Wireless Transmit Slot Scheduling via Medium-Free Time Detection
Solution Overview
Problem
In dense wireless communication environments, interference between Personal Basic Service Sets (PBSS) can cause delays or starvation of services and excessive power consumption due to unsynchronized traffic scheduling, leading to suboptimal execution of planned traffic slots.
Innovation Solution
Implementing a scheduler that sets transmit slots with shifted start times based on medium-free times, rather than fixed start times, to avoid collisions and optimize resource allocation, thereby ensuring efficient communication without synchronization between PBSS networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed start times are used for transmit slots, then scheduling is simple and deterministic, but interference occurs in dense environments causing delays and power consumption issues
Solution Approach 1:
The patent applies dynamics by making the transmit slot start time flexible rather than fixed. The scheduler dynamically adjusts the start time of transmit slots based on the detected medium-free time, allowing the system to adapt to changing interference conditions in dense environments while maintaining reliable service delivery
Solution Approach 2:
The patent changes the time parameter of transmit slots from fixed values to variable values based on medium-free detection. By modifying the start time parameter dynamically according to actual channel conditions, the system resolves the contradiction between reliability and scheduling complexity
2Productivity
If transmit slots are scheduled at fixed times, then resource allocation is predictable, but collisions with other PBSS networks cause service delays and starvation
Solution Approach 1:
The patent applies preliminary action by detecting the medium-free time before scheduling transmit slots. The scheduler proactively identifies available time periods and adjusts slot allocations in advance, preventing collisions and service delays before they occur rather than reacting after interference happens
Solution Approach 2:
The patent implements feedback by continuously monitoring medium-free time and using this information to adjust transmit slot scheduling. The scheduler receives feedback about channel availability and dynamically modifies resource allocation to maximize productivity while minimizing service delays
3Use of energy by stationary object
If traffic scheduling is performed without considering medium availability, then scheduling execution is simple, but excessive power consumption occurs due to failed transmissions and retransmissions
Solution Approach 1:
The patent applies self-service by enabling the scheduling system to automatically detect medium-free time and adjust its own slot allocations without external intervention. The network controller monitors channel conditions and autonomously optimizes transmit slot timing, reducing power consumption through intelligent adaptation while maintaining operational simplicity
Data Source
AI summary
Some demonstrative embodiments include apparatuses, systems and/or methods of setting transmit slots in a wireless communication network. For example, an apparatus may include a scheduler to set a suggested start time of a first transmit slot to transmit over a wireless communication medium, and, if a start of a medium free time for the wireless communication medium is after the suggested start time, to shift the suggested start time to a shifted start time that coincides with the start of the medium free time, and to set a suggested start time of a second transmit slot based on the shifted start time.