Wireless Congestion Management via Path-Specific Segmentation
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Solution Overview
Problem
Current multi-path transmission control protocols (MPTCP) lack defined congestion control schemes, leading to issues like fairness violations, packet reordering due to varying data rates and round trip times across transmission paths, and inefficient resource allocation in wireless communication systems.
Innovation Solution
A method and apparatus for managing congestion in wireless communication systems by allocating data rates to each transmission path, determining throughput for TCP connections, and performing congestion control considering the status of other client terminals and energy efficiency, using a transceiver to receive status information and a processor to acquire and transmit additional path setup information for optimal data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission paths are used to increase data rate, then transmission capability is improved, but congestion control becomes undefined leading to fairness violations and packet reordering
Solution Approach 1:
The patent segments the congestion control function by path by introducing path-specific congestion windows (cwnd1, cwnd2, ...) for each transmission path. This allows independent congestion management for each path while maintaining overall multi-path functionality, resolving the fairness and packet reordering issues caused by undefined congestion control in MPTCP
Solution Approach 2:
The patent dynamically adjusts the congestion window size for each path based on real-time congestion status and available bandwidth. The congestion window is updated according to packet loss rates and path conditions, enabling adaptive congestion control that prevents fairness violations and packet reordering while maximizing data rate
2Productivity
If data rate is increased to meet high-definition broadcast requirements, then service quality is improved, but available bandwidth is insufficient when number of terminals increases
Solution Approach 1:
The patent transitions from single-path transmission to multi-path transmission, adding the dimension of multiple simultaneous transmission paths. This allows the system to aggregate bandwidth from multiple paths (cellular and WLAN) to meet high data rate requirements even when the number of terminals increases
Solution Approach 2:
The patent changes the parameter of transmission paths from single to multiple, and dynamically adjusts congestion window sizes and data rates for each path based on available bandwidth and congestion status. This enables the system to maintain high data rates while accommodating increasing numbers of terminals through efficient resource allocation
3Adaptability or versatility
If transmission paths have different data rates and round trip times, then data transmission flexibility is improved, but packet reordering occurs
Solution Approach 1:
The patent segments packet transmission by path and implements path-specific congestion control with separate congestion windows for each path. This segmentation allows different data rates and round trip times for different paths while preventing packet reordering through independent congestion management for each path
Solution Approach 2:
The patent implements feedback mechanisms for each path by monitoring packet loss rates, available bandwidth, and congestion status. This feedback is used to dynamically adjust congestion window sizes and data rates for each path, maintaining packet order while preserving transmission flexibility across paths with different characteristics
Data Source
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AI summary
The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method for managing congestion in a first node in a wireless communication system is provided. The method includes receiving status information from each of nodes configuring a network with the first node, receiving information about a service requirement criterion from a second node as one of the nodes, acquiring additional path setup information for the second node based on the status information received from each of the nodes and the information about the service requirement criterion received from the second node, and transmitting the acquired additional path setup information to the second node.