Base Station CCE Allocation Power-of-2 REG Bundling
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Solution Overview
Problem
In the new Radio Access Technology (RAT), there is a lack of sufficient study on methods for arranging Control Channel Elements (CCEs) that constitute a search space in a CORESET, leading to variations in reception Signal to Interference and Noise Ratios (SINRs) across symbols.
Innovation Solution
The solution involves allocating downlink control signals to a control channel region constituted by a plurality of CCEs, where the number of resource element groups (REGs) per CCE is a power of 2, and the bundling size indicating the number of REGs included in the REGs that constitute the CCE and arranged in adjacent resource blocks is also a power of 2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CCEs are arranged in a CORESET without specific constraints on REG count and bundling size, then the flexibility of control channel configuration is improved, but variations in reception SINRs occur across symbols making power adjustment difficult
Solution Approach 1:
The patent applies parameter changes by constraining the number of REGs per CCE to be a power of 2 and the bundling size to be a power of 2. These specific parameter values enable uniform distribution of CCEs across symbols, which ensures consistent reception SINRs and simplifies power adjustment while maintaining configuration flexibility through the use of power-of-2 parameters.
Solution Approach 2:
The patent achieves equipotentiality in terms of reception conditions by arranging CCEs such that the number of REGs per CCE and the bundling size are both powers of 2. This creates equal opportunities for signal reception across different symbols, eliminating SINR variations and enabling uniform power adjustment across all CCEs in the CORESET.
2Ease of operation
If the number of REGs per CCE and bundling size are constrained to be powers of 2, then power adjustment across CCEs is simplified, but the flexibility in configuring control channel regions is reduced
Solution Approach 1:
The patent uses parameter changes by limiting REG count and bundling size to power-of-2 values. This constraint simplifies power adjustment operations by creating uniform reception conditions, while the mathematical structure of power-of-2 numbers provides a systematic approach to configuration that manages complexity through regularity and predictability.
Solution Approach 2:
The patent applies segmentation by dividing the control channel region into CCEs with specific power-of-2 numbers of REGs, and further segmenting those into bundles of power-of-2 sized REG groups. This hierarchical segmentation creates a structured, manageable organization that simplifies power adjustment while providing clear configuration rules.
Data Source
AI summary
In a base station, a signal allocating unit allocates downlink control signals (DCI) to a control channel region (CORESET) constituted by a plurality of control channel elements (CCEs), and a transmitting unit transmits the downlink control signals. In this case, the number of resource element groups (REGs) that constitute the CCE is a power of 2, and a bundling size indicating the number of REGs included in the REGs that constitute the CCE and arranged in adjacent resource blocks is a power of 2.