Uplink Pathloss Reference Signal Updates for Multi-PL RS Tracking
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Solution Overview
Problem
The existing mobile communication systems face challenges in supporting explosive data traffic, increased transmission rates, a large number of connected devices, low latency, and high energy efficiency, particularly in managing uplink channels and signals, and updating path loss reference signals.
Innovation Solution
The method and apparatus provide a solution for transmitting and receiving uplink channels and signals based on updated path loss reference signals, ensuring that terminals do not exceed the number of path loss reference signals they can track, thereby preventing operational ambiguity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal tracks multiple path loss reference signals simultaneously, then the adaptability and versatility of the wireless communication system is improved, but the device complexity and operational ambiguity increase
Solution Approach 1:
The patent implements dynamic management of path loss reference signal tracking by allowing the terminal to adaptively select and switch between multiple path loss reference signals based on current channel conditions and beam states. The system dynamically updates which reference signals are being tracked, enabling the terminal to handle multiple signals without permanent complexity overhead.
Solution Approach 2:
The patent segments the path loss reference signal tracking into distinct groups or sets, where the terminal tracks a limited number of signals from each group simultaneously. This segmentation prevents the terminal from being overwhelmed by tracking all possible reference signals at once, thereby reducing operational ambiguity while maintaining adaptability.
2Reliability
If the terminal tracks more path loss reference signals, then the coverage and reliability of uplink transmission is improved, but the processing load and energy consumption increase
Solution Approach 1:
The patent applies partial action by having the terminal track only a subset of available path loss reference signals at any given time, rather than all signals. The terminal selectively tracks the most relevant reference signals based on current operational needs, achieving sufficient reliability without the full energy cost of tracking every possible signal.
Solution Approach 2:
The patent implements periodic updating of path loss reference signal tracking, where the terminal periodically reevaluates which signals to track based on changing channel conditions. This periodic approach allows the system to maintain high reliability when needed while reducing energy consumption during stable conditions by maintaining a smaller active tracking set.
3Productivity
If the system supports more connected devices and higher data traffic, then the productivity and capacity of the wireless network is improved, but the resource management complexity and latency increase
Solution Approach 1:
The patent makes the path loss reference signal tracking mechanism universal by designing it to handle multiple functions: it supports both single-beam and multi-beam operations, works for different types of uplink transmissions, and adapts to various terminal capabilities. This multi-functionality allows the same mechanism to serve diverse traffic types and device requirements without requiring separate management procedures for each case.
Data Source
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AI summary
Disclosed are a method and apparatus for transmitting and receiving an uplink in a wireless communication system. The method for transmitting an uplink according to an embodiment of the present disclosure may comprise the steps of: receiving, from a base station, configuration information associated with a pathloss reference signal (PL RS) of the uplink; receiving, from the base station, control information for updating a first PL RS; and transmitting the uplink to the base station, on the basis of an updated second PL RS. PL RSs for all uplinks that refer to the first PL RS may be updated to the second PL RS.