Techniques are disclosed for determining a specific velocity of a device attached to a wireless network. The specific velocity can be determined using a handover count of the base station boundary transitions over a time window and/or using a set of sojourn time samples that each denote the duration the device remains in the zone of a particular base station. Techniques operate effectively in cellular networks having high base station densities. The specific velocity estimates may be inputs to components on the device or network to adjust a local device function or performance behavior.

The disclosure relates to a method and device for self-optimization and self-configuration, and provides a method performed by a first node in a wireless communication system, including: acquiring, by the first node, first configuration information related to a successful handover report (SHR); transmitting, by the first node, the first configuration information to a user equipment (UE).

The present disclosure relates generally to the field of wireless communications, and particularly to a network-based mechanism for early detection of failures during fast Master Cell Group (MCG) recovery. For this purpose, a Secondary Node (SN) may determine that a User Equipment (UE) experiencing an MCG failure is unable to receive a command for handover (HO) from a source MCG to a target MCG. This determination may be based on the occurrence of at least one of the following events: (i) a recovery timer (e.g., T316 timer) has expired at the UE, and (ii) a number of retransmissions performed by the SN to deliver the HO command to the UE reaches a threshold before the recovery timer expires. The SN may then report the fast MCG recovery failure to a Master Node (MN), with the indication that event (i) and/or event (ii) has occurred. This may allow the MN to take appropriate actions (e.g., properly correct the recovery timer), which may in turn decrease the interruption time caused by similar MCG failures and save network resources in the future.

Aspects are provided which allow a UE to apply new radio high-speed train mode determination and false alarm suppression in HST deployments. The UE combines a plurality of indications associated with a high-speed train (HST) mode detection into a consolidated HST mode configuration signal. The UE determines whether to suppress the consolidated HST mode configuration signal based on a mobility metric of the UE and a plurality of thresholds. The UE transitions into a HST mode when the consolidated HST mode configuration signal is not suppressed based on the mobility metric of the UE exceeding at least one of the plurality of thresholds. As a result, false HST mode flags may be avoided and HST mode detection success rates may thereby be improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may compare an external list of ping pong handovers or redirections that is maintained by an access point, and an internal list of ping pong handovers or redirections that is maintained by the UE. The UE may identify a ping pong detection criterion, for a handover or redirection between a first network node and a second network node, based, at least in part, on the external list, the internal list, both the external list and the internal list, or neither of the external list nor the internal list indicating a previous ping pong handover or redirection between the first network node and the second network node. Numerous other aspects are described.

Embodiments include methods for user equipment (UE) to provide successful handover reports to a radio access network (RAN). Such methods include receiving, from the RAN, a configuration for successful handover reporting (SHR) by the UE. The SHR configuration includes a single supervision timer threshold that is associated with all measurement objects configured for the UE. Such methods include, upon transmitting to the RAN a measurement report associated with a first one of the measurement objects, initiating a supervision timer based on an initial time value associated with the first measurement object. Such methods include, based on receiving from the RAN a handover command to a target cell, determining whether time elapsed from the supervision timer exceeds the supervision timer threshold included in the SHR configuration and transmitting a successful handover report to the RAN based on determining that the time elapsed exceeds the supervision timer threshold.

A method for assisting in cell combination management in a cellular communication system is presented. The method comprises obtaining of network statistics, comprising statistics associated with pairs of cells as well as cell loads. At least one candidate cell combinations selected. The candidate cell combination is a combination of cells for which a mobility measure deduced from the mobility statistics for pairs of cells participating in the combination of cells exceeds a first predetermined threshold. A total load capacity is determined for each of the candidate cell combinations. A cell combination procedure is recommended for a first cell combination. A cell combination, for which a load margin exceeds zero, is allowed to be chosen as the first cell combination. The load margin is a difference between the determined total load capacity and a sum of the cell loads. A network node performing such method is disclosed.

The present disclosure relates to a pre-5.sup.th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4.sup.th-generation (4G) communication system such as long term evolution (LTE). A communication method and apparatus using beamforming are provided. The method includes acquiring transmission beam specific, measurement information of a base station (BS) and measuring a reference signal (RS) transmitted through transmission beams of the BS according to the transmission beam specific, measurement information. The measurement information on each transmission beam is determined according to at least one of an elevation angle of the corresponding transmission beam, an azimuth of the corresponding transmission beam, a handover urgency, information on a handover failure, and information on a radio link failure (RLF). A mobile station (MS) may perform a measurement report or a handover process according to a result of the measurement.

A wireless communication method and Multi-SIM user equipment are provided. The wireless communication method for Multi-SIM dual standby (DSDS) technology is applied on Multi-SIM user equipment (UE) which is capable of carrier aggregation (CA) or dual connectivity (DuCo). The wireless communication method includes the steps of determining whether a packet switch (PS) or circuit switch (CS) paging is received on a second SIM card when a first PS call is ongoing in a first SIM card; and suspending the first PS call which is ongoing on the first SIM card if the packet switch (PS) or circuit switch (CS) paging is received on the second SIM card.

A method performed by a terminal in a wireless communication system is provided. The method comprises the steps of: receiving a message for a command of handover from a cell of a first radio access technology (RAT) to a target cell of a second RAT, the message including voicefallbackindication; performing handover from the cell of the first RAT to the target cell of the second RAT on the basis of the message; and determining report content for a radio link failure if establishment of a connection to the target cell is not successful, wherein the report content for a radio link failure can include information indicating that the handover failure is associated with voice fallback.