Abstract: This invention relates to telecommunications, and in particular, to a Rich Communication Suite (RCS) and RCS-e (“e” for enhanced) messaging infrastructure within a network without the need to deploy an IP Multimedia Subsystem (IMS) core within the network.

Abstract: This invention relates to telecommunications, and in particular, to a Rich Communication Suite (RCS) and RCS-e (“e” for enhanced) messaging infrastructure within a network without the need to deploy an IP Multimedia Subsystem (IMS) core within the network.

Abstract: This invention relates to telecommunications, and in particular, to a Rich Communication Suite (RCS) and RCS-e (“e” for enhanced) messaging infrastructure within a network without the need to deploy an IP Multimedia Subsystem (IMS) core within the network.

Abstract: Methods and apparatus for reducing the traffic volume associated with home location register queries used to determine a subscriber's location in a wireless telecommunications network or in an IP multimedia subsystem network. A query reduction mechanism (QRM) is in communication with a short message service center (SMSC) and with a home location register (HLR) to provide a destination location to send an incoming message. The SMSC sends a lookup query to the QRM and the QRM sends a location response back to the SMSC. The destination location and the message are then sent to the mobile switching center for transmission of the message to the destination mobile device. The QRM includes a route cache with location information, route caching logic, and a passive monitor to receive subscriber location updates.