GEO-Mobile Radio Interface Specifications (Release 3); Third Generation Satellite Packet Radio Service; Part 4: Radio interface protocol specifications; Sub-part 7: Mobile Radio Interface Signalling Layer 3 General Aspects; GMR-1 3G 24.007 (V3.3.1)
The present document defines the architecture of Layer 3 and its sublayers on the GeoMobile (GMR-1) Air Interface. Most of the procedures defined for Layer 3 are similar to those defined in 3GPP system as defined in TS 124 007 [5]. Only significant differences are described here.