UE Duplex Mode Capability Signaling for Self-Interference Management
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Solution Overview
Problem
Conventional full-duplex communication techniques in wireless systems face inefficiencies due to self-interference and limitations in devices with size, power, and processing constraints, leading to reduced reliability and flexibility in duplex mode operations.
Innovation Solution
Implementing methods for user equipment (UE) to indicate duplex mode capability and switching latency to base stations, allowing dynamic switching between full-duplex and half-duplex modes based on device conditions, thereby improving scheduling and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communications are implemented, then communication efficiency and spectrum utilization are improved, but self-interference and device complexity increase
Solution Approach 1:
The patent implements dynamic duplex mode switching capability, where the UE can switch between full-duplex and half-duplex modes based on self-interference conditions and network requirements. The base station receives capability indicators and switching latency information, then dynamically schedules resources accordingly, allowing the system to adapt to changing interference conditions while maintaining communication efficiency.
2Productivity
If full-duplex mode is used, then spectrum utilization is improved, but device size and power consumption increase
Solution Approach 1:
The patent changes the operational parameters of the duplex mode based on device capabilities and conditions. The UE reports its full-duplex capability and switching latency to the base station, which then adjusts scheduling parameters such as time resources, frequency resources, and power allocation to match the UE's operational state, allowing efficient spectrum utilization without requiring all devices to have full-duplex hardware.
3Adaptability or versatility
If duplex mode switching is implemented, then flexibility and reliability are improved, but switching latency and complexity increase
Solution Approach 1:
The patent implements preliminary capability assessment where the UE reports its full-duplex capability and switching latency characteristics to the base station in advance. The base station uses this pre-acquired information to make informed scheduling decisions, selecting appropriate duplex modes and configuring resources before switching operations are needed, thereby reducing the impact of switching latency on overall system performance.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit control signaling indicating a capability of the UE for supporting a first duplex mode and indicating a mode switching latency of the UE for switching between the first duplex mode and a second duplex mode. In some cases, the UE may transmit an indication of a set of supported full-duplex channel combinations, where each channel combination of the set of supported full-duplex channel combinations may include an uplink channel and a downlink channel. In some cases, the UE may transmit an indication of a duration for which the capability of the UE for supporting the first duplex mode is applicable. The UE may receive scheduling information based on the capability of the UE for supporting the first duplex mode and the mode switching latency, and communicate with a base station based on the scheduling information.