Collocated Radio Transmission Coordination via Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication devices with multiple coexisting radios, interference occurs when radios operate in overlapping frequency bands, leading to performance degradation due to concurrent transmissions and receptions.
Innovation Solution
A scheduling message is exchanged between radios to determine if parallel transmissions are possible, and if so, transmission power levels are dynamically adjusted or frame sizes adapted to minimize interference, or transmissions are coordinated to avoid overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radios operate concurrently in overlapping frequency bands, then communication productivity is improved, but cross-interference between radios increases
Solution Approach 1:
The patent implements a scheduling mechanism where radios exchange scheduling messages before transmissions to preemptively identify and resolve potential interference conflicts. This preliminary coordination allows the system to plan parallel transmissions in advance, ensuring that high-productivity concurrent operations do not generate harmful cross-interference.
Solution Approach 2:
The patent dynamically adjusts transmission parameters such as power levels and frame sizes based on real-time interference conditions. When parallel transmissions are scheduled, the system adaptively modifies these parameters to minimize cross-interference while maintaining communication productivity, making the radio system flexible and responsive to changing conditions.
2Object-generated harmful factors
If transmission power levels are reduced to minimize cross-interference, then harmful effects are reduced, but signal quality and transmission reliability deteriorate
Solution Approach 1:
The patent applies different power levels and transmission parameters to different radios based on their specific interference situations. Instead of uniformly reducing power across all radios, the system selectively adjusts parameters for individual radios that are causing or experiencing interference, thereby minimizing cross-interference while preserving signal quality for non-interfering transmissions.
Solution Approach 2:
The patent changes transmission parameters such as power levels and frame sizes dynamically based on scheduled transmissions and interference conditions. By adjusting these parameters locally and selectively rather than globally, the system reduces cross-interference without compromising the reliability and signal quality of transmissions that do not cause interference.
3Object-generated harmful factors
If transmissions are coordinated to avoid overlap, then cross-interference is reduced, but transmission time and device complexity increase
Solution Approach 1:
The patent combines multiple radios into a coordinated system that shares scheduling information and transmission plans. By merging the scheduling functions and allowing radios to exchange coordination messages, the system achieves interference reduction through collaborative planning, where the combined intelligence of multiple radios manages their own interference rather than requiring complex external control.
Solution Approach 2:
The patent implements a feedback mechanism where radios exchange scheduling messages that contain information about their intended transmissions. This feedback loop allows each radio to adjust its transmission plan based on the scheduled activities of other radios, creating a self-regulating system that reduces cross-interference through informed coordination rather than complex centralized control.
Data Source
AI summary
Methods, systems, and devices are described for wireless communication at a wireless device having collocated radios employing different radio access technologies (RATs). For example, a second radio of the wireless device may receive a first scheduling message. The first scheduling message may include information relating to timing, priority, transmission power, and radio capabilities. Using this scheduling message, a determination of whether a first radio employing a first RAT and the second radio employing a second RAT can transmit in parallel may be made. A first transmission on the first radio may be coordinated with a second transmission on the second radio based on the determination of whether the first radio and the second radio can transmit in parallel. A number of data units may be aggregated into an aggregate frame to be transmitted by the second radio. The number of data units may be based on the scheduling message.