Radio Transceiver Duplexer Sharing for D2D Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio transceiver circuits for cellular communication systems face challenges in efficiently supporting device-to-device (D2D) communication while maintaining low cost, circuit area, and power consumption, particularly in utilizing the up-link frequency band to avoid signal interference and blocker issues.
Innovation Solution
A radio transceiver circuit design incorporating a duplexer for isolating transmitter and receiver components, allowing for FDD communication with a second receiver for D2D communication, and utilizing a time division duplex (TDD) mode to prevent interference, along with switches to manage shared duplexer usage, enabling simultaneous reception in different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a second receiver for D2D communication in the up-link frequency band is added, then D2D communication capability is improved, but device complexity and component count increase
Solution Approach 1:
The patent merges the second receiver for D2D communication with the existing transmitter and duplexer infrastructure. The second receiver shares the duplexer with the transmitter, allowing both components to utilize the same hardware resources. This combining approach enables D2D communication capability while avoiding the need for completely separate dedicated hardware, thus reducing overall device complexity and component count.
Solution Approach 2:
The duplexer is designed to serve multiple functions: it isolates the transmitter during cellular communication and simultaneously serves as the reception path for the second receiver during D2D communication. This multi-functionality allows a single hardware component to support both cellular and D2D communication modes, reducing the need for additional specialized components and lowering overall device complexity.
2Adaptability or versatility
If a second receiver and associated switches are added for D2D communication, then communication versatility is improved, but circuit area increases
Solution Approach 1:
The second receiver is merged with existing circuit infrastructure rather than being implemented as a completely separate unit. By sharing the duplexer and utilizing switches that can be integrated into existing signal paths, the circuit area required for D2D communication is minimized while still achieving the desired communication versatility.
Solution Approach 2:
The patent employs dynamically controllable switches that can reconfigure signal paths between cellular and D2D modes. These switches allow the same physical circuit area to be dynamically allocated to different communication functions as needed, maximizing the utilization of available circuit space and reducing the total area required compared to having dedicated static paths for each function.
3Productivity
If switches are added to manage shared duplexer usage, then resource utilization is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamically controllable switches that can reconfigure signal paths based on communication mode requirements. These switches enable the duplexer to be dynamically shared between the transmitter and second receiver, optimizing resource utilization by allowing the same hardware to serve multiple functions at different times.
Solution Approach 2:
The system incorporates control logic that monitors communication mode requirements and automatically configures the switches accordingly. This feedback mechanism ensures that the duplexer is properly allocated to the active communication function (cellular or D2D) without requiring manual intervention, thereby improving resource utilization while keeping control complexity manageable through automated decision-making.
Data Source
AI summary
A radio transceiver circuit for FDD communication is disclosed. It comprises a transmitter for FDD signal transmission in a first frequency band, a first receiver for FDD signal reception in a second frequency band, separate from the first frequency band, and a duplexer. An output port of the transmitter is operatively connected to a first port of the duplexer for transmitting, through the duplexer, signals in said first frequency band. An input port of the first receiver is operatively connected to a second port of the duplexer for receiving, through the duplexer, signals in said second frequency band. The radio transceiver circuit comprises a second receiver, separate from the first receiver, for reception in said first frequency band. An input port of the second receiver is operatively connected to said first port of the duplexer for receiving, through the duplexer, signals in said first frequency band. A related radio communication apparatus is also disclosed.