Cross-Carrier Search Space Configuration for NR Cell Scheduling
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Solution Overview
Problem
In a New Radio (NR) system, a terminal device located in multiple cells cannot be scheduled by other cells, limiting the flexibility and efficiency of communication.
Innovation Solution
Configuring a search space that allows cross-carrier scheduling, enabling a first cell to schedule a second cell, and allowing the second cell to also be scheduled by the first cell, thereby expanding the scheduling possibilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal device uses self-scheduling for each cell, then the scheduling is simple and reliable, but the scheduling flexibility and efficiency are limited
Solution Approach 1:
The search space configuration is designed to support multiple scheduling modes (self-scheduling and cross-carrier scheduling) within the same cell. The network device can configure search spaces that are applicable to both scheduling types, allowing the system to universally handle different scheduling requirements without requiring separate dedicated search spaces for each mode.
Solution Approach 2:
The patent introduces dynamic switching between self-scheduling and cross-carrier scheduling modes based on network conditions and requirements. The terminal device can adaptively adjust which scheduling mode to use by detecting downlink control information in configured search spaces, allowing the system to dynamically optimize scheduling flexibility while managing complexity.
2Productivity
If cross-carrier scheduling is implemented, then the scheduling efficiency is improved, but the configuration complexity increases
Solution Approach 1:
The patent merges the configuration of search spaces for both self-scheduling and cross-carrier scheduling into a unified configuration process. The network device configures search spaces that can serve dual purposes, and the terminal device processes both scheduling types through integrated detection mechanisms, reducing the overall configuration complexity while maintaining high scheduling efficiency.
Solution Approach 2:
The network device performs preliminary configuration of search spaces before actual scheduling operations begin. By pre-configuring the search space parameters, associations with serving cells, and detection rules, the system prepares the terminal device in advance to efficiently handle cross-carrier scheduling without encountering complexity issues during runtime operations.
3Productivity
If a cell can only be scheduled by itself, then the scheduling control is simple, but the communication efficiency is reduced
Solution Approach 1:
The patent introduces search space configuration as an intermediary mechanism that enables cross-carrier scheduling. The search space acts as a mediator between the scheduling cell and the scheduled cell, allowing downlink control information to be transmitted from one cell to another. This intermediary structure maintains simple scheduling control at the terminal device while enabling efficient cross-carrier scheduling at the network level.
Data Source
AI summary
The present application relates to the field of mobile communications. Disclosed are a search space configuration method and apparatus, and a device and a storage medium. The method comprises: receiving configuration signaling sent by a network device, wherein the configuration signaling is used to configure at least one first search space for a first cell to schedule a second cell across carriers, wherein the second cell is a self-scheduling cell; and detecting downlink control information in the at least one first search space. When the second cell supports self-scheduling, the second cell can also be scheduled by the first cell. Therefore, the manners of configuring a search space group of a cell are increased, and the cell scheduling manners are also increased, thereby improving the communication effect.