P2P Roaming Schedule Coordination for Seamless Access Point Handover
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Solution Overview
Problem
Conventional peer-to-peer communication scheduling in wireless local area networks is inefficient when a station roams out of the coverage area of its associated access point.
Innovation Solution
A peer-to-peer device initiates a transition to a new access point by transmitting its current communication schedule, negotiating with the new AP for acceptance or a modified schedule, and notifying its counterpart of the transition and any schedule changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional peer-to-peer scheduling is used, then device complexity is reduced, but communication efficiency deteriorates when a station roams out of coverage area
Solution Approach 1:
The patent introduces the access point as an intermediary that assumes responsibility for peer-to-peer scheduling even when client devices are in peer-to-peer mode. The AP receives peer-to-peer transmission schedules from roaming clients, validates them against its own schedule, and coordinates resources to prevent conflicts. This mediator approach maintains communication efficiency during roaming while avoiding the complexity of peer-to-peer devices managing their own schedules independently.
Solution Approach 2:
The patent implements preliminary action by having the access point proactively manage and coordinate peer-to-peer transmission schedules before roaming events occur. The AP continuously monitors client device locations, predicts potential roaming scenarios, and pre-coordinates transmission time slots and resource units to ensure seamless transitions. This advance preparation eliminates scheduling conflicts and maintains communication efficiency without requiring complex real-time negotiations during roaming.
2Reliability
If peer-to-peer devices manage their own schedules independently, then device complexity is reduced, but reliability deteriorates during roaming transitions
Solution Approach 1:
The access point serves as a coordinating intermediary that receives peer-to-peer transmission schedules from roaming clients, validates them against its own schedule, and adjusts resource allocation to ensure continuity. This mediator role ensures reliable communication during roaming transitions by centralizing schedule coordination and preventing conflicts, while avoiding the complexity of peer-to-peer devices independently managing their own schedules.
Solution Approach 2:
The patent implements feedback mechanisms where the access point continuously monitors the location and status of client devices, receives peer-to-peer transmission schedule information, and provides feedback by validating schedules and coordinating resource allocation. This feedback loop ensures that scheduling decisions are dynamically adjusted based on real-time conditions, maintaining communication reliability during roaming while keeping the system manageable through centralized coordination.
3Reliability
If the access point manages all peer-to-peer schedules centrally, then reliability improves, but device complexity increases
Solution Approach 1:
The patent applies partial action by having the access point manage only the coordination and validation aspects of peer-to-peer scheduling, rather than controlling every transmission detail. The AP receives peer-to-peer transmission schedules from clients, performs necessary validations, and coordinates resource allocation, while allowing client devices to maintain their own schedule structures. This partial management approach improves reliability through centralized coordination without excessively increasing access point complexity.
Solution Approach 2:
The access point is designed with multi-functionality to handle both traditional infrastructure mode communications and peer-to-peer scheduling coordination simultaneously. By integrating these functions into a single device, the system avoids the need for separate management mechanisms, improving reliability through unified scheduling while minimizing the increase in device complexity through functional consolidation.
Data Source
AI summary
Techniques for improved peer-to-peer communication are provided. A roaming peer-to-peer device may identify a new access point (AP) and initiate a transition to the new AP. Initiating transition can involve sending, to the new AP, the current peer-to-peer communication schedule for approval and/or negotiating a modified peer-to-peer communication schedule with the new AP. When the roaming peer-to-peer device and the new AP agree on the peer-to-peer communication schedule, the peer-to-peer device may notify its counterpart that it has roamed to the new AP and also notify the counterpart of any updates to the peer-to-peer communication schedule.