Secondary Cell Transition Using Dormant BWP and Beamforming
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Solution Overview
Problem
The activation/deactivation mechanism of secondary cells (SCells) in wireless communication networks, particularly in 5G technologies, results in significant power consumption and delays due to the need for frequent scanning and measurement, which is inefficient and affects overall network performance.
Innovation Solution
Implementing a method to optimize the activation/deactivation of SCells by using beamforming techniques and dormancy-like behaviors, such as dormant bandwidth parts (BWP) in NR, to reduce unnecessary power consumption and measurement activities, thereby enhancing the efficiency of SCell transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent scanning and measurement are performed for SCell activation/deactivation, then the reliability of connection is improved, but power consumption increases and time is lost
Solution Approach 1:
The patent implements periodic scanning and measurement activities for SCell activation/deactivation rather than continuous monitoring. The UE performs measurements at specific intervals and only activates full measurement routines when necessary, reducing power consumption while maintaining connection reliability through periodic checks.
Solution Approach 2:
The patent applies preliminary action by pre-configuring measurement parameters and scanning patterns before actual activation is needed. The network node provides configuration information in advance, allowing the UE to perform measurements more efficiently when activation is required, reducing real-time power consumption while ensuring reliable connection establishment.
2Reliability
If frequent scanning and measurement are performed for SCell activation/deactivation, then the reliability of connection is improved, but activation delay increases
Solution Approach 1:
The patent uses periodic scanning and measurement to reduce activation delay by performing measurements at predetermined intervals rather than continuously. This allows the network to quickly determine when activation is needed and initiate the process with minimal delay, while maintaining connection reliability through regular checks.
Solution Approach 2:
The patent applies preliminary action by pre-configuring measurement parameters and scanning patterns before actual activation is needed. The network node provides configuration information in advance, allowing the UE to perform measurements more efficiently when activation is required, reducing real-time power consumption while ensuring reliable connection establishment.
3Productivity
If beamforming is used for signal concentration, then throughput is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by implementing beamforming specifically for downlink transmissions from the network node to the UE, rather than requiring complex beamforming capabilities at the UE end. The network node performs beamforming to concentrate signal energy in the desired direction, improving throughput while keeping the UE device complexity manageable.
Data Source
AI summary
Embodiments herein relate to, for example, a method performed by a UE (10) for communicating in a wireless communication network, wherein the UE (10) is configured to be connected to a first cell of an MSG and a second cell of an SCG. The UE (10) receives an indication to perform transition to a first operation state from a second operation state; and upon transitioning to the first operation state, monitors for one or more temporary reference signals of the SCG.