Point-to-Point Wireless Link Interference Mitigation
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Solution Overview
Problem
Conventional wireless mobile 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 capacity constraints and increased latency.
Innovation Solution
A point-to-point communication system with high frequency diversity, variable modulation, and dynamically adapted beam forming, integrated into a single module with a single controller for both access and backhaul communications, using MIMO and omni-directional antennas to increase spectral efficiency and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate transmission equipment and antennas are used for access and backhaul networks, then network functionality is maintained, but deployment cost and device complexity increase significantly
Solution Approach 1:
The patent combines access and backhaul transmission equipment into a single integrated base station unit. The base station includes a controller, processor, and transmission equipment that can simultaneously handle both access communications with mobile devices and backhaul communications with the core network, eliminating the need for separate equipment installations and reducing deployment costs.
Solution Approach 2:
The base station is designed with multi-functional capabilities where a single transmission equipment can perform both access function (communicating with mobile devices) and backhaul function (communicating with core network). The system can dynamically allocate resources and switch between different communication modes using the same hardware infrastructure.
2Area of stationary object
If high power radios and multiple radios per sector are deployed to increase cell range, then coverage area is maximized, but base station equipment cost increases
Solution Approach 1:
The patent implements dynamic resource allocation and adaptive transmission techniques where the base station can adjust power levels, modulation schemes, and resource allocation in real-time based on network conditions and traffic demands. This allows efficient use of available resources to extend coverage without requiring permanently high-power equipment installations.
3Area of stationary object
If conventional Wi-Fi access point units are deployed with power amplifiers to extend coverage range, then coverage is improved, but device complexity and cost increase
Solution Approach 1:
The patent integrates backhaul transmission and access transmission functions within the same base station unit, sharing common components such as power amplifiers, antennas, and signal processing resources. This eliminates the need for separate power amplifier installations in Wi-Fi access points and reduces overall system complexity while maintaining coverage range.
4Reliability
If traditional wireless PTP microwave links are used for backhaul, then backhaul connectivity is achieved, but equipment cost and installation cost increase due to high tower requirements
Solution Approach 1:
The patent integrates backhaul transmission functionality directly into the access base station, eliminating the need for separate point-to-point microwave link installations. The base station uses its existing antennas and transmission equipment to establish direct wireless connections with the core network, removing the requirement for expensive dedicated backhaul towers and equipment.
Data Source
Figure 1A~1B
Figure 2
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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.