Wireless Network Controller Service Period Scheduling
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Solution Overview
Problem
Current millimeter-wave wireless personal area networks (WPANs) face challenges in efficiently scheduling service periods, particularly in ensuring predictable and timely data transmission within the network, which affects high-data-rate applications like video streaming and Internet access.
Innovation Solution
Implementing a method where the PBSS control point (PCP) in the mmWave network schedules a service period with a start time that is no less than a predefined time after transmitting scheduling information, allowing for pseudo-static and non-pseudo-static service periods, and using a wireless network controller to manage this scheduling process, ensuring efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the PCP transmits scheduling information immediately before the service period, then the data transmission can start sooner, but the receiving station may not have sufficient time to process the scheduling information, leading to transmission errors
Solution Approach 1:
The patent introduces a predefined time interval between transmitting scheduling information and the actual service period start. This preliminary action allows the receiving station adequate time to process the scheduling information before data transmission begins, ensuring both timely delivery and processing reliability.
2Reliability
If the service period start time is scheduled too far after the scheduling information transmission, then the receiving station has sufficient processing time, but the overall data transmission efficiency decreases
Solution Approach 1:
The patent optimizes the predefined time interval parameter to achieve the best balance between processing reliability and transmission efficiency. By carefully selecting this time parameter, the system ensures sufficient processing time while minimizing the delay before data transmission, thus maintaining high productivity.
3Device complexity
If the network uses fixed service period scheduling, then the scheduling process is simple and predictable, but the network cannot adapt to dynamic traffic requirements and changing conditions
Solution Approach 1:
The patent implements both fixed and dynamic service period scheduling mechanisms. The fixed scheduling provides simplicity and predictability for regular traffic patterns, while the dynamic scheduling capability allows the PCP to adjust service periods in response to changing traffic requirements and network conditions, achieving both low complexity and high adaptability.
Data Source
AI summary
Devices, systems and methods to schedule a service period at a wireless network. A wireless network controller of the wireless network may set a start time of a service period. The start time is no less than a predefined time after transmitting by the wireless network controller an information element containing the service period scheduling information.