Wireless Device Transceiver Set Configuration for Handover Latency
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Solution Overview
Problem
Existing digital beamforming management in wireless devices faces challenges in power efficiency and latency during handover procedures, particularly due to the need for frequent updates of active antenna/transceiver sets.
Innovation Solution
A method for a processing unit in a wireless device to configure sets of transceivers/antennas as active or candidates, with periodic updates based on signal strength measurements and mobility state, allowing for efficient power management and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent updates of active antenna/transceiver sets are performed to maintain communication quality, then communication robustness is improved, but power consumption increases
Solution Approach 1:
The patent maintains a candidate set of antenna/transceiver configurations in advance, prepared before handover is needed. This preliminary preparation allows the system to switch configurations quickly without performing full updates at the moment of handover, thereby reducing power consumption while maintaining communication robustness.
Solution Approach 2:
The patent dynamically adjusts the size and composition of the candidate set based on mobility state and signal conditions. During high mobility, the candidate set is larger and updated more frequently; during low mobility, it is smaller and updated less frequently. This dynamic adaptation optimizes the balance between communication robustness and power consumption.
2Adaptability or versatility
If candidate set determination is performed at handover time, then adaptability to current conditions is improved, but handover latency increases
Solution Approach 1:
The patent performs preliminary configuration of candidate antenna/transceiver sets during periods when the serving cell signal is strong, before handover is actually needed. This advance preparation ensures that when handover becomes necessary, the candidate set is already determined and ready, significantly reducing handover latency while maintaining adaptability through periodic updates.
Solution Approach 2:
The patent implements periodic updates of the candidate set at configured intervals or based on mobility state changes. This periodic action ensures the candidate set remains adapted to current conditions without requiring continuous determination at every potential handover moment, thus balancing adaptability with reduced latency.
3Reliability
If Dual Active Protocol Stack Handover is used to reduce handover interruption time, then communication continuity is improved, but system complexity increases
Solution Approach 1:
The patent prepares the candidate configuration in advance, including pre-configuring the protocol stack and parameter sets. This preliminary action allows for simpler handover execution that can achieve communication continuity without requiring the complex Dual Active Protocol Stack mechanism, as the necessary resources and configurations are already in place.
Data Source
AI summary
A method for a processing unit, the processing unit being comprisable in a wireless device, WD, and being connectable to a plurality of transceivers, each transceiver being connected to one or more antennas, the method comprising: configuring a first set of the plurality of transceivers and/or antennas to be active; configuring a second set of the plurality of transceivers and/or antennas to be candidates; receiving reconfiguration information; and updating the first and second sets of transceivers based on the received reconfiguration information. Corresponding computer program product, processing unit and wireless devices are also disclosed.