MIMO Point-to-Point Links With Beamforming for Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless broadband networks face high costs and interference issues due to the need for separate transmission equipment and antennas for access and backhaul networks, with limited frequency diversity and modulation capabilities, leading to reduced network capacity and increased latency.
Innovation Solution
The implementation of a point-to-point communication system using omni-directional or directional antennas with MIMO capabilities, dynamically adapted beam forming, and interference mitigation mechanisms, allowing for concurrent transmissions over multiple antennas and improved spectral efficiency within the same spectrum allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate transmission equipment and antennas are used for access and backhaul networks, then network functionality is ensured, but cost increases and device complexity increases
Solution Approach 1:
The patent combines access and backhaul transmission functions into a single integrated system. The base station uses the same antenna array for both access communications (with mobile devices) and backhaul communications (with other base stations), eliminating the need for separate transmission equipment and reducing overall system complexity while maintaining full network functionality
Solution Approach 2:
The transmission equipment is designed to perform multiple functions simultaneously. The same base station and antenna system handles both access network traffic (serving mobile devices) and backhaul network traffic (inter-base station communications), making the equipment universal and multi-functional rather than dedicated to a single purpose
2Area of stationary object
If conventional Wi-Fi networks use multiple access point units to extend coverage, then coverage area increases, but interference increases and device complexity increases
Solution Approach 1:
The patent introduces spatial dimensionality to the transmission through beam forming technology. Instead of extending coverage by adding more access points that operate in the same spatial dimension (causing interference), the system uses directional beam forming to transmit signals in specific spatial directions, effectively utilizing the third dimension (space) to provide coverage extension without increasing interference
Solution Approach 2:
The beam forming capability allows the system to direct transmission energy locally toward specific targets (mobile devices or remote base stations) rather than broadcasting omnidirectionally. This localized transmission quality improves coverage while minimizing interference to other areas, as energy is concentrated where needed rather than dispersed throughout the entire environment
3Device complexity
If frequency diversity is limited in conventional systems, then spectrum allocation is simplified, but spectral efficiency decreases
Solution Approach 1:
The patent implements dynamic spectrum allocation through adaptive beam forming and modulation. The system can dynamically adjust transmission parameters including frequency selection, beam direction, and modulation schemes based on real-time channel conditions, enabling efficient utilization of available spectrum while maintaining manageable complexity through automated adaptation rather than static rigid allocation
4Device complexity
If modulation capabilities are limited in conventional systems, then system complexity is reduced, but network capacity decreases
Solution Approach 1:
The patent employs advanced modulation schemes with multiple parameters including amplitude, frequency, and phase variations. By changing and combining multiple modulation parameters simultaneously (such as QAM with higher orders), the system achieves significantly increased network capacity while managing complexity through integrated modulation-demodulation processing and adaptive parameter selection based on channel conditions
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A mobile broadband wireless network including at least two pairs of nodes arranged in a cluster, each pair coupled to form a link for wireless communication; each node including: an RF transceiver with associated modem; an antenna array arrangement, each antenna having a beam pattern selected to improve quality of transmission, coupled to the modem and arranged for multiple concurrent transmissions; a controller for controlling the transceiver, modem and antenna array arrangement for providing point to point communication; the controller including means for allocating MIMO streams and modulation to different antennas in the antenna array arrangement; and at least one interference mitigation mechanism implemented by the controller to minimize interference within the cluster during multiple concurrent transmissions, and a method of wireless communication.