Position location message flows

摘要

Techniques for initiating and, if desired, modifying location services for Secure User Plane Location (SUPL) and other location architectures are described. To initiate SUPL service, a SUPL Location Platform (SLP) transmits a SUPL initial session message applicable to any service request to a SUPL enabled terminal (SET) and receives in response the service capabilities of the SET. The SLP selects and requests service from the SET consistent with the service capabilities of the SET. The SET may initiate SUPL service by requesting the service capabilities of the SLP. The SET selects and requests service from the SLP that is consistent with the service capabilities received from the SLP. The SET and SLP communicate to determine a position estimate for the SET. The service may be modified before or while communicating between the SET and the SLP to determine a position estimate for the SET.

主权项

1. A method comprising:
receiving from a Secure User Plane Location (SUPL) agent a request for at least one position estimate for a SUPL enabled terminal (SET); transmitting at least one User plane Location Protocol (ULP) service layer message to the SET and receiving at least one ULP service layer message from the SET, wherein ULP service layer messages do not contain any positioning related parameters except positioning protocol identification and positioning protocol messages; transmitting at least one positioning layer message to the SET and receiving at least one positioning layer message from the SET, wherein positioning layer messages conform to a positioning protocol that does not contain any service related parameters; and communicating with the SET to determine the at least one position estimate for the SET; and sending the at least one position estimate to the SUPL agent.