This multi-part deliverable addresses integrated GNSS based location systems (GBLS) that combine Global Navigation Satellite Systems (GNSS)@ with other navigation technologies@ as well as with telecommunication networks in order to deliver location-based services to users. As a consequence the present document is not applicable to GNSS only receivers. This multi-part deliverable proposes a list of functional and performance requirements and related test procedures. For each performance requirement@ different classes are defined allowing the benchmark of different GBLS addressing the same applications. The present document defines Performance Features applicable to GBLS and specifies the conditions and requirements for these Performance Features.