means for accepting an input including, inter alia, one or more physical or virtual buttons (for example, a reset button) , a physical keyboard, keypad, mouse, touchpad, touchscreen, microphones, scanner, headset, or the like. The output device circuitry includes any physical or virtual means for showing information or otherwise conveying information, such as sensor readings, actuator position (s) , or other like information. Output device circuitry may include any number or combinations of audio or visual display, including, inter alia, one or more simple visual outputs / indicators (for example, binary status indicators such as light emitting diodes (LEDs) and multi-character visual outputs, or more complex outputs such as display devices or touchscreens (for example, liquid crystal displays (LCDs) , LED displays, quantum dot displays, and projectors) , with the output of characters, graphics, multimedia objects, and the like being generated or produced from the operation of the UE 800.
[0102] The sensors 820 may include devices, modules, or subsystems whose purpose is to detect events or changes in their environment and send the information (sensor data) about the detected events to some other device, module, or subsystem. Examples of such sensors include inertia measurement units comprising accelerometers, gyroscopes, or magnetometers; microelectromechanical systems or nanoelectromechanical systems comprising 3-axis accelerometers, 3-axis gyroscopes, or magnetometers; level sensors; flow sensors; temperature sensors (for example, thermistors) ; pressure sensors; barometric pressure sensors; gravimeters; altimeters; image capture devices (for example, cameras or lensless apertures) ; light detection and ranging sensors; proximity sensors (for example, infrared radiation detector and the like) ; depth sensors; ambient light sensors; ultrasonic transceivers; and microphones or other like audio capture devices.
[0103] The driver circuitry 822 may include software and hardware elements that operate to control particular devices that are embedded in the UE 800, attached to the UE 800, or otherwise communicatively coupled with the UE 800. The driver circuitry 822 may include individual drivers allowing other components to interact with or control various input / output (I / O) devices that may be present within, or connected to, the UE 800. For example, driver circuitry 822 may include a display driver to control and allow access to a display device, a touchscreen driver to control and allow access to a touchscreen interface, sensor drivers to obtain sensor readings of sensors 820 and control and allow access to sensors 820, drivers to obtain actuator positions of electro-mechanic components or control and allow access to the electro-mechanic components, a camera driver to control and allow access to an embedded image capture device, audio drivers to control and allow access to one or more audio devices.
[0104] The PMIC 824 may manage power provided to various components of the UE 800. In particular, with respect to the processors 804, the PMIC 824 may control power-source selection, voltage scaling, battery charging, or DC-to-DC conversion.
[0105] A battery 828 may power the UE 800, although in some examples the UE 800 may be mounted deployed in a fixed location and may have a power supply coupled to an electrical grid. The battery 828 may be a lithium ion battery, a metal-air battery, such as a zinc-air battery, an aluminum-air battery, a lithium-air battery, and the like. In some implementations, such as in vehicle-based applications, the battery 828 may be a typical lead-acid automotive battery.
[0106] FIG. 9 illustrates a network device 900 in accordance with some embodiments. The network device 900 may be similar to, and substantially interchangeable with, the base station 98, base station 114, and / or a component of the CN 112.
[0107] The network device 900 may include processors 904, RF interface circuitry 908 (if implemented as a base station) , core network (CN) interface circuitry 914, memory / storage circuitry 912, and antenna structure 926.
[0108] The components of the network device 900 may be coupled with various other components over one or more interconnects 928.
[0109] The processors 904, RF interface circuitry 908, memory / storage circuitry 912 (including communication protocol stack 910) , antenna structure 926, and interconnects 928 may be similar to like-named elements shown and described with respect to FIG. 8.
