Multi-Carrier Scheduling DCI for Lower 5G Control Overhead
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling multiple carriers in a single cell, leading to increased control overhead and inefficiencies in network resource management, particularly in 4G and 5G networks.
Innovation Solution
Implementing a method for multi-cell scheduling with a single scheduling DCI format (0_X/1_X) that allows simultaneous scheduling of multiple carriers, maintaining DCI size budgets and blind decode/CCE limits across cells, and enabling self-carrier, cross-carrier, and multi-carrier scheduling mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single-cell scheduling is used for each carrier, then scheduling flexibility is maintained, but control overhead increases significantly
Solution Approach 1:
The patent merges multiple single-cell scheduling DCIs into a single multi-cell scheduling DCI that can schedule multiple carriers simultaneously. This combines the scheduling function across multiple cells, reducing the number of separate DCI messages and associated control overhead while maintaining the ability to schedule each carrier independently through appropriate field configurations.
Solution Approach 2:
The multi-cell scheduling DCI is designed to perform multiple scheduling functions across different carriers within a single message. By making the DCI universal and multi-functional, it can adapt to schedule one or multiple carriers depending on configuration, thereby reducing control overhead while preserving scheduling flexibility through configurable fields.
2Device complexity
If multi-cell scheduling with single DCI is implemented, then control overhead is reduced, but scheduling precision for individual carriers decreases
Solution Approach 1:
The multi-cell scheduling DCI incorporates segmented fields that can be independently configured for each scheduled carrier. These segmented fields allow precise control of individual carrier parameters (such as resource allocation, modulation and coding scheme) while being contained within a single unified DCI structure, thus maintaining scheduling precision without requiring separate DCIs.
Solution Approach 2:
The patent applies local quality by allowing different parameter configurations and field structures within the same multi-cell scheduling DCI for different carriers. Each carrier can have customized scheduling parameters appropriate to its specific requirements, enabling precise local control while using a unified scheduling mechanism.
3Productivity
If multiple carriers are scheduled simultaneously, then resource utilization efficiency improves, but difficulty of managing scheduling parameters increases
Solution Approach 1:
The multi-cell scheduling DCI employs dynamic field structures that can be activated or deactivated based on the number and type of carriers being scheduled. The DCI format dynamically adapts its content to match the scheduling requirements, enabling efficient simultaneous scheduling of multiple carriers while automatically managing parameter complexity through conditional field inclusion and configuration.
Data Source
AI summary
The present document describes methods, system, and devices for wireless communication, and more specifically, for scheduling mechanism with multiple carriers in one cell. One method is performed by a wireless communication device and includes receiving a configuration comprising scheduling information for a carrier in a cell, wherein the cell comprises a plurality of carriers; and deriving a set of parameters of the configuration for the carrier. Another method is performed by a wireless communication node, and includes determining a set of parameters of a configuration for a carrier in a cell, wherein the cell comprises a plurality of carriers; and sending the configuration comprising scheduling information for the carrier.