Controlled terminal initiated beam management

Abstract

There are provided measures for controlled terminal initiated beam management. These measures exemplarily comprise: receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams; receiving at least one beam report trigger condition from the access network entity; determining, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one of the at least one beam reporting trigger conditions; and sending, to an access network entity, an indication that the at least one candidate beam satisfies the one of the at least one beam report trigger conditions.

Description

Technical Field

[0001] Various example embodiments relate to controlled terminal-initiated beam management. More specifically, various example embodiments exemplarily relate to measures (including methods, apparatuses, and computer program products) for implementing controlled terminal-initiated beam management. Background Art

[0002] This specification generally relates to beam management.

[0003] From Release 15 to Release 18 of the 5th Generation (5G) New Radio (NR), beam management has been specified in three phases controlled by the network: Phase #1 (P1), Phase #2 (P2), and Phase #3 (P3), as Figure 10 shown.

[0004] Figure 10 A schematic diagram showing an example of a system environment with signaling and beam variants is shown, and specifically shows the beam management process according to P1 to P3.

[0005] Within one or more transmission and reception points (TRPs) of a serving cell, the following beam management processes are supported:

[0006] P1 is used to enable UE measurements for different TRP Tx beams to support the selection of TRP Tx beams / UE Rx beams.

[0007] For beamforming at the TRP, it generally includes in-TRP

[0008] / inter-TRP Tx beam scanning from a set of different beams. For beamforming at a user equipment (UE), it generally includes UE Rx beam scanning from a set of different beams. The UE can sequentially scan its antennas / panels for each SS burst and take an average over, for example, three samples.

[0009] P2 is used to enable UE measurements for different TRP Tx beams to potentially change the in-TRP / inter-TRP (s) Tx beams.

[0010] P2 starts from a set of beams that may be smaller than P1 for beam refinement. P2 can be a special case of P1. P2 can use a channel state indication (CSI) beam that is narrower than the synchronization signal block (SSB) beam.

[0011] P3 is used to enable UE measurements on the same TRP Tx beam to change the UE Rx beam when the UE uses beamforming (e.g., the millimeter wave (mmW) array on a UE for FR2 operation). P3 typically uses aperiodic CSI-RS, where the "repetition" is marked as "ON" and the UE L1-RSRP / SINR reporting is disabled.

[0012] Figure 11 is a table that specifies the parameters for CSI reporting and specifically reflects the table on CSI reporting from the 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 38.214.

[0013] Accordingly, "CSI-ResourceConfig" specifies what type of reference signal to send (nzp-CSI-RS-SSB, csi-IM-Resource). "CSI-ResourceConfig" also configures the type of transmission (periodic, aperiodic, semi-persistent). The parameter "reportConfigType" indicates the scheduling method of the report, which can be periodic, aperiodic, and semi-persistent, as Figure 11 shown in the table.

[0014] Rel-16 supports multi-TRP (mTRP) operation, which schedules the Physical Downlink Shared Channel (PDSCH) on two beams from two TRPs simultaneously.

[0015] Rel-18 is addressing the indication of two Transmission Configuration Indicator (TCI) states simultaneously in the unified TCI framework.

[0016] In the scope prepared for Rel-19, some use cases in which the UE can benefit from initiating beam reporting and / or handover are being identified.

[0017] The UE-initiated TCI state / beam reporting / handover feature refers to the situation where the UE can be configured with at least one event / condition, and then if the at least one event / condition occurs or is satisfied, the UE can initiate TCI state / beam reporting / handover.

[0018] In most cases, the benefits are regarding the latency of CSI L1-RSRP / L1-SINR reporting and the overhead of this reporting.

[0019] When compared with periodic beam reporting (with increased periodicity), the obvious advantage of UE-initiated beam reporting, among other advantages, is that the latency between reports may be shorter for some time to avoid, for example, failures, and the reports are sent only when needed, thus reducing the total system overhead.

[0020] Implementations, e.g., signaling / mechanisms for facilitating UE-initiated beam management procedures (including UE-initiated beam reporting / handover), will be provided to reduce overhead / delay through UE-initiated / event-driven beam management as part of beam management enhancements.

[0021] That is, one aspect to be addressed is that not all beams have the same weight / importance.

[0022] Figure 13 A schematic diagram showing an example of a system environment with beam variants is shown, and specifically, a single downlink control information (sDCI) mTRP scenario is shown.

[0023] As an example, in the sDCI mTRP scenario (i.e., Figure 13 the scenario shown), there is one beam / TCI state associated with the first TRP that transmits control information / downlink control information (DCI), and another beam / TCI associated with the second TRP that does not transmit control information / DCI but only transmits data information.

[0024] The beam / TCI state associated with the first TRP that transmits control information / DCI carries the PDCCH associated with both the common and user-specific search space sets. This beam / TCI state also transmits beam switching commands. This beam / TCI state also schedules the PDSCH, physical uplink shared channel (PUSCH), channel state indication reference signal (CSI-RS), and sounding reference signal (SRS) for both TRPs.

[0025] The beam / TCI associated with the second TRP that does not transmit control information / DCI only carries the PDSCH. This beam / TCI state also has the purpose of increasing the achieved throughput. This beam / TCI state can also be used for beam failure declaration.

[0026] On the one hand, in view of its attendant advantages, it may be intended / desired / hoped that the UE (as an example of a terminal) performs UE-initiated beam reporting / handover in order to reduce overhead or avoid beam failure in certain cases.

[0027] However, on the other hand, it may be intended / desired / hoped that the network still controls the entire beam management process.

[0028] Therefore, the following problem arises: measures need to be taken that allow for flexible control and implementation of terminal-initiated beam reporting, and in particular allow for the definition and consideration of boundaries / frameworks for such terminal-initiated beam reporting.

[0029] Therefore, it is necessary to provide for controlled terminal-initiated beam management. Summary of the Invention

[0030] The various example embodiments are intended to address at least some of the above-mentioned issues and / or problems and disadvantages.

[0031] Aspects of the example embodiments are set forth in the appended claims.

[0032] According to an exemplary aspect, there is provided an apparatus including: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least perform: receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams; receiving, from the access network entity, at least one beam report trigger condition; determining, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one of the at least one beam report trigger conditions; and sending an indication to the access network entity that the at least one candidate beam satisfies the one of the at least one beam report trigger conditions.

[0033] According to an exemplary aspect, there is provided an apparatus including: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least perform: sending, to a terminal, information for selecting a candidate beam from a plurality of beams; sending, to the terminal, at least one beam report trigger condition; and receiving, from the terminal, an indication that the at least one candidate beam satisfies one of the at least one beam report trigger conditions.

[0034] According to an exemplary aspect, there is provided an apparatus including: a receiving circuitry configured to receive, from an access network entity, information for selecting a candidate beam from a plurality of beams and at least one beam report trigger condition; a determining circuitry configured to determine, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one of the at least one beam report trigger conditions; and a sending circuitry configured to send an indication to the access network entity that the at least one candidate beam satisfies the one of the at least one beam report trigger conditions.

[0035] According to an exemplary aspect, there is provided an apparatus including: a sending circuitry configured to send, to a terminal, information for selecting a candidate beam from a plurality of beams and at least one beam report trigger condition; and a receiving circuitry configured to receive, from the terminal, an indication that the at least one candidate beam satisfies one of the at least one beam report trigger conditions.

[0036] According to an exemplary aspect, a method is provided, including: receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams; receiving, from the access network entity, at least one beam reporting trigger condition; determining, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one beam reporting trigger condition of the at least one beam reporting trigger condition; and sending an indication to the access network entity that the at least one candidate beam satisfies the one beam reporting trigger condition of the at least one beam reporting trigger condition.

[0037] According to an exemplary aspect, a method is provided, including: sending, to a terminal, information for selecting a candidate beam from a plurality of beams; sending, to the terminal, at least one beam reporting trigger condition; and receiving, from the terminal, an indication that at least one candidate beam satisfies one beam reporting trigger condition of the at least one beam reporting trigger condition.

[0038] According to an exemplary aspect, a computer program product is provided, including executable computer program code that, when the program runs on a computer (e.g., a computer of any of the devices according to the foregoing exemplary aspects related to the devices of the present disclosure), is configured to cause the computer to execute any of the methods according to the foregoing exemplary aspects related to the methods of the present disclosure.

[0039] Such a computer program product may include (or be embodied as) a (tangible) computer-readable (storage) medium, etc., on which computer-executable computer program code that can be directly loaded into the internal memory or the processor of the computer, and / or a program, is stored.

[0040] Any of the foregoing aspects realizes efficient control and implementation of terminal-initiated beam reporting, thereby solving at least a part of the problems and disadvantages identified with respect to the prior art.

[0041] By way of example embodiments, controlled terminal-initiated beam management is provided. More specifically, by way of example embodiments, measures and mechanisms for implementing controlled terminal-initiated beam management are provided.

