Patent classifications
H04W36/0088
Method and apparatus for managing handovers in wireless communication system
A method for controlling and managing handovers between base stations in adjoining cells in wireless communications enables a user equipment (UE) to report a bit error rate (BER) to a base station having current conduct of communication with the UE. If the BER is greater than a predetermined value, the base station having conduct further determines whether the UE satisfies a handover condition over a period of time and hands conduct over to another base station if the UE satisfies the handover condition for the period of time and if the other base station is not already operating at capacity. An apparatus for controlling and managing handovers is also disclosed.
Cell measurement in communication systems, related configuration and devices
This application discloses a measurement method for a terminal device, including: receiving measurement configuration information; and measuring, in m measurement windows in a measurement gap based on the measurement configuration information, m groups of to-be-measured signals sent by a network device. Correspondingly, this application also describes a measurement configuration method, a terminal device, and a network device. According to an example implementation, the terminal device discontinuously performs measurement in the measurement windows in the measurement gap, and transmits data by using an interval between the measurement windows, to implement discontinuous measurement in the measurement gap, and further reduce a data transmission delay.
TECHNIQUES FOR PERFORMING MEASUREMENT RELAXATION
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication that the UE is to perform radio resource management (RRM) measurements at a first periodicity. The UE may identify an RRM measurement relaxation grouping to which the UE belongs based on at least one of a mobility of the UE or a location of the UE within a cell, such as whether the UE is near a cell-edge, or whether the UE is stationary or moving in accordance with low-mobility, or a combination thereof. The UE may determine a first relaxation parameter from a plurality of relaxation parameters based on measurement relaxation criterion associated with the cell, where the plurality of relaxation parameters may be associated with the RRM measurement relaxation grouping. The UE may perform the RRM measurements at a second periodicity that is based on the first relaxation parameter.
LINK FAILURE MONITORING AT A MULTI-SIM DEVICE IN A WIRELESS NETWORK
A multi-SIM user equipment (UE) can perform link failure operations associated with a first universal subscriber identity module (USIM) in an active state during a time gap when the UE can perform a network operation on a second USIM in a non-active state. The UE can monitor a failure event associated with the first USIM using a first procedure. The failure event includes a radio link failure, a beam failure, and/or a listen-before-talk (LBT) failure. The UE can transmit a request to a network entity for a time gap to perform a network operation associated with the second USIM, while the first USIM remains in a radio resource control (RRC) connected state during the time gap. The UE can monitor, using a second procedure during the time gap, the failure event associated with the first USIM.
Discontinuous reception (DRX) enhancements in LTE systems
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.
ON TRIGGERING MEASUREMENTS IN LTE-NR INTERWORKING
According to certain embodiments, a method in a wireless device is provided. The wireless device is currently connected to a first radio access node and configured with an s-measure by the first radio access node that controls when the wireless device starts performing measurements. Upon configuration by the first radio access node to perform measurements on a first radio access technology, RAT, the wireless device starts to perform the measurements when the first radio access node's s-measure criteria is fulfilled. Upon configuration by the first radio access node to perform measurements on a second RAT, the wireless device starts to perform the measurements on the second RAT whether the first radio access node's s-measure criteria is fulfilled or not.
ADAPTING AT LEAST ONE OPERATION PARAMETER
An apparatus, method and computer program product for: receiving a control message comprising power saving information, determining, based on the power saving information, adaptation of at least one operation parameter relating to radio resource management in the low-power mode and causing adapting the at least one operation parameter relating to radio resource management according to the determined adaptation.
HANDOVER FOR AERIAL USER EQUIPMENT SERVED BY TERRESTRIAL NETWORKS
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.
TIMING CHANGE AND NEW RADIO MOBILITY PROCEDURE
A method of determining the maximum timing change (MTC) based on subcarrier spacing (SCS) configuration for UE measurement and reporting of a neighbor cell in 5 GS is proposed. During measurement procedure, UE first checks whether a neighbor cell has been detectable at least for the time period T.sub.identity, and becomes undetectable for a period ≤5 seconds, and then the cell becomes detectable again. UE then determines the MTC of the cell according to the SCS configuration of the cell. If the timing change of the cell is <MTC, UE reports the measurement report less than a first period (T1) after the measurement event is triggered. Otherwise, if the timing change of the cell is >MTC, UE reports the event triggered measurement reporting less than a second period (T2) after the measurement event is triggered.
ADJUSTING REFERENCE SIGNAL REPORTING BASED ON UPLINK CHANNEL CONDITIONS
Methods and systems for adjusting reference signal reporting based on path loss and fading and cell edge conditions experienced by wireless devices in 5G EN-DC networks. As the path loss increases, a period between reference signal reports (or a frequency of reference signal reports) can be increased. This ensures continued quality of service for the wireless devices. Reference signals can include SRS, DMRS, PTRS, etc.