Random Access Response Timeline Relaxation for Reduced Capability UEs
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Solution Overview
Problem
User equipments (UEs) with reduced capabilities face performance and functionality impairments due to inadequate physical uplink control channel (PUCCH) coverage and require relaxed processing timelines for effective random access procedures in wireless communication systems.
Innovation Solution
UEs can request and receive timeline relaxation and PUCCH coverage enhancements during network access procedures, with the base station responding by providing timing offsets and enhanced PUCCH resource configurations, allowing for improved message transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UEs with reduced capabilities use standard processing timelines, then network access procedure efficiency is improved, but UE performance and functionality are impaired due to insufficient processing time
Solution Approach 1:
The patent applies dynamics by making the processing timeline adaptive rather than fixed. The base station dynamically adjusts the random access response window based on UE capability indicators, allowing UEs with reduced capabilities to receive extended processing time while maintaining overall network efficiency. This resolves the contradiction by enabling flexible timeline configuration that accommodates different UE capabilities.
Solution Approach 2:
The patent changes the parameter of processing timeline duration based on UE capability. By introducing capability indicators and adjusting the response window timing accordingly, the system modifies the time parameter to match UE processing capabilities. This allows standard network procedures to work reliably with UEs having reduced capabilities without sacrificing network access efficiency.
2Adaptability or versatility
If UEs with reduced capabilities transmit uplink messages, then communication functionality is improved, but transmission reliability is compromised due to inadequate PUCCH coverage
Solution Approach 1:
The patent introduces an intermediary mechanism where the base station acts as a mediator to provide PUCCH coverage enhancement for UEs with reduced capabilities. The base station identifies UEs needing coverage enhancement through capability indicators and applies specific PUCCH configuration, effectively mediating between the UE's limited capabilities and the requirement for reliable uplink transmission.
Solution Approach 2:
The patent applies local quality by providing enhanced PUCCH coverage specifically for UEs with reduced capabilities rather than uniformly to all UEs. By targeting the coverage enhancement to specific UEs based on their capability indicators, the system improves transmission reliability for affected UEs without impacting overall system efficiency.
3Reliability
If the base station provides extended processing timeline, then UE decoding capability is improved, but network access procedure time is increased
Solution Approach 1:
The patent resolves this time contradiction through dynamic adjustment. The base station extends the processing timeline only when needed, based on UE capability indicators. For UEs with standard capabilities, the normal procedure time is maintained, while only UEs with reduced capabilities receive the extension. This dynamic approach ensures reliable decoding for affected UEs without unnecessarily increasing network access procedure time for the entire system.
Data Source
AI summary
User equipments (UEs) with reduced capabilities may need a relaxed processing timeline relative to standard UEs. The relaxed processing timeline may provide UEs with reduced capabilities an appropriate amount of time (e.g., during a random access procedure) to decode messages from a base station (BS) and/or to prepare uplink messages. Aspects of the disclosure relate to a UE configured to transmit a message to a serving BS, the message including a request for timeline relaxation for transmission of a subsequent message, the message and the subsequent message being associated with a random access procedure. The UE may receive a response message associated with the random access procedure and indicating one or more timing offsets corresponding to the timeline relaxation. The UE may transmit the subsequent message to the serving BS based on the one or more timing offsets indicated by the serving BS. The subsequent message acknowledges the response message.