Full-Duplex UE Capability Signaling for Mixed Duplex Scheduling
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies when full-duplex (FD) and half-duplex (HD) UEs are mixed without considering their respective duplex mode support capabilities and timing differences, leading to operational challenges.
Innovation Solution
A mechanism is introduced where UEs transmit capability information about their FD mode support levels and timing differences between uplink and downlink signals, allowing the base station to allocate resources efficiently based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station allocates resources without considering UE's FD support capability and timing differences, then resource allocation is simple, but system operation efficiency deteriorates
Solution Approach 1:
The base station performs preliminary actions by requesting and obtaining capability information from UEs before resource allocation. The UE transmits capability information including FD mode support levels and timing differences between UL and DL signals in advance, allowing the BS to plan resource allocation considering these parameters beforehand, thus improving operational efficiency without excessive complexity during actual allocation
Solution Approach 2:
The invention introduces new parameters (FD support capability levels and UL-DL timing differences) into the resource allocation process. The BS uses these parameters to determine appropriate duplex modes and timing configurations for each UE, transforming the resource allocation from a simple process to one that adapts to individual UE characteristics, thereby resolving the contradiction between simplicity and efficiency
2Measurement precision
If the system discriminates FD support capability for each UE, then resource allocation accuracy improves, but system complexity increases
Solution Approach 1:
The capability information is segmented into discrete, manageable components: FD support capability levels (first level, second level, third level) and timing difference parameters. This segmentation allows the BS to process and allocate resources based on specific capability combinations without being overwhelmed by overall system complexity
Solution Approach 2:
Capability information acts as an intermediary between UE and BS. The UE transmits structured capability information including FD support levels and timing differences, which serves as a mediator that enables the BS to make informed allocation decisions without direct complex interactions, thus improving accuracy while managing complexity
3Reliability
If mixed FD and HD UEs operate without capability discrimination, then system simplicity is maintained, but operational reliability deteriorates
Solution Approach 1:
The system implements feedback through capability information transmission. UEs provide feedback about their FD support capabilities and timing characteristics to the BS, which then uses this feedback to make reliable resource allocation decisions. This feedback mechanism ensures that mixed FD and HD UEs can operate reliably together while maintaining manageable system complexity through standardized information exchange
Data Source
AI summary
The present document relates to a method for transmitting and receiving a signal by a terminal in a wireless communication system, the method comprising the steps of receiving, from a base station, a message for requesting capability information; transmitting the capability information to the base station on the basis of the message for requesting the capability information; establishing an RRC connection to the base station; and transmitting uplink control information (UCI) to the base station, wherein the message for requesting the capability information includes information on a full-duplex (FD) mode support degree of the terminal, which is classified into two or more levels, the capability information includes information on whether the terminal supports the FD mode, and the UCI includes information related to a timing difference between an uplink (UL) signal and a downlink (DL) signal.