[0110] The processors 904 may include processor circuitry such as, for example, baseband processor circuitry (BB) 904A, central processor unit circuitry (CPU) 904B, and graphics processor unit circuitry (GPU) 904C. The processors 904 may include any type of circuitry or processor circuitry that executes or otherwise operates computer-executable instructions, such as program code, software modules, or functional processes from memory / storage circuitry 912 to cause the network device 900 to perform operations as described herein (e.g., operations associated with LTMoperation) . The processors 904 may also include interface circuitry 904D to communicatively couple the processor circuitry with one or more other components of the network device 900.
[0111] The CN interface circuitry 914 may provide connectivity to a core network, for example, a 5th Generation Core network (5GC) using a 5GC-compatible network interface protocol such as carrier Ethernet protocols, or some other suitable protocol. Network connectivity may be provided to / from the network device 900 via a fiber optic or wireless backhaul. The CN interface circuitry 914 may include one or more dedicated processors or FPGAs to communicate using one or more of the aforementioned protocols. In some implementations, the CN interface circuitry 914 may include multiple controllers to provide connectivity to other networks using the same or different protocols.
[0112] 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.
[0113] For one or more embodiments, at least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, or methods as set forth in the example section below. For example, the baseband circuitry as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below. For another example, circuitry associated with a UE, base station, or network element as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
[0114] 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.
[0115] For one or more embodiments, at least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, or methods as set forth in the example section below. For example, the baseband circuitry as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below. For another example, circuitry associated with a UE, base station, or network element as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.Examples
[0116] The following sections provide further exemplary embodiments.
[0117] Example 1 includes a method comprising: receiving layer 1 or layer 2 triggered mobility (LTM) configuration information that configures a plurality of LTM events; determining, based on first beam information, that a first LTM event of the plurality of LTM events is triggered; identifying uplink resources; determining second beam information associated with the first LTM event; and determining whether to generate a report, for transmission using the uplink resources, for the first LTM event based on the second beam information.
[0118] Example 2 includes the method of example 1 or some other example herein, wherein identifying uplink resources comprises: identifying the uplink resources in a physical uplink shared channel (PUSCH) resource scheduled before said determining that the first LTM event is triggered; or generating, based on said determining the first LTM event is triggered, an LTM measurement report (MR) scheduling request (SR) for transmission to a network and receiving an uplink grant corresponding to the MR SR, the uplink grant to indicate the uplink resources.
[0119] Example 3 includes the method of example 2 or some other example herein, wherein the LTM MR SR is applicable to a plurality of LTM events or is dedicated to the first LTM event.
[0120] Example 4 includes the method of example 1 or some other example herein, further comprising: determining, based on the second beam information, the first LTM event is no longer triggered; and determining not to generate the report based on said determining the first LTM event is no longer triggered.
[0121] Example 5 includes the method of example 1 or some other example herein, further comprising: determining, based on the second beam information, the first LTM event is still triggered; determining to generate the report based on said determining the first LTM event is still triggered; assembling an LTM MR media access control (MAC) control element (CE) to include at least a portion of the second beam information; and generating the report to include the LTM MR MAC CE for transmission to a network.
[0122] Example 6 includes the method of example 5 or some other example herein, further comprising: determining a plurality of LTM events are triggered; and generating a plurality of LTM MR MAC CEs to respectively include beam information associated with the plurality of LTM events.
[0123] Example 7 includes the method of example 6 or some other example herein, further comprising: determining a priority order associated with the plurality of LTM MR MAC CEs; and generating the report to include a subset of the plurality of LTM MR MAC CEs based on the priority order.
[0124] Example 8 includes the method of example 7 or some other example herein, wherein the priority order indicates a first entering report is associated with a highest priority, a leaving condition is associated with a second highest priority, and a periodic report is associated with a third highest priority.
[0125] Example 9 includes the method of example 7 or some other example herein, wherein the priority order indicates a plurality of event types are associated with a priority higher than LTM event #2 or some other example herein, wherein the plurality of event types include LTM event #3 or some other example herein, LTM event #4 or some other example herein, and LTM event #5.
