Wireless Node DCI Design for Multi-BWP Scheduling Flexibility
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Solution Overview
Problem
In wireless communication systems, the mismatch between indicated and active bandwidth parts (BWPs) during dynamic handover leads to DCI size inconsistencies, especially when multiple cells or BWPs are scheduled, increasing hardware complexity and cost.
Innovation Solution
A method and apparatus that utilize a unified DCI format to indicate multiple BWPs, where the inclusion of additional information depends on a message set, ensuring compatibility and reducing bit waste, while maintaining scheduling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unified DCI format is used to indicate multiple BWPs, then scheduling flexibility is improved, but DCI size alignment complexity increases
Solution Approach 1:
The patent applies universality by designing a unified DCI format that can indicate multiple BWPs across different serving cells, making the same DCI structure applicable to various scheduling scenarios without requiring separate DCI formats for single-cell or multi-cell scheduling
Solution Approach 2:
The patent uses parameter changes by dynamically adjusting the BWP indication field based on the active BWP configuration and message set, where the field indicates different BWPs depending on the current active BWP state and the configured message set, thereby adapting the DCI content to the current communication context
2Adaptability or versatility
If additional first-type information is added to DCI format for second state configurations, then scheduling flexibility is improved, but hardware complexity increases
Solution Approach 1:
The patent applies dynamics by making the DCI content dynamic based on the active BWP configuration and message set, where the BWP indication field is only present when needed (when the active BWP is in the first state and the message set includes second state configurations), thereby reducing hardware complexity while maintaining scheduling flexibility
Solution Approach 2:
The patent uses local quality by applying different DCI configurations to different BWP states and message sets, where the BWP indication field is selectively included based on the specific combination of active BWP state and message set content, rather than always including the same fields
3Ease of operation
If DCI size is reduced for blind decoding, then ease of operation is improved, but information completeness may be compromised
Solution Approach 1:
The patent uses parameter changes by adjusting the DCI size based on the active BWP configuration and message set, where the DCI includes additional first-type information only when necessary (when the active BWP is in the first state and the message set includes second state configurations), thereby reducing blind decoding complexity while maintaining information completeness when needed
Data Source
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AI summary
Disclosed in the present application are a method and apparatus used in a node for wireless communication. The method comprises: a first node receiving a first message set and first DCI, wherein a first configuration of each BWP in at least a first BWP depends on the first message set, and the first DCI indicates the at least first BWP; and in response to receiving the first DCI, operating a wireless signal on the at least first BWP, wherein candidate states of the first configuration comprise a first state and a second state; a traditional DCI format merely indicates one BWP, and the DCI format of the first DCI indicates a plurality of BWPs at most; and whether the first DCI comprises first-type information for the first BWP depends on the first message set. The present application improves the scheduling flexibility of DCI, avoids bit waste, and has good compatibility.