Terminal Capability Reporting for Flexible Carrier Aggregation Scheduling
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Solution Overview
Problem
Current uplink and downlink transmission resources in carrier aggregation scenarios are not flexibly configured and scheduled based on the terminal device's capabilities, leading to inefficiencies and increased implementation costs.
Innovation Solution
The terminal device reports its downlink and uplink transmission capabilities, including band combinations and bandwidth parts, allowing the network device to perform flexible scheduling and configuration, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device supports high downlink carrier aggregation capability to enable uplink carrier aggregation, then the uplink transmission capability is improved, but the device complexity and implementation costs increase
Solution Approach 1:
The patent segments the carrier aggregation capability into independent uplink and downlink components. The terminal device can report uplink carrier aggregation capability without being required to support corresponding downlink carrier aggregation capability. This segmentation allows the device to support uplink CA with reduced complexity by not implementing full downlink CA functionality.
Solution Approach 2:
The patent applies local quality by allowing different carrier aggregation capabilities in different directions (uplink vs downlink). The terminal device can have high uplink CA capability while having reduced or different downlink CA capability, optimizing resources based on specific service requirements rather than requiring symmetric capabilities in both directions.
2Ease of operation
If the network device configures the same carrier bandwidth for uplink and downlink transmission, then the configuration is simplified, but the transmission resource flexibility is reduced
Solution Approach 1:
The patent introduces dynamic bandwidth configuration where the network device can independently configure different carrier bandwidths for uplink and downlink transmissions based on service requirements. The terminal device reports its capability information including supported band combinations and carrier bandwidths, allowing the network to dynamically adjust bandwidth allocation rather than being constrained to fixed symmetric configurations.
Solution Approach 2:
The patent enables parameter changes by allowing the network device to modify carrier bandwidth parameters independently for uplink and downlink. The terminal device provides capability information about supported bandwidths, and the network can select and configure appropriate bandwidth parameters based on traffic demands, achieving flexible resource allocation without rigid constraints.
3Device complexity
If the uplink transmission resource depends on the downlink transmission resource configuration, then the resource allocation is simplified, but the scheduling flexibility based on service requirements is reduced
Solution Approach 1:
The patent segments the resource configuration process into independent uplink and downlink components. The terminal device reports uplink capability information separately from downlink capability information, including supported band combinations and carrier bandwidths for each direction. This allows the network device to configure uplink resources independently based on uplink service requirements rather than being constrained by downlink resource configurations.
Solution Approach 2:
The patent implements feedback mechanisms where the terminal device reports its uplink capability information to the network device. Based on this feedback, the network device can make informed decisions about uplink resource allocation and configuration, achieving flexible scheduling that adapts to both terminal capabilities and service requirements without being constrained by downlink configurations.
Data Source
AI summary
Embodiments of this application provide a communication method and apparatus and system configured to execute the method, including receiving first information sent by a network device. The first information is configured for querying for capability information of the terminal device. Sending the capability information of the terminal device to the network device based on the first information. The capability information is configured to indicate a first band combination supported by the terminal device, the first band combination comprises M bands, the capability information comprises second information configured to indicate N downlink band groups in the first band combination, each of the N downlink band groups comprises at least one of the M bands, and both M and N are positive integers.