Abstract:
A location server, such as a Serving Mobile Location Center (SMLC) or E-SMLC and mobile terminal selectively implement the reliable transport mechanism used in, e.g., LPP or LPPe protocols, thereby decreasing unnecessary delays. The reliable transport mechanism may be selectively implemented by not requiring an acknowledgement for specific messages, such as an unsolicited assistance data message. When assistance data is solicited, however, the responsive assistance data message includes an acknowledgement request as per the reliable transport mechanism.
Abstract:
Techniques disclosed herein provide for enhanced LTE Positioning Protocol (LPP) Reliable Transport where the receiver of an LPP message sends a non-piggybacked acknowledgement. An example method for executing on a mobile device a protocol session with a location server includes sending a first protocol session message associated with a first protocol session to the location server, entering a wait-for-acknowledgement state in which uplink transmissions from the mobile device to the location server are suspended while waiting for an acknowledgement from the location server in response to the first protocol session message, receiving a second protocol session message associated with a second protocol session which is not an acknowledgement to the first protocol session message but includes information requested in the first protocol session message; exiting the wait-for-acknowledgement state responsive to receiving the second protocol session message; and performing an action using the information received in the second protocol session message.
Abstract:
A location server, such as a Serving Mobile Location Center (SMLC) or E-SMLC and mobile terminal selectively implement the reliable transport mechanism used in, e.g., LPP or LPPe protocols, thereby decreasing unnecessary delays. The reliable transport mechanism may be selectively implemented by not requiring an acknowledgement for specific messages, such as an unsolicited assistance data message. When assistance data is solicited, however, the responsive assistance data message includes an acknowledgement request as per the reliable transport mechanism.