Transmission Mode Selection in Dense Wireless Networks
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Solution Overview
Problem
In dense wireless communication networks, existing technologies face challenges in managing transmission modes to prevent interference and enhance spatial reuse, as longer range transmission modes can disrupt neighboring networks.
Innovation Solution
A method and apparatus that instruct communication devices to limit the use of extended range transmission modes by generating and transmitting specific frames within the network, restricting the use of high-data-rate modulation and coding schemes, dual carrier modulation, and extended range PPDU formats to prevent interference and facilitate spatial reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If extended range transmission modes are used to improve communication coverage, then transmission range is increased, but interference with neighboring networks increases and spatial reuse is reduced
Solution Approach 1:
The patent changes the transmission mode parameters by instructing devices to avoid using extended range transmission modes (such as HE PPDUs with certain MCS indices, DCM modes, and specific PPDU formats) and instead use standard transmission modes. This parameter change reduces the transmission range to an optimal level that prevents interference while maintaining adequate coverage for dense network operations.
2Volume of moving object
If extended range transmission modes are used to improve coverage, then transmission range is increased, but spatial reuse is reduced
Solution Approach 1:
By changing the transmission mode parameters from extended range modes to standard modes, the patent optimizes the transmission range to enable better spatial reuse. This allows multiple networks to operate simultaneously in the same physical space without excessive interference, thereby improving overall network productivity and throughput in dense deployments.
3Object-generated harmful factors
If standard transmission modes are restricted to improve spatial reuse, then interference is reduced, but transmission range is decreased
Solution Approach 1:
The patent applies partial action by selectively restricting only the extended range transmission modes while allowing standard transmission modes to continue operating. This partial restriction is sufficient to reduce interference and improve spatial reuse in dense networks, while maintaining adequate transmission range for normal operations without requiring a complete ban on all high-range modes.
Data Source
AI summary
In a wireless communication network that operates according to a communication protocol that defines one or more first transmission modes that provide extended range communications as compared to one or second transmission modes defined by the communication protocol, a communication device generates a communication frame that includes information indicating that the one or more first transmission modes should not be used when transmitting in the wireless communication network. The communication device transmits the communication frame to instruct one or more other communication devices in the wireless communication network to not use the one or more first transmission modes when transmitting in the wireless communication network.