US 2004/0203802 A1 · Process for optimizing speech coding as a function of end user device characteristics

Abstract

In response to a mobile subscriber station to mobile subscriber station call, the intelligent coding process transmits data during the call setup process from the originating mobile switching center to the mobile switching center that serves the called party, indicative of the characteristics of the originating end user device and the coding processes in use at the originating end user device. The intelligent coding process also signals the inter-mobile switching center network to indicate that this call connection does not require the use of a vocoder in the network transmission of the call. The inter-mobile switching center trunks then pass the coded data received from the codec in the originating mobile subscriber station to the mobile switching center that serves the called party, where the coded data is transmitted to the mobile subscriber station of the called party. The codec in this mobile subscriber station performs the speech decoding necessary to transmit the data to the called party.

Claims12

Dependent claims

A method, executing in a wireless communications network, for establishing a call connection between a calling party's mobile subscriber station served by a first Mobile Switching Center and a called party's mobile subscriber station served by a second Mobile Switching Center, comprising:

determining, in response to a call initiation by a calling party's mobile subscriber station, whether the called party is served by a mobile subscriber station;
selecting a call routing via trunks that interconnect said first Mobile Switching Center and said second Mobile Switching Center;
and
inserting a parameter into a call setup message transmitted by said first Mobile Switching Center to said second Mobile Switching Center to indicate that the call connection is a mobile to mobile call connection and the identity of a codec used for said calling party's mobile subscriber station.

1 more element

determining, in response to a call initiation by a calling party's mobile subscriber station, whether the called party is served by a mobile subscriber station;
selecting a call routing via trunks that interconnect said first Mobile Switching Center and said second Mobile Switching Center;
inserting a parameter into a call setup message transmitted by said first Mobile Switching Center to said second Mobile Switching Center to indicate that the call connection is a mobile to mobile call connection and the identity of a codec used for said calling party's mobile subscriber station;
paging said called party's mobile subscriber station to determine codec characteristics of said called party's mobile subscriber station;
comparing an identity a codec used for said called party's mobile subscriber station with an identity of a codec used by said calling party's mobile subscriber station;
and
transmitting signals received over said call connection to said called party's mobile subscriber station if said codec identities match.

4 more elements

Dependencies are inferred from the claim text.

Process for optimizing speech coding as a function of end user device characteristics

Life of this patent

Process for optimizing speech coding as a function of end user device characteristics

Life of this patent

Abstract

Claims12