er of standards that the IMS profile will follow including but not limited to: 3GPP TS 24.229 for SIP (Session Initiation Protocol) registration procedure. 3GPP TS 33.203 for following authentication procedures. 3GPP TS 26.071, TS 26.090, TS 26.073, and TS 26.104 for supporting AMR including all 8 modes. 3GPP TS 26.114 for meeting jitter requirements. 3GPP TS 23.167 for supporting IMS emergency services. 3GPP TS 24.341for supporting SMS over IP networks. IETF RFC 3550 to support RTP (Real Time Transport Protocol) over UDP. IETF RFC 768 for supporting UDP (User Datagram Protocol). IETF RFC 4867 for supporting AMR payload format. IETF RFC 3095 for adhering to RoHC (Robust Header Compression). 3GPP Evolved Packet System (EPS) OMA-ERELD-DM-V1_2-20070209-A for device management for APN (Access Point Name) config- uration. 3.10 LTE Performance 3GPP TSG RAN WG # 1 had extensively evaluated the LTE performance. The results of these simulations were published in May 2007. LSTI (LTE/SAE Trial Initiative), a consortium of vendors and industry, on the other hand is working on interoperability aspects of EPS. In May 2009, LSTI started cross-vendor Interoperability testing for LTE/SAE. 3.10.1 Simulation Results 3GPP considered two simulation cases in general in the study. The cases are: Case 1: Case lassumes a 2 GHz carrier center frequency, 500m inter-site distance, 10 MHz channel bandwidth, 3 km/hr fading and a full queue traffic model. Case 3: Case 3 assumes a 2 GHz carrier center frequency, 1732 m inter-site distance, 10 MHz channel bandwidth, 3 km/hr fading and a full queue traffic model. Some of the key results of these simulations are presented in this section [30]: Downlink peak data rates for 20 MHz of spectrum allocation, assuming that two long blocks in every sub-frame are reserved for reference signals and control signaling with a code rate of 1, provide the following results which exceeds the target value of 100 Mbps: 172.8 Mbps with 64QAM, 2x2 MIMO and 2 layer transmission. 326.4 Mbps with 64QAM, 4x4 MIMO and 4 l