Terminal Multi-Carrier Scheduling Configuration
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Solution Overview
Problem
The challenge in wireless communication systems is to perform multi-carrier scheduling using single control information, where it is unclear which fields in the Downlink Control Information (DCI) should be configured in common for all carriers or for each carrier individually.
Innovation Solution
A terminal is equipped with a control unit that determines whether a field in the control information for multi-carrier scheduling is configured in common or for each carrier based on a specific condition, and a reception unit to receive the control information from a base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-carrier scheduling is performed using single control information, then the scheduling efficiency and system capacity are improved, but it becomes unclear which fields should be configured in common or for each carrier, increasing the complexity of configuration management
Solution Approach 1:
The DCI fields are segmented into two categories: common fields (configured once for all carriers) and individual fields (configured separately for each carrier). This segmentation resolves the contradiction by providing a structured approach to multi-carrier scheduling configuration, reducing management complexity while maintaining scheduling efficiency.
Solution Approach 2:
The patent introduces a universal configuration mechanism where certain DCI fields can be configured in common across multiple carriers through a single configuration parameter. This multi-functionality allows the same configuration structure to serve both common and individual carrier scheduling needs, improving efficiency without proportionally increasing complexity.
2Adaptability or versatility
If all fields in DCI are configured for each carrier individually, then the scheduling flexibility and adaptability are improved, but the control information size and processing overhead increase
Solution Approach 1:
The patent applies local quality by allowing different DCI fields to have different configuration granularities appropriate to their specific needs. Fields requiring high flexibility are configured individually per carrier, while fields with uniform characteristics across carriers are configured commonly, optimizing the balance between flexibility and information size.
Solution Approach 2:
Instead of configuring all fields individually for every carrier, the patent uses partial action by identifying and configuring only the necessary fields on an individual carrier basis, while leaving other fields to be inherited from common configuration. This reduces control information size while maintaining adequate scheduling flexibility.
3Quantity of substance
If all fields in DCI are configured in common for all carriers, then the control information size is reduced and processing overhead is decreased, but the scheduling flexibility and carrier-specific optimization are reduced
Solution Approach 1:
The patent introduces a dynamic configuration mechanism where the terminal can adaptively determine the configuration mode (common or individual) for each DCI field based on carrier characteristics and scheduling requirements. This dynamics allows the system to optimize between control information size and scheduling flexibility in real-time.
Solution Approach 2:
The patent enables parameter changes by allowing the configuration state of DCI fields to be switched between common and individual modes based on specific conditions or indications. This parameter flexibility resolves the contradiction by allowing the system to adapt the configuration granularity to match the actual scheduling needs of different carriers.
Data Source
AI summary
A terminal includes: a control unit configured to determine whether a field included in control information for performing multi-carrier scheduling is configured for each of carriers to be scheduled or is configured in common for the carriers to be scheduled, based on a condition; and a reception unit configured to receive the control information from a base station. The reception unit receives each of the carriers to be scheduled by the control information, based on the determination.