Wireless Uplink Switching Across Three Bands with Limited Chains
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting and receiving signals due to limitations in uplink switching between multiple bands, particularly when a user equipment (UE) has limited transmission chains, leading to suboptimal throughput and efficiency in UL transmissions.
Innovation Solution
The method involves configuring at least three uplink bands and triggering uplink switching based on UL transmissions, with concurrent transmission in specific band combinations being limited to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If concurrent transmission in all UL bands is allowed, then throughput is improved, but device complexity increases due to limited transmission chains
Solution Approach 1:
The patent implements dynamic UL band switching where the UE can switch between different UL bands based on transmission requirements. The base station configures multiple UL bands and controls switching timing, allowing the system to adapt between single-band and multi-band operations dynamically, resolving the contradiction between throughput improvement and device complexity
Solution Approach 2:
The patent segments the UL transmission into different time periods: a first time period for UL transmission in a first UL band, and a second time period for UL transmission in a second UL band. This temporal segmentation allows the limited transmission chains to serve multiple bands sequentially rather than requiring simultaneous multi-band capability
2Productivity
If UL switching is implemented across multiple bands, then transmission efficiency is improved, but signal interference increases
Solution Approach 1:
The base station performs preliminary configuration of multiple UL bands and determines switching timing in advance. The UE is configured with UL band switching parameters before actual transmission begins, allowing the system to pre-coordinate transmissions to avoid interference while maintaining high efficiency
Solution Approach 2:
The patent incorporates feedback mechanisms where the base station receives information about UE transmission status and channel conditions, then adjusts UL band switching decisions accordingly. This feedback loop allows the system to respond to actual interference conditions and optimize transmission timing
Data Source
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AI summary
A method and a device for transmitting or receiving a signal in a wireless communication system, disclosed in the present specification, allow uplink switching to be performed among three or more bands. To reduce the complexity of a terminal, a part of uplink switching which can occur among the three or more bands may be restricted or allowed.