RLC Status Report Formats for Extended Wireless Range
Solution Overview
Problem
Existing wireless communication systems face challenges in effectively extending the transmission range of RLC status reports, particularly in dual connectivity environments with varying frequency bands, leading to incorrect assumptions of ARQ feedback and unnecessary resource consumption.
Innovation Solution
Configuring user equipment (UE) with formats for RLC status reporting based on RRC signaling, physical layer, or MAC layer indications to optimize the payload and transmission range, using techniques such as reduced sequence numbers or compressed information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transmits RLC status reports using standard formats with full sequence numbers, then the status reporting is complete and accurate, but the transmission range is limited and resources are consumed inefficiently when UE is outside normal range
Solution Approach 1:
The patent extracts only the essential status information from complete RLC status reports, removing redundant sequence number details when the UE is outside normal transmission range. This allows transmission of critical ARQ feedback (ACK/NACK status) with reduced payload size, extending transmission range while maintaining reliability of the most important feedback information.
Solution Approach 2:
The patent dynamically changes the format parameters of RLC status reports based on UE location and transmission conditions. When UE is outside normal range, it switches from standard formats with full sequence numbers to compact formats with reduced sequence number fields or compressed representations, optimizing transmission range while preserving essential feedback accuracy.
2Loss of information
If the UE uses standard RLC status report formats, then complete status information is transmitted, but payload size is large consuming more resources and reducing transmission efficiency
Solution Approach 1:
The patent extracts and transmits only the most critical status information elements when payload reduction is needed, omitting or compressing less essential sequence number details. This maintains the essential completeness of ARQ feedback while significantly reducing payload size for more efficient resource utilization.
Solution Approach 2:
The patent applies partial action by transmitting a subset of the full status report information when UE is outside normal range or resources are constrained. Instead of transmitting complete status reports with all sequence numbers, it transmits essential ARQ feedback with reduced information, achieving sufficient reliability with lower resource consumption.
3Device complexity
If the system assumes ARQ feedback is received within normal transmission range, then processing is simplified, but incorrect assumptions lead to resource waste when UE is outside range
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with multiple RLC status report formats and establishing criteria for format selection based on UE location and transmission conditions. This allows the UE to autonomously select appropriate compact formats when outside normal range, avoiding incorrect assumptions at the base station and reducing unnecessary retransmissions and resource waste.
Solution Approach 2:
The patent implements feedback mechanisms where the base station can indicate to the UE which format to use for RLC status reports, or the UE autonomously selects formats based on detected transmission conditions. This feedback loop ensures that compact formats are used when appropriate, preventing incorrect assumptions about ARQ feedback reception and reducing resource consumption from unnecessary retransmissions.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive radio resource control (RRC) signaling that indicates to configure the UE with one or more formats for transmitting a radio link control (RLC) status report. The UE may transmit the RLC status report using an indicated format, of the one or more formats or an additional format for transmitting the RLC status report, wherein use of the indicated format is based at least in part on a physical layer indication or a medium access control (MAC) layer indication. Numerous other aspects are described.