[0042] Therefore, improved controlled terminal-initiated beam management is enabled / realized through a method, a device, and a computer program product. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Hereinafter, the present disclosure will be described in more detail by way of non-limiting examples with reference to the accompanying drawings, in which:

[0044] Figure 1 is a block diagram showing a device according to an example embodiment;

[0045] Figure 2is a block diagram showing an apparatus according to an exemplary embodiment;

[0046] Figure 3 is a block diagram showing an apparatus according to an exemplary embodiment;

[0047] Figure 4 is a block diagram showing an apparatus according to an exemplary embodiment;

[0048] Figure 5 is a block diagram showing an apparatus according to an exemplary embodiment;

[0049] Figure 6 is a block diagram showing an apparatus according to an exemplary embodiment;

[0050] Figure 7 is a schematic diagram of a process according to an exemplary embodiment;

[0051] Figure 8 is a schematic diagram of a process according to an exemplary embodiment;

[0052] Figure 9 is a schematic diagram of a process according to an exemplary embodiment;

[0053] Figure 10 is a schematic diagram showing an example of a system environment with signaling and beam variants;

[0054] Figure 11 is a table specifying parameters for CSI reporting;

[0055] Figure 12 is a schematic diagram showing an example of a system environment with beam variants;

[0056] Figure 13 is a schematic diagram of a process according to an exemplary embodiment;

[0057] Figure 14 is a schematic diagram showing an example of a system environment with beam variants according to an exemplary embodiment;

[0058] Figure 15 is a schematic diagram showing an example of a system environment with beam variants according to an exemplary embodiment; and

[0059] Figure 16 is alternatively a block diagram showing an apparatus according to an exemplary embodiment. DETAILED DESCRIPTION

[0060] The present disclosure is described herein by reference to specific non - limiting examples and presently contemplated embodiments. Those skilled in the art will appreciate that the present disclosure is in no way limited to these examples and can be applied more broadly.

[0061] Note that the following description of the present disclosure and its embodiments mainly refers to specifications that are used as non - limiting examples for certain exemplary network configurations and deployments. That is, the present disclosure and its embodiments are mainly described with respect to 3GPP specifications that are used as non - limiting examples for certain exemplary network configurations and deployments. Therefore, the description of the exemplary embodiments given herein specifically refers to the terms directly related thereto. These terms are used only in the context of the non - limiting examples given and, of course, do not limit the present disclosure in any way. On the contrary, any other communication or communication - related system deployment, etc., can also be utilized as long as it conforms to the features described herein.

[0062] In the following, various embodiments and implementations of the present disclosure and its aspects or embodiments are described using several variations and / or alternatives. Generally, it should be noted that all the described variations and / or alternatives can be provided individually or in any conceivable combination (including combinations of the individual features of the various variations and / or alternatives) according to certain needs and constraints.

[0063] As used herein, “at least one of the following: <list of two or more elements>” and “at least one of <list of two or more elements>” and similar phrases, where the list of two or more elements is joined by “and” or “or”, means at least any one of the elements, or at least any two or more of the elements, or at least all of the elements.

[0064] According to an exemplary embodiment, generally, measures and mechanisms for (enabling / implementing) controlled terminal - initiated beam management are provided.

[0065] As described above, from Rel - 15 to Rel - 18 of the 5th generation (5G) New Radio (NR), beam management has been specified in three phases controlled by the network: Phase #1 (P1), Phase #2 (P2), and Phase #3 (P3), as Figure 10 shown. The exemplary embodiments mainly focus on reporting for P2. However, it should be noted that these can be modified to also apply to P1 and / or P3.

[0066] A general framework can be assumed as follows, where the network configures conditions for the UE to monitor for beams / TCI states / RSs such that when the conditions are met, UE - initiated beam reporting / handover is triggered.

[0067] The condition can include a change in the best TCI (which can be DL only, UL only, both DL and UL, or a combination of DL and UL), beam, or beam pair / group based on the RSRP (or other similar metric) for certain TRPs.

[0068] As described above, on the one hand, given its attendant advantages, it may be intended / desired / hoped that the UE (as an example of a terminal) perform UE-initiated beam reporting / handover in order to reduce overhead or avoid beam failure in certain cases, while on the other hand, it may be intended / desired / hoped that the network still control the entire beam management process.

[0069] The example embodiment starts with configuring some restrictions for the UE, which may be useful / helpful for both the network (to have more control over beam handover / reporting) and the UE (to limit the possibility space of the UE and thus simplify its implementation), making UE-initiated beam reporting / handover applicable only to certain beams / TCI states with specific weights / importance.

[0070] Thus, in short, according to the example embodiment, a network configuration is provided to indicate to the UE which reference signals (representing beams / TCI states) can be candidates for UE-initiated beam reporting / handover and / or which reference signals (beams / TCI states) cannot be candidates for UE-initiated beam reporting / handover.

[0071] The restricted candidate reference signals (beams / TCI states) that allow UE-initiated beam reporting / handover depend on the weight / importance of such RS (beams / TCI states).

[0072] According to the example embodiment (e.g., the first alternative), the RS that addresses only the TCI state of the control channel or the shared channel is (or is considered to be) a candidate.

[0073] According to another example embodiment (e.g., the second alternative), the RS of only the TCI state associated with the lowest, highest, or specific timing advance group (TAG) ID is (or is considered to be) a candidate.

[0074] According to another example embodiment (e.g., the third alternative), the RS of only the TCI state for which the UE reaches a threshold fraction / percentage (in the samples not received) of triggering BFR is (or is considered to be) a candidate.

[0075] Therefore, implementing the example embodiment enables the network to control the candidate beams for UE-initiated beam reporting / handover by restricting the UE possibilities (i.e., UE search). Additionally, due to the limited number of UE reports and triggers, implementing the example embodiment reduces the complexity and power consumption at the UE.

[0076] The example embodiment is specified in more detail below.

[0077] Figure 1FIG. 0 is a block diagram showing a device according to an exemplary embodiment. The device may be a terminal 10 such as a user equipment, including a receiving circuit system 11, a determining circuit system 12, and a transmitting circuit system 13. The receiving circuit system 11 receives information for selecting a candidate beam from a plurality of beams from an access network entity. The receiving circuit system 11 (or an additional receiving circuit system) receives at least one beam report trigger condition from the access network entity. The determining circuit system 12 determines that at least one candidate beam satisfies one beam report trigger condition among the at least one beam report trigger conditions based on the information for selecting the candidate beam from the plurality of beams. The transmitting circuit system 13 transmits an indication that the at least one candidate beam satisfies the one beam report trigger condition among the at least one beam report trigger conditions to the access network entity. Figure 7 FIG. 1 is a schematic diagram of a process according to an exemplary embodiment. According to Figure 1 the device of Figure 7 may perform Figure 7 the method of Figure 1 but is not limited to this method.

[0078] As Figure 7 shown, the process according to an exemplary embodiment includes the following operations: an operation of receiving (S71) information for selecting a candidate beam from a plurality of beams from an access network entity; an operation of receiving (S72) at least one beam report trigger condition from the access network entity; an operation of determining (S73) that at least one candidate beam satisfies one beam report trigger condition among the at least one beam report trigger conditions based on the information for selecting the candidate beam from the plurality of beams; and an operation of transmitting (S74) an indication that the at least one candidate beam satisfies the one beam report trigger condition among the at least one beam report trigger conditions to the access network entity.

[0079] Figure 2 FIG. 2 is a block diagram showing a device according to an exemplary embodiment. Specifically, Figure 2 shows Figure 1 a variant of the device shown in Figure 2 . Thus, the device according to

[0080] In an embodiment, Figure 1 (or Figure 2 ) at least some functions of the device shown in may be shared between two physically separated devices forming one operating entity. Thus, it can be seen that the device depicts an operating entity including one or more physically separated devices for performing at least some of the processes described.

[0081] As described above, the apparatus 10 may be a terminal such as a user equipment. Although not shown in Figure 1 or Figure 2 , the terminal may include at least one memory, at least one processor, at least one display, at least one battery, at least one antenna, at least one baseband circuitry, or at least one transceiver, or any combination thereof. In particular, the terminal may include at least one antenna.

[0082] Furthermore, although the circuitry (e.g., the receiving circuitry 11, the determining circuitry 12, the transmitting circuitry 13) mentioned and shown in Figure 1 and Figure 2 may be separately provided in hardware components, these circuitries may also be provided as software components or as a combination of hardware components and software components.

[0083] According to a further example embodiment, each respective beam of the plurality of beams is associated with a respective reference signal.

[0084] According to a further example embodiment, the information for selecting a candidate beam from the plurality of beams includes at least one of the following: a beam having a transmission configuration indication state associated with at least one control channel, a beam having a transmission configuration indication state not associated with at least one control channel, or a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0085] According to a further example embodiment, the at least one beam reporting trigger condition includes at least one of the following: the number of beam failure events is lower than a beam failure event threshold, or the number of beam failure events is higher than a beam failure event threshold.

[0086] According to a further example embodiment, the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0087] According to Figure 7 , a variant of the process shown, exemplary details of the determining operation (S73) are given, which are independent of each other. Such an exemplary determining operation (S73) according to an example embodiment may include an operation of monitoring the plurality of beams for the beam failure event, and an operation of counting the number of the beam failure events for each beam of the plurality of beams.

[0088] According to another exemplary embodiment, the at least one beam reporting trigger condition includes at least one of the following: a power value of a received reference signal being higher than a reference signal reception power threshold, the power value of the received reference signal being lower than the reference signal reception power threshold, a signal-to-interference-and-noise ratio being higher than a signal-to-interference-and-noise ratio threshold, the signal-to-interference-and-noise ratio being lower than the signal-to-interference-and-noise ratio threshold, a channel quality indicator value being higher than a channel quality indicator threshold, or the channel quality indicator value being lower than the channel quality indicator threshold.

[0089] According to Figure 7 a variant of the process shown in, exemplary additional operations are given, which are independent of each other. According to such a variant, the exemplary method according to the exemplary embodiment may include an operation of sending an indication of a beam report triggered by an expected frequent terminal to the access network entity.

