Wakeup Schedule Coordination for TDLS Power Savings
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Solution Overview
Problem
In IEEE 802.11-compliant WLAN networks, the lack of coordination between TDLS direct links leads to inefficient data transmission times, causing potential inefficiencies due to overlapping active periods while other periods remain unused.
Innovation Solution
A communication device and method that receive a request for a wakeup schedule to support direct communications between stations, determining and managing the schedule to avoid overlapping data transmission times and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If STAs use TDLS power save mode with periodic sleep and wake up, then power consumption is reduced, but data transmission efficiency deteriorates due to overlapping active periods and unused periods
Solution Approach 1:
The access point acts as an intermediary that receives wakeup schedule requests from STAs, determines coordinated wakeup schedules to avoid overlapping active periods, and provides these schedules back to the STAs. This mediator approach resolves the conflict between power saving and transmission efficiency by enabling centralized coordination of power save operations across multiple TDLS links.
2Device complexity
If multiple TDLS direct links operate independently without coordination, then device complexity is reduced, but network resource utilization deteriorates due to overlapping and unused transmission periods
Solution Approach 1:
The access point serves as a mediator that receives wakeup schedule requests from STAs, determines coordinated schedules that prevent overlapping active periods, and distributes these schedules to the STAs. This approach maintains low device complexity at the STA level while achieving high network resource utilization through centralized coordination.
Data Source
AI summary
Various aspects of a communication device for supporting wireless communication for a plurality of stations associated with the communication device are provided. The communication device includes a transceiver configured to receive a request for a wakeup schedule to support direct communications between a first one of the stations and a second one of the stations. In an aspect, the wakeup schedule request may be included in a beacon frame or a probe frame. The communication device also includes a processing system coupled to the transceiver and configured to determine the wakeup schedule for the direct communications based at least in part on the request for the wakeup schedule. In an aspect, the processing system may be configured to determine the wakeup schedule based on one or more parameters included in the wakeup schedule request. In an aspect, the wakeup schedule may include one or more wakeup intervals.