Dynamic RAR Reception Termination for Wireless Devices
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Solution Overview
Problem
In wireless communication systems, devices face challenges in efficiently terminating random access response (RAR) reception and decoding, particularly in scenarios with uncoordinated TRPs, leading to increased device power consumption and slower communication setup.
Innovation Solution
The introduction of a priority indicator in the RAR message allows the network to control termination, enabling dynamic use of single or multiple RAR reception methods, and allowing devices to terminate RAR reception based on RAR content, improving energy efficiency and latency performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices continuously monitor and decode all RAR messages from multiple uncoordinated TRPs, then communication reliability is improved, but device power consumption increases
Solution Approach 1:
The patent implements dynamic RAR reception termination where devices can adaptively stop monitoring RAR messages based on reception outcomes. The device terminates RAR reception after successfully decoding a first RAR message or after a maximum number of attempts, transforming the static continuous monitoring into a dynamic process that adapts to actual reception conditions, thereby reducing power consumption while maintaining reliability.
Solution Approach 2:
The device autonomously decides when to terminate RAR reception based on its own decoding results without requiring network control signals. By using self-service, the device independently determines whether to continue or stop monitoring RAR messages, reducing unnecessary power consumption while ensuring communication reliability through autonomous error handling.
2Reliability
If devices monitor all RAR messages from multiple TRPs to ensure successful reception, then communication reliability is improved, but setup time increases
Solution Approach 1:
The patent allows devices to skip continuous RAR monitoring after successfully decoding a first RAR message or after reaching a maximum attempt threshold. By skipping unnecessary monitoring steps, the device reduces setup time while maintaining communication reliability through the termination mechanism that prevents infinite waiting.
3Device complexity
If devices use single RAR reception method, then device complexity is reduced, but adaptability to heterogeneous network environments deteriorates
Solution Approach 1:
The patent implements a universal RAR reception framework that can adapt to different network scenarios (single TRP, multiple coordinated TRPs, multiple uncoordinated TRPs) through a single unified mechanism. The device uses the same basic reception and decoding process but adapts the termination conditions based on the network environment, achieving multi-functionality without increasing device complexity.
4Use of energy by moving object
If devices dynamically terminate RAR reception based on priority indicators, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent uses priority indicators pre-included in RAR messages to guide termination decisions before the device needs to make complex judgments. The network预先 marks RAR messages with priority levels, allowing devices to simply follow the priority guidance rather than independently analyzing network conditions, thereby improving energy efficiency without significantly increasing device complexity.
Data Source
AI summary
A device and method and system for dynamically processing a random access response (RAR) signal to perform wireless communications is disclose. In some embodiments, the device is configured to receive one or multiple random access response (RAR) signals, wherein when the processor receives multiple RAR signals, it selects a RAR signal and responses to the selected RAR signal based on a content of the one or multiple RAR signals and proceeds with subsequent wireless communication using information contained in the selected RAR signal.