[0090] Figure 3 is a block diagram showing a device according to an exemplary embodiment. The device may be an access node or entity 30 such as a base station or a TRP, and includes a transmission circuit system 31 and a reception circuit system 32. The transmission circuit system 31 sends information for selecting candidate beams from a plurality of beams to a terminal. The transmission circuit system 31 (or an additional transmission circuit system) sends at least one beam reporting trigger condition to the terminal. The reception circuit system 32 receives an indication that at least one of the candidate beams satisfies one of the at least one beam reporting trigger conditions from the terminal. Figure 8 is a schematic diagram of a process according to an exemplary embodiment. According to Figure 3 the device of Figure 8 may execute the Figure 8 method of Figure 3 but is not limited to this method.

[0091] As Figure 8 shown, the process according to the exemplary embodiment includes the following operations: an operation of sending (S81) information for selecting candidate beams from a plurality of beams to a terminal; an operation of sending (S82) at least one beam reporting trigger condition to the terminal; and an operation of receiving (S83) an indication that at least one of the candidate beams satisfies one of the at least one beam reporting trigger conditions from the terminal.

[0092] Figure 4 is a block diagram showing a device according to an exemplary embodiment. Specifically, Figure 4 shows Figure 3 a variant of the device shown in. Thus, according to Figure 4 the device of

[0093] In an embodiment, Figure 3 (or Figure 4 ) at least some of the functions of the apparatus shown may be shared between two physically separate devices that form an operating entity. Thus, it can be seen that the apparatus depicts an operating entity that includes one or more physically separate devices for performing at least some of the described processes.

[0094] Although the circuitry (e.g., the transmit circuitry 31, the receive circuitry 32) mentioned and shown in Figure 3 and Figure 4 may be separately provided in hardware components, these circuitries may also be provided as software components or as a combination of hardware components and software components.

[0095] According to a further example embodiment, each respective beam of the plurality of beams is associated with a respective reference signal.

[0096] According to a further example embodiment, the information for selecting a candidate beam from the plurality of beams includes at least one of the following: a beam having a transmission configuration indication state associated with at least one control channel, a beam having a transmission configuration indication state not associated with at least one control channel, or a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0097] According to a further example embodiment, the at least one beam reporting trigger condition includes at least one of the following: the number of beam failure events is lower than a beam failure event threshold, or the number of beam failure events is higher than a beam failure event threshold.

[0098] According to a further example embodiment, the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0099] According to a further exemplary embodiment, the at least one beam reporting trigger condition includes at least one of the following: the power value of the received reference signal is higher than a reference signal received power threshold, the power value of the received reference signal is lower than the reference signal received power threshold, the signal-to-interference-and-noise ratio is higher than a signal-to-interference-and-noise ratio threshold, the signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold, the channel quality indicator value is higher than a channel quality indicator threshold, or the channel quality indicator value is lower than the channel quality indicator threshold.

[0100] According to Figure 8Variants of the process shown in the figure give exemplary additional operations that are independent of each other. According to such a variant, the exemplary method according to the example embodiment may include an operation of receiving an indication of an expected frequent terminal-triggered beam report from the terminal, and an operation of configuring a beam report type to consider the indication of the expected frequent terminal-triggered beam report.

[0101] Figure 5 is a block diagram showing a device according to an example embodiment. The device may be a terminal 50 such as a user equipment, including a receiving circuit system 51, a selection circuit system 52, an evaluation circuit system 53, a determination circuit system 54, and a transmission circuit system 55. The receiving circuit system 51 receives information for selecting candidate beams from the multiple beams from the access network entity. The receiving circuit system 51 (or an additional receiving circuit system) receives at least one beam report trigger condition from the access network entity. The selection circuit system 52 selects a preferred beam from the multiple beams based on terminal-side optimization parameters. The evaluation circuit system 53 evaluates whether to select at least one of the preferred beams based on the information for selecting candidate beams. The determination circuit system 54 determines that at least one preferred beam selected based on the information for selecting candidate beams satisfies one of the at least one beam report trigger conditions. The transmission circuit system 55 transmits an indication to the access network entity, and the indication is that at least one preferred beam selected based on the information for selecting candidate beams satisfies the one beam report trigger condition among the at least one beam report trigger conditions. Figure 9 is a schematic diagram of a process according to an example embodiment. According to Figure 5 the device of Figure 9 may execute Figure 9 the method of Figure 5 but is not limited to this method.

[0102] As Figure 9As shown, the process according to the exemplary embodiment includes the following operations: an operation of receiving (S91) information for selecting a candidate beam from a plurality of beams from an access network entity; receiving (S92) at least one beam reporting trigger condition from the access network entity; an operation of selecting (S93) a preferred beam from the plurality of beams based on terminal-side optimization parameters; an operation of evaluating (S94) whether to select at least one of the preferred beams based on the information for selecting the candidate beam; determining (S95) that at least one of the preferred beams selected based on the information for selecting the candidate beam satisfies one of the at least one beam reporting trigger conditions; and sending (S96) an indication to the access network entity, the indication being that at least one of the preferred beams selected based on the information for selecting the candidate beam satisfies the one of the at least one beam reporting trigger conditions.

[0103] Figure 6 is a block diagram showing a device according to an exemplary embodiment. Specifically, Figure 6 shows Figure 5 a variant of the device shown. Thus, according to Figure 6 the device may further include a consideration circuit system 61, an inspection circuit system 62, a modification circuit system 63, a decision circuit system 64, a monitoring circuit system 65, and / or a counting circuit system 66.

[0104] In an embodiment, Figure 5 (or Figure 6 ) at least some of the functions of the device shown may be shared between two physically separated devices forming one operating entity. Thus, it can be seen that the device depicts an operating entity including one or more physically separated devices for performing at least some of the described processes.

[0105] As described above, the device 50 may be a terminal such as a user equipment. Although not shown in Figure 5 or Figure 6 , the terminal may include at least one memory, at least one processor, at least one display, at least one battery, at least one antenna, at least one baseband circuit system, or at least one transceiver, or any combination thereof. The terminal may in particular include at least one antenna.

[0106] Furthermore, although the circuit systems (e.g., the receiving circuit system 51, the selecting circuit system 52, the evaluating circuit system 53, the determining circuit system 54, the sending circuit system 55) mentioned and shown in Figure 5 and Figure 6 may be separately provided in hardware components, these circuit systems may also be provided as software components or as a combination of hardware components and software components.

[0107] According to Figure 9 a variant of the process shown in, exemplary additional operations are given, which are independent of each other. According to such a variant, the exemplary method according to the exemplary embodiment may include an operation of determining the terminal-side optimization parameter. Here, the terminal-side optimization parameter includes at least one of the following: link budget, or reliability, or terminal power consumption.

[0108] According to Figure 9 a variant of the process shown in, exemplary additional operations and exemplary details of the evaluation operation (S94) are given, which are independent of each other. According to this variant, the terminal-side optimization parameter is the terminal power consumption, and the exemplary method according to the exemplary embodiment may include an operation of selecting a power mode based on the terminal-side optimization parameter, where the power mode defines the number of antenna panels to be activated. In addition, such an exemplary evaluation operation (S94) according to the exemplary embodiment may include an operation of only considering beams that do not increase the number of activated antenna panels.

[0109] According to Figure 9 a variant of the process shown in, exemplary additional operations and exemplary details of the evaluation operation (S94) are given, which are independent of each other. According to this variant, the terminal-side optimization parameter is the terminal power consumption, and the exemplary method according to the exemplary embodiment may include an operation of selecting a power mode based on the terminal-side optimization parameter, where the power mode defines the number of antenna panels to be activated. In addition, such an exemplary evaluation operation (S94) according to the exemplary embodiment may include an operation of only considering beams where the number of activated antenna panels is equal to or less than the threshold of activated antenna panels.

[0110] According to Figure 9 a variant of the process shown in, exemplary details of the evaluation operation (S94) are given, which are independent of each other. Such an exemplary evaluation operation (S94) according to the exemplary embodiment may include: an operation of checking whether a preferred beam that will not be selected based on the information for selecting candidate beams must be selected based on the information for selecting candidate beams with a modified beam reporting setting; an operation of modifying the beam reporting setting for the preferred beam; and an operation of determining that the preferred beam will be selected based on the information for selecting candidate beams.

[0111] According to another exemplary embodiment, each respective beam among the plurality of beams is associated with a respective reference signal.

[0112] According to another exemplary embodiment, the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state associated with at least one control channel.

[0113] According to a further example embodiment, the information for selecting a candidate beam from the plurality of beams designates a beam having a transmission configuration indication state not associated with at least one control channel.

[0114] According to a further example embodiment, the information for selecting a candidate beam from a plurality of beams designates a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0115] According to a further example embodiment, the information for selecting a candidate beam from a plurality of beams designates a beam for which the number of beam failure events satisfies a beam failure event threshold condition.

[0116] According to a further example embodiment, if the number of beam failure events is higher than a beam failure event threshold, the beam failure event threshold condition is satisfied.

[0117] According to a further example embodiment, if the number of beam failure events is lower than the beam failure event threshold, the beam failure event threshold condition is satisfied.

[0118] According to a further example embodiment, the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0119] According to Figure 9 Variants of the process shown in, exemplary details of the selection operation (S93, selecting the preferred beam from the plurality of beams based on the terminal-side optimization parameters) are given, which are independent of each other. Such an exemplary selection operation (S93, selecting the preferred beam from the plurality of beams based on the terminal-side optimization parameters) according to an example embodiment may include: an operation of monitoring the plurality of beams with respect to the beam failure event; and an operation of counting the number of beam failure events for each beam of the plurality of beams.

