Multi-bit SR Transmission Across Component Carriers
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Solution Overview
Problem
Current wireless communication networks, particularly in 5G NR, face inefficiencies in scheduling requests (SRs) and buffer status reports (BSRs) due to their limited bit size, which hinders faster and more efficient signaling.
Innovation Solution
The method involves generating and transmitting multi-bit SRs across multiple uplink component carriers, allowing for joint scheduling and improved resource allocation by dividing uplink component carriers into groups and transmitting multi-bit SRs that include a first and second part, with more significant bits on more reliable carriers and less significant bits on less reliable carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-bit SRs are transmitted across multiple uplink component carriers, then the speed and efficiency of SR/BSR signaling is improved, but the device complexity increases
Solution Approach 1:
The patent divides uplink component carriers into multiple groups and transmits different parts of the multi-bit SR on different carrier groups. This segmentation allows parallel transmission of SR information, improving signaling speed while distributing the complexity across multiple simpler carrier transmissions rather than requiring one complex high-capacity carrier.
2Productivity
If uplink component carriers are divided into groups for joint scheduling, then resource allocation efficiency is improved, but the scheduling complexity increases
Solution Approach 1:
Uplink component carriers are segmented into multiple groups that can be scheduled semi-independently. Each group can be managed with its own scheduling logic, reducing the overall scheduling complexity compared to managing all carriers as a single entity, while still achieving improved resource allocation through coordinated multi-carrier transmission.
Solution Approach 2:
The patent implements dynamic scheduling where the allocation of carriers to groups and the assignment of SR parts to carriers can be adjusted based on channel conditions, traffic patterns, and network load. This dynamic approach optimizes resource allocation efficiency while adapting to changing conditions, making the complexity manageable through adaptive rather than static configurations.
3Reliability
If multi-bit SRs are transmitted with more significant bits on more reliable carriers, then signaling reliability is improved, but the transmission complexity increases
Solution Approach 1:
The patent applies local quality by transmitting more significant bits of the SR on more reliable carriers and less significant bits on less reliable carriers. This differential treatment of SR bits based on carrier reliability ensures that critical information is protected by higher-quality transmission channels, improving overall signaling reliability while maintaining manageable transmission complexity through this targeted approach.
Data Source
AI summary
The present disclosure generally relates to a methods, apparatus, and computer readable medium for implementing the methods for transmitting multi-bit SR (SRs) from a user equipment (UE). The UE receive from a base station a radio resource control (RRC) message from the base station. The RRC message may indicate that uplink component carriers (CCs) of the UE are to be assigned to a plurality of uplink CC groups. Upon receipt of the RRC, the UE may assign the uplink CCs to the plurality of uplink CC groups. A multi-bit SR may be generated for each group of the plurality of uplink CC groups. The UE may transmit the multi-bit SR generated for each group of the plurality of uplink CC groups to the base station. multi-bit SR transmission across different CCs may reduce latency in uplink grant and improve data transmission time.