Ranking Positioning Assistance Data for Broadcast
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Solution Overview
Problem
Existing methods for broadcasting positioning assistance data in LTE systems face challenges with resource limitations, where base stations may not be able to broadcast all requested data due to insufficient system information broadcast capacity, and current solutions either require complex pre-negotiation or trial-and-error approaches.
Innovation Solution
The proposed method involves the E-SMLC providing ranking and grouping information for positioning assistance data blocks, allowing the eNB to determine which blocks to admit or not admit for broadcast based on available resources, using Rank and Concurrent Broadcast ID information to prioritize and group data for efficient broadcasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the base station broadcasts all requested positioning assistance data blocks, then the user equipment receives complete positioning data, but the base station may exceed its system information broadcast capacity
Solution Approach 1:
The positioning assistance data is divided into multiple data blocks that can be selectively broadcast. The base station segments the complete data set into manageable portions and transmits only those that fit within its broadcast capacity constraints, allowing partial data transmission without exceeding system limits.
Solution Approach 2:
Different positioning assistance data blocks are assigned different priorities or qualities. The base station selectively broadcasts data blocks based on their importance levels, ensuring that critical positioning information is transmitted while less critical data may be omitted when broadcast capacity is constrained.
2Productivity
If the base station uses complex pre-negotiation to determine broadcast capacity, then resource allocation is optimized, but the signaling complexity increases
Solution Approach 1:
The base station autonomously determines its broadcast capacity and selectively transmits data blocks without requiring complex pre-negotiation signaling with the network node. The base station self-assesses its resources and makes decisions about which data blocks to broadcast, eliminating the need for elaborate prior coordination.
Solution Approach 2:
The network node provides advance information about positioning assistance data blocks before the actual broadcast occurs. This preliminary data provision allows the base station to prepare its broadcast schedule in advance without requiring complex real-time negotiation, simplifying the overall signaling process.
3Productivity
If the base station uses trial-and-error approaches to determine broadcast capacity, then resource utilization is optimized, but the time required for broadcasting increases
Solution Approach 1:
The base station receives feedback information from the network node about the user equipment's positioning needs and the base station's broadcast capacity. This feedback mechanism enables the base station to immediately adjust its broadcast selection without time-consuming trial-and-error processes, optimizing resource utilization while minimizing broadcasting time.
Solution Approach 2:
The broadcast strategy is made dynamic and adaptable. The base station adjusts its broadcast capacity and data block selection based on real-time conditions and feedback, allowing efficient resource utilization without fixed time-consuming procedures. The system can flexibly respond to changing conditions without requiring extensive pre-planning or iterative testing.
Data Source
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AI summary
At a network node, positioning assistance data blocks are determined to be requested to be broadcasted by a base station to a UE for use by the UE in calculating a position. A message is sent toward the base station with positioning assistance data blocks and corresponding information indicating to the base station that the base station is to admit or not admit for broadcasting positioning assistance data block(s) in response to insufficient resources at the base station to broadcast all the blocks. Indications are received of success or failure of broadcasting the positioning assistance data blocks, the success or failure based on the base station's admitting or not admitting, respectively, the positioning assistance data blocks. The base station determines which positioning assistance data blocks should be admitted or not admitted for broadcast and either broadcasts the admitted ones or does not broadcast the non-admitted ones.