Access Window Envelope Controller for Wireless Network Traffic Scheduling
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Solution Overview
Problem
The increasing demand for wireless communication is leading to a higher load on wireless communication networks, with varying data urgency and importance, causing inefficiencies in the use of the RF spectrum, as existing technologies do not effectively manage data traffic based on relative importance or urgency.
Innovation Solution
Implementing an Access Window Envelope Controller (AWEC) system that schedules data transmission windows for wireless nodes, allowing for the queuing and buffering of data packets and managing RF resources without considering the relative importance or urgency of data from different devices, using a network architecture that includes a radio access network, core network, and policy server to determine when to send packets to wireless nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data transmission is allowed continuously without scheduling, then network responsiveness is improved, but RF spectrum efficiency deteriorates due to unnecessary transmissions during low-traffic periods
Solution Approach 1:
The patent implements periodic access windows for data transmission instead of continuous transmission. The AWEC schedules specific time intervals (access windows) during which wireless nodes can transmit data, creating a periodic pattern that improves RF spectrum efficiency while maintaining network responsiveness. This is evident in the scheduling mechanism that opens access windows at predetermined intervals for different nodes.
Solution Approach 2:
The system performs preliminary scheduling of access windows before data transmission occurs. The AWEC pre-calculates and announces access window timings to wireless nodes in advance, allowing nodes to prepare their data for transmission during scheduled intervals. This preliminary action reduces unnecessary transmissions and improves overall RF spectrum utilization.
2Loss of energy
If access windows are scheduled for all wireless nodes, then RF spectrum efficiency is improved, but network complexity increases due to scheduling management
Solution Approach 1:
The AWEC acts as an intermediary between the network core and wireless nodes, centralizing the scheduling function. It manages access window allocation and communicates schedules to nodes, simplifying the overall system architecture. The AWEC handles the complexity of scheduling management in a centralized manner, reducing the burden on individual nodes and the network core.
3Loss of energy
If data packets are queued and buffered during access windows, then peak data loads are reduced, but transmission delays increase for time-sensitive data
Solution Approach 1:
The access window scheduling system dynamically adjusts window timings and durations based on network conditions and data urgency. The AWEC can modify scheduling parameters in real-time to balance load reduction benefits against delay constraints, making the system adaptive rather than static. This dynamic approach allows optimization of both peak load reduction and transmission delay.
Solution Approach 2:
The system changes scheduling parameters (access window start times, durations, and frequencies) to optimize performance. By adjusting these parameters based on traffic patterns and data priorities, the system can reduce peak loads while minimizing delays for time-sensitive transmissions. Parameter optimization is key to resolving the contradiction between load reduction and delay.
Data Source
AI summary
A method may include receiving a packet destined to a wireless node, buffering the packet, and scheduling a time at which to transmit the packet to the wireless node. Scheduling the packet may include determining an application-layer protocol associated with the packet. The method may also include wirelessly transmitting the packet to the wireless node at the scheduled time. In one embodiment, the method may also include sending information to a node that originated the packet indicating that the packet is buffered. In another embodiment, sending information to the node that originated the packet indicating that the packet is scheduled to be wirelessly transmitted at the scheduled time.