Uplink-Based Mobility With Dynamic Pilot Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing user equipment (UE) mobility without involving the UE in mobility decisions, particularly in next-generation networks where uplink-based medium access control (MAC) layer is supported.
Innovation Solution
A network provides a common set of resources for UEs to transmit pilot signals initially, and dedicated resources are allocated based on UE activity levels, allowing UEs to switch between these resource configurations as needed for efficient mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the network uses common resources for all UEs to transmit pilot signals, then device complexity is reduced and ease of operation is improved, but measurement precision deteriorates due to signal interference from multiple UEs sharing the same resources
Solution Approach 1:
The patent segments the resource allocation into two distinct parts: common resources shared by all UEs for initial access and basic pilot transmission, and dedicated resources allocated to specific UEs for enhanced pilot signal transmission. This segmentation allows the network to reduce overall management complexity while maintaining measurement precision through dedicated resource allocation when needed.
2Measurement precision
If the network allocates dedicated resources to each UE for pilot signal transmission, then measurement precision is improved, but device complexity increases due to individual resource management for each UE
Solution Approach 1:
The patent implements dynamic resource allocation where UEs can switch between common and dedicated resources based on their current operational state, traffic activity level, and mobility requirements. This dynamic approach allows the system to maintain measurement precision by allocating dedicated resources only when necessary, rather than permanently, thereby reducing overall network management complexity.
3Adaptability or versatility
If UEs are involved in mobility decisions, then adaptability is improved, but ease of operation deteriorates due to increased UE processing requirements and complexity
Solution Approach 1:
The patent introduces the pilot signal as an intermediary mechanism that carries mobility information from the UE to the network without requiring the UE to directly participate in mobility decision-making. The network measures the pilot signal and makes mobility decisions based on these measurements, thereby maintaining adaptability while preserving UE operation simplicity.
4Ease of operation
If the network makes mobility decisions transparently without UE involvement, then ease of operation is improved, but adaptability deteriorates as the UE cannot influence mobility decisions
Solution Approach 1:
The patent implements feedback mechanisms where the UE provides information about its operational state, traffic activity level, and channel conditions through pilot signal transmission. The network uses this feedback to make informed mobility decisions that are adapted to the specific UE's needs, thereby maintaining both ease of operation and adaptability through a closed-loop system.
Data Source
AI summary
Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes identifying, while the UE is in a connected mode with a network, a radio resource configuration of the UE, selecting a dedicated set of resources for the UE or a common set of resources for a plurality of UEs based at least in part on the identified radio resource configuration, and transmitting a pilot signal to the network using the selected set of resources. Methods for wireless communication at a network access device and a network access device controller are also described.