[0120] The example embodiments outlined and specified above are explained in more specific terms below.

[0121] According to an example embodiment (e.g., substantially in accordance with the first alternative), in the sDCI mTRP scenario, the network configures the UE via RRC such that there is no UE-initiated beam switching for the TCI carrying the PDCCH.

[0122] Following this approach, the network's preference for maintaining more control over the TCI carrying the control information can be satisfied because the control information is considered more important.

[0123] Alternatively, according to an example embodiment (e.g., substantially in line with the first alternative), in the sDCI mTRP scenario, the network configures the UE via, for example, RRC such that UE-initiated beam switching can exist only for the TCI carrying the PDCCH.

[0124] Following this approach, the network allows the UE to trigger switching precisely only when the preference for the TCI carrying the DCI is met, as it is more important than the second TCI not carrying the DCI.

[0125] Figure 13 is a schematic diagram of a process according to an example embodiment and specifically shows the method applied to sDCI mTRP, where the network configures the UE for UE-initiated beam reporting / switching for the TCI state carrying the PDDCH.

[0126] In Figure 13 the first step of, according to an example embodiment, the UE is initially configured to receive DL from two TRPs in the sDCI mTRP scenario.

[0127] In Figure 13 the second step of, according to an example embodiment, the UE receives, for example via RRC, configuration settings as the UE-initiated beam reporting "condition", which is the fact that the beam has an L1-RSRP below a certain threshold.

[0128] The value at which the threshold is set is a network implementation. For example, the network can set the threshold to a rather low value such that if the L1-RSRP drops below this value, the reliability of the beam becomes too low for carrying the PDCCH.

[0129] While in Figure 13 the example embodiment is explained with reference to the L1-RSRP and specifically the condition for UE-initiated beam reporting is the fact that the beam has an L1-RSRP below a specific threshold, this condition is not restrictive.

[0130] That is, according to an example embodiment, other metrics and different types of thresholds can be used.

[0131] For example, as an alternative to the L1-RSRP, the L1-SINR can also be used as a metric. Additionally, the UE can be configured to perform UE-initiated beam reporting when the metric is "above" or "below" the threshold.

[0132] For example, in the case of the L1-SINR

[0133] - Setting a) a low value for the threshold, e.g., 0 dB; and b) the L1 - SINR "below" this threshold as a condition to trigger beam reporting initiated by the UE can help the network side understand that the reliability of the beam has become particularly poor; and

[0134] - On the other hand, setting a) a high value for the threshold (e.g., 20 dB); and b) the L1 - SINR "above" this threshold as a condition to trigger beam reporting initiated by the UE can help the network side understand that the reliability of the beam has become particularly good.

[0135] According to an example embodiment, in addition, the UE receives configuration via RRC, for example, such that UE - initiated beam reporting is only allowed for the beam carrying the PDCCH.

[0136] In Figure 13 the third step, according to an example embodiment, the UE monitors the L1 - RSRP for the beam carrying the PDCCH.

[0137] In Figure 13 the fourth step, if the "condition" is met, i.e., the L1 - RSRP of such a beam is below the threshold, then according to an example embodiment, the UE notifies the network of this situation in Figure 13 the fifth step.

[0138] On the other hand, if the "condition" is not met in Figure 13 the fourth step, i.e., the L1 - RSRP of such a beam is not below the threshold, then according to an example embodiment, the UE returns to Figure 13 the third step to further monitor the L1 - RSRP for the beam carrying the PDCCH.

[0139] An example embodiment that is substantially consistent with the first alternative can optionally be implemented as follows.

[0140] That is, generally, according to such a specific implementation, at the UE, it can be decided which parameter to optimize, such as link budget, reliability, or UE power consumption. It can be compared whether the preferred gNB beam from the UE's perspective is included in the network configuration for UE - initiated reporting, i.e., the restrictions / constraints on, for example, the beam pool, and based on this comparison, it can be decided whether to send a report to the gNB.

[0141] As a first option of such a specific implementation, the UE aims to maximize the UE Tx power to improve UL performance (link budget and reliability).

[0142] Figure 14 FIG. shows a schematic diagram of an example of a system environment with beam variants according to an example embodiment, and specifically, shows a use case of UE implementation for link budget and reliability.

[0143] Accordingly, the UE can find a preferred beam to report to the network ( Figure 14 "TCI state candidate 1" in

[0144] ), for example, having PUSCH and PUCCH TCI states on different panels, such that higher power can be used.

[0145] Furthermore, the UE then checks whether the gNB (i.e., the network) has sent a dedicated configuration to restrict UE-initiated beam reporting, for example, restricting UE-initiated beam reporting / handover to only the TCI states carrying PUSCH.

[0146] If so, that is, if the gNB (i.e., the network) has sent a dedicated configuration to restrict UE-initiated beam reporting, the UE checks whether the UE-preferred beam is within the allowed beams.

[0147] If so, that is, if the UE-preferred beam is within the allowed beams, the UE sends a report.

[0148] On the other hand, if not, that is, if the UE-preferred beam is not within the allowed beams, for example, because the UE wants to report such a preferred beam for PUCCH, but only the TCI states carrying PUSCH are the allowed beams, the UE checks whether the UE-preferred beam is still a candidate within the restricted framework for, for example, PUSCH.

[0149] If the UE panel for such a preferred beam will be the same for both PUSCH and PUCCH, it is still a candidate for PUSCH as well, and the UE sends a report.

[0150] On the other hand, if the UE panel for such a preferred beam will be different, it is not a candidate, and the UE does not trigger a report.

[0151] If the gNB (i.e., the network) has not sent a dedicated configuration for restricting UE-initiated beam reporting, that is, if there is no restricted configuration regarding the beams for UE-initiated beam reporting that the UE can report, the UE sends a report.

[0152] Figure 15 A schematic diagram showing an example of a system environment with beam variants according to an example embodiment is shown, and specifically, a use case of UE implementation in a second embodiment for optimizing UE power consumption is shown.

[0153] Accordingly, for example, the UE selects a power mode (e.g., power mode 1 = (at most) all panels "on", power mode 2 = (at most) two panels "on", power mode 3 = one panel "on", where the larger the number of panels "on", the more power the UE also consumes).

[0154] If the UE selects power mode 3, the UE measures the preferred beam from only a single UE panel.

[0155] In this case, for any restrictions configured by the network, the UE can always trigger a report (considering the conditional handling shown above).

[0156] If the UE selects power mode 2 or power mode 1, the UE measures the preferred beams from at least two panels.

[0157] In this case, for any restrictions configured by the network, the UE triggers a report only when the preferred beam causes the same number of active UE panels to be maintained or the number of active UE panels to be reduced.

[0158] According to a further example embodiment (e.g., substantially in line with the second alternative), in the sDCI or mDCI mTRP scenario, the network configures, for example, via RRC or MAC-CE, whether UE-initiated beam reporting / handover is allowed / not allowed only for TCI states associated with a specific TAG ID.

[0159] That is, two timing advances (TAs) for uplink (UL) multi-DCI for multi-TRP operation can be foreseen (e.g., in the Rel-18 scenario), and the question is how to handle the case where the transmission timing difference between two TAGs exceeds the maximum transmission timing difference (MTTD) value. This problem can be handled, for example, by stopping one of the two UL transmissions or leaving the problem to the UE implementation.

[0160] If the network has some knowledge about the reception timing difference (RTD) (since, for example, it is sent back by the UE), the network will know which UL transmission associated with a specific TAG (e.g., out of two in the Rel-18 scenario or more than two in 6G, for example) is the main cause of the potential maximum reception timing difference (MRTD) / MTTD conflict, and configure the UE for UE-initiated beam reporting / handover only for the TCI state associated with that specific TAG ID.

[0161] According to a further example embodiment (e.g., substantially in line with the third alternative), to avoid triggering beam failure recovery (BFR) that is expensive for both the UE and the network, the network configures the UE via RRC, for example, to perform UE-initiated beam handover when the UE reaches a fraction / percentage of the threshold for triggering BFR (in the non-received samples).

[0162] For example, the network may configure the UE to initiate beam switching for the UE when the UE reaches 50% (other percentages are possible) of a parameter representing a threshold for triggering a BFR. The parameter may be, for example, "beamFailureInstanceMaxCount" specified in TS38.321.

[0163] This will bring about or at least contribute to avoiding or at least minimizing BFR events.

[0164] According to a further example embodiment, a restricted set of reference signals that may be reported in a UE-initiated report is a subset of the reference signals configured for normal L1-RSRP reporting. The subset may be according to one or more of the foregoing example embodiments.

[0165] According to a further example embodiment, the UE adds additional information to the report discussed above with respect to the foregoing example embodiments, the additional information indicating whether the UE expects more frequent UE-initiated reports. If the UE observes that the measurements of the beam are changing in a rapid manner, this may indicate to the network to set up periodic or semi-persistent reporting.

[0166] The above processes and functions may be implemented by corresponding functional elements, processors, etc., as described below.

[0167] In the foregoing exemplary description of network entities, only the units related to understanding the principles of the present disclosure are described using functional blocks. A network entity may include other units necessary for its corresponding operations. However, the description of these units is omitted in this specification. The arrangement of the functional blocks of the device is not to be construed as limiting the present disclosure, and the functions may be performed by one block or further split into sub-blocks.

