Patent ID: 9479971
Filing Date: 2016-10-25
CPC Classification: H04L,H04W

Claim Text:
1. A method of controlling a vocoder selection of a wireless device that uses cellular protocols, comprising the steps of: (a) detecting that the wireless device has stopped using voice communications over 4G LTE wideband cellular service through a wireless carrier system; (b) detecting that the wireless device has begun using a cellular protocol for voice communications having a lower bit rate than offered by the 4G LTE wideband cellular service; (c) receiving an instruction from the wireless carrier system at the wireless device identifying a vocoder used with the cellular protocol for voice communications having a lower bit rate than offered by the 4G LTE wideband cellular service; (d) comparing the vocoder identified in the instruction with the vocoder presently used at the wireless device; (e) identifying a vocoder that is optimized for the cellular protocol having a lower bit rate than offered by the 4G LTE wideband cellular service at the wireless device when the vocoder identified in the instruction does not match the vocoder presently used at the wireless device; (f) ending use of the vocoder used with the 4G LTE wideband cellular service; and (g) beginning use of the vocoder identified in step (c).