Subband Full Duplex Mode Selection for Lower UE Power and Complexity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in managing subband full duplex (SBFD) operations, which can lead to increased implementation complexity and power consumption for user equipment (UEs) due to the need to support both uplink and downlink communications on non-overlapping subbands.
Innovation Solution
User equipment (UEs) are equipped with the capability to indicate whether to operate in SBFD mode or non-SBFD mode based on configuration information, allowing them to receive scheduling information accordingly, thereby optimizing power consumption and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UEs support both uplink and downlink communications on non-overlapping subbands in SBFD mode, then communication efficiency is improved, but implementation complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic mode switching capability where UEs can transition between SBFD mode and non-SBFD mode based on operational requirements. The network entity configures both SBFD and TDD modes, and UEs dynamically select the appropriate mode through indication messages, allowing the system to adapt complexity levels to actual communication needs rather than permanently supporting both uplink and downlink simultaneously.
Solution Approach 2:
The patent changes the operational parameter of duplex mode (SBFD vs. TDD) based on configuration and indication. By allowing UEs to indicate their preferred mode and the network to configure accordingly, the system dynamically adjusts the operational parameters to balance communication efficiency gains against implementation complexity, avoiding the need to permanently maintain complex SBFD capabilities when not required.
2Productivity
If UEs support both uplink and downlink communications on non-overlapping subbands in SBFD mode, then communication efficiency is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic mode switching where UEs can transition between SBFD mode (higher power consumption but higher efficiency) and non-SBFD mode (lower power consumption). Through indication messages and network configuration, the system dynamically selects the operational mode to match actual communication requirements, avoiding continuous high power consumption when SBFD benefits are not needed.
Solution Approach 2:
The patent enables periodic reassessment of mode selection through reconfiguration messages and indication opportunities. Instead of maintaining a fixed mode, the system periodically allows UEs to indicate their preferred mode based on current conditions, and the network can reconfigure accordingly, creating a rhythm of evaluation and adjustment that optimizes power consumption over time while maintaining communication efficiency when beneficial.
3Productivity
If the network configures UEs with SBFD operation, then spectral efficiency is improved, but UE implementation complexity increases
Solution Approach 1:
The patent makes UE operation dynamic rather than static by introducing mode indication capability. UEs can indicate whether they are capable of or prefer SBFD mode, and the network configures accordingly. This dynamic approach allows spectral efficiency improvements when UEs actually support SBFD, while avoiding the complexity burden on UEs that do not require or support this mode.
Solution Approach 2:
The patent applies different operational characteristics to different UEs based on their individual capabilities and conditions. Instead of forcing all UEs into SBFD mode or non-SBFD mode uniformly, the system allows each UE to indicate its preferred mode and receive appropriate configuration, creating local optimization where each UE operates in the mode that provides the best balance of spectral efficiency and implementation complexity for its specific situation.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Techniques described herein provide subband full duplex (SBFD) operation. In some examples, a network entity may receive first information that is indicative of a SBFD configuration, and the network entity may receive second information that is indicative of a time division duplex (TDD) configuration. The network entity may transmit an indication that indicates operation of the network entity in an SBFD mode or in a non-SBFD mode. Operation of the network entity in the SBFD mode may be in accordance with the SBFD configuration, and operation of the network entity in the non-SBFD mode may be in accordance with the TDD configuration.