Communication Device Switching MLO and Full-Duplex Modes with Shared RF
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Solution Overview
Problem
Existing communication devices face limitations in resource utilization and device size when switching between multi-link operation (MLO) and full-duplex (FD) operations, with MLO devices wasting unused RF circuits and antennas, and FD devices requiring numerous antennas, leading to increased device size and complexity.
Innovation Solution
A communication device and method that allows switching between MLO and FD operations by enabling or disabling self-interference cancellers and connections between blocks, allowing shared use of antennas and RF components across frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a device supports FD operation with physically separated transmission and reception antennas, then self-interference suppression is improved, but device size increases
Solution Approach 1:
The patent combines transmission and reception antenna functions into a single antenna structure. The antenna is configured to perform both transmission and reception operations, eliminating the need for physically separate antennas while maintaining FD operation capability.
Solution Approach 2:
The single antenna is designed with multi-functionality to serve both as a transmission antenna and a reception antenna. This universal antenna structure allows the device to perform bidirectional communication in the same frequency band without requiring dedicated antennas for each function.
2Device complexity
If MLO operation switches to single link communication, then device complexity is reduced, but communication resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic switching capability that allows the communication device to flexibly transition between MLO operation and single link communication based on communication environment conditions. This dynamic adaptation enables the device to maintain optimal performance by selecting the appropriate operation mode.
Solution Approach 2:
The device changes operational parameters by switching between different communication modes (MLO and single link). By adjusting the operation state according to channel conditions, the device optimizes resource utilization while managing complexity levels appropriately for each scenario.
3Object-affected harmful factors
If hybrid coupler and variable impedance are added for FD operation, then self-interference cancellation is improved, but device size and complexity increase
Solution Approach 1:
The patent extracts and eliminates the need for complex circuit elements like hybrid couplers and variable impedance components. By using a single antenna with appropriate switching mechanisms, the design removes these additional elements while still achieving self-interference cancellation through alternative means.
Data Source
AI summary
The present disclosure relates to a communication device and a communication method capable of more appropriately changing an operation state.Provided is a communication device including a communication unit having at least a part of a configuration performing wireless communication using two or more frequency bands, and a control unit configured to perform control to switch the configuration between a first state in which the wireless communication is performed using the two or more frequency bands and a second state in which full-duplex wireless communication is performed using the one or more frequency bands. The present disclosure can be applied to, for example, a communication device configuring a wireless LAN system.