Concurrent Active BWP Control for Half- and Full-Duplex Slots
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Solution Overview
Problem
Existing 5G wireless communication systems face inefficiencies due to the need to switch between different bandwidth parts (BWPs) during transitions between half-duplex and full-duplex slots, which can cause delays and interruptions, as only one BWP can be active at a time.
Innovation Solution
Implementing a mechanism for concurrent activation of multiple active BWPs, with timers managing their status changes, allowing seamless transitions between half-duplex and full-duplex slots by maintaining a primary and secondary BWP, and switching based on inactivity or switching timers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only one BWP can be active at a time, then device complexity is reduced, but communication efficiency deteriorates due to delays and interruptions during slot transitions
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple BWPs (first BWP, second BWP, third BWP) with different bandwidths before slot transitions occur. The device prepares bandwidth part configuration information in advance and can quickly switch between pre-configured BWPs during transitions between half-duplex and full-duplex slots, eliminating delays without requiring complex real-time configuration decisions.
Solution Approach 2:
The patent implements dynamics by enabling the device to dynamically activate multiple BWPs simultaneously based on current communication needs. The system can switch between different active BWP combinations (e.g., first and second BWPs, or first and third BWPs) depending on whether half-duplex or full-duplex operation is required, allowing flexible adaptation to changing communication scenarios while maintaining manageable complexity through timer-based control.
2Productivity
If multiple BWPs are activated concurrently, then communication efficiency improves by eliminating transition delays, but device complexity increases due to multiple active bandwidth parts
Solution Approach 1:
The patent applies segmentation by dividing the carrier bandwidth into multiple distinct BWPs (first BWP, second BWP, third BWP) with different bandwidth characteristics. Each BWP can be independently activated or deactivated based on communication needs. The device segments the bandwidth resources and can selectively activate specific segments (BWPs) rather than managing all possible bandwidth parts simultaneously, reducing complexity while enabling concurrent activation when needed.
Solution Approach 2:
The patent implements feedback mechanisms using timers (first inactivity timer, second inactivity timer, switching timer) that monitor communication activity and automatically adjust BWP activation status. When no data is received for a specified duration, the timers trigger BWP deactivation or switching, providing automatic feedback control that reduces the need for complex manual BWP management while maintaining optimal communication efficiency.
3Loss of energy
If BWPs are deactivated when not in use, then power consumption is reduced, but communication reliability may deteriorate due to reactivation delays
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple backup BWPs (second BWP, third BWP) that can be quickly activated if the primary BWP needs to be deactivated for power saving. The device prepares the necessary bandwidth part configuration information in advance, so when power-saving mode is needed, the system can rapidly switch to a different pre-configured BWP without experiencing significant reactivation delays, thus maintaining communication reliability while reducing power consumption.
Solution Approach 2:
The patent implements feedback control through inactivity timers that monitor data transmission and automatically trigger BWP deactivation or switching. When no data is received for a specified duration, the timer provides feedback to deactivate the current BWP and activate a power-saving configuration, while the switching timer ensures that if data appears suddenly, the system can quickly reactivate appropriate BWP, balancing power saving with communication reliability through automated feedback mechanisms.
Data Source
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AI summary
This disclosure provides methods, devices, and systems for full-duplex communications in wireless networks. Some implementations more specifically relate to multiple bandwidth parts (BWPs), active concurrently, for communications in a given direction (such as a downlink (DL) direction or an uplink (UL) direction) between a user equipment (UE) and a base station. For example, a first active BWP may be used for DL or UL communications in a half-duplex (HD) slot and a second active BWP may be used for DL or UL communications in an adjacent full-duplex (FD) slot. In some implementations, the UE may further change a status of one or more active BWPs after a given amount of time has elapsed. For example, the UE may change the states of an active BWP by deactivating the active BWP, switching the active BWP to a default BWP, or changing a role assigned to the active BWP.