Dual-Band Wireless Communication Using Variable Beamwidths
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Solution Overview
Problem
Current wireless communication systems face interference and limited data throughput due to crowded unlicensed frequency bands, particularly in the 2.4 GHz and 5.0 GHz bands, necessitating the use of higher frequency bands above 20 GHz for Gbps communications, which poses challenges in beamwidth, interference, and signal attenuation.
Innovation Solution
A method where communication devices use a first frequency band with a broader beamwidth for initial communication and control information, followed by a second frequency band with a narrower beamwidth for more precise data transmission, utilizing different antenna systems and modulation techniques to optimize beamforming and carrier frequency offset estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher frequency bands above 20 GHz are used for Gbps communications, then data throughput is improved, but signal attenuation increases
Solution Approach 1:
The system dynamically switches between different frequency bands (2.4 GHz, 5 GHz, and above 20 GHz) based on communication conditions. Higher frequency bands are used when high throughput is needed and conditions permit, while lower bands are used for robust communication, creating a dynamic adaptation to balance throughput and attenuation
Solution Approach 2:
The patent changes the operating frequency parameter to achieve Gbps communications. By transitioning from traditional 2.4/5 GHz bands to higher frequency bands above 20 GHz, the system accesses larger bandwidth resources to improve data throughput despite the increased attenuation at higher frequencies
2Object-affected harmful factors
If narrower beamwidth is used for precise data transmission, then interference is reduced, but coverage area decreases
Solution Approach 1:
The system segments the communication process into two phases: initial communication using broader beamwidth for wide coverage and device discovery, followed by data transmission using narrower beamwidth for precise targeting. This segmentation allows the system to achieve both wide coverage and low interference at different stages
Solution Approach 2:
The beamwidth is dynamically adjusted based on the communication phase. During initial access and control information exchange, broader beamwidth provides extensive coverage. Once connection is established, the system transitions to narrower beamwidth for data transmission, reducing interference while maintaining adequate coverage through directional focusing
3Area of stationary object
If broader beamwidth is used for initial communication, then coverage area is improved, but interference increases
Solution Approach 1:
The communication process is divided into segments with different beamwidth requirements. Initial communication uses broader beamwidth for coverage, while subsequent data transmission uses narrower beamwidth for low interference. This segmentation resolves the contradiction by applying appropriate beamwidth to each phase
Solution Approach 2:
The system performs preliminary communication actions (device discovery, connection establishment, control information exchange) using broader beamwidth before transitioning to precise data transmission. This preliminary use of wide coverage prepares the system for the subsequent low-interference phase
Data Source
AI summary
Communication signals using a first and a second frequency band in a wireless network is described herein. The first frequency band may be associated with a first beamwidth while the second frequency band may be associated with a second beamwidth. An apparatus may include receiver circuitry arranged to receive first signals in a first frequency band associated with a first beamwidth and second signals in a second frequency band associated with a second beamwidth, the first signals comprising a frame synchronization parameter and the second signals comprising frame alignment signals. The apparatus may further include processor circuitry coupled to the receiver circuitry, the processor circuitry arranged to activate or deactivate the receiver circuitry to receive the frame alignment signals based on the frame synchronization parameter. Other embodiments may be described and/or claimed.