Network Device Coordinated Communication for Millimeter-Wave Interference
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Solution Overview
Problem
Current wireless local area network (WLAN) devices operating in the 2.4 GHz to 5 GHz frequency bands face challenges due to dense spectrum resources, while the 60 GHz millimeter-wave frequency band offers abundant resources but suffers from severe signal attenuation and path loss, requiring beamforming training for effective communication.
Innovation Solution
An information transmission method where a second network device listens to a first frame sent by a first network device to determine if it supports communication between network devices. If both devices support such communication, the second network device transmits information with the first network device, facilitating coordinated communication for interference management, resource allocation, and mobile handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If millimeter-wave frequency band (60 GHz) is used for communication, then spectrum resources are improved, but signal attenuation and path loss worsen
Solution Approach 1:
The patent divides the communication process into distinct phases: beamforming training phase for establishing directional links, and data transmission phase for actual communication. This segmentation allows the system to first optimize for signal reliability through beam alignment, then efficiently utilize the abundant spectrum resources for data transfer.
Solution Approach 2:
The patent performs beamforming training before actual data transmission to pre-establish optimal transmit and receive beams. This preliminary action ensures that when data transmission begins, the directional links are already optimized, compensating for the severe path loss inherent in millimeter-wave frequencies.
2Reliability
If beamforming training is performed for each basic service set (BSS), then communication reliability is improved, but system complexity and overhead increase
Solution Approach 1:
The patent creates a unified coordination mechanism where a coordinating network device manages beamforming training and resource allocation across multiple BSSs simultaneously. This universal coordination reduces redundant training operations and optimizes resource utilization across the entire network, rather than treating each BSS independently.
Solution Approach 2:
The patent introduces a coordinating network device as an intermediary that centralizes the management of inter-BSS communications. This mediator handles beamforming coordination, resource allocation, and interference management, reducing the complexity burden on individual BSSs while maintaining overall system reliability.
3Productivity
If network devices frequently perform coordinated communication, then resource utilization is improved, but interference management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where network devices report channel conditions, interference levels, and resource usage to the coordinating device. This feedback enables dynamic adjustment of resource allocation and beamforming strategies, optimizing resource utilization while managing interference through informed decision-making.
Solution Approach 2:
The patent replaces complex mechanical coordination protocols with streamlined information exchange mechanisms. By using standardized signaling and coordination messages, the system achieves efficient resource allocation and interference management without requiring complex device-to-device coordination procedures.
Data Source
AI summary
An information transmission method and a network device, the network device including a transceiver, a processor, and a non-transitory storage medium storing a computer program for execution by the processor. The computer program includes instructions to receive a first frame through the receiver, where an extended schedule element of the first frame has a field indicating communication between network devices is supported, and where the extended schedule element further has a source association identifier and a destination association identifier, and control the transceiver to transmit information to a first network device when both the first network device and the network device support communication between network devices, where a value of the source association identifier and a value of the destination association identifier are each 0.