Methods and apparatuses for beam management reporting
Systems, methods, apparatuses, and computer program products for beam management (BM) reporting are provided. One method may include determining, at a UE, that reporting configuration(s) need to be activated, and providing, to a network, an indication to activate the reporting configuration(s).
1 . An apparatus, comprising:
at least one processor; and
at least one memory comprising computer program code,
the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to:
determine at least one reporting configuration needs to be activated, wherein the determination that the at least one reporting configuration needs to be activated is triggered by at least one event, wherein the at least one event comprises when at least one beam failure instance or radio link monitoring (RLM) out-of-sync indication has been provided to upper layers by layer 1 (L1) or counted by layer 2 (L2);
provide, to a network, a first indication to activate the at least one reporting configuration,
wherein when providing the first indication, the apparatus signals, to the network, a second indication that reporting criteria for at least one non-serving cell beam management reporting are fulfilled,
wherein the at least one reporting configuration is preconfigured,
wherein the first indication includes a dedicated random access channel (RACH) preamble, dedicated scheduling request (SR), normal SR, medium access control (MAC) control element (CE), and physical uplink control channel (PUCCH)/physical uplink shared channel (PUSCH),
wherein at least one of a specific uplink (UL) signal, the dedicated SR, the normal SR, or a sounding reference signal (SRS) is associated with the at least one reporting configuration, and
wherein the first indication corresponds to at least one non-serving cell beam management reporting configuration;
receive, from the network, a configuration of a first threshold used for determining when to activate beam management reporting, wherein the first threshold includes: a set of individual beam downlink reference signals (DL RS) for cell quality;
receive, from the network, signaling including at least one activation of the at least one non-serving cell beam management reporting configuration, based on determining that a serving cell quality is below a second threshold configured by the network, the signaling further providing:
a serving cell quality threshold, used by the apparatus to determine when the serving cell quality is low enough to trigger the at least one activation of the at least one non-serving cell beam management reporting configuration,
for each of the at least one non-serving cell beam management reporting configuration, a neighbor cell beam quality threshold, used by the apparatus to determine whether a neighbor cell beam reference signal satisfies a first condition for activating the at least one non-serving cell beam management reporting configuration,
a reporting threshold, used by the apparatus to determine when to perform beam management reporting according to the at least one activated non-serving cell beam management reporting configuration, and
a reference signal quality threshold, applied by the apparatus to at least one reference signal associated with a resource in a resource set for a non-serving cell, to determine whether the reference signal quality satisfies a second condition for activating the at least one non-serving cell beam management reporting configuration,
wherein the at least one activation of the at least one non-serving cell beam management reporting configuration includes enabling beam management reporting of the at least one non-serving cell when the apparatus has indicated that a preconfigured reporting condition has been fulfilled;
perform beam management reporting according to the activated at least one non-serving cell beam management reporting configuration, wherein the performing occurs when the apparatus determines that the serving cell quality is below the first threshold; and
transmit, to the network, a beam management report according to the activated at least one non-serving cell beam management reporting configuration,
wherein the beam management report comprises a dynamic report comprising a combined serving and non-serving cell beam report, wherein the dynamic report comprises at least one non-serving cell beam index and quality.