TCP Controller Radio Selection for Power Reduction
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Solution Overview
Problem
Wireless user devices do not efficiently and effectively utilize Transmission Control Protocol (TCP) to optimize the use of different radios in wireless communication networks.
Innovation Solution
The implementation of a TCP controller in User Equipment (UE) that estimates TCP retransmission rates for various radios based on past data, selects the radio with the lowest power consumption, and manages TCP packet exchanges and retransmissions across multiple radio technologies such as Bluetooth, 5GNR, LP-WAN, LTE, and WIFI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TCP retransmission control is implemented across multiple radio technologies, then data transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments TCP retransmission control by creating separate retransmission queues for different radio access technologies (LTE, 5G, WIFI, Bluetooth). Each radio type has its own queue that independently tracks sequence numbers and manages retransmissions, allowing granular control without requiring complex cross-radio coordination logic.
Solution Approach 2:
The patent introduces an intermediary component (the TCP controller with sequence number tracking) that mediates between the application layer and multiple radio interfaces. This intermediary maintains sequence number state and coordinates retransmissions across different radios, simplifying the overall system architecture by centralizing TCP control logic.
2Adaptability or versatility
If TCP packets are exchanged across multiple radios, then adaptability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic radio selection by maintaining multiple active radio interfaces (LTE, 5G, WIFI, Bluetooth) and selectively activating them based on current network conditions and data transmission requirements. The system can dynamically switch between radios and maintain TCP connections across different access technologies without requiring full re-establishment of connections.
Solution Approach 2:
The patent changes the parameter of radio interface activation state, allowing radios to be dynamically enabled or disabled based on TCP retransmission performance and network availability. The system monitors retransmission rates and adjusts which radios remain active, transitioning between low-power and high-performance states as needed.
3Measurement precision
If TCP retransmission tracking is maintained for multiple radios, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent segments the retransmission tracking function by creating dedicated sequence number trackers for each radio access technology. Each tracker independently monitors sequence numbers, acknowledgments, and retransmissions for its specific radio, allowing parallel processing of multiple radio streams without requiring sequential analysis of all packets across all radios.
Data Source
AI summary
In User Equipment (UE) at various geographic locations, circuitry exchanges TCP packets with radios, and the radios wirelessly exchange the TCP packets with wireless communication nodes. The circuitry determines TCP retransmission rates for the radios at the geographic locations. The circuitry estimates TCP retransmission rates for the radios at a new geographic location based on the TCP retransmission rates for the radios at the past geographic locations. The circuitry selects one of the radios based on the estimated TCP retransmission rates at the new geographic location. At the new geographic location, the circuitry exchanges new TCP packets with the selected one of the radios, and the selected one of the radios wirelessly exchanges the new TCP packets with one of the wireless communication nodes.