Abstract: Several different methods are described herein for reducing the setup time needed to establish a media flow (e.g., packet-based voice communications) between two devices (e.g., two GPRS UEs, GPRS UE/server, GPRS UE/WLAN UE). In one embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned resources—reserve at INVITE. In another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve at ANSWER. In yet another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve according to most demanding codec properties. All of these methods and in particular a UE and PS-CN may use the network initiated ISPCA method to reduce the setup time needed to assign packet-based bearers which are required to establish the media flow.

Abstract: Several different methods are described herein for reducing the setup time needed to establish a media flow (e.g., packet-based voice communications) between two devices (e.g., two GPRS UEs, GPRS UE/server, GPRS UE/WLAN UE). In one embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned resources—reserve at INVITE. In another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve at ANSWER. In yet another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve according to most demanding codec properties. All of these methods and in particular a UE and PS-CN may use the network initiated ISPCA method to reduce the setup time needed to assign packet-based bearers which are required to establish the media flow.

Abstract: Several different methods are described herein for reducing the setup time needed to establish a media flow (e.g., packet-based voice communications) between two devices (e.g., two GPRS UEs, GPRS UE/server, GPRS UE/WLAN UE). In one embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned resources—reserve at INVITE. In another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve at ANSWER. In yet another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve according to most demanding codec properties. All of these methods and in particular a UE and PS-CN may use the network initiated ISPCA-method to reduce the setup time needed to assign packet-based bearers which are required to establish the media flow.

Abstract: Several different methods are described herein for reducing the setup time needed to establish a media flow (e.g., packet-based voice communications) between two devices (e.g., two GPRS UEs, GPRS UE/server, GPRS UE/WLAN UE). In one embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned resources—reserve at INVITE. In another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve at ANSWER. In yet another embodiment, the method minimizes the setup time for establishing IMS telephony using pre-provisioned radio resources—reserve according to most demanding codec properties. All of these methods and in particular a UE and PS-CN may use the network initiated ISPCA method to reduce the setup time needed to assign packet-based bearers which are required to establish the media flow.

Abstract: The present invention provides a system and method for instantly providing a packet-switched connection, e.g., GPRS, to a portable computer of an existing mobile station. According to exemplary embodiments of the present invention, a GPRS identifier is added to a modem's standard AT dial command in order to indicate that GPRS is requested. The modification to the modem's dial command is made in such a way so as to be compliant with the well known syntax rules set forth for that command. By modifying the modem's AT command set accordingly, an existing mobile station's portable computer will be capable of instantly supporting GPRS irrespective of the off-the-shelf operating system in use in the portable computer.