Application notification and service selection using in-band signals

摘要

In-band signaling may be used between two stations to determine the capabilities of the stations and/or send actionable information between the stations participating in the call. The in-band signals are indicative that the station that is transmitting the in-band signals can use in-band signals as a conduit to send and/or receive various types of information and are used to probe whether the receiving station can operate similarly. If the receiving station detects and reacts to the in-band signals, then both stations can pass control information and data as well as enhancements between each other, without any need of infrastructure upgrade and/or quality compromise to legacy phone users. Additionally or alternatively, out of band interfaces and watermarking may also be used.

主权项

1. A method of exchanging control signals between a first station in communication with a second station through an infrastructure, comprising:
determining that the first station is equipped to use in-band signaling to exchange control signals with the second station during a voice call, wherein determining that the first station is equipped to use in-band signaling to exchange control signals with the second station comprises determining at the first station that the second station is equipped to use in-band signaling to exchange control signals with the first station by applying a watermark to voice packets, wherein the watermark is interpreted as an in-band signal by the second station if the second station is equipped to use in-band signaling, wherein the first station is a mobile station; exchanging control signals between the first station and the second station using an in-band channel, wherein the control signals comprise control information and data, and wherein the data comprises data from at least one sensor of the first station or the second station; and exchanging device information between the first station and the second station using the control signals through the in-band channel, wherein the device information is not visible to the infrastructure.