Data Aided Phase Tracking Reference Signals on Multiple Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing phase tracking reference signals (PT-RSs) across multiple layers of a communication link, leading to suboptimal performance and resource utilization in 5G and LTE networks.
Innovation Solution
User equipment (UE) and base stations are enabled to initiate and communicate data-aided PT-RSs on multiple layers, allowing for dynamic request and indication of capabilities, thereby optimizing resource allocation and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data-aided PT-RSs are implemented on multiple layers, then communication efficiency and throughput are improved, but device complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the PT-RS configuration across multiple layers (first layer and second layer) with different characteristics. The first layer uses conventional PT-RS while the second layer uses data-aided PT-RS, allowing independent optimization of each layer without overwhelming complexity in resource management.
Solution Approach 2:
The patent implements dynamic PT-RS configuration where the base station can flexibly allocate resources between conventional and data-aided PT-RS based on real-time channel conditions and UE capabilities. This dynamic adaptation optimizes throughput while managing complexity through conditional configuration rather than fixed complex structures.
2Measurement precision
If PT-RS resources are allocated for multiple layers, then phase tracking accuracy improves, but loss of network resources increases
Solution Approach 1:
The patent applies different PT-RS characteristics to different layers based on local requirements. The first layer uses conventional PT-RS for basic phase tracking, while the second layer uses data-aided PT-RS enhanced with channel state information for improved accuracy, optimizing the balance between precision and resource consumption for each layer's specific function.
Solution Approach 2:
The patent changes the PT-RS parameters dynamically by introducing data-aided modulation techniques and adjusting PT-RS density and timing based on channel conditions. This allows improved phase tracking accuracy through parameter optimization rather than proportional increase in resource allocation.
3Productivity
If UE initiates requests for data-aided PT-RSs, then communication efficiency improves, but ease of operation decreases
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports its capability and channel conditions to the base station, which then autonomously determines the appropriate PT-RS configuration. This feedback loop enables communication efficiency improvements while shielding the UE from direct configuration complexity through network-assisted optimization.
Solution Approach 2:
The base station performs self-service by autonomously configuring PT-RS parameters based on UE capabilities and channel conditions without requiring complex manual setup from the UE side. The UE simply initiates communication, and the network automatically optimizes the PT-RS configuration, maintaining ease of operation while achieving improved efficiency.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit a request, for an uplink transmission or a downlink transmission, for data aided phase tracking reference signals (PT-RSs) on multiple layers of a communication link; and communicate the uplink transmission or the downlink transmission based at least in part on the request. Numerous other aspects are provided.