Transceiver Measurement Receiver for D2D Signal Sensing
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Solution Overview
Problem
Conventional wireless communication systems, such as cellular networks, face challenges in enabling direct Device-to-Device (D2D) communication due to the inability of Frequency Division Duplex (FDD) user equipment to receive transmissions from other devices, as its receiver is protected from its own transmitted signal, making it impractical to route high-power transmission and low-noise reception signals effectively.
Innovation Solution
A transceiver module within user equipment (UE) is designed with a measurement receiver that operates as a second receiver to sense the UE's own transmitted signal and facilitate D2D communications on uplink frequencies, using a duplex filter for frequency division multiplexing and a directional coupler to manage signal flow, allowing operation as both a measurement receiver and a radio link receiver depending on transmission status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a duplex filter is used to protect the receiver from the transmitter's own signal, then receiver protection is improved, but the ability to receive D2D transmissions is worsened
Solution Approach 1:
The receiver function is segmented into two separate receivers: a first receiver protected by the duplex filter for conventional communications, and a second receiver that can receive D2D transmissions. This segmentation allows each receiver to be optimized for its specific function while resolving the contradiction between receiver protection and D2D capability
Solution Approach 2:
A signal routing mechanism acts as an intermediary to direct signals to the appropriate receiver. The system selectively routes D2D signals to the second receiver while routing conventional signals to the first receiver, enabling both receiver protection and D2D reception capability to coexist
2Adaptability or versatility
If signal routing is changed to enable D2D reception, then D2D communication capability is improved, but signal interference between high-power Tx and low-noise Rx is worsened
Solution Approach 1:
The receiver system is divided into two separate receivers with different protection levels. The first receiver maintains strong protection via the duplex filter for conventional operations, while the second receiver is specifically designed to handle D2D signals with controlled interference through selective activation and routing
Solution Approach 2:
The second receiver is activated only partially - specifically for D2D reception when needed - rather than being continuously active. This selective activation reduces exposure to interference from the high-power transmitter while maintaining D2D capability when required
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient D2D communication by allowing UE-to-UE communication on uplink bands, improving transmitter efficiency and enabling D2D transmissions with minimal overhead, while maintaining adequate frequency division multiplexing and antenna tuning.
Implementation Method 1
using a duplex filter for frequency division multiplexing and a directional coupler to manage signal flow
Implementation Method 2
using a duplex filter for frequency division multiplexing
Data Source
AI summary
Communication apparatus, method and computer program product for communication in a communication system. While a transmitter of a transceiver module of a user equipment is transmitting, a first receiver is operated on a first received signal, and a second receiver is operated on a transmitted signal from the transmitter. While the transmitter is not transmitting, the second receiver is operated on a second received signal.