BATTERY CONSERVATION WITH IDLE MODE SIGNALING REDUCTION

摘要

Systems and methods are provided that may reduce the battery consumption footprint of a user equipment (UE) in a communications network, such as an LTE network. When a UE is in idle mode, when Idle Mode Signaling Reduction (ISR) is active in the communications network, and when the coverage area of the communications network, such as the LTE network, overlaps with the coverage area of one or more legacy radio access technology (RAT) networks, such as 2G and 3G networks, a module within the UE allows the UE to solely monitor paging messages on the legacy RAT network. Allowing the UE to camp on a legacy RAT network instead of an LTE network to monitor for paging messages can result in lower battery consumption levels when compared to the UE camping on the LTE network.

主权项

1. A method, comprising:
camping on a first cell of one of at least two radio access technologies (RATs) while a UE is in idle mode; upon receiving an indication requiring exiting idle mode, selecting one of the RATs based on an event associated with the received indication; and remaining camped on the first cell if the selected RAT is associated with the first cell or reselecting a second cell of the selected RAT to camp on.