Notification of ongoing multilateration timing advance (MTA) procedure to a serving GPRS support node (SGSN)

Abstract

The present disclosure describes various techniques for enabling a Base Station System (BSS) to provide a Serving GPRS Support Node (SGSN) with an indication, e.g., in the form of a flag or a timer, within a BSS General Packet Radio Service (GPRS) Protocol (BSSGP) POSITION-COMMAND Protocol Data Unit (PDU) that a target wireless device is to perform a Multilateration Timing Advance (MTA) procedure. The SGSN upon receipt of the BSSGP POSITION-COMMAND PDU with the indication, e.g., in the form of a flag or a timer, can start a timer during which the SGSN will suspend downlink data delivery and paging to the target wireless device while the target wireless device is performing the MTA procedure.

Description

[0001] priority statement [0002] This application claims the benefit of priority to U.S. Provisional Application Serial No. 62 / 453,843, filed February 2, 2017, and U.S. Application Serial No. 15 / 886,616, filed February 1, 2018, for all purposes, Its entire content is hereby incorporated by reference. [0003] Related Patent Applications [0004] This application is related to co-filed U.S. Patent Application No. _______ (P71354-US2) entitled "Notification of Delivery of a RRLPMultilateration Timing Advance Request Message to a Base Station Subsystem (BBS)", the requirements of which were filed on February 2017, respectively Priority benefit of U.S. Provisional Application Serial Nos. 62 / 453,843 and 62 / 456,991 filed on February 2 and February 9, 2017. The entire content of each of these documents is hereby incorporated by reference for all purposes. technical field [0005] The present disclosure relates generally to the field of wireless telecommunications, and more parti...

AI Technical Summary

Problems solved by technology

[0060] Problem 1: While the ready timer 420 is running in the SGSN 112 for a given MS 104, the SGSN 112 does not know whether the SMLC 110 has triggered (per step 4a of Figure 2B) the MS 104 to perform the Multilateration Timing Advance procedure (Note: Regarding Ready timer 420, it should be understood that if MS 104 is in idle mode, then step 1 of Figure 2A is preceded by SGSN 112 sending a paging message to MS 104, and when SGSN 112 receives a paging response message from MS104 Start Ready Timer 420

[0061] Problem 2: Although the ready timer 420 is not running for a given MS 104, the SGSN 112 does not know if the MS 104 is still performing the previously triggered Multilateration Timing Advance procedure

This is a problem because if the MS 104 is currently performing a previously triggered MTA procedure and the ready timer 420 is not running, this means that the MS 104 is not reachable in its current paging area, and therefore, the paging procedure should not be performed by SGSN 112 trigger

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