Configured Grant Resource Flexibility in 5G Unlicensed Spectrum
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Solution Overview
Problem
The flexibility of resource configuration in unlicensed spectrums for data transmission is limited, leading to inefficiencies in channel utilization and increased energy consumption, particularly in 5G unlicensed communications systems, where existing methods struggle to provide reliable and flexible time-domain resource allocation for configured grant transmissions.
Innovation Solution
A transmission method where a terminal device receives indication information from a network-side device to transmit data on a first resource for consecutively K times within a configured grant resource period, enhancing flexibility by remapping resources and using bitmaps to indicate available resources, thereby improving resource configuration granularity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional resource configuration methods are used in unlicensed spectrums, then the system structure is simple, but the flexibility of resource configuration is low
Solution Approach 1:
The patent segments the resource configuration by introducing a bitmap structure where each bit corresponds to a specific time-domain resource. This allows flexible indication of available resources without requiring complex reconfiguration of the entire system. The bitmap divides the resource period into discrete units, enabling selective allocation and enhancing adaptability while maintaining manageable complexity through standardized bit mapping.
Solution Approach 2:
The patent implements dynamic resource configuration by allowing the network-side device to adjust the bitmap and resource period according to actual channel conditions and traffic demands. The configured grant transmission mechanism enables dynamic activation and deactivation of resources within the unlicensed spectrum, providing adaptability to changing environmental conditions while maintaining a structured approach through defined configuration parameters.
2Productivity
If resource configuration flexibility is improved through remapping and bitmap indication, then channel utilization is improved, but the system complexity increases
Solution Approach 1:
The patent utilizes parameter changes by modifying the resource indication through bitmap patterns and resource period adjustments. Instead of changing the fundamental transmission structure, the system varies parameters such as which time-domain resources are marked as available in the bitmap, allowing efficient channel utilization through parameter variation while avoiding the complexity of structural reconfiguration.
Solution Approach 2:
The patent employs a copying mechanism where the bitmap structure serves as a template for resource allocation. The network-side device creates resource configurations by copying and modifying the bitmap pattern rather than establishing entirely new allocation schemes. This copying approach enables efficient resource utilization through pattern replication while reducing complexity by reusing proven structural elements.
3Reliability
If consecutive K times transmission is implemented, then transmission reliability is improved, but the time consumption increases
Solution Approach 1:
The patent implements periodic action through the configured grant transmission mechanism where data is transmitted in periodic intervals according to the bitmap indication. The consecutive K times transmission is structured as periodic repetitions within a defined resource period, allowing reliability enhancement through multiple transmission attempts while managing time consumption through controlled periodicity rather than continuous transmission.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining the configured grant transmission structure that allows consecutive transmissions without interruption when resources are indicated as available in the bitmap. The mechanism ensures that once transmission is initiated on valid resources, the consecutive K times transmission proceeds continuously, maximizing useful transmission action while the bitmap pre-identification avoids unnecessary time consumption from resource search and reconfiguration during the transmission sequence.
Data Source
AI summary
This disclosure provides a transmission method, a terminal device, and a network-side device. The method is applied to a terminal device and includes: receiving first indication information from a network-side device, where the first indication information is used to indicate a first resource usable for configured grant transmission within a configured grant resource period; and transmitting first to-be-transmitted data on the first resource for consecutively K times, where K is a positive integer.