[0168] When a device as described in the foregoing description, i.e., a network device (or some other component) is configured to perform a certain function, this is to be interpreted as equivalent to stating that one (i.e., at least one) processor or corresponding circuitry potentially cooperating with computer program code stored in the memory of the corresponding device is configured to cause the device to thus perform at least the above function. Further, such a function should be interpreted as being equivalently implemented by specifically configured circuitry or components for performing the corresponding function (i.e., the expression "unit is configured to" is interpreted as equivalent to an expression such as "component for...").

[0169] In Figure 16 is shown an alternative illustration of a device according to an example embodiment. As Figure 16As shown, according to an example embodiment, the device (network device) 10' (corresponding to the terminal 10) includes a processor 161, a memory 162, and an interface 163 connected via a bus 164 or the like. In addition, according to an example embodiment, the device (network device) 30' (corresponding to the network node / entity 30) includes a processor 161, a memory 162, and an interface 163 connected via a bus 164 or the like. In addition, according to an exemplary embodiment, the device (network device) 50' (corresponding to the terminal 50) includes a processor 161, a memory 162, and an interface 163 connected via a bus 164 or the like. The devices 10', 30', 50' may be connected to another network device 160 via a link 165, for example, any other device among the devices 10', 30', 50'.

[0170] The processor 161 and / or the interface 163 may further include a modem or the like to support communication on the (wired or wireless) link respectively. The interface 163 may include a suitable transceiver coupled to one or more antennas or communication components for (wired or wireless) communication with the (one or more) linked or connected devices respectively. The interface 163 is generally configured to communicate with at least one other device (i.e., its interface).

[0171] The memory 162 may store a corresponding program assumed to include program instructions or computer program code, which, when executed by the corresponding processor, enables the corresponding electronic device or device to operate according to an example embodiment.

[0172] Generally speaking, the corresponding device / device (and / or its part) may represent a component for performing the corresponding operation and / or presenting the corresponding function, and / or the corresponding device (and / or its part) may have a function for performing the corresponding operation and / or presenting the corresponding function.

[0173] When it is stated in the following description that a processor (or some other component) is configured to perform a certain function, this will be interpreted as equivalent to stating that at least one processor potentially cooperating with the computer program code stored in the memory of the corresponding device is configured to cause the device to at least perform the above function. In addition, such a function should be interpreted as equivalently implemented by a specifically configured component for performing the corresponding function (i.e., the expression "the processor is configured to [cause the device to] perform xxx" is interpreted as equivalent to an expression such as "a component for xxx").

[0174] According to an example embodiment, an apparatus representing a terminal 10 includes at least one processor 161, at least one memory 162 including computer program code, and at least one interface 163 configured to communicate with at least another apparatus. The processor (i.e., at least one processor 161, in combination with at least one memory 162 and computer program code) is configured to perform the following operations: receive, from an access network entity, information for selecting a candidate beam from a plurality of beams (and thus the apparatus includes a corresponding component for receiving); receive, from the access network entity, at least one beam reporting trigger condition; determine, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one of the at least one beam reporting trigger conditions (and thus the apparatus includes a corresponding component for determining); and send an indication to the access network entity that the at least one candidate beam satisfies the one of the at least one beam reporting trigger conditions (and thus the apparatus includes a corresponding component for sending).

[0175] According to an example embodiment, an apparatus representing a network node / entity 30 includes at least one processor 161, at least one memory 162 including computer program code, and at least one interface 163 configured to communicate with at least another apparatus. The processor (i.e., at least one processor 161, in combination with at least one memory 162 and computer program code) is configured to perform the following operations: send, to a terminal, information for selecting a candidate beam from a plurality of beams (and thus the apparatus includes a corresponding component for sending), send at least one beam reporting trigger condition to the terminal, and receive, from the terminal, an indication that at least one candidate beam satisfies one of the at least one beam reporting trigger conditions (and thus the apparatus includes a corresponding component for receiving).

[0176] According to an example embodiment, an apparatus representing a terminal 50 includes at least one processor 161, at least one memory 162 including computer program code, and at least one interface 163 configured to communicate with at least another apparatus. The processor (i.e., at least one processor 161, together with at least one memory 162 and the computer program code) is configured to perform the following operations: receive information for selecting a candidate beam from a plurality of beams from an access network entity (thus the apparatus includes corresponding components for receiving); receive at least one beam report trigger condition from the access network entity; select a preferred beam from the plurality of beams based on terminal-side optimization parameters (thus the apparatus includes corresponding components for selecting); evaluate whether to select at least one of the preferred beams based on the information for selecting the candidate beam (thus the apparatus includes corresponding components for evaluating); determine that at least one of the preferred beams selected based on the information for selecting the candidate beam satisfies one of the at least one beam report trigger conditions (thus the apparatus includes corresponding components for determining); and send an indication to the access network entity, the indication being the at least one preferred beam selected based on the information for selecting the candidate beam and satisfying the one of the at least one beam report trigger conditions (thus the apparatus includes corresponding components for sending).

[0177] For further details regarding the operability / functionality of the respective apparatuses, reference is made separately to the descriptions above in conjunction with any one of the appended Figures 1 to 15 drawings.

[0178] For the purposes of the present disclosure as described above, it should be noted that

[0179] - A method step may be implemented as a software code portion and run using a processor at a network server or a network entity (as an example of a device, apparatus, and / or its module, or as an example of an entity including a device and / or a module), independent of the software code, and may be specified using any known or future-developed programming language as long as the function defined by the method step is maintained;

[0180] - Generally, any method step is suitable for being implemented as software or hardware without changing the idea of the embodiment and its modification in terms of the implemented function;

[0181] - Method steps and / or devices, units or components that may be implemented as hardware components at the device defined above, or any of its (multiple) modules (e.g., a device implementing the functions of the device according to the above embodiments) are hardware-independent and can be implemented using any known or future-developed hardware technology or any combination of these, such as MOS (Metal Oxide Semiconductor), CMOS (Complementary MOS), BiMOS (Bipolar MOS), BiCMOS (Bipolar CMOS), ECL (Emitter Coupled Logic), TTL (Transistor-Transistor Logic), etc., which use, for example, ASIC (Application Specific IC) components, FPGA (Field Programmable Gate Array) components, CPLD (Complex Programmable Logic Device) components or DSP (Digital Signal Processor) components;

[0182] - A device, unit or component (e.g., the network entity or network register defined above, or any of their corresponding units / components) can be implemented as a separate device, unit or component, but this does not exclude its implementation in a distributed manner throughout the system, as long as the functionality of the device, unit or component is retained;

[0183] - Devices such as user equipment and network entities / network registrars can be represented by semiconductor chips, chip sets or (hardware) modules including such chips or chip sets; however, this does not exclude the possibility that the functions of the device or module are not hardware-implemented, but are implemented as software in (software) modules, such as a computer program or computer program product including an executable software code portion for execution / run on a processor;

[0184] - A device can be regarded as a combination of a device or more than one device, whether they cooperate with each other functionally or, for example, are in the same device housing but are functionally independent of each other.

[0185] Generally, it should be noted that if only suitable for performing the described functions of the corresponding part, the corresponding functional blocks or elements according to the above aspects can be implemented separately by any known means in hardware and / or software. The mentioned method steps can be implemented in separate functional blocks or by separate devices, or one or more of the method steps can be implemented in a single functional block or a single device.

[0186] Generally, any method step is suitable for being implemented as software or hardware without changing the idea of the present disclosure. Devices and components can be implemented as separate devices, but this does not exclude their implementation in a distributed manner throughout the system, as long as the functions of the devices are retained. Such and similar principles will be considered known to those skilled in the art.

[0187] Software in the sense of this specification includes software code, such as code components, parts, computer programs or computer program products including code for performing corresponding functions, and software (or computer program or computer program product) embodied on a tangible medium such as a computer-readable (storage) medium, where corresponding data structures or code components / parts may be stored on the tangible medium during its processing or embodied in a signal or chip.

[0188] The present disclosure also covers any conceivable combinations of the above method steps and operations, and any conceivable combinations of the above nodes, devices, modules or elements, as long as the above concepts of the method and structural arrangements are applicable.

[0189] In view of the above, measures for controlled terminal-initiated beam management are provided. These measures exemplarily include: receiving information for selecting candidate beams from multiple beams from an access network entity; receiving at least one beam reporting trigger condition from the access network entity; determining that at least one candidate beam satisfies one beam reporting trigger condition among the at least one beam reporting trigger conditions based on the information for selecting candidate beams from the multiple beams; and sending an indication to the access network entity that the at least one candidate beam satisfies the one beam reporting trigger condition among the at least one beam reporting trigger conditions.

[0190] Although the present disclosure has been described above with reference to examples according to the drawings, it should be understood that the present disclosure is not limited thereto. On the contrary, it will be apparent to those skilled in the art that the present disclosure can be modified in various ways without departing from the scope of the inventive concept disclosed herein.

[0191] At least the following example entries are covered by the above:

[0192] Item 1. A device, comprising:

[0193] At least one processor; and

[0194] At least one memory storing instructions that, when executed by the at least one processor, cause the device to at least perform:

[0195] Receiving information for selecting candidate beams from multiple beams from an access network entity;

[0196] Receiving at least one beam reporting trigger condition from the access network entity;

[0197] Determining that at least one candidate beam satisfies one beam reporting trigger condition among the at least one beam reporting trigger conditions based on the information for selecting candidate beams from the multiple beams; and

[0198] Send an indication that the at least one candidate beam satisfies one of the at least one beam report trigger conditions to the access network entity.

