Joint DCI Scheduling for Multi-Channel 5G NR Resource Limits
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Solution Overview
Problem
The emerging wireless communication technologies face challenges in efficiently scheduling multiple service types, particularly in 5G NR networks, due to limited PDCCH resources and the inability to schedule multiple PDSCHs or PUSCHs using a single DCI, leading to resource shortages and ineffective resource allocation.
Innovation Solution
A method for scheduling downlink control information (DCI) that combines multiple member DCIs into a joint DCI, allowing the scheduling of multiple data channels, with flexible configuration of information fields based on shared, independent, and default types, and signaling to inform terminals of the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate DCIs are used to schedule multiple data channels, then each data channel can be scheduled independently, but the scheduling resource overhead increases and PDCCH resources are exhausted
Solution Approach 1:
The patent combines multiple separate DCIs into a single joint DCI that can schedule multiple data channels simultaneously. This merging approach reduces the number of PDCCH resources required while maintaining the ability to schedule multiple PDSCHs or PUSCHs, directly resolving the contradiction between scheduling flexibility and resource overhead
Solution Approach 2:
The joint DCI is designed to perform multiple scheduling functions simultaneously, acting as a universal control message that can allocate resources for multiple different data channels. This multi-functionality allows a single DCI structure to replace what would traditionally require multiple separate DCIs, reducing overall resource consumption
2Quantity of substance
If a single DCI schedules multiple data channels, then scheduling resource overhead is reduced, but the DCI format complexity increases
Solution Approach 1:
The joint DCI format is segmented into distinct functional fields: common fields that apply to all scheduled data channels and specific fields for each individual channel. This segmentation allows the complex scheduling information to be organized in a structured manner, making the format more manageable and easier to process despite the increased information capacity required
Solution Approach 2:
The patent introduces a new dimension to the DCI structure by adding channel identification fields and multi-channel resource allocation parameters. This dimensional expansion allows the single DCI to encode information for multiple channels without creating unmanageable complexity, as the additional dimensions provide organized pathways for information representation
3Adaptability or versatility
If flexible DCI configuration is implemented, then adaptability to different service types is improved, but the complexity of DCI management increases
Solution Approach 1:
The DCI format is designed to be dynamic and configurable, allowing the network to adapt the joint DCI structure to different service requirements such as eMBB, URLLC, or mMTC. This dynamic configuration capability enables the same joint DCI framework to serve multiple service types with different characteristics, achieving versatility without requiring entirely separate scheduling mechanisms for each service
Data Source
AI summary
The present application provides a method and device for scheduling downlink control information. The method for scheduling the downlink control information includes determining joint downlink control information, the joint downlink control information being determined on basis of two or more pieces of member downlink control information. Each piece of member downlink control information corresponds to scheduling of one data channel, and the joint downlink control information is designed to schedule a plurality of data channels corresponding to the two or more pieces of member downlink control information.