Carrier Switching Interruption Handling in Wireless Uplink
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Solution Overview
Problem
Current wireless communication systems face challenges in handling uplink reference signal interruptions due to carrier switching and lack effective methods for carrier switching capability indication, which affect communication efficiency and reliability.
Innovation Solution
The method involves a user equipment (UE) interrupting communication on a first component carrier to switch to a second carrier for uplink reference signal transmission, adjusting parameters to account for the interruption, and providing switching capability information to the base station for optimized carrier aggregation configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier switching is performed to transmit uplink reference signals on a second component carrier, then the uplink reference signal transmission is enabled, but communication on the first component carrier is interrupted
Solution Approach 1:
The base station determines carrier switching timing in advance and configures the UE with switching parameters before the actual switching occurs. This preliminary configuration allows the UE to prepare for carrier switching without interrupting ongoing communications, as the switching schedule is predetermined and coordinated with the base station.
Solution Approach 2:
The system dynamically adjusts carrier switching operations based on real-time communication conditions. The base station monitors uplink reference signal requirements and dynamically determines when carrier switching should occur, allowing flexible coordination between reference signal transmission and data communication to minimize interruptions.
2Reliability
If carrier switching capability indication is not implemented, then system complexity is reduced, but communication reliability during carrier switching deteriorates
Solution Approach 1:
The UE reports its carrier switching capability to the base station, creating a feedback mechanism that allows the base station to understand the UE's switching capabilities and configure appropriate switching parameters. This feedback loop enables reliable carrier switching without requiring complex indication mechanisms from the base station to the UE.
Solution Approach 2:
The system uses parameter-based capability indication where the UE reports specific switching capability parameters (such as switching timing, frequency ranges, or supported configurations) rather than complex structural indications. This parameter-based approach maintains simplicity while providing the necessary information for reliable carrier switching.
Data Source
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AI summary
Aspects of the present disclosure provide procedures for handling interruption due to carrier switching for sounding reference signal transmission and for a carrier switching capability indication. A method by a user equipment (UE) is provided, generally including interrupting communication on a first component carrier (CC) to switch between the first CC and a second CC to transmit an uplink reference signal on the second CC and adjusting one or more parameters of an uplink transmission on the first component carrier to account for the interrupting communication on the second CC. In aspects, another method is provided in which, a UE receives a query from a base station for switching capability information of the UE for one or more carrier aggregation (CA) configurations and, in response to the query, provides an indication to the BS of the switching capability information of the UE for the one or more CA configurations.