PDCCH Numerology Resource Separation for Flexible 5G Subband Allocation
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Solution Overview
Problem
Existing 5G communication technologies lack the flexibility to separately configure frequency resources with different numerologies for Physical Downlink Control Channel (PDCCH) and other physical channels, limiting the full utilization of multiple resource sets.
Innovation Solution
The method involves separately configuring sets of frequency resources for PDCCH and other physical channels through distinct signaling, allowing for different subband partitioning and numerology configurations, enabling non-overlapping or overlapping resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If unified subband configuration is used for PDCCH and PDSCH via single signaling, then signaling overhead is reduced, but resource allocation flexibility is limited
Solution Approach 1:
The patent segments the subband configuration into separate configurations for PDCCH and PDSCH. The network device sends first indication information for PDCCH subbands and second indication information for PDSCH subbands separately, allowing independent optimization of control channel and data channel resources without being constrained by unified configuration.
Solution Approach 2:
The patent introduces a new dimension of configuration independence by allowing different subband configurations for different channel types. This enables the system to optimize PDCCH and PDSCH resources along separate configuration dimensions rather than being constrained to a single unified configuration approach.
2Adaptability or versatility
If separate subband configurations are used for PDCCH and PDSCH, then resource allocation flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent implements dynamic subband configuration where the network device can independently adjust PDCCH and PDSCH subband assignments based on varying channel conditions and traffic requirements. This dynamic adaptation allows the system to achieve high resource allocation flexibility while managing signaling overhead through on-demand configuration updates.
3Device complexity
If same numerology is applied to all physical channels, then system complexity is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The patent applies different numerologies (subcarrier spacings) to different physical channels based on their specific requirements. PDCCH can use one numerology optimized for control signaling while PDSCH uses another numerology optimized for data transmission, allowing each channel to operate with locally optimal parameters rather than a single global numerology.
Data Source
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AI summary
Disclosed is a method and apparatus for separately configuring sets of frequency resources for a PDCCH and another physical channel. According to the method, the first and second messages are configured separately to respectively indicate the sets of frequency resources with associated numerologies for the PDCCH and other physical channels.