Access Network Node Multilateration Timing Advance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multilateration methods in wireless communication networks consume excessive power in wireless communication devices due to the need for these devices to acquire and transmit timing advance information to positioning nodes, particularly through RRLP messages, which increases battery consumption and is inefficient.
Innovation Solution
The method involves access network nodes acquiring and transmitting timing advance information directly to positioning nodes via network layer protocol connections, reducing the need for wireless communication devices to perform these tasks, thereby minimizing power consumption and optimizing network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless communication devices acquire and transmit timing advance information to positioning nodes through RRLP messages, then positioning functionality is achieved, but power consumption increases
Solution Approach 1:
The patent introduces access network nodes as intermediaries between wireless communication devices and positioning nodes. These access network nodes acquire timing advance information directly from multiple base transceiver stations and forward it to the positioning node, eliminating the need for wireless devices to perform these acquisition and transmission operations themselves. This intermediary approach maintains positioning accuracy while significantly reducing device power consumption.
2Measurement precision
If wireless communication devices perform multilateration operations independently, then positioning accuracy is maintained, but device complexity and power consumption increase
Solution Approach 1:
The access network nodes serve as intermediaries that collect timing advance information from multiple base transceiver stations and relay it to the positioning node. This shifts the computational burden of multilateration from the wireless communication devices to the network infrastructure, reducing device complexity while maintaining positioning accuracy through the same multilateration calculations performed by the positioning node.
3Loss of information
If timing advance information is transmitted through multiple network interfaces, then information delivery is achieved, but network signaling overhead increases
Solution Approach 1:
The patent merges multiple timing advance information transmissions into a single unified message flow. Instead of transmitting timing advance information separately through multiple interfaces (Lb interface from serving BSS and Abis interface from non-serving BSS), the access network nodes consolidate this information and forward it through a single network layer protocol connection to the positioning node, reducing signaling overhead and network energy consumption while ensuring complete information delivery.
Data Source
AI summary
Embodiments herein relate to a method performed by a first access network node 411, for positioning of a wireless communication device 430. The method comprises obtaining a first and a second information relating to multilateration of the wireless communication device 430. The first information relating to multilateration comprises a first timing advance value, or a first indication of the first timing advance value, associated with the first access network node 411 and the wireless communication device 430, a Temporary Logical Link Identifier (TLLI) corresponding to the wireless communication device 430 and a first identity of a first cell 421, in which first cell 421 the first timing advance was obtained. The method further comprises mapping, based on the TLLI, the associated first and second identities of the first and second cells 421, 422 and the first and second timing advance values to a network layer protocol connection on a first interface 441. The method further comprises transmitting, to a positioning node 413, the first and second timing advance values and the first and second identities of the first and second cells 421, 422. Embodiments herein further relate to corresponding methods in a second access network node 412 and in a positioning node 413.