Copyright OPENWAVE 2007 MPC-to-MPC Interface for LBS Control Plane Roaming Steve Howser Principal Product Technologist 18 th January 2007

CONFIDENTIAL © 2007 Openwave Systems Inc. 2 Background TIA-881 specifies an SS7 interface for roaming in CDMA Control Plane Location An alternative is to use an IP interface to support roaming for CDMA Control Plane The Roaming Location Protocol (RLP) is a roaming protocol specified by the Open Mobile Alliance (OMA) that operates over IP RLP operates over HTTP/IP and is defined for use between two logical Location Servers, which map into MPCs in 3GPP2 terminology RLP incorporates authentication and authorization capabilities, and can utilized other security mechanisms available to the HTTP/IP stack The RLP specification is available at the OMA web site

CONFIDENTIAL © 2007 Openwave Systems Inc. 3 Choice of RLP Being purely a protocol, RLP needs an ‘architectural context’ in which it is used. There are currently two architectural contexts in which RLP has been defined for use: –LCS architecture defined by 3GPP for inter-GMLC roaming for 3GPP Control Plane –Roaming for OMA SUPL for both 3GPP and 3GPP2 User Plane. This proposal introduces a 3 rd ‘architectural context’ in which RLP can be utilized for CDMA Control Plane Roaming.

CONFIDENTIAL © 2007 Openwave Systems Inc. 4 RLP proposal Use the Standard Roaming Location Service of RLP –SYNChronous mode only –Utilizes two messages:  Standard Roaming Location Immediate Request (SRLIR)  Standard Roaming Location Immediate Answer (SRLIA) Interoperability requires: –Definition of how existing RLP parameters are utilized –Message extensions to carry parameters not supported in RLP such as:  Electronic Serial Number (ESN)  An additional mobile identifier (for MDN or MIN)  Mobile Position Capability (MPCAP)  Serving MSC Point Code/SubSystem Number (PC_SSN)

CONFIDENTIAL © 2007 Openwave Systems Inc. 5 Example Signaling Flow

CONFIDENTIAL © 2007 Openwave Systems Inc. 6