Communication Node Uplink Timer Processing for RRC Inactive State
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Solution Overview
Problem
The existing technologies for wireless communication in the RRC inactive state face challenges in optimizing uplink resources and maintaining uplink synchronization timing during MT-SDT, leading to potential waste of resources and inefficiencies.
Innovation Solution
A method is introduced that involves processing timers differently during MT-SDT and MO-SDT, ensuring uplink synchronization by determining the operating state of timers based on specific triggering conditions of messages, thereby optimizing the use of uplink resources and maintaining timing alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If R17 MO-SDT is used as the uplink response for MT-SDT, then compatibility with R17 standard is achieved, but uplink resources are wasted and uplink synchronization timing optimization is insufficient
Solution Approach 1:
The patent applies dynamics by making the timer processing adaptive based on the triggering condition. When the second message is triggered by a paging message, the first timer is not considered expired and continues to run. When triggered by other conditions, the timer is considered expired. This dynamic adjustment optimizes uplink resource usage while maintaining R17 compatibility.
Solution Approach 2:
The patent changes the parameter of timer expiration determination based on the triggering condition of the second message. By modifying whether the first timer is considered expired according to different trigger types (paging message vs. other triggers), the system optimizes uplink synchronization timing and resource allocation for MT-SDT.
2Device complexity
If timers are processed uniformly during MT-SDT and MO-SDT, then system complexity is reduced, but uplink synchronization timing optimization is insufficient
Solution Approach 1:
The patent segments the timer processing logic into different paths based on the triggering condition of the second message. Instead of a uniform processing approach, the system divides the logic: when triggered by paging message, the first timer continues; when triggered by other conditions, the timer is considered expired. This segmentation enables precise uplink synchronization timing optimization.
3Ease of manufacture
If the first timer is always considered expired after sending the second message, then resource allocation is simplified, but uplink synchronization is compromised
Solution Approach 1:
The patent makes the timer expiration determination dynamic rather than static. The first timer is not always considered expired; instead, its expiration status depends on the triggering condition of the second message. This dynamic approach maintains uplink synchronization reliability while keeping resource allocation relatively simple.
Solution Approach 2:
The system uses feedback from the triggering condition of the second message to determine timer expiration status. By monitoring what triggered the second message (paging message vs. other conditions), the system adjusts timer handling accordingly, ensuring uplink synchronization is maintained while managing resource allocation efficiently.
Data Source
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AI summary
The present application discloses a method and apparatus in a communication node used for wireless communication. The communication node receives a first message; starts a first timer; sends a second message; receives a first target signaling; processes at least one of the first timer or the second timer according to the triggering condition of at least the second message; wherein the first timer is used to determine whether the uplink transmission for the first configured uplink grant is aligned; the second timer is used to determine whether the uplink transmission for the first cell is aligned; the first configured uplink grant is associated with the first cell; the first target signaling is used to determine that the second message is successfully received, or is a MAC CE including at least a timing advance command, or is used to determine that the contention resolution for the first random access process is successfully completed; the second message is sent according to the first configured uplink grant, or is sent in the second random access process.