Adaptive Retransmission Base Station Frequency Band Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communications systems face complexity and high construction costs due to the need for advanced algorithms and modules for adaptive retransmission in base stations, which complicate radio resource scheduling and increase costs.
Innovation Solution
Implementing a method where a base station initially sends data packets on a first frequency band and, if unsuccessful, re-sends them on a second frequency band, allowing for separate scheduling of radio resources without considering retransmission resources, thereby simplifying algorithms and reducing system costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each base station configures adaptive retransmission function with retransmission scheduling module and buffer module, then data packet delivery reliability is improved, but device complexity and construction cost increase
Solution Approach 1:
The patent extracts the adaptive retransmission function from individual base stations and relocates it to the core network. The core network configures multiple frequency bands for retransmission and manages the retransmission process centrally, while base stations only perform simple transmission and reception without needing complex retransmission scheduling modules or buffer modules. This extraction reduces base station complexity while maintaining delivery reliability through core network coordination.
2Device complexity
If base station uses same frequency band for initial transmission and retransmission, then radio resource utilization is simplified, but scheduling algorithm complexity increases due to need to consider retransmission resources
Solution Approach 1:
The patent segments the frequency resource usage into two distinct parts: initial transmission uses a first frequency band, while retransmission uses a second frequency band. This segmentation allows independent scheduling of each transmission phase without needing to coordinate resources across the same frequency band, significantly simplifying the scheduling algorithm while maintaining efficient radio resource utilization through dedicated frequency allocation for each phase.
Data Source
AI summary
The present application relates to a base station, user equipment, and an adaptive retransmission method. The base station includes a sending unit, configured to send a data packet to user equipment by using a radio resource on a first frequency band, The base station also includes a receiving unit, configured to receive feedback information sent by the user equipment, where the feedback information is used to indicate whether the data packet is successfully sent. The sending unit is further configured to, if the feedback information indicates that the data packet fails to be sent, send the data packet to the user equipment by using a radio resource on a second frequency band. The first frequency band and the second frequency band have an overlapping coverage area, and the user equipment is within the overlapping coverage area.