Systems and methods for investigating and addressing excessive battery drainage in a wireless device in a cellular communications system are disclosed. In some embodiments, a method in a core network of a cellular communications system comprises receiving, from an external entity, a request to investigate excessive battery drainage at a particular wireless device and initiating collection of information related to operation of the wireless device. The information comprises user plane data, control plane information, and/or network information related to the wireless device. The method also comprises collecting the information from one or more network nodes in the cellular communications system, analyzing the collected information to determine one or more root causes of excessive battery drainage at the wireless device, and initiating one or more actions in the cellular communications system to mitigate excessive battery drainage at the wireless device.

Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.

Methods, User Equipment (UE), and source network node for resuming a Radio Resource Control (RRC) connection to a target cell in a wireless communications network. The UE generates a security token using a set of input parameters and sends a resuming request with the security token to a target network node serving the target cell. When receiving the resuming request, the source network node generates a security token using a set of input parameters in the same manner as the UE. If the received security token is successfully verified when compared with the generated security token, the source network node provides to the target network node a UE context of the UE, to enable the target network node to resume the RRC connection.

A method for user equipment connected to a cell for improving a handover list including obtaining information about communication devices in an environment and generating the handover list, transmitting the handover list to the cell and transmitting dynamic information about an own state to the cell, and receiving an improved handover list from the cell.

An architecture to avoid handover ping-pong for aerial user equipment (UE) operational in terrestrial fourth generation (4G) and/or fifth generation (5G) long term evolution (LTE) networks. A method can comprise receiving a request to connect to the network equipment from aerial user equipment; based on the request to connect, retrieving subscription data; based on the subscription data, determining that the aerial user equipment is aerial equipment; determining that the aerial user equipment is engaged in a ping-pong handover event with terrestrial based network equipment situated within a defined geographic area; and transmitting instructions to the aerial user equipment to confirm the ping-pong handover event, wherein the instruction comprises a delay value representing a back off time value for the aerial user equipment to refrain from gathering measurement data within the defined geographic area.

Disclosed are an information transmission method and apparatus, used for recording, by a UE, a radio link related problem that has occurred and reporting same to a network side after the UE is successfully handed over to a target cell, so that the network side can further improve robustness on the basis of SON handover optimization, such as existing too early handover. At a terminal side, the information transmission method provided by the embodiments of the present disclosure comprises: after a terminal is successfully handed over to a target cell, recording information related to a radio link problem; and reporting the information related to the radio link problem to a network side.

Methods, systems, and devices for wireless communications are described. A base station in a network of base stations may determine a predicted route of a user equipment (UE) based on sensor data obtained by sensors coupled with the base station. A neighboring base station may be located along the predicted route and the base station may provision the neighboring base station with a subset of beams associated with the neighboring base station. The subset of beams may include beams with geographic coverage areas overlapping with the predicted route of the UE. The base station may add the subset of beams to a provisioned route beam list and may transmit the provisioned route beam list to the neighboring base station in a message. The neighboring base station may use the subset of beams indicated in the provisioned route beam list for beamforming communications with the UE.

Techniques pertaining to a machine-learning assisted environment detection framework for self-adapting inter-radio access technology (inter-RAT) steering strategy in wireless communications are described. A user equipment (UE) extracts one or more feature metrics regarding a wireless network environment based at least partially on sensor information received from one or more sensors of the UE and radio frequency (RF) signal information from a RF circuit of the UE. The UE identifies a scenario with respect to a current status of the wireless network environment according to the one or more feature metrics. In response to identifying the scenario, the UE performs a RAT-related operation.

Embodiments of the present invention provide a method and apparatus for wireless communication, for use in a communication system at least using two beams. The method comprises: a network device determines transmission resources that can be used by M beam groups, wherein each beam group comprises at least one beam in the at least two beams, M≥1; the network device sends configuration information to a first terminal device, the configuration information being used for indicating the transmission source used by each beam group, so that the practicability and user experience of a multi-beam system can be improved.

This disclosure provides a method in a cellular telecommunications network having a first base station and a second base station, wherein the first base station is moving relative to a reference object and serves a User Equipment (UE) the method including identifying the UE's relative speed with respect to the reference object; preparing a message to transfer the UE to the second base station, the message including one or more information elements to indicate the UE's relative speed to the reference object, wherein a mobility state for the UE may be estimated from the one or more information elements indicating the UE's relative speed with respect to the reference object; and initiating a transfer of the UE from the first base station to the second base station by sending the message to the second base station, wherein the message includes the one or more information elements to indicate the UE's relative speed with respect to the reference object.