Uplink Channel Resource Determination via Subband Allocation
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Solution Overview
Problem
The existing NR system suffers from low resource utilization and poor network performance due to using full carrier or full Bandwidth Part (BWP) as a unit for uplink resource indication, leading to inefficient use of bandwidth.
Innovation Solution
Frequency domain resource information corresponding to multiple subbands is indicated to the UE through high-layer signaling, and specific subbands for uplink data transmission are further indicated through downlink control information, allowing uplink resources to be allocated in units of subbands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If full carrier or full BWP is used as a unit for uplink resource indication, then the system structure is simple, but resource utilization is low and network performance is poor
Solution Approach 1:
The patent divides the full carrier or BWP into multiple subbands as the basic unit for uplink resource indication. This segmentation allows more precise resource allocation, improving resource utilization while maintaining manageable system complexity through standardized subband definitions.
Solution Approach 2:
The patent introduces dynamic indication mechanisms where the base station can flexibly indicate which subbands need uplink resource allocation through downlink control information. This dynamic approach allows the system to adapt to varying traffic conditions and optimize resource utilization without requiring complex reconfiguration.
2Device complexity
If full carrier or full BWP is used as a unit for uplink resource indication, then the configuration is simple, but resource allocation precision is low
Solution Approach 1:
By segmenting the bandwidth into subbands, the patent achieves finer-grained resource allocation precision. Each subband can be independently indicated and allocated, allowing precise matching of uplink resources to actual transmission needs while keeping configuration manageable through hierarchical organization.
Solution Approach 2:
The patent pre-configures subband boundaries and indices through higher layer signaling, establishing a framework before dynamic resource allocation is needed. This preliminary setup enables precise resource indication without adding complexity during the actual allocation process.
3Productivity
If multiple subbands are configured for uplink transmission, then resource utilization improves, but the indication complexity increases
Solution Approach 1:
The patent uses dynamic indication fields in downlink control information to efficiently signal which subbands require uplink allocation. This dynamic mechanism allows the system to activate only the necessary subbands based on current traffic conditions, improving resource utilization while avoiding the complexity of managing all subbands simultaneously.
Solution Approach 2:
The patent applies different indication strategies to different subbands based on their specific requirements. By treating each subband individually in the indication process, the system can optimize resource allocation for each local region while maintaining overall system efficiency through targeted rather than blanket allocation.
Data Source
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AI summary
An uplink channel resource indication and determination method, and a base station, a terminal and a medium. The uplink channel resource indication method comprises: indicating, by means of high-layer signaling and to a UE, frequency domain resource information that corresponds to N sub-bands contained in a current carrier, wherein N is greater than 1; and indicating, by means of downlink control information and to the UE, one or more sub-bands for transmitting uplink data, such that the UE uses frequency domain resources corresponding to the sub-bands for transmitting uplink data to transmit the uplink data on the basis of frequency domain resource information corresponding to the sub-bands for transmitting uplink data. By using the solution, the resource utilization rate and performance of an NR network can be improved.