In-band Full Duplex Interference Measurement and Terminal Pairing
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Solution Overview
Problem
In full duplex wireless communication systems, inter-terminal interference poses a challenge in in-band full duplex communication, where signals from one terminal can interfere with the reception of another, leading to reduced communication efficiency.
Innovation Solution
A communication apparatus and method that involves measuring and mitigating inter-terminal interference by designating specific resources for interference measurement and adjusting terminal pairings to minimize interference, using a control section to manage the process and report interference information to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If in-band full duplex communication is implemented to enhance frequency use efficiency, then frequency use efficiency is improved, but inter-terminal interference increases
Solution Approach 1:
The base station performs interference measurement and terminal pairing in advance before full duplex communication begins. The control section designates specific resources for interference measurement, and terminals measure interference from other terminals beforehand. Based on these measurements, the base station determines optimal terminal pairings (which terminals should transmit uplink and which should receive downlink) to minimize inter-terminal interference while enabling in-band full duplex operation.
Solution Approach 2:
The control section designates resources for interference measurement and receives interference measurement results from terminals. Based on this feedback information about actual interference levels, the base station dynamically adjusts terminal pairing decisions and resource allocation to optimize full duplex communication performance while managing interference.
2Reliability
If interference measurement resources are designated to reduce inter-terminal interference, then communication reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The designated resources for interference measurement serve multiple purposes: they are used both for measuring inter-terminal interference and can be reused for actual full duplex communication after pairing is determined. The control section manages these resources to fulfill both measurement and communication functions, reducing overall resource requirements while improving reliability through accurate interference assessment.
Data Source
AI summary
Provided are a communication apparatus that is operated under a wireless communication environment to which a full duplex communication scheme is applied and a communication method. The communication apparatus includes a communication section that performs wireless communication and a control section that controls operation of the communication section and processing of a signal transmitted and received by the communication section. Upon receiving, through a downlink control channel from a base station, designation regarding a resource in which interference is to be measured, the control section conducts, in the designated resource, measurement of interference from another terminal. In addition, the control section further controls transmission of interference information obtained by the measurement to the base station.