Splitting Positioning State Information Between UCI and MAC-CE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently reporting positioning state information (PSI) due to high latency and limited capacity in existing signaling methods, particularly in 5G networks, where low-layer signaling is needed to enhance positioning procedures.
Innovation Solution
A method for a user equipment (UE) to perform positioning procedures with transmission-reception points (TRPs) and transmit positioning reports via a combination of uplink control information (UCI) and medium access control control elements (MAC-CEs), determining the optimal signaling method based on factors like signal strength, payload size, and power headroom to minimize latency and maximize reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning reports are transmitted using existing signaling methods, then positioning information can be reported, but reporting latency is high and reliability is limited
Solution Approach 1:
The patent implements dynamic selection between UCI and MAC-CE signaling methods based on real-time conditions such as payload size, power headroom, and scheduling status. The UE determines the optimal signaling path adaptively, switching between low-layer (UCI) and medium-layer (MAC-CE) signaling to minimize latency while ensuring reliable delivery of positioning reports
Solution Approach 2:
The patent segments the positioning state information into different components that can be transmitted through different signaling paths. By dividing the positioning report into manageable parts and selecting appropriate transmission methods for each, the system achieves both low latency and high reliability simultaneously
2Loss of time
If positioning reports are transmitted via UCI, then latency is reduced, but payload capacity is limited
Solution Approach 1:
The system dynamically adjusts the signaling method based on payload size requirements. When positioning reports are small, UCI is used for low latency; when reports exceed UCI capacity, the system switches to MAC-CE which offers larger payload capacity, thus adaptively resolving the contradiction between latency and capacity
3Quantity of substance
If positioning reports are transmitted via MAC-CE, then payload capacity is increased, but signaling complexity increases
Solution Approach 1:
The patent segments the signaling approach by using UCI for simple, time-critical positioning updates and reserving MAC-CE for comprehensive positioning reports requiring larger capacity. This segmentation reduces overall signaling complexity by avoiding unnecessary use of complex MAC-CE procedures for simple cases
4Productivity
If flexible splitting of positioning reports is implemented, then reporting efficiency is improved, but determination complexity increases
Solution Approach 1:
The UE autonomously determines the optimal signaling method by evaluating its own state (power headroom, buffer status, scheduling conditions) without requiring complex network-side determination. This self-service approach improves reporting efficiency while keeping the determination process manageable through standardized evaluation criteria
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) performs at least one positioning procedure with at least one transmission-reception point (TRP), and transmits a positioning report for the at least one positioning procedure via first low layer signaling or both the first low layer signaling and second signaling different than the first low layer signaling.