Carrier Activation Bandwidth Switching in Wireless Communications
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face disruptions when activating or deactivating configured carriers, leading to potential disruptions in communication due to the need for bandwidth switching, which can impact control data transmissions and data loss.
Innovation Solution
A method and apparatus for minimizing service disruption by selecting specific time slots or subframes for bandwidth switching, based on criteria such as data transmissions, signal types, and resource availability, allowing for seamless activation and deactivation of carriers without interrupting control data communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If bandwidth switching is performed immediately upon carrier activation/deactivation, then the carrier state changes quickly, but communication disruptions and data loss occur
Solution Approach 1:
The system performs preliminary actions by selecting and preparing appropriate time slots or subframes for bandwidth switching before the actual carrier activation or deactivation occurs. This ensures that switching happens during pre-identified suitable periods, minimizing disruption to ongoing communications while achieving timely carrier state changes.
2Reliability
If bandwidth switching is delayed to avoid disruptions, then communication continuity is maintained, but carrier activation/deactivation response time increases
Solution Approach 1:
The system dynamically selects time slots or subframes for bandwidth switching based on real-time communication conditions, data transmissions, and resource availability. This dynamic approach allows the system to achieve carrier state changes as quickly as possible while adapting to current communication patterns to minimize disruptions.
3Productivity
If bandwidth switching occurs during active time slots, then resource utilization is maximized, but control data transmissions are interrupted
Solution Approach 1:
The system uses feedback mechanisms to monitor ongoing control data transmissions and communication patterns, using this information to intelligently select appropriate time slots or subframes for bandwidth switching. This feedback-driven selection ensures switching occurs during periods that minimize interference with control data while maintaining efficient resource utilization.
Data Source
AI summary
Systems, methods and apparatuses are provided that facilitate selecting resources, such as time slots, subframes, etc., for performing bandwidth switching related to activating and/or deactivating one or more carriers. A data portion of one or more subframes can be selected for performing bandwidth switching. In addition, a device can determine whether one or more downlink grants are received in the one or more subframes, and can avoid selecting such subframes. The device can alternatively perform the bandwidth switching and request retransmission of the data portion. Additionally or alternatively, the device can determine a type of the one or more subframes and/or signals transmitted in the one or more subframes to determine whether to perform bandwidth switching in the subframes. The bandwidth switching can include changing a sampling rate, reconfiguring frequency filters, modifying a local oscillator, etc.