[0199] Item 2. The apparatus according to item 1, wherein each respective beam of the plurality of beams is associated with a respective reference signal.

[0200] Item 3. The apparatus according to any one of items 1 to 2, wherein the information for selecting candidate beams from the plurality of beams includes at least one of the following:

[0201] A beam having a transmission configuration indication state associated with at least one control channel,

[0202] A beam having a transmission configuration indication state not associated with at least one control channel,

[0203] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0204] Item 4. The apparatus according to any one of items 1 to 3, wherein at least one beam report trigger condition includes at least one of the following:

[0205] The number of beam failure events is below a beam failure event threshold,

[0206] The number of beam failure events is above a beam failure event threshold.

[0207] Item 5. The apparatus according to item 4, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0208] Item 6. The apparatus according to any one of items 4 to 5, wherein with respect to the determination, the instructions, when executed by at least one processor, cause the apparatus to at least perform:

[0209] Monitor the plurality of beams for the beam failure event; and

[0210] Count the number of the beam failure events for each beam of the plurality of beams.

[0211] Item 7. The apparatus according to any one of items 1 to 6, wherein at least one beam report trigger condition includes at least one of the following:

[0212] The power value of the received reference signal is higher than a reference signal reception power threshold,

[0213] The power value of the received reference signal is lower than the reference signal reception power threshold,

[0214] The signal-to-interference-and-noise ratio is higher than a signal-to-interference-and-noise ratio threshold,

[0215] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0216] The channel quality indicator value is higher than the channel quality indicator threshold,

[0217] The channel quality indicator value is lower than the channel quality indicator threshold.

[0218] Item 8. A device according to any one of Items 1 to 7, wherein the instructions, when executed by at least one processor, cause the device to at least perform:

[0219] Send an indication of an expected frequent terminal-triggered beam report to the access network entity.

[0220] Item 9. A device, comprising:

[0221] At least one processor; and

[0222] At least one memory storing instructions that, when executed by at least one processor, cause the device to at least perform:

[0223] Send information for the terminal to select a candidate beam from multiple beams;

[0224] Send at least one beam report trigger condition to the terminal; and

[0225] Receive from the terminal an indication that at least one candidate beam satisfies one of the at least one beam report trigger conditions.

[0226] Item 10. The device according to Item 9, wherein each corresponding beam of the multiple beams is associated with a corresponding reference signal.

[0227] Item 11. The device according to Item 9 or 10, wherein the information for selecting a candidate beam from the multiple beams includes at least one of the following:

[0228] A beam having a transmission configuration indication state associated with at least one control channel,

[0229] A beam having a transmission configuration indication state not associated with at least one control channel,

[0230] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0231] Item 12. The device according to any one of Items 9 to 11, wherein at least one beam report trigger condition includes at least one of the following:

[0232] The number of beam failure events is lower than the beam failure event threshold;

[0233] The number of the beam failure events is higher than the beam failure event threshold.

[0234] Item 13. The apparatus according to item 12, wherein the beam failure event threshold is defined as a percentage of the beam failure recovery threshold.

[0235] Item 14. The apparatus according to any one of items 9 to 13, wherein at least one beam reporting trigger condition comprises at least one of the following:

[0236] The power value of the received reference signal is higher than the reference signal reception power threshold,

[0237] The power value of the received reference signal is lower than the reference signal reception power threshold,

[0238] The signal-to-interference-and-noise ratio is higher than the signal-to-interference-and-noise ratio threshold,

[0239] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0240] The channel quality indicator value is higher than the channel quality indicator threshold,

[0241] The channel quality indicator value is lower than the channel quality indicator threshold.

[0242] Item 15. The apparatus according to any one of items 9 to 14, wherein the instructions, when executed by at least one processor, cause the apparatus to at least perform:

[0243] Receive an indication of an expected frequent terminal-triggered beam report from the terminal; and

[0244] Configure, for the beam report type, the indication of the expected frequent terminal-triggered beam report.

[0245] Item 16. An apparatus, comprising:

[0246] A receiving circuit system configured to:

[0247] Receive information for selecting a candidate beam from a plurality of beams from an access network entity, and

[0248] Receive at least one beam reporting trigger condition from the access network entity;

[0249] A determining circuit system configured to determine, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one beam reporting trigger condition among the at least one beam reporting trigger condition; and

[0250] A transmission circuit system, configured to send an indication that the at least one candidate beam meets one of the at least one beam report trigger conditions to an access network entity.

[0251] Item 17. The apparatus according to item 16, wherein each respective beam among the plurality of beams is associated with a respective reference signal.

[0252] Item 18. The apparatus according to any one of items 16 to 17, wherein the information for selecting candidate beams from the plurality of beams includes at least one of the following:

[0253] A beam having a transmission configuration indication state associated with at least one control channel,

[0254] A beam having a transmission configuration indication state not associated with at least one control channel,

[0255] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0256] Item 19. The apparatus according to any one of items 16 to 18, wherein at least one beam report trigger condition includes at least one of the following:

[0257] The number of beam failure events is lower than a beam failure event threshold;

[0258] The number of beam failure events is higher than a beam failure event threshold.

[0259] Item 20. The apparatus according to item 19, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0260] Item 21. The apparatus according to any one of items 19 to 20, further comprising:

[0261] A monitoring circuit system, configured to monitor the plurality of beams for the beam failure events; and

[0262] A counting circuit system, configured to count the number of the beam failure events for each beam among the plurality of beams.

[0263] Item 22. The apparatus according to any one of items 16 to 21, wherein at least one beam report trigger condition includes at least one of the following:

[0264] The power value of the received reference signal is higher than a reference signal reception power threshold,

[0265] The power value of the received reference signal is lower than the reference signal reception power threshold,

[0266] The signal-to-interference-and-noise ratio is higher than the signal-to-interference-and-noise ratio threshold,

[0267] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0268] The channel quality indicator value is higher than the channel quality indicator threshold, or

[0269] The channel quality indicator value is lower than the channel quality indicator threshold.

[0270] Item 23. The apparatus according to any one of Items 16 to 22 further includes:

[0271] A transmitting circuitry configured to send an indication of an expected frequent terminal-triggered beam report to the access network entity.

[0272] Item 24. An apparatus includes:

[0273] A transmitting circuitry configured to:

[0274] Send information for a terminal to select a candidate beam from multiple beams, and

[0275] Send at least one beam report trigger condition to the terminal; and

[0276] A receiving circuitry configured to receive from the terminal an indication that at least one of the candidate beams satisfies one of the at least one beam report trigger conditions.

[0277] Item 25. The apparatus according to Item 24, wherein each respective beam of the multiple beams is associated with a respective reference signal.

[0278] Item 26. The apparatus according to Item 24 or 25, wherein the information for selecting a candidate beam from the multiple beams includes at least one of the following:

[0279] A beam having a transmission configuration indication state associated with at least one control channel,

[0280] A beam having a transmission configuration indication state not associated with at least one control channel,

[0281] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0282] Item 27. The apparatus according to any one of Items 24 to 26, wherein at least one beam report trigger condition includes at least one of the following:

[0283] The number of beam failure events is lower than the beam failure event threshold,

[0284] The number of beam failure events is higher than the beam failure event threshold.

[0285] Item 28. The apparatus according to item 27, wherein the beam failure event threshold is defined as a percentage of the beam failure recovery threshold.

[0286] Item 29. The apparatus according to any one of items 24 to 28, wherein at least one beam report triggering condition includes at least one of the following:

[0287] The power value of the received reference signal is higher than the reference signal reception power threshold,

[0288] The power value of the received reference signal is lower than the reference signal reception power threshold,

[0289] The signal-to-interference-and-noise ratio is higher than the signal-to-interference-and-noise ratio threshold,

[0290] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0291] The channel quality indicator value is higher than the channel quality indicator threshold, or

[0292] The channel quality indicator value is lower than the channel quality indicator threshold.

[0293] Item 30. The apparatus according to any one of items 24 to 29, further comprising:

[0294] A receiving circuitry configured to receive an indication of an expected frequent terminal-triggered beam report from the terminal; and

[0295] A consideration circuitry configured to configure considering the indication of the expected frequent terminal-triggered beam report for a beam report type.

[0296] Item 31. A method, comprising:

[0297] Receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams;

[0298] Receiving, from the access network entity, at least one beam report triggering condition;

[0299] Based on the information for selecting the candidate beam from the plurality of beams, determining that at least one candidate beam satisfies one beam report triggering condition of the at least one beam report triggering condition; and

[0300] Sending an indication to the access network entity that the at least one candidate beam satisfies the one beam report triggering condition of the at least one beam report triggering condition.

[0301] Item 32. According to the method of Item 31, each respective beam among the plurality of beams is associated with a respective reference signal.

[0302] Item 33. According to the method of any one of Items 31 to 32, wherein the information for selecting a candidate beam from the plurality of beams includes at least one of the following:

[0303] A beam having a transmission configuration indication state associated with at least one control channel,

[0304] A beam having a transmission configuration indication state not associated with at least one control channel,

[0305] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0306] Item 34. According to the method of any one of Items 31 to 33, wherein at least one beam reporting trigger condition includes at least one of the following:

[0307] The number of beam failure events is lower than a beam failure event threshold,

[0308] The number of beam failure events is higher than a beam failure event threshold.

