Abstract: Systems and methods described herein provide improved access to wireless devices in Power Saving Mode (PSM) and extended Discontinuous Reception (eDRX) sleep. A mobility management entity (MME) receives a mobile-terminated (MT) short message service (SMS) paging request with a size parameter for a corresponding short message. The MME determines if the wireless device is sleeping in PSM or eDRX mode, and, if so, uses the size parameter to determine if criteria are met for local buffering by the MME. If local buffering criteria are met, the MME locally buffers the short message until a next wireless device wake-up time. The MME also receives and processes requests to implement non-standard wake-up times for individual wireless devices in PSM sleep.

Abstract: A method may include receiving a request from an Internet Protocol Multimedia Subsystem, where the request relates to an Internet Protocol Multimedia Subsystem service associated with user equipment. The method may further include obtaining location or time zone information associated with the user equipment from an access network; providing the obtained location or time zone information to the Internet Protocol Multimedia Subsystem; and providing the obtained location or time zone information to an on-line or off-line charging system.