PUR SS and Paging CSS Collision Handling in Idle Terminals
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Solution Overview
Problem
The current wireless communications systems do not provide a solution for handling collisions between preconfigured uplink resources search space (PUR SS) and paging common search space (Paging CSS) in terminal devices operating in idle mode, leading to inefficiencies and potential delays in data transmission.
Innovation Solution
A method for a terminal device to determine, based on uplink data transmission status and DRX configuration, whether to preferentially monitor PUR SS or Paging CSS, ensuring timely reception of feedback or paging messages, and for a network device to adjust feedback or paging indication accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device monitors both PUR SS and Paging CSS simultaneously, then data transmission efficiency is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic monitoring adjustment where the terminal device adapts its monitoring behavior based on real-time conditions. When PUR SS and Paging CSS collide, the device dynamically switches between monitoring PUR SS (when uplink data transmission is active) and monitoring Paging CSS (when no uplink data is being transmitted), optimizing both efficiency and power consumption based on current operational state
Solution Approach 2:
The patent changes the monitoring parameter (which search space to monitor) based on the collision status and uplink data transmission state. The terminal device adjusts its monitoring configuration dynamically - selecting PUR SS monitoring when uplink data is being transmitted and Paging CSS monitoring when it is not, thereby resolving the contradiction between efficiency and complexity
2Reliability
If the terminal device preferentially monitors PUR SS during collision, then uplink data feedback reception is improved, but paging message reception may be delayed
Solution Approach 1:
The patent uses dynamic switching based on uplink data transmission state. When uplink data is being transmitted, the terminal preferentially monitors PUR SS to ensure reliable feedback reception. When no uplink data is transmitted, it switches to preferentially monitoring Paging CSS to avoid paging delays, thus dynamically balancing reliability and time loss
Solution Approach 2:
The terminal device autonomously determines its monitoring priority based on its own uplink data transmission status without requiring external network instructions. The device self-adjusts its monitoring behavior by checking whether it has uplink data to transmit and making the appropriate monitoring selection, reducing network signaling overhead
3Reliability
If the terminal device preferentially monitors Paging CSS during collision, then paging message reception is improved, but uplink data feedback reception may be delayed
Solution Approach 1:
The patent implements dynamic monitoring adjustment where the terminal switches between preferential monitoring of Paging CSS and PUR SS based on whether uplink data transmission is active. This dynamic approach ensures that when uplink data is transmitted, feedback reception is prioritized, and when it is not, paging message reception is prioritized
4Productivity
If the terminal device wakes up frequently to monitor search spaces, then data transmission efficiency is improved, but power consumption increases
Solution Approach 1:
The patent utilizes the existing periodic DRX wake-up pattern and overlays the collision-based monitoring selection on top of it. The terminal device maintains its periodic sleep-wake cycle but intelligently selects which search space to monitor during wake-up periods, reducing the need for additional frequent wake-ups while maintaining efficiency
Solution Approach 2:
The terminal autonomously determines its monitoring strategy based on its own uplink data transmission status without requiring network signaling. By self-managing the monitoring selection, the device avoids unnecessary wake-ups and reduces power consumption while maintaining data transmission efficiency
Data Source
AI summary
A collision handling method and apparatus are provided. The method includes: A terminal device determines that PUR SS collides with Paging CSS; and the terminal device determines, based on a status of uplink data transmission in PUR associated with the PUR SS and/or a discontinuous reception DRX configuration status of the terminal device, to preferentially monitor the PUR SS or to preferentially monitor the Paging CSS. In the foregoing method, the terminal device determines, based on an actual situation, whether to preferentially monitor the PUR SS or preferentially monitor the paging CSS, so that when the terminal device needs to preferentially monitor the PUR SS, the terminal device can receive a feedback of a network device for PUR transmission in time, and when the terminal device needs to preferentially monitor the Paging CSS, it can be ensured that the terminal device can receive a paging message in time.