Random Access Adjustment via Positioning Reference Signal Measurements
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in enhancing random access procedures due to limitations in downlink (DL) signal processing and uplink (UL) positioning reference signals, which affect measurement accuracy and adjustment for random access in user equipment (UE) and base stations.
Innovation Solution
The method involves receiving and processing DL signals containing positioning reference signals (PRS), synchronization signal blocks (SSB), system information blocks (SIB), and channel state information reference signals (CSI-RS) to perform measurements for pathloss or propagation delay, enabling adjustments for random access procedures in UE and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning reference signals and measurements are integrated into random access procedures, then measurement accuracy and random access adjustment are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent combines positioning reference signal processing with random access procedures by integrating DL PRS reception, UL PRS transmission, and measurement functions into the existing random access framework. This merging allows measurement accuracy to improve while avoiding the need for completely separate positioning infrastructure, thus managing device complexity.
Solution Approach 2:
The positioning reference signals are designed to serve multiple functions: they enable positioning measurements, support random access procedures, and provide channel state information. This multi-functionality improves measurement accuracy while reducing the need for additional dedicated signaling, thereby controlling device complexity.
2Manufacturing precision
If multiple DL signals and UL PRS are processed for measurements, then random access adjustment accuracy is improved, but processing time and energy consumption increase
Solution Approach 1:
The base station pre-configures positioning reference signal resources and measurement parameters before random access occurs. This preliminary setup allows the UE to efficiently process multiple DL signals and UL PRS during random access without excessive processing time, as the measurement framework is already established.
Solution Approach 2:
The patent enables continuous positioning measurement and random access procedure execution by maintaining ongoing DL PRS reception and UL PRS transmission. This continuity ensures that measurements are always available for random access adjustment without requiring repeated setup phases, reducing overall processing time.
Data Source
AI summary
Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method may be performed by a wireless device such as a user equipment (UE) and generally includes: receiving at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.