Abstract:
An apparatus of a Radio Access Network (RAN) node, a system, and a method. The apparatus includes one or more processors to generate a conditional handover (CHO) execution message to a user equipment (UE), the CHO execution message including a plurality of execution conditions to trigger execution of a handover (HO) of the UE from the RAN node to a target RAN node; and causing transmission of the CHO execution message to the UE.
Abstract:
Embodiments of the present disclosure are directed toward devices and methods for fast radio link recovery in cellular networks. In one embodiment, the signal strength of the serving cell is compared to the signal strength of a target cell, and a radio link failure (RLF) timer is terminated or shortened based on the comparison. Alternatively, a second shorter timer may be used as opposed to modifying the current timer. In some embodiments, the modification of RLF timers may be triggered by the start of a measurement trigger timer. This may allow a user equipment to more quickly establish a connection with a target cell in situations where radio link failure or handover failure are likely to occur. In some instances, the parameters for terminating or shortening the radio link failure timer, or starting an additional timer, may be provided to the user equipment by a network.
Abstract:
Generally, this disclosure provides apparatus and methods for improved handover with ping pong avoidance in wireless heterogeneous networks. The UE device may include a handover (HO) module configured to determine a reference signal received power (RSRP) difference between a serving cell and a neighbor cell and to select a TimeToTrigger (TTT) related to an HO measurement report based, at least in part, on the RSRP difference.
Abstract:
Embodiments of the present disclosure describe systems, devices, and methods for load balancing in a wireless communication network based on user equipment (UE) mobility. In embodiments, a UE may receive a plurality of cell reselection priority configurations designated for different levels of UE mobility. The UE may determine its mobility and select one of the cell reselection priority configurations based on the determined mobility. The UE may establish a radio resource control (RRC) connection, such as an RRC idle mode connection, on a carrier frequency and/or cell based on the selected cell reselection priority configuration. Other embodiments may be described or claimed.
Abstract:
Technology for configuring measurement gap patterns is disclosed. An evolved node B (eNB) can generate multiple measurement gap patterns for a user equipment (UE), wherein each measurement gap pattern indicates at least one set of consecutive subframes within a defined time period during which the UE is to perform inter-frequency measurements for a selected cell. The eNB can configure the multiple measurement gap patterns from the eNB to the UE, the UE being configured to perform the inter-frequency measurements for selected cells within a group of cells according to the multiple measurement gap patterns.
Abstract:
Embodiments of user equipment (UE) and method for adaptively selecting an A3offset-TTT pair for handover in a wireless access network are generally described herein. In some embodiments, the UE may select an A3offset value based on target cell Reference Signal Received Power (RSRP) and select a time-to-trigger (TTT) based on serving cell RSRP. A measurement report may be transmitted to an eNodeB for handover when the target cell RSRP exceeds the serving cell RSRP by at least the A3offset value for the TTT. The A3offset value may be selected to be inversely related to the target cell RSRP and the TTT may be selected to be directly related to the serving cell RSRP.
Abstract:
Methods, systems, and devices for mobility optimization in a heterogeneous network are disclosed herein. A base station includes an anchor module, a context information module, and a transmission point module. The anchor module configures the base station as a virtual anchor cell for a plurality of small cells. The context information module is configured to maintain context information for user equipment (UE). The context information for the UE is maintained by the context information module while any small cell of the plurality of small cells is configured as a TP for the UE. The transmission point (TP) change module is configured to send at least a portion of the context information to a small cell configured as the TP for the UE.
Abstract:
Embodiments of apparatus and methods for signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul are generally described herein. In some embodiments, User Equipment configured for reporting a channel quality indicator (CQI) index in a channel state information (CSI) reference resource assumes a physical resource block (PRB) bundling size of two PRBs to derive the CQI index.
Abstract:
Generally, this disclosure provides apparatus and methods for improved handover with ping pong avoidance in wireless heterogeneous networks. The UE device may include a handover (HO) module configured to determine a reference signal received power (RSRP) difference between a serving cell and a neighbor cell and to select a TimeToTrigger (TTT) related to an HO measurement report based, at least in part, on the RSRP difference.
Abstract:
A prioritized cell identification and measurement method is disclosed. The method classifies frequency layers to be monitored and measured by an user equipment into normal- and reduced-performance groups. Several different embodiments are described. Where appropriate, the corresponding signaling design is also suggested. User equipment can adopt one or several of these embodiments, and can change configurations in a semi-static manner based on operating conditions.