초록 ▼

A telecommunications system and method is disclosed for decreasing the average call setup time in a cellular network by using an Internet Protocol based cellular network. Call information (such as routing information, channel types, etc.) for a particular call initiated by a calling Mobile Station (

A telecommunications system and method is disclosed for decreasing the average call setup time in a cellular network by using an Internet Protocol based cellular network. Call information (such as routing information, channel types, etc.) for a particular call initiated by a calling Mobile Station (MS) can be stored in a call cache within a serving Mobile Switching Center (MSC) to immediately allow the same call to be re-established without tying-up circuits. A call cache identifier (CCI) is assigned to that call cache and passed to the calling MS. When the MSC receives a call from the calling MS, the MSC determines whether a CCI is included with the call. If not, call setup proceeds as normal, and the MSC creates a call cache for the call, assigns a CCI to the call cache and returns the CCI to the calling MS. If a CCI is received with the call, the MSC accesses the call cache associated with the received CCI, and uses the call setup information stored in the call cache to re-establish the call.

대표청구항 ▼

1. A telecommunications system for reducing the call setup time for re-establishing a new call based upon a previous call between two subscribers, at least one of which is located within an internet protocol based cellular network, comprising:a mobile station within said internet protocol based cell

1. A telecommunications system for reducing the call setup time for re-establishing a new call based upon a previous call between two subscribers, at least one of which is located within an internet protocol based cellular network, comprising:a mobile station within said internet protocol based cellular network having a memory therein for storing a call cache identifier associated with a called party number, said mobile station transmitting said call cache identifier along with a call setup message to re-establish said new call to said called party number; a call cache containing call data associated with said previous call between said mobile station and said called party number, said call cache having said call cache identifier associated therewith; and a mobile switching center within said internet protocol based cellular network in wireless communication with said mobile station, said mobile switching center receiving said call setup message and said call cache identifier and accessing said associated call cache to re-establish said new call using said call data associated with said previous call.