Multi-Antenna UE Guard Period Scheduling for Antenna Switching
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Solution Overview
Problem
Existing wireless communication systems, particularly in NR and LTE, face inefficiencies in scheduling guard periods for user equipments with multiple antennas, leading to suboptimal antenna switching and resource utilization.
Innovation Solution
The proposed solution involves selectively scheduling guard periods by determining when front and rear guard periods are not needed, allowing for antenna configuration changes without intervening gaps, and optimizing network resource allocation to improve transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guard periods are scheduled between uplink transmissions and sounding reference signal transmissions, then antenna switching can be performed, but transmission time and resource utilization deteriorate
Solution Approach 1:
The patent extracts and removes unnecessary guard periods from the transmission schedule. By determining when guard periods are not needed (when antenna switching is not required), the system eliminates these time-consuming intervals, thereby reducing transmission time loss while maintaining reliable antenna switching only when necessary.
Solution Approach 2:
The patent implements dynamic scheduling of guard periods based on actual antenna switching requirements. Rather than using fixed guard periods for all transmissions, the system dynamically determines whether a guard period is needed by checking if the same antenna is used for consecutive transmissions, adapting the transmission schedule to actual needs.
2Adaptability or versatility
If guard periods are scheduled between sounding reference signal transmissions and downlink transmissions, then antenna configuration changes can be performed, but resource utilization deteriorates
Solution Approach 1:
The patent removes unnecessary rear guard periods by determining when antenna configuration changes are not required. When the same antenna configuration can be used for both sounding reference signal transmission and subsequent downlink reception, the guard period is extracted and eliminated, improving resource utilization while maintaining adaptability when needed.
Solution Approach 2:
The patent changes the scheduling parameters dynamically based on antenna configuration requirements. By monitoring whether antenna switching is needed between transmissions and receptions, the system adjusts the presence and duration of guard periods, optimizing both adaptability and resource utilization.
3Reliability
If conventional guard period scheduling is used, then antenna switching is supported, but network resource allocation efficiency deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the scheduling entity determines whether guard periods are needed based on antenna switching requirements. This feedback-driven approach allows the system to maintain reliable antenna switching support while optimizing network resource allocation by eliminating unnecessary guard periods that would otherwise waste resources.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for selecting an antenna configuration for transmitting in a wireless communication network. An example technique may include determining that a front guard period is not scheduled between a scheduled uplink transmission and a scheduled sounding reference signal (SRS) transmission, and based on the determination, transmitting the scheduled SRS transmission using a first antenna configuration after transmitting the scheduled uplink transmission using the first antenna configuration.