Abstract: A compound of formula I having the structure: or a pharmaceutically acceptable salt thereof, wherein A1 and A2 are independently O or S; X is selected from CH2, CD2, NR3, O, and S, where R3 is selected from hydrogen, C1-C4 linear or branched chain alkyl, halo(C1-C4)linear or branched chain alkyl, and hydroxyl(C1-C4)linear or branched chain alkyl; Y and Z are selected from C and N, where when Y is C, then Z is N, and when Y is N, then Z is C; R1 and R2 are independently selected from hydrogen, deuterium, C1-C4 linear or branched chain alkyl, etc.; or a C1-C2 alkyl substituted with a C3-C5 cycloalkyl ring; or taken together to form a C3-C6 cycloalkyl ring; or where X is CH2 or CD2, then R1 and R2 are independently selected from hydrogen, deuterium, halogen, hydroxyl, C1-C4 linear or branched chain alkyl, etc.; R4 is selected from hydrogen, deuterium, cyano, halogen, (C1-C3) alkoxy, etc.; R5 is selected from hydrogen, deuterium, halogen, C1-C3 alkoxy, amino, (C1-C4 linear or branched chain alkyl)amino, etc.

Abstract: A method includes establishing a first session (e.g., a Wi-Fi call) via a first connection to a first network, where the connection to the first network is provided by a first receiver of the mobile device, and monitoring a characteristic of the first connection to the first network. The method includes determining whether the characteristic satisfies a threshold. When the characteristic does not satisfy the threshold, the method includes activating a second receiver of the mobile device, establishing a second connection to a second network, and initiating a handover procedure to transfer the first session from the first network to the second network. The second connection to the second network is provided by the second receiver of the mobile device. As a result of the handover procedure, the first session may be merged with or transferred to a second session (e.g., a cellular call) provided via the second network.

Abstract: A method includes establishing a first session (e.g., a Wi-Fi call) via a first connection to a first network, where the connection to the first network is provided by a first receiver of the mobile device, and monitoring a characteristic of the first connection to the first network. The method includes determining whether the characteristic satisfies a threshold. When the characteristic does not satisfy the threshold, the method includes activating a second receiver of the mobile device, establishing a second connection to a second network, and initiating a handover procedure to transfer the first session from the first network to the second network. The second connection to the second network is provided by the second receiver of the mobile device. As a result of the handover procedure, the first session may be merged with or transferred to a second session (e.g., a cellular call) provided via the second network.

Abstract: A method includes establishing a first session (e.g., a Wi-Fi call) via a first connection to a first network, where the connection to the first network is provided by a first receiver of the mobile device, and monitoring a characteristic of the first connection to the first network. The method includes determining whether the characteristic satisfies a threshold. When the characteristic does not satisfy the threshold, the method includes activating a second receiver of the mobile device, establishing a second connection to a second network, and initiating a handover procedure to transfer the first session from the first network to the second network. The second connection to the second network is provided by the second receiver of the mobile device. As a result of the handover procedure, the first session may be merged with or transferred to a second session (e.g., a cellular call) provided via the second network.

Abstract: A mobile device may establish and register a connection to a first network at a registration server, and may subsequently establish and register a connection to a second network at the registration server. Registration of the connection to the second network may designate the second network as a primary network for providing services to the mobile device. In response to the registration of the connection to the second network, the mobile device may receive a notification indicating the connection to the second network is designated as a primary connection for providing at least one service to the mobile device. In response to receiving the notification, the mobile device may transmit, to a network entity, a pullback message including a request to refresh the registration of the first network at the registration server, thereby designating the first network as the primary network for providing the services to the mobile device.

Abstract: A method includes establishing a first session (e.g., a Wi-Fi call) via a first connection to a first network, where the connection to the first network is provided by a first receiver of the mobile device, and monitoring a characteristic of the first connection to the first network. The method includes determining whether the characteristic satisfies a threshold. When the characteristic does not satisfy the threshold, the method includes activating a second receiver of the mobile device, establishing a second connection to a second network, and initiating a handover procedure to transfer the first session from the first network to the second network. The second connection to the second network is provided by the second receiver of the mobile device. As a result of the handover procedure, the first session may be merged with or transferred to a second session (e.g., a cellular call) provided via the second network.

Abstract: A system, method, and computer-readable medium for resource migration in a distributed telecommunication system is provided. Respective sets of performance parameters of a first plurality of nodes disposed in a first node group and a second plurality of nodes in a second node group are collected. Service capabilities of the first node group and the second node group are evaluated based on the sets of performance parameters. One node group of the first node group and the second node group is designated as a currently preferred node group in response to evaluation of the service capabilities. The steps of collecting, evaluating, and designating are repeated a plurality of times. The currently preferred node group is designated as an active preferred node group in the event that a sequence of evaluating service capabilities each results in the one node group being designated as the currently preferred node group.