Patent ID: 9112683
Filing Date: 2015-08-18
Classification: H04L,H04W

Abstract:
1. A method of maintaining session state in a Secure User Plane Location (SUPL) enabled system, the method comprising: modifying at least one parameter of a session message to include state data necessary to maintain session state of a triggered session; transmitting a request to a SUPL Enabled Terminal (SET) over a given communication channel to initiate the triggered session, the request comprising the session message having the at least one modified parameter, enabling the state data to be stored at the SET; closing the given communication channel after the session message is received at the SET; clearing the state data from memory of the SUPL enabled system in response to the closing, wherein the SET maintains the only copy of the state data; receiving a triggered message from the SET over another communication channel in response to occurrence of a trigger event detected by the SET during the triggered session, the triggered message comprising the stored state data; re-establishing the triggered session using the state data received in the triggered message; receiving a SUPL POS message from the SET, the SUPL POS message including position data indicating a location of the SET; and setting an estimated position of the SET using the position data in the SUPL POS message.