1. Page 1 Remote Transaction Protocol LBS Roaming Meeting, Denver January 18, 2007 Remote Transaction Protocol LBS Roaming Meeting, Denver January 18, 2007

2. Page 2 Remote Transaction Protocol Update Based on the agreement from the San Francisco LBS Roaming Summit QUALCOMM created a draft protocol spec for the Remote Transaction Protocol for PDE interconnection Protocol Spec is on the LBS Wiki Page Interested parties are encouraged to review and comment Ideally the specification could be released as final at the March CDG IRT

3. Page 3 Sample Call Flow 1

4. Page 4 Sample Call Flow 2

5. Page 5 General Packet Format

6. Page 6 Remote Transaction Protocol Update H-PDE ID / V-PDE ID Identify the H-PDE and V-PDE The H-PDE sets these parameters in the request package The PDE addresses are configurable and are set by mutual agreement among the carriers Session ID Identifies the transactions associated with an IS-801 session at the H-PDE The value is set by the H-PDE and reflected by the V-PDE in the response Transaction ID Identifies the individual transaction The value is set by the H-PDE and reflected by the V-PDE in the response The transaction ID must uniquely identify the transaction at the H-PDE It will be used in combination with the H-PDE identity to identify the transaction at the V-PDE interface

7. Page 7 Messages Request messageMessage ID Request Assistance Data0000 0001 Request Location Estimate0000 0010 Keep Alive Request0000 0011 Table 4 ‑ 1: Message ID values for messages from H-PDE to V-PDE Response messageMessage ID Provide Assistance Data0000 0100 Provide Location Estimate0000 0101 Reject0000 0110 Keep Alive Response0000 0111 Table 4 ‑ 2: Message ID values for messages from V-PDE to H-PDE

8. Page 8 Request Messages ParameterM/OTag valueReference ASST_TYPEM1100 00014.5.1 LOC_ESTO1100 00104.5.2 Table 4 ‑ 6:Request assistance data parameters ParameterM/OTag valueReference LOC_REQM1100 01004.5.4 SYSTEM_PARAMO1100 00114.5.3 PPMO1100 01014.5.5 PRMO1100 01104.5.6 LOC_ESTO1100 00104.5.2 TIME_OFFSETO1100 01114.5.7 Table 4 ‑ 7:Request location estimate parameters

9. Page 9 Response Messages ParameterM/OTag valueReference BS_CAPO1100 10004.5.8 GPS_ACQ_DATAO1100 10014.5.9 GPS_LOC_ASST_SPHO1100 10104.5.10 GPS_LOC_ASST_CARTO1100 10114.5.11 GPS_SENS_DATAO1100 4.5.12 BS_ALMANACO1100 11014.5.13 GPS_ALMANACO1100 11104.5.14 GPS_EPHEMERISO1100 11114.5.15 GPS_NAV_MES_BITSO1101 00004.5.16 GPS_ALMANAC_CORO1101 00014.5.17 GPS_SAT_HEALTHO1101 00104.5.18 ASST_DATA_REJECTO1101 01014.5.21 Table 4 ‑ 8:Provide assistance data parameters ParameterM/OTag valueReference LOC_ESTM1100 00104.5.2 Table 4 ‑ 9:Provide location estimate parameters

10. Page 10 Next Steps Group Review of the protocol specification Conference calls as needed Final approval by March CDG IRT