Hybrid Coordinator QoS Scheduling for Wireless Station Power Management
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Solution Overview
Problem
In wireless networks, wireless stations lack knowledge of the service schedule determined by the hybrid coordinator, leading to inefficient power management as they cannot enter a power save mode when transmission opportunities are not scheduled, resulting in unnecessary resource usage.
Innovation Solution
A method and apparatus that enable a hybrid coordinator to create and send a Quality of Service (QoS) service schedule and bandwidth allocation message to wireless stations, allowing them to perform power management by entering a power save mode during unscheduled times and utilize scheduling information for other purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the service schedule is kept within the hybrid coordinator and not made known to wireless stations, then the network complexity is reduced and the coordinator has centralized control, but the wireless stations cannot perform efficient power management and waste energy by remaining awake during unscheduled times
Solution Approach 1:
The hybrid coordinator sends feedback messages containing service schedule information to wireless stations, enabling the stations to know when transmission opportunities are scheduled and enter power save mode during unscheduled times, thus resolving the energy consumption issue while maintaining centralized control
Solution Approach 2:
The service schedule is announced in advance to wireless stations before the actual transmission occurs, allowing stations to prepare for power save mode during unscheduled intervals and only wake up when transmission is scheduled, optimizing power management
2Reliability
If wireless stations remain awake continuously to capture transmission opportunities, then data transmission reliability is improved, but energy consumption increases unnecessarily during unscheduled times
Solution Approach 1:
By receiving feedback about the service schedule, wireless stations can reliably determine when to wake up for data transmission and when to enter power save mode, ensuring transmission reliability is maintained during scheduled times while energy is saved during unscheduled times
Solution Approach 2:
The schedule information is provided in advance, allowing stations to wake up just in time for scheduled transmissions and go into power save mode afterward, ensuring no transmission opportunities are missed while minimizing energy waste
Data Source
AI summary
An apparatus and method is disclosed for providing a Quality of Service (QoS) service schedule and bandwidth allocation message to a wireless station in a wireless network. The apparatus of the invention comprises a hybrid coordinator that is capable of (1) creating a Quality of Service (QoS) service schedule and a bandwidth allocation message for a wireless station and (2) sending the QoS service schedule and the bandwidth allocation message to the wireless station. The wireless station is capable of using the scheduling information to perform power management by entering a power save mode during times when the hybrid coordinator has not scheduled any transmission opportunities.