[0309] Item 35. According to the method of Item 34, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0310] Item 36. According to the method of any one of Items 34 to 35, wherein regarding the determination, the method further includes:

[0311] Monitoring the plurality of beams regarding the beam failure events; and

[0312] Counting the number of beam failure events for each beam among the plurality of beams.

[0313] Item 37. According to the method of any one of Items 31 to 36, wherein at least one beam reporting trigger condition includes at least one of the following:

[0314] The power value of the received reference signal is higher than a reference signal received power threshold,

[0315] The power value of the received reference signal is lower than the reference signal received power threshold,

[0316] The signal-to-interference-and-noise ratio is higher than a signal-to-interference-and-noise ratio threshold,

[0317] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0318] The channel quality indicator value is higher than the channel quality indicator threshold,

[0319] The channel quality indicator value is lower than the channel quality indicator threshold.

[0320] Item 38. The method according to any one of Items 31 to 37 further includes:

[0321] Sending an indication of an expected frequent terminal-triggered beam report to the access network entity.

[0322] Item 39. A method includes:

[0323] Sending information for a terminal to select a candidate beam from multiple beams;

[0324] Sending at least one beam report trigger condition to the terminal; and

[0325] Receiving from the terminal an indication that at least one candidate beam satisfies one of the at least one beam report trigger conditions.

[0326] Item 40. The method according to Item 39, wherein each corresponding beam of the multiple beams is associated with a corresponding reference signal.

[0327] Item 41. The method according to Item 39 or 40, wherein the information for selecting a candidate beam from the multiple beams includes at least one of the following:

[0328] A beam having a transmission configuration indication state associated with at least one control channel,

[0329] A beam having a transmission configuration indication state not associated with at least one control channel,

[0330] A beam having a transmission configuration indication state associated with a timing advance group identifier.

[0331] Item 42. The method according to any one of Items 39 to 41, wherein at least one beam report trigger condition includes at least one of the following:

[0332] The number of beam failure events is lower than the beam failure event threshold;

[0333] The number of beam failure events is higher than the beam failure event threshold.

[0334] Item 43. The method according to Item 42, wherein the beam failure event threshold is defined as a percentage of the beam failure recovery threshold.

[0335] Item 44. The method according to any one of Items 39 to 43, wherein at least one beam report trigger condition includes at least one of the following:

[0336] The power value of the received reference signal is higher than the reference signal reception power threshold,

[0337] The power value of the received reference signal is lower than the reference signal reception power threshold,

[0338] The signal-to-interference-and-noise ratio is higher than the signal-to-interference-and-noise ratio threshold,

[0339] The signal-to-interference-and-noise ratio is lower than the signal-to-interference-and-noise ratio threshold,

[0340] The channel quality indicator value is higher than the channel quality indicator threshold,

[0341] The channel quality indicator value is lower than the channel quality indicator threshold.

[0342] Item 45. The method according to any one of Items 39 to 44 further includes:

[0343] Receiving an indication of an expected frequent terminal-triggered beam report from the terminal; and

[0344] Configuring the beam report type to consider the indication of the expected frequent terminal-triggered beam report.

[0345] Item 46. A computer program product includes computer-executable computer program code that, when the program runs on a computer, is configured to cause the computer to implement the method according to any one of Items 31 to 38 or 39 to 45.

[0346] Item 47. The computer program product according to Item 46, wherein the computer program product includes a computer-readable medium having computer-executable computer program code stored thereon, and / or wherein the program can be directly loaded into the internal memory or the processor of the computer.

[0347] Item 48. A device, the device includes:

[0348] At least one processor; and

[0349] At least one memory storing instructions that, when executed by the at least one processor, cause the device to at least perform:

[0350] Receiving information for selecting candidate beams from multiple beams from an access network entity;

[0351] Receiving at least one beam report trigger condition from the access network entity;

[0352] Selecting a preferred beam from the multiple beams based on terminal-side optimization parameters;

[0353] Evaluate whether to select at least one of the preferred beams based on the information for selecting candidate beams;

[0354] Determine that at least one of the preferred beams to be selected based on the information for selecting candidate beams satisfies one of the beam report trigger conditions among the at least one beam report trigger condition; and

[0355] Send an indication to the access network entity, where the indication is that the at least one preferred beam selected based on the information for selecting candidate beams satisfies the one beam report trigger condition among the at least one beam report trigger condition.

[0356] Item 49. The apparatus according to item 48, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least perform:

[0357] Determine the terminal-side optimization parameters, where the terminal-side optimization parameters include at least one of the following;

[0358] Link budget,

[0359] Reliability,

[0360] Terminal power consumption.

[0361] Item 50. The apparatus according to item 49, where the terminal-side optimization parameter is terminal power consumption, and the instructions, when executed by the at least one processor, cause the apparatus to at least perform:

[0362] Select a power mode based on the terminal-side optimization parameter, where the power mode defines the number of active antenna panels,

[0363] Wherein regarding the evaluation, the instructions, when executed by the at least one processor, cause the apparatus to at least perform:

[0364] Only consider beams that do not increase the number of active antenna panels.

[0365] Item 51. The apparatus according to item 49, where the terminal-side optimization parameter is terminal power consumption, and the instructions, when executed by the at least one processor, cause the apparatus to at least perform:

[0366] Select a power mode based on the terminal-side optimization parameter, where the power mode defines the number of active antenna panels,

[0367] Wherein regarding the evaluation, the instructions, when executed by the at least one processor, cause the at least to perform:

[0368] Only consider beams whose number of active antenna panels is equal to or less than the active antenna panel threshold.

[0369] Item 52. The apparatus according to the apparatus in Item 48 or 49, wherein, regarding the evaluation, the instructions, when executed by at least one processor, cause the apparatus to at least perform:

[0370] Check whether a preferred beam that would not be selected based on the information for selecting candidate beams must be selected based on the information for selecting candidate beams with modified beam reporting settings;

[0371] Modify the beam reporting settings for the preferred beam; and

[0372] Determine that the preferred beam will be selected based on the information for selecting candidate beams.

[0373] Item 53. The apparatus according to any one of Items 48 to 52, wherein each respective beam among the plurality of beams is associated with a respective reference signal.

[0374] Item 54. The apparatus according to any one of Items 48 to 53, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state associated with at least one control channel.

[0375] Item 55. The apparatus according to any one of Items 48 to 53, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state not associated with at least one control channel.

[0376] Item 56. The apparatus according to any one of Items 48 to 53, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0377] Item 57. The apparatus according to any one of Items 48 to 53, wherein the information for selecting candidate beams from the plurality of beams specifies a beam for which the number of beam failure events satisfies a beam failure event threshold condition.

[0378] Item 58. The apparatus according to Item 57, wherein if the number of beam failure events is higher than the beam failure event threshold, the beam failure event threshold condition is satisfied, or

[0379] if the number of beam failure events is lower than the beam failure event threshold, the beam failure event threshold condition is satisfied.

[0380] Item 59. The apparatus according to Item 58, wherein the beam failure event threshold is defined as a percentage of the beam failure recovery threshold.

[0381] Item 60. The apparatus according to any one of Items 57 to 59, wherein with respect to selecting the preferred beam from the plurality of beams based on the terminal-side optimization parameter, the instructions, when executed by at least one processor, cause the apparatus to at least perform:

[0382] monitor the plurality of beams for the beam failure event; and

[0383] count the number of beam failure events for each beam in the plurality of beams.

[0384] Item 61. A method, the method comprising:

[0385] receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams;

[0386] receiving, from the access network entity, at least one beam reporting trigger condition;

[0387] selecting a preferred beam from the plurality of beams based on terminal-side optimization parameters;

[0388] evaluating whether to select at least one of the preferred beams based on the information for selecting the candidate beam;

[0389] determining that at least one of the preferred beams to be selected based on the information for selecting the candidate beam satisfies one of the at least one beam reporting trigger conditions; and

[0390] sending an indication to the access network entity, the indication being that at least one of the preferred beams selected based on the information for selecting the candidate beam satisfies the one of the at least one beam reporting trigger conditions.

[0391] Item 62. The method according to Item 61, further comprising:

[0392] determining the terminal-side optimization parameter, where the terminal-side optimization parameter includes at least one of the following;

[0393] link budget,

[0394] reliability,

[0395] terminal power consumption.

[0396] Item 63. The method according to Item 62, wherein the terminal-side optimization parameter is terminal power consumption, and the method further comprises:

[0397] selecting a power mode based on the terminal-side optimization parameter, the power mode defining the number of active antenna panels, and wherein with respect to the evaluation, the method further comprises:

[0398] Only consider beams that do not increase the number of active antenna panels.

[0399] Item 64. The method according to item 62, wherein the terminal - side optimization parameter is terminal power consumption, and the method further includes:

[0400] Select a power mode based on the terminal - side optimization parameter, the power mode defining the number of active antenna panels, and wherein with respect to the evaluation, the method further includes:

[0401] Only consider beams for which the number of active antenna panels is equal to or less than an active antenna panel threshold.

[0402] Item 65. The method according to item 61 or 62, wherein with respect to the evaluation, the method further includes:

[0403] Check whether a preferred beam that would not be selected based on the information for selecting candidate beams must be selected based on the information for selecting candidate beams with a modified beam reporting setting;

[0404] Modify the beam reporting setting for the preferred beam; and

[0405] Decide that the preferred beam will be selected based on the information for selecting candidate beams.

[0406] Item 66. The method according to any one of items 61 to 65, wherein each respective beam of the plurality of beams is associated with a respective reference signal.

[0407] Item 67. The method according to any one of items 61 to 66, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state associated with at least one control channel.

