Wireless Device Role Negotiation via Priority Comparison
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Solution Overview
Problem
In wireless communication networks, devices operating on different channels face difficulties in discovering each other, and there is a need for efficient methods to negotiate and determine which device will be the master in peer-to-peer networks without a typical access point.
Innovation Solution
The method involves transmitting and receiving priority values indicative of a device's preference to become a master or client, using a set of priority values defined by a communication protocol, and comparing these values to determine the master-client relationship through a process that includes toggling between listen and search states with randomized timing to improve discovery chances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If devices transmit and receive priority values to negotiate master-client relationships, then the master-client role assignment is improved, but the communication overhead increases
Solution Approach 1:
The patent applies preliminary action by having devices exchange priority values before establishing the master-client relationship. Each device preemptively transmits its preferred priority level, allowing the negotiation to proceed efficiently without requiring complex real-time decision-making during connection establishment. This preliminary exchange of priority information enables automatic role determination while minimizing communication overhead.
2Reliability
If devices use randomized timing in listen and search states to improve discovery chances, then device discovery is improved, but the time to establish connection increases
Solution Approach 1:
The patent implements periodic action through the alternating listen and search states with randomized timing intervals. Devices periodically switch between listening for master announcements and searching for available masters, with randomization ensuring that devices on different channels have overlapping active periods. This periodic alternation between listen and search modes guarantees discovery reliability while keeping the overall establishment time manageable through structured intervals rather than continuous operation.
Data Source
AI summary
A first device transmits a first packet to a second device, the first packet including a first value indicative of a priority for the first device to become a master in a peer-to-peer (P2P) wireless communication network. The first device receives a second packet transmitted by the second device, wherein the second packet includes a second value indicative of a priority for the second device to become the master in the P2P wireless communication network. The first device compares the first value with the second value, and determines whether the first device is to become the master or a client in the P2P wireless communication network based on the comparison of the first value with the second value.