Understanding E911 Device Compliance in a VoLTE/IMS Environment

Eric Chu — Rhode & Schwarz
Delivering E911 services is an FCC requirement and has been a part of legacy services for some time. In order to support emergency services for VoLTE subscribers, many new items need to be considered from a device and network perspective. For example, the transition from a traditional circuit switched (CS) network to an all IP based network utilizing IMS for voice calls; and the addition of new positioning methods such as eCID, OTDOA, and A-GNSS with a new information exchange protocol (LTE Positioning Protocol); all add new dimensions to this mandatory feature that vendors must now ensure via functional and performance compliance of their devices.