[0126] Example 10 includes the method of example 5 or some other example herein, wherein the portion of the second beam information includes information corresponding to a plurality of beams that satisfy criteria of the first LTM event.
[0127] Example 11 includes the method of example 5 or some other example herein, wherein the portion of the second beam information includes information corresponding to at least one beam that satisfies criteria of the first LTM event and information corresponding to one or more beams that do not satisfy the criteria of the first LTM event.
[0128] Example 12 includes the method of example 5 or some other example herein, further comprising: determining, based on the LTM configuration, one or more parameters to limit information that is to be included in the LTM MR MAC CE, wherein the one or more parameters includes: a maximum number of beams that do not satisfy criteria of an associated event; a minimum measurement result threshold; a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria; or a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria per candidate cell or per resource set.
[0129] Example 13 includes the method of example 5 or some other example herein, wherein the portion of the second beam information includes information corresponding to a current serving beam.
[0130] Example 14 includes the method of example 5 or some other example herein, wherein the portion is a first portion and the method further comprises: determining the uplink resources do not accommodate all of the second beam information; and selecting, based on a said determining the uplink resources do not accommodate all of the second beam information, a second portion of the second beam information to not include in the LTM MR MAC CE.
[0131] Example 15 includes the method of example 14 or some other example herein, further comprising: determining importance levels associated with report content, wherein the importance levels set first report content associated with beams satisfying criteria of the first LTM event with a first level, second report content associated with a current serving beam with a second level, and third report content associated with beams not satisfying the criteria with a third level, wherein the first level is greater than the second level and the second level is greater than the first level; and selecting the first portion to be included in the LTM MR MAC CE and the second portion that is not to be included in the LTM MR MAC CE based on the importance levels.
[0132] Example 16 includes the method of example 14 or some other example herein, wherein the first portion includes reference signal identifiers associated with beams satisfying criteria of the first LTM event and the second portion includes measurement results corresponding to the beams satisfying the criteria.
[0133] Example 17 includes the method of example 5 or some other example herein, wherein the report is a first report and the method further comprises: outputting the first report for transmission to the network; starting a timer based on said outputting the first report; and outputting a second report while the timer is running as a low-priority transmission.
[0134] Example 18 includes the method of example 5 or some other example herein, wherein the report is a first report and the method further comprises: outputting the first report for transmission to the network; starting a timer based on said outputting the first report; and preventing output of a second report while timer is running.
[0135] Example 19 includes the method of example 18 or some other example herein, wherein the timer is to prevent output of subsequent reports corresponding to any LTM event, or is to prevent output of subsequent reports associated specifically with the first LTM event.
[0136] Example 20 includes the method of example 1 or some other example herein, further comprising: determining uplink resources have extra capacity; and generating a padding LTM measurement report (MR) media access control (MAC) control element (CE) that includes an indication of a measurement report associated with a current serving beam, or a measurement report associated with a candidate cell based on the LTM configuration information.
[0137] Example 21 includes a method comprising: generating layer 1 or layer 2 triggered mobility (LTM) configuration information that configures a plurality of LTM events and one or more parameters to limit information that is to be included in a LTM measurement report (MR) media access control (MAC) control element (CE) , wherein the one or more parameters includes: a maximum number of beams that do not satisfy criteria of an associated LTM event; a minimum measurement result threshold; or a total number of beams inclusive of beams that satisfy criteria of an associated LTM event and beams that do not satisfy the criteria; andgenerating one or more messages to include the LTM configuration information for transmission to a user equipment (UE) .
[0138] Example 22 includesthe method of example 21 or some other example herein, further comprising: receiving, from the UE, an LTM measurement report (MR) scheduling request (SR) ; andgenerating, for transmission to the UE, an uplink grant to provide an indication of uplink resources; andreceiving the LTM MR MAC CE in the uplink resources.
[0139] Another example may include an apparatus comprising means to perform one or more elements of a method described in or related to any of examples 1–22, or any other method or process described herein.
