Configurable Downlink and Uplink Channels in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in improving throughput and reducing interference due to fixed duplexing frequency in FDD systems, which leads to sub-optimal performance and interference between base stations and terminals.
Innovation Solution
The implementation of configurable channels for downlink and uplink communications, allowing terminals to dynamically select channels based on factors like channel quality, loading, and interference, resulting in variable duplexing and dynamic frequency reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed duplexing frequency is used in FDD systems, then system simplicity is maintained, but interference between base stations and terminals increases and throughput is reduced
Solution Approach 1:
The patent applies dynamics by making the duplexing frequency configurable rather than fixed. The system dynamically selects from multiple possible duplexing frequencies based on channel conditions, interference levels, and quality of service requirements. This allows the frequency separation between downlink and uplink channels to adapt to changing system conditions, thereby reducing interference and improving throughput while maintaining FDD architecture simplicity.
2Adaptability or versatility
If configurable channels are implemented for downlink and uplink, then quality of service and channel usage optimization improve, but system complexity increases
Solution Approach 1:
The patent implements parameter changes by configuring the duplexing frequency as a variable parameter that can be selected from multiple options. The system changes the frequency separation parameter based on measured channel conditions, interference levels, and QoS requirements. This allows the system to adapt to different scenarios without requiring a complete redesign of the FDD architecture, thereby improving QoS while controlling the increase in system complexity through parameter-based flexibility rather than structural complexity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal. The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.