SCCP Connection Maintenance for Multilateration Timing Advance Positioning

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Solution Overview

Problem

In wireless communication networks, the existing solution for transferring RRLP messages lacks clarity on whether a Multilateration Request has been initiated, leading to premature release of SCCP connections, which can interrupt positioning procedures and result in failed positioning due to incomplete data transfer.

Innovation Solution

Incorporating a mechanism for the positioning node to indicate the type of RRLP message and including a timer in the BSSMAP-LE Connection Oriented Information message to ensure the SCCP connection is maintained until the positioning procedure is completed, allowing the radio access network node to recognize when a Multilateration Timing Advance procedure has started and how long to keep the connection active.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the existing solution for transferring RRLP messages is used, then the positioning procedure can be initiated, but the SCCP connection is prematurely released interrupting the positioning procedure

Engineering Contradiction:

Improvepositioning procedure completionVSAvoidSCCP connection maintenance time

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies preliminary action by including a timer value in the BSSMAP-LE Connection Oriented Information message before the positioning procedure completes. This timer is set in advance to ensure the SCCP connection is maintained for the required duration, preventing premature release and ensuring reliable completion of the positioning procedure.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the SCCP connection is maintained for a longer period, then positioning procedure reliability is improved, but network resource consumption increases

Engineering Contradiction:

Improvepositioning procedure completionVSAvoidnetwork resource consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies dynamics by implementing a timer-based mechanism that dynamically controls the SCCP connection duration. The connection is maintained only for the specific period required by the positioning procedure (as indicated by the timer value), after which it is automatically released. This ensures reliable positioning completion while avoiding unnecessary prolonged connection maintenance that would waste network resources.

Inventive Principle:

Principle #15Dynamics

3Loss of information

If the RRLP message type indication is added, then the radio access network node can recognize Multilateration Request, but the message complexity increases

Engineering Contradiction:

Improvemessage type informationVSAvoidmessage structure

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent applies merging by combining the RRLP message type indication with the existing BSSMAP-LE Connection Oriented Information message structure. Rather than creating a separate message or significantly expanding the existing structure, the indication is integrated into the current message framework, minimizing additional complexity while ensuring that the radio access network node can recognize when a Multilateration Request has been initiated.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10705174B2Radio access network node, positioning node, and methods therein for handling positioning of a mobile station

Publication Date: 2020.07.07 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method performed by a radio access network node is provided. The radio access network node serves a Mobile Station (MS).The radio access network node receives a message from a positioning node, to be forwarded to the MS. The message comprises an indication that said message comprises a command to the MS to perform a Multilateration Timing Advance procedure for determining a position of the MS.