[0140] Another example may include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of a method described in or related to any of examples 1–22, or any other method or process described herein.
[0141] Another example may include an apparatus comprising logic, modules, or circuitry to perform one or more elements of a method described in or related to any of examples 1–22, or any other method or process described herein.
[0142] Another example may include a method, technique, or process as described in or related to any of examples 1–22, or portions or parts thereof.
[0143] Another example may include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform the method, techniques, or process as described in or related to any of examples 1–22, or portions thereof.
[0144] Another example may include a signal as described in or related to any of examples 1–22, or portions or parts thereof.
[0145] Another example may include a datagram, information element, packet, frame, segment, PDU, or message as described in or related to any of examples 1–22, or portions or parts thereof, or otherwise described in the present disclosure.
[0146] Another example may include a signal encoded with data as described in or related to any of examples 1–22, or portions or parts thereof, or otherwise described in the present disclosure.
[0147] Another example may include a signal encoded with a datagram, IE, packet, frame, segment, PDU, or message as described in or related to any of examples 1–22, or portions or parts thereof, or otherwise described in the present disclosure.
[0148] Another example may include an electromagnetic signal carrying computer-readable instructions, wherein execution of the computer-readable instructions by one or more processors is to cause the one or more processors to perform the method, techniques, or process as described in or related to any of examples 1–22, or portions thereof.
[0149] Another example may include a computer program comprising instructions, wherein execution of the program by a processing element is to cause the processing element to carry out the method, techniques, or process as described in or related to any of examples 1–22, or portions thereof.
[0150] Another example may include a signal in a wireless network as shown and described herein.
[0151] Another example may include a method of communicating in a wireless network as shown and described herein.
[0152] Another example may include a system for providing wireless communication as shown and described herein.
[0153] Another example may include a device for providing wireless communication as shown and described herein.
[0154] Any of the above-described examples may be combined with any other example (or combination of examples) , unless explicitly stated otherwise. The foregoing description of one or more implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of embodiments to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of various embodiments.
[0155] Although the embodiments above have been described in considerable detail, numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the following claims be interpreted to embrace all such variations and modifications.
Claims
1.A method comprising:receiving layer 1 or layer 2 triggered mobility (LTM) configuration information that configures a plurality of LTM events;determining, based on first beam information, thata first LTM event of the plurality of LTM events is triggered;identifying uplink resources;determining second beam information associated with the first LTM event; anddetermining whether to generate a report, for transmission using the uplink resources, for the first LTM event based on the second beam information.2.The method of claim 1, wherein identifying uplink resources comprises:identifying the uplink resources in a physical uplink shared channel (PUSCH) resource scheduled before said determining that the first LTM event is triggered; orgenerating, based on said determining the first LTM event is triggered, an LTM measurement report (MR) scheduling request (SR) for transmission to a network and receiving an uplink grant corresponding to the MR SR, the uplink grant to indicate the uplink resources.3.The method of claim 2, wherein the LTM MR SR is applicable to a plurality of LTM events or is dedicated to the first LTM event.4.The method of claim 1, further comprising:determining, based on the second beam information, the first LTM event is no longer triggered; anddetermining not to generate the report based on said determining the first LTM event is no longer triggered.5.The method of claim 1, further comprising:determining, based on the second beam information, the first LTM event is still triggered;determining to generate the report based on said determining the first LTM event is still triggered;assembling an LTM MR media access control (MAC) control element (CE) to include at least a portion of the second beam information; andgenerating the report to include the LTM MR MAC CE for transmission to anetwork.6.The method of claim 5, further comprising:determininga plurality of LTM events are triggered; andgenerating a plurality of LTM MR MAC CEs to respectively include beam information associated with the plurality of LTM events.7.The method of claim 6, further comprising:determining a priority order associated with