[0408] Item 68. The method according to any one of items 61 to 66, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state not associated with at least one control channel.

[0409] Item 69. The method according to any one of items 61 to 66, wherein the information for selecting candidate beams from the plurality of beams specifies a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0410] Item 70. The method according to any one of items 61 to 65, wherein the information for selecting candidate beams from the plurality of beams specifies a beam for which the number of beam failure events satisfies a beam failure event threshold condition.

[0411] Item 71. The method according to Item 70, wherein if the number of the beam failure events is higher than a beam failure event threshold, the beam failure event threshold condition is satisfied, or

[0412] if the number of the beam failure events is lower than the beam failure event threshold, the beam failure event threshold condition is satisfied.

[0413] Item 72. The method according to Item 71, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0414] Item 73. The method according to any one of Items 70 to 72, wherein regarding the selection of the preferred beam from the plurality of beams based on the terminal-side optimization parameter, the method further comprises:

[0415] monitoring the plurality of beams for the beam failure events; and

[0416] counting the number of the beam failure events for each beam in the plurality of beams.

[0417] Item 74. A device, comprising:

[0418] at least one antenna, wherein

[0419] the device is configured to perform the method according to any one of Items 61 to 73, wherein optionally,

[0420] the device is a terminal.

[0421] Item 75. A device, comprising:

[0422] a receiving circuit system, configured to:

[0423] receive information for selecting a candidate beam from a plurality of beams from an access network entity, and

[0424] receive at least one beam report trigger condition from the access network entity;

[0425] a selection circuit system, configured to select a preferred beam from the plurality of beams based on terminal-side optimization parameters;

[0426] an evaluation circuit system, configured to evaluate whether to select at least one of the preferred beams based on the information for selecting the candidate beam;

[0427] a determination circuit system, configured to determine that at least one preferred beam to be selected based on the information for selecting the candidate beam satisfies one beam report trigger condition of the at least one beam report trigger condition; and

[0428] A transmitting circuit system, configured to send an indication to the access network entity, where the indication is at least one preferred beam selected based on the information for selecting candidate beams and satisfies one of the at least one beam reporting trigger conditions.

[0429] Item 76. The apparatus according to item 75 further includes:

[0430] A decision circuit system, configured to determine the terminal-side optimization parameters, where the terminal-side optimization parameters include at least one of the following:

[0431] Link budget,

[0432] Reliability,

[0433] Terminal power consumption.

[0434] Item 77. The apparatus according to item 76, where the terminal-side optimization parameter is terminal power consumption, and the apparatus further includes:

[0435] A selection circuit system, configured to select a power mode based on the terminal-side optimization parameter, where the power mode defines the number of active antenna panels, and

[0436] A consideration circuit system, configured to only consider beams that do not increase the number of active antenna panels.

[0437] Item 78. The apparatus according to item 62, where the terminal-side optimization parameter is terminal power consumption, and the apparatus further includes:

[0438] A selection circuit system, configured to select a power mode based on the terminal-side optimization parameter, where the power mode defines the number of active antenna panels, and

[0439] A consideration circuit system, configured to only consider beams whose number of active antenna panels is equal to or less than the active antenna panel threshold.

[0440] Item 79. The apparatus according to item 75 or 76 further includes:

[0441] An inspection circuit system, configured to check whether a preferred beam that will not be selected based on the information for selecting candidate beams must be selected based on the information for selecting candidate beams with modified beam reporting settings.

[0442] A modification circuit system, configured to modify the beam reporting settings for the preferred beam, and

[0443] A decision circuit system, configured to determine that the preferred beam will be selected based on the information for selecting candidate beams.

[0444] Item 80. The apparatus according to any one of Items 75 to 79, wherein each respective beam of the plurality of beams is associated with a respective reference signal.

[0445] Item 81. The apparatus according to any one of Items 75 to 80, wherein the information for selecting a candidate beam from the plurality of beams designates a beam having a transmission configuration indication state associated with at least one control channel.

[0446] Item 82. The apparatus according to any one of Items 75 to 80, wherein the information for selecting a candidate beam from the plurality of beams designates a beam having a transmission configuration indication state not associated with at least one control channel.

[0447] Item 83. The apparatus according to any one of Items 75 to 80, wherein the information for selecting a candidate beam from the plurality of beams designates a beam having a transmission configuration indication state associated with a timing advance group identifier.

[0448] Item 84. The apparatus according to any one of Items 75 to 80, wherein the information for selecting a candidate beam from the plurality of beams designates a beam for which the number of beam failure events satisfies a beam failure event threshold condition.

[0449] Item 85. The apparatus according to Item 84, wherein if the number of beam failure events is higher than the beam failure event threshold, the beam failure event threshold condition is satisfied, or

[0450] if the number of beam failure events is lower than the beam failure event threshold, the beam failure event threshold condition is satisfied.

[0451] Item 86. The apparatus according to Item 85, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

[0452] Item 87. The apparatus according to any one of Items 84 to 86, further comprising:

[0453] monitoring circuitry configured to monitor the plurality of beams with respect to the beam failure events; and

[0454] counting circuitry configured to count the number of beam failure events for each of the plurality of beams.

[0455] Item 88. A computer program product comprising computer-executable computer program code that, when the program is run on a computer, is configured to cause the computer to perform the method according to any one of Items 61 to 73.

[0456] Item 89. A computer program product according to item 88, wherein the computer program product comprises a computer readable medium having computer executable computer program code stored thereon, and / or wherein the program can be directly loaded into the internal memory of the computer or into its processor.

[0457] List of abbreviations and abbreviations

[0458] 3GPP Third Generation Partnership Project

[0459] BFR Beam Failure Recovery

[0460] DCI Downlink Control Information

[0461] DL Downlink

[0462] FR Frequency Range

[0463] MAC-CE Access Control-Control Element

[0464] MIMO Multiple Input Multiple Output

[0465] MTTD Maximum Transmit Timing Difference

[0466] MRTD Maximum Receive Timing Difference

[0467] NW Network

[0468] PDCCH Physical Downlink Control Channel

[0469] PDSCH Physical Downlink Shared Channel

[0470] PRB Physical Resource Block

[0471] PUCCH Physical uplink control channel

[0472] PUSCH Physical uplink shared channel

[0473] RRC Radio Resource Control

[0474] RS reference signal

[0475] RSRP Reference Signal Received Power

[0476] RTD Receive Timing Difference

[0477] SINR Signal to Interference and Noise Ratio

[0478] SNR Signal to Noise Ratio

[0479] STxMP Simultaneous Multi-Panel

[0480] TA Timing Advance

[0481] TAG Timing Advance Group

[0482] TCI Transmission Configuration Indicator

[0483] TDM Time Division Multiplexing

[0484] TRP Transmission and Reception Point

[0485] UE User Equipment

[0486] UL Uplink

Claims

1. A device for communication, comprising: at least one processor; as well as at least one memory storing instructions, which when executed by the at least one processor cause the apparatus to at least perform: receiving, from an access network entity, information for selecting a candidate beam from a plurality of beams; receiving at least one beam report trigger condition from the access network entity; Determining, based on the information for selecting a candidate beam from the plurality of beams, that at least one candidate beam satisfies one of the at least one beam report triggering conditions; as well as Sending an indication to the access network entity that the at least one candidate beam satisfies the one beam report trigger condition among the at least one beam report trigger condition. 2 . The apparatus of claim 1 , wherein each respective beam of the plurality of beams is associated with a respective reference signal.

3. The apparatus according to claim 1 or 2, wherein the information used to select a candidate beam from the plurality of beams comprises at least one of the following: a beam having a transmission configuration indicating a state associated with at least one control channel, a beam having a transmission configuration indicating state not associated with at least one control channel, A beam having a transmission configuration associated with a timing advance group identifier indicates a state.

4. The apparatus according to claim 1 or 2, wherein the at least one beam report triggering condition comprises at least one of the following: The number of beam failure events is lower than the beam failure event threshold, The number of the beam failure events is higher than the beam failure event threshold.

5. The apparatus of claim 4, wherein the beam failure event threshold is defined as a percentage of a beam failure recovery threshold.

6. The apparatus of claim 4, wherein with respect to the determining, the instructions, when executed by the at least one processor, cause the apparatus to at least perform: monitoring the plurality of beams with respect to the beam failure event; and The number of beam failure events is counted for each beam of the plurality of beams.

7. The apparatus according to claim 1 or 2, wherein the at least one beam report triggering condition comprises at least one of the following: The power value of the received reference signal is higher than the reference signal receiving power threshold. The power value of the received reference signal is lower than the reference signal receiving power threshold, The signal to interference and noise ratio is higher than the signal to interference and noise ratio threshold, The signal to interference and noise ratio value is lower than the signal to interference and noise ratio threshold, The channel quality indicator value is higher than the channel quality indicator threshold, The channel quality indicator value is below the channel quality indicator threshold.

8. The apparatus of claim 1 or 2, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least perform: An indication of expected frequent terminal triggered beam reporting is sent to the access network entity.

9. An apparatus for communication, comprising: at least one processor; as well as at least one memory storing instructions, which when executed by the at least one processor cause the apparatus to at least perform: Sending information for selecting a candidate beam from a plurality of beams to a terminal; Sending at least one beam report trigger condition to the terminal; as well as An indication is received from the terminal that at least one candidate beam satisfies one of the at least one beam report triggering condition.

10. The apparatus of claim 9, wherein each respective beam of the plurality of beams is associated with a respective reference signal.

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