Wireless Backhaul Full-Duplex Link for Local Network Coverage
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Solution Overview
Problem
Existing wireless network architectures in local networks face challenges in increasing coverage area without compromising throughput and latency, as repeater devices and satellite devices often share airtime on the same wireless channel, leading to reduced bandwidth and increased processing resources for half-duplex scheduling.
Innovation Solution
Implementing a network device that uses separate, non-overlapping wireless channels for communications between user devices and network devices, enabling a wireless full-duplex link between satellite devices and the master device, which allows simultaneous data transmission and reception on different channels, thereby avoiding airtime competition and reducing processing resources needed for scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If repeater devices and satellite devices share airtime on the same wireless channel to increase coverage area, then coverage area is improved, but throughput is reduced and latency increases
Solution Approach 1:
The wireless channel is segmented into multiple separate, non-overlapping channels. Network devices use different wireless channels for communications with user devices versus communications with other network devices, eliminating airtime competition and enabling simultaneous transmissions without interference.
Solution Approach 2:
The system transitions from single-channel half-duplex communication to multi-channel full-duplex communication. By adding the dimension of multiple frequency channels, the system enables simultaneous bidirectional communication between network devices while maintaining coverage extension capabilities.
2Area of stationary object
If repeater devices and satellite devices share airtime on the same wireless channel to increase coverage area, then coverage area is improved, but processing resources for half-duplex scheduling increase
Solution Approach 1:
The wireless channel is segmented into multiple separate, non-overlapping channels. Network devices use different wireless channels for communications with user devices versus communications with other network devices, eliminating airtime competition and enabling simultaneous transmissions without interference.
3Productivity
If separate, non-overlapping wireless channels are used for communications between user devices and network devices, then throughput is improved and latency is decreased, but device complexity increases
Solution Approach 1:
Network devices are designed with multi-functionality to operate on multiple wireless channels simultaneously. Each network device can receive and transmit on different channels, enabling full-duplex operation and eliminating the need for complex half-duplex scheduling while maintaining manageable device complexity.
Data Source
AI summary
A network device receives, from a user device, a data packet on a first wireless channel between the user device and the network device. The network device processes the data packet based on receiving the data packet, and transmits the processed data packet to a second network device on a second wireless channel between the network device and the second network device. The network device, the second network device, and the user device are included in a local network. The first network device and the second network device are communicatively connected via a wireless full-duplex link that includes the second wireless channel and a third wireless channel. The first wireless channel, the second wireless channel, and the third wireless channel are different wireless channels.