the plurality of LTM MR MAC CEs; andgenerating the report to include a subset of the plurality of LTM MR MAC CEs based on the priority order.8.The method of claim 7, wherein the priority order indicates a first entering report is associated with a highest priority, a leaving condition is associated with a second highest priority, and a periodic report is associated with a third highest priority.9.The method of claim 7, wherein the priority order indicates a plurality of event types are associated with a priority higher than LTM event #2, wherein the plurality of event types include LTM event #3, LTM event #4, and LTM event #5.10.The method of claim 5, wherein the portion of the second beam information includes information corresponding to a plurality of beams that satisfy criteria of the first LTM event.11.The method of claim 5, wherein the portion of the second beam information includes information corresponding to at least one beam that satisfies criteria of the first LTM event and information corresponding to one or more beams that do not satisfy the criteria of the first LTM event.12.The method of claim 5, further comprising:determining, based on the LTM configuration, one or more parameters to limit information that is to be included in the LTM MR MAC CE, wherein the one or more parameters includes: a maximum number of beams that do not satisfy criteria of an associated event; a minimum measurement result threshold; a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria; or a total number of beams inclusive of beams that satisfy criteria of an associated event and beams that do not satisfy the criteria per candidate cell or per resource set.13.The method of claim 5, wherein the portion of the second beam information includes information corresponding to a current serving beam.14.The method of claim 5, wherein the portion is a first portion and the method further comprises:determining the uplink resources do not accommodate all of the second beam information; andselecting, based on a said determining the uplink resources do not accommodate all of the second beam information, a second portion of the second beam information to not include in the LTM MR MAC CE.15.The method of claim 14, further comprising:determining importance levels associated with report content, wherein the importance levels set first report content associated with beams satisfying criteriaof the first LTM event with a first level, second report content associated with a current serving beam with a second level, and third report content associated with beams not satisfying the criteria with a third level, wherein the first level is greater than the second level and the second level is greater than the first level; andselecting the first portion to be included in the LTM MR MAC CE and the second portion that is not to be included in the LTM MR MAC CE based on the importance levels.16.The method of claim 14, wherein the first portion includes reference signal identifiers associated with beams satisfying criteria of the first LTM event and the second portion includes measurement results corresponding to the beams satisfying the criteria.17.The method of claim 5, wherein the report is a first report and the method further comprises:outputting the first report for transmission to the network;starting a timer based on said outputting the first report; andoutputting a second report while the timer is running as a low-priority transmission.18.The method of claim 5, wherein the report is a first report and the method further comprises:outputting the first report for transmission to the network;starting a timer based on said outputting the first report; andpreventing output of a second report while timer is running.19.The method of claim 18, wherein the timer is to prevent output of subsequent reports corresponding to any LTM event, or is to prevent output of subsequent reports associated specifically with the first LTM event.20.The method of claim 1, further comprising:determining uplink resources have extra capacity; andgenerating a padding LTM measurement report (MR) media access control (MAC) control element (CE) that includes an indication of a measurement report associated with a current serving beam, or a measurement report associated with a candidate cell based on the LTM configuration information.21.A method comprising:generating layer 1 or layer 2 triggered mobility (LTM) configuration information that configures a plurality of LTM events and one or more parameters to limit information that is to be included in a LTM measurement report (MR) media access control (MAC) control element (CE) , wherein the one or more parameters includes: a maximum number of beams that do not satisfy criteria of an associated LTM event; a minimum measurement result threshold; or a total number of beams inclusive of beams that satisfy criteria of an associated LTM event and beams that do not satisfy the criteria; andgenerating one or more messages to include the LTM configuration information for transmission to a user equipment (UE) .22.The method of claim 21, further comprising:receiving, from the UE, an LTM measurement report (MR) scheduling request (SR) ; andgenerating, for transmission to the UE, an uplink grant to provide an indication of uplink resources; andreceiving the LTM MR MAC CE in the uplink resources.