Multi-Band Communication Scheduling with Common RB Alignment
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Solution Overview
Problem
Existing communication systems face high control resource overheads due to the need for multiple pieces of scheduling information when a terminal device is covered by multiple component carriers, leading to inefficient use of air interface resources.
Innovation Solution
A communication method that configures at least two frequency bands for a terminal device, allowing a single piece of scheduling information to schedule data transmission across both bands by establishing a common resource block deviation and alignment, thereby reducing control resource overheads and improving data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pieces of scheduling information are transmitted to schedule data transmission on multiple frequency bands, then data transmission coverage is improved, but control resource overheads increase
Solution Approach 1:
The patent combines multiple scheduling information pieces into a single scheduling information structure that can simultaneously indicate resource blocks on multiple frequency bands. This merging approach allows the terminal device to receive scheduling information for both first and second frequency bands through one piece of scheduling information, thereby reducing control resource overheads while maintaining comprehensive data transmission coverage.
Solution Approach 2:
The scheduling information is designed with multi-functionality to serve multiple frequency bands simultaneously. The single scheduling information structure can indicate resource blocks on both the first frequency band and the second frequency band, making it a universal scheduling mechanism that eliminates the need for separate scheduling information for each frequency band.
2Reliability
If multiple pieces of scheduling information are used for multiple frequency bands, then transmission reliability is improved, but air interface resources are wasted
Solution Approach 1:
The patent merges multiple scheduling information pieces into a single unified scheduling information structure that maintains transmission reliability across multiple frequency bands. This single scheduling information indicates resource blocks on both frequency bands, ensuring reliable data transmission while eliminating the waste of air interface resources that would occur with multiple separate scheduling information pieces.
3Quantity of substance
If frequency bands are aligned for common resource block scheduling, then control resource overheads are reduced, but scheduling flexibility is constrained
Solution Approach 1:
The patent introduces dynamic offset parameters that allow the resource block alignment to be flexible rather than fixed. The offset between the first frequency band and second frequency band can be dynamically adjusted based on actual scheduling needs, maintaining scheduling flexibility while still enabling common resource block scheduling to reduce control resource overheads.
Solution Approach 2:
The patent changes the alignment parameter from a fixed relationship to a dynamic offset-based relationship. By introducing offset parameters that can vary, the system maintains the benefits of aligned scheduling for reduced overheads while preserving the flexibility to adapt to different frequency band configurations and scheduling requirements.
Data Source
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AI summary
This application relates to the field of communication technologies, and provides a communication method and apparatus, to reduce control resource overheads. The method includes: A terminal device receives configuration information from a network device. The configuration information is used to configure at least two frequency bands for the terminal device, and the at least two frequency bands include a first frequency band and a second frequency band. The terminal device receives first scheduling information from the network device. The first scheduling information indicates a target resource block RB for data transmission. The terminal device performs data transmission with the network device on a same symbol by using a first RB on the first frequency band and a second RB on the second frequency band. There is a first common resource block CRB deviation between the first RB and the second RB, and the target RB includes the first RB or the second RB.