Cross-Carrier Scheduling Configuration for Multi-Cell CIF Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in wireless communication systems is efficiently scheduling a physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) for a primary cell (PCell) or primary secondary cell (PSCell) using control information transmitted through a physical downlink control channel (PDCCH) of a secondary cell (SCell).
Innovation Solution
A method involving cross-carrier scheduling configuration, where a terminal or base station receives configuration information to identify the presence of a carrier indicator field (CIF) and uses it to schedule data on another cell, with the configuration including information indicating a CIF value for multiple cells, enabling efficient radio resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cross-carrier scheduling is implemented to schedule PDSCH or PUSCH for PCell or PSCell using PDCCH of SCell, then radio resource utilization efficiency is improved, but control information configuration complexity increases
Solution Approach 1:
The control information configuration is segmented into multiple components: CIF presence field identification, CIF value identification for multiple cells, and conditional reception of downlink control information. This segmentation allows the system to manage complex cross-carrier scheduling by breaking it into manageable configuration steps, resolving the contradiction between improved resource utilization and increased configuration complexity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring CIF presence fields and CIF values for multiple cells before actual cross-carrier scheduling occurs. The terminal预先 identifies whether CIF presence fields are included and determines CIF values for SCell and other cells in advance, which simplifies the subsequent scheduling process and manages the complexity of control information configuration.
2Adaptability or versatility
If CIF presence field and CIF value information are included in configuration information for multiple cells, then scheduling flexibility is improved, but information processing complexity increases
Solution Approach 1:
The patent applies local quality by providing different configuration information to different cells based on their specific needs. Each cell can have its own CIF presence field status and CIF value, allowing the system to optimize scheduling flexibility locally for each cell while managing overall information processing complexity through targeted configuration rather than uniform complex configuration across all cells.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting higher data transmission rates than 4th generation (4G) systems such as Long Term Evolution (LTE). The present disclosure is for transmitting and receiving data and control information in a wireless or communication system, and an operation method of a technical is characterized by comprising receiving cross-carrier scheduling configuration information; identifying whether a carrier indicator field (CIF) presence field is included in the configuration information for a secondary cell (SCell); receiving downlink control information for another cell through the SCell, in case that the CIF presence field is included; and receiving data on the other cell based on the downlink control information, wherein the configuration information further includes information indicating the CIF value of the SCell in case that the CIF presence field is configured for two or more cells.